Led illumination device using ac power
Abstract
Disclosed is a light-emitting device having a configuration in which all light-emitting elements are designed to always emit light regardless of voltage level when an input voltage is higher than the minimum voltage for emitting light, wherein the light-emitting elements are connected to each other in parallel when the voltage level is low, and the light-emitting elements are connected to each other in series when the voltage level is high.

Term
No projected expiry on record.
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26 claims: 4 independent, 22 dependent
- 1전류입력단자, 전류출력단자, 전류 바이패스 출력단자, 및 상기 전류입력단자에 입력된 전류에 의해 발광되는 제1 발광그룹을 포함하는 발광유닛;및 상기 전류출력단자를 통해 출력된 전류의 적어도 일부를 제공받도록 연결되어 있는 제2 발광그룹;을 포함하며, 상기 전류출력단자는 상기 전류입력단자를 통해 입력된 전류 중 전부의 전류 또는 적어도 일부의 전류를 선택적으로 출력하도록 되어 있고, 상기 전류 바이패스 출력단자는, 상기 전류출력단자가 상기 적어도 일부의 전류만을 출력하는 경우 상기 전부의 전류 중 상기 적어도 일부의 전류를 제외한 나머지 전류를 출력하도록 되어 있는, 조명장치.
- 2제1항에 있어서, 상기 발광유닛은 상기 전류입력단자와 상기 전류출력단자 사이에 연결된 제1바이패스부를 더 포함하며, 상기 제1바이패스부가 온 상태인 경우에는 상기 전류입력단자를 통해 입력된 전류의 일부가 상기 제1바이패스부가 제공하는 바이패스 경로를 통해 흐르도록 되어 있고, 상기 제1바이패스부가 오프 상태인 경우에는 상기 전류입력단자를 통해 입력된 전류가 상기 바이패스 경로를 통해 흐르지 않도록 되어 있으며, 상기 제1바이패스부의 온 상태 및 오프 상태 간의 전환은 상기 전류출력단자의 전압에 의해 조절되는 것을 특징으로 하는, 조명장치.
- 3제2항에 있어서, 상기 제1바이패스부는, 일 단자가 상기 전류출력단자에 연결되고 타 단자가 상기 제1 발광그룹 쪽에 연결된 저항;상기 타 단자와 상기 전류입력단자 사이에 연결된 트랜지스터;및 상기 트랜지스터의 게이트와 상기 전류출력단자 사이에 미리 결정된 전위차가 발생하도록 하는 바이어스 전압 제공소자;를 더 포함하는, 조명장치.
- 4제3항에 있어서, 상기 발광유닛은 상기 전류 바이패스 출력단자와 상기 제1 발광그룹의 출력부 사이에 연결된 제2바이패스부를 더 포함하며, 상기 제1바이패스부가 온 상태인 경우 상기 제2바이패스부가 온 상태이며, 상기 제1바이패스부가 오프 상태인 경우 상기 제2바이패스부가 오프 상태인 것을 특징으로 하는, 조명장치.
- 5제1항 또는 제2항에 있어서, 상기 전류출력단자는, 상기 전류입력단자에 인가되는 전압이 제1전위인 경우에는 상기 적어도 일부의 전류를 출력하도록 되어 있고, 상기 전류입력단자에 인가되는 전압이 상기 제1전위보다 큰 제2전위인 경우에는 상기 전부의 전류를 출력하도록 되어 있는, 조명장치.
- 6제4항에 있어서, 상기 발광유닛은 역류방지부를 더 포함하며, 상기 역류방지부는, 상기 제2바이패스부가 상기 제1 발광그룹의 출력부에 접속하는 접속점과, 상기 저항의 상기 타 단자 사이에 연결된 것을 특징으로 하는, 조명장치.
- 7제1항에 있어서, 상기 제2 발광그룹은, 또 다른 전류입력단자, 또 다른 전류출력단자, 또 다른 전류 바이패스 출력단자, 및 상기 또 다른 전류입력단자에 입력된 전류에 의해 발광되는 상기 제2 발광그룹을 포함하는 또 다른 발광유닛에 포함된 것이며, 상기 또 다른 전류입력단자는 상기 전류출력단자에 전기적으로 연결되며, 상기 또 다른 전류출력단자는 상기 또 다른 전류입력단자를 통해 입력된 전류 중 전부의 제2전류 또는 적어도 일부의 제2전류를 선택적으로 출력하도록 되어 있고, 상기 또 다른 전류 바이패스 출력단자는, 상기 또 다른 전류출력단자가 상기 적어도 일부의 제2전류만을 출력하는 경우 상기 또 다른 전류입력단자를 통해 입력된 전류 중 상기 적어도 일부의 제2전류를 제외한 나머지 전류를 출력하도록 되어 있으며, 상기 조명장치는 상기 또 다른 전류출력단자를 통해 출력된 전류의 적어도 일부를 제공받도록 연결되어 있는 제3 발광그룹을 더 포함하는, 조명장치.
- 8제7항에 있어서, 상기 또 다른 발광유닛은 상기 또 다른 전류입력단자와 상기 또 다른 전류출력단자 사이에 연결된 또 다른 제1바이패스부를 더 포함하며, 상기 또 다른 제1바이패스부가 온 상태인 경우에는 상기 또 다른 전류입력단자를 통해 입력된 전류의 일부가 상기 또 다른 제1바이패스부가 제공하는 또 다른 바이패스 경로를 통해 흐르도록 되어 있고, 상기 또 다른 제1바이패스부가 오프 상태인 경우에는 상기 또 다른 전류입력단자를 통해 입력된 전류가 상기 또 다른 바이패스 경로를 통해 흐르지 않도록 되어 있으며, 상기 또 다른 제1바이패스부의 온 상태 및 오프 상태 간의 전환은 상기 또 다른 전류출력단자의 전압에 의해 조절되는 것을 특징으로 하는, 조명장치.
- 9제8항에 있어서, 상기 또 다른 제1바이패스부는, 일 단자가 상기 또 다른 전류출력단자에 연결되고 타 단자가 상기 제2 발광그룹 쪽에 연결된 또 다른 저항;상기 또 다른 저항의 상기 타 단자와 상기 또 다른 전류입력단자 사이에 연결된 또 다른 트랜지스터;및 상기 또 다른 트랜지스터의 게이트와 상기 또 다른 전류출력단자 사이에 미리 결정된 전위차가 발생하도록 하는 또 다른 바이어스 전압 제공소자;를 더 포함하는, 조명장치.
- 10제9항에 있어서, 상기 또 다른 발광유닛은, 상기 또 다른 전류 바이패스 출력단자와 상기 제2 발광그룹의 출력부 사이에 연결된 또 다른 제2바이패스부를 포함하며, 상기 또 다른 제1바이패스부가 온 상태인 경우 상기 또 다른 제2바이패스부 또한 온 상태이며, 상기 또 다른 제1바이패스부가 오프 상태인 경우 상기 또 다른 제2바이패스부 또한 오프 상태인 것을 특징으로 하는, 조명장치.
- 11제7항에 있어서, 상기 또 다른 전류출력단자는, 상기 또 다른 전류입력단자에 인가되는 전압이 제3전위인 경우에는 상기 적어도 일부의 제2전류를 출력하도록 되어 있고, 상기 또 다른 전류입력단자에 인가되는 전압이 제3전위보다 큰 제4전위인 경우에는 상기 전부의 제2전류를 출력하도록 되어 있는, 조명장치.
- 12제10항에 있어서, 상기 또 다른 발광유닛은 또 다른 역류방지부를 더 포함하며, 상기 또 다른 역류방지부는, 상기 제2 발광그룹의 출력부와 상기 또 다른 제2바이패스부가 접속하는 접속점과, 상기 또 다른 저항의 상기 타 단자 사이에 연결된 것을 특징으로 하는, 조명장치.
- 13제1항에 있어서, 상기 제1 발광그룹의 양단에는 커패시터가 병렬로 연결되어 있는, 조명장치.
- 14전위가 변동 가능한 전원을 공급하는 전원공급부;상류에서 하류방향으로 순번을 가지도록 서로 전기적으로 연결되고 상기 전원공급부로부터 전원을 공급받는 복수의 발광그룹;제1 바이패스부;및 제2 바이패스부를 포함하며, 상기 각각의 발광그룹은, 적어도 하나 이상의 발광소자를 포함하고, 상기 제1 바이패스부와 상기 제2 바이패스부는 모두, 임의 순번째인 제1 발광그룹이 속한 발광유닛에 포함되며, 상기 제1 바이패스부는, 상기 제1 발광그룹의 상류단과 상기 제1 발광그룹보다 하류에서의 임의 순번째인 제2 발광그룹의 상류단을 단속 가능하게 전기적으로 연결하도록 되어 있고, 상기 제2 바이패스부는, 상기 제1 발광그룹의 하류단과 접지를 단속 가능하게 전기적으로 연결하도록 되어 있으며, 상기 제2 바이패스부와 상기 제1 발광그룹의 하류단이 연결되는 접속점은, 적어도 상기 제1 바이패스부와 상기 제2 발광그룹의 상류단이 연결되는 접속점보다 상류에 위치하는, 발광장치.
- 15제14항에 있어서, 상기 제1 바이패스부가 상기 제1 발광그룹의 상류단과 상기 제2 발광그룹의 상류단을 연결할 때에, 상기 제1 바이패스부는 정전류원으로서 동작하도록 되어 있는, 발광장치.
- 16제14항에 있어서, 상기 제1 바이패스부를 통해 전류가 흐를 때에는 상기 제2 바이패스부를 통해 전류가 흐르도록 되어 있고, 상기 제1 바이패스부를 통해 전류가 흐르지 않을 때에는 상기 제2 바이패스부를 통해 전류가 흐르지 않도록 되어 있는, 발광장치.
- 17제14항에 있어서, 상기 발광장치는 상기 제2 발광그룹보다 하류에서의 임의 순번째인 제3 발광그룹;및 또 다른 제1 바이패스부 및 또 다른 제2 바이패스부를 더 포함하되, (a) 상기 또 다른 제1 바이패스부는, 상기 제1 바이패스부와 상기 제2 발광그룹의 상류단이 연결되는 접속점보다 하류인 상기 제2 발광그룹의 또 다른 상류단과, 상기 제2 발광그룹의 하류단을 단속 가능하게 전기적으로 연결하도록 되어 있으며;상기 또 다른 제2 바이패스부는, 상기 제2 발광그룹의 하류단과 접지를 단속 가능하게 전기적으로 연결하도록 되어 있으며;상기 또 다른 제2 바이패스부가 상기 제2 발광그룹의 하류단에 연결되는 접속점은, 상기 또 다른 제1 바이패스부가 상기 제2 발광그룹의 하류단에 연결되는 접속점보다 상류에 위치하거나, 또는 (b) 상기 또 다른 제1 바이패스부는 상기 제2 발광그룹보다 하류에서의 임의 순번째인 제3 발광그룹의 상류단과, 상기 제3 발광그룹의 하류단을 단속 가능하게 전기적으로 연결하도록 되어 있으며;상기 또 다른 제2 바이패스부는, 상기 제3 발광그룹의 하류단과 접지를 단속 가능하게 전기적으로 연결하도록 되어 있으며;상기 또 다른 제2 바이패스부가 상기 제3 발광그룹의 하류단에 연결되는 접속점은, 상기 또 다른 제1 바이패스부가 상기 제3 발광그룹의 하류단에 연결되는 접속점보다 상류에 위치하는, 발광장치.
- 18제17항에 있어서, 상기 발광장치는 역류방지부를 더 포함하며, 상기 역류방지부는, (a)상기 제2 바이패스부와 상기 제1 발광그룹의 하류단이 연결되는 접속점과, 상기 제1 바이패스부와 상기 제2 발광그룹의 상류단이 연결되는 접속점 사이, (b)상기 또 다른 제2 바이패스부와 상기 제2 발광그룹의 하류단에 연결되는 접속점과, 상기 또 다른 제1 바이패스부와 상기 제2 발광그룹의 하류단에 연결되는 접속점 사이, 및 (c)상기 또 다른 제2 바이패스부와 상기 제3 발광그룹의 하류단에 연결되는 접속점과, 상기 또 다른 제1 바이패스부와 상기 제3 발광그룹의 하류단에 연결되는 접속점 사이 중 적어도 한 곳에 연결된 것을 특징으로 하는, 발광장치.
- 19제14항에 있어서, 상기 각 발광그룹의 양단에는 커패시터가 병렬로 연결되어 있는, 발광장치.
- 20최상류부터 최하류까지 순번을 가지도록 선형으로 전기 연결된 복수개의 발광그룹들;상기 발광그룹들 사이의 연결점과 접지를 연결하는 제1회로부;및 상기 발광그룹들 사이의 또 다른 연결점들을 바이패스 연결하는 제2회로부;를 포함하여, 공급되는 교류전원의 전위가 상승하는 동안 최상류의 발광그룹부터 최하류의 모든 발광그룹을 순차적으로 병렬연결에서 직렬연결로 전환시키도록 되어 있거나, 또는, 공급되는 교류전원의 전위가 하강하는 동안 최하류의 발광그룹부터 최상류의 모든 발광그룹을 순차적으로 직렬연결에서 병렬연결로 전환시키도록 되어 있고, 상기 각각의 발광그룹은 한 개 이상의 LED소자를 구비하는, 교류전원 LED 조명장치.
- 21제20항에 있어서, 상기 각 발광그룹의 양단에는 커패시터가 병렬로 연결된, 교류전원 LED 조명장치.
- 22제1 발광그룹, 제1 바이패스부, 제2 바이패스부, 및 상기 제1 발광그룹의 입력단과 상기 제1 바이패스부의 입력단에 공통으로 연결되어 상기 제1 발광그룹과 상기 제1 바이패스부에 전류를 공급하는 전류입력단자를 포함하는 발광유닛;및 제1 회로상태에서 상기 제1 발광그룹의 출력단에서 출력된 전류를 공급받고 제2 회로상태에서 상기 제1 바이패스부의 출력단에서 출력된 전류를 공급받도록, 상기 발광유닛에 연결되어 있는 제2 발광그룹;을 포함하며, 상기 제1 회로상태에서, 상기 제1 바이패스부를 통해 전류가 흐르지 않도록 상기 제1 바이패스부가 차단되도록 되어 있고, 상기 제1 발광그룹에서 출력된 전류는 상기 제2 바이패스부를 통해 흐르지 않도록 상기 제2 바이패스부가 차단되도록 되어 있으며, 상기 제2 회로상태에서, 상기 제1 바이패스부를 통해 전류가 흐르도록 되어 있고, 상기 제1 발광그룹에서 출력된 전류의 적어도 일부가 상기 제2 바이패스부를 통해 흐르도록 되어 있고, 상기 제2 발광그룹에 전류가 공급될 때에 상기 제2 바이패스부를 통해 흐르는 전류는 상기 제2 발광그룹으로 흐르지 않도록 되어 있는, 조명장치.
- 23제22항에 있어서, 상기 제2 바이패스부의 출력단자는 접지에 연결되도록 되어 있으며, 상기 발광유닛은, 상기 제1 바이패스부에 연결된 전류출력단자를 더 포함하며, 상기 제1 바이패스부의 차단여부는 상기 전류출력단자의 전압에 의해 조절되는 것을 특징으로 하는, 조명장치.
- 24제23항에 있어서, 상기 제1 바이패스부는, 일 단자가 상기 전류출력단자에 연결되고 타 단자가 상기 제1 발광그룹 쪽에 연결된 저항;상기 타 단자와 상기 전류입력단자 사이에 연결된 트랜지스터;및 상기 트랜지스터의 게이트와 상기 전류출력단자 사이에 미리 결정된 전위차가 발생하도록 하는 바이어스 전압 제공소자;를 더 포함하는, 조명장치.
- 25제22항에 있어서, 상기 제1 회로상태는 제1 입력전압레벨을 갖는 상태를 나타내고, 상기 제2 회로상태는 제2 입력전압레벨을 갖는 상태를 나타내며, 상기 제1 입력전압레벨은 상기 제2 입력전압레벨보다 큰, 조명장치.
- 26제22항에 있어서, 상기 제1 발광그룹 및 상기 제2 발광그룹의 양단에는 각각 커패시터가 병렬로 연결된, 조명장치.
Independent claims26
190 paragraphs, as filed
LED lighting devices using an AC power supply
1The present invention relates to a lighting device, and more particularly to LED lighting device utilizing an AC power supply.
2Light-emitting diode (Light Emitting Diode; LED) is a compound semiconductor (compound semiconductor) of the PN diode formed through the light-emitting source for configuration by, a variety of colors of light to implement may in a kind of a semiconductor element to say. This light emitting element is a long service life, small size and light weight are possible, and low-voltage driving is possible that advantages are. Further, this LED is shock and resistant to vibration, warm-up time and a complicated driving is unnecessary, one mounted on a substrate or a lead frame in a variety of forms, and then to be able to package the modular several purposes backlight unit (backlight unit) and various It can be applied to a lighting apparatus.
3There is a plurality of light emitting diodes can be used to provide an independent lighting, wherein light-emitting diodes can be used are connected to each other in series or in parallel. At this time to place all the light emitting diodes on at all times by converting AC power of a commercial power source into DC it may be applied to the light emitting diode.
4In the above method requires a separate DC rectifier when used to provide a direct current power source, the other method can remove the configuration of the DC rectifier and can be applied directly to the AC power for the light emitting diode. At this time, the light emitting diodes may be connected in series to each other, it may be an on / off state of each of the LED changes according to the magnitude of the input voltage fluctuations. In this case, therefore, on / off states are repeated as are the reduced utilization of the flicker phenomenon occurs, and therefore there is a disadvantage that the LED light output efficiency is reduced.
5If there can even drive a lighting device consisting of a light emitting diode as the AC power supply eliminate or mitigate 1 flicker phenomenon, and to prevent the power factor decreases in accordance with (2) AC power operation, without using a DC power supply device it may be advantageous to use the AC power source.
6Meanwhile, the peak voltage of the commercial AC power source may be different for each region. At this time, when applying one of the illumination device using the LED in the AC power of different sizes brightness of the illumination device may vary, and may also vary power efficiency. Therefore, even if the AC power supply from each other is of a different size is needed for power supply AC LED lights that may indicate a uniform light output and efficiency.
<p id="p07" num="7">In the present invention, the present invention resolves the above-mentioned problem of the LED driving method of applying the AC voltage directly to increase the LED usage rate, and also to provide a technique of the LED driving device which can increase the light output efficiency.</p><p id="p08" num="8">In the present invention intends to provide a LED driving unit to support a heterogeneous power.</p>
<p id="p09" num="9"><Lighting that is connected between the LED status to automatically switch the series and parallel states device></p><p id="p10" num="10">The illumination unit in accordance with one aspect of the present invention is a light emitting unit including a first light-emitting light-emitting group by a current input terminal and a current output terminal, a current bypass output terminal, and the current input to the current input terminal; And a second light emitting group that is connected to receive at least a portion of the current output via the current output terminal. At this time, the current output terminals is adapted to selectively output a current or at least a portion of the current of all of the input current through the current input terminal, wherein the current bypass output terminals, Self said at least output a fraction of the current the current output stage If that is adapted to output a current remainder except said at least a portion of the current of the whole of the current.</p><p id="p11" num="11">In this case, the light emitting unit further comprises a first bypass connected between the current input terminal and the current output terminal, the first case of by-pass add-on state, the portion of the current input via the current input terminal the first and is allowed to flow through the bypass path to provide additional by-pass, when the first bypass portion of the off state has a current entered through the current input terminal is not to flow through the bypass path, switching between the first bypass portion oN state and oFF state can be controlled by the voltage of the current output terminal.</p><p id="p12" num="12">In this case, the first by-pass portion, a terminal coupled to the current output terminal connected to the other terminal resistance on the side of the first light-emitting group; Transistor coupled between the other terminal and the current input terminal; And may further include a bias voltage provided to the device to a predetermined potential difference is generated between the gate and the current output terminal of said transistor.</p><p id="p13" num="13">In this case, the light emitting unit further includes a second by-pass is connected between the output of the first light emitting group and the current bypass output terminal, when the first of the bypass portion on state and the second by-pass add-on state and, when the first bypass portion of the off state may be a second by-pass add-off state.</p><p id="p14" num="14">And said current output terminals, when the voltage applied to the current input terminal a first potential of the is adapted to at least output a portion of the current, the larger the second potential than the voltage applied to the current input terminal of the first potential If there may be adapted to output the whole of the current.</p><p id="p15" num="15">In addition, comprises the light-emitting unit is a backflow prevention further, the backflow preventing part, and the second bypass part and a connection point for connecting to the output of the first light emitting group, characterized in that the connected between the other terminal of the resistor can do.</p><p id="p16" num="16">In addition, the second light-emitting group, the other current input terminal, the other current output terminal, the other current bypass output terminal, and includes the second light emitting group emitted by the current input to the other current input terminal which it may be included in other light emitting unit. At this time, the other current input terminal is electrically connected to the current output terminal, the other current output terminals of the other current input terminal of the current all the second current or at least a second current in a portion of the input through the is adapted to selectively output the further character other current bypass output, and wherein the further current output terminal first of the at least some of the input current through the other current input terminal when said at least output only the portion of the second current It is output to the rest of the current other than the second current, and the lighting apparatus may include the further a third light-emitting group is connected to receive at least a portion of the output current provided by the other current output terminals.</p><p id="p17" num="17">In this case, the other light emitting unit is the other current and input include terminal and the further parts of another first bypass connected between the other current output terminal, in the case of the further first bypass add-on state, the addition and a part of the current input through the other current input terminal to flow through a second bypass path for providing said another first additional by-pass in the case where said another first bypass portion turned off, the further currents, through the input terminal of the input current is not to flow through the further by-pass path, switching between said another first bypass portion oN state and oFF state is controlled by the voltage of the other current output terminal that can be characterized.</p><p id="p18" num="18">In this case, the further first by-pass portion, a terminal being connected to the further current output terminal side of the other terminal is connected to another resistor and the second light-emitting group; The other transistor that is connected between another terminal and the other current input terminal of the further resistor; And the addition may be another device that provides bias voltage to the gate of the other transistor to a predetermined potential difference is generated between the other current output terminal further included.</p><p id="p19" num="19">At this time, the said another light-emitting unit, the further current comprises by-pass the output terminal and the first parts of two other second bypass connected between the output side of a light-emitting group, and wherein the further first bypass add-on state another case is the second bypass unit also turned on, if the other of the first bypass additional off-state and wherein the further second bypass part may also be characterized in that the off-state.</p><p id="p20" num="20">In addition, the other current output terminals, if the addition of another current and the voltage applied to the input terminal a third potential there is adapted to output a second current of the at least a portion, wherein the another voltage applied to the other current input terminal If the fourth potential greater than the third potential may be adapted to output a second current of the whole.</p><p id="p21" num="21">In addition, the other light emitting unit is yet further includes other non-return parts, and the further non-return unit, the second output section of the light-emitting group and the connection point to the further second bypass portion connected to the further resistor a can characterized in that connected between the other terminal.</p><p id="p22" num="22">The illumination unit in accordance with another aspect of the present invention is a power supply potential is supplied to the flexible power supply; Connected electrically to each other in the upstream in the downstream direction so as to have a sequence number and a plurality of light-emitting groups, that are powered from the power supply unit; First by-pass portion; And a second by-pass parts. At this time, the light-emitting group wherein each is included in the light emitting unit belongs to, at least one or more light emitting elements, and the first the second and the by-pass portion 2 by-pass section in all, the first light emitting any order of the second group, wherein a first bypass portion, is adapted to connect the upstream end of the random order of the second of the second light emitting group at the upstream end and the downstream than the first light emitting group of the first light-emitting group to the electrical enabling control, the second by-pass unit, and is adapted to connect a downstream end and a ground of the first light emitting group to the intermittent possibly electrically, the second bypass part and a connection point that is a downstream end, the connection of the first light-emitting group, and wherein at least the first by-pass unit and a connection point that is located upstream than the upstream end, the connection of the second light emitting group.</p><p id="p23" num="23">At this time, when the first bypass portion to connect the upstream end of the upstream end and the second light emitting group of the first light-emitting group, the first may be adapted to operate as a constant current source by-pass section. </p><p id="p24" num="24">Further, when a current flows through the first by-pass and the current will flow through the second by-pass, so that when it is a current flow through the first by-pass the current flow through said second bypass It can be. </p><p id="p25" num="25">In addition, the light emitting device is any of the second order of the third light emitting group at the downstream than the second light-emitting group; And another first comprises by-pass portion and another first portion 2 by-pass more, (a) that the further a first bypass portion, the upstream end is connected to the first by-pass section and the second light emitting group the downstream connection point than the first end and another upstream of the second light emitting group, and is connected to the downstream end of the second light-emitting group to the electrical enabling intermittent; Said another second bypass part, which is connected to the downstream end and the ground of the second light-emitting group to the electrical enabling intermittent; The further second connection points that bypass portion connected to a downstream end of the second light-emitting group, wherein the additional further first by-pass can be located upstream of the connection point is connected to the downstream end of the second light emitting group. Or (b) adapted to couple the another first bypass portion downstream end of the upstream end, the third light emitting group of the third light emission group any order - one, at the downstream than the second light-emitting group to the electrical enabling intermittent and; It said another second bypass part and the third is to be electrically connected to enable the enforcement of the downstream end and the ground and the light-emitting group; The further second connection points that bypass portion connected to a downstream end of the third light-emitting group, wherein the additional further first bypass can be positioned on the upstream than the connecting point which is connected to the downstream end of the third light-emitting group.</p><p id="p26" num="26">In this case, the light-emitting device further includes an anti-backflow, the backflow preventing portion, (a) and the second bypass part and the first connection point is a downstream end, the connection of the light-emitting group, and the first by-pass unit the between the second light emitting group upstream end which is connected to the connection point of, (b) said another second bypass part and the second connection point which is connected to the downstream end of the second light emitting group and the further first bypass portion and the second 2 between which is connected to the downstream end of the light-emitting group a connection point, and (c) the further the second bypass part and the third connection point being connected to the downstream end of the light-emitting group and the further first bypass portion and the second 3 can be characterized by at least connected to one of the connection point between the downstream end of which is connected to the light-emitting group.</p><p id="p27" num="27">In the present illumination device according to another aspect is the most upstream plurality of light-emitting group to the downstream of the outermost turn to a connected electrical linear from the invention; First circuit connecting the connection point and the ground between the light-emitting group; In included, and parallel to all the light emitting group of the most upstream from the light-emitting group, the most downstream during the potential increases in the AC power supply sequentially connected; and a second circuit to by-pass connecting the other connection point between the light emitting group or it is to switch in series connection, or, sequentially from the series connection of all the light emitting from the light emitting group of the most upstream of the most downstream group while the potential of the AC power supply is lowered to switch to the parallel connection. In this case, the respective light-emitting groups having one or more LED devices.</p><p id="p28" num="28">The illumination unit in accordance with another aspect of the present invention are connected in common to the first light emitting group, the first bypass section, a second bypass part, and the input terminal and the first by-pass negative input end of the first light emitting group wherein the light emitting unit including a current input terminal for supplying a first current to the light-emitting group and the first by-pass portion; And the first circuit being supplied to the current output from the output terminal of the first light emitting group in the state to be fed to the current output from the second circuit of the first bypass portion output from the state, the second light emission is connected to the light-emitting unit include; group. At this time, not to flow through in the first circuit state, the first and adapted to be the first by-pass add-off so that the current does not flow through the by-pass, the current output from the first light emitting group are parts of the second by-pass is such that the second bypass blocking portion. Further, in the second circuit state, the first and is so by bypassing a current to flow, and is at least a part of the current output from the first light emitting group to flow through said second by-pass, wherein when the current is supplied to the second group light emitting current flowing through the second by-pass is not to flow in the second light emitting group.</p><p id="p29" num="29">At this time, the second, and is such that by-pass portion output terminals connected to the ground, the light emitting unit, said first further comprising a current output terminal connected to the by-pass portion, the first bypass portion Block Status outputs the current It can be characterized in that it is controlled by the voltage of the terminal.</p><p id="p30" num="30">In this case, the first by-pass portion, a terminal coupled to the current output terminal connected to the other terminal resistance on the side of the first light-emitting group; Transistor coupled between the other terminal and the current input terminal; And may further include a bias voltage provided to the device to a predetermined potential difference is generated between the gate and the current output terminal of said transistor.</p><p id="p31" num="31">In addition, the first circuit state denotes a state having a first input voltage level, the first shows a condition 2 circuit condition having a second input voltage level, the first input voltage level than the second input voltage level It may be greater.</p><p id="p32" num="32" /><p id="p33" num="33"><Illumination unit capacitors are connected in parallel to the LED in order to reduce flicker></p><p id="p34" num="34">The illumination device according to an aspect of the present invention, a current input terminal, a current output terminal, a current by-pass the output terminal, the first light emitting group that emits light by a current input to the current input terminal, and both ends of the first light emitting group a light emitting unit including a condenser (capacitor) connected in parallel; It includes and a second light emitting group that is connected to receive at least a portion of the current output via the current output terminal. And the current output terminals is adapted to selectively output a current or at least a portion of the current in all of the current input via the current input terminals, wherein the current bypass output terminals, said current output terminal to said at least output a fraction of the current If there is output to the rest of the current other than the said at least a portion of the input current of the current through the current input terminal.</p><p id="p35" num="35">In this case, the light emitting unit further comprises a first bypass connected between the current input terminal and the current output terminal, the first case of by-pass add-on state, the portion of the current input via the current input terminal the first and is allowed to flow through the bypass path to provide additional by-pass, when the first bypass portion of the off state has a current entered through the current input terminal is not to flow through the bypass path, switching between the first bypass portion oN state and oFF state can be characterized in that it is controlled by the voltage of the current output terminal.</p><p id="p36" num="36">In addition, the first by-pass portion, a terminal coupled to the current output terminal connected to the other terminal resistance on the side of the first light-emitting group; Transistor coupled between the other terminal and the current input terminal; And may include a bias voltage provided to the device to a predetermined potential difference is generated between the gate and the current output terminal of said transistor.</p><p id="p37" num="37">At this time, the on-off state of the transistor, the transistor and the other terminal between the connection point of the first node and the transistors and the sum of the voltage across the both ends of the resistor to the voltage between the second node, a connection point between the bias voltage providing device this may be determined, depending on the pre-determined potential difference greater than or less than.</p><p id="p38" num="38">Also comprises the current bypass output terminals a second by-pass is connected between the output of the first light emitting group, the ground, the first case of by-pass add-on state and the second by-pass add-on state, the if the first by-pass add-off state can be characterized in that the second bypass portion in the oFF state.</p><p id="p39" num="39">In addition, the remaining current may be at least a portion or jeonbuil of the current flowing through the first light emitting group.</p><p id="p40" num="40">And it includes the light-emitting unit is further a backflow prevention, the backflow preventing part, and the second by-pass additional connection points for connecting to the output of the first light emitting group and, to be characterized in that connected between the other terminal of the resistor can.</p><p id="p41" num="41">In addition, the second light-emitting group, the other current input terminal, the other current output terminal, the other current bypass output terminal, the further the agent to be emitted by the current input to the other current input terminal 2, the light-emitting group, and at both ends of the second light emitting group it may be included in yet another light emitting unit including a capacitor connected in parallel. At this time, the other current input terminal is electrically connected to the current output terminal, the another character other current output said another current input terminal second current of the current or at least a part of all of the input current through a selective is adapted to output the further current bypass output terminals, the Also, if the other current output terminal for outputting only the second current of the at least some of the remaining current than the second current of the at least some of the second current of the whole and is adapted to output, the lighting apparatus may include the further a third light-emitting group is connected to receive at least a portion of the output current provided by the other current output terminals.</p><p id="p42" num="42">Further, the current output terminals, when the voltage applied to the current input terminal a first potential of the is adapted to at least output a portion of the current, the larger the second potential than the voltage applied to the current input terminal a first potential If there may be adapted to output the whole of the current. </p><p id="p43" num="43">The illumination device according to another aspect of the present invention, the power supply potential is supplied to the flexible power supply; Connected electrically to each other in the upstream in the downstream direction so as to have a sequence number and a plurality of light-emitting groups, that are powered from the power supply unit; First by-pass portion; And a second by-pass parts. At this time, the respective light-emitting groups, and at least one or more light emitting elements, the first by-pass section and the second bypass portion both, are included in the light emitting unit, serving any net-th of the first light emitting group, wherein a first bypass portion, is adapted to connect the upstream end of the random order of the second of the second light emitting group at the upstream end and the downstream than the first light emitting group of the first light-emitting group to the electrical enabling control, the second by-pass portion and is adapted to connect a downstream end and a ground of the first light emitting group to the electrical enabling intermittent. In this case, the second bypass part and a connection point that is a downstream end, the connection of the first light emitting group is located at the upstream than at least a connection point that is the upstream end, the connection of the first by-pass section and the second light-emitting group, the a plurality of light-emitting groups, each positive terminal and characterized in that a capacitor is connected in parallel.</p><p id="p44" num="44">At this time, when the first bypass portion to connect the upstream end of the upstream end and the second light emitting group of the first light-emitting group, the first may be adapted to operate as a constant current source by-pass section.</p><p id="p45" num="45">Further, when a current flows through the first by-pass and the current will flow through the second by-pass, so that when it is a current flow through the first by-pass the current flow through said second bypass It can be. </p><p id="p46" num="46">The illumination unit in accordance with another aspect of the present invention, a plurality of light-emitting groups linked by a linear electric to have a sequence number up to the most downstream from, the uppermost stream; First circuit connecting the connection point and the ground between the light-emitting group; In included, and parallel to all the light emitting group of the most upstream from the light-emitting group, the most downstream during the potential increases in the AC power supply sequentially connected; and a second circuit to by-pass connecting the other connection point between the light emitting group in all the light-emitting group of the most upstream from the most downstream of the light-emitting group during or is to switch in series connection, or the potential of the AC power supply sequentially in the descending series connection is adapted to switch to the parallel connection. At this time, the respective light-emitting groups having one or more LED elements, and both terminals of each of the plurality of light-emitting groups, characterized in that a capacitor is connected in parallel.</p><p id="p47" num="47">The illumination unit in accordance with another aspect of the present invention, the first light emitting group, the first bypass section, a second bypass part, and is connected in common to the input terminal and the first by-pass negative input end of the first light emitting group a light emitting unit comprising a current input terminal for supplying a current to the first light-emitting group and the first by-pass portion; And the first circuit being supplied to the current output from the output terminal of the first light emitting group in the state to be fed to the current output from the second circuit of the first bypass portion output from the state, the second light emission is connected to the light-emitting unit include; group. In this case, the not to flow through the first not to flow a current through the first by-pass in the first circuit state in which the first and are such that by-pass add-block, the current output from the first light emitting group are parts of the second by-pass 2 and is such that by-pass add-block, the first and the through 2 in-circuit condition part of the first bypass allow current to flow through at least a portion of the current output from the first light emitting group, said second by-pass and it is allowed to flow, the first light emitting group and each capacitor has the second light-emitting group and is characterized in that connected in parallel.</p><p id="p48" num="48">In this case, it is the first current through the by-pass flow or does not flow can be characterized in that it is controlled by the voltage of the first by-pass negative current output terminal.</p><p id="p49" num="49">In this case, the second bypass portion so that the output terminals may be connected to ground.</p><p id="p50" num="50">At this time, the second light-emitting group, will included in another light-emitting unit having the same configuration as the light emitting unit, the third circuit state being supplied to the current output at the output terminal of the second light emitting group in the fourth circuit state the receive again supplies a first current outputted from the bypass unit output terminal included in the other light emitting unit, and a third light-emitting group is connected to said another light-emitting unit, the third light-emitting group, the capacitor is connected in parallel It can be characterized in that.</p><p id="p51" num="51">In addition, the first circuit state indicates a first time interval between the second circuit state, the liver the first time period may represent a time interval between the other second.</p><p id="p52" num="52">In addition, the first circuit state denotes a state having a first input voltage level, the first shows a condition 2 circuit condition having a second input voltage level, the first input voltage level than the second input voltage level It may be greater.</p><p id="p53" num="53">The lighting apparatus according to another aspect of the invention, the current input terminal and a current output terminal, a current bypass output terminal, the light-emitting group being emitted by the current input to the current input terminal, connected in parallel to both ends of the light emitting group the first light emitting unit that includes a capacitor, and a first by-pass connecting said current input terminal and the current output terminal; The second light emitting unit having the same structure as the first light-emitting unit; It includes a; and the current input terminal and a current output terminal, the third light emitting unit comprising a capacitor connected in parallel to both ends of the light-emitting group, the light emitted by the group of current input to the current input terminals. At this time, it current output terminal of the first light emitting unit is connected to the current input terminal of the second light emitting unit, sleeping current output terminal of the second light-emitting unit is connected to the current input terminal of the third light-emitting unit, the first light emitting unit and for each of the second light-emitting unit, wherein the current output terminals is adapted to selectively output a current or a part of the current of all of the current input via the current input terminals, wherein the current bypass output terminals self said current output terminal the case of outputting only a part of the currents, is to output the remaining current than the current of the part of the whole of the current, the first light emitting unit and the second light emitting unit for each of said first by-pass add-on state a case and a part of the current input via the current input terminal to flow through the bypass path for providing said first by-pass portion, in the case of the second by-pass add-off state, through the current input terminal and the input current is not to flow through the bypass path, the first light emitting unit and the second light emitting unit for each - switching between said first by-pass portion on state and the off state the voltage of the current output terminal It characterized in that in regulated by.</p><p id="p54" num="54" /><p id="p55" num="55"><Lighting equipment that can be used in a heterogeneous Power></p><p id="p56" num="56">The illumination device according to an aspect of the present invention, the first light emitting section (= first LED part); The second light emitting section (LED = second portion); And according to the entered input power of the peak value includes a control voltage output adapted to output a control voltage, and the first light emitting unit and the second light emitting portion to each other in series connection and parallel connection based on the value of the control voltage It is adapted to the interconversion.</p><p id="p57" num="57">At this time, the control voltage output unit, the input of the power to hold the peak value of the peak detector is to output a peak voltage (Vpeak); And a voltage comparator adapted to output the control voltage has a value in a range corresponding to a second logic value otherwise it has a value in the range of the response to the first logic value is greater than the value of the predetermined said peak voltage It may include a.</p><p id="p58" num="58">At this time, the first logic value is a logical high or the second logic value is a logical low, or the first logic value is a logical low and the second logic value may be a logical high. </p><p id="p59" num="59">In addition, the peak detector may include a diode and a capacitor.</p><p id="p60" num="60">And a switch unit for connecting between the first light-emitting portion first upstream end and the second light-emitting portions of the second upstream-side; And a non-return connecting between the first light-emitting portion first end and the second downstream the upstream end may be further included. At this time, if the switch portion and the control voltage having a first logic value, is adapted to form a current path between the first upstream end and the second upstream end, when having the second logic value, so as to interrupt the current path It can be.</p><p id="p61" num="61">And the illumination apparatus includes a first driving unit; And and the second driving unit further comprises the first drive unit, when having the input power is a first value, is adapted to control the value of current through the parts of the first LED, the input power is greater than the first value when have a second value, and is not to control the value of current through the parts of the first LED, the second drive unit, when the input power source having the first value of the current flowing through the parts of the second LED It is to control the value and, when the input power having the second value may be adapted to control the value of the first LED unit 1, and a current flowing through the second LED.</p><p id="p62" num="62">In addition, the second internal circuit of the second driving unit, and the input power is to have a first configuration when having said first value, and is to have a second configuration when the input power source having the second value, wherein illumination device, the input power may be all to have the same light output when it has the second value and when it has the first value.</p><p id="p63" num="63">In addition, the first 1 LED unit comprises a plurality of LED groups (= LED channel, luminescent group), the plurality of LED groups are the downstream end from the upstream end of the plurality of LED groups when rising the voltage value of the input voltage there can be up to flash sequentially. </p><p id="p64" num="64">Also, includes the plurality of LED groups wherein the 1 LED unit is a plurality of LED group are connected between the plurality of LED groups when rising the voltage value of the input voltage related to transition from parallel connection to series connection there may be.</p><p id="p65" num="65">In addition, the second comprises a plurality of LED group 2 LED unit, the plurality of LED groups can be to turn on from the upstream end of the plurality of LED groups when rising the voltage value of the input voltage sequentially to the downstream end have.</p><p id="p66" num="66">In addition, and wherein the 2 LED unit includes a plurality of LED groups, are a plurality of LED groups are connections between the plurality of LED groups when rising the voltage value of the input voltage to be converted from parallel connection to series connection there may be.</p>
<p id="p67" num="67">According to the present invention, in the LED driving method of applying the AC power source directly, increasing the LED utilization and may provide a LED driving apparatus which can increase the light output efficiency, and to provide a LED driving unit that flicker is mitigated have.</p><p id="p68" num="68">Further, according to the present invention, a LED driving method in accordance with the peak value of the AC power supply voltage may provide a LED driving apparatus which can switch between a parallel connection state, LED driving device regardless of the input voltage of the AC power supply chonggwang the output can provide a LED driving apparatus can be adjusted to be equal.</p>
691 illustrates an example of a circuit of the direct AC power LED lighting device having a light-emitting group of four channels according to an embodiment.
70Of Figure 2 (a) shows an example on the time axis of the waveform of the input voltage (Vi) of the input power source of FIG. Of Figure 2 (b), (c), (d), and (e) is a current waveform of each light emitting group (CH1 ~ CH4) according to the input voltage (Vi) of each of Figs. 2 (a) (ID1 ~ It shows an example of ID4) on the time axis.
71Figure 3 illustrates an example of an LED lighting device and the operation principle of the first embodiment of the present invention.
724 illustrates an example of an LED lighting device according to a second embodiment of the present invention.
73Figure 5 shows the on / off state according to the input voltage of the respective switches included in the LED illumination device of FIG.
74Figures 6a 6e shows a circuit configuration of the LED illumination device 1 in the (P1 ~ P5) between each time interval.
75Figures 7a-7e shows an approximate equivalent circuit of the circuit according to Figure 6e to Figure 6a, respectively.
76Figure 8a is a diagram illustrating a structure of a light emitting device according to a fourth embodiment of the present invention.
77Figure 8b is shown in Figure 8a the power supply, the light-emitting group, the first bypass section, a second bypass part, illustrating a configuration example of the light emitting device.
789 is a view for explaining the structure of the LED lighting device 200 according to the fifth embodiment of the present invention.
7910 is a view for explaining the structure of the LED lighting device 300 according to the sixth embodiment of the present invention.
8011 is a view for explaining the structure of the LED lighting device 400 according to the seventh embodiment of the present invention.
8112 is for explaining an embodiment of the light emission units constituting the LED illumination apparatus according to the eighth embodiment of the present invention.
8213 is according to a ninth embodiment of the present invention, upon driving the LED directly to the AC power supply, illustrating the LED lighting device which is always applied to the current applied to the LED.
83Figure 14 illustrates separation by only one channel of any part in the circuit shown in Fig.
84Figure 15 (a) is the input current flowing through the non-return diode (D) shown in Fig. 14 (I<sub>k</sub>) Showing the waveform of the will, Fig. 15 (b) is a light emitting current flowing through the light emitting group (CH) (I<sub>LED</sub>Will showing a) the waveform of FIG. 15 (c) is a capacitor (C) flowing through the capacitor current (I<sub>C</sub>) Shows a waveform of a.
85Figure 16 shows the structure of the LED lighting apparatus according to a tenth embodiment of the present invention.
86Figure 17 shows the LED lighting device 700 according to an eleventh embodiment of the present invention.
87It shows the state when operated by the commercial power supply having: Figure 18a is an LED lighting device 700 of FIG. 17, the first voltage (120V ex).
88It shows the state when operated by the commercial power supply having: Figure 18b is a second voltage (277V ex) is higher than the first voltage LED lighting device 700 of Fig.
89Figure 19a and Figure 19b shows an example in which the circuit is applied to the lighting apparatus shown in Figure 1 as the part and the LED driving unit 17 presented in Fig.
90It will be described below with reference to the accompanying drawings, an embodiment of the present invention. However, the present invention can be implemented in various ways not limited to the embodiments described herein. As used herein are to aid the understanding of embodiments and are not intended to limit the scope of the invention. In addition, the singular forms used in the following are also included in a plurality of types of phrases that do not represent a meaning clearly contrary of.
911 illustrates an example of a circuit of the direct AC power LED lighting device having a light-emitting group of four channels according to an embodiment. In Figure 1, there illustrated that each contain three groups of light emitting LED 4 (CH1 ~ CH4). Current (I) is controlled so as to satisfy the total THD by the current source (CS1 ~ CS4) connected to the current output terminal of each light emitting group (CH1 ~ CH4). It is described in the operation principle of the Republic of Korea Patent Publication No. 10-2014-0100393 (08.14.2014) of the circuit according to Figure 1, the reference to the content disclosed in the Republic of Korea Patent Publication No. 10-2014-0100393 (08.14.2014) in the specification including a.
92Of Figure 2 (a) shows an example on the time axis of the waveform of the input voltage (Vi) of the input power source of FIG. Of Figure 2 (b), (c), (d), and (e) is a current waveform of each light emitting group (CH1 ~ CH4) according to the input voltage (Vi) of each of Figs. 2 (a) (ID1 ~ It shows an example of ID4) on the time axis. Also, according to two jimyeo each light emitting group (CH1 ~ CH4) current is time period and found to be present, the more the light-emitting group, far away from the AC power source current is not simple more prolonged period of time to flow to flow with respect to a current in accordance with the time the shape can be seen even closer to a square wave.
94<Lighting that is connected between the LED status to automatically switch the series and parallel states device>
95In the LED illumination device shown in Figure 1, in any of the first light emitting group and the second light emitting group, when the first light emitting group is assuming that the closer to the input power than the second light-emitting group, the input power the the length of the first time to power directly to the first light emitting point group is longer than the length of the second time to supply power directly to the input power source and the second light emitting group can be confirmed through FIG.
96In the lighting apparatus according to the first to the eighth embodiment of the invention the length of the first time it is possible to provide a configuration that may be the same as the length of substantially 2 hours.
97<u>First embodiment</u>
98Figure 3 illustrates an example of an LED lighting device and the operation principle of the first embodiment of the present invention.
99The LED illumination device 1 shown in Fig. 3 (a) is a plurality of light emitting groups (CH1 ~ CH2) are connected to each other. May be effected by the light-emitting group (CH1 ~ CH2) is made possible by converting from a serial connection and a parallel connection state, reconfiguration of such a connection are controlled the on / off state of the power distribution switch (CS1) and a bypass switch (BS1). ON / OFF states of the power distribution switch (CS1) and a bypass switch (BS1) can be automatically adjusted according to the magnitude of the input voltage (Vi).
1003 (a) to bypass the switch (BS1) and a distribution switch (CS1) from may be a transistor. An example of a transistor (Bipolar Transistor) BT, FET (Field Effect Transistor), IGBT (Insulated gate bipolar transistor) and the like. However, the scope of the present invention is not limited thereby.
101When bypass switch (BS1) is operating in a non-saturation region, the magnitude of the current (Ip1) flowing through the bypass switch (BS1) can be determined by the ratio of the value of the bias voltage (Vp1) and the resistor (R1). That is, the bypass switch (BS1), a current source may be provided by a resistor (R1) and bias voltage (Vp1). In contrast, when bypass switch (BS1) is operating in a saturation region bypass switch (BS1) may exhibit properties similar to the resistance.
102In addition, the power distribution switch (CS1) can be determined by the ratio of the value of the size is, the bias voltage (V1) and the resistor (Rs) of the current (I1) flowing through the power distribution switch (CS1) when operating in a non-saturation region have. That is, the power distribution switch (CS1), may be provided with a current source by a resistor (Rs), and a bias voltage (V1). Alternatively, if the power distribution switch (CS1) is operating in a saturation region distribution switch (CS1) may exhibit properties similar to the resistance.
1033 (b) shows the voltage and current characteristics according to time at each node and the element of the LED lighting device 1 shown in Fig. 3 (a).
104For the convenience of the following description both the forward voltage of the light emitting group (CH1 ~ CH2) it is assumed that the Vf. And bypass switch (BS1), the power distribution switch (CS1), the maximum current value I distribution switch designed to flow through the (CS2), respectively<sub>BS1</sub>, I<sub>CS1</sub>, I<sub>CS2</sub>It is assumed that design.
105When the input voltage (Vn1) at a node (n1) is present between 0 ~ Vf does a current flow through the circuit.
106When the input voltage (Vn1) is present between Vf ~ 2Vf, bypass switch (BS1) and a distribution switch (CS1) is operating as a current source operates in the non-saturation region, the power distribution switch (CS2) are operable in the saturation region can. At this time, through the bypass switch (BS1) and a distribution switch (CS2) I<sub>BS1</sub> The magnitude of the current can flow. And this time, the magnitude of current flowing through the power distribution switch (CS1) is, I<sub>CS1</sub>In the value of the current flowing through the power distribution switch (CS2) I<sub>BS1</sub>This can be a minus. And the light emitting group (CH1) current (ID1) flowing through a power distribution is the value of the current flowing through the switch (CS1) (I<sub>CS1</sub>-I<sub>BS1</sub>) And the same, and the current flowing through the light emitting group (CH2) (ID2) is the value of the current flowing through the power distribution switch (CS2) (I<sub>BS1</sub>) And the same. At this time, and it does not flow a current through the diode (D1) because the input voltage is not high enough.
107If the input voltage (Vn1) is not less than the 2Vf it is through a diode (D1) to a state in which current can flow. At this time, as an additional current through the diode (D1) to the resistor (R1) flowing the bypass switch (BS1) it is to be switched off. And the distribution switch (CS2) comes into operation in the non-saturation region, the power distribution switch (CS1) can be switched off. At this time, through the distribution switch (CS2) I<sub>CS2</sub> The magnitude of the current can flow. And the light emitting group (CH1) light emitting group (CH2) a current (ID1) flowing through a power distribution is the value of the current flowing through the switch (CS2) (I<sub>CS2</sub>) And the same.
108<u>The second embodiment</u>
1094 illustrates an example of an LED lighting device according to a second embodiment of the present invention.
110LED lighting device 1 shown in Figure 4 modified to extend the LED lighting device shown in Fig. 3 (a).
111A plurality of light emitting groups (CH1 ~ CH5) are connected to each other LED lighting device 1 according to Fig. May be effected by the light-emitting group (CH1 ~ CH5) is may ohgal serial and parallel state, reconfiguration of such a connection are controlled the on / off state of the power distribution switch (CS1 ~ CS4) and the bypass switch (BS1 ~ BS4). ON / OFF states of the power distribution switch (CS1 ~ CS4) and the bypass switch (BS1 ~ BS4) can be automatically adjusted according to the magnitude of the input voltage (Vi).
112Figure 5 shows the on / off state according to the input voltage of the respective switches included in the LED illumination device of FIG.
113Graph 143 of Figure 5 (a) shows the size of the time of the input voltage (Vi) according to an embodiment. The input voltage may be given in various forms such as square wave, saw-tooth, and may be different from a triangle wave form, as shown in Fig. 5 (a).
114Size 5, the input voltage (Vi) is may be divided into a plurality of voltage sections (LI0 ~ LI5), each voltage interval (LI0 ~ LI5) can correspond to between a plurality of time interval (P0 ~ P5) . The length and position of the time interval between a plurality of (P0 ~ P5) on the time axis (t) may be determined by the specific value of the forward voltage of the light emitting group (CH1 ~ CH5) shown in Fig.
115In each time interval (P0 ~ P5) shown in Figure 5 (a), the LED circuit in accordance with an embodiment of the present invention can operate in the steady state (steady state). However, the time interval between each of (P0 ~ P5) can operate in the transition state (transient state) which is a transition state of the LED circuit. In the present specification it will be mainly described for the normal state for the convenience of explanation.
116Each column (row) represents a time interval (P0 ~ P5), each row (column) the time period of each of the switches (BS1 ~ BS4, CS1 ~ CS5) shown in Figure 4 (P0 in Fig. 5 (b) ~ P5) shows the on / off state in accordance with the. This change in the on / off state can be made automatically by the primary structure of the LED lighting device 1 shown in Fig.
117Hereinafter, the operation principle of the LED illumination device 1 in accordance with Figure 5, with reference to FIG. 3 to FIG. 6, and FIG.
118Figures 6a 6e shows a circuit configuration of the LED illumination device 1 in the (P1 ~ P5) between each time interval. And Figure 6a shows the configuration of the LED lighting device 1 in the time period (P1) as well as the time period between (P0).
119In the time interval (P0) it can be still input voltage (Vi) state size that none of the light-emitting groups (CH1 ~ CH5) turn on, because of the sufficiently large.
120Since the time period (P1) in the bypass switch (BS1 ~ BS4) and the distribution state switch (CS1 ~ CS5) are both turned on, will have the same circuit structure of the circuit shown in Fig. 4 and Fig. 6a. At this time, the bypass switch-on of the switch (BS1) and a distribution switch (CS1) is to operate in a non-saturation region can serve as a current source. And the rest of the switch-on switch may operate in a saturation region. At this time, since the back-flow preventing diode it is higher than the voltage of the cathode voltage of the anode of the (D1, D2, D3, D4) both ends of these diodes can be considered to be open. Therefore, the circuit shown in Figure 6a can be expressed by the equivalent circuit as in Figure 7a.
121The time interval (P2), the bypass switch (BS2 ~ BS4) and distribution switches (CS2 ~ CS5) are both turned on and the bypass switch (BS1) and distribution switches (CS1) are all turned off because it is shown in Fig. 4 circuit also It will have the same circuit structure and 6b. In the case where the switch of the bypass switch (BS2) and the distribution switch (CS2) may be turned on to operate in a non-saturation region to act as a current source. And the rest of the switch-on switch may operate in a saturation region. At this time, since the back-flow preventing diode voltage higher than the voltage of the cathode of the anode (D2, D3, D4) both ends of these diodes can be considered to be open. Therefore, the circuit shown in Figure 6b can be represented by the equivalent circuit as shown in Fig. 7b.
122The time interval (P3), the bypass switch (BS3 ~ BS4) and distribution switches (CS3 ~ CS5) are both turned on and the bypass switch (BS1 ~ BS2) and distribution switches (CS1 ~ CS2) are all turned off, because it is also 4 the circuit is shown to have the structure of a circuit as in Figure 6c. In the case where the switch of the bypass switch (BS3) and a distribution switch (CS3) on, can operate in a non-saturation region to act as a current source. And the rest of the switch-on switch may operate in a saturation region. At this time, since the back-flow preventing diode voltage higher than the voltage of the cathode of the anode (D3, D4) both ends of these diodes can be considered to be open. Therefore, the circuit shown in Figure 6c there will be represented by an equivalent circuit as shown in Fig. 7c.
123Time period (P4), the bypass switch (BS4) and distribution switches (CS4 ~ CS5) are both turned on and the bypass switch (BS1 ~ BS3) and distribution switches (CS1 ~ CS3) is all because the off state shown in Fig. 4 circuit is such as to have a circuit structure of Figure 6d. In the case where the switch of the bypass switch (BS4) and a distribution switch (CS4) on, can operate in a non-saturation region to act as a current source. And the rest of the switch-on switch may operate in a saturation region. At this time, the voltage of the anode of the back-flow preventing diode (D4) is higher than the voltage of the cathode ends of these diodes can be considered to be open. Therefore, the circuit shown in Figure 6d can be represented by the equivalent circuit as shown in Fig. 7d.
124In the time interval (P5) distribution switch (CS5) is turned on and the structure of the bypass switch (BS1 ~ BS4) and a distribution switch (CS1 ~ CS4) are all turned off, it is because as shown in FIG. The circuit shown in Figure 4 6e circuit It will have. At this time, the power distribution switch (CS5) operates in the non-saturation region can serve as a current source. May be represented by the circuit shown in Figure 6e is an equivalent circuit as shown in Fig. 7e.
125Fig. Figure 7a to 7e are as described above can be understood as indicating the approximate equivalent circuit of the circuit according to Figure 6e to Figure 6a, respectively.
126Looking at Figure 7a to the equivalent circuit shown in Fig 7e, the circuit structure can be of the LED lighting device 1 shown in Fig appreciated changed depending on the magnitude of the input voltage (Vi).
127In view showing a configuration of the time period (P1) 7a luminescent group (CH1 ~ CH5) are connected to each other in parallel.
128In view showing the between (P2) time period 7b light emitting group (CH2 ~ CH5) and are connected to each other in parallel, the light emitting group (CH1) is connected to these in series.
129In view showing a cross (P3) light emitting time period 7c group (CH3 ~ CH5) and are connected to each other in parallel, the light emitting group (CH1 ~ CH2) is connected to these in series.
130In view showing the between (P4) the light emitting time period 7d group (~ CH4 CH5) and are connected to each other in parallel, the light emitting group (CH1 ~ CH3) are connected to these in series.
131In view showing a cross (P5) the light emitting time period 7e group (CH1 ~ CH5) are connected to each other in series.
132Can be defined as in Fig. 7a to 7e of the circuit, the time interval (P1 ~ P5) respectively, the LED lighting device a sum of the currents respectively Itt1, Itt2, Itt3, Itt4 that the entry and exit, in Itt5. At this time, Itt5> Itt4> Itt3> Itt2> can be designed to satisfy the relationship Itt1. If this design, because it indicates a tendency to increase along with the sum of the current supplied with an increase in the magnitude of the input voltage (Vi) to improve the power factor of the LED lighting device.
133<u>Third Embodiment</u>
134Or less, the above-described Itt5> Itt4> Itt3> Itt2> will be described with reference to the third embodiment of Figures 7a-7e, which is designed to satisfy the relation of Itt1.
135Operates from the power distribution switch (CS1) is a non-saturation region in Fig. 7a, I1 + I2 + I3 + I4 + value of I5 so that the same value as the ICS1 maximum current value that can distribution switch (CS1) is passed, I1 this value is adjusted. At this time, the ratio between the sum of I1 + I3 + I4 + I5 and is I2, the bypass switch (BS1) can be determined by the maximum current value (IBS1) that provides, when operating as a current source. Therefore Itt1 = I<sub>CS1</sub>It is established.
136Distribution switch (CS2) in Figure 7b is operated in non-saturation region, I2 + I3 + I4 + I5 value of the distribution of the maximum current value that can switch (CS2) passes I<sub>CS2</sub>And, the value of I2 is controlled so that the same value. At this time, the ratio between the sum of I2 and I3 + I4 + I5 is, the maximum current value to bypass switch (BS2) is provided to operate as a current source (I<sub>BS2</sub>) It can be determined by a. Therefore Itt2 = I<sub>CS2</sub>It is established.
137Power Distribution Switch (CS3) in Fig. 7c operates in non-saturation region, I3 + I4 + I5 value of the maximum current that can power distribution switch (CS3) I passed<sub>CS3</sub>And, the value of I3 is adjusted to the same value. At this time, the ratio between the sum of I3 and I4 + I5 is, bypass switch (BS3) the maximum current value that is provided to operate as a current source (I<sub>BS3</sub>) It can be determined by a. Therefore Itt3 = I<sub>CS3</sub>It is established.
138Distribution switch (CS4) in Figure 7d is operated in non-saturation region, I4 + I5 value of the maximum current value which can switch the power distribution (CS4) are passed through I<sub>CS4</sub>And, the value of I4 is controlled to be the same value. At this time, the ratio between I4 and I5 is the maximum current to bypass switch (BS4) is provided to operate as a current source (I<sub>BS4</sub>) It can be determined by a. Therefore Itt4 = I<sub>CS4</sub>It is established.
139Distribution switch (CS5) in Figure 7e is operated in non-saturation region. Therefore Itt5 = I<sub>CS5</sub>It is established.
140In a particular moment in order to make uniform as possible a relative brightness between the light emitting group (CH1 ~ CH5), the switch (CS1 ~ CS5, BS1 ~ BS4) are to be designed by optimizing the value of the maximum current that can be provided when operating as a current source can.
141<u>Fourth Embodiment</u>
142Figure 8a is a diagram illustrating a structure of a light emitting device according to a fourth embodiment of the present invention.
143In Figure 8a the light emitting device 100 may be the above-described LED lighting device (1).
144The light emitting device 100, and the power supply potential be combined capsule 10 and a plurality of light emitting groups (20) for supplying a variable available power.
145In this case, each light emitting group (20) at least includes one or more light-emitting element 901, connected electrically to each other in the upstream in the downstream direction so as to have a sequence number and is to be fed with power from the power supply (10). Here, "upstream" may mean that the means that is closer disposed at the current output terminal of the power supply section 10, and 'downstream' is disposed further away from the current output terminal of the power supply (10).
146And the light emitting device 100, an arbitrary order of the second of the first light emitting group of the random order of the second of the downstream than the upstream end and the first light emitting group 20, 21 of 20, 21 second light emitting group 20, 22, the electrically connecting the upstream end to enable the contact-breaker 1 may include a by-pass section 30. Where "upstream end" is the power of the terminal provided in the terminals closer to the terminal (that is, the current flowing terminal) the mean and "downstream end" is the light-emitting group to the power supply (10) of the supplied to the light emitting group supply 10 It may mean from the more remote terminals (i.e., current drain terminal). Here means the "intermittent possible" is not called, the first by-pass section 30 is provided both terminals can form a flow channel of the current block, or in between.
147And the light emitting device 100, the first light emitting group (20, 21) the downstream end and the second light emitting group 20, the downstream end or the second light emitting group any order - one, at the downstream than 20, 22 of the 3 may include a second bypass portion (40) connecting the downstream end of the light emitting group (20, 23) and electrically enables intermittent. Here it means the "intermittent possible" is not called, the second by-pass section 40 is provided both terminals can form a flow channel of the current block, or in between.
148Figure 8b is shown in Figure 8a power supply unit 10, the light emitting group 20, the first by-pass section 30, a second bypass part 40, the light emitting element 901 is shown for. And the light emission of the group 20, the first one will be displayed with a specific embodiment of the by-pass section 30, a second bypass portion (40). These embodiments are applied to the LED lighting device of Fig. At this time, it is possible by the interrupted first of the circuit between the by-pass section 30 is provided both terminals (T1, T2) is bypassed to the switch (903) (BS). First by-pass section 30, the third terminal (T3) may be provided selectively in accordance with an embodiment. And the second step speed is possible by a switch of the power distribution circuit (902) (CS) between the by-pass section 40 is provided to both the terminals (T1, T2).
149Below, in various embodiments of the disclosure, the power supply 10 may also be referred to by the term "rectifying" or "power supply".
150And the light emitting group 20 may be referred to by the term "light-emitting-channel" or "LED light-emitting group.
151And a first by-pass portion 30 may also be referred to by the term "circuit jumping", "bypass line", "first circuit".
152And second by-pass portion 40 may also be referred to by the term "distribution circuit," "second circuit".
153And the light emitting element 901 may also be referred to by the term "LED cells ',' LED element.
154And the bypass switch 903 may also be referred to as "jump switches.
155<u>The fifth embodiment</u>
1569 is a view for explaining the structure of the LED lighting device 200 according to the fifth embodiment of the present invention.
157LED lighting device 200 can be supplied with operating power from the AC power supply (90).
158LED lighting apparatus 200 includes at least one or more LED cells 901, and may include the N linear emission channel 20 connected to the (N is a natural number of 2 or more).
159And the LED lighting apparatus 200 may include a rectifying section 10 for rectifying the AC power supply 90 is electrically connected to the starting end of the emission channel 20, so that power is supplied to the last stage of the light channels have. Here, the starting end refers to the emission channel that is closest place to the current output terminal of the rectifying section 10 of the light channel (20), and the last stage may refer to the emission channel is disposed furthest.
160And the LED lighting device 200, a plurality of power distribution circuit comprising a distribution switch 902 for interrupting a current flowing on to the branches in each connector being connected to ground, the connection between the emission channel (20) ( It may comprise 40).
161And the LED lighting device 200, the light-emitting channels 20 is branched at the input of the M-th emission channel (20, 211) of being connected to the input of the M + 1-th light emission channel (20, 212), the connection to the may include a jumping circuit 30 including a jump switch 903 to regulate the current flowing in the phase (where, M is 1 or more and N-1 less than a natural number).
162And between the LED light device 200, the input terminal of the M-th emission channel (20, 211) and the M + 1-th light emission channel (20, 212) connection and the M + 1-th light emission channel (20, 212) between the is placed on the line, jump circuit 30, the through M + 1 beonjjae emission channel prevent the current flowing to the input terminal (20, 212) reverse to prevent flowing toward the rectifying unit 10, unit further comprises a (904) can do.
1639 there is shown with an embodiment of the backflow prevention unit 904. Backflow preventing part 904 may be implemented with a diode (D) or a transistor. An example of a transistor as described above. An example of these implementations may be applied to the LED lighting device 1 shown in Fig. Backflow preventing part 904 may be implemented as a non-diode (D) transistor, in which case it is possible to control the on / off state of the transistor according to the respective time interval (P0 ~ P5) shown in Fig.
164A jump circuit 30 shown in Figure 9, the emission channel (20), and distribution circuit 40 is implemented as a first bypass portion, the light-emitting group, and the second the same structure as the by-pass unit illustrated in each of Figures 8a may.
165<u>Sixth embodiment</u>
16610 is a view for explaining the structure of the LED lighting device 300 according to the sixth embodiment of the present invention.
167LED lighting apparatus 300 may have at least one or more plurality of LED light emission LED group 20 is connected in turn structure with the element 901.
168And the LED lighting device 300, LED light emitting group (20) of the can end to a power supply for applying an alternating-current power to the light emitting side of the LED groups (20, 203) (10).
169And the LED lighting device 300, LED light emitting group (20) of the can comprises at least any one of claim 1 LED light-emitting group bypass line 30 connecting the input end and an output end (20, 204).
170And the LED lighting device 300, bypass line 30 is disposed on the power supply 10 is next LED light emitting group (20, 205 of the potential of the power source of claim 1 LED light emitting group (20, 204) for supplying ) if no more than a possible turn-on potential, may include a bypass switch 903 to close the bypass line 30.
171Implemented by a bypass line (30), LED light emitting group 20, and a power distribution circuit 40 has a first bypass portion, the light-emitting group, and the second the same structure as the by-pass unit illustrated in each of Figures 8a shown in FIG. 10 It may be. At this time in the current output terminal of the unit 904 prevents the above-described reverse flow between the current output terminal of said 1 LED light emitting group (20, 204) of the bypass line 30 is disposed, the current output of the bypass line 30 terminal It is the current output from the can is not to be flowed toward the claim 1 LED light emitting group (20, 204).
172<u>Example 7</u>
17311 is a view for explaining the structure of the LED lighting device 400 according to the seventh embodiment of the present invention.
174LED lighting apparatus 400 may be supplied with the drive power from the AC power supply (10).
175LED lighting device 400 may include a plurality of light emitting groups (20). In this case, each light emitting group (20) can have at least one LED comprises an element 901, as to have a linear sequence from the most upstream to most downstream is electrically connected. Here, "uppermost" represents a position closest to the current output terminal of the power supply (10), 'downstream' indicates the furthest away.
176And the LED lighting device 400 may include a first circuit (30) which by-pass the point of connection between the light emitting group (20).
177And the LED lighting apparatus 400 is the so that the AC power applied to the light emitting group 20, the light emitting group of the relatively downstream side of the light-emitting group, the upstream side of the while rising the potential of the alternating current power supply 10 is supplied, first, the connecting point of connection with the ground may comprise a second circuit (40).
178At this time, any of the light emitting group (20) current output terminal, the non-return added between the current output terminal of said first circuit (30) that is adapted to by-pass the current that can flow in any of the light-emitting groups 20 of there may be disposed. At this time, the current output from the current output terminal of the first circuit section 30 is disable to pass through the non-return.
179<u>Eighth Embodiment</u>
18012 is for explaining an embodiment of the light emission units constituting the LED illumination apparatus according to the eighth embodiment of the present invention.
181Of Figure 12 (a) is a block diagram of a light emitting unit (2) according to an embodiment of the present invention. A light emitting unit (2) it may have a three input and output terminals of the current input terminal (TI), a current output terminal (TO1), and by-pass current output terminal (TO2).
182And a light emitting unit (2) may include a first bypass portion 30, the light emitting group 20, and a second bypass portion (40). And a light emitting unit (2) may optionally include a backflow prevention unit 904.
183First when it is across the self-connection of the bypass portion 30 (i.e., the first by-time via path a current flows), the second is also connected to the positive terminal of the bypass portion 40 (that is, the second current flow) through the by-pass. And also the first positive terminal of the by-pass part has a second by-pass section 40. When the both ends of self-opened state of 30 (that is, when the first not flow a current through the by-pass) can be left open (that is, a current does not flow through the second by-pass).
184Therefore, the first case both ends of self is connected in by-pass section 30, the current input terminals, some of the current inputted through the (TI) is input to the light emitting group 20, the other part is the first bypass portion (30 ) it can be bypassed to the path provided by the. And at least a portion or all of the current output from the output terminal of the light emitting group (20) current output terminal (TO1) as is bypassed through the second bypass portion 40 is not output current bypass output terminal (TO2 ) it can be output to. And a first current through the path provided by the by-pass section 30 can be output to the current output terminal (TO1).
185Alternatively both ends of the first party if the current input through the open-state, the current input terminal (TI) of the by-pass section 30 is input to all light emitting groups (20). And all of the current output from the output terminal of the light emitting group 20 may be output to the current output terminal (TO1).
186Current bypass output (TO2) may be connected to the resistance. The resistance, for example resistance of Figure 4 (R<sub>S</sub>) It can be. By the value of the voltage (V) input to the distribution switch (CS) of the value of the resistance and in Figure 12 (b), the value of the current flowing in the power distribution switch (CS) can be determined.
187(B) of Figure 12 shows an embodiment of a light emitting unit (2) shown in FIG. 12 (a). An example implementation of the light-emitting unit (2) according to the FIG. 12 (b) is applied to the LED lighting device 1 of Fig.
188Figure 12 (c) shows a LED lighting device 600 according to an embodiment of the present invention completed by connecting the light emitting unit (2) shown in FIG. 12 (a).
189LED lighting device 600, the light emitting group 20, the current input terminal (TI), a current output terminal (TO1), and the current bypass output terminal light-emitting unit including the (TO2) (2) comprises at least one can do.
190At this time, the current output terminal (TO1) is selectively output to a current input terminal (TI) all or part of the current of the current of the input current through. And current by-pass output (TO2) is the case that the current output terminal (TO1) output only the portion of the current is output to the rest of the current other than the current of the whole of the portion of the current. And this time, the remaining current may be a current flowing through the light-emitting group.
191Current output terminal (TO1) of the light-emitting unit (2) it can be connected to the other light emitting group (20). In this case, the other light emitting group (20) may be included in the other light emitting unit, or may not.
192And current by-pass output (TO2) of the light-emitting unit (2) may be connected to the current output terminal of the other light emitting group (20). In this case, the other light emitting group (20) may be included in the other light emitting unit, or may not.
194<Illumination unit capacitors are connected in parallel to the LED in order to reduce flicker>
195As can be seen from Fig 2, the variation in brightness of each light emitting group (CH1 ~ CH4) has a frequency twice of the frequency of the input voltage (Vi). This phenomenon, and is 100% when viewed as a percentage flicker generally appears as in a direct AC power LED lighting device illustrated in FIG.
196In the ninth to tenth lighting device according to an embodiment of the present invention may provide a configuration in which the capacitor is connected in parallel to the LED in order to reduce the flicker.
197<u>Example 9</u>
19813 is according to a ninth embodiment of the present invention, upon driving the LED directly to the AC power supply, illustrating the LED lighting device which is always applied to the current applied to the LED. Referring to Figure 13, there is connected to the non-return diode (D, D1 ~ D3) in series between the respective light emitting groups (CH1 ~ CH4). And there are respective capacitor (C1 ~ C4) is connected in parallel with each light emitting group (CH1 ~ CH4).
19914 is shown full sheets only one channel part in any of the circuits shown in Fig. 14 is a connection to the capacitor (C) in parallel to the light emitting group (CH) corresponding to the any one channel. Non-return diode (D) is connected in series to the light emitting group (CH) and a capacitor (C). Light emitting group (CH) may be composed of more than one LED.
200Figure 15 (a) is the input current flowing through the non-return diode (D) (I<sub>k</sub>) Showing the waveform of the will, Fig. 15 (b) is a light emitting current flowing through the light emitting group (CH) (I<sub>LED</sub>Will showing a) the waveform of FIG. 15 (c) is a capacitor (C) flowing through the capacitor current (I<sub>C</sub>) Shows a waveform of a. Specific shape of the graph shown in (b) and (c) 15 may vary depending on the capacitance of the capacitor (C).
201Input current (I<sub>k</sub>) If the input through a diode (D), the input current (I<sub>k</sub>) Are light-emitting current of the capacitor (C) and the light emitting group (CH) and the voltage of the light emitting group (CH) divided flows, a capacitor (C) is to increase, accordingly (I<sub>LED</sub>) Also increase.
202Input current (I<sub>k</sub>) Is discharged from the capacitor (C) when they are entering a, the current due to the discharge flows into the light emitting group (CH).
203It can take a long time to discharge the larger the capacitance of the capacitor (C). The half cycle of the input power that is the discharge time (for example, 60hz power source for 1/120 second) sufficiently larger than the current flowing through the light emitting group (CH) is not zero, a value more than a certain level is maintained. Therefore, the light emitting group (CH) does not turn off, but will be the dark with time. A capacitor (C) The capacity is more current flowing through a light emitting group (CH) is more smooth increase costs reduce the flicker.
204It is possible to provide the first embodiment to the eighth embodiment of a portion of another embodiment of the configuration of an condenser shown in FIG. 13, described in each example.
205<u>The tenth embodiment</u>
206Figure 16 shows the structure of the LED lighting apparatus according to a tenth embodiment of the present invention.
20716 is a second example modified from the circuit according to the embodiment FIG. 4, a total of five light-emitting group (CH1 ~ CH5) Yes, but I heard is connected, also 16, a total of four light-emitting group (CH1 ~ CH4) have heard different points connected for example. And 4, but not the capacitor is connected to each light emitting group (CH1 ~ CH5), Figure 16, the different point is that the capacitor (C1 ~ C4) to each light emitting group (CH1 ~ CH4) that are connected in parallel.
208By the same principle described in the ninth embodiment, the respective light emitting groups (CH1 ~ CH4) to the AC power is the time interval does not transfer power directly in Figure 16, each capacitor (C1 ~ C4) is accumulated to their because it provides energy that to each light emitting group (CH1 ~ CH4), if the capacitor (C1 ~ C4) have a sufficient capacity of each light emitting group (CH1 ~ CH4) has easily that it can always be to flow a large current greater than zero I can understand.
209With the above-described tenth embodiment, the same way, the capacitor in the positive terminal (T1, T2) of the light emitting group 20 shown in FIG. 12 (a) can be connected in parallel. In addition, the capacitor between the current input terminal and the current output terminal of the light emitting group (CH) shown in (b) in Figure 12 may be connected in parallel.
211<Lighting equipment that can be used in a heterogeneous Power>
212First embodiment to tenth embodiment (or 1 to 16) for applying one of the illumination device to the AC power of different sizes using the LED is on may vary the brightness of the illumination device. Second brightness of the illumination device in the case for example having a second value greater than the first brightness of the first value of the illumination device when the AC power source having a first value can be different from each other. As well, if the connection is optimized for AC power of a certain size inflorescence a lighting device designed specifically for the alternating current power of a different size, its efficiency may be extremely degraded or not working properly.
213In the eleventh embodiment to the twelfth embodiment of the illumination unit in accordance with the present invention, even if applying an alternating-current power supply of the different sizes can be provided a configuration of the LED lighting apparatus that can represent the output and efficiency of uniform light.
214<u>11th embodiment</u>
215Figure 17 shows the LED lighting device 700 according to an eleventh embodiment of the present invention. Even when viewed with reference to 17, LED lighting device 700 is a power supply (10), LED (11, 12), the control voltage output unit 13, a drive unit (16, 17), the switch section 18, and It may be made of a non-return part 19.
216It said power supply unit (10) refers to an output power supply unit or power supply to a waveform that repeats increase and decrease with time, for example, may output a ripple having a period of 100Hz or 120Hz. The peak voltage may for example have a value of 120V * 1.414 or 277V * 1.414. And the LED (11, 12) may include one or more LED groups (20). In this case, LED unit may be referred to as 11 and 12, each LED group 20 channels or the individual LED groups included in the light emission. For example, the one LED unit when the N LED groups present in one LED unit may be viewed as the N LED channel exists. In the eleventh embodiment of the present invention it will now be assumed that the LED lighting device includes the LED 1 and the second part (11) 2 LED unit 12 to 700. And it can be referred to as the LED unit light-emitting section.
217The control voltage output unit 13 may be formed of a peak detector (peak detection), (14) and the voltage comparator (15). Peak detection unit 14 is, for example, the power supply may hold (hold) output by the peak value (Vpeak) of the output voltage of 10. Voltage ratio issued 15 outputs the control voltage (Vcon) compared to the pre-set value the peak value (Vpeak). The control voltage (Vcon) is greater than the value of the peak value (Vpeak) set in advance, for example has a value of the interval corresponding to the logical high, otherwise it is to have a value in the interval corresponding to a logical low. At this time, depending on when the control voltage (Vcon) is the peak value (Vpeak) has the value of the interval corresponding to the larger logical low than that the pre-set, or else may have a value in the interval corresponding to the logical high . The preset value may be provided using a voltage divider (R1 / R2) with the voltage ratio grant (15).
218The LED (11, 12), can be connected to a driving unit (16, 17). The first LED unit 11 can be coupled to the first driving unit 16, a second LED unit 12 may be connected to the second drive (17).
219A first drive (16) is characterized in that the on / off state (that is, enabled (enable) / disabling (disable)) according to the logic value of the control voltage (Vcon) is the state interconversion.
220However, the second driving unit 17 is not ON / OFF state is not switched between depending on the logic value of the control voltage (Vcon), always maintains the on state. However, the second driving unit may 17 vary the configuration of the inside (configuration) according to the logic value of the control voltage (Vcon).
221LED lighting apparatus 700 is the first voltage (ex: 120V) when operated by a commercial power supply having a current flowing through the first LED unit 11 may be controlled by the first driving unit 16 .
222However, the LED lighting apparatus 700 is the second voltage (ex: 277V) higher than the first voltage when operating by a commercial power supply having the first drive unit 16 is in a disable state, the first LED current flowing through the section 11 can be controlled by the second driving unit 17 is not controlled by the first driving unit (16).
223On the other hand, LED lighting device 700 is the first voltage (ex: 120V) when operated by a commercial power source having, a second LED unit current flowing through the 12 is to be controlled by the second driving unit 17 can.
224And the LED lighting apparatus 700 is the second voltage (ex: 277V) higher than the first voltage when operating by a commercial power supply having the first drive unit 16 is in a disable state, the first LED portion 11 and the current through the second LED unit 12 may be controlled by a second drive unit (17). At this time, the total light output from a first LED unit 11 and second LED unit 12 is determined only by said second drive unit (17).
225The first LED unit 11, a first upstream end and a second LED unit switches between the second upstream end (12) portion (18) and to connect the first downstream stage agent of the first LED unit 11 2 prevents reverse flow through the upstream end of the second LED unit 12, unit 19 may be connected. The switch unit 18 is switched to the on / off state in accordance with the logic value of the control voltage (Vcon). When the switch unit 18 is on-state, the power supply unit to flow dobby 10, the current is 1 second LED unit 11 and the output from the 2 LED unit 12. That is, the first part 1 LED 11 and the LED unit 2 12 is parallel connected to each other. Thus when compared in the switching unit 18 is turned off, and the LED 1 and the second part (11) 2 LED unit 12 is to be connected to each other in series, no current flows through the switch unit 18.
226Figure 18a is a first voltage (ex: 120V) shows a connection whether or not the operation and the circuit configuration of the LED lighting device 700 in the case of operation by the commercial power supply having a. Voltage is the first voltage (ex: 120V) of the power unit 10, as shown in Figure 18a when the work, the peak detector 14 is 120 * outputs a voltage peak value of 1.414 (= √2), and the voltage comparator (15) is to output a value of a section corresponding to a logical low to the control voltage (Vcon) (Vcon => low). Control voltage (Vcon => Low) value of the voltage comparator 15 is input to the first driving unit 16, the second driving unit 17, and a switch unit (18). Accordingly, the first driving unit 16 is maintained the on (ON) state, and have a first internal circuit configuration of the second driving unit (17). Since the switch section 18 is also to maintain an on (ON) state. That is, when the control voltage (Vcon) has a value corresponding to the Low forms a current path through the switch section 18 between the first end and upstream said second upstream end. In addition, since the diode preventing a reverse flow of current, the first upstream of the LED (11) of claim 2 LED unit 12, the downstream end of the stage is to be short-circuited from one another, a first drive (16) of the backflow preventing part 19 a second driving unit 17 are connected to one another have a configuration in which parallel.
227The first voltage (ex: 120V) when operated by a commercial power supply having a first drive unit 16 is to control the value of current flowing through the first LED (11). For example, the first driving unit 16 may first LED unit 11 is controlled to have an output of 10W. In addition, the second driving unit 17 is to control the value of current flowing through the second LED unit 12. For example, the second driving unit 17 may be the second LED unit 12 to have control of the output of 10W. The second drive unit (17) for this purpose shall be operated by the above-mentioned first configuration. Thereby, first drive 16 and second drive unit 17 together, and the first LED unit (11), second LED unit 12 can be controlled so as to have a total output of 20W.
228Figure 18b is a second voltage (ex: 277V) shows a connection whether or not the operation and the circuit configuration of the LED lighting device 700 in the case of operation by the commercial power supply having a. Voltage is the second voltage (ex: 277V) of the power unit 10, as shown in Figure 18b when the work, the peak detector 14 is 277 * outputs a voltage peak value of 1.414 (= √2), and the voltage comparator (15) is to output a value corresponding to a logical high (Vcon => high). Control voltage (Vcon => High) value of the voltage comparator 15 is input to the first driving unit 16, the second driving unit 17, and a switch unit (18). Accordingly, the first driving unit 16 is turned off (OFF) state is, the second driving unit 17 is turned on (ON) state to maintain, and the second driving unit 17 of the internal circuit of claim 2 configured to have the . And the switch portion 18 remains off (OFF). That is, the control voltage (Vcon) in this case has a value in the interval corresponding to the High said first upstream end and a current path between said second upstream end is cut off. Thus Claim 1 LED unit 11 and the 2 LED unit 12 will have a configuration that is connected in series with each other.
229At this time, the second driving unit 17 is to control the value of current flowing in claim 1 LED unit 11 and second LED unit 12. That is, the second driving unit 17 can be controlled to have the claim 1 LED unit 11 and second LED unit 12, the output of the total of 20W. For this, the second driving unit 17 shall operate in the above-described second configuration.
230The above-mentioned first configuration and the second configuration may be described later means a sense resistor (Rs2), and configuration having a configuration and a second value is the equivalent resistance of the sensing resistor (Rs3) having a first value.
231The LED lighting apparatus can be variously configured according to the series and parallel states of the LED (11, 12).
232<u>Example 12</u>
233Figure 19a and Figure 19b shows an example applied to a lighting apparatus of Figure 1 as a LED driving part and the one presented in Fig. Fig first LED unit of 19a (31), the first driving unit 32 will showing in more detail an embodiment of an internal structure of the first LED unit 11 and the first driving unit 16 of each 17, 19b the second LED unit 33 of the second drive unit 34 is shown in more detail an embodiment of an internal structure of the second driving unit 17, each 17 second LED unit 12, the.
234Figs. 19a is a view of the claim 1 LED unit 31 is a circuit luminescent groups sequentially light up from the upstream end to a downstream end that is a member of the in accordance with the voltage rise of the voltage unit according to the twelfth embodiment 10 of the present invention will. Figure 19b is a view of the claim 12, claim 2 LED unit 33, serving the light emitting group are sequentially light up from the upstream end to the downstream end circuit in accordance with the voltage rise of the voltage unit 10 in accordance with an embodiment of the present invention will.
235The first voltage (ex: 120V) when operated by a commercial power supply having a first drive control voltage has a value in the interval corresponding to Low as 32 (Vcon) is input since the first driving unit 32 is turned on (ON) to the state. At this time, it is possible to connect between the upstream end of the second switch section 18 (not shown) is first LED unit 31, a first upstream end and a second LED unit 33 of the 17 described in Fig. And therefore it receives the control voltage (Vcon) has a value in the interval corresponding to the switch portion Low form a current path to pass through the switch between the first upstream end and the second upstream end, a first LED unit 31, 2 and the LED unit 33 will have a configuration that is connected in parallel with each other. As the voltage rise of the voltage unit 10, the 1 LED unit 31 and the 2 LED unit light-emitting group is a light emitting group of the same number (CH1) is said on, at the same time, and then the light-emitting group in sequence of 33 ( CH2 ~ CH4) becomes turned on. That is, the light emitting group (CH2) of claim 1 LED 31 of the light emitting group (CH1) and the 2 LED unit 33 of the light emitting group (CH1) turns on to, the next claim 1 LED unit 31 at the same time light emitting group (CH2) 2 of the LED unit 33 is turned on at the same time. The light emitting part 1 LED group (CH3, CH4) of 31 and the 2 LED unit 33 can be turned in the same way.
236The second voltage (ex: 277V) when operated by a commercial power supply having a first drive control voltage has a value in the interval corresponding to High to 32 (Vcon) is input since the first driving unit 32 is turned off (OFF) to the state. In the case where the switch portion (not shown) may be connected between the second upstream end of the first LED unit 31, a first upstream end and a second LED unit 33 of the. However, receiving the control voltage (Vcon) has a value in the interval corresponding to the switch portion High and interrupt the current path to pass through the switch between the first upstream end and the second upstream end, a first LED unit 31, 2 and the LED unit 33 will have a configuration that is connected in series. As the voltage rise of the voltage unit 10, the 1 LED 31 of the light emitting group (CH1 ~ CH4) light emitting group (CH1 ~ CH4 of then claim 2 LED unit 33 on and at the same time at a time at some point ) it is turned on sequentially.
237Looking specifically to the Figure 19b, the value of the second current through the second LED unit 33 is controlled by the second drive unit (34), specifically is included in the second drive unit 34, It is controlled by the sense resistor value. The sensing resistor is, for example, may refer to the illustrated and Rs2 in the second drive unit consisting of an equivalent resistance Rs3. At this time, the value of the equivalent resistance may be determined in the same way as follows. Vcon has a first value input voltage (ex: 120V) in the case having: has a value in the interval, the input voltage is the second value corresponding to the (277V ex) when having the first logic value (Low ex) It may have a value in the interval corresponding to: the second logic value (High ex). Because it looks as if there is not a sense resistor (Rs3) present in the second driving unit if Vcon has a value in the interval corresponding to the first logic value (Low) formed by the two sensing resistors (Rs2, Rs3) equivalent this resistance will have a first value (= Rs2). And Vcon this case has a value in the interval corresponding to the second logic value (High) the sense resistor (Rs2) and the sensing resistor (Rs3) is the equivalent resistance connected in parallel with each other because the second value (= Rs2 // It will have a Rs3).
238A first drive (32) of the sense resistor (Rs1), and the second driving unit 34 of the sensing resistor (Rs2) and sensing resistance by properly selecting the value of (Rs3), the input voltage is a first value (ex: 120V) agent for the LED lighting device 700 of when it has the first chonggwang output value and the input voltage a second value (ex: 277V) to control the second chonggwang output values of the LED lighting device 700 of the time have a have. Preferably may adjust the first and the second output chonggwang chonggwang output is the same.
239Another embodiment of the present invention can be provided by combining the circuits shown in Fig. 17 of the circuit 3 or 4.
240That is, it is possible to configure the first circuit the first LED unit 11 in FIG. 17 by using the device consisting of the first one shown in Fig. 3 or Fig. 4 (CHx, Dx, Rx, BSx, Vpx). And it may constitute a second circuit a first drive (16) of Figure 17 using the second one consisting of elements (CSx, Vx, Rs) shown in Fig. 3 or 4.
241In addition, it is possible to configure the 2 LED unit 12 of Figure 17 using a first circuit section consisting of the first elements (CHx, Dx, Rx, BSx, Vpx) shown in Fig. 3 or 4. And it may use a second circuit consisting of the second elements (CSx, Vx, Rs) shown in Fig. 3 or 4 to configure the second driving unit 17 of Fig. At this time, in order to provide a second drive section (17), a sensing resistance of the other second to the sensing resistor (Rs) constituting the second circuit it may have to be connected in parallel. At this time, the connection of the sensing resistance is different from the first to the sensing resistor (Rs) can be configured as shown in Fig. 19b.
242Yet another embodiment of the present invention can be provided by combining the circuits shown in Fig. 12 (a), the circuit of Fig.
243That is, it is possible to configure the first LED unit 11 in Fig using a first circuit section consisting of the first functional units (20, 904, 30) shown in FIG. 12 (a) 17. And may constitute a second circuit a first drive (16) of Figure 17 using a second function consisting of a part 40 shown in FIG. 12 (a). In this case, the second functional unit 40 can be connected has a sensing resistance (Rs1) described in Fig. 19a.
244In addition, it is possible to configure the 2 LED unit 12 in Fig using a first circuit section consisting of the first functional units (20, 904, 30) shown in FIG. 12 (a) 17. And it may constitute a second circuit second driving unit 17 of Figure 17 using a second function consisting of a part 40 shown in FIG. 12 (a). In this case, the second functional unit 40 can be connected has a sensing resistors (Rs2, Rs3) described in Fig. 19b.
245Yet another embodiment of the present invention can be provided by combining the circuits shown in Figure 13 the circuit of Fig.
246That is, it is possible to configure the first circuit the first LED unit 11 in FIG. 17 by using the first element consisting of the (CHx, Dx, Rx, Cx) shown in Fig. And it may constitute a second circuit a first drive (16) of Figure 17 using the second one consisting of elements (CSx, Vx, Rs) shown in Fig.
247In addition, it is possible to configure the first circuit of claim 2 LED unit 12 in FIG. 17 by using the first element consisting of the (CHx, Dx, Rx, Cx) shown in Fig. And it may constitute a second circuit second driving unit 17 of Figure 17 using the second one consisting of elements (CSx, Vx, Rs) shown in Fig. At this time, in order to provide a second drive section (17), a sensing resistance of the other second to the sensing resistor (Rs) constituting the second circuit it may have to be connected in parallel. At this time, the connection of the sensing resistance is different from the first to the sensing resistor (Rs) can be configured as shown in Fig. 19b.
248Yet another embodiment of the present invention can be provided by combining the circuits shown in Figure 16 the circuit of Fig.
249That is, it is possible to configure the first circuit the first LED unit 11 in FIG. 17 by using the first element consisting of the (CHx, Dx, Rx, Cx, BSx, Vpx) shown in Figure 16. And it may constitute a second circuit a first drive (16) of Figure 17 using a second element consisting of (CSx, Vx, Rs) shown in Figure 16.
250In addition, it is possible to configure the first circuit of claim 2 LED unit 12 in FIG. 17 by using the first element consisting of the (CHx, Dx, Rx, Cx, BSx, Vpx) shown in Figure 16. And it may constitute a second circuit second driving unit 17 of Figure 17 using the second one consisting of elements (CSx, Vx, Rs) shown in Fig. At this time, in order to provide a second drive section (17), a sensing resistance of the other second to the sensing resistor (Rs) constituting the second circuit it may have to be connected in parallel. At this time, the connection of the sensing resistance is different from the first to the sensing resistor (Rs) can be configured as shown in Fig. 19b.
251Using embodiments of the present invention described above, characters belonging to the technical field of the present invention will be easily carried out within a wide range of changes and modifications without departing from essential characteristics of the invention. The contents of each claim of the patent claims may be coupled to another without the cited relation in the range that can be understood through the claims herein.
26 sheets
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Every citation, both ways
| Document | Relation | Office | Category | Cited during | Relevant claims |
|---|---|---|---|---|---|
| KR20120026949A | Cites | Republic of Korea | Y | International search | 1-26 |
| KR20120078999A | Cites | Republic of Korea | Y | International search | 1-26 |
| KR910009243Y1 | Cites | Republic of Korea | Y | International search | 3, 4, 6, 9, 10, 12, 13 , 18, 19, 21, 24, 26 |
35 members in 5 offices; this record represents the family
Members35
| Document | Office | Kind | |
|---|---|---|---|
| US2015341997A1 | United States of America | A1 | |
| WO2015178564A1This record | World Intellectual Property Organization (WIPO) | A1 | |
| WO2015178565A1 | World Intellectual Property Organization (WIPO) | A1 | |
| KR20150134250A | Republic of Korea | A | |
| KR20150134251A | Republic of Korea | A | |
| KR20150134293A | Republic of Korea | A | |
| KR20150134297A | Republic of Korea | A | |
| US2016205734A1 | United States of America | A1 | |
| US9414453B2 | United States of America | B2 | |
| US2016309560A1 | United States of America | A1 | |
| US9572212B2 | United States of America | B2 | |
| CN106489304A | China | A | |
| CN106538065A | China | A | |
| EP3148295A1 | European Patent Office (EPO) | A1 | |
| EP3148296A1 | European Patent Office (EPO) | A1 | |
| US2017099707A1 | United States of America | A1 | |
| US9781791B2 | United States of America | B2 | |
| US9788377B2 | United States of America | B2 | |
| US2017354001A1 | United States of America | A1 | |
| EP3148295A4 | European Patent Office (EPO) | A4 | |
| EP3148296A4 | European Patent Office (EPO) | A4 | |
| US2017359873A1 | United States of America | A1 | |
| US9924572B2 | United States of America | B2 | |
| KR101825213B1 | Republic of Korea | B1 | |
| US2018153011A1 | United States of America | A1 | |
| US10015852B2 | United States of America | B2 | |
| US10015853B2 | United States of America | B2 | |
| US2018279427A1 | United States of America | A1 | |
| US2018279433A1 | United States of America | A1 | |
| US10165637B2 | United States of America | B2 | |
| US2019132913A1 | United States of America | A1 | |
| US10405387B2 | United States of America | B2 | |
| CN106489304B | China | B | |
| CN106538065B | China | B | |
| US10638582B2 | United States of America | B2 |
Numbers
- Publication
- 2015/178564
- Application
- 315
Titles5
- English
- LED ILLUMINATION DEVICE USING AC POWER
- French
- DISPOSITIF D'ÉCLAIRAGE À DIODES ÉLECTROLUMINESCENTES UTILISANT UNE ALIMENTATION EN COURANT ALTERNATIF
- Korean
- 교류전원을 이용하는 LED 조명장치
- Unlabeled
- 교류전원을 이용하는 LED 조명장치
- Korean
- LED lighting devices using an AC power supply
Classification
- CPC, 4
- H05B45/00
- H05B47/10
- H05B45/10
- H05B45/48
- IPC, 2
- H05B37 02
- H05B44 00
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