Led lamp bulb and led lighting bar capable of emitting light over 4 pi

Background of the invention

In the prior art, an LED light bulb replacing a conventional light bulb usually consists of one or more high-power LEDs, a metal plate (MPCB), a heat sink having a series of heat dissipating fins, a controller containing a pulsed power supply system and DC equipment, an element junction box, anti-glare bulb cover and electrical connector. The light efficiency of such bulbs has already caught up with the efficiency of commonly used energy-saving fluorescent bulbs. The total light efficiency of energy-saving fluorescent bulbs is 40 to 70 lm / W, but the light efficiency of a white LED light emitting diode reaches 130 lm / W. There is a need, therefore, to increase the light efficiency of LED light bulbs. The main problem associated with currently available LED light bulbs are too high manufacturing costs and sales prices, which are several times greater than those of energy-saving fluorescent light bulbs providing the same luminous flux, which makes it difficult to popularize LED electroluminescent bulbs. The factor causing high costs is not the LED electroluminescent element itself, but the high price of the heat sink made of aluminum alloy, the controller including a pulsed power supply system containing a transformer and a DC device, as well as the housing of the LED electroluminescent bulb. Such a controller is not only expensive, but also has low efficiency. Said controller also contains elements such as a triode, transformer and electrolytic capacitor, which have a short shelf life, which is not even comparable with the shelf life of the LED light emitting diode. The average rated lifetime of these components is usually less than 25,000 hours, while the lifetime of the light emitting diode itself should be up to 50,000-100,000 hours. Thus, in the prior art electroluminescent bulbs intended to replace conventional incandescent bulbs therefore have relatively low overall light efficiency, are too expensive and have a not very long shelf life. If you are going to replace conventional and commonly used energy-saving fluorescent bulbs with LED light bulbs and you intend to make them the main source of lighting, you need to further increase their efficiency, significantly reduce costs, increase service life and they should have essentially the same weight and volume as the bulbs conventional.

The light emitted by LEDs comes from the PN connector of the LED. The PN junction itself emits light in an angular range of 4π. In order to focus the light or provide a connection with a metal heatsink, in the prior art a reflective layer, reflective dish or heat sink is placed on one side of the PN connector of the LED light emitting diode, so that the original angular range of light emission of 4π is reduced to 2π or less than 2π. Light rays emitted in the angular range of 2π directed towards the radiator leave it after a single reflection, multiple reflections and subjected to different types of absorption, while some of the light rays emitted in the angular range of 2π directed towards the light emitting surfaces also leave it after a single reflection, repeated reflections and exposure to various types of absorption, because this part of the light rays emitted in the angular range of 2π is directed towards the heat sink, which causes a large reduction in the amount of light emitted by the PN connector, and thus a reduction in the efficiency of the LED light emitting diode. At present, the internal quantum light efficiency of the PN connector of the LED light emitting diode is already close to 90%, while its external quantum light efficiency is only about 30%. The term "internal quantum efficiency is 90%" means that in PN junctions only 10% of the introduced electrons are discharged without generating a photon, while each of the 90% of the introduced electrons generates a photon. One important reason that "external quantum efficiency is only about 30%" is that the PN junction that initially emits light in the 4π angle range becomes the light emitting element in the 2π angle range. The ability for the PN connector to emit a light-emitting diode LED in an angular range of 4π would significantly increase the light efficiency of the LED light-emitting diode.

Research on this issue has already been carried out. For example, Chinese Patent No. 200510089384.X describes a single LED electroluminescent element suspended in a light-permeable substance, which allows the element to emit light in an angular range of 4π. However, this does not provide the problem of heat dissipation generated by the element. The element is suspended without using a support plate, and therefore power supply to the element does not show great reliability. It is therefore possible to use only a single element with low power, and reliable light production with sufficient luminous flux is difficult. US Patent Application Publication No. 2007/0139949 uses a number of small components mounted in series on an expensive transparent heat-conducting substrate, e.g., sapphire, diamond or gallium nitride, or on a translucent heat-conducting substrate, e.g., copper or made of silicon carbide. Then, a conventional LED light bulb is manufactured in the shape of a conventional light bulb, which is made by connecting the above-described substrate with the bulb head by thermally connecting the power cords and bracket to ensure heat dissipation and installing an outside light bulb cover that is not vacuum closed but is filled air, and its interior is connected to the surrounding atmosphere. As described in the above US patent application, said heat conducting substrate, e.g. sapphire or diamond substrate, is very expensive and not practical, and since copper, silicon carbide and similar materials are not transparent, it is impossible to achieve light emission in the angular range of 4π. The heat dissipation path for this type of bulb is as follows: element heat conducting surface heat conducting power supply wire heat conducting bracket bulb head. The heat dissipation path ends at the head of the bulb, which makes creating a thermal connection difficult and the heat dissipation is limited. If the bulb head has an LED driver, it interrupts the heat dissipation path and causes it to not function. Under these conditions, vacuum closure of the bulb also interrupts the heat dissipation path. It is therefore difficult in practice to produce lighting that provides sufficient luminous flux.

In the state of the art, most LED light bulbs use high power LEDs that operate at low voltage and high current. Each LED electroluminescent element has one PN connector, its operating current is 0.35 A, and even several amperes, while the electrical power of 1 W to several watts and more is concentrated in the area of ​​the element with an area of ​​one to several square millimeters. Because its external quantum efficiency is only about 30%, apart from the difference between the energies of the introduced electron and the photon produced by this electron, as well as the difference between the energies of the photon generated by the PN junction and the photon emitted at the end of the photon, about 70% of electricity is converted into heat. The method of dissipating such a large amount of heat has always been a critical problem associated with this type of high power LEDs since their first appearance. The LED light emitting diode is a semiconductor device, so the increase in temperature of PN connectors causes a rapid decrease in light efficiency and even burning of PN connectors. To date, heat dissipation is one of the critical problems associated with this type of LED electroluminescent lighting operating using low voltage and high current, including LED electroluminescent bulbs.

In order to solve the problems of heat dissipation, in the electroluminescent LED bulbs known from the state of the art, the most commonly used is a metal passive radiator having heat dissipating ribs. The materials and shapes used to make such a heat sink as well as the method of increasing convective heat exchange with air have been investigated and described in patents, for example in Chinese Patent Nos. 200510062323.4 and US Patent Nos. 6787999 and 7144135. Such a metal heat sink is usually made of aluminum alloy and has a large volume, high weight and high price. This is one of the critical factors affecting the high price of LED light bulbs known in the art.

Instead of the metal heatsink described above, the possibility of using heat dissipating liquids has also been explored, as described, for example, in Chinese Patent Nos. 200810093378.5, 200910100681.8 and 200910101643.4. The LED light emitting diode was placed in a tightly sealed bulb cover filled with a heat conducting liquid that allows light to pass through, which can be, for example, water, oil, glycol or other inert liquid. On the one hand, the liquid has a much lower thermal conductivity than metal. For example, the coefficient of thermal conductivity of water is about 0.7 W / (m ^ K), while the coefficient of thermal conductivity of metal is from 50 to 415 W / (nrK). The coefficient of thermal conductivity of aluminum alloy, which is commonly used to manufacture heat sinks of LED electroluminescent bulbs, is from 96 to 226 W / (nrK). From the above, it can be seen that the liquid has a much lower thermal conductivity than the metal. On the other hand, since the viscosity coefficient of the liquid is very high, for example water has a viscosity of 8937 μΡ, it is difficult to get convection in it. Given the above information, the effects of using liquids to conduct heat and convective heat dissipation are poor. The use of liquids for heat dissipation also causes problems associated with electrochemical analysis of liquids, liquid erosion to LEDs, failure of heat dissipation, liquid pollution caused by a broken bulb cover, high weight, and even explosions caused by the accumulation of a gas phase layer at the surface of the LED , which is mainly associated with the transition of liquids into a gas phase. The practical use and dissemination of this technology is therefore not easy.

The possibility of using gas to dissipate heat instead of the above-described metal (solid state) and liquid has already been explored. For example, in an LED light bulb according to Chinese Patent No. 201010176451.2, nitrogen anions sealed in a light bulb cover are used for heat dissipation. For example, in the LED electroluminescent bulb described in Chinese Patent No. 200910250434.6, a mixture of gaseous nitrogen and argon gas sealed in a light bulb cover is used for heat dissipation. To date, these methods are practically not used. In addition to the mentioned LED light bulbs, heat dissipation using the high thermal conductivity of the gas (such as helium or a mixture of helium gas with H2 hydrogen) can be used in other types of lamps (e.g. cold cathode fluorescent lamps), as described, for example, in Chinese Patent No. 200710148853.X. However, it is difficult to achieve limited convection, which reduces the effects of heat conduction and dissipation because the cold cathode fluorescent lamp has a large volume and occupies almost the entire bulb cover. Therefore, this technology is currently practically not used. Filling the bulb cover with a gas such as nitrogen and / or hydrogen is also used, for example, in metal halide lamps, as described in Chinese Patent No. 200580039670.3. Conventional bulbs can also be filled with a gas such as nitrogen and / or hydrogen. However, these lamps differ from LED electroluminescent lighting.

In addition to the above heat dissipation problem, prior art LED light bulbs also have control problems that relate to the conversion of high voltage electricity available in commercial networks into low voltage electricity and high current. As described above, most LED light bulbs known in the art are in the form of high power LEDs that operate using low voltage and high current. Their operating voltages are in the range of several volts to tens of volts, while the currents are in the range of 0.35 A to several amps. Conventional light bulbs and energy-saving fluorescent bulbs currently used use direct current available in commercial networks from 110 230 V AC source. If you want to replace them directly, you must therefore use a controller containing an AC / DC converter to convert high voltage AC energy into energy low voltage and high current. Such a controller usually includes a pulsed power supply with components such as triodes, transformers and electrolytic capacitors, and a DC circuit. Since the volume of LED lighting to replace incandescent lighting is not too large, the volume of the controller and transformers should be as small as possible, while the difference between the input voltage and the output voltage is very large, which results in low efficiency of electricity conversion, which is usually from 70 % to 80%. This reduces the light efficiency of all lighting. Thus, because the efficiency is low, large amounts of heat are generated. Considering the heat generated by the controller described above and the heat generated by the LED light emitting diode, the temperature of the controller easily increases, which not only further reduces the efficiency of the controller, but also reduces the lifetime of the controller. The controller contains components such as triodes, transformers and electrolytic capacitors that are temperature sensitive. An increase in temperature significantly reduces their efficiency, shelf life and reliability. This means that the lifetime of the LED light bulbs known in the art is not primarily dependent on the LED light emitting diode but on the controller. In addition, the controller containing a pulsed power supply with a transformer and a DC circuit is a complex system, and the requirements for its components, and therefore also their costs, are large, which is another critical factor causing high prices of LED light bulbs known in the art.

To eliminate this driver, a technology called ACLED (AC LEDs using alternating currents) was developed, examples of which can be found, for example, in Chinese Patents Nos. 200510020493.6 and 200610099185.1, in US Patent Nos. 751248 and 7535028, as well as in product AX3221. A number of LED electroluminescent elements are connected in series in a similar way to the rectifier bridge used in the circuit, mounted on a metal plate (MPCB) and equipped with a heat sink. They can operate using direct current available in commercial networks, and the driver used in their case is relatively simple. However, such LEDs currently have relatively low efficiency and must be thermally connected to a metal heat sink, which must be exposed and come into contact with air. Because ACLED diodes are supplied with high voltage AC energy, the metal heat sink is easily charged and is therefore not safe. The same safety issues also occur with the prior art HVLED technology (high voltage LEDs), as described, for example, in Chinese Patent No. 201020159200.9.

In addition, the LED is a kind of point light source, where about 100 lm of light is focused on an area of ​​about 1 mm²and thus the light intensity reaches tens of millions of rivets. If a person directs their eyes directly to a light source, they can be blinded, leaving a shadow in the field of view, and therefore their eyesight is severely impaired for some time. Home lighting should therefore be equipped with light bulb covers to prevent glare or other light diffusing devices. In order to obtain a pleasant light, the light diffusing layer or the anti-dazzle bulb cover should be of sufficient thickness, which also reduces the efficiency of light transmission through the light bulb cover. It usually causes about 15% of light to be lost. This in turn reduces the light efficiency of all lighting.

Considering the above, in the case of intending to replace conventional and energy-saving fluorescent bulbs commonly used in lighting LED electroluminescent bulbs known from the state of the art, it is necessary to further increase the light efficiency of LED electroluminescent lighting, significantly reduce costs, increase shelf life and ensure, that it has essentially the same weight and volume as conventional light bulbs.

Summary of the Invention

In view of the above limitations of the prior art solutions, the object of the present invention is to eliminate at least one aspect of the above problems and disadvantages.

Accordingly, one of the objectives of the present invention is to provide an LED light emitting strip enabling light to be emitted with high efficiency in the 4π angle range.

One of the objectives of the present invention is to provide a high-efficiency LED light bulb with light-emitting LED elements with high efficiency in the 4π angle range.

Another object of the present invention is to provide a low cost, high efficiency LED light bulb with LED light emitting elements in the 4π angle range.

Another object of the present invention is to provide an electroluminescent bulb

Long-life LED with LED electroluminescent elements emitting light in the angular range of 4π.

Still another object of the present invention is to provide a high efficiency LED light bulb with LED light emitting elements in the 4π angle range that has a volume and weight similar to those found in a conventional light bulb.

In accordance with one aspect of the present invention, an LED electroluminescent light bulb is provided comprising: an LED electroluminescent light bulb cover; main column with outlet pipe and bracket; at least one LED light-emitting strip with LED light-emitting elements in the 4π angle range; controller; and an electrical connector, wherein the cover of the electroluminescent bulb is vacuum-sealed together with the main column to form a vacuum-sealed chamber that is filled with gas having a low viscosity coefficient and high thermal conductivity, while the bracket and the electroluminescent strip emitting LED light attached to the bracket are in a vacuum-sealed chamber, and the electroluminescent strip emitting LED light is electrically connected to the controller, and the electrical connector is used to obtain an electrical connection with an external power source, which ensures the lighting of electroluminescent strips emitting LED light.

In accordance with another aspect of the present invention, an LED light emitting strip is provided with LED light emitting elements in an angular range of 4π, wherein the LED light emitting strip contains a transparent substrate and at least one series of LED electroluminescent elements arranged on a transparent substrate and connected in series in in such a way that the PN joints extend in the same direction, LED electroluminescent elements have transparent substrates, LED electrodes are led using LED electroluminescent electrode feeding device located at both ends of the transparent substrate, and the transparent substrate is made of soft glass, hard glass, quartz glass, transparent ceramic material or plastic plastic.

In accordance with another aspect of the present invention, an LED light emitting strip is provided with electroluminescent light emitting elements in an angular range of 4π, wherein the LED light emitting strip comprises a transparent substrate and at least one series of LED electroluminescent elements disposed on a transparent substrate and connected in series in such the way the PN connectors extend in the same direction, LED electroluminescent elements have transparent bases of elements, electrodes of LED electroluminescent elements are routed with the use of LED electrode feeding device located at two ends of the transparent substrate, where some of the LED electroluminescent elements are LED electroluminescent elements emitting blue light, the remaining part of the LED electroluminescent elements are LED electroluminescent elements emitting red light, while around the LED electroluminescent elements and a transparent substrate on which LED electroluminescent elements are mounted there is a layer of phosphor luminescent powder designed to transform a part of the blue light emitted by LED electroluminescent elements into yellow light, and the remainder of the blue light is mixed with yellow and red light to obtain white light, where white light has a high color rendering index or light of a different color.

In accordance with another aspect of the present invention, an LED light emitting strip is provided with LED light emitting elements in an angular range of 4π, wherein the LED light emitting strip contains a transparent substrate and at least one series of LED electroluminescent elements arranged on a transparent substrate and connected in series in in such a way that the PN joints extend in the same direction, LED electroluminescent elements have transparent substrates, LED electrodes are led with the use of LED electroluminescent electrode feeding device located at two ends of the transparent substrate, and on the outside of the LED electroluminescent elements and the transparent substrate is a surrounding tube or tube made of transparent phosphorus luminescent powder.

In accordance with another aspect of the present invention, an LED light emitting strip is provided with LED light emitting elements in an angular range of 4π, wherein the LED light emitting strip contains a transparent substrate and at least one series of LED electroluminescent elements arranged on a transparent substrate and connected in series in in such a way that the PN joints extend in the same direction, LED electroluminescent elements have transparent substrates, LED electrodes are led using LED electroluminescent electrodes feeding device located at two ends of the transparent substrate, where LED electroluminescent elements are in the form of transparent high-voltage LED electroluminescent elements, each containing at least two PN connectors connected in series.

High efficiency LED light bulb with light emitting elements in the 4π angle range according to the present invention includes a light transmitting bulb cover, main column with outlet tube, power supply and bracket, at least one LED light emitting strip with LED light emitting elements in the 4π angle range, controller, electrical connector, the light bulb cover and connecting element to be connected to the electrical connector, the light transmitting light bulb cover and the main column are vacuum-sealed to form a vacuum-sealed chamber that is filled with gas having a low viscosity index and a high thermal conductivity index; where the lamp cover, LED light-emitting strip, controller, electrical connector and connecting element are connected to form the entire lamp; while the LED light emitting strip is attached to the main column, the LED light emitting electrodes are connected to the controller and the electrical connector via the main column power supply, and finally connected to an external power source to turn on the external power source, i.e. light LED light emitting strip.

It follows from the above that in the present embodiment, the light-transmitting LED electroluminescent bulb is vacuum-sealed with the main column, thanks to which it houses a suitable bracket and an electroluminescent strip emitting LED light inside. In addition, the controller and the electrical connector are located outside the vacuum-sealed chamber.

The vacuum-sealed chamber formed by the light-permeable bulb cover and main column is filled with gas having a low viscosity coefficient and a high thermal conductivity coefficient, for example helium (He), hydrogen (H2) or a mixture of helium gas and hydrogen. At room temperature, the gas pressure is between 50 and 1520 torr. It is known that each of the static gases is a good thermal insulator, while the heat dissipation of gas depends mainly on convection. It is therefore necessary to choose a gas with a low viscosity index. As for gases, helium has the lowest viscosity coefficient, which is only 116 μΡ (hydrogen viscosity coefficient is 173 μΡ, air viscosity coefficient is 922 μΡ, and water viscosity coefficient is 8937 μΡ), thanks to which it is possible to easily obtain high convection ensuring heat dissipation. On the other hand, the electroluminescent strip emitting LED light has a small volume, and effective convection of gas is easier, which allows efficient removal of heat generated during the operation of the electroluminescent strip emitting LED light by convection and heat conduction through the gas and bulb cover. The LED light-emitting strip is further protected by an inert gas such as helium or another gas having a low viscosity index and vacuum-sealed. Because the LED light emitting strip is not affected by the surrounding water vapor and similar substances, a long shelf life of the LED light emitting strip and its LED electroluminescent components is provided.

An LED light emitting strip with LED electroluminescent elements emitting light in the angular range of 4π has a transparent substrate and at least one series of LED electroluminescent elements placed on a transparent substrate and connected in series in such a way that the PN connectors extend in the same direction. LED electroluminescent elements have transparent component bases and are mounted on a transparent base using a transparent adhesive such as silicone adhesive, modified resin, epoxy resin or similar material. LED electroluminescent elements emit light in the 4π angle range and have high luminous efficiency. LED electrodes are powered by means of power supply connections located at two ends of the transparent substrate.

The transparent substrate of the LED light-emitting strip is made of soft glass, hard glass, quartz glass, transparent ceramic material, plastic or similar material. The power leads located at the two ends of the LED light-emitting strip are attached at both ends of the transparent substrate using high temperature glue, plastic, silver mass or easily fusible glass.

At least one series of LED electroluminescent elements is mounted on a transparent substrate in a manner independent of other elements. Individual elements can be arranged next to each other or they can be separated from each other by some distance. For example, the distance between the elements may be greater than 0.01 mm. The heat generated during the operation of LEDs is dissipated by dissipation and can be easily dissipated. The LED light-emitting diode shows a slight increase in temperature and has a long shelf life. Since the light emitted by the LED light emitting diode is diffused, the phenomenon of glare by the LED light emitting diode is reduced. The electroluminescent elements mounted on a transparent base connected in series can be in the form of LED electroluminescent elements with the same or different lighting colors, for example emitting identical blue light, ultraviolet light or other monochrome light. Elements can also emit light in three RGB basic colors (red-green-blue) or many basic colors, which aims to obtain white light or mixed light of a different color. If you choose different numbers of LEDs with many colors of light, it is possible to obtain white light with a high color rendering index.

A transparent dielectric layer with high light transmittance and high refractive index, such as silicone adhesive, plastic or epoxy resin, can be placed on the surface of the transparent LED light-emitting strip substrate, with the elements being in the layer and the layer on the elements, which ensures an increase in overall light efficiency and protection of LED electroluminescent elements and their electrical connection cables.

In the case of using LED electroluminescent elements emitting blue or ultraviolet light and the need to use phosphor luminescent powder transforming them into white light or light of a different color, it is also necessary to apply a homogeneous layer of phosphor luminescent powder located on the outside of the light-emitting strip and its components .

Phosphor luminescent powder can be applied to external surfaces around a transparent substrate and components.

A layer of phosphor luminescent powder can be applied to the outer surface around the transparent substrate of the light-emitting strip and its surface in which the elements are mounted, as well as to the transparent dielectric layer located on the elements.

A transparent dielectric layer can first be applied around the transparent substrate of the light emitting strip and components, after which a uniform layer of phosphor luminescent powder is applied.

A uniform layer of phosphor luminescent powder can first be applied around the transparent substrate of the light-emitting strip and components, after which a transparent dielectric layer is applied.

The phosphor luminescent powder layer is made by mixing phosphor luminescent powder with a transparent insulator, which is characterized by high light transmission, high refractive index and high thermal conductivity, which can be, for example, silicone adhesive, epoxy resin, plastic, transparent adhesive. transparent varnish, organic high-molecular material or similar material.

Phosphor luminescent powder and transparent insulator are first mixed to obtain a homogeneous luminescent film, which is then wrapped around a transparent substrate and a transparent dielectric layer on the elements.

The phosphor luminescent powder layer obtained by mixing together the phosphor luminescent powder with a transparent insulator can also be formed in the form of a transparent dielectric tube containing phosphor luminescent powder. A tube containing phosphorus luminescent powder can be placed outside the transparent substrate and electroluminescent elements. The transparent insulator may be in the form of, for example, silicone adhesive, epoxy resin, plastic, glass or similar material.

Phosphor luminescent powder can also be applied to the inner or outer wall of a glass tube, which provides a glass tube containing phosphor luminescent powder. Inside the glass tube containing the phosphor luminescent powder can then be placed a transparent substrate on which at least one series of LED electroluminescent elements is mounted.

Between a transparent dielectric tube containing phosphorus luminescent powder or a glass tube containing phosphorus luminescent powder and LED electroluminescent elements and a transparent substrate, an insulator with high light transmittance, high refractive index and high thermal conductivity can be introduced, which can be in the form of, for example, silicone adhesive epoxy resin, plastic or similar material. The two ends of the above-mentioned transparent dielectric tube containing phosphorus luminescent powder or the glass tube containing phosphorus luminescent powder can be immobilized or closed using the power feeds provided at both ends of the transparent substrate.

Phosphor luminescent powder can also be applied to the inside wall of the transparent bulb cover.

An LED light emitting strip with LED light emitting elements in the 4π angle range has at least one series of LED electroluminescent elements, which may be in the form of high voltage LED electroluminescent elements. Each of the high-voltage LED electroluminescent elements comprises at least two PN light emitting diode LEDs connected in series, with at least one electrical connection cable extending between any two of them. At two ends of each of the high-voltage LED electroluminescent elements there is at least one metal electrode for soldering and attaching the wire. At least one electrical jumper wire extends between any two high-voltage LEDs and between the high-voltage LEDs and the power supply of the high-voltage LEDs. Because each of the high-voltage LED light emitting elements contain multiple PN connectors of the LED light emitting diode, the required number of elements used in the light-emitting strip has been reduced, which simplifies the process of connecting semiconductor components and connecting the light-emitting strip wires, as well as increasing the efficiency of producing light-emitting strips. It is not necessary at the same time that the PN connectors of the LED light-emitting diode have an opaque metal connection disk with a large surface area, which ensures an improvement in the output light efficiency, i.e. an increase in the efficiency of light emission.

The LED light emitting strips described above with LED light emitting elements in the 4π angular range can not only be used to manufacture currently used LED light bulbs, but can also be used as stand alone light emitting elements.

At least one series of LED electroluminescent elements connected in series in such a way that PN connectors extend in the same direction, contains a sufficient number of elements so that the total control voltage of at least one electroluminescent strip emitting LED light is similar to a series or series-parallel connection AC voltage available in commercial networks or external DC power source, and was, for example, from 20 to 100% of the peak AC voltage or DC voltage. Therefore, the controller does not require a transformer, so that the present invention provides the provision of a simple and cheap high-efficiency system.

At least one LED light-emitting strip containing LED light-emitting elements in the 4π angular range is connected in series or series-parallel, so they can operate in bidirectional alternating current or unidirectional direct current.

At least one light-emitting strip may be V-shaped, W-shaped, columns, cones, planes or other.

In order to avoid the formation of a shadow on the bulb cover caused by obstructing the light emitted by a given electroluminescent strip emitting LED light by another electroluminescent strip emitting LED light, said electroluminescent strips emitting light are interlaced with each other. Any two of the different light emitting LED strips are therefore not in the same plane.

Various LED light emitting strips are interlaced with each other along a diagonal line of the respective surfaces of a virtual polyhedral column or polyhedral truncated cone.

When at least one LED light-emitting strip is connected in a way that ensures bi-directional AC operation, at least one LED light-emitting strip conducts current in one direction, and at least one further LED light-emitting strip conducts current in the opposite direction . The alternating direction of the alternating current causes the current to pass through the strips successively, thanks to which light is emitted. Of course, at least five LED light emitting strips are used to create a rectangular circuit-like circuit. As with ACLED light-emitting diodes available on the market, the alternating direction of alternating current causes the current to pass through successively through the strips, thanks to which light is emitted. The light-emitting strip is enclosed in a vacuum-sealed light transmitting housing, so that the high operating voltage is also isolated by the light bulb cover or inside. It is therefore possible to directly use the alternating current available in commercial networks. Of course, it is also possible to connect a voltage reducing element, current limiting element or control system in the form of a parallel connected resistor and capacitor or PTC resistor with a positive temperature coefficient and the like. The LED light emitting strip is therefore safe and reliable and provides elimination of the disadvantages associated with the use of high voltage and insecurity occurring in the case of heat sinks of currently used ACLED light-emitting diodes operating with the use of alternating current and HVLED high voltage light-emitting diodes.

If at least one electroluminescent strip emitting LED light is connected in a way that ensures operation in one-way DC mode, it can operate using an external DC source or an AC source. If an external AC source is used, the controller may consist of a rectifier, a filtering circuit and a voltage-reducing circuit and limiting the current containing the capacitor and resistor connected in parallel, it is also possible to use a rectifier and filtering system or a rectifier circuit connected in series with the PTC resistor with a positive temperature coefficient. The controller has a simple circuit, is cheap, does not contain triodes or transformers, does not emit high frequencies and / or does not contain electrolytic capacitors. The controller can be in the form of a relatively simple, non-separating controller with inductance and a DC source that does not contain a transformer.

The light-permeable light bulb cover is transparent, milky, matte or colored, and part of the light bulb cover may have a reflective layer or a series of small prisms or lenses.

The light-permeable lamp cover can be shaped to match any of the currently used types of lamp covers: A, G, R, PAR, T, candlestick, P, PS, BR,

ER or BRL.

The electrical connector can be any of the currently used types of bulb connectors: E40, E27, E26, E14, GU, BX, BA, EP, EX, GY, GX, GR, GZ or G.

Compared to the current state of the art, the present invention has the following advantages:

- High light efficiency. For convective heat dissipation, a gas having a low viscosity coefficient located in a vacuum-sealed bulb is used, which provides solutions to the problems associated with the dissipation of heat generated by LED electroluminescent elements enabling light emission in the 4π angle range. When the electroluminescent elements emit light in the 4π angle range, the light efficiency increases to over 65%. When using a high-voltage electroluminescent LED strip with many LED electroluminescent elements connected in series, the controller circuit efficiency reaches 95% and more. The efficiency of the entire light bulb can reach 130 lm / W and more, and therefore corresponds to the efficiency of currently used LED light bulbs, is twice as high as the efficiency of energy-saving fluorescent light bulbs and ten times greater than the efficiency of conventional light bulbs. The light efficiency can be further increased by using high voltage LED electroluminescent elements with LED electroluminescent elements enabling the light emission in the 4π angle range.

- Low cost. The heat generated during the operation of the LED light emitting diode is carried away by convection and conductivity of the gas, which has a low viscosity coefficient and a high thermal conductivity coefficient, located inside the vacuum-sealed bulb cover and through the bulb cover, without the need for a metal radiator. When using a high-voltage electroluminescent strip emitting LED light, no expensive AC / DC converter with transformer is required. The cost of the entire light bulb has been reduced by two-thirds or more. The costs can be further reduced by using high-voltage LED electroluminescent elements with LED electroluminescent elements enabling light emission in the 4π angle range.

- Long shelf life. The whole bulb does not contain any elements with a short shelf life. Because the LED is placed in a vacuum-sealed light bulb filled with inert gas (helium), it is not exposed to steam or similar substances in the environment at all. The components are also mounted in a dispersed manner and operate using low current at low temperature. The service life of the LED light bulb can reach the lifetime of the LED itself, i.e. 50,000 - 100,000 hours.

- Security and reliability. High voltage electroluminescent strips emitting LED light with high operating voltage are placed in a vacuum-sealed bulb cover. They are therefore safe and reliable, providing a solution to the problems associated with currently used ACLED diodes operating with the use of alternating current and high-voltage HVLED diodes.

- Low weight and small volume. Because it is not necessary to use a metal heat sink and transformer in all LED lighting, the lighting weight is reduced by two-thirds or more. The LED electroluminescent lighting of the present invention shines brighter than energy-saving fluorescent bulbs, and its weight is similar to that of a conventional bulb. The volume of this LED electroluminescent lighting is also close to the volume of a conventional bulb.

- Slight glare. Many small LED electroluminescent elements are distributed in a distributed manner, which reduces glare through LED electroluminescent elements.

Due to the further increase in the internal quantum light efficiency of LED electroluminescent elements and the continuous decline in component prices, LED electroluminescent bulbs with LED electroluminescent elements emitting light in the 4π angle range according to the present invention can become the basic LED electroluminescent lighting.

For lighting purposes, this LED electroluminescent bulb can directly replace a conventional bulb and an energy-saving fluorescent bulb.

Brief description of the figures

These and / or other aspects and advantages will become apparent and will be easy to understand after reading the description of preferred embodiments below in conjunction with the accompanying drawing, in which:

Fig. 1 is a schematic view of a highly efficient LED light bulb design with LED light emitting elements in an angular range of 4π according to one embodiment of the present invention;

Fig. 2 is a schematic view of a highly efficient LED light bulb design with LED light emitting elements in the 4π angle range according to another embodiment of the present invention; FIG. 3 is a schematic view of the construction of a highly efficient LED light bulb with LED light emitting elements in the 4π angle according to another embodiment of the present invention;

Fig. 4 is a schematic view of a highly efficient LED light bulb design with LED electroluminescent light emitting elements in an angular range of 4π according to yet another embodiment of the present invention;

Fig. 5 is a schematic view of a highly efficient LED light bulb design with LED light emitting elements in the 4π angular range according to yet another embodiment of the present invention;

Fig. 6 is a schematic front view of a LED light emitting strip structure housed in a high efficiency light bulb with LED light emitting elements in an angular range of 4π according to one embodiment of the present invention;

Fig. 7 is a schematic view of the light emitting strip structure according to one embodiment of the present invention along the line AA in Fig. 6;

Fig. 8 is a schematic view according to another embodiment of the present invention in a light emitting strip structure along the line AA in Fig. 6;

Fig. 9 is a schematic view of the light emitting strip structure according to another embodiment of the present invention along the line AA in Fig. 6;

Fig. 10 shows, according to yet another embodiment of the present invention, the light emitting strip structure in a schematic view along the line AA in Fig. 6; Fig. 11 shows, according to yet another embodiment of the present invention, the structure of the light emitting strip in a schematic view along the line AA in Fig. 6; FIG. 12 is, according to yet another embodiment of the present invention, a light emitting strip structure in a schematic view along the line AA in Fig. 6; Fig. 13 is a schematic view of the light emitting strip structure according to yet another embodiment of the present invention along the line AA in Fig. 6;

Fig. 14 shows, according to one embodiment of the present invention, in a schematic front view, the construction of an LED light emitting strip placed in a high efficiency LED light bulb with LED light emitting elements in the angular range of 4π;

Fig. 15 is a schematic view according to one embodiment of the present invention of the light-emitting strip along line BB of Fig. 14;

Fig. 16 shows, according to one embodiment of the present invention, a schematic front view of the LED light emitting strip structure with high voltage LED light emitting elements in the angular range of 4π;

Fig. 17 shows, according to one embodiment of the present invention, a schematic view of another arrangement of LED light emitting strips in a high efficiency LED light bulb with LED light emitting elements in an angular range of 4π;

Fig. 18 shows, according to one embodiment of the present invention, a schematic view of another arrangement of electroluminescent LED light emitting strips in a high efficiency LED light bulb with electroluminescent light emitting elements in an angular range of 4π;

Fig. 19 shows, according to one embodiment of the present invention, a schematic view of another arrangement of electroluminescent LED light emitting strips in a high efficiency LED light bulb with electroluminescent light emitting elements in an angular range of 4π; and

Fig. 20 shows, according to one embodiment of the present invention, a schematic view of another arrangement of electroluminescent LED light emitting strips in a high efficiency LED light bulb with electroluminescent light emitting elements in the angular range of 4π.

The numerical references used in the attached drawing are briefly described below.

1. Light-transmitting LED light bulb cover

1a. Expanded main column tube

2. Outlet tube

2a. Place of closing the outlet tube

3. Electrical power supply

3a. Curved power supply lead

4. Stand

42. Bracket

5. Main column

6, 6a, 6b. LED light emitting strip

7. Controller

8. Electrical connector

9. Connection element

10. LED electroluminescent bulb

11, 11a. Metal wire located on the main column

12. Electrical connection cable

13. Vacuum closed chamber

14. Reflective layer

14a. Reflective plate

15. Transparent substrate

16, 16a. LED electroluminescent element

17. Electrical connection cable extending between the elements

18. Lead of the electrode

19. Fastening element for electric power supply

twenty. Soldering end of the power supply

21. Electrical connection cable

22. Transparent glue

23. Light emitted

24. PN connector

25, 25a. Transparent dielectric layer

26, 26a. Phosphor luminescent powder layer

27. A light-emitting strip with a transparent tube or tube made of phosphor luminescent powder

28. A transparent tube or tube made of phosphor luminescent powder

29. Electrical power supply

thirty. Place of closing

31. Transparent insulator

32. Phosphor luminescent powder layer

33. A light-emitting strip with a high-voltage LED electroluminescent element

34. High voltage LED electroluminescent element

35. PN LED diode connector

36. Electrical connection cable extending between PN connectors

37. A connection disc located at two ends of a high voltage LED electroluminescent element

38. Electrical jumper cable extending between high-voltage LED electroluminescent elements and / or electrical jumper cable extending between high-voltage LED electroluminescent elements and power supply

39. Cone axis

40. An electroluminescent strip emitting multi-colored LED light

41. Virtual polyhedron

Detailed description of an embodiment of the invention

The technical solution of the present invention will be described in more detail in the context of the following embodiments, this description being made with reference to Figures 1 to 20. In the present description, the same or similar reference numerals indicate the same or similar components. The explanation of how to implement the present invention made with reference to the accompanying drawing is intended to provide a general idea of ​​the novel concept of the present invention, not the limitation of the present invention.

Referring to Fig. 1, a schematic view of a highly efficient LED light bulb design with LED light emitting elements in the 4π angular range according to one embodiment of the present invention is shown. Said LED light bulb has a translucent cover 1 LED light bulb, main column 5 with outlet tube 2 and bracket, at least one electroluminescent strip 6 emitting LED light containing an LED electroluminescent element emitting light in the angular range of 4π, controller 7, electrical connector 8 and a connecting element 9 connecting the bulb cover 1 to the electrical connector 8. Light-transmitting cover 1 of LED light bulb, main column 5, light-emitting strip 6 emitting LED light, controller 7, electrical connector 8 and connection element 9 are connected to each other and are integral parts of the 10 LED light bulb. The LED light emitting strip 6 is mounted on the main column 5 using the power supply inlet 3 and the metal wire 11. The electrodes of the LED light emitting strip 6 are in turn connected to the controller 7, the electric connection cable 12 (if required), the electrical connector 8 and the external power supply via the power supply 3 and / or the metal cable 11 of the main column 5. Switching on an external power source causes the electroluminescent strip 6 to emit LED light. The light-transmitting cover 1 of the LED light bulb and the main column 5 form a vacuum-sealed chamber 13 that is vacuum-sealed. The interior of the chamber 13 is filled with gas having a low viscosity coefficient and a large thermal conductivity coefficient, which allows the heat generated by the electroluminescent strip 6 emitting LED light to be removed during the operation of the electroluminescent strip 6 emitting LED light, which is done by convection and thermal conductivity of the gas and through cover light for 1 LED electroluminescent bulb.

It should be understood that, as shown in Fig. 1, the stand 4, the power supply 3 and the metal wire 11 are used as a bracket 42 to fix the LED light emitting strip 6. In the present embodiment, the main column 5 has an outlet tube 2, a widened tube 1a and a bracket 42 (including the power supply inlet 3, the stand 4 and the metal wire 11) which are connected to each other. As described above, the main column 5 is vacuum-sealed with a cover 1 of an LED light bulb. In particular, the widened tube 1a is vacuum sealed with the cover 1 of the LED light bulb at the point where they are connected to each other. One of ordinary skill in the art will understand that the main column of the present embodiment is constructed in the same manner as for the various main column components known in the prior art, and therefore a detailed description of the main column is omitted here.

In particular, the cover 1 of the LED light bulb and the main column 5 are fused together at the points of connection by applying a high temperature heating process, which ensures the creation of a vacuum-closed chamber 13. The process used in this embodiment is identical to the closing process used for traditional incandescent lamps. The LED light emitting strip 6, the main column stand 4 and the metal connecting cable / wire 11 extending between one end of the power supply lead 3 and the light emitting strip 6 are sealed together in a vacuum-sealed chamber 13; the vacuum-sealed chamber 13 is filled with gas having a low viscosity coefficient and a high thermal conductivity coefficient after the air has been removed via the outlet tube 2; and then the outlet tube 2 is fused at the closure point 2a to seal the gas inside the chamber 13. The gas having a low viscosity coefficient and a large thermal conductivity coefficient that is enclosed within the vacuum-sealed chamber 13 is, for example, helium (He), hydrogen (H2) or a gas mixture of helium and hydrogen, wherein at room temperature the gas pressure is between 50 and 1520 torr. Helium has the lowest viscosity coefficient among the various gases, which is only 116 μΡ (for comparison, the hydrogen viscosity index is 173 μΡ, the air viscosity index is 922 μΡ, and the water viscosity index is 8937 μΡ). Therefore, helium allows easy convection heat dissipation to be carried out easily to dissipate heat generated during the operation of the LED light emitting strip to ensure the proper operation of the light emitting LED strip.

From the foregoing, it can be seen that the vacuum-sealed chamber 13 only contains an electroluminescent strip 6 emitting LED light, a stand 4 of the main column 5 and a metal wire / connection wire 11 extending between one end of the power cord 3 and the light emitting strip 6 . The electrodes at the two ends of the light emitting strip 6 emitting LED light are in turn electrically connected to the controller 7, the electric connection cable 12 and the outside of the vacuum-sealed chamber 13 by an electrical connector 8 via a power supply 3 on the column main 5. The electrical connector 8 is used to connect an external power source, which ensures that the electroluminescent strip 6 emitting LED light is lit.

The LED light emitting strip 6 is protected by inert gases such as helium or other gas having a low viscosity coefficient, as well as vacuum-sealed, so that the light emitting electroluminescent strip does not affect the surrounding water vapor and similar substances. This ensures an extension of the LED lamp's lifetime.

The LED light emitting strip 6 comprises at least one series of PN connectors connected in series with each other in such a way that the PN connectors extend in the same direction. The number of LED electroluminescent elements is large enough that the total control voltage of at least one electroluminescent strip emitting LED light when connected in series or in series in parallel is close to the voltage of an external AC source or voltage of an external DC power source, for example from 20 up to 100% of the peak AC voltage or DC power supply used. As a result, a high-voltage electroluminescent strip emitting LED light with an LED electroluminescent element emitting light in the 4π angle range has the following advantages: the controller does not require a transformer, the system design is simplified, efficiency is increased, and costs are reduced.

The at least one LED light emitting strip 6 can be connected in series or in series-parallel so that they can operate in bi-directional alternating current mode or unidirectional direct current mode. Fig. 1 shows an example in which two electroluminescent strips emitting LED light are connected in series, which ensures their operation in unidirectional direct current mode.

When connecting at least one LED strip 6 emitting LED light in a manner adapted to operate in unidirectional direct current mode, its external power source may be in the form of a DC power source or an AC power source. If an external AC power source is used, the controller 7 may consist of a voltage lowering system and a current limiting system containing a capacitor and a resistor connected in parallel as well as a rectifier and filtering system, it is also possible to use a rectifier and a filtering system or circuit rectifier connected in series with a PTC resistor with a positive temperature coefficient, without using triodes, transformers and / or electrolytic capacitors, it is also possible to use a DC device that does not contain a switching power supply or a transformer. The cost of the controller is therefore low.

When at least one electroluminescent strip 6 emitting LED light is connected in a manner that ensures operation in two-way alternating current mode, at least one electroluminescent strip emitting LED light conducts current in one direction, and at least one further electroluminescent strip 6 emitting LED light conducts electricity in the opposite direction. The alternating direction of the alternating current causes the current to pass through the strips successively, thanks to which light is emitted. It is of course possible to arrange at least five electroluminescent strips emitting 6 LED light in such a way that a circuit resembling the rectifier bridge circuit is formed. The alternating direction of the alternating current therefore causes current to be transmitted through four light-emitting strips arranged on four arms, which ensures light emission, while the strip diagonally connected to the four arms conducts current and always shines regardless of the direction of the alternating current.

If the light-emitting strips operate in a two-way AC mode, they can operate using an AC source directly available in commercial networks, while the controller 7 consists only of series-connected PTC resistors with a positive temperature coefficient or resistors limiting the current.

An LED light emitting strip containing LED electroluminescent elements emitting light in an angular range of 4π can be in the form of a high voltage LED light emitting strip, the operating environment in which high voltage occurs is vacuum sealed in an LED light bulb that has been vacuum sealed. This high-voltage electroluminescent strip emitting LED light is therefore safe and reliable.

The light transmitting cover of 1 bulb is transparent, milky, matte or colored. Of course, if required, part of the light bulb cover may have a reflective layer or a series of small prisms or lenses.

The light-permeable cover of one bulb can have a shape corresponding to any of the currently used types of covers for bulbs: A, G, R, PAR, T, candle, P, PS, BR, ER, BRL or other.

Electrical connector 8 can be in the form of any of the currently used types of bulb connectors: E40, E27, E26, E14, GU, B22, BX, BA, EP, EX, GY, GX, GR, GZ or G, so you can adapt it for mounting in various lamp holders or lighting fittings. Fig. 1 shows an example of an E-type bulb head. It should be noted that in the following embodiments of the present invention, reference numerals identical to those used with reference to Fig. 1 indicate elements that are identical or functionally similar. For convenience, they are not re-described in the following embodiments unless they have a different design or function.

Fig. 2 is a schematic view of a high efficiency LED light bulb design comprising LED electroluminescent elements enabling light emission in the 4π angle range according to another embodiment of the present invention. In the case of figs 2, in order to avoid the formation of a LED light bulb (here referred to as a 1 bulb cover) or on the lighting fixture of a shadow caused by covering the light emitted by a given electroluminescent strip emitting LED light by another electroluminescent strip emitting LED light, individual electroluminescent strips emitting LED light are interwoven with each other. This means that any two of the different light emitting LED strips are not in the same plane. In the present embodiment, the LED light emitting strips 6 have the form of two LED light emitting strips 6a and 6b whose lower ends (adjacent the end of the discharge tube 2) are on the same horizontal plane (or at the same height level) in Fig. . 2, while their upper ends are mounted on the front and back.

Fig. 3 is a schematic view of a highly efficient LED light bulb design with LED light emitting elements in the 4π angle range according to another embodiment of the present invention. In particular, the cover 1 of the bulb is of the PAR type here, the cover 1 of the bulb is equipped with a light-reflecting layer 14 located on its inner wall, and the electroluminescent strip 6 emitting LED light is attached to the metal wire 11 of the main column 5 and the supply of 3 power supply . In order to increase the light efficiency, there is a light reflecting plate 14a in the lower part of the bulb cover 1 that reflects the downward directed light emitted by the LED light emitting strip 6, which increases the light efficiency.

Fig. 4 is a schematic view of a highly efficient LED light bulb design with LED light emitting elements in the 4π angle range according to yet another embodiment of the present invention. The cover 1 of the bulb has a T-shape here, and at least one electroluminescent strip 6 emitting LED light is attached directly to the power supply terminals 3 and 3a of the main column 5. The power supply lead 3a connected to the upper end of the LED light emitting strip 6 is curved, thus avoiding the creation of a shadow on the bulb 1 of the bulb caused by obstructing the light emitted by the electroluminescent strip 6 emitting LED light by extending parallel to the power supply. The cover 1 of the bulb is equipped with a luminescent powder layer 26a located on its inner wall, while the LED light emitting electroluminescent strip has no luminescent powder layer. Electrical connector 8 is directly connected to the lamp cover 1. It is important to note that in this example, the electrical power outlet 3a can be regarded as the curved support of an LED light emitting strip 6.

Fig. 5 is a schematic view of a highly efficient LED light bulb design with electroluminescent light emitting elements in the 4π angular range according to yet another embodiment of the present invention. In this example, the bulb cover 1 has the form of a R-type reflective bulb cover, and the inner wall of the bulb cover 1 has a reflective layer 14. Four electroluminescent LED light-emitting strips connected in series are attached to the main column 5 using the power supply 3, the metal wire 11a of the main column and the metal wire 11 of the stand 4.

Fig. 6 is a schematic front view of the structure of an electroluminescent LED light emitting LED strip with high efficiency LED electroluminescent light emitting elements in an angular range of 4π according to one embodiment of the present invention. The LED light emitting strip 6 has a transparent substrate 15 on which at least one series of LED 16 electroluminescent elements are disposed. The elements of at least one series of 16 LED electroluminescent elements are connected in series in such a way that the PN connectors extend in the same direction. An electric jumper 17 is placed between the 16 LEDs. At the two ends of the transparent substrate 15 are respectively the leads 18 of the LED electrodes and fasteners 19. One of the ends 20 of the lead 18 of the electrode facing the electroluminescent elements 16 LED is exposed, in order to electrically connect the connecting cable 21 and elements 16 LEDs.

The transparent substrate 15 is made of glass, hard glass, quartz glass, transparent ceramic material or plastic or similar material. The fastening elements 19 of the electrode leads 18 located at the two ends of the electroluminescent strip 6 emitting LED light are made of high temperature glue, plastic, silver mass or easily fusible glass. Because this LED electroluminescent bulb uses a vacuum closed chamber formed by vacuum closing the LED bulb cover and main column, while the vacuum closed chamber is filled with gas having a low viscosity coefficient and a high thermal conductivity coefficient ensuring fast heat dissipation, in contrast to electroluminescent strips emitting LED light known in the current state of the art, the present invention is not limited to the use of only a very expensive transparent substrate made of sapphire or diamond, which is intended to provide resistance to the high temperature generated by LED light emitting strips. The transparent substrate of the present LED light emitting strips 6 can therefore be made using relatively cheap materials such as glass, hard glass, quartz glass, transparent ceramic material or plastic, which reduces the cost of producing LED light emitting strips 6.

Connected in series, the elements 16 mounted on the transparent substrate 15 may be in the form of LED electroluminescent elements with the same or different lighting colors, e.g. emitting identical blue light, ultraviolet light or other monochrome light. Elements can also emit light of different colors, which is aimed at obtaining different colors of light or white light. If different numbers of LEDs with different light colors are selected, it is possible to obtain white light with a high color rendering index having different color temperatures.

Fig. 7 shows the construction of an LED light emitting strip 6 in a schematic cross-sectional view along the line AA in Fig. 6 As shown in Fig. 7, the electroluminescent elements 16 are mounted on a transparent substrate 15 using transparent adhesive 22. The substrates of the electroluminescent elements 16 are transparent. The light is emitted through the PN 24 connectors of the electroluminescent element 16. Part of the emitted light can be emitted directly towards the electrical jumper 17, and another part of the emitted light (i.e., the light reflected towards the transparent substrate 15 by total reflection and the light originally directed towards the transparent substrate 15) can be emitted via the substrate substrate and transparent substrate 15 of the light-emitting strip. As shown in fig. 7, based on the emitted light 23, it can be concluded that 16 LED electroluminescent elements allow the emission of light in the 4π angular range, which ensures a significant reduction in light loss emitted by PN connectors caused by reflection, multiple reflections and absorption by 16 LED electroluminescent elements, thanks to which it is possible to dramatically increase the light efficiency of LED electroluminescent elements and external quantum light efficiency. Therefore, the efficiency of light emitting by LED electroluminescent elements was increased. The transparent adhesive 22 may be, for example, epoxy resin, modified resin, silica gel or similar material.

Figure 8 shows, according to another embodiment of the present invention, a schematic cross-sectional view of the structure of an electroluminescent strip 6 emitting LED light along the line AA in Figure 6. In this embodiment, the 16 LED electroluminescent elements and the transparent substrate 15 on which the 16 LED electroluminescent elements are located, has a transparent dielectric layer 25 with a high refractive index, high light transmittance and high thermal conductivity, which is intended to improve the transmission of light generated by the LED 16 electroluminescent elements towards the connection wire 17 and to protect the elements 16 and their connection wire 17. The transparent insulator may be, for example, silica gel, epoxy resin or plastic.

If LED electroluminescent elements emit white or ultraviolet light and luminescent powder is required to transform the light into white or other light, outside of the LED 6 emitting light strips such as those shown in Figures 6, 7 and 8, it is also necessary to place a layer of luminescent powder. The luminescent powder layer can be tightly attached to the surface of the LED light emitting strip 6 or formed as a coating applied to the inner or outer wall of a transparent dielectric tube located outside the LED light emitting strip 6. The luminescent powder can of course be mixed with the wall material of the transparent dielectric tube (e.g. tube made of luminescent powder) or can be applied in the form of a coating on the inner wall of the bulb cover 1, as is the case with the phosphor powder layer 26a shown in Fig. 4.

Fig. 9 is a schematic cross-sectional view of the structure of an LED light-emitting strip having a luminescent powder layer according to one embodiment. In this embodiment, a coating in the form of a homogeneous layer of luminescent powder 26 has been applied to the outer surfaces around the LEDs 16 and the transparent substrate 15. In other words, as shown in Fig. 7, a coating in the form of a homogeneous layer of luminescent powder 26 is applied to the outer surfaces of the electroluminescent strips emitting LED light.

The luminescent powder layer 26 is made by mixing luminescent powder and a transparent insulator. The transparent insulator may be, for example, silicone adhesive, epoxy resin, plastic, transparent varnish, high molecular polymer or similar material.

Fig. 10 is a schematic cross-sectional view of the structure of an LED light-emitting strip having a luminescent powder layer according to another embodiment. In the case of Fig. 10, the electroluminescent elements 16 LED and the surface of the transparent substrate 15, on which the electroluminescent elements are placed, were first applied a transparent dielectric layer 25 (as shown in Fig. 8), and then a layer of luminescent powder 26 was applied around transparent substrate 15 and transparent dielectric layer 25.

Fig. 11 is a schematic cross-sectional view of the structure of an LED light emitting strip having a luminescent powder layer according to another embodiment. In the case of figs 11, around the transparent substrate 15 and the transparent dielectric layer 25 on which the LED electroluminescent elements 16 are placed, a transparent dielectric layer 25a was first applied, and then a uniform layer of luminescent powder 26 was applied around the transparent dielectric layer 25a.

Fig. 12 is a schematic cross-sectional view of the structure of an LED light emitting strip having a luminescent powder layer according to another embodiment. In Fig. 12, a transparent dielectric layer 25 was first applied around the LEDs 16 and a transparent substrate 15, and then a uniform layer of luminescent powder 26 was applied around the transparent dielectric layer 25.

Fig. 13 is a schematic cross-sectional view of the structure of an LED light emitting strip having a luminescent powder layer according to another embodiment. In Fig. 13, a uniform layer of luminescent powder 26 was first applied around the elements 16 and a transparent substrate 15, followed by a transparent dielectric layer 25 around the luminescent powder layer 26.

It is also possible to place the LED light emitting strip 6 shown in FIG. 6 outside the transparent tube to protect the LED electroluminescent elements. Of course, a luminescent powder layer can also be placed on the electroluminescent strips 6 emitting LED light. In fig. 14 is a schematic front view of a LED light emitting strip structure having a transparent outer tube according to another embodiment. As shown in Figure 14, the LED light emitting strip 27 comprises a transparent outer tube 28 in which the transparent substrate 15 is sealed with mounted 16 LED electroluminescent elements. The electrodes of the LED 16 electroluminescent elements are connected to the electric power supply leads 29 located at both ends of the transparent tube 28, the electric power supply 29 being sealed together with the transparent tube 28 at the closing point 30. In the case of Figure 14, the LED 16 electroluminescent elements can be in the form of LED electroluminescent elements with two different lighting colors. For example, the LED 16 electroluminescent element emits blue light and the LED 16a electroluminescent element emits red light. The 16a LED electroluminescent element with different lighting colors can be used to change the color temperature and color rendering index of the emitted light.

Fig. 15 is a schematic view of the structure of an LED light emitting strip 27 with LED electroluminescent elements emitting light in the 4π angle range, taken along the BB line in Fig. 14. In Fig. 15, 16 LED electroluminescent elements and their transparent substrate 15 also have a transparent tube 28, which is made of glass, plastic or silicone adhesive. If the light emitting strip 27 used requires the use of a luminescent powder layer, the powder may be applied to the inner or outer wall of the transparent tube 28. Figure 15 is an example in which the luminescent powder layer 32 is applied to the inner wall of the transparent tube 28.

As shown in Figure 15, the luminescent powder can also be mixed with a transparent dielectric of the transparent tube 28. This means that the luminescent powder is mixed with a transparent dielectric, such as glass, plastic, silicone adhesive, to produce a transparent tube with luminescent powder. As a result, it is not necessary to re-coat the inner or outer wall of the transparent tube 28 with a layer 32 of luminescent powder.

As shown in Figure 15, the space between the transparent tube 28 and the LED electroluminescent elements, as well as the transparent substrate 15, can be filled with materials 31 with a high coefficient of thermal conductivity, high light transmittance and a high refractive index, e.g. a transparent silicone adhesive , epoxy, plastics or similar materials. If LED electroluminescent elements emit light in the angular range of 4π, the light losses emitted by LED electroluminescent elements on the contact surfaces of different insulators are very small, because the glass substrate, transparent tube and glass tube have similar refractive indexes, resulting in high light efficiency , i.e. high efficiency of light emitting by LED electroluminescent elements.

Fig. 16 is a schematic front view of an LED light emitting strip structure with LED light emitting elements in the 4π angle range according to another embodiment of the present invention. As shown in fig. 16, in the case of an LED light emitting strip 33 comprising LED electroluminescent elements emitting light in an angular range of 4π, the substrates of the LED electroluminescent elements are transparent. LED electroluminescent elements are in the form of high-voltage LED electroluminescent elements, and each of the 34 LED high-voltage electroluminescent elements contains at least two PN 35 LED connectors connected in series. At least one electrical connection cable 36 extends between the respective PN connectors, which ensures their connection with each other. At both ends of each of the high-voltage LED electroluminescent elements there is at least one metal electrode 37 intended for soldering and connecting the wire. At least one electrical connection cable 38 may extend between different high-voltage LEDs as well as between high-voltage LEDs and power supply 18 to the high-voltage LEDs emitting LED light.

As shown in Fig. 16, at least one of the high-voltage LED electroluminescent elements 34 of the LED light emitting strip 33 may have the same or a different color of light. The LED light emitting strip 33 may have a transparent dielectric layer on the surface of these elements, as is the case with Figures 6 and 14. It is also possible to place a layer of luminescent powder around the light emitting strip 33.

It should be appreciated that the light emitting strips 6, 27 and 33 described above emitting LED light containing light emitting LED elements in the angular range of 4π can be used to produce LED light bulbs as shown in Figures 1 to 5 or used separately as a light-emitting element.

When used to make LED light bulbs, the position of at least one LED light-emitting strip can be customized, e.g. column shape, "V", "W", cone, plane and the like can be used. It can be placed, for example, as shown in Figs. 1 to 5 or Figs. 17 to 20. If it is required to avoid the shadow on the bulb cover caused by obstructing the light emitted by a given LED strip emitting LED light by another LED strip emitting LED light, said LED strips emitting LED light should be interlaced with each other as shown in fig 18. LED light emitting strips are arranged along diagonal lines of various surfaces of a virtual multi-walled column or multi-walled truncated cone. In other words, the LED light-emitting electroluminescent strips assume the physical shape of a multi-walled column or multi-walled truncated cone, with none of the LED light-emitting strips being arranged in the same plane. In fig. 18 four electroluminescent strips emitting LED light are arranged in a square arrangement, whereby they are located respectively on the diagonal lines of four surfaces, which is indicated in Fig. 18 by dashed line 41. The strips 6, 27 and 33 used for emitting light may have the same or different light colors, thanks to which light with different light colors, different color temperatures and different color rendering indexes are provided. For example, in Fig. 17 light strips 6, 27 or 33 are shown comprising four LED light emitting elements and covered with a layer of luminescent powder excited by blue light, which produces yellow light, which can be arranged around the cone axis 39, forming a cone shape. Another LED light emitting strip 40 that emits light of a different color is also used. Another LED light emitting strip 40 emits, for example, red light, which is intended to change the relative luminous flux emitted by both strips, i.e., to obtain an LED light bulb emitting white light with different color temperatures and color rendering indexes.

Although certain embodiments of the inventive concept have been shown and explained above, those skilled in the art will recognize that modifications and changes may be made to these embodiments that do not depart from the scope of the invention as defined in the claims.