Lighting device with color temperature adjusting functionality

Lighting device with adjustable color temperature

The present invention relates to a lighting device, in particular to a lighting device with adjustable color temperature.

In recent years, with the development of the optoelectronic industry, there are more and more types of lighting devices. Among them, the lighting device-related industries with LED components as the main light-emitting components are regarded as star industries. LED components can be divided into high color temperature LED components and low color temperature LED components according to their manufacturing process. Therefore, if the light emitting component of the lighting device is a high color temperature LED component, the light emitted by it is called "cold light" (approximately 7000K). On the contrary, if the light-emitting element of the lighting device is a low color temperature LED element, the light emitted by it is called "warm light" (about 3000K). Therefore, it is conceivable that whether it is cold light or warm light, there are still obvious differences between the two and the natural sunlight, and such differences will cause different levels of perception to the human eye.

In view of this, the manufacturer of the lighting device has introduced a white light lighting device with adjustable color temperature, so that users can adjust the color temperature of the light emitted by the lighting device according to their preferences to obtain better eye comfort. Please refer to the first figure, which is a structural diagram of a conventional white light illuminating device with adjustable color temperature. As shown in the first figure, the white light illuminating device 1'with adjustable color temperature includes an array formed by intersecting a plurality of first light-emitting diodes 2'and a plurality of second light-emitting diodes 3'. In the structure of the white light illumination device 1'with adjustable color temperature, the first light-emitting diode 2'can emit a warm white (WW) light 4'with a color temperature ranging from 2500K to 4000K, and the second light-emitting diode 2' The polar body 3'can emit a cold white (CW) light 5'with a color temperature ranging from 6000K to 10000K. And, as shown in the first figure, the warm white light 4'and the cold white light 5'combine to form an output light 6', wherein the color temperature of the output light 6'depends on the warm white light 4'and the cold white light 5' The relative contribution ratio.

In this way, by arranging the plurality of first light-emitting diodes 2'and the plurality of second light-emitting diodes 3'to form a light-emitting diode array, the white light illuminating device 1'with adjustable color temperature is completed In addition, the user can control the relative contribution ratio of the plurality of first light-emitting diodes 2'and the plurality of second light-emitting diodes 3'through a control module (not shown), so that the The white light illuminating device 1'with adjustable color temperature can output an output light 6'of a selected color temperature. Please refer to the second figure, which is a structural diagram of the control module of the conventional white light illuminating device with adjustable color temperature. As shown in the second figure, it is used to control the plurality of first light emitting diodes 2'and the plurality of The second light-emitting diode 3'light-emitting control module 20' includes a variable resistor Rw and a current source I, wherein a first driving current I can be changed by adjusting the variable resistor Rw_AAnd the second drive current I_BThe value of, thereby adjusting the relative contribution ratio of the plurality of first light-emitting diodes 2'and the plurality of second light-emitting diodes 3'.

Therefore, through the above, we can know that the conventional white light illuminating device 1'with adjustable color temperature can provide the user with the function of adjusting the color temperature, so that the user can adjust the color temperature of the light emitted by the illuminating device according to their preferences, thereby Obtain white light that provides better eye comfort. However, the conventional white light illuminating device 1'with adjustable color temperature still has the following shortcomings and deficiencies:

1. As shown in the first figure, the first light-emitting diode 2'and the second light-emitting diode 3'are alternately arranged in an array, and the array is driven by the same current source I, so, Once the current source I loses its efficacy, all the first light-emitting diodes 2'and the second light-emitting diodes 3'will not be able to emit light.

2. As shown in the second figure, in the conventional white light illuminating device 1'with adjustable color temperature, a first driving current I is changed by adjusting the variable resistor Rw_AAnd the second drive current I_BAnd then adjust the relative contribution ratio of the plurality of first light-emitting diodes 2'and the plurality of second light-emitting diodes 3'. Therefore, once the variable resistor Rw loses its function, the adjustment of the The relative contribution ratio of the first light-emitting diode 2'and the second light-emitting diode 3'.

Therefore, in view of the disadvantages and shortcomings of the conventional lighting device and the conventional white light lighting device with adjustable color temperature, the inventor of this case has made great efforts to research and create, and finally developed a lighting device with adjustable color temperature.

The main purpose of the present invention is to provide a lighting device with adjustable color temperature, which combines a plurality of first high color temperature light emitting elements, a plurality of first low color temperature light emitting elements, a plurality of second low color temperature light emitting elements, and a plurality of second light emitting elements. The high-color-temperature light-emitting elements are respectively arranged into a first high-color-temperature light-emitting element array, a first low-color-temperature light-emitting element array, a second low-color-temperature light-emitting element array, and a second high-color-temperature light-emitting element array. In addition, a first A driving unit, a second driving unit, a third driving unit, and a fourth driving unit respectively control the first high color temperature light emitting element array, the first low color temperature light emitting element array, and the second low color temperature light emitting element array , And the second high color temperature light emitting element array to selectively drive the plurality of first high color temperature light emitting elements, the plurality of first low color temperature light emitting elements, the plurality of second low color temperature light emitting elements, and the plurality of light emitting elements The second high color temperature light emitting element emits light, thereby obtaining a color light with a specific color temperature.

Another object of the present invention is to provide a lighting device with adjustable color temperature, which combines a plurality of first high color temperature light emitting elements, a plurality of first low color temperature light emitting elements, a plurality of second low color temperature light emitting elements, and a plurality of first light emitting elements. Two high-color-temperature light-emitting elements are respectively arranged into a first high-color-temperature light-emitting element array, a first low-color-temperature light-emitting element array, a second low-color-temperature light-emitting element array, and a second high-color-temperature light-emitting element array. In addition, a first A driving unit, a second driving unit, a third driving unit, and a fourth driving unit respectively control the first high color temperature light emitting element array, the first low color temperature light emitting element array, and the second low color temperature light emitting element The array and the second high-color-temperature light-emitting element array, so that when one or two of the four driving units cannot function, the remaining driving units can also control the array of light-emitting elements connected to it to drive the light-emitting elements to emit light.

Therefore, in order to achieve the above-mentioned object of the invention, the inventor of this case proposes a lighting device with adjustable color temperature, which includes: a light emitting element array module, which includes: a first high color temperature light emitting element array consisting of a plurality The first high color temperature light emitting elements are arranged to emit a first high color temperature light; a first low color temperature light emitting element array is formed by a plurality of first low color temperature light emitting elements arranged to emit a first low color temperature light ; A second low color temperature light emitting element array, which is arranged by a plurality of second low color temperature light emitting elements, can emit a second low color temperature light; and a second high color temperature light emitting element array, is composed of a plurality of second highest The color temperature light emitting elements are arranged to emit a second high color temperature light; a first driving unit is coupled to the first high color temperature light emitting element array for driving the plurality of first high color temperature light emitting elements to emit light; A second driving unit is coupled to the first low color temperature light emitting element array for driving the plurality of first low color temperature light emitting elements to emit light; a third driving unit is coupled to the second low color temperature light emitting element array , Used to drive the plurality of second low color temperature light emitting elements to emit light; a fourth driving unit, coupled to the second high color temperature light emitting element array, for driving the plurality of second high color temperature light emitting elements to emit light; The control unit is coupled to the light-emitting element array module, the first drive unit, the second drive unit, the third drive unit, and the fourth drive unit, wherein the main control unit can control the first drive The unit, the second driving unit, the third driving unit, and the fourth driving unit further selectively drive the plurality of first high color temperature light emitting elements, the plurality of first low color temperature light emitting elements, and the plurality of second low color temperature light emitting elements to emit light Element, and the plurality of second high-color-temperature light-emitting elements emit light, so that the light-emitting element array module can emit a color light with a specific color temperature; and a power management unit is coupled to the light-emitting element array module and the first The driving unit, the second driving unit, the third driving unit, the fourth driving unit, and the main control unit to provide power to the light emitting element array module, the first driving unit, the second driving unit, and the third driving Unit, fourth drive unit, and main control unit.

In order to be able to more clearly describe the lighting device with adjustable color temperature proposed by the present invention, the embodiments of the present invention will be described in detail below in conjunction with the drawings.

Please refer to Figure 3, which is a structural diagram of a lighting device with adjustable color temperature of the present invention. As shown in Figure 3, the lighting device 1 with adjustable color temperature includes: a light emitting element array module 11, a first The driving unit 13, a second driving unit 14, a third driving unit 15, a fourth driving unit 16, a main control unit 17, and a power management unit 18.

Continue to refer to Figure 3, and also refer to Figure 4A, which is the first structure diagram of the light-emitting element array module of the lighting device with adjustable color temperature. As shown in Figure 4A, the light-emitting element array module The 11 series includes: a first high color temperature light emitting element array 111, which is composed of a plurality of first high color temperature light emitting elements 1111 arranged to emit a first high color temperature light; a first low color temperature light emitting element array 112, which is composed of A plurality of first low color temperature light emitting elements 1121 are arranged to emit a first low color temperature light; a second low color temperature light emitting element array 113 is formed by a plurality of second low color temperature light emitting elements 1131 arranged to emit a light The second low color temperature light; and a second high color temperature light-emitting element array 114, which are arranged by a plurality of second high color temperature light-emitting elements 1141, can emit a second high color temperature light. In the structure of the lighting device 1 with adjustable color temperature of the present invention, LED elements or OLED elements can be selectively used as the first high color temperature light emitting element 1111, the first low color temperature light emitting element array 112, and the second low color temperature light emitting element array 112. The color temperature light emitting element array 113 and the second high color temperature light emitting element array 114.

The aforementioned first driving unit 13 is coupled to the first high color temperature light-emitting element array 111 for driving the plurality of first high color temperature light-emitting elements 1111 to emit light; the second driving unit 14 is coupled to the first low The color temperature light emitting element array 112 is used to drive the plurality of first low color temperature light emitting elements 1121 to emit light; the third driving unit 15 is coupled to the second low color temperature light emitting element array 113 to drive the plurality of second low color temperature light emitting elements The color temperature light emitting element 1131 emits light; the fourth driving unit 16 is coupled to the second high color temperature light emitting element array 114 for driving the plurality of second high color temperature light emitting elements 1141 to emit light.

Continue to refer to Figures 3 and 4A, and at the same time, please refer to Figure 5, which is an architecture diagram of the main control unit. As shown in Figures 3 and 5, the aforementioned main control unit 17 is coupled to The light-emitting element array module 11, the first driving unit 13, the second driving unit 14, the third driving unit 15, and the fourth driving unit 16, and the main control unit 17 includes: a first controller 171 , A second controller 172, a third controller 173, and a fourth controller 174; wherein, the first controller 171, the second controller 172, the third controller 173, and the fourth controller The controller 174 can control the first driving unit 13, the second driving unit 14, the third driving unit 15, and the fourth driving unit 16, thereby selectively driving the plurality of first high color temperature light emitting elements 1111 The plurality of first low color temperature light emitting elements 1121, the plurality of second low color temperature light emitting elements 1131, and the plurality of second high color temperature light emitting elements 1141 emit light, so that the light emitting element array module 11 can emit light with a specific color temperature. Shade.

In addition, the aforementioned power management unit 18 is coupled to the light-emitting element array module 11, the first driving unit 13, the second driving unit 14, the third driving unit 15, the fourth driving unit 16, and the The main control unit 17 provides power to the light-emitting element array module 11, the first drive unit 13, the second drive unit 14, the third drive unit 15, the fourth drive unit 16, and the main control unit 17.

It must be particularly noted that, in the structure of the lighting device 1 with adjustable color temperature of the present invention, the first driving unit 13, the second driving unit 14, the third driving unit 15, and the fourth driving The unit 16 drives the plurality of first high color temperature light emitting elements 1111, the plurality of first low color temperature light emitting elements 1121, the plurality of second low color temperature light emitting elements 1131, and the plurality of second high color temperature light emitting elements 1141 Therefore, if one or two of the four driving units fail to function, the remaining two driving units can continue to drive the connected array of light-emitting elements to emit light. In addition, as shown in FIG. 5, the main control unit 17 further includes a display panel 176 for displaying the color type of the color light of the specific color temperature and its current color temperature.

And, different from the conventional white light illuminating device with adjustable color temperature, in the architecture of the illuminating device 1 with adjustable color temperature of the present invention, the plurality of first high color temperature light-emitting element arrays 111 emit light. The elements 1111 are connected in parallel, the plurality of first low color temperature light emitting elements 1121 in the first low color temperature light emitting element array 112 are connected in parallel, and the plurality of second low color temperature light emitting elements 1131 in the second low color temperature light emitting element array 113 It is connected in parallel, and the plurality of second high color temperature light emitting elements 1141 in the second high color temperature light emitting element array 114 are connected in parallel. Therefore, once one or two of the first high color temperature light emitting elements 1111 fail to function, the first high color temperature light emitting element array 111 can also be continuously driven by the first driving unit 13 to emit light; or, Once one or two of the first low-color-temperature light-emitting elements 1121 fail to function, the first low-color-temperature light-emitting element array 112 can also be continuously driven by the second driving unit 14 to emit light.

Please continue to refer to the third, fourth A, and fifth diagrams, and also refer to the fourth B diagram at the same time, which is the second structure diagram of the light-emitting element array module, as shown in the fourth B diagram, in practical applications In the lighting device with adjustable color temperature of the present invention, a filter 119 can be arranged inside the light-emitting element array module 11, and, if necessary, the filter 119 can be controlled by the main control unit 17 to cover The light-emitting surface of the light-emitting element array module 11 further filters the light of the specific wavelength of the color light with the specific color temperature. More simply, as shown in FIG. 5, the user can control the filter 119 to appear and cover the light emitting surface of the light emitting element array module 11 through the filter switch 175 of the main control unit 17.

In order to explain the lighting device with adjustable color temperature of the present invention more clearly, the following will illustrate with practical application examples. Please refer to Fig. 6A and Fig. 6B, which are examples of table lamp application of the lighting device with adjustable color temperature. As shown in FIG. 6A, the light-emitting element array module 11 is arranged in a lampshade 31 of a desk lamp 3; the main control unit 17 is arranged on a base 32 of the desk lamp 3; the power management unit 18 It is presented in the form of a power supply and has a power plug 33 for connecting to a power socket; in this way, (as shown in the fifth figure) the user can use the first controller 171 and the second controller 171 of the main control unit 17 The controller 172, the third controller 173, and the fourth controller 174 selectively drive the plurality of first high color temperature light emitting elements 1111, the plurality of first low color temperature light emitting elements 1121, and the plurality of second low color temperature light emitting elements The light emitting element 1131 and the plurality of second high color temperature light emitting elements 1141 emit light, so that the light emitting element array module 11 can emit the color light with a specific color temperature.

After the light-emitting element array module 11 in the lampshade 31 emits color light with a specific color temperature, at this time, through the display panel 176 of the main control unit 17, the user can know that the color light with a specific color temperature is current Color type and color temperature; further, as shown in Figure 6B, if the user wants to change the color of the color light, he can control the filter 119 to appear and cover the light through the filter switch 175 of the main control unit 17 The light-emitting surface of the element array module 11 is used to filter the light with a specific wavelength from the color light with a specific color temperature to change the color of the color light; in addition, the user can also use a phosphor doped filter 119 Covers the light-emitting surface of the light-emitting element array module 11, so that when the color light with a specific color temperature enters the filter 119, the phosphor absorbs part of the color light and emits color light of other colors, so that the light-emitting element array module 11 The emitted light has a rich color variation.

In addition, please refer to Figure 7 again, which is an application example of a lighting lamp of a lighting device capable of adjusting color temperature. As shown in Figure 7, the light-emitting element array module 11 is disposed in a cover 41 of a lighting lamp 4 The main control unit 17 is presented in the form of a controller, wherein, if the main control unit 17 is installed on the wall, the power management unit 18 is presented in the form of a power supply; on the other hand, if the main control unit 17 is a remotely controllable controller (ie, remote control), and the power management unit 18 is in the form of a battery.

Please continue to refer to Figure 8, which is the third structural diagram of the light-emitting element array module of the lighting device with adjustable color temperature. As shown in Figure 8, in order to increase the illuminance of the lighting device with adjustable color temperature and make the lighting device with adjustable color temperature have more color temperature combinations, a third high color temperature light-emitting element array 115 and a first Three low-color-temperature light-emitting element arrays 116, an N-th high-color-temperature light-emitting element array 117, and an N-th low-color-temperature light-emitting element array 118 are added to the light-emitting element array module 11, wherein the third high-color-temperature light-emitting element array 115 is composed of a plurality of third high color temperature light emitting elements 1151 arranged to emit a third high color temperature light; the third low color temperature light emitting element array 116 is composed of a plurality of third low color temperature light emitting elements 1161 arranged, A third low-color temperature light is emitted; the N-th high-color-temperature light-emitting element array 117 is formed by arranging a plurality of N-th high-color-temperature light-emitting elements 1171, which can emit a N-th high-color-temperature light; and, the N-th low-color-temperature light-emitting element The array 118 is formed by arranging a plurality of Nth low color temperature light-emitting elements 1181, which can emit an Nth low color temperature light.

Please continue to refer to the eighth figure, and also refer to the ninth figure, which is the second structural diagram of the lighting device with adjustable color temperature of the present invention; and, please also refer to the tenth figure, which is the master of the lighting device with adjustable color temperature The second architecture diagram of the control unit. As shown in the eighth and ninth figures, the third high-color-temperature light-emitting element array 115, the third low-color-temperature light-emitting element array 116, the N-th high-color-temperature light-emitting element array 117, and the N-th low-color-temperature light-emitting element The array 118 is added to the light-emitting element array module 11. Therefore, a fifth driving unit 1A, a sixth driving unit 1B, an Nth driving unit 1C, and an N+1th driving unit 1D must also be added. Join the structure of the lighting device with adjustable color temperature. Wherein, the fifth driving unit 1A is coupled to the third high color temperature light emitting element array 115 for driving the plurality of third high color temperature light emitting elements 1151 to emit light; the sixth driving unit 1B is coupled to the third low color temperature The light emitting element array 116 is used to drive the plurality of third low color temperature light emitting elements 1161 to emit light; the Nth driving unit 1C is coupled to the Nth high color temperature light emitting element array 117 for driving the plurality of Nth high color temperature light emitting elements The light-emitting element 1171 emits light; and the N+1th driving unit 1D is coupled to the N-th low-color-temperature light-emitting element array 118 for driving the plurality of N-th low-color-temperature light-emitting elements 1181 to emit light.

Continuing to refer to the eighth, ninth and tenth figures, since the fifth drive unit 1A, the sixth drive unit 1B, the Nth drive unit 1C, and the N+1th drive unit 1D are added to the In the structure of the lighting device for adjusting the color temperature, therefore, a fifth controller 177, a sixth controller 178, an Nth controller 179, and an N+1th controller 17A must also be added to the main The control unit 17 controls the fifth drive unit 1A, the sixth drive unit 1B, the Nth drive unit 1C, and the N+1th drive unit 1D, respectively.

The components of the second structure of the color temperature adjustable lighting device of the present invention are as shown in Figures 8, 9 and 10, wherein, through the second structure of the color temperature adjustable lighting device, Not only can the illuminance of the lighting device with adjustable color temperature be increased, but also the lighting device with adjustable color temperature can have more color temperature combinations.

Through the above, a lighting device with adjustable color temperature of the present invention has been completely and clearly disclosed, and through the above, it can be known that the present invention has the following advantages:

1. In the present invention, a plurality of first high color temperature light emitting elements, a plurality of first low color temperature light emitting elements, a plurality of second low color temperature light emitting elements, and a plurality of second high color temperature light emitting elements are respectively arranged into a first high color temperature light emitting element Element array, a first low color temperature light emitting element array, a second low color temperature light emitting element array, and a second high color temperature light emitting element array, using a first driving unit, a second driving unit, and a third driving unit , And a fourth driving unit respectively control the first high color temperature light emitting element array, the first low color temperature light emitting element array, the second low color temperature light emitting element array, and the second high color temperature light emitting element array to selectively Driving the plurality of first high color temperature light emitting elements, the plurality of first low color temperature light emitting elements, the plurality of second low color temperature light emitting elements, and the plurality of second high color temperature light emitting elements to emit light, thereby obtaining a light emitting element with a specific color temperature The color light.

2. Following the first point above, in this way, when one or two of the four driving units cannot function, the remaining driving units can also control the array of light-emitting elements connected to it to drive the light-emitting elements to emit light.

3. In the present invention, the plurality of first high color temperature light emitting elements in the first high color temperature light emitting element array are connected in parallel, and the plurality of first low color temperature light emitting elements in the first low color temperature light emitting element array are In parallel, the plurality of second low color temperature light emitting elements in the second low color temperature light emitting element array are connected in parallel, and the plurality of second high color temperature light emitting elements in the second high color temperature light emitting element array are connected in parallel. Therefore, once one or two of the first high-color-temperature light-emitting elements fail to function, the first high-color-temperature light-emitting element array can also be continuously driven by the first driving unit to emit light; or, once the plurality of light-emitting elements If one or both of the first low-color-temperature light-emitting elements cannot function, the first low-color-temperature light-emitting element array can be continuously driven by the second driving unit to emit light.

4. The present invention is updated to add a filter that can be controlled by the main control unit to cover the light-emitting surface of the light-emitting element array module, and then filter the light of the specific wavelength of the color light with a specific color temperature .

5. Following the above point 4, the filter can be doped with a phosphor, so that when the color light with a specific color temperature enters the filter, the phosphor will absorb part of the color light and emit other colors. , So that the light emitted by the light-emitting element array module has a rich color change.

The above detailed description is a specific description of possible embodiments of the present invention, but this embodiment is not intended to limit the scope of the patent of the present invention. Any equivalent implementation or modification that does not deviate from the technical spirit of the present invention shall be included in this case. In the scope of the patent.

<p>1. . . Lighting device with adjustable color temperature</p><p>1'. . . White light illuminating device with adjustable color temperature</p><p>1A. . . Fifth drive unit</p><p>1B. . . Sixth drive unit</p><p>1C. . . Nth drive unit</p><p>1D. . . N+1th drive unit</p><p>11. . . Light-emitting element array module</p><p>111. . . First high color temperature light-emitting element array</p><p>1111. . . The first high color temperature light-emitting element</p><p>112. . . First low color temperature light-emitting element array</p><p>1121. . . The first low color temperature light-emitting element</p><p>113. . . Second low color temperature light-emitting element array</p><p>1131. . . Second low color temperature light-emitting element</p><p>114. . . Second high color temperature light-emitting element array</p><p>1141. . . Second high color temperature light-emitting element</p><p>115. . . The third high color temperature light-emitting element array</p><p>1151. . . The third high color temperature light-emitting element</p><p>116. . . The third low color temperature light-emitting element array</p><p>1161. . . The third low color temperature light-emitting element</p><p>117. . . Nth high color temperature light-emitting element array</p><p>1171. . . Nth high color temperature light-emitting element</p><p>118. . . Nth low color temperature light-emitting element array</p><p>1181. . . Nth Low Color Temperature Light-emitting Element</p><p>119. . . Filter</p><p>13. . . First drive unit</p><p>14. . . Second drive unit</p><p>15. . . Third drive unit</p><p>16. . . Fourth drive unit</p><p>17. . . Main control unit</p><p>17A. . . N+1 controller</p><p>171. . . First controller</p><p>172. . . Second controller</p><p>173. . . Third controller</p><p>174. . . Fourth controller</p><p>175. . . Filter switch</p><p>176. . . Display panel</p><p>177. . . Fifth controller</p><p>178. . . Sixth controller</p><p>179. . . Nth controller</p><p>18. . . Power Management Unit</p><p>2'. . . First light emitting diode</p><p>20'. . . Control module</p><p>3. . . desk lamp</p><p>3'. . . Second light emitting diode</p><p>31. . . lampshade</p><p>32. . . Base</p><p>33. . . Power plug</p><p>4. . . flashlight</p><p>4'. . . Warm white light</p><p>41. . . Hood</p><p>5'. . . Cold white light</p><p>6'. . . Output light</p><p>I. . . Battery</p><p>I_A. . . First drive current</p><p>I_B. . . Second drive current</p><p>Rw. . . Variable resistor</p>

The first figure is a structural diagram of a conventional white light illuminating device with adjustable color temperature;

The second figure is a structural diagram of a control module of a conventional white light illuminating device with adjustable color temperature;

The third figure is a structural diagram of a lighting device with adjustable color temperature according to the present invention;

The fourth diagram A is the first structure diagram of a light-emitting element array module of the lighting device with adjustable color temperature;

The fourth diagram B is the second structure diagram of the light-emitting element array module of the lighting device with adjustable color temperature;

The fifth figure is a structural diagram of a main control unit of the lighting device with adjustable color temperature;

Figures 6A and 6B are examples of table lamp applications that can adjust the color temperature of a lighting device;

The seventh picture is an application example of a lighting device with adjustable color temperature;

The eighth figure is the third structural diagram of the light-emitting element array module of the lighting device with adjustable color temperature;

The ninth figure is a second structural diagram of the lighting device with adjustable color temperature of the present invention; and

The tenth figure is the second structural diagram of the main control unit of the lighting device with adjustable color temperature.