Lamp panel device

Abstract

The invention relates to a lamp panel device which comprises a first cluster light-emitting unit, a second cluster light-emitting unit and a lamp panel control unit. The lamp panel control unit sequentially generates and outputs a first cluster control signal and a second cluster control signal to the first cluster light-emitting unit and the second cluster light-emitting unit so as to control the first cluster light-emitting unit to emit light in a first time period and control the second cluster light-emitting unit to emit light in a second time period. The lamp panel device enables the first cluster of light-emitting units and the second cluster of light-emitting units to alternately emit light during the persistence of vision of eyes in a time-sharing light-emitting mode. Therefore, the human eye vision can feel the common lighting effect emitted by the first cluster of light-emitting units and the second cluster of light-emitting units at any time without reducing the brightness, and the heat dissipation problem caused by the simultaneous lighting of the first cluster of light-emitting units and the second cluster of light-emitting units can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to a light panel device, in particular, a light panel device capable of reducing heat. BACKGROUND

[0002] Generally, a light panel device is provided with an array of light emitting units, such as an array of light emitting diodes (LEDs). The array of LEDs is arranged in a matrix form on a light emitting surface of a light panel. A back surface of the light panel is provided with a heat dissipation device. Since the number of LEDs in the array of LEDs is as high as tens of thousands, the heat generated by the LEDs when emitting light is also quite substantial. The heat dissipation device provided on the back surface of the light panel is usually used to dissipate heat so as to avoid damage to the light panel device caused by excessively high temperature.

[0003] However, the heat dissipation method using the heat dissipation device has its limitations. For example, when the heat generated by the LEDs is too much or the light emitting time is too long, the heat dissipation device may not be able to dissipate heat in time, resulting in overheating. Therefore, another method is used to control the LEDs by pulse-width modulation (PWM) dimming, so that the LEDs emit light in sequence, thereby avoiding simultaneous light emission of the LEDs and reducing the heat generated by the LEDs, so as to reduce the temperature and avoid excessively high temperature. For example, when the duty cycle of the LEDs is controlled to be 50%, it means that the LEDs only emit light for 50% of the time in a time period. According to the principle of visual persistence, when the time period is less than a predetermined value, even if the LEDs do not emit light for 50% of the time, the human eye cannot perceive it, thereby providing lighting function and reducing heat generation at the same time.

[0004] However, the method of controlling the LEDs by dimming to reduce temperature in the prior art still has the problem of flickering, which affects the lighting effect, and therefore further improvement is needed. SUMMARY

[0005] In view of the above-mentioned problem that the method of controlling the LEDs by dimming to reduce temperature in the prior art may still cause flickering, which affects the lighting effect, the present application provides a novel light panel device. The light panel device comprises a plurality of first clusters of light emitting units, a plurality of second clusters of light emitting units, and a light panel control unit.

[0006] The lamp panel control unit is electrically connected to the first cluster of light emitting units and the second cluster of light emitting units. The lamp panel control unit sequentially generates and outputs a first cluster control signal and a second cluster control signal to the first cluster of light emitting units and the second cluster of light emitting units, so as to control the first cluster of light emitting units to emit light in a first time period, and control the second cluster of light emitting units to emit light in a second time period.

[0007] Since the lamp panel device of the present application has the first cluster of light emitting units and the second cluster of light emitting units, and the first cluster of light emitting units emits light in the first time period and does not emit light in the second time period, while the second cluster of light emitting units emits light in the second time period and does not emit light in the first time period, the lamp panel device can make the first cluster of light emitting units and the second cluster of light emitting units emit light alternately by time-sharing light emission. In this way, there is always light emitting unit emitting light at any time, and there is no completely dark time. Therefore, the user cannot perceive that the light emitted by the lamp panel device has a flickering state, thereby making the lighting effect not affected, and providing good lighting effect. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 FIG. 1 is a side view of the lamp panel device of the present application.

[0009] Figure 2 FIG. 4 is a block diagram of the lamp panel device of the present application.

[0010] Figure 3 FIG. 5 is a top view of the lamp panel device of the present application.

[0011] Figure 4A FIG. 6 is a light emitting state diagram of the first embodiment of the lamp panel device of the present application. Figure 4B

[0012] FIG. 7 is a control signal waveform diagram of the first embodiment of the lamp panel device of the present application. Figure 5A Figure 5B FIG. 8 is a light emitting state diagram of the second embodiment of the lamp panel device of the present application.

[0013] Figures 6A to 6C FIG. 9 is a control signal waveform diagram of the second embodiment of the lamp panel device of the present application.

[0014] DETAILED DESCRIPTION Figures 7A to 7C Please refer to and

[0015] The lamp panel device 10 of the present application includes a first cluster of light emitting units 101, a second cluster of light emitting units 102, and a lamp panel control unit 11. Figure 1 Figure 2 The lamp panel device 10 of the present application includes a first cluster of light emitting units 101, a second cluster of light emitting units 102, and a lamp panel control unit 11.

[0016] ​The lamp panel control unit 11 is electrically connected to the first cluster light emitting units 101 and the second cluster light emitting units 102. The lamp panel control unit 11 sequentially generates and outputs a first cluster control signal and a second cluster control signal to the first cluster light emitting units 101 and the second cluster light emitting units 102, so as to control the first cluster light emitting units 101 to emit light in a first time period, and control the second cluster light emitting units 102 to emit light in a second time period.

[0017] Since the lamp panel device 10 of the present application has the first cluster light emitting units 101 and the second cluster light emitting units 102, and the first cluster light emitting units 101 emit light in the first time period and do not emit light in the second time period, while the second cluster light emitting units 102 emit light in the second time period and do not emit light in the first time period, the lamp panel device 10 can make the first cluster light emitting units 101 and the second cluster light emitting units 102 emit light alternately by means of time-sharing light emission. In this way, light emitting units will emit light at any time, and there will be no completely dark time. Therefore, the user cannot perceive that the light emitted by the lamp panel device has a flickering state, thereby making the illumination effect not be affected, and providing a good illumination effect.

[0018] In the present embodiment, the lamp panel control unit 11 is electrically connected to the first cluster light emitting units 101 and the second cluster light emitting units 102 through an internal integrated circuit bus (I 2 CBus), a controller area network bus (CAN Bus), or an Ethernet (Ethernet).

[0019] The lamp panel device 10 further comprises a lamp panel 12, a heat dissipation unit 13, and a power supply unit 14. The lamp panel 12 has an opposite light emitting surface 121 and a light emitting back surface 122. As shown in Figure 1 The heat dissipation unit 13 is arranged on the light emitting back surface 122 of the lamp panel 12. Preferably, the heat dissipation unit 13 is a heat dissipation fin or a metal heat dissipation block. The power supply unit 14 is electrically connected to and supplies power to the lamp panel control unit 11, the first cluster light emitting units 101, and the second cluster light emitting units 102.

[0020] Please refer to Figure 3 In the present embodiment, the first cluster light emitting units 101 and the second cluster light emitting units 102 are arranged in a matrix form on the light emitting surface 121 of the lamp panel 12, and the first cluster light emitting units 101 and the second cluster light emitting units 102 are arranged alternately.

[0021] Please refer to Figure 4A , Figure 4B and Figure 5A , Figure 5BAs shown, for example, Figure 4A As shown, when the lamp panel control unit 11 generates and outputs the first cluster control signal to the plurality of first cluster light-emitting units 101, the plurality of first cluster light-emitting units 101 emit light during the first time period. Figure 5A As shown, Figure 5A The waveform diagram shows the first cluster control signal, which is generated during several first time periods and output to several first cluster light-emitting units 101, causing the several first cluster light-emitting units 101 to emit light during the several first time periods. The first time period is, for example, from a start time t0 to a first time t1, or from a second time t2 to a third time t3.

[0022] Furthermore, such as Figure 4B As shown, when the lamp panel control unit 11 generates and outputs the second cluster control signal to the plurality of second cluster light-emitting units 102, the plurality of second cluster light-emitting units 102 emit light during the second time period. Figure 5B As shown, Figure 5B The waveform diagram shows the second cluster control signal, which is generated during the plurality of second time periods and output to the plurality of second cluster light-emitting units 102, causing the plurality of second cluster light-emitting units 102 to emit light during the plurality of second time periods. The second time period is, for example, from the first time t1 to the second time t2, or from the third time t3 to a fourth time t4.

[0023] In addition, such as Figure 5A and Figure 5B As shown, the first time periods and the second time periods are consecutive. That is, the moment the first clusters of light-emitting units 101 stop emitting light, the second clusters of light-emitting units 102 immediately take over emitting light, without any gaps in between. In this way, the light panel device 10 will always have light-emitting units emitting light, and there will never be a moment when it is completely dark.

[0024] Furthermore, the first time periods and the second time periods do not overlap. When the first clusters of light-emitting units 101 emit light, the second clusters of light-emitting units 102 do not emit light. Conversely, when the second clusters of light-emitting units 102 emit light, the first clusters of light-emitting units 101 do not emit light. In other words, the first clusters of light-emitting units 101 and the second clusters of light-emitting units 102 will not emit light simultaneously. As a result, the total current flowing through the first clusters of light-emitting units 101 and the second clusters of light-emitting units 102 can be limited. For example, at any given time, only the current flows through the first clusters of light-emitting units 101, or only the current flows through the second clusters of light-emitting units 102; there will not be a large current flowing through both the first clusters of light-emitting units 101 and the second clusters of light-emitting units 102 simultaneously.

[0025] For example, if the total current limiting condition is 10 amperes (A), and the number of each of the first cluster light-emitting units 101 and the second cluster light-emitting units 102 is 1000, then if all the first cluster light-emitting units 101 and the second cluster light-emitting units 102 need to emit light simultaneously, the current limiting for a single light-emitting unit is 5 milliamperes (mA). However, if only the first cluster light-emitting units 101 or only the second cluster light-emitting units 102 need to emit light simultaneously, the current limiting for a single light-emitting unit is 10 milliamperes. In this way, the current limiting for a single light-emitting unit can be significantly improved, and the current value through the light-emitting unit is positively correlated with its luminous brightness; that is, the larger the current value through the light-emitting unit, the higher the brightness of the light-emitting unit.

[0026] Therefore, under the same current-limiting conditions, the current through the plurality of first cluster light-emitting units 101 and the plurality of second cluster light-emitting units 102 can be increased, thereby improving the luminous brightness of the plurality of first cluster light-emitting units 101 and the plurality of second cluster light-emitting units 102, and thus achieving the effect of improving the luminous brightness of the lamp panel device 10. In this embodiment, the first luminous current I1 of each first cluster light-emitting unit 101 when emitting light is greater than or equal to 1.4 mA, and the second luminous current I2 of each second cluster light-emitting unit 102 when emitting light is greater than or equal to 1.4 mA.

[0027] Furthermore, in this embodiment, the first time period is less than or equal to 30 milliseconds (ms), and the second time period is less than or equal to 30 milliseconds. Thus, through the principle of visual persistence, even if the plurality of first clusters of light-emitting units 101 or the plurality of second clusters of light-emitting units 102 flicker, the human eye cannot perceive it, thereby providing a better lighting effect.

[0028] Furthermore, each of the plurality of first cluster control signals generated by the lamp panel control unit 11 has a first address information, and the plurality of first cluster light-emitting units 101 also have the first address information. When the plurality of first cluster light-emitting units 101 receive a control signal, the plurality of first cluster light-emitting units 101 determine whether the control signal contains the first address information. When the control signal contains the first address information, the plurality of first cluster light-emitting units 101 respond to the control signal; when the control signal does not contain the first address information, the plurality of first cluster light-emitting units 101 do not respond to the control signal.

[0029] Furthermore, the plurality of second cluster control signals generated by the lamp panel control unit 11 each have a second address information, and the plurality of second cluster light-emitting units 102 also have the second address information. When the plurality of second cluster light-emitting units 102 receive the control signal, the plurality of second cluster light-emitting units 102 determine whether the control signal contains the second address information. When the control signal contains the second address information, the plurality of second cluster light-emitting units 102 respond to the control signal. When the control signal does not contain the second address information, the plurality of second cluster light-emitting units 102 do not respond to the control signal.

[0030] Please see Figure 2 and Figure 3 As shown, the lamp panel device 10 further includes several third cluster light-emitting units 103. The lamp panel control unit 11 is further electrically connected to the several third cluster light-emitting units 103. The lamp panel control unit 11 sequentially generates and outputs the first cluster control signal, the second cluster control signal, and a third cluster control signal to the several first cluster light-emitting units 101, the several second cluster light-emitting units 102, and the several third cluster light-emitting units 103, so as to control the several first cluster light-emitting units 101 to emit light during the first time period, control the several second cluster light-emitting units 102 to emit light during the second time period, and control the several third cluster light-emitting units 103 to emit light during a third time period.

[0031] Please see Figures 6A to 6C and Figures 7A to 7C As shown, for example, Figure 6A As shown, when the lamp panel control unit 11 generates and outputs the first cluster control signal to the plurality of first cluster light-emitting units 101, the plurality of first cluster light-emitting units 101 emit light during the first time period. Figure 7A As shown, Figure 7A The waveform diagram shows the first cluster control signal, which is generated during several first time periods and output to several first cluster light-emitting units 101, causing the several first cluster light-emitting units 101 to emit light during the several first time periods. The first time period is, for example, from the start time t0 to the first time t1, or from the third time t3 to the fourth time t4.

[0032] Furthermore, such as Figure 6B As shown, when the lamp panel control unit 11 generates and outputs the second cluster control signal to the plurality of second cluster light-emitting units 102, the plurality of second cluster light-emitting units 102 emit light during the second time period. Figure 7B As shown, Figure 7BThe waveform diagram shows the second cluster control signal, which is generated during the plurality of second time periods and output to the plurality of second cluster light-emitting units 102, causing the plurality of second cluster light-emitting units 102 to emit light during the plurality of second time periods. The second time period is, for example, from the first time t1 to the second time t2, or from the fourth time t4 to the fifth time t5.

[0033] Furthermore, such as Figure 6C As shown, when the lamp panel control unit 11 generates and outputs the third cluster control signal to the plurality of third cluster light-emitting units 103, the plurality of third cluster light-emitting units 103 emit light during the third time period. Figure 7C As shown, Figure 7C The waveform diagram shows the control signal for the third cluster, which is generated during the plurality of third time periods and output to the plurality of third cluster light-emitting units 103, causing the plurality of third cluster light-emitting units 103 to emit light during the plurality of third time periods. The third time period is, for example, from the second time t2 to the third time t3, or from the fifth time t5 to the sixth time t6.

[0034] In addition, such as Figures 7A to 7C As shown, the first time period, the second time period, and the third time period are sequentially connected. That is, the moment the first clusters of light-emitting units 101 stop emitting light, the second clusters of light-emitting units 102 immediately begin emitting light, and the moment the second clusters of light-emitting units 102 stop emitting light, the third clusters of light-emitting units 103 immediately begin emitting light, without any gaps in between. In this way, the light panel device 10 always has light-emitting units emitting light, and there will never be a moment when it is completely dark.

[0035] Furthermore, the first time periods, the second time periods, and the third time periods do not overlap. That is, when the first clusters of light-emitting units 101 emit light, the second clusters of light-emitting units 102 and the third clusters of light-emitting units 103 do not emit light. Similarly, when the second clusters of light-emitting units 102 emit light, the first clusters of light-emitting units 101 and the third clusters of light-emitting units 103 do not emit light. And when the third clusters of light-emitting units 103 emit light, the first clusters of light-emitting units 101 and the second clusters of light-emitting units 102 do not emit light. Therefore, the first clusters of light-emitting units 101, the second clusters of light-emitting units 102, and the third clusters of light-emitting units 103 will not emit light simultaneously.

[0036] In this embodiment, each of the third cluster of light-emitting units 103 emits a third luminous current I3 greater than or equal to 1.4 mA. The third time period is less than or equal to 30 milliseconds.

[0037] Furthermore, the plurality of third cluster control signals generated by the lamp panel control unit 11 each have a third address information, and the plurality of third cluster light-emitting units 103 have the third address information. When the plurality of third cluster light-emitting units 103 receive the control signal, the plurality of third cluster light-emitting units 103 determine whether the control signal contains the third address information. When the control signal contains the third address information, the plurality of third cluster light-emitting units 103 respond to the control signal. When the control signal does not contain the third address information, the plurality of third cluster light-emitting units 103 do not respond to the control signal.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A lamp panel device, characterized in that, Includes: Several first clusters of light-emitting units; Several second clusters of light-emitting units; and A lamp panel control unit is electrically connected to the plurality of first cluster light-emitting units and the plurality of second cluster light-emitting units; The lamp panel control unit sequentially generates and outputs a first cluster control signal and a second cluster control signal to the plurality of first cluster light-emitting units and the plurality of second cluster light-emitting units, so as to control the plurality of first cluster light-emitting units to emit light in a first time period and control the plurality of second cluster light-emitting units to emit light in a second time period.

2. The lamp panel device as described in claim 1, characterized in that, The first time period and the second time period are consecutive.

3. The lamp panel device as described in claim 1, characterized in that, The first time period and the second time period do not overlap.

4. The lamp panel device as described in claim 1, characterized in that, The first cluster of light-emitting units and the second cluster of light-emitting units are arranged alternately.

5. The lamp panel device as described in claim 1, characterized in that, Each of the first cluster of light-emitting units emits a first luminous current greater than or equal to 1.4 mA, and each of the second clusters of light-emitting units emits a second luminous current greater than or equal to 1.4 mA.

6. The lamp panel device as described in claim 1, characterized in that, The first time period is less than or equal to 30 milliseconds, and the second time period is less than or equal to 30 milliseconds.

7. The lamp panel device as described in claim 1, characterized in that, The lamp panel control unit is electrically connected to the number of first cluster light-emitting units and the number of second cluster light-emitting units via an internal integrated circuit bus, a controller area network bus, or an Ethernet.

8. The lamp panel device as described in claim 1, characterized in that, The control signals of the first cluster generated by the lamp panel control unit each have a first address information, and the first cluster light-emitting units have the first address information; When the plurality of first cluster light-emitting units receive a control signal, the plurality of first cluster light-emitting units determine whether the control signal contains the first address information; When the control signal contains the first address information, the plurality of first cluster light-emitting units respond to the control signal; When the control signal does not contain the first address information, the plurality of first cluster light-emitting units do not respond to the control signal.

9. The lamp panel device as claimed in claim 1, characterized in that, The control signals of the second cluster generated by the lamp panel control unit each have a second address information, and the second cluster light-emitting units each have the second address information; When the plurality of second cluster light-emitting units receive a control signal, the plurality of second cluster light-emitting units determine whether the control signal contains the second address information; When the control signal contains the second address information, the plurality of second cluster light-emitting units respond to the control signal; When the control signal does not contain the second address information, the plurality of second cluster light-emitting units do not respond to the control signal.

10. The lamp panel device as claimed in claim 1, characterized in that, Further includes: Several third clusters of light-emitting units; The lamp panel control unit is further electrically connected to the plurality of third clusters of light-emitting units; The lamp panel control unit sequentially generates and outputs the first cluster control signal, the second cluster control signal, and a third cluster control signal to the plurality of first cluster light-emitting units, the plurality of second cluster light-emitting units, and the plurality of third cluster light-emitting units, so as to control the plurality of first cluster light-emitting units to emit light during the first time period, control the plurality of second cluster light-emitting units to emit light during the second time period, and control the plurality of third cluster light-emitting units to emit light during a third time period.

11. The lamp panel device as claimed in claim 1, characterized in that, Further includes: A light panel has a light-emitting surface and a light-emitting back surface; The plurality of first cluster light-emitting units and the plurality of second cluster light-emitting units are arranged in a matrix on the light-emitting surface of the lamp panel.

12. The lamp panel device as claimed in claim 11, characterized in that, Further includes: A heat dissipation unit is disposed on the back of the light-emitting panel.

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