TWM505767U

TWM505767U - Lighting device and driving module

Info

Publication number: TWM505767U
Application number: TW104203105U
Authority: TW
Inventors: Thi-Ing Liou; Ming-Nan Yen
Original assignee: Megawin Technology Co Ltd
Priority date: 2015-03-03
Filing date: 2015-03-03
Publication date: 2015-07-21

Description

一種照明裝置及其驅動模組Lighting device and driving module thereof

本創作是有關一種照明裝置及其驅動模組，特別是一種可切換色溫之照明裝置及其驅動模組。The present invention relates to a lighting device and a driving module thereof, in particular to a lighting device capable of switching color temperature and a driving module thereof.

照明裝置是文明生活中不可或缺的產品，提供使用者活動所需的光線。隨著活動性質的不同，使用者所需光線的色溫也不相同，例如在客廳閱讀時可能需要明亮且冷白色溫的光線，而在客廳休息時則可能需要柔和且暖白色溫的光線。亦即，同一個空間下，常常需要切換不同色溫的光線，以滿足使用者的不同需求。習知的一種具有切換色溫功能的照明裝置，通常在消費者安裝時，還需另外搭配其專用的控制開關、甚至需要變更原有線路及裝潢，而無法使用傳統的壁面開關加以控制，例如一種簡單的二段式開關。此外，通常一個開關需控制一個照明區域中的多個照明裝置，因此必須要求同一照明區域中的多個照明裝置，在同一控制開關的切換控制下能同步切換至相同的色溫。Illumination devices are an indispensable product in a civilized life, providing the light needed for user activities. Depending on the nature of the activity, the color temperature of the light required by the user is different. For example, bright and cool white warm light may be required when reading in the living room, while soft and warm white warm light may be required when resting in the living room. That is to say, in the same space, it is often necessary to switch the light of different color temperatures to meet the different needs of users. A conventional lighting device with a function of switching color temperature is usually installed with a special control switch or even a need to change the original line and decoration when the consumer installs, and cannot be controlled by a conventional wall switch, for example, Simple two-stage switch. In addition, usually one switch needs to control a plurality of illumination devices in one illumination area, so it is necessary to require a plurality of illumination devices in the same illumination area to be synchronously switched to the same color temperature under the switching control of the same control switch.

綜上所述，如何提供一種可利用傳統二段式開關切換色溫的照明裝置及其驅動模組便是目前極需努力的目標。In summary, how to provide a lighting device and its driving module that can switch the color temperature using the traditional two-stage switch is the goal that is currently in great demand.

本創作提供一種照明裝置及其驅動模組，其是利用一控制單元依據一二段式開關兩次切換間之一斷電時間產生多個控制訊號控制多個發光二極體至少其中之一照明狀態，以切換發光模組之一混合色溫。The present invention provides a lighting device and a driving module thereof, which utilizes a control unit to generate a plurality of control signals to control at least one of the plurality of light-emitting diodes according to a power-off time between two switches of two-stage switches. State to switch the color temperature of one of the lighting modules.

本創作一實施例之一種照明裝置，其電性連接至一交流電。照明裝置包含一發光模組以及一驅動模組。發光模組包含相互並聯且具有相異色溫之多個發光二極體。驅動模組包含一偵測單元、一振盪單元以及一控制單元。偵測單元係用以偵測交流電之一頻率。振盪單元與偵測單元電性連接，用以產生一時脈，其中振盪單元依據頻率校正時脈。控制單元與振盪單元電性連接，並依據一二段式開關兩次切換間之一斷電時間產生多個控制訊號控制多個發光二極體至少其中之一照明狀態，以切換發光模組之一混合色溫。A lighting device according to an embodiment of the present invention is electrically connected to an alternating current. The lighting device comprises a lighting module and a driving module. The light emitting module includes a plurality of light emitting diodes connected in parallel and having different color temperatures. The driving module comprises a detecting unit, an oscillating unit and a control unit. The detection unit is used to detect one frequency of the alternating current. The oscillating unit is electrically connected to the detecting unit to generate a clock, wherein the oscillating unit corrects the clock according to the frequency. The control unit is electrically connected to the oscillating unit, and generates a plurality of control signals to control at least one of the plurality of illuminating diodes according to a power-off time between the two switches of the two-stage switch to switch the illuminating module. A mixed color temperature.

本創作另一實施例之一種驅動模組，用以驅動一交流電照明裝置之一發光模組，其中，發光模組具有相互並聯且相異色溫之多個發光二極體。驅動模組具有一偵測單元、一振盪單元以及一控制單元。偵測單元用以偵測交流電之一頻率。振盪單元與偵測單元電性連接，用以產生一時脈，其中振盪單元依據頻率校正時脈。控制單元與振盪單元電性連接，並依據一二段式開關兩次切換間之一斷電時間產生多個控制訊號控制多個發光二極體至少其中之一照明狀態，以切換發光模組之一混合色溫。A driving module of another embodiment of the present invention is configured to drive a light emitting module of an alternating current lighting device, wherein the light emitting module has a plurality of light emitting diodes connected in parallel and at different color temperatures. The driving module has a detecting unit, an oscillating unit and a control unit. The detecting unit is configured to detect one frequency of the alternating current. The oscillating unit is electrically connected to the detecting unit to generate a clock, wherein the oscillating unit corrects the clock according to the frequency. The control unit is electrically connected to the oscillating unit, and generates a plurality of control signals to control at least one of the plurality of illuminating diodes according to a power-off time between the two switches of the two-stage switch to switch the illuminating module. A mixed color temperature.

以下藉由具體實施例配合所附的圖式詳加說明，當更容易瞭解本創作之目的、技術內容、特點及其所達成之功效。In the following, the specific embodiments and the accompanying drawings are explained in detail, and it is easier to understand the purpose, technical content, characteristics and effects achieved by the present invention.

本創作之一實施例之照明裝置包含一驅動模組以及一發光模組，照明裝置電性是由一交流電驅動以提供照明。請參照圖1，於一實施例中，照明裝置包含一驅動模組10、一發光模組20以及一整流單元30。其中整流單元30電性連接至交流電AC，用以將交流電AC轉換為一直流電(未圖式)，以驅動發光模組20。發光模組20包含相互並聯且具有相異色溫之多個發光二極體22、24。舉例而言，發光模組20是由一具有冷白色溫之發光二極體以及一具有暖白色溫之發光二極體相互並聯所組成，或發光模組20是由一紅色發光二極體、一綠色發光二極體以及一藍色發光二極體三者相互並聯所組成。The lighting device of one embodiment of the present invention comprises a driving module and a lighting module, and the lighting device is electrically driven by an alternating current to provide illumination. Referring to FIG. 1 , in an embodiment, the illumination device includes a driving module 10 , a lighting module 20 , and a rectifying unit 30 . The rectifying unit 30 is electrically connected to the alternating current AC for converting the alternating current AC into a direct current (not shown) to drive the light emitting module 20 . The light-emitting module 20 includes a plurality of light-emitting diodes 22, 24 that are connected in parallel with each other and have different color temperatures. For example, the light-emitting module 20 is composed of a light-emitting diode having a cool white temperature and a light-emitting diode having a warm white temperature, or the light-emitting module 20 is composed of a red light-emitting diode. A green light-emitting diode and a blue light-emitting diode are formed in parallel with each other.

請一併參照圖1及圖2，驅動模組10包含一偵測單元12、一振盪單元14以及一控制單元16。藉由偵測節點P4之一電訊號，偵測單元12可偵測得相應之交流電AC之一頻率F。舉例而言，偵測單元12偵測P4之電訊號，即可得知一市電之頻率為60赫茲。振盪單元14與偵測單元12電性連接，用以產生一時脈CK，且振盪單元14依據頻率F校正時脈CK。控制單元16與振盪單元14電性連接，用以計算一二段式開關SW兩次切換間之一斷電時間。Referring to FIG. 1 and FIG. 2 , the driving module 10 includes a detecting unit 12 , an oscillating unit 14 and a control unit 16 . By detecting one of the electrical signals of the node P4, the detecting unit 12 can detect a frequency F of the corresponding alternating current AC. For example, the detecting unit 12 detects the electrical signal of the P4, and can know that the frequency of a commercial power is 60 Hz. The oscillating unit 14 is electrically connected to the detecting unit 12 for generating a clock CK, and the oscillating unit 14 corrects the clock CK according to the frequency F. The control unit 16 is electrically connected to the oscillating unit 14 for calculating a power-off time between two switchings of the two-stage switch SW.

特別的是，藉由偵測單元12以及振盪單元14之組合，在同一照明區域中受同一二段式開關SW電性控制之多個照明裝置，將可利用市電之交流頻率作為校正基準，同步校正每一照明裝置之振盪單元所產生之時脈。藉此電路架構，每一照明裝置之控制單元將可準確地計算二段式開關SW兩次切換間之斷電時間，而不受不同照明裝置間之產品變異影響，可達到同步控制多個照明裝置的效果。於一實施例中，驅動模組10更包含一電容C，用以在斷電時間提供驅動模組10操作所需之一電力。In particular, by using a combination of the detecting unit 12 and the oscillating unit 14, a plurality of illuminating devices electrically controlled by the same two-stage switch SW in the same illumination area can use the AC frequency of the commercial power as a calibration reference. The clock generated by the oscillating unit of each illuminating device is synchronously corrected. With this circuit architecture, the control unit of each lighting device can accurately calculate the power-off time between two switches of the two-stage switch SW, without being affected by product variations between different lighting devices, and can simultaneously control multiple lightings. The effect of the device. In one embodiment, the driving module 10 further includes a capacitor C for providing one of the power required for the operation of the driving module 10 during the power-off time.

請一併參照圖2及圖3，控制單元16依據一二段式開關SW兩次切換間之一斷電時間，產生多個控制訊號A1、A2，控制多個發光二極體22、24至少其中之一照明狀態，以切換發光模組20之一混合色溫。需說明的是，二段式開關SW兩次切換間之一斷電時間為，使用者在開啟狀態下，先關閉接著再次開啟二段式開關SW之操作過程中關閉二段式開關SW之時間長度。於一實施例中，控制單元16在斷電時間大於一特定時間，控制照明狀態切換至一預設照明狀態；以及在斷電時間小於一特定時間，控制照明狀態切換至一設定照明狀態。舉例而言，控制單元16在斷電時間大於3秒，產生二個控制訊號A1、A2，以控制冷白發光二極體22及暖白發光二極體24之輸入電流I22、I24大小分別為0 mA及40 mA，使發光模組產生暖白色光；控制單元16在斷電時間小於3秒，產生二個控制訊號A1、A2，以控制冷白發光二極體22及暖白發光二極體24之輸入電流I22、I24大小分別為40 mA及0 mA，使發光模組產生冷白色光。Referring to FIG. 2 and FIG. 3 together, the control unit 16 generates a plurality of control signals A1 and A2 according to a power-off time between two switches of the two-stage switch SW, and controls the plurality of light-emitting diodes 22 and 24 to at least One of the illumination states is to switch the color temperature of one of the illumination modules 20. It should be noted that the power-off time between the two-switch SW switching is the time when the user turns off the two-stage switch SW during the operation of turning off the two-stage switch SW in the open state. length. In an embodiment, the control unit 16 controls the illumination state to switch to a preset illumination state when the power-off time is greater than a specific time; and controls the illumination state to switch to a set illumination state when the power-off time is less than a specific time. For example, the control unit 16 generates two control signals A1 and A2 when the power-off time is greater than 3 seconds, so as to control the input currents I22 and I24 of the cool white LEDs 22 and the warm white LEDs 24 respectively. 0 mA and 40 mA, the light-emitting module generates warm white light; the control unit 16 generates two control signals A1 and A2 during the power-off time of less than 3 seconds to control the cool white light-emitting diode 22 and the warm white light-emitting diode The input currents I22 and I24 of the body 24 are 40 mA and 0 mA, respectively, so that the light-emitting module produces cool white light.

可以理解的是，控制單元16更在下一次斷電時間小於3秒，產生二個控制訊號A1、A2，以控制冷白發光二極體22及暖白發光二極體24之輸入電流I22、I24大小分別為20 mA及20 mA，使發光模組產生自然白光。亦即，冷白發光二極體22及暖白發光二極體24之照明狀態包含一預設照明狀態、一第一設定照明狀態以及一第二設定照明狀態，但不以此為限。於一實施例中，控制單元16依據斷電時間，控制發光二極體22、24之輸入電流I22、I24大小，使發光二極體22、24在不同照明狀態之輸入電流之總合相等，以維持發光模組之消耗功率不變。於另一實施例中，發光二極體之照明狀態亦可包含紅光、綠光以及藍光等不同的預設照明狀態以及設定照明狀態，但不以此為限。It can be understood that the control unit 16 generates two control signals A1 and A2 at the next power-off time of less than 3 seconds to control the input currents I22 and I24 of the cool white LEDs 22 and the warm white LEDs 24. The size is 20 mA and 20 mA, respectively, so that the lighting module produces natural white light. That is, the illumination states of the cool white LEDs 22 and the warm white LEDs 24 include a predetermined illumination state, a first set illumination state, and a second set illumination state, but are not limited thereto. In an embodiment, the control unit 16 controls the input currents I22 and I24 of the LEDs 22 and 24 according to the power-off time, so that the sum of the input currents of the LEDs 22 and 24 in different illumination states is equal. In order to maintain the power consumption of the lighting module. In another embodiment, the illumination state of the LED may also include different preset illumination states such as red, green, and blue light, and set illumination states, but not limited thereto.

請參照圖4，以下說明本創作一實施例之驅動模組之操作情形。控制單元16依據斷電時間，產生多個控制訊號A1、A2控制多個發光二極體之照明狀態。於本實施例中，控制訊號A1、A2為包含二字元的數位訊號，例如A1＜00＞、A1＜01＞、A＜10＞、A＜11＞示意對應不同照明狀態之控制訊號A1。於圖3之實施例中，控制訊號A1＜00＞控制發光二極體22之輸入電流I22為0 mA，控制訊號A1＜01＞控制發光二極體22之輸入電流I22為40 mA，控制訊號A1＜1x＞控制發光二極體22之輸入電流I22為20 mA，為了方便說明，在此將控制訊號A1＜10＞或A1＜11＞縮寫為控制訊號A1＜1x＞。依此類推，控制訊號A2亦同，在此不再贅述。Referring to FIG. 4, the operation of the driving module of an embodiment of the present invention will be described below. The control unit 16 generates a plurality of control signals A1 and A2 to control the illumination states of the plurality of light-emitting diodes according to the power-off time. In this embodiment, the control signals A1 and A2 are digital signals including two characters, for example, A1<00>, A1<01>, A<10>, and A<11> indicate control signals A1 corresponding to different illumination states. In the embodiment of FIG. 3, the control signal A1<00> controls the input current I22 of the LED 22 to be 0 mA, and the control signal A1<01> controls the input current I22 of the LED 22 to be 40 mA, and the control signal is controlled. A1<1x> controls the input current I22 of the LED 22 to be 20 mA. For convenience of explanation, the control signal A1<10> or A1<11> is abbreviated as the control signal A1<1x>. And so on, the control signal A2 is also the same, and will not be described here.

接續上述說明，首先，經由二段式開關開啟電源後，控制單元16產生控制訊號A1＜00＞、A2＜00＞，控制發光二極體單元22、24之照明狀態為一預設照明狀態；接著，控制單元16在斷電時間小於3秒，產生控制訊號A1＜01＞、A2＜01＞，控制發光二極體單元22、24之照明狀態為一第一設定照明狀態；再次，控制單元16在斷電時間小於3秒，產生控制訊號A1＜1x＞、A2＜1x＞，控制發光二極體單元22、24之照明狀態為一第二設定照明狀態；最後，關閉後再開啟開關，將使發光模組之照明狀態回復至原預設照明狀態。Following the above description, first, after the power is turned on by the two-stage switch, the control unit 16 generates control signals A1<00> and A2<00>, and controls the illumination states of the LED units 22 and 24 to be a preset illumination state; Then, the control unit 16 generates the control signals A1<01> and A2<01> when the power-off time is less than 3 seconds, and controls the illumination states of the LED units 22 and 24 to be a first set illumination state; again, the control unit 16 when the power-off time is less than 3 seconds, generating control signals A1<1x>, A2<1x>, controlling the illumination state of the LED units 22, 24 to be a second set illumination state; finally, turning the switch on after turning off, The illumination state of the illumination module will be restored to the original preset illumination state.

綜合上述，本創作之照明裝置及其驅動模組是利用一控制單元依據一二段式開關兩次切換間之一斷電時間，產生多個控制訊號，控制多個發光二極體至少其中之一照明狀態，以切換發光模組之一混合色溫。此外，藉由偵測單元以及振盪單元之組合，在同一照明區域中受同一二段式開關電性控制之多個照明裝置，將可利用市電之交流頻率作為校正基準，同步校正每一照明裝置之振盪單元所產生之時脈。每一照明裝置之控制單元將可準確地計算二段式開關兩次切換間之斷電時間，以達到同步控制多個照明裝置的效果。In summary, the lighting device and the driving module thereof of the present invention use a control unit to generate a plurality of control signals according to a power-off time between two switchings of a two-stage switch, and control at least one of the plurality of light-emitting diodes. An illumination state to switch the color temperature of one of the illumination modules. In addition, by using a combination of the detecting unit and the oscillating unit, a plurality of illuminating devices electrically controlled by the same two-stage switch in the same illumination area can use the AC frequency of the commercial power as a calibration reference to simultaneously correct each illumination. The clock generated by the oscillating unit of the device. The control unit of each lighting device will accurately calculate the power-off time between two switches of the two-stage switch to achieve the effect of synchronously controlling a plurality of lighting devices.

以上所述之實施例僅是為說明本創作之技術思想及特點，其目的在使熟習此項技藝之人士能夠瞭解本創作之內容並據以實施，當不能以之限定本創作之專利範圍，即大凡依本創作所揭示之精神所作之均等變化或修飾，仍應涵蓋在本創作之專利範圍內。The embodiments described above are only for explaining the technical idea and characteristics of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement them according to the scope of the patent. That is, the equivalent changes or modifications made by the people in accordance with the spirit revealed by this creation should still be covered by the scope of the patent of this creation.

10‧‧‧驅動模組
12‧‧‧偵測單元
14‧‧‧振盪單元
16‧‧‧控制單元
20‧‧‧發光模組
22、24‧‧‧發光二極體
30‧‧‧整流單元
AC‧‧‧交流電
A1、A2‧‧‧控制訊號
C‧‧‧電容
CK‧‧‧時脈
F‧‧‧頻率
I22、I24‧‧‧電流
P1~P6、Vin‧‧‧節點10‧‧‧Drive Module
12‧‧‧Detection unit
14‧‧‧Oscillation unit
16‧‧‧Control unit
20‧‧‧Lighting module
22, 24‧‧‧Lighting diode
30‧‧‧Rectifier unit
AC‧‧‧AC
A1, A2‧‧‧ control signals
C‧‧‧ capacitor
CK‧‧‧ clock
F‧‧‧frequency
I22, I24‧‧‧ current
P1~P6, Vin‧‧‧ nodes

圖1為一方塊圖，顯示本創作一實施例之照明裝置。圖2為一方塊圖，顯示本創作一實施例之驅動模組。圖3為一示意圖，顯示本創作一實施例之驅動模組之多個控制訊號。圖4為一流程圖，顯示本創作一實施例之驅動模組控制一發光模組之照明狀態。1 is a block diagram showing a lighting device of an embodiment of the present invention. 2 is a block diagram showing a driving module of an embodiment of the present invention. FIG. 3 is a schematic diagram showing a plurality of control signals of the driving module of an embodiment of the present invention. 4 is a flow chart showing the driving state of an illumination module controlled by a driving module according to an embodiment of the present invention.

10‧‧‧驅動模組10‧‧‧Drive Module

12‧‧‧偵測單元12‧‧‧Detection unit

14‧‧‧振盪單元14‧‧‧Oscillation unit

16‧‧‧控制單元16‧‧‧Control unit

A1、A2‧‧‧控制訊號A1, A2‧‧‧ control signals

P1、P2、P4‧‧‧節點P1, P2, P4‧‧‧ nodes

Claims

一種照明裝置，其是由一交流電驅動以提供照明，該照明裝置包含：一發光模組，其包含相互並聯且具有相異色溫之多個發光二極體；以及一驅動模組，其包含：一偵測單元，用以偵測該交流電之一頻率；一振盪單元，其與該偵測單元電性連接，用以產生一時脈，其中該振盪單元依據該頻率校正該時脈；以及一控制單元，其與該振盪單元電性連接，並依據一二段式開關兩次切換間之一斷電時間產生多個控制訊號控制該多個發光二極體至少其中之一照明狀態，以切換該發光模組之一混合色溫。 A lighting device is driven by an alternating current to provide illumination, the lighting device comprising: a lighting module comprising a plurality of light emitting diodes connected in parallel with different color temperatures; and a driving module comprising: a detecting unit for detecting a frequency of the alternating current; an oscillating unit electrically connected to the detecting unit for generating a clock, wherein the oscillating unit corrects the clock according to the frequency; and a control a unit electrically connected to the oscillating unit, and generating a plurality of control signals to control at least one of the plurality of illuminating diodes according to a power-off time between two switches of the two-stage switch to switch the One of the lighting modules mixes the color temperature.

如請求項1所述之照明裝置，更包含一電容，用以在該斷電時間提供該驅動模組操作所需之一電力。 The lighting device of claim 1, further comprising a capacitor for providing power required for operation of the driving module during the power-off time.

如請求項1所述之照明裝置，其中該驅動模組更包含一整流單元，其電性連接至該交流電，用以將該交流電轉換為一直流電，以驅動該發光模組。 The lighting device of claim 1, wherein the driving module further comprises a rectifying unit electrically connected to the alternating current for converting the alternating current into a direct current to drive the lighting module.

如請求項1所述之照明裝置，其中該控制單元更在該斷電時間大於一特定時間，控制該照明狀態切換至一預設照明狀態，以及在該斷電時間小於一特定時間，控制該照明狀態切換至一設定照明狀態。 The lighting device of claim 1, wherein the control unit further controls the lighting state to switch to a predetermined lighting state when the power-off time is greater than a specific time, and controls the lighting time to be less than a specific time. The illumination state is switched to a set illumination state.

如請求項4所述之照明裝置，其中該控制單元依據該斷電時間，產生該多個控制訊號，以控制每一該發光二極體之輸入電流，使該多個發光二極體在不同照明狀態之輸入電流之總合相等。 The lighting device of claim 4, wherein the control unit generates the plurality of control signals according to the power-off time to control an input current of each of the light-emitting diodes, so that the plurality of light-emitting diodes are different The sum of the input currents in the illumination state is equal.

一種驅動模組，用以驅動一交流電照明裝置之一發光模組，其中該發光模組具有相互並聯且相異色溫之多個發光二極體，該驅動模組包含：一偵測單元，用以偵測該交流電之一頻率；一振盪單元，其與該偵測單元電性連接，用以產生一時脈，其中該振盪單元依據該頻率校正該時脈；以及一控制單元，其與該振盪單元電性連接，並依據一二段式開關兩次切換間之一斷電時間產生多個控制訊號控制該多個發光二極體至少其中之一照明狀態，以切換該發光模組之一混合色溫。 A driving module for driving an illuminating module of an ac lighting device, wherein the illuminating module has a plurality of illuminating diodes connected in parallel and different color temperatures, the driving module comprises: a detecting unit, Detecting a frequency of the alternating current; an oscillating unit electrically connected to the detecting unit for generating a clock, wherein the oscillating unit corrects the clock according to the frequency; and a control unit, and the oscillating The unit is electrically connected, and generates a plurality of control signals according to a power-off time between the two switches of the two-stage switch to control at least one of the illumination states of the plurality of light-emitting diodes to switch one of the illumination modules to be mixed. Color temperature.

如請求項6所述之驅動模組，更包含一電容，用以在該斷電時間提供該驅動模組操作所需之一電力。 The driving module of claim 6, further comprising a capacitor for providing one of the power required for the operation of the driving module during the power-off time.

如請求項6所述之驅動模組，更包含一整流單元，其電性連接至該交流電，用以將該交流電轉換為一直流電，以驅動該發光模組。 The driving module of claim 6, further comprising a rectifying unit electrically connected to the alternating current for converting the alternating current into a direct current to drive the lighting module.

如請求項6所述之驅動模組，其中該控制單元更在該斷電時間大於一特定時間，控制該照明狀態切換至一預設照明狀態，以及在該斷電時間小於一特定時間，控制該照明狀態切換至一設定照明狀態。 The driving module of claim 6, wherein the control unit further controls the lighting state to switch to a predetermined lighting state when the power-off time is greater than a specific time, and controls the power-off time to be less than a specific time. The illumination state is switched to a set illumination state.

如請求項9所述之驅動模組，其中該控制單元依據該斷電時間，產生該多個控制訊號，以控制每一該發光二極體之輸入電流，使該多個發光二極體在不同照明狀態之輸入電流之總合相等。 The driving module of claim 9, wherein the control unit generates the plurality of control signals according to the power-off time to control an input current of each of the light-emitting diodes, so that the plurality of light-emitting diodes are The sum of the input currents of different illumination states is equal.