TW201701722A - Light emitting diode lamp string driving system - Google Patents

Abstract

A light emitting diode lamp string driving system includes a plurality of light emitting diode driving apparatuses and a plurality of light emitting diode lamp strings. The light emitting diode lamp string includes a plurality of light emitting diodes. The light emitting diode driving apparatus includes a switch unit, a control unit and a voltage level generating unit. An anode of a last of the light emitting diodes of the light emitting diode lamp string connected to a first of the light emitting diode driving apparatuses is connected to the control unit of a second of the light emitting diode driving apparatuses.

Description

Light-emitting diode string drive system 【0001】

The present invention relates to a light string driving system, and more particularly to a light emitting diode light string driving system.

【0002】

At present, the light-emitting diode string system includes a light-emitting diode driving device and a light-emitting diode light string, and each of the light-emitting diode light strings has a plurality of light-emitting diodes connected in series with each other, in order to achieve the light-emitting diode light string. Synchronization or point control effect, each light-emitting diode connected to each light-emitting diode string has a certain address code, and the number of address codes of the light-emitting diodes electrically connected to each light string can be The number of the light-emitting diodes is the same or less. For example, when the number of light-emitting diodes of each light string is 24 lights, the address code of each light-emitting diode can be 1 to 24 or 1 to 8 The number is repeated; when the light-emitting operation is to be performed, the light-emitting diode driving device issues a control command to drive the light-emitting diode capable of interpreting the control command to perform the light-emitting flashing.

[0003]

Since each control command can only drive a certain address-coded LED, when the LED string has a large number of LEDs or has more address codes, it will control The writing of the commands is more complicated. Further, when the LEDs are assembled, if the installation order of the LEDs of a certain address is wrong, the whole group of LEDs will be regarded as bad, if The greater the number of light-emitting diodes to which each of the light-emitting diode strings is connected, the higher the defect rate.

[0004]

In order to improve the above disadvantages of the prior art, it is an object of the present invention to provide a light emitting diode string driving system.

[0005]

In order to achieve the above object of the present invention, a light emitting diode string driving system of the present invention comprises: a plurality of light emitting diode strings, each of the light emitting diode strings comprising a plurality of light emitting diodes connected in series with each other, Each of the light-emitting diodes has an address code; and a plurality of light-emitting diode driving devices, each of the light-emitting diode driving devices is electrically connected to each of the light-emitting diode strings. The illuminating diode driving device includes: a switching unit electrically connected to the LED string; a control unit having a plurality of illuminating patterns, the control unit being electrically connected to the switch unit; a bit generating unit, the voltage level generating unit is electrically connected to the output end of the driving device and the LED string; and a first signal transmission line is electrically connected to the first one of the LED driving devices One of the light-emitting diode strings is electrically connected to the anode of the light-emitting diode, and the other end is electrically connected to the control unit of the second light-emitting diode driving device. The control unit of the first LED driving device controls the opening and closing operation of the switching unit according to the selected lighting pattern, so that the voltage level generating unit generates a plurality of specific levels. a voltage, whereby the first LED driving device outputs a first control command to the electrically connected LED string, so that the LED corresponding to the first control command can be read Shining changes. The control unit of the first LED driving device transmits the first control command to the second LED driving device through the signal transmission line electrically connected to the first LED driving device. The control unit, when the control unit of the second LED driving device is capable of interpreting the received first control command, causing the second LED driving device to generate a second control command correspondingly In the light-emitting diode string that is electrically connected, the light-emitting diode corresponding to the second control command can be made to change in brightness.

[0006]

Furthermore, the LED light string driving system as described above, wherein the control unit of the first LED driving device comprises a first microprocessor, and the second LED driving device The control unit includes: a second signal conversion unit and a second microprocessor electrically connected to the first signal conversion unit, the signal transmission line is electrically connected to the second signal conversion unit, thereby receiving the received A control command performs voltage conversion and transmits to the second microprocessor.

【0007】

Furthermore, the LED light string driving system as described above further includes a second signal transmission line, and one end of the second signal transmission line is electrically connected to one of the second LED strings of the second LED string. The other end is electrically connected to the control unit of the third LED driving device, wherein the control unit of the third LED driving device comprises a third signal converting unit and a third microprocessor. The second signal transmission line is electrically connected to the third signal conversion unit, whereby the received second control command is voltage-converted and transmitted to the electrically connected third microprocessor.

[0008]

Furthermore, in the above-described LED driving system, the first control command has a first operation signal and a first illumination signal, and the first operation signal is interpreted by the second microprocessor. An illuminating signal is read by the first illuminating diodes electrically connected to the first illuminating diode driving device; the second control command has a second operating signal and a second illuminating signal, and the second operating signal is The third microprocessor interprets the second illuminating signal for reading by the second illuminating diodes electrically connected by the second illuminating diode driving device.

【0009】

Furthermore, in the above-mentioned LED light string driving system, the one end of the first signal transmission line is electrically connected to the first LED string in which the LED driving device is electrically connected. The last one of the light emitting diodes; one end of the second signal transmission line is electrically connected to the last one of the light emitting diodes electrically connected to the second light emitting diode driving device anode.

[0010]

Furthermore, in the above-described light-emitting diode string driving system, the first one of the light-emitting diode driving device and the second control unit of the light-emitting diode driving device controls the switching unit in a fixed frequency manner. The control unit generates the first control command and the second control command by changing the length of the on-time of the switch unit.

[0011]

Furthermore, in the above-described light-emitting diode string driving system, the first one of the light-emitting diode driving device and the second control unit of the light-emitting diode driving device are frequency-controlled to control the switching unit. The control unit generates the first control command and the second control command by changing a conduction frequency of the switch unit.

[0012]

Furthermore, the LED driving system of the LED as described above, wherein the LED driving device further comprises: a filtering unit electrically connected to the switching unit, the control unit and the voltage level generating And a rectifying unit electrically connected to the filtering unit.

[0013]

Furthermore, the LED driving system of the LED as described above, wherein the LED driving device further comprises: a memory unit electrically connected to the control unit and storing the control unit before being used for shutdown The last one of the illuminating styles.

[0014]

Furthermore, the LED light string driving system as described above, wherein the switching unit is a transistor switch; the memory unit is a flash memory; and the rectifying unit is a bridge rectifier.

[0015]

The effect of the invention is to drive the LED light string connected to the second LED driving device to be brightened and changed by using the first control command, so as to connect the LEDs connected to the plurality of LED driving devices. The body light string can be synchronously or point-controlled to reduce the number of light-emitting diodes with address codes connected to the single light-emitting diode string; and the operation signal is directly transmitted through the carrier to transmit control commands, thereby enabling The use of a two-legged light-emitting diode eliminates the need for additional signal transmission lines, resulting in cost savings.

[0044]

10‧‧‧Lighting diode string drive system

[0045]

20‧‧‧Lighting diode string

[0046]

30‧‧‧Lighting diode drive

[0047]

40‧‧‧AC power supply unit

[0048]

50‧‧‧First Control Order

[0049]

60‧‧‧second control order

[0050]

70‧‧‧ third control order

[0051]

102‧‧‧Switch unit

[0052]

104‧‧‧Control unit

[0053]

106‧‧‧Voltage level generating unit

[0054]

108‧‧‧ memory unit

[0055]

110‧‧‧Filter unit

[0056]

112‧‧‧Rectifier unit

[0057]

202‧‧‧Lighting diode

[0058]

204‧‧‧First signal transmission line

[0059]

206‧‧‧Second signal transmission line

[0060]

502‧‧‧First illuminating signal

[0061]

504‧‧‧First operation signal

[0062]

602‧‧‧second operation signal

[0063]

604‧‧‧second illuminating signal

[0064]

702‧‧‧ third operational signal

[0065]

704‧‧‧ Third illuminating signal

[0066]

SC1‧‧‧First Signal Conversion Unit

[0067]

SC2‧‧‧Second signal conversion unit

[0068]

SC3‧‧‧ third signal conversion unit

[0069]

MCU1‧‧‧first microprocessor

[0070]

MCU2‧‧‧second microprocessor

[0071]

MCU3‧‧‧ third microprocessor

[0072]

Vout‧‧‧ output

[0073]

R1‧‧‧first resistance

[0074]

R2‧‧‧second resistance

[0075]

R3‧‧‧ third resistor

[0076]

R4‧‧‧fourth resistor

[0077]

R5‧‧‧ fifth resistor

[0078]

SW1‧‧‧first pilot switch

[0079]

SW2‧‧‧Second conductive switch

[0080]

ZD‧‧‧Zina diode

[0081]

C‧‧‧ capacitor

[0082]

D‧‧‧ diode

[0016]

1 is a block diagram of a light emitting diode string driving system of the present invention.

[0017]

2 is a circuit diagram of a first LED driving device of the present invention.

[0018]

3 is a circuit diagram of a second LED driving device of the present invention.

[0019]

4 is a circuit diagram of a third LED driving device of the present invention.

[0020]

FIG. 5a is a waveform diagram of a first control command fixed frequency control according to the present invention.

[0021]

Figure 5b is a waveform diagram of the first control command variable frequency control of the present invention.

[0022]

Fig. 6 is a waveform diagram showing control commands of the first to third light emitting diode driving devices of the light emitting diode string driving system of the present invention.

[0023]

The detailed description and the technical description of the present invention are to be understood as the

[0024]

Please refer to FIG. 1 to FIG. 4 , which are block diagrams and circuit diagrams of the LED light string driving system of the present invention. A light-emitting diode string driving system 10 includes a plurality of light-emitting diode strings 20 and a plurality of LED driving devices 30 and is applied to a plurality of AC power supply units 40, and the LED strings 20 A plurality of light emitting diodes 202 are included. The light emitting diodes 202 are connected to each other in series and each of the light emitting diodes 202 has a corresponding address code.

[0025]

The light emitting diode driving devices 30 are electrically connected to the light emitting diode light strings 20. The LED driving device 30 includes a switching unit 102, a control unit 104, a voltage level generating unit 106, a memory unit 108, a filtering unit 110, and a rectifying unit 112.

[0026]

After the AC power source transmitted by the AC power supply unit 40 is processed by the rectifying unit 112 and the filtering unit 110 (and other electronic components not shown in FIG. 1), the AC power source is converted into a DC power source.

[0027]

The switch unit 102 is electrically connected to the LED string 20; the control unit 104 is electrically connected to the switch unit 102; the voltage level generating unit 106 is electrically connected to an output terminal Vout of the LED driver 30. And the light emitting diode string 20; the memory unit 108 is electrically connected to the control unit 104; the filtering unit 110 is electrically connected to the switch unit 102, the control unit 104, and the voltage level generating unit 106; the rectifying unit 112 is electrically connected to the filtering unit 110.

[0028]

The first LED driving device 30 is electrically connected to the last one of the LED strings 20 electrically connected to the first LED driving device 30 by using one end of the first signal transmission line 204. The anode of the polar body 202 is electrically connected to the control unit 104 of the second LED driving device 30; the second LED driving device 30 is electrically connected to the second by a second signal transmission line 206. The anode of the last LED diode 202 of the LED string 20 electrically connected to the LED driving device 30 is electrically connected to the third LED driving device 30. The control unit 104; and so on, the LED light string driving system 10 of the present invention can connect a plurality of groups of LED driving devices 30 and their LED strings 20 at a time.

[0029]

In particular, in the embodiment, the first signal transmission line 204 and the second signal transmission line 206 are not limited to being electrically connected only to the anode of the last LED, or may be an LED lamp. Any of the light-emitting diodes 202 on the string 20 has the effect of shortening the length of the transmission line when connecting the anode of the last of the light-emitting diodes 202.

[0030]

In a specific embodiment, the control unit 104 of the first LED driving device has a plurality of illumination patterns. The control unit 104 controls the opening and closing of the switch unit 102 according to a selected illumination pattern. The voltage level generating unit 106 generates a plurality of voltages having a specific level, such that the output of the first LED driving device 30 is a first control command 50 to the electrically connected LED string 20 And transmitting, by the first signal transmission line 204, the first control command to the control unit 104 of the second LED driving device 30; when the first LED is electrically connected to the LED driving device 30 When the LEDs 202 of the diode string 20 are capable of interpreting the first control command 50, the LEDs 202 perform corresponding illumination changes; when the second LED driver 30 is When the control unit 104 is able to interpret the first control command 50, the control unit 104 of the second LED driving device 30 controls the opening and closing operation of the switching unit 102 to generate the voltage level generating unit 106. The voltage having a specific level causes the second LED driver 30 to output a second control command 60, and the second LED driver 30 outputs the second control command to the electrical connection. The LED light string 20 is used to transmit the second control command to the control unit 104 of the third LED driving device 30 by using the second signal transmission line 206, so that the corresponding control command can be interpreted. The light emitting diode 202 of 60 performs a lightening change or enables the control unit 104 of the third LED driving device 30 capable of interpreting the second control command 60 to issue a third control command 70 to drive the connected The LED light string 20 is illuminated; wherein the driving principle of the third control command 70 issued by the third LED driving device 30 is the same as that of the first and second LED driving devices. The description will not be repeated here; and so on, a plurality of sets of the LED driving device 30 and the LED string 20 can be connected according to user requirements.

[0031]

Further, the memory unit 108 of each of the LED driving devices 30 has a illuminating pattern used before the control unit 104 that is electrically connected is turned off. In this embodiment, the first illuminating diode is used. The memory unit 108 of the body driving device 30 is electrically connected to the first microprocessor MCU1. When the first LED driving device 30 is powered on again, the first microprocessor MCU1 can be used by the memory unit 108. The storage function drives the LED string 20 to emit light according to the illumination pattern used before the shutdown; similarly, the second LED driver 30 and the third LED driver are driven. Device 30 also operates in the same manner.

[0032]

Please refer to FIG. 2 to FIG. 4 , wherein the control unit 104 of the first LED driving device 30 includes a first microprocessor MCU1 and a first signal conversion unit SC1; and the second LED The control unit 104 of the body drive device 30 includes a second microprocessor MCU2 and a second signal conversion unit SC2. The third control unit 104 of the LED driver device 30 includes a third microprocessor MCU3. And a third signal conversion unit SC3; the first signal transmission line 204 is electrically connected to the second conductive switch SW2 of the second signal conversion unit SC2, and the second signal conversion unit SC2 is electrically connected to the second microprocessor MCU2, The first control command 50 is voltage-converted by the second signal conversion unit SC2 and sent to the second microprocessor MCU2; the second signal transmission line 206 is electrically connected to the third signal conversion unit SC3, the third signal The conversion unit SC3 is electrically connected to the third microprocessor MCU3, and the second control unit 60 performs voltage conversion by the third signal conversion unit SC3 and sends the voltage to the third microprocessor MCU3, thereby avoiding Voltage The problem that the first control command 50 and the second control command 60 cannot be successfully transmitted is poor.

[0033]

The circuit of the first signal conversion unit SC1 and the second signal conversion unit SC2 is further described; the first signal conversion unit SC1 includes a first resistor R1, a second resistor R2, and a first conductive switch SW1; The first resistor R1 is electrically connected to the filter unit 110; the second resistor R2 is electrically connected to the first resistor R1; the first conductive switch SW1 is electrically connected to the second resistor R2 and the rectifying unit 112; the first microprocessor The MCU 1 is electrically connected to the first resistor R1, the second resistor R2, and the switch unit 102.

[0034]

The second signal conversion unit SC2 includes a third resistor R3, a fourth resistor R4, and a second conductive switch SW2; wherein the third resistor R3 is electrically connected to the filtering unit 110; the fourth resistor R4 is electrically connected to the first a third resistor R3; the second conductive switch SW2 is electrically connected to the fourth resistor R4 and the rectifying unit 112; the second microprocessor MCU2 is electrically connected to the third resistor R3, the fourth resistor R4 and the switching unit 102; The first signal transmission line 204 is electrically connected to the second conductive switch SW2; when the first signal transmission line 204 transmits the first control command 50 to the second conductive switch SW2, the first control command 50 drives the second conductive switch SW2. Continuously opening and closing the operation, causing the second signal conversion unit SC2 to continuously output a voltage signal to the second microprocessor MCU2, thereby driving the second microprocessor MCU2 to operate the electrically connected switch unit 102 to perform the opening and closing operation.

[0035]

The circuit and operation mode of the third signal conversion unit SC3 are the same as those of the second signal conversion unit SC2, and therefore will not be described again.

[0036]

Referring to FIG. 2, the voltage level generating unit 106 of each of the LED driving devices 30 includes a fifth resistor R5, a Zener diode ZD, a capacitor C and a rectifying diode D; The fifth resistor R5 is electrically connected to the filtering unit 110; the Zener diode ZD is electrically connected to the fifth resistor R5; the capacitor C is electrically connected to the fifth resistor R5; the rectifying diode D is electrically connected to the fifth resistor R5 And the output terminal Vout; taking the first LED driving device 30 as an example, when the first microprocessor MCU1 drives the switching unit 102 to be in an open state, the DC power output by the filtering unit 110 is The voltage is output to the output terminal Vout via the fifth resistor R5 and the divided voltage of the Zener diode ZD, and the voltage level generating unit 106 generates a voltage signal having a specific level until the When the first microprocessor MCU1 drives the switch unit 102 to the closed state, the DC power output by the filter unit 110 passes directly through the switch unit 102, and the voltage signal returns to normal; when the first microprocessor The MCU 1 continuously drives the switching unit 102 to be heavy The voltage level generating unit 106 generates a plurality of voltage signals having a specific level, and the first LED driving device 30 outputs the first control command 50 by using the voltage signals. Similarly, the remaining LED driving device 30 is also operated in the same manner.

[0037]

Please refer to FIG. 5a and FIG. 5b, which are waveform diagrams of an embodiment of the first control command 50 of the present invention, wherein the first control command 50 has a first illumination signal 502 and a first operation signal 504 due to Each of the LEDs 202 has a corresponding address code. Therefore, the first illumination signal 502 can only be used for the LEDs 202 that can interpret the first illumination signal 502 to emit light; the first operation signal 504 is The control unit 104 provided to the second LED driving device 20 performs interpretation and generates the second control command 60 according to the first control command 50; in particular, FIG. 5a is a fixed frequency control, in a fixed frequency In the control method, the control unit 104 combines the change of the on-time of the switch unit 102 into the first control command 50; FIG. 5b is the variable-frequency control, and under the variable-frequency control method, the control unit 104 controls the switch unit The turn-on frequency of 102 is changed, so that the number of pulse signals is changed to be combined into a first control command 50; wherein the order of the first illuminating signal 502 and the first operating signal 504 may be illuminating The content determines that, after the first operation signal 504 is sent first, the first illumination signal 502 is subsequently sent, but the present invention is not limited to this order; the second control command 60 has the first control The same features of the command 50 are not repeated here; the first control command 50 may be, for example, but the invention is not limited to a pulse signal.

[0038]

Please refer to FIG. 6 , which is a timing chart of the opening and closing operation of the switching unit 102 of the first to third LED driving devices 30 , and is described below with reference to FIGS. 1 to 3 :

[0039]

When the first control command 50 outputted by the first LED driver 30 includes a first operation signal 502 and a first illumination signal 504, the first illumination signal 504 can be driven by the first LED. The specific light-emitting diode 202 having the address code is electrically connected to the device 30, so that the LED 202 emits light according to the first illumination signal 504, and the first operation signal 502 passes through the first signal transmission line 204. Passed to the second signal conversion unit SC2, the second signal conversion unit further transmits the first operation signal 502 to the second microprocessor MCU2, because the second microprocessor MCU2 can interpret the first operation signal 502 Therefore, the second microprocessor MCU2 issues a second control command 60 to the electrically connected switch unit 102. Similarly, the second control command 60 includes a second operation signal 602 and a first The second illuminating signal 604; the second illuminating signal 604 can be interpreted by the specific illuminating diode 202 having the address code electrically connected by the second illuminating diode driving device 30, so the illuminating The second body signal 604 is transmitted to the third signal conversion unit SC3 through the second signal transmission line 206, and the third signal conversion unit SC3 performs the second operation. The signal 602 is transmitted to the third microprocessor MCU3. Since the third microprocessor MCU3 can interpret the second operation signal 602, the third microprocessor MCU3 can open and close the electrically connected switch unit 102. Acting to issue a third control command 70, the third control command 70 includes a third operational signal 702 and a third illuminating signal 704; and so on, whereby the illuminating diode string driving system of the present invention can drive multiple groups Light-emitting diode driving device 30.

[0040]

The switching unit 102 can be, for example, but the invention is not limited to a transistor switch (for example, a PMOS); the control unit 104 can be, for example, but the invention is not limited to a microprocessor or a microcontroller; the memory unit 108 For example, the invention is not limited to a flash memory; the rectifying unit 112 can be, for example, but the invention is not limited to a bridge rectifier.

[0041]

The maximum utility of the present invention is that the number of address codes of the LEDs 202 can be reduced to achieve the feasibility and efficiency of the back-end production management.

[0042]

The function of the invention is to emit an illuminating signal (for driving the LED string) and an operation signal (to be transmitted to the next illuminating diode driving device, thereby generating the illuminating of the next illuminating diode string) The signal) is loaded on the power line to reduce the use of the transmission line, whereby the two-legged light emitting diode 202 can be employed.

[0043]

However, the above is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the equivalent changes and modifications made by the scope of the present invention should still be covered by the patent of the present invention. The scope of the scope is intended to protect. The invention may be embodied in various other modifications and changes without departing from the spirit and scope of the inventions. It is intended to fall within the scope of the appended claims. In summary, it is known that the present invention has industrial applicability, novelty and advancement, and the structure of the present invention has not been seen in similar products and public use, and fully complies with the requirements of the invention patent application, and is filed according to the patent law.

20‧‧‧Lighting diode string

30‧‧‧Lighting diode drive

40‧‧‧AC power supply unit

102‧‧‧Switch unit

104‧‧‧Control unit

106‧‧‧Voltage level generating unit

108‧‧‧ memory unit

110‧‧‧Filter unit

112‧‧‧Rectifier unit

202‧‧‧Lighting diode

204‧‧‧First signal transmission line

SC1‧‧‧First Signal Conversion Unit

MCU1‧‧‧first microprocessor

Vout‧‧‧ output

R1‧‧‧first resistance

R2‧‧‧second resistance

R5‧‧‧ fifth resistor

SW1‧‧‧first pilot switch

ZD‧‧‧Zina diode

C‧‧‧ capacitor

D‧‧‧ diode

Claims (10)

[Item 1] A light emitting diode string driving system comprising:
a plurality of light-emitting diode strings, each of the light-emitting diode strings comprising a plurality of light-emitting diodes connected in series with each other, the light-emitting diodes having an address encoding; and a plurality of light-emitting diode driving devices, Each of the LED driving devices is electrically connected to each of the LED strings,
Wherein the LED driving device comprises:
a switch unit electrically connected to the light emitting diode string;
a control unit having a complex illumination pattern, the control unit being electrically connected to the switch unit;
a voltage level generating unit electrically connecting the output end of the driving device and the LED light string; and a first signal transmission line, one end and the first one of the LED driving devices One of the connected light-emitting diode strings is electrically connected to the anode of the light-emitting diode, and the other end is electrically connected to the control unit of the second light-emitting diode driving device;
The control unit of the first LED driving device controls the opening and closing operation of the switching unit according to the selected lighting pattern, so that the voltage level generating unit generates a plurality of specific levels. a voltage, whereby the first LED driving device outputs a first control command to the electrically connected LED string, so that the LED corresponding to the first control command can be read Shine change
The control unit of the first LED driving device transmits the first control command to the second LED driving device through the signal transmission line electrically connected to the first LED driving device. The control unit, when the control unit of the second LED driving device is capable of interpreting the received first control command, causing the second LED driving device to generate a second control command correspondingly In the light-emitting diode string that is electrically connected, the light-emitting diode corresponding to the second control command can be made to change in brightness. [Item 2] The light emitting diode string driving system of claim 1, wherein the first control unit of the LED driving device comprises a first microprocessor, and the second LED driving The control unit of the device comprises: a second signal conversion unit and a second microprocessor electrically connected to the first signal conversion unit, the signal transmission line is electrically connected to the second signal conversion unit, thereby receiving the received The first control command performs voltage conversion and transmits to the second microprocessor. [Item 3] The illuminating diode string driving system of claim 2, further comprising a second signal transmission line, wherein the second signal transmission line is electrically connected to one of the second illuminating string of the illuminating diode The anode is electrically connected to the control unit of the third LED driving device, wherein the control unit of the third LED driving device comprises a third signal conversion unit and a third microprocessor The second signal transmission line is electrically connected to the third signal conversion unit, whereby the received second control command is voltage-converted and transmitted to the electrically connected third microprocessor. [Item 4] The first control command has a first operation signal and a first illumination signal, and the first operation signal is used by the second microprocessor to interpret the light-emitting diode string driving system. The first illuminating signal is interpreted by the first illuminating diodes electrically connected to the first illuminating diode driving device; the second control command has a second operating signal and a second illuminating signal, the second operation The signal is interpreted by the third microprocessor, and the second illumination signal is interpreted by the second LEDs electrically connected by the second LED driver. [Item 5] The illuminating diode driving system of claim 4, wherein one of the first signal transmission lines is electrically connected to the first LED light electrically connected to the LED driving device. The last one of the LEDs of the light-emitting diode; one end of the second signal transmission line is electrically connected to the last one of the light-emitting diode strings electrically connected to the second light-emitting diode driving device Polar body anode. [Item 6] The illuminating diode lamp train driving system of claim 1, wherein the first one of the illuminating diode driving device and the second illuminating diode driving device are controlled by a fixed frequency a switching unit that generates the first control command and the second control command by changing a length of an on time of the switch unit. [Item 7] The illuminating diode lamp train driving system of claim 1, wherein the first one of the illuminating diode driving device and the second control unit of the illuminating diode driving device are frequency-controlled to control the switch a unit that generates the first control command and the second control command by changing a turn-on frequency of the switch unit. [Item 8] The illuminating diode lamp driving system of claim 1, wherein the illuminating diode driving device further comprises:
a filtering unit electrically connected to the switching unit, the control unit and the voltage level generating unit; and a rectifying unit electrically connected to the filtering unit. [Item 9] The illuminating diode driving system of claim 1, wherein the illuminating diode driving device further comprises: a memory unit electrically connected to the control unit and storing the control unit before shutting down The last illuminating style used. [Item 10] The illuminating diode string driving system of claim 9, wherein the switching unit is a transistor switch; the memory unit is a flash memory; and the rectifying unit is a bridge rectifier.