CN215420857U

CN215420857U - LED lamp driving circuit

Info

Publication number: CN215420857U
Application number: CN202121210091.3U
Authority: CN
Inventors: 赖晓君; 潘金海
Original assignee: Shenzhen Jinma Technology Co ltd
Current assignee: Shenzhen Jinma Technology Co ltd
Priority date: 2021-06-01
Filing date: 2021-06-01
Publication date: 2022-01-04
Anticipated expiration: 2031-06-01

Abstract

The utility model relates to the technical field of LED lamp driving, in particular to an LED lamp driving circuit which is characterized by comprising a constant current driving module, a first multiplexing constant current driving module, a second multiplexing constant current driving module, a control module and a selection module, wherein the constant current driving module, the first multiplexing constant current driving module, the second multiplexing constant current driving module and the selection module are all connected with the control module, and the first multiplexing constant current driving module and the second multiplexing constant current driving module are all connected with the selection module. In the driving circuit, the constant current driving of blue, cold, green and warm colors is multiplexed, so that the use of electronic components is reduced, the size of a PCB provided with the LED lamp driving circuit is relatively small, and the cost is reduced. And the circuit has simple structure and is convenient to realize and popularize.

Description

LED lamp driving circuit

Technical Field

The utility model relates to the technical field of LED lamp driving, in particular to an LED lamp driving circuit.

Background

In recent years, high-brightness LED lighting is gradually replacing traditional light sources such as incandescent lamps and fluorescent lamps with advantages of high light efficiency, long service life, high reliability and no pollution.

At present, in the technical field of LED lamp driving, a color lamp driving circuit (hereinafter referred to as color lamp + color temperature lamp driving) having RGB color lamps and CCT color temperature lamps simultaneously has a variety of driving forms due to different power and different driving chips, but for a high-power color lamp + color temperature lamp driving circuit, a constant current driving circuit of five independent LED lamps of R (red), G (green), B (blue), (W) cold and Y (warm) is basically adopted; this may result in more electronic components being required for the LED lamp driving circuit, and the PCB provided with the LED lamp driving circuit may be relatively bulky, increasing the cost.

Disclosure of Invention

In order to solve the above problems, a primary object of the present invention is to provide an LED lamp driving circuit, which reduces the use of electronic components, and reduces the volume and cost of a PCB on which the LED lamp driving circuit is disposed.

Another object of the present invention is to provide an LED lamp driving circuit, which has a simple structure and is easy to popularize.

In order to achieve the above object, the present invention has the following technical means.

A LED lamp driving circuit is characterized in that the driving circuit comprises a constant current driving module, a first multiplexing constant current driving module, a second multiplexing constant current driving module, a control module and a selection module, the constant current driving module, the first multiplexing constant current driving module, the second multiplexing constant current driving module and the selection module are all connected with the control module, the first multiplexing constant current driving module and the second multiplexing constant current driving module are both connected with the selection module, the constant current driving module is provided with an interface J1 for accessing colored lamps, the first multiplexing constant current driving module is provided with an interface J3 for accessing colored lamps and an interface J2 for accessing color temperature lamps, the second multiplexing constant current driving module is provided with an interface J5 for connecting a colored lamp and an interface J4 for connecting a color temperature lamp, the control module controls the first multiplexing constant current driving module and the second multiplexing constant current driving module to drive the colored lamps or drive the color temperature lamps through the selection module. In the driving circuit, the colored lamp is any one of three colors of R (red), G (green) and B (blue), and the color temperature lamp is any one of two colors of W (cold) and Y (warm). Wherein J1 is used for switching in the LED lamp of R (red) colour, J2 is used for switching in the LED lamp of Y (warm) colour, J3 is used for switching in the LED lamp of G (green) colour, J2 is used for switching in the LED lamp of W (cold) colour, J3 is used for switching in the LED lamp of B (blue) colour. The control module controls the first multiplexing constant current driving module and the second multiplexing constant current driving module to selectively drive the LED lamps with two colors of G (green) and B (blue) to work through the selection module, the control module directly controls the constant current driving module to drive the LED lamps with the R (red) color to work, and the LED lamps with the three colors of R (red), G (green) and B (blue) are driven by the driving circuit to work at the moment; the control module can also control the first multiplexing constant current driving module and the second multiplexing constant current driving module to selectively drive the LED lamps with W (cold) color and Y (warm) color to work through the selection module, and the control module directly controls the constant current driving module to drive the LED lamps with R (red) color to not work. The constant current drive of blue and cold colors, green and warm colors is multiplexed, the use of electronic components is reduced, the size of a PCB provided with the LED lamp drive circuit is relatively small, and the cost is reduced. And the circuit has simple structure and is convenient to realize and popularize.

Further, the control module comprises a bluetooth chip U4; the Bluetooth chip U4 comprises a PWM _ R pin, a PWM _ GY pin, a PWM _ BW pin and a SEL _ CCT _ RGBN pin, wherein the PWM _ R pin is connected with the constant current driving module, the PWM _ GY pin and the PWM _ BW pin are respectively connected with the first multiplexing constant current driving module and the second multiplexing constant current driving module, and the first multiplexing constant current driving module and the second multiplexing constant current driving module are both connected with the SEL _ CCT _ RGBN pin.

Further, the model of the bluetooth chip U4 is ST17H 66.

Further, the selection module comprises a resistor R1, a resistor R2, a resistor R3 and a MOS transistor Q1, one end of the resistor R2 is connected with a SEL _ CCT _ RGbn pin, one end of the resistor R3 and a grid of the MOS transistor Q1 are connected with the other end of the resistor R2, the other end of the resistor R3 is grounded, a source of the MOS transistor Q1 is grounded, 3.3V voltage is input to one end of the resistor R1, and the other end of the resistor R1 and a drain of the MOS transistor Q1 are connected with the first multiplexing constant current driving module and the second multiplexing constant current driving module.

Further, the constant current driving module further includes an LED constant current driver chip U5, a resistor R6, a polar capacitor C12, an inductor L1, a diode D1, a capacitor C13, and a MOS transistor Q2, the LED constant current driver chip U5 includes a CSN pin, a DIM pin, a VIN pin, a VSS pin, a DRV pin, and a VCC pin, the DIM pin of the LED constant current driver chip U5 is connected to the PWM _ R pin, the CSN pin of the LED constant current driver chip U5 is connected to one end of the resistor R6 and one end of the inductor L1, the other end of the resistor R6, the positive electrode of the polar capacitor C12, and the negative electrode of the diode D1 are connected to the constant current VIN pin of the LED constant current driver chip U5, a 16V voltage is further input to the pin of the LED constant current driver chip U5, the VSS pin of the LED constant current driver chip U5 is grounded, the DRV pin of the LED constant current driver chip U5 is connected to the gate terminal of the MOS transistor Q2, the VCC pin of the LED constant current driver chip U5 is connected with one end of a capacitor C13, the other end of the capacitor C13 is grounded, the other end of the inductor L1, the anode of a diode D1 and the drain of an MOS tube Q2 are all connected with an interface J1, and the source of the MOS tube Q2 is grounded.

Further, the first multiplexing constant current driving module further comprises an LED constant current driver chip U6, a resistor R7, a polar capacitor C14, an inductor L2, a diode D2, a capacitor C15, a MOS transistor Q3, and a driver chip U7, wherein the LED constant current driver chip U6 comprises a CSN pin, a DIM pin, a VIN pin, a VSS pin, a DRV pin, and a VCC pin, the driver chip U7 comprises a VREF pin, an IN1 pin, an IN2 pin, a GND pin, a VIN pin, an OUT1 pin, an ISEN pin, and an OUT2 pin, the DIM pin of the LED constant current driver chip U6 is connected with a PWM _ GY pin, the CSN pin of the LED constant current driver chip U6 is connected with one end of a resistor R7 and one end of the inductor L2, the other end of the resistor R7, the positive electrode of the polar capacitor C14, the negative electrode of the diode D2 are connected with the pin of the LED driver chip U6, and the constant current driver chip U6 has a constant current voltage input to the constant current driver chip 6, the VSS pin of the LED constant current driver chip U6 is grounded, the DRV pin of the LED constant current driver chip U6 is connected with the grid of a MOS tube Q3, the VCC pin of the LED constant current driver chip U6 is connected with one end of a capacitor C15, the other end of the capacitor C15 is grounded, the other end of an inductor L2 is connected with the VM pin of a driver chip U7, the anode of a diode D2 and the drain of the MOS tube Q3 are both connected with the GND pin of the driver chip U7, the source of the MOS tube Q3 is grounded, the VREF pin of the driver chip U7 is connected with 3.3V voltage, one ends of the SEL _ CCT _ RGbn pin and a resistor R2 are both connected with the IN 56 pin of a driver chip U82 7, the other end of the resistor R1 and the drain of the MOS tube Q1 are both connected with the IN1 pin of the driver chip U7, the pins of the driver chip U7 and the OUT1 are both connected with the GND 36J 1, the ISEN pin of the driver chip U7 is grounded.

Further, the first multiplexing constant current driving module further comprises an LED constant current driver chip U8, a resistor R8, a polar capacitor C16, an inductor L3, a diode D3, a capacitor C17, a MOS transistor Q4, and a driver chip U9, wherein the LED constant current driver chip U8 comprises a CSN pin, a DIM pin, a VIN pin, a VSS pin, a DRV pin, and a VCC pin, the driver chip U9 comprises a VREF pin, an IN1 pin, an IN2 pin, a GND pin, a VIN pin, an OUT1 pin, an ISEN pin, and an OUT2 pin, the DIM pin of the LED constant current driver chip U8 is connected with a PWM _ GY pin, the CSN pin of the LED constant current driver chip U8 is connected with one end of a resistor R8 and one end of the inductor L3, the other end of the resistor R8, the positive electrode of the polar capacitor C16, the negative electrode of the diode D3 are connected with the pin of the LED driver chip U8, and the constant current driver chip U8 has a constant current voltage input to the constant current driver chip 8, the VSS pin of the LED constant current driver chip U8 is grounded, the DRV pin of the LED constant current driver chip U8 is connected with the grid of a MOS tube Q4, the VCC pin of the LED constant current driver chip U8 is connected with one end of a capacitor C17, the other end of the capacitor C17 is grounded, the other end of an inductor L3 is connected with the VM pin of a driver chip U9, the anode of a diode D3 and the drain of the MOS tube Q4 are both connected with the GND pin of the driver chip U9, the source of the MOS tube Q4 is grounded, the VREF pin of the driver chip U9 is connected with 3.3V voltage, one ends of the SEL _ CCT _ RGbn pin and a resistor R2 are both connected with the IN 56 pin of a driver chip U82 9, the other end of the resistor R1 and the drain of the MOS tube Q1 are both connected with the IN1 pin of the driver chip U9, the pins of the driver chip U9 and the OUT1 are both connected with the GND 36J 1, the ISEN pin of the driver chip U9 is grounded.

Further, the bluetooth chip U4 further includes a KEY _ FUNC pin, a KEY _ LT _ a pin, a KEY _ LT _ B pin, a KEY _ MD _ a pin, and a KEY _ MD _ B pin, the KEY _ FUNC pin is connected with a function selection KEY S1, the KEY _ LT _ a pin and the KEY _ MD _ B pin are connected with an encoding switch VR1, and the KEY _ MD _ a pin and the KEY _ MD _ B pin are connected with an encoding switch VR 2. VR1 is brightness adjusting switch and VR2 is color temperature adjusting switch, which can be knob coding type switch or common button mode switch. The LED constant current driver chip U5, the LED constant current driver chip U6 and the LED constant current driver chip U8 are all QX5241a, and the driver chip U7 and the driver chip U9 are all AT 8236.

Furthermore, the driving circuit further comprises a voltage stabilizing module, and the constant current driving module, the first multiplexing constant current driving module, the second multiplexing constant current driving module, the control module and the selection module are all connected with the voltage stabilizing module. The voltage stabilizing module is the prior art.

Furthermore, the drive circuit further comprises a nixie tube drive module and a nixie tube, wherein the nixie tube drive module is connected with the control module, and the nixie tube drive module is connected with the nixie tube. According to the display mode, chips with different driving interfaces can be selected, and the circuit selects the mode of the I2C interface to drive. Nixie tubes are prior art. The nixie tube driving module comprises a chip VK 1640B.

Specifically, in the driving circuit, by using the characteristics that the output of PWM _ R/PWM _ G/PWM _ B and the output of PWM _ W/PWM _ Y are not output in an RGB color mode, and the output of PWM _ W/PWM _ Y and the output of PWM _ R/PWM _ G/PWM _ B are not output in a CCT color temperature mode, namely CCT color temperature cannot be output simultaneously, the constant current driving of blue, cold, green and warm colors is multiplexed by adopting a mode of switching CTT/RGB (constant current drive output) of an LED lamp, so that the high-cost 5 drive is reduced to 3 paths, the product volume can be reduced, and the occupation of IO (input/output) port resources of an MCU (micro control unit) is reduced.

Compared with the prior art, the LED lamp driving circuit has the advantages that the control module controls the first multiplexing constant current driving module and the second multiplexing constant current driving module to selectively drive the LED lamps with two colors of G (green) and B (blue) to work through the selection module, the control module directly controls the constant current driving module to drive the LED lamps with the color of R (red) to work, and the LED lamps with the three colors of R (red), G (green) and B (blue) are driven by the driving circuit to work; the control module can also control the first multiplexing constant current driving module and the second multiplexing constant current driving module to selectively drive the LED lamps with W (cold) color and Y (warm) color to work through the selection module, and the control module directly controls the constant current driving module to drive the LED lamps with R (red) color to not work. The constant current drive of blue and cold colors, green and warm colors is multiplexed, the use of electronic components is reduced, the size of a PCB provided with the LED lamp drive circuit is relatively small, and the cost is reduced. And the circuit has simple structure and is convenient to realize and popularize.

Drawings

Fig. 1 is a schematic block diagram of the present invention.

Fig. 2 is a circuit schematic of the control module of the present invention.

Fig. 3 is a circuit schematic diagram of the constant current driving module of the present invention.

Fig. 4 is a circuit schematic diagram of a first multiplexing constant current driving module of the present invention.

Fig. 5 is a circuit schematic diagram of a second multiplexing constant current driving module of the present invention.

Fig. 6 is a circuit schematic of the selection module of the present invention.

Fig. 7 is a circuit schematic of the regulator module of the present invention.

Fig. 8 is a schematic circuit diagram of the nixie tube driving module of the present invention.

Fig. 9 is a circuit schematic of the nixie tube of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

A LED lamp driving circuit is characterized in that the driving circuit comprises a constant current driving module, a first multiplexing constant current driving module, a second multiplexing constant current driving module, a control module and a selection module, the constant current driving module, the first multiplexing constant current driving module, the second multiplexing constant current driving module and the selection module are all connected with the control module, the first multiplexing constant current driving module and the second multiplexing constant current driving module are both connected with the selection module, the constant current driving module is provided with an interface J1 for accessing colored lamps, the first multiplexing constant current driving module is provided with an interface J3 for accessing colored lamps and an interface J2 for accessing color temperature lamps, the second multiplexing constant current driving module is provided with an interface J5 for connecting a colored lamp and an interface J4 for connecting a color temperature lamp, the control module controls the first multiplexing constant current driving module and the second multiplexing constant current driving module to drive the colored lamps or drive the color temperature lamps through the selection module.

Further, the model of the bluetooth chip U4 is ST17H 66.

Further, the bluetooth chip U4 further includes a KEY _ FUNC pin, a KEY _ LT _ a pin, a KEY _ LT _ B pin, a KEY _ MD _ a pin, and a KEY _ MD _ B pin, the KEY _ FUNC pin is connected with a function selection KEY S1, the KEY _ LT _ a pin and the KEY _ MD _ B pin are connected with an encoding switch VR1, and the KEY _ MD _ a pin and the KEY _ MD _ B pin are connected with an encoding switch VR 2.

Furthermore, the driving circuit further comprises a voltage stabilizing module, and the constant current driving module, the first multiplexing constant current driving module, the second multiplexing constant current driving module, the control module and the selection module are all connected with the voltage stabilizing module.

Furthermore, the drive circuit further comprises a nixie tube drive module and a nixie tube, wherein the nixie tube drive module is connected with the control module, and the nixie tube drive module is connected with the nixie tube.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. A LED lamp driving circuit is characterized in that the driving circuit comprises a constant current driving module, a first multiplexing constant current driving module, a second multiplexing constant current driving module, a control module and a selection module, the constant current driving module, the first multiplexing constant current driving module, the second multiplexing constant current driving module and the selection module are all connected with the control module, the first multiplexing constant current driving module and the second multiplexing constant current driving module are both connected with the selection module, the constant current driving module is provided with an interface J1 for accessing colored lamps, the first multiplexing constant current driving module is provided with an interface J3 for accessing colored lamps and an interface J2 for accessing color temperature lamps, the second multiplexing constant current driving module is provided with an interface J5 for connecting a colored lamp and an interface J4 for connecting a color temperature lamp, the control module controls the first multiplexing constant current driving module and the second multiplexing constant current driving module to drive the colored lamps or drive the color temperature lamps through the selection module.

2. The LED lamp driving circuit according to claim 1, wherein the control module comprises a Bluetooth chip U4; the Bluetooth chip U4 comprises a PWM _ R pin, a PWM _ GY pin, a PWM _ BW pin and a SEL _ CCT _ RGBN pin, wherein the PWM _ R pin is connected with the constant current driving module, the PWM _ GY pin and the PWM _ BW pin are respectively connected with the first multiplexing constant current driving module and the second multiplexing constant current driving module, and the first multiplexing constant current driving module and the second multiplexing constant current driving module are both connected with the SEL _ CCT _ RGBN pin.

3. The LED lamp driving circuit as claimed in claim 2, wherein the Bluetooth chip U4 is model ST17H 66.

4. The LED lamp driving circuit as claimed in claim 2, wherein the selection module comprises a resistor R1, a resistor R2, a resistor R3 and a MOS transistor Q1, one end of the resistor R2 is connected to a SEL _ CCT _ RGbn pin, one end of the resistor R3 and a grid of the MOS transistor Q1 are connected to the other end of the resistor R2, the other end of the resistor R3 is grounded, a source of the MOS transistor Q1 is grounded, one end of the resistor R1 is inputted with a voltage of 3.3V, and the other end of the resistor R1 and a drain of the MOS transistor Q1 are connected to the first multiplexing constant current driving module and the second multiplexing constant current driving module.

5. The LED lamp driving circuit according to claim 4, wherein the constant current driving module further comprises an LED constant current driver chip U5, a resistor R6, a polar capacitor C12, an inductor L1, a diode D1, a capacitor C13, and a MOS transistor Q2, the LED constant current driver chip U5 comprises a CSN pin, a DIM pin, a VIN pin, a VSS pin, a DRV pin, and a VCC pin, the DIM pin of the LED constant current driver chip U5 is connected to the PWM _ R pin, the CSN pin of the LED constant current driver chip U5 is connected to one end of the resistor R6 and one end of the inductor L1, the other end of the resistor R6, the anode of the polar capacitor C12, and the cathode of the diode D1 are connected to the DRV pin of the LED driver chip U5, a 16V voltage is further input to the VIN pin of the LED driver chip U5, the constant current driver chip U5 is connected to the gate of the MOS transistor Q29, the VCC pin of the LED constant current driver chip U5 is connected with one end of a capacitor C13, the other end of the capacitor C13 is grounded, the other end of the inductor L1, the anode of a diode D1 and the drain of an MOS tube Q2 are all connected with an interface J1, and the source of the MOS tube Q2 is grounded.

6. The LED lamp driving circuit according to claim 4, wherein the first multiplexing constant current driving module further comprises an LED constant current driver chip U6, a resistor R7, a polar capacitor C14, an inductor L2, a diode D2, a capacitor C15, a MOS transistor Q3 and a driver chip U7, the LED constant current driver chip U6 comprises a CSN pin, a DIM pin, a VIN pin, a VSS pin, a DRV pin and a VCC pin, the driver chip U7 comprises a VREF pin, an IN1 pin, an IN2 pin, a GND pin, a VM pin, an OUT1 pin, an ISEN pin and an OUT2 pin, the DIM pin of the LED constant current driver chip U6 is connected with the PWM _ GY pin, the CSN pin of the LED constant current driver chip U6 is connected with one end of the resistor R7 and one end of the inductor L2, the other end of the resistor R7, the positive electrode of the polar capacitor C14, and the negative electrode of the diode D2 are connected with the constant current driver chip U57324, the VIN pin of the LED constant current driver chip U6 is also inputted with 16V voltage, the VSS pin of the LED constant current driver chip U6 is grounded, the DRV pin of the LED constant current driver chip U6 is connected with the gate of the MOS transistor Q3, the VCC pin of the LED constant current driver chip U6 is connected with one end of a capacitor C15, the other end of the capacitor C15 is grounded, the other end of the inductor L2 is connected with the VM pin of the driver chip U7, the anode of the diode D2 and the drain of the MOS transistor Q3 are both connected with the GND pin of the driver chip U7, the source of the MOS transistor Q3 is grounded, the VREF pin of the driver chip U7 is connected with 3.3V voltage, the SEL _ CCT _ RGBn pin and one end of the resistor R2 are both connected with the IN2 pin of the driver chip U7, the other end of the resistor R1 and the drain of the MOS transistor Q1 are both connected with the IN2 pin 69553 of the driver chip U7, and the OUT pin 828653 are both connected with the GND interface 868427, the GND pin and the OUT2 pin of the driver chip U7 are both connected with the interface J3, and the ISEN pin of the driver chip U7 is grounded.

7. The LED lamp driving circuit according to claim 4, wherein the first multiplexing constant current driving module further comprises an LED constant current driver chip U8, a resistor R8, a polar capacitor C16, an inductor L3, a diode D3, a capacitor C17, a MOS transistor Q4 and a driver chip U9, the LED constant current driver chip U8 comprises a CSN pin, a DIM pin, a VIN pin, a VSS pin, a DRV pin and a VCC pin, the driver chip U9 comprises a VREF pin, an IN1 pin, an IN2 pin, a GND pin, a VM pin, an OUT1 pin, an ISEN pin and an OUT2 pin, the DIM pin of the LED constant current driver chip U8 is connected with the PWM _ GY pin, the CSN pin of the LED constant current driver chip U8 is connected with one end of the resistor R8 and one end of the inductor L3, the other end of the resistor R8, the positive electrode of the polar capacitor C16, and the negative electrode of the diode D3 are connected with the constant current driver chip U57324, the VIN pin of the LED constant current driver chip U8 is also inputted with 16V voltage, the VSS pin of the LED constant current driver chip U8 is grounded, the DRV pin of the LED constant current driver chip U8 is connected with the gate of the MOS transistor Q4, the VCC pin of the LED constant current driver chip U8 is connected with one end of a capacitor C17, the other end of the capacitor C17 is grounded, the other end of the inductor L3 is connected with the VM pin of the driver chip U9, the anode of the diode D3 and the drain of the MOS transistor Q4 are both connected with the GND pin of the driver chip U9, the source of the MOS transistor Q4 is grounded, the VREF pin of the driver chip U9 is connected with 3.3V voltage, the SEL _ CCT _ RGBn pin and one end of the resistor R2 are both connected with the IN2 pin of the driver chip U9, the other end of the resistor R1 and the drain of the MOS transistor Q1 are both connected with the IN2 pin 69553 of the driver chip U9, and the OUT pin 828653 are both connected with the GND interface 868427, the GND pin and the OUT2 pin of the driver chip U9 are both connected with the interface J5, and the ISEN pin of the driver chip U9 is grounded.

8. The LED lamp driving circuit as claimed in claim 3, wherein the Bluetooth chip U4 further comprises a KEY _ FUNC pin, a KEY _ LT _ A pin, a KEY _ LT _ B pin, a KEY _ MD _ A pin and a KEY _ MD _ B pin, the KEY _ FUNC pin is connected with a function selection KEY S1, the KEY _ LT _ A pin and the KEY _ LT _ B pin are connected with an encoding switch VR1, and the KEY _ MD _ A pin and the KEY _ MD _ B pin are connected with an encoding switch VR 2.

9. The LED lamp driving circuit according to claim 1, further comprising a voltage stabilizing module, wherein the constant current driving module, the first multiplexing constant current driving module, the second multiplexing constant current driving module, the control module and the selection module are all connected to the voltage stabilizing module.

10. The LED lamp driving circuit according to claim 1, further comprising a nixie tube driving module and a nixie tube, wherein the nixie tube driving module is connected with the control module, and the nixie tube driving module is connected with the nixie tube.