Vehicle high beam and low beam device and vehicle

Abstract

The invention relates to the field of vehicle illumination, and discloses a vehicle high-beam and low-beam lamp device and a vehicle. The device comprises a radiator, and a high and low beam controller and an LED lens module which are arranged close to the radiator. The high and low beam controller comprises a power supply unit and a switching control unit. The power supply unit is configured to provide a constant-voltage and constant-current power supply for LED lamp beads in the LED lens module; the switching control unit is configured to switch part of LED lamp beads in the LED lens module to be lightened on the basis of the low beam input signal and switch at least part of lamp beads in the LED lens module to be lightened on the basis of the high beam input signal; wherein the number of the LED lamp beads lightened based on the high beam input signal is larger than the number of the LED lamp beads lightened based on the low beam input signal. Therefore, the high beam and low beam controller and the LED lens module are integrally designed and installed near the same radiator, the radiating efficiency is optimized, different numbers of LED lamp beads are further accurately controlled to be lightened on the basis of different input signals, and therefore accurate switching of the high beam and the low beam is achieved.

Description

Technical Field

[0001] The present application relates to the field of vehicle lighting, and in particular to a vehicle high and low beam lamp device and a vehicle. Background Art

[0002] In modern automobile technology, the control and use of high and low beam lights is not only a key factor in ensuring vehicle driving safety, but also an important part of improving driving experience and road lighting efficiency. However, there are still limitations in the control devices and control methods of vehicle high and low beam lights in the related technology, and it is necessary to further improve the performance of vehicle high and low beam lights. Summary of the invention

[0003] The present application aims to solve at least one of the technical problems in the related art to a certain extent. To this end, the present application proposes a vehicle high and low beam light device and a vehicle. The main technical solutions adopted by the present application include:

[0004] In a first aspect, an embodiment of the present application provides a vehicle high and low beam lamp device, which includes a radiator, a high and low beam controller and an LED lens module, wherein the high and low beam controller and the LED lens module are adjacent to and arranged close to the radiator; the high and low beam controller includes: a power supply unit and a switching control unit; the power supply unit is configured to provide a constant voltage and constant current power supply to the LED lamp beads in the LED lens module; the switching control unit is configured to switch on some of the LED lamp beads in the LED lens module based on a low beam input signal, and to switch on at least some of the lamp beads in the LED lens module based on a high beam input signal; wherein the number of LED lamp beads that are lit based on the high beam input signal is greater than the number of LED lamp beads that are lit based on the low beam input signal.

[0005] In one embodiment, the switching control unit includes a first LED switching circuit, a second LED switching circuit and a third LED switching circuit; wherein the first LED switching circuit and the second LED switching circuit switch some LED lamp beads in the LED lens module to light up based on the low beam input signal; the first LED switching circuit, the second LED switching circuit and the third LED switching circuit switch at least some of the lamp beads in the LED lens module to light up based on the high beam input signal.

[0006] In one embodiment, the first LED switching circuit includes: a first input module, the first input module is suitable for receiving a low beam input signal; a second input module, the second input module is suitable for receiving a high beam input signal; a first switch tube, the control end of the first switch tube is connected to the first input module through a first resistor, the first end of the first switch tube is connected to the first switching end of the LED lens module, and the second end of the first switch tube is connected to the second switching end of the LED lens module; a first transistor, the base of the first transistor is connected to the second input module, the emitter of the first transistor is grounded, and the collector of the first transistor is connected to the control end of the first switch tube through the first resistor.

[0007] In one embodiment, the second LED switching circuit includes: a third input module, the third input module is suitable for receiving a low beam input signal; a fourth input module, the fourth input module is suitable for receiving a high beam input signal; a second switch tube, the control end of the second switch tube is connected to the third input module through a second resistor, the first end of the second switch tube is connected to the second switching end of the LED lens module, and the second end of the second switch tube is grounded; a second transistor, the base of the second transistor is connected to the fourth input module, the emitter of the second transistor is grounded, and the collector of the second transistor is connected to the control end of the second switch tube through a second resistor.

[0008] In one embodiment, the third LED switching circuit includes: a fifth input module, the fifth input module is suitable for receiving a high beam input signal; a third switch tube, the control end of the third switch tube is connected to the fifth input module, and the first end of the third switch tube is grounded; a fourth switch tube, the first end of the fourth switch tube is connected to the first end of the first switch tube, the second end of the fourth switch tube is connected to the third switching end of the LED lens module, and the control end of the fourth switch tube is connected to the second end of the third switch tube; a first voltage regulator tube, the anode of the first voltage regulator tube is connected to the control end of the fourth switch tube, and the cathode of the first voltage regulator tube is connected to the second end of the fourth switch tube; a third resistor, the third resistor is connected in parallel with the first voltage regulator tube.

[0009] In one embodiment, the LED lens module includes first to tenth LED lamp beads, wherein the first LED lamp bead, the fourth LED lamp bead and the seventh LED lamp bead are connected in series in sequence, the second LED lamp bead, the fifth LED lamp bead and the eighth LED lamp bead are connected in series in sequence, the third LED lamp bead, the sixth LED lamp bead, the tenth LED lamp bead and the ninth LED lamp bead are connected in series in sequence, there is a first node between the fourth LED lamp bead and the seventh LED lamp bead, there is a second node between the fifth LED lamp bead and the eighth LED lamp bead, there is a third node between the tenth LED lamp bead and the ninth LED lamp bead, the first node, the second node and the third node are connected together as the second switching end of the LED lens module, the node between the sixth LED lamp bead and the tenth LED lamp bead serves as the first switching end of the LED lens module, and the node between the third LED lamp bead and the sixth LED lamp bead serves as the third switching end of the LED lens module.

[0010] In one embodiment, the power supply unit includes: an input protection circuit, which is suitable for performing surge protection and reverse connection protection on the input power supply of the high and low beam controller; an input filter circuit, which is suitable for filtering the input power supply; a DC-DC conversion circuit, which is suitable for converting the filtered input power supply and outputting the power supply; and an output filter circuit, which is suitable for filtering the power supply to provide a constant voltage and constant current power supply.

[0011] In one embodiment, the DC-DC conversion circuit uses a DC-DC buck chip to perform a buck conversion on the input power after filtering.

[0012] In one embodiment, the input protection circuit includes: a transient voltage suppressor tube, a first end of the transient voltage suppressor tube is suitable for connecting to an input power supply, and a second end of the transient voltage suppressor tube is grounded; a first capacitor, the first capacitor is connected in parallel with the transient voltage suppressor tube; a third resistor, the third resistor is connected in parallel with the first capacitor; a fifth switch tube, a first end of the fifth switch tube is connected to the first end of the transient voltage suppressor tube; a fourth resistor, a first end of the fourth resistor is connected to the second end of the fifth switch tube; a fifth resistor, a first end of the fifth resistor is connected to the second end of the fourth resistor, and has a fourth node, the second end of the fifth resistor is grounded, and the fourth node is connected to the control end of the fifth switch tube; a second voltage regulator tube, an anode of the second voltage regulator tube is connected to the fourth node, and a cathode of the second voltage regulator tube is connected to the second end of the fifth switch tube.

[0013] In a second aspect, an embodiment of the present application provides a vehicle, and the vehicle control method implements the content of any of the above-mentioned high and low beam headlight devices.

[0014] In the above embodiment, a vehicle high and low beam lamp device including a radiator, a high and low beam controller and an LED lens module is designed. The high and low beam controller and the LED lens module are adjacent and arranged close to the radiator, and the high and low beam controller includes: a power supply unit that provides a constant voltage and constant current power supply to the LED lamp beads in the LED lens module and a switching control unit that switches some of the LED lamp beads in the LED lens module to light up based on the low beam input signal, and switches at least some of the lamp beads in the LED lens module to light up based on the high beam input signal. Among them, the number of LED lamp beads that are lit based on the high beam input signal is greater than the number of LED lamp beads that are lit based on the low beam input signal. At this point, by integrating the high and low beam controller and the LED lens module and installing them near the same radiator, the heat dissipation efficiency is optimized, and further based on different input signals, the lighting of different numbers of LED lamp beads is accurately controlled, thereby achieving accurate switching of high and low beams. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1a A structural block diagram of a vehicle high and low beam lamp device provided according to an embodiment of the present application;

[0017] Figure 1b A schematic diagram of a vehicle high and low beam lamp device provided according to an embodiment of the present application;

[0018] Figure 2 A structural block diagram of a vehicle high and low beam lamp device provided according to another embodiment of the present application;

[0019] Figure 3 A circuit schematic diagram of a first LED switching circuit provided according to an embodiment of the present application;

[0020] Figure 4 A circuit schematic diagram of a second LED switching circuit provided according to an embodiment of the present application;

[0021] Figure 5 A circuit schematic diagram of a third LED switching circuit provided according to an embodiment of the present application;

[0022] Figure 6 A circuit schematic diagram of an LED lens module provided according to an embodiment of the present application;

[0023] Figure 7aA structural block diagram of a power supply unit provided according to an embodiment of the present application;

[0024] Figure 7b A circuit schematic diagram of an input filter circuit provided according to an embodiment of the present application;

[0025] Figure 7c A circuit schematic diagram of an output filter circuit provided according to an embodiment of the present application;

[0026] Figure 8 A circuit schematic diagram of a DC-DC conversion circuit provided according to an embodiment of the present application;

[0027] Fig. 9 The schematic diagram of an input protection circuit provided according to an embodiment of the present application is shown in FIG. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0029] In modern automotive technology, the control and use of high and low beam lights is not only a key factor in ensuring vehicle driving safety, but also an important part of improving driving experience and road lighting efficiency. However, in the related technology, the high and low beam integrated controller and the high and low beam LED lens module are two independent components. The controller and lens assembly require separate heat sinks and mounting positioning structures, and the controller generally adopts a boost topology or a linear drive topology. The high and low beam device integrated with a boost topology has the following limitations:

[0030] 1. The output voltage of the controller is high and the electromagnetic radiation and noise are high;

[0031] 2. The output capacitor has high withstand voltage requirements and needs high-voltage capacitors, which results in high cost of the device and large size of the overall device;

[0032] 3. The volume requirement of the inductor is large, the design area is large and the application cost is high.

[0033] The high and low beam devices integrated with linear drive topology also have the following limitations:

[0034] 1. If the design of the controller of the high and low beam device is not adequately considered, it is easy to cause the heat of the linear constant current device to be too high and concentrated, resulting in the heat of the linear constant current device being unable to dissipate and being damaged;

[0035] 2. Using a linear drive topology, the controller of the high and low beam device generates a lot of heat, which can easily cause heat concentration and damage the device.

[0036] Based on this, according to an embodiment of the present application, an embodiment of a vehicle high and low beam lamp device is provided, such as Figure 1a As shown, the vehicle high and low beam lamp device 100 includes: a radiator 110 , a high and low beam controller 120 and an LED lens module 130 .

[0037] The heat sink 110 may refer to a device component for dissipating heat generated in an electronic device, and is used to keep the vehicle high and low beam lamp device 100 operating normally at a safe operating temperature. The LED lens module 130 may be a light-emitting unit in the vehicle high and low beam lamp device, and may be composed of a plurality of LED lamp beads and configured with a lens for focusing and guiding light. The high and low beam controller 120 may be a circuit unit for managing the power supply and light switching of the LED lens module.

[0038] Specifically, the high and low beam controller 120 and the LED lens module 130 are disposed adjacent to and close to the heat sink 110. For example, please refer to Figure 1b The vehicle high and low beam lamp device 100 includes a lens glass 10, an upper lens bracket 20, a lower lens bracket 30, a high beam condenser 40, a low beam condenser 50, a cut-off baffle 60, a radiator 110, a high and low beam controller 120 and an LED lens module 130.

[0039] The high and low beam controller 120 includes a power supply unit 101 and a switching control unit 103 .

[0040] The power supply unit 101 may be a circuit unit including a power chip. The switching control unit 103 may be a circuit unit capable of receiving different trigger signals from the vehicle body controller and controlling different numbers of LED lamp beads in the LED lens module to light up based on different input signals.

[0041] Specifically, the power supply unit 101 is configured to provide a constant voltage and constant current power supply to the LED lamp beads in the LED lens module. The switching control unit 103 is configured to switch on some of the LED lamp beads in the LED lens module based on the low beam input signal, and to switch on at least some of the lamp beads in the LED lens module based on the high beam input signal. Exemplarily, when the high and low beam controller receives a signal from the vehicle body controller, the power supply unit 101 will trigger and activate the internal DC-D power chip and its related peripheral circuits based on the input signal, thereby generating a constant voltage and current. This stable power supply can provide a stable power supply for each LED lamp bead, ensuring that each LED lamp bead is not affected by voltage and current fluctuations caused by changes in the input signal.

[0042] It should be understood that in the vehicle's lighting system, the settings of low beam and high beam are distinguished by controlling the number of LED lamp beads that are lit. When in low beam mode, the width of the low beam only needs to reach 40 degrees, and the straight guide distance needs to reach more than 95m to maintain sufficient close-range lighting, that is, only fewer LED lamp beads are activated; when switched to high beam mode, the irradiation distance needs to reach more than 150m, that is, it needs to provide a longer lighting range and stronger light, so more LED lamp beads need to be lit.

[0043] Therefore, the number of LED lamp beads that are lit based on the high beam input signal is greater than the number of LED lamp beads that are lit based on the low beam input signal. For example, if the LED lens module contains ten LED lamp beads, then when the low beam is input, the high and low beam controller will control at most six LED lamp beads in the LED lens module to be lit based on the input signal; and when the high beam is input, the high and low beam controller will control at least nine LED lamp beads in the LED lens module to be lit based on the input signal to produce the corresponding low beam or high beam effect. Furthermore, under the premise of meeting the optimal optical performance, in order to extend the service life of the components and keep the temperature of the controller low, all LED lamp beads in the LED lens module will not be lit at the same time.

[0044] In the above embodiment, a vehicle high and low beam lamp device including a heat sink, a high and low beam controller and an LED lens module is designed. The high and low beam controller and the LED lens module are adjacent and arranged close to the heat sink, and the high and low beam controller includes: a power supply unit that provides a constant voltage and constant current power supply to the LED lamp beads in the LED lens module and a switching control unit that switches some of the LED lamp beads in the LED lens module to light up based on the low beam input signal, and switches at least some of the lamp beads in the LED lens module to light up based on the high beam input signal. Among them, the number of LED lamp beads that are lit based on the high beam input signal is greater than the number of LED lamp beads that are lit based on the low beam input signal. At this point, by integrating the high and low beam controller and the LED lens module and installing them near the same heat sink, the heat dissipation efficiency is optimized, and further based on different input signals, different numbers of LED lamp beads are accurately controlled to light up, thereby achieving accurate switching of high and low beams.

[0045] In some embodiments, see Figure 2 The switching control unit 103 includes a first LED switching circuit 201 , a second LED switching circuit 203 and a third LED switching circuit 205 .

[0046] Among them, the first LED switching circuit 201, the second LED switching circuit 203 and the third LED switching circuit 205 can be circuit units for controlling the lighting state of different LED lamp beads in the LED lens module according to the input signal. Exemplarily, the first LED switching circuit, the second LED switching circuit and the third LED switching circuit can include electronic switches, and under the control of receiving different input signals, the internal electronic switches are connected or disconnected accordingly, thereby causing different LED lamp beads in the LED lens module to light up or go out.

[0047] It should be understood that, under the premise of meeting the optimal optical performance, in order to extend the service life of components and keep the temperature of the controller low, all LED lamp beads in the LED lens module will not be lit at the same time. Therefore, the first LED switching circuit 201, the second LED switching circuit 203 and the third LED switching circuit 205 can be used to achieve specific lighting functions according to different lighting modes of the vehicle.

[0048] Specifically, the first LED switching circuit 201 and the second LED switching circuit 203 switch some LED lamp beads in the LED lens module to light up based on the low beam input signal; the first LED switching circuit 201, the second LED switching circuit 203 and the third LED switching circuit 205 switch at least some of the lamp beads in the LED lens module to light up based on the high beam input signal. That is, in the low beam mode, the first LED switching circuit 201 and the second LED switching circuit 203 will respond to the low beam input signal and work together to activate certain specific LED lamp beads to ensure normal lighting in the low beam mode; and in the high beam mode, in addition to the first LED switching circuit 201 and the second LED switching circuit 203 being activated, the third LED switching circuit 205 will also respond to the high beam input signal, work together with the first LED switching circuit 201 and the second LED switching circuit 203, and switch more LED lamp beads in the LED lens module to light up to provide stronger light and ensure normal lighting in the high beam mode.

[0049] In the above embodiment, three different LED switching circuits are used to accurately control the lighting and extinguishing of multiple LED lamp beads, ensuring that when needed, a longer-distance lighting is provided for the high-beam mode and appropriate close-range lighting is provided for the low-beam mode. At the same time, different control signals sent by the vehicle body controller are received through different LED switching circuits to control the high and low beam lights of the vehicle to light up in different ways, and smooth switching between the high and low beam lights is also achieved.

[0050] In some embodiments, see Figure 3 The first LED switching circuit 201 includes a first input module 301 , a second input module 303 , a first switch tube 305 , a first resistor 307 and a first transistor 309 .

[0051] Among them, the first input module 301 can be a module for receiving a control signal of a low beam. Exemplarily, when the vehicle needs to switch to a low beam mode, the first input module 301 receives a low beam input signal, thereby triggering other circuit elements in the first LED switching circuit 201 to perform corresponding operations. Similarly, the second input module 303 can be a module for receiving a control signal of a high beam. Exemplarily, when the vehicle needs to switch to a high beam mode, the second input module 303 receives a high beam input signal, thereby triggering other circuit elements in the first LED switching circuit 201 to perform corresponding operations.

[0052] The first switch tube 305 may be an NMOS tube, and is used to control its own conduction or shutdown according to different high and low voltages inputted at the control end. Specifically, the control end of the first switch tube 305 is connected to the first input module 301 through the first resistor 307, the first end of the first switch tube 305 is connected to the first switching end 310 of the LED lens module, and the second end of the first switch tube 305 is connected to the second switching end 320 of the LED lens module.

[0053] It can be understood that, since the two ends of the first switch tube 305 are respectively connected to the first switching end 310 and the second switching end 320 of the LED lens module, the first switch tube 305 can control the lighting and extinguishing states of the LED lamp beads based on its own on or off state. Exemplarily, when the first input module 301 inputs a low-beam input signal, the control end of the first switch tube 305 receives a high-level signal from the low-beam input signal, and the first switch tube 305 correspondingly changes to a conducting state, that is, the first switching end 310 of the LED lens module and the second switching end 320 of the LED lens module are short-circuited, so that some of the LED lamp beads contained in the first switching end 310 of the LED lens module and the second switching end 320 of the LED lens module are short-circuited and cannot be lit, so as to achieve normal lighting in the low-beam mode.

[0054] Further, the first transistor 309 in the first LED switching circuit 201 can also be a transistor regarded as a switch. Specifically, the base of the first transistor 309 is connected to the second input module 303, the emitter of the first transistor 309 is grounded, and the collector of the first transistor 309 is connected to the control end of the first switch tube 305 through the first resistor 307. Similarly, the first transistor 309 can be used to control its own conduction or shutdown according to the different high and low voltages input to its control end. Exemplarily, when the second input module 303 inputs the high-beam input signal, the base of the first transistor 309 receives a high-level signal from the high-beam input signal, and the first transistor 309 becomes a conducting state accordingly. After the first transistor 309 is turned on, its emitter will be turned on to the ground, causing the emitter voltage of the first transistor 309 to decrease.

[0055] It should be understood that, since the collector of the first transistor 309 is connected to the control end of the first switch tube 305 through the first resistor 307, the conduction of the first transistor 309 will also affect the conduction state of the first switch tube 305, that is, the first transistor 309 and the first switch tube 305 constitute a cascade switch control unit. Therefore, if the first transistor 309 is turned on and causes its emitter voltage to decrease, the voltage of the control end of the first switch tube 305 will be correspondingly lowered. Since the gate voltage of the first switch tube 305 is pulled down, the first switch tube 305 will be cut off. At this time, the first switching end 310 of the LED lens module and the second switching end 320 of the LED lens module are not short-circuited, so that some of the LED lamp beads contained therein are not disconnected and can be normally lit to achieve stronger light illumination in the high beam mode.

[0056] Optionally, the first LED switching circuit 201 also includes an input filter circuit 311 and an input protection circuit 313. The input filter circuit 311 includes two filter circuits, which are respectively used to filter the low beam input signal input by the first input module 301 and the high beam input signal input by the second input module 303. Specifically, the filter circuit includes a filter capacitor, a voltage regulator and a voltage divider resistor in parallel, one end of which is grounded, and the other end of a group of circuits for filtering the first input module 301 is connected between the base of the first transistor 309 and the first input module 301. Similarly, the other end of another group of circuits for filtering the second input module 303 is connected between the base of the first transistor 309 and the second input module 303. The input protection circuit 313 includes a voltage regulator diode, which is reversely connected between the input module and the input filter circuit 311, and is used to perform input protection on the circuit.

[0057] In the above implementation, cascade control based on different input signals is implemented through the first switch tube 305 and the first transistor 309, and the low beam and high beam modes can be flexibly and accurately switched according to the lighting requirements of the vehicle to improve the lighting efficiency. At the same time, the design of cascade control makes the circuit more stable during the switching process, avoiding voltage fluctuations caused by directly controlling large current loads.

[0058] In some embodiments, see Figure 4 The second LED switching circuit 203 includes a third input module 401 , a fourth input module 403 , a second switch tube 405 , a second resistor 407 and a second triode 409 .

[0059] Similarly, the third input module 401 may be a module for receiving a control signal of a low beam. Exemplarily, when the vehicle needs to switch to a low beam mode, the third input module 401 receives a low beam input signal, thereby triggering other circuit elements in the second LED switching circuit 203 to perform corresponding operations. The fourth input module 403 may be a module for receiving a control signal of a high beam. Exemplarily, when the vehicle needs to switch to a high beam mode, the fourth input module 403 receives a high beam input signal, thereby triggering other circuit elements in the second LED switching circuit 203 to perform corresponding operations.

[0060] The second switch tube 405 can also be an NMOS tube, which is used to control its own conduction or shutdown according to the different high and low voltages input by the control end. Specifically, the control end of the second switch tube 405 is connected to the third input module 401 through the second resistor 407, the first end of the second switch tube 405 is connected to the second switching end 320 of the LED lens module, and the second end of the second switch tube 405 is grounded. Similarly, when the third input module 401 inputs a low-beam input signal, the control end of the second switch tube 405 receives a high-level signal from the low-beam input signal and becomes conductive, that is, the second switching end 320 of the LED lens module is grounded, so that some LED lamp beads contained in the LED lens module are short-circuited and cannot be lit, so as to achieve normal lighting in the low-beam mode.

[0061] Further, the second triode 409 in the second LED switching circuit 203 can also be a transistor regarded as a switch. Specifically, the base of the second triode 409 is connected to the fourth input module 403, the emitter of the second triode 409 is grounded, and the collector of the second triode 409 is connected to the control end of the second switch tube 405 through the second resistor 407. Since the control end of the second switch tube 405 is connected to the collector of the second triode 409 through the second resistor 407, that is, in the same way, the second triode 409 and the second switch tube 405 also constitute a cascade switch control unit. Exemplarily, when the fourth input module 403 inputs the high-beam input signal, the base of the second triode 409 receives a high-level signal from the high-beam input signal, and correspondingly becomes a conducting state, so that its emitter is connected to the ground, thereby pulling down the voltage of the control end of the second switch tube 405, so that the second switch tube 405 is cut off. At this time, the second switching end 320 of the LED lens module is not grounded, so that some of the LED lamp beads contained therein are not broken and can be lit normally to achieve stronger light illumination in the high beam mode.

[0062] Optionally, the second LED switching circuit 203 further includes an input filter circuit 413 and an input protection circuit 415. The input filter circuit 413 includes a filter capacitor and a voltage divider resistor connected in parallel, one end of which is grounded and the other end is connected between the base of the second transistor 409 and the fourth input module 403, and is used to filter the high beam input signal input by the fourth input module 403. The input protection circuit 415 includes a transient suppression diode, one end of which is connected to the fourth input module 403 and the other end is grounded, and is used to protect the circuit from transient voltage spikes.

[0063] In the above implementation, the cascade control function of the MOS tube and the triode is designed based on different input signals, and the low beam and high beam modes can be flexibly and accurately switched according to the lighting requirements of the vehicle. At the same time, the input signal is filtered through the input filter circuit, which reduces the noise and interference in the signal and ensures the stability and reliability of the control signal. Furthermore, through the input protection circuit, input protection for the circuit is provided to prevent damage to the circuit due to excessive input voltage or reverse voltage, thereby improving the reliability of the entire system and reducing failures caused by external interference or power supply problems.

[0064] In some embodiments, see Figure 5 The third LED switching circuit 205 includes a fifth input module 501 , a third switch tube 503 , a fourth switch tube 505 , a first voltage regulator tube 507 and a third resistor 509 .

[0065] The fifth input module 501 may be a module for receiving a high beam control signal. For example, when the vehicle needs to switch to a high beam mode, the fifth input module 501 receives a high beam input signal, thereby triggering other circuit elements in the third LED switching circuit 205 to perform corresponding operations.

[0066] The third switch tube 503 can be a transistor for controlling its own conduction or shutoff according to different high and low voltages inputted from the control end. Specifically, the control end of the third switch tube 503 is connected to the fifth input module 501, and the first end of the third switch tube 503 is grounded. Further, the fourth switch tube 505 can also be a transistor for controlling its own conduction or shutoff according to different high and low voltages inputted from the control end. Specifically, the first end of the fourth switch tube 505 is connected to the first end of the first switch tube 305, that is, connected to the first switching end 310 of the LED lens module; the second end of the fourth switch tube 505 is connected to the third switching end 330 of the LED lens module; the control end of the fourth switch tube 505 is connected to the second end of the third switch tube 503.

[0067] Exemplarily, the third switch tube 503 can be an NMOS tube, and the fourth switch tube 505 can be a PMOS tube, which constitute a cascade switch control unit. When the fifth input module 501 inputs a high-beam input signal, the gate of the third switch tube 503 receives a high-level signal from the high-beam input signal and is correspondingly turned on and grounded, so that the fourth switch tube 505 is also correspondingly turned on, thereby short-circuiting the first switching end 310 of the LED lens module and the third switching end 330 of the LED lens module, so that some LED lamp beads included in the first switching end 310 of the LED lens module and the third switching end 330 of the LED lens module are short-circuited and cannot be lit, so as to cooperate with the first LED switching circuit 201 and the second LED switching circuit 203 to achieve stronger light illumination in the high-beam mode.

[0068] It can be understood that the first voltage regulator tube 507 and the third resistor 509 in the third LED switching circuit 205 can be used to provide protection and current limiting for the third switch tube 503 and the fourth switch tube 505. Specifically, the anode of the first voltage regulator tube 507 is connected to the control end of the fourth switch tube 505, and the cathode of the first voltage regulator tube 507 is connected to the second end of the fourth switch tube 505. The third resistor 509 is connected in parallel with the first voltage regulator tube 507. Exemplarily, the first voltage regulator tube 507 can be a freewheeling diode, which is used to protect the third switch tube 503 and the fourth switch tube 505 from the influence of reverse voltage spikes. That is, when the third switch tube 503 and the fourth switch tube 505 are turned off, due to their characteristics, the current therein cannot be stopped instantly, and a reverse electromotive force will be generated to damage the components. The first voltage regulator tube 507 can provide a path for the reverse current to circulate, thereby protecting the third switch tube 503 and the fourth switch tube 505 from damage. Furthermore, the third resistor 509 is connected in parallel with the first voltage regulator 507 to form a voltage protection circuit, which detects the voltage drop across the first voltage regulator 507 to monitor the state of the third LED switching circuit 205 to protect the components in the third LED switching circuit 205 from being damaged due to excessive current.

[0069] In the above embodiment, the lighting state of some LED lamp beads in the LED lens module is accurately controlled by the third LED switching circuit 205 to achieve the desired lighting effect while ensuring the optimal optical performance.

[0070] In some embodiments, see Figure 6 The LED lens module includes the first LED lamp bead to the tenth LED lamp bead.

[0071] Among them, the first LED lamp bead to the tenth LED lamp bead can all be LED light-emitting diodes, which can directly convert electrical energy into visible light when current passes through. Optionally, under the premise of meeting the optimal optical performance, the LED lamp bead can choose a high-brightness PIN LED to ensure that the same current input has a higher brightness and the electronic components generate less heat. Specifically, the first LED lamp bead, the fourth LED lamp bead and the seventh LED lamp bead are connected in series in sequence, the second LED lamp bead, the fifth LED lamp bead and the eighth LED lamp bead are connected in series in sequence, the third LED lamp bead, the sixth LED lamp bead, the tenth LED lamp bead and the ninth LED lamp bead are connected in series in sequence, there is a first node 601 between the fourth LED lamp bead and the seventh LED lamp bead, there is a second node 603 between the fifth LED lamp bead and the eighth LED lamp bead, there is a third node 605 between the tenth LED lamp bead and the ninth LED lamp bead, the first node 601, the second node 603 and the third node 605 are connected together as the second switching end 320 of the LED lens module, the node between the sixth LED lamp bead and the tenth LED lamp bead serves as the first switching end 310 of the LED lens module, and the node between the third LED lamp bead and the sixth LED lamp bead serves as the third switching end 330 of the LED lens module.

[0072] It can be understood that since the first switching end 310, the second switching end 320 and the third switching end 330 of the LED lens module are suitable for being connected to the first LED switching circuit 201, the second LED switching circuit 203 and the third LED switching circuit 205 in the high and low beam controller 120, the lighting states of the first LED lamp bead to the tenth LED lamp bead in the LED lens module can be controlled accordingly based on different input signals.

[0073] Exemplarily, when a low beam input signal is input to the high and low beam controller 120, the first switch tube 305 in the first LED switching circuit 201 will be turned on, thereby short-circuiting the first switching end 310 of the LED lens module and the second switching end 320 of the LED lens module. At the same time, the second switch tube 405 in the second LED switching circuit 203 will also be turned on, thereby grounding the second switching end 320 of the LED lens module. That is, the seventh LED lamp bead to the tenth LED lamp bead are short-circuited and cannot be lit. That is, in the low beam mode, at this time, only the first LED lamp bead to the sixth LED lamp bead of the LED lens module remain lit, achieving normal lighting in the low beam mode.

[0074] It is also understandable that when a high beam input signal is input to the high and low beam controller 120, the first triode 309 in the first LED switching circuit 201 will be turned on, pulling down the gate voltage of the first switch tube 305, so that the first switch tube 305 is turned off. At this time, the first switching end 310 of the LED lens module and the second switching end 320 of the LED lens module are not short-circuited. At the same time, the second triode 409 in the second LED switching circuit 203 will also be turned on, pulling down the gate voltage of the second switch tube 405, so that the second switch tube 405 is turned off. At this time, the second switching end 320 of the LED lens module is also not grounded. That is, at this time, the seventh LED lamp bead to the tenth LED lamp bead are short-circuited to maintain a normal lighting state. Further, the third LED switching circuit 205 in the high and low beam controller 120 will also control the third switch tube 503 inside it to be turned on based on the high beam input signal, so that the fourth switch tube 505 is also turned on and grounded accordingly. Thus, the first switching end 310 of the LED lens module and the third switching end 330 of the LED lens module are short-circuited, so that the sixth LED lamp bead cannot be lit. That is, in the high beam mode, only the sixth LED lamp bead of the LED lens module cannot be lit, and the first to fifth LED lamp beads and the seventh to tenth LED lamp beads are still in the lighting state, so as to achieve stronger light illumination in the high beam mode.

[0075] In the above embodiment, by controlling the lighting states of different LED lamp beads, flexible switching between the low beam and high beam modes of the vehicle is achieved. In the low beam mode, only some LED lamp beads are lit, while in the high beam mode, more LED lamp beads are lit to provide stronger lighting. At the same time, even in the high beam mode, not all the lamp beads in the LED lens module are lit at the same time, which reduces the power consumption of the high and low beam lamp device, thereby reducing the heat generated by the device and keeping the high and low beam lamp device working within a safe temperature range.

[0076] In some embodiments, see Figure 7a The power supply unit 101 includes an input protection circuit 710 , an input filter circuit 720 , a DC-DC conversion circuit 730 and an output filter circuit 740 .

[0077] The input protection circuit 710 may refer to a circuit loop for performing surge protection and reverse connection protection on the input power of the high and low beam controller to protect the components in the circuit from voltage spikes and surge currents in the input power. After the input power passes through the input protection circuit 710, it first enters the input filter circuit 720, wherein the input filter circuit 720 is suitable for filtering the input power. For example, please refer to Figure 7bThe input filter circuit 720 includes multiple filter capacitors and a filter inductor. Specifically, capacitors C4, C5, C9, C10, C11, C12, C21, C22, C23, C24 and C29 and inductor L2 constitute a π-shaped filter circuit for filtering the input power supply and removing high-frequency noise and interference in the power supply.

[0078] Furthermore, the input power is input to the DC-DC conversion circuit 730 after filtering. The DC-DC conversion circuit 730 is suitable for converting the filtered input power and outputting the power supply. Specifically, the DC-DC conversion circuit 730 can be a power conversion circuit that can convert the filtered input power into a specific power supply required. Exemplarily, depending on the relationship between the input voltage and the required output voltage, the DC-DC conversion circuit 730 can be a buck topology, a boost topology, a buck-boost topology, or an isolated conversion topology.

[0079] Finally, the power after being processed by the DC-DC conversion circuit 730 will continue to be input into the output filter circuit 740. Among them, the output filter circuit 740 can be a circuit loop for further filtering the power supply after being converted by the DC-DC conversion circuit 730 to ensure that the output voltage and current are more stable. Exemplarily, the output filter circuit 740 may include an LC filter composed of an inductor and a capacitor or other power filter. Taking the LC filter as an example, please refer to Figure 7c The output filter circuit 740 includes multiple filter capacitors and a filter inductor. Specifically, the LC filter circuit composed of capacitors C2, C6, C7, C8, C13, C25, C26 and C27 and the inductor L1 filters the power supply converted by the DC-DC conversion circuit 730 to reduce ripple and noise in the power supply, thereby providing a constant voltage and constant current power supply for the LED lamp beads.

[0080] In the above embodiment, the input protection circuit 710, the input filter circuit 720, the DC-DC conversion circuit 730 and the output filter circuit 740 are designed in series to process the input power supply, ultimately ensuring that the high and low beam controller 120 can obtain a stable and clean power supply suitable for its work from the input power supply provided by the body controller, while ensuring that the LED lens module 130 can obtain a constant voltage and constant current power supply, thereby ensuring the normal performance and reliability of the entire vehicle high and low beam device.

[0081] In some implementations, the DC-DC conversion circuit 730 uses a DC-DC buck chip to perform a buck conversion on the filtered input power.

[0082] The DC-DC buck chip may refer to a buck-type DC-DC converter, which is an integrated circuit chip used to convert a higher DC voltage into a lower DC voltage and provide a constant current and voltage power supply to each LED lamp bead in the LED lens module according to the specific needs of the circuit. Optionally, under the premise of meeting the optimal optical performance, the current required by each LED lamp bead can be set to 0.9A.

[0083] For example, please refer to Figure 8 , the input power VIN is input to the input end of the DC-DC buck chip U1 after filtering. The DC-DC buck chip will perform switching operations at a high frequency through its internal switching elements to periodically connect and disconnect the input power VIN. When the switching element is turned on, the input power VIN will store energy in the inductor. When the switching element is turned off, the energy stored in the inductor is released to the load through the freewheeling diode integrated in the DC-DC buck chip. In this process, the voltage of the inductor will continue to drop due to multiple on and off operations, thereby realizing the buck function based on the DC-DC buck chip. In addition, the DC-DC buck chip will also monitor the output voltage in real time through the feedback pin and compare it with its internal reference voltage. Finally, according to the comparison result, the DC-DC buck chip can dynamically adjust the switching frequency or duty cycle of the switching element to maintain a stable output voltage. Furthermore, in order to smooth the output voltage, capacitors can be connected in parallel around the DC-DC buck chip to filter out the voltage ripple caused by the switching operation and provide a stable DC output.

[0084] In the above embodiment, the DC-DC conversion circuit 730 uses a suitable DC-DC step-down chip according to the relationship between the input voltage and the required output voltage to convert a higher DC voltage into a lower DC voltage, and provides a constant current and constant voltage supply voltage for the entire circuit according to the specific needs of the circuit. This not only ensures the high efficiency of power conversion, but also reduces energy loss and provides a stable power supply.

[0085] In some embodiments, see Fig. 9 The input protection circuit 710 includes a transient voltage suppressor 901 , a first capacitor 903 , a third resistor 905 , a fifth switch 907 , a fourth resistor 909 , a fifth resistor 911 and a second voltage regulator 913 .

[0086] Optionally, the transient voltage suppressor 901 , the first capacitor 903 and the third resistor 905 form a protection circuit 910 , and the fifth switch 907 , the fourth resistor 909 , the fifth resistor 911 and the second voltage regulator 913 form an anti-reverse connection circuit 920 .

[0087] The transient voltage suppressor 901 may be a diode used to protect a circuit from sudden voltage or current spikes. Specifically, a first end of the transient voltage suppressor 901 is suitable for connecting to an input power supply, and a second end of the transient voltage suppressor 901 is grounded. When a transient high voltage appears in the input power supply, the transient voltage suppressor 901 will quickly turn on and clamp the overvoltage to a safe level, thereby protecting subsequent circuits.

[0088] The first capacitor 903 can be a filter capacitor for filtering high-frequency noise in the power supply. Specifically, the first capacitor 903 is connected in parallel with the transient voltage suppression tube 901. When a transient high voltage appears in the input power supply and causes the transient voltage suppression tube 901 to be turned on, the first capacitor 903 can provide it with additional current capacity to help it absorb transient energy.

[0089] The third resistor 905 may be a voltage-dividing resistor for limiting the current flowing through the capacitor. Specifically, the third resistor 905 is connected in parallel with the first capacitor 903 and works together to protect the circuit.

[0090] Further, the fifth switch tube 907 can be a transistor for controlling the on-off of current. Specifically, the first end of the fifth switch tube 907 is connected to the first end of the transient voltage suppression tube 901. Exemplarily, the fifth switch tube 907 can be a PMOS transistor capable of carrying a large current and voltage. When the positive and negative poles of the power supply are connected in reverse, the fifth switch tube 907 can prevent the current from flowing in the wrong direction because its source and drain can withstand a high reverse voltage, thereby protecting other components in the circuit from damage.

[0091] The fourth resistor 909 may be a resistor for limiting the current flowing through the fifth switch tube 907. Specifically, a first end of the fourth resistor 909 is connected to a second end of the fifth switch tube 907. Exemplarily, if the fifth switch tube 907 is a PMOS transistor, the fourth resistor 909 may be connected between the source and the drain of the fifth switch tube 907 to protect it from being damaged by excessive current.

[0092] The fifth resistor 911 may be a bias resistor for biasing the fifth switch tube 907. Specifically, the first end of the fifth resistor 911 is connected to the second end of the fourth resistor 909, and the fifth resistor 911 has a fourth node 915, the second end of the fifth resistor 911 is grounded, and the fourth node 915 is connected to the control end of the fifth switch tube 907. When the fifth switch tube 907 detects an abnormal voltage, the fifth resistor 911 may provide a bias voltage for its gate. At the same time, when the fifth switch tube 907 is turned off, the fifth resistor 911 may also discharge the gate.

[0093] The second voltage regulator tube 913 may be a voltage regulator diode providing a voltage clamping function. Specifically, the anode of the second voltage regulator tube 913 is connected to the fourth node 915, and the cathode of the second voltage regulator tube 913 is connected to the second end of the fifth switch tube 907. The second voltage regulator tube 913 works in conjunction with the fifth switch tube 907 to protect the circuit elements from voltage fluctuations when the input voltage increases abnormally.

[0094] In the above embodiment, the input protection circuit and the anti-reverse connection circuit work together to ensure the safety of the high and low beam controller 120 and the LED lens module 130 when facing potential threats such as external input power fluctuations, transient voltage spikes and power reverse connection. Furthermore, by applying these circuits, the reliability and durability of the entire vehicle high and low beam device are improved.

[0095] It should be understood that a vehicle high and low beam lamp device in the present embodiment is presented in the form of a functional unit, where the unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory that executes one or more software or fixed programs, and / or other devices that can provide the above functions. Each module in the above-mentioned vehicle high and low beam lamp device can be implemented in whole or in part by software, hardware and a combination thereof. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory in the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above-mentioned modules.

[0096] For the convenience of description, the above device is described in various units according to their functions. Of course, when implementing the present application, the functions of each unit can be implemented in the same or multiple software and / or hardware.

[0097] This embodiment also provides a vehicle, and the vehicle control method implements the content of the above-mentioned vehicle high and low beam lamp device. For the specific definition of the vehicle, please refer to the definition of the vehicle high and low beam lamp device above, which will not be repeated here.

[0098] The present application is described with reference to the flow chart and / or block diagram according to the embodiment of the present application. It should be understood that each flow process and / or box in the flow chart and / or block diagram, and the combination of the flow process and / or box in the flow chart and / or block diagram can be realized by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processing machine or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for realizing the function specified in one flow chart or multiple flows and / or one box or multiple boxes of the block diagram.

[0099] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0100] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0101] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0102] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. Since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0103] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

[0104] Although the embodiments of the present application are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A vehicle high and low beam lamp device, characterized in that: It includes a radiator, a high and low beam controller and an LED lens module, wherein the high and low beam controller and the LED lens module are adjacent to each other and arranged close to the radiator, and the high and low beam controller includes: a power supply unit and a switching control unit, wherein the power supply unit is configured to provide a constant voltage and constant current power supply to the LED lamp beads in the LED lens module, and the switching control unit is configured to switch on some of the LED lamp beads in the LED lens module based on a low beam input signal, and to switch on at least some of the lamp beads in the LED lens module based on a high beam input signal, wherein the number of LED lamp beads that are lit based on the high beam input signal is greater than the number of LED lamp beads that are lit based on the low beam input signal.

2. The vehicle high and low beam lamp device according to claim 1, characterized in that: The switching control unit includes a first LED switching circuit, a second LED switching circuit and a third LED switching circuit, wherein the first LED switching circuit and the second LED switching circuit switch some LED lamp beads in the LED lens module to light up based on the low beam input signal, and the first LED switching circuit, the second LED switching circuit and the third LED switching circuit switch at least some of the lamp beads in the LED lens module to light up based on the high beam input signal.

3. The vehicle high and low beam lamp device according to claim 2, characterized in that: The first LED switching circuit comprises: a first input module, the first input module being adapted to receive the low-beam input signal; a second input module, the second input module being adapted to receive the high beam input signal; A first switch tube, wherein a control end of the first switch tube is connected to the first input module through a first resistor, a first end of the first switch tube is connected to a first switching end of the LED lens module, and a second end of the first switch tube is connected to a second switching end of the LED lens module; A first transistor, wherein the base of the first transistor is connected to the second input module, the emitter of the first transistor is grounded, and the collector of the first transistor is connected to the control end of the first switch tube through the first resistor.

4. The vehicle high and low beam lamp device according to claim 3, characterized in that: The second LED switching circuit comprises: a third input module, the third input module being adapted to receive the low beam input signal; a fourth input module, the fourth input module being adapted to receive the high beam input signal; A second switch tube, wherein a control end of the second switch tube is connected to the third input module through a second resistor, a first end of the second switch tube is connected to a second switching end of the LED lens module, and a second end of the second switch tube is grounded; A second triode, wherein the base of the second triode is connected to the fourth input module, the emitter of the second triode is grounded, and the collector of the second triode is connected to the control end of the second switch tube through the second resistor.

5. The vehicle high and low beam lamp device according to claim 3, characterized in that: The third LED switching circuit comprises: a fifth input module, the fifth input module being adapted to receive the high beam input signal; A third switch tube, wherein a control end of the third switch tube is connected to the fifth input module, and a first end of the third switch tube is grounded; a fourth switch tube, wherein a first end of the fourth switch tube is connected to a first end of the first switch tube, a second end of the fourth switch tube is connected to a third switching end of the LED lens module, and a control end of the fourth switch tube is connected to a second end of the third switch tube; a first voltage regulator tube, wherein an anode of the first voltage regulator tube is connected to the control end of the fourth switch tube, and a cathode of the first voltage regulator tube is connected to the second end of the fourth switch tube; A third resistor is connected in parallel with the first voltage regulator tube.

6. The vehicle high and low beam lamp device according to any one of claims 1 to 5, characterized in that: The LED lens module includes first to tenth LED lamp beads, wherein the first LED lamp bead, the fourth LED lamp bead and the seventh LED lamp bead are connected in series in sequence, the second LED lamp bead, the fifth LED lamp bead and the eighth LED lamp bead are connected in series in sequence, the third LED lamp bead, the sixth LED lamp bead, the tenth LED lamp bead and the ninth LED lamp bead are connected in series in sequence, a first node is provided between the fourth LED lamp bead and the seventh LED lamp bead, a second node is provided between the fifth LED lamp bead and the eighth LED lamp bead, a third node is provided between the tenth LED lamp bead and the ninth LED lamp bead, the first node, the second node and the third node are connected together as the second switching end of the LED lens module, the node between the sixth LED lamp bead and the tenth LED lamp bead serves as the first switching end of the LED lens module, and the node between the third LED lamp bead and the sixth LED lamp bead serves as the third switching end of the LED lens module.

7. The vehicle high and low beam lamp device according to any one of claims 1 to 5, characterized in that: The power supply unit comprises: An input protection circuit, wherein the input protection circuit is suitable for performing surge protection and reverse connection protection on the input power supply of the high and low beam controller; An input filter circuit, wherein the input filter circuit is suitable for filtering the input power supply; A DC-DC conversion circuit, wherein the DC-DC conversion circuit is suitable for converting the input power after filtering and outputting the power supply; An output filter circuit, wherein the output filter circuit is suitable for filtering the power supply to provide the constant voltage and constant current power supply.

8. The vehicle high and low beam lamp device according to claim 7, characterized in that: The DC-DC conversion circuit uses a DC-DC buck chip to perform a buck conversion on the input power source that has been filtered.

9. The vehicle high and low beam lamp device according to claim 7, characterized in that: The input protection circuit comprises: A transient voltage suppression tube, wherein a first end of the transient voltage suppression tube is suitable for being connected to the input power supply, and a second end of the transient voltage suppression tube is grounded; A first capacitor, wherein the first capacitor is connected in parallel with the transient voltage suppression tube; a third resistor, the third resistor being connected in parallel with the first capacitor; a fifth switch tube, wherein a first end of the fifth switch tube is connected to a first end of the transient voltage suppression tube; a fourth resistor, wherein a first end of the fourth resistor is connected to a second end of the fifth switch tube; a fifth resistor, wherein a first end of the fifth resistor is connected to a second end of the fourth resistor and has a fourth node, a second end of the fifth resistor is grounded, and the fourth node is connected to a control end of the fifth switch tube; A second voltage regulator tube, wherein an anode of the second voltage regulator tube is connected to the fourth node, and a cathode of the second voltage regulator tube is connected to the second end of the fifth switch tube.

10. A vehicle, characterized in that: It comprises a vehicle high and low beam lamp device according to any one of claims 1 to 9.

Images