CN221004799U - Car light that light utilization ratio is high - Google Patents
Car light that light utilization ratio is high Download PDFInfo
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- CN221004799U CN221004799U CN202322753064.6U CN202322753064U CN221004799U CN 221004799 U CN221004799 U CN 221004799U CN 202322753064 U CN202322753064 U CN 202322753064U CN 221004799 U CN221004799 U CN 221004799U
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- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 34
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- 229910052709 silver Inorganic materials 0.000 claims abstract description 34
- 230000017525 heat dissipation Effects 0.000 claims abstract description 16
- 239000003990 capacitor Substances 0.000 claims description 44
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- 238000001816 cooling Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 6
- 230000000087 stabilizing effect Effects 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 238000005286 illumination Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 2
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- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
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Abstract
The utility model discloses a car lamp with high light utilization rate, which comprises a lens, a bracket, a heat dissipation frame, a silver bowl and an LED lamp, wherein the heat dissipation frame comprises a first mounting plate, a second mounting plate and heat dissipation fins; the first mounting plate is fixedly connected with a second mounting plate at one side far away from the bracket, and the second mounting plate is obliquely arranged relative to the first mounting plate; one side of the second mounting plate is fixedly connected with a plurality of LED lamps and a silver bowl, and the silver bowl is hollow semi-oval and covers the LED lamps; the second mounting plate is fixed with multiunit fin in the one side that keeps away from silver bowl. According to the utility model, the second mounting plate is obliquely arranged relative to the first mounting plate, so that the light projected by the LED lamp is concentrated at the center of the lens after being reflected by the silver bowl, the light is reduced from being reflected to the bracket below the lens by the silver bowl, the utilization rate of the light is increased, and the overall brightness of the car lamp is further increased.
Description
Technical Field
The utility model relates to the technical field of vehicle illumination, in particular to a car lamp with high light utilization rate.
Background
With the continuous development and maturation of LED (light emitting diode) manufacturing technology and the gradual decrease of production cost, LED light sources have been widely used in the fields of automotive lamps, special illumination lamps, public illumination and the like, and have great development potential, and are considered as the light sources with the most development prospect in the 21 st century. As an indispensable safety component for automobile driving, the automobile lamp not only relates to the external image of an automobile owner, but also is closely connected with safe driving under the condition of driving at night or other insufficient light, and plays an important role in the aspect of active safety of the automobile.
In the prior art, light projected by a light source is reflected to a lens through a silver bowl, and is refracted by the lens to irradiate outside the vehicle, so that the illumination of the vehicle lamp is realized. However, in the existing car lamp, after the light projected by the light source is reflected by the silver bowl, most of the light falls on the lower half part of the lens, even part of the light is reflected by the silver bowl to the support below the lens, and cannot be reflected to the lens, the light finally dissipates or becomes stray light to form a dark area, so that the regulation of car lamp regulation cannot be met, and in an environment with insufficient light, the car lamp brightness is insufficient, the judgment of a driver on the road condition in front is affected, and potential safety hazards exist, so that the utilization rate of the projected light of the light source needs to be improved, and the overall brightness of the car lamp is increased.
Disclosure of utility model
The automobile lamp with high light utilization rate is provided, the LED lamp projects light which is arranged obliquely relative to the first mounting plate through the second mounting plate, the light is concentrated in the center of the lens after being reflected by the silver bowl, the light is reduced to the bracket below the lens through the silver bowl, the utilization rate of the light is increased, and the overall brightness of the automobile lamp is further increased.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
The car light that the light utilization rate is high, including lens, support, heat-dissipating frame, silver bowl, LED lamp, the heat-dissipating frame includes first mounting plate, second mounting plate and fin, fixedly mount the support on the first mounting plate, fix the lens on the support; the first mounting plate is fixedly connected with a second mounting plate at one side far away from the bracket, and the second mounting plate is obliquely arranged relative to the first mounting plate; one side of the second mounting plate is fixedly connected with a plurality of LED lamps and a silver bowl, and the silver bowl is hollow semi-oval and covers the LED lamps; the second mounting plate is fixed with multiunit fin in the one side that keeps away from silver bowl.
Further, a fan is fixedly connected to one side, far away from the LED lamp, of the radiating fin.
Further, the heat dissipation frame is made of aluminum.
Further, an included angle between the second mounting plate and the first mounting plate is 65-85 degrees.
Further, the lens has a circular or elliptical shape with a part cut horizontally at the upper and lower ends or at one of the upper and lower ends.
Further, the LED lamp is electrically connected with an LED driving circuit, and the LED driving circuit drives the LED lamp to generate light.
Further, the LED driving circuit comprises a main connector J2 and a secondary connector J1 for connecting and disconnecting the circuit, a protection module for preventing current from flowing backward, an anti-interference module for filtering and stabilizing voltage, a driver U1, an over-temperature protection module, a current sampling module, an NMOS tube Q1, a follow current module and an LED lamp.
The grid electrode G of the NMOS tube Q1 is electrically connected with the DRV pin of the driver U1, the source electrode S of the NMOS tube Q1 is electrically connected with the current sampling module and then grounded, meanwhile, the source electrode S of the NMOS tube Q1 is electrically connected with the CS pin of the driver U1, the drain electrode D of the NMOS tube Q1 is electrically connected with the follow current module, the other end of the follow current module is electrically connected with the power VCC, two ends of the follow current module are respectively electrically connected with two ends of the LED lamp, continuous current is provided for the LED lamp, and two ends of the LED lamp are respectively electrically connected with the 2 pin and the 3 pin of the auxiliary connector J1; the DIM pin of the driver U1 is electrically connected with the over-temperature protection module and used for over-temperature protection, the TOFF pin of the driver U1 is electrically connected with one end of the capacitor C OFF and used for setting the turn-off time of the NMOS tube, the other end of the capacitor C OFF is electrically connected with the VDD pin of the driver U1, and the VDD pin of the driver U1 is electrically connected with the resistor R2 and then electrically connected with the power supply VCC so as to provide the driving voltage of the driver U1; and meanwhile, the VDD pin of the driver U1 is electrically connected with one end of the protection module and one end of the anti-interference module after being electrically connected with the resistor R2, the other end of the anti-interference module is electrically connected with the 1 pin of the main connector J2, the 1 pin and the 4 pin of the main connector J2 are electrically connected with the protection module, and the 2 pin and the 3 pin of the main connector J2 are grounded.
Further, the protection module comprises three schottky diodes (D5, D2 and D1) and a TVS tube TVS2, the anode of the schottky diode D5 is electrically connected with the 4 pin of the main connector J4, one end of the TVS tube TVS2 is electrically connected, the other end of the TVS tube TVS2 is grounded, and the cathode of the schottky diode D5 is electrically connected with the anode of the LED lamp; one end of the schottky diode D2 and the schottky diode D1 which are connected in parallel is electrically connected with the 1 pin of the main connector J4, and the other end of the schottky diode D2 is electrically connected with the anode of the LED lamp.
The anti-interference module comprises a polar capacitor C1, wherein the cathode of the polar capacitor C1 is electrically connected with a TVS tube TVS1, the cathode of the polar capacitor C1 is grounded, the other end of the TVS tube TVS1 is electrically connected with the 1 pin of the main connector J4, and the anode of the polar capacitor C1 is electrically connected with the anode of the LED lamp.
Further, the over-temperature protection module comprises a thermistor R3, one end of the thermistor R3 is electrically connected with a DIM pin of the driver U1, and the other end of the thermistor R3 is electrically connected with the resistor R1 and then grounded; the DIM pin of the driver U1 is also connected with the resistor R4 and then is electrically connected with the cathode of the zener diode ZD1, the anode of the zener diode ZD1 is grounded to play a role in voltage stabilization, and the cathode of the zener diode ZD1 is also electrically connected with the VDD pin of the driver U1;
The current sampling module comprises six sampling resistors (R5, R6, R7, R8, R9 and R10) which are connected in parallel, one end of each of the six sampling resistors (R5, R6, R7, R8, R9 and R10) is electrically connected with a source S of the NMOS tube Q1 and a CS pin of the driver U1 after being connected in parallel, and the other end of each of the six sampling resistors is grounded;
The capacitor C OFF comprises two capacitors (C2 and C3) which are connected in series, the two ends of the capacitor C2 and the capacitor C3 are respectively and electrically connected with a TOFF pin and a VDD pin of the driver U1 after being connected in series, and a circuit between the capacitor C2 and the capacitor C3 is grounded;
The freewheeling module comprises an inductor L1 and Schottky diodes D3 and D4 which are connected in parallel, wherein the anode of the Schottky diode D3 and the Schottky diode D4 is electrically connected with the drain electrode D of the NMOS tube Q1 and one end of the inductor L1 after being connected in parallel, the other end of the inductor L1 is electrically connected with the cathode of the LED lamp, and the cathode of the Schottky diode D3 and the Schottky diode D4 is electrically connected with the anode of the LED lamp after being connected in parallel; the LED lamp comprises a plurality of light emitting diodes which are connected in series, and the two ends of the LED lamp are connected in parallel with a capacitor C4 for filtering and stabilizing the voltage at the two ends of the LED lamp.
Further, the LED driving circuit is electrically connected with the fan, so that the fan works when the LED driving circuit works.
The beneficial effects of the utility model are as follows:
According to the utility model, the second mounting plate is obliquely arranged relative to the first mounting plate, so that the light projected by the LED lamp is concentrated at the center of the lens after being reflected by the silver bowl, the light is reduced from being reflected to the bracket below the lens by the silver bowl, the utilization rate of the light is increased, and the overall brightness of the car lamp is further increased. Through detection, an LED lamp in the conventional car lamp shown in fig. 7 is reflected to a lens through a silver bowl, and is converged by the lens and then emitted, and the luminous intensity reaches 12 ten thousand candelas; when the LED lamp is the same as the existing car lamp under other conditions, the LED lamp is reflected to the lens through the silver bowl, and is projected out after being condensed through the lens, the luminous intensity reaches 16 ten thousand candelas, the illumination intensity is obviously enhanced, and the overall brightness of the car lamp is obviously enhanced. In addition, the fan cooperates with the aluminum part cooling frame, the cooling area of the plurality of groups of cooling fins is large, heat generated by the LED lamp can be taken away better, and the fan blows air against the cooling fins, so that on one hand, cold air blown by the fan can take away heat on the cooling fins, on the other hand, air flow around the cooling frame can be increased, and the cooling effect is improved. The LED driving circuit is provided with the protection module, the anti-interference module, the over-temperature protection module and the follow current module, so that the normal operation of the circuit is ensured, and the circuit is prevented from being failed
Drawings
Fig. 1 is a schematic perspective view of a vehicle lamp with high light utilization rate according to the present utility model.
Fig. 2 is a schematic diagram of the high light utilization vehicle lamp with the silver bowl removed.
Fig. 3 is a schematic perspective view of a vehicle lamp with high light utilization rate according to the present utility model.
FIG. 4 is a schematic view of the high light utilization vehicle lamp eliminating fan of the present utility model.
Fig. 5 is a front view of a lamp having a high light utilization rate according to the present utility model.
FIG. 6 is a schematic diagram showing the reflection of light from a vehicle lamp with high light utilization in accordance with the present utility model.
Fig. 7 is a schematic diagram of light reflection of a conventional car lamp.
Fig. 8 is a schematic view of a lens of a high light utilization vehicle lamp according to the present utility model.
Fig. 9 is a second schematic lens diagram of the high light utilization vehicle lamp of the present utility model.
Fig. 10 is a diagram of an LED driving circuit of the lamp of the present utility model having high light utilization.
In the figure, 1 part of lens, 2 parts of bracket, 3 parts of heat dissipation frame, 31 parts of first mounting plate, 32 parts of second mounting plate, 33 parts of heat dissipation sheet, 4 parts of silver bowl, 5 parts of fan and 6 parts of LED lamp.
Detailed Description
The present utility model will be described in further detail with reference to the drawings, but the scope of the utility model is not limited thereto.
As shown in fig. 1-4, the car lamp with high light utilization rate comprises a lens 1, a bracket 2, a heat dissipation frame 3, a silver bowl 4 and an LED lamp 6, wherein the heat dissipation frame 3 comprises a first mounting plate 31, a second mounting plate 32 and a heat dissipation sheet 33, the bracket 2 is fixedly arranged on the first mounting plate 31, the lens 1 is fixed on the bracket 2, and light can be radiated to the outside of the car after being refracted by the lens 1, so that illumination of the car is realized. The first mounting plate 31 is fixedly connected with a second mounting plate 32 at one side far away from the bracket 2, one side of the second mounting plate 32 is fixedly connected with a plurality of LED lamps 6 and a silver bowl 4, and the silver bowl 4 is hollow semi-elliptical and covers the LED lamps 6 and is used for reflecting light projected by the LED lamps 6; referring to fig. 5 and 6, the second mounting plate 32 is obliquely arranged relative to the first mounting plate 31, and an included angle between the second mounting plate 32 and the first mounting plate 31 is 65 ° -85 °, so that compared with the existing car lamp shown in fig. 7, light projected by the LED lamp 6 is concentrated in the center of the lens 1 after being reflected by the silver bowl 4, light is reduced from being reflected by the silver bowl to a bracket below the lens, the utilization rate of the light is increased, and the overall brightness of the car lamp is further increased. Through detection, an LED lamp 6 in the conventional car lamp shown in fig. 7 is reflected to the lens 1 through the silver bowl 4, and is condensed by the lens 1 and then emitted, and the luminous intensity reaches 12 ten thousand candelas; when the conditions are the same as those of the existing car lamp, the car lamp with high light utilization rate is adopted, the LED lamp 6 is reflected to the lens 1 through the silver bowl 4, is condensed by the lens 1 and then is emitted, the luminous intensity reaches 16 ten thousand candelas, the illumination intensity is obviously enhanced, and the overall brightness of the car lamp is obviously enhanced. As shown in fig. 8 and 9, when the light projected by the LED lamp 6 is reflected by the silver bowl 4 and then concentrated at the center of the lens 1, the light utilization rate of the light is significantly improved, and the lens 1 is set to be round or oval with one of the upper and lower ends or one of the upper and lower ends being cut off a part horizontally, so that the size of the lamp can be reduced, and the lamp can be designed and installed on a vehicle conveniently. The second mounting panel 32 is fixed with multiunit fin 33 in the one side that keeps away from silver bowl 4, and one side fixedly connected with fan 5 that keeps away from LED lamp 6 on the fin 33, and the heat dissipation frame 3 material adopts aluminium, and aluminum part heat conductivility is good, can take away the heat that LED lamp 6 produced better, multiunit fin 33 radiating area is big, and fan 5 bloies against fin 33, and the heat on fin 33 can be taken away to the cold wind that fan 5 bloied on the one hand, and on the other hand can increase the air flow around the heat dissipation frame 3, improves the radiating effect.
The LED lamp 6 is electrically connected with an LED driving circuit, the LED driving circuit drives the LED lamp 6 to generate light, as shown in fig. 10, the LED driving circuit comprises a main connector J2 and an auxiliary connector J1 for connecting and disconnecting the circuit, a protection module for preventing current from flowing backward, an anti-interference module for filtering and stabilizing voltage, a driver U1, an over-temperature protection module, a current sampling module, an NMOS tube Q1, a follow current module and the LED lamp 6.
The grid G of the NMOS tube Q1 is electrically connected with the DRV pin of the driver U1, the source S of the NMOS tube Q1 is electrically connected with the current sampling module and then grounded, meanwhile, the source S of the NMOS tube Q1 is electrically connected with the CS pin of the driver U1, the drain D of the NMOS tube Q1 is electrically connected with the follow current module, the other end of the follow current module is electrically connected with the power VCC, two ends of the follow current module are respectively electrically connected with two ends of the LED lamp 6, continuous current is provided for the LED lamp 6, and two ends of the LED lamp 6 are respectively electrically connected with the 2 pin and the 3 pin of the auxiliary connector J1. ; the LED lamp 6 comprises a plurality of light emitting diodes which are connected in series, and the two ends of the LED lamp 6 are connected in parallel with a capacitor C4 for filtering and stabilizing the voltage at the two ends of the LED lamp 6. The DIM pin of the driver U1 is electrically connected with the over-temperature protection module and used for over-temperature protection, the TOFF pin of the driver U1 is electrically connected with one end of the capacitor C OFF and used for setting the turn-off time of the NMOS tube, and the turn-off time T OFF is as follows: t OFF＝0.51*150KΩ*(COFF+8pF)+TD, wherein T D = 61ns. The capacitor C OFF comprises two capacitors (C2 and C3) which are connected in series, the two ends of the capacitor C2 and the capacitor C3 are respectively and electrically connected with the TOFF pin and the VDD pin of the driver U1 after being connected in series, a circuit between the capacitor C2 and the capacitor C3 is grounded, the last withstand voltage value of the capacitor C2 and the capacitor C3 can be improved after being connected in series, the stability of the capacitor C2 and the capacitor C3 is improved, and the loss of the capacitor C2 and the capacitor C3 is reduced. Wherein, the capacitance c2=10μf, and the capacitance c3=22pf. The VDD pin of the driver U1 is electrically connected to the resistor R2 and then to the power VCC to provide a driving voltage for the driver U1. And meanwhile, the VDD pin of the driver U1 is electrically connected with one end of the protection module and one end of the anti-interference module after being electrically connected with the resistor R2, the other end of the anti-interference module is electrically connected with the 1 pin of the main connector J2, the 1 pin and the 4 pin of the main connector J2 are electrically connected with the protection module, and the 2 pin and the 3 pin of the main connector J2 are grounded.
The protection module comprises three Schottky diodes (D5, D2 and D1) and a TVS tube TVS2, wherein the anode of the Schottky diode D5 is electrically connected with the 4 pins of the main connector J4, one end of the TVS tube TVS2 is electrically connected, the other end of the TVS tube TVS2 is grounded, the cathode of the Schottky diode D5 is electrically connected with the anode of the LED lamp 6, and the TVS tube TVS2 can inhibit instant pulse and is used for protecting electronic equipment from being damaged by overvoltage and overcurrent. One end of the schottky diode D2 and the schottky diode D1 which are connected in parallel is electrically connected with the 1 pin of the main connector J4, and the other end is electrically connected with the anode of the LED lamp 6. The protection module can prevent current from flowing backwards to protect the circuit, and in addition, the Schottky diode has the characteristics of high switching speed, low forward voltage and low coupling capacity. In addition, the plurality of Schottky diodes are connected in parallel, so that the current processing capacity can be improved, and the Schottky diodes can be prevented from being burnt out due to overlarge current.
The anti-interference module comprises a polar capacitor C1, wherein the cathode of the polar capacitor C1 is electrically connected with a TVS tube TVS1, the cathode of the polar capacitor C1 is grounded, the other end of the TVS tube TVS1 is electrically connected with the 1 pin of the main connector J4, the anode of the polar capacitor C1 is electrically connected with the anode of the LED lamp 6, and the TVS tube TVS1 can inhibit instant pulse and is used for protecting electronic equipment from being damaged by overvoltage and overcurrent.
The over-temperature protection module comprises a thermistor R3, one end of the thermistor R3 is electrically connected with a DIM pin of the driver U1, the other end of the thermistor R3 is electrically connected with the resistor R1 and then grounded, and the over-temperature protection module plays a role in over-temperature protection of a circuit and enhances the overall stability. The DIM pin of the driver U1 is also connected with the resistor R4 and then is electrically connected with the cathode of the zener diode ZD1, the anode of the zener diode ZD1 is grounded to play a role in voltage stabilization, and the cathode of the zener diode ZD1 is also electrically connected with the VDD pin of the driver U1.
The current sampling module comprises six sampling resistors (R5, R6, R7, R8, R9 and R10) which are connected in parallel, one ends of the six sampling resistors (R5, R6, R7, R8, R9 and R10) are electrically connected with a source S of the NMOS tube Q1 and a CS pin of the driver U1 after being connected in parallel, and the other ends of the six sampling resistors are grounded and used for current sampling, so that loop current can be monitored. The adoption of a plurality of sampling resistors can reduce the current born by a single sampling resistor and avoid damage caused by overload of the resistor. The resistances of the six sampling resistors (R5, R6, R7, R8, R9, R10) are 330mΩ,500 mΩ, respectively. The driving current of the LED lamp 6 can be controlled by adjusting the resistance of the external current sampling module, so that the brightness of the LED lamp 6 reaches the expected constant brightness.
The freewheeling module comprises an inductor L1 and Schottky diodes D3 and D4 which are connected in parallel, wherein anodes of the Schottky diodes D3 and D4 are electrically connected with a drain electrode D of an NMOS tube Q1 and one end of the inductor L1 after being connected in parallel, the other end of the inductor L1 is electrically connected with a cathode of an LED lamp 6, and cathodes of the Schottky diodes D3 and D4 are electrically connected with an anode of the LED lamp 6 after being connected in parallel. When the NMOS tube Q1 is in a conducting state, the power supply VCC charges the inductor L1 when the LED lamp 6 is electrified, the current flowing through the inductor gradually increases along with the charging time, when the voltage at two ends of the current sampling module is reduced to a threshold voltage VCS_TH, wherein VCS_TH is set to 255mV, and the control circuit enables the DRV output end to be low level and turns off the NMOS tube Q1. When the NMOS transistor Q1 is in the off state, the inductor L1 discharges the LED lamp 6. After the NMOS transistor Q1 is turned off for a fixed time T OFF, it is turned back on again, and the above turn-on and turn-off processes are repeated. When the current of the inductive load suddenly changes or decreases, abrupt voltage is generated at two ends of the inductive load, the current of the inductor L1 is gradually changed by matching with the Schottky diode D3 and the Schottky diode D4, and the occurrence of the abrupt voltage is avoided, so that the normal operation of the circuit is prevented from being influenced.
The LED driving circuit is also electrically connected with the fan 5, so that the fan 5 works while the LED driving circuit works, namely the main lamp 71 and the fan 5 work synchronously, and the heat dissipation of the LED lamp 6 is facilitated.
The examples are preferred embodiments of the present utility model, but the present utility model is not limited to the above-described embodiments, and any obvious modifications, substitutions or variations that can be made by one skilled in the art without departing from the spirit of the present utility model are within the scope of the present utility model.
Claims (10)
1. A car light that light utilization ratio is high, its characterized in that: the LED lamp comprises a lens (1), a bracket (2), a heat dissipation frame (3), a silver bowl (4) and an LED lamp (6), wherein the heat dissipation frame (3) comprises a first mounting plate (31), a second mounting plate (32) and heat dissipation fins (33), the bracket (2) is fixedly arranged on the first mounting plate (31), and the lens (1) is fixed on the bracket (2); the first mounting plate (31) is fixedly connected with a second mounting plate (32) at one side far away from the bracket (2), and the second mounting plate (32) is obliquely arranged relative to the first mounting plate (31); one side of the second mounting plate (32) is fixedly connected with a plurality of LED lamps (6) and a silver bowl (4), and the silver bowl (4) is hollow semi-elliptical and covers the LED lamps (6); the second mounting plate (32) is fixed with a plurality of groups of cooling fins (33) at one side far away from the silver bowl (4).
2. The high light utilization vehicle lamp of claim 1, wherein: and one side, far away from the LED lamp (6), of the radiating fin (33) is fixedly connected with a fan (5).
3. The high light utilization vehicle lamp of claim 1, wherein: the heat dissipation frame (3) is made of aluminum.
4. The high light utilization vehicle lamp of claim 1, wherein: the included angle between the second mounting plate (32) and the first mounting plate (31) is 65-85 degrees.
5. The high light utilization vehicle lamp of claim 1, wherein: the lens (1) is round or oval with one of the upper and lower ends or one of the upper and lower ends cut off a part horizontally.
6. The high light utilization vehicle lamp of claim 1, wherein: the LED lamp (6) is electrically connected with an LED driving circuit, and the LED driving circuit drives the LED lamp (6) to generate light.
7. The high-light-utilization vehicle lamp of claim 6, wherein: the LED driving circuit comprises a main connector J2 and a secondary connector J1 for connecting and disconnecting the circuit, a protection module for preventing current from flowing backward, an anti-interference module for filtering and stabilizing voltage, a driver U1, an over-temperature protection module, a current sampling module, an NMOS tube Q1, a follow current module and an LED lamp (6);
The grid electrode G of the NMOS tube Q1 is electrically connected with the DRV pin of the driver U1, the source electrode S of the NMOS tube Q1 is electrically connected with the current sampling module and then grounded, meanwhile, the source electrode S of the NMOS tube Q1 is electrically connected with the CS pin of the driver U1, the drain electrode D of the NMOS tube Q1 is electrically connected with the follow current module, the other end of the follow current module is electrically connected with the power VCC, two ends of the follow current module are respectively electrically connected with two ends of the LED lamp (6) to provide continuous current for the LED lamp (6), and two ends of the LED lamp (6) are respectively electrically connected with the 2 pin and the 3 pin of the auxiliary connector J1; the DIM pin of the driver U1 is electrically connected with the over-temperature protection module and used for over-temperature protection, the TOFF pin of the driver U1 is electrically connected with one end of the capacitor C OFF and used for setting the turn-off time of the NMOS tube, the other end of the capacitor C OFF is electrically connected with the VDD pin of the driver U1, and the VDD pin of the driver U1 is electrically connected with the resistor R2 and then electrically connected with the power supply VCC so as to provide the driving voltage of the driver U1; and meanwhile, the VDD pin of the driver U1 is electrically connected with one end of the protection module and one end of the anti-interference module after being electrically connected with the resistor R2, the other end of the anti-interference module is electrically connected with the 1 pin of the main connector J2, the 1 pin and the 4 pin of the main connector J2 are electrically connected with the protection module, and the 2 pin and the 3 pin of the main connector J2 are grounded.
8. The high-light-utilization vehicle lamp of claim 7, wherein: the protection module comprises three Schottky diodes (D5, D2 and D1) and a TVS tube TVS2, wherein the anode of the Schottky diode D5 is electrically connected with the 4 pin of the main connector J4, one end of the TVS tube TVS2 is electrically connected, the other end of the TVS tube TVS2 is grounded, and the cathode of the Schottky diode D5 is electrically connected with the anode of the LED lamp (6); one end of the Schottky diode D2 and one end of the Schottky diode D1 are electrically connected with the 1 pin of the main connector J4 after being connected in parallel, and the other end of the Schottky diode D2 and the other end of the Schottky diode D1 are electrically connected with the anode of the LED lamp (6);
The anti-interference module comprises a polar capacitor C1, wherein the cathode of the polar capacitor C1 is electrically connected with a TVS tube TVS1, the cathode of the polar capacitor C1 is grounded, the other end of the TVS tube TVS1 is electrically connected with a 1 pin of a main connector J4, and the anode of the polar capacitor C1 is electrically connected with the anode of an LED lamp (6).
9. The high-light-utilization vehicle lamp of claim 7, wherein: the over-temperature protection module comprises a thermistor R3, one end of the thermistor R3 is electrically connected with a DIM pin of the driver U1, and the other end of the thermistor R3 is electrically connected with the resistor R1 and then grounded; the DIM pin of the driver U1 is also connected with the resistor R4 and then is electrically connected with the cathode of the zener diode ZD1, the anode of the zener diode ZD1 is grounded to play a role in voltage stabilization, and the cathode of the zener diode ZD1 is also electrically connected with the VDD pin of the driver U1;
The current sampling module comprises six sampling resistors (R5, R6, R7, R8, R9 and R10) which are connected in parallel, one end of each of the six sampling resistors (R5, R6, R7, R8, R9 and R10) is electrically connected with a source S of the NMOS tube Q1 and a CS pin of the driver U1 after being connected in parallel, and the other end of each of the six sampling resistors is grounded;
The capacitor C OFF comprises two capacitors (C2 and C3) which are connected in series, the two ends of the capacitor C2 and the capacitor C3 are respectively and electrically connected with a TOFF pin and a VDD pin of the driver U1 after being connected in series, and a circuit between the capacitor C2 and the capacitor C3 is grounded;
The freewheeling module comprises an inductor L1 and Schottky diodes D3 and D4 which are connected in parallel, wherein the anode of the Schottky diode D3 and the Schottky diode D4 is electrically connected with the drain electrode D of the NMOS tube Q1 and one end of the inductor L1 after being connected in parallel, the other end of the inductor L1 is electrically connected with the cathode of the LED lamp (6), and the cathode of the Schottky diode D3 and the Schottky diode D4 is electrically connected with the anode of the LED lamp (6) after being connected in parallel; the LED lamp (6) comprises a plurality of light emitting diodes which are connected in series, and the two ends of the LED lamp (6) are connected in parallel with a capacitor C4 for filtering and stabilizing the voltage at the two ends of the LED lamp (6).
10. The high-light-utilization vehicle lamp of claim 7, wherein: the LED driving circuit is also electrically connected with the fan (5), so that the fan (5) works while the LED driving circuit works.
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