CN216556957U - Car LED lamp circuit, circuit board and car light - Google Patents
Car LED lamp circuit, circuit board and car light Download PDFInfo
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- CN216556957U CN216556957U CN202123298260.6U CN202123298260U CN216556957U CN 216556957 U CN216556957 U CN 216556957U CN 202123298260 U CN202123298260 U CN 202123298260U CN 216556957 U CN216556957 U CN 216556957U
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Abstract
The utility model belongs to the technical field of automobile lighting, and particularly relates to an automobile LED lamp circuit, which comprises: the power input circuit is used for supplying power to the automobile LED lamp circuit; a light emitting circuit comprising at least one light emitting diode, the light emitting diode connected to the power input circuit; the LED lamp driving circuit comprises an LED lamp driving chip and a second resistor, the LED lamp driving chip is connected with the power input circuit and the light emitting circuit, one end of the second resistor is connected with the LED lamp driving chip, and the other end of the second resistor is grounded; the switch circuit is connected with the light-emitting circuit and the LED lamp driving circuit and is used for controlling the on and off of the light-emitting circuit; the loop formed by the light-emitting circuit discharges, the current is automatically reduced, temperature control is further achieved, and the effect of reducing the temperature of the automobile LED lamp is achieved.
Description
Technical Field
The utility model belongs to the technical field of automobile illumination, and particularly relates to an automobile LED lamp circuit, a circuit board and an automobile lamp.
Background
The automobile headlamp, also called as an automobile headlamp and an automobile LED daytime running light, is used as an eye of an automobile, is not only related to the external image of an automobile owner, but also is closely related to safe driving at night or under bad weather conditions. The use and maintenance of the vehicle lamp are not negligible.
At present, car light on the market is in the course of the work, because it is in confined work environment, and the luminous of LED lamp can lead to inside higher heat that produces, is in the too high environment of heat for a long time and has reduced the life of LED lamp, has increased user use cost. Therefore, it is necessary to design an automotive LED lamp circuit, a circuit board and an automotive lamp.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an automobile LED lamp circuit, a circuit board and an automobile lamp, and aims to solve the technical problems that in the prior art, the service life of an LED lamp is shortened and the use cost of a user is increased due to overhigh internal temperature of the automobile lamp.
In order to achieve the above object, an embodiment of the present invention provides an automotive LED lamp circuit, including:
the power input circuit is used for supplying power to the automobile LED lamp circuit;
the light-emitting circuit comprises at least one light-emitting diode, and the light-emitting diode is connected with the power input circuit;
the LED lamp driving circuit comprises an LED lamp driving chip and a second resistor, the LED lamp driving chip is connected with the power input circuit and the light emitting circuit, one end of the second resistor is connected with the LED lamp driving chip, and the other end of the second resistor is grounded;
and the switch circuit is connected with the light-emitting circuit and the LED lamp driving circuit and is used for controlling the on and off of the light-emitting circuit.
Optionally, the switch circuit includes a first triode, a first inductor, a second diode and a second resistor, the base of the first triode is connected to the first pin of the LED lamp driver chip, the emitter of the first triode is grounded through a second resistor, the collector of the first triode is connected to one end of the first inductor and one end of the second diode, the other end of the second diode is grounded, the other end of the first inductor is connected to the light emitting diode, one end of the second resistor is connected to the sixth pin of the LED lamp driver chip, and the other end of the second resistor is grounded.
Optionally, the LED lamp circuit is further provided with a fan connection end, the fan connection end includes a fan positive connection end and a fan negative connection end, the fan positive connection end is connected to the power input circuit, and the fan negative connection end is connected to one end of the first inductor.
Optionally, the power input circuit includes a power input end, a second electrolytic capacitor, a fourth resistor, a fourth capacitor and a first diode, one end of the second electrolytic capacitor, one end of the fourth resistor and one end of the first diode are connected to the power input end, the other end of the second electrolytic capacitor and the other end of the first diode are grounded, the other end of the fourth resistor is connected to one end of the fourth capacitor, the other end of the fourth capacitor is grounded, and the power input end is connected to an external power supply.
A circuit board comprises the automobile LED lamp circuit.
Optionally, the first inductor has a size of 10mm by 5 mm.
Optionally, the thickness of the circuit board is 1.2 mm.
Optionally, the circuit board includes a plurality of components, and a plurality of the components are respectively arranged on two sides of the LED lamp circuit board.
A vehicle lamp includes the circuit board.
Optionally, the vehicle lamp further comprises a vehicle lamp base, a heat dissipation assembly and a light emitting assembly, wherein the vehicle lamp base is connected with the heat dissipation assembly and the light emitting assembly; the car lamp base is provided with a car lamp clamping seat, and the car lamp clamping seat is provided with a plurality of hand blocks; the light-emitting component comprises an LED lamp shell, a circuit board and an LED lamp, the LED lamp shell is sleeved on the top of the car lamp base, a light-emitting hole is formed in the end part of the LED lamp shell, the circuit board is fixedly installed in the LED lamp shell, and the LED lamp is welded on the circuit board and emits light to the outside through the light-emitting hole; the heat dissipation assembly comprises a heat dissipation pipe, heat dissipation fins and a heat dissipation fan, the heat dissipation pipe is sleeved with the bottom of the car lamp base, a plurality of heat dissipation fins are evenly arranged on the side wall of the heat dissipation pipe, the heat dissipation fan is fixed to the bottom of the heat dissipation pipe, the bottoms of the heat dissipation fins are connected with a heat dissipation cover to form a containing cavity, and the heat dissipation fan is contained in the containing cavity.
One or more technical schemes in the automobile LED lamp circuit provided by the embodiment of the utility model at least have one of the following technical effects:
when the switch circuit is in a conducting state, the power input circuit is charged through the light-emitting circuit and the switch circuit, a temperature control setting is integrated in the LED lamp driving chip, when the LED lamp driving chip detects that the temperature is close to 115-120 ℃, the control output end of the LED lamp driving chip is changed into a low level and the switch circuit is turned off, when the switch circuit is in a turn-off state, the loop formed by the light-emitting circuit per se discharges, the current is automatically reduced, the temperature control is further realized, and the effect of reducing the temperature of the automobile LED lamp is achieved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic circuit diagram of an automotive LED lamp circuit according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a vehicular lamp according to an embodiment of the present invention;
FIG. 3 is an exploded view of the vehicular lamp according to the embodiment of the present invention;
fig. 4 is a schematic structural diagram of a circuit board according to an embodiment of the present invention;
fig. 5 is a side view of a circuit board according to an embodiment of the utility model.
Wherein, in the figures, the respective reference numerals:
power input circuit-100 light emitting circuit-200 LED lamp driving circuit-300
Switch circuit-400 lamp base-500 lamp clamping seat-510
Hand block-511 heat dissipation assembly-600 heat dissipation pipe-610
Heat sink-620 heat dissipation fan-630 heat dissipation cover-640
Accommodating cavity-650 light emitting assembly-700 LED Lamp housing-710
Light emitting holes-711 circuit board-720 LED lamp-730.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the embodiments of the present invention, and should not be construed as limiting the utility model.
In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
In one embodiment of the present invention, as shown in fig. 1, there is provided an automotive LED lamp circuit comprising:
the power supply input circuit 100, the power supply input circuit 100 is used for supplying power to the automobile LED lamp circuit;
a light emitting circuit 200, wherein the light emitting circuit 200 comprises at least one light emitting diode, and the light emitting diode is connected with the power input circuit 100;
the LED lamp driving circuit 300, the LED lamp driving circuit 300 includes an LED lamp driving chip U1 and a second resistor R2, the LED lamp driving chip U1 is connected to the power input circuit 100 and the light emitting circuit 200, one end of the second resistor R2 is connected to a sixth pin of the LED lamp driving chip U1, the other end of the second resistor R2 is grounded, and the second resistor R2 is a current detection resistor;
the switch circuit 400 is connected to the light emitting circuit 200 and the LED lamp driving circuit 300, and the switch circuit 400 is used to control the light emitting circuit 200 to be turned on and off.
When switch circuit 400 is in the on state, power input circuit 100 passes through luminescent circuit 200 with switch circuit 400 charges, just the integrated control by temperature change setting in LED lamp driver chip U1, works as when LED lamp driver chip U1 detects that the temperature is close 115 to 120 degrees, LED lamp driver chip U1 control output becomes low level and shuts off switch circuit 400, works as when switch circuit 400 is in the off state, discharges through the loop that comprises luminescent circuit 200 self, independently reduces the electric current, and then realizes temperature control, reaches the effect that reduces car LED lamp 730 temperature.
Specifically, in another embodiment of the present invention, as shown in fig. 1, 4 and 5, the switch circuit 400 includes a first transistor Q3, a first inductor L1 and a second diode D2, a base of the first transistor Q3 is connected to a first pin of the LED lamp driving chip U1, an emitter of the first transistor Q3 is grounded via a second resistor R2, a collector of the first transistor Q3 is connected to one end of the first inductor L1 and one end of the second diode D2, the other end of the second diode D2 is grounded, and the other end of the first inductor L1 is connected to the light emitting diode.
When the first triode Q3 is in a conducting state, the voltage input by the power input circuit 100 passes through the light emitting diode, the first inductor L1 and the first triode Q3, the second resistor R2 charges the first inductor L1, the current flowing through the first inductor L1 gradually increases with the charging time, and when the voltage drop across the second resistor R2 reaches a preset current detection threshold voltage, the control circuit makes the output end of the LED lamp driving chip U1 become a low level and turns off the first triode Q3.
When the first transistor Q3 is in an off state, the first inductor L1 discharges the stored energy of the inductor through a loop formed by the light emitting diode, the second diode D2 and the first inductor L1 itself. The first triode Q3 returns to the conducting state again after being turned off for a preset fixed time, and the conducting and turning-off processes are repeated, so that temperature control is realized, and the effect of reducing the temperature of the automobile LED lamp 730 is achieved.
Specifically, in another embodiment of the present invention, as shown in fig. 1, 4 and 5, the automotive LED lamp circuit is further provided with a fan connection terminal, the fan connection terminal includes a fan positive connection terminal F + and a fan negative connection terminal F-, the fan positive connection terminal F + is connected to the power input circuit 100, and the fan negative connection terminal F-is connected to one end of the first inductor L1. The fan connecting end is externally connected with a heat dissipation fan 630. By providing the fan connection end, the heat dissipation fan 630 is controlled by the LED lamp driving chip U1, thereby actively dissipating heat from the vehicle lamp.
Specifically, in another embodiment of the present invention, as shown in fig. 1, fig. 4 and fig. 5, the power input circuit 100 includes a power input terminal VCC, a second electrolytic capacitor C2, a fourth resistor R4, a fourth capacitor C4 and a first diode D1, one end of the second electrolytic capacitor C2, one end of the fourth resistor R4 and one end of the first diode D1 are connected to the power input terminal VCC, the other end of the second electrolytic capacitor C2 and the other end of the first diode D1 are grounded, the other end of the fourth resistor R4 is connected to one end of the fourth capacitor C4, and the other end of the fourth capacitor C4 is grounded, thereby performing a filtering function and an anti-interference function. The power input terminal VCC is connected to an external power supply, so that the power input circuit 100 supplies power to the automotive LED lamp circuit.
The utility model further provides a circuit board 720 comprising the automobile LED lamp circuit.
Specifically, in another embodiment of the present invention, as shown in fig. 4 and 5, the size of the first inductor L1 is 10mm × 5mm, and the first inductor L1 can effectively increase the volume, thereby reducing the temperature of the circuit board 720. Further, the thickness of the circuit board 720 is 1.2mm, and further, the circuit board 720 adopts an aluminum substrate single-sided design, so that the heat dissipation effect of the circuit board 720 is better.
Specifically, in another embodiment of the present invention, as shown in fig. 4 and 5, the circuit board 720 includes a plurality of components, the plurality of components are respectively disposed on two sides of the circuit board 720, and the plurality of components are disposed on two sides, so that product assembly is facilitated, and product installation efficiency is improved.
The utility model also provides a vehicle lamp which comprises the circuit board 720.
Specifically, in another embodiment of the present invention, as shown in fig. 2 and 3, the lamp for a vehicle includes a lamp base 500, a heat dissipating module 600, and a light emitting module 700.
The lamp base 500 is connected to the heat sink assembly 600 and the light emitting assembly 700; be equipped with a car light cassette 510 on car light base 500, be equipped with a plurality of hand pieces 511 on the car light cassette 510, through setting up a plurality of hand pieces 511, the staff of being convenient for holds car light cassette 510 is installed extremely in the car light base 500.
The light emitting assembly 700 comprises an LED lamp housing 710, a circuit board 720 and an LED lamp 730, the LED lamp housing 710 is sleeved on the top of the vehicle lamp base 500, a light emitting hole 711 is formed in an end portion of the LED lamp housing 710, the circuit board 720 is fixedly mounted in the LED lamp housing 710, the LED lamp 730 is welded on the circuit board 720 and emits light to the outside through the light emitting hole 711, the LED lamp 730 emits light to the outside through the light emitting hole 711 by arranging the light emitting hole 711 on the LED lamp housing 710, and the LED lamp housing 710 covers the circuit board 720, so that the sealing performance of the circuit board 720 is ensured, and the circuit board 720 is prevented from being worn and aged; the heat dissipation assembly 600 includes a heat dissipation tube 610, a heat dissipation fin 620 and a heat dissipation fan 630, the heat dissipation tube 610 is sleeved with the bottom of the lamp base 500, the heat dissipation fins 620 are uniformly arranged on the side wall of the heat dissipation tube 610, the heat dissipation fan 630 is fixed at the bottom of the heat dissipation tube 610, the bottom of the heat dissipation fin 620 is connected with a heat dissipation cover 640 to form an accommodation cavity 650, and the heat dissipation fan 630 is accommodated in the accommodation cavity 650. Through setting up radiator unit 600 with circuit board 720 electricity is connected, by car LED lamp circuit control heat dissipation fan 630 is right circuit board 720 reaches LED lamp 730 dispels the heat to reduce the temperature of car light, guarantee the stability of the luminous effect of car light.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. An automotive LED lamp circuit, comprising:
the power input circuit is used for supplying power to the automobile LED lamp circuit;
the light-emitting circuit comprises at least one light-emitting diode, and the light-emitting diode is connected with the power input circuit;
the LED lamp driving circuit comprises an LED lamp driving chip and a second resistor, the LED lamp driving chip is connected with the power input circuit and the light emitting circuit, one end of the second resistor is connected with the LED lamp driving chip, and the other end of the second resistor is grounded;
and the switch circuit is connected with the light-emitting circuit and the LED lamp driving circuit and is used for controlling the on and off of the light-emitting circuit.
2. The automotive LED lamp circuit according to claim 1, wherein the switch circuit comprises a first triode, a first inductor, a second diode and a second resistor, a base of the first triode is connected with a first pin of the LED lamp driving chip, an emitter of the first triode is grounded through the second resistor, a collector of the first triode is connected with one end of the first inductor and one end of the second diode, the other end of the second diode is grounded, the other end of the first inductor is connected with the light emitting diode, one end of the second resistor is connected with a sixth pin of the LED lamp driving chip, and the other end of the second resistor is grounded.
3. The automotive LED lamp circuit according to claim 2, wherein the LED lamp circuit is further provided with a fan connection terminal, the fan connection terminal comprises a fan positive connection terminal and a fan negative connection terminal, the fan positive connection terminal is connected with the power input circuit, and the fan negative connection terminal is connected with one end of the first inductor.
4. The automotive LED lamp circuit according to claim 3, wherein the power input circuit comprises a power input terminal, a second electrolytic capacitor, a fourth resistor, a fourth capacitor and a first diode, one end of the second electrolytic capacitor, one end of the fourth resistor and one end of the first diode are connected with the power input terminal, the other end of the second electrolytic capacitor and the other end of the first diode are grounded, the other end of the fourth resistor is connected with one end of the fourth capacitor, the other end of the fourth capacitor is grounded, and the power input terminal is connected with an external power supply.
5. A circuit board comprising the automotive LED lamp circuit of any one of claims 2-4.
6. The circuit board of claim 5, wherein the first inductor has a dimension of 10mm by 5 mm.
7. The circuit board of claim 5, wherein the thickness of the circuit board is 1.2 mm.
8. The circuit board of claim 5, wherein the circuit board comprises a plurality of components, and the plurality of components are respectively arranged on two sides of the circuit board of the LED lamp.
9. A vehicular lamp comprising the circuit board according to any one of claims 5 to 7.
10. The vehicular lamp according to claim 9, further comprising a lamp base, a heat dissipating component, and a light emitting component, the lamp base being connected to the heat dissipating component and the light emitting component;
the car lamp base is provided with a car lamp clamping seat, and the car lamp clamping seat is provided with a plurality of hand blocks;
the LED lamp is fixedly arranged in the LED lamp shell, and the LED lamp is welded on the circuit board and emits light to the outside through the light emitting hole;
the heat dissipation assembly comprises a heat dissipation pipe, heat dissipation fins and a heat dissipation fan, the heat dissipation pipe is sleeved with the bottom of the car lamp base, a plurality of heat dissipation fins are evenly arranged on the side wall of the heat dissipation pipe, the heat dissipation fan is fixed to the bottom of the heat dissipation pipe, the bottoms of the heat dissipation fins are connected with a heat dissipation cover to form a containing cavity, and the heat dissipation fan is contained in the containing cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123298260.6U CN216556957U (en) | 2021-12-23 | 2021-12-23 | Car LED lamp circuit, circuit board and car light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123298260.6U CN216556957U (en) | 2021-12-23 | 2021-12-23 | Car LED lamp circuit, circuit board and car light |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216556957U true CN216556957U (en) | 2022-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123298260.6U Active CN216556957U (en) | 2021-12-23 | 2021-12-23 | Car LED lamp circuit, circuit board and car light |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216556957U (en) |
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2021
- 2021-12-23 CN CN202123298260.6U patent/CN216556957U/en active Active
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