Rear-mounted vehicle-mounted LED headlamp

Abstract

The utility model relates to the technical field of vehicle lamps, and particularly discloses a rear-mounted vehicle-mounted LED headlamp which comprises a PCB glass fiber board, a copper heat conductor is arranged on the PCB glass fiber board, a thermoelectric separation lamp bead is arranged on the PCB glass fiber board, a second heat dissipation aluminum piece is arranged below the PCB glass fiber board, a first heat dissipation aluminum piece is arranged above the PCB glass fiber board, and a second heat dissipation aluminum piece is arranged above the PCB glass fiber board. A wabbler machine thread screw is arranged above the heat dissipation aluminum piece I; wherein the first heat dissipation aluminum piece and the second heat dissipation aluminum piece are fixedly connected through a wabbler machine thread screw. According to the back-mounted vehicle-mounted LED headlamp, the back-mounted vehicle-mounted LED headlamp is designed to be of a thermoelectric separation structure, the contact area of the thermoelectric separation lamp beads and the copper heat conductor is increased, the heat conduction efficiency is improved, meanwhile, the welding reject ratio of the thermoelectric separation lamp beads is reduced, in addition, the copper heat conductor does not need any circuit arrangement, only one copper plate is needed, and the cost is reduced. The first heat dissipation aluminum piece and the second heat dissipation aluminum piece can be in contact with the copper heat conductor in the maximum area after being clamped.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle lamps, in particular to a rear-mounted vehicle-mounted LED headlight. Background Art

[0002] LED headlights refer to headlights that use LED as a light source. With the progress of society and the development of science, LED headlights are increasingly used and are suitable for replacing original halogen lamps. The purpose is to increase the brightness of the headlights and change the color temperature of the headlights. They have the characteristics of energy saving, long life, high brightness, wide illumination range, etc., and are easy and convenient to install.

[0003] At present, the existing LED headlights (such as patent number: CN209782491U) disclose an automotive LED headlight, including a first radiator, a second radiator connected opposite to the first radiator, a light source substrate arranged between the first radiator and the second radiator, LED lamp beads arranged on the light source substrate, a driving board electrically connected to the light source substrate, a pin socket electrically connected to the driving board, a connector for fixing the first radiator and the second radiator, and a cooling fan for heat dissipation, the second radiator is provided with a fixing column that is plugged into and matched with the first radiator, and the light source substrate is provided with a fixing column through hole for the fixing column to pass through.

[0004] However, in the process of implementing the above technical solution, it was found that there are at least the following technical problems: the conductive pads and thermal pads of the existing LED headlights are both made at the bottom, which not only reduces the area of ​​the thermal pads, but also easily causes short circuits due to poor welding. In addition, the existing LED headlights need to make circuits on the copper thermal conductor, and the circuits need to be covered with ink for insulation. The ink layer will be higher than the copper thermal conductor. In this way, when the heat dissipation aluminum parts on both sides are clamped, the maximum area cannot be in contact with the copper thermal conductor, thereby reducing the thermal conductivity efficiency. And if there is a burr on the heat dissipation aluminum part, it will scratch the insulation layer and cause a short circuit. Therefore, in order to solve the above problems, we propose a post-installed vehicle-mounted LED headlight. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the shortcomings of the prior art, the utility model provides a post-installed vehicle-mounted LED headlight, which solves the problem that the conductive pad and the thermal pad of the existing LED headlight are both made at the bottom, which not only reduces the area of ​​the thermal pad, but also easily causes a short circuit due to poor welding. In addition, the existing LED headlight needs to make a circuit on the copper thermal conductor, and the circuit needs to be covered with ink for insulation. The ink layer will be higher than the copper thermal conductor. In this way, when the heat dissipation aluminum parts on both sides are clamped, the maximum area cannot be in contact with the copper thermal conductor, thereby reducing the thermal conductivity efficiency. And if there is a flash on the heat dissipation aluminum part, it will scratch the insulation layer and cause a short circuit.

[0007] (II) Technical solution

[0008] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] A rear-mounted vehicle LED headlight comprises a PCB glass fiber board, a copper heat conductor is arranged on the PCB glass fiber board, a thermoelectric separation lamp bead is arranged on the PCB glass fiber board, a heat dissipation aluminum component 2 is arranged below the PCB glass fiber board, a heat dissipation aluminum component 1 is arranged above the PCB glass fiber board, and a plum head machine screw is arranged above the heat dissipation aluminum component 1; the heat dissipation aluminum component 1 and the heat dissipation aluminum component 2 are fixedly connected by plum head machine screws; a plug is arranged on one side of the PCB glass fiber board, a wire is arranged between the plug and the PCB glass fiber board, and a heat dissipation fan is arranged on one side of the PCB glass fiber board; the heat dissipation fan is located on a side away from the plug.

[0010] Preferably: the heat dissipation aluminum part one and the heat dissipation aluminum part two clamp the copper heat conductor; the thermoelectric separation lamp bead is provided with a thermal conductive pad and a conductive pad, the thermal conductive pad is arranged at the bottom of the thermoelectric separation lamp bead, and the positive and negative poles of the conductive pad are arranged on the side and front of the thermoelectric separation lamp bead; the thermal conductive pad is welded to the copper heat conductor by dissolving tin.

[0011] Preferably: the conductive pad is connected to the adjacent PCB glass fiber board by welding through the side and front pads; the plug is an integrated plug, and the plug is directly connected to the PCB glass fiber board by electronic wire.

[0012] (III) Beneficial effects

[0013] 1. By designing the aftermarket LED headlights as a thermoelectric separation structure, the contact area between the thermoelectric separation lamp beads and the copper thermal conductor is increased, which increases the thermal conductivity efficiency while reducing the welding failure rate of the thermoelectric separation lamp beads. In addition, the copper thermal conductor does not require any circuit arrangement, and only a copper plate is needed to ensure that the heat dissipation aluminum parts 1 and 2 can contact the copper thermal conductor with the maximum area after clamping.

[0014] 2. The cooling fan starts to quickly take away the heat and increase the service life of the product. By designing the plug of the after-installed vehicle LED headlight to be plug-in and play, the installation is simple and convenient. The cooling fan can quickly take away the heat when the after-installed vehicle LED headlight is working, which improves the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.

[0016] Figure 1 This is a structural diagram of an exploded three-dimensional rear-mounted vehicle-mounted LED headlight of the utility model.

[0017] Legend: 1. Cooling fan; 2. Cooling aluminum part 1; 3. Torx head machine screw; 4. Plug; 5. Wire; 6. PCB fiberglass board; 7. Copper heat conductor; 8. Thermoelectric separation lamp bead; 9. Cooling aluminum part 2. DETAILED DESCRIPTION

[0018] The embodiment of the present application provides a post-installed vehicle-mounted LED headlight, which effectively solves the problem that the conductive pad and the thermal pad of the existing LED headlight are both made at the bottom, which not only reduces the area of ​​the thermal pad, but also easily causes a short circuit due to poor welding. In addition, the existing LED headlight needs to make a circuit on the copper thermal conductor, and the circuit needs to be covered with ink for insulation. The ink layer will be higher than the copper thermal conductor. In this way, when the heat dissipation aluminum parts on both sides are clamped, the maximum area cannot be in contact with the copper thermal conductor, thereby reducing the thermal conductivity efficiency. And if there is a flash on the heat dissipation aluminum part, it will scratch the insulation layer and cause a short circuit. Example

[0019] like Figure 1 As shown, the technical solution in the embodiment of the present application effectively solves the problem that the conductive pad and the thermal pad of the existing LED headlights are both made at the bottom, which not only reduces the area of ​​the thermal pad, but also easily causes a short circuit due to poor welding. In addition, the existing LED headlights need to make circuits on the copper thermal conductor, and the circuit needs to be covered with ink for insulation. The ink layer will be higher than the copper thermal conductor. In this way, when the heat dissipation aluminum parts on both sides are clamped, the maximum area cannot be in contact with the copper thermal conductor, thereby reducing the thermal conductivity efficiency. And if there is a flash on the heat dissipation aluminum part, it will scratch the insulation layer and cause a short circuit. The overall idea is as follows:

[0020] In view of the problems existing in the prior art, the utility model provides a rear-mounted vehicle LED headlight, including a PCB glass fiber board 6, a copper heat conductor 7 is arranged on the PCB glass fiber board 6, a thermoelectric separation lamp bead 8 is arranged on the PCB glass fiber board 6, a heat dissipation aluminum part 2 9 is arranged below the PCB glass fiber board 6, a heat dissipation aluminum part 1 2 is arranged above the PCB glass fiber board 6, and a plum head machine screw 3 is arranged above the heat dissipation aluminum part 1 2; wherein, the heat dissipation aluminum part 1 2 and the heat dissipation aluminum part 2 9 are fixedly connected by the plum head machine screw 3; a plug 4 is arranged on one side of the PCB glass fiber board 6, and an electronic wire is used to directly connect the pins in the plug 4 to the PCB glass fiber board 6, without the need for an external power supply wire, and the plug-in type is plug-and-play, a wire 5 is arranged between the plug 4 and the PCB glass fiber board 6, and a cooling fan 1 is arranged on one side of the PCB glass fiber board 6; wherein, the cooling fan 1 is located on a side away from the plug 4, and has its own active heat dissipation function. When the rear-mounted vehicle LED headlight is working, the cooling fan 1 is started to quickly take away the heat, thereby increasing the service life of the product.

[0021] The heat dissipation aluminum component 1 2 and the heat dissipation aluminum component 2 9 clamp the copper heat conductor 7; the heat dissipation of the aluminum component is achieved by clamping the copper heat conductor 7 inside the heat dissipation aluminum component 1 2 and the heat dissipation aluminum component 2 9, and the thermoelectric separation lamp bead 8 is transferred to the aluminum component through the copper heat conductor 7, and the heat is physically dissipated by the aluminum component. A thermal conductive pad and a conductive pad are provided on the thermoelectric separation lamp bead 8, and the thermal conductive pad is provided at the bottom of the thermoelectric separation lamp bead 8, and the positive and negative electrodes of the conductive pad are provided on the side and front of the thermoelectric separation lamp bead 8; the thermal conductive pad is welded to the copper heat conductor 7 by dissolving tin; the conductive pad is welded to the adjacent PCB glass fiber board 6 through the side and front pads, thereby increasing the contact area between the thermoelectric separation lamp bead 8 and the copper heat conductor 7, increasing the thermal conductivity efficiency and reducing the welding defect rate of the thermoelectric separation lamp bead 8.

[0022] Working principle:

[0023] The first step, when the after-installed vehicle-mounted LED headlight is used, the heat dissipation of the aluminum part is realized by clamping the copper heat conductor 7 in the heat dissipation aluminum part 1 and the heat dissipation aluminum part 2 9, and the thermoelectric separation lamp bead 8 is transmitted to the aluminum part through the copper heat conductor 7, and the heat dissipation is physically dissipated by the aluminum part. There is only a thermal conductive pad at the bottom of the thermoelectric separation lamp bead 8, and the positive and negative conductive pads are designed on the side and front of the thermoelectric separation lamp bead 8. The bottom pad is welded to the copper heat conductor 7 by dissolving tin, and the conductive pad is welded to the side and front pads and the PCB glass fiber board 6 next to it, and then the heat dissipation aluminum part 2 and the heat dissipation aluminum part 2 are used. The heat dissipation aluminum part 2 9 is clamped on the PCB glass fiber board 6, and then the heat dissipation aluminum part 1 2 and the heat dissipation aluminum part 2 9 are fixed with the plum head machine screws 3. By designing the rear-mounted vehicle LED headlight as a thermoelectric separation structure, the contact area between the thermoelectric separation lamp bead 8 and the copper thermal conductor 7 is increased, and the thermal conductivity efficiency is increased while reducing the welding defect rate of the thermoelectric separation lamp bead 8. In addition, the copper thermal conductor 7 does not need any circuit arrangement, and only a copper plate is needed to ensure that the heat dissipation aluminum part 1 2 and the heat dissipation aluminum part 2 9 can be in contact with the copper thermal conductor 7 with the maximum area after clamping.

[0024] In the second step, when the after-installed vehicle LED headlight is used, the electronic wire is used to directly connect the pins in the plug 4 to the PCB glass fiber board 6. No external power wire is required. It is plug-in and play. There is a cooling fan 1 on the top, which has its own active heat dissipation function. When the after-installed vehicle LED headlight is working, the cooling fan 1 starts to quickly take away the heat and increase the service life of the product. By designing the plug 4 of the after-installed vehicle LED headlight to be plug-in and play, the installation is simple and convenient, and the cooling fan 1 can quickly take away the heat when the after-installed vehicle LED headlight is working, thereby improving the practicality of the device.

[0025] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A rear-mounted vehicle LED headlight, comprising a PCB glass fiber board (6), characterized in that: A copper heat conductor (7) is arranged on the PCB glass fiber board (6), a thermoelectric separation lamp bead (8) is arranged on the PCB glass fiber board (6), a heat dissipation aluminum part 2 (9) is arranged below the PCB glass fiber board (6), a heat dissipation aluminum part 1 (2) is arranged above the PCB glass fiber board (6), and a plum head machine screw (3) is arranged above the heat dissipation aluminum part 1 (2); Wherein, the heat dissipation aluminum component 1 (2) and the heat dissipation aluminum component 2 (9) are fixedly connected by a plum head machine screw (3); A plug (4) is provided on one side of the PCB glass fiber board (6), a wire (5) is provided between the plug (4) and the PCB glass fiber board (6), and a cooling fan (1) is provided on one side of the PCB glass fiber board (6); The cooling fan (1) is located on a side away from the plug (4).

2. The aftermarket vehicle-mounted LED headlight according to claim 1, characterized in that: The heat dissipation aluminum component 1 (2) and the heat dissipation aluminum component 2 (9) clamp the copper heat conductor (7).

3. The aftermarket vehicle-mounted LED headlight according to claim 2, characterized in that: The thermoelectric separation lamp bead (8) is provided with a heat conductive pad and a conductive pad, the heat conductive pad is provided at the bottom of the thermoelectric separation lamp bead (8), and the positive and negative electrodes of the conductive pad are provided at the side and front of the thermoelectric separation lamp bead (8).

4. The aftermarket vehicle-mounted LED headlight according to claim 3, characterized in that: The thermally conductive pad is welded to the copper thermal conductor (7) by means of tin dissolution.

5. The aftermarket vehicle-mounted LED headlight according to claim 4, characterized in that: The conductive pad is connected to the adjacent PCB glass fiber board (6) by welding through the side and front pads.

6. The aftermarket vehicle-mounted LED headlight according to claim 5, characterized in that: The plug (4) is an integrated plug, and the plug (4) is directly connected to the PCB glass fiber board (6) using an electronic wire.

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