Rear-mounted LED automobile headlamp
By adopting a combination design of thermoelectric separation lamp beads and cooling fans in LED car headlights, the problems of small thermal conductivity and poor welding of old-fashioned lamp beads are solved, and the thermal conductivity efficiency and product life are improved.
Patent Information
- Application Number
- CN202420781746.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-16
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-04-16
AI Technical Summary
The conductive pads and thermal pads of old-fashioned lamp beads are both located at the bottom, resulting in a reduction in the thermal area, and are prone to short circuits due to poor welding and reduced heat dissipation efficiency.
Thermoelectric separation lamp beads are used, and the thermal conduction pads are located on the sides and front. They are soldered to the copper thermal conductor through tin-soluble soldering and conducting with PCB fiberglass boards to increase the thermal contact area and reduce the welding defect rate. At the same time, the heat dissipation fan and copper thermal conduction are used. The body performs active heat dissipation.
It improves thermal conductivity, reduces welding defect rate, avoids short circuit problems, and extends the service life of the product through active heat dissipation.
Smart Images
Figure CN222335165U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicle lamps, in particular to a rear-mounted LED vehicle headlight. Background Art
[0002] LED car lights refer to car lighting devices that use LEDs as light sources. Compared with traditional car lighting devices, LED car lights have many advantages, including higher brightness, lower energy consumption, longer service life and faster response speed.
[0003] However, in the process of implementing the above technical solution, it was found that there are at least the following technical problems: for old-style lamp beads, the conductive pads and thermal pads of the lamp beads 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, old-style lamp beads need to make circuits on copper thermal conductors, 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. If there is a sharp edge on the heat dissipation aluminum part, it will scratch the insulation layer and cause a short circuit. Utility Model Content
[0004] 1. Technical issues to be resolved
[0005] In view of the deficiencies in the prior art, the utility model provides a rear-mounted LED automobile headlight to solve the technical problem that the conductive pad and the thermal pad of the old-style lamp beads 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.
[0006] (II) Technical solution
[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:
[0008] A rear-mounted LED automobile headlight comprises a damping rubber ring, on which a lighting mechanism that is easy to use is provided, the lighting mechanism comprising a first heat dissipation aluminum member, a second heat dissipation aluminum member and a thermoelectric separation lamp bead, the first heat dissipation aluminum member and the second heat dissipation aluminum member are both located on one side of the damping rubber ring, the thermoelectric separation lamp bead is located between the first heat dissipation aluminum member and the second heat dissipation aluminum member, a copper heat conductor is further provided between the first heat dissipation aluminum member and the second heat dissipation aluminum member, the thermoelectric separation lamp bead is fixedly mounted on the upper end of the copper heat conductor, the first heat dissipation aluminum member and the second heat dissipation aluminum member are both fixedly mounted on the side end of the damping rubber ring, the first heat dissipation aluminum member is provided with three plum head machine screws, the first heat dissipation aluminum member and the second heat dissipation aluminum member are fixedly mounted by the three plum head machine screws, the copper heat conductor is fixedly mounted on the inner side walls of the first heat dissipation aluminum member and the second heat dissipation aluminum member, and a PCB fiberglass board is fixedly mounted on the side end of the copper heat conductor.
[0009] Preferably: a cooling fan is fixedly installed between the first cooling aluminum part and the second cooling aluminum part, and wires are used at both ends of the cooling fan. The cooling fan is fixedly connected to the PCB glass fiber board through the wires on one side.
[0010] Preferably, a plug is fixedly connected to a side end portion of the wire on one side.
[0011] (III) Beneficial effects
[0012] 1. This device uses thermoelectric separation lamp beads. There is only a thermal conductive pad at the bottom of the thermoelectric separation lamp beads. The positive and negative conductive pads are designed on the side and front of the thermoelectric separation lamp beads. The bottom pad is welded to the copper thermal conductor by dissolving tin, and the conductive pad is welded to the PCB glass fiber board next to it through the side and front pads. This design can increase the contact area between the thermoelectric separation lamp beads and the copper thermal conductor, increase the thermal conductivity efficiency and reduce the welding defect rate of the thermoelectric separation lamp beads.
[0013] 2. The device does not need to arrange too many circuits on the copper heat conductor, and only needs a copper plate to ensure that the first heat dissipation aluminum parts and the second heat dissipation aluminum parts on both sides can contact the copper heat conductor with the largest area after being clamped, so as to avoid short circuits caused by poor welding, and to avoid the existing lamp beads from not being able to contact the copper heat conductor with the largest area when the first heat dissipation aluminum parts and the second heat dissipation aluminum parts on both sides are clamped, thereby reducing the thermal conductivity efficiency, resulting in the first heat dissipation aluminum parts and the second heat dissipation aluminum parts having burrs that will scratch the insulation layer and cause a short circuit. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] 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.
[0015] Figure 1 This is a structural diagram of the thermoelectric separation lamp bead of the utility model.
[0016] Legend: 1. Damping rubber ring; 2. First heat dissipation aluminum part; 3. Torx head machine screw; 4. Plug; 5. Wire; 6. Cooling fan; 7. PCB glass fiber board; 8. Thermoelectric separation lamp bead; 9. Copper heat conductor; 10. Second heat dissipation aluminum part. DETAILED DESCRIPTION
[0017] The embodiment of the present application provides a rear-mounted LED automobile headlight, which effectively solves the technical problem that the old-style lamp beads have both the conductive pad and the thermal pad at the bottom, which not only reduces the area of the thermal pad but also easily causes short circuit due to poor welding. The device uses a thermoelectric separation lamp bead 8, and the thermoelectric separation lamp bead 8 has only a thermal pad at the bottom. 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 thermal conductor 9 by dissolving tin, and the conductive pad is welded to the adjacent PCB glass fiber board 7 through the side and front pads. This design can increase the contact area between the thermoelectric separation lamp bead 8 and the copper thermal conductor 9, increase the thermal conductivity efficiency and reduce the poor welding rate of the thermoelectric separation lamp bead 8. Example
[0018] The technical solution in the embodiment of the present application is to effectively solve the problem that the conductive pad and the thermal pad of the old-style lamp bead 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. The overall idea is as follows: a rear-mounted LED car headlight, including a damping rubber ring 1, a lighting mechanism that is easy to use is provided on the damping rubber ring 1, and the lighting mechanism includes a first heat dissipation aluminum part 2, a second heat dissipation aluminum part 10 and a thermoelectric separation lamp bead 8, the first heat dissipation aluminum part 2 and the second heat dissipation aluminum part 10 are both located on one side of the damping rubber ring 1, and the thermoelectric separation lamp bead 8 is located on the first heat dissipation aluminum part 2 and the second heat dissipation aluminum part 1 0, a copper heat conductor 9 is also provided between the first heat dissipation aluminum part 2 and the second heat dissipation aluminum part 10, and the thermoelectric separation lamp bead 8 is fixedly installed on the upper end of the copper heat conductor 9. The device uses a thermoelectric separation lamp bead 8, and there is only a thermal conductive pad at the bottom of the thermoelectric separation lamp bead 8. 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 9 by dissolving tin, and the conductive pad is welded to the PCB glass fiber board 7 next to it through the side and front pads. This design can increase the contact area between the thermoelectric separation lamp bead 8 and the copper heat conductor 9, increase the thermal conductivity efficiency and reduce the welding defect rate of the thermoelectric separation lamp bead 8;
[0019] The first heat dissipation aluminum part 2 and the second heat dissipation aluminum part 10 are both fixedly mounted on the side end of the damping rubber ring 1. Three plum head machine screws 3 are provided on the first heat dissipation aluminum part 2. The first heat dissipation aluminum part 2 and the second heat dissipation aluminum part 10 are fixedly mounted by the three plum head machine screws 3. The copper heat conductor 9 is fixedly mounted on the inner side wall of the first heat dissipation aluminum part 2 and the second heat dissipation aluminum part 10. The device uses the second heat dissipation aluminum part 10 and the copper heat conductor 9 clamped inside the first heat dissipation aluminum part 2 to achieve heat dissipation. The thermoelectric separation lamp bead 8 is transmitted to the first heat dissipation aluminum part 2 and the second heat dissipation aluminum part 10 through the copper heat conductor 9 for physical heat dissipation.
[0020] A PCB glass fiber board 7 is fixedly installed at the side end of the copper heat conductor 9, and a cooling fan 6 is also fixedly installed between the first heat dissipation aluminum part 2 and the second heat dissipation aluminum part 10. The two side ends of the cooling fan 6 use wires 5. The cooling fan 6 is fixedly connected to the PCB glass fiber board 7 through the wires 5 on one side. The device has a high-speed cooling fan 6 inside, which has an active cooling function. When the device is working, the cooling fan 6 starts to quickly take away the heat;
[0021] The side end of the wire 5 on one side is fixedly connected with a plug 4. The device uses an integrated plug 4, which is 1:1 size with the original car. It only needs two wires 5 and a PCB glass fiber board 7 to be connected. No external wire 5 is required. It is plug-in and play.
[0022] A thermoelectric separation lamp bead 8 is used, and there is only a thermal conductive pad at the bottom of the thermoelectric separation lamp bead 8. 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 thermal conductor 9 by dissolving tin, and the conductive pad is welded to the adjacent PCB glass fiber board 7 through the side and front pads. This design can increase the contact area between the thermoelectric separation lamp bead 8 and the copper thermal conductor 9, increase the thermal conductivity efficiency and reduce the welding defect rate of the thermoelectric separation lamp bead 8.
[0023] Working principle:
[0024] This device is small in size and close to the original halogen lamp of the car. It will not interfere with other parts of the car. Users can install it by themselves without tools. The input voltage of this device is 9-32V. There is no need to distinguish between positive and negative poles. It is suitable for the output voltage of various specifications of cars to avoid voltage problems that may cause the lamp to burn out or insufficient brightness, and to avoid the problem of reverse connection of positive and negative poles causing the lamp to not light up. This device has a built-in driver with intelligent decoding function to avoid alarms or flashing lights due to decoding requirements of individual cars. At the same time, the driver has the function of automatically reducing power when the temperature is too high, which can avoid the problem of the product burning out the thermoelectric separation lamp bead 8 due to excessive temperature during use. This device has a high-speed heat dissipation inside. The hot cooling fan 6 has its own active cooling function. When the device is working, the cooling fan 6 starts to quickly take away the heat and increase the service life of the product. The device uses the second cooling aluminum part 10 and the first cooling aluminum part 2 to clamp the copper heat conductor 9 to achieve heat dissipation. The thermoelectric separation lamp bead 8 is transferred to the first heat dissipation aluminum part 2 and the second heat dissipation aluminum part 10 through the copper heat conductor 9 for physical heat dissipation. The device uses the thermoelectric separation lamp bead 8. The bottom of the thermoelectric separation lamp bead 8 has only a thermal conductive pad. 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 9 by tin dissolution. The conductive pad Through the side and front soldering pads and the adjacent PCB glass fiber board 7 welding conduction, this design can increase the contact area between the thermoelectric separation lamp bead 8 and the copper heat conductor 9, increase the thermal conductivity efficiency and reduce the welding defect rate of the thermoelectric separation lamp bead 8. In addition, the copper heat conductor 9 does not need to have too many circuit arrangements, and only one copper plate is needed to ensure that the first heat dissipation aluminum parts 2 and the second heat dissipation aluminum parts 10 on both sides can contact the copper heat conductor 9 with the largest area after clamping. Different from the old-style lamp beads, the lamp bead conductive pads and thermal pads are both made at the bottom, which not only reduces the thermal pad area, but also easily causes short circuits due to poor welding, and the old-style lamp beads need to be on the copper heat conductor. 9, the circuit needs to be covered with ink for insulation, the ink layer will be higher than the copper heat conductor 9. In this way, when the first heat dissipation aluminum parts 2 and the second heat dissipation aluminum parts 10 on both sides are clamped, the maximum area cannot be in contact with the copper heat conductor 9, thereby reducing the thermal conductivity efficiency, and if there are burrs on the first heat dissipation aluminum parts 2 and the second heat dissipation aluminum parts 10, the insulation layer will be scratched to cause a short circuit. The present device can avoid the above problems to the greatest extent and achieve a true thermoelectric separation structure. The present device uses an integrated plug 4, which is 1:1 size with the original car. It only needs two wires 5 and the PCB glass fiber board 7 to be connected. No external wires 5 are required. It is plug-in and play.
[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 LED automobile headlight, comprising a damping rubber ring (1), characterized in that: The damping rubber ring (1) is provided with a lighting mechanism that is convenient for use; The lighting mechanism comprises a first heat dissipation aluminum member (2), a second heat dissipation aluminum member (10) and a thermoelectric separation lamp bead (8); the first heat dissipation aluminum member (2) and the second heat dissipation aluminum member (10) are both located on one side of the damping rubber ring (1); the thermoelectric separation lamp bead (8) is located between the first heat dissipation aluminum member (2) and the second heat dissipation aluminum member (10); a copper heat conductor (9) is also provided between the first heat dissipation aluminum member (2) and the second heat dissipation aluminum member (10); and the thermoelectric separation lamp bead (8) is fixedly mounted on the upper end of the copper heat conductor (9).
2. A rear-mounted LED automobile headlight according to claim 1, characterized in that: The first heat dissipation aluminum part (2) and the second heat dissipation aluminum part (10) are both fixedly mounted on the side ends of the damping rubber ring (1).
3. A rear-mounted LED automobile headlight as claimed in claim 2, characterized in that: The first heat dissipation aluminum member (2) is provided with three plum head machine screws (3); The first heat dissipation aluminum component (2) and the second heat dissipation aluminum component (10) are fixedly mounted by three plum head machine screws (3).
4. A rear-mounted LED automobile headlight as claimed in claim 3, characterized in that: The copper heat conductor (9) is fixedly mounted on the inner side walls of the first heat dissipation aluminum component (2) and the second heat dissipation aluminum component (10); Wherein, a PCB glass fiber board (7) is fixedly mounted on the side end of the copper heat conductor (9).
5. A rear-mounted LED automobile headlight as claimed in claim 4, characterized in that: A heat dissipation fan (6) is also fixedly installed between the first heat dissipation aluminum part (2) and the second heat dissipation aluminum part (10); Wherein, both side ends of the heat dissipation fan (6) use wires (5), and the heat dissipation fan (6) is fixedly connected to the PCB glass fiber board (7) via the wires (5) on one side.
6. A rear-mounted LED automobile headlight as claimed in claim 5, characterized in that: A plug (4) is fixedly connected to a side end of the wire (5) on one side.