Automobile headlamp driver heat dissipation shell with multi-layer structural design

Abstract

The utility model discloses an automobile headlamp driver heat dissipation shell with a multi-layer structural design, which comprises a lower shell, an upper shell is connected above the lower shell, the upper shell comprises an outer shell part, a connecting terminal is connected onto the outer shell part, the outer shell part comprises a connecting part, a heat dissipation part is connected inside the connecting part, and the heat dissipation part is connected with the connecting terminal. The inner part of the shell part is connected with an aluminum sheet corresponding to the heat dissipation part, the connecting part is made of a PBT (Polybutylece Terephthalate)-GF15 material, and the heat dissipation part is made of a graphite nylon material. The connecting part of the upper shell is made of the PBT-GF15 material, the heat dissipation part is made of the graphite nylon material, heat dissipated by the PCBA main board is transmitted to the heat dissipation part for heat dissipation through the aluminum sheet, compared with the mode that a single die-casting aluminum alloy material is adopted, the good heat dissipation effect can be guaranteed, the gram weight and the cost of the PCBA main board can be reduced, and compared with the mode that the single PBT-GF15 material is adopted, the heat dissipation effect of the PCBA main board is greatly improved. And through the arrangement of the aluminum sheet, the upper shell has the function of shielding electronic signals.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat dissipation of automobile lamps, and particularly relates to a heat dissipation shell of an automobile headlight driver with a multi-layer structure. Background Art

[0002] Currently, automotive lighting is becoming increasingly complex, with headlight drivers often integrating multiple intelligent control functions. Because these drivers often experience significant heat generation during operation, the housing housing housing the driver is often designed with a certain degree of heat dissipation during production.

[0003] However, although the driver housing has a certain heat dissipation capacity, its heat dissipation capacity is relatively limited because the current existing technology generally adopts a passive heat dissipation method. Therefore, during the design, whether its structure is reasonable determines the quality of the heat dissipation capacity.

[0004] The disadvantages of existing automotive headlight driver housings are that they are typically manufactured from a single material, PBT-GF15 (15% glass fiber reinforced polybutylene terephthalate), which has insufficient heat dissipation performance, cannot shield electronic signals, and is non-conductive. Alternatively, if the housing is manufactured from a single material, ADC12 (die-cast aluminum alloy), the heat dissipation performance may be adequate, but the price is high and the weight requirement is limited. Utility Model Content

[0005] The purpose of the present invention is to provide a heat dissipation housing for a car headlight driver with a multi-layer structure to solve the problems mentioned above. The heat dissipation housing for a car headlight driver provided by the present invention has the characteristics of good heat dissipation effect.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a multi-layer structural design of a heat dissipation housing for a car headlight driver, comprising a lower housing, the lower housing being made of aluminum alloy, a PCBA mainboard being installed inside the lower housing, an upper housing being connected above the lower housing, the upper housing comprising an outer shell portion, a connecting terminal being connected to the outer shell portion, the outer shell portion comprising a connecting portion, a heat dissipation portion being connected inside the connecting portion, an aluminum sheet corresponding to the heat dissipation portion being connected inside the outer shell portion, wherein the connecting portion is made of PBT-GF15 material, the heat dissipation portion is made of graphite nylon material, and the connecting portion, the heat dissipation portion and the aluminum sheet are integrally formed by injection molding.

[0007] In order to ensure the heat dissipation effect of the lower shell, heat dissipation fins are further connected to the bottom surface of the lower shell.

[0008] To ensure the stability of the connection between the upper and lower shells, a sealing groove is further provided on the edge of the lower shell. A pressing edge is provided on the connecting portion to correspond to the sealing groove. Several clamping blocks are provided on the outer side of the edge of the lower shell. The connecting portion is provided with a buckle corresponding to the clamping blocks.

[0009] In order to press on the PCBA mainboard, limit the PCBA mainboard and ensure the stability of the PCBA mainboard installation, a number of limiting ribs are further provided on the inner side of the connecting part.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] 1. The shell of the present invention includes a connecting portion, the interior of the connecting portion is connected to a heat dissipation portion, and the interior of the shell is connected to an aluminum sheet corresponding to the heat dissipation portion. The connecting portion is made of PBT-GF15 material, and the heat dissipation portion is made of graphite nylon. The heat dissipated by the PCBA motherboard is transferred to the heat dissipation portion through the aluminum sheet for heat dissipation. Compared with the use of a single die-cast aluminum alloy material, it can not only ensure good heat dissipation effect, but also reduce its own weight and cost. Compared with the use of a single PBT-GF15 material, the setting of the aluminum sheet enables the upper shell to have the function of shielding electronic signals;

[0012] 2. The connection part of the utility model is made of PBT-GF15 material, which has good elasticity, so that the upper shell and the lower shell can be connected by buckles and blocks;

[0013] 3. The upper shell and the lower shell of the utility model are connected by the glue in the sealing groove and the pressing edge on the one hand, and by the buckle and the block on the other hand, so as to ensure the stability of the connection between the upper shell and the lower shell;

[0014] 4. The inner side of the connecting part of the utility model is provided with a plurality of limiting ribs, which are pressed on the PCBA mainboard to limit the PCBA mainboard and ensure the stability of the PCBA mainboard installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the explosion structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the explosion structure of the upper shell of the utility model;

[0017] Figure 3 This is a schematic cross-sectional view of the upper shell of the utility model;

[0018] Figure 4 This is a schematic structural diagram of the outer shell of the utility model;

[0019] Figure 5 This is a schematic structural diagram of the lower shell of the utility model;

[0020] In the figure: 1. PCBA mainboard; 2. Upper shell; 3. Lower shell; 31. Sealing groove; 32. Block; 33. Heat dissipation fins; 4. Connection terminals; 5. Outer shell; 51. Connection part; 52. Heat dissipation part; 53. Limiting rib; 54. Pressing edge; 55. Buckle; 6. Aluminum sheet. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example 1

[0023] See also Figure 1-5 The utility model provides the following technical solutions: a multi-layer structural design of a heat dissipation housing for a car headlight driver, comprising a lower housing 3, the lower housing 3 being made of aluminum alloy, a PCBA mainboard 1 being installed inside the lower housing 3, an upper housing 2 being connected above the lower housing 3, the upper housing 2 comprising an outer shell 5, the outer shell 5 being connected to a connecting terminal 4, the outer shell 5 comprising a connecting portion 51, a heat dissipation portion 52 being connected inside the connecting portion 51, an aluminum sheet 6 corresponding to the heat dissipation portion 52 being connected inside the outer shell 5, wherein the connecting portion 51 is made of PBT-GF15 material, the heat dissipation portion 52 is made of graphite nylon material, and the connecting portion 51, the heat dissipation portion 52 and the aluminum sheet 6 are integrally formed by injection molding.

[0024] By adopting the above technical solution, the shell part 5 of the present invention includes a connecting part 51, the interior of the connecting part 51 is connected to the heat dissipation part 52, the interior of the shell part 5 is connected to the aluminum sheet 6 corresponding to the heat dissipation part 52, and the connecting part 51 is made of PBT-GF15 material, and the heat dissipation part 52 is made of graphite nylon material. The heat dissipated by the PCBA mainboard 1 is transferred to the heat dissipation part 52 through the aluminum sheet 6 for heat dissipation. Compared with the use of a single die-cast aluminum alloy material, it can not only ensure good heat dissipation effect, but also reduce its own weight and cost. Compared with the use of a single PBT-GF15 material, the setting of the aluminum sheet enables the upper shell to have the function of shielding electronic signals; the connecting part 51 of the present invention is made of PBT-GF15 material and has good elasticity, so that the upper shell 2 and the lower shell 3 can be connected by the buckle 55 and the card block 32.

[0025] Specifically, heat dissipation fins 33 are connected to the bottom surface of the lower housing 3 .

[0026] By adopting the above technical solution, the heat dissipation effect of the lower shell 3 is guaranteed.

[0027] Example 2

[0028] This embodiment differs from Embodiment 1 in that, specifically, a sealing groove 31 is provided on the edge of the lower housing 3, which is filled with glue. A pressing edge 54 is provided on the connecting portion 51, corresponding to the sealing groove 31. Several latches 32 are provided on the outer edge of the lower housing 3. A buckle 55 corresponding to the latches 32 is provided on the connecting portion 51.

[0029] By adopting the above technical solution, the upper shell 2 and the lower shell 3 of the utility model are connected on the one hand by bonding the glue in the sealing groove 31 with the pressing edge 54, and on the other hand by cooperating with the buckle 55 and the block 32, thereby ensuring the stability of the connection between the upper shell 2 and the lower shell 3.

[0030] Example 3

[0031] The difference between this embodiment and the first embodiment is that, specifically, a plurality of limiting ribs 53 are provided on the inner side of the connecting portion 51 .

[0032] By adopting the above technical solution, the limiting ribs 53 are pressed on the PCBA mainboard 1 to limit the PCBA mainboard 1 and ensure the stability of the installation of the PCBA mainboard 1.

[0033] In summary, the shell portion 5 of the present invention includes a connecting portion 51, the interior of the connecting portion 51 is connected to a heat dissipation portion 52, the interior of the shell portion 5 is connected to an aluminum sheet 6 corresponding to the heat dissipation portion 52, and the connecting portion 51 is made of PBT-GF15 material, and the heat dissipation portion 52 is made of graphite nylon material. The heat dissipated by the PCBA motherboard 1 is transferred to the heat dissipation portion 52 through the aluminum sheet 6 for heat dissipation. Compared with the use of a single die-cast aluminum alloy material, it can not only ensure a good heat dissipation effect, but also reduce its own weight and cost. Compared with the use of a single PBT-GF15 material, the setting of the aluminum sheet enables the upper shell to have the function of shielding electronic signals; the present invention The connecting portion 51 is made of PBT-GF15 material with good elasticity, so that the upper shell 2 and the lower shell 3 can be connected by the buckle 55 and the block 32. The upper shell 2 and the lower shell 3 of the utility model are connected by the glue in the sealing groove 31 and the pressing edge 54 on the one hand, and by the buckle 55 and the block 32 on the other hand, thereby ensuring the stability of the connection between the upper shell 2 and the lower shell 3. The inner side of the connecting portion 51 of the utility model is provided with a plurality of limiting ribs 53. The limiting ribs 53 are pressed on the PCBA mainboard 1 to limit the PCBA mainboard 1 and ensure the stability of the installation of the PCBA mainboard 1.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-layered heat dissipation housing for a headlight driver, characterized by: It includes a lower shell, a PCBA mainboard is installed inside the lower shell, an upper shell is connected to the top of the lower shell, the upper shell includes an outer shell, the outer shell is connected to a connecting terminal, the outer shell includes a connecting part, the inner part of the connecting part is connected to a heat dissipation part, and the inner part of the outer shell is connected to an aluminum sheet corresponding to the heat dissipation part, wherein the connecting part is made of PBT-GF15 material, the heat dissipation part is made of graphite nylon, and the connecting part, the heat dissipation part and the aluminum sheet are integrally formed by injection molding.

2. The multi-layered heat dissipation housing for a headlight driver according to claim 1, characterized in that: The lower shell is made of aluminum alloy.

3. The multi-layered heat dissipation housing for a headlight driver according to claim 1, characterized in that: The bottom surface of the lower shell is connected with heat dissipation fins.

4. The multi-layered heat dissipation housing for a headlight driver according to claim 1, characterized in that: A sealing groove is provided on the edge of the lower shell.

5. The heat dissipation housing of a multi-layered automobile headlight driver according to claim 4, characterized in that: The connecting portion is provided with a pressing edge corresponding to the sealing groove.

6. The multi-layered heat dissipation housing for a headlight driver according to claim 1, characterized in that: A plurality of blocks are provided on the outer side of the edge of the lower shell.

7. The multi-layered heat dissipation housing for a headlight driver according to claim 6, characterized in that: The connecting portion is provided with a buckle corresponding to the clamping block.

8. The multi-layered heat dissipation housing for an automobile headlight driver according to claim 1, characterized in that: A plurality of limiting ribs are provided on the inner side of the connecting portion.

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