An automobile corner lamp radiator

Abstract

The utility model discloses an automobile corner light radiator, including the heat dissipation board, the heat dissipation board is equipped with the assembling board no.

Description

Technical Field

[0001] This utility model relates to the field of automotive lighting accessories technology, and more specifically to an automotive corner light radiator. Background Technology

[0002] As a key component of vehicle auxiliary lighting systems, automotive corner lights have specific requirements for their heat dissipation structures due to their functional positioning and installation scenarios. Because of the complex internal structure of the mounting area of ​​automotive corner lights, the matching LED substrate heat sink needs to be designed to be compatible with nearby components, resulting in traditional heat sinks generally suffering from complex structures and insufficient compatibility.

[0003] The prior art discloses a car corner light radiator with publication number CN217109404U, which improves the heat dissipation effect of the thermally conductive plastic radiator by embedding thermally conductive metal plates on the surface of the radiator's main substrate, thus compensating for its disadvantage of low thermal conductivity compared to aluminum, and is suitable for heat dissipation of high-power car corner lights; however, this utility model still has problems such as the need to optimize structural adaptability and further improve heat dissipation efficiency. Therefore, this utility model proposes a car corner light radiator. Summary of the Invention

[0004] The purpose of this utility model is to provide a car corner light radiator with a reasonable structure, strong adaptability and good heat dissipation effect.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A car corner light radiator includes a heat sink plate. The heat sink plate is fixed with an assembly plate one and an assembly plate two with an L-shaped cross-section. The heat sink plate includes a side plate one and a side plate two. The side plate one has a groove for assembling a corner light circuit board. A circuit board positioning post is provided in the groove. A bottom groove is provided on one side of the groove. A T-shaped hole one is provided in the center of the bottom groove. A plurality of inclined heat dissipation fins are fixed on the side plate two. A plurality of heat dissipation holes are provided at equal intervals on the edges of the heat dissipation fins. The heat sink plate has T-shaped holes two on both sides of the heat dissipation fins.

[0006] Furthermore, the heat dissipation fins and the heat dissipation plate are integrally injection molded, and the included angle between the heat dissipation fins is 20°-40°.

[0007] Furthermore, the heat dissipation hole is a circular through hole, and the axis of the heat dissipation hole is perpendicular to the length direction of the heat dissipation fins.

[0008] Furthermore, both assembly plate one and assembly plate two are provided with circular mounting holes.

[0009] Furthermore, the outer surfaces of the heat sink, assembly plate one, and assembly plate two are all provided with a thermally conductive coating, and the material of the thermally conductive coating is graphene composite coating.

[0010] Beneficial effects: This utility model significantly expands the heat dissipation area by setting the inclined heat dissipation fins on the second side. The 20°-40° angle design optimizes the airflow path and reduces the generation of eddies. The circular heat dissipation holes equidistantly opened on the edge of the heat dissipation fins accelerate air penetration and convection heat exchange, forming a conduction and convection synergistic heat dissipation mechanism, effectively improving heat dissipation efficiency and effectively coping with the high heat output of high-power corner lamps. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of a structural part of the side of this utility model; Figure 3 This is a schematic diagram of two structural features on the side of this utility model.

[0013] Reference numerals: 1. Heat sink; 101. Side panel 1; 102. Side panel 2; 2. T-hole 2; 3. Assembly panel 1; 4. Heat dissipation hole; 5. Assembly panel 2; 6. T-hole 1; 7. Bottom groove; 8. Positioning post; 9. Groove; 10. Heat dissipation fins. Detailed Implementation

[0014] like Figure 1 As shown in this specific embodiment, an automotive corner light radiator includes a heat sink 1. The heat sink 1 is fixed with a mounting plate 3 and a mounting plate 5 with an L-shaped cross-section. Both the mounting plate 3 and the mounting plate 5 have circular mounting holes. The mounting plate 3 and the mounting plate 5 with the L-shaped cross-section can be fixed in position according to the spatial contour of the installation location, avoiding surrounding components, adapting to complex spaces such as the side pillars of the vehicle body and the inner side of the rear bumper, and improving assembly stability.

[0015] The outer surfaces of heat sink 1, assembly plate 3, and assembly plate 5 are all covered with a thermally conductive coating. The thermally conductive coating is made of graphene composite coating. Although the thermal conductivity of thermally conductive plastic heat sinks in the prior art is improved by embedding metal sheets, the coverage of the metal sheets is limited, and the overall thermal conductivity is still limited by the plastic material. The graphene composite coating can cover all the outer surfaces of the heat sink, forming an all-round high-efficiency thermal conduction channel, which greatly improves the overall thermal conductivity. It is especially suitable for heat dissipation of high-power corner lamps. The graphene composite coating has an extremely high thermal conductivity and can form a high-efficiency thermally conductive layer on the surface of heat sink 1 and assembly plate, accelerating the transfer of heat from the inside to the surface and making up for the disadvantage of low thermal conductivity of plastic material.

[0016] like Figures 1 to 3As shown, the heat sink 1 includes a first side 101 and a second side 102. The first side 101 has a groove 9 for assembling the corner lamp circuit board. The groove 9 has a circuit board positioning post 8. The groove 9 provides assembly space for the circuit board. The positioning post 8 achieves precise positioning, ensuring that the circuit board is in close contact with the heat sink 1, reducing thermal resistance and improving heat conduction efficiency.

[0017] Several inclined heat dissipation fins 10 are fixedly provided on the side 2 102 of the heat dissipation plate 1. The inclined heat dissipation fins 10 on the side 2 102 significantly increase the heat dissipation area. The heat dissipation holes 4 on the edge of the fins promote air convection, forming a dual heat dissipation of conduction and convection, which can quickly dissipate the heat generated by the high-power corner lamp and avoid excessive junction temperature of the LED chip. The heat dissipation fins 10 and the heat dissipation plate 1 are integrally injection molded, which can eliminate the connection gap between the heat dissipation fins 10 and the heat dissipation plate 1, avoid the thermal resistance caused by the assembly gap, ensure that the heat is quickly conducted from the heat dissipation plate 1 to the heat dissipation fins 10, and at the same time improve the overall structure's vibration resistance and adapt to automotive driving conditions. The included angle between the heat dissipation fins 10 is 20°-40°, and the included angle range has been optimized for heat dissipation efficiency. At this angle, the air can flow smoothly along the fin surface, reducing airflow turbulence and improving convection heat dissipation efficiency. Several heat dissipation holes 4 are equidistantly opened on the edge of the heat dissipation fins 10. The heat dissipation holes 4 are circular through holes, and the axis of the heat dissipation holes 4 is perpendicular to the length direction of the heat dissipation fins 10. A bottom groove 7 is provided on one side of the groove 9. A T-shaped hole 6 is provided in the center of the bottom groove 7. T-shaped holes 2 are provided on both sides of the heat dissipation fins 10 of the heat dissipation plate 1. The T-shaped holes 6 and 2 form a multi-point fixation. With the installation function of the mounting plate, the radiator can be firmly connected to the body parts through fasteners to resist vehicle vibration and prevent loosening.

[0018] Working principle: The circuit board and heat sink 1 of this utility model are tightly fitted. The LED circuit board of the corner lamp is embedded in the groove 9 of the side 101 of the heat sink 1. The positioning post 8 in the groove 9 ensures that the circuit board and the bottom of the groove 9 are fitted without gaps, minimizing contact thermal resistance. The heat generated by the LED chip during operation is first conducted to the bottom surface of the circuit board through the circuit board substrate, and then directly transferred to the heat sink 1. The tight fit design can avoid heat retention caused by gaps. The heat sink 1 is made of modified thermally conductive plastic, which has basic thermal conductivity. The graphene composite coating on the outer surface of the heat sink 1 and the assembly plate can form a global heat conduction channel. Heat is rapidly diffused from the local area of ​​the heat sink 1 to the entire surface of the heat sink 1, including the heat dissipation fins 10 extending to the side 102, realizing the uniform transfer of heat from the concentrated area to the dispersed area and avoiding local overheating of the heat sink 1.

[0019] Area expansion and radiative heat dissipation of heat dissipation fins 10: Taking the basic embodiment as an example, the inclined heat dissipation fins 10 on the side 2 102 of the heat dissipation plate 1 can increase the heat dissipation area by 2-3 times compared to the finless structure. After the heat is transferred to the fins, part of it is transferred to the surrounding air through thermal radiation from the fin surface. Especially when the vehicle is stationary, this is the main heat dissipation path, which can meet the basic heat dissipation requirements of low-power cornering lights. Enhanced synergy between heat dissipation holes 4 and airflow: When the vehicle is in motion, the air flows along the surface of the vehicle body. The airflow entering the cornering light mounting cavity will flow along the heat dissipation fins 10. When the airflow passes through the gaps between the fins, it undergoes forced convection heat transfer with the fin surface, carrying away a large amount of heat. The circular heat dissipation holes 4 at the edge of the fins further break the thermal boundary layer on the fin surface, allowing cold air to penetrate the interior of the fins and fully contact the inner side of the fins, forming cross convection. Compared with finless fins, the convective heat dissipation efficiency can be effectively improved. The combination of the two convection methods can quickly remove the high heat generated by high-power cornering lights.

[0020] Mounting plate 1 (3) and L-shaped mounting plate 2 (5) can be adjusted and fixed according to the contour of the installation space. The short side of the L-shaped mounting plate can fit against the bent surface of the column, and mounting plate 1 (3) can avoid the wiring harness route, achieving obstacle avoidance and precise fixing, ensuring that the radiator does not squeeze surrounding components after installation, while keeping the heat dissipation fins 10 and the air circulation channel unobstructed. Multi-point fixing and structural strength design: High-frequency vibration will occur during vehicle operation. If the radiator is loosely fixed, it will cause the gap between the circuit board and the heat dissipation plate 1 to increase, and may even damage the heat dissipation fins 10. T-shaped holes 1 (6) in the bottom groove 7, T-shaped holes 2 (2) on both sides of the heat dissipation fins 10, and mounting holes on the mounting plate form 3-6 fixing points, which are rigidly connected to the body and corner lamp housings by bolts.

[0021] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A car corner light radiator, characterized in that, The device includes a heat sink (1), which is fixed with an assembly plate (3) and an assembly plate (5) with an L-shaped cross section. The heat sink (1) includes a side panel (101) and a side panel (102). The side panel (101) has a groove (9) for assembling a corner lamp circuit board. The groove (9) has a circuit board positioning post (8). A bottom groove (7) is provided on one side of the groove (9). A T-shaped hole (6) is provided in the center of the bottom groove (7). A plurality of inclined heat dissipation fins (10) are fixed on the side panel (102) of the heat sink (1). A plurality of heat dissipation holes (4) are provided at equal intervals on the edges of the heat dissipation fins (10). The heat sink (1) has T-shaped holes (2) on both sides of the heat dissipation fins (10).

2. The automotive corner light radiator according to claim 1, characterized in that, The heat dissipation fins (10) and the heat dissipation plate (1) are integrally injection molded, and the included angle between the heat dissipation fins (10) is 20°-40°.

3. A car corner light radiator according to claim 2, characterized in that, The heat dissipation hole (4) is a circular through hole, and the axis of the heat dissipation hole (4) is perpendicular to the length direction of the heat dissipation fin (10).

4. The automotive corner light radiator according to claim 1, characterized in that, Both the first assembly plate (3) and the second assembly plate (5) are provided with circular mounting holes.

5. A car corner light radiator according to claim 1, characterized in that, The outer surfaces of the heat sink (1), assembly plate one (3) and assembly plate two (5) are all provided with a thermally conductive coating, which is made of graphene composite coating.

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