A vehicle lamp heat sink

Abstract

The utility model discloses a car lamp radiator, including bottom shell, the top of bottom shell is provided with the fin, the right side of bottom shell is installed with two first connecting ears, the left side of bottom shell is installed with second connecting ear, the top of first connecting ear and the top of second connecting ear all are equipped with mounting hole. The utility model discloses a split type design of bottom shell is made by adopting ADC12 material, and the fin of pure aluminum sheet 1060 makes, and the structure strength and heat dissipation efficiency are given full play to, and the material strength of ADC12 is high, and moreover easily pressure casting complex structure, can satisfy the inside installation demand of car lamp and is not easy to deform, and the thermal conductivity of pure aluminum sheet 1060 is high, and the heat dissipation attenuation is small, and the heat dissipation contact area is increased with U-shaped fin structure, effectively solve the contradiction that the traditional single material radiator is poor in heat dissipation or easy to deform, through the interference fit of positioning column and fin through -hole and the welding double -fixed mode, the accurate positioning and firm connection of fin are realized.

Description

Technical Field

[0001] This utility model relates to the field of vehicle lamp radiator technology, specifically a vehicle lamp radiator. Background Technology

[0002] With the development of automotive lighting technology, LED headlights are widely used due to their advantages of low energy consumption, long lifespan, and high brightness. However, LED chips generate a lot of heat when they are working. If the heat cannot be dissipated in time, it will cause the chip junction temperature to rise, which will not only reduce the luminous efficiency of the headlight and shorten its lifespan, but may also cause problems such as optical performance degradation and color shift. Therefore, headlight heat sinks are needed.

[0003] Traditional automotive headlight heat sinks use a one-piece die-cast structure, often made of a single ADC12 die-cast aluminum material. While this provides a certain level of strength, the low thermal conductivity of ADC12 makes it difficult to meet the heat dissipation requirements of high-power LED headlights. Meanwhile, some heat sinks are made of pure aluminum in a single piece. Although this material has good thermal conductivity, pure aluminum lacks strength and is prone to deformation during assembly and use. Furthermore, it is difficult to form complex installation structures, resulting in poor adaptability. Additionally, the connection between some heat sink fins and the base shell is often simply welded without a positioning structure. This simple welding can easily lead to loosening due to thermal stress, causing heat sink fin misalignment and affecting heat dissipation. Therefore, we provide a new type of automotive headlight heat sink. Utility Model Content

[0004] The purpose of this invention is to provide a vehicle headlight radiator to solve the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a vehicle headlight radiator, including a bottom shell, a heat sink provided on the top of the bottom shell, two first connecting ears installed on the right side of the bottom shell, and a second connecting ear installed on the left side of the bottom shell, wherein mounting holes are provided on the top of both the first connecting ears and the top of the second connecting ears.

[0006] Optionally, the number of heat sinks is several and they are evenly spaced on the top of the bottom shell. Several positioning posts are installed on the top of the bottom shell at positions corresponding to the heat sinks. The heat sinks are fixedly connected to the bottom shell by welding.

[0007] Optionally, the top of the positioning post penetrates the heat sink and extends to its exterior, and the surface of the positioning post is interference-fitted with the inner wall of the heat sink's through hole.

[0008] Optionally, the heat sink is made of pure aluminum sheet 1060, the heat sink is U-shaped, and the bottom shell is made of ADC12.

[0009] Optionally, the thickness of the first connecting ear and the second connecting ear is 3-5mm, the edges of the first connecting ear and the second connecting ear are provided with rounded corner structures, the radius of the rounded corners is 1-2mm, and the first connecting ear and the second connecting ear are integrally die-cast with the bottom shell.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] This utility model employs a split design, using ADC12 material for the base shell and 1060 pure aluminum sheets for the heat sink, balancing structural strength and heat dissipation efficiency. ADC12 material boasts high strength and is easily die-cast into complex structures, meeting the internal installation requirements of automotive lights without easily deforming. 1060 pure aluminum sheets have high thermal conductivity and low heat dissipation attenuation. Combined with the U-shaped heat sink structure, it increases the heat dissipation contact area, effectively solving the contradictions of poor heat dissipation or easy deformation in traditional single-material heat sinks. Through the interference fit of the positioning pins and the heat sink through-holes, as well as welding, a dual fixing method is used to achieve precise positioning and firm connection of the heat sink. The positioning pins first limit the heat sink to prevent misalignment during assembly, and then welding strengthens the connection stability, effectively avoiding the loosening problem caused by thermal stress in traditional simple welding, ensuring unobstructed heat dissipation paths, and improving the consistency of heat dissipation effect. Attached Figure Description

[0012] Figure 1 This is a structural cross-sectional view of the front view of this utility model;

[0013] Figure 2 This is a top view of the structure of this utility model.

[0014] In the diagram: 1. Bottom shell; 2. Heat sink; 3. First connecting ear; 4. Second connecting ear; 5. Mounting hole; 6. Positioning post. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-2A vehicle headlight heat sink includes a base shell 1. A heat sink 2, made of pure aluminum 1060, is mounted on the top of the base shell 1. The heat sink 2 can quickly conduct and dissipate the heat generated by the LED chip, ensuring the stability of the headlight's optical performance. The heat sink 2 is U-shaped, which increases the contact area with air. Its equidistant arrangement allows for smoother airflow and more uniform heat dissipation. The base shell 1, made of ADC12, serves as the supporting foundation for the heat sink, supporting the heat sink 2 and connecting ears, and providing an installation reference for the internal components of the headlight. Two first connecting ears 3 are mounted on the right side of the base shell 1, and a second connecting ear 4 is mounted on the left side. Mounting holes 5 are provided on the top of both the first connecting ears 3 and the second connecting ears 4. The thickness of the first connecting ear 3 and the second connecting ear 4 is 3-5mm. The edges of the first connecting ear 3 and the second connecting ear 4 are provided with rounded corner structures with a radius of 1-2mm. The first connecting ear 3 and the second connecting ear 4 are integrally die-cast with the bottom shell 1. The bottom shell 1 is made of ADC12, which makes the bottom shell 1 strong and not easily deformed, and can be made into complex structures, which facilitates the installation and design inside the headlight. The heat sink 2 is made of pure aluminum sheet 1060. Pure aluminum sheet 1060 material has a high thermal conductivity and a small thermal conductivity decay, thereby reducing the overall product weight and reducing manufacturing costs. The heat sink 2 is formed by stamping, and the bottom shell 1 is formed by die casting. The first connecting ear 3 and the second connecting ear 4 serve as the connection medium between the heat sink and the headlight, transmitting the installation and fixing force. The bottom shell 1 can be installed in the position of the headlight through the mounting hole 5 and bolts.

[0017] The heat sink 2 is arranged at equal intervals on the top of the bottom shell 1. Several positioning posts 6 are installed on the top of the bottom shell 1 at the positions corresponding to the heat sink 2. The heat sink 2 is fixedly connected to the bottom shell 1 by welding. The top of the positioning post 6 penetrates the heat sink 2 and extends to its outside. The surface of the positioning post 6 is interference-fitted with the inner wall of the through hole of the heat sink 2. The positioning post 6 realizes the precise positioning of the heat sink 2 and the bottom shell 1, and plays an auxiliary role in the fixed connection.

[0018] In use, the heat sink is aligned with the preset mounting position of the car light through the mounting holes 5 on the first connecting ear 3 and the second connecting ear 4. The adapter bolt is inserted through the mounting holes 5 and locked in place. When the car light is working, the heat generated by the LED chip will be quickly transferred to the bottom shell 1 of the ADC12 material, and at the same time, the heat will be evenly conducted to each U-shaped heat sink 2, which can quickly dissipate the heat.

[0019] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vehicle headlight radiator, characterized in that: Includes a bottom shell (1), the top of which is provided with a heat sink (2), two first connecting ears (3) are installed on the right side of the bottom shell (1), and a second connecting ear (4) is installed on the left side of the bottom shell (1). The top of the first connecting ear (3) and the top of the second connecting ear (4) are both provided with mounting holes (5).

2. The vehicle headlight radiator according to claim 1, characterized in that: The number of heat sinks (2) is several and they are evenly spaced on the top of the bottom shell (1). Several positioning posts (6) are installed on the top of the bottom shell (1) at the positions corresponding to the heat sinks (2). The heat sinks (2) are fixedly connected to the bottom shell (1) by welding.

3. The vehicle headlight radiator according to claim 2, characterized in that: The top of the positioning post (6) penetrates the heat sink (2) and extends to its outside. The surface of the positioning post (6) is interference-fitted with the inner wall of the through hole of the heat sink (2).

4. The vehicle headlight radiator according to claim 1, characterized in that: The heat sink (2) is made of pure aluminum sheet 1060, the heat sink (2) is U-shaped, and the bottom shell (1) is made of ADC12.

5. The vehicle headlight radiator according to claim 1, characterized in that: The thickness of the first connecting ear (3) and the second connecting ear (4) is 3-5mm. The edges of the first connecting ear (3) and the second connecting ear (4) are provided with rounded corner structures with a radius of 1-2mm. The first connecting ear (3) and the second connecting ear (4) are integrally die-cast with the bottom shell (1).

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