Heat dissipation structure of car lamp assembly

Abstract

The utility model discloses a car lamp assembly heat dissipation structure which comprises an aluminum substrate, a plurality of LED lamp wicks which are evenly and orderly distributed are arranged on the upper surface of the aluminum substrate, a heat conduction plate is arranged in the middle of the bottom of the aluminum substrate, and a plurality of first heat dissipation pieces which are distributed at equal intervals are arranged in the middle of the bottom of the heat conduction plate. A first ventilation opening is formed between every two adjacent first cooling fins, and a plurality of second cooling fins distributed at equal intervals are arranged at the positions, located at the bottom of the aluminum substrate, of the left side and the right side of the heat conduction plate. In the driving process of an automobile, cold air enters from the automobile engine air inlet grid and takes away heat generated by the LED lamp wicks along the first ventilation opening and the second ventilation opening, and the cold air carrying the heat is changed into hot air to be exhausted from the automobile side face exhaust grid. Heat from the LED lamp wick to the cooling fins is collected through the first ventilation opening and the second ventilation opening and discharged along with severe convection cold air of the air inlet grid, and the higher the vehicle speed is, the better the cooling effect is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of automotive lighting technology, and in particular relates to a heat dissipation structure for an automotive lighting assembly. Background Technology

[0002] Vehicle lights are tools for illuminating roads at night and for issuing various vehicle traffic signals. Vehicle lights are generally divided into headlights, taillights, turn signals, etc. Over time, the heat inside the lens of a vehicle light gradually increases, which can cause the lens color to change and affect the light's illumination. To mitigate this, appropriate heat dissipation structures are installed inside the vehicle lights to exchange the heat.

[0003] There are many ways to reduce the temperature of high-power LED chips in automotive applications, such as active cooling (adding fans), passive cooling (heat sinks), heat pipe cooling, and strong convection cooling. Fan cooling increases costs and occupies more space; heat pipe cooling has low stability and is relatively expensive. Utility Model Content

[0004] The purpose of this utility model is to provide a heat dissipation structure for a vehicle lighting assembly to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the specific technical solution of this utility model is as follows: A heat dissipation structure for a vehicle lamp assembly includes an aluminum substrate. A plurality of uniformly and orderly distributed LED lamp cores are disposed on the upper surface of the aluminum substrate. A heat-conducting plate is disposed in the middle part of the bottom of the aluminum substrate. A plurality of equally spaced first heat sinks are disposed in the middle part of the bottom of the heat-conducting plate, and a first ventilation opening is formed between each two adjacent first heat sinks. A plurality of equally spaced second heat sinks are disposed on both the left and right sides of the heat-conducting plate at the bottom of the aluminum substrate, and a second ventilation opening is formed between each two adjacent second heat sinks.

[0006] Preferably, the heat-conducting plate has a U-shaped structure and is made of copper.

[0007] Preferably, the long side of the heat-conducting plate is parallel to the long side of the aluminum substrate, and the directions of the first vent, the second vent, and the heat-conducting plate are all parallel to the long side of the heat-conducting plate.

[0008] Preferably, the end of the second heat sink away from the heat-conducting plate extends to the outer side of the aluminum substrate.

[0009] Preferably, the surface of the first heat sink has a plurality of equally spaced first U-shaped openings along its length.

[0010] Preferably, the surface of the second heat sink is provided with a plurality of equally spaced second U-shaped openings along its width direction.

[0011] The heat dissipation structure for a vehicle headlight assembly according to this utility model has the following advantages:

[0012] 1. This utility model utilizes the cooling effect of cold air entering through the engine intake grille during vehicle operation. The heat generated by the LED light core is carried away along the first and second vent channels. The cold air, carrying heat, becomes hot air and exits through the side exhaust grille. Heat from the LED light core to the heat sink is collected through the first and second vents and expelled with the strong convection of the cold air from the intake grille. The faster the vehicle speed, the better the cooling effect. Compared to heat pipe cooling, this method does not require a complex system, has better stability, and lower cost; compared to fan-type heat sinks, the heat sink does not affect the sealing of the LED headlight and has greater flexibility in shaping.

[0013] 2. By setting a first U-shaped opening on the first heat sink and a second U-shaped opening on the second heat sink, this utility model greatly increases the contact area between the heat sink and the airflow, thereby further improving the heat dissipation effect. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

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

[0016] Figure 2 for Figure 1 A structural diagram from another perspective;

[0017] Figure 3 for Figure 1 Front view;

[0018] Figure 4 This is a schematic diagram of the structure of the first heat sink in this utility model.

[0019] The markings in the diagram are as follows: 1. Aluminum substrate; 2. LED chip; 3. Heat-conducting plate; 4. First heat sink; 5. Second heat sink; 6. First vent; 7. Second vent; 8. Second U-shaped opening; 9. First U-shaped opening. Detailed Implementation

[0020] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0021] In the description of the embodiments of this utility model, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0024] The following disclosure provides many different implementations or examples for different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0025] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of a heat dissipation structure for a vehicle headlight assembly.

[0026] like Figure 1-4As shown, this utility model discloses a heat dissipation structure for a vehicle lamp assembly, comprising an aluminum substrate 1. Multiple LED chips 2 are evenly and orderly distributed on the upper surface of the aluminum substrate 1. A heat-conducting plate 3 is disposed in the middle of the bottom of the aluminum substrate 1. The heat-conducting plate 3 has a U-shaped structure and is made of copper. By using copper for the heat-conducting plate 3, the thermal conductivity is greatly improved. Multiple equally spaced first heat sinks 4 are disposed in the middle of the bottom of the heat-conducting plate 3, and a first ventilation opening 6 is formed between each pair of adjacent first heat sinks 4. Multiple equally spaced second heat sinks 5 are disposed on both the left and right sides of the heat-conducting plate 3 at the bottom of the aluminum substrate 1, and a second ventilation opening 7 is formed between each pair of adjacent second heat sinks 5. The long side of the heat-conducting plate 3 is parallel to the long side of the aluminum substrate 1. The directions of the first ventilation opening 6 and the second ventilation opening 7 are both parallel to the long side of the heat-conducting plate 3. Through the cooperation between the first ventilation opening 6 and the second ventilation opening 7, cool air enters through the engine intake grille when the car is in motion. The heat generated by the LED chip 2 is carried away through the first vent 6 and the second vent 7. The cool air, carrying the heat, becomes hot air and is discharged from the exhaust grille on the side of the car. The heat from the LED chip 2 to the heat sink is collected through the first vent 6 and the second vent 7 and discharged with the strong convection of the cool air from the intake grille. The faster the vehicle speed, the better the heat dissipation effect. Compared with heat pipe cooling, this heat dissipation method does not require a complex system, has better stability, and lower cost; compared with fan cooling fins, the heat sink does not affect the sealing of the LED headlight and has strong plasticity.

[0027] The second heat sink 5 extends to the outer side of the aluminum substrate 1 from the end away from the heat-conducting plate 3. The surface of the first heat sink 4 is provided with a plurality of equally spaced first U-shaped openings 9 along its length direction, and the surface of the second heat sink 5 is provided with a plurality of equally spaced second U-shaped openings 8 along its width direction. By setting the first U-shaped openings 9 on the first heat sink 4 and the second U-shaped openings 8 on the second heat sink 5, the contact area between the heat sink and the airflow is greatly increased, thereby further improving the heat dissipation effect.

[0028] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A heat dissipation structure for a vehicle lamp assembly, characterized by: The utility model relates to an aluminum substrate (1) is provided with a plurality of LED lampwick (2) of uniform order distribution on the upper surface, the bottom middle part of aluminum substrate (1) is provided with heat conduction plate (3), the bottom middle part of heat conduction plate (3) is provided with a plurality of first fin (4) of equidistance distribution, and the first ventilation opening (6) is formed between every two adjacent first fin (4), and the left and right sides of heat conduction plate (3) are provided with a plurality of second fin (5) of equidistance distribution at the bottom of aluminum substrate (1), and the second ventilation opening (7) is formed between every two adjacent second fin (5).

2. The heat dissipation structure of a vehicle lamp assembly according to claim 1, characterized in that: The heat conduction plate (3) is U-shaped structure, and the heat conduction plate (3) is made of copper.

3. The heat dissipation structure for a vehicle lamp assembly of claim 1, wherein: The long side of the heat conduction plate (3) is parallel to the long side of the aluminum substrate (1), and the first ventilation opening (6), the second ventilation opening (7) and the direction of the heat conduction plate (3) are parallel to the long side of the heat conduction plate (3).

4. The heat dissipation structure for a vehicle lamp assembly of claim 1, wherein: The second fin (5) extends to the outside of the aluminum substrate (1) at the end away from the heat conduction plate (3).

5. The heat dissipation structure for a vehicle lamp assembly of claim 1, wherein: The surface of the first fin (4) is provided with a plurality of first U-shaped openings (9) along the length direction.

6. The heat dissipating structure for a vehicle lamp assembly of claim 1, wherein: The surface of the second fin (5) is provided with a plurality of second U-shaped openings (8) along the width direction.

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