Novel automobile headlamp LED lamp bead heat dissipation structure

Abstract

The utility model discloses a novel automobile headlamp LED lamp bead heat dissipation structure which comprises two LED lamp beads, a copper substrate and an outer shell, the LED lamp beads are installed on the two sides of the copper substrate, sintering heat conduction pipes are arranged on the two sides of the copper substrate, the sides, away from the LED lamp beads, of the copper substrate and the sintering heat conduction pipes are jointly sleeved with a radiator, the side, close to the LED lamp beads, of the radiator is provided with a PCBA board in an embedded mode, and the PCBA board is connected with the copper substrate and the sintering heat conduction pipes in an embedded mode. The PCBA plate is also arranged on the outer side of the sintering heat conduction pipe in a sleeving mode, a cooling fan is arranged on the side, opposite to the PCBA plate, of the radiator, and the copper substrate, the sintering heat conduction pipe and the cooling fan are all installed in the shell. By means of the structure, the radiator is matched with the cooling fan, a good cooling effect can be achieved, the size of the radiator and the size of the cooling fan can be properly reduced, the outer shell is made to be smaller, the outer shell can be installed in an automobile headlamp assembly more conveniently, and the outer shell is made of plastic, zinc alloy and other materials which are convenient to form integrally. The manufacturing cost is low, and the process of the shell has more choices, so that the shape is richer.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a novel heat dissipation structure for LED lamp beads of an automobile headlamp. Background Technique

[0002] Automobile headlamps are crucial components in a vehicle's lighting system, and their main function is to provide visibility for drivers during night driving and in adverse weather conditions. Among them, LED lamps have advantages such as high luminous efficiency, low energy consumption, high reliability, long lifespan, environmental protection, and small size. Currently, people generally use LED lamps as automobile front lamps. The design of headlamps not only needs to meet lighting requirements but also takes into account various factors such as safety, aesthetics, and energy efficiency.

[0003] Currently, the technical requirements for automobile headlights are getting higher and higher, with higher brightness and faster response time. This makes the power of LED automobile headlights relatively high during use, generating a large amount of heat, which easily causes the temperature of the LED automobile headlights to rise and affects the service life of the LED lamp beads. Traditional LED vehicle lamps generally rely on an aluminum profile shell for heat dissipation. The aluminum shell not only needs to be manufactured using complex CNC processing technology but also needs to maintain a certain volume to provide sufficient heat dissipation surface area to ensure good heat dissipation effects. However, this increase in volume brings inconvenience during installation, especially inside the automobile headlamp assembly with limited space, which may lead to increased installation difficulty and affect the aesthetics and functionality of the overall design. Therefore, the utility model provides a novel heat dissipation structure for LED lamp beads of an automobile headlamp to solve the problems raised in the above background technique. Content of the Utility Model

[0004] The purpose of the utility model is to provide a novel heat dissipation structure for LED lamp beads of an automobile headlamp. By setting a section of radiator and a cooling fan in cooperation, good heat dissipation effects can be achieved, which is conducive to appropriately reducing the volume of the radiator and the cooling fan, making the outer shell smaller in shape and more convenient to install inside the automobile headlamp assembly. Moreover, the outer shell is made of materials such as plastic and zinc alloy that are convenient for integral molding, with low manufacturing cost, and there are more choices for the process of the outer shell, resulting in a more diverse shape.

[0005] To achieve the above purpose, a novel heat dissipation structure for LED lamp beads of an automobile headlamp is provided, which includes two LED lamp beads, a copper substrate, and an outer shell. The LED lamp beads are installed on both sides of the copper substrate. Sintered heat pipes are provided on both sides of the copper substrate. A radiator is sleeved together on the side of the copper substrate and the sintered heat pipes away from the LED lamp beads. A PCBA board is embedded on the side of the radiator close to the LED lamp beads, and the PCBA board is also sleeved outside the sintered heat pipes. A cooling fan is provided on the side of the radiator opposite to the PCBA board. The copper substrate, the sintered heat pipes, and the cooling fan are all installed inside the outer shell.

[0006] According to the described heat dissipation structure for the LED lamp beads of a new type of automotive headlight, the radiator is an aluminum extrusion fin radiator, and its surface is provided with a chemically nickel-plated coating.

[0007] According to the described heat dissipation structure for the LED lamp beads of a new type of automotive headlight, solder paste is provided at the joint between the LED lamp bead and the copper substrate.

[0008] According to the described heat dissipation structure for the LED lamp beads of a new type of automotive headlight, solder paste is also provided at the joints between the copper substrate and the sintered heat conduction tube and the radiator.

[0009] According to the described heat dissipation structure for the LED lamp beads of a new type of automotive headlight, the direction of the air flow of the cooling fan blows towards the radiator.

[0010] According to the described heat dissipation structure for the LED lamp beads of a new type of automotive headlight, the housing is integrally formed.

[0011] The present utility model has the following beneficial effects:

[0012] 1. Compared with the prior art, for this heat dissipation structure for the LED lamp beads of a new type of automotive headlight, compared with the traditional LED vehicle headlights that rely solely on the profile aluminum housing for heat dissipation using a complex CNC processing technology, in this application, by setting a section of radiator and a cooling fan in cooperation, a good heat dissipation effect can be achieved, thereby facilitating an appropriate reduction in the volume of the radiator and the cooling fan, making the housing smaller in shape and more convenient to install inside the automotive headlight assembly.

[0013] 2. Compared with the prior art, for this heat dissipation structure for the LED lamp beads of a new type of automotive headlight, the housing is manufactured using materials such as plastic and zinc alloy that are convenient for integral forming, with a low manufacturing cost, and there are more choices for the housing process, which can make the shape more diverse.

[0014] The additional aspects and advantages of the present utility model will be partially given in the following description, partially will become apparent from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following further illustrates the present utility model in conjunction with the drawings and embodiments;

[0016] Figure 1 is the overall structural schematic diagram of a heat dissipation structure for the LED lamp beads of a new type of automotive headlight of the present utility model;

[0017] Figure 2 is the sectional structural schematic diagram of a heat dissipation structure for the LED lamp beads of a new type of automotive headlight of the present utility model;

[0018] Figure 3 is for a heat dissipation structure for the LED lamp beads of a new type of automotive headlight of the present utility modelFigure 2 Schematic diagram of the split structure in the state.

[0019] Legend:

[0020] 1. LED lamp bead; 2. Copper substrate; 3. Sintered heat pipe; 4. PCBA board; 5. Radiator; 6. Cooling fan; 7. Outer shell. Specific implementation manners

[0021] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The function of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it should not be construed as a limitation on the protection scope of the present utility model.

[0022] Referring to Figures 1-3 , an LED lamp bead heat dissipation structure for a new type of automotive headlight in an embodiment of the present utility model includes two LED lamp beads 1, a copper substrate 2, and an outer shell 7. The LED lamp beads 1 are installed on both sides of the copper substrate 2. Solder paste is provided at the joint between the LED lamp beads 1 and the copper substrate 2. Sintered heat pipes 3 are provided on both sides of the copper substrate 2. A radiator 5 is sleeved together on the side of the copper substrate 2 and the sintered heat pipes 3 away from the LED lamp beads 1. Solder paste is also provided at the joint between the copper substrate 2 and the sintered heat pipes 3 and the radiator 5. A PCBA board 4 is embedded on the side of the radiator 5 close to the LED lamp beads 1. The PCBA board 4 is also sleeved outside the sintered heat pipe 3. A cooling fan 6 is provided on the side of the radiator 5 opposite to the PCBA board 4. The air flow direction of the cooling fan 6 blows towards the radiator 5. The copper substrate 2, the sintered heat pipes 3, and the cooling fan 6 are all installed inside the outer shell 7.

[0023] The LED lamp beads 1 are soldered to both sides of the copper substrate 2 with solder paste. Solder paste is also used to tightly weld between the copper substrate 2 and the sintered heat pipes 3. The copper substrate 2 and the sintered heat pipes 3 are inserted into the radiator 5 and the joint is filled and welded with solder paste, which is beneficial to reducing the gap at the joint to improve the heat conduction efficiency. When the LED lamp beads 1 work, the heat generated is quickly transferred to the radiator 5 through the copper substrate 2 and the sintered heat pipes 3, and then the heat is quickly dissipated by the cooling fan 6 blowing directly on the heat dissipation fins of the radiator 5, which can well improve the heat dissipation efficiency of the automotive headlight. And compared with traditional LED vehicle lamps, by setting a section of radiator 5 and a cooling fan 6 in cooperation, a good heat dissipation effect can be achieved, which is beneficial to appropriately reducing the volume of the radiator 5 and the cooling fan 6, making the outer shell 7 smaller in shape and more convenient to be installed inside the automotive headlight assembly.

[0024] The radiator 5 is an aluminum extrusion fin radiator. While the aluminum material ensures good heat conduction performance of the radiator 5, the aluminum extrusion process has good formability, which is convenient for manufacturing. Moreover, the surface of the radiator 5 is provided with a nickel electroless plating coating, which is convenient for soldering at the joints with the copper substrate 2 and the sintered heat pipe 3.

[0025] The housing 7 is integrally formed. Since the housing 7 does not need to dissipate heat, other materials such as plastic and zinc alloy that are convenient for integral forming can be used for the manufacturing process. The manufacturing cost is low, which allows for more choices in the process of the housing 7 and makes the shape more diverse.

[0026] Working principle: The LED lamp beads 1 are soldered on both sides of the copper substrate 2 with solder paste. Solder paste is also used to tightly weld between the copper substrate 2 and the sintered heat pipe 3. The copper substrate 2 and the sintered heat pipe 3 are inserted into the radiator 5 and the joints are filled and welded with solder paste, which helps to reduce the gap at the joints and improve the heat conduction efficiency. The heat generated when the LED lamp beads 1 work is quickly transferred to the radiator 5 through the copper substrate 2 and the sintered heat pipe 3, and then the heat dissipation fins of the radiator 5 are directly blown by the cooling fan 6, so that the heat can be quickly dissipated, which can well improve the heat dissipation efficiency of the automotive headlamp. And compared with traditional LED vehicle lamps, by setting a section of the radiator 5 and the cooling fan 6 to cooperate, a good heat dissipation effect can be achieved, which is conducive to appropriately reducing the volume of the radiator 5 and the cooling fan 6, making the shape of the housing 7 smaller and more convenient to be installed inside the automotive headlamp assembly;

[0027] Moreover, since the housing 7 does not need to dissipate heat, other materials such as plastic and zinc alloy that are convenient for integral forming can be used for the manufacturing process. The manufacturing cost is low, which allows for more choices in the process of the housing 7 and makes the shape more diverse.

[0028] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the said technical field, various changes can be made without departing from the gist of the present invention.

Claims

1. A new type of automotive headlight LED lamp bead heat dissipation structure, characterized in that: The invention comprises two LED lamp beads (1), a copper base plate (2) and a housing (7), wherein the LED lamp beads (1) are mounted on both sides of the copper base plate (2), sintered heat pipes (3) are provided on both sides of the copper base plate (2), a heat sink (5) is provided on the side of the copper base plate (2) and the sintered heat pipe (3) away from the LED lamp beads (1), a PCBA board (4) is embedded on the side of the heat sink (5) close to the LED lamp beads (1), the PCBA board (4) is also provided on the outside of the sintered heat pipe (3), a heat dissipation fan (6) is provided on the side of the heat sink (5) opposite to the PCBA board (4), and the copper base plate (2), the sintered heat pipe (3) and the heat dissipation fan (6) are all mounted inside the housing (7).

2. According to claim 1, a novel heat dissipation structure for LED lamp beads of automobile headlights is characterized in that: The heat sink (5) is configured as an aluminum extruded fin heat sink, and a chemical nickel coating is provided on the surface.

3. According to claim 2, a novel automotive headlight LED lamp bead heat dissipation structure is characterized in that: Solder paste is provided at the junction of the LED lamp bead (1) and the copper base plate (2).

4. According to claim 3, a novel automotive headlight LED lamp bead heat dissipation structure is characterized in that: Solder paste is also provided at the joints between the copper substrate (2), the sintered heat pipe (3) and the heat sink (5).

5. According to claim 4, a novel heat dissipation structure for LED lamp beads of automobile headlights is characterized in that: The wind direction of the cooling fan (6) blows towards the radiator (5).

6. The novel heat dissipation structure of LED lamp beads for automobile headlights according to claim 1 is characterized in that: The housing (7) is integrally formed.

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