Laser light source shell structure with heat dissipation function

Abstract

The utility model belongs to the technical field of laser light sources, and particularly relates to a laser light source shell structure with a heat dissipation function, which comprises a shell and a base, a laser light source is arranged on the base, the laser light source and the base are both positioned in the shell, the laser light source and the base are both in interference fit with the shell, and the laser light source is arranged on the base. The laser light source is arranged on the base, a positive electrode and a negative electrode are arranged at the bottom of the laser light source, a plurality of cooling fins are uniformly distributed on the outer side wall of the shell and surround the outer circumference of the shell, a through hole is formed in the base, the positive electrode and the negative electrode are located in the through hole, and a circuit board is arranged at the bottom of the base. By arranging the shell, the base and the laser light source which are in interference fit and arranging the cooling fins outside the shell, dissipation of internal heat can be accelerated, and the situation that the service life of the light source is affected due to the fact that the internal heat is too high is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of laser light sources, and in particular relates to a laser light source shell structure with a heat dissipation function. Background Art

[0002] Laser light source is an electric light source that uses excited particles to emit light under stimulated radiation. With the application of new technologies and the improvement of processes in recent years, laser light sources have been widely studied in the field of automotive lighting as the fifth generation of automotive headlight light sources, and have achieved initial application.

[0003] The existing laser light source products all have an integrated outer shell. For example, a laser light source module with application number CN202111175007.3 has a first mounting hole and a second mounting hole on both sides of the inside of the laser fixing seat, respectively. The blue laser light source is arranged in the first mounting hole, and the direct laser light source is arranged in the second mounting hole. The lens fixing seat is fixed to one side of the top of the laser fixing seat, and the lens fixing seat is located above the first mounting hole. The lens is arranged in the lens fixing seat, and the mounting plate is fixed to the other side of the top of the laser fixing seat. A direct hole is arranged on the side of the mounting plate away from the lens mounting seat, and the direct hole corresponds to the position of the second mounting hole. The blue light LED chip is arranged on the upper surface of the side of the mounting plate close to the lens mounting seat, and the yellow fluorescent sheet is located above the blue light LED chip.

[0004] When the laser is working for a long time, the heat generated cannot be dissipated in time, which will not only affect the output wavelength of the laser light source, but also cause changes in the threshold current, further leading to changes in the output optical power, accelerating the attenuation of the light source parameters, and seriously affecting the service life of the light source. Utility Model Content

[0005] The purpose of the utility model is to provide a laser light source housing structure with a heat dissipation function to solve the problems raised in the above background technology.

[0006] In order to achieve the above technical purpose, the technical solution of the utility model is:

[0007] A laser light source housing structure with a heat dissipation function comprises a housing and a base, wherein a laser light source is arranged on the base, the laser light source and the base are both located in the housing, the laser light source and the base are both interference fit with the housing, positive and negative electrodes are arranged at the bottom of the laser light source, a plurality of heat sinks are evenly distributed on the outer side wall of the housing, the plurality of heat sinks surround the outer circumference of the housing, a through hole is arranged on the base, the positive and negative electrodes are located in the through hole, and a circuit board is arranged at the bottom of the base.

[0008] As an improvement, two first fool-proofing structures extending in the vertical direction are symmetrically provided on the outer side wall of the base, and two second fool-proofing structures corresponding to the first fool-proofing structures are provided on the inner side wall of the shell.

[0009] As a further improvement, the first fool-proof structure and the second fool-proof structure are both grooves.

[0010] As a further improvement, the bottom of the shell and the positions corresponding to the two second fool-proofing structures are each provided with an opening, the two openings both penetrate the side wall of the shell, and the first fool-proofing structure, the second fool-proofing structure and the openings form a heat dissipation channel.

[0011] As a further improvement, two groups of chamfer groove structures are provided on the inner wall of the shell, and the two groups of chamfer groove structures are respectively connected to the outer wall of the laser light source and the outer wall of the base. One group of chamfer groove structures is set at a position corresponding to the highest point of the connection between the side wall of the laser light source and the inner wall of the shell, and the other group of chamfer groove structures corresponds to the highest point of the connection between the outer wall of the base and the inner wall of the shell.

[0012] As a further improvement, each group of the chamfered groove structures includes a plurality of chamfered grooves, and the chamfered grooves include an inclined side wall and a straight side wall, and the inclined side wall is located below the straight side wall.

[0013] As a further improvement, a plurality of placement cavities for mounting optical elements are provided inside the shell, a heat conducting plate is provided inside the side wall of the shell, and the heat conducting plate is arranged along the circumference of the shell.

[0014] Due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0015] The utility model provides a laser light source housing structure with a heat dissipation function. By arranging an interference-fit housing, a base and a laser light source, and arranging a heat sink on the outside of the housing, it is possible to accelerate the dissipation of internal heat and prevent excessive internal heat from affecting the service life of the light source. In addition, a heat conduction plate is arranged inside the side wall of the housing, so that the heat inside the housing can be quickly transferred to the external heat sink, preventing the heat inside the housing from being in a high state for a long time.

[0016] The first fool-proof structure and the second fool-proof structure can speed up the installation efficiency and accuracy of the base, and the first fool-proof structure, the second fool-proof structure and the opening form a heat dissipation channel, which can further speed up the dissipation of heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a cross-sectional view of this embodiment;

[0018] Figure 2is a bottom view of the present embodiment;

[0019] Figure 3 yes Figure 1 A magnified view of part A;

[0020] Among them: 1-housing, 2-base, 3-laser light source, 4-heat sink, 5-circuit board, 6-heat conducting plate, 7-chamfered groove, 8-oblique side wall, 9-straight side wall, 10-first fool-proof structure, 11-second fool-proof structure, 13-opening. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the specific implementation methods and the accompanying drawings. The accompanying drawings are only for illustrative purposes and are only schematic diagrams, not actual drawings, and should not be construed as limiting the present application. In order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. It is understandable to those skilled in the art that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0022] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on the present application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0023] like Figure 1-3 As shown, a laser light source housing structure with a heat dissipation function includes a housing 1 and a base 2. The base 2 is arranged at a lower position inside the housing 1. The base 2 and the housing 1 are interference fit. A laser light source 3 is arranged on the base 2. The laser light source 3 and the housing 1 are also interference fit, that is, the inner diameter of the housing 1 is smaller than the outer diameters of the base 2 and the laser light source 3. During the assembly process, the laser light source 3 and the base 2 are pressed into the housing 1 in sequence by a tool.

[0024] In this embodiment, a plurality of heat sinks 4 are evenly distributed on the outer wall of the outer shell 1, and the plurality of heat sinks 4 are arranged around the outer circumference of the outer shell 1. By setting the base 2 and the outer shell 1, and the interference fit between the laser light source 3 and the outer shell 1, the purpose of dissipating the heat generated by the laser light source 3 is achieved, and the heat sink 4 can enhance the heat dissipation efficiency.

[0025] Preferably, positive and negative electrodes are provided at the bottom of the laser light source 3 , a through hole is provided on the base 2 , the positive and negative electrodes are located in the through hole, and a circuit board 5 is provided at the bottom of the base 2 .

[0026] Preferably, the interior of the shell 1 is provided with a plurality of placement cavities for installing optical elements, for example, the interior of the shell 1 is provided with a reflective cup placement cavity, the interior of the side wall of the shell 1 is provided with a heat conducting plate 6, the heat conducting plate 6 is arranged along the circumference of the shell 1, and the heat conducting plate 6 is made of a material with high thermal conductivity efficiency, for example, graphene, thermal conductive silicone sheet and other materials can be used. Since the thermal conductivity of the heat conducting plate 6 is very high, it can accelerate the heat transfer toward the heat sink 4, so that the temperature inside the shell 1 will not be too high.

[0027] In this embodiment, two groups of chamfer groove structures are provided on the inner wall of the shell 1, and the two groups of chamfer groove structures are respectively connected to the outer wall of the laser light source 3 and the outer wall of the base 2. The setting position of one group of chamfer groove structures corresponds to the position of the highest point of the connection between the side wall of the laser light source 3 and the inner wall of the shell 1, and the other group of chamfer groove structures corresponds to the position of the highest point of the connection between the outer wall of the base 2 and the inner wall of the shell 1. Each group of chamfer groove structures includes a plurality of chamfer grooves 7, and the chamfer groove 7 includes an inclined side wall 8 and a straight side wall 9. The inclined side wall 8 is located below the straight side wall 9. When the laser light source 3 and the base 2 are pressed into the shell 1, debris may be generated due to the extrusion force. By setting the chamfer groove structure, the generated debris will enter the chamfer groove 7.

[0028] In this embodiment, two first fool-proofing structures 10 extending in the vertical direction are symmetrically provided on the outer wall of the base 2, and two second fool-proofing structures 11 corresponding to the first fool-proofing structures 10 are provided on the inner wall of the outer shell 1. When installing the base 2, the first fool-proofing structures 10 and the second fool-proofing structures 11 correspond to each other, thereby improving the efficiency and accuracy of assembly.

[0029] In this embodiment, the first fool-proofing structure 10 and the second fool-proofing structure 11 are both grooves, and openings 13 are provided at the bottom of the outer shell 1 at positions corresponding to the two second fool-proofing structures 11. The two openings 13 pass through the side wall of the outer shell 1. The first fool-proofing structure 10, the second fool-proofing structure 11 and the openings 13 form a heat dissipation channel to further accelerate the speed of heat dissipation.

[0030] The utility model can accelerate the dissipation of internal heat and prevent excessive internal heat from shortening the service life of the light source by arranging an interference-fit shell, a base and a laser light source and arranging a heat sink on the outside of the shell.

[0031] The specific implementation methods of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A laser light source housing structure with heat dissipation function, comprising a housing and a base, characterized in that: A laser light source is provided on the base, and both the laser light source and the base are located in the shell, and both the laser light source and the base are interference fit with the shell, and positive and negative electrodes are provided at the bottom of the laser light source, and a plurality of heat sinks are evenly distributed on the outer wall of the shell, and the plurality of heat sinks surround the outer circumference of the shell, and a through hole is provided on the base, and the positive and negative electrodes are located in the through hole, and a circuit board is provided at the bottom of the base.

2. The laser light source housing structure with heat dissipation function according to claim 1, characterized in that: Two first fool-proofing structures extending in a vertical direction are symmetrically arranged on the outer side wall of the base, and two second fool-proofing structures corresponding to the first fool-proofing structures are arranged on the inner side wall of the shell.

3. The laser light source housing structure with heat dissipation function according to claim 2, characterized in that: The first fool-proof structure and the second fool-proof structure are both grooves.

4. The laser light source housing structure with heat dissipation function according to claim 3, characterized in that: The bottom of the shell and the positions corresponding to the two second fool-proof structures are each provided with an opening, and the two openings both penetrate the side wall of the shell, and the first fool-proof structure, the second fool-proof structure and the opening form a heat dissipation channel.

5. The laser light source housing structure with heat dissipation function according to any one of claims 1 to 4, characterized in that: Two groups of chamfered groove structures are provided on the inner wall of the shell, and the two groups of chamfered groove structures are respectively connected to the outer wall of the laser light source and the outer wall of the base. One group of chamfered groove structures is set at a position corresponding to the highest point of the connection between the side wall of the laser light source and the inner wall of the shell, and the other group of chamfered groove structures corresponds to the highest point of the connection between the outer wall of the base and the inner wall of the shell.

6. The laser light source housing structure with heat dissipation function according to claim 5, characterized in that: Each group of the chamfered groove structures includes a plurality of chamfered grooves, and the chamfered grooves include an inclined side wall and a straight side wall, wherein the inclined side wall is located below the straight side wall.

7. The laser light source housing structure with heat dissipation function according to claim 6, characterized in that: A plurality of placement cavities for mounting optical elements are arranged inside the shell, a heat conducting plate is arranged inside the side wall of the shell, and the heat conducting plate is arranged along the circumference of the shell.

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