Integrated laser shell structure with radiating fins

Abstract

The utility model provides an integrated laser shell structure with heat dissipation fins, which comprises a heat dissipation shell, an outer convex-concave cavity with an opening in one side is arranged in the heat dissipation shell, the opening side of the outer convex-concave cavity on the heat dissipation shell is used for being connected with a laser radar base body, a laser shell is arranged at the bottom end of the outer convex-concave cavity, and a laser cover body is arranged at one end of the laser shell. The laser shell is internally provided with a second cavity, the second cavity is used for placing a laser element, one side, far away from the laser radar base body, of the heat dissipation shell is provided with a plurality of heat dissipation fins, and the problem of rapid outward heat dissipation of the laser in the laser radar is solved.

Description

Technical Field

[0001] This utility model relates to the field of lidar, and in particular to an integrated laser housing structure with heat dissipation fins. Background Technology

[0002] In lidar equipment, the laser generates a significant amount of heat during operation. Effective thermal management not only improves the lidar's efficiency and stability but also extends its lifespan. Therefore, laser thermal management is a crucial consideration when designing a lidar system.

[0003] Because lasers are industry-standard components, traditional lidar systems include pre-installed flat mounting positions for them. Due to limitations in manufacturing precision, numerous gaps exist between the laser mounting surface and the lidar's pre-installed surface, containing air with extremely low thermal conductivity. To improve thermal conductivity, thermal pads or phase change plates are applied to the mounting surface, or silicone grease is used for heat dissipation. However, the thermal conductivity of these materials is still significantly lower than that of metals, thus limiting the laser's thermal efficiency and leading to heat buildup inside the laser. Utility Model Content

[0004] This invention provides an integrated laser housing structure with heat dissipation fins, which solves the problem of rapid heat dissipation of the laser in lidar.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an integrated laser housing structure with heat dissipation fins, including a heat dissipation shell, a convex cavity with an opening on one side inside the heat dissipation shell, one side of the opening of the convex cavity on the heat dissipation shell is used to connect with the lidar base, a laser housing is provided at the bottom of the convex cavity, a laser cover is provided at one end of the laser housing, a second cavity is provided inside the laser housing, the second cavity is used to place the laser element, and multiple heat dissipation fins are provided on the side of the heat dissipation shell away from the lidar base.

[0006] In a preferred embodiment, the height of the second cavity is lower than the depth of the external convex and concave cavity.

[0007] In a preferred embodiment, a component mounting plate is provided near the bottom of the second cavity, and a clearance groove is provided on the heat sink near the component mounting plate.

[0008] In the preferred embodiment, the second cavity sidewall is provided with a positioning step, and the laser housing also includes an upper box with one end open. The bottom end of the upper box is located at the positioning step, and the first cavity is provided inside the upper box. The laser cover seals the opening end of the first cavity.

[0009] In a preferred embodiment, the outer edge of the heat sink housing is provided with multiple through holes and multiple connecting screws, each connecting screw passing through the through holes to connect to the lidar base.

[0010] The beneficial effects of this utility model are as follows: an additional box is directly processed inside the side housing of the lidar to serve as the laser housing, and heat dissipation fins are processed on the outside. After the process is completed, the main heating element of the laser is installed in this box. Due to the seamless connection, the metal conducts heat directly, and the heat dissipation efficiency of the laser is greatly improved. The multi-chamber design is adopted, with the main heating element installed on the outside near the fins, while the inner chamber is used to install components with lower heat generation, such as the control board, so that heat can be quickly dissipated and the heat source distribution is more reasonable. 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 illustrating the application of this utility model.

[0013] Figure 2 This is a schematic diagram of the present invention.

[0014] Figure 3 This is a diagram of the internal structure of this utility model.

[0015] In the figure: LiDAR base 1; laser module 2; heat sink 201; external convex and concave cavity 202; laser housing 203; laser cover 204; heat sink fins 205; first cavity 206; second cavity 207; clearance groove 208; positioning step 209; component mounting plate 210; upper box 211; through hole 212; connecting screw 213. Detailed Implementation

[0016] like Figure 1-3 Among them, an integrated laser housing structure with heat dissipation fins includes a heat dissipation shell 201, a convex cavity 202 with an opening on one side of the heat dissipation shell 201, one side of the opening of the convex cavity 202 on the heat dissipation shell 201 is used to connect with a lidar base 1, a laser housing 203 is provided at the bottom of the convex cavity 202, a laser cover 204 is provided at one end of the laser housing 203, a second cavity 207 is provided inside the laser housing 203, the second cavity 207 is used to place laser components, and a plurality of heat dissipation fins 205 are provided on the side of the heat dissipation shell 201 away from the lidar base 1.

[0017] The lidar base 1 has a recessed cavity on one side, with a sealing groove at the cavity opening and a sealing strip inside the sealing groove. The heat sink 201 has a planar structure on one side except for the protruding recessed cavity 202. The heat sink 201 is fastened to the cavity opening and the sealing strip is pressed tightly. The structure of the laser module 2 protruding from the end face of the heat sink 201 is placed inside the recessed cavity.

[0018] Each heat dissipation fin 205 has a vertical structure and is arranged in parallel at intervals. Adjacent areas have a streamlined groove structure to facilitate airflow. The heat dissipation fins 205 in the central area of ​​the heat dissipation shell 201 are high, while those on the outer side are lower and chamfered to prevent cuts and improve aesthetics.

[0019] In a preferred embodiment, the height of the second cavity 207 is lower than the depth of the external convex and concave cavity 202.

[0020] The heat sink 201 and the laser housing 203 are made of thermally conductive metal. Since the height of the second cavity 207 is lower than the mounting side end face of the heat sink 201, it is convenient to use CNC integrated machining. In this integrated structure, there is no seam between the second cavity 207 and the heat sink 201, so the heat conduction efficiency is high.

[0021] In a preferred embodiment, the second cavity 207 is provided with a component mounting plate 210 near the bottom end, and the heat sink 201 is provided with a relief groove 208 near the component mounting plate 210.

[0022] After the second cavity 207 is processed, a clearance groove 208 is processed at the bottom. Then, the component mounting plate 210, which has been pre-made, is attached to the clearance groove 208 and connected to the heat sink 201 by welding or screws.

[0023] The component mounting plate 210 has a partially open area to serve as the mounting base for components, while the clearance groove 208 provides clearance space for components with partially cylindrical outer surfaces.

[0024] In the preferred embodiment, the second cavity 207 has a positioning step 209 on its side wall, and the laser housing 203 also includes an upper box 211 with one end open. The bottom of the upper box 211 is located at the positioning step 209. The upper box 211 has a first cavity 206 inside, and the laser cover 204 blocks the opening end of the first cavity 206.

[0025] The laser cover 204 is locked to the opening end of the first cavity 206 by a flat-head screw.

[0026] The upper housing 211 can be processed separately. A positioning step 209 is processed at the opening of the second cavity 207. After the side of the upper housing 211 with the base plate is attached to the positioning step 209, it is welded or connected to the port of the second cavity 207 by screws to form the laser housing 203.

[0027] The main heat-generating element of the laser is placed in the second cavity 207, while the first cavity 206 is used to house relatively low-heat components such as the laser's control board. Due to the obstruction of the bottom plate of the upper housing 211, the main heat is confined within the second cavity 207. Since the sidewall of the second cavity 207 and the heat sink 201 are an integral structure, the efficiency of heat transfer to the outer side where the heat sink fins 205 are located is higher than that to the inner side where the recess of the lidar base 1 is located. Therefore, the heat generated by the laser is quickly released and does not accumulate inside the lidar.

[0028] In a preferred embodiment, the heat sink 201 has multiple through holes 212 on its outer edge and multiple connecting screws 213, each of which passes through the through holes 212 to be connected to the lidar base 1.

[0029] After the heat sink 201 and the laser element are assembled into one unit, they are snapped into the cavity of the lidar base 1 and locked in place by connecting screws 213.

[0030] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. An integrated laser housing structure with heat dissipation fins, characterized in that: The device includes a heat sink (201), a convex cavity (202) with an opening on one side inside the heat sink (201), one side of the opening of the convex cavity (202) on the heat sink (201) is used to connect with the lidar base (1), a laser housing (203) is provided at the bottom of the convex cavity (202), a laser cover (204) is provided at one end of the laser housing (203), a second cavity (207) is provided inside the laser housing (203), the second cavity (207) is used to place the laser element, and multiple heat dissipation fins (205) are provided on the side of the heat sink (201) away from the lidar base (1).

2. The integrated laser housing structure with heat dissipation fins according to claim 1, characterized in that: The height of the second cavity (207) is lower than the depth of the outer convex cavity (202).

3. The integrated laser housing structure with heat dissipation fins according to claim 1, characterized in that: The second cavity (207) has a component mounting plate (210) near the bottom, and the heat sink (201) has a relief groove (208) near the component mounting plate (210).

4. The integrated laser housing structure with heat dissipation fins according to claim 1, characterized in that: The second cavity (207) has a positioning step (209) on its side wall. The laser housing (203) also includes an upper box (211) with one end open. The bottom of the upper box (211) is located at the positioning step (209). The upper box (211) has a first cavity (206) inside. The laser cover (204) blocks the opening of the first cavity (206).

5. The integrated laser housing structure with heat dissipation fins according to claim 1, characterized in that: The heat sink (201) has multiple through holes (212) on its outer edge and multiple connecting screws (213). Each connecting screw (213) passes through the through hole (212) to be connected to the lidar base (1).

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