阅读说明：本技术 激光雷达的散热结构 (Heat radiation structure of laser radar ) 是由 赵卫 朱香平 韦永林 杜铭轩 于 2020-12-23 设计创作，主要内容包括：本发明公开了一种激光雷达的散热结构,其包括外壳体、内壳体和散热风扇,内壳体设置在外壳体内,且两者之间具有夹层空间,激光雷达组件设置在内壳体内,外壳体上设有使夹层空间与外界空间相连通的通风孔,散热风扇设置在外壳体上,并能加快夹层空间与外界空间之间的空气流通。外壳体具有保护内壳体和进气整流的作用,激光雷达组件可以分开安装在内壳体的各个侧壁上,使得结构更加紧凑,利于体积小型化设计,激光雷达组件所产生的热量由内壳体各个侧壁导出并扩散至整个内壳体,大大加快散热效果,同时配合散热风扇加强夹层空间的空气流动来提高散热效率,散热效果好,确保激光雷达组件能够长时间正常稳定的运行,工作稳定性好,利于广泛推广应用。(The invention discloses a heat radiation structure of a laser radar, which comprises an outer shell, an inner shell and a heat radiation fan, wherein the inner shell is arranged in the outer shell, an interlayer space is arranged between the inner shell and the outer shell, a laser radar component is arranged in the inner shell, the outer shell is provided with a vent hole which enables the interlayer space to be communicated with the external space, and the heat radiation fan is arranged on the outer shell and can accelerate the air circulation between the interlayer space and the external space. The shell body has the effect of the interior casing of protection and the rectification of admitting air, the laser radar subassembly can separately be installed on each lateral wall of interior casing, make the structure compacter, do benefit to the small-size design, the produced heat of laser radar subassembly is derived and is diffused to whole interior casing by each lateral wall of interior casing, accelerate the radiating effect greatly, the air flow that the intermediate layer space was strengthened to cooperation radiator fan simultaneously improves the radiating efficiency, the radiating effect is good, ensure that the laser radar subassembly can be normal stable operation for a long time, the job stabilization nature is good, do benefit to extensive popularization and application.)

1. The utility model provides a laser radar's heat radiation structure, its characterized in that, it includes shell body, interior casing and radiator fan, interior casing sets up in the shell body, and has the intermediate layer space between the two, and laser radar subassembly sets up including the casing in, be equipped with the ventilation hole that makes intermediate layer space and external space be linked together on the shell body, radiator fan sets up on the shell body to can accelerate the circulation of air between intermediate layer space and the external space.

2. The lidar heat dissipation structure of claim 1, wherein an inner opening is formed on the top wall of the inner housing, and an inner cover plate covers the inner opening, so that a closed space is formed in the inner housing.

3. The lidar heat dissipation structure of claim 2, wherein the lidar components are separately disposed on respective inner walls of the inner housing.

4. The lidar heat dissipation structure of claim 3, wherein a thermally conductive coating is disposed between the lidar assembly and an inner wall of the inner housing.

5. The lidar heat dissipation structure according to claim 1 or 2, wherein a plurality of heat dissipation strips are distributed on the outer wall of the inner housing, and a heat dissipation groove is formed between two adjacent heat dissipation strips.

6. The lidar heat dissipation structure of claim 1, wherein the rear wall of the outer housing has an outer opening covered with an outer rear cover plate, and the heat dissipation fan is disposed on the outer rear cover plate.

7. The lidar heat dissipation structure of claim 6, wherein a boss for supporting and positioning the inner housing is provided on an inner wall of the outer housing.

8. The lidar heat dissipation structure of claim 1, wherein the vent holes are located on a front wall and a top wall of the outer housing.

9. The lidar heat dissipation structure of claim 1, wherein the vent hole is elongated.

10. The lidar heat dissipation structure of claim 1, wherein an inner transparent window is disposed on the front wall of the inner housing, and an outer transparent window aligned with the inner transparent window is disposed on the front wall of the outer housing.

Technical Field

The invention relates to the technical field of laser radars, in particular to a heat dissipation structure of a laser radar.

Background

Laser radar instruments all have certain heat dissipation demand, have certain quantity of consumption components on an instrument equipment, so the heat dissipation problem must influence the performance of instrument equipment. At present, the commonly used heat radiation structure of laser radar instrument mainly is: the bottom of the instrument is contacted with the heating device through a material with high heat conductivity coefficient, the energy of the heating device is conducted out, and the energy of the heat conduction material is conducted out through the contact of the radiating fin and air. The mode is in contact with the heating device at the bottom of the instrument, and the radiating fins are in contact with the air, so that more metal materials can be adopted, the weight and the cost of the product are increased, the structure has higher requirements on position and space, the overall shape and size of the product are limited, and the requirement on the air flowability is higher.

The existing laser radar products are large in size, and the product competitiveness can be improved only by reducing the product size under the condition of high requirements on the size. The product volume is reduced, and the internal integration level of the product must be improved. Because the number of internal power consumption components of the product is large, the increase of the internal integration level of the product inevitably causes the increase of the internal heat dissipation pressure of the product, and in order to solve the contradiction between the reduction of the volume and the heat dissipation performance, a heat dissipation structure suitable for laser radar equipment needs to be developed.

The invention discloses a laser radar heat dissipation device, which comprises a radar element, a heat dissipation base and a PCB (printed circuit board), wherein the radar element and the PCB are arranged on one surface of the heat dissipation base, and the radar element is connected with the PCB through a metal wire. It dispels the heat through the base, and this structure needs the consumption component to all place in holistic bottom, so has restricted the locating position of consumption component, has also restricted holistic appearance and size of product. And the heat dissipation mode adopts a passive heat dissipation mode to dissipate heat, and the heat dissipation is finished only after the elements are conducted to the heat dissipation base, so that the technical scheme limits the appearance size and the heat dissipation performance of the whole radar.

Disclosure of Invention

Aiming at the defects, the invention aims to provide the laser radar heat dissipation structure which is ingenious and reasonable in structural design, small in size and good in heat dissipation effect.

In order to achieve the purpose, the invention provides the technical scheme that: the utility model provides a laser radar's heat radiation structure, its includes shell body, interior casing and radiator fan, interior casing sets up in the shell body, and has the intermediate layer space between the two, and the casing has the guard action to the internal casing, and in the laser radar subassembly set up including the casing, be equipped with the ventilation hole that makes intermediate layer space and external space be linked together on the shell body, radiator fan sets up on the shell body to can accelerate the circulation of air between intermediate layer space and the external space, increase heat convection coefficient effectively reduces the heat that the laser radar subassembly produced and dwindles whole volume.

As an improvement of the invention, the top wall of the inner shell is provided with an inner opening, and an inner upper cover plate is covered on the inner opening, so that a closed space is formed in the inner shell.

As a refinement of the invention, the lidar components are arranged separately on the respective inner walls of the inner housing. Compared with the traditional structure, the heat dissipation device is not limited to being installed on the base, but is separately installed on each inner wall of the inner shell, heat conduction is carried out on each inner wall, the heat dissipation device is diffused to the whole inner shell, and the heat dissipation efficiency is effectively accelerated.

As an improvement of the invention, a heat conduction coating is arranged between the laser radar component and the inner wall of the inner shell, so that the heat conduction speed is improved.

As an improvement of the invention, a plurality of radiating strips are distributed on the outer wall of the inner shell, and a radiating groove is formed between every two adjacent radiating strips, so that the radiating strips have rectifying and guiding functions on airflow and accelerate the air flow.

As an improvement of the present invention, an outer opening is provided on the rear wall of the outer casing, an outer rear cover plate is covered on the outer opening, and the heat dissipation fan is disposed on the outer rear cover plate.

As an improvement of the invention, a boss for supporting and positioning the inner shell is arranged on the inner wall of the outer shell.

As a modification of the present invention, the ventilation holes are located on the front and top walls of the outer case. The airflow rapidly circulates from front to back to pass through the interlayer space, heat generated by the laser radar assembly is rapidly taken away, and the heat dissipation effect is good.

As an improvement of the invention, the vent hole is long-strip-shaped, so that the air inflow can be improved.

As an improvement of the invention, an inner transparent window is arranged on the front wall of the inner shell, and an outer transparent window which is aligned with the inner transparent window is arranged on the front wall of the outer shell, so that laser beams can be favorably transmitted.

The invention has the beneficial effects that: the structure design of the invention is ingenious and reasonable, the outer shell has the functions of protecting the inner shell and rectifying the intake air, the laser radar component can be separately installed on each side wall of the inner shell, so that the structure is more compact, the volume miniaturization design is facilitated, the heat generated by the laser radar component is led out from each side wall of the inner shell and is diffused to the whole inner shell, the heat dissipation effect is greatly accelerated, meanwhile, the heat dissipation efficiency is improved by matching with the air flow of the heat dissipation fan for enhancing the interlayer space, and the heat dissipation effect is good; and still be equipped with many heat dissipation rectangular on the outer wall of inner casing, effectively increase heat radiating area, further promote the radiating effect, ensure the operation that laser radar subassembly can normally be stable for a long time, job stabilization nature is good, overall structure is simple in addition, and is with low costs, easily realizes, does benefit to extensive popularization and application.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic cross-sectional structure of the present invention.

Fig. 3 is an exploded view of the present invention, schematically illustrated in fig. 1.

Fig. 4 is an exploded view of the present invention, schematically illustrated in fig. 2.

Detailed Description

Example (b): referring to fig. 1 to 4, the present embodiment provides a heat dissipation structure of a laser radar, which includes an outer housing 1, an inner housing 2, and a heat dissipation fan 3. The outer shell 1 and the inner shell 2 are both of an open mode structure. An inner opening 21 is arranged on the top surface wall of the inner shell 2, and an inner upper cover plate 22 is covered on the inner opening 21, so that a closed space is formed in the inner shell 2. The inner upper cover plate 22 is detachably mounted on the inner case 2 by screws. The rear wall of the outer shell 1 is provided with an outer opening 11, an outer rear cover plate 12 is covered on the outer opening 11, and the outer rear cover plate 12 is detachably arranged on the outer shell 1 through screws. An inner transparent window 23 is arranged on the front wall of the inner shell 2, and an outer transparent window 13 which is aligned with the inner transparent window 23 is arranged on the front wall of the outer shell 1, so that laser beams of the laser radar can penetrate through the window conveniently.

And a boss 14 for supporting and positioning the inner shell 2 is arranged on the inner wall of the outer shell 1. Interior casing 2 sets up in outer casing 1, supports the location through boss 14 to interior casing 2 for the inner wall of shell body 1 has certain distance with the outer wall of interior casing 2 and forms intermediate layer space 4, is equipped with the screw on interior casing 2, and the screw passes shell body 1 and twists the screw, realizes setting up fixedly in outer casing 1 with interior casing 2. The outer shell 1 has a protective effect on the inner shell 2, and the outer shell 1 is provided with a vent hole 15 for communicating the interlayer space 4 with the external space, wherein the vent hole 15 is preferably positioned on the front wall and the top wall of the outer shell 1. The airflow rapidly circulates from front to back to pass through the interlayer space 4, heat generated by the laser radar assembly is rapidly taken away, and the heat dissipation effect is good. The vent holes 15 are preferably long and can further improve the air inflow.

Radiator fan 3 sets up on outer casing 1 to can accelerate the circulation of air between intermediate layer space 4 and the external space, increase heat convection coefficient, effectively reduce the heat that the laser radar subassembly produced and reduce whole volume.

The laser radar unit 5 is separately provided on each inner wall of the inner case 2 through an inner opening 21. Compared with the traditional structure, the heat dissipation device is not limited to being installed on the base, but is separately installed on each inner wall of the inner shell 2, heat conduction is carried out on each inner wall, the heat is diffused to the whole inner shell 2, and the heat dissipation efficiency is effectively accelerated. Meanwhile, the structure is more compact and the size is small. Preferably, a heat conductive polymer material is coated on a predetermined position of the inner wall of the inner housing 2 where the lidar assembly 5 is to be installed to form a heat conductive coating, and then the lidar assembly 5 is installed on the predetermined position of the inner housing 2.

It has many heat dissipation rectangular strips 24 to distribute on the outer wall of interior casing 2, effectively increases heat radiating area, promotes the radiating effect, forms the radiating groove between two adjacent heat dissipation rectangular strips 24, has rectification and guide effect to the air current for the air flows. An air opening is formed in the outer rear cover plate 12, and the cooling fan 3 is installed on the air opening.

The during operation, the produced heat of 5 each parts of laser radar subassembly is derived and is diffused to whole interior casing 2 and dispel the heat by each lateral wall of interior casing 2, ventilation hole 15 advances the air and takes out the air with radiator fan 3 and make intermediate layer space 4 form the air convection exchange, be favorable to interior casing 2's heat dissipation, make the heat of this interior casing 2 effectively dispelled uniformly, the radiating rate is fast, and is effectual, ensure that laser radar subassembly 5 can be long-time normal stable operation, and the job stabilization nature is good.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. In addition, although specific terms are used herein, they are used in a generic and descriptive sense only and not for purposes of limitation, the use of the same or similar structures being contemplated as within the scope of the invention.