Laser radar cooling fin and emitter cooling structure

Abstract

The utility model relates to the technical field of laser radars, and discloses a laser radar radiating fin and an emitter radiating structure, the laser radar radiating fin is made of metal materials, the laser radar radiating fin comprises a radiating fin main body, the radiating fin main body is provided with a mounting groove, the two ends of the mounting groove are communicated along the thickness direction of the laser radar radiating fin, and the radiating fin main body is provided with a plurality of radiating fins. An annular blocking table is arranged on the side wall of the mounting groove, so that the mounting groove comprises a first groove and a second groove which are located in the two sides of the annular blocking table respectively and communicate with each other, the emitter is arranged in the mounting groove in a penetrating mode and is in clearance fit with the mounting groove, and a first part of the emitter is fixed to the inner wall of the first groove through heat-conducting glue; the second part of the emitter is fixed to the inner wall of the second groove through insulation paste. The gap between the emitter and the second groove is filled with the insulation paste, the annular blocking table is used for preventing the insulation paste from overflowing into the first groove from the second groove, the insulation effect can be achieved, short circuit between the laser radar cooling fin made of metal and the emitter is avoided, and safe use of the emitter is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of lidar, in particular to a lidar heat sink and a transmitter heat dissipation structure. Background Art

[0002] When a high-power laser transmitter works, it will generate a large amount of heat. If the heat cannot be transferred in time, it will affect the normal operation of the laser transmitter. At present, the existing laser transmitter uses a metal heat sink to disperse its heat. However, due to the high thermal conductivity of the metal heat sink and the lack of a short-circuit prevention structure in the metal heat sink, the laser transmitter is easily burned out.

[0003] Therefore, there is an urgent need for a lidar heat sink and a transmitter heat dissipation structure to solve the above problems. Summary of the Utility Model

[0004] An object of the utility model is to provide a lidar heat sink, which can not only achieve rapid heat dissipation of the transmitter, but also prevent short circuit and ensure the safe use of the transmitter.

[0005] As such a concept, the technical solution adopted by the utility model is as follows:

[0006] Provide a lidar heat sink made of a metal material. The lidar heat sink includes a heat sink main body. An installation groove is provided on the heat sink main body. The installation groove penetrates through both ends in the thickness direction of the lidar heat sink. An annular retaining platform is provided on the side wall of the installation groove, so that the installation groove includes a first groove and a second groove which are respectively located on both sides of the annular retaining platform and communicate with each other. A transmitter is inserted into the installation groove and is in clearance fit with the installation groove. A first part of the transmitter is fixed to the inner wall of the first groove through a thermal conductive adhesive, and a second part of the transmitter is fixed to the inner wall of the second groove through an insulating adhesive.

[0007] Optionally, a diversion groove is provided on the annular retaining platform, and the diversion groove penetrates through both ends in the thickness direction of the lidar heat sink.

[0008] Optionally, the diversion groove is provided at the edge of the side wall of the annular retaining platform facing away from the installation groove, and the diversion groove communicates with the installation groove in a direction perpendicular to the thickness direction of the lidar heat sink.

[0009] Optionally, a plurality of diversion grooves are provided, and the plurality of diversion grooves are arranged at intervals.

[0010] Optionally, the laser radar heat sink also includes a thermally conductive boss, which is arranged on the heat sink body, and a thermally conductive groove is arranged on the thermally conductive boss, and the thermally conductive groove passes through both ends of the laser radar heat sink in the thickness direction, and the thermally conductive groove is connected to the end of the first groove away from the second groove, and the part of the transmitter penetrating into the thermally conductive groove is fixed to the inner wall of the thermally conductive groove by thermally conductive glue.

[0011] Optionally, the transmitter is located in the heat-conducting groove and does not exceed the heat-conducting groove in the thickness direction of the laser radar heat sink.

[0012] Optionally, a first groove is provided on the edge of the heat sink body, and the first groove is used for installing a temperature sensor.

[0013] Optionally, a plurality of the mounting grooves are provided on the heat sink body, and the plurality of the mounting grooves are arranged at intervals.

[0014] Optionally, the laser radar heat sink includes a plurality of the thermally conductive bosses, the plurality of the thermally conductive bosses are arranged at intervals on the heat sink body, and the thermally conductive groove of one of the thermally conductive bosses is connected to one of the mounting grooves.

[0015] Another object of the utility model is to provide a transmitter heat dissipation structure, which can not only realize rapid heat dissipation of the transmitter, but also prevent short circuit and ensure the safe use of the transmitter.

[0016] As conceived above, the technical solution adopted by the utility model is:

[0017] Provided is a transmitter heat dissipation structure, comprising a transmitter and the above-mentioned laser radar heat sink, wherein the transmitter is installed in the installation groove of the laser radar heat sink.

[0018] The beneficial effects of the utility model are:

[0019] The heat sink of the lidar proposed by the present utility model is made of a metal material. The heat sink of the lidar includes a heat sink body, and an installation groove is provided on the heat sink body. The installation groove penetrates through both ends along the thickness direction of the heat sink of the lidar. An annular retaining platform is provided on the side wall of the installation groove, so that the installation groove includes a first groove and a second groove which are respectively located on both sides of the annular retaining platform and communicate with each other. The transmitter is inserted into the installation groove and is in clearance fit with the installation groove. And when the transmitter is installed in the installation groove, the first part of the transmitter is located in the first groove, and the part located in the first groove is fixed in the first groove through a thermal conductive adhesive. The second part of the transmitter is located in the second groove, and the part located in the second groove is fixed in the second groove through an insulating adhesive. The first groove is located above the second groove. First, the insulating adhesive is injected into the second groove to fill the gap between the transmitter and the second groove, so as to achieve an insulating effect, avoid short circuit between the metal heat sink of the lidar and the transmitter, ensure the safe use of the transmitter, and the annular retaining platform is used to prevent the insulating adhesive from overflowing from the second groove into the first groove.

[0020] The transmitter heat dissipation structure proposed by the present utility model includes a transmitter and the above-mentioned heat sink of the lidar, and the transmitter is installed in the installation groove of the heat sink of the lidar. This transmitter heat dissipation structure can achieve rapid heat dissipation of the transmitter, prevent short circuit, and ensure the safe use of the transmitter. Brief Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of a heat sink of a lidar provided by an embodiment of the present utility model Figure 1 ;

[0022] Figure 2 is a schematic structural diagram of a heat sink of a lidar provided by an embodiment of the present utility model Figure 2 ;

[0023] Figure 3 is a schematic structural diagram of a heat sink of a lidar provided by an embodiment of the present utility model Figure 3 ;

[0024] Figure 4 is a cross-sectional view of a heat sink of a lidar provided by an embodiment of the present utility model;

[0025] Figure 5 is a schematic structural diagram of another heat sink of a lidar provided by an embodiment of the present utility model.

[0026] In the figure:

[0027] 1. Heat sink body; 10. First surface; 11. Installation groove; 111. First groove; 112. Second groove; 12. Annular retaining platform; 121. Diversion groove; 13. First groove; 14. Second groove;

[0028] 2. Heat conducting boss; 21. Heat conducting groove. Detailed implementation manners

[0029] To make the technical problems solved by the present utility model, the technical solutions adopted and the achieved technical effects clearer, the technical solutions of the present utility model will be further described below with reference to the drawings and through specific implementation manners. It can be understood that the specific embodiments described herein are only used to explain the present utility model and are not intended to limit the present utility model. In addition, it should be noted that for the convenience of description, only the parts related to the present utility model are shown in the drawings rather than all of them.

[0030] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0031] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0032] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "left", and "right" are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and do not have special meanings.

[0033] The technical solutions of the present utility model will be further described below with reference to the drawings and through specific implementation manners.

[0034] Such as Figures 1 to 4As shown in the figure, this embodiment provides a heat sink for a lidar, which is made of a metal material. The heat sink for the lidar includes a heat sink body 1, and an installation groove 11 is provided on the heat sink body 1. The installation groove 11 penetrates through both ends in the thickness direction of the heat sink for the lidar. An annular retaining platform 12 is provided on the side wall of the installation groove 11, that is, the installation groove 11 is divided into three parts. One part is a first groove 111 on one side of the annular retaining platform 12, another part is a second groove 112 on the other side of the annular retaining platform 12, and the third part is a third groove formed by the annular retaining platform 12 surrounding it. The depth of the third groove is the thickness of the annular retaining platform 12. In this embodiment, the thickness of the annular retaining platform 12 is small. The main function of the annular retaining platform 12 is to separate the first groove 111 and the second groove 112. This makes it so that when the transmitter is installed in the installation groove 11, the first part of the transmitter is located in the first groove 111, and the first part located in the first groove 111 is fixed to the inner wall of the first groove 111 through a thermal conductive adhesive. The second part of the transmitter is located in the second groove 112, and the second part located in the second groove 112 is fixed to the second groove 112 through an insulating adhesive. During specific implementation, the heat sink for the lidar is arranged on the housing, and the transmitter located on the housing penetrates through the installation groove 11 of the heat sink for the lidar. And the first groove 111 is above the second groove 112. Then, an insulating adhesive is injected into the second groove 112 to fill the gap between the transmitter and the second groove 112, so as to achieve an insulating effect, avoid short - circuit between the metal - made heat sink for the lidar and the transmitter, and ensure the safe use of the transmitter. The annular retaining platform 12 is used to prevent the insulating adhesive from overflowing from the second groove 112 into the first groove 111.

[0035] Optionally, a diversion groove 121 is provided on the annular retaining platform 12, and the diversion groove 121 penetrates through both ends in the thickness direction of the heat sink for the lidar. During specific implementation, the transmitter is placed in the installation groove 11 and there is a gap between the transmitter and the side wall of the installation groove 11, and this gap is filled with an insulating adhesive or a thermal conductive adhesive. Then, to facilitate injecting the insulating adhesive into the second groove 112 from one side of the first groove 111, the insulating adhesive can be injected into the diversion groove 121, and the insulating adhesive flows along the through - direction of the diversion groove 121 to enter the second groove 112 and fill the gap between the transmitter and the side wall of the second groove 112.

[0036] Optionally, the diversion groove 121 is provided at the edge of the side wall of the annular retaining platform 12 facing away from the installation groove 11, and the diversion groove 121 communicates with the installation groove 11 in the direction perpendicular to the thickness direction of the heat sink for the lidar. During specific implementation, that is, a part of the edge of the annular retaining platform 12 is recessed towards the side wall of the installation groove 11 to form the aforementioned diversion groove 121. In this way, while ensuring that the annular retaining platform 12 isolates the insulating adhesive, the gap between the transmitter and the annular retaining platform 12 is increased, which is convenient for injecting the insulating adhesive into the second groove 112.

[0037] Optionally, a plurality of guide grooves 121 are provided, and the plurality of guide grooves 121 are arranged at intervals. In this embodiment, the mounting groove 11 is a square groove, the annular stopper 12 is also a square, and the guide grooves 121 are arranged at the corners of the square annular stopper 12, and a guide groove 121 is arranged at each corner to ensure that the insulating glue can be evenly injected into each place in the second groove 112.

[0038] Furthermore, in order to improve the heat dissipation effect of the laser radar heat sink, the laser radar heat sink also includes a heat-conducting boss 2, which is arranged on the heat sink body 1, and a heat-conducting groove 21 is arranged on the heat-conducting boss 2. The heat-conducting groove 21 is penetrated at both ends along the thickness direction of the laser radar heat sink, and the position of the heat-conducting boss 2 corresponds to the position of the mounting groove 11, so that the heat-conducting groove 21 is connected to the end of the first groove 111 away from the second groove 112. The heat-conducting groove 21 is coaxially arranged with the first groove 111, and the transmitter is installed in the mounting groove 11 and is also located in the heat-conducting groove 21. The part of the transmitter that passes through the heat-conducting groove 21 is fixed to the inner wall of the heat-conducting groove 21 by a heat-conducting glue. The setting of the heat-conducting boss 2 increases the contact area between the transmitter and the laser radar heat sink, so that the heat generated by the transmitter can be quickly conducted to the surroundings. In this embodiment, the heat conducting boss 2 is arranged around the transmitter, and the height of the heat sink body 1 in the thickness direction of the laser radar heat sink is relatively small. The area of ​​the first surface 10 of the heat sink body 1 in the thickness direction perpendicular to the laser radar heat sink is relatively large. The first surface 10 is in contact with the outer shell, so that the laser radar heat sink can cache a large amount of heat, and the heat can be quickly conducted to the outer shell through the larger first surface 10, thereby realizing rapid heat dissipation of the transmitter.

[0039] Optionally, the emitter is located in the heat-conducting groove 21, and does not exceed the heat-conducting groove 21 in the thickness direction of the laser radar heat sink. That is, when the emitter is set on the laser radar heat sink, all parts of the emitter in the circumference are in contact with the laser radar heat sink through thermal conductive glue or insulating glue, and the contact surface between the laser radar heat sink and the emitter is larger, which has a better heat dissipation effect on the emitter.

[0040] Furthermore, a first groove 13 is provided at the edge of the heat sink body 1, and the first groove 13 is used to install the temperature sensor. Part of the edge of the heat sink body 1 is recessed toward the side of the mounting groove 11 to form the first groove 13, and the temperature sensor is arranged at the first groove 13, which can make the heat sink body 1 have a larger area while reducing the distance between the temperature sensor and the transmitter, thereby ensuring the accuracy of the temperature sensor detection.

[0041] like Figure 5As shown in the figure, this embodiment also provides another heat sink for lidar. Multiple mounting grooves 11 are provided on the heat sink body 1 of the heat sink for lidar, and the multiple mounting grooves 11 are arranged at intervals. Specifically, when implemented, the number of the mounting grooves 11 is determined according to the number of transmitters on the housing, so that one transmitter can be located in one mounting groove 11, and the positions of the multiple mounting grooves 11 on the heat sink body 1 are also adjusted according to the actual mounting positions of the transmitters.

[0042] Optionally, when multiple mounting grooves 11 are provided on the heat sink body 1, the heat sink for lidar further includes multiple heat conducting bosses 2. The multiple heat conducting bosses 2 are arranged at intervals on the heat sink body 1, and one heat conducting boss 2 corresponds to one mounting groove 11, so that the heat conducting groove 21 of one heat conducting boss 2 communicates with one mounting groove 11, thereby ensuring that the circumferences of each transmitter can be in contact with the heat sink body 1 through heat conducting glue or insulating glue, and ensuring the heat dissipation effect on the multiple transmitters.

[0043] Optionally, a second groove 14 is further provided at the edge of the heat sink body 1. The second groove 14 is used to avoid other power supplies or connector sockets on the housing.

[0044] This embodiment also provides a transmitter heat dissipation structure, which includes a transmitter and any one of the above heat sinks for lidar. The transmitter is installed in the mounting groove 11 of the heat sink for lidar. This transmitter heat dissipation structure can achieve rapid heat dissipation of the transmitter, prevent short circuits, and ensure the safe use of the transmitter.

[0045] The above embodiments only illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, various changes and modifications can be made to the present invention, and these changes and modifications all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. The laser radar heat sink is made of metal material, characterized in that: The laser radar heat sink comprises a heat sink body (1), a mounting groove (11) is arranged on the heat sink body (1), the mounting groove (11) is through-connected at both ends along the thickness direction of the laser radar heat sink, an annular stop (12) is arranged on the side wall of the mounting groove (11), so that the mounting groove (11) comprises a first groove (111) and a second groove (112) which are respectively located on both sides of the annular stop (12) and are connected, a transmitter is arranged in the mounting groove (11) and is loosely matched with the mounting groove (11), a first part of the transmitter is fixed to the inner wall of the first groove (111) by means of thermal conductive glue, and a second part of the transmitter is fixed to the inner wall of the second groove (112) by means of insulating glue.

2. The laser radar heat sink according to claim 1, characterized in that: A guide groove (121) is provided on the annular baffle (12), and the guide groove (121) penetrates both ends of the laser radar heat sink in the thickness direction.

3. The laser radar heat sink according to claim 2, characterized in that: The guide groove (121) is arranged at the edge of the side wall of the annular stop (12) away from the mounting groove (11), and the guide groove (121) is connected to the mounting groove (11) in a direction perpendicular to the thickness of the laser radar heat sink.

4. The laser radar heat sink according to claim 2, characterized in that: A plurality of the guide grooves (121) are provided, and the plurality of the guide grooves (121) are arranged at intervals.

5. The laser radar heat sink according to claim 2, characterized in that: The laser radar heat sink further comprises a heat-conducting boss (2), wherein the heat-conducting boss (2) is arranged on the heat sink body (1), and a heat-conducting groove (21) is arranged on the heat-conducting boss (2), and the heat-conducting groove (21) passes through both ends of the laser radar heat sink in the thickness direction, and the heat-conducting groove (21) is connected to an end of the first groove (111) away from the second groove (112), and the part of the transmitter penetrating the heat-conducting groove (21) is fixed to the inner wall of the heat-conducting groove (21) by means of a heat-conducting adhesive.

6. The laser radar heat sink according to claim 5, characterized in that: The emitter is located in the heat-conducting groove (21) and does not extend beyond the heat-conducting groove (21) in the thickness direction of the laser radar heat sink.

7. The laser radar heat sink according to claim 1, characterized in that: A first groove (13) is provided on the edge of the heat sink body (1), and the first groove (13) is used for installing a temperature sensor.

8. The laser radar heat sink according to claim 5, characterized in that: A plurality of mounting grooves (11) are arranged on the heat sink body (1), and the plurality of mounting grooves (11) are arranged at intervals.

9. The laser radar heat sink according to claim 8, characterized in that: The laser radar heat sink comprises a plurality of heat-conducting bosses (2), wherein the plurality of heat-conducting bosses (2) are arranged at intervals on the heat sink body (1), and the heat-conducting groove (21) of one of the heat-conducting bosses (2) is connected to one of the mounting grooves (11).

10. The transmitter heat dissipation structure is characterized in that: It comprises a transmitter and the laser radar heat sink according to any one of claims 1 to 9, wherein the transmitter is installed in the installation groove (11) of the laser radar heat sink.

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