Underwater sound communication machine and underwater equipment

Abstract

The utility model provides an underwater sound communication machine and underwater equipment, and relates to the technical field of underwater sound communication machines. The underwater sound communication machine comprises a shell assembly and a circuit board, a cavity is formed in the shell assembly, and a heat-conducting medium is contained in the cavity; the shell assembly is provided with a cavity, the circuit board is arranged in the cavity and connected with the shell assembly, the heat-conducting medium makes contact with the circuit board, and the heat-conducting medium is used for conducting heat generated by the circuit board to the shell assembly and then conducting the heat to water through the shell assembly. According to the underwater sound communication machine provided by the utility model, the heat-conducting medium is injected into the shell assembly, the heat-conducting medium is in contact with the circuit board, the contact area between the heat-conducting medium and the circuit board is larger, the heat-conducting medium has excellent heat conductivity and chemical stability, and the heat-conducting medium can conduct heat generated in the working process of the circuit board to the shell assembly; and the heat is conducted into the water through the shell assembly, so that the heat dissipation efficiency is effectively improved, and the underwater sound communication machine can work normally.

Description

Technical Field

[0001] This utility model relates to the field of underwater acoustic communication technology, and in particular to an underwater acoustic communication device and underwater equipment. Background Technology

[0002] The use of underwater sonic communication devices is inseparable from a sealed chamber. The overall structure of the chamber ensures its airtightness and pressure resistance. The deep-water environment places high demands on the pressure resistance of the sonic communication device's sealed chamber. It is necessary to minimize the weight and volume while ensuring pressure resistance, so as to achieve miniaturization.

[0003] Typically, low-power underwater acoustic communication devices use metal heat sinks that contact heat dissipation chips or electronic components coated with thermal grease. Heat is conducted through the air inside the hull to the tube, and then the tube conducts heat to the water for dissipation. However, this heat dissipation method is inefficient and cannot meet the requirements of high-power underwater acoustic communication devices. Utility Model Content

[0004] This invention provides an underwater acoustic communication device to solve the problem of low heat dissipation efficiency in existing underwater acoustic communication devices.

[0005] This utility model provides an underwater acoustic communication device, comprising:

[0006] A housing assembly having an internal cavity containing a heat-conducting medium;

[0007] A circuit board is disposed within the cavity and connected to the housing assembly. A thermally conductive medium is in contact with the circuit board and is used to conduct the heat generated by the circuit board to the housing assembly, and then conduct the heat to the water through the housing assembly.

[0008] According to the present invention, an underwater acoustic communication device is provided, the housing assembly comprising:

[0009] The housing body has a cavity located inside it, and both ends of the housing body have openings communicating with the cavity.

[0010] Two end caps are provided at the two openings in a corresponding manner, and the openings are sealed.

[0011] According to the present invention, an underwater acoustic communication device is provided in which the end cap is sealed to the inner wall of the opening by a first sealing ring.

[0012] According to the present invention, an underwater acoustic communication device is provided with a plurality of mounting holes on the side wall of the housing body, and fasteners connected to the end cap are provided in the mounting holes, the fasteners being used to fix the end cap.

[0013] According to the present invention, at least one end cap is provided with a through hole communicating with the cavity, and a liquid inlet plug is provided in the through hole, the liquid inlet plug being sealed to the through hole.

[0014] According to the underwater acoustic communication device provided by this utility model, it also includes:

[0015] The mounting bracket is disposed within the cavity, the circuit board is disposed on at least one side of the mounting bracket, and the end of the mounting bracket away from the circuit board is connected to the housing body or the end cover.

[0016] According to the present invention, the underwater acoustic communication device is provided in which the mounting bracket is made of metal.

[0017] According to the present invention, there is a gap between the mounting bracket and the circuit board in an underwater acoustic communication device.

[0018] According to the present invention, at least one of the inner wall and the outer wall of the housing body is provided with a heat dissipation mechanism, which is used to increase the contact area between the housing body and the heat-conducting medium, or to increase the contact area between the housing body and water.

[0019] This utility model also provides an underwater device, including the underwater acoustic communication device described in any of the above claims.

[0020] The underwater acoustic transmitter provided by this utility model injects a heat-conducting medium into the inside of the housing assembly. The heat-conducting medium comes into contact with the circuit board, and the two have a larger contact area. The heat-conducting medium has excellent thermal conductivity and chemical stability. The heat-conducting medium can conduct the heat generated during the operation of the circuit board to the housing assembly, and then conduct the heat to the water through the housing assembly, which effectively improves the heat dissipation efficiency and ensures that the underwater acoustic transmitter can work normally. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional structural diagram of the underwater acoustic communication device provided by this utility model.

[0023] Figure 2 This is a top view of the underwater acoustic communication device provided by this utility model.

[0024] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure along section line AA.

[0025] Figure label:

[0026] 100 Circuit board; 200 Housing assembly; 210 Housing body; 220 End cap; 230 First sealing ring; 240 Mounting hole; 250 Liquid inlet plug; 260 Mounting bracket; 270 Watertight head protection ring; 280 Watertight head. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0030] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0032] The following combination Figure 1-Figure 3 This invention describes the specific structure and working principle of the underwater acoustic communication device.

[0033] like Figures 1 to 3 As shown, the underwater acoustic communication device includes a housing assembly 200 and a circuit board 100. The housing assembly 200 has an internal cavity containing a heat-conducting medium. The housing assembly 200 is a sealed housing with excellent sealing performance and high pressure resistance, thus providing protection for the internal circuit board 100. The circuit board 100 is disposed within the cavity and connected to the housing assembly 200. The heat-conducting medium is in contact with the circuit board 100 and conducts the heat generated by the circuit board 100 to the housing assembly 200, and then the housing assembly 200 conducts the heat into the water.

[0034] The underwater acoustic transmitter provided by this utility model injects a heat-conducting medium into the interior of the housing assembly 200. The heat-conducting medium comes into contact with the circuit board 100, and the two have a larger contact area. The heat-conducting medium has excellent thermal conductivity and chemical stability. The heat-conducting medium can conduct the heat generated by the circuit board 100 during operation to the housing assembly 200, and then conduct the heat to the water through the housing assembly 200, which effectively improves the heat dissipation efficiency and ensures that the underwater acoustic transmitter can work normally.

[0035] It should be noted that the water in this application can be seawater or lake water, depending on the working scenario of the underwater acoustic communication device.

[0036] In one embodiment of this utility model, the heat-conducting medium is a fluorinated liquid. Fluorinated liquids have the following advantages: 1. Fluorinated liquids have extremely high electrical insulation properties, making them suitable as coolants and dielectric fluids for electrical equipment. 2. Fluorinated liquids have high thermal conductivity, effectively conducting heat and are widely used in systems requiring efficient heat dissipation. 3. Fluorinated liquids exhibit high stability in chemical reactions, are not easily reacted with other substances, and are suitable for cleaning and cooling in various sensitive environments. 4. Fluorinated liquids are non-flammable and have no flash point or ignition point, thus performing excellently in applications requiring high safety. Of course, the specific type of heat-conducting medium is not limited to this; it can also be hydrofluoroether (HFE), perfluoropolyether (PFPE), perfluoroolefin, hexafluoropropyltrifluoroethyl ether (HFE449), or octafluoropentyltetrafluoroethyl ether (HFE6512).

[0037] In one embodiment of this utility model, the housing assembly 200 includes a housing body 210 and two end caps 220. A cavity is located inside the housing body 210, and both ends of the housing body 210 have openings communicating with the cavity. In this embodiment, the housing body 210 has a tubular structure, and the outer diameters at both ends of the housing body 210 are equal. The two end caps 220 are correspondingly disposed at the two openings and seal the openings. The end caps 220 are sealed to the housing body 210, thereby forming a sealed cavity inside the housing body 210.

[0038] In a preferred embodiment of this utility model, the housing body 210 is made of metal. Using metal for the housing body 210 not only improves the structural strength of the housing body 210, ensuring that the housing body 210 has sufficient strength and rigidity to withstand underwater pressure, especially when working at greater depths; it also improves the thermal conductivity of the housing body 210, as metal has good thermal conductivity and can quickly transfer the heat generated by the circuit board 100 to seawater or lake water; at the same time, the metal housing body 210 also has good corrosion resistance. Due to the corrosiveness of the underwater environment, the good corrosion resistance of the metal housing body 210 can ensure the high reliability of the underwater acoustic communication device.

[0039] In a preferred embodiment of this invention, the end cap 220 is also made of metal, thus possessing good structural strength, pressure resistance, and corrosion resistance. Preferably, the housing body 210 and the end cap 220 are made of aluminum alloy. However, the materials of the housing body 210 and the end cap 220 are not limited to this; the specific materials will be determined based on optimal experimental results. Using a metal end cap 220 increases the heat conduction path, allowing heat to be transferred outward not only through the housing body 210 but also through the end cap 220, increasing the heat conduction area of ​​the housing assembly 200 and further improving its heat dissipation efficiency.

[0040] In one embodiment of this utility model, the end cap 220 is sealed to the inner wall of the opening by a first sealing ring 230. Specifically, a first positioning groove is provided on the outer peripheral surface of the end cap 220, and the first sealing ring 230 is partially embedded in the first positioning groove. The first sealing ring 230 is pressed by the inner wall of the opening, and fits against both the end cap 220 and the inner wall of the opening, thereby achieving a sealing fit between the end cap 220 and the inner wall of the opening. Alternatively, a first positioning groove is provided on the inner wall of the opening, and the first sealing ring 230 is partially embedded in the first positioning groove. The first sealing ring 230 is pressed by the end cap 220, and fits against both the end cap 220 and the inner wall of the opening, thereby achieving a sealing fit between the end cap 220 and the inner wall of the opening. Preferably, the first sealing ring 230 is an O-ring.

[0041] In one embodiment of this utility model, the sidewall of the housing body 210 is provided with a plurality of mounting holes 240. These mounting holes 240 are located at both ends of the housing body 210 and are arranged circumferentially at intervals, with equal distances between adjacent mounting holes 240. Each mounting hole 240 is a through hole, and a fastener is disposed within it for securing the end cap 220. The outer circumferential surface of the end cap 220 is provided with positioning holes, the positions of which correspond one-to-one with the positions of the mounting holes 240. Fasteners are inserted into these positioning holes. Preferably, the fasteners are screws.

[0042] In one embodiment of this utility model, at least one end cap 220 is provided with a through hole communicating with the cavity. The through hole is a circular hole used to inject a heat-conducting medium into the cavity or to discharge the heat-conducting medium from the cavity. An inlet plug 250 is provided inside the through hole, and the inlet plug 250 is sealed to the through hole. When the inlet plug 250 is opened, the cavity is connected to the outside through the through hole. A container can be used to inject the heat-conducting medium into the cavity through the through hole. After a certain amount of heat-conducting medium is reached, the injection of heat-conducting medium is stopped, and the inlet plug 250 is installed inside the through hole to seal the through hole and prevent leakage of the heat-conducting medium.

[0043] In a preferred embodiment of this utility model, the outer peripheral surface of the inlet plug 250 is provided with an external thread, and the inner wall of the through hole is provided with an internal thread, with the inlet plug 250 engaging with the threaded inner wall of the through hole. Of course, the assembly method of the inlet plug 250 and the through hole is not limited to this; a snap-fit ​​connection, flange connection, or other methods can also be used for connection.

[0044] In a preferred embodiment of this utility model, the inlet plug 250 and the through hole are sealed together by a second sealing ring (not shown). Specifically, as shown... Figure 3 As shown, the inner wall of the through hole has an annular sealing surface, and the outer circumferential surface of the inlet plug 250 is provided with a second positioning groove. The position of the second positioning groove corresponds to the position of the annular sealing surface. The second sealing ring is partially embedded in the second positioning groove. The second sealing ring is squeezed by the inner wall of the through hole and fits against both the annular sealing surface and the inlet plug 250, thereby achieving a sealing fit between the inlet plug 250 and the inner wall of the through hole. Alternatively, the outer circumferential surface of the inlet plug 250 has an annular sealing surface, and the inner wall of the through hole is provided with a second positioning groove. The position of the second positioning groove corresponds to the position of the annular sealing surface, and the second sealing ring is partially embedded in the second positioning groove. The second sealing ring is squeezed by the annular sealing surface and fits against both the annular sealing surface and the inner wall of the through hole, thereby achieving a sealing fit between the inlet plug 250 and the inner wall of the through hole.

[0045] In one embodiment of the present invention, the underwater acoustic communication device further includes a mounting bracket 260, which is disposed in a cavity. The circuit board 100 is disposed on at least one side of the mounting bracket 260. The mounting bracket 260 is used to provide a mounting base for the circuit board 100 and fix the circuit board 100 in the cavity. The end of the mounting bracket 260 away from the circuit board 100 is connected to the housing body 210 or the end cover 220.

[0046] Specifically, the mounting bracket 260 is L-shaped, and the end of the mounting bracket 260 away from the circuit board 100 has a connecting part. The connecting part is perpendicular to the mounting bracket 260, and the connecting part is connected to an end cap 220 by screws, thereby fixing the mounting bracket 260 to the end cap 220. Of course, the connection method between the connecting part and the end cap 220 is not limited to this, and can also be integrally molded or other connection methods.

[0047] In another embodiment of this utility model, the mounting bracket 260 is connected to the housing body 210, which can be done by screws or by snap-fit. Compared to connecting the mounting bracket 260 to the housing body 210, connecting the mounting bracket 260 to the end cap 220 facilitates the installation and removal of the circuit board 100, shortens the installation and removal time of the underwater acoustic communication device, and improves assembly efficiency. When the end cap 220 is removed, the mounting bracket 260 and the circuit board 100 can be removed together with the end cap 220 without the need to remove the mounting bracket 260 separately. When installing the end cap 220, it is only necessary to insert the mounting bracket 260 and the circuit board 100 into the cavity, install the end cap 220 in the opening, and then use fasteners to fix the end cap 220, thus fixing the mounting bracket 260 and the circuit board 100 without the need to install the mounting bracket 260 separately.

[0048] In one embodiment of this utility model, the mounting bracket 260 is made of metal. Using metal to mount the bracket 260 can not only enhance the structural strength of the mounting bracket 260, thereby improving the stability of the circuit board 100, but also conduct some heat to the end cover 220, and then conduct the heat to the seawater or lake water through the end cover 220.

[0049] Preferably, a metal pad (not shown) is provided between the circuit board 100 and the mounting bracket 260. One side of the metal pad contacts a position on the circuit board 100 where no electronic components are located, and the other side of the metal pad contacts the mounting bracket 260. The metal pad ensures good contact between the circuit board 100 and the mounting bracket 260, thereby conducting as much heat from the circuit board 100 as possible to the end cap 220 through the mounting bracket 260, further improving the heat dissipation efficiency of the underwater acoustic communication device.

[0050] In another embodiment of this utility model, there is a gap between the mounting bracket 260 and the circuit board 100. According to the heat conduction calculation formula, under the premise of a constant temperature difference and thermal conductivity of the medium, the heat dissipation performance of the circuit board 100 is related to the size of the area perpendicular to the heat transfer direction; that is, the larger the heat dissipation area, the better the heat dissipation effect, and vice versa. By leaving a gap between the mounting bracket 260 and the circuit board 100, the heat-conducting medium can enter the gap and contact the circuit board 100, increasing the contact area between the heat-conducting medium and the circuit board 100. After heat exchange with the circuit board 100, the heat-conducting medium begins to flow to other areas, thereby conducting heat to other areas. The lower-temperature heat-conducting medium in other areas then enters the gap and exchanges heat with the circuit board 100. Through continuous circulation, the heat on the circuit board 100 can be continuously conducted to the housing assembly 200, further improving the heat dissipation efficiency of the underwater acoustic communication device.

[0051] In one embodiment of this utility model, at least one of the inner and outer walls of the housing body 210 is provided with a heat dissipation mechanism (not shown). The heat dissipation mechanism is used to increase the contact area between the housing body 210 and the heat-conducting medium, or to increase the contact area between the housing body 210 and water. Specifically, both the inner and outer walls of the housing body 210 are provided with heat dissipation mechanisms, which are fins or ridges. Providing fins or ridges on the inner wall of the housing body 210 increases the contact area between the housing body 210 and the heat-conducting medium, thereby transferring more heat from the heat-conducting medium to the housing body 210, and then transferring the heat to the water through the housing assembly 200. Providing fins or ridges on the outer wall of the housing body 210 increases the contact area between the housing body 210 and the water, improving the heat transfer efficiency between the housing body 210 and the water. Of course, the specific structural form of the heat dissipation mechanism is not limited to fins or ridges; other heat dissipation mechanisms are also possible.

[0052] In one embodiment of this invention, a waterproof motor and a small propeller (not shown) are installed inside the cavity. The motor shaft is connected to the small propeller, and the motor is electrically connected to a circuit board 100. The circuit board 100 supplies power to the motor, driving the small propeller to rotate. Since one way heat is transferred by the heat-conducting medium is through convection, the density of the heat-conducting medium near the circuit board 100 changes after being heated. This portion of the heat-conducting medium will then convect with the heat-conducting medium away from the circuit board 100, thereby transferring heat to areas away from the circuit board 100. However, because there are "dead water zones" or "stagnant zones" within the cavity, it is difficult for the heat-conducting medium in these areas to exchange heat with the circuit board 100, which affects the heat transfer efficiency of the heat-conducting medium and consequently the heat dissipation efficiency of the underwater acoustic communication device. By installing a small propeller inside the cavity, the rotation of the small propeller drives the heat-conducting medium to flow within the cavity, promoting convection between the heat-conducting medium in different areas, thereby improving the heat transfer efficiency of the heat-conducting medium. Preferably, the motor and the small propeller are mounted on the circuit board 100. This allows more heat-conducting medium near the circuit board 100 to be transported to areas away from the circuit board 100 for heat exchange while maintaining the same power consumption, thereby further improving the heat transfer efficiency of the heat-conducting medium.

[0053] In one embodiment of this utility model, the underwater acoustic communication device further includes a watertight head 280, which passes through and seals against the end cap 220. The watertight head 280 is electrically connected to the circuit board 100, and the circuit board 100 is electrically connected to external devices through the watertight head 280 and a cable. In this embodiment, both end caps 220 are provided with watertight heads 280; however, it is also possible to provide a watertight head 280 on only one end cap 220.

[0054] Preferably, a watertight head protection ring 270 is provided on the side of the end cap 220 opposite to the housing body 210, and the watertight head protection ring 270 surrounds the outer periphery of the watertight head 280. The height of the watertight head protection ring 270 is greater than the height of the watertight head 280, so that external objects cannot come into contact with the watertight head 280, thus protecting the watertight head 280. Specifically, the height of the watertight head 280 is one-third of the height of the watertight head protection ring 270. Of course, the height of the watertight head 280 can also be one-half, one-quarter, or other proportional relationships.

[0055] The watertight head protection ring 270 is connected to the end cap 220 via a fifth fastener (not shown). Specifically, the fifth fastener is a hexagon socket head cap screw, preferably made of stainless steel. The end cap 220 has multiple blind holes with threads on the inner walls of the blind holes, and the hexagon socket head cap screw is threaded into the blind holes. Of course, the fifth fastener can also be a rivet, a flathead screw, or other types of fasteners.

[0056] The underwater acoustic transmitter provided by this utility model injects a heat-conducting medium into the interior of the housing assembly 200. The heat-conducting medium comes into contact with the circuit board 100, and the two have a larger contact area. The heat-conducting medium has excellent thermal conductivity and chemical stability. The heat-conducting medium can conduct the heat generated by the circuit board 100 during operation to the housing assembly 200, and then conduct the heat to the water through the housing assembly 200, which effectively improves the heat dissipation efficiency and ensures that the underwater acoustic transmitter can work normally.

[0057] This utility model also provides an underwater device, which includes the underwater acoustic communication device described in any of the above embodiments.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An underwater acoustic communication device, characterized in that, include: A housing assembly (200) having an interior cavity containing a heat-conducting medium; A circuit board (100) is disposed in the cavity and connected to the housing assembly (200). The heat-conducting medium is in contact with the circuit board (100) and is used to conduct the heat generated by the circuit board (100) to the housing assembly (200), and then conduct the heat to the water through the housing assembly (200).

2. The underwater acoustic communication device according to claim 1, characterized in that, The housing assembly (200) includes: The housing body (210) has a cavity located inside the housing body (210) and openings at both ends of the housing body (210) communicating with the cavity; Two end caps (220) are provided in a corresponding manner at the two openings and seal the openings.

3. The underwater acoustic communication device according to claim 2, characterized in that, The end cap (220) is sealed to the inner wall of the opening by a first sealing ring (230).

4. The underwater acoustic communication device according to claim 2, characterized in that, The side wall of the housing body (210) is provided with a plurality of mounting holes (240), and fasteners connected to the end cap (220) are provided in the mounting holes (240) for fixing the end cap (220).

5. The underwater acoustic communication device according to any one of claims 2 to 4, characterized in that, At least one of the end caps (220) is provided with a through hole communicating with the cavity, and an inlet plug (250) is provided in the through hole, the inlet plug (250) being sealed to the through hole.

6. The underwater acoustic communication device according to any one of claims 2 to 4, characterized in that, Also includes: Mounting bracket (260) is disposed in the cavity, and circuit board (100) is disposed on at least one side of mounting bracket (260). The end of mounting bracket (260) away from circuit board (100) is connected to housing body (210) or end cap (220).

7. The underwater acoustic communication device according to claim 6, characterized in that, The mounting bracket (260) is made of metal.

8. The underwater acoustic communication device according to claim 6, characterized in that, There is a gap between the mounting bracket (260) and the circuit board (100).

9. The underwater acoustic communication device according to claim 6, characterized in that, At least one of the inner wall and outer wall of the housing body (210) is provided with a heat dissipation mechanism, which is used to increase the contact area between the housing body (210) and the heat-conducting medium, or to increase the contact area between the housing body (210) and water.

10. An underwater device, characterized in that, Includes the underwater acoustic communication device as described in any one of claims 1 to 9.

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