WO2022253104A1

WO2022253104A1 - Sound production device

Info

Publication number: WO2022253104A1
Application number: PCT/CN2022/095305
Authority: WO
Inventors: 王宇; 张志峰
Original assignee: 歌尔股份有限公司
Priority date: 2021-05-31
Filing date: 2022-05-26
Publication date: 2022-12-08
Also published as: CN113596637A; CN113596637B

Abstract

The present invention discloses a sound production device, comprising: a housing, a speaker module, a pressure guide part, a heat dissipation part, and a diaphragm. The speaker module is disposed in the housing; the speaker module comprises a module casing and a speaker unit; the module casing is provided with the pressure guide part extending in a direction away from the installation space; the pressure guide part is communicated with the installation space, and a pressure guide hole is provided at the end of the pressure guide part away from the installation space; the heat dissipation part is disposed on the module casing; the heat dissipation part is provided with a heating device; a through hole is provided at the position on the heat dissipation part aligned with the pressure guide hole; the diaphragm is disposed at the opening of the pressure guide part and blocks the pressure guide hole; the diaphragm and the through hole are aligned with each other; and when the speaker unit works, the diaphragm is driven to vibrate to drive the airflow in an installation cavity. The sound production device of the present invention has a simple and compact structure. The pressure guide part is disposed on the module casing, and the pressure guide part guides the air pressure in the module casing to concentrate on the diaphragm, such that the diaphragm can be driven to vibrate up and down, and the heat dissipation efficiency of the heat dissipation part can be improved.

Description

Sound device

technical field

The invention relates to the field of electroacoustic equipment, in particular to a sound generating device.

Background technique

With the development of science and technology, people have higher and higher requirements for the performance of sound generating devices in electronic equipment, and the sound generating devices are gradually developing towards high integration, high volume, high bass and other directions. However, during the working process of the sound generating device, its chip will generate a large amount of heat. If the chip is not effectively dissipated, the normal operation of the chip will be affected, and then the use effect of the sound generating device will be affected.

In the related art, an audio device is proposed. The cabinet of the audio device is provided with a passive diaphragm, and the outer side of the cabinet is provided with a heat sink opposite to the passive diaphragm. The audio chip and the heat sink are integrated together. When the audio device is working, the speaker module works to drive the air pressure in the box to act on the passive diaphragm, and the passive diaphragm vibrates to drive the airflow to blow to the heat sink, thereby achieving the purpose of cooling the chip. However, the structural design of the audio device in the above-mentioned technical solution is relatively complicated, and, due to the large volume of the box body, the air pressure driven by the speaker module is small when the speaker module is working, and the airflow velocity generated by the vibration of the passive diaphragm is relatively slow. The heat dissipation effect produced by the heat sink is poor and cannot meet the heat dissipation requirements of the chip.

Contents of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the present invention proposes a sound generating device, which has the advantages of simple structural design and good heat dissipation effect.

The sound generating device according to an embodiment of the present invention includes: a casing, an installation chamber is defined in the casing; a speaker module, the speaker module is arranged in the installation chamber, and the speaker module includes a module casing and a loudspeaker unit, the loudspeaker unit is arranged in the installation space defined by the module casing, and the module casing is provided with a pressure guiding member extending away from the installation space, and the pressure guiding member and The installation space is connected and the end of the pressure guiding member away from the installation space is provided with a pressure guiding hole; a heat sink, the heat sink is arranged on the module shell, and a heating device is provided on the heat sink, An avoidance hole is provided at the position where the heat dissipation element is directly opposite to the pressure guiding hole; The escaping hole is arranged opposite to each other, and when the loudspeaker is in operation, the vibrating membrane is driven to vibrate to drive the air flow in the installation chamber.

According to the sound generating device of the embodiment of the present invention, the pressure guide is provided on the module casing, and the pressure guide can guide the air pressure in the module casing to concentrate on the diaphragm when the speaker module is working, thereby driving the diaphragm to vibrate up and down. The air flow speed in the installation chamber can be accelerated, thereby improving the heat dissipation efficiency of the heat sink, and ensuring the normal operation of the sound generating device. Moreover, the structural design of the sound generating device in the present invention is more reasonable, compact and practical.

According to some embodiments of the present invention, the inner peripheral wall of the module housing is provided with a guide surface, and along the flow direction of the air pressure, the guide surface extends obliquely toward a direction close to the pressure guiding member.

In some embodiments of the present invention, the guide surface extends along the circumferential direction of the pressure guiding member and forms a closed ring.

According to some embodiments of the present invention, along the flow direction of the air pressure, the cross-sectional area of the pressure guiding member decreases gradually.

According to some embodiments of the present invention, the heat dissipation element is provided with a plurality of protrudingly disposed heat dissipation protrusions.

According to some embodiments of the present invention, an installation step is provided at the end of the pressure guiding member away from the installation space, and the outer periphery of the vibrating membrane is arranged in the installation step.

According to some embodiments of the present invention, the sound generating device further includes: a support member, the support member is arranged on the outer peripheral wall of the module housing, and the two ends of the support member are respectively connected to the heat sink and the The module case is connected.

In some embodiments of the present invention, the outer periphery of the vibrating membrane is sandwiched between the pressure guiding element and the heat dissipation element.

According to some embodiments of the present invention, the vibrating membrane is a thermally conductive rubber membrane.

According to some embodiments of the present invention, the vibrating membrane includes a body part and a weight part, the body part is a heat-conducting rubber material part, an installation hole is provided at the center of the body part, and the weight part is arranged on the the mounting holes described above.

In some embodiments of the present invention, the weight portion is a piece of metal material, and the weight portion is provided with a plurality of protruding convex hull structures.

According to some embodiments of the present invention, the casing is provided with a plurality of cooling holes communicating with the installation chamber.

In some embodiments of the present invention, the housing includes a first housing and a second housing that cooperate with each other, the first housing includes a top wall and a side wall, and the top wall is positively aligned with the heat sink. For setting, the side wall is connected to the second housing, the top wall includes a first area facing the heat sink and a second area located at both ends of the first area, and the second area is provided with There are the heat dissipation holes.

In some embodiments of the present invention, a plurality of evenly distributed heat dissipation holes are provided on the outer peripheral wall of the second housing.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and comprehensible from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is a schematic diagram of the explosive structure of a sounding device according to an embodiment of the present invention;

Fig. 2 is a vertical sectional view of a sound generating device according to a first embodiment of the present invention;

Fig. 3 is a partially enlarged view of the part circled by A in Fig. 2;

4 is a vertical sectional view of a sound generating device according to a second embodiment of the present invention;

5 is a vertical sectional view of a vibrating membrane according to a first embodiment of the present invention;

Fig. 6 is a vertical sectional view of a diaphragm according to a second embodiment of the present invention.

Reference signs:

Sounding device 100,

Housing 1, installation chamber 1a, cooling hole 1b, first housing 11, top wall 111, first area 111a, second area 111b, side wall 112, second housing 12,

Speaker module 2, module housing 21, guide surface 21a, speaker unit 22, installation space 2a,

Pressure guide 3, pressure guide hole 3a, installation step 31,

Radiating element 4, escape hole 4a, heat dissipation convex hull 41,

heating device 5,

vibrating membrane 6, body part 61, counterweight part 62, convex hull structure 621,

Support 7.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

The following describes a sound generating device 100 according to an embodiment of the present invention with reference to FIGS. 1-6 . The sound generating device 100 may be a sound.

As shown in FIG. 1 , FIG. 2 and FIG. 4 , the sound generating device 100 according to the embodiment of the present invention includes: a casing 1 , a speaker module 2 , a pressure guide 3 , a heat sink 4 and a vibrating membrane 6 .

Wherein, an installation chamber 1a may be defined in the casing 1, and the speaker module 2, the pressure guiding member 3, the cooling member 4 and the vibrating membrane 6 are all arranged in the installation space 2a. Loudspeaker module 2 can comprise module housing 21 and loudspeaker unit 22, and loudspeaker unit 22 is arranged in the installation space 2a that module housing 21 limits, and module housing 21 is provided with the direction away from installation space 2a (as shown in Figure 2 As shown in the upwardly extending pressure guiding member 3, the pressure guiding member 3 is hollow and communicated with the installation space 2a, and the end of the pressure guiding member 3 away from the installation space 2a is provided with a pressure guiding hole 3a.

As shown in Fig. 2 and Fig. 4, the cooling element 4 can be arranged on the module casing 21, the heating device 5 can be arranged on the cooling element 4, and the avoidance hole 4a is provided at the position facing the cooling element 4 and the pressure guiding hole 3a. When the sound generating device 100 is working, the heating device 5 generates heat, and the heat generated by the heating device 5 can be transferred to the heat sink 4 . Optionally, the heat generating device 5 may be a chip or a circuit board of the sound generating device 100, and the heat sink 4 may be a thermally conductive metal plate manufactured by die-casting, aluminum extrusion, stamping and other processes.

As shown in Figure 2, the vibrating membrane 6 can be arranged at the outlet of the pressure guiding member 3 and block the pressure guiding hole 3a, the vibrating membrane 6 is arranged opposite to the escape hole 4a, and the speaker unit 22 can drive the vibrating membrane 6 to vibrate to The air flow in the mounting chamber 1a is driven. Specifically, when the sound generating device 100 works, the vibrating membrane of the speaker unit 22 vibrates up and down, which can cause the spatial air pressure in the module housing 21 to change. 1a is much smaller, so when the air pressure in the installation space 2a changes, the air pressure in the installation space 2a will concentrate on the vibrating membrane 6 at the outlet of the pressure guiding member 3, and the vibrating membrane 6 will expand with the operation of the speaker unit 22. By vibrating up and down, the air in the installation chamber 1a can be driven to flow. Since the heat sink 4 is located in the installation chamber 1a, the heat generated by the heating device 5 is transferred to the heat sink 4, and the air flows while effectively dissipating heat from the heat sink 4, thereby speeding up the heat dissipation efficiency of the heat sink 4, and furthermore Ensure the normal operation of the heating device 5 .

Optionally, the pressure guiding member 3 and the module housing 21 may be formed as an integral molding, for example, the pressure guiding member 3 and the module housing 21 may be formed as an integral injection molding. Certainly, the pressure guiding part 3 and the module casing 21 can also be formed as separate parts, and the pressure guiding part 3 can be assembled with the module casing 21 by welding or gluing. The present application does not make specific limitations on the structural configuration of the pressure guiding member 3 .

According to the sound generating device 100 of the embodiment of the present invention, the pressure guiding member 3 is provided on the module housing 21, and the pressure guiding member 3 can guide the air pressure in the module housing 21 to concentrate on the vibrating membrane 6 when the speaker module 2 is working, thereby The vibrating membrane 6 can be driven to vibrate up and down, the air flow speed in the installation chamber 1 a can be accelerated, and the heat dissipation efficiency of the heat sink 4 can be improved to ensure the normal operation of the sound generating device 100 . Moreover, the structural design of the sound generating device 100 in the present invention is more reasonable, compact and practical.

As shown in FIGS. 2-3 , according to some embodiments of the present invention, the inner peripheral wall of the module housing 21 may be provided with a guide surface 21a, and along the flow direction of the air pressure, the guide surface 21a extends obliquely towards the direction close to the pressure guide member 3 , the guide surface 21a can guide the air pressure, so that when the air pressure in the module casing 21 changes, the air pressure can quickly act on the vibrating membrane 6, thereby not only increasing the corresponding speed of the vibrating membrane 6, but also The vibration frequency of the vibrating membrane 6 can be accelerated, thereby improving the heat dissipation efficiency of the heat sink 4 .

In some embodiments of the present invention, the guide surface 21a may extend along the circumferential direction of the pressure guiding member 3 and form a closed ring, thereby guiding the air pressure around the pressure guiding member 3 to flow into the pressure guiding member 3 at the same time, improving vibration The vibration frequency of the membrane 6. Of course, it can be understood that the arrangement form of the guide surface 21a is not limited to this. For example, the guide surface 21a can also be arranged as a plurality of discontinuous planes, and the plurality of planes extend obliquely towards the direction close to the inner cavity of the pressure guiding member 3 , thereby also having a good pressure guiding effect.

As shown in FIGS. 2-3 , in some embodiments of the present invention, the cross-sectional area of the pressure guiding member 3 decreases gradually along the flow direction of air pressure (from bottom to top as shown in FIG. 2 ). Thus, during the flow of the air pressure, since the cross-sectional area of the pressure guiding member 3 gradually decreases, the pressure on the air pressure gradually increases, so that the flow rate of the air pressure can be increased, and the vibration frequency of the vibrating membrane 6 can be accelerated, and the The heat dissipation efficiency of the heat sink 4. Of course, the pressure guiding member 3 is not limited to the above structure. For example, as shown in FIG. 4 , the pressure guiding member 3 can also be formed into a cylindrical structure.

As shown in Figures 1 and 3, according to some embodiments of the present invention, a plurality of protruding heat dissipation bumps 41 may be provided on the heat sink 4, thereby increasing the contact area between the heat sink 4 and the air flow, thereby The heat dissipation efficiency of the heat sink 4 can be accelerated. Optionally, a plurality of heat dissipation protrusions 41 may protrude toward a direction away from the module housing 21 . Thus, the vibrating membrane 6 can drive the air above the heat sink 4 to flow, so that the heat dissipation protrusion 41 can fully contact with the air flow. Optionally, the plurality of heat dissipation protrusions 41 may be formed by stamping.

As shown in Figure 3, according to some embodiments of the present invention, one end (upper end as shown in Figure 2) of pressure guide member 3 away from installation space 2a can be provided with installation step 31, and the outer periphery of diaphragm 6 can be arranged on It is installed in the step 31 , thereby facilitating the assembly of the vibrating membrane 6 and the pressure guiding member 3 . Optionally, a glue groove may be provided in the installation step 31 , and the outer periphery of the vibrating membrane 6 may be assembled with the pressure guiding member 3 in a way of being glued and fixed. Optionally, the vibrating membrane 6 and the pressure guiding member 3 can also be formed as an integral injection molded part.

As shown in Fig. 1, Fig. 2 and Fig. 4, according to some embodiments of the present invention, the sound generating device 100 may further include: a support member 7, the support member 7 may be arranged on the peripheral wall of the module housing 21, and the support member 7 The two ends are respectively connected to the heat sink 4 and the module case 21 , so that the support 7 can separate the heat sink 4 from the module case 21 , thereby improving the heat dissipation effect of the heat sink 4 . Optionally, the outer peripheral edge of the vibrating membrane 6 can be interposed between the pressure guiding member 3 and the heat sink 4, thereby making the assembling method of the vibrating membrane 6 simpler and more convenient to operate.

In the specific example shown in FIG. 2 , the sound emitting device 100 may include four supports 7 , and each support 7 is made of heat insulating material. The heat sink 4 is formed as a square metal plate. The heat sink 4 is provided with a plurality of heat dissipation bumps 41 protruding upwards. The heating device 5 is a chip and fixed on the heat sink 4. The four support members 7 are arranged on the heat sink. 4 and the module housing 21 to space the heat sink 4 from the module housing 21. The portion of the heat sink 4 facing the pressure guide 3 is provided with an escape hole 4a, the pressure guide 3 extends upward relative to the module housing 21, the pressure guide 3 is formed as a hollow cavity structure (formed as a structure similar to a chimney) and The cross-sectional area of the pressure guiding member 3 decreases gradually along the direction from bottom to top. An installation step 31 is provided on the upper end of the pressure guiding member 3 , and the outer periphery of the vibrating membrane 6 is disposed in the installing step 31 , and the bottom of the cooling member 4 abuts against the top of the pressure guiding member 3 to fix the vibrating membrane 6 .

When the sound generating device 100 is working, the heat generated by the heating device 5 will be transferred to the heat sink 4 . The diaphragm of the loudspeaker unit 22 vibrates up and down, thereby causing the air pressure in the module housing 21 to change, and the air pressure in the module housing 21 will flow through the pressure guide 3 to the diaphragm 6 at the outlet of the pressure guide 3, In this way, the vibrating membrane 6 is driven to vibrate up and down, and the air above the heat sink 4 can be driven to flow, and the heat sink 4 can be effectively dissipated while the air is flowing.

As shown in FIG. 5 , according to some embodiments of the present invention, the vibrating membrane 6 is a heat-conducting rubber membrane, so that the vibrating membrane 6 can dissipate part of the heat while vibrating, thereby improving the heat dissipation effect of the sound generating device 100 . Optionally, the vibrating membrane 6 can be made of heat-conducting silica gel, heat-conducting rubber and other materials.

As shown in Figure 6, according to some embodiments of the present invention, the vibrating membrane 6 may include a body part 61 and a counterweight part 62, the body part 61 may be a heat-conducting rubber material, and the center of the body part 61 is provided with a mounting hole for matching The weight part 62 can be arranged in the installation hole, thus, when the vibrating membrane 6 is working, the counterweight part 62 can vibrate up and down to balance the air pressure in the module casing 21 through the counterweight part 62, so as to adjust the loudspeaker module 2 The effect of acoustic performance.

Optionally, the weight portion 62 can be a metal material, and the weight portion 62 can be provided with a plurality of protruding convex structures 621, and the convex structure 621 can increase the heat dissipation area of the weight portion 62, so that it can The heat dissipation efficiency of the vibrating membrane 6 is improved. Further, the counterweight part 62 may be an aluminum sheet, copper sheet, etc. that are integrally stamped and formed. Optionally, the counterweight portion 62 can be assembled with the main body portion 61 by gluing. Certainly, the counterweight portion 62 can also be assembled with the main body portion 61 by integral injection molding.

As shown in Figure 1, according to some embodiments of the present invention, the casing 1 may be provided with a plurality of heat dissipation holes 1b communicating with the installation chamber 1a, and the heat dissipation holes 1b can improve the distance between the installation chamber 1a and the external space. The air exchange efficiency can improve the heat dissipation efficiency of the sound generating device 100 .

As shown in FIG. 1 , in some embodiments of the present invention, the housing 1 may include a first housing 111 and a second housing 121 that cooperate with each other, and the first housing 111 and the second housing 121 cooperate to define The installation chamber 1a, the first housing 111 includes a top wall 111 and a side wall 112, the top wall 111 can be arranged opposite to the heat sink 4, the side wall 112 can be connected to the second housing 121, the top wall 111 includes a 4. The first area 111a facing opposite and the second area 111b located at both ends of the first area 111a, and the second area 111b is provided with heat dissipation holes 1b.

Specifically, when the sound generating device 100 is working, the speaker unit 22 can drive the vibrating membrane 6 to vibrate up and down. By not setting the heat dissipation hole 1b in the first area 111a facing the vibrating membrane 6, the two sides of the first area 111a The cooling hole 1b is provided in the second region 111b of the end, thereby ensuring a certain air circulation pressure in the space facing the vibrating membrane 6, thereby ensuring the circulation speed of the air flow. When the air flow circulates in this area, it can fully exchange heat with the heat sink 4, and can transfer the heat on the heat sink 4 to the space below the second area 111b, and then the heat can be dissipated through the heat dissipation holes 1b on the second area 111b. out. Therefore, through the above arrangement, not only the heat inside the casing 1 can be transferred to the outside space, but also the air circulation speed inside the box can be ensured, and a good heat dissipation effect can be achieved.

Further, as shown in FIG. 1, a plurality of evenly distributed cooling holes 1b may be provided on the outer peripheral wall of the second housing 121, thereby further improving the air circulation efficiency between the inner space of the housing 1 and the outer space, and improving The heat dissipation effect of the sound generating device 100 .

According to the sound generating device 100 of the embodiment of the present invention, the structural design is relatively reasonable and compact. By setting the pressure guide 3 on the module housing 21, the pressure guide 3 can guide the concentration of air pressure in the module housing 21 when the speaker module 2 is working. on the vibrating film 6, thus the vibrating film 6 can be driven to vibrate up and down, the air flow velocity in the installation chamber 1a can be accelerated, and the heat dissipation efficiency of the heat sink 4 can be improved; by setting the guide surface 21a on the inner peripheral wall of the module casing 21 , the guide surface 21a can guide the air pressure, so that when the air pressure in the module casing 21 changes, the air pressure can quickly act on the vibrating membrane 6, thereby speeding up the vibration frequency of the vibrating membrane 6; The first area 111a facing the vibrating membrane 6 is not provided with the heat dissipation hole 1b, and the heat dissipation hole 1b is provided in the second area 111b located at both ends of the first area 111a, thereby ensuring that the space facing the vibrating membrane 6 has A certain air circulation pressure can ensure the circulation speed of air flow. When the air flow circulates in this area, it can fully exchange heat with the heat sink 4, and can transfer the heat on the heat sink 4 to the space below the second area 111b, and then the heat can be dissipated through the heat dissipation holes 1b on the second area 111b. out.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or component Must be in a particular orientation, be constructed in a particular orientation, and operate in a particular orientation, and therefore should not be construed as limiting the invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

In the description of this specification, references to the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific examples," or "some examples" are intended to mean that the implementation A specific feature, structure, material, or characteristic described by an embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations 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 any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the invention is defined by the claims and their equivalents.

Claims

A sounding device, characterized in that it comprises:

a housing, wherein an installation chamber is defined in the housing;

A speaker module, the speaker module is arranged in the installation cavity, the speaker module includes a module casing and a speaker unit, the speaker unit is arranged in the installation space defined by the module casing, the The module shell is provided with a pressure guiding member extending away from the installation space, the pressure guiding member communicates with the installation space and the end of the pressure guiding member away from the installation space is provided with a pressure guiding hole;

A heat sink, the heat sink is arranged on the module casing, a heating device is provided on the heat sink, and an avoidance hole is provided at a position where the heat sink is directly opposite to the pressure guiding hole; and

A vibrating membrane, the vibrating membrane is arranged at the outlet of the pressure guiding part and blocks the pressure guiding hole, the vibrating membrane is arranged opposite to the escape hole, and the vibrating membrane is driven by the speaker unit when it is working Vibrates to drive air flow within the mounting chamber.
The sound generating device according to claim 1, wherein the inner peripheral wall of the module casing is provided with a guide surface, and along the flow direction of the air pressure, the guide surface extends obliquely towards the direction close to the pressure guiding member.
The sound generating device according to claim 2, wherein the guide surface extends along the circumferential direction of the pressure guiding member and forms a closed ring.
The sound generating device according to claim 1, wherein the cross-sectional area of the pressure guiding member gradually decreases along the flow direction of the air pressure.
The sound emitting device according to claim 1, characterized in that, the heat dissipation element is provided with a plurality of protrudingly disposed heat dissipation protrusions.
The sound generating device according to claim 1, wherein an installation step is provided at the end of the pressure guiding member away from the installation space, and the outer periphery of the vibrating membrane is arranged in the installation step.
The sound generating device according to claim 1, further comprising: a support member, the support member is arranged on the outer peripheral wall of the module housing, and the two ends of the support member are connected to the heat sink and the heat sink respectively. The module shells are connected.
The sound generating device according to claim 7, wherein the outer peripheral edge of the vibrating membrane is interposed between the pressure guiding member and the heat dissipation member.
The sound generating device according to any one of claims 1-8, characterized in that the vibrating membrane is a thermally conductive rubber membrane.
The sound generating device according to any one of claims 1-8, wherein the vibrating membrane includes a body part and a counterweight part, the body part is a heat-conducting rubber material, and the center of the body part is set There is an installation hole, and the counterweight part is arranged in the installation hole.
The sound generating device according to claim 10, wherein the weight part is made of a metal material, and the weight part is provided with a plurality of protruding convex hull structures.
The sound generating device according to any one of claims 1-8, characterized in that, the casing is provided with a plurality of cooling holes communicating with the installation chamber.
The sound generating device according to claim 12, wherein the housing comprises a first housing and a second housing which cooperate with each other, the first housing comprises a top wall and a side wall, and the top wall and the second housing The heat sink is arranged directly opposite, the side wall is connected to the second housing, the top wall includes a first area facing the heat sink and second areas located at both ends of the first area, the The heat dissipation holes are provided in the second area.
The sound generating device according to claim 14, characterized in that, a plurality of uniformly distributed cooling holes are provided on the peripheral wall of the second housing.