WO2022253104A1 - 发声装置 - Google Patents

发声装置 Download PDF

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Publication number
WO2022253104A1
WO2022253104A1 PCT/CN2022/095305 CN2022095305W WO2022253104A1 WO 2022253104 A1 WO2022253104 A1 WO 2022253104A1 CN 2022095305 W CN2022095305 W CN 2022095305W WO 2022253104 A1 WO2022253104 A1 WO 2022253104A1
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WO
WIPO (PCT)
Prior art keywords
generating device
sound generating
pressure guiding
housing
module
Prior art date
Application number
PCT/CN2022/095305
Other languages
English (en)
French (fr)
Inventor
王宇
张志峰
Original Assignee
歌尔股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Publication of WO2022253104A1 publication Critical patent/WO2022253104A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/021—Casings; Cabinets ; Supports therefor; Mountings therein incorporating only one transducer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/028—Casings; Cabinets ; Supports therefor; Mountings therein associated with devices performing functions other than acoustics, e.g. electric candles
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0213—Venting apertures; Constructional details thereof
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
    • H05K7/20136—Forced ventilation, e.g. by fans
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
    • H05K7/20436—Inner thermal coupling elements in heat dissipating housings, e.g. protrusions or depressions integrally formed in the housing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/02—Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups

Definitions

  • the invention relates to the field of electroacoustic equipment, in particular to a sound generating device.
  • 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.
  • 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.
  • 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.
  • 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 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.
  • 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.
  • the structural design of the sound generating device in the present invention is more reasonable, compact and practical.
  • 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.
  • the guide surface extends along the circumferential direction of the pressure guiding member and forms a closed ring.
  • the cross-sectional area of the pressure guiding member decreases gradually.
  • the heat dissipation element is provided with a plurality of protrudingly disposed heat dissipation protrusions.
  • 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 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.
  • the outer periphery of the vibrating membrane is sandwiched between the pressure guiding element and the heat dissipation element.
  • the vibrating membrane is a thermally conductive rubber membrane.
  • 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
  • the weight part is arranged on the the mounting holes described above.
  • the weight portion is a piece of metal material, and the weight portion is provided with a plurality of protruding convex hull structures.
  • the casing is provided with a plurality of cooling holes communicating with the installation chamber.
  • 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.
  • 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.
  • a plurality of evenly distributed heat dissipation holes are provided on the outer peripheral wall of the second housing.
  • 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;
  • FIG. 4 is a vertical sectional view of a sound generating device according to a second embodiment of the present invention.
  • FIG. 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.
  • 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,
  • 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.
  • the sound generating device 100 includes: a casing 1 , a speaker module 2 , a pressure guide 3 , a heat sink 4 and a vibrating membrane 6 .
  • 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.
  • 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.
  • the heating device 5 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 .
  • the heat generating device 5 may be a chip or a circuit board of the sound generating device 100
  • the heat sink 4 may be a thermally conductive metal plate manufactured by die-casting, aluminum extrusion, stamping and other processes.
  • 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.
  • 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.
  • 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 .
  • 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.
  • 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 .
  • 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 .
  • the structural design of the sound generating device 100 in the present invention is more reasonable, compact and practical.
  • 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 .
  • 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.
  • the arrangement form of the guide surface 21a is not limited to this.
  • 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.
  • 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 ).
  • the pressure guiding member 3 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.
  • the pressure guiding member 3 is not limited to the above structure.
  • the pressure guiding member 3 can also be formed into a cylindrical structure.
  • 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.
  • a plurality of heat dissipation protrusions 41 may protrude toward a direction away from the module housing 21 .
  • 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.
  • the plurality of heat dissipation protrusions 41 may be formed by stamping.
  • 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 .
  • 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.
  • the vibrating membrane 6 and the pressure guiding member 3 can also be formed as an integral injection molded part.
  • 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 .
  • 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.
  • 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 .
  • 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.
  • 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 .
  • the vibrating membrane 6 can be made of heat-conducting silica gel, heat-conducting rubber and other materials.
  • 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.
  • 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.
  • the counterweight part 62 may be an aluminum sheet, copper sheet, etc. that are integrally stamped and formed.
  • 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.
  • 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 .
  • 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.
  • the speaker unit 22 can drive the vibrating membrane 6 to vibrate up and down.
  • 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.
  • 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.
  • 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 .
  • the structural design is relatively reasonable and compact.
  • 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;
  • 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
  • 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.
  • 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.
  • 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.
  • schematic representations of the above terms do not necessarily refer to the same embodiment or example.
  • the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Thermal Sciences (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

本发明公开了一种发声装置，包括：壳体、扬声器模组、导压件、散热件和振动膜。其中，扬声器模组设在壳体内，扬声器模组包括模组外壳和扬声器单体，模组外壳上设有朝向远离安装空间方向延伸的导压件，导压件与安装空间连通且导压件远离安装空间的一端设有导压孔，散热件设在模组外壳上，散热件上设有发热装置，散热件与导压孔正对的位置设有避让孔，振动膜设于导压件的出口处并遮挡导压孔，振动膜与避让孔正对设置，扬声器单体工作时驱动振动膜振动以驱动安装腔室内的空气流动。根据本发明的发声装置，结构简单紧凑，通过模组外壳上设置导压件，导压件引导模组外壳内的气压集中作用于振动膜，由此可以驱动振动膜上下振动，提升散热件的散热效率。

Description

发声装置 技术领域
本发明涉及电声设备领域，尤其是涉及一种发声装置。
背景技术
随着科学技术的发展，人们对电子设备中的发声装置的性能要求也越来越高，发声装置逐渐朝向高集成化、高音量、高重低音等方向发展。但是，发声装置在工作过程中，其芯片会产生大量的热量，若不对芯片进行有效地散热，则会影响芯片的正常工作，进而会影响发声装置的使用效果。
在相关技术中，提出一种音响装置，音响装置的箱体上设有被动膜片，箱体外侧设有与被动膜片正对设置的散热片，音响的芯片与散热片集成在一起。当音响装置工作时，扬声器模组工作驱动箱体内的气压作用于被动膜片，被动膜片振动以驱动气流吹向散热片，由此实现对芯片散热的目的。但是，上述技术方案中的音响装置的结构设计比较复杂，而且，由于箱体的体积较大，扬声器模组工作时驱动的气压较小，被动膜片振动产生的气流流动速度较慢，从而对散热片产生的散热效果较差，无法满足芯片的散热需求。
发明内容
本发明旨在至少解决现有技术中存在的技术问题之一。为此，本发明提出一种发声装置，所述发声装置具有结构设计简单、散热效果好的优点。
根据本发明实施例的发声装置，包括：壳体，所述壳体内限定出安装腔室；扬声器模组，所述扬声器模组设在所述安装腔室内，所述扬声器模组包括模组外壳和扬声器单体，所述扬声器单体设在所述模组外壳限定的安装空 间内，所述模组外壳上设有朝向远离所述安装空间方向延伸的导压件，所述导压件与所述安装空间连通且所述导压件远离所述安装空间的一端设有导压孔；散热件，所述散热件设在所述模组外壳上，所述散热件上设有发热装置，所述散热件与所述导压孔正对的位置设有避让孔；振动膜，所述振动膜设于所述导压件的出口处并遮挡所述导压孔，所述振动膜与所述避让孔正对设置，所述扬声器单体工作时驱动所述振动膜振动以驱动所述安装腔室内的空气流动。
根据本发明实施例的发声装置，通过模组外壳上设置导压件，扬声器模组工作时导压件可以引导模组外壳内的气压集中作用于振动膜，由此可以驱动振动膜上下振动，可以加快安装腔室内的空气流动速度，进而可以提升散热件的散热效率，确保发声装置的正常运行。而且，本发明中的发声装置结构设计更加合理、紧凑，实用性较强。
根据本发明的一些实施例，所述模组外壳的内周壁设有导向面，沿气压的流动方向，所述导向面朝向靠近所述导压件的方向倾斜延伸。
在本发明的一些实施例中，所述导向面沿所述导压件的周向方向延伸并形成为闭环形。
根据本发明的一些实施例，沿气压的流动方向，所述导压件的横截面积逐渐减小。
根据本发明的一些实施例，所述散热件上设有多个凸出设置的散热凸包。
根据本发明的一些实施例，所述导压件远离所述安装空间的一端设有安装台阶，所述振动膜的外周沿设在所述安装台阶内。
根据本发明的一些实施例，所述发声装置还包括：支撑件，所述支撑件设在所述模组外壳的外周壁上，所述支撑件的两端分别与所述散热件和所述模组外壳相连。
在本发明的一些实施例中，所述振动膜的外周缘夹设在所述导压件和所 述散热件之间。
根据本发明的一些实施例，所述振动膜为导热橡胶膜。
根据本发明的一些实施例，所述振动膜包括本体部和配重部，所述本体部为导热橡胶材料件，所述本体部的中心位置设有安装孔，所述配重部设于所述安装孔。
在本发明的一些实施例中，所述配重部为金属材料件，所述配重部上设有多个凸出设置的凸包结构。
根据本发明的一些实施例，所述壳体上设有多个与所述安装腔室连通的散热孔。
在本发明的一些实施例中，所述壳体包括相互配合的第一壳体和第二壳体，所述第一壳体包括顶壁和侧壁，所述顶壁与所述散热件正对设置，所述侧壁与所述第二壳体相连，所述顶壁包括与散热件正对的第一区域和位于所述第一区域两端的第二区域，所述第二区域内设有所述散热孔。
在本发明的一些实施例中，所述第二壳体的外周壁上设有多个均匀分布的所述散热孔。
本发明的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。
附图说明
本发明的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1是根据本发明一个实施例的发声装置的***结构示意图；
图2是根据本发明第一实施例的发声装置的竖直剖面图；
图3是图2中A圈示部分的局部放大图；
图4是根据本发明第二实施例的发声装置的竖直剖面图；
图5是根据本发明第一实施例的振动膜的竖直剖面图；
图6是根据本发明第二实施例的振动膜的竖直剖面图。
附图标记：
发声装置100，
壳体1，安装腔室1a，散热孔1b，第一壳体11，顶壁111，第一区域111a，第二区域111b，侧壁112，第二壳体12，
扬声器模组2，模组外壳21，导向面21a，扬声器单体22，安装空间2a，
导压件3，导压孔3a，安装台阶31，
散热件4，避让孔4a，散热凸包41，
发热装置5，
振动膜6，本体部61，配重部62，凸包结构621，
支撑件7。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的组件或具有相同或类似功能的组件。下面通过参考附图描述的实施例是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。
下面参考图1-图6描述根据本发明实施例的发声装置100，该发声装置100可以为音响。
如图1、图2和图4所示，根据本发明实施例的发声装置100，包括：壳体1、扬声器模组2、导压件3、散热件4和振动膜6。
其中，壳体1内可以限定出安装腔室1a，扬声器模组2、导压件3、散热件4和振动膜6均设在安装空间2a内。扬声器模组2可以包括模组外壳21和扬声器单体22，扬声器单体22设在模组外壳21限定的安装空间2a内，模组外壳21上设有朝向远离安装空间2a方向(如图2所示的向上)延 伸的导压件3，导压件3中空设置与安装空间2a连通且导压件3远离安装空间2a的一端设有导压孔3a。
如图2和图4所示，散热件4可以设在模组外壳21上，散热件4上可以设有发热装置5，散热件4与导压孔3a正对的位置设有避让孔4a。当发声装置100工作时，发热装置5产生热量，发热装置5产生的热量可以传递至散热件4。可选地，发热装置5可以为发声装置100的芯片或电路板，散热件4可以为采用压铸、铝挤、冲压等工艺制程的导热金属板。
如图2所示，振动膜6可以设于导压件3的出口处并遮挡导压孔3a，振动膜6与避让孔4a正对设置，扬声器单体22工作时可以驱动振动膜6振动以驱动安装腔室1a内的空气流动。具体而言，当发声装置100工作时，扬声器单体22的振膜上下振动，由此可以导致模组外壳21内的空间气压发生变化，由于导压件3的入口面积相比于安装腔室1a要小的多，所以安装空间2a内气压发生变化时，安装空间2a内的气压会集中作用于导压件3出口处的振动膜6，振动膜6会随着扬声器单体22的工作而上下振动，由此可以驱动安装腔室1a内的空气流动。由于散热件4位于安装腔室1a内，发热装置5产生的热量传递至散热件4，空气流动的同时会对散热件4进行有效地散热，由此可以加快散热件4的散热效率，进而可以确保发热装置5的正常运行。
可选地，导压件3可以与模组外壳21形成为一体成型件，例如，导压件3可以与模组外壳21形成为一体注塑件。当然，导压件3也可以与模组外壳21形成为分体件，导压件3可以采用焊接或胶粘的方式与模组外壳21装配在一起。对于导压件3的结构设置形式，本申请不作具体限制。
根据本发明实施例的发声装置100，通过模组外壳21上设置导压件3，扬声器模组2工作时导压件3可以引导模组外壳21内的气压集中作用于振动膜6，由此可以驱动振动膜6上下振动，可以加快安装腔室1a内的空气流动速度，进而可以提升散热件4的散热效率，确保发声装置100的正常运 行。而且，本发明中的发声装置100结构设计更加合理、紧凑，实用性较强。
如图2-图3所示，根据本发明的一些实施例，模组外壳21的内周壁可以设有导向面21a，沿气压的流动方向，导向面21a朝向靠近导压件3的方向倾斜延伸，导向面21a可以对气压起到导向的作用，由此当模组外壳21内的气压产生变化时，气压可以迅速作用于振动膜6，由此不仅可以提升振动膜6的相应速度，同时还可以加快振动膜6的振动频率，进而可以提升散热件4的散热效率。
在本发明的一些实施例中，导向面21a可以沿导压件3的周向方向延伸并形成为闭环形，由此可以引导导压件3四周的气压同时流向导压件3内，提升振动膜6的振动频率。当然可以理解的是，导向面21a的设置形式并不仅限于此。例如，导向面21a也可以设置成多个不连续的平面，多个平面均朝向靠近导压件3的内腔的方向倾斜延伸，由此也可以起到很好的导压效果。
如图2-图3所示，在本发明的一些实施例中，沿气压的流动方向(如图2所示的从下往上的方向)，导压件3的横截面积逐渐减小。由此，在气压的流动过程中，由于导压件3的横截面积逐渐减小，气压受到的压力逐渐增大，从而可以提升气压的流通速度，进而可以加快振动膜6的振动频率，提升散热件4的散热效率。当然，导压件3并不仅限于设置成上述结构。例如，如图4所示，导压件3还可以形成为圆柱筒结构。
如图1和图3所示，根据本发明的一些实施例，散热件4上可以设置多个凸出设置的散热凸包41，由此可以增大散热件4与空气气流的接触面积，从而可以加快散热件4的散热效率。可选地，多个散热凸包41可以朝向远离模组外壳21的方向凸出。由此，振动膜6可以驱动散热件4上方的空气进行流动，从而可以使散热凸包41与空气气流充分接触。可选地，多个散热凸包41可以采用冲压成型的方式形成。
如图3所示，根据本发明的一些实施例，导压件3远离安装空间2a的 一端(如图2中所示的上端)可以设有安装台阶31，振动膜6的外周沿可以设在安装台阶31内，由此可以方便振动膜6与导压件3进行装配。可选地，安装台阶31内可以设置容胶槽，振动膜6的外周沿可以采用胶粘固定的方式与导压件3装配在一起。可选地，振动膜6还可以与导压件3形成为一体注塑件。
如图1、图2和图4所示，根据本发明的一些实施例，发声装置100还可以包括：支撑件7，支撑件7可以设在模组外壳21的外周壁上，支撑件7的两端分别与散热件4和模组外壳21相连，由此，支撑件7可以将散热件4与模组外壳21之间间隔开，由此可以提升散热件4的散热效果。可选地，振动膜6的外周缘可以夹设在导压件3和散热件4之间，由此可以使振动膜6的装配方式更加简单，方便操作。
在图2所示的具体示例中，发声装置100可以包括四个支撑件7，每个支撑件7均由绝热材料制成。散热件4形成为方形的金属板，散热件4上设有多个向上凸出延伸的散热凸包41，发热装置5为芯片并固定在散热件4上，四个支撑件7设在散热件4和模组外壳21之间以将散热件4与模组外壳21间隔开。散热件4正对导压件3的部分设有避让孔4a，导压件3相对模组外壳21向上延伸，导压件3形成为中空的腔体结构(形成为类似于烟囱的结构)且沿从下往上的方向导压件3的横截面积逐渐减小。导压件3的上端设有安装台阶31，振动膜6的外周沿设在安装台阶31内，且散热件4的底部抵接于导压件3的顶端以对振动膜6进行固定。
当发声装置100工作时，发热装置5产生的热量会传递至散热件4。扬声器单体22的振膜上下振动，由此会使模组外壳21内的气压发生变化，模组外壳21内的气压会经过导压件3流通至导压件3出口处的振动膜6，由此驱动振动膜6上下振动，可以驱动散热件4上方的空气流动，空气流动的同时可以对散热件4进行有效地散热。
如图5所示，根据本发明的一些实施例，振动膜6为导热橡胶膜，由此， 振动膜6在振动的同时，还可以散发出一部分热量，从而可以提升发声装置100的散热效果。可选地，振动膜6可以由导热硅胶、导热橡胶等材料制成。
如图6所示，根据本发明的一些实施例，振动膜6可以包括本体部61和配重部62，本体部61可以为导热橡胶材料件，本体部61的中心位置设有安装孔，配重部62可以设于安装孔，由此，当振动膜6工作时，配重部62可以上下振动以通过配重部62平衡模组外壳21内的气压大小，从而可以起到调节扬声器模组2声学性能的效果。
可选地，配重部62可以为金属材料件，配重部62上可以设有多个凸出设置的凸包结构621，凸包结构621可以增大配重部62的散热面积，从而可以提升振动膜6的散热效率。进一步地，配重部62可以为一体冲压成型的铝片、铜片等。可选地，配重部62可以通过胶粘的方式与本体部61装配在一起。当然，配重部62还可以采用一体注塑成型的方式与本体部61装配在一起。
如图1所示，根据本发明的一些实施例中，壳体1上可以设有多个与安装腔室1a连通的散热孔1b，散热孔1b可以提升安装腔室1a与外部空间之间的空气交换效率，从而可以提升发声装置100的散热效率。
如图1所示，在本发明的一些实施例中，壳体1可以包括相互配合的第一壳体111和第二壳体121，第一壳体111和第二壳体121配合以限定出安装腔室1a，第一壳体111包括顶壁111和侧壁112，顶壁111可以与散热件4正对设置，侧壁112可以与第二壳体121相连，顶壁111包括与散热件4正对的第一区域111a和位于第一区域111a两端的第二区域111b，第二区域111b内设有散热孔1b。
具体而言，当发声装置100工作时，扬声器单体22可以驱动振动膜6上下振动，通过在与振动膜6正对的第一区域111a内不设置散热孔1b、在位于第一区域111a两端的第二区域111b内设置散热孔1b，由此可以确保与振动膜6正对的空间内具有一定的空气流通压力，从而可以确保空气气流 的流通速度。空气气流在该区域内流通时可以与散热件4充分换热，可以将散热件4上的热量传递至第二区域111b下方的空间内，然后热量可以通过第二区域111b上的散热孔1b散出。由此，通过上述设置，不仅可以将壳体1内部的热量传递至外部空间，而且还可以确保箱体内部的空气流通速度，可以起到很好的散热效果。
进一步地，如图1所示，第二壳体121的外周壁上可以设置多个均匀分布的散热孔1b，由此可以进一步提升壳体1内部空间与外部空间之间的空气流通效率，提升发声装置100的散热效果。
根据本发明实施例的发声装置100，结构设计比较合理、紧凑，通过模组外壳21上设置导压件3，扬声器模组2工作时导压件3可以引导模组外壳21内的气压集中作用于振动膜6，由此可以驱动振动膜6上下振动，可以加快安装腔室1a内的空气流动速度，进而可以提升散热件4的散热效率；通过在模组外壳21的内周壁设置导向面21a，导向面21a可以对气压起到导向的作用，由此当模组外壳21内的气压产生变化时，气压可以迅速作用于振动膜6，由此可以加快振动膜6的振动频率；通过在在与振动膜6正对的第一区域111a内不设置散热孔1b、在位于第一区域111a两端的第二区域111b内设置散热孔1b，由此可以确保与振动膜6正对的空间内具有一定的空气流通压力，从而可以确保空气气流的流通速度。空气气流在该区域内流通时可以与散热件4充分换热，可以将散热件4上的热量传递至第二区域111b下方的空间内，然后热量可以通过第二区域111b上的散热孔1b散出。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或组件必须具有特定的方位、以特定的方位构造和 操作，因此不能理解为对本发明的限制。此外，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明的描述中，除非另有说明，“多个”的含义是两个或两个以上。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个组件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管已经示出和描述了本发明的实施例，本领域的普通技术人员可以理解：在不脱离本发明的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由权利要求及其等同物限定。

Claims (14)

  1. 一种发声装置，其特征在于，包括：
    壳体，所述壳体内限定出安装腔室；
    扬声器模组，所述扬声器模组设在所述安装腔室内，所述扬声器模组包括模组外壳和扬声器单体，所述扬声器单体设在所述模组外壳限定的安装空间内，所述模组外壳上设有朝向远离所述安装空间方向延伸的导压件，所述导压件与所述安装空间连通且所述导压件远离所述安装空间的一端设有导压孔；
    散热件，所述散热件设在所述模组外壳上，所述散热件上设有发热装置，所述散热件与所述导压孔正对的位置设有避让孔；及
    振动膜，所述振动膜设于所述导压件的出口处并遮挡所述导压孔，所述振动膜与所述避让孔正对设置，所述扬声器单体工作时驱动所述振动膜振动以驱动所述安装腔室内的空气流动。
  2. 根据权利要求1所述的发声装置，其特征在于，所述模组外壳的内周壁设有导向面，沿气压的流动方向，所述导向面朝向靠近所述导压件的方向倾斜延伸。
  3. 根据权利要求2所述的发声装置，其特征在于，所述导向面沿所述导压件的周向方向延伸并形成为闭环形。
  4. 根据权利要求1所述的发声装置，其特征在于，沿气压的流动方向，所述导压件的横截面积逐渐减小。
  5. 根据权利要求1所述的发声装置，其特征在于，所述散热件上设有多个凸出设置的散热凸包。
  6. 根据权利要求1所述的发声装置，其特征在于，所述导压件远离所述安装空间的一端设有安装台阶，所述振动膜的外周沿设在所述安装台阶内。
  7. 根据权利要求1所述的发声装置，其特征在于，还包括：支撑件，所述支撑件设在所述模组外壳的外周壁上，所述支撑件的两端分别与所述散热件和所述模组外壳相连。
  8. 根据权利要求7所述的发声装置，其特征在于，所述振动膜的外周缘夹设在所述导压件和所述散热件之间。
  9. 根据权利要求1-8中任一项所述的发声装置，其特征在于，所述振动膜为导热橡胶膜。
  10. 根据权利要求1-8中任一项所述的发声装置，其特征在于，所述振动膜包括本体部和配重部，所述本体部为导热橡胶材料件，所述本体部的中心位置设有安装孔，所述配重部设于所述安装孔。
  11. 根据权利要求10所述的发声装置，其特征在于，所述配重部为金属材料件，所述配重部上设有多个凸出设置的凸包结构。
  12. 根据权利要求1-8中任一项所述的发声装置，其特征在于，所述壳体上设有多个与所述安装腔室连通的散热孔。
  13. 根据权利要求12所述的发声装置，其特征在于，所述壳体包括相互配合的第一壳体和第二壳体，所述第一壳体包括顶壁和侧壁，所述顶壁与所述散热件正对设置，所述侧壁与所述第二壳体相连，所述顶壁包括与散热件正对的第一区域和位于所述第一区域两端的第二区域，所述第二区域内设有所述散热孔。
  14. 根据权利要求14所述的发声装置，其特征在于，所述第二壳体的外周壁上设有多个均匀分布的所述散热孔。
PCT/CN2022/095305 2021-05-31 2022-05-26 发声装置 WO2022253104A1 (zh)

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