WO2024045282A1 - 具有发声功能的电子设备 - Google Patents

具有发声功能的电子设备 Download PDF

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Publication number
WO2024045282A1
WO2024045282A1 PCT/CN2022/125142 CN2022125142W WO2024045282A1 WO 2024045282 A1 WO2024045282 A1 WO 2024045282A1 CN 2022125142 W CN2022125142 W CN 2022125142W WO 2024045282 A1 WO2024045282 A1 WO 2024045282A1
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WO
WIPO (PCT)
Prior art keywords
sound
channel
electronic device
generating unit
speaker
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PCT/CN2022/125142
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English (en)
French (fr)
Inventor
任璋
王奇
钟志威
Original Assignee
瑞声光电科技(常州)有限公司
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Application filed by 瑞声光电科技(常州)有限公司 filed Critical 瑞声光电科技(常州)有限公司
Priority to US18/089,583 priority Critical patent/US20240073568A1/en
Publication of WO2024045282A1 publication Critical patent/WO2024045282A1/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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • the present invention relates to the field of electroacoustic conversion, and in particular to an electronic device with a sound-generating function.
  • a related art electronic device with a sound-generating function includes a housing structural member and a speaker installed on the housing structural member.
  • the speaker includes a first sound-emitting unit and a second sound-emitting unit arranged coaxially, the first sound-emitting unit is arranged around the outside of the second sound-emitting unit, the first sound-emitting unit is used for bass sound, and the second sound-emitting unit is used for treble sound.
  • the shell structural member is provided with a sound guide channel that guides the sound emitted by the speaker to the outside of the electronic device.
  • the bass sound emitted by the first sound-emitting unit and the treble sound emitted by the second sound-emitting unit are derived from the same sound guide channel.
  • Size limitations and the impact between high and low frequencies weaken the treble effect, resulting in insufficient treble in electronic devices.
  • the purpose of the present invention is to overcome the above technical problems and provide an electronic device with sound generation function that improves the high-pitched effect.
  • the present invention provides an electronic device with a sound-generating function, which includes a housing structural member and a speaker installed on the housing structural member.
  • the speaker includes a coaxially arranged first sound-generating unit and a third sound-generating unit. Two sound-emitting units, the first sound-emitting unit is arranged around the outside of the second sound-emitting unit, the first sound-emitting unit is used for bass sound, the second sound-emitting unit is used for high-pitched sound, the shell structural member
  • a sound guide channel is provided for exporting the sound emitted by the speaker to the outside of the electronic device.
  • the sound guide channel includes a first channel for exporting the sound emitted by the first sound-emitting unit, and a first channel for exporting the sound emitted by the second sound-emitting unit. a second channel through which sound is derived and separated from the first channel, and a common channel that jointly communicates the first channel and the second channel to the outside of the electronic device, the second channel including the second sound emitting.
  • the front cavity of the unit and the connecting channel connecting the front cavity and the common channel, the connecting channel is arranged in a horn structure.
  • the housing structural member includes a middle frame and a screen covering the middle frame, and the middle frame and the screen jointly form the sound guide channel.
  • the middle frame includes a main body wall on which the speaker is installed and a side wall connected to the main body wall and located on the side of the speaker, and the main body wall is provided with a wall extending in a direction away from the screen.
  • the support part, the speaker includes a first basin and a second basin, the first basin is arranged around the outside of the second basin, and the first sound-generating unit is arranged on the first basin and the second basin.
  • the second sound-generating unit is disposed inside the second basin frame, the first basin frame is fixed to the support part, and the main body wall is further provided with a A first through hole above a sound generating unit, a second through hole located above the second sound generating unit, and a partition wall separating the first through hole and the second through hole, the partition wall including The surrounding wall of the front cavity, the second basket frame is fixed to the surrounding wall, the surrounding wall is provided with a fracture, and the partition wall also includes an opposite wall extending from the fracture in a direction away from the surrounding wall.
  • a pair of extending walls are spaced apart, the pair of extending walls form the connecting channel, and the spacing distance between the pair of extending walls gradually increases in a direction away from the fracture opening and away from the surrounding wall.
  • the common channel includes a first part formed between the screen and the main body wall, and a second part formed in the side wall, with an opening between the first part and the second part. There is damping mesh.
  • the speaker further includes a magnetic circuit system, the first basket and the second basket are fixed to the magnetic circuit system, the magnetic circuit system is provided with a first magnetic gap and a second magnetic gap,
  • the first sound-generating unit includes a first diaphragm and a first voice coil that drives the first diaphragm to vibrate and produce sound.
  • the second sound-generating unit includes a second diaphragm and a third diaphragm that drives the second diaphragm to vibrate and produce sound. Two voice coils, the first voice coil is inserted in the first magnetic gap, and the second voice coil is inserted in the second magnetic gap.
  • the sound-guiding channel includes a first channel that leads out the sound emitted by the first sound-generating unit, and a second channel that leads out the sound emitted by the second sound-generating unit and is separated from the first channel.
  • the first channel and the second channel are jointly connected to a common channel outside the electronic device
  • the second channel includes the front cavity of the second sound-generating unit, and a connecting channel that connects the front cavity and the common channel, and the connecting channel is configured as a horn structure
  • the bass emitted by the first sounding unit and the treble emitted by the second sounding unit first pass through independent separate channels and then merge in the common channel.
  • the treble emitted by the second sounding unit will also pass through the front cavity of the second channel and be set into a horn.
  • the structural connection channel amplification improves the treble effect and ensures the unobstructed bass sound to the greatest extent.
  • Figure 1 is a perspective view of the partial structure of the electronic device with sound generation function of the present invention
  • Figure 2 is a three-dimensional exploded view of the electronic device with sound generation function shown in Figure 1;
  • Figure 3 is a perspective view of the electronic device with a sound-producing function shown in Figure 1 with the screen removed;
  • FIG. 4 is a cross-sectional view along line A-A in FIG. 1 .
  • the present invention provides an electronic device 100 with a sound-generating function.
  • the electronic device 100 with a sound-generating function includes a housing structural member 1 and a speaker installed on the housing structural member 1. 2.
  • the electronic device 100 with a sound-generating function may be a mobile phone, a tablet computer, etc.
  • the speaker 2 includes a first sound-emitting unit 21 and a second sound-emitting unit 22 arranged coaxially.
  • the first sound-emitting unit 21 is arranged around the outside of the second sound-emitting unit 22.
  • the first sound-emitting unit 21 is used for
  • the second sound-generating unit 22 is used for producing high-pitched sounds.
  • the housing structure 1 is provided with a sound guide channel 10 that guides the sound emitted by the speaker 2 to the outside of the electronic device 100 .
  • the sound guide channel 10 includes a third channel that guides the sound emitted by the first sound unit 21 .
  • a channel 101, a second channel 102 that leads out the sound emitted by the second sound unit 22 and is separated from the first channel 101, and the first channel 101 and the second channel 102 are commonly connected to Common channel 103 outside electronic device 100 .
  • the housing structural member 1 includes a middle frame 11 and a screen 12 covering the middle frame 11 .
  • the middle frame 11 and the screen 12 jointly form the sound guide channel 10 .
  • the second channel 102 includes a front cavity 1021 of the second sound-generating unit 22 and a connecting channel 1022 that connects the front cavity 1021 and the common channel 103 .
  • the connecting channel 1022 is arranged in a horn structure.
  • the middle frame 11 includes a main body wall 111 on which the speaker 2 is installed and a side wall 112 connected to the main body wall 111 and located to the side of the speaker 2.
  • the main body wall 111 is provided with a direction facing away from the screen.
  • the support portion 1111 extends in the direction of 12.
  • the speaker 2 includes a first basket 23 and a second basket 24.
  • the first basket 23 is arranged around the outside of the second basket 24.
  • the sound-generating unit 21 is disposed between the first basin frame 23 and the second basin frame 24.
  • the second sound-generating unit 22 is disposed inside the second basin frame 24.
  • the first basin frame 23 is fixed.
  • the main wall 111 is also provided with a first through hole 1112 located above the first sound generating unit 21, a second through hole 1113 located above the second sound generating unit 22, and a separation space.
  • the partition wall 1114 of the first through hole 1112 and the second through hole 1113 includes a surrounding wall 11141 that forms the front cavity 1021, and the second basket 24 is fixed to the surrounding wall 11141.
  • the surrounding wall 11141 is provided with a break X
  • the partition wall 1114 also includes a pair of extension walls 11142 extending from the break X in a direction away from the surrounding wall 11141 and being relatively spaced apart.
  • the wall 11142 forms the connecting channel 1022 and the distance between the pair of extending walls 11142 gradually increases in the direction away from the surrounding wall 11141 from the fracture X.
  • the common channel 103 includes a first part 1031 formed between the screen 12 and the main body wall 111 and a second part 1032 formed in the side wall 112.
  • the first part 1031 and the second part A damping mesh 3 is provided between the parts 1032 .
  • the speaker 2 also includes a magnetic circuit system 25.
  • the first basket 23 and the second basket 24 are fixed to the magnetic circuit system 25.
  • the magnetic circuit system 25 is provided with a first magnetic gap 251 and a third magnetic gap 251.
  • the first sound-generating unit 21 includes a first diaphragm 211 and a first voice coil 212 that drives the first diaphragm 211 to vibrate and produce sound.
  • the second sound-generating unit 22 includes a second diaphragm 221 and The second voice coil 222 drives the second diaphragm 221 to vibrate and produce sound.
  • the first voice coil 212 is inserted into the first magnetic gap 251.
  • the second voice coil 222 is inserted into the second magnetic gap. Gap 252.
  • the sound-guiding channel includes a first channel that leads out the sound emitted by the first sound-generating unit, and a second channel that leads out the sound emitted by the second sound-generating unit and is separated from the first channel.
  • the first channel and the second channel are jointly connected to a common channel outside the electronic device
  • the second channel includes the front cavity of the second sound-generating unit, and a connecting channel that connects the front cavity and the common channel, and the connecting channel is configured as a horn structure
  • the bass emitted by the first sounding unit and the treble emitted by the second sounding unit first pass through independent separate channels and then merge in the common channel.
  • the treble emitted by the second sounding unit will also pass through the front cavity of the second channel and be set into a horn.
  • the structural connection channel amplification improves the treble effect and ensures the smooth sound of the bass to the greatest extent.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

本发明提供了一种具有发声功能的电子设备，其包括壳体结构件和安装于壳体结构件上的扬声器，扬声器包括同轴设置的第一发声单元和第二发声单元，第一发声单元环绕设置于第二发声单元的外侧，第一发声单元用于低音发声，第二发声单元用于高音发声，壳体结构件设有将扬声器发出的声音导出到电子设备外部的导声通道，导声通道包括将第一发声单元发出的声音导出的第一通道、将第二发声单元发出的声音导出的且与第一通道分隔的第二通道、以及将两个通道共同连通到电子设备外部的公共通道，第二通道包括第二发声单元的前腔、以及连通前腔和公共通道的连接通道，连接通道设置成号角结构。本发明的具有发声功能的电子设备提升了高音效果。

Description

具有发声功能的电子设备
【 技术领域】
本发明涉及电声转换领域，尤其涉及一种具有发声功能的电子设备。
【 背景技术】
相关技术的具有发声功能的电子设备，其包括壳体结构件和安装于壳体结构件上的扬声器。其中，扬声器包括同轴设置的第一发声单元和第二发声单元，第一发声单元环绕设置于第二发声单元的外侧，第一发声单元用于低音发声，第二发声单元用于高音发声，壳体结构件设有将扬声器发出的声音导出到电子设备外部的导声通道，第一发声单元发出的低音和第二发声单元发出的高音由此同一个导声通道导出，然而，受制于扬声器尺寸大小的限制以及高低音之间的影响，削弱了高音效果，从而造成了电子设备的高音不足。
因此，实有必要提供一种新的具有发声功能的电子设备解决上述技术问题。
【 发明内容】
本发明的目的是克服上述技术问题，提供一种提升了高音效果的具有发声功能的电子设备。
为了实现上述目的，本发明提供一种具有发声功能的电子设备，其包括壳体结构件和安装于所述壳体结构件上的扬声器，所述扬声器包括同轴设置的第一发声单元和第二发声单元，所述第一发声单元环绕设置于所述第二发声单元的外侧，所述第一发声单元用于低音发声，所述第二发声单元用于高音发声，所述壳体结构件设有将所述扬声器发出的声音导出到电子设备外部的导声通道，所述导声通道包括将所述第一发声单元发出的声音导出的第一通道、将所述第二发声单元发出的声音导出的且与所述第一通道分隔的第二通道、以及将所述第一通道和所述第二通道共同连通到电子设备外部的公共通道，所述第二通道包括所述第二发声单元的前腔、以及连通所述前腔和所述公共通道的连接通道，所述连接通道设置成号角结构。
优选的，所述壳体结构件包括中框和盖接于所述中框上的屏幕，所述中框和所述屏幕共同形成所述导声通道。
优选的，所述中框包括安装所述扬声器的主体壁和与所述主体壁连接的且位于所述扬声器的侧方的侧壁，所述主体壁设有向远离所述屏幕的方向延伸的支撑部，所述扬声器包括第一盆架和第二盆架，所述第一盆架环绕设置于所述第二盆架的外侧，所述第一发声单元设置于所述第一盆架和所述第二盆架之间，所述第二发声单元设置于所述第二盆架的内侧，所述第一盆架固定于所述支撑部，所述主体壁还设有位于所述第一发声单元上方的第一通孔、位于所述第二发声单元上方的第二通孔、以及分隔所述第一通孔和所述第二通孔的分隔壁，所述分隔壁包括形成所述前腔的围壁，所述第二盆架固定于所述围壁，所述围壁设有断口，所述分隔壁还包括自所述断口向远离所述围壁的方向延伸的且相对间隔设置的一对延伸壁，所述一对延伸壁形成所述连接通道且所述一对延伸壁之间的间隔距离在自所述断口向远离所述围壁的方向上逐渐增大。
优选的，所述公共通道包括形成于所述屏幕和所述主体壁之间的第一部分、以及形成于所述侧壁内的第二部分，所述第一部分和所述第二部分之间设有阻尼网布。
优选的，所述扬声器还包括磁路系统，所述第一盆架和所述第二盆架固定于所述磁路系统，所述磁路系统设有第一磁间隙和第二磁间隙，所述第一发声单元包括第一振膜和驱动所述第一振膜振动发声的第一音圈，所述第二发声单元包括第二振膜和驱动所述第二振膜振动发声的第二音圈，所述第一音圈插设于所述第一磁间隙，所述第二音圈插设于所述第二磁间隙。
本发明的具有发声功能的电子设备，其中，导声通道包括将第一发声单元发出的声音导出的第一通道、将第二发声单元发出的声音导出的且与第一通道分隔的第二通道、以及将第一通道和第二通道共同连通到电子设备外部的公共通道，第二通道包括第二发声单元的前腔、以及连通前腔和公共通道的连接通道，连接通道设置成号角结构，第一发声单元发出的低音和第二发声单元发出的高音先各自经过独立分隔的通道后再在公共通道汇合，同时第二发声单元发出的高音还会经过第二通道的前腔和设置成号角结构的连接通道的扩音，从而提升了高音效果，并且最大限度地保证了低音出声的通畅。
【 附图说明】
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本发明领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图，其中：
图1为本发明的具有发声功能的电子设备局部结构的立体图；
图2为图1所示具有发声功能的电子设备的立体分解图；
图3为图1所示具有发声功能的电子设备去除屏幕的立体图；
图4为沿图1中A-A线的剖面视图。
【具体实施方式】
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本发明领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
请参阅图1-4所示，本发明提供一种具有发声功能的电子设备100，所述具有发声功能的电子设备100包括壳体结构件1和安装于所述壳体结构件1上的扬声器2。所述具有发声功能的电子设备100可以是手机、平板电脑等。
所述扬声器2包括同轴设置的第一发声单元21和第二发声单元22，所述第一发声单元21环绕设置于所述第二发声单元22的外侧，所述第一发声单元21用于低音发声，所述第二发声单元22用于高音发声。
所述壳体结构件1设有将所述扬声器2发出的声音导出到电子设备100外部的导声通道10，所述导声通道10包括将所述第一发声单元21发出的声音导出的第一通道101、将所述第二发声单元22发出的声音导出的且与所述第一通道101分隔的第二通道102、以及将所述第一通道101和所述第二通道102共同连通到电子设备100外部的公共通道103。在本实施方式中，所述壳体结构件1包括中框11和盖接于所述中框11上的屏幕12，所述中框11和所述屏幕12共同形成所述导声通道10。
所述第二通道102包括所述第二发声单元22的前腔1021、以及连通所述前腔1021和所述公共通道103的连接通道1022，所述连接通道1022设置成号角结构。
所述中框11包括安装所述扬声器2的主体壁111和与所述主体壁111连接的且位于所述扬声器2的侧方的侧壁112，所述主体壁111设有向远离所述屏幕12的方向延伸的支撑部1111，所述扬声器2包括第一盆架23和第二盆架24，所述第一盆架23环绕设置于所述第二盆架24的外侧，所述第一发声单元21设置于所述第一盆架23和所述第二盆架24之间，所述第二发声单元22设置于所述第二盆架24的内侧，所述第一盆架23固定于所述支撑部1111，所述主体壁111还设有位于所述第一发声单元21上方的第一通孔1112、位于所述第二发声单元22上方的第二通孔1113、以及分隔所述第一通孔1112和所述第二通孔1113的分隔壁1114，所述分隔壁1114包括形成所述前腔1021的围壁11141，所述第二盆架24固定于所述围壁11141，所述围壁11141设有断口X，所述分隔壁1114还包括自所述断口X向远离所述围壁11141的方向延伸的且相对间隔设置的一对延伸壁11142，所述一对延伸壁11142形成所述连接通道1022且所述一对延伸壁11142之间的间隔距离在自所述断口X向远离所述围壁11141的方向上逐渐增大。
所述公共通道103包括形成于所述屏幕12和所述主体壁111之间的第一部分1031、以及形成于所述侧壁112内的第二部分1032，所述第一部分1031和所述第二部分1032之间设有阻尼网布3。
所述扬声器2还包括磁路系统25，所述第一盆架23和所述第二盆架24固定于所述磁路系统25，所述磁路系统25设有第一磁间隙251和第二磁间隙252，所述第一发声单元21包括第一振膜211和驱动所述第一振膜211振动发声的第一音圈212，所述第二发声单元22包括第二振膜221和驱动所述第二振膜221振动发声的第二音圈222，所述第一音圈212插设于所述第一磁间隙251，所述第二音圈222插设于所述第二磁间隙252。
本发明的具有发声功能的电子设备，其中，导声通道包括将第一发声单元发出的声音导出的第一通道、将第二发声单元发出的声音导出的且与第一通道分隔的第二通道、以及将第一通道和第二通道共同连通到电子设备外部的公共通道，第二通道包括第二发声单元的前腔、以及连通前腔和公共通道的连接通道，连接通道设置成号角结构，第一发声单元发出的低音和第二发声单元发出的高音先各自经过独立分隔的通道后再在公共通道汇合，同时第二发声单元发出的高音还会经过第二通道的前腔和设置成号角结构的连接通道的扩音，从而提升了高音效果，并且最大限度地保证了低音出声的通畅。
以上所述的仅是本发明的实施方式，在此应当指出，对于本发明领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出改进，但这些均属于本发明的保护范围。

Claims (5)

  1. 一种具有发声功能的电子设备，其包括壳体结构件和安装于所述壳体结构件上的扬声器，所述扬声器包括同轴设置的第一发声单元和第二发声单元，所述第一发声单元环绕设置于所述第二发声单元的外侧，所述第一发声单元用于低音发声，所述第二发声单元用于高音发声，所述壳体结构件设有将所述扬声器发出的声音导出到电子设备外部的导声通道，其特征在于，所述导声通道包括将所述第一发声单元发出的声音导出的第一通道、将所述第二发声单元发出的声音导出的且与所述第一通道分隔的第二通道、以及将所述第一通道和所述第二通道共同连通到电子设备外部的公共通道，所述第二通道包括所述第二发声单元的前腔、以及连通所述前腔和所述公共通道的连接通道，所述连接通道设置成号角结构。
  2. 根据权利要求1所述的具有发声功能的电子设备，其特征在于，所述壳体结构件包括中框和盖接于所述中框上的屏幕，所述中框和所述屏幕共同形成所述导声通道。
  3. 根据权利要求2所述的具有发声功能的电子设备，其特征在于，所述中框包括安装所述扬声器的主体壁和与所述主体壁连接的且位于所述扬声器的侧方的侧壁，所述主体壁设有向远离所述屏幕的方向延伸的支撑部，所述扬声器包括第一盆架和第二盆架，所述第一盆架环绕设置于所述第二盆架的外侧，所述第一发声单元设置于所述第一盆架和所述第二盆架之间，所述第二发声单元设置于所述第二盆架的内侧，所述第一盆架固定于所述支撑部，所述主体壁还设有位于所述第一发声单元上方的第一通孔、位于所述第二发声单元上方的第二通孔、以及分隔所述第一通孔和所述第二通孔的分隔壁，所述分隔壁包括形成所述前腔的围壁，所述第二盆架固定于所述围壁，所述围壁设有断口，所述分隔壁还包括自所述断口向远离所述围壁的方向延伸的且相对间隔设置的一对延伸壁，所述一对延伸壁形成所述连接通道且所述一对延伸壁之间的间隔距离在自所述断口向远离所述围壁的方向上逐渐增大。
  4. 根据权利要求3所述的具有发声功能的电子设备，其特征在于，所述公共通道包括形成于所述屏幕和所述主体壁之间的第一部分、以及形成于所述侧壁内的第二部分，所述第一部分和所述第二部分之间设有阻尼网布。
  5. 根据权利要求3所述的具有发声功能的电子设备，其特征在于，所述扬声器还包括磁路系统，所述第一盆架和所述第二盆架固定于所述磁路系统，所述磁路系统设有第一磁间隙和第二磁间隙，所述第一发声单元包括第一振膜和驱动所述第一振膜振动发声的第一音圈，所述第二发声单元包括第二振膜和驱动所述第二振膜振动发声的第二音圈，所述第一音圈插设于所述第一磁间隙，所述第二音圈插设于所述第二磁间隙。
PCT/CN2022/125142 2022-08-30 2022-10-13 具有发声功能的电子设备 WO2024045282A1 (zh)

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CN209861159U (zh) * 2019-07-31 2019-12-27 Tcl通力电子（惠州）有限公司 一种同轴扬声器

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