WO2020124866A1 - 音频输出模块和头戴式智能终端 - Google Patents

音频输出模块和头戴式智能终端 Download PDF

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Publication number
WO2020124866A1
WO2020124866A1 PCT/CN2019/081174 CN2019081174W WO2020124866A1 WO 2020124866 A1 WO2020124866 A1 WO 2020124866A1 CN 2019081174 W CN2019081174 W CN 2019081174W WO 2020124866 A1 WO2020124866 A1 WO 2020124866A1
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WIPO (PCT)
Prior art keywords
sound
audio output
output module
cavity
fixing structure
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PCT/CN2019/081174
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English (en)
French (fr)
Inventor
李然
曹卉
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深圳市嘉然创新科技有限公司
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Publication of WO2020124866A1 publication Critical patent/WO2020124866A1/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
    • 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 technical field of wearable products, in particular to an audio output module and a head-mounted smart terminal.
  • Audio output modules of head-mounted smart terminal products commonly include a closed-type traditional sound-emitting unit and a bone conduction sound-emitting unit.
  • the closed traditional sound-generating unit is generally an ordinary micro-speaker unit. Due to the bass effect generated by the closed ear canal, the listening experience is pleasant, but there are hidden dangers of traffic safety that have been verified in mobile scenes, such as wearing closed headphones for running and cycling Traffic accidents. Moreover, after medical verification, wearing closed earphones for a long time and using them at a higher volume may cause temporary hearing loss or even irreversible hearing nerve damage to the user. The transitional use of headphones in various scenarios has become a social issue.
  • the bone conduction technology and bone conduction earphone invented based on hearing impairment and military use, because its technical nature is not to hear sound, but is vibrated by the bone conduction sounding unit vibrator, through the tight benzhan with the facial skull, The sound waves directly pass through the cranial pathway to cause the perilymph to fluctuate accordingly, and excite the cochlea spiral to produce hearing. It is not traditional hearing that relies on sound waves to propel air to vibrate the tympanic membrane. Because the sound wave transmission path is very well known, some users in the clinical practice of medicine have vertigo and vomiting caused by nerve tension caused by bone conduction products.
  • the present invention provides an audio output module, the audio output module includes a speaker and a sound cavity structure, the sound cavity structure includes an independent sound cavity, the speaker is placed in an independent sound cavity;
  • the audio output module further includes a sound guide cavity and a sound output port, the sound output port communicates with the outside, and the sound guide cavity communicates with the independent sound cavity and the sound output port, respectively.
  • the bass resonance frequency f0 of the single speaker is above 1000hz
  • the audio output module provided by the present invention places the speaker in an independent sound cavity, and the structure of the independent sound cavity can make the bass sound
  • the resonance frequency produces K)
  • the listening experience at around 300hz greatly enhances the bass effect, allowing users to feel a stronger bass effect.
  • the sound outlet is connected to the independent sound cavity through the sound guide cavity, forming a sound propagation channel, which can guide the sound to the ear without directly touching the ear, and avoids discomfort caused by ear closure.
  • the sound outlet is provided below the independent sound cavity; the sound emission direction of the speaker and the sound propagation direction at the sound outlet are non-parallel two directions.
  • the sound emission direction of the speaker and the direction of the sound guide cavity at the sound outlet are two non-parallel directions.
  • the sound cavity structure further includes a filling chamber, and the independent sound cavity communicates with the filling chamber.
  • a filling material is provided in the filling chamber, and the filling material is a bass-enhanced air absorbing material.
  • the filler material is glass fiber or carbon fiber filler material, the filler material is a porous structure on the surface.
  • the sound outlet also has a waterproof and dustproof structure.
  • the present invention also provides a head-mounted smart terminal, including a left ear fixing structure, a right ear fixing structure, and the audio output module as described above; the audio output module includes two speakers, and two speakers They are located in the left ear fixing structure and the right ear fixing structure, respectively.
  • the head-mounted smart terminal is smart glasses
  • the smart glasses include a lens, a frame for fixing the lens, and two temples
  • the temple includes a left temple and a right temple
  • the left temple and The right temple is a left ear fixing structure and a right ear fixing structure respectively
  • the left ear fixing structure is provided with a shock absorbing foam between the shell near the head and the speaker
  • the right ear fixing structure is close to the head
  • a shock-absorbing foam is provided between the casing and the speaker.
  • the direction of the audio output module near the sound guide cavity at the sound outlet is directed to the setting of wearing the ear canal.
  • the present invention has the following beneficial effects:
  • the conventionally designed ordinary micro-speaker unit, the bass frequency f0 of an individual speaker is above 1000hz
  • the audio output module provided by the present invention places the speaker in an independent sound cavity
  • the structure of the independent sound cavity can set the bass frequency K ) Going to about 300hz, it greatly enhances the bass effect, allowing users to produce stronger bass sounds.
  • the sound outlet is connected to the independent sound cavity through the sound guide cavity, forming a sound propagation channel, without directly touching the ear, and avoiding discomfort caused by ear closure.
  • FIG. 1 is a schematic structural diagram of an audio output module according to Embodiment 1 of the present invention.
  • FIG. 2 is an exploded view of an audio output module according to Embodiment 1 of the present invention.
  • FIG. 3 is another exploded view of an audio output module according to Embodiment 1 of the present invention.
  • FIG. 4 is a first cross-sectional view of a sound cavity structure of an audio output module
  • FIG. 5 is a second cross-sectional view of an audio output module (excluding speakers);
  • FIG. 6 is an exploded view of a head-mounted smart terminal according to Embodiment 2 of the present invention.
  • 101-independent sound cavity 101-independent sound cavity, 102-filling chamber, 103-sound guide cavity, 104-sound outlet, 105-communication part, 11-sound cavity shell, 12-sound cavity cover, 13-waterproof and dustproof structure , 14-speaker, 21-left temple body, 22-left temple cover, 31-right temple body, 32-right temple cover, 40-circuit board, 51-battery module, 52-charging board, 60- FPC wire, 71-frame body, 72-slot cover, 80-lens.
  • the audio output module includes a sound generating unit and a sound cavity structure.
  • the sounding unit is a miniature speaker or a miniature speaker.
  • the sound generating unit is a micro-speaker 14.
  • the sound cavity structure includes an independent sound cavity 101, and the speaker 14 is placed in the independent sound cavity 101.
  • the audio output module further includes a sound guide cavity 103 and a sound outlet 104.
  • the sound outlet 104 communicates with the outside, and the sound guide cavity 103 communicates with the independent sound cavity 101 and the sound outlet 104, respectively.
  • the bass frequency K) of a separate speaker 14 is above 100 Hz.
  • the audio output module places the speaker 14 in an independent sound cavity 101.
  • the structure of the independent sound cavity 101 can make the bass frequency f0 Going to around 300hz, the bass effect is greatly enhanced, allowing the user to produce a stronger bass sound.
  • the sound outlet 104 is connected to the independent sound cavity 101 via the sound guide cavity 103 to form a sound propagation channel, which can guide the sound to the ear without directly touching the ear, thereby avoiding discomfort caused by ear closure.
  • the sound outlet 104 is disposed below the independent sound chamber 101, and the sound outlet 104 is disposed near the ear canal of the user, as shown in FIG. 4.
  • the sound guiding cavity 103 has directivity, which leads the sound from the independent sound cavity 101 to the sound outlet 104 in a certain direction, and the sound guiding cavity 103 makes the sound have certain directivity when coming out of the sound outlet 104.
  • the direction of the sound guide cavity 103 near the sound outlet 104 is directed to the ear canal of the wearer of the head-mounted smart terminal product, and the sound is directed to the ear canal when coming out of the sound outlet 104, which can ensure the most sound transmission Good path, improve the user's voice experience, and strengthen protection to enhance user privacy.
  • the speaker 14 is disposed in the independent sound cavity 101, and the initial sound emission direction of the speaker 14 and the final sound propagation direction are two non-parallel directions. This causes the sound to be routed to the sound guide cavity 103 and the sound outlet 104 after being emitted from the speaker 14.
  • the final sound propagation direction of the audio output module is the sound propagation direction at the sound outlet 104, so the vibration sounding direction of the speaker 14 and the sound propagation direction at the sound outlet 104 The two directions are non-parallel.
  • the sound guide cavity 103 has directivity, the sound propagation direction at the sound outlet 104 is determined by the direction of the sound guide cavity 103, and the vibration sounding direction of the speaker 14 and the direction of the sound guide cavity 103 are two non-parallel directions.
  • the final sound propagation direction of the audio output module is the direction close to the sound guide cavity 103 at the sound outlet 104.
  • the sound generation direction of the speaker 14 is approximately 90 degrees to the direction of the sound guide cavity 103 near the sound outlet 104.
  • the sound cavity structure further includes a filling chamber 102, and the independent sound cavity 101 communicates with the filling chamber 102.
  • the speaker 14 is placed in the independent sound cavity 101.
  • the filling chamber 102 and the independent sound cavity 101 are formed by a sound cavity housing 11 and a sound cavity cover 12.
  • the sound cavity housing 11 has a containing cavity
  • the sound cavity housing 11 has a partition inside
  • the partition divides the containing cavity into a first cavity and a second cavity
  • the sound cavity cover 12 is used to close the opening of the containing cavity And make the first chamber and the second chamber closed to other spaces, so that the first chamber and the second chamber respectively form an independent sound chamber 101 and a filling chamber 102.
  • the sound cavity cover 12 and the sound cavity housing 11 are respectively provided with mutually matched buckling structures, and the sound cavity cover 12 is buckled on the sound cavity housing 11.
  • the independent sound chamber 101 and the filling chamber 102 are not completely partitioned, and a communication portion 105 is also provided between the independent sound chamber 101 and the filling chamber 102.
  • the communicating portion 105 is an elongated slit.
  • the shape of the communicating portion 105 is not limited to this, and may be other shapes.
  • the filling chamber 102 communicates with the independent sound chamber 101, and the filling chamber 102 constitutes a low-frequency reflective cavity.
  • the filling chamber 102 actively uses the low-frequency components in the audio to adjust the reflected sound wave to a useful low-frequency output of inverted phase.
  • a more preferred solution is that a filling material is provided in the filling chamber 102, and the filling material is a bass enhancement type air absorption material.
  • the filler material is a glass fiber or carbon fiber filler material, and the filler material has a surface porous hole structure.
  • the principle is that the filling material is a surface porous hole structure. Due to the porous hole airbag structure of the filling material, it can also effectively adsorb air molecules and expand the volume of the sound cavity structure, which can increase the volume of the internal cavity by 20-30% to increase the low frequency effect. .
  • waterproof and dustproof structure 13 at the sound outlet 104, and the user prevents dust and water from entering the sound cavity structure.
  • the waterproof and dustproof structure 13 is a mesh structure.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1
  • the present invention also provides a head-mounted smart terminal, which includes a left ear fixing structure and a right ear A fixed structure, and the audio output module described above; the audio output module includes two speakers 14 and two speakers 14 are respectively located in the left ear fixing structure and the right ear fixing structure.
  • the left ear fixing structure and the right ear fixing structure may be hung on the user's ear, or may be hung on the user's ear.
  • the head-mounted smart terminal is fixed by means of the user's ear. It should be noted that it may be further fixed by means of the head, or by means of the bridge of the user's nose.
  • the head-mounted smart terminal is smart glasses.
  • the smart glasses may be VR glasses.
  • the smart glasses include a lens 80 and a frame.
  • the frame includes a frame for fixing the lens 80, and two temples.
  • the temple includes a left temple and a right temple arranged symmetrically.
  • the temple can be a foldable structure or a structure that cannot be folded.
  • the left temple includes a left temple body 21 and a left temple cover 22. A space is accommodated between the left temple body 21 and the left temple cover 22.
  • the speaker 14 is located in the accommodation space.
  • the right temple includes a right temple body 31 and a right temple cover 32, a space is accommodated between the right temple body 31 and the right temple cover 32, and the speaker 14 is located in the accommodation space.
  • the left temple leg and the right temple leg are a left ear fixing structure and a right ear fixing structure, respectively, and the temple is erected above the user's ear, and further helps to fix the bridge of the nose.
  • a shock absorbing foam is provided between the housing near the head of the left ear fixing structure and the speaker 14, and a shock absorbing foam is provided between the housing near the head of the right ear fixing structure and the speaker 14. Foam.
  • the shock-absorbing foam can alleviate the discomfort caused to the user when the frame is resonating.
  • the head-mounted smart terminal further includes a circuit board 40 and a power supply part, and the power supply part includes a charging board 52 and a battery module 51.
  • the battery module 51 is a lithium battery module 51 having a charge and discharge function.
  • the two speakers 14, provided inside the left temple and the right temple, are electrically connected to the circuit board 40 and the power supply part, respectively.
  • the head-mounted smart terminal also has an FPC wire 60 embedded in the lens frame, and the two speakers 14 are electrically connected to the circuit board 40 and the power supply part through the FPC wire 60, respectively.
  • the lens frame includes a lens frame body 71, a slot is provided on the lens frame body 71, the FPC wire 60 is embedded in the slot, and a slot cover 72 is provided outside the slot.
  • the power supply part and the circuit board 40 are respectively located inside the two temples.
  • the head-mounted smart terminal further includes an audio control module. Audio control module, you can open Shutdown is used to wake up the voice assistant and make and receive calls, as well as control song switching and volume control.
  • the audio signal may be received after the audio source is received in a wireless manner and then played back and output.
  • a short-distance wireless transmission unit such as a Bluetooth module is also provided.
  • the wireless transmission unit can be connected to a sound source device, such as a mobile phone or other music player.
  • the present invention has the following beneficial effects:
  • the conventionally designed ordinary micro-speaker unit, the bass frequency fO of the individual speaker is above 1000hz
  • the audio output module provided by the present invention places the speaker in an independent sound cavity, and the structure of the independent sound cavity can set the bass frequency K) Going to about 300hz, which greatly enhances the bass effect, allowing users to produce stronger bass sounds.
  • the sound outlet is connected to the independent sound cavity through the sound guide cavity, forming a sound propagation channel, which can guide the sound to the ear.
  • the sound guide cavity has directivity, and does not need to directly touch the ear, which avoids discomfort caused by ear closure.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Headphones And Earphones (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

本发明公开了一种音频输出模块，包括扬声器和音腔结构，音腔结构包括独立音腔，扬声器置于独立音腔内；音频输出模块还包括导音腔与出音口，出音口与外部连通，导音腔分别与独立音腔和出音口连通。本发明还公开了一种头戴式智能终端，包括左耳固定结构、右耳固定结构、以及如上所述的音频输出模块；音频输出模块包括分别位于左耳固定结构和右耳固定结构内的两个扬声器。本发明所提供的音频输出模块，将扬声器置于独立音腔，其独立音腔的结构设置增强了低音效果，使用户听感上产生更强的重低音。同时出音口经导音腔与独立音腔相连接，构成了声音传播通道，不需要直接接触耳朵。

Description

音频输出模块和头戴式智能终端 技术领域
[0001] 本发明涉及穿戴式产品技术领域， 特别涉及一种音频输出模块和头戴式智能终 端。
背景技术
[0002] 头戴式智能终端产品的音频输出模块常用的有封闭式传统发声单元和骨传导发 声单元。
[0003] 封闭式传统发声单元一般为普通微型扬声器单元， 由于封闭耳道产生的低音效 果， 听感愉悦， 但是在移动场景下有已验证的交通安全隐患， 比如佩戴封闭式 耳机跑步与骑自行车造成的交通事故。 而且经过医学验证， 长期佩戴封闭式耳 机， 在较高音量下使用， 会造成用户暂时性失聪甚至不可逆的听觉神经损伤。 各种场景下对耳机的过渡使用以成为一个社会性问题。
[0004] 而基于听觉障碍以及军事用途而发明的骨传导技术以及骨传导耳机， 由于其技 术本质并非听到声音， 而是由骨传导发声单元震子震动， 通过与面部颅骨的紧 贝占， 声波直接经颅骨途径使外淋巴发生相应波动， 并激动耳蜗的螺旋器产生听 觉。 并非传统的听力依赖声波推动空气振动鼓膜产生。 由于声波传递途径非常 人所熟知， 所以在医学临床实际中有部分用户产生因骨传导产品产生的神经紧 张造成的眩晕症与呕吐症。 而大部分人对此种传递声音方式比较好奇， 不过在 长时间佩戴中会因为震子天然低频不足造成无法正常欣赏音乐， 这与骨传导技 术的初衷有关， 因为该技术解决的重点问题在于传递中高频声音来帮助听觉障 碍人士以及部分军事场景对开放耳道需要听到不同渠道的命令来设计的。
[0005] 如何既保证用户在开放耳道的场景下， 体验到封闭耳道的音质效果， 而又避免 封闭式耳道带来的安全隐患与外耳道的压迫感与听觉损伤风险， 同时保证用户 在利用该设备进行语音通话亦或享受音乐时的私密性要求， 是本领域技术人员 所要解决的问题。
发明概述 技术问题
问题的解决方案
技术解决方案
[0006] 为了解决以上问题， 本发明提供了一种音频输出模块， 所述音频输出模块包括 扬声器和音腔结构， 所述音腔结构包括独立音腔， 所述扬声器置于独立音腔内 ; 所述音频输出模块还包括导音腔与出音口， 所述出音口与外部相连通， 所述 导音腔分别与独立音腔和出音口连通。
[0007] 传统设计的普通微型扬声器单元， 单体扬声器的低音共振频率 f0在 lOOOhz以上 ， 本发明所提供的音频输出模块， 将扬声器置于独立音腔， 其独立音腔的结构 设置可以使低音共振频率产生 K）在 300hz左右的听感体验， 极大的增强了低音效 果， 使用户感受到更强的低音效果。 同时出音口经导音腔与独立音腔相连接， 构成了声音传播通道， 可以将声音导向耳朵， 不需要直接接触耳朵， 避免了对 耳朵封闭造成不适感。
[0008] 进一步的， 所述出音口设置在独立音腔的下方； 所述扬声器的发声方向和所述 出音口处的声音传播方向为非平行的两个方向。
[0009] 进一步的， 所述扬声器的发声方向与所述出音口处导音腔的方向为非平行的两 个方向。
[0010] 进一步的， 所述音腔结构还包括填充室， 所述独立音腔与填充室之间连通。
[0011] 进一步的， 所述填充室内设置有填充材料， 所述填充材料为低音增强型空气吸 附材料。
[0012] 进一步的， 所述填充材料为玻纤或碳纤类填充材料， 所述填充材料为表面多孔 洞结构。
[0013] 进一步的， 所述出音口处还具有防水防尘结构。
[0014] 本发明还提供了一种头戴式智能终端， 包括左耳固定结构、 右耳固定结构、 以 及如上所述的音频输出模块； 所述音频输出模块包括两个扬声器， 且两个扬声 器分别位于左耳固定结构和右耳固定结构内。
[0015] 进一步的， 所述头戴式智能终端为智能眼镜， 所述智能眼镜包括镜片、 用于固 定镜片的镜框、 以及两个镜腿， 所述镜腿包括左镜腿和右镜腿； 所述左镜腿和 右镜腿分别为左耳固定结构和右耳固定结构； 所述左耳固定结构的靠近头部的 壳体和扬声器之间设置有减震泡棉， 所述右耳固定结构的靠近头部的壳体和扬 声器之间设置有减震泡棉。
[0016] 进一步的， 所述音频输出模块靠近出音口处的导音腔的方向指向佩戴着耳道设 置。
发明的有益效果
有益效果
[0017] 与现有技术相比， 本发明具有如下有益效果：
[0018] 传统设计的普通微型扬声器单元， 单独扬声器的低音频率 f0在 lOOOhz以上， 本 发明所提供的音频输出模块， 将扬声器置于独立音腔， 其独立音腔的结构设置 可以使低音频率 K）去到 300hz左右， 极大的增强了低音效果， 使用户听感上产生 更强的重低音。 同时出音口经导音腔与独立音腔相连接， 构成了声音传播通道 ， 不需要直接接触耳朵， 避免了对耳朵封闭造成不适感。
对附图的简要说明
附图说明
[0019] 图 1为本发明实施例一所述的一种音频输出模块的结构示意图；
[0020] 图 2为本发明实施例一所述的一种音频输出模块的爆炸图；
[0021] 图 3为本发明实施例一所述的一种音频输出模块的另一个爆炸图；
[0022] 图 4为音频输出模块的音腔结构的第一剖视图；
[0023] 图 5为音频输出模块 （不包含扬声器） 的第二剖视图；
[0024] 图 6为本发明实施例二所述的一种头戴式智能终端的爆炸图。
[0025] 附图标记：
[0026] 101-独立音腔、 102 -填充室、 103 -导音腔、 104 -出音口、 105 -连通部、 11-音腔 壳体、 12 -音腔盖子、 13 -防水防尘结构、 14 -扬声器、 21-左镜腿主体、 22 -左镜腿 盖子、 31-右镜腿主体、 32 -右镜腿盖子、 40 -电路板、 51 -电池模块、 52 -充电板、 60-FPC导线、 71 -镜架主体、 72 -槽盖、 80-镜片。
发明实施例 本发明的实施方式
[0027] 下面结合附图和实施例， 对本发明的一种应用于头戴式智能终端的音频输出模 块和头戴式智能终端的结构和作用原理作进一步说明：
[0028] 实施例一：
[0029] 如图 1~图5所示， 本具体实施例提供了一种音频输出模块， 音频输出模块包括 发声单元和音腔结构。 发声单元为微型扬声器或微型喇叭。 如图 2~图3所示， 发 声单元为微型扬声器 14, 音腔结构包括独立音腔 101， 扬声器 14置于独立音腔 10 1内。 音频输出模块还包括导音腔 103与出音口 104。 出音口 104与外部相连通， 导音腔 103分别与独立音腔 101和出音口 104连通。 传统设计的发声单元， 单独扬 声器 14的低音频率 K）在 lOOOhz以上， 本发明所提供的音频输出模块， 将扬声器 14 置于独立音腔 101， 其独立音腔 101的结构设置可以使低音频率 f0去到 300hz左右 ， 极大的增强了低音效果， 使用户听感上产生更强的重低音。 同时出音口 104经 导音腔 103与独立音腔 101相连接， 构成了声音传播通道， 可以将声音导向耳朵 ， 不需要直接接触耳朵， 避免了对耳朵封闭造成不适感。
[0030] 作为优选的方案， 出音口 104设置在独立音腔 101的下方， 出音口 104靠近用户 耳道设置， 如图 4所示。 导音腔 103具有方向性， 其将声音从独立音腔 101沿一 定方向导出到出音口 104, 导音腔 103使声音从出音口 104出来时具有一定指向性 。 优选的是， 靠近出音口 104处的导音腔 103的方向指向头戴式智能终端产品佩 戴者的耳道， 声音从出音口 104出来时被导向耳道， 这可以保证声音传播的最佳 路径， 提高用户的声音感受体验， 以及加强保护增强用户的隐私。 在实际的声 场测试中， 佩戴头戴式智能终端产品的用户， 会感受到很好的声场体验： 环绕 立体声的效果犹如坐在电影院的沉浸式环绕立体声。 由于声音能量的衰减与距 离呈指数级反比关系， 所以 1米范围以外的其他人， 基本听不到头戴式智能终端 产品的声音。
[0031] 作为优选的方案， 扬声器 14设置在独立音腔 101内， 所述扬声器 14的初始发声 方向与最终声音传播方向为非平行的两个方向。 这使声音从扬声器 14发出后需 要绕至导音腔 103和出音口 104。 音频输出模块的最终声音传播方向是出音口 104 处的声音传播方向， 因此扬声器 14的振动发声方向和出音口 104处的声音传播方 向为非平行的两个方向。 导音腔 103具有方向性， 出音口 104处的声音传播方向 由导音腔 103的方向决定， 扬声器 14的振动发声方向与所述导音腔 103的方向为 非平行的两个方向。 当导音腔 103的方向指向非直线时， 音频输出模块的最终声 音传播方向为靠近出音口 104处的导音腔 103的方向。 更加优选的方案是， 扬声 器 14的发声方向与靠近出音口 104处的导音腔 103的方向大致呈 90度。
[0032] 音腔结构还包括填充室 102, 所述独立音腔 101与填充室 102之间连通。 扬声器 1 4置于独立音腔 101内。 更具体的， 如图 2~图3所示， 填充室 102和独立音腔 101是 由音腔壳体 11跟音腔盖子 12形成。 音腔壳体 11具有容置腔， 音腔壳体 11内部具 有隔板， 隔板将容置腔分割为第一腔室和第二腔室， 音腔盖子 12用于封闭容置 腔的开口， 并使第一腔室和第二腔室相对其他空间封闭， 由此第一腔室和第二 腔室分别构成了独立音腔 101与填充室 102。 音腔盖子 12和音腔壳体 11上分别设 置由相互配合的扣位结构， 音腔盖子 12扣合在音腔壳体 11上。 独立音腔 101与填 充室 102之间并未完全隔断， 在独立音腔 101与填充室 102之间还设置有连通部 10 5。 如图 5所示， 连通部 105为长条形狭缝。 但连通部 105的形状不限于此， 还可 以为其它形状。
[0033] 填充室 102与独立音腔 101连通， 填充室 102构成了低频反射式腔体， 填充室 102 积极地利用音频中的低频成分， 将反射后的声波调整为倒相的有用的低频输出
[0034] 更加优选地方案是， 在填充室 102内设置有填充材料， 所述填充材料为低音增 强型空气吸附材料。 通过在填充室 102内部设置填充材料能更大程度上增加低音 效果。 进一步的， 所述填充材料为玻纤或碳纤类填充材料， 所述填充材料为表 面多孔洞结构。 其原理是填充材料为表面多孔洞结构， 由于填充材料的多孔洞 气囊结构， 还可以有效的吸附空气分子， 扩充音腔结构的体积， 可以使得内腔 增加 20-30%的体积以增加低频效果。
[0035] 在出音口 104处还具有防水防尘结构 13， 用户防止灰尘和水进入到音腔结构内 部。 优选地， 防水防尘结构 13为网状结构。
[0036] 实施例二：
[0037] 如图 6所示， 本发明还提供了一种头戴式智能终端， 包括左耳固定结构、 右耳 固定结构、 以及如上所述的音频输出模块； 所述音频输出模块包括两个扬声器 1 4, 且两个扬声器 14分别位于左耳固定结构和右耳固定结构内。 左耳固定结构和 右耳固定结构可以是挂在用户的耳朵处， 或者是架在用户的耳朵处。 更进一步 的， 头戴式智能终端借助于用户的耳朵固定， 需要说明的是， 有可能还进一步 借助头部实现进一步固定， 或者借助于用户的鼻梁实现进一步的固定。
[0038] 在其中一个具体的实施例中， 头戴式智能终端为智能眼镜。 智能眼镜可以为 V R眼镜。 所述智能眼镜包括镜片 80、 以及镜架。 所述镜架包括用于固定镜片 80的 镜框、 以及两个镜腿， 镜腿包括对称设置的左镜腿和右镜腿。 镜腿可以是可折 叠结构， 或者是不能折叠的结构。 如图 6所示， 左镜腿包括左镜腿主体 21和左镜 腿盖子 22, 左镜腿主体 21和左镜腿盖子 22之间容置空间， 所述扬声器 14位于容 置空间内。 右镜腿包括右镜腿主体 31和右镜腿盖子 32， 右镜腿主体 31和右镜腿 盖子 32之间容置空间， 所述扬声器 14位于容置空间内。
[0039] 所述左镜腿和右镜腿分别为左耳固定结构和右耳固定结构， 镜腿架设在用户的 耳朵上方， 并进一步籍助鼻梁得以固定。
[0040] 所述左耳固定结构的靠近头部的壳体和扬声器 14之间设置有减震泡棉， 所述右 耳固定结构的靠近头部的壳体和扬声器 14之间设置有减震泡棉。 减震泡棉可以 缓解镜框产生共振时给用户造成佩戴上的不适感。
[0041]
头戴式智能终端还包括电路板 40和供电电源部分， 供电电源部分包括充电板 52 和电池模块 51。 例如， 电池模块 51为具有可充放电功能的锂电池模块 51。
[0042] 设置在左镜腿和右镜腿内部的两个扬声器 14, 分别与电路板 40和供电电源部分 电连接。 头戴式智能终端还具有埋设在镜框内的 FPC导线 60, 两个扬声器 14分别 通过 FPC导线 60电连接电路板 40和供电电源部分。 具体的， 镜架包括镜架主体 71 ， 镜架主体 71上设置有槽位， FPC导线 60埋设在槽位内， 槽位外部设置有扣合的 槽盖 72。
[0043] 因为空间尺寸的限制， 在本实施例中， 供电电源部分和电路板 40分别位于两个 镜腿内部。
[0044] 可以理解的是， 头戴式智能终端还包括音频控制模块。 音频控制模块， 可以开 关机， 用于唤醒语音助理以及接打电话， 以及还能控制切换歌曲以及调控音量 的大小。
[0045] 音频信号可以是采用无线方式接收音源后再播放输出， 采用无线方式时， 还具 有蓝牙模块等短距离无线传输单元。 通过无线传输单元可以外接音源设备， 譬 如手机、 或者其他音乐播放器。
[0046] 与现有技术相比， 本发明具有如下有益效果：
[0047] 传统设计的普通微型扬声器单元， 单独扬声器的低音频率 fO在 lOOOhz以上， 本 发明所提供的音频输出模块， 将扬声器置于独立音腔， 其独立音腔的结构设置 ， 可以使低音频率 K）去到 300hz左右， 极大的增强了低音效果， 使用户听感上产 生更强的重低音。 同时出音口经导音腔与独立音腔相连接， 构成了声音传播通 道， 可以将声音导向耳朵， 导音腔具有指向性， 不需要直接接触耳朵， 避免了 对耳朵封闭造成不适感。
[0048] 最后需要说明的是， 以上实施例仅用以说明本发明实施例的技术方案而非对其 进行限制， 尽管参照较佳实施例对本发明实施例进行了详细的说明， 本领域的 普通技术人员应当理解依然可以对本发明实施例的技术方案进行修改或者等同 替换， 而这些修改或者等同替换亦不能使修改后的技术方案脱离本发明实施例 技术方案的范围。

Claims

权利要求书
[权利要求 1] . 一种音频输出模块， 其应用于头戴式智能终端， 其特征在于， 所述 音频输出模块包括扬声器和音腔结构， 所述音腔结构包括独立音腔， 所述扬声器置于独立音腔内； 所述音频输出模块还包括导音腔与出音 口， 所述出音口与外部相连通， 所述导音腔分别与独立音腔和出音口 连通。
[权利要求 2] 如权利要求 1所述的音频输出模块， 其特征在于， 所述出音口设置在 独立音腔的下方； 所述扬声器的发声方向和所述出音口处的声音传播 方向为非平行的两个方向。
[权利要求 3] 如权利要求 2所述的音频输出模块， 其特征在于， 所述扬声器的发声 方向与所述出音口处导音腔的方向为非平行的两个方向。
[权利要求 4] 如权利要求 1所述的音频输出模块， 其特征在于， 所述音腔结构还包 括填充室， 所述独立音腔与填充室之间连通。
[权利要求 5] 如权利要求 4所述的音频输出模块， 其特征在于， 所述填充室内设置 有填充材料， 所述填充材料为低音增强型空气吸附材料。
[权利要求 6] 如权利要求 5所述的音频输出模块， 其特征在于， 所述填充材料为玻 纤或碳纤类填充材料， 所述填充材料为表面多孔洞结构。
[权利要求 7] 如权利要求 1所述的音频输出模块， 其特征在于， 所述出音口处还具 有防水防尘结构。
[权利要求 8] 种头戴式智能终端， 其特征在于， 包括左耳固定结构、 右耳固定结 构、 以及如权利要求 1~7任一项所述的音频输出模块； 所述音频输出 模块包括两个扬声器， 且两个扬声器分别位于左耳固定结构和右耳固 定结构内。
[权利要求 9] 如权利要求 8所述的头戴式智能终端， 其特征在于， 所述头戴式智能 终端为智能眼镜， 所述智能眼镜包括镜片、 用于固定镜片的镜框、 以 及两个镜腿， 所述镜腿包括左镜腿和右镜腿； 所述左镜腿和右镜腿分 别为左耳固定结构和右耳固定结构； 所述左耳固定结构的靠近头部的 壳体和扬声器之间设置有减震泡棉， 所述右耳固定结构的靠近头部的 壳体和扬声器之间设置有减震泡棉。
[权利要求 10] 如权利要求 8所述的头戴式智能终端， 其特征在于， 所述音频输出模 块靠近出音口处的导音腔的方向指向佩戴着耳道设置。
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