CN108429988A - A kind of Ultrathin speaker structure - Google Patents
A kind of Ultrathin speaker structure Download PDFInfo
- Publication number
- CN108429988A CN108429988A CN201810389994.9A CN201810389994A CN108429988A CN 108429988 A CN108429988 A CN 108429988A CN 201810389994 A CN201810389994 A CN 201810389994A CN 108429988 A CN108429988 A CN 108429988A
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- China
- Prior art keywords
- full
- leading note
- speaker
- frequency trumpet
- sound basin
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- 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
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
The invention discloses a kind of Ultrathin speaker structures, including leading note speaker, Full-frequency trumpet and high-pitched speaker, Full-frequency trumpet includes frame, magnet steel, voice coil, magnet, magnetic conductive board, sound basin, dust cap and centring disk, the reverse side of centring disk is bonded in groove, the front of centring disk is fixedly connected with sound basin, the V-shaped structure of sound basin, arc ring is provided on sound basin, pass through being used cooperatively Full-frequency trumpet and high-pitched speaker, keep the sound of entire Ultrathin speaker more balanced, effect same can be reached with large volume speaker sound quality on the market.
Description
Technical field
The present invention relates to sound-box device fields, and in particular to a kind of Ultrathin speaker structure.
Background technology
With the development of science and technology, portable loudspeaker box is because it is convenient for carrying, and multiple functional feature and be increasingly becoming society
A kind of product all the fashion in living, and also constantly developing over time.It is produced as portable speaker
Product, because practicability need to be met, it is desirable that speaker is small and it is necessary to have enough power outputs, and low frequency behavior is outstanding.
In this way, must just use the typhon monomer of high power, big stroke, loudspeaker are often very thick and there is still a need for bigger machineries
Installation site is installed, and in this way, leaving inside speaker utilizable space for regard to very little and causing the thickness of speaker very
Greatly, shape is unsightly, and inconvenient to carry.
Invention content
Present invention aims at a kind of technical side of Ultrathin speaker structure is provided for deficiency of the prior art
Case, it is simple in structure, it is easy to carry, by devising special arc ring on the sound basin of Full-frequency trumpet, along with sound basin
V-structure effectively expands the vibration area of sound basin, the responding ability of low frequency in promotion, while being tied to leading note speaker
Structure is innovated, and bass leading note slot is made to form an individual cavity with upper cover and lower cover inside leading note speaker, by specific low
Sound leading note slot increases the strength sense of sound, keeps the bass effect of Full-frequency trumpet stronger, by by Full-frequency trumpet and high-pitched speaker
Be used cooperatively, keep the sound of entire Ultrathin speaker more balanced, same effect can be reached with large volume speaker sound quality on the market
Fruit.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme that：
A kind of Ultrathin speaker structure, including leading note speaker, Full-frequency trumpet and high-pitched speaker, Full-frequency trumpet include frame, magnetic
Steel, voice coil, magnet, magnetic conductive board, sound basin, dust cap and centring disk, it is characterised in that：Sound basin V-shaped structure is set on sound basin
It is equipped with arc ring；Arc ring ensure that axial movement of the sound basin along loudspeaker, while can stop air circulation, add
The V-structure of sound basin makes vibration area increase, and can effectively expand sound basin under the premise of sound basin relatively thin thickness
Vibrate area.
Further, leading note speaker includes upper cover and lower cover, and the upper surface of upper cover is provided with Full-frequency trumpet fixing groove, high pitch
The lower surface of loudspeaker fixing groove and leading note mouth, upper cover is provided with bass leading note slot and demarcation strip, and the setting of high-pitched speaker fixing groove exists
On the horizontal center line of upper cover；Upper cover, lower cover and demarcation strip constitute an individual cavity, when connecting audio signal, full range
Loudspeaker are under the driving of audio electrical signal, vibrating membrane up-down vibration, and when being vibrated to interiors of products, the air in product is compressed
Into bass leading note slot, damping is continuously increased with volume, and gas compressed is gushed out from leading note mouth, enhances the power of sound
Amount sense, keeps bass effect stronger；High-pitched speaker fixing groove is arranged on the horizontal center line of upper cover；High-pitched speaker is a list
Only seal can be placed on the centre position of leading note speaker as point sound source, can make sound balance, ensure any frequency
Signal can be synchronized to the ear of intelligent.
Further, bass leading note slot is made of leading note arc, the volume of bass leading note slot, the arc length and leading note of leading note arc
The size of the arc radius of arc and the area and Full-frequency trumpet and leading note speaker of leading note mouth matches；It is total using Helmholtz
The calculation formula that ring device principle is derived obtains the leading note arc arc structure of three-stage leading note slot, and bass leading note slot is using bending
Shape makes the volume of bass leading note slot increase, and the cavity of Curved is conducive to enhance the damping of air-flow, and air-flow passes through leading note arc
Guiding is sprayed from leading note mouth, increases sense of hearing.
Further, frame includes pelvic surface of sacrum and groove, and the reverse side of centring disk is bonded in groove, the front of centring disk
It is fixedly connected with sound basin；
Further, it is provided with the ring that shakes on centring disk；The ring that shakes can guarantee that voice coil discord magnetic conductive board touches, while can protect
Card voice coil can only move up and down with sound basin, without transverse shifting.
Further, magnet steel fixing groove is provided in groove, magnet steel is embedded into magnet steel fixing groove, and magnet is bonded in magnet steel
On, magnetic conductive board is bonded on magnet；Magnet steel provides carrier for the connection of magnet and frame, and magnet is in magnet steel, magnetic conductive board and magnetic
The space interior of the composition of steel fixing groove, is not easy leakage field, ensure that the normal service life of magnet.
Further, voice coil is fixed on the top of sound basin, and dust cap is bonded on sound basin；Dust cap can prevent dust
Grain enters voice coil, ensures the normal operation of voice coil.
Further, Full-frequency trumpet fixing groove runs through leading note speaker, the size of Full-frequency trumpet fixing groove and the ruler of Full-frequency trumpet
It is very little to match, it is provided at least one mounting hole on pelvic surface of sacrum, is connected by screw mounting hole and Full-frequency trumpet is fixed on full range loudspeaker
In fixing groove.
Further, upper cover is provided with ultrasonic fusing concave surface, and the side surrounding of lower cover is provided with ultrasonic fusing convex surface,
Upper cover and lower cover are welded using ultrasonic fusing；Ultrasonic fusing concave surface and ultrasonic fusing convex surface enable upper cover and lower cover
Better seal is fixed.
Further, gasket, the ruler of the size and Full-frequency trumpet seal groove of gasket are provided in Full-frequency trumpet fixing groove
Very little to match, Full-frequency trumpet is placed on gasket；Gasket ensure that the connection of Full-frequency trumpet and Full-frequency trumpet fixing groove more
Step up close, prevents the entrance of dust and liquid.
The present invention is by adopting the above-described technical solution, have the advantages that：
In the present invention, arc ring ensure that axial movement of the sound basin along Full-frequency trumpet, while can stop air stream
It is logical, it, can be effective to expand under the premise of sound basin relatively thin thickness along with the V-structure of sound basin makes vibration area increase
The vibration area of sound basin, Helmholtz resonator principle are to establish a confined space being made of ideal rigid body, this is empty
Chamber is just called " Hai Muhuo Hereby resonant cavities ", and hole of the area relative to cavity surface area very little is opened on the surface of cavity, composition
Structure be known as " Hai Muhuo Hereby acoustic resonator ", when its inner air receives the pressure compression of extraneous fluctuation, the sky in pipeline
Vibratory movement can occur for gas, generate maximum sound wave effect, and the calculating derived using Helmholtz resonator principle is public
Formula show that the arc structure of three-stage leading note slot, upper cover, lower cover and demarcation strip constitute an individual cavity, bass leading note
Slot uses Curved, the cavity of Curved to be conducive to enhance the damping of air-flow, so that the volume of bass leading note slot is increased, increase is listened
Sense.When connecting audio signal, Full-frequency trumpet is under the driving of audio electrical signal, vibrating membrane up-down vibration, is vibrated to interiors of products
When, the air in product is compressed in bass leading note slot, and damping is continuously increased with volume, and gas compressed passes through leading note
The guiding of arc is gushed out from leading note mouth, is enhanced the strength sense of sound, is kept bass effect stronger.
Present invention aims at a kind of technical side of Ultrathin speaker structure is provided for deficiency of the prior art
Case, it is simple in structure, it is easy to carry, by devising special arc ring on the sound basin of Full-frequency trumpet, along with sound basin
V-structure effectively expands the vibration area of sound basin, the responding ability of low frequency in promotion, while being tied to leading note speaker
Structure is innovated, and bass leading note slot is made to form an individual cavity with upper cover and lower cover inside leading note speaker, by specific low
Sound leading note slot increases the strength sense of sound, keeps the bass effect of Full-frequency trumpet stronger, by by Full-frequency trumpet and high-pitched speaker
Be used cooperatively, keep the sound of entire Ultrathin speaker more balanced, same effect can be reached with large volume speaker sound quality on the market
Fruit.
Description of the drawings
The invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 is a kind of structural schematic diagram of Ultrathin speaker structure in the present invention；
Fig. 2 is the planar structure schematic diagram of Full-frequency trumpet in the present invention；
Fig. 3 is the explosive view of Full-frequency trumpet in the present invention；
Fig. 4 is the sectional view of Full-frequency trumpet in the present invention；
Fig. 5 is the positive structure schematic of leading note speaker in the present invention；
Fig. 6 is the structural schematic diagram of upper cover in the present invention；
Fig. 7 is the structural schematic diagram of lower cover in the present invention；
Fig. 8 is the structural schematic diagram of gasket in the present invention；
Fig. 9 is the reverse structure schematic of leading note speaker in the present invention；
Figure 10 is schematic enlarged-scale view at the I of Fig. 4.
In figure：1- frame；2- pelvics surface of sacrum；3- magnet steel fixing grooves；4- grooves；5- magnet steel；6- voice coils；7- magnet；8- magnetic conductions
Plate；9- sound basins；10- dust caps；11- centring disks；12- shakes ring；13- arc rings；14- mounting holes；15- leading note speakers；
16- upper covers；17- lower covers；18- gaskets；19- Full-frequency trumpet fixing grooves；20- high-pitched speaker fixing grooves；21- leading note mouths；22-
Full-frequency trumpet；23- high-pitched speakers；24- bass leading note slots；25- leading note arcs；26- screws；27- demarcation strips；28- ultrasonic fusings
Concave surface；29- ultrasonic fusings convex surface.
Specific implementation mode
As shown in Figures 1 to 10, it is a kind of Ultrathin speaker structure of the present invention, including leading note speaker 15,22 and of Full-frequency trumpet
High-pitched speaker 23, Full-frequency trumpet 22 include frame 1, magnet steel 5, voice coil 6, magnet 7, magnetic conductive board 8, sound basin 9, dust cap 10 and determine
Heart branch piece 11,9 V-shaped structure of sound basin are provided with arc ring 13 on sound basin 9；Arc ring 13 ensure that sound basin 9 along loudspeaker
Axial movement, while can stop air circulation, along with the V-structure of sound basin 9 makes vibration area increase, Neng Gou
Under the premise of the relatively thin thickness of sound basin 9, the vibration area of sound basin 9 is effectively expanded.Leading note speaker 15 includes upper cover 16 and lower cover
17, the upper surface of upper cover 16 is provided with Full-frequency trumpet fixing groove 19, high-pitched speaker fixing groove 20 and leading note mouth 21, upper cover 16
Lower surface is provided with bass leading note slot 24 and demarcation strip 27；The horizontal center line in upper cover 16 is arranged in high-pitched speaker fixing groove 20
On；High-pitched speaker 23 is an independent seal, and the centre position of leading note speaker 15 can be placed on as point sound source, can
Make sound balance, ensures that the signal of any frequency can be synchronized to the ear of intelligent；27 groups of upper cover 16, lower cover 17 and demarcation strip
At an individual cavity, when connecting audio signal, Full-frequency trumpet 22 is under the driving of audio electrical signal, above and below vibrating membrane
Vibration, when being vibrated to interiors of products, the air in product is compressed in bass leading note slot 24, and damping is continuously increased with volume,
Gas compressed is gushed out from leading note mouth 21, is enhanced the strength sense of sound, is kept bass effect stronger.Bass leading note slot 24
To be made of leading note arc 25, the volume of bass leading note slot 24, the arc length of leading note arc 25 and leading note arc 25 arc radius and lead
The area of sound mouth 21 and the size of Full-frequency trumpet 22 and leading note speaker 15 match；It is derived using Helmholtz resonator principle
The calculation formula gone out show that 25 arc structure of leading note arc of three-stage leading note slot, bass leading note slot 24 use Curved, make bass
The volume of leading note slot 24 increases, and the cavity of Curved is conducive to enhance the damping of air-flow, air-flow by the guiding of leading note arc 25 from
Leading note mouth 21 sprays, and increases sense of hearing.Frame 1 includes pelvic surface of sacrum 2 and groove 4, and the reverse side of centring disk 11 is bonded in groove 4,
The front of centring disk 11 is fixedly connected with sound basin 9；The ring 12 that shakes is provided on centring disk 11；The ring 12 that shakes can guarantee voice coil 6 not
It is touched with magnetic conductive board 8, while can ensure that 6 meetings of voice coil move up and down with sound basin 9, without transverse shifting.In groove 4
It is provided with magnet steel fixing groove 3, magnet steel 5 is embedded into magnet steel fixing groove 3, and magnet 7 is bonded on magnet steel 5, and magnetic conductive board 8 is bonded in
On magnet 7；Magnet steel 5 provides carrier for the connection of magnet 7 and frame 1, and magnet 7 is in magnet steel 5, magnetic conductive board 8 and magnet steel fixing groove
The space interior of 3 composition, is not easy leakage field, ensure that the normal service life of magnet 7.Voice coil 6 is fixed on the upper of sound basin 9
Side, dust cap 10 are bonded on sound basin 9；Dust cap 10 can prevent dust granule from entering voice coil 6, ensure the normal fortune of voice coil 6
Make.Full-frequency trumpet fixing groove 19 runs through leading note speaker 15, the size of Full-frequency trumpet fixing groove 19 and the size phase of Full-frequency trumpet 22
It matches, at least one mounting hole 14 is provided on pelvic surface of sacrum 2, connecting mounting hole 14 by screw 26 is fixed on Full-frequency trumpet 22
In Full-frequency trumpet fixing groove 19.Upper cover 16 is provided with ultrasonic fusing concave surface 28, and the side surrounding of lower cover 17 is provided with ultrasonic wave
Welding convex surface 29, upper cover 16 and lower cover 17 are welded using ultrasonic fusing；Ultrasonic fusing concave surface 28 and ultrasonic fusing are convex
Face 29 enables upper cover 16 and 17 better seal of lower cover to fix.It is provided with gasket 18 in Full-frequency trumpet fixing groove 19, seals
The size of pad 18 and the size of 22 seal groove of Full-frequency trumpet match, and Full-frequency trumpet 22 is placed on gasket 18；Gasket 18
It ensure that the connection of Full-frequency trumpet 22 and Full-frequency trumpet fixing groove 19 is even closer, prevent the entrance of dust and liquid.
The design and calculation of bass leading note slot 24 are as follows：
21 area S of leading note mouth0Calculation formula is as follows:
S0=3/20*S1
S122 vibrating membrane of-Full-frequency trumpet effectively vibrates area
3/20-area coefficient
Measure S1=25cm2
Therefore 21 area S of leading note mouth0=3/20*25=3.75cm2≈4cm2
24 volume V of bass leading note slotOCalculation formula is as follows：
V0=3/20*V1
V1=a1*b1*h1
V1- sound box volume
3/20-volume factor
a1、b1、h1- speaker length
V is calculated according to formula1=25.4*16.4*1.1=458.2cm3
Therefore 24 volume V of bass leading note slot0=3/20*458.2 ≈ 70cm3
25 arc length L of leading note arc0Calculation formula is as follows：
L0=V0/S0
Therefore arc length L0=70/4=17.5cm
25 arc radius R calculation formula of leading note arc are as follows：
R=(180*L1)/(N*Π)
L1=L0/M
L1- circular arc is long
M-arc section coefficient, takes 3
N-central angle, 90 degree of cut-off angle
Π-pi
L is calculated according to formula1=17.5/3=5.8cm
Therefore radius R=(180*5.8)/(90*3.14)=3.69426752 ≈ 3.7cm
Go out the arc of circle of the leading note arc 25 of three-stage bass leading note slot 24 according to the radial design of calculating.
The present invention is by adopting the above-described technical solution, have the advantages that：
In the present invention, arc ring 13 ensure that axial movement of the sound basin 9 along Full-frequency trumpet 22, while can stop sky
Air-flow is logical, can be under the premise of the relatively thin thickness of sound basin 9, effectively along with the V-structure of sound basin 9 makes vibration area increase
The vibration area for expanding sound basin 9, Helmholtz resonator principle is to establish a confined air being made of ideal rigid body
Between, this cavity is just called " Hai Muhuo Hereby resonant cavities ", and an area is opened relative to cavity surface area very little on the surface of cavity
Hole, the structure of composition is known as " Hai Muhuo Hereby acoustic resonator ", when its inner air receives the pressure compression of extraneous fluctuation,
Vibratory movement can occur for the air in pipeline, generate maximum sound wave effect, be derived using Helmholtz resonator principle
The calculation formula gone out show that the arc structure of three-stage leading note slot, upper cover 16, lower cover 17 and demarcation strip 27 constitute one individually
Cavity, bass leading note slot 24 uses Curved, the cavity of Curved to be conducive to enhance the damping of air-flow, make bass leading note slot
24 volume increases, and increases sense of hearing.When connecting audio signal, Full-frequency trumpet 22 is under the driving of audio electrical signal, vibrating membrane
Up-down vibration, when being vibrated to interiors of products, the air in product is compressed in bass leading note slot 24, and damping is continuous with volume
Increase, gas compressed is gushed out from leading note mouth 21 by the guiding of leading note arc 25, enhances the strength sense of sound, make low
Audio fruit is stronger.
Present invention aims at a kind of technical side of Ultrathin speaker structure is provided for deficiency of the prior art
Case, it is simple in structure, it is easy to carry, by devising special arc ring 13 on the sound basin 9 of Full-frequency trumpet 22, add
The V-structure of sound basin 9 effectively expands the vibration area of sound basin 9, the responding ability of low frequency in promotion, while to leading note sound
Case 15 carries out structure innovation, and bass leading note slot 24 is made to form one individually with upper cover 16 and lower cover 17 inside leading note speaker 15
Cavity, the strength sense of sound is increased by specific bass leading note slot 24, keeps the bass effect of Full-frequency trumpet 22 stronger,
By being used cooperatively Full-frequency trumpet 22 and high-pitched speaker 23, keep the sound of entire Ultrathin speaker more balanced, can and market
Upper large volume speaker sound quality reaches effect same.
It these are only specific embodiments of the present invention, but the technical characteristic of the present invention is not limited thereto.It is any with this hair
Based on bright, for the technique effect for realizing essentially identical, made ground simple change, equivalent replacement or modification etc. are all covered
Among protection scope of the present invention.
Claims (10)
1. a kind of Ultrathin speaker structure, including leading note speaker, Full-frequency trumpet and high-pitched speaker, the Full-frequency trumpet include frame,
Magnet steel, voice coil, magnet, magnetic conductive board, sound basin, dust cap and centring disk, it is characterised in that：The V-shaped structure of sound basin, it is described
Arc ring is provided on sound basin.
2. a kind of Ultrathin speaker structure according to claim 1, it is characterised in that：The leading note speaker includes upper cover under
Lid, the upper surface of the upper cover is provided with Full-frequency trumpet fixing groove, high-pitched speaker fixing groove and leading note mouth, the following table of the upper cover
Face is provided with bass leading note slot and demarcation strip, and the high-pitched speaker fixing groove is arranged on the horizontal center line of the upper cover.
3. a kind of Ultrathin speaker structure according to claim 2, it is characterised in that：The bass leading note slot is by leading note arc
Constitute, the volume of the bass leading note slot, the arc length of the leading note arc and the leading note arc arc radius and the leading note
The size of the area and the Full-frequency trumpet and leading note speaker of mouth matches.
4. a kind of Ultrathin speaker structure according to claim 1, it is characterised in that：The frame includes pelvic surface of sacrum and groove,
The reverse side of the centring disk is bonded in the groove, and the front of the centring disk is fixedly connected with the sound basin.
5. a kind of Ultrathin speaker structure according to claim 1, it is characterised in that：It is provided with and shakes on the centring disk
Ring.
6. a kind of Ultrathin speaker structure according to claim 4, it is characterised in that：Magnet steel is provided in the groove to fix
Slot, the magnet steel are embedded into the magnet steel fixing groove, and the magnet is bonded on the magnet steel, and the magnetic conductive board is bonded in institute
It states on magnet.
7. a kind of Ultrathin speaker structure according to claim 1, it is characterised in that：The voice coil is fixed on the sound basin
Top, the dust cap are bonded on the sound basin.
8. a kind of Ultrathin speaker structure according to claim 2, it is characterised in that：The Full-frequency trumpet fixing groove runs through institute
Leading note speaker is stated, the size and the size of the Full-frequency trumpet of the Full-frequency trumpet fixing groove match, be arranged on the pelvic surface of sacrum
There is at least one mounting hole, is connected by screw the mounting hole and the Full-frequency trumpet is fixed on the Full-frequency trumpet fixing groove
It is interior.
9. a kind of Ultrathin speaker structure according to claim 2, it is characterised in that：The upper cover is provided with ultrasonic fusing
The side surrounding of concave surface, the lower cover is provided with ultrasonic fusing convex surface, and the upper cover and the lower cover use ultrasonic fusing
Welding.
10. a kind of Ultrathin speaker structure according to claim 2, it is characterised in that：It is set in the Full-frequency trumpet fixing groove
It is equipped with the gasket, the size of the gasket and the size of the Full-frequency trumpet seal groove match, the Full-frequency trumpet
It is placed on the gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810389994.9A CN108429988B (en) | 2018-04-27 | 2018-04-27 | Ultra-thin sound box structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810389994.9A CN108429988B (en) | 2018-04-27 | 2018-04-27 | Ultra-thin sound box structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108429988A true CN108429988A (en) | 2018-08-21 |
| CN108429988B CN108429988B (en) | 2020-02-14 |
Family
ID=63161937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810389994.9A Active CN108429988B (en) | 2018-04-27 | 2018-04-27 | Ultra-thin sound box structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN108429988B (en) |
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|---|---|---|---|---|
| CN110650389A (en) * | 2019-09-29 | 2020-01-03 | 歌尔股份有限公司 | Sound production device and audio playing equipment |
| WO2021050250A1 (en) * | 2019-09-13 | 2021-03-18 | Facebook Technologies, Llc | Display device with peripherally surrounding audio trench and acoustic port |
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| CN107087244A (en) * | 2017-06-14 | 2017-08-22 | 无锡杰夫电声股份有限公司 | A kind of thin speaker audio amplifier |
| CN207184785U (en) * | 2017-09-29 | 2018-04-03 | 深圳市美妙之音科技有限公司 | Low frequency expands audio amplifier |
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|---|---|---|---|---|
| US20120170796A1 (en) * | 2011-01-03 | 2012-07-05 | Cheng-Hsiung Chen | Ultra-thin loudspeaker structure |
| CN104113799A (en) * | 2014-07-25 | 2014-10-22 | 无锡杰夫电声有限公司 | Multipoint excitation source sound box with radiating structure |
| CN204929252U (en) * | 2015-09-10 | 2015-12-30 | 苏州声威电声股份有限公司 | Selvedge cone loudspeaker suitable for slim audio amplifier |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021050250A1 (en) * | 2019-09-13 | 2021-03-18 | Facebook Technologies, Llc | Display device with peripherally surrounding audio trench and acoustic port |
| CN110650389A (en) * | 2019-09-29 | 2020-01-03 | 歌尔股份有限公司 | Sound production device and audio playing equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108429988B (en) | 2020-02-14 |
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