CN105812966A - Integrated ceiling sound box structure and integrated ceiling sound box - Google Patents
Integrated ceiling sound box structure and integrated ceiling sound box Download PDFInfo
- Publication number
- CN105812966A CN105812966A CN201610134595.9A CN201610134595A CN105812966A CN 105812966 A CN105812966 A CN 105812966A CN 201610134595 A CN201610134595 A CN 201610134595A CN 105812966 A CN105812966 A CN 105812966A
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- China
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- loudspeaker
- cover plate
- box structure
- integral ceiling
- ceiling
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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
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
-
- 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)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
The invention discloses an integrated ceiling sound box structure and an integrated ceiling sound box. The integrated ceiling sound box structure comprises at least two loudspeakers, a cover plate, a housing and a screen with sound outlet holes; the at least two loudspeakers are installed on the cover plate; loudspeaker sound exiting openings corresponding to the loudspeaker openings of the at least two loudspeakers are formed in the cover plate; the housing is located at one end from which the loudspeaker openings are away; the housing is provided with at least two loudspeaker cavities for accommodating the at least two loudspeakers; the at least two loudspeaker cavities are covered with the cover plate, so that at least two independent sealing cavities can be formed; the screen with sound outlet holes is connected with the cover plate and is located at one end to which the loudspeaker openings are adjacent; a set distance is maintained between the screen and the at least two loudspeakers; the cover plate is longitudinally provided with a partition plate which is used for separating two adjacent loudspeakers; and sound separation cavities which are in one-to-one correspondence with the loudspeakers are formed between the screen and the cover plate. With the integrated ceiling sound box structure adopted, the high-fidelity stereo and high sound transmission performance of the integrated ceiling sound box can be realized with integrated ceiling standard size ensured. The integrated ceiling sound box structure of the invention has the advantages of simple structure and low manufacturing cost.
Description
Technical field
The present invention relates to audio amplifier field, especially, relate to a kind of Integral ceiling loudspeaker box structure and Integral ceiling audio amplifier.
Background technology
Along with growth in the living standard, people are also more and more higher to the pursuit of musical qualities, and Integral ceiling audio amplifier, owing to being not take up use space and traditional Integral ceiling consistent size and installing simple, is increasingly subject to the favor of user.But the simple structure of the current Integral ceiling audio amplifier built-in loudspeaker that are monophonic mostly, even loudspeaker are without cavity body structure (impact by the ceiling void is very big) behind, cause the sound played back dry and astringent, single, without third dimension, it is impossible to meet people's demand to high-quality music.
Therefore, how to design the Integral ceiling audio amplifier of a kind of high-quality music, be a problem demanding prompt solution.
Summary of the invention
Present invention aim at providing a kind of Integral ceiling loudspeaker box structure and Integral ceiling audio amplifier, to solve current Integral ceiling audio amplifier sound technical problem dry and astringent, single, sans relief.
For achieving the above object, the technical solution used in the present invention is as follows:
According to an aspect of the present invention, it is provided that a kind of Integral ceiling loudspeaker box structure, it is applied in Integral ceiling audio amplifier, including at least two loudspeaker；Cover plate, at least two loudspeaker are installed on the cover board, and cover plate offers the loudspeaker sound emitting mouth corresponding with the horn mouth of at least two loudspeaker；Case, is located remotely from bell-mouthed one end, and case is provided with at least two loudspeaker cavity for holding at least two loudspeaker, and cover plate and at least two loudspeaker cavity cover to form the independent sealed sound chamber of at least two mutually；Web plate with sound output aperture, it is connected with cover plate, is located close to bell-mouthed one end, between web plate and at least two loudspeaker, keep setpoint distance, the longitudinally disposed dividing plate for adjacent two loudspeaker in interval on cover plate, is formed and loudspeaker sound insulation chamber one to one between web plate and cover plate.
Further, Integral ceiling loudspeaker box structure also includes:
Aluminum-pinch, aluminum-pinch includes for the fixed part being fixedly linked with case and the holding section extending in the width direction and bending inwards；
Ceiling joist, ceiling joist is provided with the snap fit portion matched with holding section, and ceiling joist is additionally provided with elastic deformation portion, and elastic deformation portion makes holding section and the phase clamping of snap fit portion.
Further, holding section is through hole, and aluminum-pinch has identical thickness except throughhole portions.
Further, holding section is protruding, and projection is intilted engagement pawl.
Further, the cross section in elastic deformation portion is substantially inverted U-shaped, the inside prebuckling in bottom of the two sides section in this inverted U-shaped elastic deformation portion, becomes the snap fit portion on ceiling joist.
Further, Integral ceiling loudspeaker box structure also includes:
Clamp button of the spring, is arranged on the two relative side of case, is used for catching on ceiling joist.
Further, clamp button of the spring includes fixture and resilience part, and fixture is fixed on the side of case, and resilience part includes spring, rotating shaft and hook part, and the elastic force of spring is passed through around rotating shaft rotary elastic to catch on described ceiling joist in hook part.
Further, Integral ceiling loudspeaker box structure also includes:
Lamp source, is arranged on the outer wall of cover plate, for showing the duty of Integral ceiling audio amplifier；
Aperture, is arranged between cover plate and aluminum-pinch, for the light that transmission lamp source sends.
Further, Integral ceiling loudspeaker box structure also includes:
Sealing ring, sealing ring is between cover plate and case, and between at least two loudspeaker and cover plate, is used for the independent sealed sound chamber of at least two is sealed.
According to a further aspect in the invention, it is provided that a kind of Integral ceiling audio amplifier, including above-mentioned Integral ceiling loudspeaker box structure.
The method have the advantages that
Integral ceiling loudspeaker box structure provided by the invention and Integral ceiling audio amplifier, enclosed the formation independent sealed sound chamber of at least two respectively with case and cover plate by least two loudspeaker, and between web plate and at least two loudspeaker, keep setpoint distance, and formed and loudspeaker sound insulation chamber one to one between web plate and cover plate.Under ensureing the standard-sized premise of Integral ceiling, it is achieved Integral ceiling audio amplifier clear stereo and high sound transparency effect, present configuration is simple, low cost of manufacture.
Except purpose described above, feature and advantage, the present invention also has other purpose, feature and advantage.Below with reference to figure, the present invention is further detailed explanation.
Accompanying drawing explanation
The accompanying drawing constituting the part of the application is used for providing a further understanding of the present invention, and the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of Integral ceiling audio amplifier one preferred embodiment of the present invention；
Fig. 2 is the close-up schematic view of Fig. 1；
Fig. 3 is the Facad structure schematic diagram that Integral ceiling audio amplifier one preferred embodiment of the present invention is arranged on furred ceiling；
Fig. 4 is the scheme of installation of Integral ceiling audio amplifier one preferred embodiment of the present invention；And
Fig. 5 is the structural representation of clamp button of the spring one preferred embodiment in Fig. 1.
Accompanying drawing mark illustrates:
10, loudspeaker；20, cover plate；30, case；40, web plate；50, aluminum-pinch；51, fixed part；52, holding section；60, ceiling joist；61, snap fit portion；62, elastic deformation portion；70, clamp button of the spring；71, fixture；72, resilience part；721, spring；722, rotating shaft；723, hook part；80, lamp source；90, aperture；100, sealing ring.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
With reference to Fig. 1, the preferred embodiments of the present invention provide a kind of Integral ceiling loudspeaker box structure, are applied in Integral ceiling audio amplifier, including at least two loudspeaker 10；Cover plate 20, at least two loudspeaker 10 are arranged on cover plate 20, and cover plate 20 offers the loudspeaker sound emitting mouth corresponding with the horn mouth of at least two loudspeaker 10；Case 30, is located remotely from bell-mouthed one end, and case 30 is provided with at least two loudspeaker cavity for holding at least two loudspeaker 10, and cover plate 20 and at least two loudspeaker cavity cover to form the independent sealed sound chamber of at least two mutually；Web plate 40 with sound output aperture, it is connected with cover plate 20, it is located close to bell-mouthed one end, setpoint distance is kept between web plate 40 and at least two loudspeaker 10, the longitudinally disposed dividing plate for adjacent two loudspeaker 10 in interval on cover plate 20, is formed and loudspeaker 10 sound insulation chamber one to one between web plate 40 and cover plate 20.Wherein, loudspeaker cavity is enclosed by diapire and sidewall and forms.Seal audio cavity is internal adopts cambered surface design, distribution cavity vibrations while increasing cavity intensity.In the present embodiment, 3.5 cun of HIFI coaxial horns all selected by loudspeaker 10, HIFI coaxial horn height cent frequency, it is ensured that high pitch is clear, bass is simple and honest.At least two loudspeaker 10 are to angular distribution on cover plate 20, and sealing inside cavity parcel acoustical cotton, thus reducing resonance.The size of seal audio cavity is very big on the impact of sound equipment low frequency part, and sound chamber is too little, can cause that low frequency amplitude is little, and low-frequency effect is poor；Sound chamber is too big, can cause that audio sound does not have dynamics, energy is not concentrated, in the present embodiment, calculated and test of many times by accurate cavity volume, seal audio cavity is designed and sized to 112mm*112mm*55mm, by this design closing sound chamber size, 3.5 cun of HIFI coaxial horn play sound effect can be made to reach optimum efficiency.The Integral ceiling loudspeaker box structure that the present embodiment provides, the internal layer at web plate 40 joins adhesive-bonded fabric, and adhesive-bonded fabric can not only weaken low frequency peak value, but also has dust reduction capability, to avoid loudspeaker to affect acoustical quality because of the infiltration of dust.Accurately control the spacing of web plate 40 and loudspeaker 10 simultaneously, wherein, loudspeaker 10 include voice unit and bass unit, the spacing of voice unit distance web plate 40 is 6mm, the spacing of bass unit distance web plate 40 is 18mm, so that sound has bigger propagation angle, reduce high pitch distortion, bass energy more has dynamics indiffusion simultaneously, and ensures sound high-fidelity and high sound transparency.
The Integral ceiling loudspeaker box structure that the present embodiment provides, enclosed the formation independent sealed sound chamber of at least two respectively with case and cover plate by least two loudspeaker, and between web plate and at least two loudspeaker, keep setpoint distance, and formed and loudspeaker sound insulation chamber one to one between web plate and cover plate.Under ensureing the standard-sized premise of Integral ceiling, it is achieved Integral ceiling audio amplifier clear stereo and high sound transparency effect, the present embodiment simple in construction, low cost of manufacture.
Preferably, as depicted in figs. 1 and 2, the Integral ceiling loudspeaker box structure that the present embodiment provides, also include aluminum-pinch 50, aluminum-pinch 50 includes for the fixed part 51 being fixedly linked with case 30 and the holding section 52 extending in the width direction and bending inwards；Ceiling joist 60, ceiling joist 60 is provided with the snap fit portion 61 matched with holding section 52, and ceiling joist 60 is additionally provided with elastic deformation portion 62, and elastic deformation portion 62 makes holding section 52 and snap fit portion 61 phase clamping.The fixed part 51 of aluminum-pinch 50 is fixedly mounted on the medial surface of case 30.In this embodiment, aluminum-pinch 50 is circumferentially distributed along the edge of case 30, on the fixed part 51 of aluminum-pinch 50, fasten aluminum-pinch and case by screw, so that screw is hidden in the inside of Integral ceiling audio amplifier, it is ensured that aluminum-pinch be combined with case firm be simultaneously achieved specious.
Preferably, the Integral ceiling loudspeaker box structure that the present embodiment provides, the holding section 52 of aluminum-pinch 50 can be through hole, and aluminum-pinch 50 has identical thickness except throughhole portions.The aluminum-pinch 50 that the present embodiment provides, the aluminum alloy sheet adopting monoblock processes, processed by segmentation, boring and bending technique, the process of its processing is: first the large aluminum alloy sheet of monoblock is split, after being partitioned into appropriately sized single-piece, single-piece is holed, then again the single-piece of boring is carried out bending.The Integral ceiling loudspeaker box structure that the present embodiment provides, easy to process, low cost of manufacture.
Preferably, the Integral ceiling loudspeaker box structure that the present embodiment provides, the holding section 52 of aluminum-pinch 50 can also be protruding, and projection is intilted engagement pawl.The Integral ceiling loudspeaker box structure that the present embodiment provides, is coordinated with ceiling joist 60 by intilted engagement pawl, it is achieved that the steady installation of Integral ceiling audio amplifier.
Preferably, the Integral ceiling loudspeaker box structure that the present embodiment provides, as in figure 2 it is shown, the cross section in ceiling joist 60 elastic deformation portion 62 is substantially inverted U-shaped, the inside prebuckling in bottom of the two sides section in this inverted U-shaped elastic deformation portion 62, becomes the snap fit portion 61 on ceiling joist 60.The Integral ceiling loudspeaker box structure that the present embodiment provides, the inside prebuckling in bottom of the inverted U-shaped elastic deformation portion 62 two sides section of ceiling joist 60, it is achieved that the steady installation of Integral ceiling audio amplifier.
Preferably, as shown in Figure 1 and Figure 5, the Integral ceiling loudspeaker box structure that the present embodiment provides, also include clamp button of the spring 70, be arranged on the two relative side of case 30, be used for catching on ceiling joist 60.Specifically, clamp button of the spring 70 includes fixture 71 and resilience part 72, and fixture 71 is fixed on the side of case 30, and resilience part 72 includes spring 721, rotating shaft 722 and hook part 723, and the elastic force of spring 721 is passed through around rotating shaft 722 rotary elastic in hook part 723.
The Integral ceiling loudspeaker box structure that the present embodiment provides, the projection carried by aluminum-pinch snaps in standard suspension Os Draconis, coordinates the special clamp button of the spring of product side simultaneously, clamps ceiling joist from both direction, realizing product installation smooth firmly, Stability Analysis of Structures eliminates vibrations.
Preferably, as depicted in figs. 1 and 2, the Integral ceiling loudspeaker box structure that the present embodiment provides, also include lamp source 80, be arranged on the outer wall of cover plate 20, for showing the duty of Integral ceiling audio amplifier；Aperture 90, is arranged between cover plate 20 and aluminum-pinch 50, for the light that transmission lamp source 80 sends.Aperture 90 back-off is combined with cover plate 20, and one reinstates coarse thread self-tapping screw and is fixed in case 30, to reach to clamp the effect of aluminum-pinch 50 at four direction up and down simultaneously, thus ensureing that whole product is tightly combined, and the smooth tilting without turn-ups of aluminum-pinch.The one-tenth furred ceiling loudspeaker box structure that the present embodiment provides, cooperation by lamp source 80 and aperture 90, to show the duty of Integral ceiling audio amplifier, solve the state indication problem of Integral ceiling sound box system, and add the aesthetics of furred ceiling and improve overall display effect.
Preferably, as depicted in figs. 1 and 2, the Integral ceiling loudspeaker box structure that the present embodiment provides, also include sealing ring 100, sealing ring 100 is between cover plate 20 and case 30, and between at least two loudspeaker 10 and cover plate 20, is used for the independent sealed sound chamber of at least two is sealed.The one-tenth furred ceiling loudspeaker box structure that the present embodiment provides, by the independent sealed sound chamber of at least two is sealed, it is ensured that the tightness in sound chamber, improves the audio of Integral ceiling audio amplifier.
The present embodiment also provides for a kind of Integral ceiling audio amplifier, including above-mentioned Integral ceiling loudspeaker box structure, does not repeat them here.
The Integral ceiling audio amplifier that the present embodiment provides, as shown in Fig. 3, Fig. 4 and Fig. 5, its installation method is as follows:
The implementation that aluminum-pinch and sound equipment main body are fixing: the first step, from the medial surface of case 30 with fastened by screw aluminum-pinch 50 and case 30, screw is hidden in the inside of Integral ceiling audio amplifier, it is ensured that it is specious that aluminum-pinch 50 is combined being simultaneously achieved of consolidating with case 30.Second step, after aperture 90 is combined with cover plate 20 by back-off, one reinstates coarse thread self-tapping screw is fixed in case 30, reaches to clamp the effect of aluminum-pinch 50 from four direction up and down, thus ensure that whole product is tightly combined, the smooth tilting without turn-ups of aluminum-pinch.
The implementation of product integral installation: accomplish fluently ceiling joist 60, the first step in advance in position to be installed, the clamp button of the spring 70 of Integral ceiling audio amplifier side is fully opened.Second step, being loaded in ceiling joist 60 by Integral ceiling audio amplifier body, the projection of the holding section 52 that aluminum-pinch 50 carries snaps in the snap fit portion 61 of ceiling joist 60, and clamp button of the spring 70 automatic rebounding catches on ceiling joist 60, so that product firmly installs, Stability Analysis of Structures and elimination shake.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (10)
1. an Integral ceiling loudspeaker box structure, is applied in Integral ceiling audio amplifier, it is characterised in that including:
At least two loudspeaker (10)；
Cover plate (20), described at least two loudspeaker (10) are arranged on described cover plate (20), and described cover plate (20) offers the loudspeaker sound emitting mouth corresponding with the horn mouth of described at least two loudspeaker (10)；
Case (30), it is located remotely from described bell-mouthed one end, described case (30) is provided with at least two loudspeaker cavity for holding described at least two loudspeaker (10), and described cover plate (20) and described at least two loudspeaker cavity cover to form the independent sealed sound chamber of at least two mutually；
Web plate (40) with sound output aperture, it is connected with described cover plate (20), it is located close to described bell-mouthed one end, setpoint distance is kept between described web plate (40) and described at least two loudspeaker (10), the upper longitudinally disposed dividing plate for adjacent two loudspeaker (10) in interval of described cover plate (20), is formed and described loudspeaker (10) sound insulation chamber one to one between described web plate (40) and described cover plate (20).
2. Integral ceiling loudspeaker box structure according to claim 1, it is characterised in that also include:
Aluminum-pinch (50), described aluminum-pinch (50) includes for the fixed part (51) being fixedly linked with described case (30) and the holding section (52) extending in the width direction and bending inwards；
Ceiling joist (60), described ceiling joist (60) is provided with the snap fit portion (61) matched with described holding section (52), being additionally provided with elastic deformation portion (62) on described ceiling joist (60), described elastic deformation portion (62) makes described holding section (52) and the phase clamping of described snap fit portion (61).
3. Integral ceiling loudspeaker box structure according to claim 2, it is characterised in that
Described holding section (52) is through hole, and described aluminum-pinch (50) has identical thickness except throughhole portions.
4. Integral ceiling loudspeaker box structure according to claim 2, it is characterised in that
Described holding section (52) is protruding, and described projection is intilted engagement pawl.
5. Integral ceiling loudspeaker box structure according to claim 2, it is characterised in that
The cross section of described elastic deformation portion (62) is substantially inverted U-shaped, the inside prebuckling in bottom of the two sides section of this inverted U-shaped described elastic deformation portion (62), becomes the snap fit portion (61) on described ceiling joist (60).
6. Integral ceiling loudspeaker box structure according to claim 2, it is characterised in that also include:
Clamp button of the spring (70), is arranged on the two relative side of described case (30), is used for catching on described ceiling joist (60).
7. Integral ceiling loudspeaker box structure according to claim 6, it is characterised in that
Described clamp button of the spring (70) includes fixture (71) and resilience part (72), described fixture (71) is fixed on the side of described case (30), described resilience part (72) includes spring (721), rotating shaft (722) and hook part (723), described hook part (723) by the elastic force of described spring (721) around described rotating shaft (722) rotary elastic to catch on described ceiling joist (60).
8. Integral ceiling loudspeaker box structure according to claim 7, it is characterised in that also include:
Lamp source (80), is arranged on the outer wall of described cover plate (20), for showing the duty of described Integral ceiling audio amplifier；
Aperture (90), is arranged between described cover plate (20) and described aluminum-pinch (50), the light that described in transmission lamp source (80) send.
9. Integral ceiling loudspeaker box structure according to claim 8, it is characterised in that also include:
Sealing ring (100), described sealing ring (100) is positioned between described cover plate (20) and described case (30), and between described at least two loudspeaker (10) and described cover plate (20), for the independent sealed sound chamber of described at least two is sealed.
10. an Integral ceiling audio amplifier, it is characterised in that include the Integral ceiling loudspeaker box structure as described in any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610134595.9A CN105812966A (en) | 2016-03-10 | 2016-03-10 | Integrated ceiling sound box structure and integrated ceiling sound box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610134595.9A CN105812966A (en) | 2016-03-10 | 2016-03-10 | Integrated ceiling sound box structure and integrated ceiling sound box |
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| Publication Number | Publication Date |
|---|---|
| CN105812966A true CN105812966A (en) | 2016-07-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610134595.9A Pending CN105812966A (en) | 2016-03-10 | 2016-03-10 | Integrated ceiling sound box structure and integrated ceiling sound box |
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| Country | Link |
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| CN (1) | CN105812966A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106714012A (en) * | 2016-12-28 | 2017-05-24 | 常州扬仕信息科技有限公司 | Vibration damping structure of ceiling speaker |
| CN107948770A (en) * | 2017-12-22 | 2018-04-20 | 宁波向往智能科技有限公司 | A kind of concealed speaker |
| CN109905788A (en) * | 2019-03-27 | 2019-06-18 | 深圳市火乐科技发展有限公司 | A kind of sound equipment |
| CN112929772A (en) * | 2021-03-16 | 2021-06-08 | 广州君传晟世电声设备有限公司 | Ceiling type sound equipment |
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| US20020018576A1 (en) * | 2000-08-10 | 2002-02-14 | Yoshiharu Shima | Structure around a speaker unit and applied electric or electronic apparatus thereof |
| CN101098565A (en) * | 2006-06-28 | 2008-01-02 | 陈周万 | Embedded rotatable sound box |
| CN204180221U (en) * | 2014-10-13 | 2015-02-25 | 智戎科技股份有限公司 | Audio amplifier lighting device |
| CN204305281U (en) * | 2015-01-05 | 2015-04-29 | 陈晓燕 | A kind of Integral ceiling Baffle Box of Bluetooth |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR19980067543A (en) * | 1997-02-05 | 1998-10-15 | 김지택 | Car speaker |
| US20020018576A1 (en) * | 2000-08-10 | 2002-02-14 | Yoshiharu Shima | Structure around a speaker unit and applied electric or electronic apparatus thereof |
| CN101098565A (en) * | 2006-06-28 | 2008-01-02 | 陈周万 | Embedded rotatable sound box |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106714012A (en) * | 2016-12-28 | 2017-05-24 | 常州扬仕信息科技有限公司 | Vibration damping structure of ceiling speaker |
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| CN109905788A (en) * | 2019-03-27 | 2019-06-18 | 深圳市火乐科技发展有限公司 | A kind of sound equipment |
| CN109905788B (en) * | 2019-03-27 | 2024-04-02 | 深圳市火乐科技发展有限公司 | Sound equipment |
| CN112929772A (en) * | 2021-03-16 | 2021-06-08 | 广州君传晟世电声设备有限公司 | Ceiling type sound equipment |
| CN112929772B (en) * | 2021-03-16 | 2021-12-24 | 广州君传晟世电声设备有限公司 | Ceiling type sound equipment |
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Application publication date: 20160727 |