CN111447537A - Indoor sound amplification system - Google Patents
Indoor sound amplification system Download PDFInfo
- Publication number
- CN111447537A CN111447537A CN201911282596.8A CN201911282596A CN111447537A CN 111447537 A CN111447537 A CN 111447537A CN 201911282596 A CN201911282596 A CN 201911282596A CN 111447537 A CN111447537 A CN 111447537A
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- sound
- sound amplification
- mounting groove
- indoor
- public address
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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
- H04R27/00—Public address systems
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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
- H04R1/026—Supports for loudspeaker casings
Abstract
The invention relates to the technical field of indoor sound amplification, in particular to an indoor sound amplification system which comprises a sound body, a lifting mechanism and a sound amplification mechanism, wherein the lifting mechanism comprises a support frame, a rotating screw rod and a driving piece; the sound body is installed in public address mechanism, and one side of public address mechanism includes public address mouth. Through setting up elevating system, when needs clearance or maintenance sound body, can be so that sound body falls and clear up or maintain, need not to climb to the eminence with the help of instruments such as ladders, the maintenance clearance is convenient and safer. Simultaneously, be provided with public address mechanism again, when the volume adjustment of stereo set body is the biggest and the volume at this moment is not enough, can enlarge the volume with the help of public address mechanism, further strengthened the public address scope of stereo set.
Description
Technical Field
The invention relates to the technical field of indoor sound amplification, in particular to an indoor sound amplification system.
Background
The indoor is a place where activities such as lecture listening, small-sized reporting, music appreciation, and the like are performed, and the sound reinforcement system installed indoors is a sound installed indoors.
In the prior art, the sound box is fixedly arranged on an indoor wall body, and the position cannot be changed and cannot be adjusted after the sound box is arranged. The stereo set can fall full of the dust in long-term use, will regularly clear up after using a period, nevertheless because stereo set fixed mounting on the wall body, need climb to the top with the help of instruments such as ladders and just can clear up the stereo set, extremely inconvenient and have the potential safety hazard when leading to the clearance.
Disclosure of Invention
The invention aims to provide an indoor sound amplifying system to solve the technical problem that in the prior art, a sound is inconvenient to clean.
In order to achieve the above object, the technical scheme adopted by the present invention is to provide an indoor sound reinforcement system, which includes a sound body, a lifting mechanism for driving the sound body to lift, and a sound reinforcement mechanism for adjusting the volume of the sound body, wherein the lifting mechanism includes a support frame, a rotating screw rod located in the support frame, and a driving member for driving the rotating screw rod to rotate, the sound body is sleeved on the rotating screw rod and can be slidably connected to the support frame along a vertical direction, the driving member is located at the bottom end of the rotating screw rod, and an output shaft of the driving member is fixedly connected to one end of the rotating screw rod; the sound box body is arranged in the sound amplifying mechanism, and one side of the sound amplifying mechanism comprises a sound amplifying port.
Furthermore, the support frame is provided with a sliding groove, the cross section of the sliding groove is a groove, the lifting mechanism further comprises an installation block, the sound body is fixedly installed on one side of the installation block, and the installation block is matched with the sliding groove and is connected with the sliding groove in a sliding manner.
Furthermore, one side of the mounting block, which is located outside the sliding groove, is provided with a mounting groove, the sound box body is located in the mounting groove, the sound amplifying mechanism comprises a sound amplifying plate group, the sound amplifying plate group is rotatably connected to the mounting groove, the sound box body is surrounded by the sound amplifying plate group, and one side, which is far away from the mounting groove, of the sound amplifying plate group forms a sound amplifying opening.
Furthermore, the sound amplifying board group comprises a group of first sound amplifying boards and a group of second sound amplifying boards, wherein the first sound amplifying boards are arranged oppositely, the second sound amplifying boards are arranged oppositely, and connectors are arranged between the first sound amplifying boards and the second sound amplifying boards and are made of flexible materials.
Furthermore, one end of the first sound-amplifying board, which is close to the mounting groove, is provided with a first rotating shaft, the first rotating shaft is rotatably connected to the mounting groove, and a first power part for driving the first rotating shaft to rotate is arranged in the mounting groove.
Furthermore, a self-locking assembly used for fixing the rotated first sound expansion board is arranged on one side of the first rotating shaft.
Furthermore, the self-locking assembly comprises a worm wheel and a worm, one end of the worm is fixedly connected to the output shaft end of the first power part, the worm wheel is meshed with the worm, and the worm wheel is sleeved on the first rotating shaft and is fixedly connected with the first rotating shaft.
Furthermore, a second rotating shaft is arranged at one end, close to the mounting groove, of the second sound expansion board, the second rotating shaft and the first rotating shaft are arranged in a staggered mode, the second rotating shaft is rotatably connected to the mounting groove, and a second power part for driving the second rotating shaft to rotate is arranged in the mounting groove.
Furthermore, the bottom of support frame is provided with the installing port that makes things convenient for public address mechanism to install.
Further, the public address system also comprises a controller for controlling the first power part and the second power part to rotate or stop simultaneously, and the controller is electrically connected with the first power part and the second power part.
The invention has the beneficial effects that:
1. through setting up elevating system, when needs clearance or maintenance sound body, can be so that sound body falls and clear up or maintain, need not to climb to the eminence with the help of instruments such as ladders, the maintenance clearance is convenient and safer. Simultaneously, be provided with public address mechanism again, when the volume adjustment of stereo set body is the biggest and the volume at this moment is not enough, can enlarge the volume with the help of public address mechanism, further strengthened the public address scope of stereo set.
2. The support frame is provided with a sliding groove, the cross section of the sliding groove is a T-shaped groove, and the mounting block is matched with the sliding groove and is connected with the sliding groove in a sliding manner. The T-shaped groove and the T-shaped block are matched to slide stably, namely the mounting block slides stably in the sliding groove, so that the mounting block can slide conveniently. Meanwhile, the T-shaped sliding groove is matched with the mounting block, so that the mounting block is limited, and the mounting block is prevented from being separated from the sliding groove when sliding.
3. The public address mechanism includes public address board group, and public address board group surrounds sound set body, and public address board group can gather together the sound that sound set body sent, sends towards certain direction after gathering together, has consequently played the effect of reinforcing sound.
4. Through setting up the connector can make public address board group surround the stereo set body, just can better draw in the sound at this moment. When first abatvoix and second abatvoix rotated, the connector was flexible material, just can be better the size of adjustment public address mouth, realized the regulation of volume size.
5. First power spare rotates, can drive first rotation axis and rotate, and first rotation axis and first abatvoix fixed connection, and first rotation axis rotates and can drive first abatvoix and rotate, and then realizes the angular adjustment of first abatvoix, has realized the size adjustment of public address mouth, conveniently adjusts the volume size.
6. Through setting up the auto-lock subassembly, can lock the first axis of rotation after rotating, avoid the first axis of rotation after the rotation to drive under the action of gravity of first abatvoix for first axis of rotation resets, and the position steadiness of first abatvoix has been strengthened to the auto-lock subassembly.
7. The self-locking assembly comprises a worm wheel and a worm, the worm wheel and the worm are simple in structure, the requirement for the transmission function can be met, and the self-locking assembly has a self-locking function. The driving part is a worm, the driven part is a worm wheel, namely, the rotation of the worm can drive the rotation of the worm wheel, and the rotation of the worm wheel can not drive the rotation of the worm.
8. The second power part rotates, can drive the second axis of rotation and rotate, and second axis of rotation and second abatvoix fixed connection, and the second axis of rotation rotates and can drive the second abatvoix and rotate, and then realizes the angular adjustment of second abatvoix, has realized the big or small adjustment of public address mouth, conveniently adjusts the volume size. Meanwhile, the first rotating shafts and the second rotating shafts are arranged in a staggered mode, and the first rotating shafts and the second rotating shafts work independently and do not affect each other.
9. The bottom of support frame is provided with the installing port, through setting up the installing port, has reserved installation space, has made things convenient for public address mechanism's installation.
10. Through setting up the controller, the first power spare of controller control and second power spare rotate simultaneously or stop, and first power spare rotates the regulation that can be better realization public address mouth with the second power spare simultaneously, and then makes things convenient for the adjustment of sound.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic overall structure diagram of an indoor sound amplification system according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a lifting mechanism adopted in an indoor sound amplifying system according to an embodiment of the present invention, wherein a sound body and a sound amplifying mechanism are not shown;
fig. 3 is a schematic overall structure diagram of a sound amplifying mechanism used in an indoor sound amplifying system according to an embodiment of the present invention;
fig. 4 is a schematic position diagram of a receiving cavity adopted in an indoor sound amplifying system according to an embodiment of the present invention, in which a connecting body is not shown.
Description of reference numerals:
1. a wall body; 2. a lifting mechanism; 21. a support frame; 211. a chute; 212. an installation port; 22. rotating the screw rod; 23. a drive member; 24. mounting blocks; 241. mounting grooves; 242. mounting holes; 3. a sound amplifying mechanism; 31. a sound amplifying port; 32. a sound amplifying board group; 321. a first sound-diffusing panel; 3211. a first rotating shaft; 3212. a receiving cavity; 322. a second sound-diffusing panel; 3221. a second rotating shaft; 323. a linker; 4. the stereo set body.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Referring to fig. 1, the indoor sound amplification system provided by the invention comprises a sound body 4, a lifting mechanism 2 and a sound amplification mechanism 3, wherein the lifting mechanism 2 can drive the sound body 4 to lift, the sound body 4 is installed in the sound amplification mechanism 3, and by arranging the lifting mechanism 2, when the sound body 4 needs to be cleaned or maintained, the sound body 4 can be lowered to be cleaned or maintained without climbing to a high place by means of a ladder and other tools, so that the maintenance and the cleaning are convenient and safe. Meanwhile, the sound amplifying mechanism 3 is arranged, when the volume of the sound body 4 is adjusted to be the maximum and the volume at the moment is not enough, the volume can be enlarged by means of the sound amplifying mechanism 3, and the sound amplifying range is further enlarged.
Referring to fig. 1 and 2, specifically, the lifting mechanism 2 includes a support frame 21, a rotary screw 22, an installation block 24 and a driving element 23, the support frame 21 is fixedly installed on the wall 1, and the support frame 21 is perpendicular to the ground. The support frame 21 is provided with a sliding groove 211 along the vertical direction, the cross section of the sliding groove 211 is a T-shaped groove, the mounting block 24 is matched with the sliding groove 211 and is connected to the sliding groove 211 in a sliding manner, and one side of the mounting block 24 is fixedly connected with the sound body 4. The matching sliding of the T-shaped groove and the T-shaped block is more stable, namely the mounting block 24 slides more stably in the sliding groove 211, which is beneficial to the sliding of the mounting block 211. Meanwhile, the T-shaped sliding groove 211 is matched with the mounting block 24, so that the mounting block 24 is limited, and the mounting block 24 is prevented from being separated from the sliding groove 211 when sliding. The rotating screw rod 22 is located in the sliding groove 211 and parallel to the supporting frame 21, and the rotating screw rod 22 is rotatably connected to two ends of the supporting frame 21. The mounting block 24 is provided with a mounting hole 242, and the rotating screw 22 is inserted into the mounting hole 242 and engaged with the mounting hole 242. The rotation of the rotary screw 22 drives the mounting block 24 to move up and down along the sliding slot 211.
The cross section of the sliding groove 211 can be L-shaped, the L-shaped groove can limit the mounting block 24, and the rotary screw rod 22 can be replaced by an existing device with a lifting function, such as an air cylinder or an electronic telescopic rod.
Referring to fig. 1, in particular, the bottom end of the supporting frame 21 is provided with a mounting opening 212, and by providing the mounting opening 212, a mounting space is left, which facilitates the installation of the sound amplifying mechanism 3. The driving member 23 is located at the position of the mounting opening 212, and an output shaft end of the driving member 23 is fixedly connected to one end of the rotating screw rod 22. The driving member 23 may also be a device for providing power for a motor and the like.
Referring to fig. 2 and 3, in addition, as an indoor sound reinforcement system provided by the present invention, the sound reinforcement mechanism 3 includes a sound reinforcement plate group 32, a mounting groove 241 is formed on a side of the mounting block 24 located outside the sliding groove 211, the main body 4 is fixedly mounted in the mounting groove 241, the sound reinforcement plate group 32 is rotatably connected to the mounting groove 241, the sound reinforcement plate group 32 surrounds the main body 4, and a sound reinforcement opening 31 is formed on a side of the sound reinforcement plate group 32 away from the mounting groove 241. The sound amplifying board group 32 can gather the sound emitted from the main body 4 and emit the sound in a certain direction, thereby enhancing the sound.
Referring to fig. 3 and 4, in particular, the sound amplifying panel group 32 includes a set of first sound-diffusing panels 321 and a set of second sound-diffusing panels 322, which are oppositely disposed, and a connecting body 323 is disposed between the first sound-diffusing panels 321 and the second sound-diffusing panels 322, and the connecting body 323 is made of a flexible material. By providing the connecting body 323, the sound amplifying board group 32 can surround the sound box body 4, and the sound gathering can be performed better. When the first sound-amplifying board 321 and the second sound-amplifying board 322 rotate, the connecting body 323 is made of a flexible material, so that the size of the sound-amplifying opening 31 can be adjusted better, and the volume can be adjusted. The first sound expansion board 321 is provided with a containing cavity 3212, and the connecting body 323 can be located in the containing cavity 3212. When the first sound amplifying plate 321 and the second sound amplifying plate 322 are adjusted, along with the rotation of the first sound amplifying plate 321 and the second sound amplifying plate 322, the connecting body 323 can be partially positioned in the accommodating cavity 3212, and the sound gathering effect of the sound amplifying plate group 32 is better through the accommodating effect of the accommodating cavity 3212 on the connecting body 323, so that the sound amplifying effect of the sound amplifying mechanism 3 is further enhanced.
Referring to fig. 3 and 4, specifically, one end of the first sound amplifying board 321 close to the mounting groove 241 is fixedly connected with a first rotating shaft 3211, the first rotating shaft 3211 is rotatably connected to the mounting groove 241, a first power member (not shown) is disposed in the mounting groove 241, and an output shaft end of the first power member is fixedly connected to one end of the first rotating shaft 3211.
Wherein, the first power part can also be a device for providing power for a motor and the like. The first rotating shaft 3211 may also be fixedly connected to the mounting groove 241, at this time, a shaft sleeve is disposed on the first sound amplifying board 321, the shaft sleeve is sleeved on the first rotating shaft 3211 and is rotatably connected to the first rotating shaft 3211, and at this time, an output shaft end of the first power component should be fixedly connected to the shaft sleeve.
Referring to fig. 3 and 4, specifically, a second rotation shaft 3221 is disposed at an end of the second sound expansion board 322 close to the mounting groove 241, the second rotation shaft 3221 is staggered with the first rotation shaft 3211, the second rotation shaft 3221 is rotatably connected to the mounting groove 241, a second power member (not shown) is disposed in the mounting groove 241, an output shaft end of the second power member is fixedly connected to an end of the second rotation shaft 3221, in this embodiment, the second power member is a motor, the second power member rotates to drive the second rotation shaft 3221 to rotate, the second rotation shaft 3221 is fixedly connected to the second sound expansion board 322, and the second rotation shaft 3221 rotates to drive the second sound expansion board 322 to rotate, so as to implement angle adjustment of the second sound expansion board 322, implement size adjustment of the sound amplification port 31, and facilitate volume adjustment. Meanwhile, the first rotating shaft 3211 and the second rotating shaft 3221 are arranged in a staggered manner, and the first rotating shaft 3211 and the second rotating shaft 3221 work independently without affecting each other.
Wherein, the second power part can also be a device for providing power for a motor and the like. The second rotating shaft 3221 may also be fixedly connected to the mounting groove 241, at this time, a shaft sleeve is disposed on the second sound expanding board 322, the shaft sleeve is sleeved on the second rotating shaft 3221 and is rotatably connected to the second rotating shaft 3221, and at this time, an output shaft end of the second power member should be fixedly connected to the shaft sleeve.
Referring to fig. 4, as an indoor sound amplifying system provided by the present invention, a self-locking assembly (not shown) is disposed at one side of the first rotating shaft 3211. Through setting up the auto-lock subassembly, can lock the first axis of rotation 3211 after the rotation, avoid the first axis of rotation 3211 after the rotation to drive under the action of gravity of first abatvoix 321 for first axis of rotation 3211 resets, and the position steadiness of first abatvoix 321 has been strengthened to the auto-lock subassembly.
Specifically, the self-locking assembly includes worm wheel and worm, and the one end fixed connection of worm is in the output axle head of first power spare, and the worm wheel meshes with the worm mutually, and the worm wheel cover is located on first axis of rotation 3211 and with first axis of rotation 3211 fixed connection. The worm gear has a simple structure, can meet the requirement of a transmission function, and has a self-locking function. The driving part is a worm, the driven part is a worm wheel, namely, the rotation of the worm can drive the rotation of the worm wheel, and the rotation of the worm wheel can not drive the rotation of the worm.
A self-locking assembly is disposed on one side of the second rotating shaft 3221, and the installation position of the self-locking assembly corresponds to the first rotating shaft 3211, which is not described herein again.
Further, as an indoor sound amplifying system provided by the present invention, the sound amplifying system further includes a controller (not shown), the controller is electrically connected to the first power member and the second power member, and the controller can control the first power member and the second power member to rotate or stop simultaneously. Through setting up the controller, the first power spare of controller control and second power spare rotate simultaneously or stop, and first power spare rotates the regulation that realizes public address mouth 31 that can be better with second power spare simultaneously, and then makes things convenient for the adjustment of sound.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. An indoor sound reinforcement system, includes stereo set body (4), its characterized in that still includes:
the lifting mechanism (2) is used for driving the sound body (4) to lift, the lifting mechanism (2) comprises a support frame (21), a rotating screw rod (22) located in the support frame (21) and a driving piece (23) for driving the rotating screw rod (22) to rotate, the sound body is sleeved on the rotating screw rod (22) and can be connected to the support frame (21) in a sliding mode along the vertical direction, the driving piece (23) is located at the bottom end of the rotating screw rod (22), and an output shaft of the driving piece (23) is fixedly connected to one end of the rotating screw rod (22);
adjust public address mechanism (3) of sound body volume size, sound body (4) install in public address mechanism (3), one side of public address mechanism (3) includes public address mouth (31).
2. The indoor sound amplification system of claim 1, wherein the support frame (21) is provided with a sliding groove (211), the cross section of the sliding groove (211) is a T-shaped groove, the lifting mechanism (2) further comprises an installation block (24), the sound body (4) is fixedly installed on one side of the installation block (24), and the installation block (24) is matched with the sliding groove (211) and is slidably connected to the sliding groove (211).
3. An indoor sound amplification system as claimed in claim 2, wherein a mounting groove (241) is formed in a side of the mounting block (24) located outside the sliding groove (211), the sound body (4) is located in the mounting groove (241), the sound amplification mechanism (3) comprises a sound amplification plate group (32), the sound amplification plate group (32) is rotatably connected to the mounting groove (241), the sound amplification plate group (32) surrounds the sound body (4), and a sound amplification opening (31) is formed in a side of the sound amplification plate group (32) away from the mounting groove (241).
4. An indoor sound amplification system according to claim 3, wherein the sound amplification plate group (32) comprises a set of first sound amplification plates (321) and a set of second sound amplification plates (322), the first sound amplification plates (321) and the second sound amplification plates (322) are arranged oppositely, and a connecting body (323) is arranged between the first sound amplification plates (321) and the second sound amplification plates (322), and the connecting body (323) is made of a flexible material.
5. An indoor sound amplifying system as claimed in claim 4, wherein a first rotating shaft (3211) is provided at one end of the first sound amplifying board (321) close to the mounting groove (241), the first rotating shaft (3211) is rotatably connected to the mounting groove (241), and a first power member for driving the first rotating shaft to rotate is provided in the mounting groove (241).
6. An indoor sound amplifying system as claimed in claim 5, wherein one side of the first rotating shaft (3211) is provided with a self-locking assembly for fixing the first sound amplifying board (321) after rotation.
7. The indoor sound amplification system of claim 6, wherein the self-locking assembly comprises a worm wheel and a worm, one end of the worm is fixedly connected to an output shaft end of the first power member, the worm wheel is meshed with the worm, and the worm wheel is sleeved on the first rotating shaft (3211) and is fixedly connected with the first rotating shaft (3211).
8. The indoor sound amplifying system as claimed in claim 5, wherein a second rotation shaft (3221) is disposed at an end of the second sound amplifying board (322) close to the mounting groove (241), the second rotation shaft (3221) is staggered with the first rotation shaft (3211), the second rotation shaft (3221) is rotatably connected to the mounting groove (241), and a second power member for driving the second rotation shaft to rotate is disposed in the mounting groove (241).
9. An indoor sound amplifying system as claimed in claim 1, wherein the bottom of the supporting frame (21) is provided with a mounting opening (212) for facilitating the installation of the sound amplifying mechanism (3).
10. The indoor sound amplification system of claim 8, wherein the sound amplification system further comprises a controller for controlling the first power member and the second power member to rotate or stop simultaneously, and the controller is electrically connected to the first power member and the second power member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911282596.8A CN111447537B (en) | 2019-12-13 | 2019-12-13 | Indoor sound amplification system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911282596.8A CN111447537B (en) | 2019-12-13 | 2019-12-13 | Indoor sound amplification system |
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| CN111447537A true CN111447537A (en) | 2020-07-24 |
| CN111447537B CN111447537B (en) | 2021-01-08 |
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| CN108966106A (en) * | 2018-07-18 | 2018-12-07 | 卢剑斌 | A kind of multi-functional public address set for teaching |
| CN208590097U (en) * | 2018-07-30 | 2019-03-08 | 广州唯妙电子科技有限公司 | A kind of adjustable loudspeaker box structure of cabinet |
| CN208590074U (en) * | 2018-07-30 | 2019-03-08 | 广州唯妙电子科技有限公司 | A kind of panorama sound sky speaker travelling cradle |
| CN109246531A (en) * | 2018-09-13 | 2019-01-18 | 成都博美实润科技有限公司 | A kind of adjustable environment-friendly type sound equipment of sound |
| CN209419816U (en) * | 2019-02-12 | 2019-09-20 | 浙江盛元信息科技有限公司 | A kind of wall-hanging sound equipment convenient for adjusting |
| CN209184808U (en) * | 2019-03-03 | 2019-07-30 | 罗晓飞 | A kind of construction information transfer device |
| CN209676479U (en) * | 2019-06-18 | 2019-11-22 | 雷红薇 | Intelligent teaching public address set |
| CN209767826U (en) * | 2019-07-17 | 2019-12-10 | 深圳声研科技发展有限公司 | Surround sound box for home theater |
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| CN111447537B (en) | 2021-01-08 |
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