A classroom sound amplification teaching device

Abstract

This invention discloses an indoor sound amplification teaching device, including a control device and a sound distribution device. The control device is wirelessly connected to an external microphone structure and electrically connected to the speaker structures inside multiple sound distribution devices distributed indoors via a transmission device. A load-bearing bracket is fixedly installed at the bottom of each sound distribution device. Each sound distribution device includes an amplification flip cover and a sound-receiving box. The inner walls of both the amplification flip cover and the sound-receiving box are filled with sound-insulating structures. The front end of the sound-receiving box has an amplification flip cover that can be opened via a driving device. The amplification flip cover and the sound-receiving box are rotatably connected. In this solution, by distributing the speaker structures inside the teaching classroom, a surround sound amplification effect can be achieved, eliminating dead zones and greatly ensuring the sound quality and propagation quality.

Description

Technical Field

[0001] This invention belongs to the technical field of amplified teaching devices, specifically relating to an indoor amplified teaching device. Background Technology

[0002] Teaching is a uniquely human activity of talent cultivation, consisting of teachers' instruction and students' learning. Through this activity, teachers purposefully, systematically, and organizationally guide students to learn and master cultural and scientific knowledge and skills, promoting the improvement of students' overall quality and enabling them to become the people needed by society. In the teaching process, due to the large size of the classroom, amplification devices are generally used to amplify the teacher's voice, ensuring that students in all positions within the classroom can hear clearly.

[0003] In indoor teaching, the commonly used amplification equipment is the portable amplification device carried by the teacher. When this device is used, the sound quality is poor, and because the teacher moves up and down, the students' sound is unclear. Some students rely on the distance of the amplification device to judge the teacher's position, which leads to them being distracted in class and affecting the teaching quality.

[0004] Meanwhile, the wall-mounted speaker structure can cause sound to propagate through walls, affecting teaching in adjacent classrooms. To address this, we propose an indoor amplification teaching device. Summary of the Invention

[0005] The purpose of this invention is to provide an indoor amplification teaching device to solve the problems mentioned in the background art, such as the fact that existing indoor amplification teaching devices are easily affected by the distance when in use, which affects the amplification quality, and that the existing speaker propagation mode is singular.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an indoor sound amplification teaching device, including a control device and a sound receiving distribution device. The control device is wirelessly connected to an external microphone structure, and the control device is electrically connected to the speaker structure inside a plurality of sound receiving distribution devices distributed indoors through a transmission device. A load-bearing bracket is fixedly installed at the bottom of the sound receiving distribution device.

[0007] The sound distribution device includes a loudspeaker cover and a receiver box. The inner walls of both the loudspeaker cover and the receiver box are filled with sound insulation structures. The loudspeaker cover is rotatably connected to the receiver box via a drive device. A support arm mechanism is fixedly installed on the side of the loudspeaker cover and the receiver box away from the rotatable installation. Sound insulation curtains are foldably installed in the opening gaps formed on both sides of the opening of the loudspeaker cover and the receiver box. A loudspeaker hopper is integrally formed at the front end of the loudspeaker cover, and a sound hole mesh is formed on the loudspeaker cover at the coverage position corresponding to the loudspeaker hopper.

[0008] Furthermore, the sound insulation structure includes a sound insulation lining and sound insulation cotton, wherein the non-hole portions of the receiver box and the amplifier flap are fitted with sound insulation cotton, and the inner wall of the amplifier hopper is fitted with multiple sound insulation linings, wherein one end of the sound insulation lining is located at the opening of the amplifier hopper, and the other end of the sound insulation lining is located inside the amplifier flap.

[0009] Furthermore, the driving device includes a driving device correspondingly installed at the top position of the receiver box, wherein the rear end of the amplifier flip cover is integrally installed with a hinged flip plate that is rotatably fixed to the receiver box, and a driven gear is fixedly installed on one inner end of the hinged flip plate.

[0010] Furthermore, the inner wall of the receiver box is provided with a drive slot for placing the drive device, which includes a drive motor and a drive gear, wherein the driven gear meshes with the drive gear on the drive device.

[0011] Furthermore, the support arm mechanism includes a support arm bracket, a first support arm, a second support arm, a damping bushing, and a support arm fixing bearing. Two support arm fixing bearings are symmetrically installed on both sides of the bottom of the amplifier flip cover, and two support arm brackets are symmetrically fixed on both sides of the top of the receiver box. The first support arm is rotatably installed on the support arm bracket, and the second support arm is rotatably installed at the end of the first support arm via the damping bushing.

[0012] Furthermore, a fixed handle is integrally provided at the top of the speaker structure, and a sound hole is opened on the front surface of the speaker structure corresponding to the side near the speaker flap. A wiring socket is fixedly installed on one side of the speaker structure.

[0013] Furthermore, a speaker wiring hole is provided on one side of the receiver box at the position corresponding to the overlapping position of the wiring socket.

[0014] Furthermore, the bottom of the receiver box is fixed to the top of the load-bearing bracket with screws, and a bracket routing hole for placing wires is provided at the rear end of the load-bearing bracket.

[0015] Furthermore, the outer side of the soundproof curtain is fixed to both sides of the inner wall of the loudspeaker flap with screws, and the bottom outer side of the soundproof curtain is fixed to the receiver box with screws.

[0016] Furthermore, the wireless connection between the control device and the external microphone structure includes connection via Bluetooth, wireless network and local area network data communication. Vertical reflective stickers are fixedly installed on both sides of the front surface of the speaker flap, and a marker sticker is fixedly installed in the middle of the front surface of the speaker flap.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. In this solution, by distributing the speaker structure inside the classroom, a surround sound amplification effect can be achieved, thus eliminating dead zones in sound reception and greatly ensuring the quality of broadcast sound and transmission.

[0019] 2. In this solution, a controllable drive device is used to open and close the speaker cover, and the physical structure is used to achieve the conversion between two sound quality modes. The closed speaker cover can also protect the mounted device to a certain extent.

[0020] 3. By installing a sound insulation structure on the corresponding sound distribution device, sound leakage at the rear end of the sound distribution device is avoided, thereby reducing the possibility of sound transmission to adjacent classrooms through the walls of wall-mounted devices, which could affect teaching. In addition, this solution is low in cost, has a wide range of applications, and has certain promotional significance. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the sound receiving and distribution device of the present invention;

[0024] Figure 3 This is a schematic diagram of the combined structure of the sound distribution device and the speaker box of the present invention;

[0025] Figure 4 This is a schematic diagram of the speaker-amplifying flip cover structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the support arm mechanism of the present invention;

[0027] Figure 6 This is a schematic diagram of the receiver box structure of the present invention;

[0028] In the diagram: 11. Control device; 12. Load-bearing bracket; 13. Transmission device; 14. Bracket wiring hole; 2. Sound distribution device; 21. Amplifier flip cover; 22. Sound hole mesh; 23. Receiver box; 24. Speaker wiring hole; 25. Amplifier housing; 26. Vertical striped reflective sticker; 27. Marker sticker; 3. Speaker structure; 31. Wiring socket; 32. Broadcast hole; 33. Fixed handle; 41. Sound insulation curtain; 42. Sound insulation cotton; 43. Sound insulation lining; 51. Driven gear; 52. Drive device; 53. Drive slot; 54. Hinge flip plate; 61. Support arm bracket; 62. Support arm frame one; 63. Support arm frame two; 64. Damping bushing; 65. Support arm fixed bearing. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0030] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] Example 1

[0032] Reference Figures 1-6 The present invention proposes a technical solution: an indoor sound amplification teaching device, including a control device 11 and a sound receiving distribution device 2. The control device 11 is wirelessly connected to an external microphone structure, and the control device 1 is electrically connected to the speaker structure 3 inside the multiple sound receiving distribution devices 2 distributed in the room through a transmission device 13. A load-bearing bracket 12 is fixedly installed at the bottom of the sound receiving distribution device 2.

[0033] The wireless connection between the control device 11 and the external microphone structure includes one of Bluetooth, wireless network and local area network data communication. Vertical striped reflective stickers 26 are fixedly installed on both sides of the front surface of the speaker flip cover 21, and a marker sticker 27 is fixedly installed in the middle of the front surface of the speaker flip cover 21.

[0034] The sound distribution device 2 includes a loudspeaker cover 21 and a receiver box 23. The inner walls of both the loudspeaker cover 21 and the receiver box 23 are filled with sound insulation structures. The loudspeaker cover 21 is rotatably connected to the front of the receiver box 23 via a drive device. Support arm mechanisms are fixedly installed on the side of the loudspeaker cover 21 and the receiver box 23 away from the rotatable installation. Sound insulation curtains 41 are foldably installed in the opening gap formed on both sides of the opening of the loudspeaker cover 21 and the receiver box 23. A loudspeaker hopper 25 is integrally formed at the front of the loudspeaker cover 21. A sound hole mesh 22 is formed on the loudspeaker cover 21 at the coverage position of the loudspeaker hopper 25. Regarding the sound insulation curtain 41, it should be noted that the bottom of the sound insulation curtain 41 bypasses the support arm mechanism and is adhered to the inner wall of the receiver box 23. When the support part is folded, it will directly press against the sound insulation curtain 41.

[0035] The specific sound insulation structure includes a sound insulation lining 43 and sound insulation cotton 42. The non-hole parts of the receiver box 23 and the amplifier flip cover 21 are all fitted with sound insulation cotton 42. The inner wall of the amplifier hopper 25 is fitted with multiple sound insulation linings 43. One end of the sound insulation lining 43 is located at the opening of the amplifier hopper 25, and the other end of the sound insulation lining 43 is located inside the amplifier flip cover 21.

[0036] The driving device includes a driving device 52 installed at the top of the receiver box 23. The rear end of the amplifier cover 21 is integrally installed with a hinged flap 54 that is rotatably fixed to the receiver box 23. A driven gear 51 is fixedly installed on one end of the inner side of the hinged flap 54. Through the sound insulation structure correspondingly set on the receiver distribution device 2, the leakage of sound at the rear end of the receiver distribution device 2 is avoided, thereby reducing the possibility of sound transmission to the adjacent classroom through the wall and affecting teaching.

[0037] Furthermore, the inner wall of the receiver box 23 is provided with a drive slot 53 for placing the drive device 52. The drive device 52 includes a drive motor and a drive gear, wherein the driven gear 51 meshes with the drive gear on the drive device 52. It is worth noting that the drive gear on the drive device 52 is rotatably mounted inside the receiver box 23 and fixedly mounted on the output shaft of the drive motor. The aforementioned drive motor is a servo bidirectional motor, which can drive the drive device 52 to rotate forward and backward. The circuit part of the drive motor is directly connected in parallel with the speaker structure 3 and is supplied by the transmission device 13. The control device 11 can control the operation steps of the aforementioned drive motor. The support arm mechanism includes a support arm bracket 61, a first support arm frame 62, a second support arm frame 63, a damping bushing 64, and a support arm fixing bearing 65. Two support arm fixing bearings 65 are symmetrically installed on both sides of the bottom of the amplifier flip cover 21, and two support arm brackets 61 are symmetrically fixedly installed on both sides of the top of the receiver box 23. A first support arm 62 is rotatably mounted on the top. A second support arm 63 is rotatably mounted at the end of the first support arm 62 via a damping bushing 64. It should be noted that the damping bushing 64 includes a rod structure, a sleeve structure, and a damping ring structure. The rod structure is fixedly connected to the first support arm 62. The sleeve structure is installed on the inner wall of the hole in the second support arm 63. The damping ring structure is fitted into the sandwich portion between the rod structure and the sleeve structure. A fixed handle is integrally provided at the top of the speaker structure 3. The speaker structure 3 has a speaker hole 32 on the front surface of the speaker structure 3, which is close to the speaker flap 21. A wiring socket 31 is fixedly installed on one side of the speaker structure 3. To ensure the integrity of the wiring, a speaker wiring hole 24 is provided on one side of the receiver box 23 at the position where it overlaps with the wiring socket 31. The bottom of the receiver box 23 is fixed to the top of the load-bearing bracket 12 with screws. A bracket wiring hole 14 for placing wires is provided at the rear end of the load-bearing bracket 12.

[0038] The outer side of the soundproof curtain 41 is fixed to both sides of the inner wall of the amplifier flip cover 21 by screws, and the bottom outer side of the soundproof curtain 41 is fixed to the receiver box 23 by screws. Through a controllable drive device, the opening and closing of the amplifier flip cover 21 is used to realize the conversion between two sound quality modes by utilizing the physical structure. The closed amplifier flip cover 21 can also protect the hanging device to a certain extent.

[0039] The working principle and usage process of this invention: When using this type of indoor amplification teaching device, the speaker structure 3 needs to be placed inside the sound receiving distribution device 2, and wirelessly connected to the control device 11 via an external microphone. When the control device 11 receives sound, the audio signal is directly transmitted to the speaker structure 3 through the transmission device 13 and played out from the sound output port 32. The sound amplification part is provided with the following two usage modes:

[0040] 1. When the sound is emitted from the phono hole 32, it is emitted directly from the position of the sound hole mesh 22 on the closed amplifier flip cover 21. The inner wall of the receiver box 23 is equipped with a sound insulation structure, which can guide the absorbed volume to a certain extent and also isolate the sound at the back end. It should be noted that the volume absorbed by the sound insulation cotton 42 can be guided outward along the sound insulation lining 43, and the through hole structure of the sound insulation lining 43 can play a certain role in amplification.

[0041] 2. When the sound is emitted from the phono hole 32, the drive motor is controlled by the control device 11 to rotate, which in turn drives the drive gear to rotate, causing the driven gear 51 to rotate as well. Driven by the driven gear 51, the amplifier cover 21 will rotate along the hinged flap 54. When the amplifier cover 21 rotates, it will correspondingly drive the support arm 63 to rotate. With the assistance of the support arm 62, the sound insulation curtain 41 pressed under the support arm mechanism will open outward, filling the gaps on both sides of the opening of the amplifier cover 21 and the receiver box 23. At this time, the opening structure on the receiver box 23 will form a bucket-shaped structure for amplification. This amplification structure can increase the volume to a certain extent and is suitable for music teaching or video broadcasting courses.

[0042] As can be seen from the above working process, in this solution, by distributing the speaker structures 3 inside the classroom, a surround sound amplification effect can be achieved, thus eliminating dead zones in sound reception and greatly ensuring the quality of broadcast sound and transmission. Moreover, this solution is low in cost, has a wide range of applications, and has certain promotional significance.

[0043] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An indoor amplified teaching device, comprising a control device (11), characterized in that: It also includes a sound distribution device (2), the control device (11) is wirelessly connected to an external microphone structure, and the control device (11) is electrically connected to the speaker structure (3) inside a plurality of sound distribution devices (2) distributed in the room through a transmission device (13), wherein a load-bearing bracket (12) is fixedly installed at the bottom of the sound distribution device (2). The sound distribution device (2) includes a loudspeaker flap (21) and a receiver box (23). The inner walls of the loudspeaker flap (21) and the receiver box (23) are filled with sound insulation structures. The loudspeaker flap (21) is provided at the front end of the receiver box (23) and can be opened by a drive device. The loudspeaker flap (21) and the receiver box (23) are rotatably connected. The drive device controls the loudspeaker flap (21) to rotate relative to the receiver box (23) between the open position and the closed position to form two loudspeaker modes. The amplifier flap (21) and the receiver box (23) are fixedly installed with a support arm mechanism on the side away from the rotating installation. The opening gap formed on both sides of the opening of the amplifier flap (21) and the receiver box (23) is provided with a foldable sound insulation curtain (41). When the drive device controls the amplifier flap (21) to rotate to the open position, the sound insulation curtain (41) pressed under the support arm mechanism is opened outward. The sound insulation curtain (41) fills the gap on both sides of the opening of the amplifier flap (21) and the receiver box (23). The opening structure on the receiver box (23) will form a bucket-shaped structure with the amplifier flap (21) and the sound insulation curtains (41) on both sides for amplification. The front end of the speaker flap (21) is integrally provided with a speaker hopper (25), and a sound hole mesh (22) is provided on the speaker flap (21) at the position corresponding to the coverage of the speaker hopper (25). When the driving device controls the speaker flap (21) to rotate to the closed position, the sound emitted by the speaker structure is played through the position of the sound hole mesh 22 on the speaker flap (21).

2. The indoor amplification teaching device according to claim 1, characterized in that: The sound insulation structure includes a sound insulation lining (43) and sound insulation cotton (42). The non-hole portions of the receiver box (23) and the amplifier flap (21) are fitted with sound insulation cotton (42). The inner wall of the amplifier hopper (25) is fitted with multiple sound insulation linings (43). One end of the sound insulation lining (43) is located at the opening of the amplifier hopper (25), and the other end of the sound insulation lining (43) is located inside the amplifier flap (21).

3. The indoor amplification teaching device according to claim 1, characterized in that: The driving device includes a driving device (52) installed at the top of the receiver box (23), wherein the rear end of the amplifier flip cover (21) is integrally installed with a hinged flip plate (54) that is rotatably fixed to the receiver box (23), and a driven gear (51) is fixedly installed on one end of the inner side of the hinged flip plate (54).

4. The indoor amplification teaching device according to claim 3, characterized in that: The inner wall of the receiver box (23) is provided with a drive slot (53) for placing the drive device (52). The drive device (52) includes a drive motor and a drive gear, wherein the driven gear (51) meshes with the drive gear on the drive device (52).

5. The indoor amplification teaching device according to claim 1, characterized in that: The arm support mechanism includes an arm support bracket (61), an arm support frame one (62), an arm support frame two (63), a damping bushing (64), and an arm support fixing seat (65). Two arm support fixing seats (65) are symmetrically installed on the bottom sides of the amplifier flip cover (21), and two arm support brackets (61) are symmetrically fixed on the top sides of the receiver box (23). An arm support frame one (62) is rotatably installed on the arm support bracket (61), and an arm support frame two (63) is rotatably installed at the end of the arm support frame one (62) through a damping bushing (64).

6. The indoor amplification teaching device according to claim 1, characterized in that: The speaker structure (3) has a fixed handle (33) integrally provided at the top position, and the front surface of the speaker structure (3) has a broadcast hole (32) on the side close to the amplifier flip cover (21). A wiring plug (31) is fixedly installed on one side of the speaker structure (3).

7. The indoor amplification teaching device according to claim 1, characterized in that: A speaker wiring hole (24) is provided on one side of the receiver box (23) at the position corresponding to the overlapping position of the wiring socket (31).

8. The indoor amplification teaching device according to claim 1, characterized in that: The bottom of the receiver box (23) is fixed to the top of the load-bearing bracket (12) by screws, and a bracket wiring hole (14) for placing wires is provided at the rear end of the load-bearing bracket (12).

9. The indoor amplification teaching device according to claim 1, characterized in that: The outer side of the soundproof curtain (41) is fixed to both sides of the inner wall of the loudspeaker flap (21) by screws, and the bottom outer side of the soundproof curtain (41) is fixed to the receiver box (23) by screws.

10. An indoor amplification teaching device according to claim 1, characterized in that: The wireless connection between the control device (11) and the external microphone structure includes connection via Bluetooth, wireless network and local area network data communication. Vertical striped reflective stickers (26) are fixedly installed on both sides of the front surface of the speaker flap (21), and a marker sticker (27) is fixedly installed in the middle of the front surface of the speaker flap (21).

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