Long-distance directional sound box
The design of the spiral air duct and reinforcing rib structure solves the problem of the speaker's inability to push in a directional manner and propagate over long distances, realizes the long-distance directional propagation and focusing of sound waves, and improves the sound clarity.
Patent Information
- Application Number
- CN202422657328.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-10-31
AI Technical Summary
Existing speakers are unable to achieve directional push and long-distance propagation of sound waves, and cannot focus on a designated area, resulting in insufficient sound clarity.
The spiral air duct design is combined with a speaker and a reinforcing rib structure to direct sound waves through spiral acceleration guide grooves, thereby enhancing structural stability and reducing noise interference.
It realizes the long-distance directional propagation and focusing of sound waves, improves the sound clarity and reduces the interference to the surrounding environment.
Smart Images
Figure CN223379263U_ABST
Abstract
Description
Technical field:
[0001] The utility model relates to the technical field of sound boxes, in particular to a long-distance directional sound box. Background technology:
[0002] A speaker is a device that converts audio signals into sound. Generally speaking, it refers to a speaker box or subwoofer box with a built-in power amplifier that amplifies the audio signal and then plays it back through the speaker itself, making the sound louder.
[0003] Existing traditional ordinary speakers broadcast sound in all directions, which not only limits the distance of sound wave propagation, but also cannot achieve directional sound wave propagation. In some usage scenarios, the sound needs to have a focusing function and be able to be accurately projected to a designated area. There is an urgent need for a long-distance directional speaker. Utility model content:
[0004] The purpose of this utility model is to provide a long-distance directional speaker to address the shortcomings of the existing technology. It can not only push sound waves in a straight line farther, but also focus the sound well and accurately project it to a designated area, reduce interference with the surrounding environment, improve the clarity of the sound, and is well suited for use in situations where long-distance directional sound propagation is required.
[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a long-distance directional speaker, including a box body, a speaker arranged in the box body, and a spiral air duct arranged in the box body and located in front of the speaker. The spiral air duct is a cylindrical structure, and the inner wall of the spiral air duct is integrally formed with a spiral acceleration guide groove.
[0006] A further improvement to the above solution is that reinforcing ribs are provided between the box body and the outer wall of the spiral air duct.
[0007] A further improvement to the above scheme is that a mounting plate and a compression baffle are provided in the box body, the compression baffle is located in front of the mounting plate, the speaker is arranged on the mounting plate, the spiral air duct is arranged on the compression baffle, and a compression chamber is formed between the mounting plate and the compression baffle. The compression baffle is provided with an air inlet hole, the spiral air duct is connected to the compression chamber through the air inlet hole, and the vibration membrane of the speaker faces the compression chamber.
[0008] A further improvement to the above scheme is that a tube support plate is also provided in the box body, one end of the spiral air guide tube is connected to the compression baffle, and the other end of the spiral air guide tube is connected to the tube support plate. The tube support plate is provided with an air outlet, and the spiral air guide tube is connected to the outside through the air outlet.
[0009] A further improvement to the above scheme is that rib plates are respectively provided on both sides of the outer wall of the spiral air duct, the rear ends of the two rib plates are respectively connected to the compression baffles, the front ends of the two rib plates are respectively connected to the tube support plates, one side of the two rib plates are respectively connected to the outer wall of the spiral air duct, and the other sides of the two rib plates are respectively connected to the box body.
[0010] A further improvement to the above solution is that a tube cavity is formed between the tube support plate and the compression baffle, a plurality of ventilation holes are opened on the tube support plate, and the tube cavity is connected to the outside through the ventilation holes.
[0011] A further improvement to the above solution is that the aperture of one end of the spiral air guide tube connected to the compression baffle is the same as the air inlet hole, and the aperture of one end of the spiral air guide tube connected to the tube support plate is the same as the air outlet hole.
[0012] A further improvement to the above solution is that the cross-sectional area of the compression chamber is 2.5-3 times the cross-sectional area of the spiral air duct.
[0013] A further improvement to the above solution is that the distance between the compression baffle and the mounting plate is less than or equal to 35 mm.
[0014] A further improvement to the above solution is that the length of the spiral air duct is greater than or equal to 400 mm.
[0015] The beneficial effects of the utility model are as follows: the utility model provides a long-distance directional speaker, comprising a box body, a speaker arranged in the box body, and a spiral air duct arranged in the box body and located in front of the speaker, wherein the spiral air duct is a cylindrical structure, and the inner wall of the spiral air duct is integrally formed with a spiral acceleration guide groove;
[0016] Compared with existing traditional speakers, the utility model can spirally accelerate and directionally guide the sound waves generated by the speaker through the spiral acceleration guide groove of the spiral air duct, which can not only push the sound waves in a straight line farther, but also focus the sound well and accurately project it to the designated area, reduce interference with the surrounding environment, improve the clarity of the sound, and is well suitable for use in situations where long-distance directional sound propagation is required. Description of the drawings:
[0017] Figure 1 It is a structural diagram of the present utility model.
[0018] Figure 2 It is a schematic diagram of the internal structure of the utility model.
[0019] Explanation of the accompanying drawings: box body 1, speaker 2, spiral air guide duct 3, spiral acceleration guide groove 31, mounting plate 4, compression baffle 5, air inlet 51, compression chamber 6, tube support plate 7, air outlet 71, vent 72, rib plate 8, tube cavity 9. Specific implementation method:
[0020] The present invention will be further described below with reference to the accompanying drawings. Figure 1-2 As shown, the present invention includes a box body 1, a loudspeaker 2 arranged in the box body 1, and a spiral air duct 3 arranged in the box body 1 and located in front of the loudspeaker 2. The spiral air duct 3 is a cylindrical structure, and the inner wall of the spiral air duct 3 is integrally formed with a spiral acceleration guide groove 31. Compared with the existing traditional speakers, the present invention can spirally accelerate and directionally guide the sound waves generated by the loudspeaker 2 through the spiral acceleration guide groove 31 of the spiral air duct 3, which can not only push the sound waves farther in a straight line, but also focus the sound well and accurately project it to a designated area, reduce interference with the surrounding environment, improve sound clarity, and is well suitable for use in occasions where long-distance directional sound propagation is required.
[0021] Reinforcing ribs are provided between the box body 1 and the outer wall of the spiral air duct 3. The reinforcing ribs can enhance the structural stability of the spiral air duct 3 and avoid noise caused by shaking of the spiral air duct 3, thereby better guiding the sound waves for spiral acceleration.
[0022] A mounting plate 4 and a compression baffle 5 are provided in the box body 1. The compression baffle 5 is located in front of the mounting plate 4. The speaker 2 is arranged on the mounting plate 4. The spiral air duct 3 is arranged on the compression baffle 5. A compression chamber 6 is formed between the mounting plate 4 and the compression baffle 5. The compression baffle 5 is provided with an air inlet hole 51. The spiral air duct 3 is connected with the compression chamber 6 through the air inlet hole 51. The vibrating membrane of the speaker 2 faces the compression chamber 6; the compression chamber 6 formed by the mounting plate 4 and the compression baffle 5 greatly compresses the sound waves generated by the speaker 2, and then pushes them in a direction through the spiral air duct 3, which can further accelerate the sound waves, thereby pushing the sound waves in a farther straight line, and can better realize long-distance directional sound propagation.
[0023] A tube support plate 7 is also provided in the box body 1. One end of the spiral air duct 3 is connected to the compression baffle 5, and the other end of the spiral air duct 3 is connected to the tube support plate 7. The tube support plate 7 is provided with an air outlet hole 71. The spiral air duct 3 is connected to the outside through the air outlet hole 71. The tube support plate 7 can improve the installation stability of the spiral air duct 3.
[0024] Ribs 8 are provided on both sides of the outer wall of the spiral air duct 3, the rear ends of the two ribs 8 are connected to the compression baffles 5 respectively, and the front ends of the two ribs 8 are connected to the tube support plates 7 respectively. One side of the two ribs 8 is connected to the outer wall of the spiral air duct 3, and the other sides of the two ribs 8 are connected to the box body 1 respectively; through the arrangement of the ribs 8, the structural stability of the spiral air duct 3 can be greatly improved, and the structural strength of the compression baffle 5 and the tube support plate 7 can also be enhanced, so as to better ensure that the spiral air duct 3 will not shake and the sound quality can be better guaranteed.
[0025] A tube cavity 9 is formed between the tube support plate 7 and the compression baffle 5. A plurality of vent holes 72 are provided on the tube support plate 7. The tube cavity 9 is connected to the outside through the vent holes 72. Since the compression baffle 5 will vibrate to a certain extent when compressing the sound wave, the closed tube cavity 9 formed between the tube support plate 7 and the compression baffle 5 will vibrate accordingly due to the vibration of the compression baffle 5 and generate noise. The provision of the vent holes 72 can avoid the generation of noise and ensure the overall sound quality.
[0026] The aperture of one end of the spiral air duct 3 connected to the compression baffle 5 is the same as the air inlet hole 51, and the aperture of one end of the spiral air duct 3 connected to the tube support plate 7 is the same as the air outlet hole 71; the cross-sectional area of the compression chamber 6 of the present invention is preferably 2.5-3 times the cross-sectional area of the spiral air duct 3, the spacing between the compression baffle 5 and the mounting plate 4 is preferably less than or equal to 35 mm, and the length of the spiral air duct 3 is preferably greater than or equal to 400 mm, which can better ensure the compression of sound waves and the long-distance pushing of sound waves.
[0027] Of course, the above is only a preferred embodiment of the present invention, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present invention patent application are included in the scope of the present invention patent application.
Claims
1. A long-distance directional speaker, characterized by: The invention comprises a box (1), a loudspeaker (2) arranged in the box (1), and a spiral air duct (3) arranged in the box (1) and located in front of the loudspeaker (2); the spiral air duct (3) is a cylindrical structure, and a spiral acceleration guide groove (31) is integrally formed on the inner wall of the spiral air duct (3).
2. The long-distance directional speaker according to claim 1, characterized in that: Reinforcing ribs are provided between the box body (1) and the outer wall of the spiral air guide pipe (3).
3. The long-distance directional speaker according to claim 1, characterized in that: The box body (1) is provided with a mounting plate (4) and a compression baffle (5), the compression baffle (5) is located in front of the mounting plate (4), the speaker (2) is arranged on the mounting plate (4), the spiral air guide pipe (3) is arranged on the compression baffle (5), a compression chamber (6) is formed between the mounting plate (4) and the compression baffle (5), the compression baffle (5) is provided with an air inlet hole (51), the spiral air guide pipe (3) is connected to the compression chamber (6) through the air inlet hole (51), and the vibration membrane of the speaker (2) faces the compression chamber (6).
4. The long-distance directional speaker according to claim 3, characterized in that: A tube support plate (7) is further provided in the box body (1); one end of the spiral air guide tube (3) is connected to the compression baffle (5); the other end of the spiral air guide tube (3) is connected to the tube support plate (7); the tube support plate (7) is provided with an air outlet (71); and the spiral air guide tube (3) is connected to the outside through the air outlet (71).
5. The long-distance directional speaker according to claim 4, characterized in that: Rib plates (8) are respectively provided on both sides of the outer wall of the spiral air guide tube (3); the rear ends of the two rib plates (8) are respectively connected to the compression baffle (5); the front ends of the two rib plates (8) are respectively connected to the tube support plate (7); one side of the two rib plates (8) is respectively connected to the outer wall of the spiral air guide tube (3); and the other sides of the two rib plates (8) are respectively connected to the box body (1).
6. The long-distance directional speaker according to claim 4, characterized in that: The tube support plate (7) and the compression baffle (5) enclose a tube cavity (9), a plurality of vent holes (72) are provided on the tube support plate (7), and the tube cavity (9) is connected to the outside through the vent holes (72).
7. The long-distance directional speaker according to claim 4, characterized in that: The aperture of one end of the spiral air guide tube (3) connected to the compression baffle (5) is the same as the air inlet hole (51), and the aperture of one end of the spiral air guide tube (3) connected to the tube support plate (7) is the same as the air outlet hole (71).
8. The long-distance directional speaker according to claim 3, characterized in that: The cross-sectional area of the compression chamber (6) is 2.5-3 times the cross-sectional area of the spiral air guide tube (3).
9. The long-distance directional speaker according to claim 3, characterized in that: The distance between the compression baffle (5) and the mounting plate (4) is less than or equal to 35 mm.
10. The long-distance directional speaker according to claim 1, characterized in that: The length of the spiral air guide pipe (3) is greater than or equal to 400 mm.