Sound box with strong directivity
By designing the compression chamber and air guide duct structure in the speaker, combined with the bass guide channel, the problem of the speaker's sound waves being unable to be directed is solved, long-distance linear push and focus are achieved, and sound clarity is improved.
Patent Information
- Application Number
- CN202422571967.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-24
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-10-24
AI Technical Summary
Existing speakers cannot achieve directional push and precise projection of sound waves to designated areas, resulting in inconcentrated sound propagation and affecting clarity.
The installation plate in the box and the compression baffle are used to form a compression chamber, and the sound wave compression and directional push are carried out through a long air guide duct, and a maze-type guide channel is formed by combining the bass guide channel and the guide vertical plate to improve the focus and direction accuracy of the sound waves.
The long-distance linear push of sound waves and focus on designated areas are realized, which reduces interference to the surrounding environment and improves the clarity of sound.
Smart Images
Figure CN223261614U_ABST
Abstract
Description
Technical field:
[0001] The utility model relates to the technical field of sound boxes, in particular to a sound box with strong directivity. 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 makes it impossible to 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 speaker with strong directionality. Utility model content:
[0004] The purpose of this utility model is to address the shortcomings of the existing technology and provide a speaker with strong directivity, which 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 directional sound propagation is required.
[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a speaker with strong directivity, including a box body, a mounting plate arranged in the box body, a speaker arranged on the mounting plate, a compression baffle arranged in the box body and in front of the mounting plate, and a long air duct arranged on the front end of the compression baffle, a compression cavity is formed between the mounting plate and the compression baffle, the compression baffle is provided with an air inlet hole, the long air duct is connected to the compression cavity through the air inlet hole, and the vibration membrane of the speaker faces the compression cavity.
[0006] A further improvement to the above scheme is that a tube support plate is also provided in the box body, one end of the long air duct is connected to the compression baffle, and the other end of the long air duct is connected to the tube support plate. The tube support plate is provided with an air outlet hole, and the long air duct is connected to the outside through the air outlet hole.
[0007] A further improvement to the above scheme is that the long air duct is a cylindrical structure, the aperture of one end of the long air duct connected to the compression baffle is the same as the air inlet, and the aperture of one end of the long air duct connected to the tube support plate is the same as the air outlet.
[0008] 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 long air duct.
[0009] A further improvement to the above solution is that the length of the long air duct is greater than or equal to 400 mm.
[0010] 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.
[0011] A further improvement to the above solution is that a bass guide hole is provided at the front bottom of the box, a bass guide channel is provided inside the box, and the bass guide hole is connected to the back of the speaker through the bass guide channel.
[0012] A further improvement to the above scheme is that the box is provided with a first guide vertical plate located behind the back of the speaker, a second guide vertical plate located behind the first guide vertical plate, and a guide cross plate, the first guide vertical plate being arranged on the top side wall of the box along the vertical direction, the second guide vertical plate being arranged on the guide cross plate along the vertical direction, a first guide opening being provided between the bottom of the first guide vertical plate and the guide cross plate, a second guide opening being provided between the top of the second guide vertical plate and the top side wall of the box, a third guide opening being provided between the rear end of the guide cross plate and the rear end side wall of the box, a first guide channel being formed between the first guide vertical plate and the second guide vertical plate, a second guide channel being formed between the second guide vertical plate and the rear side wall of the box, and a third guide channel being formed between the guide cross plate and the bottom side wall of the box, the first guide channel being connected to the back of the speaker through the first guide opening, the second guide channel being connected to the first guide channel through the second guide opening, the third guide channel being connected to the second guide channel through the third guide opening, and the third guide channel being connected to the outside through the bass guide hole.
[0013] A further improvement to the above solution is that a reinforcing support block is provided between the bottom of the guide transverse plate and the bottom side wall of the box body.
[0014] The beneficial effects of the utility model are as follows: the utility model provides a speaker with strong directivity, comprising a box body, a mounting plate arranged in the box body, a speaker arranged on the mounting plate, a compression baffle arranged in the box body and located in front of the mounting plate, and a long air duct arranged on the front end of the compression baffle, wherein a compression cavity is formed between the mounting plate and the compression baffle, the compression baffle is provided with an air inlet hole, the long air duct is connected to the compression cavity through the air inlet hole, and the vibration membrane of the speaker faces the compression cavity;
[0015] The utility model first greatly compresses the sound waves generated by the speaker through the compression chamber formed by the mounting plate and the compression baffle, and then pushes them in a direction through the long air duct. It can not only push the sound waves in a straight line farther, but also focus the sound well and accurately project it to a designated area, thereby reducing interference with the surrounding environment, improving the clarity of the sound, and is well suitable for use in situations where directional sound propagation is required. Description of the drawings:
[0016] Figure 1 It is a structural diagram of the present utility model.
[0017] Figure 2 It is a schematic diagram of the internal structure of the utility model.
[0018] Explanation of the accompanying drawings: box body 1, mounting plate 2, speaker 3, compression baffle 4, air inlet 41, long air duct 5, compression chamber 6, tube support plate 7, air outlet 71, bass guide hole 8, bass guide channel 9, first guide port 91, second guide port 92, third guide port 93, first guide channel 94, second guide channel 95, third guide channel 96, first guide vertical plate 10, second guide vertical plate 11, guide horizontal plate 12, reinforcement support block 13. Specific implementation method:
[0019] The present invention will be further described below with reference to the accompanying drawings. Figure 1-2 As shown, the utility model includes a box body 1, a mounting plate 2 arranged in the box body 1, a loudspeaker 3 arranged on the mounting plate 2, a compression baffle 4 arranged in the box body 1 and in front of the mounting plate 2, and a long air duct 5 arranged on the front end of the compression baffle 4, a compression chamber 6 is formed between the mounting plate 2 and the compression baffle 4, the compression baffle 4 is provided with an air inlet hole 41, the long air duct 5 is connected with the compression chamber 6 through the air inlet hole 41, and the vibration membrane of the loudspeaker 3 faces the compression chamber 6; the utility model first greatly compresses the sound waves generated by the loudspeaker 3 through the compression chamber 6 formed by the mounting plate 2 and the compression baffle 4, and then pushes them in a direction through the long air duct 5, which can not only push the sound waves in a farther straight line, but also focus the sound well and accurately project it to a designated area, reduce interference to the surrounding environment, improve the clarity of the sound, and is well suitable for use in occasions where directional sound propagation is required.
[0020] A tube support plate 7 is also provided in the box body 1. One end of the long air duct 5 is connected to the compression baffle 4, and the other end of the long air duct 5 is connected to the tube support plate 7. The tube support plate 7 is provided with an air outlet hole 71. The long air duct 5 is connected to the outside through the air outlet hole 71. The tube support plate 7 can improve the installation stability of the long air duct 5.
[0021] The long air duct 5 is a cylindrical structure. The aperture of the end of the long air duct 5 connected to the compression baffle 4 is the same as the air inlet hole 41, and the aperture of the end of the long air duct 5 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 long air duct 5, the length of the long air duct 5 is preferably greater than or equal to 400mm, and the spacing between the compression baffle 4 and the mounting plate 2 is preferably less than or equal to 35mm, which can better ensure the compression of sound waves and the long-distance pushing of sound waves.
[0022] A bass guide hole 8 is provided at the bottom front end of the box 1, and a bass guide channel 9 is provided inside the box 1. The bass guide hole 8 is connected to the back of the speaker 3 through the bass guide channel 9; through the cooperation of the bass guide hole 8 and the bass guide channel 9, the low-frequency sound waves generated backward when the speaker 3 vibrates can be guided out, thereby improving the efficiency of the speaker and increasing the sense of bass volume.
[0023] The box body 1 is provided with a first guide vertical plate 10 located behind the back of the speaker 3, a second guide vertical plate 11 located behind the first guide vertical plate 10, and a guide transverse plate 12. The first guide vertical plate 10 is arranged on the top side wall of the box body 1 in the vertical direction, and the second guide vertical plate 11 is arranged on the guide transverse plate 12 in the vertical direction. A first guide opening 91 is provided between the bottom of the first guide vertical plate 10 and the guide transverse plate 12, a second guide opening 92 is provided between the top of the second guide vertical plate 11 and the top side wall of the box body 1, and a third guide opening 93 is provided between the rear end of the guide transverse plate 12 and the rear end side wall of the box body 1. A first guide channel 94 is formed between the first guide vertical plate 10 and the second guide vertical plate 11, a second guide channel 95 is formed between the second guide vertical plate 11 and the rear side wall of the box body 1, and a third guide channel 96 is formed between the guide transverse plate 12 and the bottom side wall of the box body 1. The guide channel 96, the first guide channel 94 is connected to the back of the speaker 3 through the first guide port 91, the second guide channel 95 is connected to the first guide channel 94 through the second guide port 92, the third guide channel 96 is connected to the second guide channel 95 through the third guide port 93, and the third guide channel 96 is connected to the outside through the bass guide hole 8; when the speaker 3 of the present invention vibrates, the low-frequency sound waves generated backward pass through the first guide port 91, the first guide channel 94, the second guide port 92, the second guide channel 95, the third guide port 93, the third guide channel 96, and the bass guide hole 8 in turn. The bass guide channel 9 formed by the first guide vertical plate 10, the second guide vertical plate 11, the guide horizontal plate 12, and the box body 1 is a labyrinth guide channel, and the bass will dive deeper and the bass loudness will be higher.
[0024] A reinforcing support block 13 is provided between the bottom of the guide transverse plate 12 and the bottom side wall of the box body 1 . The reinforcing support block 13 can improve the installation stability of the guide transverse plate 12 and the entire box body.
[0025] 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 speaker with strong directivity, characterized by: The invention comprises a box body (1), a mounting plate (2) arranged in the box body (1), a loudspeaker (3) arranged on the mounting plate (2), a compression baffle (4) arranged in the box body (1) and located in front of the mounting plate (2), and a long air duct (5) arranged on the front end of the compression baffle (4); a compression chamber (6) is formed between the mounting plate (2) and the compression baffle (4); an air inlet hole (41) is provided in the compression baffle (4); the long air duct (5) is connected to the compression chamber (6) through the air inlet hole (41); and the vibration membrane of the loudspeaker (3) faces the compression chamber (6).
2. The speaker with strong directivity according to claim 1, characterized in that: A tube support plate (7) is further provided in the box body (1); one end of the long air duct (5) is connected to the compression baffle (4); the other end of the long air duct (5) is connected to the tube support plate (7); the tube support plate (7) is provided with an air outlet (71); and the long air duct (5) is connected to the outside through the air outlet (71).
3. The speaker with strong directivity according to claim 2, characterized in that: The long air duct (5) is a cylindrical structure. The aperture of one end of the long air duct (5) connected to the compression baffle (4) is the same as the air inlet (41), and the aperture of one end of the long air duct (5) connected to the tube support plate (7) is the same as the air outlet (71).
4. The speaker with strong directivity according to claim 1, characterized in that: The cross-sectional area of the compression chamber (6) is 2.5-3 times the cross-sectional area of the long air duct (5).
5. The speaker with strong directivity according to claim 1, characterized in that: The length of the long air duct (5) is greater than or equal to 400 mm.
6. The speaker with strong directivity according to claim 1, characterized in that: The distance between the compression baffle (4) and the mounting plate (2) is less than or equal to 35 mm.
7. A speaker with strong directivity according to any one of claims 1 to 6, characterized in that: A bass guide hole (8) is provided at the front bottom of the box (1), a bass guide channel (9) is provided inside the box (1), and the bass guide hole (8) is connected to the back of the speaker (3) through the bass guide channel (9).
8. The speaker with strong directivity according to claim 7, characterized in that: The box (1) is provided with a first guide vertical plate (10) located behind the back of the speaker (3), a second guide vertical plate (11) located behind the first guide vertical plate (10), and a guide transverse plate (12); the first guide vertical plate (10) is arranged on the top side wall of the box (1) in a vertical direction; the second guide vertical plate (11) is arranged on the guide transverse plate (12) in a vertical direction; a first guide opening (91) is provided between the bottom of the first guide vertical plate (10) and the guide transverse plate (12); a second guide opening (92) is provided between the top of the second guide vertical plate (11) and the top side wall of the box (1); a third guide opening (93) is provided between the rear end of the guide transverse plate (12) and the rear end side wall of the box (1); A first guide channel (94) is formed between the first guide vertical plate (10) and the second guide vertical plate (11), a second guide channel (95) is formed between the second guide vertical plate (11) and the inner rear side wall of the box body (1), and a third guide channel (96) is formed between the guide horizontal plate (12) and the inner bottom side wall of the box body (1). The first guide channel (94) is connected to the back of the speaker (3) through the first guide port (91), the second guide channel (95) is connected to the first guide channel (94) through the second guide port (92), the third guide channel (96) is connected to the second guide channel (95) through the third guide port (93), and the third guide channel (96) is connected to the outside through the bass guide hole (8).
9. The speaker with strong directivity according to claim 8, characterized in that: A reinforcing support block (13) is provided between the bottom of the guide transverse plate (12) and the inner bottom side wall of the box body (1).