Constant-directivity horn

Abstract

The utility model provides a constant directivity horn, relates to the technical field of horns, and aims to solve the technical problems of non-uniform sound amplification coverage, short transmission distance and poor sound definition of the horn in the prior art. A constant directivity horn comprises a horn body, the horn body is closed in the circumferential direction and comprises two opposite first side walls and two opposite second side walls, the distance between the two first side walls and the distance between the two second side walls are gradually increased from back to front, and the outer walls of the two first side walls are provided with connecting structures used for being connected with a bass unit. The two first side walls are provided with sounding structures corresponding to the positions of the connecting structures, wherein the sounding structures are used for sounding of the bass unit.

Description

Technical Field

[0001] This utility model relates to the field of horn technology, specifically to a constant directional horn. Background Technology

[0002] Speaker amplification is commonly installed in schools, stadiums, and other open squares, playgrounds, and spaces. However, traditional speaker amplification systems in these environments often suffer from insufficient sound transmission distance, resulting in unclear sound for distant listeners, uneven sound field coverage, poor sound clarity, and overall subpar sound quality. Furthermore, schools and stadiums are often located near residential areas. When outdoor stadium speakers amplify sound, the sound emitted not only fills the stadium but also travels to nearby residential areas from behind the speakers, severely disrupting residents' daily lives and causing noise pollution.

[0003] One reason for the above problems is that the directivity of the traditional horn used in these speakers changes with frequency, resulting in uneven sound coverage, short transmission distance, and poor coupling between the mid-high frequency and low frequency units, leading to poor sound clarity. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a constant directional horn to solve the technical problems of uneven horn sound reinforcement coverage, short transmission distance and poor sound clarity in the existing technology.

[0005] To solve the above-mentioned technical problems, this utility model provides a constant directional horn, including a horn body, which is circumferentially closed and includes two opposing first sidewalls and two opposing second sidewalls. The distance between the two first sidewalls and the distance between the two second sidewalls gradually increases from back to front. The outer walls of the two first sidewalls are provided with a connection structure for connecting with a bass unit, and the two first sidewalls are provided with a sound-emitting structure for the bass unit to emit sound at the position corresponding to the connection structure.

[0006] With the above structure, the constant directivity horn of this utility model has the following advantages: The constant directivity horn is used to control the directivity of mid-to-high frequencies. An angle is formed between the first sidewall and the second sidewall, ensuring that the sound is concentrated in a specified direction, reducing diffusion to the sides or back, and making the sound transmission distance longer. The bass unit can be connected to the horn body, and the sound can be concentrated and sent through the constant directivity horn, which more tightly combines the sound amplification effects of mid-to-high frequencies and low frequencies. It can also ensure high bass output in a compact speaker structure, with high efficiency and directionality. The sound from the front of the constant directivity horn can be better concentrated and sent in a specific direction. The sound attenuation is slow and uniform, and the sound pressure level difference between near and far distances is small, so that the sound remains clear at a distance. It can also reduce the sound from the back of the constant directivity horn to a certain extent, reducing noise.

[0007] As an improvement, the two first sidewalls are arranged symmetrically from left to right, the two second sidewalls are arranged symmetrically from top to bottom, and the two connecting structures are arranged symmetrically from left to right; with this structure, the symmetrical arrangement can further improve the directionality and directionality of the sound.

[0008] As an improvement, the included angle α of the two first side walls ranges from 50 to 70°, and the included angle β of the two second side walls ranges from 30 to 50°. With this structure, the specific horizontal and vertical coverage angles allow the mid-high frequencies to be effectively concentrated and propagated forward, while the bass attenuates quickly. This allows for a more reasonable arrangement of the speakers, with a speaker spaced approximately 15 meters apart. It also avoids the problem of uneven sound reinforcement coverage caused by the directionality of traditional horns changing with frequency.

[0009] As an improvement, the included angle α between the two first sidewalls is 60°, and the included angle β between the two second sidewalls is 40°.

[0010] As an improvement, the connection structure is a mounting frame located on the first side wall; this structure has the advantages of being simple and easy to install.

[0011] As an improvement, the sound-generating structure is a mesh-like opening; this structure facilitates the generation of low-frequency sounds without affecting mid- and high-frequency sounds.

[0012] As an improvement, a connecting plate is provided at the rear of the horn body, and several connecting posts are provided on the connecting plate; this structure facilitates the connection between the horn body and the speaker cabinet.

[0013] As an improvement, an annular flange is provided on the outer side wall of the front end of the horn body; this structure facilitates the connection between the horn body and the speaker cabinet.

[0014] As an improvement, a ring-shaped limiting plate is provided on the outer wall of the horn body; this structure matches the holes on the partition plate inside the speaker cabinet, thereby limiting the horn body and facilitating the connection between the horn body and the speaker cabinet. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a schematic diagram of the front end of this utility model.

[0017] Figure 3 This is a cross-sectional view of the present invention in the horizontal direction.

[0018] Figure 4 This is a sectional view of the present invention in the vertical direction.

[0019] Figure 5This is a three-dimensional structural schematic diagram of the present invention from another perspective.

[0020] Reference numerals: 1. Horn body; 11. First side wall; 12. Second side wall; 2. Mounting frame; 3. Mesh opening; 4. Connecting plate; 5. Connecting column; 6. Flange; 7. Limiting plate. Detailed Implementation

[0021] The following is a detailed description of a constant directional horn according to the present invention, with reference to the accompanying drawings.

[0022] like Figures 1 to 5 As shown, a constant directional horn includes a horn body 1, which is circumferentially closed and includes two opposing first sidewalls 11 and two opposing second sidewalls 12. The first sidewalls 11 and the second sidewalls 12 are both continuous planes or curved surfaces. The distance between the two first sidewalls 11 and the distance between the two second sidewalls 12 gradually increases from back to front. The outer walls of the two first sidewalls 11 are provided with connection structures for connecting to a bass unit. The two first sidewalls 11 are provided with sound-emitting structures for the bass unit to emit sound at positions corresponding to the connection structures. The bass unit includes a bass speaker.

[0023] like Figure 5 As shown, the two first sidewalls 11 are arranged symmetrically from left to right, and the two second sidewalls 12 are arranged symmetrically from top to bottom. The first sidewalls 11 and the second sidewalls 12 are distributed circumferentially. The two ends of the first sidewalls 11 are connected to the two second sidewalls 12, and the two ends of the second sidewalls 12 are connected to the two first sidewalls 11, thereby forming a circumferentially closed horn body 1. The horn body 1 is integrally formed, and the two connecting structures are arranged symmetrically from left to right.

[0024] like Figure 1 As shown, the connection structure is a mounting frame 2 located on the first side wall 11. The mounting frame 2 is a closed annular structure. Threaded holes are provided on the mounting frame 2 for connecting the bass unit to the mounting frame 2 with bolts. The sound-emitting structure is a mesh opening 3, which means that the mesh opening 3 is directly opened on the two first side walls 11, which is conducive to the emission of low-frequency sound, while not affecting the mid-high frequency sound. Specifically, the mesh opening 3 is set on the first side wall 11 corresponding to the inner circle of the mounting frame 2, so that the mesh opening 3 is located inside the inner circle of the mounting frame 2.

[0025] like Figure 3 and Figure 4As shown, the included angle α of the two first sidewalls 11 ranges from 50 to 70°, and the included angle β of the two second sidewalls 12 ranges from 30 to 50°. In this embodiment, the included angle α of the two first sidewalls 11 is 60°, and the included angle β of the two second sidewalls 12 is 40°. The specific horizontal and vertical coverage angles enable the mid-high frequencies to be effectively concentrated and propagated forward, while the low frequencies attenuate quickly. This allows for a more reasonable arrangement of the speakers, with a speaker placed approximately every 15 meters. It also avoids the problem of uneven sound reinforcement coverage caused by the directionality of traditional horns changing with frequency.

[0026] like Figure 1 and Figure 3 As shown, the rear end of the horn body 1 is provided with a connecting plate 4, and the connecting plate 4 is provided with several connecting posts 5. In this embodiment, there are two connecting posts 5 on the left and right sides. The connecting posts 5 correspond to the structure on the speaker cabinet, which facilitates the fixed connection between the horn body 1 and the speaker cabinet. In addition, the outer side wall of the front end of the horn body 1 is provided with an annular flange 6, which is used to connect the front end of the horn body 1 to the front end of the speaker cabinet. The outer side wall of the horn body 1 is provided with an annular limiting plate 7, which is located in the middle of the horn body 1, specifically between the mounting frame 2 and the connecting plate 4. A partition is provided inside the speaker cabinet, and the partition is provided with limiting holes that match the shape of the limiting plate 7. The limiting plate 7 is inserted into the limiting holes to determine the installation position of the horn body 1.

[0027] The constant-directivity horn in this invention is used to control the directivity of mid-to-high frequencies. An angle is formed between the first sidewall 11 and the second sidewall 12 to ensure that the sound is concentrated in a specified direction, reducing diffusion to the sides or back, and allowing the sound to travel further. The bass unit can be connected to the horn body 1, and the sound can be concentrated and sent through the constant-directivity horn, which more tightly combines the amplification effects of mid-to-high frequencies and low frequencies. It enables better coupling between the mid-to-high frequencies and the bass unit, making the sound clearer and more natural. It can also ensure high bass output in a compact speaker structure, with high efficiency and directionality. The sound from the front of the constant-directivity horn can be better concentrated and sent in a specific direction. The sound attenuation is slow and uniform, and the sound pressure level difference between near and far distances is small, so that the sound remains clear at a distance. It can also reduce the sound from the back of the constant-directivity horn to a certain extent, reducing noise.

[0028] This invention can be used with various units (such as tweeters, coaxial units, and mid-high frequency units), making it suitable for different product series and facilitating modular development.

[0029] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above-described embodiment. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

Claims

1. A constant directional horn, characterized in that, The horn body (1) is circumferentially closed and includes two opposing first sidewalls (11) and two opposing second sidewalls (12). The distance between the two first sidewalls (11) and the distance between the two second sidewalls (12) gradually increases from back to front. The outer walls of the two first sidewalls (11) are provided with a connection structure for connecting to the bass unit. The two first sidewalls (11) are provided with a sound-emitting structure for the bass unit to emit sound at the position corresponding to the connection structure.

2. The constant directional horn according to claim 1, characterized in that, The two first sidewalls (11) are arranged symmetrically from left to right, the two second sidewalls (12) are arranged symmetrically from top to bottom, and the two connecting structures are arranged symmetrically from left to right.

3. The constant directional horn according to claim 1, characterized in that, The included angle α between the two first sidewalls (11) ranges from 50 to 70°, and the included angle β between the two second sidewalls (12) ranges from 30 to 50°.

4. The constant directional horn according to claim 3, characterized in that, The included angle α between the two first sidewalls (11) is 60°, and the included angle β between the two second sidewalls (12) is 40°.

5. The constant directional horn according to claim 1, characterized in that, The connection structure is a mounting frame (2) provided on the first side wall (11).

6. The constant directional horn according to claim 1, characterized in that, The sound-generating structure is a mesh-like opening (3).

7. The constant directional horn according to claim 1, characterized in that, The horn body (1) has a connecting plate (4) at its rear end, and the connecting plate (4) has several connecting posts (5).

8. The constant directional horn according to claim 1, characterized in that, The horn body (1) has an annular flange (6) on the outer side wall of its front end.

9. The constant directional horn according to claim 1, characterized in that, The outer wall of the horn body (1) is provided with an annular limiting plate (7).

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