Sound wave diffusion device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-23
- Publication Date
- 2026-04-14
Smart Images
Figure CN121865189A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of audio equipment, and in particular to a sound wave diffusion device. Background Technology
[0002] In related technologies, a sound wave diffuser is an acoustic device used in amplifiers or sound systems to enhance the propagation and radiation of high-frequency sound waves. Existing sound wave diffusers can be categorized into vertical and horizontal types based on their diffuser panel structure. Vertical sound wave diffusers have their top and bottom walls angled. When placed vertically, the diffuser panel guides sound waves to different heights, allowing sound waves to be transmitted horizontally while simultaneously reaching audience members at varying heights in theaters or concert halls. However, the wide diffusion range of vertical sound wave diffusers can lead to significant attenuation, resulting in unclear sound reception for the audience.
[0003] In other existing technical solutions, the top and bottom walls of the diffusion panel of the horizontal sound wave diffusion device are both horizontally set. When the horizontal sound wave diffusion device is placed vertically, the diffusion panel guides the sound waves output horizontally by the waveguide unit, which can make the sound waves conduct in the horizontal plane. The diffusion panel will cause the horizontal sound wave diffusion device to be unable to conduct sound waves in the vertical direction. Therefore, the range of the sound wave diffusion direction of the horizontal sound wave diffusion device is smaller. The sound waves emitted by the horizontal sound wave diffusion device are more directional, and the sound received by the audience is clearer. However, when the audience seats of the theater or concert hall have multiple layers of seats, multiple horizontal sound wave diffusion devices need to be set up in the theater or concert hall along the height of the audience seats. This increases the cost required to set up the sound system in the theater or concert hall. Moreover, the delay adjustment between multiple horizontal sound wave diffusion devices is required to adjust the sound wave phase, which increases the difficulty of sound system debugging. Summary of the Invention
[0004] In order to ensure that audience members at different heights in the audience can receive the sound emitted by the sound wave diffusion device, and to ensure that the sound emitted by the sound wave diffusion device has good clarity, this application provides a sound wave diffusion device.
[0005] The sound wave diffusion device provided in this application adopts the following technical solution: A sound wave diffusion device includes: a plurality of waveguide units, each waveguide unit including a sound inlet and a sound outlet, the sound inlet being adapted to be connected to a sound wave input device, the waveguide units being used to adjust the propagation direction of the sound wave input by the sound wave input device, the plurality of waveguide units being sequentially connected along the height direction of the sound wave diffusion device, and the connection point of any two adjacent waveguide units having a diffusion angle, the angle values between at least two diffusion angles being different; a diffusion panel, the diffusion panel being disposed at the sound outlet of the sequentially connected plurality of waveguide units, the inner peripheral wall of the diffusion panel being used to reflect the sound wave output from the sound outlet to increase the propagation range of the sound wave, the inner peripheral wall of the diffusion panel including a top wall and a bottom wall, the top wall and the bottom wall being arranged parallel to each other, and both the top wall and the bottom wall being adapted to be placed horizontally.
[0006] By adopting the above technical solution, when the sound wave diffusion device is placed horizontally, by setting a diffusion angle between multiple waveguide units, multiple waveguide units can emit sound waves in different directions respectively. Furthermore, the horizontal setting of the top and bottom walls of the diffusion panel can limit the direction of sound wave propagation. Compared with the prior art, the sound wave diffusion device of this application can emit sound to audiences at different heights in the audience seating area, and the emitted sound has good clarity. It can reduce the number of sound wave diffusion devices in the sound system, thereby reducing the cost required to install a sound system in a theater or concert hall. The number of sound wave diffusion devices required in the sound system is 1. The sound wave diffusion device does not need to be delayed to adjust the phase of the sound wave, reducing the difficulty of debugging the sound system.
[0007] Preferably, the angle value of any one of the diffusion angles is α, and α satisfies the relationship: 155°<α<180°.
[0008] By adopting the above technical solution, the diffusion angle is set in the range of 0° to 25°. By adjusting the size of the diffusion angle at the connection between two adjacent waveguide units, the sound wave output direction of each waveguide unit can be adjusted, the diffusion angle of the sound wave in the vertical direction can be controlled, and the directivity of the sound wave in the vertical direction can be controlled, reducing the probability of the sound being reflected twice to the audience after it propagates to the ceiling, thereby improving the clarity of the sound.
[0009] Preferably, each waveguide unit includes a waveguide adjustment body and a waveguide housing. The waveguide housings of multiple waveguide units are connected in sequence. The waveguide housing has the sound inlet and the sound outlet and defines a waveguide cavity. The waveguide adjustment body is installed inside the waveguide housing, and the outer peripheral wall of the waveguide adjustment body is opposite to and spaced apart from the side wall of the waveguide cavity to form a waveguide gap. The waveguide gap is used to adjust the transmission direction of the sound wave input by the sound wave input device. The waveguide adjustment body includes a radial adjustment part and a horizontal adjustment part, which are connected and cooperate with each other. The radial adjustment part is located near the sound inlet, and the horizontal adjustment part is located near the sound outlet. The radial adjustment part is used to adjust the propagation direction of the sound wave along the radial direction of the waveguide unit, and the horizontal adjustment part is used to adjust the propagation direction of the sound wave along the horizontal direction.
[0010] By adopting the above technical solution, the inlet and the waveguide cavity are both connected, as are the outlet and the waveguide cavity. Sound waves enter through the inlet, pass through the waveguide cavity, and exit through the outlet. Through the waveguide gap formed by the interaction of the waveguide adjuster and the waveguide cavity, the sound waves are compressed within the gap. Furthermore, the sound waves can propagate along the outer peripheral wall of the waveguide adjuster and the side wall of the waveguide cavity. The waveguide gap connects the inlet and the outlet, and the direction of sound wave propagation is consistent with the extension direction of the waveguide gap. Under the action of the radial and horizontal adjustment parts of the waveguide adjuster, the sound waves are appropriately adjusted in the radial and horizontal directions of the waveguide unit, improving the directivity of sound wave propagation.
[0011] Preferably, the radial adjustment part is constructed as a cone shape, and the cross-sectional area of the radial adjustment part gradually increases from the sound inlet to the sound outlet; the outer peripheral wall of the horizontal adjustment part has a first guide plane and a second guide plane, the first guide plane and the second guide plane intersect and have an included angle, and the connection between the first guide plane and the second guide plane is provided at the end of the horizontal adjustment part near the sound outlet and extends along the height direction of the sound wave diffusion device.
[0012] By adopting the above technical solution, the radial adjustment part is constructed as a cone, which facilitates the uniform transmission of sound waves. Since there is a turning point between the radial adjustment parts, the propagation path of the sound waves is changed. Through the first guide plane and the second guide plane intersecting the outer peripheral walls of the horizontal adjustment part, the sound waves can converge to the sound outlet after passing through the horizontal adjustment part, thereby converting the sound waves from point sound waves to plane waves.
[0013] Preferably, the central axis of the waveguide adjustment body has an angle with the horizontal direction. The angle between the central axis of the waveguide adjustment body of the first waveguide unit and the horizontal direction is equal to a first preset angle, and the angle between the central axis of the waveguide adjustment body of the second waveguide unit and the horizontal direction is equal to a second preset angle. The first waveguide unit is the waveguide unit located at the highest point of the sound wave diffusion device among a plurality of waveguide units connected in sequence, and the second waveguide unit is the waveguide unit located at the lowest point of the sound wave diffusion device among a plurality of waveguide units connected in sequence.
[0014] By adopting the above technical solution, by setting the angle between the central axis of the waveguide adjustment body of the first waveguide unit and the horizontal direction to a first preset angle, the sound waves emitted by the sound wave diffusion device can cover the highest position of the audience. By setting the angle between the central axis of the waveguide adjustment body of the second waveguide unit and the horizontal direction to a second preset angle, the sound waves emitted by the sound wave diffusion device can cover the lowest position of the audience. By setting the first preset angle and the second preset angle, adjusting the angle between the central axis of the waveguide adjustment body and the horizontal direction, the sound pressure transmitted by the sound wave in a specific direction can be strengthened, the directivity of the sound wave can be improved, and the sound wave can cover areas at different heights in the audience.
[0015] Preferably, the sound wave diffusion device is provided with a housing assembly, which is composed of a first half-shell and a second half-shell. The first half-shell and the second half-shell are opposite to each other and connected along the width direction of the sound wave diffusion device. The first half-shell and the second half-shell together form a plurality of waveguide housings connected in sequence.
[0016] By adopting the above technical solution, multiple waveguide housings with waveguide cavities are formed by fixing the first half-shell and the second half-shell together, providing space for the transmission of sound waves. Both the first half-shell and the second half-shell are provided with partition plates. The partition plates of the first half-shell and the second half-shell together separate two adjacent waveguide units, which can minimize the interference of sound waves in different waveguide housings within the waveguide assembly and improve the focus and clarity of the sound.
[0017] Preferably, the first half-shell has a limiting recess, the second half-shell has a limiting protrusion, the limiting recess is opposite to the limiting protrusion, the limiting protrusion extends into the limiting recess to form a limiting groove, and the open end of the limiting groove is located on the side wall of the waveguide cavity. The outer peripheral wall of the waveguide adjustment body is provided with mounting ears, which extend into the corresponding limiting groove of the waveguide housing.
[0018] By adopting the above technical solution, the mounting ear extends into the limiting groove of the corresponding waveguide housing. The groove wall of the limiting groove and the mounting ear stop each other to restrict the movement of the waveguide adjustment body in the waveguide housing, thereby achieving the effect of positioning the waveguide adjustment body. This can prevent the waveguide adjustment body from falling out of the waveguide housing and improve the working reliability of the sound wave diffusion device.
[0019] Preferably, the diffuser panel has a clearance opening opposite to the sound outlet, the clearance opening being used to avoid sound waves. The diffuser panel also has a left side wall and a right side wall. The top wall, the left side wall, the bottom wall, and the right side wall are connected end to end along the circumferential direction of the diffuser panel. The left side wall and the right side wall both extend outwards from the diffuser panel along the radial direction of the diffuser panel and are constructed as arc-shaped surfaces.
[0020] By adopting the above technical solution, the sound waves are output from the sound outlet and diffuse horizontally through the left and right walls of the diffusion panel, making the horizontal diffusion range of the sound waves larger. Furthermore, by constructing the left and right walls as arc surfaces, the sound waves can be uniformly reflected towards the audience at different angles on the arc surfaces, so that the audience members located on the left and right sides of the audience can feel the same sound.
[0021] Preferably, the first end wall of the housing assembly opposite to the diffuser panel is constructed as an arc-shaped surface, and the second end wall of the diffuser panel opposite to the housing assembly is constructed as an arc-shaped surface, with the first end wall and the second end wall having the same curvature.
[0022] By adopting the above technical solution, the curvature of the first end wall and the second end wall are the same, ensuring that the contact surfaces of the diffuser panel and the housing assembly fit together, reducing the energy loss of sound during transmission, and ensuring the integrity and concentration of the sound waves.
[0023] Preferably, the sound wave diffusion device further includes: a vibration damping pad and a dustproof net, wherein the vibration damping pad and the dustproof net are both sandwiched between the diffusion panel and the housing assembly, the vibration damping pad is disposed close to the housing assembly, the dustproof net is disposed close to the diffusion panel, and the vibration damping pad and the dustproof net are in a stop-and-go engagement.
[0024] By adopting the above technical solutions and setting up vibration damping pads, resonance between the housing components and the diffusion panel can be prevented. By setting up dustproof nets, dust and particulate matter can be effectively prevented from entering the housing components, thereby ensuring the normal operation of the sound wave diffusion device and extending its service life.
[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting a diffusion angle between multiple waveguide units, multiple waveguide units can emit sound waves in different directions. Furthermore, the horizontal setting of the top and bottom walls of the diffusion panel can limit the direction of sound wave propagation. Compared with the prior art, the sound wave diffusion device of this application can emit sound to audiences at different heights in the audience seating area and the emitted sound has good clarity. It can reduce the number of sound wave diffusion devices in the sound system, thereby reducing the cost required to set up a sound system in a theater or concert hall. The number of sound wave diffusion devices required in the sound system is 1. The sound wave diffusion device does not need to be delayed to adjust the phase of the sound wave, which reduces the difficulty of debugging the sound system. 2. By setting the angle between the central axis of the waveguide adjustment body of the first waveguide unit and the horizontal direction to a first preset angle, the sound waves emitted by the sound wave diffusion device can cover the highest position of the audience seats. By setting the angle between the central axis of the waveguide adjustment body of the second waveguide unit and the horizontal direction to a second preset angle, the sound waves emitted by the sound wave diffusion device can cover the lowest position of the audience seats. By setting the first preset angle and the second preset angle, the angle between the central axis of the waveguide adjustment body and the horizontal direction is adjusted, thereby improving the directivity of the sound waves and enabling the sound waves to cover areas at different heights in the audience seats. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the sound wave diffusion device described in the embodiments of this application; Figure 2 This is a schematic diagram of the sound wave diffusion device described in the embodiments of this application from another angle; Figure 3 This is a schematic diagram of the housing assembly described in an embodiment of this application; Figure 4 This is a cross-sectional view of the sound wave diffusion device described in the embodiments of this application; Figure 5 This is a cross-sectional view of the sound wave diffusion device described in the embodiments of this application from another angle; Figure 6 This is a schematic diagram of the waveguide adjustment body described in the embodiments of this application; Figure 7 This is a schematic diagram of the waveguide adjustment body described in the embodiments of this application from another angle; Figure 8 This is a schematic diagram of the first half-shell as described in the embodiments of this application; Figure 9 This is a schematic diagram of the structure of the second half-shell as described in the embodiments of this application; Figure 10 This is an exploded view of the sound wave diffusion device described in the embodiments of this application.
[0027] Explanation of reference numerals in the attached figures: 100. Sound wave diffusion device; 1. Waveguide unit; 11. Waveguide gap; 12. First waveguide unit; 13. Second waveguide unit; 14. Third waveguide unit; 2. Sound inlet; 3. Sound outlet; 4. Diffuser panel; 41. Clearance opening; 5. Waveguide adjustment body; 51. Radial adjustment section; 52. Horizontal adjustment section; 521. First guide plane; 522. Second guide plane; 53. Mounting lug; 6. Waveguide housing; 61. Waveguide cavity; 7. Housing assembly; 71. First half-shell; 710. Limiting recess; 72. Second half-shell; 720. Limiting protrusion; 8. Vibration damping pads; 9. Dustproof nets. Detailed Implementation
[0028] The following is in conjunction with the appendix Figure 1 - Appendix Figure 10 This application will be described in further detail below.
[0029] This application discloses a sound wave diffusion device 100, which can be used as a horn tweeter. The sound wave diffusion device 100 can be connected to a sound wave input device, which has a sound wave input connector connected to the sound wave diffusion device 100. The sound wave diffusion device 100 is used to adjust the transmission direction of the sound wave input through the sound wave input connector to diffuse the sound along a set angle, achieving sound field coverage within a specified range. In some specific application scenarios of this application, the sound wave diffusion device 100 can be installed on a linear sound column or a matrix speaker, and the sound wave diffusion device 100 is suitable for various application venues (such as lecture halls and concert halls). The following description uses the example of the sound wave diffusion device 100 installed on a linear sound column to illustrate this application.
[0030] Reference Figures 1-10 The sound wave diffusion device 100 described in this application embodiment includes: a plurality of waveguide units 1 and a diffusion panel 4, for example in Figure 1 In the illustrated embodiment, waveguide unit 1 can be configured as three units. Of course, in other embodiments, the number of waveguide unit 1 can also be more than three. Each waveguide unit 1 has the same appearance and size, and each waveguide unit 1 includes a sound inlet 2 and a sound outlet 3. The sound inlet 2 is adapted to be connected to a sound wave input device. Specifically, the sound inlet 2 is adapted to be connected and cooperate with the sound wave input connector of the sound wave input device. The diameter of the sound inlet 2 can be set according to the size of the sound wave input connector of the sound wave input device, that is, the size of the input end of the sound wave input device matches the diameter of the sound inlet 2, ensuring that the sound wave input connector of the sound wave input device can be connected and cooperate with the sound inlet 2 of the corresponding waveguide unit 1, thereby reducing the energy loss of sound during propagation in the waveguide unit 1. In some specific embodiments of this application, the diameter of the sound inlet 2 can be set to 26mm.
[0031] Waveguide unit 1 is used to adjust the propagation direction of the sound wave input by the sound wave input device. Multiple waveguide units 1 are connected sequentially along the height direction of the sound wave diffusion device 100. It should be noted that when the sound wave diffusion device 100 is placed vertically, the height direction of the sound wave diffusion device 100 can be... Figure 1The sound wave diffuser 100 is located in the vertical direction. The connection point between any two adjacent waveguide units 1 has a diffusion angle, and the angle values between at least two diffusion angles are different. By setting a diffusion angle between the connection points of two adjacent waveguide units 1, the two adjacent waveguide units 1 can emit sound waves in different directions. Since multiple waveguide units 1 are connected sequentially along the height direction of the sound wave diffuser 100, two waveguide units 1 with diffusion angles at the connection point can emit sound waves in different height spaces, allowing spectators at different heights in the audience seating area to receive the sound emitted by the sound wave diffuser 100.
[0032] Furthermore, a diffusion panel 4 is disposed at the sound outlet 3 of the three waveguide units 1 connected in sequence. The inner peripheral wall of the diffusion panel 4 is used to reflect the sound waves output from the sound outlet 3 to increase the sound wave propagation range. The inner peripheral wall of the diffusion panel 4 includes a top wall and a bottom wall. The top wall and bottom wall of the diffusion panel 4 are arranged parallel to each other. When the sound wave diffusion device 100 is placed vertically, the top wall and bottom wall of the diffusion panel 4 are both placed horizontally. The horizontal arrangement of the top wall and bottom wall of the diffusion panel 4 can limit the direction of sound wave propagation. The top wall and bottom wall of the diffusion panel 4 can prevent the sound waves at the sound outlet 3 from propagating in the radial direction of the sound outlet 3, thereby limiting the vertical propagation angle of the sound wave diffusion device 100. This makes the range of the sound wave diffusion direction of the sound wave diffusion device 100 smaller and the directivity of the sound waves emitted by the sound wave diffusion device 100 better.
[0033] In addition, by obstructing the sound waves at the sound outlet 3 from being transmitted radially along the sound outlet 3 by the top and bottom walls of the diffusion panel 4, the sound waves can be prevented from being transmitted to the ceiling of the lecture hall or concert hall and then reflected to the audience. This can minimize the overlap between the sound waves reflected to the audience and the sound waves directly sent to the audience by the sound wave diffusion device 100, thus avoiding unclear sound received by the audience. This can further improve the clarity of the sound emitted by the sound wave diffusion device 100.
[0034] Therefore, by setting a diffusion angle between multiple waveguide units 1, multiple waveguide units 1 can emit sound waves in different directions respectively. Furthermore, the horizontal setting of the top and bottom walls of the diffusion panel 4 can limit the direction of sound wave propagation. Compared with the prior art, the sound wave diffusion device 100 of this application can emit sound to audiences at different heights in the audience seating area and the emitted sound has good clarity. It can reduce the number of sound wave diffusion devices 100 in the sound system, thereby reducing the cost required to install a sound system in a theater or concert hall. The number of sound wave diffusion devices 100 required in the sound system is 1. The sound wave diffusion device 100 does not need to be delayed to adjust the phase of the sound wave, which reduces the difficulty of debugging the sound system.
[0035] Further, see Figure 1 and Figure 4The diffuser panel 4 has a relief opening 41 that is positioned opposite to the sound outlet 3. The relief opening 41 is used to avoid interference between the sound waves output from the sound outlet 3 and the diffuser panel 4.
[0036] The diffuser panel 4 also has a left side wall and a right side wall. The top wall, left side wall, bottom wall, and right side wall are connected end to end along the circumferential direction of the diffuser panel 4. The left side wall and right side wall both extend radially outward from the diffuser panel 4 and are constructed as arc-shaped surfaces. After the sound waves are output from the sound outlet 3, they are diffused horizontally through the left side wall and right side wall of the diffuser panel 4, making the horizontal diffusion range of the sound waves larger. Furthermore, by constructing the left side wall and right side wall as arc-shaped surfaces, the sound waves can be uniformly reflected towards the audience at different angles on the arc-shaped surfaces, so that the audience members located on the left and right sides of the audience can feel the same sound.
[0037] See Figure 2 In some embodiments of this application, the angle value of any diffusion angle is α, and α satisfies the relationship: 155° < α < 180°. Figure 2 In the illustrated embodiment, three waveguide units 1 connected in sequence form two connection points, each corresponding to a diffusion angle. When the sound wave diffusion device 100 is placed vertically, from the top to the bottom of the sound wave diffusion device 100, the three waveguide units 1 are respectively the first waveguide unit 12, the third waveguide unit 14, and the second waveguide unit 13. The diffusion angle between the first waveguide unit 12 and the third waveguide unit 14 is 169°, and the diffusion angle between the third waveguide unit 14 and the second waveguide unit 13 is 159°. By adjusting the size of the diffusion angle at the connection point of two adjacent waveguide units 1, the sound wave output direction of each waveguide unit 1 can be adjusted, and the vertical diffusion angle of the sound wave diffusion device 100 can be adjusted. This controls the directivity of the sound waves in the vertical direction, reduces the probability of sound being reflected twice to the audience after propagating to the ceiling, and improves the clarity and focus of the sound. Thus, the coverage range of the sound wave diffusion device 100 in the height direction of the lecture hall or concert hall can be adjusted, allowing the sound wave diffusion device 100 to cover any level of the audience seating in the lecture hall or concert hall.
[0038] See Figure 3 , Figure 4 and Figure 6In some embodiments of this application, each waveguide unit 1 includes a waveguide adjustment body 5 and a waveguide housing 6. The waveguide housings 6 of the three waveguide units 1 are connected in sequence. The waveguide housing 6 has an inlet 2 and an outlet 3 and defines a waveguide cavity 61. The inlet 2 and the waveguide cavity 61 are connected, and the outlet 3 and the waveguide cavity 61 are connected. The sound wave is input from the inlet 2, passes through the waveguide cavity 61, and is output from the outlet 3. The waveguide adjustment body 5 is installed in the waveguide housing 6, and the outer peripheral wall of the waveguide adjustment body 5 is opposite to and spaced apart from the side wall of the waveguide cavity 61 to form a waveguide gap 11. The waveguide gap 11 is used to adjust the transmission direction of the sound wave input by the sound wave input device. The sound wave can be more concentrated and focused after passing through the waveguide gap 11. Specifically, the sound wave is compressed within the waveguide gap 11, and the sound wave can be propagated along the outer peripheral wall of the waveguide adjustment body 5 and the side wall of the waveguide cavity 61. The waveguide gap 11 is connected between the sound inlet 2 and the sound outlet 3, and the direction of sound wave propagation is consistent with the extension direction of the waveguide gap 11.
[0039] The waveguide adjustment body 5 includes a radial adjustment part 51 and a horizontal adjustment part 52. The radial adjustment part 51 and the horizontal adjustment part 52 are connected and cooperate with each other. In some preferred embodiments, the radial adjustment part 51 and the horizontal adjustment part 52 are integrally formed. That is, the radial adjustment part 51 and the horizontal adjustment part 52 can be constructed as an integral part, which can reduce the molding difficulty of the radial adjustment part 51 and the horizontal adjustment part 52, and avoid the formation of a step between the radial adjustment part 51 and the horizontal adjustment part 52 that hinders the transmission of sound waves. The radial adjustment part 51 is located near the sound inlet 2, and the horizontal adjustment part 52 is located near the sound outlet 3. The radial adjustment part 51 is used to adjust the transmission direction of sound waves in the radial direction of the waveguide unit 1, and the horizontal adjustment part 52 is used to adjust the transmission direction of sound waves in the horizontal direction. Under the action of the radial adjustment part 51 and the horizontal adjustment part 52, the sound waves are appropriately adjusted in the radial and horizontal directions of the waveguide unit 1, thereby improving the directivity of the sound wave transmission.
[0040] See Figure 4 and Figure 6 The radial adjustment part 51 is constructed as a cone, and the cross-sectional area of the radial adjustment part 51 gradually increases from the sound inlet 2 to the sound outlet 3. The sound wave is input into the waveguide housing 6 at the end of the radial adjustment part 51 with the cone apex. The cone structure enables the sound wave to be uniformly transmitted along the radial direction of the waveguide unit 1 after it is input into the waveguide unit 1, which greatly improves the smoothness of the sound wave.
[0041] The outer peripheral wall of the horizontal adjustment section 52 has a first guide plane 521 and a second guide plane 522. The first guide plane 521 and the second guide plane 522 intersect and form an angle. From the connection point between the radial adjustment section 51 and the horizontal adjustment section 52 to the sound outlet 3, the waveguide gap 11 gradually narrows, causing the sound waves to be concentrated at the sound outlet 3 after being conducted through the first guide plane 521 and the second guide plane 522. Through the first guide plane 521 and the second guide plane 522 intersecting on the outer peripheral wall of the horizontal adjustment section 52, the sound waves can be converged at the sound outlet after passing through the horizontal adjustment section 52, thereby converting the sound waves from point sound waves into plane waves. The connection point between the first guide plane 521 and the second guide plane 522 is located at the end of the horizontal adjustment section 52 near the sound outlet 3 and extends along the height direction of the sound wave diffusion device 100, which facilitates the concentrated output of the sound waves from the sound outlet 3 and improves the focusing effect of the sound waves.
[0042] Further, see Figure 1 and Figure 3 The waveguide adjustment body 5 has an angle between its central axis and the horizontal direction. The angle between the central axis of the waveguide adjustment body 5 of the first waveguide unit 12 and the horizontal direction is equal to a first preset angle. The angle between the central axis of the waveguide adjustment body 5 of the second waveguide unit 13 and the horizontal direction is equal to a second preset angle. The first waveguide unit 12 is the waveguide unit 1 located at the highest point of the sound wave diffusion device 100 among a plurality of waveguide units 1 connected in sequence. The second waveguide unit 13 is the waveguide unit 1 located at the lowest point of the sound wave diffusion device 100 among a plurality of waveguide units 1 connected in sequence. In some embodiments, the angle value of the first preset angle is β, which can be set to 5°, and the angle value of the second preset angle is γ, which can be set to 21°. By setting the angle between the central axis of the waveguide adjustment body 5 of the first waveguide unit 12 and the horizontal direction to a first preset angle, the sound waves emitted by the sound wave diffusion device 100 can cover the highest position of the audience seats in the lecture hall or concert hall. By setting the angle between the central axis of the waveguide adjustment body 5 of the second waveguide unit 13 and the horizontal direction to a second preset angle, the sound waves emitted by the sound wave diffusion device 100 can cover the lowest position of the audience seats in the lecture hall or concert hall. Thus, audience members at different heights in the audience seats of the lecture hall or concert hall can receive the sound emitted by the sound wave diffusion device 100.
[0043] See Figure 2 , Figure 3 , Figure 8 and Figure 9 The sound wave diffusion device 100 may be provided with a housing assembly 7, which consists of a first half-shell 71 and a second half-shell 72. The first half-shell 71 and the second half-shell 72 are opposite to each other and connected along the width direction of the sound wave diffusion device 100. It should be noted that the width direction of the sound wave diffusion device 100 can refer to... Figure 1 The first half-shell 71 and the second half-shell 72 together form three waveguide shells 6 connected in sequence. Both the first half-shell 71 and the second half-shell 72 are provided with partition plates. These partition plates separate adjacent waveguide units 1, thus minimizing interference between sound waves within different waveguide shells 6 within the shell assembly 7. Furthermore, the first half-shell 71 can be provided with ten connection holes, and the second half-shell 72 can be provided with ten corresponding connection holes. By passing screws through the connection holes of the first half-shell 71 and the second half-shell 72, the first half-shell 71 and the second half-shell 72 are connected together, improving the overall connection strength of the shell assembly 7. The first half-shell 71 and the second half-shell 72 can also each be provided with four connection holes for connecting the diffuser panel 4. By fixing the shell assembly 7 and the diffuser panel 4 together with screws, the connection strength of the sound wave diffuser device 100 is further improved.
[0044] See Figure 5 , Figure 7 , Figure 8 and Figure 9 The first half-shell 71 has a limiting recess 710, and the second half-shell 72 has a limiting protrusion 720. The limiting recess 710 and the limiting protrusion 720 are opposite each other, and the limiting protrusion 720 extends into the limiting recess 710 to form a limiting groove. The open end of the limiting groove is located on the side wall of the waveguide cavity 61. Furthermore, multiple limiting recesses 710 and limiting protrusions 720 can be provided; for example, the side wall of the waveguide cavity 61 can form two limiting grooves. The outer peripheral wall of the waveguide adjuster 5 is provided with two symmetrical mounting ears 53. Each mounting ear 53 extends into the corresponding limiting groove of the waveguide housing 6. The groove wall of the limiting groove abuts against the mounting ear 53 to restrict the movement of the waveguide adjuster 5 within the waveguide housing 6, thereby positioning the waveguide adjuster 5 and preventing it from falling out of the waveguide housing 6, thus improving the operational reliability of the sound wave diffusion device 100.
[0045] See Figure 1 , Figure 10 The first end wall of the housing assembly 7 opposite to the diffuser panel 4 is constructed as an arc surface, and the second end wall of the diffuser panel 4 opposite to the housing assembly 7 is constructed as an arc surface. The first end wall and the second end wall have the same curvature, which ensures that the contact surfaces of the housing assembly 7 and the diffuser panel 4 fit together, reduces the energy loss of sound during transmission, and ensures the integrity and concentration of the sound waves.
[0046] See Figure 10The sound wave diffusion device 100 may further include a vibration damping pad 8 and a dustproof net 9. Both the vibration damping pad 8 and the dustproof net 9 are sandwiched between the diffusion panel 4 and the housing assembly 7. The vibration damping pad 8 is constructed as an EVA (Ethylene Vinyl Acetate Copolymer) pad. The EVA pad is attached to the first end wall of the housing assembly 7 opposite to the diffusion panel 4. Specifically, by attaching and fixing the EVA pad to the housing assembly 7, a sealing effect is achieved to prevent the housing assembly 7 from leaking air. The EVA pad can isolate the housing assembly 7 and the diffusion panel 4, avoiding direct contact between the housing assembly 7 and the diffusion panel 4, thereby effectively reducing vibration transmission. The dustproof net 9 is located close to the diffusion panel 4 and is attached to the second end wall of the housing assembly 7 opposite to the diffusion panel 4. The dustproof net 9 can effectively filter particulate matter in the air and prevent the sound wave diffusion device 100 from being invaded by dust and pollutants. The vibration damping pad 8 and the dustproof net 9 are mutually abutting.
[0047] The implementation principle of this application embodiment is as follows: The sound inlet 2 connects to the sound input connector of the sound input device. Sound waves enter the waveguide housing 6, which contains the waveguide cavity 61, through the sound inlet 2. Within the waveguide housing 6, the sound waves propagate towards the sound outlet 3. After being compressed by the waveguide gap 11, the sound waves within the waveguide housing 6 propagate along the outer peripheral wall of the waveguide adjuster 5 and the side wall of the waveguide cavity 61. The adjusted sound waves are then output through the sound outlet 3 and finally reflected by the diffusion panel 4. This process increases the sound wave propagation range and converts the sound waves from point-source acoustic waves to plane waves. Furthermore, by adjusting the diffusion angle at the connection point of two adjacent waveguide units 1, the vertical diffusion angle of the sound waves can be controlled, reducing the probability of secondary reflections from the ceiling to the audience area and improving the focusing effect of the sound waves.
[0048] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.
Claims
1. A sound wave diffusion device, characterized in that, include: Multiple waveguide units (1), each waveguide unit (1) includes an inlet (2) and an outlet (3), the inlet (2) is adapted to be connected to a sound wave input device, the waveguide unit (1) is used to adjust the propagation direction of the sound wave input by the sound wave input device, the multiple waveguide units (1) are connected sequentially along the height direction of the sound wave diffusion device (100), and any two adjacent waveguide units (1) have a diffusion angle at the connection point, and the angle values between at least two diffusion angles are different; A diffusion panel (4) is disposed at the sound outlet (3) of a plurality of waveguide units (1) connected in sequence. The inner peripheral wall of the diffusion panel (4) is used to reflect the sound waves output from the sound outlet (3) to increase the transmission range of the sound waves. The inner peripheral wall of the diffusion panel (4) includes a top wall and a bottom wall. The top wall and the bottom wall are arranged parallel to each other, and both the top wall and the bottom wall are suitable for horizontal placement.
2. The sound wave diffusion device according to claim 1, characterized in that, The angle value of any one of the diffusion angles is α, and α satisfies the relationship: 155°<α<180°.
3. A sound wave diffusion device according to claim 1 or 2, characterized in that, Each waveguide unit (1) includes a waveguide adjustment body (5) and a waveguide housing (6). The waveguide housings (6) of multiple waveguide units (1) are connected in sequence. The waveguide housing (6) has the sound inlet (2) and the sound outlet (3) and defines a waveguide cavity (61). The waveguide adjustment body (5) is installed inside the waveguide housing (6), and the outer peripheral wall of the waveguide adjustment body (5) is opposite to and spaced apart from the side wall of the waveguide cavity (61) to form a waveguide gap (11). The waveguide gap (11) is used to adjust the transmission direction of the sound wave input by the sound wave input device. The waveguide adjustment body (5) includes a radial adjustment part (51) and a horizontal adjustment part (52). The radial adjustment part (51) and the horizontal adjustment part (52) are connected and cooperate with each other. The radial adjustment part (51) is located near the sound inlet (2), and the horizontal adjustment part (52) is located near the sound outlet (3). The radial adjustment part (51) is used to adjust the direction of sound wave propagation along the radial direction of the waveguide unit (1), and the horizontal adjustment part (52) is used to adjust the direction of sound wave propagation along the horizontal direction.
4. The sound wave diffusion device according to claim 3, characterized in that, The radial adjustment part (51) is constructed as a cone, and the cross-sectional area of the radial adjustment part (51) gradually increases from the sound inlet (2) to the sound outlet (3). The outer peripheral wall of the horizontal adjustment part (52) has a first guide plane (521) and a second guide plane (522). The first guide plane (521) and the second guide plane (522) intersect and have an included angle. The connection between the first guide plane (521) and the second guide plane (522) is located at the end of the horizontal adjustment part (52) near the sound outlet (3) and extends along the height direction of the sound wave diffusion device (100).
5. The sound wave diffusion device according to claim 3, characterized in that, The central axis of the waveguide adjustment body (5) has an angle with the horizontal direction. The angle between the central axis of the waveguide adjustment body (5) of the first waveguide unit (12) and the horizontal direction is equal to a first preset angle. The angle between the central axis of the waveguide adjustment body (5) of the second waveguide unit (13) and the horizontal direction is equal to a second preset angle. The first waveguide unit (12) is the waveguide unit (1) located at the highest point of the sound wave diffusion device (100) among a plurality of waveguide units (1) connected in sequence. The second waveguide unit (13) is the waveguide unit (1) located at the lowest point of the sound wave diffusion device (100) among a plurality of waveguide units (1) connected in sequence.
6. The sound wave diffusion device according to claim 3, characterized in that, The sound wave diffusion device (100) is provided with a housing assembly (7), which is composed of a first half-shell (71) and a second half-shell (72). The first half-shell (71) and the second half-shell (72) are opposite to each other and connected along the width direction of the sound wave diffusion device (100). The first half-shell (71) and the second half-shell (72) together form a plurality of waveguide housings (6) connected in sequence.
7. A sound wave diffusion device according to claim 6, characterized in that, The first half-shell (71) has a limiting recess (710), and the second half-shell (72) has a limiting protrusion (720). The limiting recess (710) is opposite to the limiting protrusion (720), and the limiting protrusion (720) extends into the limiting recess (710) to form a limiting groove. The open end of the limiting groove is located on the side wall of the waveguide cavity (61). The outer peripheral wall of the waveguide adjustment body (5) is provided with a mounting ear (53), which extends into the limiting groove of the corresponding waveguide cavity (61).
8. The sound wave diffusion device according to claim 1, characterized in that, The diffuser panel (4) has a clearance opening (41) opposite to the sound outlet (3). The clearance opening (41) is used to avoid sound waves. The diffuser panel (4) also has a left side wall and a right side wall. The top wall, the left side wall, the bottom wall and the right side wall are connected end to end along the circumferential direction of the diffuser panel (4). The left side wall and the right side wall both extend outward from the diffuser panel (4) along the radial direction of the diffuser panel (4) and are constructed as arc surfaces.
9. A sound wave diffusion device according to claim 6, characterized in that, The first end wall of the housing assembly (7) opposite to the diffuser panel (4) is constructed as an arc surface, and the second end wall of the diffuser panel (4) opposite to the housing assembly (7) is constructed as an arc surface, with the first end wall and the second end wall having the same curvature.
10. A sound wave diffusion device according to claim 6, characterized in that, Also includes: Vibration damping pad (8) and dustproof net (9) are sandwiched between the diffuser panel (4) and the housing assembly (7). The vibration damping pad (8) is located close to the housing assembly (7), and the dustproof net (9) is located close to the diffuser panel (4). The vibration damping pad (8) and the dustproof net (9) are in a stop-and-go fit.