CN116233662A

CN116233662A - Sound box and sound wave directivity adjusting device thereof

Info

Publication number: CN116233662A
Application number: CN202211105279.0A
Authority: CN
Inventors: 杨勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2023-06-06

Abstract

The invention discloses a sound box and a sound wave directivity adjusting device thereof, wherein the sound wave directivity adjusting device comprises a shell connected with a sound outlet of a loudspeaker of the sound box, a sound inlet is arranged on a sound inlet side of the shell, a horn body is arranged in the shell, the horn body comprises a plurality of directional wave guides, the horn body is movably arranged in the shell, the position of the horn body in the shell is adjusted to enable the corresponding wave guides to output sound waves, so that the vertical directivity of the sound waves is adjusted, the positions of the different wave guides in the horn body, which are connected with the sound outlet of the loudspeaker, can be adjusted according to the requirements of environment and sound effects by the horn body, so that the vertical directivity of the sound waves is changed, so that when a spectator is located in a range close to a linear array, the sound is prevented from being too harsher, a 'blank area' between the sound boxes can be covered by adjusting the vertical directivity of each sound box, the sound wave distribution is enabled to be more uniform, and the sound waves are enabled to be softer.

Description

Sound box and sound wave directivity adjusting device thereof

Technical Field

The invention relates to the technical field of sound wave guide tubes, in particular to a sound box and a sound wave directivity adjusting device thereof.

Background

A sound box refers to a device that converts an audio signal into sound. The audio signal is amplified and then emitted back to the sound box by the sound box itself to make the sound become louder and radiate the sound to the space. It is an extremely important component of sound systems, which is responsible for the task of converting electrical signals into acoustic signals for direct listening by a person's ears.

In a traditional line array type sound box, a line sound source technology is to arrange sound sources into a line to form propagation characteristics of the line sound sources: the sound is enabled to generate specific directivity, the sound energy is controlled to be effectively radiated to a target range, the sound energy of a non-target area is weakened, the reflected sound is reduced, and the direct sound is strengthened.

However, the existing linear sound source has the defects in the prior art:

1. the linear sound source technology is mainly applied to linear array sound boxes, and due to the fixed vertical directional characteristic, when the included angle between the sound boxes is too large, a sound 'blank area' is reserved between the sound boxes, so that the frequency response consistency in the sound coverage range of the whole linear array sound box is destroyed.

2. Because of the fixed vertical directivity of the linear arrays, the maximum vertical coverage angle of a given number of linear arrays is limited when the linear arrays are used, and when the larger angle needs to be covered, only more linear array sound boxes are added to cover the linear arrays completely. For indoor space layer height or under the condition of limited outdoor hanging height, more linear array sound boxes cannot be added, so that the existing linear array cannot achieve the effect of complete coverage under the given quantity.

3. Because of the fixed vertical directivity characteristic of the linear array, the sound waves form an attenuation mode at a fixed distance, and although the narrower vertical directivity can enable the sound to be projected farther, the sound is too harsh when the front row of viewers is located in a range closer to the linear array.

There is thus a need for improvements and improvements in the art.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a sound box and an acoustic directivity adjustment device thereof.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides a sound wave directivity adjusting device of audio amplifier, includes the casing of being connected with the play sound mouth of the speaker of audio amplifier, the sound side of advancing of casing is provided with into the sound hole, set up the horn body in the casing, the horn body includes the wave guide of a plurality of directivities, the horn body activity sets up in the casing, adjusts the position of horn body at the casing and makes corresponding wave guide output sound wave to this adjusts the perpendicular directive property of sound wave.

In the sound wave directivity adjusting device of the sound box, the horn body comprises a horn shell, a plurality of longitudinally arranged first partition plates and a plurality of transversely arranged second partition plates, wherein the first partition plates and the second partition plates are intersected to form a plurality of directional wave guide tubes.

In the sound wave directivity adjusting device of the sound box, the horn shell and the first partition plates are arranged in a way of being bent to one side, and the bending radians of the horn shell and the first partition plates are different.

In the sound wave directivity adjusting device of the sound box, the first baffle plate divides the horn shell into at least three groups of directional wave guide tubes.

In the sound wave directivity adjusting device of the sound box, the horn body further comprises at least one deflector rod and at least one positioning sliding block, the deflector rod is connected with the horn shell, the positioning sliding block is arranged on the horn shell, the shell is provided with at least one sliding groove, and the positioning sliding block is arranged in the sliding groove.

In the sound wave directivity adjusting device of the sound box, a first magnetic piece is further arranged on the deflector rod, and a second magnetic piece attracted with the first magnetic piece is arranged on the shell.

In the sound wave directivity adjusting device of the sound box, the diameter of the sound inlet hole is equal to the width of the two groups of wave guide tubes.

In the sound wave directivity adjusting device of the sound box, two rotatable waveguide surfaces are arranged at the opening part of the shell, the waveguide panel is arranged at the sound outlet of the horn body, and the included angle between the two waveguide surfaces can be adjusted to adjust the horizontal directivity of sound waves.

In the sound wave directivity adjusting device of the sound box, the second separation plates are arranged at intervals of length and length.

The sound box comprises a sound box body, wherein a loudspeaker is arranged on the sound box body, the sound box further comprises the sound wave directivity adjusting device, and a sound inlet of the sound wave directivity adjusting device is connected with a sound outlet of the sound box body.

Compared with the prior art, the sound box and the sound wave directivity adjusting device thereof provided by the invention have the advantages that when the sound wave directivity adjusting device is used, sound of a loudspeaker enters the shell, the directivity of the sound wave can be limited through the wave guide of the horn body, the vertical directivity of the sound wave can be changed by adjusting the connection positions of different wave guide in the horn body and the sound outlet of the loudspeaker according to the requirements of environment and sound effect, and the vertical directivity of each sound box can be adjusted to cover the blank area between the sound boxes, so that the consistency of frequency response in the coverage area is maintained, the sound wave distribution is more uniform, and the sound is softer.

Drawings

Fig. 1 is a schematic structural diagram of a first view angle of an acoustic directivity adjustment device of a sound box according to the present invention.

Fig. 2 is a schematic structural diagram of a second view angle of the sound wave directivity adjustment device of the sound box provided by the invention.

Fig. 3 is a schematic structural view of a horn body of the sound wave directivity adjusting device of the sound box provided by the invention.

Fig. 4 is a schematic cross-sectional view of an acoustic directivity adjustment device of a sound box according to the present invention.

Fig. 5 is a schematic cross-sectional side view of a horn of the sound wave directivity adjustment device of a sound box according to the present invention.

Fig. 6 is a schematic perspective view of a horn body of the sound wave directivity adjustment device of a sound box according to the present invention.

Fig. 7 is an exploded view of the sound wave directivity adjustment device of the sound box according to the present invention.

Fig. 8 is a schematic structural diagram of a housing of the sound wave directivity adjustment device of the sound box provided by the invention.

Fig. 9 is a schematic structural diagram of a lever of the sound wave directivity adjustment device of a sound box provided by the invention in a first position.

Fig. 10 is a schematic structural diagram of a lever of the sound wave directivity adjustment device of a sound box provided by the invention in a second position.

Fig. 11 is a schematic structural view of a lever of the sound wave directivity adjustment device of a sound box provided by the invention in a third position.

Fig. 12 is a schematic structural diagram of a sound box provided by the present invention.

The drawings are marked with the following description:

sound wave directivity adjustment device 100, case 1, sound inlet 11, chute 12, positioning pin 13, second magnetic member 15, horn 2, waveguide 21, horn housing 22, first partition 23, second partition 24, lever 25, positioning hole 251, positioning hole 252, first magnetic member 253, positioning slider 26, positioning groove 27, waveguide surface 3, bracket 4, and sound box body 200

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

It is noted that when an element is referred to as being "mounted," "secured," or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

It should be noted that, in the embodiments of the present invention, terms such as left, right, up, and down are merely relative concepts or references to normal use states of the product, and should not be construed as limiting.

Referring to fig. 1, 2 and 3, the sound wave directivity adjusting device 100 of a sound box provided by the invention includes a housing 1 connected to a sound outlet of a speaker of the sound box, a sound inlet 11 is provided on a sound inlet side of the housing 1, a horn body 2 is provided in the housing 1, the horn body 2 includes a plurality of directional waveguides 21, the horn body 2 is movably disposed in the housing 1, and adjusting the position of the horn body 2 in the housing 1 enables the corresponding waveguides 21 to output sound waves, so as to adjust the vertical directivity of the sound waves. When the loudspeaker is used, sound of the loudspeaker enters the shell 1, the directivity of sound waves can be limited through the waveguide tube 21 of the horn body 2, the vertical directivity of the sound waves can be changed by adjusting the connection positions of different waveguide tubes 21 in the horn body 2 and the sound outlet of the loudspeaker according to the requirements of environment and sound effect, namely, the included angle of the sound waves in the vertical direction is adjusted, so that when a spectator is prevented from being positioned in a range close to a linear array, the sound is too harsh, in addition, the vertical directivity of each loudspeaker box is adjusted, the blank area between the loudspeaker boxes can be covered, the consistency of frequency response in the coverage area is kept, the vertical coverage range can be enlarged, the sound wave distribution is more uniform, and the sound is softer.

In addition, in this embodiment, the horn body 2 changes the vertical directivity of the sound wave into physical adjustment by adjusting the position, and does not forcibly distort the direction of the sound by the principles of an electronic circuit algorithm and the like, so that the sound is purer and the reduction degree is higher.

The horn body 2 comprises a horn shell 22, a plurality of longitudinally arranged first partition plates 23 and a plurality of transversely arranged second partition plates 24, wherein the first partition plates 23 and the second partition plates 24 are intersected to form a plurality of directional waveguides 21. The horn housing 22 and the first partition plates 23 are bent to one side, and the bending radians of the horn housing 22 and the first partition plates 23 are different (as shown in fig. 6), so that a waveguide tube 21 with different bending radians is formed, and after sound waves enter the waveguide tube 21, the different bending radians form sound wave included angles with different angles, and further, the sound outlet side and the sound inlet side of the horn body 2 are arranged in a cone shape (namely, the sound outlet side is wider, the sound inlet side is narrower), so that the sound waves have diffusivity, and the sound wave radiation surface is increased.

The first partition 23 divides the horn housing 22 into at least three sets of directional waveguides 21, so that the directivities of the three or more sets of waveguides 21 are different, for example, the directivities of the three sets of waveguides 21 are respectively 0 degrees, 15 degrees, 30 degrees, etc., and the horn housing may be specifically set as required. In this embodiment, the number of the first partition plates 23 is 5, and the horn housing 22 is divided into six groups of waveguides 21, and each two groups of waveguides 21 are a group of sound-producing channels. Of course, the grouping of the waveguides 21 is not limited to two groups of one sounding channel, and may be one or more groups of one sounding channel, and may be determined as needed, without limitation.

As shown in fig. 2, the diameter of the sound inlet 11 is equal to the width of the two sets of waveguides 21, so that when sound waves of the speaker pass through the sound inlet 11, the sound waves can only enter the horn body 2 through the two sets of waveguides 21, that is, the structure that the two sets of waveguides 21 are one set of sound producing channels is satisfied, and therefore, sound wave diffusion can be avoided, and of course, when three sets of waveguides 21 are selected as one set of sound producing channels, the diameter of the sound inlet 11 is the width of the three sets of waveguides 21, and so on.

Referring to fig. 4, 5, 6, 7 and 8, the second separators 24 are arranged at intervals, so that the long second separators 24 serve to split sound waves, and the short second separators 24 split sound waves between the long second separators 24, so as to avoid blocking the sound inlet 11 of the long separators, which results in the situation that sound waves cannot completely enter the horn body 2, and sound wave dispersion occurs.

The horn body 2 further comprises at least one deflector rod 25 and at least one positioning sliding block 26, the deflector rod 25 is connected with the horn shell 22, the positioning sliding block 26 is arranged on the horn shell 22, the shell 1 is provided with at least one sliding groove 12, the positioning sliding block 26 is arranged in the sliding groove 12, when the position of the horn body 2 is adjusted, the deflector rod 25 is shifted, the horn body 2 is adjusted to a required position, and the positioning sliding block 26 is matched with the sliding groove 12 to play a role of limiting the shifting range of the deflector rod 25.

Specifically, a positioning hole 251 is provided in the middle of the lever 25, and when the lever 25 is installed, the positioning slider 26 extends out of the positioning hole 251 and is placed in the chute 12, so that the lever 25 is connected with the horn housing 22, and the movement of the housing of the horn body 2 can be controlled by the lever 25. Further, a positioning pin 13 is disposed on the inner top surface of the horn housing 22 at the sound inlet hole 11, a limiting hole 252 is disposed at one end of the deflector rod 25, a limiting groove 27 is disposed on the top surface of the horn housing 22, and the positioning pin 13 passes through the limiting hole 252 and is disposed in the limiting groove 27, so as to limit the horn housing 22.

Furthermore, the sliding groove 12 and the limiting groove 27 are all arranged in a straight line, so that when the shift lever 25 is shifted, the horn body 2 can only move along the straight line, so that the position of the horn body 2 can be adjusted to meet the requirement of a sound generating channel, the sound inlet side of the current sound generating channel is positioned at the sound inlet hole 11, and the sound wave energy can be ensured to enter the current sound generating channel. In this example, the number of the two shift levers 25 is two, and the shift levers are disposed on the top surface and the bottom surface of the horn body 2, and the position of the horn body 2 is adjusted by the two shift levers 25, so that the phenomenon that the horn body 2 is askew can be avoided, and correspondingly, the positioning slide block 26, the chute 12, the positioning pin 13 and the limiting groove 27 are all disposed.

The dial rod 25 is further provided with a first magnetic part 253, the shell 1 is provided with a second magnetic part 15 attracted to the first magnetic part 253, and when the position of the horn body 2 is adjusted through the dial rod 25, the first magnetic part 253 and the second magnetic part 15 are attracted to play a role in positioning the horn body 2, so that the horn body 2 is prevented from being displaced due to sound wave vibration. Specifically, the number of the first magnetic parts 253 and the second magnetic parts 15 may be determined according to the number of the sounding channels, so that the first magnetic parts 253 and the second magnetic parts can be attracted when the sounding channels are adjusted, thereby positioning the horn body 2.

Preferably, two rotatable waveguide surfaces 3 are arranged at the opening of the casing 1, the waveguide surface 3 is arranged at the sound outlet of the horn body 2, the horizontal directivity of the sound wave is adjusted by adjusting the included angle between the two waveguide surfaces 3, when the sound wave is required to be transmitted to a far place, the included angle between the two waveguide surfaces 3 is reduced, otherwise, when the included angle between the waveguide surfaces 3 is increased, the distance of the sound wave transmission is relatively short, and the water width is relatively wide.

According to the embodiment, through adjusting the vertical directivity of the sound wave of the horn body 2 and the horizontal directivity of the waveguide surface 3, the coverage area of the sound wave is larger, more linear array sound boxes cannot be added under the condition that the indoor space layer height or the outdoor hanging height is limited, the maximum coverage area of the sound box group is enlarged under the condition that the waveguide is not replaced by the sound wave directivity adjusting device 100, the sound wave energy distribution is more uniform, and the sound is softer.

Specifically, the guiding surface 3 is connected to the housing 1 through two brackets 4 (as shown in fig. 1 and 7), and the guiding surface 3 is hinged to the housing 1, so that the included angle between the two guiding surfaces 3 can be freely adjusted, wherein the space between the two brackets 4 is the width of two groups of waveguides 21, namely the width of a sound generating channel, so that the horizontal directivity of the sound wave propagating through the sound generating channel can be controlled by the two guiding surfaces 3. The width of the two brackets 4 is set according to the width of the sound emitting channel, and is not limited to the width of the two sets of waveguides 21.

When the sound wave directivity adjusting device 100 is used, the vertical directivity adjustment of sound waves can be realized by adjusting the position of the horn body 2 according to the field environment and the sound effect requirement (as shown in fig. 9, 10 and 11), and the horizontal directivity adjustment of the sound waves transmitted by the horn body can be realized by the included angle between the two wave guide surfaces 3, so that the sound waves are more uniform and the sound effect is better.

Based on the sound wave directivity adjustment device of the sound box, the invention also correspondingly provides the sound box (shown in fig. 12), which comprises a sound box body 200 and the sound wave directivity adjustment device 100, wherein a loudspeaker is arranged on the sound box body 200, and a sound inlet hole 11 of the sound wave directivity adjustment device 100 is connected with a sound outlet hole of the sound box body 200. Since the sound wave directivity adjustment device 100 has been described in detail above, a detailed description thereof will be omitted.

In summary, according to the sound box and the sound wave directivity adjusting device thereof provided by the invention, when the sound wave directivity adjusting device is used, sound of a loudspeaker enters a shell, the directivity of the sound wave can be limited through the waveguide tube of the horn body, the vertical directivity of the sound wave can be changed by adjusting the connection positions of different waveguide tubes in the horn body and the sound outlet of the loudspeaker according to the requirements of environment and sound effect, namely, the included angle of the sound wave in the vertical direction is adjusted, so that when a spectator is prevented from being positioned in a range close to a linear array, the sound is excessively harsher, and moreover, by adjusting the vertical directivity of each sound box, the blank area between the sound boxes can be covered, the consistency of frequency response in the coverage area can be maintained, the vertical coverage area can be increased, the sound wave distribution is more uniform, and the sound is softer.

Furthermore, the adjustment position of the horn body in the embodiment is physically adjusted, and the direction of the sound is not forcibly distorted by the principles of an electronic circuit algorithm and the like, so that the sound is purer and the reduction degree is higher.

It will be understood that equivalents and modifications will occur to those skilled in the art in light of the present invention and their spirit, and all such modifications and substitutions are intended to be included within the scope of the present invention as defined in the following claims.

Claims

1. The utility model provides a sound wave directivity adjusting device of audio amplifier, its characterized in that, includes the casing of being connected with the play sound outlet of the speaker of audio amplifier, the sound side of advancing of casing is provided with into the sound hole, set up the horn body in the casing, the horn body includes the wave guide of a plurality of directivities, the horn body activity sets up in the casing, adjusts the position of horn body at the casing and makes corresponding wave guide output sound wave to the vertical directivity of sound wave is adjusted to this.

2. The sound wave directivity adjustment device of the sound box according to claim 1, wherein the horn body comprises a horn housing, a plurality of longitudinally arranged first partition plates and a plurality of transversely arranged second partition plates, and the first partition plates and the second partition plates are intersected and arranged to form a plurality of directional wave guides.

3. The sound wave directivity adjustment device of a sound box according to claim 2, wherein the horn housing and the first partition plates are curved to one side, and the curvature of the horn housing and the curvature of each first partition plate are different.

4. A sound wave directivity adjustment device of a sound box according to claim 3, characterized in that the first partition separates the horn housing into at least three sets of directional waveguides.

5. The sound wave directivity adjustment device of a sound box according to claim 2, wherein the horn body further comprises at least one shift lever and at least one positioning slider, the shift lever is connected with the horn housing, the positioning slider is disposed on the horn housing, the housing has at least one chute, and the positioning slider is disposed in the chute.

6. The sound wave directivity adjustment device of the sound box according to claim 5, wherein the shift lever is further provided with a first magnetic member, and the housing is provided with a second magnetic member attracted to the first magnetic member.

7. The sound wave directivity adjustment device of the sound box according to claim 2, characterized in that the diameter of the sound inlet hole is equal to the width of the two sets of waveguides.

8. The sound wave directivity adjustment device of the sound box according to claim 1, wherein two rotatable waveguide surfaces are provided at the mouth of the housing, the waveguide panel is provided at the sound outlet of the horn body, and an included angle between the two waveguide surfaces is adjustable to adjust the horizontal directivity of the sound wave.

9. The sound wave directivity adjustment device of the sound box according to claim 2, wherein the second partition plates are arranged at a long-short interval.

10. A sound box, comprising a sound box body, wherein the sound box body is provided with a loudspeaker, and the sound box is characterized by further comprising a sound wave directivity adjusting device according to any one of claims 1-9, wherein a sound inlet of the sound wave directivity adjusting device is connected with a sound outlet of the sound box body.