CN218103471U

CN218103471U - Acoustic waveguide of linear array sound equipment

Info

Publication number: CN218103471U
Application number: CN202222019221.6U
Authority: CN
Inventors: 陈维菲; 谢守华
Original assignee: Guoguang Electric Co Ltd
Current assignee: Guoguang Electric Co Ltd
Priority date: 2022-08-02
Filing date: 2022-08-02
Publication date: 2022-12-20
Anticipated expiration: 2032-08-02

Abstract

The utility model belongs to the technical field of sound equipment, specifically disclose a sound waveguide of linear array stereo set, this sound waveguide of linear array stereo set includes first body and second body, the second body is the same with the structure of first body, form many sound wave conduction passageways behind second body and the first body lock, the sound wave conduction passageway is the arc, the sound wave conduction passageway includes sound wave entry and sound wave export, the sound wave of sound source gets into from the sound wave entry, radiate from the sound wave export, path difference between per two sound wave conduction passageways is less than the 1/4 wavelength of the highest frequency of the sound wave that the sound source radiates out, thereby avoid the sound wave of radiating out in the adjacent sound wave conduction passageway to take place the interference phenomenon as far as possible, the high frequency sound output fidelity effect of sound source is good, and because the sound wave conduction passageway is the arc, can reduce the height of sound waveguide of linear array stereo set, the volume is more small and exquisite, space utilization is high.

Description

Acoustic waveguide of line array stereo set

Technical Field

The utility model relates to a sound equipment technical field especially relates to an acoustic waveguide of line array stereo set.

Background

Line array loudspeaker systems are now widely used in various sound reinforcement projects, such as stadiums, theaters, cinemas, conference centers, entertainment venues, and the like. A linear array loudspeaker system generally consists of a set of loudspeaker units arranged in a straight line (or nearly straight line) and corresponding structural members, with the loudspeaker units closely spaced and having the same amplitude and phase.

At present, a compression driving head is generally used in a middle-high frequency part of a linear array loudspeaker box system, and the main purpose of the compression driving head is to improve the approximation degree of an array to ideal linear sound pressure, facilitate the improvement of directivity, and simultaneously improve far-field radiation sound energy as much as possible. However, the conventional acoustic waveguide generally increases the length of the horn to reduce the difference between the length of the center portion of the horn and the length of the upper and lower edge portions of the horn, so as to make the acoustic phases at the outlet close to each other.

Therefore, there is a need for a linear array acoustic waveguide to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sound waveguide of line array stereo set, its small in size, and interference between the high frequency sound wave is less, and high frequency sound exports the difficult distortion.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides an acoustic waveguide of line array stereo set, this acoustic waveguide of line array stereo set includes:

a first body; and

the second body, the second body with the structure of first body is the same, second body lock is in on the first body, the second body with form many sound wave conduction passageways between the first body, the sound wave conduction passageway is the arc, the sound wave conduction passageway includes sound wave entry and sound wave export, and the sound source setting is in the sound wave entry, per two the path difference between the sound wave conduction passageway is less than the 1/4 wavelength of the highest frequency of the sound wave that the sound source radiated out.

Optionally, a guide protrusion is arranged in the inner cavity of the first body, one end face of the guide protrusion is connected with the wall of the inner cavity of the first body, and the other end face of the guide protrusion is connected with the second body.

Optionally, the guide protrusion is disposed along an axis of the first body, and the guide protrusion divides an inner cavity of the first body into a left cavity and a right cavity which are symmetrical.

Optionally, two side surfaces of the guide protrusion, which are close to the left chamber and the right chamber, are smooth arc surfaces, and an end surface of the guide protrusion in the thickness direction is a plane.

Optionally, a plurality of first grids are symmetrically arranged in the left chamber and the right chamber, one end of each first grid is connected with the inner cavity wall of the first body, and the other end of each first grid is connected with the second body.

Optionally, one or more first grids are arranged in the left chamber and the right chamber, and the first grids are arc-shaped.

Optionally, a second grating is arranged between the guide protrusion and the first grating, one end of the second grating is connected with the inner cavity wall of the first body, the other end of the second grating is connected with the second body, and the second grating is close to the sound wave outlet.

Optionally, the second grid is arc-shaped, and the radian of the second grid is the same as the radian of the side surface of the guide protrusion close to the left chamber or the right chamber.

Optionally, the acoustic waveguide of the line array acoustic includes a mount that removably connects the first body with the second body.

Optionally, be equipped with first mounting panel and second mounting panel on the first body, first mounting panel sets up and is being close to the one end of sound wave export, the second mounting panel sets up and is being close to the one end of sound wave entry.

The beneficial effects of the utility model are that:

the utility model provides a sound wave guide of linear array stereo set, this sound wave guide of linear array stereo set includes first body and second body, the second body is the same with the structure of first body, form many sound wave conduction passageways behind second body and the first body lock, sound wave conduction passageway is the arc, sound wave conduction passageway includes sound wave entry and sound wave export, the sound wave that the sound source radiated out gets into from the sound wave entry, from sound wave export radiation, path difference between per two sound wave conduction passageways is less than the 1/4 wavelength of the highest frequency of sound source, thereby avoid the sound wave of radiation out in the adjacent sound wave conduction passageway to take place the interference phenomenon as far as possible, the high frequency sound output fidelity effect of sound source is good, and because sound wave conduction passageway is the arc, can reduce the height of sound wave guide of linear array stereo set, the volume is smaller and more exquisite, space utilization is high.

Drawings

Fig. 1 is a schematic structural diagram of an acoustic waveguide of a line array loudspeaker provided in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a first body provided in an embodiment of the present invention;

fig. 3 is a front view of a first body provided in an embodiment of the present invention.

In the figure:

100. a first body; 110. a guide projection; 1101. a cambered surface; 120. a first grid; 130. a second grid; 140. a fixing hole; 150. a first mounting plate; 160. a second mounting plate; 200. a second body; 300. an acoustic wave conduction path; 301. a sonic inlet; 302. and (4) a sound wave outlet.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings, and are only for convenience of description and simplification of operation, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1 to 3, the present embodiment provides a sound waveguide of a linear array sound, the sound waveguide of the linear array sound includes a first body 100 and a second body 200, the second body 200 has the same structure as the first body 100, the second body 200 is fastened to the first body 100, a plurality of closed sound conduction paths 300 are formed between the second body 200 and the first body 100 after the first body 100 is fastened to the second body 200, the sound conduction paths 300 are arc-shaped, each sound conduction path 300 includes a sound inlet 301 and a sound outlet 302, all the sound conduction paths 300 share the same sound inlet 301, each sound conduction path 300 is correspondingly provided with one sound outlet 302, a sound source is disposed at the sound inlet 301, sound waves generated by the sound source enter from the sound inlet 301, then enter into one sound conduction path 300 by dividing into several paths, finally radiate out through the sound outlet 302 of the sound conduction path 300, in order to ensure high fidelity of the sound waves radiated from the sound source, a path difference between every two sound conduction paths 300 is smaller than a path difference between the sound conduction paths 300, and the sound conduction paths are closer to a space with a maximum high frequency, so that the sound conduction path of the sound waves radiated from the sound conduction paths 300 is smaller than a space with a maximum frequency, and the sound conduction path of the sound source, thereby reducing the sound array sound source, and reducing the sound radiation efficiency of the sound array sound source.

Referring to fig. 2 and 3, in the present embodiment, a guide protrusion 110 is disposed in an inner cavity of the first body 100, one end surface of the guide protrusion 110 is connected to an inner cavity wall of the first body 100, the other end surface of the guide protrusion 110 is connected to the second body 200, the guide protrusion 110 is disposed along an axis of the first body 100, the guide protrusion 110 divides the inner cavity of the first body 100 into a left chamber and a right chamber, which are symmetrical, and sound waves can enter the left chamber and the right chamber, respectively. Two side surfaces of the guide protrusion 110, which are close to the left chamber and the right chamber, are smooth transitional cambered surfaces 1101, sound waves can be radiated through the cambered surfaces 1101 in circular arc transition, a plurality of first grids 120 are symmetrically arranged in the left chamber and the right chamber, one end of each first grid 120 is connected with the inner cavity wall of the first body 100, the other end of each first grid 120 is connected with the second body 200, and the inner cavity of the first body 100 can be divided into a plurality of sound wave conduction passages 300 through the guide protrusion 110 and the first grids 120.

Because the structure of the second body 200 is the same as that of the first body 100, the cavity of the second body 200 is also provided with the guide protrusion 110 and the plurality of first grids 120, and the end surfaces of the guide protrusion 110 of the first body 100 and the guide protrusion 110 of the second body 200 along the thickness direction thereof are both flat surfaces, so that after the first body 100 is fastened with the second body 200, the end surface of the guide protrusion 110 of the first body 100 can be completely attached to the end surface of the guide protrusion 110 of the second body 200, further, the end surfaces of the first grids 120 of the first body 100 and the first grids 120 of the second body 200 along the thickness direction thereof are also flat surfaces, so that after the first body 100 is fastened with the second body 200, the end surfaces of the first grids 120 of the first body 100 can be completely attached to the end surfaces of the first grids 120 of the second body 200, and the closure of the acoustic wave conduction path 300 is good.

As an optional scheme, in this embodiment, a first grating 120 is disposed in each of the left chamber and the right chamber of the first body 100, and the first grating 120 is arc-shaped, a first grating 120 is also disposed in each of the left chamber and the right chamber of the second body 200, after the first grating 120 in the first body 100 is fastened with the first grating 120 in the second body 200, the left chamber of the first body 100 and the left chamber of the second body 200 are divided into two sound wave conduction paths 300, the right chamber of the first body 100 and the right chamber of the second body 200 are divided into two sound wave conduction paths 300, and the sound wave conduction path 300 in the left chamber and the two sound wave conduction paths 300 in the right chamber are symmetrically disposed. Of course, in other embodiments, a plurality of first grills 120 may be respectively disposed in the left chamber and the right chamber of the first body 100, and a plurality of first grills 120 may be correspondingly disposed in the left chamber and the right chamber of the second body 200, so as to divide the left chamber and the right chamber into a plurality of sound wave transmission paths 300.

As a preferable scheme, in this embodiment, a second grill 130 is disposed between the guide protrusion 110 in the first body 100 and the first grill 120, a second grill 130 is also disposed between the guide protrusion 110 in the second body 200 and the first grill 120, one end of the second grill 130 in the first body 100 is connected to an inner cavity wall of the first body 100, the other end of the second grill 130 in the first body 100 is connected to one end of the second grill 130 on the second body 200, the other end of the second grill 130 in the second body 200 is connected to an inner cavity wall of the second body 200, both the second grill 130 in the first body 100 and the second grill 130 in the second body 200 are disposed near the sonic outlet 302, further, the second grill 130 is arc-shaped, and an arc of the second grill 130 is the same as an arc of a side surface of the guide protrusion 110 near the left chamber or the right chamber. Since the acoustic wave conduction path 300 in this embodiment is arc-shaped, a twisted portion exists in the acoustic wave conduction path 300, and by the arrangement of the arc-shaped second grid 130, acoustic wave interference phenomenon at the twisted portion in the two acoustic wave conduction paths 300 close to the guide protrusion 110 can be avoided, and high fidelity of high-frequency sound of the acoustic wave is ensured.

In some embodiments, the fixing holes 140 are formed in the first body 100 and the second body 200, and the positions of the fixing holes 140 in the first body 100 correspond to the positions of the fixing holes 140 in the second body 200 in a one-to-one manner, and the sound waveguide of the line array loudspeaker includes fixing members, which are disposed through the fixing holes 140 in the first body 100 and the second body 200, and through which the first body 100 can be detachably connected to the second body 200. Illustratively, the fixing member may be a screw or a bolt, and the fixing hole 140 is a threaded hole.

Further, the first body 100 is provided with a first mounting plate 150 and a second mounting plate 160, the first mounting plate 150 is arranged at one end close to the sound wave outlet 302, the first mounting plate 150 is used for being connected with the horn, the second mounting plate 160 is arranged at one end close to the sound wave inlet 301, the second mounting plate 160 is used for being fixed with the compression head, and one end of the compression head is a sound source.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An acoustic waveguide for a line array sound, comprising:

a first body (100); and

second body (200), second body (200) with the structure of first body (100) is the same, second body (200) lock is in on first body (100), second body (200) with form many sound wave conduction path (300) between first body (100), sound wave conduction path (300) are the arc, sound wave conduction path (300) include sound wave entry (301) and sound wave export (302), and the sound source sets up sound wave entry (301) department, per two path difference between sound wave conduction path (300) is less than the 1/4 wavelength of the highest frequency of the sound wave that the sound source radiated.

2. The acoustic waveguide of a line array audio according to claim 1, wherein a guide protrusion (110) is arranged in the inner cavity of the first body (100), one end face of the guide protrusion (110) is connected with the inner cavity wall of the first body (100), and the other end face of the guide protrusion (110) is connected with the second body (200).

3. The line array acoustic waveguide of claim 2, wherein the guide boss (110) is disposed along the axis of the first body (100), the guide boss (110) dividing the internal cavity of the first body (100) into symmetrical left and right chambers.

4. The acoustic waveguide of the line array loudspeaker according to claim 3, wherein two side faces of the guide projection (110) close to the left chamber and the right chamber are rounded cambered surfaces (1101), and end faces of the guide projection (110) in the thickness direction thereof are flat.

5. The acoustic waveguide of line array audio according to claim 3, wherein a plurality of first grids (120) are symmetrically arranged in the left chamber and the right chamber, one end of each first grid (120) is connected with the inner cavity wall of the first body (100), and the other end of each first grid (120) is connected with the second body (200).

6. The line array acoustic waveguide of claim 5, wherein the first grating (120) in the left and right chambers is provided in one or more strips, the first grating (120) being arcuate.

7. The acoustic waveguide of a line array audio according to claim 5, wherein a second grating (130) is arranged between the guide protrusion (110) and the first grating (120), one end of the second grating (130) is connected with the inner cavity wall of the first body (100), the other end of the second grating (130) is connected with the second body (200), and the second grating (130) is arranged close to the sound wave outlet (302).

8. The line array acoustic waveguide of claim 7, wherein the second grating (130) is arc-shaped, and the arc of the second grating (130) is the same as the arc of the side of the guide boss (110) near the left chamber or the right chamber.

9. The acoustic waveguide of line array audio of claim 1, comprising a mount that removably connects the first body (100) with the second body (200).

10. The line array acoustic waveguide of claim 1, wherein the first body (100) has a first mounting plate (150) and a second mounting plate (160) disposed thereon, the first mounting plate (150) being disposed at an end proximate to the acoustic wave exit (302), the second mounting plate (160) being disposed at an end proximate to the acoustic wave entrance (301).