KR101166794B1 - Compression driver multi-entry type loudspeaker - Google Patents

Abstract

PURPOSE: A loudspeaker of a compression driver multiple-input type having high power directivity is provided to improve directivity by minimizing sidelobe. CONSTITUTION: A loudspeaker(10) of a compression driver multiple-input type having high power directivity includes a plurality of sound source parts(200) emitting a compressed sound source and an adapter(300) combined with the plurality of sound source parts. The loudspeaker of the compression driver multiple-input type having high power directivity includes a compressed unit compressing sound sources transmitted through an adapter and an radiating part(100) radiating the sound source compressed in the compressed unit. The radiating part includes a square horn(120), a waveguide, a reflecting part(150), a plurality of support stands, and a base plate(110). The compressed unit is combined with one end of the adapter. The sound source part can be combined with the other end of the adapter.

Description

[0001] COMPRESSION DRIVER [0002] Multi-entry type loudspeaker [

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-power directional loudspeaker of a compression driver multi-input type, and more particularly to a high-power directional loudspeaker capable of transmitting sound to a long distance.

High power loudspeakers are used in various fields such as civil defense broadcasting, disaster broadcasting, broadcasting to North Korea, mobile broadcasting systems to be attached to vehicles, suppressing demonstrations.

In recent years, demands for use in special purpose fields such as suppressing and dissolving protests and deterring pirates approaching ships, fighting birds at airports, and fighting harmful animals such as wild boars have been increasing recently by improving directivity and power.

In order to realize a high power directional loudspeaker, a plurality of horn speakers are stacked and used. However, since the size of the speaker is limited to a certain size, a small horn speaker is arranged and used.

However, a small-sized horn speaker is used in a high frequency range of 600 Hz or more, and a high frequency is sucked in compared with a low frequency, so that a sound is difficult to reach to a long distance.

In addition, although a cylindrical horn is used to improve the directivity, a large diffraction occurs at a frequency of 1.5 kHz or more, and many sidelobes are generated. As a result, the directivity deteriorates and the efficient long distance transmission is not achieved.

US 6009182 A1

SUMMARY OF THE INVENTION It is an object of the present invention to provide a high power directional loudspeaker which is capable of long distance transmission even by a single speaker and is smaller in size than a conventional array speaker.

The high-power directional loudspeaker of the compression driver multi-input method according to the present invention for solving the above-mentioned problems comprises a plurality of sound sources having a sound source outlet through which a compressed sound source is emitted, and a plurality of sound sources And a plurality of sound source delivery openings formed in one end of the adapter to communicate with the sound source inlet, and a plurality of sound source delivery openings A compression unit formed with a sound source compression unit connected to the sound source delivery port at a center thereof and having a smaller inner diameter toward one side thereof, and a radiation unit provided at one end of the compression unit, wherein the sound source path through which the sound source is gradually expanded.

Alternatively, the plurality of sound source delivery ports may be arranged in a circle with respect to one point on one side of the adapter.

Or the sound source guide pin protruded on one surface of the adapter may be provided at the one point.

Alternatively, the sound source guide pin may have a conical protrusion protruding on one surface of the adapter.

Alternatively, the sound source guide pin may have a truncated cone-shaped protrusion protruding on one surface of the adapter.

Or the radiating portion may include a reflection portion surrounding the outlet and the side portion of the waveguide while being separated from the waveguide connected to the sound source compression portion and a horn surrounding the outlet and the side portion of the reflection portion while being spaced apart from the reflection portion .

Alternatively, the sound source outlet may be protruded and inserted into the sound source inlet.

Or the sound source may be a compression driver.

According to an aspect of the present invention, there is provided a high-power directional loudspeaker of a compression driver multi-input type,

A plurality of compression drivers, a plurality of compression drivers, a plurality of compression drivers, and a sound source delivery port formed at one end thereof to concentrate the sound sources transmitted from the plurality of compression drivers, and a waveguide connected to the sound source delivery port, A reflector which is spaced apart from one side of the waveguide and has one end closed and the other end opened to surround one side and the side of the waveguide; a square horn, which is expanded to one side and is open at one end and surrounds the other side and the side of the reflection, And a radiating portion.

Or a conical reflecting surface may be formed at one inner side of the reflecting portion.

Alternatively, the square horn may have a square cross section.

Or the side portion of the square horn may be formed by being inclined by 10 to 20 degrees from the center of the square horn outwardly.

Alternatively, one end of the square horn may be provided with a horizontal directing portion extending outward.

Alternatively, the sound source delivery port may be provided for each of the plurality of compression drivers, and the sound source delivery port may be arranged in a circle with respect to a point on one side of the adapter.

Or a compression unit provided between the adapter and the waveguide and having a sound source compression unit connected to the sound source delivery unit and having an inner diameter decreasing toward one side.

Or the sound source guide pin protruded on one surface of the adapter may be provided at the one point.

The high-power directional loudspeaker of the compression driver multi-input type according to the present invention can exhibit the same or better performance with a smaller size than the conventional high-output speaker of the horn arrangement type, and can improve the directivity by minimizing the side lobe, Effectively.

The technical effects of the present invention are not limited to the effects mentioned above, and other technical effects not mentioned can be clearly understood by those skilled in the art from the following description.

1 is a perspective view illustrating a high-power directional loudspeaker of a compression driver multi-input method according to an embodiment of the present invention.
2 is an exploded perspective view showing a radiating part of a high-power directional loudspeaker of a compression driver multi-input type according to an embodiment of the present invention.
3 is a cross-sectional view illustrating a spinning unit of a high-power directional loudspeaker of a compression driver multi-input scheme according to an embodiment of the present invention.
FIG. 4 is a perspective view illustrating a combined state of a sound source, an adapter, and a compression unit of a high-power directional loudspeaker of a compression driver multi-input scheme according to an embodiment of the present invention.
5 is an exploded perspective view illustrating an adapter and a compression unit of a high-power directional loudspeaker of a compression driver multi-input type according to an embodiment of the present invention.
6 is a cross-sectional view illustrating an adapter and a compression unit of a high-power directional loudspeaker of a compression driver multi-input scheme according to an embodiment of the present invention.
FIG. 7 is a diagram comparing radiation patterns of a conventional cylindrical horn loudspeaker with a high-power directional loudspeaker of a compression driver multi-input scheme according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, it should be understood that the present invention is not limited to the disclosed embodiments, but may be implemented in various forms, and the present embodiments are not intended to be exhaustive or to limit the scope of the invention to those skilled in the art. It is provided to let you know completely. The shape and the like of the elements in the drawings may be exaggerated for clarity, and the same reference numerals denote the same elements in the drawings.

1 is a perspective view illustrating a high-power directional loudspeaker of a compression driver multi-input method according to an embodiment of the present invention.

1, the high-power directional loudspeaker 10 of the compression driver multi-input method according to the embodiment of the present invention includes a plurality of sound sources 200 for emitting a compressed sound source, a plurality of sound sources 200, (Not shown in Fig. 4) for compressing the sound source transferred through the adapter 300 and a compression unit (not shown in Fig. 4) And a radiation unit 100.

FIG. 2 is an exploded perspective view illustrating a spinning unit of a high-power directional loudspeaker according to an embodiment of the present invention, and FIG. 3 is a perspective view of a high-power directional loudspeaker according to an embodiment of the present invention. Fig.

2, the radiation unit 100 includes a rectangular horn 120 for radiating sound, a waveguide 130 and a reflector 150 installed in the square horn 120 to amplify sound, A plurality of supports 141a to 141d for supporting the reflector 150 and a base plate 110 on which the square horn 120, the waveguide 130 and the plurality of supports 141a to 141d are installed.

The base plate 110 may have a circular plate shape. And a base hole 113 passing through the base plate 110 may be formed at the central portion. One end of the base hole 113 may be extended so as to protrude from the upper surface of the base plate 110.

The base plate 110 has a plurality of support base mounting holes 111a to 111d and a plurality of square horn mounting holes 112a and 112b to which the plurality of support bases 141a to 141d are fixed, May be formed. The square hole mounting holes 112a and 112b may be provided on both sides of the support base mounting holes 111a to 111d.

3, a compression unit coupling end 114 protruding from the periphery of the base hole 113 may be formed on the back surface of the base plate 110. As shown in FIG. The compression unit (not shown, see FIG. 4) may be inserted into the compression unit coupling end 114 and coupled with the base plate 110. Further, the compression unit coupling end 114 can prevent sound source leakage between the base plate 110 and the compression unit (not shown in Fig. 4).

On the other hand, the waveguide 130 is a tube member having a shape expanded to one side. The waveguide 130 can be enlarged such that the cross-sectional area of the inner space increases exponentially as one side.

The waveguide 130 may have an insertion end 131 inserted into one end of the base hole 113 of the base plate 110 at the other end thereof. One end of the base hole 113 may be formed so as to protrude upward from the upper surface of the base plate 110 to facilitate the installation of the wave guide 130.

On the other hand, the reflector 150 is a cup-shaped member whose one end is closed and the other end is opened. A reflection surface 152 may be provided on the inner surface of one end of the reflective portion 150. As shown in FIG. 3, the reflective surface 152 may protrude into the inner space of the reflective portion 150, and the protruded shape may be conical.

Similarly to the waveguide 130, the reflection portion 150 may be formed by enlarging the inner diameter so that the cross-sectional area of the inner space increases exponentially from one side to the other side.

Further, a plurality of supporting rod engaging portions 151a and 151b protruding from the other end of the reflecting portion 150 may be formed. The support base engaging portions 151a and 151b may be formed at positions corresponding to the plurality of support base mounting holes 111a to 111d formed in the base plate 110, respectively.

The reflector 150 may be positioned to cover one end and the side of the waveguide 130. Specifically, the reflective surface 152 is positioned on one side of the waveguide 130, and the conical tip of the reflective surface 152 is substantially aligned with the central axis of the waveguide 130.

The reflector 150 may be fixed to the base plate 110 by being separated from the waveguide 130 and the base plate 110 by a plurality of supports 141a to 141d while the waveguide 130 is positioned therein. One end of the support rods 141a to 141d may be coupled to the support rod coupling portions 151a and 151b of the reflection portion 150 and the other end may be coupled to the support rod installation holes 111a to 111d of the base plate 110. [

The square horn 120 may have one end opened and a space where the waveguide 130 and the reflection unit 150 are positioned and the other end may be coupled to the base plate 110.

The rectangular horn 120 may have a horizontally oriented portion 123 extending outwardly from one end thereof.

And a side portion 122 forming a space in which the waveguide 130 and the reflection portion 150 are located is provided on the inner side. The side surface portion 122 may be formed such that the cross-sectional area of the inner space increases exponentially from the other side toward the other side.

The side portion 122 may be formed such that the cross section of the inner space of the square horn 120 is rectangular. This is to widen the radiation area of the sound at the same diameter and to suppress occurrence of side lobe occurring at the time of sound emission. This is more effective when the side surface portion 122 is formed so that the cross section of the inner space of the square horn 120 is square.

The side surface portion 122 on one end side can be formed by being inclined outward by about 10 to 20 degrees with respect to the direction in which the speaker 10 is oriented. This is for the purpose of allowing the sound source emitted from the square horn 120 to reach a long distance and to spread the sound source to a wide area at the same time so that the directional angle at which the sound source spreads becomes about 10 to 20 degrees. More specifically, when the side portion 122 is formed by being inclined by about 15 degrees, the sound source may spread to a sufficient area while the sound source reaches a long distance.

The other end of the square horn 120 may have a coupling end 121 formed to contact one surface of the base plate 110 and the support rods 141a to 141d. The coupling end 121 allows the sound source passing through the waveguide 130 and the reflection unit 150 to be radiated through the square horn 120 without leaking to the outside.

The sound source entering the radiation unit 100 through the base hole 113 enters the waveguide 130 and is amplified through the inside of the waveguide 130 having a widened exponential function.

The sound source that has passed through one end of the waveguide 130 is deflected by the conical reflecting surface 152 of the reflector 150 and continues to the other end of the reflector 150. The sound source passing through the reflection unit 150 is also amplified through the inside of the reflection unit 150 that expands exponentially.

The sound source that has passed through the other end of the reflection unit 150 is again refracted while being in contact with one surface of the base plate 110, and enters the square horn 120. The sound source is amplified through the interior of the square horn 120, which expands exponentially, and is emitted through the other end of the square horn 120.

The radiation unit 100 allows the sound source to be amplified by passing through the waveguide 130, the reflection unit 150 and the square horn 120 having a larger cross-sectional area in three stages, thereby amplifying the sound source sufficiently even with a small- And can emit high output sound.

In addition, by using the square horn 120 to suppress the generation of side lobes, sound can be reached to a long distance, and the side portion 122 is formed to be inclined outward by about 10 to 20 degrees, It is possible to spread the sound source over a wide area.

Hereinafter, a sound source, an adapter, and a compression unit of a high-power directional loudspeaker of a compression driver multi-input scheme according to an embodiment of the present invention will be described.

FIG. 4 is a perspective view illustrating a coupled state of a sound source, an adapter, and a compression unit of a high-power directional loudspeaker of a compression driver multi-input scheme according to an embodiment of the present invention. FIG. 6 is a cross-sectional view illustrating an adapter and a compression unit of a high-power directional loudspeaker of a compression driver multi-input type according to an embodiment of the present invention, and FIG. 6 is an exploded perspective view of an adapter and a compression unit of a high-power directional loudspeaker.

4, a compression unit 400 may be coupled to one end of the adapter 300, and a plurality of sound sources 200 may be coupled to the other end of the adapter 300. As shown in FIG.

As the sound source unit 200, a compression driver may be used. The compression driver generally includes a magnet (not shown) that forms a magnetic field therein and a diaphragm (not shown) that vibrates by a magnetic field, a high pressure chamber (not shown) where the sound source is compressed to high pressure by vibration of the diaphragm, And a sound source outlet (not shown) through which the sound source is emitted to provide a compressed sound source. Compression drivers are widely used in conventional horn loudspeakers, and the construction and operation principle thereof are well known, so a detailed description thereof will be omitted.

4 to 6, the adapter 300 includes a plurality of sound source coupling parts 310 to which a plurality of sound source parts 200 can be coupled. The plurality of sound source coupling parts 310 may be formed by the number of the sound source parts 200.

The plurality of sound source coupling parts 310 may be annularly formed around one side of the adapter 300. The sound source coupling parts 310 may be spaced apart from each other so that the plurality of sound source parts 200 coupled to the adapter 300 do not interfere with each other.

As shown in FIG. 6, each sound source coupling unit 310 may be formed with a sound source inlet 311 to which a sound source outlet (not shown) of the sound source unit 200 is coupled. The sound source inlet 311 is recessed at the end of the sound source coupling part 310 so that the protruding sound source outlet can be inserted into the sound source inlet 311.

The sound source inlet 311 and the sound source outlet may be screwed to prevent leakage of the sound source discharged from the sound source unit 200 and to secure the connection between the sound source unit 200 and the adapter 300. [

A plurality of sound source delivery ports 320 may be circularly formed on one surface of the adapter 300 with reference to a sound source guide pin insertion port 330 positioned at the center. The sound source delivery port 320 may be connected to one sound source inlet 311.

The sound source delivery port 320 is formed by being densely packed with reference to the sound source guide pin insertion port 330 to concentrate sound sources emitted through the plurality of sound source units 200.

On one side of the adapter 300, a sound source guide pin 340 may be installed in the sound source guide pin insertion port 330 located at the center.

The sound source guide pin 340 may include an insertion portion 342 inserted into the sound source guide pin insertion hole 330 and a conical or truncated conical protrusion 341 formed at the end of the insertion portion 342. The protrusion 341 may be supported by one side of the adapter 300 and the side of the protrusion 341 may be recessed to correspond to the sound source delivery port 320.

Meanwhile, the compression unit 400 may be coupled to one surface of the adapter 300.

4 to 6, the compression unit 400 may include a sound source compression unit 410 passing through the compression unit 400 at a central portion thereof. The sound source compression unit 410 includes a first opening hole 421 formed at one end and a second opening hole 422 formed at the other end and connected to a plurality of sound source delivery ports 320 formed on one surface of the adapter 300 . The second opening hole 422 may be formed to have a diameter enough to include all of the plurality of sound source delivery ports 320 arranged in a circular shape.

The first opening hole 421 is formed to be smaller in diameter than the second opening hole 422 and is connected to the compression opening of the compression opening 410 of the sound source compression unit 410 connecting the first opening hole 421 and the second opening hole 422, May be formed so that the inner diameter gradually decreases from the second opening hole 422 to the first opening hole 421.

The sound source delivered from the plurality of sound source delivery ports 320 of the adapter 300 can be compressed once through the sound source compression unit 410. [ In addition, the sound source guide pin 340 installed on one side of the adapter 300 and inserted into the sound source compression unit 410 guides the direction of the sound source, and the compression efficiency of the sound source compression unit 410 is increased .

A base plate coupling end 430 protruding upward may be provided on one surface of the compression unit 400. The base plate coupling end 430 is inserted into the compression unit coupling end 114 formed on the back surface of the base plate 110 so that the compression unit 400 and the base plate 110 are coupled to each other, (130) can be connected.

Hereinafter, the operation of the high-power directional loudspeaker 10 of the compression driver multi-input method according to the embodiment of the present invention will be described.

When the compressed sound source is discharged from the plurality of sound source units 200, the sound source may enter the compression unit 400 through the sound source delivery port 320 through the sound source inlet port 311 of the adapter 300. The sound source passes through the sound source compressing unit 410 passing through the compression unit 400 and is compressed again, and the compressed sound source enters the wave guide 130 through the base plate 110.

After the sound source passes through the waveguide 130, the traveling direction is refracted by the reflecting surface 152 and proceeds toward the other end of the reflecting portion 150. After passing through the reflector 150, the base plate 110 again refracts the traveling direction and advances toward one end of the square horn 120 to be radiated.

When the sound source passes through the waveguide 130, the reflection unit 150, and the square horn 120, the sectional area of the channel of the sound source is continuously and exponentially expanded so that the sound source is amplified.

FIG. 7 is a diagram comparing radiation patterns of a conventional cylindrical horn loudspeaker with a high-power directional loudspeaker of a compression driver multi-input scheme according to an embodiment of the present invention.

The radiation pattern of the high-power directional loudspeaker of the compression driver multi-input type according to the embodiment of the present invention is formed such that the inlet side diameter of the square horn 120 is 34 mm and the outlet side end face is formed into a square of 380 mm * 380 mm Output directional loudspeaker 10 is formed by inclining the side portion 122 at 15 degrees outward with respect to the direction of the speaker 10. [

As shown in FIG. 7, it can be seen that the conventional cylindrical horn loudspeaker starts to have side lobes from 1.5 kHz to the side of the main lobes, and deepens at higher frequencies.

However, the developed high-power directional loudspeaker 10 of the compression driver multi-input method can be confirmed that the side lobe is slightly generated as compared with the conventional cylindrical horn loudspeaker. As a result, the directivity of the loudspeaker is remarkably improved and sound can be effectively transmitted to a long distance.

One embodiment of the invention described above and shown in the drawings should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and those skilled in the art will be able to modify the technical idea of the present invention in various forms. Accordingly, such improvements and modifications will fall within the scope of the present invention as long as they are obvious to those skilled in the art.

10: Compression driver High-power directional loudspeaker with multiple input method
100: Radiator 110: Base plate
111a to 111d: Supporting stand mounting holes 112a and 112b: Square horn mounting holes
113: Base Hole 120: Square Horn
121: coupling end 122:
123: horizontal directing part 130: wave guide
131: insertion end 141a to 141d:
150: Reflecting portions 151a and 151b:
152: reflection surface 200: sound source section
300: adapter 310: sound source coupling part
311: sound source inlet port 320: sound source delivery port
330: sound source guide pin insertion hole 340: sound source guide pin
341: protrusion 342:
400: pressure unit 410: sound source compression unit
421: first opening hole 422: second opening hole
430:

Claims (16)

A plurality of sound sources having a sound source outlet through which a compressed sound source is emitted;
A plurality of sound source coupling parts in which the plurality of sound source parts are respectively coupled to each other, a sound source inlet port formed in each of the plurality of sound source coupling parts to correspond to the sound source outlet, and a plurality of sound source transmission An adapter having a sphere;
A compression unit coupled to one end of the adapter and connected to the sound source delivery port at a center thereof and having a sound source compression unit having a smaller inner diameter toward one side; And
And a spinning unit provided at one end of the compression unit, wherein the sound source path through which the sound source passes is gradually enlarged, and a high output directive loudspeaker of the compression driver multi-input type.
The method according to claim 1,
Wherein the plurality of sound source delivery ports are arranged in a circular shape with respect to one point on one side of the adapter.
3. The method of claim 2,
And the sound source guide pin protruded on one surface of the adapter is provided at the one point.
The method of claim 3,
Wherein the sound source guide pin has a conical protrusion protruding on one surface of the adapter.
The method of claim 3,
Wherein the sound source guide pin has a truncated cone-shaped protrusion protruding on one surface of the adapter.
The method according to claim 1,
The radiating part may further include a reflection part surrounding the outlet and the side part of the wave guide while being separated from the wave guide connected to the sound source compression part and a horn surrounding the outlet and the side part of the reflection part while being spaced apart from the reflection part Features a high-power directional loudspeaker with multi-input compression driver.
The method according to claim 1,
Wherein the sound source outlet is protruded and inserted into the sound source inlet.
The method according to claim 1,
Characterized in that the sound source is a compression driver. ≪ RTI ID = 0.0 > [10] < / RTI >
A plurality of compression drivers;
An adapter coupled to the plurality of compression drivers and having a sound source delivery port formed at one end thereof to concentrate sound sources transmitted from the plurality of compression drivers;
A waveguide connected to the sound source delivery port and extending to one side of the waveguide; a reflector which is spaced apart from one side of the waveguide and has one end closed and the other end opened and surrounds one side and the side of the waveguide; And a radiating section having a square horn which is open and surrounds the other side and the side of the reflection section.
10. The method of claim 9,
And a conical reflecting surface is formed at an inner one end of the reflective portion.
10. The method of claim 9,
Wherein the square horn is formed to have a square cross-section.
10. The method of claim 9,
Wherein the side portion of the square horn is formed by being inclined by 10 to 20 degrees outward from the center of the square horn.
13. The method of claim 12,
Wherein the one end of the square horn is provided with a horizontally oriented portion extending outwardly.
10. The method of claim 9,
Wherein the sound source delivery port is provided for each of the plurality of compression drivers, and the sound source delivery port is disposed in a circular shape with respect to a point on one side of the adapter.
15. The method of claim 14,
Further comprising a compression unit provided between the adapter and the waveguide and having a sound source compression unit connected to the sound source delivery unit and having an inner diameter reduced toward one side.
15. The method of claim 14,
And the sound source guide pin protruded on one surface of the adapter is provided at the one point.

Images