KR200477936Y1 - High-noise-absorbable noise barrier panel including air gap - Google Patents

High-noise-absorbable noise barrier panel including air gap Download PDF

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Publication number
KR200477936Y1
KR200477936Y1 KR2020140006397U KR20140006397U KR200477936Y1 KR 200477936 Y1 KR200477936 Y1 KR 200477936Y1 KR 2020140006397 U KR2020140006397 U KR 2020140006397U KR 20140006397 U KR20140006397 U KR 20140006397U KR 200477936 Y1 KR200477936 Y1 KR 200477936Y1
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KR
South Korea
Prior art keywords
plate
soundproof
sound
absorbing plate
disposed
Prior art date
Application number
KR2020140006397U
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Korean (ko)
Inventor
이완하
박진영
김용수
Original Assignee
유니슨이테크 주식회사
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Priority to KR2020140006397U priority Critical patent/KR200477936Y1/en
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Publication of KR200477936Y1 publication Critical patent/KR200477936Y1/en

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B1/86—Sound-absorbing elements slab-shaped

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  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)

Abstract

The soundproof panel includes a front plate having a plurality of through holes, a rear plate forming a storage space in association with the front plate, a first soundproof plate disposed between the front plate and the rear plate, A second soundproof plate disposed between the front plate and a first space holding member disposed between the second soundproof plate and the rear plate to form a first air layer. The first gap holding member includes a support portion and an insertion portion protruded from the support portion and inserted into the first soundproof plate or the second soundproof plate. The soundproof panel has an improved soundproofing performance by stably forming and holding an air layer in a soundproof panel.

Description

HIGH-NOISE-ABSORBABLE NOISE BARRIER PANEL INCLUDING AIR GAP < RTI ID = 0.0 >

The present invention relates to a soundproof panel, and more particularly, to a soundproof panel that can be used for a soundproof wall installed on a road.

Today, our daily lives are constantly affected by various factors such as the operation of various mechanical equipment, the operation of transportation means such as automobile, railway, subway, airplane, various works using heavy equipment, . Such noise may cause hearing loss, headache, and anxiety to the human body, which may act as a harmful factor to the health, resulting in a decrease in productivity and quality in the industrial field. Therefore, the noise inducing members should be designed so as to generate as little noise as possible, and inevitably, when the noise is generated, it is necessary to prevent the noise from propagating to the outside as much as possible.

The necessity for soundproofing like this is almost all the necessities such as roadside, railway, airport, workplace, construction site, heavy equipment, common residential facilities such as apartment or office, performance hall such as music hall or theater, indoor sports facility, It is required for the surrounding living environment.

As a typical soundproofing method, various soundproofing materials made of a material having a sound absorption or sound insulation performance are used to install a soundproofing structure such as a soundproof wall, a soundproofing partition, a soundproofing room, and a finish material for sound processing to absorb noise and block the propagation path Methods are widely used.

In the case of a soundproof wall provided around the road, soundproof panels are laminated on a support made of H-shaped steel or the like. According to the related art, the soundproof panel includes a sound absorbing plate disposed between the front plate and the rear plate, and an air layer is formed between the sound absorbing plate and the rear plate to increase the sound insulation performance. However, the sound-absorbing panel is easy to move during the transportation and installation of the sound-absorbing panel, and when the position of the sound-absorbing plate is not fixed, the air layer may not be stably formed and soundproofing performance may be deteriorated.

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a soundproof panel including an air layer so as to improve soundproofing performance.

A soundproof panel according to an embodiment of the present invention includes a front plate having a plurality of through holes, a rear plate coupled with the front plate to form a storage space, a first soundproof plate disposed between the front plate and the rear plate, A second soundproof plate disposed between the first soundproof plate and the front plate, and a first space holding member disposed between the second soundproof plate and the rear plate to form a first air layer. The first gap holding member includes a support portion and an insertion portion protruded from the support portion and inserted into the first soundproof plate or the second soundproof plate.

In one embodiment, the first soundproof plate and the second soundproof plate include polyester, and the polyester density of the second soundproof plate is higher than the polyester density of the first soundproof plate.

In one embodiment, the first soundproof plate is thicker than the second soundproof plate.

In one embodiment, the first gap retaining member is disposed between the first soundproof plate and the rear plate, and the insertion portion of the first gap retaining member is inserted into the first soundproof plate.

In one embodiment, the soundproof panel further includes a second gap retaining member disposed between the first soundproof plate and the second soundproof plate to form a second air layer.

In one embodiment, the first gap retaining member is disposed between the first soundproof plate and the second soundproof plate.

In one embodiment, the first gap maintaining member further includes a support protrusion having a width smaller than that of the support portion and protruding from the support portion in a direction opposite to the insertion portion.

The soundproof panel according to the present invention can improve soundproofing performance by stably forming and maintaining an air layer in a soundproof panel.

In addition, the gap holding member for holding the air layer is easy to assemble and can be stably fixed in the soundproof panel.

FIG. 1 is a perspective view illustrating a soundproof wall provided with a soundproof panel according to an embodiment of the present invention.
2 is a front view showing a soundproof panel according to an embodiment of the present invention.
3 is a cross-sectional view illustrating a soundproof panel according to an embodiment of the present invention.
4 is an enlarged sectional view of the region A in Fig.
5 is a front view showing the first soundproof plate combined with the first gap retaining member;
6 is a perspective view showing another embodiment of the first gap keeping member.
7 and 8 are sectional views showing a soundproof panel according to another embodiment of the present invention.

Hereinafter, a soundproof panel according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It should be understood, however, that the appended claims are not intended to limit the invention to the particular forms disclosed, but to include all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing. In the accompanying drawings, the dimensions of the structures are enlarged from the actual size in order to clarify the present invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a part or a combination thereof is described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

FIG. 1 is a perspective view illustrating a soundproof wall provided with a soundproof panel according to an embodiment of the present invention. 2 is a front view showing a soundproof panel according to an embodiment of the present invention. 3 is a cross-sectional view illustrating a soundproof panel according to an embodiment of the present invention.

Referring to FIG. 1, the sound barrier includes a soundproof panel 100 and a panel support 10. The soundproof panel 100 is disposed in a direction substantially perpendicular to the paper surface, and a plurality of soundproof panels are stacked in the vertical direction.

The panel support 10 supports the soundproof panels 100. The panel support 10 may be made of H-shaped steel or the like. The panel supporting portion 10 is fixedly coupled to a fixing portion formed on the paper or the ground. The soundproofing panels 100 may be inserted between adjacent panel supports 10 in a vertical direction.

2 and 3, a soundproof panel according to an embodiment of the present invention includes a front plate 110, a rear plate 120, a first soundproof plate 130, a second soundproof plate 140, And includes a spacing member 150 and a second spacing member 160. The first soundproof plate 130 and the second soundproof plate 140 are disposed between the front plate 110 and the rear plate 120. The second soundproof plate 140 is adjacent to the front plate 110. The first space maintaining member 150 is disposed between the rear plate 120 and the first soundproof plate 130 to form a first air layer 170. The second space maintaining member 160 is disposed between the first soundproof plate 130 and the second soundproof plate 140 to form a second air layer 180.

Referring to FIG. 2, the front plate 110 includes a plurality of perforations 116, 118. In the soundproof panel 100, the front plate 110 is disposed to face a noise source. For example, when the soundproof panel is applied to a road sound barrier, the front plate 110 is disposed to face the road.

In the present embodiment, the front plate 110 includes a circular perforation 116 and a slit perforation 118. The circular perforations 116 and the slit perforations 118 are continuously arranged in the horizontal direction and alternately arranged in the vertical direction. In another embodiment, the face plate 110 may comprise only a circular perforation or a slit perforation.

The front plate 110 may be formed by processing a metal plate, for example, a galvanized steel plate, an aluminum steel plate, a stainless steel plate, or the like. In another embodiment, the front plate 110 may be a mold formed using a polymer resin such as PVC.

In the present embodiment, the front plate 110 includes a front portion 112 and a horizontal portion 114 extending in the horizontal direction from the front portion 112, . The horizontal extension 114 of the front plate 110 may extend horizontally toward the rear plate 120 to cover upper and lower surfaces of the second soundproof plate 140. In this embodiment, the horizontal extension 114 of the front plate 110 covers not only the second soundproof plate 140 but also the upper and lower surfaces of the first soundproof plate 130, It may partially cover the front surface of the soundproof plate 130. [

The front plate 110 is coupled with the rear plate 120 to form a storage frame having a storage space. The rear plate 120 includes a rear portion 122 extending in the vertical direction and a horizontal extension portion 124 extending in the horizontal direction from the rear portion 122. Specifically, the horizontal extension 124 of the rear plate 120 may extend horizontally toward the front plate 110 to cover the top and bottom surfaces of the first sound-proof plate 130.

The horizontal extension 114 of the front plate 110 and the horizontal extension 124 of the rear plate 120 may overlap each other. For example, the horizontal extension 114 of the front plate 114 may have a shape that surrounds the outer surface of the horizontal extension 124 of the rear plate 120.

 The horizontal extending portion 114 of the front plate 110 and the horizontal extending portion 124 of the rear plate 120 may have a concavo-convex shape. The concave and convex shape can guide the position of the soundproof panel when the soundproof panel is stacked in the vertical direction.

The front plate 110 and the rear plate 120 may be formed as a single unit, or a plurality of units may be combined with each other.

The first soundproof plate 130 and the second soundproof plate 140 may include different materials or may include the same materials.

For example, the first soundproof plate 130 and the second soundproof plate 140 may be polyester plates having different densities. Specifically, the density of the second soundproof plate 140 adjacent to the front plate 110 is higher than that of the first soundproof plate 130. When the high-density polyester plate is disposed on the front surface, the rear air layer is formed to increase the sound-absorbing performance of the low-frequency component. At this time, the sound-absorbing performance of the high- So that the sound absorption performance can be maximized.

The density of the high density polyester constituting the second soundproof plate 140 is preferably 100 kg / m 3 or more, and the density of the low density polyester constituting the first soundproof plate 130 is preferably 32 kg / m 3 to 64 kg / . If the density of the high-density polyester is less than 100 kg / m 3 and the density of the low-density polyester is more than 64 kg / m 3, the density difference between the two sound-absorbing layers is not large and the similar acoustic behavior is obtained. When the density of the low-density polyester is less than 32 kg / m 3, the sound absorption effect in the rear air layer formed by the high-density polyester is lowered, and the sound absorption performance may be deteriorated as a whole.

In another embodiment, the first sound-proof plate 130 may be a sound-absorbing plate including polyurethane or rubber, and the second sound-absorbing plate 140 may be a sound-absorbing plate including polyester.

The sound insulating plate can prevent external noises from being transmitted to the rear surface of the soundproof panel, and can absorb vibrations caused by noise or vibrations caused by passing vehicles.

4 is an enlarged sectional view of the region A in Fig. 5 is a front view showing the first soundproof plate combined with the first gap retaining member;

4, the first gap maintaining member 150 includes a support 152 disposed between the first soundproof plate 130 and the rear plate 120, and a second soundproofing protrusion 152 protruding from the support 152, And an insertion portion 154 that is inserted into the plate 130. Accordingly, the position of the first spacing member 150 can be fixed between the first soundproof plate 130 and the rear plate 120.

The vertical width of the support portion 152 is larger than the vertical width (or diameter) of the insertion portion 154. The horizontal width of the support portion 152 may be designed to be the same as the thickness of the desired first air layer 170.

5, a plurality of first spacing members 150 may be disposed, for example, along the rows and columns to form a matrix shape, and one surface of the first sound- Lt; / RTI >

The first price holding member 150 can be easily installed. For example, in the process of assembling the soundproof panel, the inserting portion 154 may be inserted into the first soundproof plate 130 by pressing the support portion 152. Since the first soundproof plate 130 is made of a material having a low hardness such as a polymer resin, when the width of the distal end of the insertion portion 154 is made small, that is, (Punched) into the first sound-proof plate 130 as easily as a pushpin.

The support portion 152 may be formed of a polymer resin, metal, wood, or the like, and may be formed of a polymer resin in consideration of corrosion resistance, ease of manufacture, generation of secondary noise by transmission of vibration, and the like.

The second gap maintaining member 160 includes a support portion 162 disposed between the first soundproof plate 130 and the second soundproof plate 140 and a second soundproof plate 160 protruded from the support portion 162, And an inserting portion 164 inserted into the inserting portion. The second gap holding member 160 has substantially the same shape and configuration as the first gap holding member 150, and thus a detailed description thereof will be omitted.

6 is a perspective view showing embodiments of the first gap maintaining member. 6, the first spacing member may include a support 152 in the form of a rectangular parallelepiped or may include a support 252 in the form of a cylinder.

The first gap maintaining member includes a support portion 352 in the shape of a circular plate, an insertion portion 354 protruded from the support portion 352 and inserted into the first soundproof plate, And a support protrusion 356 protruding from the support portion 352. [ The support protrusion 356 has a smaller width (diameter) than the support portion 352, and contacts the rear plate. Since the rear plate is made of a hard material such as metal, even if pressure is applied to the support protrusion 356, the rear plate is not inserted into the rear plate, so that the gap between the first sound- have. When the support protrusion having a width smaller than that of the support portion is used as described above, the volume of the air layer may be reduced, Can be prevented.

The first gap retaining member may include a first support portion 452 having a wheel shape, a second support portion 454 spaced from the first support portion and having a wheel shape, and a second support portion 454 having a first support portion 452, And an insertion portion 456 that connects the second support portion 452 and protrudes from the second support portion 454. The gap holding member having such a structure can prevent a volume reduction of the air layer. Further, it can be used not only between the soundproof plate and the back plate, but also between the first soundproof plate and the second soundproof plate.

According to the present invention, it is possible to increase the soundproof efficiency by stably forming the air layer in the soundproof panel using the gap holding member. Further, the gap holding member can be easily inserted into the soundproof plate, so that it can be easily installed.

In this embodiment, the soundproof panel includes a first gap retaining member and a second gap retaining member to include a first air layer and a second air layer, but in other embodiments, the sound insulation panel may include only one air layer have.

7 and 8 are sectional views showing a soundproof panel according to another embodiment of the present invention.

7, the soundproof panel according to one embodiment of the present invention includes a front plate 210, a rear plate 220, a first soundproof plate 230, a second soundproof plate 240, (250). The first soundproof plate 230 and the second soundproof plate 240 are disposed between the front plate 210 and the rear plate 220. The second soundproof plate 240 is adjacent to the front plate 210. The first space maintaining member 250 is disposed between the rear plate 220 and the first soundproof plate 230 to form a first air layer 270. The soundproof panel is substantially the same as the soundproof panel shown in FIG. 3 except that it does not include the second gap retaining member and the thickness of the first soundproof plate 230 is different, so a duplicated description will be omitted do.

According to the present embodiment, the first soundproof plate 230 and the second soundproof plate 240 are substantially in contact with each other, and no air layer is formed therebetween. In such a configuration, the thickness of the first soundproof plate 230 can be increased. In this embodiment, the first soundproof plate 230 includes low-density polyester, the second soundproof plate 240 includes high-density polyester, and the first soundproof plate 230 includes the second soundproof plate 240, Is thicker than the plate (240).

For example, it is preferable that the thickness of the second soundproof plate 240 is 10 mm or more, and the thickness of the first soundproof plate 230 is 40 mm or more. That is, in order to sufficiently obtain a sound absorption effect by using soundproof plates having different densities from each other, the thickness of the second soundproof plate 240 including high-density polyester is set to 10 mm to 30 mm, the first soundproof plate 230 including low- ) Is preferably 40 mm to 60 mm.

If the thickness of the second soundproof plate 240 is less than 10 mm, the strength of the sound absorbing material is too weak and the sound absorbing layer of the low frequency component is difficult to form, 10 mm or more. In particular, when the thickness of the soundproof plate is about 75 mm, when the thickness of the second soundproof plate 240 is more than 30 mm, the thickness of the first soundproof plate 230 is relatively thin, So that the sound absorption property is deteriorated as a whole. Therefore, it is preferable that the thickness of the second soundproof plate 240 is at least 10 mm, and the thickness of the soundproof plate is preferably from 10 mm to 30 mm when the thickness of the soundproof plate is 75 mm.

In addition, when the thickness of the first soundproof plate 230 is less than 40 mm, the first soundproof plate 230 may be too thin, so that it is difficult to absorb high frequency components. Particularly, when the thickness of the soundproof plate is made 75 mm, when the thickness of the first soundproof plate 230 exceeds 60 mm, the thickness of the second soundproof plate 240 becomes relatively thin, So that the sound absorption property is deteriorated as a whole. Therefore, it is preferable that the thickness of the first soundproof plate 230 is at least 40 mm, and when the thickness of the soundproof plate is 75 mm, it is preferably 40 mm to 60 mm.

Referring to FIG. 8, the soundproof panel according to an embodiment of the present invention includes a front plate 310, a rear plate 320, a first soundproof plate 330, a second soundproof plate 340, (350). The first soundproof plate 330 and the second soundproof plate 340 are disposed between the front plate 310 and the rear plate 320. The second soundproof plate 340 is adjacent to the front plate 310. The first space maintaining member 350 is disposed between the second soundproof plate 140 and the first soundproof plate 130 to form a first air layer 370. The soundproof panel is the same as the soundproof panel shown in Fig. 7 (A) except that the first gap holding member 350 and the first air layer 370 are disposed between the second soundproof plate 140 and the first soundproof plate 130. [ Is substantially the same as that of the soundproof panel shown in FIG.

Soundproof panels according to the present invention can be used for soundproof walls, soundproofing partitions, noise barrier rooms, and the like.

10: panel support
100: soundproof panel
110, 210, 310: front plate
120, 220, 320: rear plate
130, 230, 330: a first soundproof plate
140, 240, 340: a second soundproof plate
150, 250, 350: a first gap holding member
160: second interval holding member
170, 270, 370: first air layer
180: second air layer

Claims (7)

A front plate having a plurality of through holes;
A rear plate coupled with the front plate to form a storage space;
A first sound absorbing plate disposed between the front plate and the rear plate, the first sound absorbing plate being made of polyester;
A second sound-absorbing plate disposed between the first sound-absorbing plate and the front plate, the second sound-absorbing plate being made of polyester; And
And a first spacing member disposed between the second sound-absorbing plate and the first sound-absorbing plate or between the rear plate and the first sound-absorbing plate to form a first air layer, wherein the first gap- And an insertion portion protruding from the support portion and inserted into the first sound-absorbing plate or the second sound-absorbing plate. The soundproof panel according to claim 1, wherein the polyester density of the second sound-absorbing plate is higher than the polyester density of the first sound-absorbing plate. The soundproof panel according to claim 1, wherein the first sound-absorbing plate is thicker than the second sound-absorbing plate. 2. The sound absorbing device according to claim 1, wherein the first gap retaining member is disposed between the first sound absorbing plate and the rear plate, the insertion portion of the first gap retaining member is inserted into the first sound absorbing plate,
Further comprising a second gap retaining member disposed between the first sound absorbing plate and the second sound absorbing plate to form a second air layer. delete delete The soundproof panel according to claim 1, wherein the first gap holding member further comprises a support protrusion having a width smaller than that of the support portion and protruding from the support portion in a direction opposite to the insertion portion.
KR2020140006397U 2014-08-28 2014-08-28 High-noise-absorbable noise barrier panel including air gap KR200477936Y1 (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200050666A (en) * 2018-11-02 2020-05-12 김두진 Soundproof sheet for shielding architectural openings
KR20200050915A (en) * 2018-11-02 2020-05-12 김두진 Soundproof sheet for shielding architectural openings
KR20200050685A (en) * 2018-11-02 2020-05-12 (주) 솔연 Soundproof sheet with function of natural lighting for shielding architectural openings
KR102162183B1 (en) * 2020-02-17 2020-10-06 포인텍이앤씨(주) Anti-corrosion soundproof board
KR102222881B1 (en) * 2020-06-12 2021-03-04 양완수 Sound absorption panel structure with improved sound insulation performance
KR102287929B1 (en) * 2021-02-18 2021-08-09 한강테크놀러지(주) Soundproof panel for soundproof wall
KR102371299B1 (en) * 2021-08-26 2022-03-07 주식회사 소리지오 Soundproof booth
KR102371306B1 (en) * 2021-08-26 2022-03-07 주식회사 소리지오 Soundproof booth
KR20220159198A (en) * 2021-05-25 2022-12-02 김학섭 Construction panel
KR102532744B1 (en) * 2022-08-26 2023-05-16 주식회사 리브로스 Booth with easy air circulation and sound absorption

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101169022B1 (en) 2011-08-23 2012-07-27 (주)대우건설 Temporary sound barrier for improving acoustic performances

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101169022B1 (en) 2011-08-23 2012-07-27 (주)대우건설 Temporary sound barrier for improving acoustic performances

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102374836B1 (en) * 2018-11-02 2022-03-15 김두진 Soundproof sheet for shielding architectural openings
KR20200050915A (en) * 2018-11-02 2020-05-12 김두진 Soundproof sheet for shielding architectural openings
KR20200050685A (en) * 2018-11-02 2020-05-12 (주) 솔연 Soundproof sheet with function of natural lighting for shielding architectural openings
KR102124117B1 (en) * 2018-11-02 2020-06-18 (주) 솔연 Soundproof sheet with function of natural lighting for shielding architectural openings
KR102152505B1 (en) * 2018-11-02 2020-09-04 김두진 Soundproof sheet for shielding architectural openings
KR20200050666A (en) * 2018-11-02 2020-05-12 김두진 Soundproof sheet for shielding architectural openings
KR102162183B1 (en) * 2020-02-17 2020-10-06 포인텍이앤씨(주) Anti-corrosion soundproof board
KR102222881B1 (en) * 2020-06-12 2021-03-04 양완수 Sound absorption panel structure with improved sound insulation performance
KR102287929B1 (en) * 2021-02-18 2021-08-09 한강테크놀러지(주) Soundproof panel for soundproof wall
KR20220159198A (en) * 2021-05-25 2022-12-02 김학섭 Construction panel
KR102569942B1 (en) * 2021-05-25 2023-08-23 김학섭 Construction panel
KR102371299B1 (en) * 2021-08-26 2022-03-07 주식회사 소리지오 Soundproof booth
KR102371306B1 (en) * 2021-08-26 2022-03-07 주식회사 소리지오 Soundproof booth
KR102532744B1 (en) * 2022-08-26 2023-05-16 주식회사 리브로스 Booth with easy air circulation and sound absorption

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