KR200328974Y1 - sound absorption panel - Google Patents
sound absorption panel Download PDFInfo
- Publication number
- KR200328974Y1 KR200328974Y1 KR20-2003-0020097U KR20030020097U KR200328974Y1 KR 200328974 Y1 KR200328974 Y1 KR 200328974Y1 KR 20030020097 U KR20030020097 U KR 20030020097U KR 200328974 Y1 KR200328974 Y1 KR 200328974Y1
- Authority
- KR
- South Korea
- Prior art keywords
- sound absorbing
- sound
- absorbing material
- plate
- fixed
- Prior art date
Links
- 238000010521 absorption reaction Methods 0.000 title abstract description 9
- 239000011358 absorbing material Substances 0.000 claims abstract description 41
- 239000000463 material Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 239000006260 foam Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- E04B1/8209—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 sound absorbing devices
-
- 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
- E04B2001/8423—Tray or frame type panels or blocks, with or without acoustical filling
- E04B2001/8433—Tray or frame type panels or blocks, with or without acoustical filling with holes in their face
- E04B2001/8438—Slot shaped holes
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
Abstract
본 고안은 흡음효과가 배가된 흡음패널에 관한 것으로서, 더 상세하게는 상하판(44) 및 측판(46), 후면판(42)이 결합되어 박스형으로 형성된 케이스(40)와,The present invention relates to a sound absorbing panel doubled in sound absorption effect, more specifically, the upper and lower plates 44 and the side plate 46, the back plate 42 is coupled to the case 40 formed in the box shape,
상기 케이스(40) 내부 후면판(42)상에 부착되는 후면흡음재(10b)와, 상기 후면흠음재(10b) 전면에 소정간격을 두고 고정되는 것에 의해 공간부(30)를 형성하는 전면흡음재(10a)와,The front sound absorbing material 10b attached to the inner back plate 42 of the case 40 and the front sound absorbing material forming the space part 30 by being fixed to the front surface of the rear flaw sound material 10b at a predetermined interval ( 10a),
상기 전면흡음재(10a) 전면에 형성되는 것으로 전면흡음재(10a)와 소정간격을 이뤄 공간부(32)를 형성한채 상하판(44)에 고정되되, 대략 긴판상으로서 각각 일정 거리를 두고 고정되어 틈(22)이 형성된 복수개의 반사판(20)으로 구성됨을 특징으로 하여, 반사판을 통해 음파(고음)를 확산시킴과 동시에 틈을 통해 유입된 음파를 흡수하고 소진시킬 수 있으며, 헬름홀츠구조로 된 두 흡음재 사이의 공간부에서 저음을 흡수하여 저역공진을 제어하게 됨으로써 저역과 고역의 음파를 한꺼번에 흡수하고 소진시킬 수 있게 된다. 따라서 그 흡음효과가 현저하게 배가된 흠음패널을 얻을 수 있게 된다.It is formed on the front of the front sound absorbing material (10a) is fixed to the upper and lower plates 44 to form a space portion 32 to form a predetermined interval with the front sound absorbing material (10a), each of which is fixed to a certain distance as a long plate shape. Characterized by consisting of a plurality of reflecting plate (20) formed 22, it is possible to diffuse and absorb the sound waves (high sound) through the reflecting plate and absorb and exhaust the sound waves introduced through the gap, two sound absorbing material of Helmholtz structure By controlling the low frequencies by absorbing the bass in the space between the low and high frequency sound waves can be absorbed and exhausted at once. Therefore, a flaw panel with which the sound absorption effect is remarkably doubled can be obtained.
Description
본 고안은 건축용 흡음패널에 관한 것으로, 보다 상세하게는 그 내부에 음(音)을 흡수할 수 있는 흡음부재가 구비된 콘벡스(convex)구조의 흡음패널에 관한 것이다.The present invention relates to a sound absorbing panel for construction, and more particularly, to a sound absorbing panel of a convex structure having a sound absorbing member capable of absorbing sound therein.
일반적으로, 소음이 특히 많이 발생되는 강당, 체육관, 각종 공장, 주차장 등의 벽면등에는 판상의 흡음재가 시공되어, 실내에서 발생되는 소음이 상기 흡음재에 반사되거나 흡수되어 소음을 줄일 수 있도록 하고 있다.In general, a plate-shaped sound absorbing material is installed in walls, such as auditoriums, gymnasiums, various factories, parking lots, etc., where a lot of noise is generated, so that noise generated in the room is reflected or absorbed by the sound absorbing material to reduce noise.
이러한 종래의 흡음재들은 판상의 부재 표면에 흡음목적의 표면처리시공을 별도로 행하여 벽 전체에 부착하여서 된 것이 있었으며, 아니면 긴 천을 일정간격으로 다수개 매달아두거나 하여 음반사의 반사율을 저감시켜 실내의 공명현상을 방지하는 것이 주로 사용되어 왔다.These conventional sound absorbing materials were formed by attaching the entire surface of the plate-like member for sound absorbing purposes separately or by attaching them to the entire wall. Preventing has been mainly used.
또한, 종래에 제공되어 왔던 패널 형태의 방음, 흡음시설은 유리섬유(fiber glass fabric), 폴리에치렌폼과 같은 발포폼의 양면에 합판, 플라스틱판과 같은 경질 판을 접합시켜 고정하는 방식이 사용되고 있다. 이러한 흡음시설은 내부에 충입된 흡음재에 음파가 직접 닿게 하여 음반사율을 감쇄시키는 방법을 사용하는 것이 일반적이다.In addition, the conventional soundproofing and sound absorption facilities in the form of panels are used to bond and fix a rigid plate such as plywood and plastic plates on both sides of a foam foam such as fiberglass fabric and polyethylene foam. have. Such a sound absorbing facility generally uses a method of attenuating sound reflectivity by directly contacting sound waves to the sound absorbing material filled therein.
그러나 이와 같은 종래의 흡음재 만으로는 흡음기능을 충실히 수행할 수 없는 것이었고, 따라서 이를 개선하여 보다 효과적으로 음을 흡수하여 공명현상을 줄일 수 있도록 된 흡음패널의 필요성이 대두되어 왔다.However, such a conventional sound absorbing material alone was not able to perform the sound absorbing function faithfully, and thus, there has been a need for a sound absorbing panel that can improve sound absorption by reducing the resonance phenomenon.
본 고안은 상기와 같은 문제점을 해결하기 위해 안출된 것으로서, 저역 및 고역의 음파를 동시에 흡음할 수 있도록 하여 종래 흡음재에 비해 현저하게 그 흡음성능이 향상된 흡음패널을 얻는데 그 목적이 있는 것이다.The present invention has been made in order to solve the above problems, it is the purpose to obtain a sound absorbing panel significantly improved sound absorption performance compared to the conventional sound absorbing material to be able to absorb the low and high sound waves at the same time.
상기와 같은 목적을 달성하기 위해 본 발명에서는 상하판(44) 및 측판(46), 후면판(42)이 결합되어 박스형으로 형성된 케이스(40)와,In order to achieve the above object in the present invention, the upper and lower plates 44 and the side plate 46, the back plate 42 is coupled to the case 40 formed in a box shape,
상기 케이스(40) 내부 후면판(42)상에 부착되는 후면흡음재(10b)와, 상기 후면흠음재(10b) 전면에 소정간격을 두고 고정되는 것에 의해 공간부(30)를 형성하는 전면흡음재(10a)와,The front sound absorbing material 10b attached to the inner back plate 42 of the case 40 and the front sound absorbing material forming the space part 30 by being fixed to the front surface of the rear flaw sound material 10b at a predetermined interval ( 10a),
상기 전면흡음재(10a) 전면에 형성되는 것으로 전면흡음재(10a)와 소정간격을 이뤄 공간부(32)를 형성한채 상하판(44)에 고정되되, 대략 긴판상으로서 각각 일정 거리를 두고 고정되어 틈(22)이 형성된 복수개의 반사판(20)으로 구성되는 흡음패널을 제안한다.It is formed on the front of the front sound absorbing material (10a) is fixed to the upper and lower plates 44 to form a space portion 32 to form a predetermined interval with the front sound absorbing material (10a), each of which is fixed to a certain distance as a long plate shape. A sound absorbing panel composed of a plurality of reflecting plates 20 having 22 formed thereon is proposed.
도 1 은 본 고안에 의한 흡음패널의 사시도,1 is a perspective view of a sound absorbing panel according to the present invention,
도 2 는 도 1 의 횡방향 단면도,2 is a cross sectional view of FIG. 1;
도 3 은 콘벡스(convex)구조에 의해 음파가 반사되는 것을 도시한 예시도,3 is an exemplary view illustrating that sound waves are reflected by a convex structure;
도 4 는 흡음패널을 벽면에 시공한 상태 예시도.4 is an exemplary view illustrating a state in which a sound absorbing panel is constructed on a wall surface.
<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>
100 : 흡음패널100: sound absorption panel
10a, 10b : 흡음재 20 : 반사판10a, 10b: Sound absorbing material 20: Reflector
22 : 틈 30, 32 : 공간부22: gap 30, 32: space part
40 : 케이스 42 : 후면판40: case 42: backplane
44 : 상하판 46 : 측판44: upper and lower plate 46: side plate
이하 본 고안을 첨부된 도면 도 1 내지 도 4를 참고로 하여 설명하면 다음과 같다.Hereinafter, the present invention will be described with reference to the accompanying drawings, FIGS. 1 to 4.
도 1 은 본 고안에 의한 흡음패널의 사시도, 도 2 는 도 1 의 횡방향 단면도, 도 3 은 콘벡스(convex)구조에 의해 음파가 반사되는 것을 도시한 예시도, 도 4 는 흡음패널을 벽면에 시공한 상태 예시도이다.1 is a perspective view of the sound absorbing panel according to the present invention, FIG. 2 is a cross-sectional view of FIG. 1, FIG. 3 is an exemplary view showing that sound waves are reflected by a convex structure, and FIG. 4 is a wall surface of the sound absorbing panel. It is an example figure of the state built in.
먼저 고안의 기본 구성을 살펴보면, 본 고안에 의한 흡음패널(100)은 상하판(44) 및 측판(46), 후면판(42)이 결합되어 박스형으로 형성된 케이스(40)와,Looking at the basic configuration of the present invention, the sound absorbing panel 100 according to the present invention is the upper and lower plate 44 and the side plate 46, the rear plate 42 is coupled to the case 40 formed in a box shape,
상기 케이스(40) 내부 후면판(42)상에 부착되는 후면흡음재(10b)와, 상기 흠음재(10b) 전면에 소정간격을 두고 고정되는 것에 의해 공간부(30)를 형성하는 전면흡음재(10a)와, 상기 흡음재(10a) 전면에 형성되는 것으로 전면흡음재(10a)와 소정간격을 이뤄 공간부(32)를 형성한채 상하판(44)에 고정되되, 긴판상으로서 각각 일정 거리를 두고 고정되어 틈(22)이 형성된 복수개의 반사판(20)으로 구성됨을 특징으로 하는 것이다.The rear sound absorbing material 10b attached to the inner back plate 42 of the case 40 and the front sound absorbing material 10a forming the space part 30 by being fixed at a predetermined interval on the front surface of the flaw material 10b. ) And the sound absorbing material 10a, which are formed on the front surface of the sound absorbing material 10a, and are fixed to the upper and lower plates 44 at a predetermined interval with the front sound absorbing material 10a to form a space portion 32, respectively, as a long plate shape. Characterized in that it consists of a plurality of reflecting plate 20, the gap 22 is formed.
상술한 기본 구성외에, 상기 전면흡음재(10a)는 호형으로 형성되며, 상기 반사판(20)들은 상기 전면흡음재(10a)와 일정간격을 유지한 채 호형으로 배열됨을 특징으로 하는 것이다.In addition to the above-described basic configuration, the front sound absorbing material (10a) is formed in an arc shape, the reflecting plate 20 is characterized in that arranged in an arc shape while maintaining a predetermined interval with the front sound absorbing material (10a).
이하 본 고안을 고안의 바람직한 실시예를 바탕으로 상세하게 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail based on the preferred embodiments of the present invention.
상기 케이스(40)는 목재 혹은 플라스틱재질등으로서 측면판(46), 후면판(42), 상하판(44)을 별도로 성형한후 이를 조립하여서 내부가 빈 박스형태로 조립하게 된다.The case 40 is made of wood or plastic material, such as side plate 46, rear plate 42, upper and lower plate 44 separately molded and assembled to assemble in the form of an empty box.
이와 같이 조립된 케이스(40) 내부 후면판(42) 전면에는 통상 사용되는 유리섬유재질 혹은 석면재질등의 후면흡음재(10b)를 부착하여 주게 되며, 이의 전면으로는 일정간격을 두고 상기 후면흡음재(10b)와 동일하거나 혹은 다른 재질의 전면흡음재(10b)를 고정하여 전면흡음재(10a)와 후면흡음재(10b) 사이에 공간부(30)가 형성되도록 구성한다. 여기서, 상기 공간부(30)는 통해 외부로 부터 흡수된 음파가 흡수되어 소진되도록 하는 작용을 하게된다.The rear absorber 10b, such as glass fiber material or asbestos material, which is commonly used, is attached to the front of the inner rear plate 42 assembled in the case 40, and the rear sound absorbing material has a predetermined distance to the front of the case 40. The front sound absorbing material 10b of the same or different material as 10b) is fixed so that the space portion 30 is formed between the front sound absorbing material 10a and the rear sound absorbing material 10b. Here, the space portion 30 is to act to absorb the sound waves absorbed from the outside through the exhaust.
상기와 같은 구조는 저명한 물리학자인 헬름홀츠(Helmholtz)가 제안한 구조를 응용한 구조로서 헬름홀츠구조라 알려져 있으며 낮은 주파수대의 음파(저음)를흡수하여 저역공진(Low frequency resonance)을 제어하는 기능이 있는 것으로 알려져 있다.The structure described above is a structure applied by the famous physicist Helmholtz, which is known as the Helmholtz structure, and is known to have a function of controlling low frequency resonance by absorbing low frequency sound waves (bass). .
상기 전면흡음재(10a)의 전면에는 대략 긴 판상의 반사판(20)이 구비되어 전면흡음재(10a)와 일정간격을 두고 공간부(32)를 형성한채 상기 케이스(40)의 상하판(44)의해 고정되어 나란히 배열 되며, 이때 상기 반사판(20)은 각 판끼리 일정한 간격을 두고 고정되어 틈(22)을 형성하면서 배열된게 된다. 여기서, 상기 틈(22)은 음파가 유입될 수 있는 간격을 제공하는것이다.The front of the front sound absorbing material (10a) is provided with a substantially long plate-shaped reflecting plate 20 is formed by the upper and lower plates 44 of the case 40 while forming a space portion 32 at a predetermined interval with the front sound absorbing material (10a) It is fixed and arranged side by side, wherein the reflecting plate 20 is arranged while forming a gap 22 is fixed to each plate at a predetermined interval. Here, the gap 22 is to provide a gap in which sound waves can be introduced.
상기와 같은 전면흡음재(10a)와 반사판(20)은 유입되는 음파를 효과적으로 반사하여 확산키기 위해 굴곡된 호형으로 형성됨이 바람직하다 할 것이고 이는 도 4 에 예시된 바와 같이 전면의 전체적인 형태가 호형을 이루도록 한 것으로 통상 콘벡스(convex)구조라 하며, 호의 만곡정도를 조절하여 확산시키고자 하는 음파의 주파수 대역을 조절할 수 있는 것이다.It is preferable that the front sound absorbing material 10a and the reflecting plate 20 as described above are formed in a curved arc shape to effectively reflect and diffuse the incoming sound wave, so that the overall shape of the front surface is formed as shown in FIG. 4. One is usually called a convex structure, and it is possible to adjust the frequency band of sound waves to be spread by controlling the degree of curvature of the arc.
상기 설명된 구조에 의하면, 전면흡음재(10a)와 반사판(20) 사이에는 형성된 공간부(32)가 형성되어 있어 외부로 부터 유입되는 음파중 일부는 상기 반사판(20)에 의해 분산되는 동시에, 상기 틈(20)을 통해 유입된 일부 음파는 전면흡음재(10a)에 의해 일부 흡수되고 나머지는 다시 반사되어 반사판(20)의 배면에 부딪침을 반복하면서 소진되게 되는 것이며, 두 흡음재(10a)(10b)의 간격에 의해 형성된 상기 공간부(30)와 연계되어 고음 및 저음의 음파를 동시에 확산시킬 수 있는 이중의 흡음효과를 발휘하게 되는 것이다.According to the above-described structure, a space portion 32 formed between the front sound absorbing material 10a and the reflecting plate 20 is formed so that some of the sound waves introduced from the outside are dispersed by the reflecting plate 20, and Some sound waves introduced through the gap 20 are partially absorbed by the front sound absorbing material 10a and the other are reflected again to be exhausted while repeatedly hitting the rear surface of the reflecting plate 20, and the two sound absorbing materials 10a and 10b. It is associated with the space portion 30 formed by the interval of to exhibit a double sound absorption effect that can simultaneously diffuse the high and low sound waves.
이러한 본 고안에 의한 흡음패널(100)은 도 3 에서 예시된 바와 같이 벽면에차례로 부착하여 시공하여 주면 되는 것이며, 그 패널의 길이는 필요에 따라 다양한 길이로 형성할 수 있는 것이고, 제어하고자 하는 음파의 주파수에 따라 그 패널의 두께를 조절할 수 있음은 선택적인 사안으로서 다양한 변형실시가 가능한 것이다.The sound absorbing panel 100 according to the present invention is to be attached to the wall in order to be installed as shown in Figure 3, the length of the panel can be formed in various lengths as necessary, the sound wave to be controlled The ability to adjust the thickness of the panel according to the frequency of is an optional matter that can be modified in various ways.
상기와 같이 케이스 내부에 두 흡음재에 의해 공간부가 형성되며 전면에 반사판이 일정간격으로 틈이 형성되어있어, 반사판을 통해 음파(주로 고음)를 확산시킴과 동시에 틈을 통해 유입된 음파를 흡수하고 소진시킬 수 있으며, 헬름홀츠구조로 된 두 흡음재 사이의 공간부에서 저음을 흡수하여 저역공진을 제어하게 됨으로써 저역과 고역의 음파를 한꺼번에 흡수하고 소진시킬 수 있게 된다. 따라서 그 흡음효과가 현저하게 배가된 흡음패널을 얻을 수 있게 된다.As described above, the space is formed by two sound absorbing materials inside the case, and a gap is formed at a predetermined interval on the front of the reflection plate, so that the sound wave (mainly high sound) is diffused through the reflection plate and absorbs and exhausts the sound wave introduced through the gap. By absorbing the bass in the space between the two sound absorbing material of the Helmholtz structure to control the low frequency resonance it is possible to absorb and exhaust the low and high sound waves at once. Therefore, the sound absorbing panel with which the sound absorption effect is remarkably doubled can be obtained.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20-2003-0020097U KR200328974Y1 (en) | 2003-06-25 | 2003-06-25 | sound absorption panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20-2003-0020097U KR200328974Y1 (en) | 2003-06-25 | 2003-06-25 | sound absorption panel |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020030041541A Division KR20050000936A (en) | 2003-06-25 | 2003-06-25 | sound absorption panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR200328974Y1 true KR200328974Y1 (en) | 2003-10-04 |
Family
ID=49416565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR20-2003-0020097U KR200328974Y1 (en) | 2003-06-25 | 2003-06-25 | sound absorption panel |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR200328974Y1 (en) |
-
2003
- 2003-06-25 KR KR20-2003-0020097U patent/KR200328974Y1/en not_active IP Right Cessation
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9390702B2 (en) | Acoustic metamaterial architectured composite layers, methods of manufacturing the same, and methods for noise control using the same | |
| KR100645824B1 (en) | The sound-absorbing panel | |
| EP2226791B1 (en) | Accoustic structure | |
| JPH0718759A (en) | Sound absorbing device | |
| JPH02272131A (en) | Sound-absorbing panel | |
| WO2004075164A1 (en) | Sound-absorbing structure body | |
| RU28502U1 (en) | Double-walled panel of modular type | |
| KR200328974Y1 (en) | sound absorption panel | |
| KR20050000936A (en) | sound absorption panel | |
| KR101167090B1 (en) | A sound reduction apparatus | |
| JPH08177142A (en) | Interior finishing sound absorbing body and interior finishing sound board using it | |
| KR200384324Y1 (en) | Sound absorption type soundproof wall | |
| RU2648726C1 (en) | Noise absorbing panel | |
| JPH0740002Y2 (en) | Resonator type soundproof panel | |
| CN105575379A (en) | Muffler chamber and muffler used therefor | |
| JPH05197383A (en) | Acoustic absorption body | |
| KR100673623B1 (en) | Soundproof unit, soundproof wall and soundproof tunnel | |
| KR100383465B1 (en) | Speaker device improved the reproduction of low frequency band | |
| KR960004924Y1 (en) | Plate for absorbing noise | |
| RU2334062C2 (en) | Cubic custom-made acoustic absorber | |
| JPH05333866A (en) | Sound absorber | |
| JP2008031775A (en) | Sound absorbing structure of building | |
| JP2000309989A (en) | Sound-absorbing panel | |
| JP2007277847A (en) | Sound absorbing structure of building | |
| RU2611652C1 (en) | Kochetov's acoustic panel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| U107 | Dual application of utility model | ||
| REGI | Registration of establishment | ||
| FPAY | Annual fee payment |
Payment date: 20120924 Year of fee payment: 10 |
|
| EXPY | Expiration of term |