JPH0913331A - Soundproof device and soundproof wall provided with the device - Google Patents
Soundproof device and soundproof wall provided with the deviceInfo
- Publication number
- JPH0913331A JPH0913331A JP16064595A JP16064595A JPH0913331A JP H0913331 A JPH0913331 A JP H0913331A JP 16064595 A JP16064595 A JP 16064595A JP 16064595 A JP16064595 A JP 16064595A JP H0913331 A JPH0913331 A JP H0913331A
- Authority
- JP
- Japan
- Prior art keywords
- sound
- wall portion
- front surface
- soundproof
- wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、車両等の走行に伴う騒
音を遮音、吸音するために、高速道路や鉄道の沿線等に
沿って設置される防音壁の上縁部に沿って取付けられる
防音装置およびその防音装置が取付けられた防音壁に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is installed along the upper edge of a soundproof wall installed along a highway or along a railway in order to intercept and absorb noise caused by running of a vehicle. The present invention relates to a soundproof device and a soundproof wall to which the soundproof device is attached.
【０００２】[0002]
【従来の技術】車両等の走行に伴う騒音を遮音、吸音す
るために、例えば前面に多数の吸音孔が穿設された箱形
のケース内にグラスウール等の吸音材が内蔵された防音
壁が、高速道路や鉄道の沿線等に沿って設置されてい
る。この防音壁は、防音壁に近接した所からの騒音に対
しては効果的に遮音、吸音がなされているが、防音壁か
ら離れた所からの騒音に対しては上縁部からその裏側に
廻り込む回折音の問題があった。2. Description of the Related Art A soundproof wall having a sound absorbing material such as glass wool contained in a box-shaped case having a large number of sound absorbing holes formed on the front surface thereof, for example, in order to shield and absorb noise caused by traveling of a vehicle. , Installed along highways and railway lines. This noise barrier effectively shields and absorbs noise from the place near the noise barrier, but from the upper edge to the back side of the noise from the place far from the noise barrier. There was a problem of the diffracted sound that circulates.
【０００３】[0003]
【発明が解決しようとする課題】この回折音に対しては
防音壁の高さを高くするのが効果的であるが、風圧の関
係から高くするにも限度があり、そのために防音壁の上
部を道路側に庇形やアーチ形に湾曲させる等して、見か
け上の高さを高くして回折音による影響を少なくするこ
とも行われている。しかし防音壁の上部を内側に湾曲さ
せることは防音壁自体の構造が複雑になると共に施工が
複雑であった。It is effective to raise the height of the soundproof wall for this diffracted sound, but there is a limit to raising the height of the soundproof wall due to the wind pressure. It is also practiced to increase the apparent height by curving the road side into an eaves shape or an arch shape to reduce the influence of diffracted sound. However, if the upper part of the soundproof wall is curved inward, the structure of the soundproof wall itself is complicated and the construction is complicated.
【０００４】上記問題に対処するため、例えば特開平６
−２３５２０９号公報に記載される如く、遮音壁の上端
に沿って筒状の吸音装置を取付けることが提案されてい
る。この吸音装置は、亜鉛鉄板の如き内面板と多孔のア
ルミ板の如き多孔板からなる表面板とでガラス繊維の如
き吸音材が挟持された吸音体から構成され、該吸音体を
概ね上下方向に立ち上がる下壁部と、その上部から断面
略半円弧状に膨出する庇部と、庇部に連続する緩凸弧状
の頂壁部とからなる筒状の長尺材に構成し、下壁部に形
成した固着部を、遮音壁の上端の左右両外側に固着され
たボルトにナットで固定させることにより、遮音壁の上
端に固着されるようになされている。そしてこの吸音装
置により遮音壁の上端から廻り込む音を遮ると共に吸音
して回折音を減少させようとするものである。In order to deal with the above problem, for example, Japanese Patent Laid-Open No. Hei 6
As described in JP-A-235209, it is proposed to mount a cylindrical sound absorbing device along the upper end of the sound insulation wall. This sound absorbing device is composed of a sound absorbing body in which a sound absorbing material such as glass fiber is sandwiched between an inner surface plate such as a zinc iron plate and a surface plate made of a perforated plate such as a porous aluminum plate, and the sound absorbing body is substantially vertically moved. The lower wall portion is formed as a tubular long member including a rising lower wall portion, an eave portion that bulges in a substantially semi-circular cross section from the upper portion, and a gently convex arc-shaped top wall portion that is continuous with the eave portion. The fixing portion formed on the sound insulation wall is fixed to the upper end of the sound insulation wall by fixing it to the bolts fixed to both left and right outer sides of the upper end of the sound insulation wall. With this sound absorbing device, the sound that wraps around from the upper end of the sound insulating wall is blocked and the sound is absorbed to reduce the diffracted sound.
【０００５】しかしながらこの吸音装置は、表面板が多
孔のアルミ板の如き多孔板からなるので、開孔率にもよ
るがこの表面材の孔以外の部分で反射した反射音が発生
し、また孔部分から吸音材内に入射されても一部は吸音
されるものの、一部は吸音されずに内面板で反射されて
外部に放出され、また吸音も表面板と内面板との間の吸
音材でのみ行われ、この吸音材の厚み分だけの吸音性能
しか得られず、しかも吸音材のみによる場合は低周波領
域での吸音性能が劣る等、吸音効果において充分とは言
えないところがあった。またこの吸音装置の取付けは遮
音壁の上端の左右両外側からの作業になるため、例えば
道路側からだけしか作業のできない所では、取付けに支
障があった。However, in this sound absorbing device, since the surface plate is made of a perforated plate such as a porous aluminum plate, a reflected sound is generated at a portion other than the holes of the surface material depending on the open area ratio, and Although part of the sound is absorbed even if it enters the sound absorbing material from a portion, it is not absorbed but is reflected by the inner surface plate and is emitted to the outside, and the sound absorbing material is also a sound absorbing material between the surface plate and the inner surface plate. However, the sound absorbing performance is not sufficient in the low frequency region because the sound absorbing performance is obtained only by the thickness of the sound absorbing material, and the sound absorbing performance is poor in the low frequency region when only the sound absorbing material is used. Further, since the installation of the sound absorbing device is performed from both the left and right outside of the upper end of the sound insulation wall, there is a hindrance to the installation, for example, in a place where only the road side can be operated.
【０００６】そこで本発明は上記の如き問題を解決し、
防音壁の上縁部に沿って取付けられ、防音壁の上端から
廻り込む音を効果的に遮ると共に吸音し、回折音を減少
させる防音装置およびそれが取付けられた防音壁を提供
せんとするものである。Therefore, the present invention solves the above problems,
A soundproof device installed along the upper edge of the soundproof wall, which effectively blocks the sound coming from the upper end of the soundproof wall, absorbs sound, and reduces diffracted sound, and a soundproof wall provided with the soundproof device. Is.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
に、本発明は次のような構成としている。すなわちこの
発明に係る防音装置は、防音壁の上縁部に沿って取付け
られる長尺状の防音装置であって、少なくとも表面側の
側壁部から上壁部にかけて吸音材からなる筒状体の内部
に、上壁部の背後に庇状に配置された上部遮音板と、少
なくとも表面側の側壁部の背後に空気層を設けてアーチ
状に折曲されて配置された中仕切遮音板とを有すること
を特徴とするものであり、またこの発明に係る防音壁
は、少なくとも表面側の側壁部から上壁部にかけて吸音
材からなる筒状体の内部に、上壁部の背後に庇状に配置
された上部遮音板と、少なくとも表面側の側壁部の背後
に空気層を設けてアーチ状に折曲されて配置された中仕
切遮音板とを有する防音装置が、上縁部に沿って取付け
られたことを特徴とするものである。In order to achieve the above object, the present invention has the following arrangement. That is, the soundproofing device according to the present invention is a long soundproofing device that is attached along the upper edge of the soundproof wall, and the inside of the tubular body made of a sound absorbing material at least from the front side wall to the upper wall. And an upper sound insulation plate arranged in the form of an eaves behind the upper wall portion, and a partition sound insulation plate arranged in an arch shape by providing an air layer behind at least the side wall portion on the front surface side. Further, the soundproof wall according to the present invention is arranged in an eaves shape behind the upper wall portion inside a tubular body made of a sound absorbing material from at least the side wall portion on the front surface side to the upper wall portion. A sound insulation device having an upper sound insulation plate and a partition sound insulation plate arranged in an arch shape by providing an air layer behind at least the side wall on the front surface side is attached along the upper edge portion. It is characterized by that.
【０００８】[0008]
【作用】この発明による防音装置およびそれが取付けら
れた防音壁によれば、筒状体内にアーチ状に折曲された
中仕切遮音板と庇状の上部遮音板が配置されているの
で、防音壁の上端から廻り込もうとする音は、この筒状
体内に入射されてアーチ状の中仕切遮音板に遮られ、さ
らに庇状の上部遮音板でも遮られると共に庇状の両側端
部、すなわち表面側の側端部と裏面側の側端部とで２回
回折されるため、防音壁の見かけ上の高さが高くなり、
回折音が効果的に減衰される。According to the soundproofing device and the soundproofing wall to which the soundproofing device is attached according to the present invention, since the partition partition soundproof plate bent in an arch shape and the eave-shaped upper soundproof plate are arranged in the cylindrical body, The sound that tries to wrap around from the upper end of the wall is incident on this cylindrical body and is blocked by the arch-shaped partition sound-insulating plate, and is also blocked by the eave-shaped upper sound-insulating plate, and both eaves-shaped end parts, that is, Since it is diffracted twice by the side edge on the front side and the side edge on the back side, the apparent height of the soundproof wall increases,
Diffracted sound is effectively attenuated.
【０００９】また筒状体は、少なくとも、音源側の側壁
部、すなわち表面側の側壁部から上壁部にかけて吸音材
から構成されているので、前記側壁部から上壁部にかけ
て筒状体内に入射された音は、これら吸音材により吸音
されると共に、前記側壁部と中仕切遮音板との間に空気
層が設けられているため、吸音材を透過して中仕切遮音
板で反射される音は空気層を共鳴室として減衰され、し
かも低周波領域の音もこの空気層で減衰され、これらの
吸音効果により回折音が減衰される。Further, since the tubular body is composed of at least the sound source side wall portion, that is, the sound absorbing material from the side wall portion on the front surface side to the upper wall portion, it is incident on the tubular body from the side wall portion to the upper wall portion. The absorbed sound is absorbed by these sound absorbing materials, and since the air layer is provided between the side wall portion and the partition sound insulating plate, the sound is transmitted through the sound absorbing material and reflected by the sound insulating partition plate. Is attenuated by using the air layer as a resonance chamber, and the sound in the low frequency region is also attenuated by this air layer, and the diffracted sound is attenuated by these sound absorbing effects.
【００１０】[0010]
【実施例】次に、本発明の実施例について図面を参照
し、具体的に説明する。Embodiments of the present invention will now be specifically described with reference to the drawings.
【００１１】まず図１は本発明防音装置の一実施例を示
す平面図、図２はその断面図である。図１〜２の実施例
における防音装置Ｐは、表面側の側壁部１１から上壁部
１２にかけて吸音材からなる長尺状の筒状体１の内部
に、上部遮音板２と中仕切遮音板３が設けられ、且つ前
記上部遮音板２は上壁部１２の背後に配置されると共に
幅方向両側に張り出された庇状となされ、また中仕切遮
音板３は、音源側、すなわち表面側の側壁部１１の背後
に空気層４を設けて配置されると共にアーチ状に折曲さ
れたものである。なお５は防音壁であり、該防音壁５の
上縁部に沿って本実施例の防音装置Ｐが取付けられて、
本発明による防音壁５が構成されている。前記防音壁５
は既設のものであって、防音装置Ｐが後付けされてもよ
いし、新設の防音壁５と共に防音装置Ｐが取付けられて
もよい。前記防音壁５は遮音タイプ、防音タイプ、遮音
防音タイプ等、適宜公知のものが適用される。FIG. 1 is a plan view showing an embodiment of the soundproofing device of the present invention, and FIG. 2 is a sectional view thereof. The soundproofing device P in the embodiment of FIGS. 1 and 2 includes an upper sound insulation plate 2 and a partition sound insulation plate inside a long tubular body 1 made of a sound absorbing material from a side wall portion 11 on the front surface side to an upper wall portion 12. 3 is provided, and the upper sound insulation plate 2 is arranged behind the upper wall portion 12 and has an eaves-like shape extending to both sides in the width direction. The air layer 4 is provided behind the side wall portion 11 and is bent in an arch shape. In addition, 5 is a soundproof wall, and the soundproof device P of this embodiment is attached along the upper edge of the soundproof wall 5,
The soundproof wall 5 according to the present invention is configured. The soundproof wall 5
Is an existing one, and the soundproof device P may be attached later, or the soundproof device P may be attached together with the new soundproof wall 5. As the soundproof wall 5, a publicly known soundproof type such as a soundproof type, a soundproof type, and a soundproof and soundproof type is applied.
【００１２】前記筒状体１を構成する吸音材は、吸音性
を有するものであれば特に限定されないが、保形性を有
し、且つ耐蝕性に優れるアルミ繊維、連続気泡のアルミ
発泡体、連続気泡のポリオレフィン系発泡体、発泡ウレ
タン等が好適に使用される。また筒状体１は、音源と反
対側、すなわち裏面側の側壁部１３も前記の如き吸音材
から形成されていてもよいが、少なくとも、音源側、す
なわち表面側の側壁部１１から上壁部１２にかけては吸
音材から構成されている必要があり、そのような構成で
あれば、その形状は特に限定されるものではなく、例え
ば本実施例では、表面側の側壁部１１から上壁部１２に
かけての形状が、内部に設けられた上部遮音板２と中仕
切遮音板３との形状に沿い、且つ前記側壁部１１と中仕
切遮音板３との間に充分な空気層４を設けるべく、側壁
部１１の上部から上壁部１２にかけて膨出された略マッ
シュルーム形を呈しているが、図３の如き円筒の如き形
状にし、側壁部１１と中仕切遮音板３との間の空気層４
をできるだけ大きくとれるようにしてもよく、この他三
角筒状でもよいし、四角筒状等であってもよい。The sound absorbing material constituting the cylindrical body 1 is not particularly limited as long as it has a sound absorbing property, but it is an aluminum fiber having a shape retaining property and excellent in corrosion resistance, an aluminum foam having open cells, Open-celled polyolefin foam, urethane foam, etc. are preferably used. Also, in the tubular body 1, the side wall 13 on the side opposite to the sound source, that is, the back side may be formed of the sound absorbing material as described above, but at least the side wall 11 from the sound source side, that is, the side wall 11 to the upper wall. It is necessary to be composed of a sound absorbing material up to 12, and the shape is not particularly limited as long as it is such a structure. For example, in this embodiment, for example, from the side wall portion 11 on the front surface side to the upper wall portion 12 In order to provide a sufficient air layer 4 between the side wall 11 and the partition sound-insulating plate 3, the shape along the line is in line with the shapes of the upper sound-insulating plate 2 and the partition sound-insulating plate 3 provided inside. Although it has a substantially mushroom shape that bulges from the upper portion of the side wall portion 11 to the upper wall portion 12, the air layer 4 between the side wall portion 11 and the partition sound-insulating plate 3 has a cylindrical shape as shown in FIG.
May be made as large as possible, and may have a triangular tubular shape, a square tubular shape, or the like.
【００１３】さらに前記筒状体１は、その底壁部１４を
金属板等で、図２の如く防音壁５の上縁部の形状に対応
した形状とし、防音壁５の上縁部に筒状体１の底壁部１
４が嵌合されて取付けられるようになされていれば、防
音壁５の上縁部に防音装置Ｐがガタや隙間がなく安定し
て取付けられるので好ましい。Further, the tubular body 1 has a bottom wall portion 14 made of a metal plate or the like, and has a shape corresponding to the shape of the upper edge portion of the soundproof wall 5 as shown in FIG. Bottom wall portion 1 of the strip 1
It is preferable that 4 is fitted and mounted so that the soundproofing device P can be stably mounted on the upper edge portion of the soundproof wall 5 with no play or gap.
【００１４】さらにまた防音壁５の支柱５１が断面Ｈ形
であれば、図１の如く、筒状体１の側端部に沿って凹溝
１５を設け、且つ該凹溝１５の底部から嵌合凸部６１を
突設し、該嵌合凸部６１を断面Ｈ形支柱５１の相対向す
るフランジ５２間に挿入すると共に嵌合凸部６１とフラ
ンジ５２内面との間に板バネ５３を弾挿させるようにす
れば、フランジ５２間に上から嵌合凸部６１を挿入しつ
つ、防音装置Ｐを支柱５１間に落とし込み、次いで嵌合
凸部６１とフランジ５２内面との間に前記板バネ５３を
弾挿させるだけで、防音装置Ｐを容易且つ素早く防音壁
５の支柱５１に取付けることができる。またフランジ５
２の上から落とし込む一方側からだけの作業で防音装置
Ｐが取付けられるため、例えば道路側からだけしか作業
のできない所であっても、道路側からだけの作業で取付
けられる。Furthermore, if the pillar 51 of the soundproof wall 5 has an H-shaped cross section, as shown in FIG. 1, a groove 15 is provided along the side end of the tubular body 1 and the groove 15 is fitted from the bottom. A projecting projection 61 is formed, the fitting projection 61 is inserted between the flanges 52 of the H-shaped cross-section 51 facing each other, and a leaf spring 53 is elastically fitted between the fitting projection 61 and the inner surface of the flange 52. With this configuration, the soundproofing device P is dropped between the columns 51 while inserting the fitting convex portion 61 from above between the flanges 52, and then the leaf spring is provided between the fitting convex portion 61 and the inner surface of the flange 52. The soundproofing device P can be easily and quickly attached to the support column 51 of the soundproof wall 5 only by inserting 53 into the soundproof wall. Also flange 5
Since the soundproofing device P is attached only from one side by dropping it from above 2, the soundproofing device P can be attached only from the road side even if the work can be performed only from the road side.
【００１５】なお前記嵌合凸部６１は、本実施例では板
バネ５３の応力を考慮して１．６ｍｍ以上の金属板を曲
げ加工されて、嵌合凸部６１とその両側に延設された立
設片６２とからなる端部材６が形成され、該端部材６が
筒状体１の凹溝１５内に取付けられることにより形成さ
れている。そしてこの嵌合凸部６１が支柱５１のフラン
ジ５２間に挿入されると、フランジ５２外面が両側の立
設片６２で覆われ、筒状体１の側端部の強度確保が図ら
れている。In this embodiment, the fitting convex portion 61 is formed by bending a metal plate of 1.6 mm or more in consideration of the stress of the leaf spring 53 and extending the fitting convex portion 61 and both sides thereof. The end member 6 including the upright piece 62 is formed, and the end member 6 is formed by being mounted in the concave groove 15 of the tubular body 1. When the fitting convex portion 61 is inserted between the flanges 52 of the support column 51, the outer surface of the flange 52 is covered by the standing pieces 62 on both sides, and the strength of the side end portion of the tubular body 1 is ensured. .
【００１６】次に筒状体１の内部に設けられた上部遮音
板２と中仕切遮音板３については、遮音性を有するもの
であれば、特にその材質は限定されるものではないが、
遮音性と筒状体１の形状を保持させ得る剛性とを考慮す
れば、金属板や高比重の合成樹脂板が好適に使用され
る。また前記上部遮音板２の形状は、幅方向両側に張り
出された庇状となされていれば特に限定されるものでは
ないが、遮音効果を高めるために、図２の如く、筒状体
１内面と両側端部２１との間に隙間を設けずに筒状体１
の幅一杯まで張り出されているのが好ましい。さらに上
部遮音板２と上壁部１２との間に空気層７を設ければ、
上壁部１２から廻り込んで入射される音も効果的に吸音
されるので好ましい。また本実施例では上部遮音板２の
中央部を突設させて支持部２２を形成し、一方筒状体１
の上壁部１２から押さえ板２３を当接し、この押さえ板
２３を支持部２２にビス等で固定することにより、上部
遮音板２と筒状体１とが固定されている。Next, the upper sound insulation plate 2 and the partition sound insulation plate 3 provided inside the tubular body 1 are not particularly limited in their materials as long as they have sound insulation properties.
Considering the sound insulation and the rigidity capable of maintaining the shape of the tubular body 1, a metal plate or a synthetic resin plate having a high specific gravity is preferably used. Further, the shape of the upper sound insulation plate 2 is not particularly limited as long as it is an eaves shape which is projected to both sides in the width direction, but in order to enhance the sound insulation effect, as shown in FIG. The tubular body 1 without a gap between the inner surface and both end portions 21.
It is preferable that it is extended to the full width of. Furthermore, if an air layer 7 is provided between the upper sound insulation plate 2 and the upper wall portion 12,
The sound that wraps around and enters from the upper wall portion 12 is also effectively absorbed, which is preferable. Further, in the present embodiment, the support portion 22 is formed by projecting the central portion of the upper sound insulation plate 2, and the cylindrical body 1
The upper sound insulating plate 2 and the tubular body 1 are fixed by abutting the pressing plate 23 from the upper wall portion 12 and fixing the pressing plate 23 to the support portion 22 with screws or the like.
【００１７】また中仕切遮音板３は、表面側の側壁部１
１に対して凹アーチ状に折曲された形状であれば特に限
定されるものではないが、音源の入射角を勘案すると、
そのアーチの曲率は、音源が近接している場合は小さ
く、離れている場合は大きくするのが好ましい。また本
実施例では、中仕切遮音板３の上端部３１を上部遮音板
２の一方の側端部２１に固定させ、また下端部３２を筒
状体１の下部内面に当接させ、中仕切遮音板３と上部遮
音板２とを連結すると共に、上部遮音板２との間や筒状
体１の内面との間からの音洩れを防止している。The partition wall sound insulating plate 3 has a side wall portion 1 on the front surface side.
The shape is not particularly limited as long as it is a concave arch shape with respect to 1, but considering the incident angle of the sound source,
The curvature of the arch is preferably small when the sound sources are close to each other and large when the sound sources are far from each other. Further, in this embodiment, the upper end 31 of the middle partition sound-insulating plate 3 is fixed to one side end 21 of the upper sound-insulating plate 2, and the lower end 32 is brought into contact with the inner surface of the lower part of the tubular body 1 to form the middle partition. The sound insulation plate 3 and the upper sound insulation plate 2 are connected to each other, and sound leakage from the upper sound insulation plate 2 and the inner surface of the tubular body 1 is prevented.
【００１８】なお吸音性をさらに高めるために、図４の
如く、上壁部１２とその背後の上部遮音板２との間、お
よび表面側の側壁部１１とその背後の中仕切遮音板３と
の間等に、それぞれグラスウール等の吸音材料８を配設
してもよく、また図５の如く、表面側の側壁部１１の前
面に、筒状または棒状の吸音体９を付設することによ
り、吸音面積を増加させて吸音効果をさらに向上させる
こともできる。この吸音体９の形状は断面が円形、四角
形、その他異形等、特に限定されるものではなく、要は
この吸音体９を付設することにより吸音面積が増加すれ
ばよい。In order to further enhance the sound absorbing property, as shown in FIG. 4, between the upper wall portion 12 and the upper sound insulating plate 2 behind it, and between the side wall portion 11 on the front side and the partition sound insulating plate 3 behind it. The sound absorbing material 8 such as glass wool may be disposed between the two, and as shown in FIG. 5, by attaching the cylindrical or rod-shaped sound absorbing body 9 to the front surface of the side wall portion 11 on the front surface side, The sound absorbing area can be increased to further improve the sound absorbing effect. The shape of the sound absorbing body 9 is not particularly limited such that the sound absorbing body 9 has a circular cross section, a quadrangular shape, and other irregular shapes, and the point is that the sound absorbing area can be increased by attaching the sound absorbing body 9.
【００１９】[0019]
【発明の効果】この発明による防音装置およびそれが取
付けられた防音壁によれば、筒状体内にアーチ状に折曲
された中仕切遮音板と庇状の上部遮音板が配置されてい
るので、防音壁の上端から廻り込もうとする音は、この
筒状体内に入射されてアーチ状の中仕切遮音板に遮ら
れ、また 庇状の上部遮音板でも遮られると共に庇状の
両側端部、すなわち表面側の側端部と裏面側の側端部と
で２回回折されるため、防音壁５の見かけ上の高さが高
くなり、回折音が効果的に減衰される。According to the soundproofing device and the soundproofing wall to which the soundproofing device is attached according to the present invention, since the partition partition sound-insulating plate and the eave-shaped upper sound-insulating plate bent in an arch shape are arranged in the cylindrical body. The sound that wraps around from the upper end of the soundproof wall is incident on this cylindrical body and is blocked by the arch-shaped partition sound-insulating plate, and is also blocked by the eave-shaped upper sound-insulating plate and both eave-shaped end parts. That is, since the side edge on the front surface side and the side edge on the back surface side are diffracted twice, the apparent height of the soundproof wall 5 is increased, and the diffracted sound is effectively attenuated.
【００２０】また筒状体は、少なくとも、音源側の側壁
部、すなわち表面側の側壁部から上壁部にかけて吸音材
から構成されているので、前記側壁部から上壁部にかけ
て筒状体内に入射された音は、これら吸音材により吸音
されると共に、前記側壁部と中仕切遮音板との間に空気
層が設けられているため、吸音材を透過して中仕切遮音
板で反射される音は空気層を共鳴室として減衰され、し
かも低周波領域の音もこの空気層で減衰され、これらの
吸音効果により回折音が減衰される。Further, since the tubular body is composed of at least the side wall portion on the sound source side, that is, the sound absorbing material from the side wall portion on the front surface side to the upper wall portion, it enters the tubular body from the side wall portion to the upper wall portion. The absorbed sound is absorbed by these sound absorbing materials, and since the air layer is provided between the side wall portion and the partition sound insulating plate, the sound is transmitted through the sound absorbing material and reflected by the sound insulating partition plate. Is attenuated by using the air layer as a resonance chamber, and the sound in the low frequency region is also attenuated by this air layer, and the diffracted sound is attenuated by these sound absorbing effects.
【図１】本発明防音装置の一実施例を示す平面図であ
る。FIG. 1 is a plan view showing an embodiment of a soundproofing device of the present invention.
【図２】図１の断面図である。FIG. 2 is a sectional view of FIG.
【図３】本発明防音装置の他の実施例を示す断面図であ
る。FIG. 3 is a cross-sectional view showing another embodiment of the soundproofing device of the present invention.
【図４】本発明防音装置のさらに他の実施例を示す断面
図である。FIG. 4 is a sectional view showing still another embodiment of the soundproofing device of the present invention.
【図５】本発明防音装置のさらに他の実施例を示す断面
図である。FIG. 5 is a cross-sectional view showing still another embodiment of the soundproofing device of the present invention.
Ｐ 防音装置 １ 筒状体 １１ 表面側の側壁部 １２ 上壁部 １３ 裏面側の側壁部 １４ 底壁部 １５ 凹溝 ２ 上部遮音板 ２１ 側端部 ２２ 支持部 ２３ 押さえ板 ３ 中仕切遮音板 ３１ 上端部 ３２ 下端部 ４ 空気層 ５ 防音壁 ５１ 支柱 ５２ フランジ ５３ 板バネ ６ 端部材 ６１ 嵌合凸部 ６２ 立設片 ７ 空気層 ８ 吸音材料 ９ 吸音体 P Sound insulation device 1 Cylindrical body 11 Side wall part 12 on the front surface side 12 Upper wall part 13 Side wall part on the back surface side 14 Bottom wall part 15 Groove 2 Upper sound insulation plate 21 Side end part 22 Support part 23 Press plate 3 Partition sound insulation plate 31 Upper end 32 Lower end 4 Air layer 5 Soundproof wall 51 Strut 52 Flange 53 Leaf spring 6 End member 61 Fitting convex part 62 Standing piece 7 Air layer 8 Sound absorbing material 9 Sound absorber
Claims (7)
尺状の防音装置であって、少なくとも表面側の側壁部か
ら上壁部にかけて吸音材からなる筒状体の内部に、上壁
部の背後に庇状に配置された上部遮音板と、少なくとも
表面側の側壁部の背後に空気層を設けてアーチ状に折曲
されて配置された中仕切遮音板とを有することを特徴と
する防音装置。1. A long soundproofing device mounted along an upper edge of a soundproof wall, wherein a top wall is provided inside a tubular body made of a sound absorbing material at least from a side wall portion on the front surface side to the upper wall portion. An upper part sound insulation plate arranged in the shape of an eaves behind the part, and an intermediate partition sound insulation plate arranged in an arch shape by providing an air layer behind at least the side wall portion on the front surface side, Soundproofing device.
遮音板との間に空気層が設けられた請求項１記載の防音
装置。2. The soundproofing device according to claim 1, wherein an air layer is provided between the upper wall portion and the upper sound insulating plate arranged behind the upper wall portion.
音板との間、および表面側の側壁部とその背後の中仕切
遮音板との間に、それぞれ吸音材料が配設されたことを
特徴とする請求項１または２記載の防音装置。3. A sound absorbing material is disposed at least between the upper wall portion and the upper sound insulation plate behind it, and between the side wall portion on the front surface side and the partition sound insulation plate behind it. The soundproofing device according to claim 1 or 2, which is characterized in that.
状の吸音体が付設された請求項１、２または３記載の防
音装置。4. The soundproof device according to claim 1, 2 or 3, wherein a cylindrical or rod-shaped sound absorber is attached to the front surface of the side wall portion on the front surface side.
状に対応した形状となされ、防音壁の上縁部に筒状体の
底壁部が嵌合されて取付けられるようになされた請求項
１、２、３または４記載の防音装置。5. The bottom wall portion of the tubular body has a shape corresponding to the shape of the upper edge portion of the sound insulation wall, and the bottom wall portion of the tubular body is fitted and attached to the upper edge portion of the soundproof wall. The soundproofing device according to claim 1, 2, 3, or 4.
れ、該凹溝の底部に嵌合凸部が突設され、該嵌合凸部が
防音壁の断面Ｈ形支柱の相対向するフランジ間に挿入さ
れると共に嵌合凸部とフランジ内面との間に板バネが弾
挿されるようになされた請求項１、２、３、４または５
記載の防音装置。6. A concave groove is provided along a side end of the tubular body, and a fitting convex portion is provided at a bottom portion of the concave groove so that the fitting convex portion has a cross section of an H-shaped cross section of a soundproof wall. The leaf spring is inserted between the flanges facing each other and is elastically inserted between the fitting protrusion and the inner surface of the flange.
Soundproofing device described.
かけて吸音材からなる筒状体の内部に、上壁部の背後に
庇状に配置された上部遮音板と、少なくとも表面側の側
壁部の背後に空気層を設けてアーチ状に折曲されて配置
された中仕切遮音板とを有する防音装置が、上縁部に沿
って取付けられた防音壁。7. An upper sound insulating plate arranged in a canopy shape behind the upper wall portion inside a tubular body made of a sound absorbing material at least from the side wall portion on the front surface side to the upper wall portion, and at least the side wall portion on the front surface side. A soundproof wall in which a soundproofing device having an air layer behind it and being bent and arranged in an arch shape and a partitioning sound insulating plate is attached along the upper edge portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16064595A JP3290333B2 (en) | 1995-06-27 | 1995-06-27 | Soundproofing device and soundproofing wall to which it is mounted |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16064595A JP3290333B2 (en) | 1995-06-27 | 1995-06-27 | Soundproofing device and soundproofing wall to which it is mounted |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0913331A true JPH0913331A (en) | 1997-01-14 |
| JP3290333B2 JP3290333B2 (en) | 2002-06-10 |
Family
ID=15719419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16064595A Expired - Fee Related JP3290333B2 (en) | 1995-06-27 | 1995-06-27 | Soundproofing device and soundproofing wall to which it is mounted |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3290333B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101052880B1 (en) * | 2010-11-03 | 2011-07-29 | 허이숙 | Sound interference device have a funtion sound abosorption |
| CN105803962A (en) * | 2016-03-23 | 2016-07-27 | 江苏金阳交通工程有限公司 | Tilting axis type muffler |
-
1995
- 1995-06-27 JP JP16064595A patent/JP3290333B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101052880B1 (en) * | 2010-11-03 | 2011-07-29 | 허이숙 | Sound interference device have a funtion sound abosorption |
| CN105803962A (en) * | 2016-03-23 | 2016-07-27 | 江苏金阳交通工程有限公司 | Tilting axis type muffler |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3290333B2 (en) | 2002-06-10 |
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