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A platform for research: civil engineering, architecture and urbanism
SOUND ABSORPTION PANEL
PROBLEM TO BE SOLVED: To provide a sound absorption panel provided with good sound absorption performance.SOLUTION: A sound absorption material is arranged between a front plate having a through-hole and a sound insulation plate arranged behind the front plate, and an air layer is provided between the sound absorption material and the sound insulation plate. The sound absorption material is provided with a base material layer and a resistance layer arranged behind the base material layer, and the resistance layer is formed by a material having flow resistance with a larger ventilation characteristic than that of the base material layer. Since the sound absorption material is provided with the base material layer and the resistance layer, a part of noise which enters into the sound absorption material to pass through the base material layer is reflected by the resistance layer, and the reflected sound and the incoming sound cancel each other to improve the efficiency of attenuation of noise, thereby providing good sound absorption efficiency. The sound insulation plate to be arranged behind the sound absorption material may be a sound insulation body provided in a shape other than a plate shape.SELECTED DRAWING: Figure 2
【課題】良好な吸音性能を備える吸音パネルを提供する。【解決手段】透孔を有する前面板と、この前面板の後方に配置させた遮音板の間に吸音材を配置させると共に、前記吸音材と遮音板との間に空気層を設け、吸音材に、基材層と、その後方に配置させる抵抗層とを設け、この抵抗層を前記基材層よりも流れ抵抗の大きな通気性を有する材料で形成する。吸音材が基材層と抵抗層を備えるので、吸音材に入射して基材層を通過する騒音の一部が抵抗層で反射され、この反射音と入射音とが打ち消しあい、騒音の減衰の効率が向上し、良好な吸音効果が得られる。吸音材の後方に配置させる前記遮音板は、板状以外の形状に設けた遮音体としてもよい。【選択図】 図２
SOUND ABSORPTION PANEL
PROBLEM TO BE SOLVED: To provide a sound absorption panel provided with good sound absorption performance.SOLUTION: A sound absorption material is arranged between a front plate having a through-hole and a sound insulation plate arranged behind the front plate, and an air layer is provided between the sound absorption material and the sound insulation plate. The sound absorption material is provided with a base material layer and a resistance layer arranged behind the base material layer, and the resistance layer is formed by a material having flow resistance with a larger ventilation characteristic than that of the base material layer. Since the sound absorption material is provided with the base material layer and the resistance layer, a part of noise which enters into the sound absorption material to pass through the base material layer is reflected by the resistance layer, and the reflected sound and the incoming sound cancel each other to improve the efficiency of attenuation of noise, thereby providing good sound absorption efficiency. The sound insulation plate to be arranged behind the sound absorption material may be a sound insulation body provided in a shape other than a plate shape.SELECTED DRAWING: Figure 2
【課題】良好な吸音性能を備える吸音パネルを提供する。【解決手段】透孔を有する前面板と、この前面板の後方に配置させた遮音板の間に吸音材を配置させると共に、前記吸音材と遮音板との間に空気層を設け、吸音材に、基材層と、その後方に配置させる抵抗層とを設け、この抵抗層を前記基材層よりも流れ抵抗の大きな通気性を有する材料で形成する。吸音材が基材層と抵抗層を備えるので、吸音材に入射して基材層を通過する騒音の一部が抵抗層で反射され、この反射音と入射音とが打ち消しあい、騒音の減衰の効率が向上し、良好な吸音効果が得られる。吸音材の後方に配置させる前記遮音板は、板状以外の形状に設けた遮音体としてもよい。【選択図】 図２
SOUND ABSORPTION PANEL
吸音パネル
OKAZAKI RYOTARO (author) / SUGIMOTO SHIZUKA (author) / MIYAZAKI DAIGO (author)
2018-09-20
Patent
Electronic Resource
Japanese
IPC:
E01F
ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
,
Zusätzliche Baumaßnahmen, wie die Ausstattung von Straßen oder die bauliche Ausbildung von Bahnsteigen, Landeplätzen für Hubschrauber, Wegweisern, Schneezäunen oder dgl.
| European Patent Office | 2015