专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4158401A Device for controlling a propagation direction of noise 失效
标题翻译：用于控制噪声传播方向的装置
公开(公告)号：US4158401A
公开(公告)日：1979-06-19
申请号：US703985
申请日：1976-07-09
申请人： Masayasu Matsumoto , Kazuyoshi Iida , Yoshikazu Kondo , Keiichiro Mizuno , Sadao Nomoto , Noriaki Murayama , Kei Watanabe , Tomonori Katayama
发明人： Masayasu Matsumoto , Kazuyoshi Iida , Yoshikazu Kondo , Keiichiro Mizuno , Sadao Nomoto , Noriaki Murayama , Kei Watanabe , Tomonori Katayama
IPC分类号： E01B2/00 , E01F8/00 , G10K11/175 , G10K11/00 , E04H17/00
CPC分类号： E01B2/003 , E01F8/0076 , G10K11/175 , E01B19/003
摘要： A device for controlling a propagation direction of noise, which is preferably associated with a sound insulating wall to significantly improve its sound reducing effect of alleviating noise emitted from a noise source such as a railroad, highway and the like on which an electric car and automobiles run. The device comprises a hollow structural body composed of a plurality of elongated vertical hollow passages arranged at right angles to a substrate and spaced apart from each other by means of partition walls. The upper noise inlet side surface of the hollow passages face a propagation direction of noise emitted from the noise source and serve to refract and lag in phase the noise passed therethrough, thereby producing a sound reducing region located intermediate between a direct sound propagation and the refracted sound propagation. In one embodiment, a pair of hollow structural bodies are arranged in opposition to each other to form an arch type device. In another embodiment, the hollow structural body may be provided at its noise inlet or outlet side surface with an extension of the hollow passages.
摘要翻译：一种用于控制噪声传播方向的装置，其优选地与隔音壁相关联，以显着改善其减轻从诸如铁路，公路等的噪声源发出的噪声的声音降低效果，其中电动汽车和汽车跑。该装置包括中空结构体，该中空结构体由多个细长的垂直中空通道构成，该垂直中空通道以与基底成直角的方式布置并且通过分隔壁彼此间隔开。中空通道的上部噪声入口侧表面面对从噪声源发出的噪声的传播方向，并且用于使通过的噪声相位折射和滞后，从而产生位于直接声音传播和折射之间的声音降低区域声音传播。在一个实施例中，一对中空结构体彼此相对布置以形成拱形装置。在另一个实施例中，中空结构体可以设置在其噪声入口或出口侧表面，并具有中空通道的延伸部分。

IPRDB

热门服务

关于我们

友情链接

联系方式