发明申请
US20150243274A1 SOUND ABSORBING DEVICE, ELECTRONIC DEVICE, AND IMAGE FORMING APPARATUS
有权
声音吸收装置，电子装置和图像形成装置
- 专利标题： SOUND ABSORBING DEVICE, ELECTRONIC DEVICE, AND IMAGE FORMING APPARATUS
- 专利标题（中）： 声音吸收装置，电子装置和图像形成装置
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申请号： US14630789申请日： 2015-02-25
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公开(公告)号： US20150243274A1公开(公告)日： 2015-08-27
- 发明人: Kouta HIRAKAWA , Junichi MURANO , Shoji ASANUMA , Toshihiro SHIMADA , Tsuyoshi ENDO , Hiroki ISHIMITSU , Masahiro ISHIDA , Naoki MATSUDA
- 申请人： Kouta HIRAKAWA , Junichi MURANO , Shoji ASANUMA , Toshihiro SHIMADA , Tsuyoshi ENDO , Hiroki ISHIMITSU , Masahiro ISHIDA , Naoki MATSUDA
- 申请人地址： JP Tokyo
- 专利权人： Ricoh Company, Limited
- 当前专利权人： Ricoh Company, Limited
- 当前专利权人地址： JP Tokyo
- 优先权： JP2014-037537 20140227
- 主分类号： G03G21/00
- IPC分类号： G03G21/00 ; E04B1/82 ; H04B15/00
摘要：
A sound absorbing device including a Helmholtz resonator also includes a projection part having a shape of protruding from an outer wall surface of a communicating part forming plate among the communicating part forming plate and a cavity forming member that are cavity part forming members forming a cavity part of the Helmholtz resonator, and surrounding an opening of a communicating part that causes the cavity part to communicate with the outside.
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