发明公开
EP2914015A4 WATERPROOF SOUND-TRANSMITTING FILM, WATERPROOF SOUND-TRANSMITTING MEMBER PROVIDED WITH SAME, ELECTRONIC EQUIPMENT, ELECTRONIC EQUIPMENT CASE, AND WATERPROOF SOUND-TRANSMITTING STRUCTURE
有权
基本信息:
- 专利标题： WATERPROOF SOUND-TRANSMITTING FILM, WATERPROOF SOUND-TRANSMITTING MEMBER PROVIDED WITH SAME, ELECTRONIC EQUIPMENT, ELECTRONIC EQUIPMENT CASE, AND WATERPROOF SOUND-TRANSMITTING STRUCTURE
- 专利标题（中）：支撑膜的防水透声，防水通音元素的电子设备，外壳为电子设备及支护结构水的密度SOUND
- 申请号：EP14839202 申请日：2014-07-02
- 公开(公告)号：EP2914015A4 公开(公告)日：2016-02-24
- 发明人： MORI MASAAKI , FURUYAMA SATORU
- 申请人： NITTO DENKO CORP
- 专利权人： NITTO DENKO CORP
- 当前专利权人： NITTO DENKO CORP
- 优先权： JP2013179686 2013-08-30
- 主分类号： H04R1/00
- IPC分类号： H04R1/00 ; H04B1/38 ; H04B1/3888 ; H04M1/03 ; H04M1/18 ; H04R1/44
摘要：
A waterproof sound-transmitting membrane of the present disclosure includes: a non-porous resin film having formed therein a plurality of through holes extending through a thickness of the non-porous resin film; and a liquid-repellent layer formed on a principal surface of the resin film and having openings at positions corresponding to positions of the plurality of through holes. The through holes have a diameter of 4.0 µm or more and 12.0 µm or less, and the waterproof sound-transmitting membrane has a through-thickness air permeability of 2.0 cm 3 /(cm 2 €¢ second) or more and 50 cm 3 /(cm 2 €¢ second) or less in terms of Frazier number as measured according to JIS L 1096. With this waterproof sound-transmitting membrane placed over an opening of a housing of an electronic device or the like, entry of water into the housing from outside can be prevented, in addition to which the characteristics of sound transmitted through the membrane can be kept even when the membrane has a reduced effective area.