发明授权
- 专利标题： Input device and keyboard device having illumination function
- 专利标题（中）： 具有照明功能的输入装置和键盘装置
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申请号： US12579903申请日： 2009-10-15
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公开(公告)号： US08334794B2公开(公告)日： 2012-12-18
- 发明人: Kazutoshi Watanabe , Hideaki Nagakubo , Takenobu Kimura , Koichi Yamamoto , Katsuyuki Katayama , Naomi Sato , Naoya Akiyama , Shinichiro Kimura , Masahiro Ishida , Naoki Yamada , Keiji Takagi , Toshinobu Hosaka
- 申请人： Kazutoshi Watanabe , Hideaki Nagakubo , Takenobu Kimura , Koichi Yamamoto , Katsuyuki Katayama , Naomi Sato , Naoya Akiyama , Shinichiro Kimura , Masahiro Ishida , Naoki Yamada , Keiji Takagi , Toshinobu Hosaka
- 申请人地址： JP Tokyo
- 专利权人： Alps Electric Co., Ltd.
- 当前专利权人： Alps Electric Co., Ltd.
- 当前专利权人地址： JP Tokyo
- 代理机构： Hunton & Williams LLP
- 优先权： JP2008-267178 20081016; JP2009-067287 20090319; JP2009-067289 20090319
- 主分类号： H03M11/00
- IPC分类号： H03M11/00
摘要：
An input device includes a plurality of manipulation portions; an input function portion manipulated by the manipulation portions to perform an input function; a light guiding sheet facing the rear side of the plurality of manipulation portions; and a light source applying light into the light guiding sheet, wherein a rear surface opposite to a front surface of the light guiding sheet facing the manipulation portions is provided with a plurality of concave portions which is depressed to the inside of the light guiding sheet, wherein each concave portion has a circular opening and an inner surface which is a smooth concave curve surface, and wherein light propagated through the inside of the light guiding sheet is reflected by the inner surface toward the inside of the light guiding sheet, and the light is applied from the front surface of the light guiding sheet to the manipulation portions.