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公开(公告)号：US09813820B2
公开(公告)日：2017-11-07
申请号：US15023419
申请日：2015-02-23
Inventor： Takafumi Yuasa , Kenji Yamauchi , Satoshi Takayama , Koichi Nakayama , Ryo Kuribayashi
CPC classification number: H04R9/06 , F21V33/0056 , G02B6/002 , G02B6/0055 , H04R1/028 , H04R7/125 , H04R7/22 , H04R2499/13
Abstract: A loudspeaker includes a light-emitting element, a frame, a magnetic circuit provided with a magnetic gap, a diaphragm, a voice coil bobbin, and a voice coil. The diaphragm has an inner circumferential end including an end face facing the light-emitting element, and a light guide having a reflecting surface formed thereon and provided at a position where light enters from the end face. The first end of the voice coil bobbin is joined to the inner circumferential end of the diaphragm, and the second end is inserted into the magnetic gap. The voice coil is wound around the second end of the voice coil bobbin. Light from the light-emitting element enters the end face of the diaphragm, is diffused by the light guide, and is reflected on the reflecting surface.
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2.发明授权公开(公告)号：US09628916B2
公开(公告)日：2017-04-18
申请号：US15023681
申请日：2015-03-23
Inventor： Takafumi Yuasa , Kenji Yamauchi , Satoshi Takayama , Koichi Nakayama , Ryo Kuribayashi
CPC classification number: H04R7/125 , B60R11/0217 , F21V33/0056 , G02B6/0055 , H04R1/025 , H04R1/028 , H04R7/12 , H04R9/025 , H04R9/04 , H04R9/045 , H04R2307/021 , H04R2307/025 , H04R2307/029 , H04R2499/11
Abstract: A loudspeaker includes a light-emitting element, a frame, a magnetic circuit provided with a magnetic gap, a diaphragm, a voice coil bobbin, and a voice coil. The diaphragm includes an inner peripheral end portion having an end face to which a light-emitting element is coupled, a light-guide portion, a reflective surface, and an outer peripheral end portion coupled to the frame. The first end of the voice coil bobbin is coupled to the inner peripheral end portion of the diaphragm, and the second end thereof is inserted into the magnetic gap. A voice coil is wound on the second end of the voice coil bobbin.
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公开(公告)号：US09756426B2
公开(公告)日：2017-09-05
申请号：US15023383
申请日：2015-08-17
Inventor： Hiroko Tsutsumi , Koichi Nakayama , Satoshi Koura , Kazuhiro Oshika , Mitsukazu Kuze , Tomonori Shibuya
CPC classification number: H04R9/063 , H04R1/24 , H04R7/04 , H04R7/127 , H04R7/16 , H04R7/22 , H04R7/24 , H04R9/02 , H04R2209/022 , H04R2209/024 , H04R2209/027 , H04R2307/207 , H04R2400/07 , H04R2400/11
Abstract: A loudspeaker includes a diaphragm body having a dome shape protruding upwardly, a magnetic circuit disposed below the diaphragm body, a voice coil coupled to the diaphragm body, an edge coupled to an outer circumference of the diaphragm body, and a frame coupled to the edge. The edge includes a first coupling portion provided at an outer circumference of the edge, a second coupling portion provided at an inner circumference of the edge and coupled to an outer circumference of the diaphragm body, and a roll portion disposed between the first coupling portion and the second coupling portion. The edge has a surface facing downward. The frame has a connecting surface disposed below the second coupling portion and coupled to the surface of the edge at the first coupling portion of the edge. This loudspeaker can decrease distortion of sound.
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4.发明授权公开(公告)号：US09596545B2
公开(公告)日：2017-03-14
申请号：US15023681
申请日：2015-03-23
Inventor： Takafumi Yuasa , Kenji Yamauchi , Satoshi Takayama , Koichi Nakayama , Ryo Kuribayashi
Abstract: A loudspeaker includes a light-emitting element, a frame, a magnetic circuit provided with a magnetic gap, a diaphragm, a voice coil bobbin, and a voice coil. The diaphragm includes an inner peripheral end portion having an end face to which a light-emitting element is coupled, a light-guide portion, a reflective surface, and an outer peripheral end portion coupled to the frame. The first end of the voice coil bobbin is coupled to the inner peripheral end portion of the diaphragm, and the second end thereof is inserted into the magnetic gap. A voice coil is wound on the second end of the voice coil bobbin.
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