公开(公告)号：US09868392B2

公开(公告)日：2018-01-16

申请号：US15129258

申请日：2014-03-28

申请人： PIONEER CORPORATION ,  Tohoku Pioneer Corporation ,  ANDEN CO., LTD.

发明人： Kazuaki Watanabe ,  Junichi Sato ,  Susumu Miyata ,  Makoto Tsuruta

IPC分类号： H04R9/04 ,  B60Q5/00 ,  H04R9/06

CPC分类号： B60Q5/008 ,  H04R9/045 ,  H04R9/046 ,  H04R9/06 ,  H04R2499/13

摘要： This approaching vehicle notification sound speaker device is equipped with a voice coil for conducting an electrical signal, a cylindrical voice coil bobbin on which the voice coil is wound, an insulating sheet, and a cap. The sheet is wound on the voice coil bobbin at a position closer to the sound-emitting side than the voice coil, the cap is disposed closer to the sound-emitting side than the voice coil bobbin, the voice coil bobbin and the cap are made of an aluminum-containing material, and the sheet is formed with the inclusion of an aramid-based nonwoven fabric.

公开(公告)号：US10231042B2

公开(公告)日：2019-03-12

申请号：US15542542

申请日：2015-01-09

申请人： PIONEER CORPORATION ,  TOHOKU PIONEER CORPORATION

发明人： Kazuaki Watanabe ,  Junichi Sato ,  Susumu Miyata ,  Makoto Tsuruta

IPC分类号： H04R11/02 ,  H04R9/06 ,  H04R1/02 ,  H04R7/12 ,  H04R7/18 ,  B60Q5/00 ,  H04R9/02

摘要： Provided is a speaker device in which reproduction sound pressure is increased, and heat resistance and water resistance are improved. The speaker device includes: a diaphragm formed of a film containing polyimide; and a frame for supporting the diaphragm. A cross-section passing the center of the diaphragm and parallel to a sound emission direction includes sequentially from an inner periphery to an outer periphery of the diaphragm along the sound emission direction: a first bent plate portion having a concave arc; a second bent plate portion having a convex arc; a third bent plate portion having a concave arc; and a fourth bent plate portion having a convex arc. An area of the first bent plate portion is larger than any of areas of the second, the third, the fourth bent plate portions.