发明名称 |
Speaker apparatus |
摘要 |
An external magnetic-type speaker apparatus includes a magnetic circuit that is provided with a yoke having a center pole, ring-shaped magnet and plate. The magnetic circuit and the edge of a vibrating plate are attached to a support frame. Ventilation holes are formed in the side surface of the support frame for allowing air inside the apparatus to escape.
|
申请公布号 |
US6804366(B2) |
申请公布日期 |
2004.10.12 |
申请号 |
US20010002127 |
申请日期 |
2001.12.05 |
申请人 |
PIONEER CORPORATION;TOHOKU PIONEER CORPORATION |
发明人 |
TAKAHASHI OSAMU;KAIWA TAKESHI;ITO MASANORI |
分类号 |
H04R9/02;H04R7/12;H04R9/06;(IPC1-7):H04R25/00 |
主分类号 |
H04R9/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|