发明名称 |
Loudspeaker |
摘要 |
<p>A loudspeaker includes a diaphragm, an edge, and a voice coil. The diaphragm includes a groove having a concave cross section. Also, the diaphragm is in a horizontally or vertically elongated shape. The edge is coupled to an outer circumference of the diaphragm, and has a roughly half-round shaped cross section. The voice coil is bonded to the groove. The voice coil is thicker than a depth of the groove. Also, the voice coil has a cross section in which a dimension in a direction along a plane of the diaphragm is longer than a dimension in a direction perpendicular to the plane of the diaphragm. <IMAGE></p> |
申请公布号 |
EP1662838(B1) |
申请公布日期 |
2008.05.07 |
申请号 |
EP20060002706 |
申请日期 |
2004.08.10 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD |
发明人 |
TAKEWA, HIROYUKI;IWASA, MIKIO;INABA, ATSUSHI;KOURA, SATOSHI |
分类号 |
H04R9/02;H04R9/04;H04R1/00;H04R9/06 |
主分类号 |
H04R9/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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