Speaker apparatus
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United States of America Patent
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Apr 1, 2008
Grant Date -
Jul 28, 2005
app pub date -
Oct 29, 2004
filing date -
Nov 12, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention provides a speaker apparatus which has a simple structure and a high directivity and which can emit sound. The speaker apparatus includes a hood having an opening at a front end with a sound reflecting inner wall shaped like a rotating surface and provided at least on the opening side, the sound reflecting inner wall having a focus behind the opening, the hood being formed with an internal space, and a sound processing section having a vibrating surface and a sound emitting circuit both provided in the hood, the sound emitting circuit vibrating the vibrating surface. Consequently, the diameter of the vibrating surface of the sound processing section, which diameter determines the spread, outside the hood, of a sound emitted by the speaker apparatus, can be considered to be larger than its actual dimension.
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