Approaching vehicle warning speaker device
AssigneesPioneer Corporation, Tohoku Pioneer Corporation, Anden Co., Ltd.
InventorsKazuaki Watanabe, Junichi Sato, Susumu Miyata, Makoto Tsuruta
Life of this patent
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Abstract
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.
Claims14
An approaching vehicle warning speaker device comprising:
- a voice coil conducting an electric signal;
- a sleeve-shaped voice coil bobbin around which the voice coil is wound;
- an insulating sheet wrapped around the voice coil bobbin at a location further in a sound-emission side than the voice coil;
- a cap provided further in the sound-emission side than the voice coil bobbin;
- and
- a diaphragm configured to generate sound,
- wherein the voice coil bobbin and the cap are made of material containing aluminum,
- the sheet is formed of non-woven fabric containing aramid,
- the sheet and the diaphragm are joined to one another with an adhesive, and
- an annular member is directly joined to the voice coil bobbin at a location further in a side opposite the sound-emission side than the diaphragm.
Dependencies are inferred from the claim text.