Title:
VEHICLE-MOUNTED WOOFER DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/241154
Kind Code:
A1
Abstract:
The present invention comprises: a magnetic circuit 22; a vibration plate 21 connected to the magnetic circuit 22; a speaker unit 20 in which the magnetic circuit 22 is electrically driven, whereby the vibration plate 21 is caused to vibrate so that it is possible to generate sound waves; a Helmholtz resonator on the side toward which a first surface of the vibration plate 21 is oriented, the Helmholtz resonator being connected to the speaker unit 20; a sealed container for constituting a sealed space 51 on the side toward which a second surface of the vibration plate, which is the reverse of the first surface, is oriented, the sealed space 51 being connected to the speaker unit 20; and a tubular part 18 passing through the Helmholtz resonator, the speaker unit 20, and the sealed container.
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Inventors:
TABATA TAKAYUKI (JP)
Application Number:
PCT/JP2020/018032
Publication Date:
December 03, 2020
Filing Date:
April 27, 2020
Export Citation:
Assignee:
FOSTER ELECTRIC CO LTD (JP)
International Classes:
B60R11/02; H04R1/02
Domestic Patent References:
WO2011052080A1 | 2011-05-05 | |||
WO2013005578A1 | 2013-01-10 |
Foreign References:
JP2013509049A | 2013-03-07 | |||
JP2012503940A | 2012-02-09 | |||
JPH07137581A | 1995-05-30 |
Attorney, Agent or Firm:
MAEKAWA Naoki et al. (JP)
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