Title:
LOUDSPEAKER, ELECTRONIC APPARATUS USING LOUDSPEAKER, AND MOBILE BODY DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/092782
Kind Code:
A1
Abstract:
Disclosed is a loudspeaker that is provided with a lower plate, inner magnet, inner plate, outer magnetic section, frame, diaphragm, and voice coil. A cutout is formed in the inner plate such that the inner plate is smaller than the inner magnet when viewed from the upper surface of the inner plate. A holding section holding a magnetic fluid, and a gap section having a gap formed therein are disposed between the voice coil and the inner plate. The magnetic fluid is held in a part of the cutout.
Inventors:
KOBAYASHI YUICHI
MIYAZAKI MASAHIKO
MIYAZAKI MASAHIKO
Application Number:
PCT/JP2015/006006
Publication Date:
June 16, 2016
Filing Date:
December 03, 2015
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H04R9/02; H04R1/02
Domestic Patent References:
| WO2013114872A1 | 2013-08-08 | |||
| WO2014097632A1 | 2014-06-26 |
Foreign References:
| JP2008312056A | 2008-12-25 | |||
| JP2010258856A | 2010-11-11 | |||
| JP2009171279A | 2009-07-30 |
Attorney, Agent or Firm:
FUJII, Kentaro et al. (JP)
Fujii Kentaro (JP)
Fujii Kentaro (JP)
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