Title:
ACOUSTIC TRANSDUCER DEVICE AND SOUND OUTPUT APPARATUS
Document Type and Number:
WIPO Patent Application WO/2017/125976
Kind Code:
A1
Abstract:
[Problem] To provide: an acoustic transducer device which is a balanced armature type capable of improving acoustic pressure without involving upsizing; and a sound output apparatus. [Solution] A projection-type display device according to the present technology comprises a driving unit and a diaphragm unit. The diaphragm unit includes: a holding frame having an opening; a film attached to a film attachment surface, which is a surface of the holding frame, when covering the opening; a diaphragm held inside the holding frame when being attached to the film; and a transmission beam that transmits vibration of the diaphragm unit to the diaphragm. The film has a first film surface to which the film attachment surface and the diaphragm are attached, and a second film surface opposite to the first film surface. Between the film attachment surface and the diaphragm, the first film surface has a non-attachment region that is not attached to the holding frame but faces the holding frame in a direction perpendicular to a first plane on which the film attachment surface is disposed.
Inventors:
MIYAGAWA TAKEHIRO (JP)
NAGUMO TSUTOMU (JP)
NAGUMO TSUTOMU (JP)
Application Number:
PCT/JP2016/004965
Publication Date:
July 27, 2017
Filing Date:
November 25, 2016
Export Citation:
Assignee:
SONY CORP (JP)
International Classes:
H04R11/02
Foreign References:
| JP2012004851A | 2012-01-05 | |||
| JP2005123757A | 2005-05-12 | |||
| JPS5899099A | 1983-06-13 |
Attorney, Agent or Firm:
OMORI, Junichi (JP)
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