Title:
ACOUSTIC GENERATOR AND ELECTRONIC APPARATUS USING SAME
Document Type and Number:
WIPO Patent Application WO/2014/083902
Kind Code:
A1
Abstract:
[Problem] To provide an acoustic generator capable of generating sound of better sound quality, and an electronic apparatus in which same is used. [Solution] The acoustic generator has at least: an oscillation unit (10) which includes an exciter (1) which oscillates on input of an electrical signal, and a diaphragm which the exciter (1) is attached to and which oscillates together with the exciter (1); and shields (81a and 81b) which are spaced apart from the oscillation unit (10) and shield a portion of a first surface (61) from the external space, said first surface (61) being one main surface of the oscillation unit (10). In the acoustic generator, 0 < S1 < S2 is satisfied, where S1 is the area of a first portion (71a), which is an external-space-exposed portion of the first surface (61) of the oscillation unit (10), and S2 is the area of a second portion (71b), which is an external-space-exposed portion of a second surface (62), which is the other main surface of the oscillation unit (10).
Inventors:
TAKAHASHI TOORU (JP)
FUKUOKA SHUICHI (JP)
KUSHIMA NORIYUKI (JP)
HIRAYAMA TAKESHI (JP)
MAKINO YUTAKA (JP)
MURAHASHI MASATO (JP)
FUKUOKA SHUICHI (JP)
KUSHIMA NORIYUKI (JP)
HIRAYAMA TAKESHI (JP)
MAKINO YUTAKA (JP)
MURAHASHI MASATO (JP)
Application Number:
PCT/JP2013/073457
Publication Date:
June 05, 2014
Filing Date:
August 31, 2013
Export Citation:
Assignee:
KYOCERA CORP (JP)
International Classes:
H04R7/04; H04R3/00; H04R17/00
Domestic Patent References:
| WO2007026736A1 | 2007-03-08 | |||
| WO2011162002A1 | 2011-12-29 |
Foreign References:
| JPH09298798A | 1997-11-18 | |||
| JP2001103599A | 2001-04-13 | |||
| JP2008271559A | 2008-11-06 | |||
| JP2008199266A | 2008-08-28 |
Download PDF: