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Patent Searching and Data


Title:
SOUND-GENERATING DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/212698
Kind Code:
A1
Abstract:
[Problem] To provide a sound-generating device capable of accurately eliminating an atmospheric pressure difference between a sound generation space and a neighboring space which are demarcated so as to sandwich a vibrating plate therebetween inside a case. [Solution] A vibrating plate 11 and a vibration support sheet 12 which constitute a vibrating body 10 are mounted to a vibrating body attachment surface 5b of a frame 5. A sound generation space (i) above the vibrating plate 11 is connected to a sound generation channel 41a of a sound generation nozzle 41 via a sound generation port 4d, and a neighboring space (ii) below the vibrating plate 11 is connected to the sound generation channel 41a via a ventilation hole 7. Consequently, even if a large change in atmospheric pressure occurs inside the sound generation channel 41a, it is possible to prevent a large atmospheric pressure difference from being generated between the sound generation space (i) and the neighboring space (ii).

Inventors:
NUMATA, Taishi (1-7, Yukigaya-otsukamachi, Ota-k, Tokyo 01, 〒1458501, JP)
SATO, Kiyoshi (1-7, Yukigaya-otsukamachi, Ota-k, Tokyo 01, 〒1458501, JP)
AOKI, Daigo (1-7, Yukigaya-otsukamachi, Ota-k, Tokyo 01, 〒1458501, JP)
Application Number:
JP2017/007336
Publication Date:
December 14, 2017
Filing Date:
February 27, 2017
Export Citation:
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Assignee:
ALPS ELECTRIC CO., LTD. (1-7 Yukigaya-otsukamachi, Ota-ku Tokyo, 01, 〒1458501, JP)
International Classes:
H04R1/28; H04R11/02
Foreign References:
JPS4813441B11973-04-27
JP2001245398A2001-09-07
Attorney, Agent or Firm:
NOZAKI, Teruo (Oak Ikebukuro Building 3F, 1-21-11 Higashi-Ikebukuro Toshima-k, Tokyo 13, 〒1700013, JP)
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