Title:
SPEAKER UNIT
Document Type and Number:
WIPO Patent Application WO/2021/085392
Kind Code:
A1
Abstract:
A speaker unit (10, 10A, 10B) that has a housing (400), a lower substrate (210) that is fixed to the housing, a plurality of first ultrasonic vibrators (201) that are arranged on the lower substrate, an upper substrate (110) that is fixed to the housing and has a plurality of openings (OA) formed therein at locations that correspond to the first ultrasonic vibrators, and a plurality of second ultrasonic vibrators (101) that are arranged on the upper substrate.
Inventors:
FURUHIRA AKIHIRO (JP)
Application Number:
PCT/JP2020/040147
Publication Date:
May 06, 2021
Filing Date:
October 26, 2020
Export Citation:
Assignee:
AFUR CO LTD (JP)
International Classes:
H04R1/00; H04R1/02
Foreign References:
| JP2003047085A | 2003-02-14 | |||
| JP2012029103A | 2012-02-09 | |||
| JP2019176350A | 2019-10-10 | |||
| JP2017204661A | 2017-11-16 | |||
| KR200462890Y1 | 2012-10-09 |
Attorney, Agent or Firm:
ASAHI PATENT FIRM (JP)
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