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1. (WO2018218681) SOUND-PRODUCING DEVICE AND SOUND-PRODUCING SEAT

Pub. No.:    WO/2018/218681    International Application No.:    PCT/CN2017/087045
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Sat Jun 03 01:59:59 CEST 2017
IPC: H04R 1/28
H04R 1/02
H04R 5/02
A47C 7/62
Applicants: CHEN, Jiansheng
陈坚胜
Inventors: CHEN, Jiansheng
陈坚胜
Title: SOUND-PRODUCING DEVICE AND SOUND-PRODUCING SEAT
Abstract:
A sound-producing device and a sound-producing seat. The sound-producing device comprises a loudspeaker (20), and a first sound cavity (30) and a second sound cavity (40) adjacent to each other but separated from each other, wherein the loudspeaker (20) is arranged at a position adjacent to the first sound cavity (30) and the second sound cavity (40); a front face of a vibration diaphragm of the loudspeaker (20) faces the first sound cavity (30), and a back face thereof faces the second sound cavity (40); at least one first sound hole (310) and at least one second sound hole (320) are arranged on a cavity wall of the first sound cavity (30), and at least one third sound hole (410) is arranged on a cavity wall of the second sound cavity (40); and the at least one first sound hole (310) or second sound hole (320) and the third sound hole (410) have different opening directions. An audio signal is transmitted to a certain area via the first sound hole (310) and the second sound hole (320), and the third sound hole (410) uses an acoustic short circuit principle to reduce audio signals in areas outside the area, thereby reducing the noise pollution affecting the outside world.