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1. WO2020110755 - ELECTROACOUSTIC TRANSDUCER

Publication Number WO/2020/110755
Publication Date 04.06.2020
International Application No. PCT/JP2019/044724
International Filing Date 14.11.2019
IPC
H04R 1/02 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers
02Casings; Cabinets; Mountings therein
H04R 1/10 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers
10Earpieces; Attachments therefor
H04R 1/28 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers
20Arrangements for obtaining desired frequency or directional characteristics
22for obtaining desired frequency characteristic only
28Transducer mountings or enclosures designed for specific frequency response; Transducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
H04R 17/00 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
17Piezo-electric transducers; Electrostrictive transducers
CPC
H04R 1/02
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers, ; loudspeakers or microphones
02Casings; Cabinets ; ; Supports therefor;; Mountings therein
H04R 1/10
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers, ; loudspeakers or microphones
10Earpieces; Attachments therefor ; ; Earphones; Monophonic headphones
H04R 1/28
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
1Details of transducers, ; loudspeakers or microphones
20Arrangements for obtaining desired frequency or directional characteristics
22for obtaining desired frequency characteristic only
28Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
H04R 17/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
17Piezo-electric transducers; Electrostrictive transducers
Applicants
  • ヤマハ株式会社 YAMAHA CORPORATION [JP]/[JP]
Inventors
  • 土橋 優 TSUCHIHASHI, Yu
  • 宮田 智矢 MIYATA, Tomoya
Agents
  • 特許業務法人中部国際特許事務所 CHUBU PATENT OFFICE
Priority Data
2018-22317829.11.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) ELECTROACOUSTIC TRANSDUCER
(FR) TRANSDUCTEUR ÉLECTROACOUSTIQUE
(JA) 電気音響変換器
Abstract
(EN)
The present invention makes it possible to effectively use sound waves emitted from both sides of a piezoelectric element used as a vibrating body in an electroacoustic transducer. Provided is an earphone 1A comprising a housing 10, a vibrating body 20 constituted by a piezoelectric element that is provided in the housing and has a porous membrane 22 and a pair of electrodes 24-1, 24-2 sandwiching the porous membrane, a partitioning wall 30 dividing the space inside the housing 10 into a first space 110-1 on the side of electrode 24-1 and a second space 110-2 on the side of electrode 24-2, a first tube 50-1 for causing a sound wave emission opening 60 that opens to the space outside the housing and the first space 110-1 to be in communication with each other, and a second tube 50-2 for causing the sound wave emission opening 60 and the second space 110-2 to be in communication with each other.
(FR)
La présente invention permet d'utiliser efficacement des ondes sonores émises à partir des deux côtés d'un élément piézoélectrique utilisé comme corps vibrant dans un transducteur électroacoustique. L'invention concerne un écouteur (1A) comprenant un boîtier (10), un corps vibrant (20) constitué d'un élément piézoélectrique qui est prévu dans le boîtier et a une membrane poreuse (22) et une paire d'électrodes (24-1, 24-2) prenant en sandwich la membrane poreuse, une paroi de séparation (30) divisant l'espace à l'intérieur du boîtier (10) en un premier espace (110-1) du côté de l'électrode (24-1) et un second espace (110-2) du côté de l'électrode (24-2), un premier tube (50-1) pour faire en sorte que l'ouverture (60) d'émission d'ondes sonores qui s'ouvre sur l'espace extérieur du boîtier et le premier espace (110-1) soient en communication l'un avec l'autre, et un second tube (50-2) pour faire en sorte que l'ouverture (60) d'émission d'ondes sonores et le second espace (110-2) soient en communication l'un avec l'autre.
(JA)
圧電素子を振動体として用いる電気音響変換器において、振動体の両面から放射される音波を有効に利用できるようにする。 筐体10と、該筐体内に設けられ、多孔質膜22と該多孔質膜22を挟む一対の電極24-1および24-2とを有する圧電素子で構成された振動体20と、筐体10の内側空間を電極24-1側の第1の空間110-1と電極24-2側の第2の空間110-2とに分離する隔壁30と、筐体の外側空間に開口する音波放射口60と第1の空間110-1とを連通させる第1の管50-1と、音波放射口60と第2の空間110-2とを連通させる第2の管50-2と、を備えたイヤホン1Aを提供する。
Also published as
Latest bibliographic data on file with the International Bureau