PIEZOELECTRIC TYPE ELECTRO-ACOUSTIC TRANSDUCER AND ELECTRONIC APPARATUS

• Main Authors: SUGII DAISUKE, ONISHI YASUHARU, KOMODA MOTOYOSHI, KURODA ATSUSHI
• Format: Patent
• Language: English; Japanese
• Published: 08.12.2014
• Subjects: DEAF-AID SETS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS; PUBLIC ADDRESS SYSTEMS

PROBLEM TO BE SOLVED: To provide a piezoelectric type electro-acoustic transducer which inhibits sound pressure attenuation caused by pressure air loss and interference of sound waves radiated from a rear surface of a piezoelectric actuator, and to provide an electronic apparatus.SOLUTION: A piezoelectric type electro-acoustic transducer includes: a housing 10 having multiple sound holes 11, 12, 13, 14; and multiple piezoelectric actuators 20, 21, 22, 23 which are disposed in the housing 10 so that vibrations surfaces 20a, 21a, 22a, 23a are arranged perpendicular to a main surface 10a of the housing 10 and supported by the housing 10 at end parts. The multiple actuators 20, 21, 22, 23 are arranged in parallel with each other at predetermined intervals. 【課題】圧空気圧損による音圧減衰と、圧電アクチュエータの裏面から放射された音波の干渉とを抑制できる電型電気音響変換器及び電子機器を提供すること。【解決手段】複数の音孔１１、１２、１３、１４を有する筐体１０と、前記筐体１０の主面１０ａに対して振動面２０ａ、２１ａ、２２ａ、２３ａが垂直となるように前記筐体１０内に配置されるとともに、端部にて前記筐体１０に支持される複数の圧電アクチュエータ２０、２１、２２、２３と、を備え、前記複数の圧電アクチュエータ２０、２１、２２、２３は、所定の間隔をおいて並列に配置される。【選択図】図１