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11. 发明专利

JP4061242B2 Microphone device 有权
公开(公告)号：JP4061242B2
公开(公告)日：2008-03-12
申请号：JP2003135869
申请日：2003-05-14
申请人：三菱電機株式会社 , 平大利光 , 五郎山内
发明人：平大利光 , 五郎山内 , 四郎山内 , 秀木村
IPC分类号： H04R19/04

12. 发明专利

JP2004343318A Microphone device 有权
公开(公告)号：JP2004343318A
公开(公告)日：2004-12-02
申请号：JP2003135869
申请日：2003-05-14
申请人： Mitsubishi Electric Corp , Hirahiro Toshimitsu , Goro Yamauchi , 三菱電機株式会社 , 平大利光 , 五郎山内
发明人： YAMAUCHI SHIRO , KIMURA HIDE , TOSHIMITSU HIRAHIRO , YAMAUCHI GORO
IPC分类号： H04R19/04
摘要： PROBLEM TO BE SOLVED: To provide a microphone device whose maintenance work is easy as to the microphone device in which moisture resistance is requested like that for noise measurement, which is used outdoors.
SOLUTION: The microphone device stored in a container 1 is provided with a dehumidification element 7 which has porous electrodes on respective faces of a solid electrolyte film having hydrogen ion conductivity and is arranged between the inner part and the outer part of the container 1, a DC power source 17 supplying a DC current to the dehumidification element 7, a humidity detection means 15 detecting humidity in the container 1, a reversible moisture absorption member 18 which is arranged in the container 1 and absorbs and discharges moisture, and a dehumidification control means 16 applying a DC voltage to the the dehumidification element 7 from the DC power source 17 when humidity in the container 1 detected by the humidity detection means 15 reaches a humidity setting value, and removing moisture in the container 1 and the reversible moisture absorption member 18. When humidity in the container detected by the humidity detection means 15 reaches the humidity setting value, the dehumidification control means 16 applies a DC voltage to the dehumidification element 7 from the DC power source. Consequently, maintenance work becomes easy and the inner part of the container can be kept in prescribed humidity since moisture in the container and a reversible moisture absorption member is removed.
COPYRIGHT: (C)2005,JPO&NCIPI

13. 发明专利

JP3563647B2 Complex type earphone 有权
公开(公告)号：JP3563647B2
公开(公告)日：2004-09-08
申请号：JP26546899
申请日：1999-09-20
申请人：平大利光 , 松下電器産業株式会社
发明人：平大利光 , 功修安野
IPC分类号： H04R17/00 , H04R1/10 , H04R19/02

14. 发明专利

JP2004166262A Electroacoustic transducer and manufacturing method thereof 审中-公开
标题翻译：电动传感器及其制造方法
公开(公告)号：JP2004166262A
公开(公告)日：2004-06-10
申请号：JP2003362885
申请日：2003-10-23
申请人： Matsushita Electric Ind Co Ltd , Hirahiro Toshimitsu , 平大利光 , 松下電器産業株式会社
发明人： YASUNO ISANAGA , TOSHIMITSU HIRAHIRO
IPC分类号： H04R19/01
CPC分类号： H01G7/02
摘要： PROBLEM TO BE SOLVED: To provide an electroacoustic transducer whose performance is stabilized without causingg a trouble that internal charges are lost, even under the condition of severe environments with dust, temperature and humidity or even when a component is carelessly touched after or during assembly. SOLUTION: On a first dielectric film 61 for internally forming an electret layer E1 on a fixed electrode 7, a second dielectric film 62 is formed as a coating layer to prevent discharging from the electret layer E1 within the first dielectric film 61 to the outside. COPYRIGHT: (C)2004,JPO

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