Title:
PIEZOELECTRIC SPEAKER AND ALARM APPARATUS USING THIS PIEZOELECTRIC SPEAKER
Document Type and Number:
WIPO Patent Application WO/2011/108441
Kind Code:
A1
Abstract:
Disclosed is a piezoelectric speaker, wherein sufficient sound pressure can be obtained throughout a broad range of frequency bands with a simple manufacturing process. The piezoelectric speaker (1) is provided with a piezoelectric vibrator (2), a thin-thickness member (3), an elastic body (4), and a support member (5). The piezoelectric vibrator (2) is provided with a piezoelectric body (21) that is comprised of a piezoelectric element, and a vibration plate (22) that vibrates with the deformation of the piezoelectric body (21). The thin-thickness member (3) is joined together with the vibration plate (22), and formed around the piezoelectric vibrator (2). The support member (5) is provided with a front-face side supporter (51) and a back-face side supporter (52). The front-face side supporter (51) and the back-face side supporter (52) have the positions thereof fixed in a state of being intermeshed with each other. The front-face side supporter (51) and the back-face side supporter (51) support the thin-thickness member (3), by sandwiching the outer circumference section of the thin-thickness member (3) at the place where both the supporters are intermeshed with each other when the positions thereof are fixed. The elastic body (4) is formed between the front-face side supporter (51) and the thin-thickness member (3).
Inventors:
KITADA, Kosaku (1048, Oaza-Kadoma, Kadoma-sh, Osaka 86, 〒5718686, JP)
北田 耕作 (〒86 大阪府門真市大字門真１０４８番地 パナソニック電工株式会社内 Osaka, 〒5718686, JP)
AKASAKA, Osamu (1048, Oaza-Kadoma, Kadoma-sh, Osaka 86, 〒5718686, JP)
赤坂 修 (〒86 大阪府門真市大字門真１０４８番地 パナソニック電工株式会社内 Osaka, 〒5718686, JP)
FUKUSHIMA, Minoru (1048, Oaza-Kadoma, Kadoma-sh, Osaka 86, 〒5718686, JP)
北田 耕作 (〒86 大阪府門真市大字門真１０４８番地 パナソニック電工株式会社内 Osaka, 〒5718686, JP)
AKASAKA, Osamu (1048, Oaza-Kadoma, Kadoma-sh, Osaka 86, 〒5718686, JP)
赤坂 修 (〒86 大阪府門真市大字門真１０４８番地 パナソニック電工株式会社内 Osaka, 〒5718686, JP)
FUKUSHIMA, Minoru (1048, Oaza-Kadoma, Kadoma-sh, Osaka 86, 〒5718686, JP)
Application Number:
JP2011/054187
Publication Date:
September 09, 2011
Filing Date:
February 24, 2011
Export Citation:
Assignee:
PANASONIC ELECTRIC WORKS CO., LTD. (1048, Oaza-Kadoma Kadoma-sh, Osaka 86, 〒5718686, JP)
パナソニック電工株式会社 (〒86 大阪府門真市大字門真１０４８番地 Osaka, 〒5718686, JP)
KITADA, Kosaku (1048, Oaza-Kadoma, Kadoma-sh, Osaka 86, 〒5718686, JP)
北田 耕作 (〒86 大阪府門真市大字門真１０４８番地 パナソニック電工株式会社内 Osaka, 〒5718686, JP)
AKASAKA, Osamu (1048, Oaza-Kadoma, Kadoma-sh, Osaka 86, 〒5718686, JP)
赤坂 修 (〒86 大阪府門真市大字門真１０４８番地 パナソニック電工株式会社内 Osaka, 〒5718686, JP)
パナソニック電工株式会社 (〒86 大阪府門真市大字門真１０４８番地 Osaka, 〒5718686, JP)
KITADA, Kosaku (1048, Oaza-Kadoma, Kadoma-sh, Osaka 86, 〒5718686, JP)
北田 耕作 (〒86 大阪府門真市大字門真１０４８番地 パナソニック電工株式会社内 Osaka, 〒5718686, JP)
AKASAKA, Osamu (1048, Oaza-Kadoma, Kadoma-sh, Osaka 86, 〒5718686, JP)
赤坂 修 (〒86 大阪府門真市大字門真１０４８番地 パナソニック電工株式会社内 Osaka, 〒5718686, JP)
International Classes:
H04R17/00; G08B17/00; G08B23/00; H04R7/18
Attorney, Agent or Firm:
NISHIKAWA, Yoshikiyo et al. (Hokuto Patent Attorneys Office, Umeda Square Bldg. 9F., 12-17, Umeda 1-chome, Kita-ku, Osaka-sh, Osaka 01, 〒5300001, JP)
Claims: