Title:
気流スピーカ
Document Type and Number:
Japanese Patent JP4657225
Kind Code:
B2
Abstract:
To provide an air flow speaker which generates high grade voice.
The air flow speaker 1 concerning the present invention is provided with: an air flow generation means 2 for generating air flow; an air flow passage 3 through which the air flow generated by the air flow generation means 2 passes and a passage cross section changing means 4 for changing cross section of the air flow passage 3. Then, an ultrasonic motor 10 is used as a driving source of the passage cross section changing means 4 and the ultrasonic motor 10 is controlled based on a voice signal.
COPYRIGHT: (C)2008,JPO&INPIT
Inventors:
Hirokazu Negishi
Tohro Oga
Kazuaki Maeda
Tohro Oga
Kazuaki Maeda
Application Number:
JP2007015352A
Publication Date:
March 23, 2011
Filing Date:
January 25, 2007
Export Citation:
Assignee:
TOA Co., Ltd.
International Classes:
H04R23/00
Domestic Patent References:
| JP62062700A | ||||
| JP62093898U |
Attorney, Agent or Firm:
Patent business corporation Yuko patent office