Title:
超音波放射装置
Document Type and Number:
Japanese Patent JP7342323
Kind Code:
B2
Abstract:
To provide a speaker device capable of emitting ultrasonic waves both in lateral and upward directions using a single speaker and a method of controlling acoustic directivity.SOLUTION: A speaker device 1 includes a speaker 3 for radiating an ultrasonic component to the surroundings and a reflection unit 4, disposed facing a radiation surface of the speaker, for reflecting upward part of the ultrasonic component radiated by the speaker.SELECTED DRAWING: Figure 1
Inventors:
Yukio Matsuo
Application Number:
JP2019096504A
Publication Date:
September 12, 2023
Filing Date:
May 23, 2019
Export Citation:
Assignee:
Tohoku Gakuin
International Classes:
H04R1/34; A01M29/18
Domestic Patent References:
| JP57051384U | ||||
| JP2017018024A | ||||
| JP48076152U | ||||
| JP1019179U | ||||
| JP4126601U |
Attorney, Agent or Firm:
Takuma Sugiura
Masatomo Sugiura
Masatomo Sugiura