Title:
CRIME PREVENTION BUZZER
Document Type and Number:
Japanese Patent JP2007264103
Kind Code:
A
Abstract:
To provide a crime prevention buzzer in which a whole size is reduced.
An air path 15 is provided between a resonant room 13 of a drum shape and a mouthpiece 14, and a buzzer section 12 is provided on an inner wall of the resonant room 13 of a whistle section 11 in which an aperture is provided on a border of the air path 15 and the resonant room 13. Vibration of the buzzer section 12 is transmitted to the resonant room 13 of the whistle section 11, and large warning sound is efficiently output by resonance, and thereby, the whole size of the crime prevention buzzer is reduced by reducing the size of the buzzer section 12.
COPYRIGHT: (C)2008,JPO&INPIT
Inventors:
OHARA TAKANORI
Application Number:
JP2006086171A
Publication Date:
October 11, 2007
Filing Date:
March 27, 2006
Export Citation:
Assignee:
SEASON TECH KK
International Classes:
G10K9/12; G08B15/00; G10K5/00; G10K9/122
Attorney, Agent or Firm:
Bunji Kamada
Torii Kazuhisa
Takayoshi Tagawa
Higashio Masahiro
Torii Kazuhisa
Takayoshi Tagawa
Higashio Masahiro
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