Title:
防犯装置および照明器具
Document Type and Number:
Japanese Patent JP4572565
Kind Code:
B2
Abstract:
To provide a crime prevention device which makes an alarm sound easy to hear even in the presence of ambient noise without making an output sound loud, and a luminaire.
When ambient lightness detected by a lightness sensor part 3 decreases below a specified threshold level, a control part 1 turns on a light source part 4 and when a person sensor part 2 detects a person staying in a detection area in this state, the control part outputs two sounds differing in frequency alternately from a sound output part 5 with nearly the same sound volume at specified time intervals for a specified time and also the light source part 4 is blinked in synchronism with frequency change of the output sounds.
COPYRIGHT: (C)2006,JPO&NCIPI
Inventors:
Ichiro Tanimura
Naoya Yamamoto
Atsushi Otsubo
Horiguchi Rei
Takuya Kitagawa
Yuki Uchida
Naoya Yamamoto
Atsushi Otsubo
Horiguchi Rei
Takuya Kitagawa
Yuki Uchida
Application Number:
JP2004112178A
Publication Date:
November 04, 2010
Filing Date:
April 06, 2004
Export Citation:
Assignee:
Panasonic Electric Works Co., Ltd.
International Classes:
F21S8/08; G08B13/191; H05B37/02
Domestic Patent References:
| JP11154284A | ||||
| JP9147269A | ||||
| JP2000165488A | ||||
| JP7131268A | ||||
| JP2003208990A | ||||
| JP2002141176A | ||||
| JP2001184570A | ||||
| JP2005135264A | ||||
| JP5233981A |
Attorney, Agent or Firm:
Keisei Nishikawa