Title:
BURGLAR AND DISASTER PREVENTING SYSTEM
Document Type and Number:
Japanese Patent JP3524330
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a burglar and disaster prevention system which can be used as an emergency lamp even when the supply of a power source to a receiver is interrupted due to the disconnection of wiring between a receiver and a detector, power failure, or the disconnection of a power code or the like.
SOLUTION: When the report of an abnormal signal due to fire or gas leak or the like is received, earthquake occurs, the supply of a commercial power source is interrupted, or wiring between a receiver 11 and detectors 121, 122, 123,..., 12n is disconnected, white LED 15 are turned on with high luminance unless surrounding brightness is sufficient enough for safe refuge. Also, when any one of the detectors is operated, and the surrounding brightness is more than a constant level, the white LED of the alarming detector is turned on with luminance as a normal alarm display lamp, and when the surrounding brightness is less than a normal level, the white LED of the alarming detector is turned on with high luminance.
More Like This:
Inventors:
Ikegawa, Toshio
Application Number:
JP17156297A
Publication Date:
May 10, 2004
Filing Date:
June 27, 1997
Export Citation:
Assignee:
HOCHIKI CORP
International Classes:
G08B5/36; G08B19/00; G08B21/00; G08B21/10; G08B23/00; (IPC1-7): G08B23/00
Attorney, Agent or Firm:
鹿嶋 英實
Previous Patent: MANUFACTURE OF BELT-LIKE INTERMEDIATE TRANSFER BODY
Next Patent: MULTIPLE RECEPTACLE AND MULTI-FIBER ADAPTOR
Next Patent: MULTIPLE RECEPTACLE AND MULTI-FIBER ADAPTOR