JPS5351998A - Fire alarm unit - Google Patents

Fire alarm unit

Info

Publication number
JPS5351998A
JPS5351998A JP12695876A JP12695876A JPS5351998A JP S5351998 A JPS5351998 A JP S5351998A JP 12695876 A JP12695876 A JP 12695876A JP 12695876 A JP12695876 A JP 12695876A JP S5351998 A JPS5351998 A JP S5351998A
Authority
JP
Japan
Prior art keywords
alarm unit
fire alarm
fire
misalarm
alarming
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP12695876A
Other languages
Japanese (ja)
Other versions
JPS5931117B2 (en
Inventor
Miki Kobayashi
Kazuyoshi Tsubosaka
Kimio Nakamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP12695876A priority Critical patent/JPS5931117B2/en
Publication of JPS5351998A publication Critical patent/JPS5351998A/en
Publication of JPS5931117B2 publication Critical patent/JPS5931117B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

PURPOSE: To prevent the misalarm due to such as an open-air fire in a close distance, and to detect the fire over entirely broad district, by only alarming if an object in high temperature and having a large area is detected.
COPYRIGHT: (C)1978,JPO&Japio
JP12695876A 1976-10-21 1976-10-21 fire detection device Expired JPS5931117B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12695876A JPS5931117B2 (en) 1976-10-21 1976-10-21 fire detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12695876A JPS5931117B2 (en) 1976-10-21 1976-10-21 fire detection device

Publications (2)

Publication Number Publication Date
JPS5351998A true JPS5351998A (en) 1978-05-11
JPS5931117B2 JPS5931117B2 (en) 1984-07-31

Family

ID=14948097

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12695876A Expired JPS5931117B2 (en) 1976-10-21 1976-10-21 fire detection device

Country Status (1)

Country Link
JP (1) JPS5931117B2 (en)

Also Published As

Publication number Publication date
JPS5931117B2 (en) 1984-07-31

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