JPS545698A - Automatic fire alarm device - Google Patents

Automatic fire alarm device

Info

Publication number
JPS545698A
JPS545698A JP7234277A JP7234277A JPS545698A JP S545698 A JPS545698 A JP S545698A JP 7234277 A JP7234277 A JP 7234277A JP 7234277 A JP7234277 A JP 7234277A JP S545698 A JPS545698 A JP S545698A
Authority
JP
Japan
Prior art keywords
alarm device
fire alarm
automatic fire
piled
omit
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.)
Pending
Application number
JP7234277A
Other languages
Japanese (ja)
Inventor
Tsutomu Kondo
Kazuhisa Akiyama
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP7234277A priority Critical patent/JPS545698A/en
Publication of JPS545698A publication Critical patent/JPS545698A/en
Pending legal-status Critical Current

Links

Landscapes

  • Fire-Detection Mechanisms (AREA)
  • Alarm Systems (AREA)

Abstract

PURPOSE: To omit the extra signal transmission circuits and thus to reduce the cost by driving the electricity-sound converter via the audible frequency signal which piled on the detector circuit at the closing time of the sense contact.
COPYRIGHT: (C)1979,JPO&Japio
JP7234277A 1977-06-15 1977-06-15 Automatic fire alarm device Pending JPS545698A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7234277A JPS545698A (en) 1977-06-15 1977-06-15 Automatic fire alarm device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7234277A JPS545698A (en) 1977-06-15 1977-06-15 Automatic fire alarm device

Publications (1)

Publication Number Publication Date
JPS545698A true JPS545698A (en) 1979-01-17

Family

ID=13486518

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7234277A Pending JPS545698A (en) 1977-06-15 1977-06-15 Automatic fire alarm device

Country Status (1)

Country Link
JP (1) JPS545698A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63244198A (en) * 1987-03-31 1988-10-11 ニツタン株式会社 Alarm
JPH0375934U (en) * 1989-11-22 1991-07-30

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63244198A (en) * 1987-03-31 1988-10-11 ニツタン株式会社 Alarm
US4887072A (en) * 1987-03-31 1989-12-12 Nittan Company, Limited Alarm apparatus
JPH0375934U (en) * 1989-11-22 1991-07-30

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