JPS61180390U - - Google Patents

Info

Publication number
JPS61180390U
JPS61180390U JP6165585U JP6165585U JPS61180390U JP S61180390 U JPS61180390 U JP S61180390U JP 6165585 U JP6165585 U JP 6165585U JP 6165585 U JP6165585 U JP 6165585U JP S61180390 U JPS61180390 U JP S61180390U
Authority
JP
Japan
Prior art keywords
ultrasonic
fire alarm
sound wave
waves
sound waves
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
JP6165585U
Other languages
English (en)
Japanese (ja)
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 filed Critical
Priority to JP6165585U priority Critical patent/JPS61180390U/ja
Publication of JPS61180390U publication Critical patent/JPS61180390U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Fire-Detection Mechanisms (AREA)
JP6165585U 1985-04-24 1985-04-24 Pending JPS61180390U (OSRAM)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6165585U JPS61180390U (OSRAM) 1985-04-24 1985-04-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6165585U JPS61180390U (OSRAM) 1985-04-24 1985-04-24

Publications (1)

Publication Number Publication Date
JPS61180390U true JPS61180390U (OSRAM) 1986-11-11

Family

ID=30590129

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6165585U Pending JPS61180390U (OSRAM) 1985-04-24 1985-04-24

Country Status (1)

Country Link
JP (1) JPS61180390U (OSRAM)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007132671A1 (ja) * 2006-05-12 2007-11-22 Panasonic Electric Works Co., Ltd. 音波式煙感知器
JP2008234021A (ja) * 2007-03-16 2008-10-02 Matsushita Electric Works Ltd 火災感知器
JP2008234020A (ja) * 2007-03-16 2008-10-02 Matsushita Electric Works Ltd 火災感知器
JP2008234018A (ja) * 2007-03-16 2008-10-02 Matsushita Electric Works Ltd 火災感知器
WO2009054359A1 (ja) * 2007-10-26 2009-04-30 Panasonic Electric Works Co., Ltd. 火災警報システム
JPWO2007132671A1 (ja) * 2006-05-12 2009-09-24 パナソニック電工株式会社 音波式煙感知器

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007132671A1 (ja) * 2006-05-12 2007-11-22 Panasonic Electric Works Co., Ltd. 音波式煙感知器
JPWO2007132671A1 (ja) * 2006-05-12 2009-09-24 パナソニック電工株式会社 音波式煙感知器
JP4826631B2 (ja) * 2006-05-12 2011-11-30 パナソニック電工株式会社 音波式煙感知器
US8253578B2 (en) 2006-05-12 2012-08-28 Panasonic Corporation Smoke sensor of the sound wave type including a smoke density estimation unit
JP2008234021A (ja) * 2007-03-16 2008-10-02 Matsushita Electric Works Ltd 火災感知器
JP2008234020A (ja) * 2007-03-16 2008-10-02 Matsushita Electric Works Ltd 火災感知器
JP2008234018A (ja) * 2007-03-16 2008-10-02 Matsushita Electric Works Ltd 火災感知器
WO2009054359A1 (ja) * 2007-10-26 2009-04-30 Panasonic Electric Works Co., Ltd. 火災警報システム
US8519854B2 (en) 2007-10-26 2013-08-27 Panasonic Corporation Fire alarm system

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