JPS5385480A - Smoke detector - Google Patents

Smoke detector

Info

Publication number
JPS5385480A
JPS5385480A JP15967876A JP15967876A JPS5385480A JP S5385480 A JPS5385480 A JP S5385480A JP 15967876 A JP15967876 A JP 15967876A JP 15967876 A JP15967876 A JP 15967876A JP S5385480 A JPS5385480 A JP S5385480A
Authority
JP
Japan
Prior art keywords
smoke detector
malfunction
temperature sensing
improved fire
sensing members
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
JP15967876A
Other languages
Japanese (ja)
Inventor
Shigeto Harano
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 JP15967876A priority Critical patent/JPS5385480A/en
Publication of JPS5385480A publication Critical patent/JPS5385480A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

PURPOSE:To provide a smoke detector of improved fire detecting capacity free from malfunction by optically detecting the differential displacements of temperature sensing members of varying thermal capacities.
JP15967876A 1976-12-30 1976-12-30 Smoke detector Pending JPS5385480A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15967876A JPS5385480A (en) 1976-12-30 1976-12-30 Smoke detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15967876A JPS5385480A (en) 1976-12-30 1976-12-30 Smoke detector

Publications (1)

Publication Number Publication Date
JPS5385480A true JPS5385480A (en) 1978-07-27

Family

ID=15698929

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15967876A Pending JPS5385480A (en) 1976-12-30 1976-12-30 Smoke detector

Country Status (1)

Country Link
JP (1) JPS5385480A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01259495A (en) * 1988-04-08 1989-10-17 Matsushita Electric Works Ltd Photo-electric type smoke sensor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01259495A (en) * 1988-04-08 1989-10-17 Matsushita Electric Works Ltd Photo-electric type smoke sensor

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