JPS5382199A - Scattered light type smoke detector - Google Patents

Scattered light type smoke detector

Info

Publication number
JPS5382199A
JPS5382199A JP15915976A JP15915976A JPS5382199A JP S5382199 A JPS5382199 A JP S5382199A JP 15915976 A JP15915976 A JP 15915976A JP 15915976 A JP15915976 A JP 15915976A JP S5382199 A JPS5382199 A JP S5382199A
Authority
JP
Japan
Prior art keywords
scattered light
smoke detector
light type
type smoke
dark box
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
JP15915976A
Other languages
Japanese (ja)
Inventor
Shigeto Harano
Tsunehiko Araki
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 JP15915976A priority Critical patent/JPS5382199A/en
Publication of JPS5382199A publication Critical patent/JPS5382199A/en
Pending legal-status Critical Current

Links

Landscapes

  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

PURPOSE: To reduce the quantity of radiation to a photo detector when no smoke exists in a dark box and enhance the stability and reliability of operation by providing recurrent reflection layers on the surface of the air permeable dark box.
COPYRIGHT: (C)1978,JPO&Japio
JP15915976A 1976-12-27 1976-12-27 Scattered light type smoke detector Pending JPS5382199A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15915976A JPS5382199A (en) 1976-12-27 1976-12-27 Scattered light type smoke detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15915976A JPS5382199A (en) 1976-12-27 1976-12-27 Scattered light type smoke detector

Publications (1)

Publication Number Publication Date
JPS5382199A true JPS5382199A (en) 1978-07-20

Family

ID=15687546

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15915976A Pending JPS5382199A (en) 1976-12-27 1976-12-27 Scattered light type smoke detector

Country Status (1)

Country Link
JP (1) JPS5382199A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7167099B2 (en) 1999-12-08 2007-01-23 Gentex Corporation Compact particle sensor
JP2012145528A (en) * 2011-01-14 2012-08-02 Mitsubishi Electric Corp Resin type identification device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7167099B2 (en) 1999-12-08 2007-01-23 Gentex Corporation Compact particle sensor
JP2012145528A (en) * 2011-01-14 2012-08-02 Mitsubishi Electric Corp Resin type identification device

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