JPS5329697A - Scattering light system smoke detector - Google Patents

Scattering light system smoke detector

Info

Publication number
JPS5329697A
JPS5329697A JP10445876A JP10445876A JPS5329697A JP S5329697 A JPS5329697 A JP S5329697A JP 10445876 A JP10445876 A JP 10445876A JP 10445876 A JP10445876 A JP 10445876A JP S5329697 A JPS5329697 A JP S5329697A
Authority
JP
Japan
Prior art keywords
light
smoke detector
light system
scattering light
system smoke
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
JP10445876A
Other languages
Japanese (ja)
Other versions
JPS5830639B2 (en
Inventor
Yoshihiko Okuda
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 JP10445876A priority Critical patent/JPS5830639B2/en
Publication of JPS5329697A publication Critical patent/JPS5329697A/en
Publication of JPS5830639B2 publication Critical patent/JPS5830639B2/en
Expired legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: The stray light within a smoke detecting chamber is considerably suppressed and an S/N ratio is increased by preventing the incidence of (L) times reflection of the direct light from a light reflecting elment on the opposing wall surface to which said light falls to the light receiving element after reflecting twice on the opposing wall surface which can be glanced over from the light receiving element, by means of light shield plates.
COPYRIGHT: (C)1978,JPO&Japio
JP10445876A 1976-08-31 1976-08-31 Scattered light smoke detector Expired JPS5830639B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10445876A JPS5830639B2 (en) 1976-08-31 1976-08-31 Scattered light smoke detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10445876A JPS5830639B2 (en) 1976-08-31 1976-08-31 Scattered light smoke detector

Publications (2)

Publication Number Publication Date
JPS5329697A true JPS5329697A (en) 1978-03-20
JPS5830639B2 JPS5830639B2 (en) 1983-06-30

Family

ID=14381150

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10445876A Expired JPS5830639B2 (en) 1976-08-31 1976-08-31 Scattered light smoke detector

Country Status (1)

Country Link
JP (1) JPS5830639B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5659867A (en) * 1979-10-22 1981-05-23 Nippon Doro Kk Paving material
JPH0432061U (en) * 1990-07-13 1992-03-16

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5659867A (en) * 1979-10-22 1981-05-23 Nippon Doro Kk Paving material
JPH0432061U (en) * 1990-07-13 1992-03-16

Also Published As

Publication number Publication date
JPS5830639B2 (en) 1983-06-30

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