JPS6146454U - photoelectric smoke detector - Google Patents

photoelectric smoke detector

Info

Publication number
JPS6146454U
JPS6146454U JP13058784U JP13058784U JPS6146454U JP S6146454 U JPS6146454 U JP S6146454U JP 13058784 U JP13058784 U JP 13058784U JP 13058784 U JP13058784 U JP 13058784U JP S6146454 U JPS6146454 U JP S6146454U
Authority
JP
Japan
Prior art keywords
light
projector
smoke detector
photoelectric smoke
optical axis
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
JP13058784U
Other languages
Japanese (ja)
Other versions
JPH0236111Y2 (en
Inventor
芳治 織岡
幹夫 望月
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.)
Nohmi Bosai Ltd
Original Assignee
Nohmi Bosai 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 Nohmi Bosai Ltd filed Critical Nohmi Bosai Ltd
Priority to JP13058784U priority Critical patent/JPS6146454U/en
Priority to DE8585110642T priority patent/DE3580817D1/en
Priority to AT85110642T priority patent/ATE58976T1/en
Priority to EP85110642A priority patent/EP0175940B1/en
Priority to CA000489719A priority patent/CA1254970A/en
Publication of JPS6146454U publication Critical patent/JPS6146454U/en
Application granted granted Critical
Publication of JPH0236111Y2 publication Critical patent/JPH0236111Y2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図ないし第３図はそれぞれこの考案の光電式煙感知
器の概略図で、ａは断面図、ｂはその横断面図、第４図
は特性曲線図である。 １・・・・・・投光器、２・・・・・・受光器、３・・
・・・・遮光板、４・・・・・・左側壁、５・・・・・
・右側壁、６・・・・・・前壁、７・・・・・・後壁、
８・・・・・・底壁、９・・・・・・天井壁。1 to 3 are schematic diagrams of the photoelectric smoke detector of this invention, in which a is a sectional view, b is a cross-sectional view thereof, and FIG. 4 is a characteristic curve diagram. 1... Emitter, 2... Receiver, 3...
... Light shielding plate, 4 ... Left wall, 5 ...
・Right side wall, 6... Front wall, 7... Back wall,
8...Bottom wall, 9...Ceiling wall.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 測定空間へ光を放射する投光器と測定空間へ煙が進入し
たことにより生ずる散乱光を検出する受光器とを備えた
光電式煙感知器において、上記空間を形成する暗室が、
投光器の前方に設けられ投光器よりの光が光軸に対して
所定角度で反射するような平面または曲面を備えた前壁
と、上記投光器よりの光軸にほぼ平行した左右側壁と、
投光器の後方に設けられ上記左右側壁よりの反射光が直
接受光器を照射しないような所定角度で反射する平面ま
たは曲面を備えた後壁とで構成され、上記壁面が光吸収
性のよい鏡状の面を備えていることを特徴とする光電式
煙感知器。In a photoelectric smoke detector equipped with a light projector that emits light into a measurement space and a light receiver that detects scattered light caused by smoke entering the measurement space, the dark room forming the space is
a front wall provided in front of the projector and having a flat or curved surface that reflects the light from the projector at a predetermined angle with respect to the optical axis; and left and right side walls substantially parallel to the optical axis from the projector;
A rear wall is provided at the rear of the projector and has a flat or curved surface that reflects light at a predetermined angle so that the light reflected from the left and right side walls does not directly illuminate the receiver, and the wall surface has a mirror-like shape with good light absorption. A photoelectric smoke detector characterized by comprising a surface.
JP13058784U 1984-08-23 1984-08-30 photoelectric smoke detector Granted JPS6146454U (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP13058784U JPS6146454U (en) 1984-08-30 1984-08-30 photoelectric smoke detector
DE8585110642T DE3580817D1 (en) 1984-08-23 1985-08-23 PHOTOELECTRIC SMOKE DETECTOR.
AT85110642T ATE58976T1 (en) 1984-08-23 1985-08-23 PHOTOELECTRIC SMOKE DETECTOR.
EP85110642A EP0175940B1 (en) 1984-08-23 1985-08-23 Photoelectric smoke detector
CA000489719A CA1254970A (en) 1984-08-30 1985-08-29 Photoelectric smoke detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13058784U JPS6146454U (en) 1984-08-30 1984-08-30 photoelectric smoke detector

Publications (2)

Publication Number Publication Date
JPS6146454U true JPS6146454U (en) 1986-03-28
JPH0236111Y2 JPH0236111Y2 (en) 1990-10-02

Family

ID=30689192

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13058784U Granted JPS6146454U (en) 1984-08-23 1984-08-30 photoelectric smoke detector

Country Status (1)

Country Link
JP (1) JPS6146454U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01110213A (en) * 1987-10-23 1989-04-26 Citizen Watch Co Ltd Sensor signal processor
JP2013088434A (en) * 2011-10-18 2013-05-13 Boeing Co:The Detection of airborne impurities

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5266486U (en) * 1975-11-12 1977-05-17

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5266486U (en) * 1975-11-12 1977-05-17

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01110213A (en) * 1987-10-23 1989-04-26 Citizen Watch Co Ltd Sensor signal processor
JP2013088434A (en) * 2011-10-18 2013-05-13 Boeing Co:The Detection of airborne impurities

Also Published As

Publication number Publication date
JPH0236111Y2 (en) 1990-10-02

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