JPS6292459U - - Google Patents

Info

Publication number
JPS6292459U
JPS6292459U JP17753886U JP17753886U JPS6292459U JP S6292459 U JPS6292459 U JP S6292459U JP 17753886 U JP17753886 U JP 17753886U JP 17753886 U JP17753886 U JP 17753886U JP S6292459 U JPS6292459 U JP S6292459U
Authority
JP
Japan
Prior art keywords
light
light beam
generates
light receiver
receiver
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
JP17753886U
Other languages
English (en)
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 JP17753886U priority Critical patent/JPS6292459U/ja
Publication of JPS6292459U publication Critical patent/JPS6292459U/ja
Pending legal-status Critical Current

Links

Landscapes

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

Description

【図面の簡単な説明】
第1図aは本考案の一実施例を示す平面図、同
図bはその側面図および接続図、第2図は本考案
の別の実施例を示す平面図および接続図、第3図
は本考案のもう一つ別の実施例を示す平面図であ
る。 図において、1……投光器、2……光ビーム、
3,4……反射板、5……散乱光受光器、6……
検出回路、7……直接光受光器、8……検出回路
、9……オア回路。

Claims (1)

    【実用新案登録請求の範囲】
  1. 光ビームを発生する単一の投光器と、前記光ビ
    ームを複数回反射させる反射板と、前記光ビーム
    の光路外に配設され、上記光ビームの少なくとも
    2本以上の光路中の煙によつて散乱された光を受
    光し、受光量に応じた信号を発生する散乱光受光
    器と、前記光ビームの光路中に前記投光器からの
    光ビームを受光して受光量に応じた信号を発生す
    る直接光受光器と、前記散乱光受光器の出力信号
    が一定値以上または直接光受光器の出力信号が一
    定値以下になると検出信号を出力する検出回路と
    を備えたことを特徴とする光電式煙感知器。
JP17753886U 1986-11-20 1986-11-20 Pending JPS6292459U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17753886U JPS6292459U (ja) 1986-11-20 1986-11-20

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17753886U JPS6292459U (ja) 1986-11-20 1986-11-20

Publications (1)

Publication Number Publication Date
JPS6292459U true JPS6292459U (ja) 1987-06-12

Family

ID=31118829

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17753886U Pending JPS6292459U (ja) 1986-11-20 1986-11-20

Country Status (1)

Country Link
JP (1) JPS6292459U (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0212399A (ja) * 1988-06-29 1990-01-17 Shimizu Corp クリーンルーム用複合型煙感知器
JP2006226727A (ja) * 2005-02-15 2006-08-31 Hamamatsu Photonics Kk 吸収計測装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5036799A (ja) * 1973-07-13 1975-04-07
JPS5251987A (en) * 1975-10-22 1977-04-26 Matsushita Electric Works Ltd Signal adding circuit in smoke detector
JPS5444582A (en) * 1977-09-14 1979-04-09 Matsushita Electric Ind Co Ltd Smoke detector

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5036799A (ja) * 1973-07-13 1975-04-07
JPS5251987A (en) * 1975-10-22 1977-04-26 Matsushita Electric Works Ltd Signal adding circuit in smoke detector
JPS5444582A (en) * 1977-09-14 1979-04-09 Matsushita Electric Ind Co Ltd Smoke detector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0212399A (ja) * 1988-06-29 1990-01-17 Shimizu Corp クリーンルーム用複合型煙感知器
JP2006226727A (ja) * 2005-02-15 2006-08-31 Hamamatsu Photonics Kk 吸収計測装置

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