JPH0374098U - - Google Patents

Info

Publication number
JPH0374098U
JPH0374098U JP13303189U JP13303189U JPH0374098U JP H0374098 U JPH0374098 U JP H0374098U JP 13303189 U JP13303189 U JP 13303189U JP 13303189 U JP13303189 U JP 13303189U JP H0374098 U JPH0374098 U JP H0374098U
Authority
JP
Japan
Prior art keywords
light
smoke
detection area
dark box
smoke detection
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
JP13303189U
Other languages
English (en)
Other versions
JPH0650075Y2 (ja
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 JP1989133031U priority Critical patent/JPH0650075Y2/ja
Publication of JPH0374098U publication Critical patent/JPH0374098U/ja
Application granted granted Critical
Publication of JPH0650075Y2 publication Critical patent/JPH0650075Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime 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図はこの考案の散乱光式煙感知器の一実施
例を示す縦断面図、第２図は第１図のＤ−Ｄ線断
面図である。 １……器体、２……暗箱、３，５……フレネル
レンズ、４……発光素子、６……受光素子、７…
…プリント基板。

Claims (1)

    【実用新案登録請求の範囲】
  1. 外気との流通が可能な暗箱と、該暗箱の煙検出
    領域に光線を放射する発光素子と、上記暗箱の煙
    検出領域に流入した煙による散乱光を検出する受
    光素子と、煙の流入方向に対し平行な上記暗箱の
    一側面に配置し、上記発光素子の光線が上記煙検
    出領域に照射するようにした発光用フレネルレン
    ズと、煙の流入方向に対し平行な上記暗箱の一側
    面に配置し、上記煙検出領域の煙による散乱光を
    上記受光素子に収束するようにした受光用フレネ
    ルレンズとを具備したことを特徴とする散乱光式
    煙感知器。
JP1989133031U 1989-11-17 1989-11-17 散乱光式煙感知器 Expired - Lifetime JPH0650075Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989133031U JPH0650075Y2 (ja) 1989-11-17 1989-11-17 散乱光式煙感知器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989133031U JPH0650075Y2 (ja) 1989-11-17 1989-11-17 散乱光式煙感知器

Publications (2)

Publication Number Publication Date
JPH0374098U true JPH0374098U (ja) 1991-07-25
JPH0650075Y2 JPH0650075Y2 (ja) 1994-12-14

Family

ID=31680451

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989133031U Expired - Lifetime JPH0650075Y2 (ja) 1989-11-17 1989-11-17 散乱光式煙感知器

Country Status (1)

Country Link
JP (1) JPH0650075Y2 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010040006A (ja) * 2008-08-08 2010-02-18 Sharp Corp 光電式煙センサおよび照明器具

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58117587U (ja) * 1982-02-04 1983-08-11 能美防災工業株式会社 散乱光式煙感知器

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58117587U (ja) * 1982-02-04 1983-08-11 能美防災工業株式会社 散乱光式煙感知器

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010040006A (ja) * 2008-08-08 2010-02-18 Sharp Corp 光電式煙センサおよび照明器具

Also Published As

Publication number Publication date
JPH0650075Y2 (ja) 1994-12-14

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