JPS6228294U - - Google Patents

Info

Publication number
JPS6228294U
JPS6228294U JP11821385U JP11821385U JPS6228294U JP S6228294 U JPS6228294 U JP S6228294U JP 11821385 U JP11821385 U JP 11821385U JP 11821385 U JP11821385 U JP 11821385U JP S6228294 U JPS6228294 U JP S6228294U
Authority
JP
Japan
Prior art keywords
light
filter
type smoke
light receiver
attenuation
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
JP11821385U
Other languages
English (en)
Other versions
JPH044318Y2 (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 JP1985118213U priority Critical patent/JPH044318Y2/ja
Publication of JPS6228294U publication Critical patent/JPS6228294U/ja
Application granted granted Critical
Publication of JPH044318Y2 publication Critical patent/JPH044318Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Fire-Detection Mechanisms (AREA)

Description

【図面の簡単な説明】
第１図は本考案の一実施例を示す側面図、第２
図はフイルタの斜視図である。 １……投光器、２……受光器、４……発光素子
、６……受光素子、８……フイルタ、９……フイ
ルタ８の駆動装置。

Claims (1)

  1. 【実用新案登録請求の範囲】 １ 投光器と受光器とが対向して配置され、投光
    器から受光器に向けて常時放射される光がその光
    路に進入する煙により遮断されてその光量が減少
    したことを受光器によつて検出し、その減光率が
    所定値に達したときに作動する減光式煙感知器の
    試験装置において、それぞれ減光率の異なるもの
    が順次に配列されて帯状に形成されたフイルタが
    、遠隔制御により作動し上記フイルタを巻き上げ
    てその減光率を順次に切り替える駆動装置ととも
    に、上記光路を遮断する位置に配置されて成るこ
    とを特徴とする減光式煙感知器の試験装置。 ２ フイルタおよびその駆動装置が、投光器に内
    蔵されていることを特徴とする実用新案登録請求
    の範囲第１項記載の減光式煙感知器の試験装置。 ３ フイルタおよびその駆動装置が、受光器に内
    蔵されていることを特徴とする実用新案登録請求
    の範囲第１項記載の減光式煙感知器の試験装置。
JP1985118213U 1985-08-02 1985-08-02 Expired JPH044318Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1985118213U JPH044318Y2 (ja) 1985-08-02 1985-08-02

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1985118213U JPH044318Y2 (ja) 1985-08-02 1985-08-02

Publications (2)

Publication Number Publication Date
JPS6228294U true JPS6228294U (ja) 1987-02-20
JPH044318Y2 JPH044318Y2 (ja) 1992-02-07

Family

ID=31004455

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1985118213U Expired JPH044318Y2 (ja) 1985-08-02 1985-08-02

Country Status (1)

Country Link
JP (1) JPH044318Y2 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0365570U (ja) * 1989-10-30 1991-06-26
JP2013073591A (ja) * 2011-09-29 2013-04-22 Nohmi Bosai Ltd 光電式分離型煙感知器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52133768A (en) * 1976-04-30 1977-11-09 Mitsubishi Electric Corp Light wmi ssion quantity control type photo coupler
JPS53113587A (en) * 1977-03-14 1978-10-04 Nec Corp Operation testing method of smoke detector
JPS56135149U (ja) * 1980-03-14 1981-10-13

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52133768A (en) * 1976-04-30 1977-11-09 Mitsubishi Electric Corp Light wmi ssion quantity control type photo coupler
JPS53113587A (en) * 1977-03-14 1978-10-04 Nec Corp Operation testing method of smoke detector
JPS56135149U (ja) * 1980-03-14 1981-10-13

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0365570U (ja) * 1989-10-30 1991-06-26
JP2013073591A (ja) * 2011-09-29 2013-04-22 Nohmi Bosai Ltd 光電式分離型煙感知器

Also Published As

Publication number Publication date
JPH044318Y2 (ja) 1992-02-07

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