JPS5978961U - Dimming smoke detector - Google Patents

Dimming smoke detector

Info

Publication number
JPS5978961U
JPS5978961U JP17294182U JP17294182U JPS5978961U JP S5978961 U JPS5978961 U JP S5978961U JP 17294182 U JP17294182 U JP 17294182U JP 17294182 U JP17294182 U JP 17294182U JP S5978961 U JPS5978961 U JP S5978961U
Authority
JP
Japan
Prior art keywords
light
smoke detector
receiver
emitter
dimming
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
JP17294182U
Other languages
Japanese (ja)
Inventor
長谷川　常雄
Original Assignee
沖電気防災株式会社
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 沖電気防災株式会社 filed Critical 沖電気防災株式会社
Priority to JP17294182U priority Critical patent/JPS5978961U/en
Publication of JPS5978961U publication Critical patent/JPS5978961U/en
Pending 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) [Summary] 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図及び第２図は本発明に係る実施例の構成の説明図
である。 Ｍ□〜Ｍ４．　ＭＰ、　ＭＬ・・・鏡体、Ｒ・・・受光
器、Ｓ・・・投光器、１・・・鏡体間隔、ｎ・・・螺線
回周段数。FIGS. 1 and 2 are explanatory diagrams of the configuration of an embodiment according to the present invention. M□～M4. MP, ML...mirror, R...receiver, S...emitter, 1...mirror spacing, n...number of spiral turns.

Claims (1)

【実用新案登録請求の範囲】 互に所要距離を隔てられた投光器と受光器とを備えこの
投光器の発射光量と受光器の入射光量との比から、投光
器と受光器との空間の煙の存在を感知する減光式煙感知
器であって、 この投光器と受光器間の光路を複数の鏡体により折返し
あるいは螺線状にし′て光学的光路長を確保し機構的間
隔を小さくしたことを特徴とする減光式煙感知器。[Scope of Claim for Utility Model Registration] A light emitter and a light receiver are separated from each other by a required distance. From the ratio of the amount of light emitted by the light emitter to the amount of light incident to the light receiver, it is determined that smoke exists in the space between the light emitter and the light receiver. This is a dimming-type smoke detector that detects smoke, and the optical path between the emitter and receiver is folded or spiraled using multiple mirrors to ensure the optical path length and reduce the mechanical distance. Features a dimming type smoke detector.
JP17294182U 1982-11-17 1982-11-17 Dimming smoke detector Pending JPS5978961U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17294182U JPS5978961U (en) 1982-11-17 1982-11-17 Dimming smoke detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17294182U JPS5978961U (en) 1982-11-17 1982-11-17 Dimming smoke detector

Publications (1)

Publication Number Publication Date
JPS5978961U true JPS5978961U (en) 1984-05-28

Family

ID=30376859

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17294182U Pending JPS5978961U (en) 1982-11-17 1982-11-17 Dimming smoke detector

Country Status (1)

Country Link
JP (1) JPS5978961U (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5318782U (en) * 1976-07-27 1978-02-17
JPS5548421U (en) * 1978-09-22 1980-03-29

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5318782U (en) * 1976-07-27 1978-02-17
JPS5548421U (en) * 1978-09-22 1980-03-29

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