JPH039097U - - Google Patents

Info

Publication number
JPH039097U
JPH039097U JP6941189U JP6941189U JPH039097U JP H039097 U JPH039097 U JP H039097U JP 6941189 U JP6941189 U JP 6941189U JP 6941189 U JP6941189 U JP 6941189U JP H039097 U JPH039097 U JP H039097U
Authority
JP
Japan
Prior art keywords
light receiving
integrated
circuit
smoke detector
integrated circuit
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
JP6941189U
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 JP6941189U priority Critical patent/JPH039097U/ja
Publication of JPH039097U publication Critical patent/JPH039097U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Fire-Detection Mechanisms (AREA)

Description

【図面の簡単な説明】
第１図は本考案の実施例の回路図、第２図ａ，
ｂは同上の回路の素子を実装したプリント基板の
拡大上面図、側面図、第３図ａ〜ｂは同上のプリ
ント基板にホルダーを実装した状態の上面図、正
面図、背面図、側面断面図、第４図は同上の全体
の一部破断した側面図、第５図は従来例の説明用
概略構成図である。 １……集積回路、６……プリント基板、７……
金属板、２……受光素子、３……発光素子、８…
…ホルダー、９……金属板である。

Claims (1)

  1. 【実用新案登録請求の範囲】 (1) 煙によつて散乱した発光部からの光を受光
    増幅して該増幅された出力が予め定めた値以上に
    なると感知信号を出力する光電式煙感知器におい
    て電気的ノイズに弱い受光部及び信号増幅器の集
    積可能な回路部位を集積回路で構成するとともに
    該集積不可能で上記受光部及び増幅部に付加され
    る回路部品を集積回路周辺に配置して上記集積回
    路及び回路部品をシールド用の金属板で覆つたこ
    とを特徴とする光電式煙感知器。 (2) 受光部の受光素子を別のシールド用の金属
    板で覆つたことを特徴とする請求項１記載の光電
    式煙感知器。
JP6941189U 1989-06-14 1989-06-14 Pending JPH039097U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6941189U JPH039097U (ja) 1989-06-14 1989-06-14

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6941189U JPH039097U (ja) 1989-06-14 1989-06-14

Publications (1)

Publication Number Publication Date
JPH039097U true JPH039097U (ja) 1991-01-29

Family

ID=31604690

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6941189U Pending JPH039097U (ja) 1989-06-14 1989-06-14

Country Status (1)

Country Link
JP (1) JPH039097U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5117952U (ja) * 1974-07-25 1976-02-09

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5117952U (ja) * 1974-07-25 1976-02-09

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