JPS6237395U - - Google Patents

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Publication number
JPS6237395U
JPS6237395U JP12905985U JP12905985U JPS6237395U JP S6237395 U JPS6237395 U JP S6237395U JP 12905985 U JP12905985 U JP 12905985U JP 12905985 U JP12905985 U JP 12905985U JP S6237395 U JPS6237395 U JP S6237395U
Authority
JP
Japan
Prior art keywords
ion chamber
external ion
circuit board
printed circuit
reference element
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
JP12905985U
Other languages
Japanese (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 JP12905985U priority Critical patent/JPS6237395U/ja
Publication of JPS6237395U publication Critical patent/JPS6237395U/ja
Pending legal-status Critical Current

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  • Fire-Detection Mechanisms (AREA)

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の実施例を示す縦断面図、第２
図は、第１図のイオン化式煙感知器の回路図であ
る。 １……イオン化式煙感知器、２……内部イオン
室、３……外部イオン室、４……信号送出回路、
５……プリント基板、１７……シールドケース。 Fig. 1 is a vertical sectional view showing an embodiment of the present invention;
1 is a circuit diagram of the ionization type smoke detector of FIG. 1. FIG. 1... Ionization type smoke detector, 2... Internal ion chamber, 3... External ion chamber, 4... Signal sending circuit,
5...Printed circuit board, 17...shield case.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 内部イオン室などの基準素子と外部イオン室と
インピーダンス素子とが直列に接続され、検出回
路や信号送出回路などの回路部品が設けられたプ
リント基板を有する火災感知器において、煙を外
部イオン室へ流入させるための通気口を設けたシ
ールドケースによつて基準素子、外部イオン室、
プリント基板などを囲い、シールドケースを外部
イオン室に接続したことを特徴とするイオン化式
煙感知器。 In a fire detector that has a printed circuit board in which a reference element such as an internal ion chamber, an external ion chamber, and an impedance element are connected in series, and circuit components such as a detection circuit and a signal transmission circuit are installed, smoke is sent to the external ion chamber. The reference element, external ion chamber,
An ionization type smoke detector characterized by enclosing a printed circuit board, etc., and connecting a shield case to an external ion chamber.
JP12905985U 1985-08-24 1985-08-24 Pending JPS6237395U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12905985U JPS6237395U (en) 1985-08-24 1985-08-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12905985U JPS6237395U (en) 1985-08-24 1985-08-24

Publications (1)

Publication Number Publication Date
JPS6237395U true JPS6237395U (en) 1987-03-05

Family

ID=31025294

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12905985U Pending JPS6237395U (en) 1985-08-24 1985-08-24

Country Status (1)

Country Link
JP (1) JPS6237395U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6457592U (en) * 1987-10-05 1989-04-10

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5271998A (en) * 1975-12-08 1977-06-15 Patent Dev & Management Smoke sensitive fire alarm
JPS5538236B2 (en) * 1977-07-06 1980-10-02
JPS5694467A (en) * 1979-12-14 1981-07-30 Honeywell Inf Systems Automatic bill discharging system having purge control unit
JPS5947692A (en) * 1976-11-29 1984-03-17 ツエルベルス・アクチエン・ゲゼルシヤフト Ionization chamber for ionization type smoke detector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5271998A (en) * 1975-12-08 1977-06-15 Patent Dev & Management Smoke sensitive fire alarm
JPS5947692A (en) * 1976-11-29 1984-03-17 ツエルベルス・アクチエン・ゲゼルシヤフト Ionization chamber for ionization type smoke detector
JPS5538236B2 (en) * 1977-07-06 1980-10-02
JPS5694467A (en) * 1979-12-14 1981-07-30 Honeywell Inf Systems Automatic bill discharging system having purge control unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6457592U (en) * 1987-10-05 1989-04-10

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