JPH0292594U - - Google Patents

Info

Publication number
JPH0292594U
JPH0292594U JP17131188U JP17131188U JPH0292594U JP H0292594 U JPH0292594 U JP H0292594U JP 17131188 U JP17131188 U JP 17131188U JP 17131188 U JP17131188 U JP 17131188U JP H0292594 U JPH0292594 U JP H0292594U
Authority
JP
Japan
Prior art keywords
electrode
external
internal electrode
circuit board
printed 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
JP17131188U
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 JP17131188U priority Critical patent/JPH0292594U/ja
Publication of JPH0292594U publication Critical patent/JPH0292594U/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 the drawing]

第1図は本考案の一実施例を示した実施例構成
図;第2図は本考案で用いる中間電極の説明図;
第3図は第2図の側面図;第4図は第1図の組立
分解図;第5図は従来の電極構造の説明図;第6
図は従来の中間電極説明図である。 1……内部電極、1a……電極本体、1b……
放射線源、1c……電極カバー、2……中間電極
、3……開口穴、4……電極片、5……外部電極
、6……絶縁体、7……突出部、11……本体カ
バー、12……煙流入口、13……外カバー、1
4……回路収納部、15……プリント基板、16
……シールドケース、17……リード端子、18
……嵌合端子、19……FET、20……コンデ
ンサ、21……コンデンサ収納部、22……フイ
ン、24……底板、25……防虫網。
Fig. 1 is an embodiment configuration diagram showing one embodiment of the present invention; Fig. 2 is an explanatory diagram of an intermediate electrode used in the present invention;
Figure 3 is a side view of Figure 2; Figure 4 is an exploded view of Figure 1; Figure 5 is an explanatory diagram of the conventional electrode structure;
The figure is an explanatory diagram of a conventional intermediate electrode. 1... Internal electrode, 1a... Electrode body, 1b...
Radiation source, 1c... Electrode cover, 2... Intermediate electrode, 3... Opening hole, 4... Electrode piece, 5... External electrode, 6... Insulator, 7... Projection, 11... Body cover , 12...Smoke inlet, 13...Outer cover, 1
4... Circuit storage section, 15... Printed circuit board, 16
...Shield case, 17...Lead terminal, 18
...Mating terminal, 19...FET, 20...Capacitor, 21...Capacitor storage section, 22...Fin, 24...Bottom plate, 25...Insect screen.

Claims (1)

【実用新案登録請求の範囲】 電気部品を実装したプリント基板と、該プリン
ト基板に電気接続され放射線源を備えた内部電極
と、該内部電極の外側に配置され該内部電極との
間に内部電離室を形成すると共に前記放射線源か
らの放射線を通過させる開口穴を備え更に該開口
穴の中心方向に向けて一片の電極片を延在した中
間電極と、該中間電極の外側に配置され該中間電
極との間に外部からの煙の流入が可能な外部電離
室を形成する外部電極と、前記内部電極、中間電
極及び外部電極のそれぞれを絶縁状態にて支持す
る絶縁体とを備えたイオン化式煙感知器に於いて
、 前記電極片先端と対峙する前記中間電極と外部
電極との間の位置に、前記絶縁体の一部を突出し
たことを特徴とするイオン化式煙感知器。
[Claims for Utility Model Registration] A printed circuit board with electrical components mounted thereon, an internal electrode electrically connected to the printed circuit board and equipped with a radiation source, and an internal electrode disposed outside of the internal electrode. an intermediate electrode that is provided with an opening hole that forms a chamber and allows radiation from the radiation source to pass therethrough, and further has a piece of electrode extending toward the center of the opening hole; An ionization type comprising an external electrode that forms an external ionization chamber between which smoke can flow in from the outside, and an insulator that supports each of the internal electrode, intermediate electrode, and external electrode in an insulating state. An ionization type smoke sensor, characterized in that a part of the insulator protrudes at a position between the intermediate electrode and the external electrode facing the tip of the electrode piece.
JP17131188U 1988-12-28 1988-12-28 Pending JPH0292594U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17131188U JPH0292594U (en) 1988-12-28 1988-12-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17131188U JPH0292594U (en) 1988-12-28 1988-12-28

Publications (1)

Publication Number Publication Date
JPH0292594U true JPH0292594U (en) 1990-07-23

Family

ID=31463031

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17131188U Pending JPH0292594U (en) 1988-12-28 1988-12-28

Country Status (1)

Country Link
JP (1) JPH0292594U (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6237394B2 (en) * 1983-03-28 1987-08-12 Ricoh Kk

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6237394B2 (en) * 1983-03-28 1987-08-12 Ricoh Kk

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