JPH01172190U - - Google Patents
Info
- Publication number
- JPH01172190U JPH01172190U JP6521188U JP6521188U JPH01172190U JP H01172190 U JPH01172190 U JP H01172190U JP 6521188 U JP6521188 U JP 6521188U JP 6521188 U JP6521188 U JP 6521188U JP H01172190 U JPH01172190 U JP H01172190U
- Authority
- JP
- Japan
- Prior art keywords
- fire
- detector
- cover
- protective window
- wiping body
- 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
Links
- 238000011109 contamination Methods 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims 2
- 238000001514 detection method Methods 0.000 claims 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Fire-Detection Mechanisms (AREA)
Description
第１図から第４図まではこの考案の実施例を示
し、第１図は考案装置の正面図、第２図は第１図
の一部を断面にした側面図、第３図と第４図はモ
ータ駆動回路の夫々の実施例を示す回路図、第５
図は従来の火災検知器の平面図である。
１……火災検知器、２……トンネル壁面、３，
１４……保護窓、３ａ……進行前面側、１１……
汚損防止装置、１２……検知器箱、１３，２８，
３３……ボルト、１５……検知器本体、１６，１
８……ビス、１７……前板、１９……鍔部、２０
……カバー、２１……ギヤ部、２２……回動手段
、２３……清拭体、２４……ガイドピニオン、２
５……駆動ピニオン、２６……モータ、２７……
ガイド、２９，３０……軸、３１……ブラシ本体
、３１ａ……基部、３２……ブラシ、３４……火
災警報装置、３５……電源装置、３６……タイマ
ー、３６ａ……限時接点、Ｃ……回転軸芯、Ｓ１
，Ｓ２……受光素子。
Figures 1 to 4 show examples of this invention, with Figure 1 being a front view of the device, Figure 2 being a side view with a part of Figure 1 in section, Figures 3 and 4. The figure is a circuit diagram showing each embodiment of the motor drive circuit.
The figure is a plan view of a conventional fire detector. 1...Fire detector, 2...Tunnel wall, 3,
14...Protection window, 3a...Progress front side, 11...
Contamination prevention device, 12...Detector box, 13, 28,
33... Bolt, 15... Detector body, 16,1
8...screw, 17...front plate, 19...flange, 20
... Cover, 21 ... Gear part, 22 ... Rotating means, 23 ... Cleaning body, 24 ... Guide pinion, 2
5... Drive pinion, 26... Motor, 27...
Guide, 29, 30... shaft, 31... brush body, 31a... base, 32... brush, 34... fire alarm device, 35... power supply device, 36... timer, 36a... time limit contact, C ...rotation axis, S 1
, S 2 ... Light receiving element.
Claims (1)
を、保護窓で覆われた１対の受光素子で検出して
火災を判断する火災検知器において、 火災検知器を収納する検知器箱に、保護窓を覆
う透光性のカバーと、このカバーを回動する回動
手段と、カバーの外面側に摺接すべく静止状態と
した清拭体とを設けている火災検知器の汚損防止
装置。 ２ 上記清拭体は、受光素子による検出ゾーンを
阻害しない位置に設けたことを特徴とする請求項
１記載の火災検知器の汚損防止装置。[Scope of Claim for Utility Model Registration] 1. In a fire detector that detects a fire by detecting the ratio of two specific wavelengths of radiant light emitted from a flame using a pair of light-receiving elements covered with a protective window, A detector box that houses the detector includes a translucent cover that covers the protective window, a rotating means for rotating the cover, and a wiping body that is in a stationary state so as to be in sliding contact with the outer surface of the cover. A device to prevent contamination of fire detectors installed. 2. The contamination prevention device for a fire detector according to claim 1, wherein the wiping body is provided at a position that does not obstruct the detection zone by the light receiving element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6521188U JPH01172190U (en) | 1988-05-19 | 1988-05-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6521188U JPH01172190U (en) | 1988-05-19 | 1988-05-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01172190U true JPH01172190U (en) | 1989-12-06 |
Family
ID=31290652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6521188U Pending JPH01172190U (en) | 1988-05-19 | 1988-05-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01172190U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5535610B2 (en) * | 1977-07-11 | 1980-09-16 | ||
| JPS6155788B2 (en) * | 1978-12-26 | 1986-11-29 | Matsushita Electric Ind Co Ltd |
-
1988
- 1988-05-19 JP JP6521188U patent/JPH01172190U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5535610B2 (en) * | 1977-07-11 | 1980-09-16 | ||
| JPS6155788B2 (en) * | 1978-12-26 | 1986-11-29 | Matsushita Electric Ind Co Ltd |
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