JPH01172189U - - Google Patents
Info
- Publication number
- JPH01172189U JPH01172189U JP6521088U JP6521088U JPH01172189U JP H01172189 U JPH01172189 U JP H01172189U JP 6521088 U JP6521088 U JP 6521088U JP 6521088 U JP6521088 U JP 6521088U JP H01172189 U JPH01172189 U JP H01172189U
- Authority
- JP
- Japan
- Prior art keywords
- detector
- fire
- cover
- fire detector
- reducing device
- 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.)
- Granted
Links
- 238000011109 contamination Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims 2
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Fire-Detection Mechanisms (AREA)
- Fire Alarms (AREA)
Description
第１図から第５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
図は他の実施例を示す一部を断面にした側面図、
第６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……
汚損軽減装置、１２……検知器箱、１３，２７…
…ボルト、１５……検知器本体、１６，１８……
ビス、１７……前板、１９……鍔部、２０……カ
バー、２１……ギヤ部、２２……回動手段、２３
……ガイドピニオン、２４……駆動ピニオン、２
５……モータ、２６……ガイド、２８，２９……
軸、３０……火災警報装置、３１……電源装置、
３２……タイマー、３２ａ……限時接点、３３…
…駆動ローラー、３４……ガイドローラー、３５
……ゴム材、Ｃ……回転軸芯、Ｓ１，Ｓ２……受
光素子。
Figures 1 to 5 show examples of this invention, with Figure 1 being a front view of the device, Figure 2 being a side view of Figure 1 partially cut away, Figures 3 and 4. The figure is a circuit diagram showing each embodiment of the motor drive circuit.
The figure is a partially sectional side view showing another embodiment.
FIG. 6 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 reduction device, 12...Detector box, 13, 27...
...Bolt, 15...Detector body, 16, 18...
Screw, 17... Front plate, 19... Flange, 20... Cover, 21... Gear part, 22... Rotating means, 23
... Guide pinion, 24 ... Drive pinion, 2
5...Motor, 26...Guide, 28, 29...
Axis, 30... Fire alarm device, 31... Power supply device,
32...Timer, 32a...Time-limited contact, 33...
... Drive roller, 34 ... Guide roller, 35
...Rubber material, C... Rotating shaft core, 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
手段とを設けたことを特徴とする火災検知器の汚
損軽減装置。 ２ カバーの周縁部に形成した鍔部を、上記回動
動作のガイド部分としたことを特徴とする請求項
１記載の火災検知器の汚損軽減装置。[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 contamination reducing device for a fire detector, characterized in that a detector box for storing the detector is provided with a translucent cover that covers a protective window, and a rotating means for rotating the cover. 2. The contamination reducing device for a fire detector according to claim 1, wherein a flange formed on the peripheral edge of the cover serves as a guide portion for the rotational movement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988065210U JPH0650076Y2 (en) | 1988-05-19 | 1988-05-19 | Fire detector stain reduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988065210U JPH0650076Y2 (en) | 1988-05-19 | 1988-05-19 | Fire detector stain reduction device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01172189U true JPH01172189U (en) | 1989-12-06 |
| JPH0650076Y2 JPH0650076Y2 (en) | 1994-12-14 |
Family
ID=31290651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988065210U Expired - Lifetime JPH0650076Y2 (en) | 1988-05-19 | 1988-05-19 | Fire detector stain reduction device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0650076Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001243568A (en) * | 2000-02-29 | 2001-09-07 | Nohmi Bosai Ltd | Flame detector |
| JP2021012724A (en) * | 2020-10-08 | 2021-02-04 | ホーチキ株式会社 | Fire detector |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5535610U (en) * | 1978-08-25 | 1980-03-07 | ||
| JPS6155788U (en) * | 1984-09-12 | 1986-04-15 |
-
1988
- 1988-05-19 JP JP1988065210U patent/JPH0650076Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5535610U (en) * | 1978-08-25 | 1980-03-07 | ||
| JPS6155788U (en) * | 1984-09-12 | 1986-04-15 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001243568A (en) * | 2000-02-29 | 2001-09-07 | Nohmi Bosai Ltd | Flame detector |
| JP2021012724A (en) * | 2020-10-08 | 2021-02-04 | ホーチキ株式会社 | Fire detector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0650076Y2 (en) | 1994-12-14 |