JPH0650076Y2 - Fire detector stain reduction device - Google Patents
Fire detector stain reduction deviceInfo
- Publication number
- JPH0650076Y2 JPH0650076Y2 JP1988065210U JP6521088U JPH0650076Y2 JP H0650076 Y2 JPH0650076 Y2 JP H0650076Y2 JP 1988065210 U JP1988065210 U JP 1988065210U JP 6521088 U JP6521088 U JP 6521088U JP H0650076 Y2 JPH0650076 Y2 JP H0650076Y2
- Authority
- JP
- Japan
- Prior art keywords
- cover
- fire detector
- fire
- detector
- protective window
- 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.)
- Expired - Lifetime
Links
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Fire-Detection Mechanisms (AREA)
- Fire Alarms (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） この考案は、炎から放射される輻射光を受光素子によっ
て検出する火災検知器の保護窓の汚損軽減装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a device for reducing pollution of a protective window of a fire detector in which radiant light emitted from a flame is detected by a light receiving element.
（従来の技術） 道路トンネル等に用いられる火災警報装置は、第６図に
平面図で例示する火災検知器１によって炎の輻射光の特
定の２波長を検出する構成である。(Prior Art) A fire alarm device used in a road tunnel or the like has a configuration in which a fire detector 1 illustrated in a plan view in FIG. 6 detects two specific wavelengths of radiant light of a flame.
即ち、トンネル壁面２から通路側に露出させた保護窓３
内に、２個１対の受光素子S1とS2を２組設け、炎の輻射
光のうち、長波長のスペクトルを第１の受光素子S1で、
又、短波長のスペクトルは第２の受光素子S2で、夫々検
出して図示外の回路によって電気信号に変換する。That is, the protective window 3 exposed from the tunnel wall surface 2 to the passage side
Two pairs of two light-receiving elements S 1 and S 2 are provided inside, and the long-wavelength spectrum of the radiant light of the flame is detected by the first light-receiving element S 1 .
The short-wavelength spectrum is detected by the second light receiving element S 2 and converted into an electric signal by a circuit (not shown).
そして、上記夫々の電気信号による出力電圧を比較し
て、火災のもつ波長分布の特徴に合うか否かの判断を行
って、自動車のライト等によるものか、或いは火災によ
るものかを判別し、火災と判断されるとき、所定の警報
を出力するものである。Then, by comparing the output voltage by each of the above electrical signals, it is determined whether or not it matches the characteristics of the wavelength distribution of the fire, to determine whether it is due to the light of the car, or due to the fire, When a fire is judged, a predetermined alarm is output.
（考案が解決しようとする課題） トンネル内では、自動車の排気ガスに含まれる媒煙，粉
塵や、路面から舞上る砂塵等が火災検知器１の保護窓３
に附着し、保護窓３の汚損が激しい。(Problems to be solved by the invention) Inside the tunnel, smoke and dust contained in the exhaust gas of the automobile, sand dust rising from the road surface, etc. are protected by the protective window 3 of the fire detector 1.
The protective window 3 is heavily soiled.
特に、自動車の進行方向（Ａ方向）に面した進行前面側
3aの汚損が著しいため、長期間性能を維持することがで
きないので、周期的に人手らよって保護窓３を拭ってい
る。Especially, the front side of the car facing the direction of travel (direction A)
Since the contamination of 3a is remarkable and the performance cannot be maintained for a long time, the protective window 3 is periodically wiped by hand.
長さ100mにつき、数個も配設されている多数の火災検知
器１を、環境の悪いトンネル内で清拭することは、労苦
の多いものである。It is a laborious task to clean a large number of fire detectors 1 arranged in a number of 100 m in a tunnel in a bad environment.
火災検知器のレンズやガラス等の透光体を清掃する機能
を有する光学式火災感知器として、実開昭61−55788号
を本願考案出願人は提案している。The applicant of the present invention has proposed Japanese Utility Model Application No. 61-55788 as an optical fire detector having a function of cleaning a transparent body such as a lens or glass of a fire detector.
この火災感知器は透光体の払拭手段を設けて透光体を回
転させ、或いは払拭手段を動作させる構造であって、レ
ンズ等が回転できる特別な火災検知器に構成し、或いは
払拭手段を備える特別な火災検知器に構成する必要があ
るため、従来の火災検知器をそのまま利用することはで
きないものである。This fire detector has a structure for wiping the translucent body to rotate the translucent body or to operate the wiping means, and is configured as a special fire detector in which a lens or the like can be rotated, or the wiping means is The conventional fire detector cannot be used as it is because it must be configured as a special fire detector.
この考案は、従来の火災検知器に、若干の構造を付加的
に設備することにより、保護窓の汚損を軽減できるよう
に工夫した簡易で低コストな火災検知器を提供すること
を目的としている。The purpose of this invention is to provide a simple and low-cost fire detector that is devised so as to reduce the contamination of the protective window by additionally installing some structure to the conventional fire detector. .
（課題を解決するための手段） 上記の目的を達成するためのこの考案の構成は、炎から
放射される輻射光の特定の２波長の比を、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、
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火災検知器の汚損軽減装
置である。(Means for Solving the Problems) The structure of the present invention for achieving the above-mentioned object is to provide a pair of light receiving elements in which a ratio of two specific wavelengths of radiant light emitted from a flame is covered with a protective window. In a fire detector that detects a fire by detecting a fire detector, a detector box that houses the fire detector is provided with a translucent cover that covers the protective window and a rotating unit that rotates the cover.
In the device for reducing pollution of a fire detector, a collar portion formed on a peripheral portion of the cover serves as a guide portion for the above-described rotation operation.
（作用） 受光素子S1，S2及び、保護窓14を覆っているカバー20
は、回動するので、粉塵，砂塵等はカバー20の特定個所
に附着することは無く、カバー20の汚損進行速度は遅く
なり、カバー20の清拭必要周期は延伸される。(Operation) Cover 20 covering the light receiving elements S 1 and S 2 and the protective window 14
Since it rotates, dust, sand and the like do not adhere to a specific portion of the cover 20, the speed at which the cover 20 progresses to be soiled slows down, and the required cleaning cycle of the cover 20 is extended.
この考案の汚損軽減装置は、受光素子S1，S2を備えた火
災検知器１を収納している検知器箱12に、カバー20とそ
の回動手段22とを設けた構成であるため、火災検知器自
体は従来のままとして上記カバー20及び回動手段22を附
設することによって簡易な構造となり、低コストで実施
できる。Since the pollution abatement device of the present invention has a configuration in which a cover 20 and its rotating means 22 are provided in a detector box 12 which houses the fire detector 1 including the light receiving elements S 1 and S 2 , The fire detector itself has a simple structure by attaching the cover 20 and the rotating means 22 as it is, and can be implemented at low cost.
カバー20の周縁部に形成した鍔部19を、回動動作のガイ
ド部分に構成したので、複雑な軸受構造は不要となって
回動手段22は簡易となり、火災検出機能が阻害されるよ
うなことも無い。Since the collar portion 19 formed on the peripheral portion of the cover 20 is configured as a guide portion for the rotation operation, a complicated bearing structure is not required, the rotation means 22 is simplified, and the fire detection function is impaired. There is no such thing.
（実施例） 次にこの考案の実施例を図に基いて説明する。第１図に
汚損軽減装置11の正面図を、第２図にその一部断面の側
面図を、夫々示した。(Embodiment) Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a front view of the pollution abatement device 11, and FIG. 2 shows a side view of a partial cross section thereof.
トンネル壁面２に検知器箱12が、ボルト13にて取付けら
れ、火災検知器１は、検知器本体15と後記する保護窓14
とよりなり、検知器本体15はビス16により検知器箱12に
取付けられ、同上第１図の矢線Ａで示す方向に自動車が
走行するとき、進行方向前側のゾーンを検出する２個１
対の受光素子S1とS2（同上図の左側のもの）及び、進行
方向後側のゾーンを検出する１対の受光素子S1とS2（同
上図の右側のもの）が、夫々、設けられている。The detector box 12 is attached to the tunnel wall surface 2 with the bolts 13, and the fire detector 1 includes the detector body 15 and a protective window 14 described later.
The detector body 15 is attached to the detector box 12 with screws 16 and detects the front zone in the traveling direction when the vehicle runs in the direction indicated by arrow A in FIG.
A pair of light receiving elements S 1 and S 2 (the one on the left side in the above figure) and a pair of light receiving elements S 1 and S 2 (the one on the right side in the figure above) for detecting the zone on the rear side in the traveling direction are respectively It is provided.
ガラス又は合成樹脂材を用いて半球殻状に作られた乳白
色の保護窓14は、検知器本体15へ、ビス18によって取付
けられている。A milky white protective window 14 formed in a hemispherical shell shape using glass or a synthetic resin material is attached to a detector body 15 with screws 18.
保護窓14を覆うことができる半球殻状で周縁部に鍔部19
が備えているカバー20を、上記保護窓14と同様な材料を
用いて形成し、鍔部19の外周部に、ギヤ部21を形成して
おく。A hemispherical shell that can cover the protective window 14 and has a collar 19 on the periphery.
The cover 20 provided in is formed using the same material as the protective window 14, and the gear portion 21 is formed on the outer peripheral portion of the collar portion 19.
鍔部19をガイド部分として回転軸芯Ｃの回りにこのカバ
ー20を、回動手段22によってゆるやかに回動させる構成
である。The cover 20 is configured to be gently rotated by the rotating means 22 around the rotary shaft core C using the collar portion 19 as a guide portion.
上記第１図と第２図における回動手段22は、カバー20の
ギヤ部21に噛合うべく配設した３個のガイドピニオン23
及び、駆動ピニオン24と、駆動ピニオン24を駆動するモ
ータ25とを主体とするものである。The rotating means 22 shown in FIGS. 1 and 2 has three guide pinions 23 arranged to mesh with the gear portion 21 of the cover 20.
The drive pinion 24 and the motor 25 that drives the drive pinion 24 are mainly used.
即ち、断面を大略コ字形としたガイド26を、検知器箱12
の前板17へ、ボルト27によって複数個取付け、カバー20
の鍔部19をこれらのガイド26によってはさむようにし、
ガイドピニオン23及び、駆動ピニオン24の夫々の軸28,2
9をガイド26に軸支させ、軸29を減速機付のモータ25に
連結したものである。That is, the guide 26 having a substantially U-shaped cross section is attached to the detector box 12
Attach a plurality of bolts 27 to the front plate 17 of the
So that the collar portion 19 of the
Each shaft 28, 2 of the guide pinion 23 and the drive pinion 24
9 is pivotally supported by a guide 26, and a shaft 29 is connected to a motor 25 with a reduction gear.
カバー20は、その鍔部19が周方向に配置された複数個の
ガイド26に係合しているので、前板17に対する前後方向
の動きを規制され、ギヤ部21が複数個のガイドピニオン
23と噛合っているので、回転軸芯Ｃの回りに振れ少なく
回動できる。Since the flange portion 19 of the cover 20 is engaged with the plurality of guides 26 arranged in the circumferential direction, movement of the cover 20 in the front-rear direction with respect to the front plate 17 is restricted, and the gear portion 21 has a plurality of guide pinions.
Since it meshes with 23, it can rotate around the axis C of rotation with little vibration.
モータ25は、火災警報装置30に電源装置31から電源が供
給されている間中、常に回転するように回路が構成され
ている第３図の実施例でも良い。The motor 25 may be the embodiment of FIG. 3 in which the circuit is configured so as to always rotate while the fire alarm device 30 is being supplied with power from the power supply device 31.
又、第４図の如く、タイマー32によって設定された時間
毎にその限時接点32aがモータ25に通電を行うように構
成しても良い。Further, as shown in FIG. 4, the time contact 32a may be configured to energize the motor 25 every time set by the timer 32.
電源装置31として、太陽電池、或いは、風力発電機等、
遠方からの配電を要しないものを用いても良い。As the power supply device 31, a solar cell, or a wind power generator,
You may use the thing which does not require power distribution from a distant place.
カバー20の回動駆動は、上述したギヤ噛合いによるほ
か、第５図に例示した如く、鼓形の駆動ローラー33及
び、複数個のガイドローラー34によって行うこともで
き、駆動動作における摩擦力を増すために、例えばゴム
材35を鍔部19の外周に貼付けている。The rotation drive of the cover 20 can be performed not only by the gear meshing described above but also by a drum-shaped drive roller 33 and a plurality of guide rollers 34 as illustrated in FIG. To increase the number, for example, a rubber material 35 is attached to the outer circumference of the collar portion 19.
上述のようにカバー20は回動手段22によってゆるやかに
回動され、排気ガス中の媒煙，粉塵，路面から舞上る砂
塵等は、カバー20の表面に偏らずに附着する。As described above, the cover 20 is gently rotated by the rotating means 22, so that the smoke and dust in the exhaust gas, the sand dust rising from the road surface, and the like adhere to the surface of the cover 20 without being biased.
従って、かかるカバー20を備えていない従来のものにお
ける保護窓３の如く、進行前面側に附着が甚だしくなる
に比べて、この考案では汚損進行が遅くなり、従来より
も長期間（約２〜３倍ていど）にわたって清拭しなどで
火災検出が可能となった。Therefore, as compared with the conventional protective window 3 that does not have the cover 20, attachment is more prominent on the front side of the process, but in the present invention, the progress of fouling is slower, and a longer period (about 2-3 It is now possible to detect fires by wiping over.
火災検知器は従来のものをそのまま使用して、周縁部に
鍔部19を有して火災検知器の保護窓14を覆う透光性のカ
バー20と、このカバー20を回動する回動手段22とをこの
火災検知器に付加的に設備することにより、簡易で低コ
ストにカバー20の汚損を軽減できるものとなった。A conventional fire detector is used as it is, a translucent cover 20 having a collar portion 19 at the peripheral edge thereof to cover the protective window 14 of the fire detector, and a rotating means for rotating the cover 20. By additionally installing 22 and 22 to this fire detector, the contamination of the cover 20 can be reduced easily and at low cost.
（考案の効果） この考案に係る火災検知器の汚損軽減装置は上述のよう
に、受光素子S1，S2及び、保護窓14を覆うべく設けたカ
バー20を回動したので、空気中の媒煙，粉塵，砂塵等
は、カバー20の特定個所に附着することは無くなってカ
バー20の表面の全面に薄められるように附着し、これに
より、カバー20の汚損進行速度は遅くなる。(Effect of the device) As described above, the device for reducing pollution of a fire detector according to the present invention rotates the cover 20 provided to cover the light receiving elements S 1 and S 2 and the protective window 14, as described above, Smoke, dust, sand dust, etc. are not attached to a specific portion of the cover 20 and are attached so as to be thinned over the entire surface of the cover 20, whereby the speed of fouling of the cover 20 is slowed down.
これにより、カバー20の清拭必要周期は述伸され、労力
は軽減される。As a result, the period required for wiping the cover 20 is extended and the labor is reduced.
そして、火災検知器自体はそのままでカバー20と回動手
段22とを附設することによってこの考案の構成が得られ
るので、低コストで実施できる。Since the structure of the present invention can be obtained by attaching the cover 20 and the rotating means 22 while keeping the fire detector itself, it can be implemented at low cost.
カバー20の周縁部に形成した鍔部19を、回動動作のガイ
ド部分に構成することによって複雑な軸受構造を必要と
せずにカバー20は所定に回動でき、回動手段22は簡易な
構成となり、しかも、受光素子S1，S2の検出ゾーンに鍔
部19が入り込むことも無く、火災検出機能は阻害されな
い。By forming the flange portion 19 formed on the peripheral portion of the cover 20 in the guide portion for the rotation operation, the cover 20 can be rotated in a predetermined manner without requiring a complicated bearing structure, and the rotation means 22 has a simple structure. In addition, the collar portion 19 does not enter the detection zone of the light receiving elements S 1 and S 2 , and the fire detection function is not hindered.
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、25……モータ、26……ガイド、28,2
9……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、3
4……ガイドローラー、35……ゴム材、Ｃ……回転軸
芯、S1，S2……受光素子。1 to 5 show an embodiment of the present invention.
FIG. 1 is a front view of the devising device, FIG. 2 is a side view in which a part of FIG. 1 is shown in section, FIGS. 3 and 4 are circuit diagrams showing respective embodiments of a motor drive circuit, and FIG. FIG. 6 is a partial cross-sectional side view showing another embodiment, and FIG. 6 is a plan view of a conventional fire detector. 1 …… Fire detector, 2 …… Tunnel wall, 3,14 …… Protective window, 3a …… Advance front side, 11 …… Staining reduction device, 12 …… Detector box, 13,27 …… Bolt, 15 ...... Detector body, 16,18…
… Screws, 17 …… Front plate, 19 …… Collar part, 20 …… Cover, 21…
… Gear part, 22 …… Rotating means, 23 …… Guide pinion, 24
...... Drive pinion, 25 …… motor, 26 …… guide, 28,2
9 ... Axis, 30 ... Fire alarm device, 31 ... Power supply device, 32 ...
… Timer, 32a …… Time limit contact, 33 …… Drive roller, 3
4 …… Guide roller, 35 …… Rubber material, C …… Rotation axis core, S 1 , S 2 …… Light receiving element.
Claims (1)
比を、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、
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火災検知器の汚損軽減装
置。1. A fire detector for detecting a ratio of two specific wavelengths of radiant light emitted from a flame by a pair of light receiving elements covered with a protective window to judge a fire, the fire detector being housed. In the detector box to be provided, a translucent cover for covering the protective window and a rotating means for rotating the cover are provided,
A device for reducing pollution of a fire detector, characterized in that a brim portion formed on a peripheral portion of the cover serves as a guide portion for the above-described rotation operation.
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 JPH01172189U (en) | 1989-12-06 |
| JPH0650076Y2 true 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) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3891465B2 (en) * | 2000-02-29 | 2007-03-14 | 能美防災株式会社 | Flame detector |
| JP7097417B2 (en) * | 2020-10-08 | 2022-07-07 | ホーチキ株式会社 | Fire detector |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5821037Y2 (en) * | 1978-08-25 | 1983-05-02 | 能美防災工業株式会社 | Dust cover for radiation sensor |
| JPH0441434Y2 (en) * | 1984-09-12 | 1992-09-29 |
-
1988
- 1988-05-19 JP JP1988065210U patent/JPH0650076Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01172189U (en) | 1989-12-06 |
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