JP2002298242A - Flame detector - Google Patents

Flame detector

Info

Publication number
JP2002298242A
JP2002298242A JP2001101618A JP2001101618A JP2002298242A JP 2002298242 A JP2002298242 A JP 2002298242A JP 2001101618 A JP2001101618 A JP 2001101618A JP 2001101618 A JP2001101618 A JP 2001101618A JP 2002298242 A JP2002298242 A JP 2002298242A
Authority
JP
Japan
Prior art keywords
light
light receiving
flame detector
receiving glass
glass
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
Application number
JP2001101618A
Other languages
Japanese (ja)
Other versions
JP3966537B2 (en
Inventor
Ikuhisa Hatanaka
育久 畠中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nohmi Bosai Ltd
Original Assignee
Nohmi Bosai Ltd
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 by Nohmi Bosai Ltd filed Critical Nohmi Bosai Ltd
Priority to JP2001101618A priority Critical patent/JP3966537B2/en
Publication of JP2002298242A publication Critical patent/JP2002298242A/en
Application granted granted Critical
Publication of JP3966537B2 publication Critical patent/JP3966537B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a flame detector allowing accurately measuring of the degree of stain of a light receiving glass of the flame detector and capable of preventing a cleaning cycle of the flame detector from being shortened. SOLUTION: This flame detector having an enclosure provided with a flat face part, a light receiving glass fixed to the enclosure protruding from the flat face part, a light receiving part provided inside the light receiving glass, a transparent member provided at the flat face part not protruding from the flat face part and forming a test window, and a light emitting element for detecting a stain provided in the enclosure and feeding a light to the light receiving part through the transparent member and the light receiving glass.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、汚れ検知用発光素
子が発光した光を、受光ガラスを介して、受光部が受
け、上記受光部が受けた光量に基づいて、上記受光ガラ
スの汚れ度合を検出する炎検知器に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light-receiving element which receives light emitted by a light-emitting element for detecting a stain via a light-receiving glass. The present invention relates to a flame detector for detecting

【0002】[0002]

【従来の技術】図3は、従来の炎検知器FD10を示す
概略横断面図である。
FIG. 3 is a schematic cross-sectional view showing a conventional flame detector FD10.

【0003】トンネル向けの従来の炎検知器FD10
は、その正面がほぼ楕円状または円状であり、その断面
が半球状に突出する受光ガラス20内に受光部30が設
けられ、この受光部30が、炎からの輻射光を監視し、
炎の存在を識別する。上記受光部30は、受光ガラス2
0を通して上記輻射光を監視するので、受光ガラス20
がトンネル内の塵埃等で汚れると、受光部30に到達す
る上記輻射光の光量が減少し、正常に炎を検知できなく
なる可能性がある。
A conventional flame detector FD10 for tunnels
Is provided with a light receiving portion 30 in a light receiving glass 20 whose front surface is substantially elliptical or circular and whose cross section protrudes in a hemispherical shape, and this light receiving portion 30 monitors radiation light from a flame,
Identify the presence of a flame. The light receiving section 30 is a light receiving glass 2
0, the radiation light is monitored.
If the light is contaminated with dust or the like in the tunnel, the amount of the radiated light reaching the light receiving unit 30 may decrease, and the flame may not be detected normally.

【0004】炎を正常に検知できなくなることを阻止す
るために、受光ガラス20の汚損度を測定し、上記汚損
度が所定レベル以上になると、炎検知器FD10の受光
ガラス20等を清掃し、これによって、炎検知器FD1
0の炎検知性能を正常に保つようにしている。
In order to prevent the flame from being detected normally, the degree of contamination of the light receiving glass 20 is measured, and when the degree of the contamination becomes a predetermined level or more, the light receiving glass 20 of the flame detector FD10 is cleaned, Thereby, the flame detector FD1
The flame detection performance of 0 is maintained normally.

【0005】この受光ガラス20の汚損度を検出する場
合、受光ガラス20の外部に筒状のグローブ80が設け
られ、この筒状のグローブ80内に汚れ検知用発光素子
81を設け、受光ガラス20の内部に、受光部30とし
て火災検知素子と兼用の汚れ検知用受光素子83を設け
ている。そして、汚れ検知用発光素子81が、受光ガラ
ス20の外部から所定強度の試験光を照射し、受光ガラ
ス20内の受光素子83が上記試験光を受け、汚れ検知
用発光素子81による照射量と、受光素子83による受
光量とに基づいて、受光ガラス20の汚損度を算出す
る。
To detect the degree of contamination of the light receiving glass 20, a cylindrical globe 80 is provided outside the light receiving glass 20, and a light emitting element 81 for detecting dirt is provided in the cylindrical globe 80. Is provided with a dirt detection light-receiving element 83 which is also used as a fire detection element as the light-receiving section 30. Then, the dirt detection light emitting element 81 irradiates test light of a predetermined intensity from outside the light receiving glass 20, the light receiving element 83 in the light receiving glass 20 receives the test light, and determines the irradiation amount of the dirt detection light emitting element 81. Then, the degree of contamination of the light receiving glass 20 is calculated based on the amount of light received by the light receiving element 83.

【0006】[0006]

【発明が解決しようとする課題】しかし、グローブ80
は、炎検知器FD10の筐体70から突出しているの
で、気流によってトンネル内の塵埃等の汚れが付き易
く、また、受光ガラス20の汚損度測定結果には、受光
ガラス20の汚れに、グローブ80の汚れが加算される
ので、汚損度測定結果は、実際の汚損度よりも大きくな
り、炎検知器FD10の清掃周期が短くなるという問題
がある。
However, the glove 80
Is protruded from the housing 70 of the flame detector FD10, so that dust such as dust in the tunnel easily adheres to the airflow. Since 80 stains are added, the pollution degree measurement result becomes larger than the actual pollution degree, and there is a problem that the cleaning cycle of the flame detector FD10 is shortened.

【0007】また、炎検知器FD10は、一般に、路面
から2.5mの高さの壁面に設置され、受光ガラス20
の中心よりも上側は、汚れが降り積もるので、塵埃等が
堆積しやすく、さらにグローブ80が、受光ガラス20
の上側に配置されているので、汚れ検知用発光素子81
による受光ガラス20の汚損測定時に、受光ガラス20
の中心よりも上側の降り積もった汚れをも検出してい
る。
[0007] The flame detector FD10 is generally installed on a wall having a height of 2.5 m from the road surface.
Above the center of the glass, dirt accumulates, dust and the like easily accumulate, and the globe 80 is further
, The light emitting element 81 for dirt detection
When the contamination of the light receiving glass 20 is measured by the
Is also detected above the center.

【0008】火災検出する場合、受光ガラス20の中心
よりも下側部分であって、路面から2.5mの高さまで
の範囲の火災を検出し、また、実際の火災も、路面から
2.5mの高さまでの範囲で殆ど発生するので、この受
光ガラス20の中心よりも下側の汚れが重要である。
In the case of detecting a fire, a fire in a range below the center of the light receiving glass 20 up to a height of 2.5 m from the road surface is detected. Is almost generated in the range up to the height of the light receiving glass 20, so that the contamination on the lower side of the center of the light receiving glass 20 is important.

【0009】しかし、従来例において、受光ガラス20
の中心よりも上側に配置されているグローブ80の下側
と、受光ガラス20の上側との間で、汚損度測定が行わ
れている。したがって、測定された汚損度は、実際の火
災検出に有用である受光ガラス20の下側における汚損
度ではなく、受光ガラス20の下側における汚損度より
も大きい値になり、したがって、炎検知器FD10の清
掃周期が短くなるという問題がある。
However, in the conventional example, the light receiving glass 20
Is measured between a lower side of the globe 80 disposed above the center of the light receiving glass 20 and an upper side of the light receiving glass 20. Therefore, the measured degree of pollution is not the degree of contamination below the light receiving glass 20 that is useful for actual fire detection, but is a value greater than the degree of contamination below the light receiving glass 20. There is a problem that the cleaning cycle of the FD 10 is shortened.

【0010】また、筒状のグローブ80は、ほぼ半球状
の受光ガラス20に比べて、形状的に清掃しづらいとい
う問題がある。
Further, there is a problem that the cylindrical globe 80 is difficult to clean in shape compared with the substantially hemispherical light receiving glass 20.

【0011】本発明は、炎検知器の受光ガラスの汚損度
を正確に測定することができ、さらに、炎検知器の清掃
周期が短くなることを阻止することができる炎検知器を
提供することを目的とするものである。
An object of the present invention is to provide a flame detector capable of accurately measuring the degree of contamination of the light receiving glass of the flame detector and preventing the cleaning cycle of the flame detector from being shortened. It is intended for.

【0012】また、本発明は、実際の火災検出に有用で
ある受光ガラス下側の汚損度を測定することを目的とす
る。
Another object of the present invention is to measure the degree of contamination below the light receiving glass, which is useful for actual fire detection.

【0013】[0013]

【課題を解決するための手段】本発明は、平面部を具備
する筐体と、上記平面部から突出して上記筐体に固定さ
れている受光ガラスと、上記受光ガラスの内部に設けら
れている受光部と、上記平面部から突出せずに、上記平
面部に設けられ、試験窓を形成する透明部材と、上記筐
体内に設けられ、上記透明部材と上記受光ガラスとを通
して、上記受光部に光を送る汚れ検知用発光素子とを有
する炎検知器である。
According to the present invention, there is provided a housing having a flat portion, a light-receiving glass projecting from the flat portion and fixed to the housing, and provided inside the light-receiving glass. The light receiving portion, without protruding from the flat portion, provided on the flat portion, a transparent member forming a test window, and provided in the housing, through the transparent member and the light receiving glass, to the light receiving portion It is a flame detector having a dirt detecting light emitting element for transmitting light.

【0014】[0014]

【発明の実施の形態および実施例】図1は、本発明の第
1の実施例である炎検知器FD1を示す正面図であり、
炎検知器FD1が壁面に設置されている状態を正面から
見た図である。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a front view showing a flame detector FD1 according to a first embodiment of the present invention.
It is the figure which looked at the state where the flame detector FD1 was installed in the wall surface from the front.

【0015】図2は、図1の概略横断面図である。FIG. 2 is a schematic cross-sectional view of FIG.

【0016】炎検知器FD1は、平面部11を具備する
筐体10と、平面部11から突出して筐体10に固定さ
れている受光ガラス20と、受光ガラス20の内部に設
けられている受光部30と、平面部11から突出せず
に、平面部11に設けられ、試験窓41を形成する透明
ガラス40と、筐体10内に設けられ、透明ガラス40
と受光ガラス20とを通して、受光部30に光を送る汚
れ検知用発光素子50とを有する。ここで、汚れ検知用
発光素子50は、その向きが受光部30を向いて、透明
ガラス40付近の筐体10内に設置される。
The flame detector FD1 includes a housing 10 having a flat portion 11, a light-receiving glass 20 protruding from the flat portion 11, and fixed to the housing 10, and a light-receiving glass provided inside the light-receiving glass 20. A transparent glass 40 that is provided on the flat portion 11 without protruding from the flat portion 11 and forms the test window 41;
And a dirt detection light emitting element 50 for transmitting light to the light receiving section 30 through the light receiving glass 20. Here, the dirt detection light emitting element 50 is installed in the housing 10 near the transparent glass 40 with its direction facing the light receiving unit 30.

【0017】また、炎検知器FD1が壁等に設置されて
いるときに、図1に示すように、受光ガラス20の中心
よりも下側に、透明ガラス40が設置され、、汚れ検知
用発光素子50も同様に受光ガラス20の中心よりも下
側に設置されている。
When the flame detector FD1 is installed on a wall or the like, a transparent glass 40 is installed below the center of the light receiving glass 20, as shown in FIG. The element 50 is also provided below the center of the light receiving glass 20.

【0018】次に、上記第1の実施例の動作について説
明する。
Next, the operation of the first embodiment will be described.

【0019】炎検知器FD1は、図示しない受信機から
の命令によって、1日1回、受光ガラス20の汚損測定
を行い、この汚損測定値が、規定の汚損値以上になる
と、上記受信機に汚損警報を送信し、規定の監視範囲を
保てないことを通知する。このときに清掃が必要にな
る。
The flame detector FD1 measures the contamination of the light receiving glass 20 once a day in accordance with a command from a receiver (not shown). Send a pollution warning to notify that the specified monitoring range cannot be maintained. At this time, cleaning is required.

【0020】ところで、第1の実施例においては、汚れ
検知用発光素子50の試験窓41が、筐体10の平面部
11と同一平面上に配置されているので、気流が当たる
こともなく、さらに塵埃が降り積もることもなく、トン
ネル内の塵埃等に対して汚れにくい構造であり、また清
掃もし易く、炎検知器FD1を清掃する周期を長くする
ことができる。
In the first embodiment, since the test window 41 of the light emitting element 50 for dirt detection is arranged on the same plane as the flat portion 11 of the housing 10, the air flow does not hit the test window 41. Furthermore, the structure is such that dust does not accumulate and is hardly contaminated with dust and the like in the tunnel, and is easy to clean, and the cleaning cycle of the flame detector FD1 can be lengthened.

【0021】また、従来は、受光ガラス20の汚損を測
定するときに、気流によって汚れたグローブ80の汚れ
が加算されていたので、規定の汚損値に早く到達してい
た。さらに、測定位置が受光ガラス20の上側であるの
で、受光ガラス20に降り積もる汚れによって規定の汚
損値に早く到達していた。また、さらに、炎検知器FD
1の設置高さは、路面よりも2.5m上に設置されてお
り、実際に火災になった場合に、受光ガラス20の下か
ら中央部付近までで実際に火災が発生する路面から2.
5mの高さまでの範囲の火災を監視しているので、下側
の汚れの方が重要である。
Further, conventionally, when measuring the contamination of the light receiving glass 20, the contamination of the glove 80, which is contaminated by the airflow, is added, so that the prescribed contamination value is reached quickly. Furthermore, since the measurement position is above the light-receiving glass 20, the prescribed contamination value was quickly reached by the dirt that accumulated on the light-receiving glass 20. Further, the flame detector FD
The installation height of 1 is 2.5 m above the road surface, and when a fire actually occurs, from the road surface where a fire actually occurs from below the light receiving glass 20 to near the center.
The lower dirt is more important, as it monitors fires up to a height of 5 m.

【0022】そのため、上記第1の実施例では、従来の
グローブ80に対応する部分である試験窓41を、筐体
10から出ないように平面化し、試験窓41の入射面4
2を、斜めにカットしている。試験時に、受光ガラス2
0(磨りガラス)の内部で、試験光が散乱し、その光を
受光部30が検出している。
For this reason, in the first embodiment, the test window 41, which is a portion corresponding to the conventional glove 80, is flattened so as not to come out of the housing 10, and the entrance surface 4 of the test window 41 is formed.
2 is cut diagonally. At the time of the test,
The test light is scattered inside 0 (ground glass), and the light is detected by the light receiving unit 30.

【0023】また、汚れ検知用発光素子50と試験窓4
1とが、受光ガラス20の中心よりも、下に配置されて
いるので、上から降り積もる汚れの影響を受光ガラス2
0が受けず、したがって、実際の火災検出に有用な受光
ガラス20の下側の汚損度のみを測定できるので、火災
の検出に影響なく、炎検知器FD1の清掃周期をより長
くすることができる。
The dirt detecting light emitting element 50 and the test window 4
1 is disposed below the center of the light receiving glass 20, so that the influence of dirt that accumulates from above is not affected by the light receiving glass 2
0 is not received, and therefore, only the degree of contamination on the lower side of the light receiving glass 20 useful for actual fire detection can be measured, so that the cleaning cycle of the flame detector FD1 can be made longer without affecting fire detection. .

【0024】さらに、上記第1の実施例では、試験窓4
1の入射面42を、斜めにカットし、汚れ検知用発光素
子50から照射される光の光軸と、試験窓41の入射面
42とがほぼ垂直に交わるように試験窓41が形成され
ており、試験窓41の入射面42において試験光が反射
する量を少なくすることができ、受光ガラス20内の受
光部30(汚れ検知用受光素子83)に導かれる光量を
多くすることができ、この結果、受光ガラス20の汚損
度測定が正確に行われ、また、汚れ検知用発光素子50
の発光強度を必要以上に大きくしなくても足りるので、
低消費電流化が可能になる。
Further, in the first embodiment, the test window 4
1 is cut obliquely, and the test window 41 is formed so that the optical axis of the light emitted from the dirt detecting light emitting element 50 and the incident surface 42 of the test window 41 intersect substantially perpendicularly. As a result, the amount of test light reflected on the entrance surface 42 of the test window 41 can be reduced, and the amount of light guided to the light receiving unit 30 (the dirt detection light receiving element 83) in the light receiving glass 20 can be increased. As a result, the degree of contamination of the light receiving glass 20 is accurately measured, and the contamination detecting light emitting element 50
It is not necessary to increase the emission intensity of the
Low current consumption can be achieved.

【0025】また、上記のように受光部30として、汚
れ検知用受光素子83を火災検知素子と兼用すれば、受
光ガラス20内という限られたスペースを有効活用する
ことができる。なお、汚れ検知用受光素子を火災検知素
子と別に設けるようにしてもよい。
Further, as described above, if the dirt detecting light receiving element 83 is also used as a fire detecting element as the light receiving section 30, a limited space within the light receiving glass 20 can be effectively utilized. The light receiving element for detecting dirt may be provided separately from the fire detecting element.

【0026】次に、本発明の第2の実施例について説明
する。
Next, a second embodiment of the present invention will be described.

【0027】第2の実施例は、上記第1の実施例に示す
炎検知器FD1において、汚れ検知用発光素子50と試
験窓41とが、筐体10の平面部11から突出している
ものを含む実施例である。つまり、第2の実施例は、汚
れ検知用発光素子50と試験窓41とが、受光ガラス2
0の中心よりも下側に配置されている実施例である。
In the second embodiment, in the flame detector FD1 shown in the first embodiment, the dirt detecting light emitting element 50 and the test window 41 protrude from the flat portion 11 of the housing 10. This is an embodiment including: That is, in the second embodiment, the dirt detection light emitting element 50 and the test window 41 are
This is an embodiment in which it is arranged below the center of 0.

【0028】すなわち、第2の実施例は、平面部を具備
する筐体と、上記平面部から突出して上記筐体に固定さ
れている受光ガラスと、上記受光ガラスの内部に設けら
れている受光部と、上記筐体に設けられている試験窓
と、上記試験窓と上記受光ガラスとを通して、上記受光
部に光を送る汚れ検知用発光素子とを有し、上記汚れ検
知用発光素子と、上記試験窓とが、上記受光ガラスの中
心よりも下側に配置されている炎検知器である。
That is, in the second embodiment, a housing provided with a flat portion, a light-receiving glass projecting from the flat portion and fixed to the housing, and a light-receiving glass provided inside the light-receiving glass are provided. Unit, a test window provided in the housing, through the test window and the light receiving glass, having a dirt detection light emitting element that sends light to the light receiving unit, the dirt detection light emitting element, The test window is a flame detector disposed below the center of the light receiving glass.

【0029】第2の実施例では、試験窓41が、平面部
11から突出していても、また、第1の実施例のように
平面部11から突出せずに、平面部11に設けられても
よく、実際の火災検出に有用である受光ガラス20の下
側の汚損度を測定することができる。
In the second embodiment, even if the test window 41 protrudes from the flat portion 11, it does not protrude from the flat portion 11 as in the first embodiment, but is provided on the flat portion 11. Alternatively, it is possible to measure the degree of contamination on the lower side of the light receiving glass 20, which is useful for actual fire detection.

【0030】また、試験窓41が、筐体10よりも突出
して形成されたグローブである場合、このグローブは、
天井面視で、受光ガラス20の陰に隠れるように、上記
グローブを配置すれば、上から降り積もる塵埃等で汚れ
にくく、この結果、受光ガラス20下側の汚損度を正確
に確認することができ、炎検知器FD1の清掃周期を長
くすることができる。
When the test window 41 is a glove formed so as to protrude from the housing 10, this glove is
By arranging the glove so as to be hidden behind the light receiving glass 20 when viewed from the ceiling, the glove is hardly contaminated with dust or the like that accumulates from above. As a result, the degree of contamination on the lower side of the light receiving glass 20 can be accurately confirmed. The cleaning cycle of the flame detector FD1 can be lengthened.

【0031】なお、グローブは受光ガラス20の陰に隠
れれば、受光ガラスの真下でも、端でもよく、受光ガラ
ス内の受光部はグローブ内の汚れ検知用発光素子と対応
する位置に設けるようにする。このとき、受光部とし
て、汚れ検知用受光素子と火災検知素子とを兼用しても
よいし、別個に設けてもよい。
If the globe is hidden behind the light-receiving glass 20, it may be directly below or at the edge of the light-receiving glass, and the light-receiving portion in the light-receiving glass may be provided at a position corresponding to the dirt detecting light emitting element in the glove. I do. At this time, the light receiving unit may serve both as the light detecting element for detecting dirt and the fire detecting element, or may be provided separately.

【0032】また、トンネル内の気流の流れによって、
グローブは、斜め上から降り積もる塵埃等でも汚れる
が、幅広の受光ガラス20がグローブの上側に存在して
いるので、上記グローブが汚れにくい。
Also, by the flow of the air current in the tunnel,
The glove is stained by dust or the like that accumulates diagonally from above, but since the wide light receiving glass 20 exists above the glove, the glove is not easily stained.

【0033】また、グローブの位置が受光ガラス20に
よって隠れにくい場合に、別途ワイパーや散水洗浄等を
付加してグローブの汚れを落とせる構成としてもよい。
Further, when the position of the glove is hard to be hidden by the light receiving glass 20, a configuration may be adopted in which a dirt on the glove can be removed by adding a separate wiper, watering and washing.

【0034】なお、透明ガラス40の代わりに、ガラス
以外の透明部材を設けるようにしてもよい。
In place of the transparent glass 40, a transparent member other than glass may be provided.

【0035】[0035]

【発明の効果】本発明によれば、炎検知器の受光ガラス
の汚損度を正確に測定することができ、さらに、炎検知
器の清掃周期が短くなることを阻止することができると
いう効果を奏する。また、実際の火災検出に有用である
受光ガラスの下側の汚損度を測定することができるとい
う効果を奏する。
According to the present invention, the degree of contamination of the light receiving glass of the flame detector can be accurately measured, and further, the cleaning cycle of the flame detector can be prevented from being shortened. Play. Further, there is an effect that the degree of contamination on the lower side of the light receiving glass, which is useful for actual fire detection, can be measured.

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

【図1】本発明の第1の実施例である炎検知器FD1を
示す正面図であり、炎検知器FD1が壁面に設置されて
いる状態を正面から見た図である。
FIG. 1 is a front view showing a flame detector FD1 according to a first embodiment of the present invention, and is a view of a state in which the flame detector FD1 is installed on a wall, as viewed from the front.

【図2】図1の概略横断面図である。FIG. 2 is a schematic cross-sectional view of FIG.

【図3】従来の炎検知器FD10を示す概略横断面図で
ある。
FIG. 3 is a schematic cross-sectional view showing a conventional flame detector FD10.

【符号の説明】[Explanation of symbols]

FD1…炎検知器、 10…筐体、 11…平面部、 20…受光ガラス、 30…受光部、 40…透明ガラス、 41…試験窓、 42…試験窓の入射面、 50…汚れ検知用発光素子。 FD1: flame detector, 10: housing, 11: flat part, 20: light receiving glass, 30: light receiving part, 40: transparent glass, 41: test window, 42: entrance surface of the test window, 50: light emission for detecting dirt element.

───────────────────────────────────────────────────── フロントページの続き Fターム(参考) 2G051 AA90 AB01 AB20 CB05 EA11 2G065 AB24 AB26 BA02 BC14 BD06 CA29 DA05 DA06 DA15 5C085 AA11 AB01 BA31 CA14 FA16 FA35  ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 2G051 AA90 AB01 AB20 CB05 EA11 2G065 AB24 AB26 BA02 BC14 BD06 CA29 DA05 DA06 DA15 5C085 AA11 AB01 BA31 CA14 FA16 FA35

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 平面部を具備する筐体と;上記平面部か
ら突出して上記筐体に固定されている受光ガラスと;上
記受光ガラスの内部に設けられている受光部と;上記平
面部から突出せずに、上記平面部に設けられ、試験窓を
形成する透明部材と;上記筐体内に設けられ、上記透明
部材と上記受光ガラスとを通して、上記受光部に光を送
る汚れ検知用発光素子と;を有することを特徴とする炎
検知器。
1. A housing having a flat portion; a light-receiving glass projecting from the flat portion and fixed to the housing; a light-receiving portion provided inside the light-receiving glass; A transparent member provided on the flat portion and forming a test window without projecting; a dirt detecting light emitting element provided in the housing and transmitting light to the light receiving portion through the transparent member and the light receiving glass. And a flame detector.
【請求項2】 請求項1において、 上記炎検知器が所定の壁面に設置されているときに、上
記受光ガラスの中心よりも下側に、上記汚れ検知用発光
素子が設置されていることを特徴とする炎検知器。
2. The method according to claim 1, wherein when the flame detector is installed on a predetermined wall surface, the dirt detecting light emitting element is installed below a center of the light receiving glass. Features a flame detector.
【請求項3】 請求項1において、 上記汚れ検知用発光素子から照射される光の光軸と、上
記試験窓の入射面とがほぼ直交するように、上記試験窓
が形成されていることを特徴とする炎検知器。
3. The test window according to claim 1, wherein the test window is formed such that an optical axis of light emitted from the dirt detecting light emitting element and an incident surface of the test window are substantially orthogonal to each other. Features a flame detector.
【請求項4】 平面部を具備する筐体と;上記平面部か
ら突出して上記筐体に固定されている受光ガラスと;上
記受光ガラスの内部に設けられている受光部と;上記筐
体に設けられている試験窓と;上記試験窓と上記受光ガ
ラスとを通して、上記受光部に光を送る汚れ検知用発光
素子と;を有し、上記汚れ検知用発光素子と、上記試験
窓とが、上記受光ガラスの中心よりも下側に配置されて
いることを特徴とする炎検知器。
A housing provided with a flat portion; a light-receiving glass projecting from the flat portion and fixed to the housing; a light-receiving portion provided inside the light-receiving glass; A test window provided; and a dirt detection light-emitting element that transmits light to the light receiving unit through the test window and the light-receiving glass; and the dirt detection light-emitting element and the test window, A flame detector, wherein the flame detector is arranged below a center of the light receiving glass.
JP2001101618A 2001-03-30 2001-03-30 Flame detector Expired - Fee Related JP3966537B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001101618A JP3966537B2 (en) 2001-03-30 2001-03-30 Flame detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001101618A JP3966537B2 (en) 2001-03-30 2001-03-30 Flame detector

Publications (2)

Publication Number Publication Date
JP2002298242A true JP2002298242A (en) 2002-10-11
JP3966537B2 JP3966537B2 (en) 2007-08-29

Family

ID=18954905

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001101618A Expired - Fee Related JP3966537B2 (en) 2001-03-30 2001-03-30 Flame detector

Country Status (1)

Country Link
JP (1) JP3966537B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006125935A1 (en) * 2005-05-27 2006-11-30 Thorn Security Limited Detector
KR101021058B1 (en) 2010-08-17 2011-03-15 주식회사 창성에이스산업 Self-Diagnostic Flame Detector
US7956329B2 (en) 2005-05-27 2011-06-07 Thorn Security Limited Flame detector and a method
KR101464131B1 (en) 2014-07-24 2014-11-21 주식회사 레존텍 Self-diagnostic flame detector
JP2017224183A (en) * 2016-06-16 2017-12-21 ホーチキ株式会社 Fire detector
JP2019194826A (en) * 2018-04-26 2019-11-07 ホーチキ株式会社 Flame detector

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006125935A1 (en) * 2005-05-27 2006-11-30 Thorn Security Limited Detector
US7948628B2 (en) 2005-05-27 2011-05-24 Thorn Security Limited Window cleanliness detection system
US7956329B2 (en) 2005-05-27 2011-06-07 Thorn Security Limited Flame detector and a method
KR101021058B1 (en) 2010-08-17 2011-03-15 주식회사 창성에이스산업 Self-Diagnostic Flame Detector
KR101464131B1 (en) 2014-07-24 2014-11-21 주식회사 레존텍 Self-diagnostic flame detector
JP2017224183A (en) * 2016-06-16 2017-12-21 ホーチキ株式会社 Fire detector
JP2019194826A (en) * 2018-04-26 2019-11-07 ホーチキ株式会社 Flame detector
JP7057228B2 (en) 2018-04-26 2022-04-19 ホーチキ株式会社 Flame detector

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