JPH1183642A - Temperature switch - Google Patents
Temperature switchInfo
- Publication number
- JPH1183642A JPH1183642A JP9238251A JP23825197A JPH1183642A JP H1183642 A JPH1183642 A JP H1183642A JP 9238251 A JP9238251 A JP 9238251A JP 23825197 A JP23825197 A JP 23825197A JP H1183642 A JPH1183642 A JP H1183642A
- Authority
- JP
- Japan
- Prior art keywords
- light
- temperature
- detection unit
- optical fiber
- switch
- 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
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、温度を検出して動
作する温度スイッチに関し、さらに詳しくは、例えば、
高電圧の受電設備の温度や地中に埋設されて路面の温度
を検出するような用途に好適な温度スイッチに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature switch which operates by detecting a temperature.
The present invention relates to a temperature switch suitable for use in detecting the temperature of a high-voltage power receiving facility or the temperature of a road surface buried in the ground.
【０００２】[0002]
【従来の技術】従来、温度を検出して動作する温度スイ
ッチには、その温度検出部に、熱電対、測温抵抗体ある
いはサーミスタなどを使用するが、このような電気的に
温度を検出する構成の温度スイッチでは、電線を使用す
るために、例えば、高電圧の受電設備の端子台などの温
度を検出するような用途では、電線に対して高耐圧の絶
縁処理を施さねばならず、高価になるとともに、定期的
な耐圧検査等のメンテナンスが必要となり、また、例え
ば、路面の温度を検出して動作させるために、地中に埋
設するような用途では、メンテナンスが容易でないの
で、電線に対して高度な防水処理が必要となり、コスト
の高いものとなる。2. Description of the Related Art Conventionally, a temperature switch which operates by detecting a temperature uses a thermocouple, a resistance temperature detector, a thermistor, or the like for a temperature detecting portion. In the temperature switch of the configuration, since the electric wire is used, for example, in applications such as detecting the temperature of a terminal block of a high-voltage power receiving facility, the electric wire must be subjected to a high withstand voltage insulation treatment, which is expensive. In addition, regular maintenance such as pressure resistance inspection is required, and for example, in applications such as burying in the ground to detect and operate the temperature of the road surface, maintenance is not easy. On the other hand, a high degree of waterproofing is required, and the cost is high.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、上述の技術
的課題に鑑みて為されたものであって、絶縁処理を不要
にするとともに、防水処理も簡単な安価な温度スイッチ
を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above technical problems, and an object of the present invention is to provide an inexpensive temperature switch which eliminates the need for an insulation process and can be easily waterproofed. With the goal.
【０００４】[0004]
【課題を解決するための手段】本発明では、上述の目的
を達成するために、次のように構成している。In order to achieve the above-mentioned object, the present invention is configured as follows.
【０００５】すなわち、請求項１に係る本発明は、投光
素子からの光を、光ファイバを介して投光する一方、受
光面で受光した光を、光ファイバを介して受光素子に与
える温度スイッチであって、温度変化によって前記受光
面への光を遮光する遮光手段を設けている。That is, according to the first aspect of the present invention, while the light from the light emitting element is projected through an optical fiber, the light received on the light receiving surface is given to the light receiving element through the optical fiber. A switch, provided with a light blocking means for blocking light to the light receiving surface by a temperature change.
【０００６】請求項２に係る本発明は、請求項１の発明
において、前記投光素子および前記受光素子を有する本
体と、前記受光面および前記投光素子からの光を投光す
る投光面を有する検出部とを前記光ファイバで接続し、
前記遮光手段は、前記検出部に対向配置された感温部材
を備え、該感温部材は、温度変化によって前記検出部か
ら投光される光に対する反射率が変化するものである。According to a second aspect of the present invention, in the first aspect, a main body having the light emitting element and the light receiving element, and a light emitting surface for emitting light from the light receiving surface and the light emitting element. And a detection unit having the optical fiber,
The light-shielding means includes a temperature-sensitive member disposed to face the detection unit, and the temperature-sensitive member changes reflectance of light emitted from the detection unit according to a temperature change.
【０００７】請求項３に係る本発明は、請求項１の発明
において、前記投光素子および前記受光素子を有する本
体と、前記受光面および前記投光素子からの光を投光す
る投光面を有する検出部とを前記光ファイバで接続し、
前記遮光手段は、前記検出部に対向配置された反射部材
と、該反射部材よりも前記検出部側に配置され、かつ、
温度変化によって前記検出部から投光される光に対する
透過率が変化する感温部材とを備えている。According to a third aspect of the present invention, in the first aspect, a main body having the light emitting element and the light receiving element, and a light emitting surface for emitting light from the light receiving surface and the light emitting element. And a detection unit having the optical fiber,
The light-shielding unit is a reflection member disposed to face the detection unit, and is disposed closer to the detection unit than the reflection member, and
A temperature-sensitive member whose transmittance with respect to light emitted from the detection unit changes according to a temperature change.
【０００８】請求項４に係る本発明は、請求項１ないし
３の発明において、前記検出部および前記感温部材を保
持する保持体を有するものである。According to a fourth aspect of the present invention, in the first to third aspects of the present invention, there is provided a holder for holding the detecting section and the temperature sensing member.
【０００９】請求項５に係る本発明は、請求項１ないし
４の発明において、前記感温部材は、前記保持体の内部
に収納され、該保持体の外周には、該保持体を、温度を
検出すべき検出対象物に螺合装着するためのネジ部が形
成されている。According to a fifth aspect of the present invention, in the first to fourth aspects of the present invention, the temperature sensing member is housed inside the holder, and the outer periphery of the holder is provided with the temperature. A screw portion for screwing and mounting the object to be detected is formed.
【００１０】請求項１に係る本発明によれば、温度変化
によって受光素子への光が遮光されるので、温度スイッ
チとして動作させることができる一方、投光および受光
を、光ファイバを介してそれぞれ行うので、従来の電気
的な温度スイッチのような電線を使用する必要がなく、
例えば高電圧の受電設備の端子台などの温度を検出する
ような用途でも、高耐圧の絶縁処理を施す必要がなく、
定期的な耐圧検査等のメンテナンスも不要となり、ま
た、例えば、地中に埋設するような用途でも、従来の電
気的な温度スイッチに比べて防水処理が簡単である。According to the first aspect of the present invention, since the light to the light receiving element is blocked by the temperature change, the light receiving element can be operated as a temperature switch. So there is no need to use wires like traditional electrical temperature switches,
For example, even in applications such as detecting the temperature of terminal blocks of high-voltage power receiving equipment, there is no need to perform high-voltage insulation treatment,
Maintenance such as regular pressure test is not required, and waterproofing is simpler than that of a conventional electric temperature switch, for example, in an application such as burying underground.
【００１１】請求項２に係る本発明によれば、検出部に
光ファイバを介して接続された本体を、例えば、高電圧
の端子台や荷重がかかる路面などの温度検出対象物から
離れた位置に配置でき、また、感温部材の反射率が温度
によって変化することにより、温度スイッチとして動作
させることができる。According to the second aspect of the present invention, the main body connected to the detecting section via the optical fiber is located at a position distant from a temperature detection target such as a high-voltage terminal block or a road surface to which a load is applied. In addition, when the reflectance of the temperature-sensitive member changes with temperature, it can be operated as a temperature switch.
【００１２】請求項３に係る本発明によれば、検出部に
光ファイバを介して接続された本体を、例えば、高電圧
の端子台や荷重がかかる路面などの温度検出対象物から
離れた位置に配置でき、また、感温部材の透過率が温度
によって変化することにより、温度スイッチとして動作
させることができる。According to the third aspect of the present invention, the main body connected to the detecting section via the optical fiber is located at a position distant from a temperature detection target such as a high-voltage terminal block or a road surface to which a load is applied. The temperature-sensitive member can be operated as a temperature switch by changing the transmittance of the temperature-sensitive member according to the temperature.
【００１３】請求項４に係る本発明によれば、検出部お
よび感温部材を保持する保持体を備えているので、温度
検出対象物に、前記検出部および感温部材を一体として
設置できることになる。According to the fourth aspect of the present invention, since the holder for holding the detecting portion and the temperature-sensitive member is provided, the detecting portion and the temperature-sensitive member can be integrally installed on the temperature detection target. Become.
【００１４】請求項５に係る本発明によれば、保持体の
外周には、温度検出対象物に螺合装着するためのネジ部
が形成されているので、容易に設置できることになる。According to the fifth aspect of the present invention, since the screw portion for screwing and mounting to the temperature detection target is formed on the outer periphery of the holder, the holder can be easily installed.
【００１５】[0015]
【発明の実施の形態】以下、図面によって本発明の実施
の形態について詳細に説明する。Embodiments of the present invention will be described below in detail with reference to the drawings.
【００１６】（実施の形態１）図１は、本発明の一つの
実施の形態に係る温度スイッチの概略構成図であり、こ
の実施の形態の温度スイッチ１は、高電圧の受電設備の
端子台における銅板２からなる配線部分の温度を検出す
るものである。(Embodiment 1) FIG. 1 is a schematic configuration diagram of a temperature switch according to one embodiment of the present invention. The temperature switch 1 of this embodiment is a terminal block of a high-voltage power receiving facility. In this case, the temperature of the wiring portion made of the copper plate 2 is detected.
【００１７】何万あるいは何十万ボルトといった超高圧
の受電設備においては、大電流が流れる高圧電線を、端
子台にネジ止めしているが、高圧大電流のために端子台
が振動してネジが緩み、ネジが緩むと、抵抗が増大し
て、さらに温度が上昇し、絶縁が溶けたりするという不
具合が発生するので、かかる高圧電流が流れる部分の温
度が、一定温度以上になったことを検出して適宜の措置
をとる必要があり、このために、温度スイッチが使用さ
れるものである。In an ultra-high voltage power receiving facility of tens of thousands or hundreds of thousands of volts, a high-voltage electric wire through which a large current flows is screwed to the terminal block. If the screw is loosened and the screw is loosened, the resistance will increase, the temperature will further rise, and the insulation will melt. It is necessary to detect and take appropriate action, for which a temperature switch is used.
【００１８】この実施の形態の温度スイッチ１は、投光
素子および受光素子などが内蔵されたスイッチ本体３
と、投光素子からの光を投光する投光面および光を受光
する受光面を有する検出部４と、この検出部４と前記ス
イッチ本体３とを接続する光ファイバ５と、温度変化に
よって検出部４の受光面への光を遮光する遮光手段６
と、検出部４および遮光手段６を保持する保持体として
のアダプタ７とを備えている。A temperature switch 1 according to this embodiment is a switch body 3 having a built-in light-emitting element and a light-receiving element.
A detecting unit 4 having a light projecting surface for projecting light from the light projecting element and a light receiving surface for receiving light, an optical fiber 5 for connecting the detecting unit 4 and the switch body 3, Light blocking means 6 for blocking light to the light receiving surface of the detection unit 4
And an adapter 7 as a holder for holding the detection unit 4 and the light shielding unit 6.
【００１９】スイッチ本体３、光ファイバ５および検出
部４からなる構成は、いわゆる、光ファイバ式の光電ス
イッチと同様の構成であり、スイッチ本体３の投光素子
からの光が、光ファイバ５を介して検出部４に至り、こ
の検出部４の投光面から投光される一方、検出部４の受
光面で受光された光が、光ファイバ５を介してスイッチ
本体３の受光素子に至るように構成されており、スイッ
チ本体３には、投光素子および受光素子の他に、受光素
子の出力を増幅検波あるいは波形整形する回路や出力回
路等が内蔵されている。The structure composed of the switch body 3, the optical fiber 5, and the detection unit 4 is the same as that of a so-called optical fiber type photoelectric switch. Light from the light emitting element of the switch body 3 is transmitted through the optical fiber 5. The light reaches the detection unit 4 via the light-emitting surface of the detection unit 4, and the light received by the light-receiving surface of the detection unit 4 reaches the light-receiving element of the switch body 3 via the optical fiber 5. The switch main body 3 includes a circuit for amplifying and detecting or shaping the output of the light receiving element, an output circuit, and the like, in addition to the light emitting element and the light receiving element.
【００２０】検出部４およびアダプタ７は、金属、合成
樹脂あるいはその他の材料から構成されるが、アダプタ
７は、熱伝導性の良好な金属材料であるのが好ましい。The detecting section 4 and the adapter 7 are made of metal, synthetic resin or other material. The adapter 7 is preferably made of a metal material having good heat conductivity.
【００２１】遮光手段６は、透明な筒体８の一端側に反
射部材としての円形のミラー９が配置される一方、他端
側に、温度変化によって透過率が変化する円形の感温部
材１０が配置されて構成されており、アダプタ７の内部
に収納されており、感温部材１０が、検出部４側に位置
し、ミラー９がそれに対向するように配置されている。The light shielding means 6 has a circular mirror 9 as a reflection member disposed at one end of a transparent cylindrical body 8 and a circular temperature sensing member 10 whose transmittance changes with temperature change at the other end. Are arranged inside the adapter 7, the temperature sensing member 10 is located on the detection unit 4 side, and the mirror 9 is arranged so as to face the same.
【００２２】感温部材１０は、検出すべき温度未満で
は、透明であって、検出部４からの光をミラー９側へ透
過させる一方、ミラー９からの反射光を、検出部４側へ
透過させ、検出すべき温度に達すると、白濁して透過率
が低下し、検出部４からの光をミラー９側へ透過させな
いものであり、例えば、低温域では、相溶して透明であ
るが、高温では、相分離が進んで不透明となるような高
分子ブレンド組成物やその他周知の材料から構成され、
検出すべき温度に応じて組成が適宜選択される。The temperature sensing member 10 is transparent at a temperature lower than the temperature to be detected, and transmits light from the detecting unit 4 to the mirror 9 while transmitting reflected light from the mirror 9 to the detecting unit 4. When the temperature reaches the temperature to be detected, it becomes cloudy and the transmittance decreases, and the light from the detection unit 4 is not transmitted to the mirror 9 side. , At elevated temperatures, composed of a polymer blend composition or other well-known materials that undergoes phase separation and becomes opaque,
The composition is appropriately selected according to the temperature to be detected.
【００２３】検出部４は、円柱状であって、その外周に
は、アダプタ７のネジ孔に螺合装着するための雄ネジ４
ａが形成されており、アダプタ７に収納された遮光手段
６に、その先端の投光面および受光面が臨むように装着
される。The detecting section 4 has a cylindrical shape, and has a male screw 4 on its outer periphery for screwing into a screw hole of the adapter 7.
a is formed, and is mounted on the light shielding means 6 housed in the adapter 7 so that the light projecting surface and the light receiving surface at the ends thereof face.
【００２４】検出部４および遮光手段６を保持する円柱
状のアダプタ７は、その外周に雄ネジ７ａが形成されて
おり、これによって、アダプタ７を、温度検出対象物で
ある銅板２に形成されたネジ孔に螺合装着するものであ
る。The cylindrical adapter 7 for holding the detecting portion 4 and the light shielding means 6 has a male screw 7a formed on the outer periphery thereof, whereby the adapter 7 is formed on the copper plate 2 which is the object of temperature detection. It is screwed into the screw hole.
【００２５】以上の構成を有する温度スイッチ１では、
高電圧の温度検出対象物である銅板２の温度が、検出す
べき温度未満であるときには、銅板２にアダプタ７を介
して組み込まれた遮光手段６の感温部材１０は、透明な
状態にあって遮光することなく、スイッチ本体３の投光
素子からの光は、光ファイバ５を介して検出部４から投
光され、ミラー９で反射されて検出部４で受光された光
は、光ファイバ５を介してスイッチ本体３の受光素子で
受光されることになり、温度スイッチ１は、オン状態と
なっている。In the temperature switch 1 having the above configuration,
When the temperature of the copper plate 2, which is a high-voltage temperature detection target, is lower than the temperature to be detected, the temperature-sensitive member 10 of the light shielding means 6 incorporated into the copper plate 2 via the adapter 7 is in a transparent state. The light from the light emitting element of the switch body 3 is projected from the detection unit 4 through the optical fiber 5 without being blocked by light, and the light reflected by the mirror 9 and received by the detection unit 4 is reflected by the optical fiber. 5, the light is received by the light receiving element of the switch body 3, and the temperature switch 1 is turned on.
【００２６】銅板２の温度が、検出すべき温度以上とな
って、遮光手段６の感温部材１０の温度も検出すべき温
度以上になると、感温部材１０が白濁して透過率が低下
して遮光し、スイッチ本体３の投光素子からの光は、光
ファイバ５を介して検出部４から投光されるが、感温部
材１０で遮光され、このため、検出部４、したがって、
スイッチ本体３の受光素子では、光が受光されず、温度
スイッチ１がオフ状態となり、銅板２の温度が検出すべ
き温度以上になったことが検出され、このスイッチ本体
３の検出出力によって温度の上昇が報知されるといった
適宜の措置がとられることになる。When the temperature of the copper plate 2 becomes higher than the temperature to be detected and the temperature of the temperature-sensitive member 10 of the light shielding means 6 becomes higher than the temperature to be detected, the temperature-sensitive member 10 becomes cloudy and the transmittance decreases. The light from the light emitting element of the switch body 3 is emitted from the detection unit 4 via the optical fiber 5, but is shielded by the temperature-sensitive member 10, so that the detection unit 4, and therefore,
The light receiving element of the switch body 3 does not receive light, the temperature switch 1 is turned off, and it is detected that the temperature of the copper plate 2 is higher than the temperature to be detected. Appropriate measures will be taken, such as being notified of the rise.
【００２７】このように光学的に温度を検出するので、
電気的に温度を検出する従来例のように、高耐圧の絶縁
処理を施す必要がなく、また、定期的な耐圧検査の必要
もなく、コストを低減することができる。Since the temperature is detected optically as described above,
Unlike the conventional example in which the temperature is electrically detected, there is no need to perform a high-breakdown-voltage insulating process, and there is no need to perform a regular withstand voltage test, so that the cost can be reduced.
【００２８】また、例えば、路面の温度を検出するため
に地中に埋設するような場合にも、電気的に温度を検出
する従来例に比べて、防水処理が簡単であり、コストの
低減を図ることができる。Also, for example, even when the device is buried underground to detect the temperature of a road surface, the waterproofing process is simpler and the cost can be reduced as compared with the conventional example in which the temperature is electrically detected. Can be planned.
【００２９】（実施の形態２）図２は、本発明の他の実
施の形態に係る温度スイッチ１1の概略構成図であり、
上述の実施の形態に対応する部分には、同一の参照符号
を付す。[0029] Second Embodiment FIG. 2 is a schematic block diagram of a temperature switch 1 1 according to another embodiment of the present invention,
Portions corresponding to the above-described embodiment are denoted by the same reference numerals.
【００３０】上述の実施の形態では、遮光手段６の感温
部材１０は、検出すべき温度になると、透過率が低下し
て遮光するものであったけれども、この実施の形態の遮
光手段は、検出すべき温度になると、反射率が低下して
遮光する感温部材１０1によって構成されている。In the above-described embodiment, the temperature-sensitive member 10 of the light-shielding means 6 has a structure in which, when the temperature to be detected is reached, the transmittance is reduced to shield the light. becomes the temperature to be detected, reflectance is constituted by the temperature-sensitive member 10 1 for shielding decreases.
【００３１】この実施の形態の感温部材１０1は、検出
部４の投光面および受光面に対向するように、アダプタ
７1の端面に、接着剤等の適宜手段によって取り付けら
れ、この感温部材１０1は、検出すべき温度になると、
その色が変わって反射率が低下するものであり、温度に
よって色が変化する従来周知の感応色素材料で構成され
ている。The temperature-sensitive element 10 1 of this embodiment, as opposed to the light projecting surface and the receiving surface of the detecting section 4, the end surface of the adapter 71, attached by a suitable means such as an adhesive, this sensitive temperature member 10 1, at a to be detected temperature,
The color changes and the reflectivity decreases, and is made of a conventionally known sensitive dye material whose color changes with temperature.
【００３２】この実施の形態の温度スイッチ１1では、
高電圧の温度検出対象物である銅板２の温度が、検出す
べき温度未満であるときには、遮光手段を構成する感温
部材１０1の反射率は、高く遮光することなく、スイッ
チ本体３の投光素子からの光は、光ファイバ５を介して
検出部４から投光され、感温部材１０1で反射されて検
出部４で受光された光は、光ファイバ５を介してスイッ
チ本体３の受光素子で受光されることになり、温度スイ
ッチ１1は、オン状態となっている。[0032] In the temperature switch 1 of this embodiment,
Temperature of the copper plate 2 which is a temperature detection target high voltage, when it is less than be detected temperatures, the reflectance of the temperature-sensitive member 10 1 constituting the light-shielding means, without increasing light-shielding, throw the switch body 3 light from the light element is projected from the detection unit 4 via the optical fiber 5, the light received by the detection unit 4 is reflected by the temperature sensitive member 10 1, the switch body 3 through the optical fiber 5 The light is received by the light receiving element, and the temperature switch 11 is turned on.
【００３３】この実施の形態では、上述の実施の形態に
比べて、遮光手段の構成が簡素化される。In this embodiment, the structure of the light shielding means is simplified as compared with the above embodiment.
【００３４】その他の構成および効果は、上述の実施の
形態と同様である。Other configurations and effects are the same as those of the above-described embodiment.
【００３５】（その他の実施の形態）上述の各実施の形
態では、検出すべき温度に達したときに、遮光するよう
に構成したけれども、本発明の他の実施の形態として、
検出すべき温度未満で遮光するように構成してもよい。(Other Embodiments) In each of the above embodiments, light is blocked when the temperature to be detected is reached. However, as another embodiment of the present invention,
You may comprise so that light may be shielded below the temperature to be detected.
【００３６】本発明の他の実施の形態として、感温部材
を挟んで、その両側に投光面および受光面をそれぞれ配
置する構成としてもよい。In another embodiment of the present invention, a light emitting surface and a light receiving surface may be arranged on both sides of a temperature sensing member.
【００３７】上述の各実施の形態では、アダプタを設け
たけれども、本発明の他の実施の形態として、アダプタ
を省略して検出部および遮光手段を適宜設置してもよ
い。In each of the above embodiments, an adapter is provided. However, as another embodiment of the present invention, the adapter may be omitted and the detection unit and the light shielding means may be provided as appropriate.
【００３８】[0038]
【発明の効果】以上のように本発明によれば、光学的に
温度を検出して動作させるので、従来の電気的な温度ス
イッチのような電線を使用する必要がなく、例えば高電
圧の受電設備の端子台などの温度を検出するような用途
でも、高耐圧の絶縁処理を施す必要がなく、定期的な耐
圧検査等のメンテナンスも不要となり、また、例えば、
地中に埋設するような用途でも、従来の電気的な温度ス
イッチに比べて防水処理が簡単であり、コストを低減で
きる。As described above, according to the present invention, since the operation is performed by optically detecting the temperature, it is not necessary to use an electric wire such as a conventional electric temperature switch. Even in applications such as detecting the temperature of terminal blocks of equipment, it is not necessary to perform high-voltage insulation treatment, and maintenance such as periodic pressure inspection is not required.
Even in applications buried underground, waterproofing is easier than conventional electric temperature switches, and costs can be reduced.
【００３９】また、検出部に光ファイバを介して接続さ
れた本体を、例えば、高電圧の端子台や荷重がかかる路
面などの温度検出対象から離れた位置に配置することで
き、高電圧や荷重の影響を受けないようにすることがで
きる。Further, the main body connected to the detection unit via an optical fiber can be arranged at a position distant from a temperature detection target such as a high-voltage terminal block or a road surface to which a load is applied. Can be prevented from being affected.
【図１】本発明の一つの実施の形態の構成図である。FIG. 1 is a configuration diagram of one embodiment of the present invention.
【図２】本発明の他の実施の形態の構成図である。FIG. 2 is a configuration diagram of another embodiment of the present invention.
１，１1 温度スイッチ ３ スイッチ本体 ４ 検出部 ５ 光ファイバ ６ 遮光手段 ８ アダプタ（保
持体） １０，１０1 感温部材1, 1 1 Temperature switch 3 Switch body 4 Detector 5 Optical fiber 6 Light blocking means 8 Adapter (holding body) 10, 10 1 Temperature sensitive member
Claims (5)
て投光する一方、受光面で受光した光を、光ファイバを
介して受光素子に与える温度スイッチであって、 温度
変化によって前記受光面への光を遮光する遮光手段を設
けたことを特徴とする温度スイッチ。1. A temperature switch for projecting light from a light projecting element via an optical fiber and providing light received on a light receiving surface to the light receiving element via an optical fiber. A temperature switch, comprising: a light blocking means for blocking light to a light receiving surface.
る本体と、前記受光面および前記投光素子からの光を投
光する投光面を有する検出部とを前記光ファイバで接続
し、 前記遮光手段は、前記検出部に対向配置された感温部材
を備え、該感温部材は、温度変化によって前記検出部か
ら投光される光に対する反射率が変化するものである請
求項１記載の温度スイッチ。2. A main body having the light emitting element and the light receiving element, and a detection unit having a light receiving surface and a light emitting surface for emitting light from the light emitting element are connected by the optical fiber, 2. The light-shielding means includes a temperature-sensitive member disposed to face the detection unit, wherein the temperature-sensitive member changes reflectivity to light emitted from the detection unit due to a change in temperature. Temperature switch.
る本体と、前記受光面および前記投光素子からの光を投
光する投光面を有する検出部とを前記光ファイバで接続
し、 前記遮光手段は、前記検出部に対向配置された反射部材
と、該反射部材よりも前記検出部側に配置され、かつ、
温度変化によって前記検出部から投光される光に対する
透過率が変化する感温部材とを備える請求項１記載の温
度スイッチ。3. A main body having the light emitting element and the light receiving element, and a detector having a light receiving surface and a light emitting surface for emitting light from the light emitting element are connected by the optical fiber; The light-shielding unit is a reflection member disposed to face the detection unit, and is disposed closer to the detection unit than the reflection member, and
The temperature switch according to claim 1, further comprising: a temperature-sensitive member whose transmittance with respect to light emitted from the detection unit changes according to a temperature change.
る保持体を有する請求項１ないし３のいずれかに記載の
温度スイッチ。4. The temperature switch according to claim 1, further comprising a holder for holding said detection unit and said temperature sensing member.
納され、該保持体の外周には、該保持体を、温度を検出
すべき検出対象物に螺合装着するためのネジ部が形成さ
れる請求項１ないし４のいずれかに記載の温度スイッ
チ。5. The temperature-sensitive member is housed inside the holder, and a threaded portion is provided on an outer periphery of the holder for screwing the holder to a detection target whose temperature is to be detected. The temperature switch according to any one of claims 1 to 4, wherein the temperature switch is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9238251A JPH1183642A (en) | 1997-09-03 | 1997-09-03 | Temperature switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9238251A JPH1183642A (en) | 1997-09-03 | 1997-09-03 | Temperature switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1183642A true JPH1183642A (en) | 1999-03-26 |
Family
ID=17027406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9238251A Pending JPH1183642A (en) | 1997-09-03 | 1997-09-03 | Temperature switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1183642A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606253A (en) * | 2015-12-19 | 2016-05-25 | 长安大学 | Total depth type pavement temperature monitoring device |
-
1997
- 1997-09-03 JP JP9238251A patent/JPH1183642A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606253A (en) * | 2015-12-19 | 2016-05-25 | 长安大学 | Total depth type pavement temperature monitoring device |
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