JP2004355867A - Photosensor type switch - Google Patents

Photosensor type switch Download PDF

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Publication number
JP2004355867A
JP2004355867A JP2003150049A JP2003150049A JP2004355867A JP 2004355867 A JP2004355867 A JP 2004355867A JP 2003150049 A JP2003150049 A JP 2003150049A JP 2003150049 A JP2003150049 A JP 2003150049A JP 2004355867 A JP2004355867 A JP 2004355867A
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Japan
Prior art keywords
light
type switch
sensor type
optical sensor
light receiving
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JP2003150049A
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Japanese (ja)
Inventor
Osamu Matsumoto
修 松本
Hiroshi Matsuda
宏 松田
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Inax Corp
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Inax Corp
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Publication of JP2004355867A publication Critical patent/JP2004355867A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a photosensor type switch which does not require a strict position-matching as for the optical sensor type switch in which electric appliances such as a demisting heater and an illumination fixture are switching on/off controlled by being mounted on the rear face of a mirror body or the like of a washstand and by detecting a hand put close to the surface side of the mirror body. <P>SOLUTION: As for a light detection part which outputs an object detection signal for actioning a prescribed appliance, one light receiving element 12 is placed in the center, and a plurality of light projection elements 13 are arranged around it. By this, when the photosensor type switch is, for example, mounted on the rear face of the mirror body M, even if there occurs a slight position deviation between a light transmission part 20 and a light detection part, any of the light projected from the projection elements 13 passes through the light transmission part 20 and is irradiated to the detected subjects without fail, and because the reflected light is surely captured by a light receiving element 12, object detection can be carried out surely. As a result, because it becomes unnecessary to strictly align the photosensor type switch, the burden on an operator is reduced. Furthermore, because it is not necessary to widen an opening area of the light transmission part, neither designability or appearance is spoiled. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、例えば洗面化粧台の鏡体などの裏面側に取り付けられ、鏡体の表面側に近づけた手を検知することで、防曇ヒータや照明器具などの電気器具をON・OFF制御するようになされた光センサー式スイッチに関する。
【0002】
【従来の技術】
化粧室や浴室など水が多く使われる室内環境では、鏡体の防曇ヒータや照明装置などの電気器具のON・OFFを制御するスイッチを光センサー式スイッチとし、これを水のかかりにくい鏡体の裏面側に配置することが提案されている。例えば図6に示す洗面化粧台Kでは、鏡体Mに光透過部を形成してセンサー領域Sとなし、ここに表面側から手を近づけると、これをセンサー領域Sの裏面側に配置した光センサーが検知して検知信号を出力し、この検知信号に基づいて、防曇ヒータや照明器具等をON・OFF動作させるように設定されている。
【0003】
また、電気器具のON・OFFに合わせて鏡体Mに設けたセンサー領域Sを発光させることにより、電気器具の動作状況を確認しやすくした光センサー式スイッチの一例が特許文献1に記載されている。その構造は、図7に示す如く、鏡体Mの一部分に、銀膜2が形成されていないガラス板1だけの光透過部30を設けてセンサー領域Sとなし、その裏面側に、光電式センサーである赤外受発光素子31と、作動確認用表示灯としてエレクトロルミネセンス発光素子(EL発光素子)32とが配置されている。センサー領域Sは光が透過可能なので、指先40等をセンサー領域Sに接近させると、これを赤外受発光素子31が検知して検知信号を出力し、防曇ヒータ等をON動作させる。それと同時にEL発光素子32を点灯させてセンサー領域Sを発光させ、防曇ヒータ等がON動作中であることを視認できるよう表示する。上記ON動作中に、再度、指先40等をセンサー領域Sに接近させれば、これを赤外受発光素子31が検知して防曇ヒータ等の動作を停止させると同時に、EL発光素子32を消灯させる。これにより、防曇ヒータ等が動作停止中であることが視認可能に表示される。このように特許文献1に記載された光センサー式スイッチは、非接触でスイッチを作動させることができると共に、防曇ヒータのON・OFF状態を視覚的に確認できるという効果を発揮するとされている。
【0004】
【特許文献1】
実開平6−29463号公報
【0005】
【発明が解決しようとする課題】
前記特許文献1の光センサー式スイッチでセンサー領域Sに接近する手40等を確実に検出するためには、赤外受発光素子31から投射した光が、センサー領域Sの前方に位置する手40等に正確に照射される必要がある。すなわち、赤外受発光素子31の光軸が、光透過部30のほぼ中央を通過するようにしなくてはならない。このため、従来の光センサー式スイッチは、鏡体M等の裏に取り付ける際の位置決めを慎重に行う必要があり、作業者に負担をかけるものであった。また、光センサー式スイッチの取付位置が不適切になったときには、赤外受発光素子31の光軸が光透過部30からはずれて、物体検知が不正確になったり不可能になったりするおそれがあった。なお上記問題を避けるため、光透過部30の面積を広く形成することも考えられるが、この場合は意匠性・美観性を損なうという、別の問題を引き起こす。
【0006】
【課題を解決するための手段】
前記従来の問題を解決するために本発明が採用した光センサー式スイッチの特徴とするところは、投光素子と受光素子とから成る光検知部を備え、当該光検知部から出力される物体検知信号に基づき所定機器をオン・オフ動作させるようになされた光センサー式スイッチにおいて、前記光検知部は受光素子の周囲に複数の投光素子を配置した構成を有しているものとしたことである。これにより本発明に係る光センサー式スイッチは、受光素子の周囲に複数の投光素子が配置されているので、例えば鏡体の裏面へ取り付けるに際し、鏡体に形成した光透過部と光検知部との間で多少の位置ずれが生じたとしても、いずれかの投光素子から投射された光が光透過部を通過して、必ず検知対象物に光照射されるようにできるから、物体検知を確実に行うことができる。その結果、光センサー式スイッチの位置合わせを厳密にする必要がなくなる。
【0007】
なお本発明の光センサー式スイッチにおける光検知部は、投光素子の周囲に複数の受光素子を配置した構成としてもよく、あるいは、複数の受光素子と複数の投光素子とを規則的に配置した構成とすることも可能である。
【0008】
さらに本発明の光センサー式スイッチは、基板上に、受光素子及び投光素子から成る光検知部と共に、該光検知部から出力される物体検知信号に基づきオン・オフ動作するようになされた発光素子を設けたものとすることができる。かかる構成により、物体検知に応じて発光・消灯する発光素子を備えるから、オン・オフ制御する機器の動作状況を視覚的に明示するのが容易となる。
【0009】
ところで本発明の光センサー式スイッチは、取付対象部材に形成した光透過部の裏面側に取り付けて、取付対象部材の表面側に接近する物体を検知することにより、所定機器をオン・オフ動作させるために用いられる。上記取付対象部材とは、洗面化粧台やミラーキャビネットにおける鏡体のほか、陶板、プラスチック板、金属板などが挙げられる。
【0010】
【発明の実施の形態】
図1は、本発明に係る光センサー式スイッチ10を、洗面化粧台Kに適用した実施形態を示すものである。本実施形態では、洗面化粧台Kの鏡体Mにおける適当箇所をセンサー領域S及び発光領域Tとなし、その裏面側に光検知部と発光素子とを備える光センサー式スイッチ10を配置する。そして、センサー領域Sに接近した手指を検知することにより、制御回路Cを通じ、鏡体Mの裏面又は内部に配設した防曇ヒータHや、鏡体M上方に配置した照明装置L等の各種電気器具を動作あるいは停止させると共に、これら電気器具の動作状況に応じ、発光領域Tを発光させるようになされている。なお図面に例示する如く、二個の光センサー式スイッチ10,10を鏡体Mの裏面に取り付け、一方の光センサー式スイッチ10を例えば防曇ヒータH用スイッチ、もう一方の光センサー式スイッチ10を例えば照明装置L用スイッチとすることも可能である。また、制御回路Cは、照明装置Lのケースやキャビネットの内部等に収納することが可能である。
【0011】
図2及び図3に示す如く、本例の光センサー式スイッチ10は、基板11の上に配置した、1個の受光素子12及びこれを取り巻くように配置した複数個の投光素子13から成る光検知部と、複数個のLED等の発光素子14と、受光素子12から出力される受光信号を増幅し物体検知信号とする信号増幅器15と、上記受光素子12・投光素子13・発光素子14等への電力供給端子及び物体検知信号の出力端子を兼ねるコネクタ16などから構成されている。受光素子12としては光電式センサーが用いられ、投光素子13としては赤外LEDが用いられる。また発光素子14には、可視LEDや紫外LEDが用いられる。
【0012】
他方、前記光センサー式スイッチ10を取り付ける鏡体Mには、適当箇所に銀膜2を除去した部分を形成してガラス板1のみとした光透過部20,21を設けることにより、センサー領域Sと発光領域Tとなす。そして該鏡体Mの裏面に、遮光性のスペーサ19を介在させて、前記光センサー式スイッチ10の基板11を両面テープ3などで取り付ける。このとき、受光素子12及び投光素子13から成る光検知部がセンサー領域Sに対向し、発光素子14が発光領域Tに対向するように位置合わせをする。センサー領域Sの裏面側には、投光素子13から投射される物体検知用の赤外線だけを透過させる赤外透過フィルター18を装着することが望ましい。また、発光領域Tの裏面側には、蛍光プレート17を装着して、発光素子14から光が投射されると、発光領域Tが蛍光を発したり所定の文字(例えば「防曇」「照明」など)や記号が描出されるように構成してもよい。
【0013】
本例の光センサー式スイッチ10は、一個の受光素子12を中心とし、その周囲に複数個の投光素子13を取り囲むように配置したところを特色とするものであって、かかる構成に基づき、光センサー式スイッチ10を鏡体M裏面に取り付けるに際し、多少の位置ずれを許容できるという効果を発揮する。光検知部と光透過部20との位置関係は、光センサー式スイッチ10の取付作業の不備や、サンドブラストなどで銀幕2の一部を除去して光透過部20を形成する際に貼着するマスキングテープの位置ずれなどの理由により所期の状態とならない場合がある。それ故、もし仮に、受光素子12と投光素子13とをそれぞれ一個ずつしか持たず、光透過部20の開口面積がそれほど広くないときは、受光素子12又は投光素子13の光軸が遮られるか干渉を受けて物体検知が正確にできなくなる可能性があるので、光センサー式スイッチ10の取付位置を厳密に調整する必要があった。
【0014】
しかるに本発明の光センサー式スイッチ10は、受光素子12を中心として、その周囲に複数個の投光素子13を配置する構成を採用したので、図4の(A)〜(D)に示す如く、光透過部20に対し、正規の取付位置から上下左右に多少ずれたとしても、いずれかの投光素子13から投射される光が必ず光透過部20を通過し、且つ、反射光が受光素子12で確実に捕捉されるようになる。従って本発明の光センサー式スイッチ10は、多少の位置ずれを起こしても、物体検知を確実に行えるので、取付作業の厳密性が不要となり、作業者の負担を軽減できる。
【0015】
但し、光センサー式スイッチ10が位置ずれを生じたときは、物体検知の最適距離に変動をきたす場合がある。そこで、受光素子12が物体検知信号を出力する閾値の設定を修正するため、閾値変更回路を設けることが望ましい。
【0016】
前記の如く構成された光センサー式スイッチ10は、使用者が鏡体Mの表面側から手指をセンサー領域Sに接近させると、光検知部の投光素子13から投射された光が反射され、これを受光素子12が検出して物体検知信号を制御回路Cへ出力する。制御回路Cは、物体検知信号を受けて照明装置L又は防曇ヒータHをON動作させると同時に、発光素子14にもON動作信号を出力する。これにより発光素子14から光が投射され、所定の文字又は記号を鏡体M上に描出する。引き続き、センサー領域Sに手指を再度接近又は接触させると、受光素子12から制御回路Cへ物体検知信号が出力されることにより、照明装置L又は防曇ヒータHを停止させると同時に、発光素子14にもOFF動作信号を出力し、これを消灯させる。
【0017】
なお、発光素子14に、三色LEDや単色LEDを複数個組み合わせたものなど、投射光の色を変更できる機能を持つものを使用し、使用者が、手指をセンサー領域Sへ向かって差し出したり引っ込めたりして電気器具の動作を切り替えると同時に、発光領域Tの発色が異なるようにすれば、動作状況の把握が一層容易になる。例えば、電気器具がOFF状態のときは発光領域Tを例えば赤に発光させ、電気器具がON動作のときには発光領域Tを例えば緑色に発光させることが考えられる。また上記態様によれば、発光素子14を常時点灯させて発光領域Tが発光状態に維持されるから、夜間等の室内が暗い状態でも、センサー領域Sの位置を容易に視認できるという利点が得られる。
【0018】
本発明に係る光センサー式スイッチ10の光検知部は、図5の(A)に示すように、一個の投光素子13を中心として、その周囲に複数個の受光素子12を配置する構成とすることも可能である。この場合は、複数の受光素子12から物体検知信号が出力され得るから、単一の物体検知信号が出力されるような回路構成を組むことが必要となる。具体的には、複数の受光素子12を並列のスイッチ回路に組むことが考えられる。また、この例では、光センサー式スイッチ10が位置ずれを起こしたとしても、受光素子12が物体検知信号の出力動作を起こす閾値の変更はほぼ不要となる。
【0019】
さらに本発明は、図5(B)に示す如く、光検知部の構成を、複数個の受光素子12と複数個の投光素子13とを規則的に配置するものとしてもよい。
【0020】
ところで本発明に係る光センサー式スイッチ10は、鏡体のほか、タイルや陶板の裏面側に取り付けることも考えられる。この場合、タイルや陶板に開口部を形成して光透過部と成す。但しタイルや陶板などのセラミック製品は、焼成時変形により、前記開口部の寸法や位置が変化する可能性がある。従って、位置ずれを生じても物体検知の確実な本発明光センサー式スイッチ10は、タイルや陶板などのセラミック製品・焼成品に適用すると、きわめて有用である。
【0021】
【発明の効果】
本発明の光センサー式スイッチは、光検知部を、複数個の受光素子又は複数個の投光素子を用いて構成したので、光透過部に対する取付位置が多少ずれたとしても、物体検知を確実に行える。それ故、光センサー式スイッチの取付作業に厳密性が要求されないから、作業者の負担を軽減することができる。また、光透過部の開口面積を広くする必要がないから、意匠性・美観性を損なわない。
【図面の簡単な説明】
【図1】本発明の一実施形態に関するものであって、光センサー式スイッチを鏡体に設けた洗面化粧台の正面図である。
【図2】本発明の一実施形態に関するものであって、鏡体に設けた光センサー式スイッチの正面図である。
【図3】本発明の一実施形態に関するものであって、鏡体に設けた光センサー式スイッチの側面断面図である。
【図4】図(A)〜(D)は、本発明に係る光センサー式スイッチが、上下左右に位置ずれを生じて取り付けられた状況を示す正面図である。
【図5】本発明に係る光センサー式スイッチの異なる実施形態を示すものであって、図(A)は一個の投光素子と複数個の受光素子とで光検知部を構成した例を示す要部の正面図、図(B)は複数個の投光素子と複数個の受光素子とで光検知部を構成した例を示す正面図である。
【図6】従来例に関するものであって、光センサー式スイッチを鏡体に設けた洗面化粧台を示す斜視図である。
【図7】特許文献1に記載された従来の光センサー式スイッチを示す側面断面図である。
【符号の説明】
10…光センサー式スイッチ 11…基板 12…受光素子 13…投光素子 14…発光素子 20…光透過部 C…制御回路 H…防曇ヒータ K…洗面化粧台 L…照明装置 M…鏡体 S…センサー領域 T…発光領域
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention, for example, is attached to the back side of a mirror body of a vanity stand, and detects ON / OFF of an electric appliance such as an anti-fog heater or a lighting device by detecting a hand approaching the front side of the mirror body. The present invention relates to an optical sensor type switch made as described above.
[0002]
[Prior art]
In an indoor environment where water is used a lot, such as in a restroom or bathroom, a switch that controls ON / OFF of electrical appliances such as an anti-fog heater and a lighting device of the mirror is an optical sensor type switch, and this is a mirror that is hard to be exposed to water. It has been proposed to dispose it on the back side. For example, in the vanity table K shown in FIG. 6, a light transmitting portion is formed in the mirror body M to form the sensor area S, and when the hand is approached from the front side, the light is arranged on the back side of the sensor area S. The sensor detects and outputs a detection signal, and based on the detection signal, the anti-fog heater, the lighting equipment, and the like are set to be turned ON / OFF.
[0003]
Patent Document 1 discloses an example of an optical sensor type switch that makes it easy to confirm the operation state of an electric appliance by causing a sensor area S provided in a mirror body M to emit light in accordance with ON / OFF of the electric appliance. I have. As shown in FIG. 7, the structure is such that a light transmitting portion 30 of only the glass plate 1 on which the silver film 2 is not formed is provided in a part of the mirror body M to form a sensor area S, and a photoelectric type is provided on the back side thereof. An infrared light receiving / emitting element 31 as a sensor and an electroluminescent light emitting element (EL light emitting element) 32 as an operation confirmation indicator light are arranged. Since light is transmitted through the sensor area S, when the fingertip 40 or the like approaches the sensor area S, the infrared light receiving / emitting element 31 detects this and outputs a detection signal to turn on the anti-fog heater and the like. At the same time, the EL area 32 is turned on to emit light in the sensor area S, and a display is made so that the user can visually recognize that the anti-fog heater and the like are in the ON operation. If the fingertip 40 or the like approaches the sensor area S again during the ON operation, the infrared light receiving and emitting element 31 detects this and stops the operation of the anti-fog heater and the like, and at the same time, the EL light emitting element 32 is turned off. Turn off the light. As a result, the fact that the operation of the anti-fog heater and the like is stopped is visually displayed. As described above, the optical sensor-type switch described in Patent Literature 1 has an effect that the switch can be operated in a non-contact manner and the ON / OFF state of the anti-fog heater can be visually confirmed. .
[0004]
[Patent Document 1]
Published Japanese Utility Model Application No. 6-29463.
[Problems to be solved by the invention]
In order to reliably detect the hand 40 and the like approaching the sensor area S by the optical sensor type switch of Patent Document 1, light projected from the infrared light receiving / emitting element 31 is detected by the hand 40 positioned in front of the sensor area S. Etc. must be accurately irradiated. That is, the optical axis of the infrared light receiving and emitting element 31 has to pass through substantially the center of the light transmitting section 30. For this reason, the conventional optical sensor type switch needs to be carefully positioned when mounted on the back of the mirror body M or the like, and places a burden on the operator. Further, when the mounting position of the optical sensor type switch is improper, the optical axis of the infrared light receiving / emitting element 31 may be displaced from the light transmitting portion 30, and the object detection may be inaccurate or impossible. was there. In order to avoid the above problem, it is conceivable to form the light transmitting portion 30 with a large area. However, in this case, another problem of impairing the design and aesthetics is caused.
[0006]
[Means for Solving the Problems]
The feature of the optical sensor type switch employed in the present invention to solve the conventional problem is that the optical sensor type switch includes a light detecting unit including a light emitting element and a light receiving element, and detects an object output from the light detecting unit. In the optical sensor type switch which is configured to turn on / off a predetermined device based on a signal, the light detecting unit has a configuration in which a plurality of light emitting elements are arranged around a light receiving element. is there. Thus, the light sensor type switch according to the present invention has a plurality of light projecting elements arranged around the light receiving element. For example, when the light projecting element is mounted on the back surface of the mirror body, the light transmitting part and the light detecting part formed on the mirror body are formed. Even if there is a slight misalignment between the light source and the light source, the light projected from any of the light emitting elements can pass through the light transmission part and be surely irradiated on the detection target, so that object detection can be performed. Can be performed reliably. As a result, it is not necessary to strictly position the optical sensor type switch.
[0007]
The light detection unit in the optical sensor type switch of the present invention may have a configuration in which a plurality of light receiving elements are arranged around a light emitting element, or a plurality of light receiving elements and a plurality of light emitting elements are regularly arranged. It is also possible to adopt a configuration in which:
[0008]
Further, the light sensor type switch of the present invention has a light detection unit including a light receiving element and a light projection element on a substrate, and a light emitting unit that is turned on / off based on an object detection signal output from the light detection unit. An element may be provided. With this configuration, since the light-emitting element that emits light and emits light in response to the detection of the object is provided, it is easy to visually specify the operation state of the device that is turned on and off.
[0009]
By the way, the optical sensor type switch of the present invention is mounted on the back side of the light transmitting portion formed on the mounting target member, and detects an object approaching the front side of the mounting target member to turn on / off a predetermined device. Used for Examples of the attachment target member include a ceramic body, a plastic plate, a metal plate, and the like in addition to a mirror body in a vanity table or a mirror cabinet.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 shows an embodiment in which an optical sensor type switch 10 according to the present invention is applied to a vanity stand K. In the present embodiment, an appropriate location in the mirror body M of the vanity stand K is defined as the sensor area S and the light emitting area T, and the optical sensor type switch 10 including the light detecting unit and the light emitting element is disposed on the back side thereof. Then, by detecting a finger approaching the sensor area S, various types of light, such as an anti-fog heater H disposed on the back surface or inside the mirror M and a lighting device L disposed above the mirror M, are detected through the control circuit C. The electric appliance is operated or stopped, and the light emitting region T emits light in accordance with the operation state of the electric appliance. As illustrated in the drawings, two optical sensor switches 10 and 10 are mounted on the back surface of the mirror body M, and one optical sensor switch 10 is, for example, a switch for an anti-fog heater H, and the other optical sensor switch 10 is provided. May be a switch for the lighting device L, for example. Further, the control circuit C can be housed in the case of the lighting device L, the inside of a cabinet, or the like.
[0011]
As shown in FIGS. 2 and 3, the optical sensor type switch 10 of the present embodiment includes one light receiving element 12 arranged on a substrate 11 and a plurality of light emitting elements 13 arranged around the light receiving element 12. A light detecting section, a plurality of light emitting elements 14 such as LEDs, a signal amplifier 15 for amplifying a light receiving signal output from the light receiving element 12 to obtain an object detection signal, and the light receiving element 12, the light projecting element 13, and the light emitting element The connector 16 also serves as a power supply terminal for the power supply 14 and an output terminal for an object detection signal. As the light receiving element 12, a photoelectric sensor is used, and as the light projecting element 13, an infrared LED is used. A visible LED or an ultraviolet LED is used for the light emitting element 14.
[0012]
On the other hand, the mirror M to which the optical sensor type switch 10 is attached is provided with light transmitting portions 20 and 21 in which only the glass plate 1 is formed by forming a portion where the silver film 2 is removed at an appropriate position, so that the sensor area S is provided. And a light emitting region T. Then, the substrate 11 of the optical sensor type switch 10 is attached to the back surface of the mirror body M with a light-shielding spacer 19 interposed therebetween with a double-sided tape 3 or the like. At this time, the alignment is performed so that the light detection unit including the light receiving element 12 and the light emitting element 13 faces the sensor area S, and the light emitting element 14 faces the light emitting area T. It is desirable to mount an infrared transmission filter 18 that transmits only infrared rays for object detection projected from the light projecting element 13 on the back side of the sensor area S. Further, a fluorescent plate 17 is mounted on the back surface side of the light emitting region T, and when light is projected from the light emitting element 14, the light emitting region T emits fluorescent light or a predetermined character (for example, “anti-fog”, “lighting”). , Etc.) and symbols may be drawn.
[0013]
The optical sensor type switch 10 of the present example is characterized in that one light receiving element 12 is the center, and a plurality of light emitting elements 13 are arranged around the light receiving element 12 around the light receiving element 12. When the optical sensor type switch 10 is mounted on the back surface of the mirror body M, an effect that a slight displacement can be tolerated is exhibited. The positional relationship between the light detection unit and the light transmission unit 20 is determined by attaching the light sensor type switch 10 when the operation is inadequate or when the light transmission unit 20 is formed by removing a part of the silver screen 2 by sandblasting or the like. In some cases, the expected state may not be achieved due to reasons such as a displacement of the masking tape. Therefore, if only one light receiving element 12 and one light emitting element 13 are provided, and the opening area of the light transmitting portion 20 is not so large, the optical axis of the light receiving element 12 or the light emitting element 13 is blocked. Therefore, it is necessary to strictly adjust the mounting position of the optical sensor type switch 10 because there is a possibility that the object detection cannot be performed accurately due to the interference or interference.
[0014]
However, the optical sensor type switch 10 of the present invention employs a configuration in which a plurality of light projecting elements 13 are arranged around the light receiving element 12, and as shown in FIGS. 4A to 4D. The light projected from any of the light projecting elements 13 must pass through the light transmitting unit 20 and the reflected light is received even if the light transmitting unit 20 is slightly displaced up, down, left, and right from the proper mounting position. The element 12 ensures the capture. Therefore, the optical sensor type switch 10 of the present invention can reliably detect an object even if a slight displacement occurs, so that strictness of the mounting work is not required and the burden on the operator can be reduced.
[0015]
However, when the optical sensor type switch 10 is displaced, the optimum distance for object detection may fluctuate. Therefore, in order to correct the setting of the threshold at which the light receiving element 12 outputs the object detection signal, it is desirable to provide a threshold changing circuit.
[0016]
When the user approaches his / her finger from the front side of the mirror body M to the sensor area S, the light sensor type switch 10 configured as described above reflects light projected from the light emitting element 13 of the light detection unit, This is detected by the light receiving element 12 and an object detection signal is output to the control circuit C. The control circuit C receives the object detection signal, turns on the lighting device L or the anti-fog heater H, and outputs an ON operation signal to the light emitting element 14 at the same time. Thereby, light is projected from the light emitting element 14, and a predetermined character or symbol is drawn on the mirror M. Subsequently, when the finger approaches or touches the sensor area S again, an object detection signal is output from the light receiving element 12 to the control circuit C, so that the lighting device L or the anti-fog heater H is stopped, and at the same time, the light emitting element 14 is stopped. Also outputs an OFF operation signal to turn it off.
[0017]
A light emitting element 14 having a function of changing the color of the projection light, such as a combination of a plurality of three-color LEDs or a plurality of single-color LEDs, is used. If the color of the light emitting area T is made different at the same time as the operation of the electric appliance is switched by being retracted, it is easier to grasp the operation state. For example, when the electric appliance is in the OFF state, the light emitting region T emits red light, for example, and when the electric appliance is in the ON operation, the light emitting region T emits green light, for example. Further, according to the above aspect, since the light emitting element 14 is constantly turned on and the light emitting region T is kept in a light emitting state, there is an advantage that the position of the sensor region S can be easily visually recognized even in a dark room such as at night. Can be
[0018]
As shown in FIG. 5A, the light detecting section of the optical sensor type switch 10 according to the present invention has a configuration in which one light projecting element 13 is centered and a plurality of light receiving elements 12 are arranged around the light projecting element 13. It is also possible. In this case, since a plurality of light receiving elements 12 can output an object detection signal, it is necessary to configure a circuit configuration that outputs a single object detection signal. Specifically, it is conceivable to combine a plurality of light receiving elements 12 into a parallel switch circuit. Further, in this example, even if the optical sensor type switch 10 is displaced, it is almost unnecessary to change the threshold value at which the light receiving element 12 outputs the object detection signal.
[0019]
Further, in the present invention, as shown in FIG. 5B, the configuration of the light detection unit may be such that the plurality of light receiving elements 12 and the plurality of light projecting elements 13 are regularly arranged.
[0020]
By the way, the optical sensor type switch 10 according to the present invention may be attached to the back side of a tile or a ceramic plate in addition to the mirror body. In this case, an opening is formed in a tile or ceramic plate to form a light transmitting portion. However, for ceramic products such as tiles and ceramic plates, the dimensions and positions of the openings may change due to deformation during firing. Therefore, the optical sensor type switch 10 of the present invention, which can surely detect an object even if a displacement occurs, is extremely useful when applied to ceramic products and fired products such as tiles and ceramic plates.
[0021]
【The invention's effect】
In the optical sensor type switch of the present invention, since the light detection unit is configured by using a plurality of light receiving elements or a plurality of light emitting elements, even if the mounting position with respect to the light transmission unit is slightly shifted, the object detection can be reliably performed. Can be done. Therefore, strictness is not required for the mounting work of the optical sensor type switch, so that the burden on the operator can be reduced. Further, since it is not necessary to increase the opening area of the light transmitting portion, the design and aesthetics are not impaired.
[Brief description of the drawings]
FIG. 1 relates to one embodiment of the present invention, and is a front view of a vanity table provided with an optical sensor type switch on a mirror body.
FIG. 2 relates to one embodiment of the present invention, and is a front view of an optical sensor type switch provided on a mirror body.
FIG. 3 relates to one embodiment of the present invention, and is a side sectional view of an optical sensor type switch provided on a mirror body.
FIGS. 4A to 4D are front views showing a situation in which the optical sensor type switch according to the present invention is mounted with a positional shift in the vertical and horizontal directions.
5A and 5B show different embodiments of the optical sensor type switch according to the present invention, and FIG. 5A shows an example in which one light emitting element and a plurality of light receiving elements constitute a light detecting section. FIG. 2B is a front view showing an example in which a light detecting unit is constituted by a plurality of light projecting elements and a plurality of light receiving elements.
FIG. 6 relates to a conventional example and is a perspective view showing a vanity table provided with an optical sensor type switch on a mirror body.
FIG. 7 is a side sectional view showing a conventional optical sensor type switch described in Patent Document 1.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Light sensor type switch 11 ... Substrate 12 ... Light receiving element 13 ... Light emitting element 14 ... Light emitting element 20 ... Light transmission part C ... Control circuit H ... Anti-fog heater K ... Washstand L ... Lighting device M ... Mirror S ... Sensor area T ... Emission area

Claims (5)

投光素子と受光素子とから成る光検知部を備え、当該光検知部から出力される物体検知信号に基づき所定機器をオン・オフ動作させるようになされた光センサー式スイッチにおいて、前記光検知部は受光素子の周囲に複数の投光素子を配置した構成を有していることを特徴とする光センサー式スイッチ。An optical sensor type switch comprising: a light detecting element comprising a light projecting element and a light receiving element; and turning on and off a predetermined device based on an object detection signal output from the light detecting section. A light sensor type switch having a structure in which a plurality of light projecting elements are arranged around a light receiving element. 投光素子と受光素子とから成る光検知部を備え、当該光検知部から出力される物体検知信号に基づき所定機器をオン・オフ動作させるようになされた光センサー式スイッチにおいて、前記光検知部は投光素子の周囲に複数の受光素子を配置した構成を有していることを特徴とする光センサー式スイッチ。An optical sensor type switch comprising: a light detecting element comprising a light projecting element and a light receiving element; and turning on and off a predetermined device based on an object detection signal output from the light detecting section. Is a light sensor type switch having a configuration in which a plurality of light receiving elements are arranged around a light projecting element. 投光素子と受光素子とから成る光検知部を備え、当該光検知部から出力される物体検知信号に基づき所定機器をオン・オフ動作させるようになされた光センサー式スイッチにおいて、前記光検知部は複数の受光素子と複数の投光素子とを規則的に配置した構成を有していることを特徴とする光センサー式スイッチ。An optical sensor type switch comprising: a light detecting element comprising a light projecting element and a light receiving element; and turning on and off a predetermined device based on an object detection signal output from the light detecting section. Is an optical sensor type switch having a structure in which a plurality of light receiving elements and a plurality of light emitting elements are regularly arranged. 基板上に、受光素子及び投光素子から成る光検知部と共に、該光検知部から出力される物体検知信号に基づきオン・オフ動作するようになされた発光素子が設けられた請求項1乃至3のいずれかに記載する光センサー式スイッチ。4. A light detecting element comprising a light receiving element and a light projecting element, and a light emitting element which is turned on / off based on an object detection signal output from the light detecting part is provided on the substrate. The optical sensor type switch according to any one of the above. 取付対象部材に形成した光透過部の裏面側に取り付けられ、取付対象部材の表面側に接近する物体を検知して、所定機器をオン・オフ動作させるようになされた請求項1乃至3のいずれかに記載する光センサー式スイッチ。4. The apparatus according to claim 1, wherein the predetermined device is mounted on a back surface of the light transmitting portion formed on the mounting target member and detects an object approaching the front surface side of the mounting target member to turn on / off a predetermined device. The optical sensor type switch described in.
JP2003150049A 2003-05-28 2003-05-28 Photosensor type switch Pending JP2004355867A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011015909A (en) * 2009-07-10 2011-01-27 Inaba Denki:Kk Mirror with defogging function
JP2011525239A (en) * 2008-06-20 2011-09-15 オスラム オプト セミコンダクターズ ゲゼルシャフト ミット ベシュレンクテル ハフツング Photoelectric switch and method for detecting objects
JP5947404B2 (en) * 2012-12-20 2016-07-06 株式会社アルファ Photo sensor unit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011525239A (en) * 2008-06-20 2011-09-15 オスラム オプト セミコンダクターズ ゲゼルシャフト ミット ベシュレンクテル ハフツング Photoelectric switch and method for detecting objects
US8711334B2 (en) 2008-06-20 2014-04-29 Osram Opto Semiconductors Gmbh Light barrier and method for detecting objects
JP2011015909A (en) * 2009-07-10 2011-01-27 Inaba Denki:Kk Mirror with defogging function
JP5947404B2 (en) * 2012-12-20 2016-07-06 株式会社アルファ Photo sensor unit
JPWO2014097941A1 (en) * 2012-12-20 2017-01-12 株式会社アルファ Photo sensor unit

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