JP2006119093A - Lighting system - Google Patents

Lighting system Download PDF

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JP2006119093A
JP2006119093A JP2004309894A JP2004309894A JP2006119093A JP 2006119093 A JP2006119093 A JP 2006119093A JP 2004309894 A JP2004309894 A JP 2004309894A JP 2004309894 A JP2004309894 A JP 2004309894A JP 2006119093 A JP2006119093 A JP 2006119093A
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illumination
light source
light
detection electrode
guide plate
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JP4319965B2 (en
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Shinichi Nikaido
伸一 二階堂
Noboru Tsuji
昇 辻
Akira Uejima
彰 上島
Nobumasa Misaki
信正 見崎
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Fujikura Ltd
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Fujikura Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To realize miniaturization, and to make a detection electrode inconspicuous. <P>SOLUTION: The rear face of a light guide plate 1 having a lighting face 1a is attached with the detection electrode 2. The detection electrode 2 is formed with an opening part 2a, and light from a light source 3 is irradiated on the light guide plate 1 through the opening part 2a. When the human body approaches the detection electrode 2, an electrostatic capacity detection circuit detects a change of ground capacity of the detection electrode 2, and a lighting control circuit turns on or turns off the light source 3 when a detection value thereof exceeds a prescribed threshold value successively for a prescribed time. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、家庭用、産業用、車載用に使用される照明装置に関する。   The present invention relates to a lighting device used for home use, industrial use, and in-vehicle use.

従来より、静電容量の変化を検出して光源を点灯させる照明装置として特許文献１に開示のものが知られている。この照明装置は、人体の接近を検知する電極と、この電極の静電容量の変化を検出する静電容量式センサと、静電容量式センサからの所定の時間幅を有する出力に応動して光源の点灯又は消灯制御を行う制御回路とを備えたものである。   Conventionally, a device disclosed in Patent Document 1 is known as an illumination device that detects a change in capacitance and turns on a light source. This illumination device is responsive to an output having a predetermined time width from an electrode that detects the approach of a human body, a capacitance sensor that detects a change in capacitance of the electrode, and the capacitance sensor. And a control circuit that controls turning on or off the light source.

この照明装置によれば、点灯又は消灯の意志を持った操作者の手の動きのみに反応し、それ以外のものの動きには反応しない照明装置を提供することができる。
特開平８−６４３６４号公報、段落０００８，００１６，図１ According to this illuminating device, it is possible to provide an illuminating device that reacts only to the movement of the hand of the operator who intends to turn on or off, and does not react to the movement of other things.
JP-A-8-64364, paragraphs 0008, 0016, FIG.

しかしながら、上述した従来の照明装置では、静電容量検知を行うセンサ部分と、光源とが別体となっているので、全体的な小型化を図ることができない。また、検知電極が目立つため、意匠的な観点から検知電極が目立つのを極力控えたい場合には利用できないという問題がある。   However, in the above-described conventional illumination device, the sensor portion for detecting the capacitance and the light source are separate, and thus the overall size cannot be reduced. Further, since the detection electrode is conspicuous, there is a problem that it cannot be used when it is desired to suppress the detection electrode from being conspicuous as much as possible from a design viewpoint.

本発明は、このような点に鑑みてなされたもので、小型化を図ることができ、検知電極を目立たなくすることができる照明装置を提供することを目的とする。   This invention is made | formed in view of such a point, and it aims at providing the illuminating device which can achieve size reduction and can make a detection electrode inconspicuous.

本発明に係る照明装置は、照光面を有する照光手段と、この照光手段の前記照光面に対応する位置に配置された検知電極と、この検知電極と接地との間の静電容量を検出してこれに対応した検出値を出力する静電容量検知回路と、この静電容量検知回路から出力される検出値が所定のしきい値を超えたときに前記照光手段を点灯又は消灯させる制御回路とを有することを特徴とする。   An illuminating device according to the present invention detects an electrostatic capacity between an illuminating unit having an illuminating surface, a detecting electrode disposed at a position corresponding to the illuminating surface of the illuminating unit, and the detecting electrode and ground. And a control circuit for turning on or off the illumination means when the detection value output from the capacitance detection circuit exceeds a predetermined threshold value. It is characterized by having.

本発明によれば、検知電極が、照光手段の前記照光面に対応する位置に配置されているので、照光手段に人体を近づければ、静電容量検知回路がこの人体の接近を検出して、照光手段を点灯又は消灯制御させることができる。このように、本発明は検知電極と照光手段とが一体となっているので、装置全体の小型化が可能で、検知電極を照光手段で覆うことができるので、検知電極が目立つこともなく、意匠的な不具合も解消される。   According to the present invention, since the detection electrode is disposed at a position corresponding to the illumination surface of the illumination means, if the human body is brought close to the illumination means, the capacitance detection circuit detects the approach of the human body. The illumination means can be controlled to be turned on or off. Thus, since the detection electrode and the illuminating means are integrated in the present invention, the entire apparatus can be downsized and the detection electrode can be covered with the illuminating means, so that the detection electrode is not noticeable, Design defects are also eliminated.

以下、添付の図面を参照して、本発明の実施の形態を説明する。   Embodiments of the present invention will be described below with reference to the accompanying drawings.

図１は、本発明の第１の実施形態に係る照明装置の構成を示す概略的な分解斜視図である。   FIG. 1 is a schematic exploded perspective view showing a configuration of a lighting apparatus according to the first embodiment of the present invention.

この照明装置は、一方の面を照光面１ａとする導光部材としてのガラス、プラスチック等からなる導光板１と、この導光板１の照光面１ａとは反対側の面に添設され、矩形状の開口部２ａを有する矩形状の検知電極２と、この検知電極２の開口部２ａを通して導光板１に光を供給するＬＥＤ等の光源３とを備えて構成されている。ここで、導光板１と光源３とは、照光手段を構成している。   This illuminating device is attached to a light guide plate 1 made of glass, plastic or the like as a light guide member having one surface as an illumination surface 1a, and a surface opposite to the illumination surface 1a of the light guide plate 1. A rectangular detection electrode 2 having a shape opening 2 a and a light source 3 such as an LED that supplies light to the light guide plate 1 through the opening 2 a of the detection electrode 2 are configured. Here, the light guide plate 1 and the light source 3 constitute illumination means.

図２は、この照明装置の回路構成を示す回路図である。   FIG. 2 is a circuit diagram showing a circuit configuration of the illumination device.

検知電極２は、静電容量検知回路１１に接続されている。静電容量検知回路１１は、検知電極２と接地との間の静電容量に応じた検出値を出力する。この検知回路１１は、例えば発振回路を内蔵し、検知電極２によって生成される静電容量Ｃｘに応じて発振周波数又はデューティー比が変化する信号を生成するものである。この検知回路１１から出力される検出値は、判定回路１２に入力されている。判定回路１２は、コンパレータ１２１を備えて構成されている。コンパレータ１２１は、一方の入力端に静電容量検知回路１１からの検出値を入力し、他方の入力端に、判定電圧生成回路１２２で生成された第１判定電圧を入力し、検出値が第１判定電圧を超えたときに第１検知信号を出力する。この第１検知信号は、照明点灯制御回路１３に入力される。照明点灯制御回路１３は、判定回路１２からの出力が一定期間連続してＯＮ状態であるときに、出力状態（ＯＮ／ＯＦＦ状態）を反転させる。光源駆動回路１４は、照明点灯制御回路１３の出力がＯＮ状態となっているときに光源３を駆動する。   The detection electrode 2 is connected to the capacitance detection circuit 11. The capacitance detection circuit 11 outputs a detection value corresponding to the capacitance between the detection electrode 2 and the ground. The detection circuit 11 includes an oscillation circuit, for example, and generates a signal whose oscillation frequency or duty ratio changes according to the capacitance Cx generated by the detection electrode 2. The detection value output from the detection circuit 11 is input to the determination circuit 12. The determination circuit 12 includes a comparator 121. The comparator 121 inputs the detection value from the capacitance detection circuit 11 to one input terminal, and inputs the first determination voltage generated by the determination voltage generation circuit 122 to the other input terminal. A first detection signal is output when the determination voltage exceeds one. This first detection signal is input to the illumination lighting control circuit 13. The illumination lighting control circuit 13 reverses the output state (ON / OFF state) when the output from the determination circuit 12 is continuously ON for a certain period. The light source drive circuit 14 drives the light source 3 when the output of the illumination lighting control circuit 13 is ON.

次に、このように構成された本実施形態に係る照明装置の動作について説明する。   Next, operation | movement of the illuminating device based on this embodiment comprised in this way is demonstrated.

消灯状態において、検知電極２に人体、例えば指が接近（例えば導光板１に接触）すると、検知電極２の人体を介した対接地容量が変化し、この結果、静電容量検知回路１１から出力される検出値が増加する。照明点灯制御回路１３は、静電容量検知回路１１からの検出値が第１判定電圧を超えたことを判定回路１２が所定時間（１〜２秒）継続して検出していたら、出力をＯＦＦ状態からＯＮ状態に反転させ、光駆動回路１４を駆動して光源３を点灯させる。また、点灯状態において、検知電極２に人体が接近（例えば導光板１に接触）すると、検知電極２の対接地容量が変化する。静電容量検知回路１１からの検出値が第１判定電圧を所定時間超えると、照明点灯制御回路１３の出力がＯＮ状態からＯＦＦ状態に反転し、光源３がＯＦＦ状態となる。   When a human body, such as a finger, approaches the detection electrode 2 in the light-off state (for example, touches the light guide plate 1), the grounding capacitance of the detection electrode 2 through the human body changes, and as a result, output from the capacitance detection circuit 11 The detected value increases. The illumination lighting control circuit 13 turns off the output when the determination circuit 12 continuously detects that the detection value from the capacitance detection circuit 11 exceeds the first determination voltage for a predetermined time (1 to 2 seconds). The light source 3 is turned on by driving the light driving circuit 14 by inverting the state to the ON state. Further, when the human body approaches the detection electrode 2 in the lighting state (for example, contacts the light guide plate 1), the ground capacitance of the detection electrode 2 changes. When the detection value from the capacitance detection circuit 11 exceeds the first determination voltage for a predetermined time, the output of the illumination lighting control circuit 13 is reversed from the ON state to the OFF state, and the light source 3 is turned OFF.

本実施形態の照明装置によれば、照光面１ａを有する導光板１の裏面に検知電極２が配置されているので、装置全体を小型化することができる。また、点灯又は消灯のためのスイッチの位置は、照光面１ａそれ自体である。つまり点灯する部分に直接接触することにより、点灯又は消灯操作を行うことができるので、スイッチ位置は極めて明確であり、操作性が向上する。   According to the illuminating device of this embodiment, since the detection electrode 2 is arrange | positioned at the back surface of the light-guide plate 1 which has the illumination surface 1a, the whole apparatus can be reduced in size. The position of the switch for turning on or off is the illumination surface 1a itself. That is, since the lighting or extinguishing operation can be performed by directly contacting the portion to be lit, the switch position is very clear and the operability is improved.

図３は、本発明の他の実施形態に係る照明装置の概略的な斜視図である。   FIG. 3 is a schematic perspective view of a lighting device according to another embodiment of the present invention.

この実施形態では、導光板１の照光面１ａに検知電極２′を配置している。この場合、検知電極２′は、導光板１の照光面１ａを覆うため、透明電極により構成されている。   In this embodiment, the detection electrode 2 ′ is disposed on the illumination surface 1 a of the light guide plate 1. In this case, the detection electrode 2 ′ is composed of a transparent electrode to cover the illumination surface 1 a of the light guide plate 1.

このような構成によれば、検知電極２′が導光板１の裏側ではなく、操作側に配置されるので、人体との近接距離を更に縮めることができ、検出感度をより向上させることができる。   According to such a configuration, the detection electrode 2 ′ is arranged not on the back side of the light guide plate 1 but on the operation side, so that the proximity distance to the human body can be further reduced, and the detection sensitivity can be further improved. .

図４は、本発明の更に他の実施形態に係る照明装置の電気的な構成を示すブロック図である。   FIG. 4 is a block diagram showing an electrical configuration of a lighting apparatus according to still another embodiment of the present invention.

この実施形態では、判定回路１２′が複数のコンパレータ１２１１，１２１２，…，１２１Ｎと複数の判定電圧生成回路１２２１，１２２２，…，１２２Ｎとより構成されている。判定電圧生成回路１２２１〜１２２Ｎからは、それぞれ電圧値の異なる第１〜第Ｎの判定電圧が出力されている。照明点灯制御回路１３は、判定回路１２の出力パターンから光源駆動回路１４による光源３の駆動パターンを変える。これにより、人体の接近の程度により、光源３の輝度を細かく設定することが可能になる。 In this embodiment, the determination circuit 12 'is a plurality of comparators 121 1, 121 2, ..., 121 N and a plurality of decision voltage generating circuit 122 1, 122 2, ..., are more configuration and 122 N. First to Nth determination voltages having different voltage values are output from the determination voltage generation circuits 122 1 to 122 N , respectively. The illumination lighting control circuit 13 changes the drive pattern of the light source 3 by the light source drive circuit 14 from the output pattern of the determination circuit 12. Thereby, it becomes possible to set the brightness | luminance of the light source 3 finely according to the degree of approach of a human body.

図５は、本発明の更に他の実施形態に係る照明装置の概略的な分解斜視図である。この照明装置は、被覆材としての意匠板４の裏側に検知電極２を配置し、更に検知電極２の裏面側に光源３を配置してなる。ここで意匠板１は、光透過性を有する樹脂、ガラス等の材料により形成され、例えば無色透明の板の表面１ａ上に目的にあった模様や色のシートを貼り付けるなどして、数十％、例えば１０〜５０％の光透過率に調整されたものである。   FIG. 5 is a schematic exploded perspective view of a lighting apparatus according to still another embodiment of the present invention. In this lighting device, the detection electrode 2 is arranged on the back side of the design plate 4 as a covering material, and the light source 3 is arranged on the back side of the detection electrode 2. Here, the design plate 1 is formed of a material such as a light-transmitting resin or glass, and, for example, a desired pattern or color sheet is pasted on the surface 1a of the colorless and transparent plate. %, For example, adjusted to a light transmittance of 10 to 50%.

この実施形態では、検知電極２に人体が接近して光源３が点灯されると、その光が検知電極２の開口部２ａを介して意匠板１の裏面を照射するので、意匠板１の表面の照光面４ａが光って見えることになる。   In this embodiment, when the human body approaches the detection electrode 2 and the light source 3 is turned on, the light irradiates the back surface of the design plate 1 through the opening 2 a of the detection electrode 2. The illuminated surface 4a appears to shine.

図６は、本発明の更に他の実施形態に係る照明装置を示す概略的な斜視図である。この実施形態では、２つの光源３，５を用いている。この場合、光源３，５は、人体がある程度近づいた状態、人体が接触した状態の２段階で、段階的に点灯数を増加させて輝度を上げたり、発光色を切り替える等の操作を行うことができる。   FIG. 6 is a schematic perspective view showing an illumination apparatus according to still another embodiment of the present invention. In this embodiment, two light sources 3 and 5 are used. In this case, the light sources 3 and 5 perform operations such as increasing the number of lightings in steps and increasing the luminance, switching the emission color, etc. in two stages: a state where the human body is close to some extent and a state where the human body is in contact. Can do.

図７は、本発明の更に他の実施形態に係る照明装置を示す概略的な斜視図である。この実施形態は、図６の意匠板４と検知電極２との間にバックライト用の導光板１を設けた例である。この実施形態によれば、意匠板４の照光面４ａをより均一に鮮明に照光することができる。   FIG. 7 is a schematic perspective view showing an illumination apparatus according to still another embodiment of the present invention. This embodiment is an example in which a light guide plate 1 for backlight is provided between the design plate 4 and the detection electrode 2 in FIG. According to this embodiment, the illumination surface 4a of the design plate 4 can be illuminated more uniformly and clearly.

図８は、本発明の更に他の実施形態に係る照明装置を示す概略的な斜視図である。この実施形態は、光源３をバックライト用の導光板１の側縁部に配置して両者でバックライト６を構成したものである。この場合には、意匠板１により均一な光を透光することができる。   FIG. 8 is a schematic perspective view showing an illumination apparatus according to still another embodiment of the present invention. In this embodiment, the light source 3 is arranged on the side edge of the light guide plate 1 for backlight, and the backlight 6 is configured by both. In this case, the design plate 1 can transmit uniform light.

図９は、本発明の更に他の実施形態に係る照明装置を示す概略的な斜視図である。上述した実施形態では、照光部材の導光体として導光板を使用したが、この実施形態では、導光体として円筒状の導光管７を使用している。導光管７の内部には、光源８が収容されている。導光管７の内面には透明な検知電極９が形成されている。この構成においても、導光管７に軽く接触することにより、照明が点灯又は消灯される。   FIG. 9 is a schematic perspective view showing an illumination apparatus according to still another embodiment of the present invention. In the embodiment described above, the light guide plate is used as the light guide of the illumination member, but in this embodiment, the cylindrical light guide tube 7 is used as the light guide. A light source 8 is accommodated in the light guide tube 7. A transparent detection electrode 9 is formed on the inner surface of the light guide tube 7. Also in this configuration, the illumination is turned on or off by lightly contacting the light guide tube 7.

本発明の一実施形態に係る照明装置の概略構成を示す分解斜視図である。It is a disassembled perspective view which shows schematic structure of the illuminating device which concerns on one Embodiment of this invention. 同装置の電気的構成を示すブロック図である。It is a block diagram which shows the electric constitution of the apparatus. 本発明の他の実施形態に係る照明装置の概略構成を示す分解斜視図である。It is a disassembled perspective view which shows schematic structure of the illuminating device which concerns on other embodiment of this invention. 本発明の更に他の実施形態に係る照明装置の電気的構成を示すブロック図である。It is a block diagram which shows the electric constitution of the illuminating device which concerns on further another embodiment of this invention. 本発明の更に他の実施形態に係る照明装置の構成を示す分解斜視図である。It is a disassembled perspective view which shows the structure of the illuminating device which concerns on further another embodiment of this invention. 本発明の更に他の実施形態に係る照明装置の構成を示す分解斜視図である。It is a disassembled perspective view which shows the structure of the illuminating device which concerns on further another embodiment of this invention. 本発明の更に他の実施形態に係る照明装置の構成を示す分解斜視図である。It is a disassembled perspective view which shows the structure of the illuminating device which concerns on further another embodiment of this invention. 本発明の更に他の実施形態に係る照明装置の構成を示す分解斜視図である。It is a disassembled perspective view which shows the structure of the illuminating device which concerns on further another embodiment of this invention. 本発明の更に他の実施形態に係る照明装置の構成を示す斜視図である。It is a perspective view which shows the structure of the illuminating device which concerns on other embodiment of this invention.

符号の説明Explanation of symbols

１…導光板、２，２′，９…検知電極、３，５，８…光源、４…意匠板、６…バックライト、７…導光管、１１…静電容量検知回路、１２，１２′…判定回路、１３，１３′…照明点灯制御回路、１４…光源駆動回路。   DESCRIPTION OF SYMBOLS 1 ... Light guide plate, 2, 2 ', 9 ... Detection electrode, 3, 5, 8 ... Light source, 4 ... Design plate, 6 ... Back light, 7 ... Light guide tube, 11 ... Capacitance detection circuit, 12, 12 '... judgment circuit, 13, 13' ... lighting control circuit, 14 ... light source drive circuit.

Claims (6)

照光面を有する照光手段と、
この照光手段の前記照光面に対応する位置に配置された検知電極と、
この検知電極と接地との間の静電容量を検出してこれに対応した検出値を出力する静電容量検知回路と、
この静電容量検知回路から出力される検出値が所定のしきい値を超えたときに前記照光手段を点灯又は消灯させる制御回路と
を有することを特徴とする照明装置。 An illumination means having an illumination surface;
A detection electrode disposed at a position corresponding to the illumination surface of the illumination means;
A capacitance detection circuit that detects a capacitance between the detection electrode and the ground and outputs a detection value corresponding to the capacitance;
And a control circuit for turning on or off the illumination means when a detection value output from the capacitance detection circuit exceeds a predetermined threshold value. 前記照光手段は、光源と、この光源からの光を前記照光面まで導く導光板とを備え、
前記検知電極は、前記導光板の前記照光面とは反対側の面に形成され、中央部に開口部を有し、
前記光源は、前記検知電極の開口部を介して前記導光板に光を照射するものである
ことを特徴とする請求項１記載の照明装置。 The illumination means includes a light source and a light guide plate that guides light from the light source to the illumination surface,
The detection electrode is formed on a surface opposite to the illumination surface of the light guide plate, and has an opening in the center.
The illumination device according to claim 1, wherein the light source irradiates light to the light guide plate through an opening of the detection electrode. 前記照光手段は、光源と、この光源からの光を前記照光面まで導く導光板とを備え、
前記検知電極は、前記導光板の前記照光面側に形成された透明電極である
ことを特徴とする請求項１記載の照明装置。 The illumination means includes a light source and a light guide plate that guides light from the light source to the illumination surface,
The lighting device according to claim 1, wherein the detection electrode is a transparent electrode formed on the illumination surface side of the light guide plate. 前記照光手段は、光源と、この光源を外部から覆うと共に前記光源と反対側の面に前記照光面を形成する被覆材とを備え、
前記検知電極は、前記被覆材の前記照光面とは反対側の面に形成され、中央部に開口部を有し、
前記光源は、前記検知電極の開口部を介して前記被覆板に光を照射するものであり、
前記被覆材は、前記光源の点灯時に前記光源からの光を前記照光面に浮かび上がらせる光透過率を有するものである
ことを特徴とする請求項1記載の照明装置。 The illumination means includes a light source and a covering material that covers the light source from the outside and forms the illumination surface on a surface opposite to the light source,
The detection electrode is formed on the surface of the covering material opposite to the illumination surface, and has an opening at the center.
The light source irradiates the cover plate with light through the opening of the detection electrode,
2. The illumination device according to claim 1, wherein the covering material has a light transmittance that causes light from the light source to float on the illumination surface when the light source is turned on. 前記被覆材は、表面に所定の意匠が施された意匠板であることを特徴とする請求項４記載の照明装置。   The lighting device according to claim 4, wherein the covering material is a design plate having a predetermined design on a surface thereof. 前記照光手段は、前記光源からの光を前記被覆材まで導く導光板を含むものであることを特徴とする請求項４記載の照明装置。   The illumination device according to claim 4, wherein the illumination unit includes a light guide plate that guides light from the light source to the covering material.
JP2004309894A 2004-10-25 2004-10-25 Lighting device Expired - Fee Related JP4319965B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014515093A (en) * 2012-02-03 2014-06-26 ファーウェイ デバイス カンパニー リミテッド Proximity detection device and portable terminal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014515093A (en) * 2012-02-03 2014-06-26 ファーウェイ デバイス カンパニー リミテッド Proximity detection device and portable terminal

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