JP4301093B2 - Lighting device - Google Patents

Lighting device Download PDF

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JP4301093B2
JP4301093B2 JP2004184909A JP2004184909A JP4301093B2 JP 4301093 B2 JP4301093 B2 JP 4301093B2 JP 2004184909 A JP2004184909 A JP 2004184909A JP 2004184909 A JP2004184909 A JP 2004184909A JP 4301093 B2 JP4301093 B2 JP 4301093B2
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light
light source
switch
switch unit
light guide
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JP2006007856A (en
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光博 苗代
聡 稲垣
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Toyoda Gosei Co Ltd
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Toyoda Gosei Co Ltd
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  • Push-Button Switches (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Planar Illumination Modules (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting system whereby a position of a lighting control switch can be easily grasped even in the night, and mounting work can be prevented from being complicated. <P>SOLUTION: This lighting system is provided with a light source using a part of emitted light for indoor lighting; a switch part used for other than lighting control of the light source; and a light guide body equipped with a first light introducing surface for introducing another part of the light emitted from the light source, and a first light emission surface formed at least along a part of an outer periphery of the switch part. <P>COPYRIGHT: (C)2006,JPO&amp;NCIPI

Description

本発明は照明装置に関する。詳しくは、スイッチ位置表示用の光放出面を有する照明装置に関する。   The present invention relates to a lighting device. Specifically, the present invention relates to an illumination device having a light emission surface for displaying a switch position.

自動車の室内において、夜間や暗所でも地図などを見ることができるように、乗員の手元などを照明するマップランプが利用されている。マップランプは通常、車両室内天井に設置され、同じく車両室内天井に設けられたスイッチによりその点灯状態が制御される。尚、車両室内天井に設けられるランプの一例が特許文献１に開示される。   Map lamps that illuminate the occupants' hands are used so that a map can be seen in a car at night or in the dark. The map lamp is usually installed on the ceiling of the vehicle interior, and its lighting state is controlled by a switch also provided on the ceiling of the vehicle interior. An example of a lamp provided on the vehicle interior ceiling is disclosed in Patent Document 1.

特開２００２−１２７８２１号公報JP 2002-127721 A

マップランプは車両室内が暗い時に使用される。しかし、車両室内が暗い時にはマップランプのスイッチの位置を把握しづらい。この問題を解決するため、マップランプのスイッチを照明することや、マップランプのスイッチに発光部を設けることなどの対策が考えられる。このようにすれば、車両室内が暗い時でも光によってマップランプのスイッチの位置を把握しやすくなる。しかし、スイッチ部を車両室内という限られたスペースに設けることを考慮すれば、マップランプのスイッチを照明する光源を設けることや、マップランプのスイッチに発光部を設けその発光部に光を供給する光源を設けることは現実的には難しい。また、限られたスペースにマップランプとマップランプのスイッチに加えて光源を設置することは取り付け作業を煩雑にする。
そこで本発明は、例えば車両室内のマップランプのスイッチ等の位置を夜間等でも容易に把握でき、取り付け作業性に優れた照明装置を提供する。さらに、車両室内のデザイン性の向上に寄与する照明装置を提供することを目的とする。 The map lamp is used when the vehicle interior is dark. However, it is difficult to grasp the position of the map lamp switch when the vehicle interior is dark. In order to solve this problem, measures such as illuminating the switch of the map lamp or providing a light emitting unit in the switch of the map lamp can be considered. This makes it easier to grasp the position of the map lamp switch by light even when the vehicle interior is dark. However, in consideration of providing the switch unit in a limited space in the vehicle interior, a light source for illuminating the map lamp switch is provided, or a light emitting unit is provided in the map lamp switch to supply light to the light emitting unit. It is practically difficult to provide a light source. Further, installing a light source in addition to a map lamp and a map lamp switch in a limited space complicates the installation work.
Therefore, the present invention provides an illumination device that can easily grasp the position of a map lamp switch or the like in a vehicle compartment, for example, at night, and has excellent mounting workability. Furthermore, it aims at providing the illuminating device which contributes to the improvement of the design property in a vehicle interior.

本発明は以上の目的の少なくとも一つを達成するために、以下に示す照明装置を提供する。即ち、
放出光の一部が室内照明に使用される光源と、
前記光源の点灯制御以外に使用されるスイッチ部と、及び
前記光源の放出光の他の一部を導入する第１光導入面と、前記スイッチ部の外周の少なくとも一部に沿って形成された第１光放出面とを備える導光体と、
を備える照明装置である。 In order to achieve at least one of the above objects, the present invention provides a lighting device described below. That is,
A light source in which part of the emitted light is used for room lighting,
The switch part used for other than the lighting control of the light source, the first light introduction surface for introducing another part of the emitted light of the light source, and at least a part of the outer periphery of the switch part. A light guide comprising a first light emitting surface;
It is an illuminating device provided with.

本発明の照明装置では、光源の光の一部を室内照明に使用し、他の一部を導光体に導入する。そして導光体に導入された光は、スイッチ部の外周の少なくとも一部に沿って形成された第１光放出面より放出される。これによってスイッチ部の外周付近が発光し、暗所でもスイッチ部の位置を容易に把握することが可能となる。また、室内照明に使用する光源の光の一部を利用してスイッチ部の外周付近を発光させるため、スイッチ部の外周付近を発光させるための光源を別途設ける必要がない。このように室内照明に使用する光源とスイッチ部外周付近を発光させるための光源とを共通化することで部品数の削減ができ、低コスト化及び取り付け作業性の向上も達成される。   In the illuminating device of the present invention, part of the light from the light source is used for room illumination, and the other part is introduced into the light guide. The light introduced into the light guide is emitted from the first light emitting surface formed along at least a part of the outer periphery of the switch unit. As a result, the vicinity of the outer periphery of the switch unit emits light, and the position of the switch unit can be easily grasped even in a dark place. In addition, since a part of the light of the light source used for indoor lighting is used to emit light near the outer periphery of the switch unit, it is not necessary to separately provide a light source for emitting light near the outer periphery of the switch unit. Thus, by sharing the light source used for indoor lighting and the light source for emitting light in the vicinity of the outer periphery of the switch unit, the number of parts can be reduced, and the cost can be reduced and the mounting workability can be improved.

以下、本発明における照明装置の構成要素について詳細に説明する。
（光源）
本発明で用いられる光源は、放出光の一部を室内照明に用いる照明装置の光源として使用される。例えば、車両室内、エレベータ室内、居室内などの室内を照明する照明装置の光源として用いられる。
光源の種類は特に限定されず、例えば、LED、電球（バルブ）、蛍光灯、冷陰極管などをここでの光源として用いることができる。中でもLEDを用いることが好ましい。LEDは小型であるため光源用のスペースが少なくて済むという利点を有する。またLEDは消費電力が小さいことから省エネルギー化の要請にも沿うものである。更にLEDは発熱量が小さく周りの部材に与える影響が少ないといった利点も併せ持つ。加えてLEDは長寿命であるからメンテナンスの面などからも有利なものとなる。更に言えば、LEDは振動、衝撃に強いことから信頼性の高い光源を構成できるといった利点もある。LEDのタイプは特に限定されず、砲弾型、ＳＭＤ型等、種々のものを採用できる。チップオンボード型のＬＥＤを用いても良い。ＬＥＤは広指向角のＬＥＤを用いることが好ましい。例えば、光源の放出光のうち、指向角が１０°〜２０°の光を室内照明に使用し、それ以外の指向角の光をスイッチ部付近の照明に使用する。尚、複数のLEDを光源として用いても良い。ＬＥＤの発光色は特に限定されず、白、赤、緑、青等の光を発生するＬＥＤを採用できる。 Hereinafter, the components of the illumination device according to the present invention will be described in detail.
(light source)
The light source used in the present invention is used as a light source of an illumination device that uses part of the emitted light for room illumination. For example, it is used as a light source of an illuminating device that illuminates a room such as a vehicle room, an elevator room, or a living room.
The type of the light source is not particularly limited, and for example, an LED, a light bulb (bulb), a fluorescent lamp, a cold cathode tube, or the like can be used as the light source here. Among them, it is preferable to use an LED. Since the LED is small, it has the advantage of requiring less space for the light source. In addition, LEDs are in line with the demand for energy saving because of their low power consumption. In addition, LEDs have the advantage of having a small amount of heat generation and little impact on surrounding members. In addition, since LEDs have a long life, they are advantageous from the standpoint of maintenance. Furthermore, since LEDs are resistant to vibrations and shocks, they have the advantage that a highly reliable light source can be constructed. The type of LED is not particularly limited, and various types such as a shell type and an SMD type can be adopted. A chip-on-board type LED may be used. It is preferable to use an LED having a wide directivity angle. For example, among the emitted light from the light source, light having a directivity angle of 10 ° to 20 ° is used for room illumination, and light having other directivity angles is used for illumination near the switch unit. A plurality of LEDs may be used as the light source. The emission color of the LED is not particularly limited, and an LED that generates light such as white, red, green, and blue can be employed.

（スイッチ部）
本発明で用いられるスイッチ部は、少なくとも一つのスイッチを備える。例えば、第１のスイッチと第２のスイッチとを備えるスイッチ部としても良い。スイッチ部の形状は特に限定されないが、スイッチの配置やスイッチの形状などを考慮して決定することができる。例えば平面視が、矩形、円形、楕円形などを採用できる。スイッチ部の形状は、スイッチ部の外周がスイッチの縁の一部に沿った形状であることが好ましい。例えば、スイッチ部がスイッチを一つ備える場合、スイッチの縁をスイッチ部のとなるように構成しても良い。 (Switch part)
The switch unit used in the present invention includes at least one switch. For example, it is good also as a switch part provided with a 1st switch and a 2nd switch. The shape of the switch portion is not particularly limited, but can be determined in consideration of the switch arrangement, the switch shape, and the like. For example, a rectangular shape, a circular shape, an elliptical shape, or the like can be adopted for the plan view. The shape of the switch part is preferably such that the outer periphery of the switch part is along a part of the edge of the switch. For example, when the switch unit includes one switch, the edge of the switch may be the switch unit.

スイッチ部が備えるスイッチの形状も特に限定されず、矩形、円形、楕円形等を採用できる。スイッチのタイプも特に限定されず、プッシュタイプ、シーソータイプなど周知のタイプを採用できる。スイッチ部が第１のスイッチと第２のスイッチとを備える場合、第１のスイッチを円形とし、第２のスイッチを矩形とするなど、互いに異なる形状としても良い。また、第１のスイッチをプッシュタイプとし、第２のスイッチをシーソータイプとするなど、第１のスイッチのタイプと第２のスイッチのタイプとを異なるものとしても良い。スイッチは上述の光源の点灯状態を制御するものではなく、他の装置を制御する。例えば、スポットライトの点灯状態を制御する。   The shape of the switch provided in the switch unit is not particularly limited, and a rectangle, a circle, an ellipse, or the like can be adopted. The type of switch is not particularly limited, and a known type such as a push type or a seesaw type can be adopted. When the switch unit includes the first switch and the second switch, the first switch may have a different shape, such as a circular shape and a second switch having a rectangular shape. Also, the first switch type and the second switch type may be different, for example, the first switch is a push type and the second switch is a seesaw type. The switch does not control the lighting state of the light source, but controls other devices. For example, the lighting state of the spotlight is controlled.

（導光体）
導光体は光透過性材料から構成される。ここで用いる光透過性材料としては、アクリル樹脂、ポリエチレンテレフタレート（ＰＥＴ）、ポリカーボネート樹脂、シリコーン樹脂、エポキシ樹脂等の合成樹脂や、ガラスなどの無機材料を採用することができる。
導光体は光源の光放出側に設けられ、第１光導入面と第１光放出面とを備える。第１光導入面は光源の光放出側に対向するように設けられ、光源の光の一部を導入する。第１光放出面はスイッチ部の外周の一部または全部に沿って形成され、第１光導入面から導入した光を放出する。第１光放出面の形状は特に限定されず、スイッチ部の外周に沿った均一な幅の帯状や、スイッチ部のスイッチ付近の外周に沿う部分の幅を広くした帯状など、スイッチ部の視認性や照明装置の装飾性等を考慮して種々の形状を採用できる。尚、第１光放出面をスイッチ部の外周に沿って島状に不連続に設けても良い。このとき、スイッチ部の角部に沿って第１光放出面を形成することが好ましい。より好ましくはスイッチ部の少なくとも二つの角部に沿って第１光放出面を形成する。スイッチ部の位置が把握しやすくなるからである。 (Light guide)
The light guide is made of a light transmissive material. As the light transmissive material used here, synthetic resin such as acrylic resin, polyethylene terephthalate (PET), polycarbonate resin, silicone resin, epoxy resin, or inorganic material such as glass can be employed.
The light guide is provided on the light emission side of the light source and includes a first light introduction surface and a first light emission surface. The first light introduction surface is provided to face the light emission side of the light source, and introduces a part of the light of the light source. The first light emitting surface is formed along part or all of the outer periphery of the switch unit, and emits light introduced from the first light introducing surface. The shape of the first light emission surface is not particularly limited, and the visibility of the switch unit is not limited, such as a strip having a uniform width along the outer periphery of the switch unit, or a strip having a wider portion along the outer periphery of the switch unit near the switch. Various shapes can be employed in consideration of the decorativeness of the lighting device and the like. The first light emitting surface may be discontinuously provided in an island shape along the outer periphery of the switch portion. At this time, it is preferable to form the first light emission surface along the corner of the switch portion. More preferably, the first light emission surface is formed along at least two corners of the switch portion. This is because it becomes easier to grasp the position of the switch portion.

光源の光放出側全体を覆うように導光体を設けることが好ましい。このとき、導光体は第１光導入面とは異なる第２光導入面と、第１光放出面とは異なる第２光放出面とを備える。導光体は、光源の光のうち、主として室内照明に用いられる光を第２光導入面から導入し、導入光を第２光放出面から放出する。かかる構成によると、光源の光のうち、室内照明に用いられる光も導光体を通って放出されることとなる。   It is preferable to provide a light guide so as to cover the entire light emission side of the light source. At this time, the light guide includes a second light introduction surface that is different from the first light introduction surface and a second light emission surface that is different from the first light emission surface. The light guide body mainly introduces light used for indoor illumination from the light source surface through the second light introduction surface and emits the introduction light from the second light emission surface. According to such a configuration, light used for room illumination out of light from the light source is also emitted through the light guide.

本発明の一の実施態様では、導光体はスイッチ部用の開口部を備える。スイッチ部用の開口部を利用してスイッチが備えられる。スイッチ部用の開口部の光源側壁面は受光した光源の光を導光体の縁部方向へ反射するような傾斜を有することが好ましい。かかる構成によると、導光体に導入された光が当該壁面を通って導光体外へ漏洩することを防止できる。即ち、光の有効利用が図られ、結果として第１光放出面から放出される光の輝度が高まる。また、開口部の光源側壁面による反射光が導光体の縁部方向へ進行するため導光体内の光の輝度が均一化され、第１光放出面から放出される光の輝度が均一化される。   In one embodiment of the invention, the light guide comprises an opening for the switch part. A switch is provided using the opening for the switch unit. It is preferable that the light source side wall surface of the opening for the switch portion has an inclination that reflects the light of the received light source toward the edge of the light guide. According to this configuration, it is possible to prevent light introduced into the light guide from leaking out of the light guide through the wall surface. That is, the light is effectively used, and as a result, the brightness of the light emitted from the first light emitting surface is increased. In addition, since the reflected light from the light source side wall surface of the opening proceeds toward the edge of the light guide, the brightness of the light in the light guide is made uniform, and the brightness of the light emitted from the first light emitting surface is made uniform. Is done.

導光体の第１光放出面は拡散処理が施されていることが好ましい。このようにすることにより、第１光放出面からの放出光が拡散されるため、第１光放出面から放出される光の輝度が均一化される。また、つや消し感のある発光態様が得られる。第１光放出面には拡散処理を施さず、導光体縁部の反射面に拡散処理を施してもよい。かかる態様では、光が外部放射される面が平滑であるから、透明感のある発光態様となる。拡散処理の方法としては、シボ処理、光拡散フィルムの貼付など、周知の方法を採用できる。尚、第２光放出面の形状は特に限定されず、凸レンズ形状等を採用できる。   The first light emission surface of the light guide is preferably subjected to a diffusion treatment. By doing so, since the light emitted from the first light emitting surface is diffused, the luminance of the light emitted from the first light emitting surface is made uniform. Moreover, the luminescent aspect with a matte feeling is obtained. The first light emitting surface may not be subjected to diffusion treatment, but may be subjected to diffusion treatment on the reflection surface at the edge of the light guide. In this aspect, since the surface from which light is radiated to the outside is smooth, the light emission aspect is transparent. As a method for the diffusion treatment, a well-known method such as a graining treatment or application of a light diffusion film can be employed. The shape of the second light emission surface is not particularly limited, and a convex lens shape or the like can be adopted.

導光体が蛍光体を含んでいてもよい。光源の光を受けて蛍光するものであれば有機系、無機系を問わず、所望の蛍光色を発する蛍光体を適宜選択して使用することができることができる。有機系の蛍光体を用いることによりクリアー感のある蛍光色の光を得ることができる。無機系の蛍光体を用いると艶消し感のある蛍光色の光を得ることができる。
また、第１光放出面及び／又は第２光放出面に光透過性フィルムを貼付しても良い。所望の色を有するフィルムを貼付することにより、所望の色の光を第１光放出面及び／又は第２光放出面から放出させることができる。 The light guide may contain a phosphor. Any phosphor that emits a desired fluorescent color can be appropriately selected and used regardless of whether it is organic or inorganic as long as it receives light from the light source and fluoresces. By using an organic phosphor, it is possible to obtain fluorescent light with a clear feeling. When an inorganic phosphor is used, fluorescent light with a matte feeling can be obtained.
Further, a light transmissive film may be attached to the first light emitting surface and / or the second light emitting surface. By sticking a film having a desired color, light of a desired color can be emitted from the first light emitting surface and / or the second light emitting surface.

以下に、本発明における照明装置の実施例を用いて本発明をより詳細に説明する。   Hereinafter, the present invention will be described in more detail with reference to embodiments of the lighting device according to the present invention.

本発明の一の実施例である照明装置１の正面図を図１に示し、図１におけるＡ−Ａ断面図を図２に示す。また導光体２の正面図を図３に示し、図３におけるＢ−Ｂ断面図を図４に示す。
照明装置１は車両室内天井に設置される。照明装置１はスイッチ部３、マップランプ５１及び５２、光源７並びに導光体２を備える。スイッチ部３は、枠９に固定された本体６の略中央に備えられる。スイッチ部３にはスイッチ３１及び３２が、後述する導光体２のスイッチ部用の開口部２８及び２９を利用して設置される。スイッチ部３の外周は、スイッチ３１の上縁、下縁及び片方の側縁と、スイッチ３２の上縁、下縁及び片方の側縁とに沿っている。スイッチ３１及び３２は、スイッチ部３の左右に備えられるマップランプ５１及び５２の点灯状態をそれぞれ制御する。また、スイッチ部３の中央部には円形の開口部を有する配光制御用のカバー１０が備えられる。カバー１０の開口部からは導光体２の第２光放出面２１が露出している。光源７は第２光放出面２１の後方に設けられる。光源７はＳＭＤ（表面実装）型のＬＥＤであって、光源７の光軸が基板８に略垂直になるように基板８上に設置される。光源７は車幅灯と連動してその発光状態が制御される。 FIG. 1 is a front view of a lighting device 1 according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line AA in FIG. Moreover, the front view of the light guide 2 is shown in FIG. 3, and BB sectional drawing in FIG. 3 is shown in FIG.
The lighting device 1 is installed on the vehicle interior ceiling. The lighting device 1 includes a switch unit 3, map lamps 51 and 52, a light source 7, and a light guide 2. The switch unit 3 is provided at the approximate center of the main body 6 fixed to the frame 9. Switches 31 and 32 are installed in the switch unit 3 by using openings 28 and 29 for the switch unit of the light guide 2 described later. The outer periphery of the switch unit 3 is along the upper edge, lower edge, and one side edge of the switch 31, and the upper edge, lower edge, and one side edge of the switch 32. The switches 31 and 32 control the lighting states of the map lamps 51 and 52 provided on the left and right of the switch unit 3, respectively. In addition, a light distribution control cover 10 having a circular opening is provided at the center of the switch unit 3. The second light emission surface 21 of the light guide 2 is exposed from the opening of the cover 10. The light source 7 is provided behind the second light emitting surface 21. The light source 7 is an SMD (surface mount) type LED, and is installed on the substrate 8 so that the optical axis of the light source 7 is substantially perpendicular to the substrate 8. The light source 7 is controlled in light emission state in conjunction with the vehicle width lamp.

導光体２は略板状であって中央部は***しており、光源７の光放出側全体を覆うように設置される（図３及び４参照）。導光体２の両縁部４は、中央部の***した方向と同方向へ略垂直に折曲している。導光体２は、光源７の側面に対向する第１光導入面２３と、光源７の上面に対向する第２光導入面２４とを備える。導光体２はさらに、第２光導入面２４の反対側の面に第２光放出面２１を備え、縁部４に反射面２５を備え、及び導光体２の縁部上面に第１光放出面２２を備える。第１光放出面２２はスイッチ部の全外周に略沿うように形成されている。導光体２はスイッチ部用の開口部２８及び２９を備える。開口部２８及び２９の光源７側壁面は壁面中央で折曲し、光源７側へＶ字状に傾斜している。尚、第１光放出面２２には拡散処理が施されており、第２光放出面の形状は凸レンズ形状である。   The light guide 2 is substantially plate-shaped and has a raised central portion, and is installed so as to cover the entire light emission side of the light source 7 (see FIGS. 3 and 4). Both edge portions 4 of the light guide body 2 are bent substantially perpendicularly in the same direction as the protruding direction of the central portion. The light guide 2 includes a first light introduction surface 23 that faces the side surface of the light source 7 and a second light introduction surface 24 that faces the upper surface of the light source 7. The light guide 2 further includes a second light emission surface 21 on the surface opposite to the second light introduction surface 24, a reflection surface 25 on the edge 4, and a first on the upper surface of the edge of the light guide 2. A light emitting surface 22 is provided. The first light emitting surface 22 is formed so as to substantially follow the entire outer periphery of the switch portion. The light guide 2 includes openings 28 and 29 for the switch part. The side surfaces of the light source 7 of the openings 28 and 29 are bent at the center of the wall surface and inclined in a V shape toward the light source 7 side. The first light emitting surface 22 is subjected to a diffusion process, and the second light emitting surface has a convex lens shape.

以下に照明装置１の使用態様を説明する。夜間等に車幅灯と連動して光源７が発光する。光源７の上面から放出された光は、主として光源７の上面に対向する導光体２の第２光導入面２４から導光体２に導入される。第２光導入面２４から導入された光は第２光放出面２１から放出される。第２光放出面２１は凸レンズ形状であり放出される光は集光し、シフトレバー付近を照明する。一方、光源７の側面から放出された光は、主として導光体２の側面に対向する第１光導入面２３から導光体２内に導入される。第１光導入面２３から導入された光の一部は、スイッチ部用の開口部２８及び２９の壁面２６及び２７の方向へ進行し、壁面２６及び２７は受光した光を導光体２の縁部４方向へ反射する（図３及び図４参照）。第１光導入面２３から導入された光のその他の光は直接又は、導光体２内で屈折を繰り返して縁部４方向へを進行する。縁部４方向へ進行した光は反射面２５により第１光放出面２２方向へ反射され、第１光放出面２２から放出される（図４参照）。第１光放出面２２には拡散処理が施されているため、第１光放出面２２から放出された光は拡散する。そのため、スイッチ部３の外周付近は均一化された輝度で発光することとなる。
尚、反射面２５に拡散処理を施してもよい。例えば、シボ、白色テープ、白色印刷により拡散処理を施してもよい。 Below, the usage aspect of the illuminating device 1 is demonstrated. The light source 7 emits light in conjunction with the vehicle width lamp at night or the like. The light emitted from the upper surface of the light source 7 is mainly introduced into the light guide 2 from the second light introduction surface 24 of the light guide 2 facing the upper surface of the light source 7. The light introduced from the second light introduction surface 24 is emitted from the second light emission surface 21. The second light emitting surface 21 has a convex lens shape, and the emitted light is condensed to illuminate the vicinity of the shift lever. On the other hand, light emitted from the side surface of the light source 7 is mainly introduced into the light guide 2 from the first light introduction surface 23 facing the side surface of the light guide 2. Part of the light introduced from the first light introduction surface 23 travels in the direction of the wall surfaces 26 and 27 of the opening portions 28 and 29 for the switch unit, and the wall surfaces 26 and 27 transmit the received light to the light guide 2. Reflected in the direction of the edge 4 (see FIGS. 3 and 4). The other light of the light introduced from the first light introduction surface 23 travels in the direction of the edge 4 directly or repeatedly refracted in the light guide 2. The light traveling in the direction of the edge 4 is reflected by the reflecting surface 25 toward the first light emitting surface 22 and emitted from the first light emitting surface 22 (see FIG. 4). Since the first light emitting surface 22 is subjected to a diffusion process, the light emitted from the first light emitting surface 22 diffuses. Therefore, the vicinity of the outer periphery of the switch unit 3 emits light with uniform luminance.
The reflection surface 25 may be subjected to a diffusion process. For example, the diffusion process may be performed by embossing, white tape, or white printing.

以上のように、照明装置１は夜間等に車幅灯と連動して、シフトレバー付近を照明すると同時にスイッチ部３の外周付近を発光させる。これにより、車両室内が暗い時でもスイッチ３１及び３２の位置を容易に把握できることとなり、マップランプ５１及び５２使用時の操作性が向上する。また、照明装置１によると、室内照明用光源７の光の一部を利用してスイッチ部３の外周付近を発光させるため、スイッチ部３の外周付近を発光させるための光源を別途設ける必要がなく、光源用のスペースが少なくて済む。さらに、室内照明用光源７とスイッチ部３の外周付近を発光させるための光源とを共通化することで部品数が減り、低コスト化及び取り付け作業性の向上が達成される。   As described above, the lighting device 1 illuminates the vicinity of the shift lever and simultaneously emits light near the outer periphery of the switch unit 3 in conjunction with the vehicle width lamp at night or the like. Thereby, even when the vehicle interior is dark, the positions of the switches 31 and 32 can be easily grasped, and the operability when using the map lamps 51 and 52 is improved. Further, according to the lighting device 1, since a part of the light from the indoor illumination light source 7 is used to emit light near the outer periphery of the switch unit 3, it is necessary to separately provide a light source for emitting light near the outer periphery of the switch unit 3. Less space for the light source. Furthermore, by sharing the indoor illumination light source 7 and the light source for emitting light in the vicinity of the outer periphery of the switch unit 3, the number of parts can be reduced, and the cost can be reduced and the mounting workability can be improved.

本発明の他の実施例である照明装置１００の正面図を図５に示し、図５におけるＣ−Ｃ断面図を図６に示す。導光体２００の正面図を図７に示した。また、光源７付近の一部拡大図を図８に示す。尚、以下の説明において使用する図面において、上述の照明装置１と同一の部材には同一の符号を付してその説明を省略する。
照明装置１００は居室内の壁に設置される。照明装置１００は、カバー６０の中央部にスイッチ部３００と、カバー６０下部の内部の基板８上に光源７と、及び光源７の光放出側を覆うように導光体２００とを備える。スイッチ部３００は３つのシーソータイプのスイッチ３１０、３１１及び３１２を備える。各スイッチ３１０、３１１及び３１２は、制御線３０４と接点３０５、３０６及び３０７とのそれぞれの電気的接続状態をオン又はオフとすることで他の室内照明の点灯状態を制御する。スイッチの制御線３０４は後述の導光体２００の開口部２８０を利用して電源等と接続される。光源７はその光軸が基板８と略垂直であって、下方向に光が放出されるように設置される。
導光体２００は略板状であり、下部に光源７の光放出側全体を覆う部分を有する。導光体２００はスイッチ部３００の外周に沿って第１光放出面２２０を備え、第１光導入面２３、第２光導入面２４及び第２光放出面２１を備える。導光体２００はスイッチ部３００の上端面及び側面に略沿って折曲しており、光源７の光を第１光放出面２２０方向に反射するように傾斜した第１反射面２５１を備える。さらに導光体２００は第１光放出面２３から導入された光を第１反射面２５１の方向に反射するように傾斜した第２反射面２５２及び第３反射面２５３を備える。導光体２００の板状部分の中央部には制御線３０４用の開口部２８０を備える。開口部２８０の光源７側壁面２６０は壁面中央で折曲し、光源７側へＶ字状に傾斜している（図７参照）。 The front view of the illuminating device 100 which is another Example of this invention is shown in FIG. 5, and CC sectional drawing in FIG. 5 is shown in FIG. A front view of the light guide 200 is shown in FIG. A partially enlarged view of the vicinity of the light source 7 is shown in FIG. In addition, in drawing used in the following description, the same code | symbol is attached | subjected to the same member as the above-mentioned illuminating device 1, and the description is abbreviate | omitted.
The lighting device 100 is installed on the wall in the living room. The lighting device 100 includes a switch unit 300 at the center of the cover 60, a light source 7 on the substrate 8 inside the cover 60, and a light guide 200 so as to cover the light emission side of the light source 7. The switch unit 300 includes three seesaw type switches 310, 311 and 312. Each of the switches 310, 311 and 312 controls the lighting state of the other indoor lighting by turning on or off the respective electrical connection states of the control line 304 and the contacts 305, 306 and 307. The switch control line 304 is connected to a power source or the like using an opening 280 of the light guide 200 described later. The light source 7 is installed so that its optical axis is substantially perpendicular to the substrate 8 and light is emitted downward.
The light guide 200 is substantially plate-shaped, and has a portion covering the entire light emission side of the light source 7 at the bottom. The light guide 200 includes a first light emission surface 220 along the outer periphery of the switch unit 300, and includes a first light introduction surface 23, a second light introduction surface 24, and a second light emission surface 21. The light guide 200 is bent substantially along the upper end surface and the side surface of the switch unit 300, and includes a first reflecting surface 251 that is inclined so as to reflect the light of the light source 7 toward the first light emitting surface 220. The light guide 200 further includes a second reflecting surface 252 and a third reflecting surface 253 that are inclined so as to reflect light introduced from the first light emitting surface 23 toward the first reflecting surface 251. An opening 280 for the control line 304 is provided at the center of the plate-like portion of the light guide 200. The side wall surface 260 of the light source 7 of the opening 280 is bent at the center of the wall surface and is inclined in a V shape toward the light source 7 (see FIG. 7).

次に照明装置１００の使用態様を説明する。夜間等に他の室内照明と連動して、他の室内照明が消灯している時に光源７が発光する。光源７の上面から放出された光は、主として光源７の上面に対向する導光体２００の第２光導入面２４から導光体２００に導入され、第２光放出面２１から放出される。第２光放出面２１は凸レンズ面であり放出された光は集光し、照明装置１００の下部を照明する。一方、光源７の側面から放出された光は、光源７の側面に対向する第１光導入面２３から導光体２００内に導入される。第１光導入面２３から導入された光の一部は第２反射面２５２の方向へ進む（図８参照）。第２反射面２５２は受光した光を第１反射面２５１の方向に反射する。第２反射面２５２により反射された光の一部は開口部２８０の光源７側の壁面２６０へ進み、壁面２６０は受光した光を第１反射面２５１の方向へ反射する。第１光導入面２３から導入された光の他の一部は直接又は屈折を繰り返し第１光放出面２２０の方向へ進む（図８参照）。第１光導入面２３から導入された光のさらに他の一部は第３反射面２５３の方向へ進む（図７参照）。第３反射面２５３は受光した光を第１反射面２５１の方向に反射する。第３反射面２５３により反射された光の一部は開口部２８０の光源７側の壁面２６０へ進み、壁面２６０は受光した光を第１反射面２５１の方向へ反射する。第１反射面２５１は受光した光を第１光放出面２２０の方向へ反射し、第１反射面２５１による反射光は第１光放出面２２０から放出される。第１光放出面２２０は拡散処理が施されており放出光は拡散するため、スイッチ部３００の外周付近が均一な輝度で発光する。   Next, how the lighting device 100 is used will be described. The light source 7 emits light in conjunction with other indoor lighting at night or the like when the other indoor lighting is turned off. The light emitted from the upper surface of the light source 7 is mainly introduced into the light guide 200 from the second light introduction surface 24 of the light guide 200 facing the upper surface of the light source 7 and is emitted from the second light emission surface 21. The second light emitting surface 21 is a convex lens surface, and the emitted light is collected and illuminates the lower part of the illumination device 100. On the other hand, the light emitted from the side surface of the light source 7 is introduced into the light guide 200 from the first light introduction surface 23 facing the side surface of the light source 7. A part of the light introduced from the first light introduction surface 23 travels in the direction of the second reflection surface 252 (see FIG. 8). The second reflecting surface 252 reflects the received light in the direction of the first reflecting surface 251. Part of the light reflected by the second reflecting surface 252 travels to the wall surface 260 on the light source 7 side of the opening 280, and the wall surface 260 reflects the received light in the direction of the first reflecting surface 251. The other part of the light introduced from the first light introduction surface 23 is directly or repeatedly refracted and proceeds in the direction of the first light emission surface 220 (see FIG. 8). Still another part of the light introduced from the first light introduction surface 23 travels in the direction of the third reflection surface 253 (see FIG. 7). The third reflecting surface 253 reflects the received light in the direction of the first reflecting surface 251. Part of the light reflected by the third reflecting surface 253 proceeds to the wall surface 260 on the light source 7 side of the opening 280, and the wall surface 260 reflects the received light in the direction of the first reflecting surface 251. The first reflecting surface 251 reflects the received light in the direction of the first light emitting surface 220, and the reflected light from the first reflecting surface 251 is emitted from the first light emitting surface 220. Since the first light emitting surface 220 has been subjected to diffusion treatment and the emitted light is diffused, the vicinity of the outer periphery of the switch unit 300 emits light with uniform luminance.

以上のように、照明装置１００は夜間等に他の室内照明装置と連動して、照明装置１００の下部壁面及び床面を照明すると同時にスイッチ部３００の外周付近を発光させる。これにより、暗い室内でもスイッチ３１０、３２０及び３３０の位置が容易に把握できることとなり、スイッチの使い勝手が向上する。   As described above, the lighting device 100 interlocks with other indoor lighting devices at night or the like to illuminate the lower wall surface and floor surface of the lighting device 100 and simultaneously emit light near the outer periphery of the switch unit 300. As a result, the positions of the switches 310, 320 and 330 can be easily grasped even in a dark room, and the usability of the switches is improved.

この発明は上記発明の実施の態様及び実施例の説明に何ら限定されるものではない。特許請求の範囲を逸脱せず、当業者が容易に想到できる範囲で種々の変形態様もこの発明に含まれる。   The present invention is not limited to the description of the embodiments and examples of the invention described above. Various modifications are also included in the present invention as long as those skilled in the art can easily conceive without departing from the scope of the claims.

本発明の照明装置は、例えば、車両室内のマップランプ点灯制御スイッチ照明、エレベータ操作パネル照明、居室内照明スイッチ照明等に好適に用いられる。   The illumination device of the present invention is suitably used for, for example, a map lamp lighting control switch illumination in a vehicle room, an elevator operation panel illumination, an indoor illumination switch illumination, and the like.

以下、次の事項を開示する。
１１． 前記第１光放出面に光拡散処理が施されている、請求項１〜４のいずれかに記載の照明装置。
１２． 前記スイッチ部が二つ以上のスイッチを備える、請求項１〜４又は１１．のいずれかに記載の照明装置。
１３． 前記第１光放出面が、前記スイッチ部の少なくとも二つの角部に沿って形成される、請求項１〜４、１１．又は１２．のいずれかに記載の照明装置。
１４． 前記スイッチ部が車両室内マップランプの点灯制御に使用される、請求項１〜４、又は１１．〜１３．のいずれかに記載の照明装置。
１５． 前記光源がＬＥＤである請求項１〜４又は１１．〜１４．のいずれかに記載の照明装置。 The following matters are disclosed below.
11. The lighting device according to claim 1, wherein a light diffusion process is performed on the first light emission surface.
12 10. The switch unit includes two or more switches. The illuminating device in any one of.
13. The first light emitting surface is formed along at least two corners of the switch unit. Or 12. The illuminating device in any one of.
14 10. The switch section is used for lighting control of a vehicle interior map lamp. -13. The illuminating device in any one of.
15. 10. The light source is an LED. -14. The illuminating device in any one of.

図１は本発明の他の実施例である照明装置１の正面図である。FIG. 1 is a front view of a lighting apparatus 1 according to another embodiment of the present invention. 図２は図１におけるＡ−Ａ断面図である。2 is a cross-sectional view taken along line AA in FIG. 図３は照明装置１に用いられる導光体２の正面図である。FIG. 3 is a front view of the light guide 2 used in the lighting device 1. 図４は図３におけるＢ−Ｂ断面図である。4 is a cross-sectional view taken along the line BB in FIG. 図５は本発明の他の実施例である照明装置１００の正面図である。FIG. 5 is a front view of a lighting apparatus 100 according to another embodiment of the present invention. 図６は図５におけるＣ−Ｃ断面図である。6 is a cross-sectional view taken along the line CC in FIG. 図７は導光体２００の正面図である。FIG. 7 is a front view of the light guide 200. 図８は図６における光源７付近の一部拡大図である。FIG. 8 is a partially enlarged view of the vicinity of the light source 7 in FIG.

符号の説明Explanation of symbols

１ １００ 照明装置
２ ２００ 導光体
２１ 第２光放出面
２２ 第１光放出面
２３ 第１光導入面
２４ 第２光導入面
２５ 反射面
３ ３００ スイッチ部
３１ ３２ ３１０ ３１１ ３１２ スイッチ
７ 光源
２８ ２９ ２８０ スイッチ用開口部 DESCRIPTION OF SYMBOLS 1 100 Illuminating device 2 200 Light guide 21 2nd light emission surface 22 1st light emission surface 23 1st light introduction surface 24 2nd light introduction surface 25 Reflecting surface 3 300 Switch part 31 32 310 311 312 Switch 7 Light source 28 29 280 Switch opening

Claims (3)

放出光の一部が室内照明に使用されるＬＥＤ光源と、
前記光源の点灯制御以外に使用されるスイッチ部と、
前記光源の放出光の他の一部を導入し、前記ＬＥＤ光源の側面に対向する第１光導入面と、前記スイッチ部の外周の少なくとも一部に沿って形成された第１光放出面と、前記光源の放出光の一部を導入し、前記ＬＥＤ光源の上面に対向する第２光導入面と、前記第２光導入面の反対側の面に設けられた第２光放出面と、を備える導光体と、及び、
第２光放出面が露出する開口部を有するカバーと、
を備え、
前記導光体が、略板状であって中央部が***した***部を有し、前記光源の光放出側全体を覆うように設けられ、
前記導光体の両縁部は、前記***部が突出する方向と同方向へ略垂直に折曲し、 前記両縁部が反射面を備えるとともに、前記両縁部上面に前記第１光放出面が位置し、
前記***部が凸レンズ形状であり、その表面が前記第２光放出面となり、
前記導光体が、前記スイッチ部用の開口部を備え、該開口部の前記光源側壁面が、前記第１光導入面から導入された光の一部を反射する、照明装置。 An LED light source in which part of the emitted light is used for room lighting;
A switch unit used other than lighting control of the light source ;
Introducing another part of the emitted light before Symbol light source, a first light inlet surface facing the side surface of the LED light source, the first light emitting surface formed along at least a portion of the outer periphery of the switch unit A second light introduction surface that introduces a part of the emitted light of the light source and faces the upper surface of the LED light source; and a second light emission surface provided on a surface opposite to the second light introduction surface; a light guide comprising, and,
A cover having an opening through which the second light emitting surface is exposed;
Equipped with a,
The light guide is substantially plate-shaped and has a raised portion with a raised central portion, and is provided so as to cover the entire light emission side of the light source;
Both edge portions of the light guide body are bent substantially perpendicularly in the same direction as the protruding portion protrudes, the both edge portions are provided with reflection surfaces, and the first light emission is provided on the upper surfaces of both edge portions. The face is located,
The raised portion has a convex lens shape, and the surface thereof becomes the second light emitting surface,
The illuminating device, wherein the light guide includes an opening for the switch portion, and the light source side wall surface of the opening reflects part of the light introduced from the first light introduction surface . 前記第１光放出面が前記スイッチ部の全外周に沿って形成される、請求項１に記載の照明装置。The lighting device according to claim 1, wherein the first light emission surface is formed along an entire outer periphery of the switch unit. 車両用であることを特徴とする、請求項１又は２に記載の照明装置。The lighting device according to claim 1, wherein the lighting device is for a vehicle.
JP2004184909A 2004-06-23 2004-06-23 Lighting device Expired - Fee Related JP4301093B2 (en)

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JP5245806B2 (en) * 2008-12-23 2013-07-24 東芝ライテック株式会社 Light source unit and lighting apparatus
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