JP2009139797A - Light guide device - Google Patents

Light guide device Download PDF

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JP2009139797A
JP2009139797A JP2007318078A JP2007318078A JP2009139797A JP 2009139797 A JP2009139797 A JP 2009139797A JP 2007318078 A JP2007318078 A JP 2007318078A JP 2007318078 A JP2007318078 A JP 2007318078A JP 2009139797 A JP2009139797 A JP 2009139797A
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light
light guide
space
connecting portion
guides
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JP5041230B2 (en
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Takashi Hori
隆 堀
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Nippon Seiki Co Ltd
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Nippon Seiki Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a light guide device capable of suppressing propagation of light while reducing the number of parts. <P>SOLUTION: The light guide device is equipped with a plurality of light guide parts 41 to 44 composed of light transmissive material and having a light entering surface 45, a light outgoing surface 46 and a light guide surface 47. The light guide parts 41 to 44 comprise the first and second light guide parts 41 and 42 adjacent to each other while leaving a first space part S1 in between and coupled through a first coupling part 48 bypassing the first space part S1, and the third and fourth light guide parts 43 and 44 adjacent to each other while leaving a second space part S2 in between and coupled through a second coupling part 49 bypassing the second space part S2. The third light guide part 43 is arranged in the first space part S1 and the second light guide part 42 is arranged in the second space part S2 so that the light outgoing surface 46 of the third light guide part 43 may be located between the respective light outgoing surfaces 46 of the first and second light guide parts 41 and 42, and the light outgoing surface 46 of the second light guide part 42 may be located between the respective light outgoing surfaces 46 of the third and fourth light guide parts 43 and 44. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、例えば車両用の表示装置やスイッチ装置に適用される導光装置に関し、特に各種インジケータマークを照明したり、それ自体が視認部品として発光表示をなす導光装置に関する。   The present invention relates to a light guide device applied to, for example, a display device or a switch device for a vehicle, and more particularly to a light guide device that illuminates various indicator marks or emits light as a visual component itself.

この種の表示装置として、例えば特許文献１に記載された導光装置が知られている。この導光装置は、一列に並んだインジケータマークと、個々のインジケータマークに対応する複数の光源と、これら光源と各インジケータマークの間に配置された複数の導光部とでなり、これら導光部は、光源に対向する入光面と、入光面から入光した光を出光させる出光面と、入光面から入光した光を出光面に導く導光面とを有すると共に、隣接する各導光部の各出光面どうしが一列に並ぶように連結部を通じて連結され、各光源の発する光を対応するインジケータマークに導光して発光させるものである。
特開２００４−２３３４６６号公報 As this type of display device, for example, a light guide device described in Patent Document 1 is known. The light guide device includes indicator marks arranged in a line, a plurality of light sources corresponding to the individual indicator marks, and a plurality of light guide portions arranged between the light sources and the indicator marks. The unit includes a light incident surface facing the light source, a light exit surface that emits light incident from the light incident surface, and a light guide surface that guides light incident from the light incident surface to the light exit surface, and is adjacent to the light exit surface. The light output surfaces of the light guides are connected through a connecting part so as to be aligned in a line, and light emitted from each light source is guided to a corresponding indicator mark to emit light.
JP 2004-233466 A

ところで前記特許文献１に記載の導光装置は、隣接する導光部どうしを各出光面と同一平面をなす連結部を通じて一列に連結する構造であるため、連結部を通じて隣接する導光部に光が伝播しやすく、本来発光させたくない導光体（インジケータ）が発光してしまう疑似点灯が発生しやすいという問題がある。一方、連結部による連結構造を廃止することにより、光の伝播を抑えることも考えられるが、部品点数の増加による組み付け性の悪化を避けることができない。   By the way, since the light guide device described in Patent Document 1 has a structure in which adjacent light guide portions are connected in a row through a connection portion that is flush with each light exit surface, light is transmitted to the adjacent light guide portion through the connection portion. There is a problem in that pseudo-lighting is likely to occur, in which light guides (indicators) that are not desired to emit light are likely to emit light. On the other hand, it is conceivable to suppress the propagation of light by eliminating the connecting structure by the connecting portion, but it is impossible to avoid deterioration in assembling property due to an increase in the number of parts.

本発明は前述した問題点に着目し、部品点数を少なくしながら光の伝播を抑えることができる導光装置を提供するものである。   The present invention pays attention to the above-described problems, and provides a light guide device that can suppress the propagation of light while reducing the number of components.

本発明は、前述した課題を解決するため、透光性材料からなり、入光面と、この入光面を通じて内部に導入した光を出光させる出光面と、前記入光面を通じて導入した光を前記出光面に導く導光面とを有する導光部を複数備えてなる導光装置において、前記導光部が空間部を隔てて隣接すると共に前記空間部を迂回する連結部を通じて連結される第１，第２の導光部と、単一の他の導光部とでなり、前記第１，第２の導光部の前記各出光面間に前記他の導光部の前記出光面が位置するように前記空間部に前記他の導光体を配置してなることを特徴とする。   In order to solve the above-described problems, the present invention is made of a light-transmitting material, and includes a light incident surface, a light exit surface that emits light introduced inside through the light incident surface, and light introduced through the light incident surface. A light guide device comprising a plurality of light guide parts having a light guide surface leading to the light exit surface, wherein the light guide parts are connected through a connecting part adjacent to and spaced from the space part. 1 and the 2nd light guide part, and a single other light guide part, and the said light output surface of the said other light guide part is between each said light output surface of the said 1st, 2nd light guide part. The other light guide is disposed in the space so as to be positioned.

また本発明は、前述した課題を解決するため、透光性材料からなり、入光面と、この入光面を通じて内部に導入した光を出光させる出光面と、前記入光面を通じて導入した光を前記出光面に導く導光面とを有する導光部を複数個備えてなる導光装置において、前記導光部が第１の空間部を隔てて隣接すると共に前記第１の空間部を迂回する第１の連結部を通じて連結される第１，第２の導光部と、第２の空間部を隔てて隣接すると共に前記第２の空間部を迂回する第２の連結部を通じて連結される第３，第４の導光部とでなり、前記第１，第２の導光部の前記各出光面間に前記第３の導光部または前記第４の導光部のいずれか一方の前記出光面が位置すると共に前記第３，第４の導光部の前記各出光面間に前記第１の導光部または前記第２の導光部のいずれか一方の前記出光面が位置するように前記第１の空間部に前記第３の導光部または前記第４の導光部のいずれか一方を配置すると共に前記第２の空間部に前記第１の導光部または前記第２の導光部のいずれか一方を配置してなることを特徴とする。   In order to solve the above-described problems, the present invention is made of a light-transmitting material, and includes a light incident surface, a light exit surface that emits light introduced therein through the light incident surface, and light introduced through the light incident surface. In the light guide device comprising a plurality of light guide portions each having a light guide surface for guiding the light to the light exit surface, the light guide portions are adjacent to each other across the first space portion and bypass the first space portion. The first and second light guides connected through the first connecting part are connected through the second connecting part that is adjacent to the second space part and bypasses the second space part. The third and fourth light guides, and between the light exit surfaces of the first and second light guides, either the third light guide or the fourth light guide. The light exit surface is located, and the first light guide portion or the second light guide portion is disposed between the light exit surfaces of the third and fourth light guide portions. Either the third light guide portion or the fourth light guide portion is disposed in the first space portion so that the light exit surface of any one of the light portions is positioned, and the second space. One of the first light guide part and the second light guide part is arranged in the part.

また本発明は、前記第１の連結部と前記第２の連結部とが前記入光面と前記出光面との対向方向に沿って重なるように組み合わされており、前記第１の連結部と前記第２の連結部との接触箇所に突出部が設けられていることを特徴とする。   In the present invention, the first connecting portion and the second connecting portion are combined so as to overlap along a facing direction of the light incident surface and the light emitting surface, and the first connecting portion and The protrusion part is provided in the contact location with the said 2nd connection part, It is characterized by the above-mentioned.

また本発明は、前記導光部において、前記連結部が前記導光面の中程で前記導光部と接続されており、この前記連結部との接続箇所から前記入光面に至る前記導光面の所定箇所に前記出光面から前記連結部に至る光の透過を規制する透過規制部を設けてなることを特徴とする。   According to the present invention, in the light guide portion, the connecting portion is connected to the light guide portion in the middle of the light guide surface, and the light guide portion from the connection portion with the connecting portion to the light incident surface. A transmission restricting portion that restricts transmission of light from the light exit surface to the connecting portion is provided at a predetermined position on the light surface.

また本発明は、発光体を有し、前記導光部は、前記入光面側よりも前記出光面側が幅広となるように前記導光面が前記発光体の発光中心軸に対して傾斜してなることを特徴とする。   Further, the present invention includes a light emitter, and the light guide portion is inclined with respect to a light emission central axis of the light emitter so that the light exit surface side is wider than the light incident surface side. It is characterized by.

本発明によれば、初期の目的を達成することができ、部品点数を少なくしながら光の伝播を抑えることができる。   According to the present invention, the initial object can be achieved, and the propagation of light can be suppressed while reducing the number of parts.

以下、本発明の実施の形態について添付図面を用いて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

図１〜図４は、本発明による導光装置を例えば車両用の表示装置に適用した第１の実施形態を示すもので、図１は表示装置の断面図、図２は表示板を取り除いた状態を示す正面図、図３は図２の分解正面図、図４は導光部材（導光装置）単体を示す分解側面図である。   1 to 4 show a first embodiment in which a light guide device according to the present invention is applied to a display device for a vehicle, for example, FIG. 1 is a sectional view of the display device, and FIG. 2 is a display plate removed. FIG. 3 is an exploded front view of FIG. 2, and FIG. 4 is an exploded side view showing a single light guide member (light guide device).

図１において、本実施形態による表示装置は、表示板１と、ケース２と、光源（発光体）３と、導光部材４とを備えている。   In FIG. 1, the display device according to the present embodiment includes a display plate 1, a case 2, a light source (light emitter) 3, and a light guide member 4.

表示板１は、光源３によって照明可能な所定の表示マーク（図示省略）を形成した印刷パネルからなるもので、光源３一つにつき一つの前記表示マークが形成されている。   The display board 1 is composed of a printing panel on which a predetermined display mark (not shown) that can be illuminated by the light source 3 is formed. One display mark is formed for each light source 3.

ケース２は、例えば乳白色の合成樹脂からなり、前記所定の表示マークと対応する光源３の周囲を取り巻いて、他の前記所定の表示マークと対応する光源３とを区画する複数の照明室２１〜２４が形成されている。なおケース２の一側には、導光部材４を照明室２１〜２４に収容するための開口部２５が形成されている（図３参照）。   The case 2 is made of, for example, milky white synthetic resin, surrounds the light source 3 corresponding to the predetermined display mark, and a plurality of illumination chambers 21 to partition the light source 3 corresponding to the other predetermined display mark. 24 is formed. An opening 25 for accommodating the light guide member 4 in the illumination chambers 21 to 24 is formed on one side of the case 2 (see FIG. 3).

光源３は、例えば回路基板３１上に配置された複数の発光ダイオードからなり、各照明室２１〜２４内に位置して、対応する前記表示マークを照明する。   The light source 3 is composed of, for example, a plurality of light emitting diodes arranged on the circuit board 31 and is located in each of the illumination chambers 21 to 24 to illuminate the corresponding display mark.

導光部材４は、透光性合成樹脂からなり、第１の導光部４１と、第２の導光部４２と、第３の導光部４３と、第４の導光部４４入光面とで構成されている。   The light guide member 4 is made of a translucent synthetic resin, and enters the first light guide portion 41, the second light guide portion 42, the third light guide portion 43, and the fourth light guide portion 44. It consists of a surface.

これら各導光体４１〜４４は、光源３に近づく程先細りとなる柱形を呈し、それぞれが光源３からの光を内部に導入する入光面４５と、この入光面４５を通じて内部に導入した光を出光させる出光面４６と、入光面４５を通じて導入した光を出光面４６に導く導光面４７とを有する。またこれら導光部４１〜４４は、前記先細り形状に伴い、入光面４５側よりも出光面４６側が幅広となるように導光面４７が発光体の発光中心軸に対して傾斜してなることを特徴とする。   Each of these light guides 41 to 44 has a columnar shape that tapers toward the light source 3. Each light guide 41 to 44 introduces light from the light source 3 into the inside, and introduces the light into the inside through the light entrance surface 45. And a light guide surface 47 that guides the light introduced through the light incident surface 45 to the light output surface 46. In addition, with the tapered shape, the light guide surfaces 47 to 44 are inclined with respect to the light emission central axis of the light emitter so that the light exit surface 46 side is wider than the light entrance surface 45 side. It is characterized by that.

また第１，第２の導光体４１，４２は、それ単体で、第１の空間部Ｓ１を隔てて隣接すると共に、第１の連結部４８を通じて相互に連結されている（図３、図４参照）。   The first and second light guides 41 and 42 are adjacent to each other across the first space S1 and are connected to each other through the first connecting part 48 (FIGS. 3 and 4). 4).

第１の空間部Ｓ１は、その内部に第３の導光体４３を収納できる大きさに形成されている。また第１の連結部４８は、第１の導光体４１の導光面４７の中程（中間部）と第２の導光体４２の導光面４７の中程（中間部）とを第１の空間部Ｓ１を迂回するように繋いでいる（図３参照）。さらに第１の連結部４８には、後述する第２の連結部と部分接触する突出部４８１が２個形成されている。   The first space S1 is formed in a size that allows the third light guide 43 to be accommodated therein. The first connecting portion 48 includes a middle portion (intermediate portion) of the light guide surface 47 of the first light guide body 41 and a middle portion (intermediate portion) of the light guide surface 47 of the second light guide body 42. It connects so that 1st space part S1 may be detoured (refer FIG. 3). Further, the first connecting portion 48 is formed with two protruding portions 481 that are in partial contact with a second connecting portion described later.

第３，第４の導光体４３，４４は、それ単体で、第２の空間部Ｓ２を隔てて隣接すると共に、第２の連結部４９を通じて相互に連結されている（図３、図４参照）。   The third and fourth light guide bodies 43 and 44 are singly adjacent to each other across the second space S2 and are connected to each other through the second connecting portion 49 (FIGS. 3 and 4). reference).

このように構成される導光部材４は、まず第３，第４の導光体４３，４４を、開口部２５を通じて各照明室２２，２４内に収納し、次に第１，第２の導光体第４１，４２を、開口部２５を通じて各照明室２１，２３内に収納することにより、ケース２に組み付けられる。この際、第１，第２の導光体４１，４２と第３，第４の導光体４３，４４は、第１の連結部４８と第２の連結部４９とが入光面４５と出光面４６との対向方向に沿って重なるように組み合わされ、第１の連結部４８の突出部４８１が予めケース２に組み付けられている第２の連結部４９の上側（前方側）に接触するように組み付けられる。この結果、第１，第２の導光部４１，４２の第１の空間部Ｓ１内に第３の導光体３が挿入配置されて、第１，第２の導光部４１，４２の各出光面４６間に第３の導光部４３の出光面４６が位置すると共に、第３，第４の導光部４３，４４の第２の空間部Ｓ２内に第２の導光体４２が挿入配置されて、第３，第４の導光部４３，４４の各出光面４６間に第２の導光部４２の各出光面４６が位置し、４つの出光面４６が高さ方向においては同一面、幅方向においては一直線に並ぶように組み合わされる。   The light guide member 4 configured in this manner first stores the third and fourth light guides 43 and 44 in the respective illumination chambers 22 and 24 through the opening 25, and then the first and second light guides. The light guide bodies 41 and 42 are assembled into the case 2 by being housed in the illumination chambers 21 and 23 through the opening 25. At this time, the first and second light guides 41 and 42 and the third and fourth light guides 43 and 44 have the first connecting portion 48 and the second connecting portion 49 connected to the light incident surface 45. The protrusions 481 of the first connecting part 48 are combined so as to overlap with the light exiting surface 46 in the facing direction, and come into contact with the upper side (front side) of the second connecting part 49 that is assembled to the case 2 in advance. Assembled. As a result, the third light guide 3 is inserted and disposed in the first space S1 of the first and second light guides 41 and 42, and the first and second light guides 41 and 42 are arranged. The light exit surface 46 of the third light guide 43 is located between the light exit surfaces 46, and the second light guide 42 is in the second space S <b> 2 of the third and fourth light guides 43 and 44. Is inserted and arranged, and the light exit surfaces 46 of the second light guide portion 42 are positioned between the light exit surfaces 46 of the third and fourth light guide portions 43 and 44, and the four light exit surfaces 46 are in the height direction. Are combined so that they are aligned in the same plane and in the width direction.

以上のように本実施形態では、透光性材料からなり、入光面４５と、この入光面４５を通じて内部に導入した光を出光させる出光面４６と、入光面４５を通じて導入した光を出光面４６に導く導光面４７とを有する導光部４１〜４４を複数個備えてなる導光装置において、導光部４１〜４４が第１の空間部Ｓ１を隔てて隣接すると共に第１の空間部Ｓ１を迂回する第１の連結部４８を通じて連結される第１，第２の導光部４１，４２と、第２の空間部Ｓ２を隔てて隣接すると共に第２の空間部Ｓ２を迂回する第２の連結部４９を通じて連結される第３，第４の導光部４３，４４とでなり、第１，第２の導光部４１，４２の各出光面４６間に第３の導光部４３の出光面４６が位置すると共に第３，第４の導光部４３，４４の各出光面４６間に第２の導光部４２の出光面４６が位置するように第１の空間部Ｓ１に第３の導光部４３を配置すると共に第２の空間部Ｓ２に第２の導光部４２を配置してなることにより、部品点数を少なくしながら光の伝播を抑えることができる。   As described above, in the present embodiment, the light incident surface 45, the light exit surface 46 that emits the light introduced inside through the light incident surface 45, and the light introduced through the light incident surface 45 are made of a translucent material. In the light guide device including a plurality of light guide portions 41 to 44 having a light guide surface 47 that leads to the light exit surface 46, the light guide portions 41 to 44 are adjacent to each other across the first space portion S <b> 1 and the first is provided. The first and second light guide portions 41 and 42 connected through the first connecting portion 48 that bypasses the space portion S1 and the second space portion S2 are adjacent to each other with the second space portion S2 therebetween. The third and fourth light guides 43 and 44 are connected through the second connection part 49 that bypasses the third light guide part 41 and the third light guide part 41 and the third light guide part 42 between the light output surfaces 46 of the third. The light exit surface 46 of the light guide 43 is located, and the light exit surfaces 46 of the third and fourth light guides 43 and 44 are arranged between the light exit surfaces 46. The third light guide 43 is disposed in the first space S1 so that the light exit surface 46 of the light guide 42 is positioned, and the second light guide 42 is disposed in the second space S2. As a result, the propagation of light can be suppressed while reducing the number of components.

すなわち、各導光部４１，４２並びに各導光部４３，４４を各空間部Ｓ１，Ｓ２によって離間させ、かつ各空間部Ｓ１，Ｓ２を迂回する各連結部４８，４９によって各導光部４１，４２並びに各導光部４３，４４を接続することにより、隣接する各導光部４１，４２並びに各導光部４３，４４どうしにおける光の伝播を抑制しながら、部品点数の増加を必要最小限に抑えることができる。   That is, each light guide part 41, 42 and each light guide part 43, 44 are separated by each space part S1, S2, and each light guide part 41 is connected by each connection part 48, 49 detouring each space part S1, S2. , 42 and the light guides 43, 44 are connected, and the increase in the number of components is minimized while suppressing the propagation of light between the adjacent light guides 41, 42 and the light guides 43, 44. To the limit.

なお本実施形態では、第１，第２の導光部４１，４２を連結部４８にて連結し、第３，第４の導光部４３，４４を連結部４９にて連結する例を示したが、例えば第３，第４の導光部４３，４４を単一の第３の導光部とし、第１，第２の導光部４１，４２間に配置してもよい。さらに本実施形態では、２つの導光部を連結部にて接続した導光部セットを２つ用意したが、連結部にて連結する導光部の個数や導光部のセット個数は任意である。   In the present embodiment, an example is shown in which the first and second light guide portions 41 and 42 are connected by the connecting portion 48 and the third and fourth light guide portions 43 and 44 are connected by the connecting portion 49. However, for example, the third and fourth light guides 43 and 44 may be a single third light guide, and may be disposed between the first and second light guides 41 and 42. Furthermore, in the present embodiment, two light guide unit sets in which two light guide units are connected by a connection unit are prepared. However, the number of light guide units and the number of light guide units connected by the connection unit are arbitrary. is there.

また本実施形態では、第１の連結部４８と第２の連結部４９との接触箇所（すなわち第１の連結部４８の第２の連結部４９との対向面）に突出部４８１を設けて両者を部分接触させたことにより、第１，第２の導光部４１，４２の出光面４６の、第３，第４の導光部４３，４４の出光面４６に対する高さ方向における位置合わせを正確に行うことができる。   Further, in the present embodiment, the protruding portion 481 is provided at the contact portion between the first connecting portion 48 and the second connecting portion 49 (that is, the surface of the first connecting portion 48 facing the second connecting portion 49). By causing both to be in partial contact, the light exit surfaces 46 of the first and second light guide portions 41 and 42 are aligned in the height direction with respect to the light exit surfaces 46 of the third and fourth light guide portions 43 and 44. Can be done accurately.

また本実施形態では、光源３を有し、各導光部４１〜４４が入光面４５側よりも出光面４６側が幅広となるように導光面４７が光源３の発光中心軸（図１中、発光中心軸ＬＣ参照）に対して傾斜してなることにより、観察者の視線軸と発光中心軸ＬＣとのなす角度が変化した場合でも所定の範囲において輝度のばらつきを抑えることができる。   Moreover, in this embodiment, it has the light source 3, and the light guide surface 47 has the light emission center axis | shaft (FIG. 1) of the light guide part 41-44 so that the light emission surface 46 side is wider than the light-incidence surface 45 side. In the middle, see the light emission center axis LC), and even when the angle formed by the observer's line-of-sight axis and the light emission center axis LC changes, it is possible to suppress variations in luminance in a predetermined range.

なお本実施形態では、各導光部４１〜４４を表示板１の表示マークを照明する部品として、観察者からは視認されてないように設けたが、それ自体が発光体からの光を受けて発光することで所定の表示を行ったり、装飾性を付与する視認部品として採用してもよい。
また本実施形態では、発光体として発光ダイオードからなる光源３を用いたが、発光体としては発光ダイオードのごとき点状光源に限らず、例えば面状もしくは線状の光源や各種ディスプレイパネルを用いることができる。 In the present embodiment, each light guide portion 41 to 44 is provided as a component that illuminates the display mark of the display panel 1 so that it is not visually recognized by an observer, but it itself receives light from the light emitter. It may be used as a visual component that gives a predetermined display or gives decorativeness by emitting light.
In the present embodiment, the light source 3 made of a light emitting diode is used as the light emitting body. However, the light emitting body is not limited to a point light source such as a light emitting diode, and for example, a planar or linear light source or various display panels is used. Can do.

図５は、本発明の第２の実施形態を示す要部断面図（ハッチングは省略）であり、本実施形態では、導光部４１〜４４において、連結部４８，４９と導光面４７との接続箇所から入光面４５に至る所定箇所Ｃに出光面４６から連結部４８，４９に至る光Ｌａが外部に透過するのを規制する透過規制部４８２，４９２を設けている。   FIG. 5 is a cross-sectional view of an essential part showing a second embodiment of the present invention (hatching is omitted). In this embodiment, in the light guide parts 41 to 44, the connection parts 48 and 49, the light guide surface 47, and Transmission restricting portions 482 and 492 for restricting the transmission of light La from the light exit surface 46 to the connecting portions 48 and 49 to the outside are provided at a predetermined location C from the connection location to the light incident surface 45.

この透過規制部４８２，４９２は、所定箇所Ｃの図５中、左方向への厚みを大きくすると共にその外壁面４８３，４９３を発光中心軸ＬＣに対して傾斜させることにより、出光面４６から連結部４８，４９を通って外側に透過しようとする光Ｌａを反射させるもので、これにより、連結部４８，４９を通じて導光部４１〜４４の外部が透けて見えてしまうことに起因、導光部４１〜４４を視認部品として採用する際の表示品質の低下を防止することができる。なお外壁面４８３，４９３は、光Ｌａを反射できる角度に設定してあればよい。   The transmission restricting portions 482 and 492 are connected from the light exit surface 46 by increasing the thickness in the left direction of the predetermined portion C in FIG. 5 and by inclining the outer wall surfaces 483 and 493 with respect to the light emission center axis LC. The light La which is going to be transmitted to the outside through the parts 48 and 49 is reflected. As a result, the outside of the light guide parts 41 to 44 can be seen through the connecting parts 48 and 49, thereby guiding the light. It is possible to prevent the display quality from being deteriorated when the parts 41 to 44 are employed as the visual parts. The outer wall surfaces 483 and 493 may be set to an angle at which the light La can be reflected.

本発明の第１の実施形態を示す断面図。Sectional drawing which shows the 1st Embodiment of this invention. 同実施形態において表示板を取り除いた状態を示す正面図。The front view which shows the state which removed the display board in the same embodiment. 図２の分解正面図。The exploded front view of FIG. 同実施形態における導光部材（導光装置）単体を示す分解側面図。The disassembled side view which shows the light guide member (light guide device) single-piece | unit in the embodiment. 本発明の第２の実施形態を示す要部断面図。The principal part sectional view showing the 2nd embodiment of the present invention.

符号の説明Explanation of symbols

１ 表示板
２ ケース
３ 光源（発光体）
４ 導光部材
２１〜２４ 照明室
２５ 開口部
３１ 回路基板
４１ 第１の導光部
４２ 第２の導光部
４３ 第３の導光部
４４ 第４の導光部
４５ 入光面
４６ 出光面
４７ 導光面
４８ 第１の連結部
４９ 第２の連結部
４８１ 突出部
４８２，４９２ 透過規制部
４８３，４９３ 外壁面
Ｃ 所定箇所
Ｌａ 光
ＬＣ 発光中心軸
Ｓ１ 第１の空間部
Ｓ２ 第２の空間部 1 Display board 2 Case 3 Light source (light emitter)
DESCRIPTION OF SYMBOLS 4 Light guide member 21-24 Illumination room 25 Opening part 31 Circuit board 41 1st light guide part 42 2nd light guide part 43 3rd light guide part 44 4th light guide part 45 Light incident surface 46 Light exit surface 47 Light guide surface 48 First connection portion 49 Second connection portion 481 Projection portion 482,492 Transmission restriction portion 483,493 Outer wall surface C Predetermined portion La Light LC Light emission central axis S1 First space portion S2 Second space Part

Claims (5)

透光性材料からなり、入光面と、この入光面を通じて内部に導入した光を出光させる出光面と、前記入光面を通じて導入した光を前記出光面に導く導光面とを有する導光部を複数備えてなる導光装置において、
前記導光部が空間部を隔てて隣接すると共に前記空間部を迂回する連結部を通じて連結される第１，第２の導光部と、単一の他の導光部とでなり、
前記第１，第２の導光部の前記各出光面間に前記他の導光部の前記出光面が位置するように前記空間部に前記他の導光体を配置してなることを特徴とする導光装置。 A light guide surface made of a translucent material, having a light entrance surface, a light exit surface that emits light introduced therein through the light entrance surface, and a light guide surface that guides the light introduced through the light entrance surface to the light exit surface. In a light guide device comprising a plurality of light sections,
The light guide part is adjacent to the space part and is connected through a connection part that bypasses the space part, and the first and second light guide parts and a single other light guide part,
The other light guide is arranged in the space so that the light exit surface of the other light guide is located between the light exit surfaces of the first and second light guides. A light guide device. 透光性材料からなり、入光面と、この入光面を通じて内部に導入した光を出光させる出光面と、前記入光面を通じて導入した光を前記出光面に導く導光面とを有する導光部を複数個備えてなる導光装置において、
前記導光部が第１の空間部を隔てて隣接すると共に前記第１の空間部を迂回する第１の連結部を通じて連結される第１，第２の導光部と、第２の空間部を隔てて隣接すると共に前記第２の空間部を迂回する第２の連結部を通じて連結される第３，第４の導光部とでなり、
前記第１，第２の導光部の前記各出光面間に前記第３の導光部または前記第４の導光部のいずれか一方の前記出光面が位置すると共に前記第３，第４の導光部の前記各出光面間に前記第１の導光部または前記第２の導光部のいずれか一方の前記出光面が位置するように前記第１の空間部に前記第３の導光部または前記第４の導光部のいずれか一方を配置すると共に前記第２の空間部に前記第１の導光部または前記第２の導光部のいずれか一方を配置してなることを特徴とする導光装置。 A light guide surface made of a translucent material, having a light entrance surface, a light exit surface that emits light introduced therein through the light entrance surface, and a light guide surface that guides the light introduced through the light entrance surface to the light exit surface. In a light guide device comprising a plurality of light sections,
First and second light guide portions, which are adjacent to each other with a first space portion therebetween and are connected through a first connection portion that bypasses the first space portion, and a second space portion And third and fourth light guide parts that are connected through a second connection part that is adjacent to each other and bypasses the second space part,
The light output surface of either the third light guide portion or the fourth light guide portion is located between the light output surfaces of the first and second light guide portions, and the third and fourth light guide surfaces are located. In the first space portion, the third light exit surface is positioned such that either the first light guide portion or the second light guide portion is positioned between the light exit surfaces of the light guide portion. One of the light guide part and the fourth light guide part is arranged, and one of the first light guide part and the second light guide part is arranged in the second space part. A light guide device. 前記第１の連結部と前記第２の連結部とが前記入光面と前記出光面との対向方向に沿って重なるように組み合わされており、前記第１の連結部と前記第２の連結部との接触箇所に突出部が設けられていることを特徴とする請求項２記載の導光装置。 The first connecting portion and the second connecting portion are combined so as to overlap along the facing direction of the light incident surface and the light emitting surface, and the first connecting portion and the second connecting portion are combined. The light guide device according to claim 2, wherein a projecting portion is provided at a contact point with the portion. 前記導光部において、前記連結部が前記導光面の中程で前記導光部と接続されており、この前記連結部との接続箇所から前記入光面に至る前記導光面の所定箇所に前記出光面から前記連結部に至る光の透過を規制する透過規制部を設けてなることを特徴とする請求項１または請求項２記載の導光装置。 In the light guide portion, the connecting portion is connected to the light guide portion in the middle of the light guide surface, and a predetermined location on the light guide surface from the connection location with the connecting portion to the light incident surface. The light guide device according to claim 1, further comprising a transmission restricting portion that restricts transmission of light from the light exit surface to the connecting portion. 発光体を有し、前記導光部は、前記入光面側よりも前記出光面側が幅広となるように前記導光面が前記発光体の発光中心軸に対して傾斜してなることを特徴とする請求項１または請求項２記載の導光装置。 The light guide has a light emitter, and the light guide surface is inclined with respect to the light emission center axis of the light emitter so that the light exit surface side is wider than the light entrance surface side. The light guide device according to claim 1 or 2.
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WO2022224607A1 (en) * 2021-04-22 2022-10-27 アルプスアルパイン株式会社 Display device

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JP2002192555A (en) * 2000-12-27 2002-07-10 Yamaha Corp Light transmitting display medium made of resin, and manufacturing method therefor
JP2003345274A (en) * 2002-05-30 2003-12-03 Hitachi Ltd State display mechanism and disk array device using the same
JP2007127909A (en) * 2005-11-07 2007-05-24 Meidensha Corp Led indicator, surface panel of led indicator, and light shielding plate

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JPS62152490U (en) * 1986-03-20 1987-09-28
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JP2002192555A (en) * 2000-12-27 2002-07-10 Yamaha Corp Light transmitting display medium made of resin, and manufacturing method therefor
JP2003345274A (en) * 2002-05-30 2003-12-03 Hitachi Ltd State display mechanism and disk array device using the same
JP2007127909A (en) * 2005-11-07 2007-05-24 Meidensha Corp Led indicator, surface panel of led indicator, and light shielding plate

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Publication number Priority date Publication date Assignee Title
WO2022224607A1 (en) * 2021-04-22 2022-10-27 アルプスアルパイン株式会社 Display device
JP7462835B2 (en) 2021-04-22 2024-04-05 アルプスアルパイン株式会社 Display device

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