JP2012089442A - Light guide member and light-emitting device having the same - Google Patents

Light guide member and light-emitting device having the same Download PDF

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Publication number
JP2012089442A
JP2012089442A JP2010237549A JP2010237549A JP2012089442A JP 2012089442 A JP2012089442 A JP 2012089442A JP 2010237549 A JP2010237549 A JP 2010237549A JP 2010237549 A JP2010237549 A JP 2010237549A JP 2012089442 A JP2012089442 A JP 2012089442A
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Japan
Prior art keywords
light guide
light
surface portion
guide member
guide plate
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JP2010237549A
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JP5603199B2 (en
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Tatsuji Ono
達司 大野
Hideki Koizumi
秀樹 小泉
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Panasonic Corp
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Panasonic Corp
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Priority to JP2010237549A priority Critical patent/JP5603199B2/en
Priority to PCT/JP2011/066449 priority patent/WO2012053263A1/en
Priority to CN201180050354.1A priority patent/CN103168195B/en
Publication of JP2012089442A publication Critical patent/JP2012089442A/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • G02B6/0021—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces for housing at least a part of the light source, e.g. by forming holes or recesses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0091—Positioning aspects of the light source relative to the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0005—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type
    • G02B6/001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type the light being emitted along at least a portion of the lateral surface of the fibre

Abstract

PROBLEM TO BE SOLVED: To provide a light guide member capable of reducing diffused light, and a light-emitting device having the light guide member.SOLUTION: The light guide member 1 includes a light guide plate 10 having one end face section 11 arranged at a light source 26 side, a reflecting surface section 12 arranged so as to cross one end face section, and an emitting surface section 13 arranged so as to cross one end face section, and a lens section 15 formed so as to project from one end face section to the light source side and having a recessed section 16 for receiving the light source and condensing light from the light source.

Description

本発明は、光源からの光を導光し、出射する導光部材及びこれを備えた発光装置に関する。   The present invention relates to a light guide member that guides and emits light from a light source, and a light emitting device including the same.

従来より、光源から出射された光を一端面に入射させ、導光するとともに、導光パターンが形成された反射面によって反射させ、この反射面の反対側に形成された出射面から出射させる導光板を備えた照明装置が知られている。
例えば、下記特許文献１では、側端面から内部に導入された光源の光を前面から照射する導光材を備えたエッジライト式照明装置が提案されている。 Conventionally, light emitted from a light source is incident on one end surface, guided, reflected by a reflection surface on which a light guide pattern is formed, and emitted from an emission surface formed on the opposite side of the reflection surface. An illumination device including a light plate is known.
For example, Patent Document 1 below proposes an edge light type illumination device that includes a light guide material that irradiates light from a light source introduced from the side end face into the inside.

特開２００９−２０５８８１号公報JP 2009-205881 A

しかしながら、上記のような従来の照明装置では、一端面に配置される光源からの光の一部が導光方向に沿わずに拡散してしまうという問題があった。また、その拡散した光が導光板に入射するため、出射面から出射される光も拡散光が多くなる傾向があるという問題があった。   However, the conventional illumination device as described above has a problem that a part of the light from the light source disposed on one end face diffuses without being along the light guide direction. Further, since the diffused light is incident on the light guide plate, there is a problem that the light emitted from the emission surface tends to increase the diffused light.

本発明は、上記実情に鑑みてなされたものであり、拡散光を低減し得る導光部材及びこれを備えた発光装置を提供することを目的としている。   This invention is made | formed in view of the said situation, and it aims at providing the light guide member which can reduce a diffused light, and a light-emitting device provided with the same.

上記目的を達成するために、本発明に係る導光部材は、光源側に配置される一端面部、該一端面部に交差するように設けられた反射面部及びこの反射面部の反対側で前記一端面部に交差するように設けられた出射面部を有した導光板部と、前記一端面部から前記光源側に向けて突出するように形成され、かつ、前記光源を受け入れる凹部を有するとともに前記光源からの光を集光するレンズ部と、を備えていることを特徴とする。   In order to achieve the above object, a light guide member according to the present invention includes an end surface portion disposed on the light source side, a reflecting surface portion provided so as to intersect the one end surface portion, and the one end surface portion on the opposite side of the reflecting surface portion. And a light guide plate portion having an emission surface portion provided so as to intersect the light source, a light receiving plate portion formed so as to protrude from the one end surface portion toward the light source side, and having a recess for receiving the light source, and light from the light source And a lens portion for condensing the light.

本発明においては、前記導光板部の前記一端面部にそれぞれが交差するように形成された両側面部に連なるように形成された前記レンズ部の両側部を、前記凹部の周縁部に向けて先細り状の凸湾曲面形状としてもよい。
また、本発明においては、前記レンズ部を、前記両側部の前記凸湾曲面形状とされた部位の基端側の両側縁から、前記導光板部の両側面部に向けて先細り状に傾斜する傾斜面部をさらに備えたものとしてもよい。
また、本発明においては、前記導光板部の前記一端面部にそれぞれが交差するように形成された両側面部を、前記反射面部から前記出射面部に向けて拡開するように傾斜状に形成してもよい。 In the present invention, both side portions of the lens portion formed so as to be continuous with both side surface portions formed so as to intersect the one end surface portion of the light guide plate portion are tapered toward the peripheral edge portion of the concave portion. The convex curved surface shape may be used.
Further, in the present invention, the lens portion is inclined so as to taper from both side edges on the base end side of the convex curved surface-shaped portions of the both side portions toward both side surface portions of the light guide plate portion. A surface portion may be further provided.
Further, in the present invention, both side surface portions formed so as to intersect the one end surface portion of the light guide plate portion are formed in an inclined shape so as to expand from the reflection surface portion toward the emission surface portion. Also good.

また、上記目的を達成するために、本発明に係る発光装置は、本発明に係る導光部材と、この導光部材の前記レンズ部の凹部に収容されるように配置される光源とを備えていることを特徴とする。   In order to achieve the above object, a light emitting device according to the present invention includes a light guide member according to the present invention and a light source disposed so as to be accommodated in the concave portion of the lens portion of the light guide member. It is characterized by.

本発明に係る導光部材及びこれを備えた発光装置は、上述のような構成としたことで、拡散光を低減させることができる。   The light guide member and the light emitting device including the light guide member according to the present invention can reduce diffused light by adopting the above-described configuration.

（ａ）、（ｂ）は、いずれも本発明の一実施形態に係る導光部材を備えた発光装置の一例を模式的に示し、（ａ）は、図２におけるＸ部に対応させた一部破断概略拡大横断面図、（ｂ）は、図２におけるＸ部に対応させた一部破断概略拡大縦断面図である。(A), (b) shows typically an example of the light-emitting device provided with the light guide member which concerns on one Embodiment of this invention, (a) is one corresponding to the X section in FIG. FIG. 3B is a partially broken schematic enlarged longitudinal sectional view corresponding to a portion X in FIG. 2. 同発光装置の一部省略概略斜視図である。It is a partially-omission schematic perspective view of the light-emitting device. （ａ）は、図２におけるＸ部に対応させた一部破断概略拡大分解斜視図、（ｂ）は、（ａ）に対応させた他方向から見た一部破断概略拡大分解斜視図、（ｃ）は、図２におけるＸ部に対応させた一部破断概略拡大斜視図、（ｄ）は、（ｃ）に対応させた他方向から見た一部破断概略拡大斜視図である。(A) is a partially broken schematic enlarged exploded perspective view corresponding to part X in FIG. 2, (b) is a partially broken schematic enlarged exploded perspective view seen from the other direction corresponding to (a), ( FIG. 3C is a partially broken schematic enlarged perspective view corresponding to a portion X in FIG. 2, and FIG. 4D is a partially broken schematic enlarged perspective view seen from the other direction corresponding to FIG. （ａ）は、同発光装置が備える導光部材の一変形例を模式的に示し、図１（ａ）に対応させた図、（ｂ）は、同導光部材の他の変形例を模式的に示し、図２におけるＹ−Ｙ線矢視に対応させた概略拡大縦断面図である。(A) shows typically the modification of the light guide member with which the light-emitting device is provided, The figure corresponding to FIG. 1 (a), (b) is the other modification of the light guide member typically. FIG. 3 is a schematic enlarged longitudinal sectional view corresponding to the view taken along the line YY in FIG.

以下に本発明の実施の形態について、図面に基づいて説明する。
なお、一部の図では、他図に付している詳細な符号の一部を省略している。
また、以下の実施形態では、図１（ｂ）に示す状態を基準として上下及び左右方向を説明する。 Embodiments of the present invention will be described below with reference to the drawings.
In some of the drawings, some of the detailed reference numerals attached to other drawings are omitted.
In the following embodiments, the vertical and horizontal directions will be described with reference to the state shown in FIG.

図１〜図４は、本実施形態に係る導光部材及びこれを備えた発光装置の一例について説明するための概念的な説明図である。
本実施形態に係る発光装置３は、図１及び図２に示すように、光源としてのＬＥＤ（発光ダイオード）２６を有した光源ユニット２と、この光源ユニット２から出射された光を導光するとともに出射（照射）する導光部材１とを備えている。 1 to 4 are conceptual explanatory diagrams for explaining an example of a light guide member according to the present embodiment and a light emitting device including the light guide member.
As shown in FIGS. 1 and 2, the light-emitting device 3 according to the present embodiment guides light emitted from the light source unit 2 having an LED (light-emitting diode) 26 as a light source and the light source unit 2. And a light guide member 1 that emits (irradiates).

導光部材１は、図２に示すように、左右方向に長尺に形成された導光板部１０と、この導光板部１０の長手方向一端面部１１からＬＥＤ２６側に向けて突出するように形成されたレンズ部１５とを備えている。この導光部材１は、アクリル樹脂やポリカーボネート樹脂等の透光性乃至は透明の樹脂系材料や透明ガラス等の屈折率の高い材料から一体的に形成されている。また、この導光部材１は、幅方向（上下及び左右のいずれにも直交する方向）中心を対称軸として幅方向に対称に形成されている。   As shown in FIG. 2, the light guide member 1 is formed so as to protrude from the longitudinal end surface 11 of the light guide plate portion 10 toward the LED 26 side. The lens part 15 is provided. The light guide member 1 is integrally formed from a light-transmitting or transparent resin material such as acrylic resin or polycarbonate resin, or a material having a high refractive index such as transparent glass. The light guide member 1 is formed symmetrically in the width direction with the center in the width direction (a direction perpendicular to both the top and bottom and the left and right) as the axis of symmetry.

導光板部１０は、ＬＥＤ２６（光源ユニット２）側に配置される一端面部１１と、この一端面部１１に交差するようにそれぞれ設けられた反射面部１２、出射面部１３及び両側面部１４，１４とを備えており、縦断面形状が略矩形状で細長の板状体とされている。
図例では、反射面部１２を当該導光板部１０の上面側に設け、出射面部１３を反射面部１２の反対側、つまり当該導光板部１０の下面側に設けた例を示している。
この導光板部１０は、ＬＥＤ２６から出射され、一端面部１１側から入射された光を長手方向に沿って導光しながら、反射面部１２によって反射させ、その反射させた光を出射面部１３から出射する、いわゆるエッジライト方式の構造とされている。図例では、一端面部１１側から入射された光が下面側の出射面部１３から長手方向に略均一に出射されるように、一端面部１１側から他端側に向かうに従い下方側に傾斜するように反射面部１２を形成している。 The light guide plate portion 10 includes an end surface portion 11 disposed on the LED 26 (light source unit 2) side, and a reflection surface portion 12, an emission surface portion 13, and both side surface portions 14 and 14 provided so as to intersect the one end surface portion 11. The longitudinal cross-sectional shape is a substantially rectangular shape, and it is set as the elongate plate-shaped body.
In the example shown in the figure, the reflection surface portion 12 is provided on the upper surface side of the light guide plate portion 10, and the emission surface portion 13 is provided on the opposite side of the reflection surface portion 12, that is, on the lower surface side of the light guide plate portion 10.
The light guide plate part 10 is reflected by the reflection surface part 12 while guiding the light emitted from the LED 26 and incident from the one end surface part 11 side along the longitudinal direction, and the reflected light is emitted from the emission surface part 13. The so-called edge light structure is used. In the illustrated example, the light incident from the one end surface portion 11 side is inclined downward as it goes from the one end surface portion 11 side toward the other end side so as to be emitted substantially uniformly in the longitudinal direction from the lower surface side emission surface portion 13. The reflective surface portion 12 is formed on the surface.

なお、反射面部１２に、長手方向に沿って間隔を空けて幅方向（当該導光板部１０の厚さ方向（両側面部１４，１４方向））に沿う複数のプリズム状の導光溝（導光パターン）を設けるようにしてもよい。この場合、一端面部１１側から入射された光が上面側の反射面部１２によって反射し、下面側の出射面部１３から長手方向に沿って略均一に出射されるように、他端側に向かうに従い導光溝を設ける間隔（ピッチ）を小さくするようにしてもよい。
また、この導光板部１０の両側面部１４，１４の下端部には、当該導光板部１０の幅方向外側に向けて突出するように形成されるとともに、当該導光板部１０の長手方向の略全長に亘ってリブ状の係合部１４ａ，１４ａが設けられている（図３も参照）。これら係合部１４ａ，１４ａを、発光装置３の図示しないケーシングの両内側壁に設けられた凹溝等に係合させることで、当該導光部材１をケーシングに組み付けるようにしてもよい。 A plurality of prismatic light guide grooves (light guides) along the width direction (thickness direction of the light guide plate portion 10 (both side surface portions 14 and 14 directions)) with an interval along the longitudinal direction in the reflective surface portion 12. Pattern) may be provided. In this case, the light incident from the one end surface portion 11 side is reflected by the upper surface side reflecting surface portion 12 and is emitted from the lower surface side emitting surface portion 13 substantially uniformly along the longitudinal direction as it goes toward the other end side. You may make it make the space | interval (pitch) which provides a light guide groove small.
The light guide plate portion 10 is formed at the lower end portions of the side surface portions 14 and 14 so as to protrude outward in the width direction of the light guide plate portion 10, and substantially in the longitudinal direction of the light guide plate portion 10. Rib-like engagement portions 14a and 14a are provided over the entire length (see also FIG. 3). The light guide member 1 may be assembled to the casing by engaging the engaging portions 14 a and 14 a with concave grooves or the like provided on both inner side walls of the casing (not shown) of the light emitting device 3.

レンズ部１５は、上記構造とされた導光板部１０の一端面部１１に一体的に形成されており、ＬＥＤ２６を受け入れる凹部１６を有し、ＬＥＤ２６から出射された光を集光する。
このレンズ部１５は、本実施形態では、光源ユニット２の後記する基板（プリント基板）２５に上下方向に複数（図例では４つ）設けられたＬＥＤ２６の配設態様に対応させて、縦断面形状が上下に長い略長円形状（略角丸長方形状）とされている（図３（ａ）、（ｂ）も参照）。図例では、このレンズ部１５の基端部は、上端が反射面部１２と略連続面となるように、また、下端が一端面部１１の上下方向途中部位に位置するように一端面部１１に付設されるようにして一体的に設けられている（図１（ｂ）及び図３（ｂ）参照）。
凹部１６は、当該レンズ部１５の突出方向先端部に設けられ、光源ユニット２側に向けて開口している。この凹部１６の形状も基板２５に配設された複数のＬＥＤ２６の受け入れが可能なように、開口方向に沿って見た状態で、上下に長い略長円形状（略角丸長方形状）とされている。 The lens portion 15 is formed integrally with the one end surface portion 11 of the light guide plate portion 10 having the above-described structure, and has a concave portion 16 that receives the LED 26, and condenses light emitted from the LED 26.
In this embodiment, the lens unit 15 has a longitudinal section corresponding to the arrangement of LEDs 26 provided in a plurality (four in the illustrated example) in the vertical direction on a substrate (printed circuit board) 25 to be described later of the light source unit 2. The shape is a substantially oval shape (substantially rounded rectangular shape) that is long in the vertical direction (see also FIGS. 3A and 3B). In the illustrated example, the base end portion of the lens portion 15 is attached to the one end surface portion 11 so that the upper end is substantially continuous with the reflecting surface portion 12 and the lower end is located in the middle of the one end surface portion 11 in the vertical direction. In this way, they are integrally provided (see FIGS. 1B and 3B).
The concave portion 16 is provided at the front end portion in the protruding direction of the lens portion 15 and opens toward the light source unit 2 side. The shape of the concave portion 16 is also made into a substantially oval shape (substantially rounded rectangular shape) that is vertically long when viewed along the opening direction so that the plurality of LEDs 26 arranged on the substrate 25 can be received. ing.

また、本実施形態では、図１に示すように、レンズ部１５の突出方向先端側の外周側部が、突出方向基端側から凹部１６の開口周縁部に向けて先細り状に形成されるとともに凸湾曲面形状とされた凸湾曲面部１７とされている。換言すれば、この凸湾曲面部１７は、凹部１６の開口周縁部から当該レンズ部１５の基端側に向けて拡開状に形成されるとともに凸湾曲面形状とされている。
この凸湾曲面部１７は、本実施形態では、凹部１６廻りの全周に亘って設けられている。図例では、この凸湾曲面部１７は、当該凸湾曲面部１７の基端側（反開口周縁部側）の周縁が凹部１６の底面（一端面部１１側の面）よりも一端面部１１側に位置するように形成されている。これにより、凹部１６に収容されたＬＥＤ２６から出射された光を当該凸湾曲面部１７においてより効果的に反射させ、集光させることができる。なお、この凸湾曲面部１７の曲率半径等は、ＬＥＤ２６から出射され、凹部１６の内周側面から入射した光を効率的に導光方向（当該導光部材１の長手方向）に向けて反射可能なように当該導光部材１の屈折率等に応じて設定するようにしてもよい。 Further, in the present embodiment, as shown in FIG. 1, the outer peripheral side portion on the distal end side in the protruding direction of the lens portion 15 is formed in a tapered shape from the proximal end side in the protruding direction toward the opening peripheral edge portion of the concave portion 16. The convex curved surface portion 17 has a convex curved surface shape. In other words, the convex curved surface portion 17 is formed in an expanded shape from the peripheral edge of the opening of the concave portion 16 toward the proximal end side of the lens portion 15 and has a convex curved surface shape.
In this embodiment, the convex curved surface portion 17 is provided over the entire circumference around the concave portion 16. In the illustrated example, the convex curved surface portion 17 has a peripheral edge of the convex curved surface portion 17 on the one end surface portion 11 side of the bottom surface of the concave portion 16 (surface on the one end surface portion 11 side). It is formed to do. Thereby, the light radiate | emitted from LED26 accommodated in the recessed part 16 can be more effectively reflected in the said convex curved surface part 17, and can be condensed. The radius of curvature of the convex curved surface portion 17 can efficiently reflect light emitted from the LED 26 and incident from the inner peripheral side surface of the concave portion 16 toward the light guide direction (longitudinal direction of the light guide member 1). As such, it may be set according to the refractive index of the light guide member 1 or the like.

また、本実施形態では、レンズ部１５は、この凸湾曲面部１７の基端側の上記周縁から、導光板部１０の一端面部１１に向けて先細り状（テーパ状）に傾斜する傾斜面部１８を有している。換言すれば、この傾斜面部１８は、導光板部１０の一端面部１１から凸湾曲面部１７の周縁に向けて拡開状（テーパ状）に傾斜する形状とされている。
この傾斜面部１８は、上記のように凹部１６廻りの全周に亘って設けられた凸湾曲面部１７と同様、当該レンズ部１５の外周側面の全周に亘って形成されている。
この傾斜面部１８の幅方向両側部と、導光板部１０の両側面部１４，１４とは、本実施形態では、図１（ａ）に示すように、連続面となるように形成されている。つまり、この傾斜面部１８の幅方向両側部は、凸湾曲面部１７の基端側の両側縁から導光板部１０の両側面部１４，１４に向けて先細り状に傾斜するように設けられている。この傾斜面部１８の傾斜角度は、ＬＥＤ２６から出射された光を導光板部１０に向けて効率的に導光可能なように設定するようにしてもよい。 Further, in the present embodiment, the lens portion 15 has an inclined surface portion 18 that is tapered (tapered) toward the one end surface portion 11 of the light guide plate portion 10 from the peripheral edge on the proximal end side of the convex curved surface portion 17. Have. In other words, the inclined surface portion 18 has a shape that inclines in an expanding shape (tapered shape) from the one end surface portion 11 of the light guide plate portion 10 toward the peripheral edge of the convex curved surface portion 17.
The inclined surface portion 18 is formed over the entire circumference of the outer peripheral side surface of the lens portion 15 in the same manner as the convex curved surface portion 17 provided over the entire circumference around the concave portion 16 as described above.
In the present embodiment, both side portions in the width direction of the inclined surface portion 18 and both side surface portions 14 and 14 of the light guide plate portion 10 are formed to be continuous surfaces as shown in FIG. That is, both side portions in the width direction of the inclined surface portion 18 are provided so as to be inclined in a tapered manner from both side edges on the proximal end side of the convex curved surface portion 17 toward both side surface portions 14 and 14 of the light guide plate portion 10. The inclination angle of the inclined surface portion 18 may be set so that light emitted from the LED 26 can be efficiently guided toward the light guide plate portion 10.

また、本実施形態では、このレンズ部１５に、光源ユニット２の後記する基板ケース２０に係合する一対の係止突起１９，１９を設けている。これら一対の係止突起１９，１９は、図例では、当該レンズ部１５の凸湾曲面部１７の両側部に付設されるように設けられており、光源ユニット２側に向けて突出するように形成されている。
これら一対の係止突起１９，１９の突出方向先端には、図１及び図３（ａ）、（ｂ）、（ｄ）に示すように、基板ケース２０に設けられた貫通孔２２ａ，２２ａの孔縁に係止する係止爪１９ａ，１９ａがそれぞれに設けられている。
また、これら一対の係止突起１９，１９の突出方向基端部には、図１（ａ）及び図３（ｂ）に示すように、突部１９ｂ，１９ｂがそれぞれに設けられている。これら突部１９ｂ，１９ｂは、当該導光部材１と光源ユニット２とが組み付けられた状態で、当該導光部材１と後記する基板２５に形成されたパターン（回路）２８との接触を防止するように形成されている。 In the present embodiment, the lens portion 15 is provided with a pair of locking protrusions 19 that engage with a substrate case 20 described later of the light source unit 2. In the illustrated example, the pair of locking protrusions 19 and 19 are provided so as to be attached to both side portions of the convex curved surface portion 17 of the lens portion 15 and are formed so as to protrude toward the light source unit 2 side. Has been.
As shown in FIGS. 1 and 3 (a), 3 (b), and (d), through holes 22a and 22a provided in the substrate case 20 are provided at the projecting ends of the pair of locking projections 19 and 19, respectively. Locking claws 19a and 19a that are locked to the hole edges are respectively provided.
Further, as shown in FIGS. 1 (a) and 3 (b), protrusions 19b and 19b are respectively provided on the proximal ends of the pair of locking protrusions 19 and 19 in the protruding direction. These protrusions 19b and 19b prevent contact between the light guide member 1 and a pattern (circuit) 28 formed on a substrate 25 described later in a state where the light guide member 1 and the light source unit 2 are assembled. It is formed as follows.

光源ユニット２は、導光部材１の一端面部１１側に向けて開口し、導光部材１のレンズ部１５を受け入れる凹所２１を有した基板ケース２０と、この基板ケース２０の凹所２１内に配設される基板２５とを備えている。
基板ケース２０は、図１及び図３に示すように、凹所２１の底面を構成する底部２２と、幅方向に対向するように形成された側壁部２３，２３と、これら側壁部２３，２３の下端を接続するように形成された下側部２４とを有している。これらによって、凹所２１を区画している。
この基板ケース２０の底部２２には、導光部材１に設けられた一対の係止突起１９，１９が挿入されて係合する貫通孔２２ａ，２２ａが設けられている。
なお、基板ケース２０は、基板２５に実装される各種電子部品等からの伝熱性を向上させ、放熱性を向上させる観点等からアルミニウム等の金属系材料から形成されたものとしてもよい。 The light source unit 2 opens toward the one end face 11 side of the light guide member 1 and has a substrate case 20 having a recess 21 for receiving the lens portion 15 of the light guide member 1, and the inside of the recess 21 of the substrate case 20. And a substrate 25 disposed on the substrate.
As shown in FIGS. 1 and 3, the substrate case 20 includes a bottom portion 22 constituting the bottom surface of the recess 21, side wall portions 23 and 23 formed so as to face each other in the width direction, and the side wall portions 23 and 23. And a lower side portion 24 formed so as to connect the lower ends thereof. By these, the recess 21 is defined.
The bottom portion 22 of the substrate case 20 is provided with through holes 22a and 22a into which a pair of locking projections 19 and 19 provided on the light guide member 1 are inserted and engaged.
The substrate case 20 may be formed of a metal material such as aluminum from the viewpoint of improving heat transfer from various electronic components mounted on the substrate 25 and improving heat dissipation.

基板２５は、基板ケース２０の凹所２１に対応させて略矩形状の薄平板状とされており、この基板２５の表面側（導光部材１側）には、光源となる発光素子としての複数のＬＥＤ２６やコネクター２７などの電子部品が実装されている。なお、ＬＥＤ２６としては、図例のような発光素子（ＬＥＤ素子）を樹脂等で封止した砲弾型のものに限られず、チップ形状等、他の形状とされたものとしてもよく、表面実装型のものを採用するようにしてもよい。また、複数のＬＥＤ２６のそれぞれを、異なる色の光を出射するものとしてもよい。また、基板２５は、基板ケース２０と同様、放熱性を向上させる観点等からアルミニウム等の金属系材料から形成されたものとしてもよく、絶縁層等を積層した多層構造としてもよい。   The substrate 25 is formed in a substantially rectangular thin flat plate shape corresponding to the recess 21 of the substrate case 20, and a light emitting element serving as a light source is provided on the surface side (light guide member 1 side) of the substrate 25. Electronic components such as a plurality of LEDs 26 and connectors 27 are mounted. The LED 26 is not limited to a cannonball type in which a light emitting element (LED element) as shown in the figure is sealed with a resin or the like, and may be other shapes such as a chip shape. You may make it employ | adopt a thing. Further, each of the plurality of LEDs 26 may emit light of different colors. Similarly to the substrate case 20, the substrate 25 may be formed of a metal-based material such as aluminum from the viewpoint of improving heat dissipation, or may have a multilayer structure in which insulating layers and the like are stacked.

また、本実施形態では、基板２５の裏面側（底部２２側）に、伝熱（放熱）シート２９を貼着している。この伝熱シート２９としては、熱伝導性の良いシリコーンゲル等のゲルシートやシリコーンシート、その他の樹脂シートを採用するようにしてもよい。本実施形態では、少なくとも厚さ方向（図例の左右方向）に圧縮変形（弾性変形）し得る樹脂シートを採用している。このような伝熱シート２９を基板２５の裏面側に貼着することで、当該伝熱シート２９が基板２５の裏面と基板ケース２０の底部２２との間のスペーサーとして機能し、基板２５と基板ケース２０とを当該伝熱シート２９を介して熱伝導的に密着させることができる。従って、基板２５に実装された電子部品等の熱を効率的に基板ケース２０側に伝熱させ、放熱させることができる。   In this embodiment, a heat transfer (heat dissipation) sheet 29 is attached to the back side (bottom 22 side) of the substrate 25. As the heat transfer sheet 29, a gel sheet such as a silicone gel having good thermal conductivity, a silicone sheet, or other resin sheets may be employed. In the present embodiment, a resin sheet that can be compressively deformed (elastically deformed) at least in the thickness direction (the left-right direction in the figure) is employed. By sticking such a heat transfer sheet 29 to the back surface side of the substrate 25, the heat transfer sheet 29 functions as a spacer between the back surface of the substrate 25 and the bottom portion 22 of the substrate case 20. The case 20 can be brought into close thermal contact with the case 20 via the heat transfer sheet 29. Therefore, the heat of the electronic components and the like mounted on the substrate 25 can be efficiently transferred to the substrate case 20 side and radiated.

なお、この基板２５の基板ケース２０への組み付けは、ねじ等の固定止具を用いて固定するようにしてもよい。または、基板ケース２０の両側壁部２３，２３に基板２５の幅方向端部を受け入れるリブや凹溝等を設けておき、基板ケース２０の凹所２１の上方側の開口から、スライド挿入させて組み付けるようにしてもよい。その他、種々の取付構造の採用が可能である。   The assembly of the substrate 25 to the substrate case 20 may be fixed using a fixing stopper such as a screw. Alternatively, ribs, grooves or the like for receiving the width direction end portions of the substrate 25 are provided on both side wall portions 23, 23 of the substrate case 20, and are slid and inserted through openings above the recesses 21 of the substrate case 20. It may be assembled. In addition, various mounting structures can be employed.

上記構造とされた導光部材１と、光源ユニット２とは、図３に示すように、以下のようにして組み付けるようにしてもよい。
図３（ａ）、（ｂ）に示すように、導光部材１の一端部に設けられたレンズ部１５を基板ケース２０の凹所２１に対向配置させる。そして、この導光部材１のレンズ部１５の一対の係止突起１９，１９を、基板ケース２０の一対の貫通孔２２ａ，２２ａに挿入する。
これら一対の係止突起１９，１９の弾性変形を伴いながら一対の貫通孔２２ａ，２２ａに挿入し、これらの先端の係止爪１９ａ，１９ａを各貫通孔２２ａ，２２ａの孔縁に係止させる。これにより、当該導光部材１と光源ユニット２とを組み付けることができる（図３（ｃ）、（ｄ）参照）。
この状態では、図１に示すように、導光部材１のレンズ部１５の凹部１６に、光源ユニット２の複数のＬＥＤ２６が収容されるように配置される。また、これら複数のＬＥＤ２６は、凹部１６の幅方向中心線に沿って上下に配置される（図１参照）。 The light guide member 1 having the above structure and the light source unit 2 may be assembled as follows as shown in FIG.
As shown in FIGS. 3A and 3B, the lens portion 15 provided at one end portion of the light guide member 1 is disposed to face the recess 21 of the substrate case 20. Then, the pair of locking protrusions 19 and 19 of the lens portion 15 of the light guide member 1 are inserted into the pair of through holes 22 a and 22 a of the substrate case 20.
The pair of locking projections 19 and 19 are inserted into the pair of through holes 22a and 22a while being elastically deformed, and the locking claws 19a and 19a at the tips are locked to the hole edges of the through holes 22a and 22a. . Thereby, the said light guide member 1 and the light source unit 2 can be assembled | attached (refer FIG.3 (c), (d)).
In this state, as shown in FIG. 1, it arrange | positions so that several LED26 of the light source unit 2 may be accommodated in the recessed part 16 of the lens part 15 of the light guide member 1. FIG. Moreover, these several LED26 is arrange | positioned up and down along the width direction centerline of the recessed part 16 (refer FIG. 1).

また、上記のように組み付けた状態では、これら一対の係止突起１９，１９の各基端部に形成された突部１９ｂ，１９ｂが基板２５の幅方向の各縁部に当接し、レンズ部１５と基板２５に設けられたパターン２８との接触を防止することができる（図１（ａ）参照）。
このように、光源ユニット２に係合する一対の係止突起１９，１９を導光部材１に設けることで、これら一対の係止突起１９，１９が、導光部材１のレンズ部１５と、光源ユニット２のＬＥＤ２６との位置決め部材として機能する。この結果、導光部材１のレンズ部１５の位置決めのために他の部材や止具等を用いる必要がなく、効率的に小型化を図ることができ、また、組み付け時における作業性を向上させることができる。
なお、基板ケース２０の両側壁部２３，２３の内側面に、上記のように挿入される一対の係止突起１９，１９をガイドするガイドリブ等を設けるようにしてもよい。 Further, in the assembled state as described above, the protrusions 19b and 19b formed at the base end portions of the pair of locking projections 19 and 19 come into contact with the respective edge portions in the width direction of the substrate 25, and the lens portion. 15 and the pattern 28 provided on the substrate 25 can be prevented (see FIG. 1A).
Thus, by providing the light guide member 1 with a pair of locking projections 19, 19 that engage with the light source unit 2, the pair of locking projections 19, 19 are connected to the lens portion 15 of the light guide member 1, It functions as a positioning member for the LED 26 of the light source unit 2. As a result, it is not necessary to use other members, fasteners, or the like for positioning the lens portion 15 of the light guide member 1, and it is possible to efficiently reduce the size and improve workability during assembly. be able to.
In addition, you may make it provide the guide rib etc. which guide a pair of latching protrusions 19 and 19 inserted as mentioned above in the inner surface of the both-sides wall parts 23 and 23 of the substrate case 20. FIG.

上記構成とされた本実施形態に係る導光部材１及びこれを備えた発光装置３によれば、導光板部１０の出射面部１３からの拡散光を低減させることができる。
つまり、導光板部１０の一端面部１１に、レンズ部１５を形成しているので、このレンズ部１５によってＬＥＤ２６から出射された拡散光を集光させ、導光板部１０に向けて導光することができる。従って、導光板部１０の出射面部１３からの拡散光を低減させることができ、出射面部１３から出射される光を平行光に近づけることができる。この結果、出射面部１３に沿うように集光レンズや偏光レンズを有した表面カバー等を設けた場合に、出射面部１３から出射された光を該表面カバーにおいて効率的に集光させたり、偏光させたりすることも可能となる。
また、レンズ部１５にＬＥＤ２６を受け入れる凹部１６を設けているので、ＬＥＤ２６から出射されて拡散する光を効率的に当該レンズ部１５の凹部１６の底面や内周側面に入光させることができ、当該レンズ部１５において効率的な集光が可能となる。 According to the light guide member 1 according to the present embodiment configured as described above and the light-emitting device 3 including the light guide member 1, diffused light from the exit surface portion 13 of the light guide plate portion 10 can be reduced.
That is, since the lens portion 15 is formed on the one end surface portion 11 of the light guide plate portion 10, the diffused light emitted from the LED 26 is condensed by the lens portion 15 and guided toward the light guide plate portion 10. Can do. Therefore, the diffused light from the exit surface portion 13 of the light guide plate portion 10 can be reduced, and the light emitted from the exit surface portion 13 can be brought close to parallel light. As a result, when a surface cover or the like having a condensing lens or a polarizing lens is provided along the emission surface portion 13, the light emitted from the emission surface portion 13 can be efficiently condensed on the surface cover or polarized. It is also possible to make it.
Further, since the concave portion 16 for receiving the LED 26 is provided in the lens portion 15, the light emitted from the LED 26 and diffused can be efficiently incident on the bottom surface and the inner peripheral side surface of the concave portion 16 of the lens portion 15, Efficient condensing is possible in the lens unit 15.

さらに、本実施形態では、レンズ部１５の凹部１６廻りの外周側部に凸湾曲面部１７を設けている。従って、凹部１６内に受け入れたＬＥＤ２６から出射された拡散光を、当該凸湾曲面部１７において効果的に反射させて集光でき、より効率的に導光方向へ導光させることができる。   Further, in the present embodiment, the convex curved surface portion 17 is provided on the outer peripheral side portion around the concave portion 16 of the lens portion 15. Therefore, the diffused light emitted from the LED 26 received in the concave portion 16 can be effectively reflected and condensed at the convex curved surface portion 17, and can be guided more efficiently in the light guide direction.

さらにまた、本実施形態では、凸湾曲面部１７の基端側の周縁から導光板部１０の両側面部１４，１４に向けて先細り状に傾斜する傾斜面部１８をレンズ部１５に設けている。従って、レンズ部１５の凸湾曲面部１７によって反射させて導光板部１０に向けて導光可能でありながらも、導光板部１０の両側方向に沿う幅寸法を小さくすることができる。この結果、材料コストを低減させることができるとともに、導光部材１の小型化（薄型化）を図ることができる。   Furthermore, in the present embodiment, the lens portion 15 is provided with the inclined surface portion 18 that inclines in a tapered manner from the peripheral edge on the proximal end side of the convex curved surface portion 17 toward the both side surface portions 14 and 14 of the light guide plate portion 10. Therefore, it is possible to reduce the width dimension along the both sides of the light guide plate portion 10 while being able to guide the light toward the light guide plate portion 10 by being reflected by the convex curved surface portion 17 of the lens portion 15. As a result, the material cost can be reduced, and the light guide member 1 can be reduced in size (thinned).

次に、本実施形態に係る発光装置３が備える導光部材の変形例について図３を参照して説明する。
なお、上記した例との相違点について主に説明し、同様の構成については、同一符号を付し、その説明を省略または簡略に説明する。 Next, the modification of the light guide member with which the light-emitting device 3 which concerns on this embodiment is provided is demonstrated with reference to FIG.
Note that differences from the above-described example will be mainly described, and the same components are denoted by the same reference numerals, and description thereof will be omitted or simplified.

図３（ａ）は、第１変形例に係る導光部材１Ａを備えた発光装置３を示している。
本変形例に係る導光部材１Ａは、上記した例の傾斜面部１８に代えて、導光板部１０Ａの一端面部１１とレンズ部１５Ａの凸湾曲面部１７とを略角丸長方形状の接続部１８Ａを介して連設した構成とされている。
この接続部１８Ａは、凸湾曲面部１７の基端側の周縁から導光板部１０Ａの一端面部１１に至るまで外周径が同一とされており、その幅方向両側部が導光板部１０Ａの両側面部１４Ａ，１４Ａと同一平面状に形成されている。つまり、本例では、導光板部１０Ａの幅寸法とレンズ部１５Ａの接続部１８Ａの幅寸法とを略同寸法としている。
これによれば、当該導光部材１Ａを簡易に製造できる。 FIG. 3A shows the light emitting device 3 including the light guide member 1A according to the first modification.
In the light guide member 1A according to this modification, instead of the inclined surface portion 18 of the above-described example, the one end surface portion 11 of the light guide plate portion 10A and the convex curved surface portion 17 of the lens portion 15A are connected to a substantially rounded rectangular connection portion 18A. It is set as the structure connected continuously through.
The connecting portion 18A has the same outer diameter from the peripheral edge on the proximal end side of the convex curved surface portion 17 to the one end surface portion 11 of the light guide plate portion 10A, and both widthwise side portions thereof are both side surface portions of the light guide plate portion 10A. 14A and 14A are formed in the same plane. That is, in this example, the width dimension of the light guide plate part 10A and the width dimension of the connection part 18A of the lens part 15A are set to be substantially the same dimension.
According to this, the said light guide member 1A can be manufactured simply.

なお、このような接続部１８Ａや上記した例の傾斜面部１８をレンズ部１５Ａ（１５）に設けずに、凸湾曲面部１７の基端側の周縁を導光板部１０（１０Ａ）の一端面部１１に連設する態様としてもよい。
または、凸湾曲面部１７の基端側の周縁から導光板部１０（１０Ａ）の一端面部１１に向けて拡開状（テーパ状）に傾斜する傾斜面部を設ける態様としてもよい。これによれば、より効果的に拡散光を集光させることができる。
上記何れの態様においても、レンズ部の両側部が導光板部の両側面部と連続面となるようにしてもよい。 In addition, without providing such a connecting portion 18A or the inclined surface portion 18 of the above-described example in the lens portion 15A (15), the peripheral edge on the proximal end side of the convex curved surface portion 17 is the one end surface portion 11 of the light guide plate portion 10 (10A). It is good also as an aspect connected to.
Or it is good also as an aspect which provides the inclined surface part which inclines in an expanded shape (taper shape) toward the one end surface part 11 of the light-guide plate part 10 (10A) from the periphery of the base end side of the convex curved surface part 17. FIG. According to this, diffused light can be collected more effectively.
In any of the above aspects, both side portions of the lens portion may be continuous with both side surface portions of the light guide plate portion.

図３（ｂ）は、第２変形例に係る導光部材１Ｂを示している。
本変形例に係る導光部材１Ｂは、導光板部１０Ｂの構成が上記した例とは異なる。
この導光板部１０Ｂは、両側面部１４Ｂ，１４Ｂを、反射面部１２から出射面部１３に向けて拡開するように傾斜状（テーパ状）に形成している。
このように両側面部１４Ｂ，１４Ｂを拡開状の傾斜面とすることで、反射面部１２において反射して拡散して出射面部１３に向かう拡散光を、出射面部１３に向けて集光させることができる。従って、本変形例に係る導光部材１Ｂによれば、出射面部１３から出射される拡散光をより低減させることができ、出射面部１３から出射される光を、より効果的に平行光に近づけることができる。 FIG.3 (b) has shown the light guide member 1B which concerns on a 2nd modification.
The light guide member 1B according to this modification is different from the example described above in the configuration of the light guide plate portion 10B.
The light guide plate portion 10B is formed in an inclined shape (tapered shape) so that both side surface portions 14B and 14B expand from the reflecting surface portion 12 toward the emitting surface portion 13.
Thus, by making both side surface parts 14B and 14B into an open inclined surface, the diffused light reflected and diffused at the reflecting surface part 12 and directed toward the emitting surface part 13 can be condensed toward the emitting surface part 13. it can. Therefore, according to the light guide member 1B according to the present modification, the diffused light emitted from the emission surface portion 13 can be further reduced, and the light emitted from the emission surface portion 13 is more effectively brought close to parallel light. be able to.

なお、両側面部１４Ｂ，１４Ｂの傾斜角度（反射面部１２とのなす角度）は、反射面部１２で反射して幅方向に拡散する光を出射面部１３に向けて反射させ、導光可能なように、当該導光部材１Ｂの屈折率や導光板部１０Ｂの上下寸法や幅寸法等に応じて設定するようにしてもよい。
また、本変形例に係る導光部材１Ｂに設けられるレンズ部としては、上記した各例のレンズ部１５，１５Ａの適用が可能である。この場合、レンズ部の両側部を導光板部１０Ｂの両側面部１４Ｂ，１４Ｂの形状に対応させた形状、すなわち、下向き拡開形状とし、これらが連続面となるようにしてもよく、または、これらの間の一部に段差が形成されるものとしてもよい。 The angle of inclination of both side surface portions 14B and 14B (angle formed with the reflection surface portion 12) is such that light reflected by the reflection surface portion 12 and diffused in the width direction is reflected toward the emission surface portion 13 and can be guided. The light guide member 1B may be set according to the refractive index, the vertical dimension or width dimension of the light guide plate portion 10B, and the like.
In addition, as the lens portion provided in the light guide member 1B according to this modification, the lens portions 15 and 15A of the above examples can be applied. In this case, the both side portions of the lens portion may have a shape corresponding to the shape of the side surface portions 14B and 14B of the light guide plate portion 10B, that is, a downwardly expanding shape, and these may be continuous surfaces, or these A step may be formed in a part between the two.

また、本実施形態に係る発光装置３に、導光部材１（１Ａ，１Ｂ）を外装するケーシングを設けたり、出射面部１３に沿わせて透光性乃至は透明の表面カバー等を設けたりしてもよい。本実施形態に係る導光部材１（１Ａ，１Ｂ）によれば、出射面部１３からの拡散光を低減させ、平行光に近づけることができるので、表面カバーによって光学操作（集光、偏光など）を容易に行うことができる。従って、例えば、異なる配光特性を有した表面カバーを取替え可能に取り付ける構成とすることで、種々の配光を実現することも容易に可能となる。   Further, the light-emitting device 3 according to the present embodiment is provided with a casing for covering the light guide member 1 (1A, 1B), or a light-transmitting or transparent surface cover or the like is provided along the emission surface portion 13. May be. According to the light guide member 1 (1A, 1B) according to the present embodiment, the diffused light from the emission surface portion 13 can be reduced and brought close to parallel light, so that optical operation (condensation, polarization, etc.) is performed by the surface cover. Can be easily performed. Therefore, for example, various light distributions can be easily realized by adopting a configuration in which a surface cover having different light distribution characteristics is attached in a replaceable manner.

なお、上記した各例では、凸湾曲面部１７を当該レンズ部１５（１５Ａ）の凹部１６廻りの全周に亘って設けた例を示しているが、当該レンズ部１５（１５Ａ）の幅方向両側部のみを凸湾曲面部としてもよい。これによってもＬＥＤ２６から出射されて幅方向に拡散する光を凸湾曲面部において効率的に反射させ、導光方向に向けて導光することができる。
また、レンズ部１５（１５Ａ）の凹部１６廻りの外周側部を凸湾曲面形状とする態様に代えて、レンズ部１５（１５Ａ）の凹部１６廻りの少なくとも両側部を、導光板部１０（１０Ａ，１０Ｂ）の両側面部に向けて拡開する傾斜面としてもよい。 In each of the above examples, the convex curved surface portion 17 is provided over the entire circumference of the lens portion 15 (15A) around the concave portion 16, but both sides of the lens portion 15 (15A) in the width direction are shown. Only the portion may be a convex curved surface portion. Also by this, the light emitted from the LED 26 and diffused in the width direction can be efficiently reflected at the convex curved surface portion and guided toward the light guide direction.
In addition, instead of an aspect in which the outer peripheral side portion around the concave portion 16 of the lens portion 15 (15A) has a convex curved surface shape, at least both side portions around the concave portion 16 of the lens portion 15 (15A) are provided on the light guide plate portion 10 (10A). , 10B) may be inclined surfaces that expand toward both side surface portions.

さらに、上記した例では、導光板部１０（１０Ａ，１０Ｂ）の長手方向の一端面部１１にレンズ部１５（１５Ａ）を設けた例を示しているが、長手方向の他端面部にもレンズ部１５（１５Ａ）を設け、この他端側にも光源ユニット２を取り付けるようにしてもよい。この場合は、反射面部１２を傾斜状に形成せずに、出射面部１３と略平行となるように形成してもよい。
さらにまた、上記した例では、光源として複数のＬＥＤ２６を上下に設けた例を示しているが、幅方向に複数のＬＥＤ２６を光源として設けたものとしてもよく、単一のＬＥＤ２６を光源として設けたものとしてもよい。この場合は、適宜、レンズ部を含む導光部材の形状を変形するようにすればよい。
また、上記において説明した上下や左右等の方向は便宜的に示したもので、上記した例の各導光部材１（１Ａ，１Ｂ）及びこれを備えた発光装置３の配設態様によっては、これらの方向は限定されるものではない。 Further, in the above-described example, the example in which the lens portion 15 (15A) is provided on the one end surface portion 11 in the longitudinal direction of the light guide plate portion 10 (10A, 10B) is shown. 15 (15A) may be provided, and the light source unit 2 may be attached to the other end side. In this case, you may form so that the reflective surface part 12 may be substantially parallel to the output surface part 13, without forming in a sloping shape.
Furthermore, in the above-described example, an example in which a plurality of LEDs 26 are provided vertically as light sources is shown, but a plurality of LEDs 26 may be provided as light sources in the width direction, and a single LED 26 is provided as a light source. It may be a thing. In this case, what is necessary is just to make it deform | transform the shape of the light guide member containing a lens part suitably.
Also, the directions such as up and down and left and right described above are shown for convenience, and depending on the arrangement of the light guide members 1 (1A and 1B) and the light emitting device 3 including the light guide members 1 in the above example, These directions are not limited.

１，１Ａ，１Ｂ 導光部材
３ 発光装置
１０，１０Ａ，１０Ｂ 導光板部
１１ 一端面部
１２ 反射面部
１３ 出射面部
１４，１４Ａ，１４Ｂ 側面部
１５，１５Ａ レンズ部
１６ 凹部
１７ 凸湾曲面部（側部）
１８ 傾斜面部
２６ ＬＥＤ（光源） DESCRIPTION OF SYMBOLS 1,1A, 1B Light guide member 3 Light-emitting device 10, 10A, 10B Light guide plate part 11 One end surface part 12 Reflecting surface part 13 Outgoing surface part 14, 14A, 14B Side surface part 15, 15A Lens part 16 Recessed part 17 Convex curved surface part (side part)
18 Inclined surface part 26 LED (light source)

Claims (5)

光源側に配置される一端面部、該一端面部に交差するように設けられた反射面部及びこの反射面部の反対側で前記一端面部に交差するように設けられた出射面部を有した導光板部と、
前記一端面部から前記光源側に向けて突出するように形成され、かつ、前記光源を受け入れる凹部を有するとともに前記光源からの光を集光するレンズ部と、
を備えていることを特徴とする導光部材。 A light guide plate portion having one end surface portion disposed on the light source side, a reflection surface portion provided so as to intersect the one end surface portion, and an emission surface portion provided so as to intersect the one end surface portion on the opposite side of the reflection surface portion; ,
A lens portion that is formed so as to protrude from the one end surface portion toward the light source side, and has a concave portion that receives the light source, and condenses light from the light source;
A light guide member comprising: 請求項１において、
前記導光板部の前記一端面部にそれぞれが交差するように形成された両側面部に連なるように形成された前記レンズ部の両側部は、前記凹部の周縁部に向けて先細り状の凸湾曲面形状とされていることを特徴とする導光部材。 In claim 1,
Both side portions of the lens portion formed so as to be continuous with both side surface portions that are formed so as to intersect with the one end surface portion of the light guide plate portion are tapered convex curved surface shapes toward the peripheral edge portion of the concave portion. The light guide member characterized by being made. 請求項２において、
前記レンズ部は、前記両側部の前記凸湾曲面形状とされた部位の基端側の両側縁から、前記導光板部の両側面部に向けて先細り状に傾斜する傾斜面部をさらに備えていることを特徴とする導光部材。 In claim 2,
The lens portion further includes inclined surface portions that incline in a tapered manner toward both side surface portions of the light guide plate portion from both side edges on the base end side of the convex curved surface shape of the both side portions. A light guide member. 請求項１乃至３のいずれか１項において、
前記導光板部の前記一端面部にそれぞれが交差するように形成された両側面部は、前記反射面部から前記出射面部に向けて拡開するように傾斜状に形成されていることを特徴とする導光部材。 In any one of Claims 1 thru | or 3,
Both side surface portions formed so as to intersect the one end surface portion of the light guide plate portion are formed to be inclined so as to expand from the reflection surface portion toward the emission surface portion. Light member. 請求項１乃至４のいずれか１項に記載の導光部材と、この導光部材の前記レンズ部の凹部に収容されるように配置される光源とを備えていることを特徴とする発光装置。   5. A light emitting device comprising: the light guide member according to claim 1; and a light source disposed so as to be received in a concave portion of the lens portion of the light guide member. .
JP2010237549A 2010-10-22 2010-10-22 Light guide member and light emitting device including the same Expired - Fee Related JP5603199B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015079674A1 (en) * 2013-11-29 2015-06-04 パナソニックＩｐマネジメント株式会社 Light guide member
WO2019164001A1 (en) * 2018-02-26 2019-08-29 テイ・エス テック株式会社 Lighting device
JP2019147439A (en) * 2018-02-26 2019-09-05 テイ・エス テック株式会社 Illumination device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103836436A (en) * 2012-11-21 2014-06-04 深圳市海洋王照明工程有限公司 Lamp
JP6544581B2 (en) * 2016-02-03 2019-07-17 トヨタ紡織株式会社 Vehicle lighting system
JP7451895B2 (en) * 2019-07-08 2024-03-19 三菱電機株式会社 Surface light source device and lighting device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004199930A (en) * 2002-12-17 2004-07-15 Optrex Corp Flat light source device
JP2008053013A (en) * 2006-08-23 2008-03-06 Sony Corp Backlight device, and liquid crystal display device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009128647A (en) * 2007-11-26 2009-06-11 Hitachi Displays Ltd Liquid crystal display device
CN201437963U (en) * 2009-07-07 2010-04-14 台湾奈普光电科技股份有限公司 Structural improvement for light guide plate
CN201521863U (en) * 2009-10-21 2010-07-07 瑞仪光电(苏州)有限公司 Backlight module and light guide plate thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004199930A (en) * 2002-12-17 2004-07-15 Optrex Corp Flat light source device
JP2008053013A (en) * 2006-08-23 2008-03-06 Sony Corp Backlight device, and liquid crystal display device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015079674A1 (en) * 2013-11-29 2015-06-04 パナソニックＩｐマネジメント株式会社 Light guide member
JPWO2015079674A1 (en) * 2013-11-29 2017-03-16 パナソニックＩｐマネジメント株式会社 Light guide member
WO2019164001A1 (en) * 2018-02-26 2019-08-29 テイ・エス テック株式会社 Lighting device
JP2019147440A (en) * 2018-02-26 2019-09-05 テイ・エス テック株式会社 Illumination device
JP2019147439A (en) * 2018-02-26 2019-09-05 テイ・エス テック株式会社 Illumination device

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