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JP2013073783A - Lighting device - Google Patents

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JP2013073783A
JP2013073783A JP2011211974A JP2011211974A JP2013073783A JP 2013073783 A JP2013073783 A JP 2013073783A JP 2011211974 A JP2011211974 A JP 2011211974A JP 2011211974 A JP2011211974 A JP 2011211974A JP 2013073783 A JP2013073783 A JP 2013073783A
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light
light emitting
emitting element
incident
circuit board
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JP5780087B2 (en
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Takashi Hori
隆 堀
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Nippon Seiki Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a lighting device capable of reducing a possibility of color unevenness being caused.SOLUTION: A first light emitting element 11 emits first light L1 having a first color. A second light emitting element 12 emits second light L2 having a second color. A circuit board 20 is mounted with the first light emitting element 11 and the second light emitting element 12. Light guiding members 30, 80 have first reflection faces 31d, 81d for reflecting the first light L1 and second reflection faces 31e, 81e for reflecting the second light L2. The first reflection faces 31d, 81d have first angles A1, A4 against the circuit board 20, and the second reflection faces 31e, 81e have second angles A2, A5 against the circuit board 20. The light guiding members 30, 80 have first incident faces 31a, 81a into which the first light L1 enters, and second incident faces 31b, 81b into which the second light L2 enters.

Description

本発明は、発光素子が発した光を導光部材によって被照明部材に導く照明装置に関するものである。   The present invention relates to an illuminating device that guides light emitted from a light emitting element to a member to be illuminated by a light guide member.

従来より、被照明部材（表示板，液晶表示パネル等）に照明光を照射する照明装置が種々提案されており、例えば特許文献１に開示されている。斯かる照明装置は、導光部材を介して、発光ダイオード等の発光素子が発した光にて、被照明部材を透過照明するものである。このような照明装置において、発光色が異なる複数の発光素子を用いれば、複数色の照明光を照射することができる。   Conventionally, various illumination devices for irradiating illumination light to a member to be illuminated (display panel, liquid crystal display panel, etc.) have been proposed. Such an illuminating device illuminates a member to be illuminated with light emitted from a light emitting element such as a light emitting diode via a light guide member. In such an illuminating device, if a plurality of light emitting elements having different emission colors are used, illumination light of a plurality of colors can be irradiated.

特開２００７−５２０３２号公報JP 2007-52032 A

しかしながら、発光色が異なる各発光素子が発した照明光の混合が不充分なために、被照明部材に色ムラが生じる虞があった。例えば、赤色発光素子及び緑色発光素子を用いた場合、赤色発光素子に近い箇所は赤色が濃く、緑色発光素子に近い箇所は緑色が濃くなり、赤色と緑色の混合色で均一に照明することができないという問題を有していた。
本発明は、この問題に鑑みなされたものであり、色ムラが生じる虞を低減できる照明装置を提供するものである。 However, since the illumination light emitted from the light emitting elements having different emission colors is not sufficiently mixed, there is a possibility that color unevenness may occur in the illuminated member. For example, when a red light emitting element and a green light emitting element are used, red is dark at a portion close to the red light emitting element, and green is dark at a portion close to the green light emitting element. Had the problem of not being able to.
This invention is made | formed in view of this problem, and provides the illuminating device which can reduce the possibility that a color nonuniformity will arise.

本発明は、請求項１に記載のように、第一の色を有する第一の光Ｌ１を発する第一の発光素子１１と、第二の色を有する第二の光Ｌ２を発する第二の発光素子１２と、前記第一の発光素子１１及び前記第二の発光素子１２を搭載する回路基板２０と、前記第一の光Ｌ１を反射させる第一の反射面３１ｄ，８１ｄと前記第二の光Ｌ２を反射させる第二の反射面３１ｅ，８１ｅとを有する導光部材３０，８０と、を備えた照明装置であって、前記第一の反射面３１ｄ，８１ｄは、前記回路基板２０に対して第一の角度Ａ１，Ａ４を有し、前記第二の反射面３１ｅ，８１ｅは、前記回路基板２０に対して第二の角度Ａ２、Ａ５を有するものである。   According to the present invention, the first light emitting element 11 that emits the first light L1 having the first color and the second light L2 that has the second color are emitted. The light emitting element 12, the circuit board 20 on which the first light emitting element 11 and the second light emitting element 12 are mounted, the first reflecting surfaces 31d and 81d for reflecting the first light L1, and the second light emitting element 12. A light guide member 30 and 80 having second reflecting surfaces 31e and 81e for reflecting the light L2, wherein the first reflecting surfaces 31d and 81d are located on the circuit board 20; The second reflection surfaces 31e and 81e have second angles A2 and A5 with respect to the circuit board 20, respectively.

また、本発明は、請求項２に記載のように、前記第一の反射面３１ｄ，８１ｄは、前記第一の光Ｌ１を前記第一の発光素子１１と前記第二の発光素子１２との配列方向に反射させ、前記第二の反射面３１ｅ，８１ｅは、前記第二の光２を前記配列方向に反射させるものである。   Further, in the present invention, as described in claim 2, the first reflecting surfaces 31d and 81d transmit the first light L1 between the first light emitting element 11 and the second light emitting element 12. The second reflection surfaces 31e and 81e reflect the second light 2 in the arrangement direction.

また、本発明は、請求項３に記載のように、前記導光部材３０，８０は、前記第一の光Ｌ１が入射する第一の入光面３１ａ，８１ａと、前記第二の光Ｌ２が入射する第二の入光面３１ｂ，８１ｂと、を有するものである。   Further, according to the present invention, as described in claim 3, the light guide members 30 and 80 include first light incident surfaces 31a and 81a on which the first light L1 is incident, and the second light L2. Are incident on the second light incident surfaces 31b and 81b.

また、本発明は、請求項４に記載のように、前記第一の入光面３１ａ，８１ａは、第一の曲率を有する曲面からなり、前記第二の入光面３１ｂ，８１ｂは、第二の曲率を有する曲面からなるものである。   Further, according to the present invention, the first light incident surfaces 31a and 81a are curved surfaces having a first curvature, and the second light incident surfaces 31b and 81b are It consists of a curved surface having a second curvature.

第一の反射面の傾斜角度と、第二の反射面の傾斜角度とを異ならせたことにより、色ムラを低減できる。   Color unevenness can be reduced by making the inclination angle of the first reflection surface different from the inclination angle of the second reflection surface.

本発明の第一実施形態を示す断面図。Sectional drawing which shows 1st embodiment of this invention. 同上実施形態を示す要部拡大図。The principal part enlarged view which shows embodiment same as the above. 同上実施形態を示す半値角の説明図。Explanatory drawing of the half value angle which shows embodiment same as the above. 本発明の第二実施形態を示す断面図。Sectional drawing which shows 2nd embodiment of this invention. 同上実施形態を示す要部拡大図。The principal part enlarged view which shows embodiment same as the above.

以下、添付図面に基づいて、本発明の一実施形態を説明する。図１及び図２は、第一実施形態を示す図である。照明装置は、発光素子１１，１２，１３，硬質回路基板（回路基板）２０，導光体（導光部材）３０を備えている。   Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. FIG.1 and FIG.2 is a figure which shows 1st embodiment. The illumination device includes light emitting elements 11, 12, 13, a hard circuit board (circuit board) 20, and a light guide (light guide member) 30.

発光素子（第一の発光素子）１１は、トップビュー型の赤色発光ダイオードからなるものであり、赤色光（第一の光）Ｌ１を発する。発光素子（第二の発光素子）１２は、トップビュー型の緑色発光ダイオードからなるものであり、緑色光（第二の光）Ｌ２を発する。発光素子（第三の発光素子）１３は、トップビュー型の白色発光ダイオードからなるものであり、白色光（第三の光）Ｌ３を発する。   The light emitting element (first light emitting element) 11 is a top-view type red light emitting diode, and emits red light (first light) L1. The light emitting element (second light emitting element) 12 is a top-view type green light emitting diode, and emits green light (second light) L2. The light emitting element (third light emitting element) 13 is a top-view type white light emitting diode and emits white light (third light) L3.

３個の発光素子１１，１２，１３は、列状に配置され、硬質回路基板２０に搭載されている。発光素子１１，１２，１３は、硬質回路基板２０に搭載された駆動回路（図示しない）によって、個別にオン／オフさせることができる。例えば、発光素子１１，１２，１３のうちの任意の１個のみを点灯させ、他の２個を消灯させることもできるし、発光素子１１，１２，１３のうちの任意の２個を点灯させ、他の１個を消灯させることもできる。また、３個の発光素子１１，１２，１３を同時に点灯させることもできる。   The three light emitting elements 11, 12, and 13 are arranged in a line and are mounted on the hard circuit board 20. The light emitting elements 11, 12, and 13 can be individually turned on / off by a drive circuit (not shown) mounted on the hard circuit board 20. For example, it is possible to turn on only one of the light emitting elements 11, 12, and 13 and turn off the other two, or turn on any two of the light emitting elements 11, 12, and 13. The other one can be turned off. Also, the three light emitting elements 11, 12, 13 can be turned on simultaneously.

導光体３０は、アクリル，ポリカーボネート等の透光性樹脂からなるものであり、ケース４０に保持されている。導光体３０は、発光素子１１，１２，１３が発した赤色光Ｌ１，緑色光Ｌ２，白色光Ｌ３を受光する受光部３１と、表示板５０を透過照明する照明部３２とを備えている。   The light guide 30 is made of a translucent resin such as acrylic or polycarbonate, and is held by the case 40. The light guide 30 includes a light receiving unit 31 that receives red light L1, green light L2, and white light L3 emitted from the light emitting elements 11, 12, and 13, and an illumination unit 32 that transmits and illuminates the display board 50. .

導光体３０の受光部３１は、入光面（第一の入光面）３１ａ，入光面（第二の入光面）３１ｂ，入光面（第三の入光面）３１ｃ，反射面（第一の反射面）３１ｄ，反射面（第二の反射面）３１ｅ，反射面（第三の反射面）３１ｆ，反射面３１ｋ等を有している。   The light receiving unit 31 of the light guide 30 includes a light incident surface (first light incident surface) 31a, a light incident surface (second light incident surface) 31b, a light incident surface (third light incident surface) 31c, and a reflection. It has a surface (first reflective surface) 31d, a reflective surface (second reflective surface) 31e, a reflective surface (third reflective surface) 31f, a reflective surface 31k, and the like.

受光部３１の入光面３１ａは、所定の曲率半径Ｒ１を有する球面になっており、発光素子１１が発した赤色光Ｌ１が入射する。受光部３１の入光面３１ｂは、所定の曲率半径Ｒ２を有する球面になっており、発光素子１２が発した緑色光Ｌ２が入射する。受光部３１の入光面３１ｃは、所定の曲率半径Ｒ３を有する球面になっており、発光素子１３が発した白色光Ｌ３が入射する。   The light incident surface 31a of the light receiving unit 31 is a spherical surface having a predetermined radius of curvature R1, and the red light L1 emitted from the light emitting element 11 is incident thereon. The light incident surface 31b of the light receiving unit 31 is a spherical surface having a predetermined curvature radius R2, and the green light L2 emitted from the light emitting element 12 is incident thereon. The light incident surface 31c of the light receiving unit 31 is a spherical surface having a predetermined radius of curvature R3, and the white light L3 emitted from the light emitting element 13 is incident thereon.

発光素子１１は、半値角が角度Ｂ１である指向特性を有しており、発光素子１１の光軸は、入光面３１ａの光軸に一致している。発光素子１２は、半値角が角度Ｂ２である指向特性を有しており、発光素子１２の光軸は、入光面３１ｂの光軸に一致している。発光素子１３は、半値角が角度Ｂ３である指向特性を有しており、発光素子１３の光軸は、入光面３１ｃの光軸に一致している。   The light emitting element 11 has a directional characteristic whose half-value angle is an angle B1, and the optical axis of the light emitting element 11 coincides with the optical axis of the light incident surface 31a. The light emitting element 12 has a directional characteristic whose half-value angle is an angle B2, and the optical axis of the light emitting element 12 coincides with the optical axis of the light incident surface 31b. The light emitting element 13 has a directivity characteristic whose half-value angle is an angle B3, and the optical axis of the light emitting element 13 coincides with the optical axis of the light incident surface 31c.

なお、図３に示すように、「半値角」とは、発光素子１１，１２，１３の指向特性Ｓが光軸Ｆ上の光度の半分になる角度Ｅである。   As shown in FIG. 3, the “half-value angle” is an angle E at which the directivity characteristic S of the light emitting elements 11, 12, 13 becomes half of the luminous intensity on the optical axis F.

受光部３１の反射面３１ｄは、発光素子１１の光軸上に配置されており、入光面３１ａから入射した赤色光Ｌ１を反射面３１ｋに向けて反射させる。受光部３１の反射面３１ｄは、硬質回路基板２０に対して所定角度Ａ１を有する平面になっている。導光体３０の反射面３１ｅは、発光素子１２の光軸上に配置されており、入光面３１ｂから入射した緑色光Ｌ２を反射面３１ｋに向けて反射させる。導光体３０の反射面３１ｅは、硬質回路基板２０に対して所定角度Ａ２を有する平面になっている。導光体３０の反射面３１ｆは、発光素子１３の光軸上に配置されており、入光面３１ｃから入射した白色光Ｌ３を反射面３１ｋに向けて反射させる。導光体３０の反射面３１ｆは、硬質回路基板２０に対して所定角度Ａ３を有する平面になっている。   The reflection surface 31d of the light receiving unit 31 is disposed on the optical axis of the light emitting element 11, and reflects the red light L1 incident from the light incident surface 31a toward the reflection surface 31k. The reflection surface 31 d of the light receiving unit 31 is a plane having a predetermined angle A <b> 1 with respect to the hard circuit board 20. The reflection surface 31e of the light guide 30 is disposed on the optical axis of the light emitting element 12, and reflects the green light L2 incident from the light incident surface 31b toward the reflection surface 31k. The reflection surface 31 e of the light guide 30 is a plane having a predetermined angle A <b> 2 with respect to the hard circuit board 20. The reflective surface 31f of the light guide 30 is disposed on the optical axis of the light emitting element 13, and reflects the white light L3 incident from the light incident surface 31c toward the reflective surface 31k. The reflection surface 31 f of the light guide 30 is a plane having a predetermined angle A3 with respect to the hard circuit board 20.

受光部３１の反射面３１ｄと反射面３１ｅとは、連結面３１ｇにて連結されている。受光部３１の反射面３１ｅと反射面３１ｆとは、連結面３１ｈにて連結されている。   The reflecting surface 31d and the reflecting surface 31e of the light receiving unit 31 are connected by a connecting surface 31g. The reflecting surface 31e and the reflecting surface 31f of the light receiving unit 31 are connected by a connecting surface 31h.

導光体３０の照明部３２は、側面視でＬ字形状になっており、受光部３１の反射面３１ｋで反射された赤色光Ｌ１，緑色光Ｌ２，白色光Ｌ３を、更に、反射面３２ｂで反射させて、表示板５０を透過照明する。照明部３２の後面には、反射面３２ｂで反射された赤色光Ｌ１，緑色光Ｌ２，白色光Ｌ３を拡散させる微細な溝部３２ｃが形成されている。   The illumination unit 32 of the light guide 30 is L-shaped in a side view, and the red light L1, the green light L2, and the white light L3 reflected by the reflection surface 31k of the light receiving unit 31 are further reflected on the reflection surface 32b. The display panel 50 is transmitted and illuminated. On the rear surface of the illumination unit 32, there are formed fine groove portions 32c for diffusing the red light L1, the green light L2, and the white light L3 reflected by the reflection surface 32b.

第一によれば、発光素子１１，１２，１３が発した赤色光Ｌ１，緑色光Ｌ２，白色光Ｌ３を、各々傾斜角度が異なる反射面３１ｄ，３１ｅ，３１ｆにて、３個の発光素子１１，１２，１３の配列方向に反射させることによって、赤色光Ｌ１，緑色光Ｌ２，白色光Ｌ３を混合させることができる。   According to the first, the red light L1, the green light L2, and the white light L3 emitted from the light emitting elements 11, 12, and 13 are reflected by the three light emitting elements 11 on the reflecting surfaces 31d, 31e, and 31f having different inclination angles. , 12, and 13 can be mixed with the red light L1, the green light L2, and the white light L3.

また、受光部３１の入光面３１ａ，３１ｂ，３１ｃは、発光素子１１，１２，１３の指向特性に応じた曲率を有するため、受光部３１から入射できない光を低減でき、表示板５０を高輝度で照明することができる。   In addition, since the light incident surfaces 31a, 31b, and 31c of the light receiving unit 31 have curvatures according to the directivity characteristics of the light emitting elements 11, 12, and 13, light that cannot enter from the light receiving unit 31 can be reduced, and the display board 50 can be increased. It can be illuminated with brightness.

図４及び図５は、第二実施形態を示す図である。照明装置は、発光素子１１，１２，１３，硬質回路基板２０，導光体（導光部材）８０を備えている。   4 and 5 are diagrams showing a second embodiment. The lighting device includes light emitting elements 11, 12, 13, a hard circuit board 20, and a light guide (light guide member) 80.

発光素子１１は、トップビュー型の赤色発光ダイオードからなるものであり、赤色光Ｌ１を発する。発光素子１２は、トップビュー型の緑色発光ダイオードからなるものであり、緑色光Ｌ２を発する。発光素子１３は、トップビュー型の白色発光ダイオードからなるものであり、白色光Ｌ３を発する。３個の発光素子１１，１２，１３は、列状に配置され、硬質回路基板２０に搭載されている。   The light emitting element 11 is composed of a top view type red light emitting diode, and emits red light L1. The light emitting element 12 is a top-view type green light emitting diode, and emits green light L2. The light emitting element 13 is a top-view type white light emitting diode, and emits white light L3. The three light emitting elements 11, 12, and 13 are arranged in a line and are mounted on the hard circuit board 20.

導光体８０は、アクリル，ポリカーボネート等の透光性樹脂からなるものであり、ケース９０に保持されている。導光体８０は、発光素子１１，１２，１３が発した赤色光Ｌ１，緑色光Ｌ２，白色光Ｌ３を受光する受光部１と、表示板５０を透過照明する照明部８２とを備えている。   The light guide 80 is made of a translucent resin such as acrylic or polycarbonate, and is held by the case 90. The light guide 80 includes a light receiving unit 1 that receives red light L1, green light L2, and white light L3 emitted from the light emitting elements 11, 12, and 13, and an illumination unit 82 that transmits and illuminates the display plate 50. .

導光体８０の受光部３１は、入光面（第一の入光面）８１ａ，入光面（第二の入光面）８１ｂ，入光面（第三の入光面）８１ｃ，反射面（第一の反射面）８１ｄ，反射面（第二の反射面）８１ｅ，反射面（第三の反射面）８１ｆを有している。   The light receiving unit 31 of the light guide 80 includes a light incident surface (first light incident surface) 81a, a light incident surface (second light incident surface) 81b, a light incident surface (third light incident surface) 81c, and a reflection. It has a surface (first reflective surface) 81d, a reflective surface (second reflective surface) 81e, and a reflective surface (third reflective surface) 81f.

受光部８１の入光面３１ａは、所定の曲率半径Ｒ４を有する球面になっており、発光素子１１が発した赤色光Ｌ１が入射する。受光部３１の入光面３１ｂは、所定の曲率半径Ｒ４を有する球面になっており、発光素子１２が発した緑色光Ｌ２が入射する。受光部３１の入光面３１ｃは、所定の曲率半径Ｒ４を有する球面になっており、発光素子１３が発した白色光Ｌ３が入射する。   The light incident surface 31a of the light receiving unit 81 is a spherical surface having a predetermined radius of curvature R4, and the red light L1 emitted from the light emitting element 11 is incident thereon. The light incident surface 31b of the light receiving unit 31 is a spherical surface having a predetermined radius of curvature R4, and the green light L2 emitted from the light emitting element 12 is incident thereon. The light incident surface 31c of the light receiving unit 31 is a spherical surface having a predetermined radius of curvature R4, and the white light L3 emitted from the light emitting element 13 is incident thereon.

受光部８１の反射面８１ｄは、硬質回路基板２０に対して所定角度Ａ１を有しており、入光面８１ａから入射した赤色光Ｌ１を照明部８２に向けて反射させる。導光体８０の反射面８１ｅは、硬質回路基板２０に対して所定角度Ａ２を有しており、入光面８１ｂから入射した緑色光Ｌ２を照明部８２に向けて反射させる。導光体８０の反射面８１ｆは、硬質回路基板２０に対して所定角度Ａ３を有しており、入光面３１ｃから入射した白色光Ｌ３を照明部８２に向けて反射させる。   The reflection surface 81d of the light receiving unit 81 has a predetermined angle A1 with respect to the hard circuit board 20, and reflects the red light L1 incident from the light incident surface 81a toward the illumination unit 82. The reflection surface 81e of the light guide 80 has a predetermined angle A2 with respect to the hard circuit board 20, and reflects the green light L2 incident from the light incident surface 81b toward the illumination unit 82. The reflection surface 81f of the light guide 80 has a predetermined angle A3 with respect to the hard circuit board 20, and reflects the white light L3 incident from the light incident surface 31c toward the illumination unit 82.

受光部８１の反射面８１ｄと反射面８１ｅとは、連結面８１ｇにて連結されている。受光部８１の反射面８１ｅと反射面８１ｆとは、連結面８１ｈにて連結されている。   The reflecting surface 81d and the reflecting surface 81e of the light receiving unit 81 are connected by a connecting surface 81g. The reflecting surface 81e and the reflecting surface 81f of the light receiving unit 81 are connected by a connecting surface 81h.

導光体８０の照明部８２は、側面視で略楔形状になっており、受光部８１の反射面８１ｄ，８１ｅ，８１ｆで反射された赤色光Ｌ１，緑色光Ｌ２，白色光Ｌ３にて、表示板９０を透過照明する。照明部８２の後面には、反射面８１ｄ，８１ｅ，８１ｆで反射された赤色光Ｌ１，緑色光Ｌ２，白色光Ｌ３を拡散させる微細な溝部８２ｃが形成されている。   The illumination unit 82 of the light guide 80 has a substantially wedge shape in a side view, and the red light L1, the green light L2, and the white light L3 reflected by the reflection surfaces 81d, 81e, and 81f of the light receiving unit 81, The display plate 90 is transmitted and illuminated. On the rear surface of the illumination unit 82, there are formed minute grooves 82c for diffusing the red light L1, the green light L2, and the white light L3 reflected by the reflecting surfaces 81d, 81e, and 81f.

第二実施形態によれば、発光素子１１，１２，１３が発した赤色光Ｌ１，緑色光Ｌ２，白色光Ｌ３を、各々傾斜角度が異なる反射面８１ｄ，８１ｅ，８１ｆにて、３個の発光素子１１，１２，１３の配列方向に反射させることによって、赤色光Ｌ１，緑色光Ｌ２，白色光Ｌ３を混合させることができる。   According to the second embodiment, the red light L1, the green light L2, and the white light L3 emitted from the light emitting elements 11, 12, and 13 are emitted by the reflecting surfaces 81d, 81e, and 81f having different inclination angles. The red light L1, the green light L2, and the white light L3 can be mixed by reflecting in the arrangement direction of the elements 11, 12, and 13.

本発明は、第一，第二実施形態に限定されるものではなく、種々の変形が可能である。例えば、第一，第二実施形態は、表示板５０を透過照明するものであったが、導光体３０，８０の照明部３２，８２を視認するものであっても良い。   The present invention is not limited to the first and second embodiments, and various modifications can be made. For example, in the first and second embodiments, the display plate 50 is transmitted and illuminated, but the illumination units 32 and 82 of the light guides 30 and 80 may be visually recognized.

１１ 発光素子（第一の発光素子）
１２ 発光素子（第二の発光素子）
２０ 硬質回路基板（回路基板）
３０ 導光体（導光部材）
３１ａ 入光面（第一の入光面）
３１ｂ 入光面（第二の入光面）
３１ｄ 反射面（第一の反射面）
３１ｅ 反射面（第二の反射面）
８０ 導光体（導光部材）
８１ａ 入光面（第一の入光面）
８１ｂ 入光面（第二の入光面）
８１ｄ 反射面（第一の反射面）
８１ｅ 反射面（第二の反射面）
Ｌ１ 赤色光（第一の光）
Ｌ２ 緑色光（第二の光）
Ａ１ 所定角度（第一の角度）
Ａ２ 所定角度（第二の角度）
Ａ４ 所定角度（第一の角度）
Ａ５ 所定角度（第二の角度）
11 Light emitting element (first light emitting element)
12 Light emitting element (second light emitting element)
20 Hard circuit board (circuit board)
30 Light guide (light guide member)
31a Light incident surface (first light incident surface)
31b Light incident surface (second light incident surface)
31d Reflective surface (first reflective surface)
31e Reflective surface (second reflective surface)
80 Light guide (light guide member)
81a Light incident surface (first light incident surface)
81b Light incident surface (second light incident surface)
81d Reflective surface (first reflective surface)
81e Reflective surface (second reflective surface)
L1 Red light (first light)
L2 Green light (second light)
A1 Predetermined angle (first angle)
A2 Predetermined angle (second angle)
A4 Predetermined angle (first angle)
A5 Predetermined angle (second angle)

Claims (4)

第一の色を有する第一の光を発する第一の発光素子と、第二の色を有する第二の光を発する第二の発光素子と、前記第一の発光素子及び前記第二の発光素子を搭載する回路基板と、前記第一の光を反射させる第一の反射面と前記第二の光を反射させる第二の反射面とを有する導光部材と、を備えた照明装置であって、
前記第一の反射面は、前記回路基板に対して第一の角度を有し、前記第二の反射面は、前記回路基板に対して第二の角度を有することを特徴とする照明装置。 A first light emitting element emitting a first light having a first color; a second light emitting element emitting a second light having a second color; the first light emitting element and the second light emitting. An illumination device comprising: a circuit board on which an element is mounted; and a light guide member having a first reflection surface that reflects the first light and a second reflection surface that reflects the second light. And
The lighting device according to claim 1, wherein the first reflecting surface has a first angle with respect to the circuit board, and the second reflecting surface has a second angle with respect to the circuit board. 前記第一の反射面は、前記第一の光を前記第一の発光素子と前記第二の発光素子との配列方向に反射させ、前記第二の反射面は、前記第二の光を前記配列方向に反射させることを特徴とする請求項１に記載の照明装置。   The first reflecting surface reflects the first light in an arrangement direction of the first light emitting element and the second light emitting element, and the second reflecting surface reflects the second light in the direction described above. The illumination device according to claim 1, wherein the illumination device reflects the light in the arrangement direction. 前記導光部材は、前記第一の光が入射する第一の入光面と、前記第二の光が入射する第二の入光面と、を有することを特徴とする請求項１に記載の照明装置。   The light guide member has a first light incident surface on which the first light is incident and a second light incident surface on which the second light is incident. Lighting equipment. 前記第一の入光面は、第一の曲率を有する曲面からなり、前記第二の入光面は、第二の曲率を有する曲面からなることを特徴とする請求項２に記載の照明装置。
The lighting device according to claim 2, wherein the first light incident surface is a curved surface having a first curvature, and the second light incident surface is a curved surface having a second curvature. .
JP2011211974A 2011-09-28 2011-09-28 Lighting device Expired - Fee Related JP5780087B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115336241A (en) * 2020-04-03 2022-11-11 三菱电机株式会社 Illumination device and image scanner
JP2023058268A (en) * 2021-10-13 2023-04-25 株式会社ジャパンディスプレイ lighting equipment

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004031180A (en) * 2002-06-27 2004-01-29 Kawaguchiko Seimitsu Co Ltd Backlight device
JP2008026854A (en) * 2006-03-02 2008-02-07 Denso Corp Display device
WO2010050489A1 (en) * 2008-10-30 2010-05-06 日本ゼオン株式会社 Light source device and liquid cristal display device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004031180A (en) * 2002-06-27 2004-01-29 Kawaguchiko Seimitsu Co Ltd Backlight device
JP2008026854A (en) * 2006-03-02 2008-02-07 Denso Corp Display device
WO2010050489A1 (en) * 2008-10-30 2010-05-06 日本ゼオン株式会社 Light source device and liquid cristal display device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115336241A (en) * 2020-04-03 2022-11-11 三菱电机株式会社 Illumination device and image scanner
CN115336241B (en) * 2020-04-03 2024-04-09 三菱电机株式会社 Illumination device and image scanner
JP2023058268A (en) * 2021-10-13 2023-04-25 株式会社ジャパンディスプレイ lighting equipment
JP7682760B2 (en) 2021-10-13 2025-05-26 株式会社ジャパンディスプレイ Lighting equipment

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