WO2013128771A1 - Lighting module and lighting device provided with same - Google Patents

Lighting module and lighting device provided with same Download PDF

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Publication number
WO2013128771A1
WO2013128771A1 PCT/JP2012/083781 JP2012083781W WO2013128771A1 WO 2013128771 A1 WO2013128771 A1 WO 2013128771A1 JP 2012083781 W JP2012083781 W JP 2012083781W WO 2013128771 A1 WO2013128771 A1 WO 2013128771A1
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WO
WIPO (PCT)
Prior art keywords
light
incident
total reflection
light source
lighting
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Application number
PCT/JP2012/083781
Other languages
French (fr)
Japanese (ja)
Inventor
良 阿部
西岡　澄人
泰徳 金澤
酒井　啓至
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シャープ株式会社
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Publication of WO2013128771A1 publication Critical patent/WO2013128771A1/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
    • G02B6/0081—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
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • 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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of 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
    • G02B6/0011—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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0045—Means for improving the coupling-out of light from 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
    • G02B6/0046—Tapered light guide, e.g. wedge-shaped light guide

Definitions

  • the present invention relates to a lighting module used as room lighting, and more specifically, includes a light source and a light guide, and a lighting module that emits light from the light source from a light emitting surface through a light guide plate, and a lighting device including the same.
  • a lighting module used as room lighting includes a light source and a light guide, and a lighting module that emits light from the light source from a light emitting surface through a light guide plate, and a lighting device including the same.
  • Patent Document 1 proposes a lighting fixture that includes a plurality of light sources and a light guide plate made of a light-transmitting material optically coupled to the light sources.
  • light from the light source is incident from the end face (incident surface) of the light guide plate, and the light of the light source is emitted to the other surface side by the reflective layer provided on one surface of the light guide plate.
  • the present invention has been made to solve the above-described problems, and realizes an illumination module and an illumination device that can prevent the occurrence of bright and dark stripes of light and can obtain a more uniform illuminance distribution. With the goal.
  • the illumination module of the present invention includes (1) a light source, (2) an incident surface on which light from the light source is incident, an adjacent surface of the incident surface, and facing each other, The first total reflection surface and the second total reflection surface that totally reflect the light incident from the incident surface and the incident surface, while being totally reflected between the first total reflection surface and the second total reflection surface. And a light guide having an exit surface for diffusing and exiting the progressed light.
  • the light traveling while being totally reflected between the first total reflection surface and the second total reflection surface is an angle with respect to the output surface when the distance between the input surface and the output surface reaches the output surface when the predetermined condition is satisfied.
  • the intensity of the light intensity alternately occurs.
  • the exit surface diffuses and emits light, the intensity of the light amount can be suppressed according to the angle with respect to the exit surface, and the light stripes on the irradiated surface can be reduced. Irradiation can be performed uniformly without generating.
  • the exit surface may not be parallel to the entrance surface. Therefore, the irradiation direction can be changed by appropriately changing the angle of the exit surface with respect to the entrance surface.
  • the exit surface is preferably a rough surface. Therefore, it is possible to easily realize an emission surface having light diffusibility without using another member such as a diffusion sheet.
  • a diffusion reflection layer that diffuses and reflects the light that travels while totally reflecting between the first total reflection surface and the second total reflection surface is formed on the emission surface. May be. Thereby, an irradiation direction can be changed easily.
  • the illumination device of the present invention is characterized by comprising the above illumination module and a lighting means for lighting the light source.
  • the illumination device of the present invention is preferably installed so that the traveling direction of the light emitted from the emission surface is a direction toward the floor surface. Thereby, a floor surface and a desktop can be irradiated uniformly.
  • the illumination module or the illumination device of the present invention it is possible to prevent the occurrence of bright and dark stripes of light and to obtain a more uniform illuminance distribution.
  • FIG. 2 is a cross-sectional view taken along the line XX in FIG. 1A, showing the internal structure of the illumination module. It is a figure which shows the structure of the light source with which an illumination module is provided.
  • FIG. 1 It is a perspective view which shows the illuminating device provided with the illumination module. It is a figure which shows the irradiation direction of the illumination module which concerns on another embodiment of this invention. It is a figure explaining the relationship between the shape of a light guide, and the strength of light quantity.
  • FIG. 1A is a perspective view showing an illumination module 100 according to the present embodiment
  • FIG. 1B is a diagram showing an internal structure of the illumination module 100, and is an XX in FIG. It is sectional drawing.
  • the illumination module 100 includes a light source 1, a light guide 2, and a fixing member 3 that fixes the light source 1 and the light guide 2.
  • the coupling portion reflecting member 4 is provided.
  • the light guide 2 is mainly made of an acrylic resin having translucency, and an incident surface 21 on which light from the light source 1 is incident, and an exit from which the light incident from the incident surface 21 is opposed to the incident surface 21.
  • the light guide 2 includes a first total reflection surface 23 and a second total reflection surface 24 that are adjacent to the incident surface 21 and face each other, and totally reflect light incident from the incident surface 21. Yes. Thereby, the light incident from the incident surface 21 reaches the emission surface 22 and is emitted while repeating total reflection by the first total reflection surface 23 and the second total reflection surface 24.
  • the light guide 2 is plate-shaped, and the entrance surface 21 and the exit surface 22 facing each other are the end surfaces, and the first total reflection surface 23 and the second total reflection surface 24 are in the thickness direction.
  • the surface is perpendicular to
  • the material used as the light guide 2 is made of acrylic resin, the material is not limited to this, and it has translucency such as PC (polycarbonate) or PS (polystyrene).
  • PC polycarbonate
  • PS polystyrene
  • any material can be used as long as the guided light can extract the light from the emission surface 22.
  • the light source 1 is disposed to face the incident surface 21 of the light guide 2.
  • the light source 1 is composed of a plurality of LEDs.
  • the light source 1 has its light output adjusted by a light source control means (not shown), and as a result, the amount of light incident on the incident surface 21 is adjusted.
  • FIG. 2 is a diagram showing a detailed configuration of the light source 1.
  • the light source 1 includes a plurality of white LEDs 111 and light bulb color LEDs 112, and the white LEDs 111 and the light bulb color LEDs 112 are alternately arranged in a row.
  • the white LEDs 111 and the light bulb color LEDs 112 are alternately arranged in a row.
  • the light source 1 can control the light amount and the color tone by the light source control means.
  • white and bulb-colored LEDs (light emitters) arranged in a row are used as the configuration of the light source for color tone control, but the type and color of the light emitter to be used, The arrangement is not limited to this, and the type, color, arrangement, and number may be appropriately determined according to the purpose.
  • a coupling portion reflecting member 4 is provided in the vicinity of the coupling portion between the light source 1 and the light guide 2. Since the light emitted from the light source 1 has a spread, some light having a large radiation angle is not incident on the incident surface 21. Therefore, the coupling portion reflecting member 4 is arranged so that light that is off the incident surface 21 is guided again to the incident surface 21 by reflection, and the utilization efficiency of the light from the light source 1 can be improved.
  • the light source 1 is fixed to the fixing member 3 by means such as screwing or adhesive tape.
  • FIG. 3 is a diagram illustrating a method of positioning the light guide 2 with respect to the fixing member 3.
  • a positioning convex portion 31 is provided on the fixed member 3
  • a receiving portion 25 is provided on the light guide 2
  • the positioning of the light guide 2 with respect to the fixed member 3 is performed for positioning. This is done by engaging the convex portion 31 and the receiving portion 25.
  • the positioning projection 31 and the receiving portion 25 are engaged with each other so that the alignment between the light source 1 and the incident surface 21 of the light guide 2 can be accurately and easily performed. It is possible to do it.
  • the light guide 2 is prevented from falling off the fixing member 3. ing.
  • the positioning convex portion 31 and the receiving portion 25 are engaged with each other, it is preferable that there is a gap between the positioning convex portion 31 and the receiving portion 25. This prevents the light guide 2 from being stressed even if heat generated from the light source 1 or expansion or contraction of the light guide 2 due to changes in the environmental temperature occurs, and the light guide 2 is distorted or bent. It is for preventing.
  • the positioning convex portion 31 is used as an engaging means with the receiving portion 25 of the light guide 2.
  • the present invention is not limited to this, and for example, as shown in FIG. Any structure that can prevent the light guide 2 from falling off the fixing member 3 may be used.
  • the shape of the receiving portion 25 is also U-shaped in the present embodiment, but is not limited to this as long as it is a shape that can be engaged with a positioning structure such as the positioning convex portion 31 and the screw 32.
  • the size, shape, position, and number of the positioning convex portion 31 and the receiving portion 25 may be appropriately set according to the specifications of the illumination module 100.
  • the shape of the fixing member 3 may be determined in consideration of design and the like. Since the light source 1 is fixed to the fixing member 3, the material of the fixing member 3 is a metal material having high thermal conductivity so that heat generated from the light source 1 can be efficiently transferred at the time of lighting and can be dissipated to the outside. It is preferable to do.
  • the exit surface 22 of the light guide 2 is a rough surface, and has a function of diffusing and exiting light that has passed through the exit surface 22.
  • the rough surface is a surface that has not been subjected to a smoothing polishing process and has a large number of minute irregularities, and does not produce a bright and dark stripe pattern.
  • FIG. 9 is a diagram illustrating the relationship between the shape of the light guide and the intensity of light.
  • the thickness of the plate-shaped light guide 2 is t
  • the distance between the incident surface 21 and the emission surface 22 is L
  • the maximum emission angle of the light source 1 is ⁇ , L ⁇ t / (2 tan ⁇ )
  • the intensity of the light intensity is alternately generated according to the angle with respect to the output surface 22. This is because light is totally reflected by the first total reflection surface 23 and the second total reflection surface 24 inside the light guide 2.
  • all end surfaces including the end surface serving as the exit surface are polished.
  • the intensity of the light intensity can be suppressed by making the emission surface 22 rough as in the present embodiment and imparting light diffusibility to the emission surface 22.
  • a more uniform illuminance distribution can be obtained on the irradiation surface such as the floor surface.
  • the exit surface 22 is a rough surface in this embodiment, but the means for imparting light diffusibility to the exit surface 22 is not limited to this, for example, The present invention is not limited to this as long as the emitted light is diffused and the intensity of the light quantity according to the emission angle is suppressed by, for example, attaching a translucent diffusion sheet to the emission surface 22 that is a polished surface.
  • the exit surface 22 may be parallel to the entrance surface 21 or may be inclined with respect to the entrance surface 21 according to the position of the illumination surface to be irradiated.
  • the direction of outgoing light from the outgoing surface 22 can be changed by making the shape of the outgoing surface 22 tapered. Thereby, it can irradiate to the irradiation surface of arbitrary positions. Further, by making the exit surface 22 rough as described above, it is possible to obtain a uniform illuminance distribution having no bright and dark stripes on any irradiation surface.
  • the exit surface 22 may be a rough surface, and a reflective layer may be formed on the exit surface 22 using a reflective sheet, a reflective paint, or the like.
  • a diffused reflection sheet or a diffuse reflection paint is used on the exit surface 22 to provide a reflective layer that imparts light diffusibility to the exit surface 22 and also provides reflectivity. What is necessary is just to form.
  • the shape of the emission surface 22 is a taper type here, the shape is not limited to this, and any shape may be used as long as the direction of the emitted light from the emission surface 22 can be changed.
  • FIG. 7 is a diagram illustrating an example of a lighting device according to the present embodiment.
  • the 7 includes a lighting unit 20, a lighting module 100, and a wire 30 for connecting the lighting unit 20 and the lighting module 100.
  • the lighting unit 20 is for supplying power for causing the light source 1 to emit light, and is installed on the top surface.
  • the illumination module 100 is suspended from the lighting unit 20 by a wire 30.
  • the lower end of the wire 30 is connected to the fixing member 3 of the illumination module 100.
  • the hanging wire 30 may be used as a wiring, or a wiring connecting the lighting unit 20 and the light source 1 may be arranged separately from the wire 30. .
  • the lighting module 100 may be fixed directly to the ceiling.
  • the lighting unit 20 disposed on the ceiling and the light source 1 may be connected by wiring.
  • the illumination module 100 By arranging the illumination module 100 as shown in FIG. 7 so that the traveling direction of the light emitted from the emission surface 22 is directed toward the floor surface, the floor surface and the table are uniformly free of bright and dark stripes. An illuminance distribution can be obtained.
  • FIG. 8 is a diagram illustrating an irradiation direction of the illumination module 200 according to the present embodiment.
  • a diffusion pattern is applied to a part of at least one of the first total reflection surface 23 and the second total reflection surface 24, and the surface 1 differs from the first embodiment in that a part of the light traveling inside the light guide 2 can be emitted.
  • the diffusion pattern applied to at least one of the first total reflection surface 23 and the second total reflection surface 24 is formed by diffusion printing, a prism, a microlens, or the like. With these diffusion patterns, a part of the light from the light source 1 incident from the incident surface 21 can be extracted from the first total reflection surface 23 and the second total reflection surface 24 on which the diffusion pattern is formed. That is, incident light incident from the incident surface 21 is repeatedly totally reflected to guide the inside of the light guide 2, but one of at least one of the first total reflection surface 23 and the second total reflection surface 24. When light is incident on the diffusion pattern applied to the part, the incident light is diffused by the diffusion pattern, so that the total reflection condition is broken and light is extracted from the light guide 2.
  • means for imparting diffusibility to extract light from at least one of the first total reflection surface 23 and the second total reflection surface 24 of the light guide 2 is not limited to the method of applying the diffusion pattern.
  • the same effect can be obtained even if a molded product in which a diffusive material is mixed in the entire light-transmitting material or in the vicinity of the surface layer is used as the light guide 2.
  • the diffusing property is imparted by making the emission surface 22 rough, it is possible to suppress the intensity of light intensity depending on the emission angle and to prevent the occurrence of bright and dark stripes on the irradiated surface. It is possible to obtain a uniform illuminance distribution.
  • the illumination modules 100 and 200 include (1) the light source 1, (2) the incident surface 21 on which the light from the light source 1 is incident, and adjacent to the incident surface 21. And the first total reflection surface 23 and the second total reflection surface 24 that totally reflect the light incident from the incident surface 21, and the first total reflection surface 23 and the second total reflection surface 24 that face the incident surface 21. And a light guide body 2 having an emission surface 22 that diffuses and emits light that has traveled while being totally reflected between the total reflection surfaces 24.
  • the light source 1 is configured by an LED.
  • the present invention is not limited to this, and any light source capable of coupling light to the light guide 2 such as an organic EL can be realized. It is.
  • the present invention can be applied to an irradiation apparatus that irradiates a floor surface or the like.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)

Abstract

Provided is a lighting module that prevents light/dark striping of emitted light, and obtains a more uniform illumination intensity distribution. A lighting module (100) is provided with a light source and a light-guide plate (2) which has: an incident surface on which light from the light source is incident; a first fully reflective surface and a second fully reflective surface for fully reflecting light incident from the incident surface, and positioned adjacent to the incident surface and so as to face one another; and an emission surface (22) for fully reflecting between the first fully reflective surface and the second fully reflective surface while diffusing and emitting transmitted light, and positioned so as to face the incident surface.

Description

照明モジュール、及びこれを備えた照明装置LIGHTING MODULE AND LIGHTING DEVICE HAVING THE SAME
　本発明は、室内照明として使用される照明モジュールに関し、更に詳しくは、光源と導光体とを含み、光源からの光が導光板を通して発光面から出射する照明モジュール、およびこれを備えた照明装置に関する。 The present invention relates to a lighting module used as room lighting, and more specifically, includes a light source and a light guide, and a lighting module that emits light from the light source from a light emitting surface through a light guide plate, and a lighting device including the same. About.
　近年、導光板を利用した薄型の照明装置が種々提案されている。特許文献１には、複数個の光源と、光源と光学的に結合された透光性を有する材料からなる導光板とから構成された照明器具が提案されている。上記照明器具では、光源からの光を導光板の端面（入射面）から入射させ、導光板の一面に設けた反射層により他面側へ光源の光が出射される。 In recent years, various thin lighting devices using a light guide plate have been proposed. Patent Document 1 proposes a lighting fixture that includes a plurality of light sources and a light guide plate made of a light-transmitting material optically coupled to the light sources. In the lighting apparatus, light from the light source is incident from the end face (incident surface) of the light guide plate, and the light of the light source is emitted to the other surface side by the reflective layer provided on one surface of the light guide plate.
特開２００７－８０５３９号公報（２００７年３月２９日公開）JP 2007-80539 A (published March 29, 2007)
　しかしながら、特許文献１に示された照明器具では、反射層を設けた面と対向する面の他に、導光板の入射面と対向して位置する端面からも光が出射される。端面からの出射光は、端面からの出射角度に応じて光量の強弱が交互に発生することがあり、端面からの出射光を床面等の被照射面に照射した場合、明暗の縞模様が投影されてしまう。 However, in the luminaire shown in Patent Document 1, light is emitted from an end face located opposite to the incident face of the light guide plate in addition to the face opposite to the face provided with the reflective layer. The light emitted from the end face may alternately vary in intensity depending on the angle of exit from the end face. Projected.
　本発明は、上記課題を解決するためになされたものであり、光の明暗の縞模様の発生を防止し、より均一な照度分布を得ることが可能な照明モジュール、及び照明装置を実現することを目的とする。 The present invention has been made to solve the above-described problems, and realizes an illumination module and an illumination device that can prevent the occurrence of bright and dark stripes of light and can obtain a more uniform illuminance distribution. With the goal.
　上記の課題を解決するために、本発明の照明モジュールは、（１）光源と、（２）上記光源からの光が入射する入射面と、当該入射面に隣接し、かつ互いに対向して、上記入射面から入射した光を全反射させる第１全反射面及び第２全反射面と、上記入射面に対向し、上記第１全反射面及び第２全反射面の間を全反射しながら進行した光を拡散させて出射する出射面とを有する導光体と、を備えることを特徴とする。 In order to solve the above problems, the illumination module of the present invention includes (1) a light source, (2) an incident surface on which light from the light source is incident, an adjacent surface of the incident surface, and facing each other, The first total reflection surface and the second total reflection surface that totally reflect the light incident from the incident surface and the incident surface, while being totally reflected between the first total reflection surface and the second total reflection surface. And a light guide having an exit surface for diffusing and exiting the progressed light.
　第１全反射面及び第２全反射面の間を全反射しながら進行する光は、入射面と出射面との距離が所定の条件を満たす場合、出射面に到達したときに出射面に対する角度に応じて光量の強弱が交互に発生する強弱が発生する。しかしながら、上記の構成によれば出射面が光を拡散させて出射するため、このような出射面に対する角度に応じて光量の強弱を抑えることができ、被照射面における光の明暗の縞模様を発生させることなく均一に照射させることができる。 The light traveling while being totally reflected between the first total reflection surface and the second total reflection surface is an angle with respect to the output surface when the distance between the input surface and the output surface reaches the output surface when the predetermined condition is satisfied. Depending on the intensity, the intensity of the light intensity alternately occurs. However, according to the above configuration, since the exit surface diffuses and emits light, the intensity of the light amount can be suppressed according to the angle with respect to the exit surface, and the light stripes on the irradiated surface can be reduced. Irradiation can be performed uniformly without generating.
　さらに、本発明の照明モジュールにおいて、上記出射面は、上記入射面と平行ではなくてもよい。これにより、入射面に対する出射面の角度を適宜変えることにより、照射方向を変更させることができる。 Furthermore, in the illumination module of the present invention, the exit surface may not be parallel to the entrance surface. Thereby, the irradiation direction can be changed by appropriately changing the angle of the exit surface with respect to the entrance surface.
　さらに、本発明の照明モジュールにおいて、上記出射面は粗面であることが好ましい。これにより、拡散シートなどの別の部材を使用することなく、光の拡散性を有する出射面を容易に実現することができる。 Furthermore, in the illumination module of the present invention, the exit surface is preferably a rough surface. Thereby, it is possible to easily realize an emission surface having light diffusibility without using another member such as a diffusion sheet.
　さらに、本発明の照明モジュールにおいて、上記出射面には、上記第１全反射面及び第２全反射面の間を全反射しながら進行した光を拡散させるとともに反射させる拡散反射層が形成されていてもよい。これにより、照射方向を容易に変更させることができる。 Furthermore, in the illumination module of the present invention, a diffusion reflection layer that diffuses and reflects the light that travels while totally reflecting between the first total reflection surface and the second total reflection surface is formed on the emission surface. May be. Thereby, an irradiation direction can be changed easily.
　また、本発明の照明装置は、上記の照明モジュールと、上記光源を点灯させる点灯手段と、を備えることを特徴とする。 Moreover, the illumination device of the present invention is characterized by comprising the above illumination module and a lighting means for lighting the light source.
　上記の構成によっても、光の明暗の縞模様の発生を防止し、より均一な照度分布を得ることが可能な照明装置を実現することができる。 Also with the above configuration, it is possible to realize an illumination device that can prevent the occurrence of light and dark stripes of light and obtain a more uniform illuminance distribution.
　さらに、本発明の照明装置は、上記出射面から出射された光の進行方向が床面に向かう方向となるように設置されることが好ましい。これにより、床面や卓上を均一に照射することができる。 Furthermore, the illumination device of the present invention is preferably installed so that the traveling direction of the light emitted from the emission surface is a direction toward the floor surface. Thereby, a floor surface and a desktop can be irradiated uniformly.
　本発明の照明モジュールまたは照明装置によれば、光の明暗の縞模様の発生を防止し、より均一な照度分布を得ることができるという効果を奏する。 According to the illumination module or the illumination device of the present invention, it is possible to prevent the occurrence of bright and dark stripes of light and to obtain a more uniform illuminance distribution.
本発明の一実施形態に係る照明モジュールの構成を示す斜視図である。It is a perspective view which shows the structure of the illumination module which concerns on one Embodiment of this invention. 照明モジュールの内部構造を示す、図１（Ａ）におけるＸ－Ｘ断面図である。FIG. 2 is a cross-sectional view taken along the line XX in FIG. 1A, showing the internal structure of the illumination module. 照明モジュールが備える光源の構成を示す図である。It is a figure which shows the structure of the light source with which an illumination module is provided.
　上記液晶表示装置が備えるシャーシの全体構成を示す斜視図である。
固定部材に対する導光体の位置決め方法を示す図である。 導光体を固定部材に固定するための別の方法を示す図である。 従来の導光体による照射状態を示す図である。 本発明の実施形態に係る導光体による照射状態を示す図である、 出射面の形状をテーパー型としたときの出射光の方向を示す図である。 出射面の形状をテーパー型とし、出射面に拡散反射層を形成したときの出射光の方向を示す図である。 照明モジュールを備えた照明装置を示す斜視図である。 本発明の別の実施形態に係る照明モジュールの照射方向を示す図である。 導光体の形状と光量の強弱との関係を説明する図である。 It is a perspective view which shows the whole structure of the chassis with which the said liquid crystal display device is provided.
It is a figure which shows the positioning method of the light guide with respect to a fixing member. It is a figure which shows another method for fixing a light guide to a fixing member. It is a figure which shows the irradiation state by the conventional light guide. It is a figure which shows the irradiation state by the light guide which concerns on embodiment of this invention. It is a figure which shows the direction of the emitted light when the shape of an output surface is made into a taper type. It is a figure which shows the direction of an emitted light when the shape of an output surface is made into a taper type | mold and a diffused reflection layer is formed in an output surface. It is a perspective view which shows the illuminating device provided with the illumination module. It is a figure which shows the irradiation direction of the illumination module which concerns on another embodiment of this invention. It is a figure explaining the relationship between the shape of a light guide, and the strength of light quantity.
　＜実施形態１＞
　以下、本発明の実施形態１に係る照明モジュール１００について、図１～図７に基づいて説明する。なお、図面において、同一の参照符号は、同一部分または相当部分を表すものとする。 <Embodiment 1>
Hereinafter, an illumination module 100 according to Embodiment 1 of the present invention will be described with reference to FIGS. In the drawings, the same reference numerals represent the same or corresponding parts.
　図１（Ａ）は、本実施形態に係る照明モジュール１００を示す斜視図であり、図１（Ｂ）は、照明モジュール１００の内部構造を示す図であり、図１（Ａ）におけるＸ－Ｘ断面図である。 FIG. 1A is a perspective view showing an illumination module 100 according to the present embodiment, and FIG. 1B is a diagram showing an internal structure of the illumination module 100, and is an XX in FIG. It is sectional drawing.
　（照明装置の構成）
　本実施例における照明モジュール１００は、図１（Ａ）及び図１（Ｂ）に示すように、光源１と、導光体２と、光源１と導光体２とを固定する固定部材３と、結合部反射部材４を備えている。 (Configuration of lighting device)
As shown in FIGS. 1A and 1B, the illumination module 100 according to the present embodiment includes a light source 1, a light guide 2, and a fixing member 3 that fixes the light source 1 and the light guide 2. The coupling portion reflecting member 4 is provided.
　（導光体について）
　導光体２は、主に透光性をもつアクリル樹脂から成り、光源１からの光が入射する入射面２１と、入射面２１に対向し、入射面２１から入射された光が出射する出射面２２とを有している。また、導光体２は、入射面２１に隣接し、かつ互いに対向して、入射面２１から入射された光を全反射させる第１全反射面２３及び第２全反射面２４を有している。これにより、入射面２１から入射した光は、第１全反射面２３及び第２全反射面２４により全反射を繰り返しながら出射面２２に到達して出射する。 (About light guide)
The light guide 2 is mainly made of an acrylic resin having translucency, and an incident surface 21 on which light from the light source 1 is incident, and an exit from which the light incident from the incident surface 21 is opposed to the incident surface 21. Surface 22. The light guide 2 includes a first total reflection surface 23 and a second total reflection surface 24 that are adjacent to the incident surface 21 and face each other, and totally reflect light incident from the incident surface 21. Yes. Thereby, the light incident from the incident surface 21 reaches the emission surface 22 and is emitted while repeating total reflection by the first total reflection surface 23 and the second total reflection surface 24.
　なお、本実施形態では導光体２は板状であり、互いに対向する入射面２１及び出射面２２がその端面となっており、第１全反射面２３及び第２全反射面２４が厚み方向に垂直な面となっている。 In the present embodiment, the light guide 2 is plate-shaped, and the entrance surface 21 and the exit surface 22 facing each other are the end surfaces, and the first total reflection surface 23 and the second total reflection surface 24 are in the thickness direction. The surface is perpendicular to
　また、本実施形態では、導光体２として使用する材質をアクリル樹脂としているが、材質についてはこれに限らず、例えばＰＣ（ポリカーボネート）やＰＳ（ポリスチレン）等の透光性を有しており、かつ、導光した光が出射面２２から光を取り出すことが可能な材質であればよい。 Moreover, in this embodiment, although the material used as the light guide 2 is made of acrylic resin, the material is not limited to this, and it has translucency such as PC (polycarbonate) or PS (polystyrene). In addition, any material can be used as long as the guided light can extract the light from the emission surface 22.
　（光源について）
　光源１は、導光体２の入射面２１に対向して配置されている。本実施形態では、光源１は複数のＬＥＤにより構成されている。光源１は、光源制御手段（図示しない）によって、光出力が調整され、その結果、入射面２１に入射される光量が調整される。 (About light source)
The light source 1 is disposed to face the incident surface 21 of the light guide 2. In the present embodiment, the light source 1 is composed of a plurality of LEDs. The light source 1 has its light output adjusted by a light source control means (not shown), and as a result, the amount of light incident on the incident surface 21 is adjusted.
　図２は、光源１の詳細な構成を示す図である。光源１は、白色ＬＥＤ１１１と電球色ＬＥＤ１１２とを複数有しており、白色ＬＥＤ１１１と電球色ＬＥＤ１１２とが交互に並び列状に配置されている。このような構成とすることで、出射面２２からの取り出し光の色調調整が可能となっている。例えば、出射面２２から白色の光を取り出したい場合は、白色ＬＥＤ１１１のみを点灯させればよく、電球色の光を取り出したい場合は、電球色ＬＥＤ１１２のみを点灯させればよい。また、白色ＬＥＤ１１１と、電球色ＬＥＤ１１２を同時に点灯し、各色の光量の割合を調整することにより、出射面２２からの取り出し光の色調を変化させることが可能となる。 FIG. 2 is a diagram showing a detailed configuration of the light source 1. The light source 1 includes a plurality of white LEDs 111 and light bulb color LEDs 112, and the white LEDs 111 and the light bulb color LEDs 112 are alternately arranged in a row. By adopting such a configuration, it is possible to adjust the color tone of the light extracted from the emission surface 22. For example, when white light is to be extracted from the emission surface 22, only the white LED 111 needs to be lit, and when light bulb color light is to be extracted, only the light bulb color LED 112 is lit. Further, by turning on the white LED 111 and the light bulb color LED 112 at the same time and adjusting the ratio of the amount of light of each color, it is possible to change the color tone of the light extracted from the emission surface 22.
　さらに、光源１は、光源制御手段により光量および色調の制御を行うことが可能となっている。 Furthermore, the light source 1 can control the light amount and the color tone by the light source control means.
　なお、本実施形態では、色調制御を行うための光源の構成として、列状に配置された白色と電球色のＬＥＤ（発光体）を使用しているが、使用する発光体の種類や色、配列についてはこれに限らず、目的に応じて種類や色、配列、個数を適宜決定すればよい。 In the present embodiment, white and bulb-colored LEDs (light emitters) arranged in a row are used as the configuration of the light source for color tone control, but the type and color of the light emitter to be used, The arrangement is not limited to this, and the type, color, arrangement, and number may be appropriately determined according to the purpose.
　（結合部反射部材について）
　光源１と導光体２との結合部近辺には、結合部反射部材４が設けられている。光源１から出射される光は拡がりをもっているため、放射角の大きい一部の光は入射面２１に入射されない。よって、入射面２１から外れてしまう光を反射により再度入射面２１に導き、光源１からの光の利用効率を向上できるように、結合部反射部材４が配置されている。 (About the connecting part reflection member)
A coupling portion reflecting member 4 is provided in the vicinity of the coupling portion between the light source 1 and the light guide 2. Since the light emitted from the light source 1 has a spread, some light having a large radiation angle is not incident on the incident surface 21. Therefore, the coupling portion reflecting member 4 is arranged so that light that is off the incident surface 21 is guided again to the incident surface 21 by reflection, and the utilization efficiency of the light from the light source 1 can be improved.
　（固定部材について）
　図１（Ａ）及び図１（Ｂ）に示すように、光源１と導光体２との結合部付近は、固定部材３によって挟まれる形で覆われているため、塵や埃の進入を防ぐことが可能となっている。 (About fixing members)
As shown in FIGS. 1 (A) and 1 (B), the vicinity of the coupling portion between the light source 1 and the light guide 2 is covered in a form sandwiched between the fixing members 3, so that dust and dust can enter. It is possible to prevent.
　固定部材３には光源１がねじ止めや接着テープ等の手段により固定されている。 The light source 1 is fixed to the fixing member 3 by means such as screwing or adhesive tape.
　図３は、固定部材３に対する導光体２の位置決め方法を示す図である。図３に示すように、固定部材３に位置決め用凸部３１が設けられており、導光体２に受け部２５が設けられており、固定部材３に対する導光体２の位置決めは、位置決め用凸部３１と受け部２５とを係合することで行われている。 FIG. 3 is a diagram illustrating a method of positioning the light guide 2 with respect to the fixing member 3. As shown in FIG. 3, a positioning convex portion 31 is provided on the fixed member 3, a receiving portion 25 is provided on the light guide 2, and the positioning of the light guide 2 with respect to the fixed member 3 is performed for positioning. This is done by engaging the convex portion 31 and the receiving portion 25.
　固定部材３には光源１が取り付けられているため、位置決め用凸部３１と受け部２５とを係合することで、光源１と導光体２の入射面２１との位置合わせを正確かつ容易に行うことが可能となっている。 Since the light source 1 is attached to the fixing member 3, the positioning projection 31 and the receiving portion 25 are engaged with each other so that the alignment between the light source 1 and the incident surface 21 of the light guide 2 can be accurately and easily performed. It is possible to do it.
　また、導光体２の受け部２５は、固定部材３に設けられた位置決め用凸部３１により係合されているため、固定部材３より導光体２が脱落することを防止する構造となっている。 In addition, since the receiving portion 25 of the light guide 2 is engaged by the positioning convex portion 31 provided on the fixing member 3, the light guide 2 is prevented from falling off the fixing member 3. ing.
　ここで、位置決め用凸部３１と、受け部２５とを係合させた状態において、位置決め用凸部３１と受け部２５との間には空隙を有していることが好ましい。これは、光源１から発生する熱や、環境温度の変化による導光体２の膨張や収縮が生じたとしても、導光体２に応力が加わることを防ぎ、導光体２の歪みや撓みを防止するためである。 Here, in a state where the positioning convex portion 31 and the receiving portion 25 are engaged with each other, it is preferable that there is a gap between the positioning convex portion 31 and the receiving portion 25. This prevents the light guide 2 from being stressed even if heat generated from the light source 1 or expansion or contraction of the light guide 2 due to changes in the environmental temperature occurs, and the light guide 2 is distorted or bent. It is for preventing.
　なお、本実施形態では、導光体２の受け部２５との係合手段として位置決め用凸部３１を用いているが、これに限らず、例えば図４のように、ねじ３２を用いるなど、導光体２の固定部材３からの脱落を防止可能な構成であればよい。 In the present embodiment, the positioning convex portion 31 is used as an engaging means with the receiving portion 25 of the light guide 2. However, the present invention is not limited to this, and for example, as shown in FIG. Any structure that can prevent the light guide 2 from falling off the fixing member 3 may be used.
　また、受け部２５の形状についても、本実施形態ではＵ字型としているが、位置決め用凸部３１やねじ３２等の位置決め構造に係合可能な形状であればこれに限らない。 The shape of the receiving portion 25 is also U-shaped in the present embodiment, but is not limited to this as long as it is a shape that can be engaged with a positioning structure such as the positioning convex portion 31 and the screw 32.
　また、位置決め用凸部３１と受け部２５との大きさ、形状、位置、個数については、照明モジュール１００の仕様により適宜設定されればよい。 Further, the size, shape, position, and number of the positioning convex portion 31 and the receiving portion 25 may be appropriately set according to the specifications of the illumination module 100.
　また、固定部材３の形状についてはデザイン性等を考慮して決定されればよい。固定部材３には光源１が固定されているため、点灯時に光源１から発生した熱を効率よく伝熱し、外部に放熱できるよう、固定部材３の材質としては、熱伝導率の高い金属材料とすることが好ましい。 Further, the shape of the fixing member 3 may be determined in consideration of design and the like. Since the light source 1 is fixed to the fixing member 3, the material of the fixing member 3 is a metal material having high thermal conductivity so that heat generated from the light source 1 can be efficiently transferred at the time of lighting and can be dissipated to the outside. It is preferable to do.
　（導光体の出射面について）
　本実施形態では、導光体２の出射面２２は、粗面となっており、出射面２２を通過した光を拡散して出射する機能を有している。粗面とは、平滑化する研磨処理が施されておらず、微小な凹凸が多数存在している状態であり、明暗の縞模様を生じさせない面である。 (About the exit surface of the light guide)
In the present embodiment, the exit surface 22 of the light guide 2 is a rough surface, and has a function of diffusing and exiting light that has passed through the exit surface 22. The rough surface is a surface that has not been subjected to a smoothing polishing process and has a large number of minute irregularities, and does not produce a bright and dark stripe pattern.
　図９は、導光体の形状と光量の強弱との関係を説明する図である。図９に示すように、板状の導光体２の厚さをt、入射面２１と出射面２２との間の距離をＬ、光源１の最大出射角度をθとした場合、
Ｌ≧ｔ／（２ｔａｎθ）
の条件を満たすと、入射面２１から入射した光が出射面２２に到達する際、出射面２２に対する角度に応じて光量の強弱が交互に発生する。これは、導光体２の内部において光が第１全反射面２３及び第２全反射面２４により全反射することが原因となっている。一方、従来の導光体では出射面となる端面を含む全ての端面が研磨されている。そのため、従来の導光体では、出射面に対する角度に応じた光量の強弱を有したまま、出射面から光が照射されることとなる。その結果、図５（Ａ）に示されるように、導光体の端面である出射面からの出射光を床面等の被照射面に照射した場合、明暗の縞模様が投影されてしまう。 FIG. 9 is a diagram illustrating the relationship between the shape of the light guide and the intensity of light. As shown in FIG. 9, when the thickness of the plate-shaped light guide 2 is t, the distance between the incident surface 21 and the emission surface 22 is L, and the maximum emission angle of the light source 1 is θ,
L ≧ t / (2 tan θ)
When the above condition is satisfied, when the light incident from the incident surface 21 reaches the output surface 22, the intensity of the light intensity is alternately generated according to the angle with respect to the output surface 22. This is because light is totally reflected by the first total reflection surface 23 and the second total reflection surface 24 inside the light guide 2. On the other hand, in the conventional light guide, all end surfaces including the end surface serving as the exit surface are polished. Therefore, in the conventional light guide, light is irradiated from the exit surface while maintaining the intensity of light according to the angle with respect to the exit surface. As a result, as shown in FIG. 5A, when the emitted light from the emission surface, which is the end face of the light guide, is irradiated to the irradiated surface such as the floor surface, a bright and dark stripe pattern is projected.
　しかしながら、本実施形態のように出射面２２を粗面として、出射面２２に光の拡散性を付与することによって、光量の強弱を抑えることが可能となる。その結果、図５（Ｂ）のように、床面等の照射面において、より均一な照度分布を得ることが可能となる。 However, the intensity of the light intensity can be suppressed by making the emission surface 22 rough as in the present embodiment and imparting light diffusibility to the emission surface 22. As a result, as shown in FIG. 5B, a more uniform illuminance distribution can be obtained on the irradiation surface such as the floor surface.
　ここで、出射面２２に光の拡散性を付与するために本実施形態では出射面２２を粗面としているが、出射面２２に光の拡散性を付与する手段はこれに限らず、例えば、研磨面である出射面２２に透光性を有する拡散シートを貼り付ける等、出射光を拡散させ、出射角度に応じた光量の強弱の発生を抑える方法であればこれに限らない。 Here, in order to impart light diffusibility to the exit surface 22, the exit surface 22 is a rough surface in this embodiment, but the means for imparting light diffusibility to the exit surface 22 is not limited to this, for example, The present invention is not limited to this as long as the emitted light is diffused and the intensity of the light quantity according to the emission angle is suppressed by, for example, attaching a translucent diffusion sheet to the emission surface 22 that is a polished surface.
　（出射面の形状）
　出射面２２は、入射面２１と平行であってもよいし、照射対象となる照射面の位置に応じて入射面２１に対して傾斜した状態であってもよい。 (Outgoing surface shape)
The exit surface 22 may be parallel to the entrance surface 21 or may be inclined with respect to the entrance surface 21 according to the position of the illumination surface to be irradiated.
　例えば、図６（Ａ）に示されるように、出射面２２の形状をテーパー型とすることで、出射面２２からの出射光の方向を変更することが可能である。これにより、任意の位置の照射面に照射することができる。また、上述したように出射面２２を粗面にすることで、任意の照射面に対して明暗の縞模様のない均一な照度分布を得ることが可能となる。 For example, as shown in FIG. 6A, the direction of outgoing light from the outgoing surface 22 can be changed by making the shape of the outgoing surface 22 tapered. Thereby, it can irradiate to the irradiation surface of arbitrary positions. Further, by making the exit surface 22 rough as described above, it is possible to obtain a uniform illuminance distribution having no bright and dark stripes on any irradiation surface.
　さらに、図６（Ｂ）のように、出射面２２の形状をテーパー型とし、テーパー型の出射面２２に拡散反射層５を設置した場合も、拡散反射層５での反射により出射光の方向を変更することが可能である。拡散反射層５の形成手段としては、出射面２２を粗面とし、出射面２２上に反射シートや反射塗料等を用いて反射層を形成すればよい。 Further, as shown in FIG. 6B, even when the shape of the emission surface 22 is tapered and the diffuse reflection layer 5 is installed on the tapered emission surface 22, the direction of the emitted light is reflected by the reflection at the diffuse reflection layer 5. It is possible to change. As a means for forming the diffuse reflection layer 5, the exit surface 22 may be a rough surface, and a reflective layer may be formed on the exit surface 22 using a reflective sheet, a reflective paint, or the like.
　また、出射面２２が研磨面の場合は、出射面２２上に拡散反射シートや拡散反射塗料等を用いて、出射面２２に光の拡散性を付与するとともに反射性をも付与する反射層を形成すればよい。 When the exit surface 22 is a polished surface, a diffused reflection sheet or a diffuse reflection paint is used on the exit surface 22 to provide a reflective layer that imparts light diffusibility to the exit surface 22 and also provides reflectivity. What is necessary is just to form.
　また、ここでは出射面２２の形状をテーパー型としているが、形状はこれに限らず、例えばＲ形状等、出射面２２からの出射光の方向を変更可能な構造であればよい。 In addition, although the shape of the emission surface 22 is a taper type here, the shape is not limited to this, and any shape may be used as long as the direction of the emitted light from the emission surface 22 can be changed.
　（照明装置）
　次に、本実施形態に係る照明モジュールを用いた照明装置について説明する。図７は、本実施形態に係る照明装置の一例を示す図である。 (Lighting device)
Next, a lighting device using the lighting module according to the present embodiment will be described. FIG. 7 is a diagram illustrating an example of a lighting device according to the present embodiment.
　図７に示される照明装置１０は、点灯部２０と、照明モジュール１００と、点灯部２０と照明モジュール１００とを連結するためのワイヤー３０とを含む。 7 includes a lighting unit 20, a lighting module 100, and a wire 30 for connecting the lighting unit 20 and the lighting module 100.
　点灯部２０は、光源１を発光させるための電力を供給するためのものであり、天上面に設置される。照明モジュール１００は、点灯部２０からワイヤー３０により吊り下げられている。ワイヤー３０の下端は、照明モジュール１００の固定部材３に連結されている。点灯部２０と光源１間の配線方法としては、吊り下げ用のワイヤー３０を配線として兼用しても良いし、点灯部２０と光源１とを繋ぐ配線をワイヤー３０とは別に配してもよい。 The lighting unit 20 is for supplying power for causing the light source 1 to emit light, and is installed on the top surface. The illumination module 100 is suspended from the lighting unit 20 by a wire 30. The lower end of the wire 30 is connected to the fixing member 3 of the illumination module 100. As a wiring method between the lighting unit 20 and the light source 1, the hanging wire 30 may be used as a wiring, or a wiring connecting the lighting unit 20 and the light source 1 may be arranged separately from the wire 30. .
　また、照明モジュール１００の仕様によっては、天井に直接固定してもよい。直接固定の場合は、天井に配置された点灯部２０と光源１とを配線によって接続すればよい。 Also, depending on the specifications of the lighting module 100, it may be fixed directly to the ceiling. In the case of direct fixing, the lighting unit 20 disposed on the ceiling and the light source 1 may be connected by wiring.
　出射面２２から出射された光の進行方向が床面に向かう方向とするために、図７に示すように照明モジュール１００を配置することで、床面や卓上において明暗の縞模様のない均一な照度分布を得ることが可能となる。 By arranging the illumination module 100 as shown in FIG. 7 so that the traveling direction of the light emitted from the emission surface 22 is directed toward the floor surface, the floor surface and the table are uniformly free of bright and dark stripes. An illuminance distribution can be obtained.
　＜実施形態２＞
　本発明の実施形態２に係る照明モジュールについて図８に基づいて説明する。図８は、本実施形態に係る照明モジュール２００の照射方向を示す図である。図８に示されるように、本実施形態に係る照明モジュール２００は、第１全反射面２３及び第２全反射面２４の少なくとも一方の面の一部に拡散パターンが施されており、当該面において導光体２の内部を進行している光の一部を出射させることができる点で実施形態１と異なる。 <Embodiment 2>
An illumination module according to Embodiment 2 of the present invention will be described with reference to FIG. FIG. 8 is a diagram illustrating an irradiation direction of the illumination module 200 according to the present embodiment. As shown in FIG. 8, in the illumination module 200 according to the present embodiment, a diffusion pattern is applied to a part of at least one of the first total reflection surface 23 and the second total reflection surface 24, and the surface 1 differs from the first embodiment in that a part of the light traveling inside the light guide 2 can be emitted.
　第１全反射面２３及び第２全反射面２４の少なくとも一方の面に施される拡散パターンは、拡散印刷、プリズム、マイクロレンズ等で形成される。これら拡散パターンにより、入射面２１から入射される光源１からの光の一部を、拡散パターンが形成された第１全反射面２３や第２全反射面２４から取り出すことができる。すなわち、入射面２１から入射された入射光は、全反射を繰り返して導光体２の内部を導光するが、第１全反射面２３及び第２全反射面２４の少なくとも一方の面の一部に施された拡散パターンに光が入射すると、入射光が拡散パターンにより拡散させることで全反射条件が崩れ、導光体２から光が取り出される。 The diffusion pattern applied to at least one of the first total reflection surface 23 and the second total reflection surface 24 is formed by diffusion printing, a prism, a microlens, or the like. With these diffusion patterns, a part of the light from the light source 1 incident from the incident surface 21 can be extracted from the first total reflection surface 23 and the second total reflection surface 24 on which the diffusion pattern is formed. That is, incident light incident from the incident surface 21 is repeatedly totally reflected to guide the inside of the light guide 2, but one of at least one of the first total reflection surface 23 and the second total reflection surface 24. When light is incident on the diffusion pattern applied to the part, the incident light is diffused by the diffusion pattern, so that the total reflection condition is broken and light is extracted from the light guide 2.
　上記構造によれば、図８に示すように、第１全反射面２３及び第２全反射面２４の少なくとも一方の面の一部に拡散パターンを施すことによって、出射面２２の他にも第１全反射面２３や第２全反射面２４の一部からも光を取り出すことが可能となるため、照射領域をより広域化することが可能となる。 According to the above structure, as shown in FIG. 8, by applying a diffusion pattern to a part of at least one of the first total reflection surface 23 and the second total reflection surface 24, in addition to the emission surface 22, Since light can be extracted also from a part of the first total reflection surface 23 and the second total reflection surface 24, the irradiation area can be made wider.
　ここで、導光体２の第１全反射面２３及び第２全反射面２４の少なくとも一方の面から光を取り出すために拡散性を付与する手段としては、上記拡散パターンを施す方法に限らず、例えば、透光性の材料の全体または表層付近に、拡散性を有する材料が混入された成型物を導光体２として用いても同様の効果を得ることができる。 Here, means for imparting diffusibility to extract light from at least one of the first total reflection surface 23 and the second total reflection surface 24 of the light guide 2 is not limited to the method of applying the diffusion pattern. For example, the same effect can be obtained even if a molded product in which a diffusive material is mixed in the entire light-transmitting material or in the vicinity of the surface layer is used as the light guide 2.
　また、出射面２２は粗面とすることで拡散性が付与されているため、出射角度に応じた光量の強弱の発生を抑えられ、照射面における明暗の縞模様の発生を防ぐことができるため、均一な照度分布を得ることが可能となっている。 Moreover, since the diffusing property is imparted by making the emission surface 22 rough, it is possible to suppress the intensity of light intensity depending on the emission angle and to prevent the occurrence of bright and dark stripes on the irradiated surface. It is possible to obtain a uniform illuminance distribution.
　以上のように、本発明の実施形態１・２に係る照明モジュール１００・２００は、（１）光源１と、（２）光源１からの光が入射する入射面２１と、入射面２１に隣接し、かつ互いに対向して、入射面２１から入射した光を全反射させる第１全反射面２３及び第２全反射面２４と、入射面２１に対向し、第１全反射面２３及び第２全反射面２４の間を全反射しながら進行した光を拡散させて出射する出射面２２とを有する導光体２と、を備える。そして、この照明モジュール１００・２００を各種電子機器に搭載して照明装置とすることで、明暗の縞模様のない照度分布で、かつ必要な部分を必要な光量で照射できる装置を実現することができる。なお、上記の実施形態１・２においては光源１をＬＥＤにより構成したが、これに限定されるものではなく、例えば有機ＥＬ等、導光体２に光を結合可能な光源であれば実現可能である。 As described above, the illumination modules 100 and 200 according to the first and second embodiments of the present invention include (1) the light source 1, (2) the incident surface 21 on which the light from the light source 1 is incident, and adjacent to the incident surface 21. And the first total reflection surface 23 and the second total reflection surface 24 that totally reflect the light incident from the incident surface 21, and the first total reflection surface 23 and the second total reflection surface 24 that face the incident surface 21. And a light guide body 2 having an emission surface 22 that diffuses and emits light that has traveled while being totally reflected between the total reflection surfaces 24. Then, by mounting the lighting modules 100 and 200 on various electronic devices to form a lighting device, it is possible to realize a device that can irradiate a necessary portion with a necessary light amount with an illuminance distribution without bright and dark stripes. it can. In the first and second embodiments, the light source 1 is configured by an LED. However, the present invention is not limited to this, and any light source capable of coupling light to the light guide 2 such as an organic EL can be realized. It is.
　本発明は、上述した各実施形態に限定されるものではなく、請求項に示した範囲で種々の変更が可能であり、本実施形態にそれぞれ開示された技術的手段を適宜組み合わせて得られる実施形態についても本発明の技術的範囲に含まれる。 The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and the embodiments can be obtained by appropriately combining the technical means disclosed in the embodiments. The form is also included in the technical scope of the present invention.
　本発明は、床面等を照射する照射装置に適用することが可能である。 The present invention can be applied to an irradiation apparatus that irradiates a floor surface or the like.
１　光源
２　導光体
３　固定部材
４　結合部反射部材
５　拡散反射層
１０　照明装置
２０　点灯部
２１　入射面
２２　出射面
２３　第１全反射面
２４　第２全反射面
１００・２００　照明モジュール DESCRIPTION OF SYMBOLS 1 Light source 2 Light guide 3 Fixing member 4 Coupling part reflection member 5 Diffuse reflection layer 10 Illumination device 20 Lighting part 21 Incident surface 22 Output surface 23 1st total reflection surface 24 2nd total reflection surface 100/200 Illumination module

Claims (6)

  1. 　光源と、
    　上記光源からの光が入射する入射面と、当該入射面に隣接し、かつ互いに対向して、上記入射面から入射した光を全反射させる第１全反射面及び第２全反射面と、上記入射面に対向し、上記第１全反射面及び第２全反射面の間を全反射しながら進行した光を拡散させて出射する出射面とを有する導光体と、を備えることを特徴とする照明モジュール。     A light source;
    An incident surface on which light from the light source is incident; a first total reflection surface and a second total reflection surface that are adjacent to the incident surface and face each other to totally reflect light incident from the incident surface; A light guide having an exit surface facing the entrance surface and having an exit surface that diffuses and emits light that travels while totally reflecting between the first total reflection surface and the second total reflection surface. Lighting module.
  2. 　上記出射面は、上記入射面と平行ではないことを特徴とする請求項１に記載の照明モジュール。 The illumination module according to claim 1, wherein the exit surface is not parallel to the entrance surface.
  3. 　上記出射面は粗面であることを特徴とする請求項１または２に記載の照明モジュール。 The illumination module according to claim 1 or 2, wherein the exit surface is a rough surface.
  4. 　上記出射面には、上記第１全反射面及び第２全反射面の間を全反射しながら進行した光を拡散させるとともに反射させる拡散反射層が形成されていることを特徴とする請求項１から３の何れか１項に記載の照明モジュール。 The diffused reflection layer for diffusing and reflecting the light that has traveled while totally reflecting between the first total reflection surface and the second total reflection surface is formed on the emission surface. 4. The illumination module according to any one of items 1 to 3.
  5. 　請求項１から４のいずれか１項に記載の照明モジュールと、
    　上記光源を点灯させる点灯手段と、を備えることを特徴とする照明装置。     The illumination module according to any one of claims 1 to 4,
    A lighting device comprising: lighting means for lighting the light source.
  6. 　上記出射面から出射された光の進行方向が床面に向かう方向となるように設置されることを特徴とする請求項５に記載の照明装置。
          The lighting device according to claim 5, wherein the lighting device is installed such that a traveling direction of light emitted from the emission surface is a direction toward the floor surface.
PCT/JP2012/083781 2012-02-29 2012-12-27 Lighting module and lighting device provided with same WO2013128771A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106662301A (en) * 2014-07-25 2017-05-10 明拓工业株式会社 Surface lighting body
JP2019123426A (en) * 2018-01-18 2019-07-25 ダイキョーニシカワ株式会社 Vehicular interior product

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5792874B1 (en) * 2014-06-24 2015-10-14 山佐株式会社 Panel lighting unit for gaming machines
JP6440670B2 (en) * 2015-12-24 2018-12-19 ミネベアミツミ株式会社 Surface lighting device
WO2018025927A1 (en) * 2016-08-03 2018-02-08 古河電気工業株式会社 Illumination apparatus, illumination apparatus attaching structure, method for extracting light from illumination apparatus, and optical connection method for illumination apparatus
JP6407458B1 (en) * 2018-02-07 2018-10-17 古河電気工業株式会社 LIGHTING DEVICE, LIGHTING DEVICE MOUNTING STRUCTURE, LIGHT EXTRACTION METHOD FROM LIGHTING DEVICE, AND LIGHT CONNECTION METHOD OF LIGHTING DEVICE
WO2020054628A1 (en) * 2018-09-14 2020-03-19 シャープ株式会社 Daylighting device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006139202A (en) * 2004-11-15 2006-06-01 Olympus Corp Optical pipe, illumination optical apparatus, and optical apparatus
JP2008166145A (en) * 2006-12-28 2008-07-17 Toyota Motor Corp Vehicular lighting fixture, and light-emitting diode bulb
JP2011233240A (en) * 2010-04-23 2011-11-17 Panasonic Electric Works Co Ltd Attachment structure of lighting device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006139202A (en) * 2004-11-15 2006-06-01 Olympus Corp Optical pipe, illumination optical apparatus, and optical apparatus
JP2008166145A (en) * 2006-12-28 2008-07-17 Toyota Motor Corp Vehicular lighting fixture, and light-emitting diode bulb
JP2011233240A (en) * 2010-04-23 2011-11-17 Panasonic Electric Works Co Ltd Attachment structure of lighting device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106662301A (en) * 2014-07-25 2017-05-10 明拓工业株式会社 Surface lighting body
JP2019123426A (en) * 2018-01-18 2019-07-25 ダイキョーニシカワ株式会社 Vehicular interior product

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