WO2012035841A1 - Led illumination device - Google Patents

Led illumination device Download PDF

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Publication number
WO2012035841A1
WO2012035841A1 PCT/JP2011/064303 JP2011064303W WO2012035841A1 WO 2012035841 A1 WO2012035841 A1 WO 2012035841A1 JP 2011064303 W JP2011064303 W JP 2011064303W WO 2012035841 A1 WO2012035841 A1 WO 2012035841A1
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Prior art keywords
led
lighting device
led lighting
diffusion material
light
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PCT/JP2011/064303
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French (fr)
Japanese (ja)
Inventor
洋治 椋田
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株式会社ブリンツテクノロジー
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Publication of WO2012035841A1 publication Critical patent/WO2012035841A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00—Globes; Bowls; Cover glasses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/02—Refractors for light sources of prismatic shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/232—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to an illuminating device (including an illuminator and an illuminating lamp) using a light emitting diode (hereinafter referred to as “LED”).
  • LED light emitting diode
  • the light emitted by the LED has a strong directivity and has the property of emitting light in a specific direction. If an angle representing a range in which the value is 1/2 or more with respect to the front luminance of the LED is called a radiation angle, the luminance is rapidly attenuated at an angle larger than the radiation angle. For this reason, if the LEDs are simply arranged side by side to emit light, the periphery of the LEDs becomes dim. As measures to solve this problem, methods such as tilting the direction of the mounted LED, reflecting the light emitted from the LED with a reflecting plate, diffusing with a diffusing plate, etc. are used.
  • Patent Document 1 Japanese Patent Laid-Open No. 10-282915
  • An object of the present invention is to provide a method for improving the above-described problems of the prior art and brightening the periphery of an LED with a simple configuration while avoiding a decrease in front luminance.
  • an LED illuminating device in which a light source is an LED, and along the optical axis direction of the LED at a location around the LED where a part of light emitted from the LED can enter.
  • a light source is an LED
  • an LED lighting device in which a diffusing material having a function of diffusing, scattering, or refracting light from the LED is disposed.
  • the following effects are realized by the configuration of the LED illumination device. 1. It becomes possible to illuminate the LED mounting surface, which could not be realized in the past, or the vicinity of the foot (installation location) of the LED with the light emitted by the LED itself. 2.
  • Light that is not diffused, scattered, or refracted by a diffusing material is a luminance characteristic that is inherent to LEDs.
  • the diffusion material may be arranged in parallel with the optical axis of the light emitted from the LED or with an angle to the optical axis.
  • the diffusion material may be disposed on the entire periphery or a part of the LED.
  • Both the inner surface and the outer surface of the diffusion material or either one of them may be flat or uneven.
  • the diffusion material may have a three-dimensional shape such as a round bar, a square bar, or a prismatic bar.
  • the diffusion material may be a material in which two or more bars such as round bars, square bars, or prismatic bars are connected in a plate shape or a sheet shape.
  • two or more LEDs are arranged concentrically on the central part and the outer periphery thereof, linearly, in a ring shape, or in a ring shape and concentrically in two or more rounds. You may be comprised so that it may arrange
  • FIG. 1A is a plan view showing an example of a lighting device of the present invention
  • FIG. 1B is a cross-sectional view
  • FIG. 2 is an explanatory diagram showing the progress of light in the illumination device of the present invention
  • FIGS. 3A to 3G are explanatory diagrams of examples of different shapes of the cylindrical diffusion material in the LED lighting device of the present invention.
  • 4 (a) and 4 (b) are explanatory views of different mounting examples of the LED lighting device of the present invention to the ceiling or wall surface.
  • FIG. 5 is an explanatory view of the appearance of an example of the LED lighting device of the present invention.
  • 6A is an explanatory view showing an example in which two or more LEDs are arranged in a row
  • FIGS. 7A to 7D are plan views of examples in which the inner and outer surfaces of the cylindrical diffusion material of the LED lighting device of the present invention have different shapes.
  • one LED is arranged at the center (center), and a plurality of LEDs are arranged at intervals on the outer periphery.
  • a cylindrical diffusion material 1 is concentrically arranged on the outer periphery and the outer periphery of the outer LED.
  • Each diffusion material 1 is arranged along the optical axis direction of the LED on the spread angle (emission angle) of the light emitted from the LED, and a part of the light emitted from the central LED is diffused on the outer diffusion material 1 ( 1a), a part of the light emitted from the outer LED can enter the outer diffusion material 1 (1b) and the inner diffusion material 1 (1a) from the vertical direction, and the incident light is diffused respectively.
  • the material 1 diffuses, scatters, or refracts (the traveling direction of light changes to the side). In this case, it is preferable to leave the diffusing material 1 in the open state in the optical axis direction ahead of the light emitted from the LED. Incidentally, when the diffusing material 1 is arranged ahead in the optical axis direction, the progress of light emitted from the LEDs is hindered. As shown in FIG. 1B, the LEDs are arranged on the wiring board B.
  • the angle L is smaller than the angle formed by the distance L and the height H point. If the angle is within the range, the light O1 emitted from the LED (FIG. 2) enters the diffusion material 1, diffuses, scatters, or refracts to the side and exits from the diffusion material 1 (emitted light O2). Irradiate the surrounding area (side).
  • O3 in FIG. 2 is light output from the LED and is not affected by the diffusion material 1.
  • the diffusing material 1 When the diffusing material 1 is arranged at an angle larger than the emission angle, a part of the light transmitted through the diffusing material 1 reduces the brightness, but does not pass through the diffusing material 1 and does not decrease the brightness. A part of the light transmitted through the diffusion material 1 is diffused, scattered, or refracted by the diffusion material 1 to illuminate a range of angles larger than the emission angle.
  • the material of the diffusion material for example, a semi-translucent and heat-resistant material such as tracing paper, shoji paper, and a translucent resin sheet is suitable. Of course, anything that has optical characteristics so that light is refracted and scattered may be used.
  • the diffusion material 1 may be colored. Tracing paper and shoji paper are more diffusible than thick paper.
  • the shape of the diffusion material 1 is not limited to a cylindrical shape, but a square cylindrical shape shown in FIG. 3A, a diamond-shaped cylindrical shape shown in FIG. 3B, a cylindrical shape shown in FIG.
  • the triangular shape shown in d), the streamlined cylindrical shape shown in FIG. 3 (e), the rectangular cylindrical shape shown in FIG. 3 (f), and other desired shapes can be obtained, as shown in FIG. 3 (g).
  • the diffusion material 1 can be formed into an uneven shape or a three-dimensional shape instead of a flat surface on either the inner surface or the outer surface, or either one of the inner surface and the outer surface in any of a cylindrical shape, a plate shape, a sheet shape, and the like.
  • the inner surface has triangular wavy irregularities
  • the inner and outer surfaces have wavy irregularities
  • the cylinders can be arranged in a ring shape into a cylindrical shape. It is also possible to form a three-dimensional shape in which prisms are arranged in a ring shape to form a cylinder.
  • the arrangement location of the diffusion material 1 may not be the same plane as the LED mounting position (surface), and the arrangement may not be parallel to the optical axis, but may have an angle with the optical axis. Moreover, you may arrange
  • the LED illuminating device (LED illuminating lamp) shown in FIG. 5 includes the base 2 on the base side, and the wiring board B, the LED, and the diffusion material 1 of the LED illuminating device in the heat radiating case 3 having an open end.
  • the tip of the LED and the diffusion material 1 is disposed on the opening 4 side of the tip of the case 3, and a dome-shaped cover 5 is put on the tip of the opening 4 and the LED and the diffusion material 1. is there.
  • the case 3 is preferably made of another material excellent in heat transfer, such as aluminum, which is excellent in heat dissipation and lightweight.
  • a fin 6 is provided on the outer periphery of the case 3 to enhance heat dissipation.
  • the base 2 is a base for an incandescent lamp, it can be used by being attached to a socket for the incandescent lamp.
  • the cover 5 may have other shapes.
  • the case 3 is built in (embedded in) the ceiling or the wall 7, and the LED and the cover 5 are mounted on the ceiling or the wall.
  • the power supply unit 8 can be connected to the LEDs in the case 3.
  • a hole 9 can be formed in the ceiling or wall 7, and an LED lighting device can be arranged in the hole 9 and attached to the ceiling or wall 7.
  • FIG. 6A is an example of the LED lighting device of the present invention, and is an explanatory diagram showing an example in which two or more LEDs are arranged in a row
  • FIG. 6B is a diagram illustrating two or more LEDs. It is explanatory drawing which shows the example arranged in the ring shape.
  • FIGS. 6A and 6B the same reference numerals are used for the same components as those shown in FIG.
  • the LED lighting device of the present invention can be used in various fields including indoor lighting and outdoor lighting, instead of existing incandescent bulbs and fluorescent lamps. According to the LED lighting device according to the above-described embodiment of the present invention, the following effects are realized. 1. It becomes possible to illuminate the LED mounting surface, which could not be realized in the past, or the vicinity of the foot (installation location) of the LED with the light emitted by the LED itself. 2. Light that is not diffused, scattered, or refracted by a diffusing material is a luminance characteristic that is inherent to LEDs. Therefore, by appropriately selecting the location where the diffusing material is installed, it is possible to minimize the change in luminance where lighting is required. Is possible. 3.

Abstract

Provided is an LED illumination device, the light source of which is an LED, and which is characterized in that a diffusion material having the function to diffuse, scatter or refract the light from the LED is disposed in the periphery of the LED along the optical axis direction of the LED on a location in which a portion of the light emitted from the LED can enter.

Description

ＬＥＤ照明装置LED lighting device
　本発明は発光ダイオード（以下「ＬＥＤ」と称する。）を用いた照明装置（照明具、照明灯等を含む）に関する。 The present invention relates to an illuminating device (including an illuminator and an illuminating lamp) using a light emitting diode (hereinafter referred to as “LED”).
　擬似白色ＬＥＤの出現と技術進歩に伴う発光効率の向上と共に、ＬＥＤを照明の光源に用いる事により、従来多用されてきた白熱電球に代表される光源よりもエネルギー効率を向上させると共に小型化や薄型化を行なうべく、ＬＥＤを用いた照明装置の製品化に向けた種々の試みがされてきた。 Along with the emergence of pseudo-white LEDs and the improvement in luminous efficiency accompanying technological advancement, the use of LEDs as light sources for illumination improves energy efficiency and reduces size and thickness compared to light sources typified by incandescent bulbs that have been widely used in the past. Various attempts have been made to commercialize lighting devices using LEDs.
　しかしながら、四方にほぼ均等な光を放射する白熱電球のような光源とは異なり、ＬＥＤの発する光には強い指向性があり、特定の方向に光を放射するという性質をもつ。ＬＥＤの正面輝度に対してその値が１／２以上である範囲を表す角度を放射角度と呼ぶことにすると、この放射角度よりも大きい角度では輝度は急激に減衰してしまう。このため、単にＬＥＤを並べて発光させただけではＬＥＤの周辺は薄暗くなってしまう。この問題を解消する方策として、実装するＬＥＤの向きを傾ける、ＬＥＤから放射された光を反射板で反射させる、拡散板で拡散させる等の方法が用いられているが、これらの手法は何れもＬＥＤの発する光に損失が生ずる、照明装置としてみると輝度が低下する、ＬＥＤ照明の製造や調整に工数が掛かる、等の問題を抱えている。又、特開平１０－２８２９１５号公報（以下、特許文献１と記す）のように、ＬＥＤを拡散材の粒子で被覆する構造もある。 However, unlike a light source such as an incandescent light bulb that emits almost uniform light in all directions, the light emitted by the LED has a strong directivity and has the property of emitting light in a specific direction. If an angle representing a range in which the value is 1/2 or more with respect to the front luminance of the LED is called a radiation angle, the luminance is rapidly attenuated at an angle larger than the radiation angle. For this reason, if the LEDs are simply arranged side by side to emit light, the periphery of the LEDs becomes dim. As measures to solve this problem, methods such as tilting the direction of the mounted LED, reflecting the light emitted from the LED with a reflecting plate, diffusing with a diffusing plate, etc. are used. There are problems such as loss of light emitted by the LED, lowering of brightness when viewed as a lighting device, and man-hours required for manufacture and adjustment of LED lighting. Further, there is a structure in which an LED is covered with particles of a diffusing material as disclosed in Japanese Patent Laid-Open No. 10-282915 (hereinafter referred to as Patent Document 1).
　本発明の課題は、上述の従来技術の問題を改善し、正面輝度の低下を避けつつ、簡潔な構成でＬＥＤの周辺を明るくする方法を提供することにある。 An object of the present invention is to provide a method for improving the above-described problems of the prior art and brightening the periphery of an LED with a simple configuration while avoiding a decrease in front luminance.
　本発明の一つの側面によれば、光源をＬＥＤとしたＬＥＤ照明装置であって、ＬＥＤの周囲であって、ＬＥＤから発する光の一部が入射可能な箇所に、ＬＥＤの光軸方向に沿って、ＬＥＤからの光を拡散、散乱、あるいは屈折させる機能をもつ拡散素材を配置したことを特徴とするＬＥＤ照明装置が提供される。
　上記ＬＥＤ照明装置の構成により次のような効果が実現される。
１．従来は実現できなかったＬＥＤ搭載面、あるいはＬＥＤの足元（設置場所）の周囲を、ＬＥＤ自らの発する光で照らすことが可能となる。
２．拡散素材で拡散、散乱あるいは屈折されない光は、ＬＥＤ本来の特性の輝度特性であるため、拡散素材の設置場所を適切に選択することにより、照明の必要な箇所の輝度変化を最小限度に留めることが可能となる。
　３．ＬＥＤ照明の製造や調整に工数を掛けることなく、容易且つ手軽に、ＬＥＤの周辺を明るく照明することが可能となる。しかも、ＬＥＤの発する光を低下させることなく、必要な場所での明るさ（輝度）を確保することができる。
　４．ＬＥＤ周辺のみならず、ＬＥＤから発する光で必要な場所の周囲のみを明るく照明することもできる。 According to one aspect of the present invention, there is an LED illuminating device in which a light source is an LED, and along the optical axis direction of the LED at a location around the LED where a part of light emitted from the LED can enter. Thus, an LED lighting device is provided, in which a diffusing material having a function of diffusing, scattering, or refracting light from the LED is disposed.
The following effects are realized by the configuration of the LED illumination device.
1. It becomes possible to illuminate the LED mounting surface, which could not be realized in the past, or the vicinity of the foot (installation location) of the LED with the light emitted by the LED itself.
2. Light that is not diffused, scattered, or refracted by a diffusing material is a luminance characteristic that is inherent to LEDs. Therefore, by appropriately selecting the location where the diffusing material is installed, it is possible to minimize the change in luminance where lighting is required. Is possible.
3. It is possible to easily and easily illuminate the periphery of the LED without man-hours for manufacturing and adjusting the LED illumination. In addition, it is possible to ensure brightness (luminance) at a necessary place without reducing the light emitted from the LED.
4). It is possible to illuminate not only the periphery of the LED but also the surroundings of the necessary place with light emitted from the LED.
　拡散素材は、ＬＥＤから発する光の光軸と平行に又はその光軸に角度を持たせて配置されていても良い。 The diffusion material may be arranged in parallel with the optical axis of the light emitted from the LED or with an angle to the optical axis.
　拡散素材は、ＬＥＤの周囲全体又は一部に配置されていても良い。 The diffusion material may be disposed on the entire periphery or a part of the LED.
　拡散素材の内面と外面の両方又はいずれか一方の面が平面状又は凹凸であっても良い。 Both the inner surface and the outer surface of the diffusion material or either one of them may be flat or uneven.
　拡散素材は、丸棒、角棒、またはプリズム状の棒のような立体形状であっても良い。 The diffusion material may have a three-dimensional shape such as a round bar, a square bar, or a prismatic bar.
　拡散素材は、丸棒、角棒、またはプリズム状の棒のような棒材が、板状又はシート状に二以上連結されたものであっても良い。 The diffusion material may be a material in which two or more bars such as round bars, square bars, or prismatic bars are connected in a plate shape or a sheet shape.
　ＬＥＤ照明装置は、二以上のＬＥＤが中心部とその外周に同心円状に、又は直線状に、又はリング状に、又はリング状に且つ同心円状に二周以上に配列され、拡散素材がそれらＬＥＤの外側に配置されるよう構成されていても良い。 In the LED lighting device, two or more LEDs are arranged concentrically on the central part and the outer periphery thereof, linearly, in a ring shape, or in a ring shape and concentrically in two or more rounds. You may be comprised so that it may arrange | position outside.
図１（ａ）は本発明の照明装置の一例を示す平面図、図１（ｂ）は断面図である。FIG. 1A is a plan view showing an example of a lighting device of the present invention, and FIG. 1B is a cross-sectional view. 図２は、本発明の照明装置における光の進行を表す説明図である。FIG. 2 is an explanatory diagram showing the progress of light in the illumination device of the present invention. 図３（ａ）から（ｇ）は、本発明のＬＥＤ照明装置における筒状の拡散素材の異なる形状の例の説明図である。FIGS. 3A to 3G are explanatory diagrams of examples of different shapes of the cylindrical diffusion material in the LED lighting device of the present invention. 図４（ａ）及び（ｂ）は、本発明のＬＥＤ照明装置の、天井や壁面への異なる取付け例の説明図である。4 (a) and 4 (b) are explanatory views of different mounting examples of the LED lighting device of the present invention to the ceiling or wall surface. 図５は、本発明のＬＥＤ照明装置の一例の外観説明図である。FIG. 5 is an explanatory view of the appearance of an example of the LED lighting device of the present invention. 図６は（ａ）は、本発明のＬＥＤ照明装置であって、２以上のＬＥＤを一列の配列した例を示す説明図であり、図６（ｂ）は２以上のＬＥＤをリング状に配列した例を示す説明図である。6A is an explanatory view showing an example in which two or more LEDs are arranged in a row, and FIG. 6B is an explanatory diagram showing two or more LEDs arranged in a ring shape. It is explanatory drawing which shows the done example. 図７（ａ）から（ｄ）は、本発明のＬＥＤ照明装置の筒状の拡散素材の内面、外面を異なる形状にした例の平面図である。FIGS. 7A to 7D are plan views of examples in which the inner and outer surfaces of the cylindrical diffusion material of the LED lighting device of the present invention have different shapes.
　本発明のＬＥＤ照明装置の一例を、図面を参照して以下に説明する。図１（ａ）、（ｂ）に示すＬＥＤ照明装置は、中央部（中心部）にＬＥＤが一つ配置され、その外周に複数個のＬＥＤが間隔を開けて配置され、中央部のＬＥＤの外周と、外側のＬＥＤの外周に円筒状の拡散素材１が同心円状に配置されたものである。夫々の拡散素材１はＬＥＤの発する光の拡がり角度（出射角度）上に、ＬＥＤの光軸方向に沿って配置して、中央部のＬＥＤの発する光の一部がその外側の拡散素材１（１ａ）に、外側のＬＥＤから発する光の一部がその外側の拡散素材１（１ｂ）と内側の拡散素材１（１ａ）に、夫々、垂直方向から入射可能とし、入射した光が夫々の拡散素材１で拡散、散乱或いは屈折する（光の進行方向が側方に変化する）ようにしてある。この場合、ＬＥＤから発する光の光軸方向先方には拡散素材１を配置することなく開口状態のままにしておくのがよい。ちなみに、光軸方向先方に拡散素材１を配置するとＬＥＤから発する光の進行が阻害される。なお、図１（ｂ）に示すように、ＬＥＤは、配線基板Ｂ上に配置される。 An example of the LED lighting device of the present invention will be described below with reference to the drawings. In the LED lighting device shown in FIGS. 1A and 1B, one LED is arranged at the center (center), and a plurality of LEDs are arranged at intervals on the outer periphery. A cylindrical diffusion material 1 is concentrically arranged on the outer periphery and the outer periphery of the outer LED. Each diffusion material 1 is arranged along the optical axis direction of the LED on the spread angle (emission angle) of the light emitted from the LED, and a part of the light emitted from the central LED is diffused on the outer diffusion material 1 ( 1a), a part of the light emitted from the outer LED can enter the outer diffusion material 1 (1b) and the inner diffusion material 1 (1a) from the vertical direction, and the incident light is diffused respectively. The material 1 diffuses, scatters, or refracts (the traveling direction of light changes to the side). In this case, it is preferable to leave the diffusing material 1 in the open state in the optical axis direction ahead of the light emitted from the LED. Incidentally, when the diffusing material 1 is arranged ahead in the optical axis direction, the progress of light emitted from the LEDs is hindered. As shown in FIG. 1B, the LEDs are arranged on the wiring board B.
　図２に示すように、点灯したＬＥＤの発光中心から離れた距離Ｌの位置に、高さＨの円筒状の拡散素材１を配置すると、距離Ｌと高さＨ点とがなす角度よりも小さい角度の範囲であれば、ＬＥＤより発した光Ｏ１（図２）が拡散素材１に入射して側方に拡散、散乱或いは屈折して拡散素材１からの出射し（出射光Ｏ２）、ＬＥＤの周囲（側方）を照射する。図２のＯ３はＬＥＤから出力された光で、拡散素材１の影響を受けない光である。 As shown in FIG. 2, when a cylindrical diffusion material 1 having a height H is arranged at a distance L away from the light emission center of the lit LED, the angle L is smaller than the angle formed by the distance L and the height H point. If the angle is within the range, the light O1 emitted from the LED (FIG. 2) enters the diffusion material 1, diffuses, scatters, or refracts to the side and exits from the diffusion material 1 (emitted light O2). Irradiate the surrounding area (side). O3 in FIG. 2 is light output from the LED and is not affected by the diffusion material 1.
　拡散素材１が上記出射角度よりも大きな角度に配置された場合は、拡散素材１を透過する光のうち一部の光は輝度を落としつつ、拡散素材１を透過せず輝度を落とさずに周囲を照らす光の周囲を照らし、拡散素材１を透過する光のうち一部の光は拡散素材１により拡散、散乱、あるいは屈折されて上記出射角度より大きな角度の範囲を照らすことができる。 When the diffusing material 1 is arranged at an angle larger than the emission angle, a part of the light transmitted through the diffusing material 1 reduces the brightness, but does not pass through the diffusing material 1 and does not decrease the brightness. A part of the light transmitted through the diffusion material 1 is diffused, scattered, or refracted by the diffusion material 1 to illuminate a range of angles larger than the emission angle.
拡散素材１の材料としては、例えば、半透光性であって、耐熱性のあるもの、例えば、トレーシングペーパー、障子紙、半透明の樹脂シート等が適する。勿論、光が屈折散乱するように光学特性を持たせた物であれば何でも良い。拡散素材１はカラーのものであってもよい。トレーシングペーパーや障子紙は肉厚のものの方が薄い者よりも拡散性が良い。 As the material of the diffusion material 1, for example, a semi-translucent and heat-resistant material such as tracing paper, shoji paper, and a translucent resin sheet is suitable. Of course, anything that has optical characteristics so that light is refracted and scattered may be used. The diffusion material 1 may be colored. Tracing paper and shoji paper are more diffusible than thick paper.
　拡散素材１の形状は円筒状に限らず、図３（ａ）に示す正方形の筒状、図３（ｂ）に示すダイヤ形の筒状、図３（ｃ）に示す円筒形、図３（ｄ）に示す三角形、図３（ｅ）に示す流線形の筒状、図３（ｆ）に示す長方形の筒状、その他所望形状にすることができ、また、図３（ｇ）に示すようにダイヤ形の筒を数本組み合わせたもの等、他の形状の筒を数本組み合わせたものとすることもできる。筒状以外の形状、例えば平板状、シート状とすることもできる。拡散素材１は、筒状、板状、シート状等のいずれの場合も内面と外面の両面、或いはいずれか一方の面を平面ではなく凹凸状とか立体状にすることができ、例えば図７（ａ）のように内面を三角波状の凹凸にしたり、図７（ｂ）のように内面及び外面を波状の凹凸にしたり、図７（ｃ）のように内面を弧状に凹凸にしたり、図７（ｄ）のように円柱をリング状に並べて筒状にした立体状にすることができる。角柱をリング状に並べて筒状にした立体状にすることもできる。 The shape of the diffusion material 1 is not limited to a cylindrical shape, but a square cylindrical shape shown in FIG. 3A, a diamond-shaped cylindrical shape shown in FIG. 3B, a cylindrical shape shown in FIG. The triangular shape shown in d), the streamlined cylindrical shape shown in FIG. 3 (e), the rectangular cylindrical shape shown in FIG. 3 (f), and other desired shapes can be obtained, as shown in FIG. 3 (g). It is also possible to combine several cylinders of other shapes such as a combination of several diamond-shaped cylinders. It can also be made into shapes other than a cylinder shape, for example, flat form, a sheet form. The diffusion material 1 can be formed into an uneven shape or a three-dimensional shape instead of a flat surface on either the inner surface or the outer surface, or either one of the inner surface and the outer surface in any of a cylindrical shape, a plate shape, a sheet shape, and the like. As shown in FIG. 7 (a), the inner surface has triangular wavy irregularities, the inner and outer surfaces have wavy irregularities, as shown in FIG. As shown in (d), the cylinders can be arranged in a ring shape into a cylindrical shape. It is also possible to form a three-dimensional shape in which prisms are arranged in a ring shape to form a cylinder.
　拡散素材１の配置場所は、ＬＥＤ搭載位置（面）と同一平面でなくともよく、配置も光軸と平行とせずに、光軸と角度を持たせても良い。また、ＬＥＤの周囲全面を囲んで配置するのではなく、周囲の一部分にのみ配置しても良い。いずれの場合も、ＬＥＤの足元近く（設置箇所の周囲）を照らす必要のある部分に、拡散素材１を設置する。 The arrangement location of the diffusion material 1 may not be the same plane as the LED mounting position (surface), and the arrangement may not be parallel to the optical axis, but may have an angle with the optical axis. Moreover, you may arrange | position not only surrounding the surroundings of LED but arrange | positioning only in a part of circumference | surroundings. In either case, the diffusion material 1 is installed in a portion that needs to illuminate near the foot of the LED (around the installation location).
　本発明のＬＥＤ照明装置の外観（デザイン）は所望とすることができるが、例えば、図５のようにすることもできる。図５に示すＬＥＤ照明装置（ＬＥＤ照明灯）は、根元側に口金２を備え、先端が開口している放熱性のケース３内に、ＬＥＤ照明装置の配線基板Ｂ、ＬＥＤ、拡散素材１を収容し、それらＬＥＤ及び拡散素材１の先端側をケース３の先端の開口部４側に配置し、開口部４の先方であってＬＥＤ及び拡散素材１の先方にドーム形状のカバー５を被せてある。ケース３は放熱性に優れ且つ軽量であるアルミ製等、伝熱性に優れた他の材質製とするのが望ましい。ケース３の外周にはフィン６を設けて放熱性を高めてある。口金２は、白熱電球用の口金にすると白熱電球用のソケットに取り付けて使用することができる。カバー５は他の形状であっても良い。 Although the appearance (design) of the LED lighting device of the present invention can be desired, for example, it can be as shown in FIG. The LED illuminating device (LED illuminating lamp) shown in FIG. 5 includes the base 2 on the base side, and the wiring board B, the LED, and the diffusion material 1 of the LED illuminating device in the heat radiating case 3 having an open end. The tip of the LED and the diffusion material 1 is disposed on the opening 4 side of the tip of the case 3, and a dome-shaped cover 5 is put on the tip of the opening 4 and the LED and the diffusion material 1. is there. The case 3 is preferably made of another material excellent in heat transfer, such as aluminum, which is excellent in heat dissipation and lightweight. A fin 6 is provided on the outer periphery of the case 3 to enhance heat dissipation. When the base 2 is a base for an incandescent lamp, it can be used by being attached to a socket for the incandescent lamp. The cover 5 may have other shapes.
　本発明のＬＥＤ照明具を天井や壁に取付けるには、例えば図４（ａ）に示すように、ケース３を天井や壁７に内蔵して（埋め込んで）、ＬＥＤ及びカバー５を天井や壁７の外に出し、ケース３内のＬＥＤに電源ユニット８を接続することができる。図４（ｂ）に示すように、天井や壁７に穴９を開け、その穴９内にＬＥＤ照明装置を配置して天井や壁７に取り付けることもできる。穴９を設けることにより通気性、放熱性を向上させることができる。なお、図６は（ａ）は、本発明のＬＥＤ照明装置の一例であって、２以上のＬＥＤを一列の配列した例を示す説明図であり、図６（ｂ）は２以上のＬＥＤをリング状に配列した例を示す説明図である。なお、図６（ａ）、（ｂ）において、図５等で表された構成要素と同等のものには、同等の符号が用いられている。 To attach the LED lighting device of the present invention to a ceiling or a wall, for example, as shown in FIG. 4A, the case 3 is built in (embedded in) the ceiling or the wall 7, and the LED and the cover 5 are mounted on the ceiling or the wall. The power supply unit 8 can be connected to the LEDs in the case 3. As shown in FIG. 4B, a hole 9 can be formed in the ceiling or wall 7, and an LED lighting device can be arranged in the hole 9 and attached to the ceiling or wall 7. By providing the hole 9, air permeability and heat dissipation can be improved. 6A is an example of the LED lighting device of the present invention, and is an explanatory diagram showing an example in which two or more LEDs are arranged in a row, and FIG. 6B is a diagram illustrating two or more LEDs. It is explanatory drawing which shows the example arranged in the ring shape. In FIGS. 6A and 6B, the same reference numerals are used for the same components as those shown in FIG.
　本発明のＬＥＤ照明具は、既存の白熱電球や蛍光灯に代えて、室内照明或いは屋外照明をはじめとして、あらゆる分野に利用することができる。
　上述の本発明の実施形態によるＬＥＤ照明装置によれば、次のような効果が実現される。
１．従来は実現できなかったＬＥＤ搭載面、あるいはＬＥＤの足元（設置場所）の周囲を、ＬＥＤ自らの発する光で照らすことが可能となる。
２．拡散素材で拡散、散乱あるいは屈折されない光は、ＬＥＤ本来の特性の輝度特性であるため、拡散素材の設置場所を適切に選択することにより、照明の必要な箇所の輝度変化を最小限度に留めることが可能となる。
　３．ＬＥＤ照明の製造や調整に工数を掛けることなく、容易且つ手軽に、ＬＥＤの周辺を明るく照明することが可能となる。しかも、ＬＥＤの発する光を低下させることなく、必要な場所での明るさ（輝度）を確保することができる。
　４．ＬＥＤ周辺のみならず、ＬＥＤから発する光で必要な場所の周囲のみを明るく照明することもできる。 The LED lighting device of the present invention can be used in various fields including indoor lighting and outdoor lighting, instead of existing incandescent bulbs and fluorescent lamps.
According to the LED lighting device according to the above-described embodiment of the present invention, the following effects are realized.
1. It becomes possible to illuminate the LED mounting surface, which could not be realized in the past, or the vicinity of the foot (installation location) of the LED with the light emitted by the LED itself.
2. Light that is not diffused, scattered, or refracted by a diffusing material is a luminance characteristic that is inherent to LEDs. Therefore, by appropriately selecting the location where the diffusing material is installed, it is possible to minimize the change in luminance where lighting is required. Is possible.
3. It is possible to easily and easily illuminate the periphery of the LED without man-hours for manufacturing and adjusting the LED illumination. In addition, it is possible to ensure brightness (luminance) at a necessary place without reducing the light emitted from the LED.
4). It is possible to illuminate not only the periphery of the LED but also the surroundings of the necessary place with light emitted from the LED.

Claims (7)

  1. 　光源をＬＥＤとしたＬＥＤ照明装置であって、
    　前記ＬＥＤの周囲であって、前記ＬＥＤから発する光の一部が入射可能な箇所に、ＬＥＤの光軸方向に沿って、ＬＥＤからの光を拡散、散乱、あるいは屈折させる機能をもつ拡散素材を配置したことを特徴とするＬＥＤ照明装置。     An LED lighting device using a light source as an LED,
    A diffusion material having a function of diffusing, scattering, or refracting light from the LED along the optical axis direction of the LED around the LED, where a part of the light emitted from the LED can enter. An LED lighting device characterized by being arranged.
  2. 　請求項１に記載のＬＥＤ照明装置において、
    　前記拡散素材が、ＬＥＤから発する光の光軸と平行に又はその光軸に角度を持たせて配置されたことを特徴とするＬＥＤ照明装置。     The LED lighting device according to claim 1,
    The LED illuminating device, wherein the diffusion material is arranged in parallel to an optical axis of light emitted from the LED or at an angle to the optical axis.
  3. 　請求項１又は請求項２に記載のＬＥＤ照明装置において、
    　前記拡散素材が、ＬＥＤの周囲全体又は一部に配置されたことを特徴とするＬＥＤ照明装置。     The LED lighting device according to claim 1 or 2,
    The LED illuminating device, wherein the diffusing material is disposed on the entire periphery or a part of the LED.
  4. 　請求項１から３のいずれか一項に記載のＬＥＤ照明装置において、
    　前記拡散素材の内面と外面の両方又はいずれか一方の面が平面状又は凹凸であることを特徴とするＬＥＤ照明装置。     In the LED lighting device according to any one of claims 1 to 3,
    An LED lighting device characterized in that both or either one of the inner surface and the outer surface of the diffusion material is planar or uneven.
  5. 　請求項１から３のいずれか一項に記載のＬＥＤ照明装置において、
    　前記拡散素材が、丸棒、角棒、またはプリズム状の棒のような立体形状であることを特徴とするＬＥＤ照明装置。     In the LED lighting device according to any one of claims 1 to 3,
    The LED illuminating device, wherein the diffusion material has a three-dimensional shape such as a round bar, a square bar, or a prismatic bar.
  6. 請求項１から３のいずれか一項に記載のＬＥＤ照明装置において、
    　前記拡散素材が、丸棒、角棒、またはプリズム状の棒のような棒材が、板状又はシート状に二以上連結されたものであることを特徴とするＬＥＤ照明装置。     In the LED lighting device according to any one of claims 1 to 3,
    2. The LED lighting device according to claim 1, wherein the diffusion material is formed by connecting two or more rods such as round bars, square bars, or prismatic bars in a plate shape or a sheet shape.
  7. 　請求項１から６のいずれか一項に記載のＬＥＤ照明装置において、二以上のＬＥＤが中心部とその外周に同心円状に、又は直線状に、又はリング状に、又はリング状に且つ同心円状に二周以上に配列され、前記拡散素材がそれらＬＥＤの外側に配置されたことを特徴とするＬＥＤ照明装置。 The LED lighting device according to any one of claims 1 to 6, wherein two or more LEDs are formed concentrically, linearly, in a ring shape, or in a ring shape and a concentric shape in a central portion and an outer periphery thereof. The LED lighting device is characterized in that the diffusion material is arranged on the outside of the LEDs.
PCT/JP2011/064303 2010-09-16 2011-06-22 Led illumination device WO2012035841A1 (en)

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JP2016540345A (en) * 2013-11-11 2016-12-22 フィリップス ライティング ホールディング ビー ヴィ lighting equipment
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