JP2012009280A - Led illumination fixture - Google Patents

Led illumination fixture Download PDF

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JP2012009280A
JP2012009280A JP2010144308A JP2010144308A JP2012009280A JP 2012009280 A JP2012009280 A JP 2012009280A JP 2010144308 A JP2010144308 A JP 2010144308A JP 2010144308 A JP2010144308 A JP 2010144308A JP 2012009280 A JP2012009280 A JP 2012009280A
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led
parabolic reflecting
parabolic
reflecting surface
reflecting faces
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JP5612380B2 (en )
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Nobuyuki Baba
Tadahiro Kamio
忠宏 神尾
伸之 馬場
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Eye Lighting Syst Corp
株式会社アイ・ライティング・システム
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00Reflectors for light sources
    • F21V7/04Optical design
    • F21V7/06Optical design with parabolic curvature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00Reflectors for light sources
    • F21V7/0083Array of reflectors for a cluster of light sources, e.g. arrangement of multiple light sources in one plane
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00Reflectors for light sources
    • F21V7/10Construction
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • F21S2/005Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction of modular construction
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/14Adjustable mountings
    • F21V21/30Pivoted housings or frames
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21WINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10Outdoor lighting
    • F21W2131/105Outdoor lighting of arenas or the like
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21WINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10Outdoor lighting
    • F21W2131/107Outdoor lighting of the exterior of buildings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING 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
    • F21Y2103/00Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING 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
    • F21Y2105/00Planar light sources
    • F21Y2105/10Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING 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
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

Abstract

PROBLEM TO BE SOLVED: To provide an LED illumination fixture capable of illuminating a distant object with sufficient brightness.SOLUTION: The LED illumination fixture is equipped with a plurality of LEDs 9 and a reflecting unit 5 that has parabolic reflecting faces 11 in which a starting end opening 33 to face the LEDs 9 is installed at the bottom part. As for respective parabolic reflecting faces 11, an axial length from the bottom part up to a terminal opening 35 in which the LEDs 9 are arranged is made a length enough to obtain super-narrow angle light distribution. While the diameter of the terminal opening 35 is made 5 to 7° for a 1/2 beam angle, the respective parabolic reflecting faces 11 are installed mutually in parallel. The LEDs 9 and the parabolic reflecting faces 11 are respectively arranged at a pitch P wherein light radiated from the respective parabolic reflecting faces 11 are superimposed in an irradiation field with a prescribed distance away. Reflecting films are formed on respective split parabolic reflecting faces composed by mutually splitting the parabolic reflecting faces 11 in the same shape along a major axis to integrally constitute the parabolic reflecting faces 11 by combining the respective split parabolic reflection faces.

Description

本発明は、LEDを光源に備えるLED照明器具に係り、特に、遠方の対象物を十分な明るさで演出照明する投光器として用いて好適なLED照明器具に関する。 The present invention relates to a LED lighting apparatus comprising LED light source, in particular, it relates to suitable LED lighting fixture using a projector to direct illuminating a distant object with sufficient brightness.

建物等の演出照明に供される照明器具では、その光源に高出力化が容易なHID(High Intensity Discharge)ランプが広く用いられている。 In the lighting fixture is subjected to the effect lighting such as buildings, high output easy HID (High Intensity Discharge) lamps are widely used in the light source. 近年では、高寿命化、灯具の小型、軽量化が可能なLEDが光源として注目され、また、照明器具として実用化されている。 In recent years, long-life, small lamp, which can be lightweight LED is attracting attention as a light source, has also been put to practical use as a luminaire.
すなわち、HIDランプを光源とする照明器具においては、配光制御を反射鏡で行っており、器具効率を高めるためにHIDランプの放射光を可能な限り反射する大きさの反射鏡を用いる必要があるから器具が大型、重量化する。 That is, in the lighting fixture for a HID lamp as a light source is subjected to the light distribution control by the reflecting mirror, it is necessary to use the size of the reflecting mirror for reflecting as much as possible radiation of the HID lamp in order to increase the instrument efficiency instrument large and heavier because there. これに対し、LEDを光源とする照明器具においては、LEDが、その放射面から光を放射する構造であることから当該放射面にレンズを配して配光制御する構成が一般的である。 In contrast, in the lighting apparatus having an LED as a light source, LED has the structure that the light distribution control by arranging the lens on the emitting surface because the light from the emitting surface is a structure in which radiation is common. この構成によれば、LEDの放射光の全てを小型・軽量のレンズで制御することができることから、器具の小型、軽量化が可能になる(例えば、特許文献1参照)。 According to this configuration, all the LED of the radiation because it can be controlled by the size and weight of the lens, allowing a small instrument, weight reduction (e.g., see Patent Document 1).

特開2006−128217号公報 JP 2006-128217 JP

しかしながら、照射対象物が数十〜百数十メートル以上離れた遠方にある場合、照射対象物を十分な明るさで照らすためには、非常に高出力なLEDを光源に採用する必要がある。 However, if the irradiation target object is in a far away several tens to hundred and several tens meters or more, in order to illuminate the illuminated object with sufficient brightness, it is necessary to employ a very high output LED light source. また、従来のように、配光制御にレンズを使用した場合、照射面に色収差が発生する。 Also, as in the prior art, when using a lens to the light distribution control, chromatic aberration is generated in the irradiated surface.
この問題を解決するに、配光制御に反射鏡を用いることが考え得るが、反射鏡を単純に用いた場合、レンズに比べて光源の放射光の全てを制御できないため軸光度が低下し、遠方で所望の明るさが確保できない。 To resolve this problem, but may considered to use a reflector to a light distribution control, when simply using a reflective mirror, the axis luminous intensity decreases because it can not control all of the emitted light of the light source as compared with the lens, desired brightness can not be secured in the distance. HIDランプを光源に採用した従来の照明器具では、当該HIDランプ自体が比較的大きいため、反射鏡で反射仕切れない光に起因した軸光度不足が顕著になるものの、HIDランプを高出力化し光軸上の光束を増やすことで軸光度不足を補っていた。 In the conventional lighting fixture employing a HID lamp as a light source, for the HID lamp itself is relatively large, although the axial luminous intensity insufficient due to light not Shikire reflected by the reflecting mirror becomes remarkable, and high output of the HID lamp optical axis to increase the light flux of the above had to compensate for the axial luminous intensity insufficient. しかしながら、LEDにおいては、出力を高めたとしてもHIDランプ程の光束増加は望めないため、そのままでは所望の軸光度が得られない。 However, in the LED, since not be expected luminous flux increased as the HID lamp even enhanced output, not directly to obtain desired axial luminosity.

本発明は、上述した事情に鑑みてなされたものであり、遠方の対象物を十分な明るさで照明することができるLED照明器具を提供することを目的とする。 The present invention has been made in view of the above circumstances, and an object thereof is to provide an LED lighting apparatus capable of illuminating a distant object with sufficient brightness.

上記目的を達成するために、本発明は、複数のLEDと、前記LEDを臨ませる始端開口を底部に設けた放物反射面を前記LEDごとに有する反射ユニットとを備え、前記放物反射面のそれぞれを、前記LEDが配される底部から終端開口までの軸長を超狭角配光が得られる長さとし、前記終端開口の径を1/2ビーム角が5〜7度となる径としつつ、それぞれの前記放物反射面を互いに平行に設け、所定距離離れた照射野で前記放物反射面のそれぞれから放射した光が重なるピッチで前記LED及び放物反射面のそれぞれを配置するとともに、前記放物反射面を長軸に沿って互いに同一形状に分割して成る分割放物反射面のそれぞれに反射膜を形成し、それぞれの分割放物反射面を合わせて前記放物反射面を構成したことを特徴とするLE To achieve the above object, the present invention comprises a plurality of LED, and a reflection unit having a parabolic reflective surface having a starting end opening at the bottom for exposing the LED for each of the LED, the parabolic reflecting surface respectively, the LED is an axial length from the bottom to the end opening is very narrow angle light distribution is obtained which is arranged long Satoshi, and diameter of the diameter of said end opening is 1/2 beam angle becomes 5-7 degrees while, provided each of the parabolic reflecting surfaces in parallel with each other, thereby placing each of the LED and the parabolic reflecting surface at a pitch of light overlap radiated from each of the parabolic reflecting surface at a predetermined distance away irradiation field the reflective film forming the parabolic reflecting surface to each of the divided parabolic reflecting surface formed by dividing the same shape along the longitudinal axis, said parabolic reflecting surface together each of the divided parabolic reflecting surface LE, characterized in that configuration the 照明器具を提供する。 To provide a lighting fixture.

また本発明は、上記LED照明器具において、前記LED及び前記放物反射面を納める熱伝導性材から成る灯体ケースを備え、当該灯体ケースの正面から前記放物反射面の終端開口側を突出させ、当該突出させた部位を樹脂製の透明な前面カバーで覆ったことを特徴とする。 The present invention, in the LED lighting apparatus includes a lamp body case made of thermally conductive material to pay the LED and the parabolic reflecting surface, the end opening side of the parabolic reflecting surface from the front of the lamp body case is projected, characterized in that covering the site is the projection of the resin in the transparent front cover.

本発明によれば、LEDが配される底部から終端開口までの軸長を超狭角配光が得られる長さとし、終端開口の径を1/2ビーム角が5〜7度となる径としたことから、従来のものよりも平行光線が放物反射面の長軸に集められ軸光度を向上させることができる。 According to the present invention, LED is an axial length from the bottom to the end opening is very narrow angle light distribution is obtained which is arranged long Satoshi, a diameter of the diameter of the end opening is 1/2 beam angle becomes 5-7 degrees since the can parallel light than the conventional improves the axial luminous intensity collected in the long axis of the parabolic reflective surface. さらに、遠方での照射野の拡がりが抑えられ十分な照度を維持することができる。 Furthermore, it is possible to spread the radiation field in the far to maintain sufficient illuminance suppressed.
また、かかる放物反射面は、長さが通常よりも非常に長くなることから均一な反射面の形成が困難となるが、本発明では、当該放物反射面を長軸に沿って互いに同一形状に分割して成る分割放物反射面のそれぞれに反射膜を形成し、それぞれの分割放物反射面を合わせて放物反射面を構成するため、均一な放物反射面を簡単に形成することができる。 Further, according parabolic reflective surface is formed of a uniform reflecting surface since the length becomes much longer than normal is difficult, in the present invention, together the parabolic reflective surface along the long axis same the reflective film is formed on each formed by dividing divided parabolic reflecting surface shape, for forming the parabolic reflecting surface together each of the divided parabolic reflecting surface, to easily form a uniform parabolic reflective surface be able to.

本発明の第1実施形態に係るLED照明器具の外観構成を示す斜視図である。 Is a perspective view showing an external configuration of the LED lighting apparatus according to a first embodiment of the present invention. LED照明器具の構成を示す図であり、(A)は正面図、図2は(A)のI−I線における断面視図である。 Is a diagram showing a configuration of an LED lighting fixture is a cross section view along line I-I of (A) is a front view, FIG. 2 (A). LEDユニットの構成を示す図であり、(A)はLEDユニットの平面図、(B)はLEDユニットが備えるLEDを拡大して示す図、(C)は当該LEDの別例を拡大して示す図である。 Is a diagram showing a configuration of the LED unit, shown enlarged diagram, another example of (C) is the LED showing the enlarged LED included in (A) is a plan view of the LED units, (B) the LED unit it is a diagram. 反射ユニットの構成を示す図であり、(A)は正面図、(B)は平面図、(C)は側面図である。 Is a diagram showing the structure of a reflection unit, (A) is a front view, (B) is a plan view, (C) is a side view. 分割放物反射面の平面図である。 It is a plan view of a split parabolic reflecting surface. 本発明の第2実施形態に係るLED照明器具の外観構成を示す斜視図である。 Is a perspective view showing an external configuration of the LED lighting apparatus according to a second embodiment of the present invention. LED照明器具の正面図である。 It is a front view of the LED lighting apparatus. LED照明器具の側面図である。 It is a side view of the LED lighting apparatus. LED照明器具を背面側からみた斜視図である。 The LED lighting fixture is a perspective view from the rear side. 本発明の変形例に係る放物反射面の配置例を示す図であり、(A)は多列配置、(B)は同心円状配置を示す。 Is a diagram showing an example of the arrangement of the parabolic reflective surface according to a modification of the present invention, (A) is multi-row arrangement, (B) shows a concentric arrangement.

以下、図面を参照して本発明の実施形態について説明する。 Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described.
<第1実施形態> <First Embodiment>
図1は、本実施形態に係るLED照明器具1の外観構成を示す斜視図である。 Figure 1 is a perspective view showing an external configuration of the LED lighting apparatus 1 according to this embodiment. また、図2はLED照明器具1の構成を示す図であり、図2(A)は正面図、図2(B)は図2(A)のI−I線における断面視図である。 Also, FIG. 2 is a diagram showing a configuration of the LED lighting apparatus 1, 2 (A) is a front view, cross-sectional view showing the I-I line in FIG. 2 (B) 2 (A).
LED照明器具1は、数十メートル〜百数十メートル離れた遠方の対象物のライトアップに用いて好適な器具(投光器)であり、図1及び図2に示すように、LEDユニット3(図2)と、反射ユニット5と、これらを納めた灯体ケース7とを備えている。 LED lighting apparatus 1 is suitable instruments used to light up a few tens of meters to a hundred several tens of meters away distant object (emitter), as shown in FIGS. 1 and 2, LED units 3 (Fig. and 2), and a reflection unit 5, and a light body case 7 which dedicated them. LEDユニット3は、複数個(図示例では5個)のLED9を一列に配列して構成されている。 LED unit 3, which are arranged to LED9 a plurality (five in the illustrated example) in a row. また、反射ユニット5には、それぞれのLED9に対応して放物反射面11が設けられている。 Further, the reflecting unit 5, the parabolic reflecting surface 11 corresponds provided in the respective LED 9. そして各放物反射面11でLED9の放射光が平行光化されて出射される。 The radiation in each parabolic reflecting surface 11 LED 9 is emitted is collimated.
以下、各部をより詳細に説明する。 Hereinafter, each part will be described in more detail.

図3はLEDユニット3の構成を示す図であり、図3(A)はLEDユニット3の平面図、図3(B)はLEDユニット3が備えるLED9を拡大して示す図、図3(C)は当該LED9の別例を拡大して示す図である。 Figure 3 is a diagram showing a configuration of the LED unit 3, 3 (A) is a plan view of the LED unit 3, FIG. 3 (B) shows an enlarged LED9 provided in the LED unit 3, FIG. 3 (C ) is an enlarged view showing another example of the LED 9.
LEDユニット3は、同図に示すように、横長に延びる一枚の回路基板13に、5個のLED9を一定のピッチP(後に詳述)で一列に配置して構成され、当該回路基板13の裏面側には各LED9の点灯回路が実装されている。 LED unit 3, as shown in the figure, one circuit board 13 which extends horizontally, is constituted by five LED9 arranged in a row at a constant pitch P (described in detail later), the circuit board 13 back side to side each LED9 lighting circuit is mounted in. 本実施形態では、約20W(ワット)の出力のLED9を5個用いることで約100W(ワット)の出力のLEDユニット3を構成している。 In the present embodiment, constitutes a LED unit 3 of the output of about 20W to about the LED9 the output (watts) by using five 100W (watts).

LED9は、図3(B)に示すように、複数個(図示例では4個)のLED素子(LEDチップ)15を1つにパッケージ化して構成されている。 LED9, as shown in FIG. 3 (B), and is configured to package the LED element (LED chip) 15 a plurality of (four in the illustrated example) into one. すなわち、LED9は、平面視略正方形のパッケージ基板17を備え、このパッケージ基板17の上面17Aに、平面視略円形のリフレクタ19を凹設し、このリフレクタ19の中心部Oに複数のLED素子15を配置し、パッケージ基板17の周囲に設けた正負の電極21、23から各LED素子15に電力を供給し点灯する。 That, LED 9 is provided with a package substrate 17 of the plan view square, the top surface 17A of the package substrate 17, and recessed to a generally circular plan view of the reflector 19, a plurality of center O of the reflector 19 LED element 15 was placed, it turned to supply power to each LED element 15 from the positive and negative electrodes 21 and 23 provided around the package substrate 17. また、リフレクタ19には、各LED素子15を一同に覆う封入樹脂25が充填されている。 Further, the reflector 19, the encapsulating resin 25 is filled to cover the LED elements 15 to Everyone. 上記LED素子15は、それぞれ略中央に発光点Xを有し、これらのLED素子15が格子状に互いに密接配置されることで、これらLED素子15を取り囲む大きさを有した1つの発光点Qとして光学設計上取り扱われる。 The LED element 15 has a light emitting point X at the center substantially respectively, that these LED elements 15 are closely disposed to each other in a lattice, one light emitting point Q having a size that surrounds the LED elements 15 It is handled on the optical design as.
このとき、図3(B)の例では、発光点Qの中心部OにLED素子15の発光点Xが無いことから、これらを1つの発光点Qとして光学設計した際に、照射野の輪郭が不鮮明になり、また、中心部Oが光軸となるので軸光度も低下する。 In this case, in the example of FIG. 3 (B), the since the light emitting point X of the LED element 15 in the center O of the light emitting point Q is not, upon the optical design them as a single light emitting point Q, the contour of the irradiation field is unclear, also, the center O is also axial luminous intensity decreases because the optical axis. そこで、図3(C)の例に示すように、リフレクタ19の中心部OにLED素子15の発光点Xを配し、このLED素子15の周囲に他のLED素子15を配して発光点Qを構成したLED9Aとすることで照射野の輪郭が鮮明になり、また、軸光度の向上も得られる。 Therefore, as shown in the example of FIG. 3 (C), the arranged light-emitting point X of the LED element 15 in the center O of the reflector 19, emission points arranged other LED elements 15 around the LED element 15 contour of the irradiation field by the LED9A configuring the Q becomes clear, also, improvement of the axial luminous intensity is also obtained.

ただし、発光点Qが大きくなると点光源として取り扱えなくなる。 However, the light emitting point Q is not handled as larger the point light source. したがって、後述する放物反射面11に対して発光点Qが光学設計上点光源と見なせる程度の大きさに収まるように、LED素子15をダウンサイズし、或いは、個数を減らすことが望ましい。 Therefore, to fit in a size that the light emitting point Q can be regarded as the upper point light source optical design with respect to the parabolic reflecting surface 11 to be described later, the LED element 15 down size, or, it is desirable to reduce the number. しかしながら、LED素子15を小型化し、或いは、個数を減らすと、これらをパッケージ化したLED9の高出力化が難しくなる。 However, the LED element 15 is downsized, or reducing the number, higher output of the LED9 they were packaged difficult. このため、数十メートル〜百数十メートルという遠方を十分に照らす光源としては出力が不足することとなる。 Therefore, so that the insufficient output as the light source to illuminate the distant of several tens of meters to a hundred several tens of meters sufficiently. また、発光点Qが大きくても高出力なLED9を採用すると、上述のように、照射野の輪郭が不鮮明になる。 Also, when the even greater emission point Q to adopt high-output LED 9, as described above, the contour of the irradiation field becomes unclear. 換言すれば、配光制御の精度の低下により器具効率も低下することから、遠方を十分に照らすためには、LED9の出力を無駄に高める必要がある。 In other words, since the drops appliance efficiency decrease of the light distribution control accuracy, to illuminate the distant enough, it is necessary to increase the waste output of the LED 9.

この問題は、放物反射面11を発光点Qが点光源と見なせる程度まで大きくすれば解決できる。 This problem can be solved by increasing the parabolic reflective surface 11 to the extent that the light emitting point Q can be regarded as a point light source. しかしながら、放物反射面11が非常に大きくなり、器具の大型・重量化を招き、光源にLED9を採用したメリットが損なわれる。 However, parabolic reflecting surface 11 becomes very large, leading to large-weight of the instrument, merit is impaired adopting LED9 light source. 特に、本実施形態においては、後述するように放物反射面11の軸長が長いため、器具の大型化が顕著となる。 Particularly, in the present embodiment, since the axial length of the parabolic reflective surface 11 is long as described below, an increase in the size of the instrument becomes prominent.
そこで本実施形態では、1個のLED9で光源を構成するのではなく、複数(本実施形態では5個)のLED9を用いて1個のLEDユニット3を構成している。 Therefore, in this embodiment, instead of constituting the light source with one LED9, constitute a single LED unit 3 using LED9 plurality (five in this embodiment). この構成によれば、個々のLED9の出力を低くできるので、発光点Qを小さくでき、より正確な配光制御が実現できるとともに放物反射面11の大型化を招くことがない。 According to this configuration, since the output of each LED9 can be lowered, the light emitting point Q can be reduced, a more accurate light distribution control is prevented from increasing the size of the parabolic reflecting surface 11 with can be realized.

図4は反射ユニット5の構成を示す図であり、図4(A)はその正面図、図4(B)はその平面図、図4(C)はその側面図である。 Figure 4 is a diagram showing a configuration of a reflection unit 5, FIG. 4 (A) a front view, FIG. 4 (B) a plan view, FIG. 4 (C) is a side view thereof.
反射ユニット5は、ユニット本体30に、LED9のピッチPに合わせて放物反射面11が横並びに設けて構成されている。 Reflecting unit 5, the unit body 30, parabolic reflecting surface 11 to match the pitch P of LED9 are formed by providing the side-by-side. このユニット本体30は、図4(B)に示すように、側面視形状が上記放物反射面11に沿った略放物線形状を成し、図2(B)に示すように、ユニット本体30の底部31がLEDユニット3の回路基板13上に位置するように灯体ケース7に支持される。 The unit main body 30, as shown in FIG. 4 (B), a substantially parabolic shape in side view shape is along the parabolic reflective surface 11, as shown in FIG. 2 (B), the unit main body 30 bottom 31 is supported on the lamp body case 7 so as to be located on the circuit board 13 of the LED unit 3. また、反射ユニット5は、図4に示すように、それぞれの放物反射面11の長軸Kを通る面で互いに同一形状になるように2分割して成る分割放物反射面ユニット30A、30Bを備え、これらがネジで締結して構成されている。 The reflection unit 5, as shown in FIG. 4, so that the same shape in a plane passing through the long axis K of the respective parabolic reflecting surface 11 formed by two-divided divided parabolic reflecting surface units 30A, 30B comprising a, it is constituted by fastening with screws.

図5は、分割放物反射面ユニット30Aの平面図である。 Figure 5 is a plan view of a split parabolic reflecting surface unit 30A. なお、他方の分割放物反射面ユニット30Bもこの図に示す構成と同様であるため図示及び説明は省略する。 Incidentally, it omitted illustration and explanation for the other also divided parabolic reflecting surface units 30B is the same as that shown in FIG.
分割放物反射面ユニット30Aは、例えばアルミニウム等の高熱伝導性を有する素材から鋳造により成形され、同図に示すように、長軸Kに沿って縦に2分割された放物反射面11を露出した面を有する。 Divided parabolic reflecting surface unit 30A is, for example, formed by casting a material having high thermal conductivity such as aluminum, as shown in the figure, the parabolic reflecting surface 11 which is bisected longitudinally along the major axis K with exposed surfaces. この面には、鋳造後に、放物反射面11の反射率を高めるためのアルミ蒸着が施され、その後、分割放物反射面ユニット30A、30Bを接合して上記反射ユニット5が構成される。 The surface, after casting, aluminum deposition to increase the reflectivity of the parabolic reflective surface 11 is applied, then divided parabolic reflecting surface unit 30A, is the reflecting unit 5 by joining 30B constructed. かかる構成によれば、放物反射面11が深い場合であっても、その表面全体にアルミ蒸着膜を均一に形成することができ、効率の良い反射鏡が簡単に得られる。 According to this configuration, even when the parabolic reflecting surface 11 is deep, the aluminum deposition film on the entire surface thereof can be formed uniformly, efficient reflector can be easily obtained.

反射ユニット5の放物反射面11は、反射面を放物面とした凹面鏡であって、その底部31には、LED9を臨む始端開口33が設けられており、当該始端開口33から放物反射面11内に臨むLED9が放射した放射光を平行光化して終端開口35から出射する。 Parabolic reflecting surface 11 of the reflecting unit 5, a concave mirror that is parabolic reflecting surface, the bottom thereof 31, and starting end opening 33 is provided to face the LED 9, parabolic reflected from the starting end opening 33 the radiation LED9 facing the plane 11 is emitted collimated emitted from the end opening 35. 平行光化して出射することで、遠方での光の拡がりを抑え照度低下を防止できる。 By emitted collimated, it is possible to prevent decrease in illuminance suppressed the spread of light in the distance.
ただし、単に平行光化して出射するだけでは、照射対象物までの距離が遠くなったときの光量不足を解消することはできず、軸光度を如何に高めることが重要となる。 However, merely it emits collimated, it is not possible to solve the insufficient amount of light when it becomes distant distance to the object to be irradiated, it is important to increase the axial luminosity in how. そこで、本実施形態では、それぞれの放物反射面11での軸光度を高めるために、各放物反射面11の形状を次ぎのようにしている。 Therefore, in this embodiment, in order to increase the axial intensity at each parabolic reflecting surface 11, so that the following the shape of each parabolic reflecting surface 11.

すなわち、図5に示すように、放物反射面11を、LED9が配される底部31から終端開口35までの軸長Lを超狭角配光が得られる長さとし、なおかつ、終端開口35の径D1を1/2ビーム角が5〜7度となる長さに形成している。 That is, as shown in FIG. 5, the parabolic reflective surface 11, the length Satoshi ultra narrow-angle light distribution and axial length L from the bottom 31 LED9 are arranged to the end opening 35 is obtained, yet, the end opening 35 the diameter D1 is 1/2 beam angle is formed to a length which is a 5 to 7 degrees. ここで、本実施形態において、超狭角配光は、数十〜百数十メートル以上離れた箇所を照射するのに使用される配光であり、1/2ビーム角が5〜7度となる配光である。 In the present embodiment, an ultra narrow-angle light distribution is a light distribution that is used to illuminate a portion apart several tens to hundred and several tens meters or more, and 1/2 beam angle 5-7 degrees it is a light distribution made.

具体的には、本実施形態では、LED9に幅W(図2(A))が約6.4mmのものを採用し、放物反射面11の始端開口33の径D2(図5)を、当該LED9の幅Wと同程度の大きさの約11mmとするとともに、当該始端開口33から終端開口35までの軸長Lを約116.55mmとし、また、終端開口35の径D1(図5)を1/2ビーム角が5〜7度(本実施形態では5度)となる径である約84.9mmとしている。 Specifically, in this embodiment, width LED 9 W (FIG. 2 (A)) is adopted as about 6.4 mm, the diameter D2 of the leading end opening 33 of the parabolic reflective surface 11 (Figure 5), while about 11mm of width W and same order of magnitude of the LED 9, the axial length L from the starting end opening 33 to the end opening 35 of about 116.55Mm, the diameter of the end opening 35 D1 (FIG. 5) it is approximately 84.9mm to a diameter at half the beam angle of 5-7 degrees (5 ° in this embodiment).
これにより、放物反射面11の終端開口35の開きである径D1が軸長Lに対して従来よりも非常に小さな形状となり、また、カットオフ角θ(図5)も約13.03度と小さくなることから、従来のものよりも平行光線が放物反射面11の長軸Kに集められ軸光度を向上させることができる。 This makes a very small shape than the conventional relative diameter D1 axial length L which is open end opening 35 of the parabolic reflective surface 11, also cut-off angle theta (Fig. 5) about 13.03 degrees since the smaller the can parallel light than the conventional improves the axial luminous intensity collected in the long axis K of the parabolic reflective surface 11. さらに、1/2ビーム角が5〜7度と小さいことから遠方での照射野の拡がりが抑えられ、遠方での照度が高められる。 Moreover, 1/2 beam angle spread of the irradiation field in the distance is suppressed since 5-7 degrees and less, illuminance in the distance is increased.

反射ユニット5においては、上記の通り、複数の放物反射面11のそれぞれから光を照射することで総合の出力を高めている。 In the reflection unit 5, as described above, to enhance the output of the overall by irradiating light from each of the plurality of parabolic reflecting surface 11. このとき、所定の遠方の照射野で、放物反射面11のそれぞれの光が分離してしまうと、当該照射野で所望の照度が得られない。 At this time, a predetermined distant irradiation field, the respective light parabolic reflective surface 11 will be separated, the desired illuminance is not obtained in the irradiation field. したがって、放物反射面11(LED9)のピッチPは、各放物反射面11から放射された光の拡がりを考慮し、それぞれの放射光が所定遠方の照射野で重なりを持つように設定されている。 Thus, the pitch P of the parabolic reflective surface 11 (LED 9) takes into account the spread of the light emitted from the parabolic reflecting surface 11, each of the emitted light is set to have an overlap in the irradiation field of the predetermined distant ing. これにより、LEDユニット3及び反射ユニット5を備えたLED照明器具1の軸光度が高められ、遠方で十分な照度を維持することができるのである。 Thus, LED unit 3 and the shaft luminous intensity of the LED lighting apparatus 1 having a reflecting unit 5 is increased, it is possible to maintain sufficient illuminance in the distance.
このとき、各放物反射面11の長軸Kを互いに平行とすることで、所定距離離れた照射野で集光することもなく、高い軸光度を長距離に亘って維持することができる。 In this case, by parallel to the longitudinal axis K of the parabolic reflection surface 11 to each other, it without for focusing at a predetermined distance apart irradiation field, can be maintained over a high axial luminous intensity long distances.

前掲図2に戻り、灯体ケース7は、正面視横長の箱形形状に構成され、熱伝導性の高い例えばアルミニウム合金により形成されている。 Returning to supra Figure 2, light body case 7 is formed in a box shape of the front view Horizontal is formed by a high thermal conductivity such as aluminum alloy. その正面側には、反射ユニット5及びLEDユニット3を収容する収容部41が設けられ、この収容部41の背後側には、電源回路などを納めるスペースが設けられており、また、取付用の支持アーム43が設けられている。 Its front side, is provided accommodating portion 41 for accommodating the reflecting unit 5 and the LED unit 3, Behind side of the housing portion 41, and a space is provided to pay such a power supply circuit, also for the mounting support arm 43 is provided. また、灯体ケース7の収容部41は、図1及び図2に示すように、反射ユニット5の先端側(終端開口35側)が正面に向けて突出する深さに成形されており、この突出した箇所を覆うように、ポリカーボネイト等の軽量な樹脂製透明カバー(前面カバー)45が設けられている。 The accommodating portion 41 of the lamp body case 7, as shown in FIGS. 1 and 2, the distal end side of the reflecting unit 5 (end opening 35 side) are formed to a depth to protrude toward the front, the so as to cover the protruding portion, lightweight plastic transparent cover (front cover) 45 is provided such as polycarbonate. このように灯体ケース7から反射ユニット5の先端側を突出させることで、意匠性に優れたLED照明器具1が得られる他、灯体ケース7の前後の長さを短縮できるため軽量化及び低コスト化が可能になる。 By thus protruding the tip side of the reflecting unit 5 from the lamp body case 7, except that the LED lighting apparatus 1 which is excellent in design properties can be obtained, and weight because it can reduce the length of the front and rear of the fixture casing 7 cost reduction is possible. ただし、灯体ケース7の前後の長さは、灯体ケース7からLEDユニット3の発熱を十分に放熱できる程度に設定されている。 However, the length of the front and rear of the lamp body case 7 is set enough to sufficiently radiate heat generated in the LED unit 3 from the fixture casing 7. このとき、反射ユニット5の放物反射面11の軸長Lが従来のものよりも長いため当該反射ユニット5の熱容量が増すことから灯体ケース7の更なる短縮化が可能になる。 In this case, the axial length L of the parabolic reflection surface 11 of the reflecting unit 5 becomes possible further reduction of the fixture casing 7 from increasing the heat capacity of the reflecting unit 5 is longer than the conventional.

以上説明したように、本実施形態によれば、放物反射面11を、LED9が配される底部31から終端開口35までの軸長Lを超狭角配光が得られる長さとし、終端開口35の径D2を1/2ビーム角が5〜7度となる径とする構成とした。 As described above, according to this embodiment, the parabolic reflecting surface 11, the length Satoshi ultra narrow-angle light distribution and axial length L from the bottom 31 LED9 are arranged to the end opening 35 is obtained, end openings the diameter D2 of 35 was configured to diameter 1/2 beam angle is 5-7 degrees.
この構成によれば、従来のものよりも平行光線が放物反射面11の長軸Kに集められ軸光度を向上させることができる。 According to this configuration, it is possible to parallel light than the conventional improves the axial luminous intensity collected in the long axis K of the parabolic reflective surface 11. さらに、1/2ビーム角が小さいため遠方での照射野の拡がりが抑えられ十分な照度を維持することができる。 Furthermore, it is possible to spread the radiation field in the far for 1/2 beam angle is small to maintain a sufficient illuminance suppressed. これにより、約100W(ワット)の出力のLEDユニット3を光源として、100メートル離れた対象物を十分な明るさで照らすことができるLED照明器具1が得られる。 Thus, as the light source of the LED unit 3 of the output of about 100W (Watts), LED lighting apparatus 1 can be obtained which can be illuminated 100 meters away object with sufficient brightness.

また本実施形態によれば、複数のLED9を備えてLEDユニット3を構成し、放物反射面11をLED9ごとに有する反射ユニット5を構成し、また、放物反射面11を互いに平行に設け、所定距離離れた照射野で放物反射面11のそれぞれから放射した光が重なるピッチPで複数のLED9及び放物反射面11をそれぞれ配置する構成とした。 According to this embodiment, an LED unit 3 comprises a plurality of LED 9, the parabolic reflective surface 11 constitutes the reflecting unit 5 having each LED 9, also provided with a parabolic reflection surface 11 parallel to each other and configured to respectively disposed a plurality of LED9 and parabolic reflecting surface 11 at a pitch P of light overlap radiated from each of the parabolic reflection surface 11 at a predetermined distance away irradiation field.
この構成により、1つのLED9を無理に高出力化せずとも所定距離離れた照射野で十分な照度が得られる。 This arrangement, sufficient illuminance can be obtained one LED9 in forcibly higher output allowed irradiation field a predetermined distance without. また、各放物反射面11が互いに平行であるため、所定距離離れた照射野で集光することもなく、高い軸光度を長距離に亘って維持することができる。 Further, since the parabolic reflecting surface 11 are parallel to each other, it without for focusing at a predetermined distance apart irradiation field, can be maintained over a high axial luminous intensity long distances.

また本実施形態によれば、反射ユニット5の放物反射面11の長軸Kに沿って分割して成る互いに同一形状の分割放物反射面ユニット30A、30Bのそれぞれにアルミ蒸着をし、それぞれの分割放物反射面ユニット30A、30Bを合わせて反射ユニット5を構成した。 According to this embodiment, divided parabolic reflecting surface units 30A of the same shape formed by dividing along the long axis K of the parabolic reflection surface 11 of the reflecting unit 5, the aluminum deposition to respective 30B, respectively divided parabolic reflecting surface units 30A, to constitute a reflecting unit 5 together 30B. これにより、放物反射面11が深い場合であっても、その表面全体にアルミ蒸着を均一に形成することができ、効率の良い反射鏡が簡単に得られる。 Accordingly, even when the parabolic reflective surface 11 is deep, the aluminum deposited on the entire surface can be uniformly formed, efficient reflector can be easily obtained.

また本実施形態によれば、LEDユニット3及び反射ユニット5を納める熱伝導性材から成る灯体ケース7を備え、当該灯体ケース7の正面から反射ユニット5の放物反射面11の終端開口35側を突出させ、当該突出させた部位を樹脂製透明カバー45で覆う構成とした。 According to the present embodiment includes a lamp body case 7 made of a thermally conductive material to pay LED unit 3 and the reflecting unit 5, end openings of the parabolic reflection surface 11 of the reflecting unit 5 from the front of the lamp body case 7 It is projected 35 side, and the site is the projected is covered with the resin transparent cover 45. この構成により、意匠性に優れたLED照明器具1が得られ、また、灯体ケース7の前後の長さを短縮できるため軽量化及び低コスト化が可能になる。 This configuration obtained LED lighting apparatus 1 which is excellent in design properties, also allows weight and cost reduction because it can reduce the length of the front and rear of the lamp body case 7. さらに、反射ユニット5の放物反射面11の軸長Lが従来のものよりも長いため当該反射ユニット5の熱容量が増すことから灯体ケース7の更なる短縮化が可能になる。 Further, the axial length L of the parabolic reflection surface 11 of the reflecting unit 5 becomes possible further reduction of the fixture casing 7 from increasing the heat capacity of the reflecting unit 5 is longer than the conventional.

<第2実施形態> <Second Embodiment>
図6〜図9は、本発明の第2実施形態に係るLED照明器具100の構成を示す図であり、図6は正面からみた斜視図、図7は正面図、図8は側面図、及び図9は背面からみた斜視図である。 6-9 is a diagram showing a configuration of the LED lighting apparatus 100 according to a second embodiment of the present invention, FIG. 6 is a perspective view as viewed from the front, FIG. 7 is a front view, FIG. 8 is a side view, and FIG. 9 is a perspective view as viewed from the rear. なお、これらの図において、第1実施形態で説明した部材については同一の符号を付して、その説明を省略する。 In these figures, members described in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
これらの図に示すように、LED照明器具100においては、3つのLED9及び放物反射面11を1列に配置した反射ユニット105Aと、2つのLED9及び放物反射面11を1列に配置した反射ユニット105Bと、を上下に2段配置した構成としている。 As shown in these figures, the LED lighting apparatus 100 includes a reflection unit 105A arranged three LED9 and parabolic reflecting surface 11 in a row, and arranged two LED9 and parabolic reflecting surface 11 in a row It is set to a reflection unit 105B, and arranged two stages in the vertical configuration. 各反射ユニット5の製造方法、及び光学特性については、第1実施形態で説明した通りである。 Method for producing the reflecting unit 5, and the optical properties are as described in the first embodiment.

このLED照明器具100においては、約40W(ワット)の出力のLED9を用いることとし、第1実施形態のLED照明器具1よりも高出力化を図っている。 In this LED lighting fixture 100 will be referred to with the LED9 output of about 40W (watts), thereby achieving a higher output than the LED lighting apparatus 1 of the first embodiment.
また本実施形態では、放物反射面11の始端開口33の径D2を、約20.7mmとするとともに、当該始端開口33から終端開口35までの軸長Lを約166mmとし、また、終端開口35の径D1を1/2ビーム角が5〜7度(本実施形態では5度)となる径である約113.6mmとしている。 In this embodiment also, the diameter D2 of the leading end opening 33 of the parabolic reflective surface 11, as well as about 20.7 mm, and the axial length L from the starting end opening 33 to end opening 35 of approximately 166 mm, also end opening (in this embodiment 5 degrees) 35 diameter D1 of the half beam angle of 5-7 degrees is approximately 113.6mm a diameter at. これにより、第1実施形態と同様に、平行光線が放物反射面11の長軸に集められて軸光度が向上し、さらに、1/2ビーム角が5〜7度と小さいことから遠方での照射野の拡がりが抑えられて遠方での照度が高められることとなる。 Thus, like the first embodiment, a parallel light beam is collected to the long axis of the parabolic reflective surface 11 improves the axial luminous intensity, further, the far since 1/2 beam angle 5-7 degrees and smaller irradiation field by spreading is suppressed for so that the illuminance of the far enhanced in.
また、このLED照明器具100においては、図7に示すように、上下の反射ユニット105A、105Bは、全てのLED9及び放物反射面11の離間距離であるピッチPが全て等距離となるように配置されており、照射野での照度ムラ発生を抑制することとしている。 Further, in the LED lighting fixture 100, as shown in FIG. 7, the upper and lower reflection units 105A, 105B, as the pitch P is a distance between all LED9 and parabolic reflective surface 11 are all equidistantly It is arranged, and with suppressing the uneven illuminance occurs in the irradiation field.
このとき、各列の放物反射面11から放射された光が所定距離離れた照射野で重なりを有するように各列間のピッチPが規定される。 At this time, light emitted from the parabolic reflective surface 11 of each column pitch P between each row so as to have an overlap at a predetermined distance apart irradiation field is defined. これにより、LED照明器具1の更なる高出力化が容易にできる。 Accordingly, a further LED lighting device 1 higher output can be easily.

なお、上述した実施形態は、あくまでも本発明の一態様を例示したものであって、本発明の趣旨を逸脱しない範囲で任意に変形及び応用が可能である。 Incidentally, the above-described embodiments, merely a an illustration of a one embodiment of the present invention, it is possible optionally to modifications and applications are made without departing from the scope of the present invention.

上述した第2実施形態では、上下段の反射ユニット105A、105BでLED9及び放物反射面11の数を異ならせたが、これに限らず、例えば図10(A)に示すように、同一個数としても良い。 In the second embodiment described above, the reflection unit 105A of upper and lower, but with different numbers of LED9 and parabolic reflective surface 11 at 105B, not limited thereto. For example, as shown in FIG. 10 (A), the same number it may be. このとき、各列の放物反射面11から放射された光が所定距離離れた照射野で重なりを有するように各列間のピッチが規定されることは第2実施形態で説明した通りである。 At this time, the light emitted from the parabolic reflective surface 11 of each column pitch between each row so as to have an overlap at a predetermined distance apart irradiation field is defined is as described in the second embodiment . なお、図10(B)に示すように、LED照明器具1の光軸位置に放物反射面11を配し、この放物反射面11を取り囲むように複数の放物反射面11を配した、同心円状の配置構成とすることで、LED照明器具1の軸光度を更に高めることもできる。 Incidentally, as shown in FIG. 10 (B), arranged parabolic reflective surface 11 to the optical axis position of the LED lighting apparatus 1, arranged a plurality of parabolic reflecting surface 11 so as to surround the parabolic reflective surface 11 , with concentric arrangement, it is possible to further increase the axial luminous intensity of the LED lighting apparatus 1. この場合において、それぞれの放物反射面11から放射された光が所定距離離れた照射野で重なりを有するように配置が規定される。 In this case, light emitted from each of the parabolic reflecting surface 11 is arranged so as to have an overlap at a predetermined distance apart irradiation field is defined.

また上述した実施形態において、超狭角配光以外の配光(例えば狭角配光など)を有する放物反射面を反射ユニット5に付加的に設けても良いことは勿論である。 Also in the embodiment described above, the parabolic reflective surface having a very narrow angle light distribution other than the light distribution (eg narrow-angle light distribution, etc.) may be additionally provided in the reflecting unit 5 can, of course.
さらに、上述した実施形態において、1つのLED9により所定距離離れた照射野で十分な照度が得られる場合には、LED9及び放物反射面11の数をそれぞれ1つとしても良い。 Further, in the above embodiment, when a sufficient illuminance can be obtained by one LED9 at a predetermined distance away irradiation field may LED9 and the number of parabolic reflective surface 11 as one respectively.

また上述した実施形態で説明したLED照明器具1は、数十メートル〜百数十メートル離れた照射野を十分な明るさで照らすことができることから、高層の建物を演出する投光器として好適に用いることができる。 The LED lighting apparatus 1 described in the embodiment described above, since it is possible to illuminate the several tens of meters to a hundred several tens of meters away irradiation field with sufficient brightness, suitably used as a projector to produce a high-rise building can. またLED照明器具1を複数並べて配置することで、野球場や競技場など、遠方から広範囲を照明する必要があるスタジアム照明にも好適に用いることができる。 Further, by arranging side by side a plurality of LED lighting fixtures 1, such as a baseball park or stadium, can be suitably used in stadium lighting needs to illuminate a wide range from a distance.

1、100 LED照明器具 3 LEDユニット 5 反射ユニット 7 灯体ケース 9、9A LED 1,100 LED lighting apparatus 3 LED unit 5 reflecting unit 7 lights body casing 9, 9A LED
D1 終端開口の径 D2 始端開口の径 11 放物反射面 15 LED素子 30A、30B 分割放物反射面ユニット 31 底部 33 始端開口 35 終端開口 45 樹脂製透明カバー(前面カバー) Diameter of diameter D2 start opening D1 end opening 11 parabolic reflective surface 15 LED elements 30A, 30B divided parabolic reflecting surface unit 31 bottom 33 start opening 35 end openings 45 resin transparent cover (front cover)
K 長軸 L 軸長 P ピッチ K long axis L-axis length P pitch

Claims (2)

  1. 複数のLEDと、前記LEDを臨ませる始端開口を底部に設けた放物反射面を前記LEDごとに有する反射ユニットとを備え、 Comprising a plurality of LED, and a reflection unit having a parabolic reflective surface of the leading end opening for exposing the LED is provided in the bottom for each of the LED,
    前記放物反射面のそれぞれを、前記LEDが配される底部から終端開口までの軸長を超狭角配光が得られる長さとし、前記終端開口の径を1/2ビーム角が5〜7度となる径としつつ、それぞれの前記放物反射面を互いに平行に設け、 Each of the parabolic reflecting surface, the LED is an axial length from the bottom to the end opening is very narrow angle light distribution is obtained which is arranged long Satoshi, the diameter of the end opening is 1/2 beam angle 5-7 while the diameter at degrees, provided parallel to each of the parabolic reflecting surface to each other,
    所定距離離れた照射野で前記放物反射面のそれぞれから放射した光が重なるピッチで前記LED及び放物反射面のそれぞれを配置するとともに、 With placing each of the LED and the parabolic reflecting surface at a pitch of light overlap radiated from each of the parabolic reflecting surface at a predetermined distance apart irradiation field,
    前記放物反射面を長軸に沿って互いに同一形状に分割して成る分割放物反射面のそれぞれに反射膜を形成し、それぞれの分割放物反射面を合わせて前記放物反射面を構成したことを特徴とするLED照明器具。 The parabolic reflecting surfaces forming a reflection film on each of the divided parabolic reflecting surface formed by dividing the same shape along the long axis, forming the parabolic reflecting surface together each of the divided parabolic reflecting surface LED lighting apparatus, characterized in that the.
  2. 前記LED及び前記放物反射面を納める熱伝導性材から成る灯体ケースを備え、当該灯体ケースの正面から前記放物反射面の終端開口側を突出させ、当該突出させた部位を樹脂製の透明な前面カバーで覆ったことを特徴とする請求項1に記載のLED照明器具。 Comprising a fixture case made of thermally conductive material to pay the LED and the parabolic reflecting surface, it is projected termination opening side of the parabolic reflecting surface from the front of the lamp body case made of resin sites was the projected LED lighting apparatus according to claim 1, characterized in that covered by the transparent front cover.
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