JP5591971B1

JP5591971B1 - LED lighting device

Info

Publication number: JP5591971B1
Application number: JP2013079388A
Authority: JP
Inventors: 潤笹嶋; 直樹芦萓; 丘菅野; 陽子一丸
Original assignee: Iris Ohyama Inc
Current assignee: Iris Ohyama Inc
Priority date: 2013-04-05
Filing date: 2013-04-05
Publication date: 2014-09-17
Anticipated expiration: 2033-04-05
Also published as: JP2014203686A

Abstract

【課題】ＬＥＤ照明装置による被照射面の色むら、照度むらを減衰させることができるＬＥＤ照明装置を提供する。
【解決手段】ＬＥＤ照明装置は、光源となるＬＥＤユニット部材４２と、それを点灯させる電源装置と、ＬＥＤユニット部材４２と前記電源装置とが取付けられる本体を備えている。ＬＥＤユニット部材４２のＬＥＤ照射光を配光する反射開口部４ｄの少なくとも周縁部４ｉに光拡散面を形成している。光拡散面を、反射開口部４ｄを除くＬＥＤユニット部材の表面全面に形成することもできる。反射開口部４ｄの開口部の周縁部を多角形状としてもよい。
【選択図】図８An LED illumination device capable of attenuating unevenness in color and illuminance unevenness of a surface to be irradiated by the LED illumination device.
An LED illumination device includes an LED unit member serving as a light source, a power supply device for lighting the LED unit member, and a main body to which the LED unit member and the power supply device are attached. A light diffusion surface is formed on at least the peripheral edge 4i of the reflective opening 4d that distributes the LED irradiation light of the LED unit member 42. The light diffusing surface can be formed on the entire surface of the LED unit member excluding the reflective opening 4d. The peripheral edge of the opening of the reflective opening 4d may be polygonal.
[Selection] Figure 8

Description

本発明は、ＬＥＤ照明装置に関し、特に駐車場等の屋外で使用するＬＥＤ照明装置に関するものである。 The present invention relates to an LED lighting device, and more particularly to an LED lighting device used outdoors such as a parking lot.

近年、環境意識の高まりから、省電力化に優れたＬＥＤ素子を光源に使用したＬＥＤ照明装置が盛んに用いられるようになってきた。特に最近は、駐車場灯、道路灯、高天井灯などに使用されている水銀灯等の高輝度放電ランプ（ＨＩＤランプ）の代替としても使用できるＬＥＤ照明装置が求められている。 2. Description of the Related Art In recent years, with increasing environmental awareness, LED lighting devices using LED elements with excellent power savings as light sources have been actively used. In particular, recently, there has been a demand for an LED lighting device that can be used as an alternative to a high-intensity discharge lamp (HID lamp) such as a mercury lamp used in parking lot lights, road lights, high ceiling lights, and the like.

例えば特許文献１には、筐体と、その一端部を覆うアウタレンズによって形成される空間内に、ＬＥＤが実装されたＬＥＤ基板、ＬＥＤを駆動する点灯装置、ＬＥＤから出射される光を配光制御するリフレクタを収容してなるＬＥＤ照明灯が開示されている。 For example, Patent Document 1 discloses a light distribution control of an LED substrate on which an LED is mounted, a lighting device that drives the LED, and light emitted from the LED in a space formed by a housing and an outer lens that covers one end of the housing. An LED illuminating lamp containing a reflector to be disclosed is disclosed.

このＬＥＤ照明灯によれば、ＬＥＤ照射光がリフレクタにより配光され、アウタレンズを透過して遠方に照射されるが、ＬＥＤ照射光の光成分の波長の違いにより、一部の光成分がリフレクタ周縁部で分光し発色する現象が生じることがある。例えば青色ＬＥＤと黄色蛍光体を組み合わせて白色光を照射するＬＥＤ発光体にあっては、波長の長い黄色の光成分がリフレクタ周縁部で発色する現象が生じることがあり、外観上の見栄えが悪いばかりでなく、アウタレンズで増幅されて被照射面の色むら、照度むら、の原因ともなる。 According to this LED illuminating lamp, the LED irradiation light is distributed by the reflector, and is transmitted through the outer lens to a distance. There is a case where a phenomenon occurs in which the light is split and colored at the part. For example, in an LED luminous body that emits white light by combining a blue LED and a yellow phosphor, a phenomenon that a yellow light component having a long wavelength develops color at the periphery of the reflector may occur, and the appearance is not good. In addition to being amplified by the outer lens, it also causes uneven color and uneven illumination on the irradiated surface.

特開２０１２−２４８３４２号公報JP 2012-248342 A

本発明は、上記問題点に鑑みなされたもので、ＬＥＤ照明装置による被照射面の色むら、照度むらを減衰させることができるＬＥＤ照明装置を提供するものである。 This invention is made | formed in view of the said problem, and provides the LED illumination apparatus which can attenuate the color irregularity of the surface to be irradiated by an LED illumination apparatus, and illumination intensity irregularity.

上記課題を解決するために、請求項１に係る発明にあっては、光源となる複数のＬＥＤユニット部材から構成されるＬＥＤユニットと、それを点灯させる電源装置とが取り付けられる上面カバーとなる本体と、
前記本体の下部に固定され、前記ＬＥＤユニットと前記電源装置を覆う透光性の保護カバーと、を備え、
前記ＬＥＤユニット部材は、
複数のＬＥＤ素子を実装したＬＥＤ基板と、
該ＬＥＤ基板を支持し前記本体に固定される基板支持体と、
前記ＬＥＤ基板の前面側に配置され、ＬＥＤ照射方向の前面部が略平面状であり、かつ前記ＬＥＤ基板のＬＥＤ素子に対応して該ＬＥＤ素子が露出する放物曲線の凹湾曲状の複数の反射開口部が形成された反射部材と、を有しており、
前記反射部材の前記反射開口部の周縁部を含む前記略平面状の前面部に光拡散面を形成したことを特徴とする。 In order to solve the above-mentioned problem, in the invention according to claim 1 , a main body serving as a top cover to which an LED unit composed of a plurality of LED unit members serving as a light source and a power supply device for lighting the LED unit are attached. And
A translucent protective cover that is fixed to the lower part of the main body and covers the LED unit and the power supply device;
The LED unit member is
An LED substrate on which a plurality of LED elements are mounted;
A substrate support that supports the LED substrate and is fixed to the body;
A plurality of concavely curved parabolic curves that are disposed on the front side of the LED substrate, the front portion in the LED irradiation direction is substantially planar, and the LED elements are exposed corresponding to the LED elements of the LED substrate. A reflective member formed with a reflective opening,
A light diffusing surface is formed on the substantially planar front surface portion including the peripheral edge portion of the reflective opening of the reflective member .

また請求項２に係る発明にあっては、光源となる複数のＬＥＤユニット部材から構成されるＬＥＤユニットと、それを点灯させる電源装置とが取り付けられる上面カバーとなる本体と、
前記本体の下部に固定され、前記ＬＥＤユニットと前記電源装置とを覆う透光性の保護カバーと、を備え、
前記ＬＥＤユニット部材は、
複数のＬＥＤ素子を実装したＬＥＤ基板と、
該ＬＥＤ基板を支持し前記本体に固定される基板支持体と、
前記ＬＥＤ基板の前面側に配置され、ＬＥＤ照射方向の前面部が略平面状であり、かつ前記ＬＥＤ基板のＬＥＤ素子に対応して該ＬＥＤ素子が露出する放物曲線の凹湾曲状の複数の反射開口部が形成された反射部材と、を有しており、
前記反射部材の前記反射開口部の周縁部を多角形状とするとともに、前記反射開口部の周縁部を含む前記略平面状の前面部に光拡散面を形成したことを特徴とする。 Moreover, in the invention which concerns on Claim 2 , the main body used as the upper surface cover to which the LED unit comprised from the several LED unit member used as a light source, and the power supply device which makes it light is attached ,
A translucent protective cover that is fixed to the lower part of the main body and covers the LED unit and the power supply device;
The LED unit member is
An LED substrate on which a plurality of LED elements are mounted;
A substrate support that supports the LED substrate and is fixed to the body;
A plurality of concavely curved parabolic curves that are disposed on the front side of the LED substrate, the front portion in the LED irradiation direction is substantially planar, and the LED elements are exposed corresponding to the LED elements of the LED substrate. A reflective member formed with a reflective opening,
The reflection member has a polygonal peripheral edge, and a light diffusing surface is formed on the substantially planar front surface including the peripheral edge of the reflection opening .

請求項１及び請求項２に係る発明のＬＥＤ照明装置によれば、反射開口部から配光されたＬＥＤ照射光の一部の光成分が反射開口部の周縁部で発色しても、その発色が拡散ないし分散されるため、被照射面の照度むら、色むらを減衰させることができる等の効果が得られる。 According to the LED illumination device of the invention according to claim 1 and claim 2, even if a part of the light component of the LED irradiation light distributed from the reflection opening is colored at the peripheral edge of the reflection opening, the color development Is diffused or dispersed, so that effects such as illuminance unevenness and color unevenness on the irradiated surface can be attenuated.

本発明の実施形態を示すＬＥＤ照明装置の全体外観斜視図である。It is a whole external appearance perspective view of the LED lighting apparatus which shows embodiment of this invention. 同じくＬＥＤ照明装置の組立分解斜視図である。It is an assembly exploded perspective view of a LED lighting device. 同じくＬＥＤ照明装置のＬＥＤユニット部材の組立分解斜視図である。It is an assembly exploded perspective view of the LED unit member of a LED lighting device similarly. 同じくＬＥＤ照明装置のＬＥＤユニット部材の斜視図である。It is a perspective view of the LED unit member of LED lighting device similarly. 図４に示すＬＥＤユニット部材の正面図である。It is a front view of the LED unit member shown in FIG. 図５のＡ-Ａ線に沿う断面図である。It is sectional drawing which follows the AA line of FIG. 図５のＢ-Ｂ線に沿う断面図である。It is sectional drawing which follows the BB line of FIG. 同じくＬＥＤユニット部材に光拡散面を形成した状態の斜視図である。It is a perspective view of the state where the light diffusion surface was similarly formed in the LED unit member. 同じくＬＥＤユニット部材の反射開口部を多角形状にした状態の斜視図である。It is the perspective view of the state which made the reflective opening part of the LED unit member the polygonal shape similarly. 同じくＬＥＤ照明装置の断面図である。It is sectional drawing of a LED illuminating device similarly. 同じくＬＥＤ照明装置の保護カバー（カバー部材）に光拡散面を形成した状態の斜視図である。It is a perspective view of the state which formed the light-diffusion surface in the protective cover (cover member) of a LED lighting apparatus similarly.

以下、本発明に係るＬＥＤ照明装置を駐車場灯に適用した場合の実施形態を説明する。図１は本発明に係るＬＥＤ照明装置（駐車場灯）の全体斜視図、図２はその組立分解図である。 Hereinafter, the embodiment at the time of applying the LED lighting device concerning the present invention to a parking lot light is described. FIG. 1 is an overall perspective view of an LED lighting device (parking lot light) according to the present invention, and FIG. 2 is an exploded view thereof.

図１及び図２に示すように、本発明のＬＥＤ照明装置１００は、上面カバーとなる本体１と、その本体１の下部に固定された保護カバー２と、本体１と保護カバー２（カバー部材）の内部に収納されるＬＥＤユニット４と、このＬＥＤユニット４の下端部（図示しない配線部分）を覆うためのインナーカバー３をと有している。本体１の内部には電源装置５と点灯制御装置６が設けられている。保護カバー２は本体１にネジ止め等により固定され、前記電源装置５と点灯制御装置６を含めて本体１内部に固定されたＬＥＤユニット４とインナーカバー３を覆っている。なお、本体１は金属や合成樹脂を使用して概略半円盤形状に成形されている。 As shown in FIGS. 1 and 2, an LED lighting device 100 according to the present invention includes a main body 1 serving as a top cover, a protective cover 2 fixed to the lower portion of the main body 1, a main body 1 and a protective cover 2 (cover member). ) And an inner cover 3 for covering a lower end portion (not shown) of the LED unit 4. A power supply device 5 and a lighting control device 6 are provided inside the main body 1. The protective cover 2 is fixed to the main body 1 by screws or the like, and covers the LED unit 4 and the inner cover 3 fixed inside the main body 1 including the power supply device 5 and the lighting control device 6. In addition, the main body 1 is shape | molded by the approximate semi-disc shape using the metal and the synthetic resin.

前記ＬＥＤユニット４は、本体１の側面部の内周面に沿って配設される複数のＬＥＤユニット部材４１〜４５から構成され、本体１内部の略中央部には別のＬＥＤユニット部材４６が配設されている（ここでは便宜上、ＬＥＤユニット部材４１〜４５をＬＥＤユニット４としているが、ＬＥＤユニット部材４６をＬＥＤユニット４から除外するものではない）。なお、ＬＥＤユニット部材４１が本体１の正面位置に配設されており、符号は省略しているが、このＬＥＤユニット部材４１を中心面としてＬＥＤユニット部材４１〜４５と同じ組み合わせが本体１の内周面方向に対称に配置（図２の奥方向にも配置）されている。 The LED unit 4 includes a plurality of LED unit members 41 to 45 disposed along the inner peripheral surface of the side surface portion of the main body 1, and another LED unit member 46 is provided at a substantially central portion inside the main body 1. (For convenience, the LED unit members 41 to 45 are LED units 4 here, but the LED unit member 46 is not excluded from the LED units 4). The LED unit member 41 is disposed at the front position of the main body 1, and the reference numerals are omitted. However, the LED unit member 41 has the same combination as the LED unit members 41 to 45 with the LED unit member 41 as a central plane. They are arranged symmetrically in the circumferential direction (also arranged in the back direction in FIG. 2).

これらＬＥＤユニット部材４１〜４６の基本的な部品構成を、ＬＥＤユニット部材４３を例にとって説明する。図３に示すように、ＬＥＤユニット部材４３は、複数のＬＥＤ素子４ａが実装されたＬＥＤ基板４ｂと、このＬＥＤ基板４ｂを支持する基板支持体４ｃと、ＬＥＤ基板４ｂのＬＥＤ素子４ａに対応して複数の反射開口部４ｄが形成された反射部材４ｅから構成されている。この反射開口部４ｄは、ＬＥＤ素子４ａの照射光を配光するものであり、ＬＥＤ基板４ｂに実装されたＬＥＤ素子４ａの発光部が露出するような凹状湾曲面となっている。反射部材４ｅはＬＥＤ基板４ａを覆うように配置されており、ＬＥＤ基板４ａとともに基板支持体４ｃにネジ止め等により密接に固定され、一体化されている。反射部材４ｅの前面部、すなわちＬＥＤ照射方向の面は図３〜図９に示すように略平面状となっている。なお、ＬＥＤ基板４ｂには配線コネクタ４ｆが設けられている。 The basic component configuration of the LED unit members 41 to 46 will be described by taking the LED unit member 43 as an example. As shown in FIG. 3, the LED unit member 43 corresponds to the LED substrate 4b on which the plurality of LED elements 4a are mounted, the substrate support 4c that supports the LED substrate 4b, and the LED elements 4a of the LED substrate 4b. The reflecting member 4e is formed with a plurality of reflecting openings 4d. This reflection opening 4d distributes the irradiation light of the LED element 4a, and has a concave curved surface that exposes the light emitting part of the LED element 4a mounted on the LED substrate 4b. The reflection member 4e is disposed so as to cover the LED substrate 4a, and is closely fixed to the substrate support 4c together with the LED substrate 4a by screwing or the like and integrated. The front surface portion of the reflecting member 4e, that is, the surface in the LED irradiation direction is substantially flat as shown in FIGS. The LED substrate 4b is provided with a wiring connector 4f.

反射部材４ｅは高反射率の添加材が配合された合成樹脂で一体成形、または、耐熱性の良好な合成樹脂で一体成形された後、アルミ蒸着メッキなどのメッキ加工を施し反射率を高められる（反射面となっている）。また、基板支持体４ｃは熱伝導率の高いアルミニウム等で造られており、平板面の下端部を略「く」字状に屈曲して本体１との固定部４ｇが形成されている。 The reflective member 4e can be integrally molded with a synthetic resin containing a highly reflective additive or integrally molded with a synthetic resin having good heat resistance, and then subjected to a plating process such as aluminum vapor deposition to increase the reflectance. (It is a reflective surface). The substrate support 4c is made of aluminum or the like having a high thermal conductivity, and the lower end portion of the flat plate surface is bent into a substantially “<” shape to form a fixing portion 4g with the main body 1.

他のＬＥＤユニット部材４１,４２及び４４〜４６も、ＬＥＤ基板４ｂのＬＥＤ素子４ａの配列及びこれに対応した反射部材４ｅの反射開口部４ｄの配列を除いて構成部品は同じである。 The other LED unit members 41, 42, and 44 to 46 have the same components except for the arrangement of the LED elements 4a of the LED substrate 4b and the arrangement of the reflection openings 4d of the reflection members 4e corresponding thereto.

これらＬＥＤユニット部材４１〜４６は、前述した反射部材４ｅの反射開口部４ｄの全部又は一部が、ＬＥＤ素子４ａの主光軸（配光曲線で最大光度を示す角度に沿った直線）に対して傾いた放物曲線の凹湾曲状反射面となっている。即ち、反射開口部４ｄは、下端部に小径開口部が形成され、上端部に大径開口部が形成された拡口形の湾曲形状となっており、ＬＥＤ素子４ａの発光部が小径開口部から露出するように配置されている。 In these LED unit members 41 to 46, all or a part of the reflection opening 4d of the reflection member 4e described above is relative to the main optical axis of the LED element 4a (a straight line along an angle indicating the maximum luminous intensity in the light distribution curve). It is a concave curved reflecting surface with a parabolic curve tilted. That is, the reflection opening 4d has a wide-open curved shape in which a small-diameter opening is formed at the lower end and a large-diameter opening is formed at the upper end, and the light-emitting portion of the LED element 4a extends from the small-diameter opening. It is arranged to be exposed.

反射開口部４ｄをＬＥＤ素子４ａの主光軸に対して傾けて形成する場合、その傾角が０度から２０度であれば、ＬＥＤ素子４ａの配光角をほぼ一定にしたまま照射角度を変えることができるので、この角度範囲内で照射角度を調整した反射開口部４ｄを形成することができる。反射開口部４ｄの傾け方向は任意であり、左右方向ないし上下方向に傾けて被照射面が所定照度以上となるように調整する。その代表例としてＬＥＤユニット部材４１について説明する。 When the reflective opening 4d is formed to be inclined with respect to the main optical axis of the LED element 4a, if the inclination angle is 0 to 20 degrees, the irradiation angle is changed while the light distribution angle of the LED element 4a is substantially constant. Therefore, it is possible to form the reflective opening 4d whose irradiation angle is adjusted within this angle range. The tilt direction of the reflection opening 4d is arbitrary, and is adjusted so that the irradiated surface has a predetermined illuminance or more by tilting in the left-right direction or the up-down direction. The LED unit member 41 will be described as a representative example.

図４及び図５に示すように、ＬＥＤユニット部材４１の反射部材４ｅは、上部横列と中央部横列に３個の反射開口部４１ａ〜４１ｃ及び４１ｄ〜４１ｆが形成され、下部横列に２個の反射開口部４１ｇ〜４１ｈが形成されている。また図５〜図７に示すように、ＬＥＤ基板４ｂには、反射開口部４１ａ〜４１ｈに対応した位置に、ＬＥＤ素子４１Ａ〜４１Ｈが配置されている。このＬＥＤ素子４１Ａ〜４１Ｈは、ＬＥＤ基板４ｂの上面に対して主光軸Ｘが垂直となるように配置されている。 As shown in FIGS. 4 and 5, the reflective member 4e of the LED unit member 41 is formed with three reflective openings 41a to 41c and 41d to 41f in the upper row and the central row, and two in the lower row. Reflective openings 41g to 41h are formed. As shown in FIGS. 5 to 7, LED elements 41 </ b> A to 41 </ b> H are arranged on the LED substrate 4 b at positions corresponding to the reflection openings 41 a to 41 h. The LED elements 41A to 41H are arranged such that the main optical axis X is perpendicular to the upper surface of the LED substrate 4b.

下部横列の反射開口部４１ｇ，４１ｈは、図６に示すように、一方の反射開口部４１ｇがＬＥＤ素子４１Ｇの主光軸Ｘに対して左側に所定角度傾いた放物曲線の凹湾曲面となっており、他方の反射開口部４１ｈがＬＥＤ素子４１Ｈの主光軸Ｘに対して右側に所定角度傾いた放物曲線の凹湾曲面となっている。 As shown in FIG. 6, the reflection openings 41g and 41h in the lower row have a parabolic curve curved surface in which one reflection opening 41g is inclined to the left by a predetermined angle with respect to the main optical axis X of the LED element 41G. The other reflection opening 41h is a parabolic concave curved surface inclined at a predetermined angle to the right with respect to the main optical axis X of the LED element 41H.

また、上部横列の反射開口部４１ａ〜４１ｃは、図７に示すように、左側の反射開口部４１ａがＬＥＤ素子４１Ａの主光軸Ｘに対して左側に所定角度傾いた放物曲線の凹湾曲面となっており、右側の反射開口部４１ｃと中央部の反射開口部４１ｂが、各ＬＥＤ素子４１Ｂ，４１Ｃの主光軸Ｘに対して右側に所定角度傾いた放物曲線の凹湾曲面となっている。なお、中央部横列の３個の反射開口部４１ｄ〜４１ｆも図５に示すようにＬＥＤ素子４１Ｄ〜４１Ｆの主光軸Ｘに対して左右方向に所定角度傾いた放物曲線の凹湾曲面となっている。 Further, as shown in FIG. 7, the upper row of reflective openings 41a to 41c has a parabolic concave curve in which the left reflective opening 41a is inclined to the left by a predetermined angle with respect to the main optical axis X of the LED element 41A. The right reflective opening 41c and the central reflective opening 41b are parabolic curved curved surfaces that are inclined to the right by a predetermined angle with respect to the main optical axis X of the LED elements 41B and 41C. It has become. In addition, as shown in FIG. 5, the three reflective openings 41d to 41f in the central row also have a parabolic curved concave surface inclined by a predetermined angle in the left-right direction with respect to the main optical axis X of the LED elements 41D to 41F. It has become.

以上はＬＥＤユニット部材４１を例にとって説明したが、その他のＬＥＤユニット部材４２〜４６の反射開口部４ｄも所定方向に傾けて形成されている。ただし、本体１の中央部に配置されるＬＥＤユニット部材４６は、主としてＬＥＤ照明装置１００の底面方向を照射するものであり照射むらが少ない場合は、反射開口部４ｄはＬＥＤ素子４ａの主光軸と一致した放物曲腺の凹湾曲面（反射開口部４ｄの主光軸に対する傾角が０度）とすることができる。 Although the LED unit member 41 has been described above as an example, the reflective opening portions 4d of the other LED unit members 42 to 46 are also formed to be inclined in a predetermined direction. However, the LED unit member 46 disposed in the central portion of the main body 1 mainly irradiates the bottom surface direction of the LED lighting device 100, and when the irradiation unevenness is small, the reflective opening 4d is the main optical axis of the LED element 4a. The concave curved surface of the parabola that coincides with (the inclination angle of the reflection opening 4d with respect to the main optical axis is 0 degree).

また、例えばＬＥＤユニット部材４３のように、奇数列の反射開口部が形成されている場合、中央列を中心にして左右列の反射開口部の傾きが対称となるようにしてもよい。具体的には、中央縦列の３個の反射開口部４ｄを傾けずにＬＥＤ素子４ａの主光軸と一致した放物曲線の凹湾曲面（反射開口部４ｄの主光軸に対する傾角が０度）とし、左右の縦列の３個の反射開口部４ｄを、一方を主光軸に対して所定角度左側に傾け、他方を右側に傾けるようにすることができる。このようにすれば、ひとつのＬＥＤユニット部材で広範囲のエリアを均一に照射することができる。 For example, when the odd-numbered rows of reflective openings are formed as in the LED unit member 43, the tilts of the left and right rows of reflective openings may be symmetric with respect to the central row. Specifically, the concave curved surface of the parabolic curve that coincides with the main optical axis of the LED element 4a without tilting the three reflection openings 4d in the central column (the inclination angle of the reflection opening 4d with respect to the main optical axis is 0 degree). ), And one of the three reflective openings 4d in the left and right columns can be inclined to the left by a predetermined angle with respect to the main optical axis, and the other can be inclined to the right. If it does in this way, a wide area can be uniformly irradiated with one LED unit member.

これらＬＥＤユニット部材４１〜４６の各反射開口部４ｄの傾角は、ＬＥＤ照射装置１００を設置する照明エリアが基準以上の照度となるように選択される。ちなみに駐車場灯は、道路１０ルクス以上、駐車エリア２ルクス以上の照度基準を満たすようにＬＥＤユニット部材４１〜４６の各反射開口部４ｄの数と配列（それに対応したＬＥＤ基板４ｂに実装されるＬＥＤ素子４ａの数と配列）を選択し、また各反射開口部４ｄの傾角を選択する。 The inclination angles of the respective reflective openings 4d of the LED unit members 41 to 46 are selected so that the illumination area in which the LED irradiation device 100 is installed has an illuminance equal to or higher than the reference. Incidentally, the parking lot light is mounted on the LED board 4b corresponding to the number and arrangement of the reflective opening portions 4d of the LED unit members 41 to 46 so as to satisfy the illuminance standard of the road 10 lux or more and the parking area 2 lux or more. The number and arrangement of the LED elements 4a are selected, and the inclination angle of each reflective opening 4d is selected.

ＬＥＤユニット部材４１〜４６の形態は図示したものに限定されるものではなく、光量を増減させるために、ＬＥＤ基板４ｂに実装されるＬＥＤ素子４ａの数と配列、それに対応した各反射開口部４ｄの数と配列を選択することができる。すなわち、ＬＥＤユニット部材４１〜４６の数を増減させることなく、個々のＬＥＤユニット部材のＬＥＤ素子４ａの数を増減するだけであるから、設置場所に対応したＬＥＤ照明装置１００の設計が容易となる。 The form of the LED unit members 41 to 46 is not limited to that shown in the figure, and in order to increase or decrease the amount of light, the number and arrangement of the LED elements 4a mounted on the LED substrate 4b, and the corresponding reflective openings 4d. The number and sequence can be selected. That is, since the number of the LED elements 4a of each LED unit member is only increased / decreased without increasing / decreasing the number of LED unit members 41-46, the design of the LED lighting device 100 corresponding to the installation location becomes easy. .

前述のＬＥＤユニット部材４１〜４６の反射部材４ｅの前面部には、光拡散面が形成されている。代表例として、図８に示すＬＥＤユニット部材４２は、その前面部に光拡散面４ｈが形成されている。光拡散面とするためには、保護カバー２の所定位置の樹脂面をサンドブラスト処理して微細な凹凸（シボ）を形成する方法、保護カバー２の型枠面の所定位置に微細な凹凸を形成して保護カバー２を成型加工する方法、透光性樹脂に光拡散剤を添加する方法等、任意の方法が選択できる。光拡散面４ｈは、少なくとも反射部材４ｅの開口周縁部４ｉに所定の幅で形成されていればよい。図８では、反射部材４ｅの前面部の光拡散面４ｈを薄墨で示し、開口周縁部４ｉの光拡散面をそれよりも濃い薄墨で示している。 A light diffusion surface is formed on the front surface of the reflection member 4e of the LED unit members 41 to 46 described above. As a representative example, the LED unit member 42 shown in FIG. 8 has a light diffusion surface 4h formed on the front surface thereof. In order to obtain a light diffusing surface, a resin surface at a predetermined position of the protective cover 2 is sandblasted to form fine irregularities (textures), and fine irregularities are formed at predetermined positions on the mold surface of the protective cover 2 Thus, an arbitrary method such as a method of molding the protective cover 2 or a method of adding a light diffusing agent to the translucent resin can be selected. The light diffusing surface 4h only needs to be formed with a predetermined width at least at the opening peripheral edge 4i of the reflecting member 4e. In FIG. 8, the light diffusion surface 4h on the front surface of the reflecting member 4e is indicated by light ink, and the light diffusion surface of the opening peripheral edge 4i is indicated by lighter ink.

このように、ＬＥＤユニット部材４１〜４６の前面部に光拡散面４ｈを形成することにより、ＬＥＤ素子４ａの照射光が反射開口部４ｄに反射して所定角度で出射する際に、一部の光成分がその周縁部で分光し発色しても、その発色が光拡散面４ｈで拡散されることになる。 Thus, by forming the light diffusion surface 4h on the front surface portion of the LED unit members 41 to 46, when the irradiation light of the LED element 4a is reflected by the reflection opening 4d and emitted at a predetermined angle, a part of the light diffusion surface 4h is formed. Even if the light component is spectrally separated and colored at its peripheral edge, the colored color is diffused by the light diffusion surface 4h.

図９は、ＬＥＤユニット部材４１〜４６の反射開口部４ｄの別の実施形態を示している。同図に示す反射開口部４ｄは、開口部の形状が多角形状に形成されている。この場合、円に近い多角形状であることが好ましい。このように反射開口部４ｄを多角形状とすることにより、ＬＥＤ素子４ａの照射光が反射開口部４ｄに反射して所定角度で出射する際に、光成分が角部において分散し、反射開口部４ｄの周縁部での一部の光成分の発色が減衰されることになる。この多角形状の反射開口部４ｄの少なくとも周縁部に、前述した光拡散面４ｈを形成すると発色減衰効果がさらに向上する。 FIG. 9 shows another embodiment of the reflective opening 4d of the LED unit members 41-46. The reflective opening 4d shown in the figure has a polygonal opening. In this case, a polygonal shape close to a circle is preferable. By making the reflective opening 4d into a polygonal shape in this way, when the irradiation light of the LED element 4a is reflected by the reflective opening 4d and emitted at a predetermined angle, the light component is dispersed at the corner, and the reflective opening The color development of some light components at the peripheral edge of 4d is attenuated. When the light diffusing surface 4h is formed at least at the peripheral edge of the polygonal reflective opening 4d, the color attenuation effect is further improved.

なお、図１〜図５に示すユニット部材４１〜４６には、前記光拡散面４ｈを示していないが、図８と同じような光反射面４ｈが形成されていることは言うまでもない。 In addition, although the said light-diffusion surface 4h is not shown in the unit members 41-46 shown in FIGS. 1-5, it cannot be overemphasized that the light reflection surface 4h similar to FIG. 8 is formed.

このようなＬＥＤユニット部材４１〜４５は、図２に示すように、本体１の内面周方向に形成された縦横リブ形状の固定部１ａにネジ止め等により固定される。またＬＥＤユニット部材４６は、本体１の内面略中央部に形成された縦横リブ形状の固定部１ｂにネジ止め等により固定される。この中央部のＬＥＤユニット部材４６は、所定の角度で下面に向けて設置されている。なお、図示しないが、これら各ＬＥＤユニット部材４１〜４６は、電源装置５と配線コネクタ４ｆを介して配線により電気的に接続されている。 As shown in FIG. 2, such LED unit members 41 to 45 are fixed to a fixing portion 1 a having a vertical and horizontal rib shape formed in the circumferential direction of the inner surface of the main body 1 by screwing or the like. The LED unit member 46 is fixed to a fixing portion 1b having a vertical and horizontal rib shape formed at a substantially central portion of the inner surface of the main body 1 by screws or the like. The central LED unit member 46 is installed at a predetermined angle toward the lower surface. Although not shown, each of these LED unit members 41 to 46 is electrically connected to the power supply device 5 via a wiring connector 4f by wiring.

インナーカバー３は、本体１の形状と対応した概略半円盤形状であり、合成樹脂を使用して一体成形されている。このインナーカバー３は、図２に示すように、底面部３ａから立ち上がる周面部３ｂの下端縁部に折返部３ｃが形成されている。また、底面部３ａには本体１の内部に固定するための複数の凸状固定部３ｄが形成され、インナーカバー３は、この固定部３ｄと対応して本体１内部に設けられた複数の固定ボス１ｃとネジ止め等により固定されている。 The inner cover 3 has a substantially semi-disc shape corresponding to the shape of the main body 1 and is integrally formed using a synthetic resin. As shown in FIG. 2, the inner cover 3 has a folded portion 3c formed at the lower edge of the peripheral surface portion 3b rising from the bottom surface portion 3a. The bottom surface portion 3a is formed with a plurality of convex fixing portions 3d for fixing inside the main body 1, and the inner cover 3 has a plurality of fixing portions provided inside the main body 1 corresponding to the fixing portions 3d. It is fixed to the boss 1c by screwing or the like.

インナーカバー３の略中央部には、ＬＥＤユニット４６と対面する傾斜部３ｅが形成されており、その傾斜部３ｅには開口部３ｆが開口されている。ＬＥＤユニット４６はその開口部３ｆを通して照射され、図１で示す支柱等の被取付部材７とは反対方向の下面が照射されるようになっている。 An inclined portion 3e facing the LED unit 46 is formed at a substantially central portion of the inner cover 3, and an opening 3f is opened in the inclined portion 3e. The LED unit 46 is irradiated through the opening 3f, and the lower surface in the direction opposite to the attached member 7 such as a column shown in FIG. 1 is irradiated.

インナーカバー３は、本体１の内部に固定された電源装置５と点灯制御装置６を下方から覆うとともに、折返部３ｃにより各ＬＥＤユニット部材４１〜４６の下部に備えられた配線コネクタ４ｆと、それに接続された配線を覆っている。インナーカバー３は、図１に示すように、ＬＥＤユニット４の下端部を覆っているだけであるから、ＬＥＤユニット４からのＬＥＤ照射を妨げることはない。 The inner cover 3 covers the power supply device 5 and the lighting control device 6 fixed from the inside of the main body 1 from below, and also includes a wiring connector 4f provided at the lower part of each LED unit member 41 to 46 by a folded portion 3c, Covers the connected wiring. As shown in FIG. 1, the inner cover 3 only covers the lower end of the LED unit 4, and therefore does not hinder the LED irradiation from the LED unit 4.

保護カバー２は、インナーカバー３、ＬＥＤユニット４、電源装置５、点灯制御装置６の全体を覆い、上面カバーとなる本体１とともにこれらの収納部品を、風雨、粉塵等の外部環境から保護している。保護カバー２は、図２に示すように、本体１の形状に対応して略半円筒体のボックス形状となっており、本体１の底面形状に対応した上部開口部２ａと、前記インナーカバー３、ＬＥＤユニット４、電源装置５、点灯制御装置等の内装部品を収納できる深さの側面部２ｂと、底面部２ｃを有している。この保護カバー２は透光性樹脂により一体成形により造られている。 The protective cover 2 covers the entire inner cover 3, LED unit 4, power supply device 5, lighting control device 6, and protects these storage components together with the main body 1 serving as a top cover from the external environment such as wind and rain and dust. Yes. As shown in FIG. 2, the protective cover 2 has a substantially semi-cylindrical box shape corresponding to the shape of the main body 1, an upper opening 2 a corresponding to the bottom shape of the main body 1, and the inner cover 3. The side part 2b and the bottom part 2c are deep enough to accommodate interior parts such as the LED unit 4, the power supply device 5, and the lighting control device. This protective cover 2 is made of a translucent resin by integral molding.

また、図１０に示すように、保護カバー２のＬＥＤユニット４と対面する側面部２ｂ−１（保護カバー２の前面部）は、ＬＥＤユニット４との間隔が小さくなるようにＬＥＤユニット４側に傾斜した形状となっている。これにより、ＬＥＤ照射光の側面部２ｂ−１への入射角が直角又は直角に近づくため、ＬＥＤ照射光が目標照射面に効率よく到達することになる。さらに側面部２ｂ−１が傾斜面となるため、透光性の阻害要因となる水滴、ゴミ等の付着物除去効果が期待でき、風圧減衰効果も期待できる。 Further, as shown in FIG. 10, the side surface portion 2 b-1 (front surface portion of the protective cover 2) facing the LED unit 4 of the protective cover 2 is on the LED unit 4 side so that the distance from the LED unit 4 is small. It has an inclined shape. Thereby, since the incident angle to the side part 2b-1 of LED irradiation light is right angle or close to right angle, LED irradiation light efficiently reaches a target irradiation surface. Furthermore, since the side surface 2b-1 is an inclined surface, it is possible to expect an effect of removing adhering substances such as water droplets and dust, which are factors that impede translucency.

この保護カバー２の全面又は一部には光拡散面（光散乱面）が形成されている。光拡散面を形成する手法は、前述のＬＥＤユニット部材４１〜４６に形成された光拡散面と同じである。 A light diffusion surface (light scattering surface) is formed on the entire surface or a part of the protective cover 2. The method for forming the light diffusion surface is the same as the light diffusion surface formed on the LED unit members 41 to 46 described above.

図１１に示す保護カバー２は、ＬＥＤユニット４からのＬＥＤ照射光の透光部２ｄを除き、保護カバー２の側面部２ｂと底面部２ｃの全面に光拡散面２０（図中において薄墨で示す）が形成されている。透光部２ｄは、前述したＬＥＤユニット部材４１〜４５の反射開口部４ｄの配列に対応した位置に形成されており、光拡散処理がなされずに素材である透光性樹脂材が露出している。透光部２ｄは、反射開口部４ｄの射光側開口形状に対応して円形に形成されている。また、透光部２ｄの透光性を高めるために金型の透光部２ｄの対応部を磨き処理を行い、透光部２ｄを鏡面仕上げにすることもできる。透光部２ｄからは、ＬＥＤユニット４のＬＥＤ照射光が透過し所定照射角度で遠方の被照射面を照射する。 The protective cover 2 shown in FIG. 11 has a light diffusing surface 20 (indicated by light ink in the drawing) on the entire surface of the side surface portion 2b and the bottom surface portion 2c of the protective cover 2 except for the translucent portion 2d of the LED irradiation light from the LED unit 4. ) Is formed. The translucent part 2d is formed at a position corresponding to the arrangement of the reflective openings 4d of the LED unit members 41 to 45 described above, and the translucent resin material as a material is exposed without being subjected to the light diffusion process. Yes. The translucent part 2d is formed in a circular shape corresponding to the light-emitting side opening shape of the reflective opening 4d. Moreover, in order to improve the translucency of the translucent part 2d, the corresponding | compatible part of the translucent part 2d of a metal mold | die can be polished, and the translucent part 2d can also be mirror-finished. From the translucent part 2d, the LED irradiation light of the LED unit 4 is transmitted and irradiates a far irradiated surface at a predetermined irradiation angle.

この透光部２ｄの形状は、本発明では特に限定されるものではないが、反射開口部４ｄの開口部と相似する形状であり、透光部２ｄの領域を反射開口部４ｄの開口領域よりも小さくするのが好ましい。具体的には、透光部２ｄの口径を反射開口部４ｄの周縁部の開口径よりもやや小径の円形とするのが好ましい。これにより、反射開口部４ｄの周縁部が光拡散面２０で覆われることになり、ＬＥＤ素子４ａの照射光が反射開口部４ｄに反射して所定角度で出射する際に、一部の光成分がその周縁部付近で分光し発色しても、その発色が保護カバー２に形成された光反射面２０で拡散、減衰されることになる。 The shape of the light transmitting portion 2d is not particularly limited in the present invention, but is similar to the opening portion of the reflective opening 4d, and the region of the light transmitting portion 2d is more than the opening region of the reflective opening portion 4d. It is also preferable to make it smaller. Specifically, it is preferable that the diameter of the translucent part 2d is a circle having a slightly smaller diameter than the opening diameter of the peripheral part of the reflective opening 4d. As a result, the peripheral edge of the reflective opening 4d is covered with the light diffusing surface 20, and a part of the light component is emitted when the irradiation light of the LED element 4a is reflected by the reflective opening 4d and emitted at a predetermined angle. Even if the light is dispersed and colored near the periphery, the color is diffused and attenuated by the light reflecting surface 20 formed on the protective cover 2.

なお、反射開口部４ｄの、周縁部付近での発色減衰を目的とするならば、保護カバー２の全面に光拡散面２０を形成する必要はなく、少なくとも反射開口部４ｄの周縁部を覆う領域に光仮拡散面２０を形成すればよい。また、保護カバー２０の光拡散面２０だけで発色減衰効果が達成できるのであれば、これだけで充分であるが、前述したようなＬＥＤユニット部材４１〜４６の少なくとも反射開口部４ｄの周縁部に光拡散面を形成する手法や、反射開口部４ｄを多角形状にする手法を組み合わせることもできる。 For the purpose of color attenuation near the periphery of the reflective opening 4d, it is not necessary to form the light diffusing surface 20 on the entire surface of the protective cover 2, and at least a region that covers the peripheral edge of the reflective opening 4d. The light temporary diffusing surface 20 may be formed on the substrate. Further, this is sufficient as long as only the light diffusing surface 20 of the protective cover 20 can achieve the color attenuation effect. However, at least the peripheral edge of the reflective opening 4d of the LED unit members 41 to 46 as described above is used. A method of forming a diffusing surface and a method of making the reflective opening 4d into a polygonal shape can also be combined.

また、保護カバー２の透光部２ｄを除いた全面を光拡散面２０とすることにより、ＬＥＤユニット４の各ＬＥＤ素子４ａからのＬＥＤ照射光の一部が保護カバー２に入射し、その光成分が光拡散面２０によって保護カバー２の全面に拡散される。このため、特にＬＥＤ照射装置１００の設置場所近辺の照射面の照射むらが解消され均一に照射されることになる。また、保護カバー２への投射光が拡散されることからグレア低減効果も得られる。 Further, by making the entire surface of the protective cover 2 excluding the translucent portion 2d into the light diffusion surface 20, a part of the LED irradiation light from each LED element 4a of the LED unit 4 enters the protective cover 2, and the light The components are diffused over the entire surface of the protective cover 2 by the light diffusion surface 20. For this reason, the irradiation unevenness of the irradiation surface especially in the vicinity of the installation place of the LED irradiation apparatus 100 is eliminated, and the irradiation is performed uniformly. Moreover, since the projection light to the protective cover 2 is diffused, a glare reduction effect can also be obtained.

また、ＬＥＤユニット４の特に下段に配列した各ＬＥＤ素子４ａからの照射光の一部も保護カバー底面部２ｃに入射して該底面部２ｃに拡散するが、このＬＥＤユニット４からの照射光でＬＥＤ照明装置１００の底面方向の被照射面が基準以上の照度で均一に照射される場合は、前記ＬＥＤユニット部材４６を省略することができる。この場合、底面方向の被照射面の照度を高くするため、ＬＥＤユニット４の下段に配列した各反射開口部４ｄの全部又は一部を、ＬＥＤ素子４ａの主光軸に対して下方に所定角度傾け、光拡散面が形成された底面部２ｃへの入射光量を増大させてもよい。 In addition, a part of the irradiation light from each LED element 4a arranged in the lower stage of the LED unit 4 also enters the protective cover bottom surface portion 2c and diffuses to the bottom surface portion 2c. When the irradiated surface in the bottom direction of the LED lighting device 100 is uniformly irradiated with an illuminance greater than or equal to the reference, the LED unit member 46 can be omitted. In this case, in order to increase the illuminance of the irradiated surface in the bottom direction, all or a part of each of the reflective openings 4d arranged in the lower stage of the LED unit 4 is set downward at a predetermined angle with respect to the main optical axis of the LED element 4a. The amount of light incident on the bottom surface portion 2c on which the light diffusion surface is formed may be increased.

保護カバー２の光拡散面２０を形成する位置は、前述した形態に限らず、ＬＥＤユニット４の配置、反射開口部４ｄの配列、保護カバー２の形状、等に応じて必要な位置に形成することができる。 The position where the light diffusing surface 20 of the protective cover 2 is formed is not limited to the above-described form, but is formed at a necessary position according to the arrangement of the LED units 4, the arrangement of the reflective openings 4d, the shape of the protective cover 2, and the like. be able to.

なお、本体１の背面部（被取付部材７側）には、図２に示すように自動点滅ユニット８が設けられており、自動点滅ユニット８内に設けたセンサー出力信号に応じて、電源装置５に接続されている点灯制御装置６が供給電力の遮断、供給の制御を行い、ＬＥＤユニット４の消灯、点灯が行われる。 Note that an automatic flashing unit 8 is provided on the back surface of the main body 1 (attached member 7 side) as shown in FIG. 2, and a power supply device is provided according to a sensor output signal provided in the automatic flashing unit 8. The lighting control device 6 connected to 5 cuts off the supplied power and controls the supply, and the LED unit 4 is turned off and turned on.

このようなＬＥＤ照明装置１００は、図１に示すように電柱やポール等の被取付部材７に取付アーム８により取り付けられる。この際、照明エリアが所定の照度となるようにＬＥＤ照明装置１００の取り付け位置の高さを調整する。 As shown in FIG. 1, such an LED lighting device 100 is attached to a member 7 to be attached such as a utility pole or a pole by a mounting arm 8. At this time, the height of the mounting position of the LED lighting device 100 is adjusted so that the illumination area has a predetermined illuminance.

本発明のＬＥＤユニット部材４１〜４６は、反射部材４ｅを一体成形により製造することができるため、各ＬＥＤユニット部材４１〜４６を安価に量産することが可能となり、しかも、上述したようにＬＥＤユニット部材４２〜４５を、ＬＥＤユニット部材４１を中心にして左右対称に本体１に固定するだけであるから、組立性も向上する。 Since the LED unit members 41 to 46 of the present invention can be manufactured by integrally molding the reflecting member 4e, each of the LED unit members 41 to 46 can be mass-produced at low cost, and as described above, the LED unit. Since the members 42 to 45 are simply fixed to the main body 1 symmetrically about the LED unit member 41, the assemblability is also improved.

ＬＥＤユニット部材４１〜４６の反射開口部４ｄをＬＥＤ素子４ａの主光軸に対して傾けただけでは所定エリアの照度が不足する場合など、必要に応じてＬＥＤユニット部材の全体を傾斜させてもよい。上述の実施形態では、基板支持体４ｃを傾斜させることによりそれを実現することができる。 Even if the LED unit members 41 to 46 are tilted with respect to the main optical axis of the LED element 4a, the entire LED unit member may be tilted as necessary, such as when the illuminance of a predetermined area is insufficient. Good. In the above-described embodiment, this can be realized by inclining the substrate support 4c.

上述した実施形態は本発明の一例を示すものであり、ＬＥＤ照明装置の全体形状や細部の構成は、使用目的、設置場所等に応じて任意に変更することができる。なお、本発明のＬＥＤ照明装置は、街路灯等の屋外灯、高天井灯等の屋内灯として使用することができる。 Embodiment mentioned above shows an example of this invention, The whole shape of LED lighting apparatus and a structure of detail can be changed arbitrarily according to a use purpose, an installation place, etc. The LED lighting device of the present invention can be used as an outdoor lamp such as a street lamp and an indoor lamp such as a high ceiling lamp.

１本体
２保護カバー
２ｂ保護カバー側面部
２ｃ保護カバー底面部
２ｄ透光部
４ｄ反射部材
４ｄ反射開口部
４ｈ光拡散面
４ｉ反射開口部周縁部
２０光拡散面
４１〜４６ＬＥＤユニット部材 DESCRIPTION OF SYMBOLS 1 Main body 2 Protective cover 2b Protective cover side surface part 2c Protective cover bottom face part 2d Translucent part 4d Reflective member 4d Reflective opening part 4h Light diffusing surface 4i Reflecting opening peripheral part 20 Light diffusing surface 41-46 LED unit member

Claims

光源となる複数のＬＥＤユニット部材から構成されるＬＥＤユニットと、それを点灯させる電源装置とが取り付けられる上面カバーとなる本体と、
前記本体の下部に固定され、前記ＬＥＤユニットと前記電源装置を覆う透光性の保護カバーと、を備え、
前記ＬＥＤユニット部材は、
複数のＬＥＤ素子を実装したＬＥＤ基板と、
該ＬＥＤ基板を支持し前記本体に固定される基板支持体と、
前記ＬＥＤ基板の前面側に配置され、ＬＥＤ照射方向の前面部が略平面状であり、かつ前記ＬＥＤ基板のＬＥＤ素子に対応して該ＬＥＤ素子が露出する放物曲線の凹湾曲状の複数の反射開口部が形成された反射部材と、を有しており、
前記反射部材の前記反射開口部の周縁部を含む前記略平面状の前面部に光拡散面を形成したことを特徴とするＬＥＤ照明装置。 A main body serving as a top cover to which an LED unit composed of a plurality of LED unit members serving as a light source and a power supply device for lighting the LED unit are attached ;
A translucent protective cover that is fixed to the lower part of the main body and covers the LED unit and the power supply device;
The LED unit member is
An LED substrate on which a plurality of LED elements are mounted;
A substrate support that supports the LED substrate and is fixed to the body;
A plurality of concavely curved parabolic curves that are disposed on the front side of the LED substrate, the front portion in the LED irradiation direction is substantially planar, and the LED elements are exposed corresponding to the LED elements of the LED substrate. A reflective member formed with a reflective opening,
An LED illumination device, wherein a light diffusion surface is formed on the substantially planar front surface portion including a peripheral edge portion of the reflection opening of the reflection member .

光源となる複数のＬＥＤユニット部材から構成されるＬＥＤユニットと、それを点灯させる電源装置とが取り付けられる上面カバーとなる本体と、
前記本体の下部に固定され、前記ＬＥＤユニットと前記電源装置とを覆う透光性の保護カバーと、を備え、
前記ＬＥＤユニット部材は、
複数のＬＥＤ素子を実装したＬＥＤ基板と、
該ＬＥＤ基板を支持し前記本体に固定される基板支持体と、
前記ＬＥＤ基板の前面側に配置され、ＬＥＤ照射方向の前面部が略平面状であり、かつ前記ＬＥＤ基板のＬＥＤ素子に対応して該ＬＥＤ素子が露出する放物曲線の凹湾曲状の複数の反射開口部が形成された反射部材と、を有しており、
前記反射部材の前記反射開口部の周縁部を多角形状とするとともに、前記反射開口部の周縁部を含む前記略平面状の前面部に光拡散面を形成したことを特徴とするＬＥＤ照明装置。 A main body serving as a top cover to which an LED unit composed of a plurality of LED unit members serving as a light source and a power supply device for lighting the LED unit are attached ;
A translucent protective cover that is fixed to the lower part of the main body and covers the LED unit and the power supply device;
The LED unit member is
An LED substrate on which a plurality of LED elements are mounted;
A substrate support that supports the LED substrate and is fixed to the body;
A plurality of concavely curved parabolic curves that are disposed on the front side of the LED substrate, the front portion in the LED irradiation direction is substantially planar, and the LED elements are exposed corresponding to the LED elements of the LED substrate. A reflective member formed with a reflective opening,
The LED illumination device according to claim 1, wherein a peripheral portion of the reflective opening of the reflective member has a polygonal shape, and a light diffusion surface is formed on the substantially planar front surface including the peripheral portion of the reflective opening .