JPH0362403A - Floodlighting device - Google Patents

Abstract

PURPOSE:To increase central luminous intensity and improve uniformity rate of illuminance by disposing side surface auxiliary reflecting plates inclined in the inward horizontal direction from the center parts of both side surface reflecting plate parts toward the back side and also in the inward vertical direction to the upper side and divided into a plurality of sections on the inner sides of the both side surface reflecting plate parts of a reflector. CONSTITUTION:The light flux radiated from a light source 1 has an increased central luminous intensity and no turbulence of downward light distribution by a main reflecting plate part 4 and an auxiliary reflecting plate 12, and a light distribution having a good uniformity ratio of illuminance is obtained by a front side reflecting plate part 5 having radiating surfaces and plane surfaces alternately disposed and the auxiliary reflecting plate 12 having the lower surface side as a reflecting surface. Further, as the reflecting plate 12 has the upper surface side as a non-reflecting surface, the upward light distribution is interrupted, and no glare is caused. The lateral extension in the light axial position is increased by plural steps of both side surface auxiliary reflecting plates 13, 13 inclined in the inward horizontal direction from nearly the center of side surface reflecting plates 6, 6 toward the back side and also in the inward vertical direction toward the upper side, the central light intensity in horizontal light distribution is increased to improve the uniformity ratio of light distribution and eliminate light distribution unevenness.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は、例えば、空港におけるエプロン照明灯などに
適する投光装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a lighting device suitable for, for example, apron lighting at an airport.

（従来の技術） この種の空港のエプロン照明灯は、夜間における航空機
のエプロン上の走行、乗降、点検手入れ、給油などの諸
作業を実施できるように照明する投光装置で、管制塔内
の管制官や航空機操縦者に有害なグレアを与える上方配
光がなく、下方配光が重要となっており、配光は照射面
に対して均斉度のよい照明が要求される。(Prior art) This type of airport apron lighting is a floodlighting device that illuminates the apron of an aircraft at night to enable various operations such as traveling, boarding and disembarking, inspection and maintenance, refueling, etc. There is no upward light distribution that causes harmful glare to air traffic controllers and aircraft operators, and downward light distribution is important, and the light distribution requires well-balanced illumination to the irradiated surface.

従来の投光装置は、例えば、特公昭３８−４０５０号公
報に記載されているように、反射体は前面から上面を介
して後面に連なる複数の放物線面からなる反射板部を組
合わせ、この両側に側面反射板部を形成した構造が採ら
れていた。In a conventional light projecting device, for example, as described in Japanese Patent Publication No. 38-4050, the reflector is a combination of a reflector plate section consisting of a plurality of parabolic surfaces extending from the front surface through the upper surface to the rear surface. A structure was adopted in which side reflectors were formed on both sides.

（発明が解決しようとする課題） 上記従来の投光装置のように、複数の放物線面からなる
反射板部を組合わせ、両側に側面反射板部を形成した反
射体では、中心光度が低く、中心光度を高めるために、
側面反射板部を傾斜させたり、放物線面補助反射板を設
けることが考えられるが、いずれも単一平面または放物
線面となるため、集光反射となり、中央光度が高められ
ても、光が均斉度よく制御されない問題を有していた。(Problems to be Solved by the Invention) Like the above-mentioned conventional floodlighting device, a reflector in which a plurality of parabolic reflector sections are combined and side reflector sections are formed on both sides has a low central luminous intensity; To increase the central luminosity,
It is possible to tilt the side reflector or install a parabolic auxiliary reflector, but since either of them is a single plane or a parabolic surface, the light will be condensed and reflected, and even if the central luminous intensity is increased, the light will not be uniform. It had problems that were not well controlled.

本発明は上記問題点に鑑みなされたもので、中心光度を
高め、均斉度が改善された投光装置を提供するものであ
る。The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a light projecting device with increased central luminous intensity and improved uniformity.

〔発明の構成〕[Structure of the invention]

（課題を解決するための手段） 本発明の投光装置は、軸方向に長い光源と、この光源を
内包し照射開口部を下面に形成した反射体とを具備し、
前記反射体は、両側面反射板部の内側にこの側面反射板
部の略中央部から後側に向かって内側に水平方向に傾斜
するとともに上側に向かって内側に垂直方向に傾斜し複
数段面に分割した側面補助反射板を配設したことを特徴
とするものである。(Means for Solving the Problems) A light projection device of the present invention includes a light source that is long in the axial direction, and a reflector that includes the light source and has an irradiation opening formed on its lower surface,
The reflector has a plurality of step surfaces on the inside of the both side reflector portions, which are horizontally inclined inward toward the rear from approximately the center of the side reflector portion and vertically inclined inward toward the upper side. It is characterized by the provision of a side auxiliary reflector plate divided into two parts.

（作用） 本発明の投光装置は、側面反射板部が複数段のため、集
光配光とならず、複数段の側面反射板部が水平方向の配
光を拡げるとともに、中央光度が高められ、配光むらが
生じることなく、光の均斉度がよくなる。(Function) Since the light projecting device of the present invention has multiple stages of side reflectors, the light is not concentrated and distributed, but the multiple stages of side reflectors expand the light distribution in the horizontal direction and increase the central luminous intensity. This improves the uniformity of light without causing uneven light distribution.

（実施例） 本発明の一実施例の作用を説明する。(Example) The operation of one embodiment of the present invention will be explained.

１は軸方向に長い光源で、例えば、メタルハライドラン
プまたは高圧ナトリウムランプなどが用いられる。Reference numeral 1 denotes a light source that is long in the axial direction, such as a metal halide lamp or a high-pressure sodium lamp.

また２は照射開口部３を下面にし前記光源１を内包した
反射体で、この反射体２は、前記光源１の軸方向と直交
する断面において主反射板部４と、前側反射板部５を有
し、この主反射板部４と前側反射板部５の両端を結ぶ面
のおよび両側面反射板部６，６とにて画状に形成されて
いる。Further, reference numeral 2 denotes a reflector that includes the light source 1 with the irradiation opening 3 facing downward, and this reflector 2 has a main reflector part 4 and a front reflector part 5 in a cross section perpendicular to the axial direction of the light source 1. It is formed into a picture-like shape by the surface connecting the main reflector part 4 and both ends of the front reflector part 5 and the both side reflector parts 6, 6.

前記反射体２は、光軸Ｐを略４０’前方に向けられてい
る。The reflector 2 has its optical axis P directed approximately 40' forward.

そして前記反射体２の主反射板部４は前記光源１から前
記照射開口部３に向かう鉛直線と光源１から開口部３の
後側縁を結ぶ線となす角度θ。The main reflecting plate portion 4 of the reflector 2 forms an angle θ between a vertical line from the light source 1 toward the irradiation opening 3 and a line connecting the rear edge of the opening 3 from the light source 1.

が４０°〜４５°から始り角度θ２が約１５０〜１６０
゜の範囲に放物線面に形成されている。starts from 40° to 45° and angle θ2 is about 150 to 160
It is formed into a parabolic surface in the range of .

またこの主反射板部４の前端に連なる前記前側反射板部
５は、４つの反射板部７，８，９．１０を有している。Further, the front reflector section 5 that is connected to the front end of the main reflector section 4 has four reflector sections 7, 8, 9, and 10.

そして、前記主反射板４に段部１１を介して連なる第１
の反射板部７は、放物線面に形成され、前記光源１から
角度θ３が約２０°〜２５°の範囲で前記光軸Ｐに対し
て傾き角度θ４は約４５°となっている。Then, a first
The reflecting plate portion 7 is formed into a parabolic surface, and has an inclination angle θ4 of about 45° with respect to the optical axis P within a range of an angle θ3 of about 20° to 25° from the light source 1.

また前記第１の反射板部７の前側に連なる第２の反射板
部８は平面状面に形成され、光源１からの角度θ、が約
１６°〜２００の範囲で前記光軸Ｐに対して傾き角度θ
６は約３０°となっている。Further, the second reflecting plate part 8 connected to the front side of the first reflecting plate part 7 is formed in a planar surface, and the angle θ from the light source 1 is in the range of about 16° to 200° with respect to the optical axis P. Tilt angle θ
6 is approximately 30°.

さらにこの第２の反射板部８の前側に連なる第３の反射
板部９は、放物線面に形成され、光源１からの角度θ７
は約８°〜１０°の範囲で前記光軸Ｐに対して傾き角度
θ８は約１５５°となっている。Furthermore, a third reflecting plate part 9 connected to the front side of this second reflecting plate part 8 is formed in a parabolic surface, and is formed at an angle θ7 from the light source 1.
is in the range of about 8° to 10°, and the tilt angle θ8 with respect to the optical axis P is about 155°.

この第３の反射板部９の前側に連なる第４の反射板部１
０は平面状面に形成され、光源１から角度θ、は約３０
°の範囲で前記光＠Ｐと略平行となっている。A fourth reflector section 1 continues in front of this third reflector section 9.
0 is formed on a planar surface, and the angle θ from the light source 1 is approximately 30
It is approximately parallel to the light @P in the range of .

１２はルーバー片のような平面状補助反射板で、前記反
射体２内の前部に光軸Ｐと略平行で光源１から照射開口
面３の前側縁を結ぶ線上から始まり、照射開口面３まで
形成され、光源１から照射開口面３の前側縁を結ぶ線と
光源１から平面状補助反射板１２の照射開口側端部を結
ぶ線とのなす角度θ、。は略２０°となっている。そし
てこの補助反射板１２は上面側が非反射面とし下面側を
反斜面に形成されている。Reference numeral 12 denotes a planar auxiliary reflecting plate such as a louver piece, which is placed on the front part of the reflector 2, starting from a line that is approximately parallel to the optical axis P and connecting the light source 1 to the front edge of the irradiation aperture surface 3; The angle θ between the line connecting the light source 1 to the front edge of the irradiation aperture surface 3 and the line connecting the light source 1 to the end of the planar auxiliary reflector 12 on the irradiation aperture side. is approximately 20°. The auxiliary reflecting plate 12 has a non-reflecting surface on its upper surface and a reverse slope on its lower surface.

また１３．１３は側面補助反射板で、前記側面反射板部
６，６の略中央部から後側に向かって内側に水平方向に
傾斜した角度θ、２が５°〜７°でかつ上側に向かって
内側に垂直方向に傾斜した角度θ、３が１０’〜１５’
で、内側に向かって例えば、１０°、１２°、１３°　
１５°と傾斜角度θ１．を広げ、この両側面補助反射板
１３．１３は前側から後方に向かって例えば２段または
４段の複数段に形成されている。Further, reference numeral 13.13 denotes a side auxiliary reflector, and the angle θ, 2, which is horizontally inclined inward from the approximate center of the side reflector parts 6, 6 toward the rear side, is 5° to 7°, and The angle θ, which is vertically inclined inward, is 10' to 15'.
For example, 10°, 12°, 13° toward the inside.
15° and inclination angle θ1. The both-side auxiliary reflecting plates 13.13 are formed in a plurality of stages, for example, two or four stages, from the front side to the rear.

また前記反射体２は下面に開口した器具本体１４に組込
まれ、この器具本体１４の下面開口部には前記反射体２
の照射開口部３に対向して全面ガラス１５が設けられて
いる。Further, the reflector 2 is incorporated into a device main body 14 having an opening on the lower surface, and the reflector 2 is installed in the lower surface opening of the device main body 14.
A full-face glass 15 is provided opposite the irradiation opening 3.

次にこの実施例の作用を説明する。Next, the operation of this embodiment will be explained.

光源１から放射された光束は主反射板部４と補助反射板
１２とにより中心光度が高められ、下方配光の乱れがな
く、また放物線面と平面状面とを交互に配設した前側反
射板部５および下面側を反射面とした補助反射板１２に
よって均斉度のよい配光が得られ、さらに補助反射板１
２は上面側を非反射面としたことにより上方への配光が
遮断され、グレアを生じさせない。The luminous flux emitted from the light source 1 has a central luminous intensity increased by the main reflector 4 and the auxiliary reflector 12, and there is no disturbance in the downward light distribution, and front reflection is achieved by alternating parabolic and planar surfaces. A well-balanced light distribution is obtained by the plate portion 5 and the auxiliary reflector 12 whose lower surface is a reflective surface, and the auxiliary reflector 1
No. 2 has a non-reflective surface on the upper surface side, thereby blocking upward light distribution and causing no glare.

また側面反射板部６．６の略中央部から後側に向かって
内側に水平方向に傾斜されるとともに上側に向かって内
側に垂直方向に傾斜された複数段の両側面補助反射板１
３．１３により、光軸Ｐ位置で左右の拡がりが大きくな
り、水平配光における中央光度が高まり、配光の均斉度
がよくなり、配光むらがなくなる。Also, a plurality of stages of both side auxiliary reflectors 1 are inclined horizontally inward toward the rear from approximately the center of the side reflector portion 6.6, and vertically inclined inward toward the upper side.
3.13, the horizontal spread at the optical axis P position increases, the central luminous intensity in horizontal light distribution increases, the uniformity of light distribution improves, and unevenness in light distribution is eliminated.

発明者の実験によれば、第６図に示すように、垂直配光
の下方配光特性Ｃおよび上方配光特性ｄは中央光度が１
６００ｃｄ／　１０００Ａｔ　ｍと従来装置に比して高
光度となり、下方配光特性Ｃに凹凸の乱れがなく、理想
配光特性ａに近似した配光が得られる。According to the inventor's experiments, as shown in FIG. 6, the vertical light distribution downward light distribution characteristic C and upward light distribution characteristic d have a central luminous intensity of
The luminous intensity is 600 cd/1000 Atm, which is higher than that of the conventional device, and there is no irregularity in the downward light distribution characteristic C, and a light distribution close to the ideal light distribution characteristic a can be obtained.

また水平配光特性ｅは、は従来の装置の配光特性ｆに比
べて中央光度が高められ、配光むらがなくなったことを
確認できた。In addition, it was confirmed that the horizontal light distribution characteristic e had a higher center luminous intensity than the light distribution characteristic f of the conventional device, and that uneven light distribution was eliminated.

そして１０％程度の光度向上が確認され、設置灯数が低
減できることになる。It was confirmed that the luminous intensity improved by about 10%, which meant that the number of installed lights could be reduced.

〔発明の効果〕〔Effect of the invention〕

本発明によれば、反射体は、両側面反射板部の内側にこ
の側面反射板部の略中央部から後側に向かって内側に水
平方向に傾斜するとともに上側に向かって内側に垂直方
向に傾斜し複数段面に分割した側面補助反射板を配設し
たので、側面反射板部が複数段のため、集光配光となら
ず、複数段の側面反射板部が水平方向の配光を拡げると
ともに、中央光度が高められ、配光むらが生じることな
く、光の均斉度がよくなるものである。According to the present invention, the reflector is provided on the inside of the both side reflector portions from approximately the center of the side reflector portions to be inclined inward in a horizontal direction toward the rear side and vertically inward toward the upper side. Since the auxiliary side reflector plate is tilted and divided into multiple stages, the side reflector part has multiple stages, so light is not concentrated and distributed, but the multi-stage side reflector part distributes light in the horizontal direction. As the light is expanded, the center luminous intensity is increased, and the uniformity of light is improved without uneven light distribution.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の一実施例を示す投光装置の縦断側面図
、第２図は同上反射体の斜視図、第３１・・光源、２・
・反射体、３・・照射開口部、 側面反射板部、 １３・ 側面補助反射板。 平成元年７月３ 日 発 者 大 橋 秀 治Fig. 1 is a vertical sectional side view of a light projecting device showing an embodiment of the present invention, Fig. 2 is a perspective view of the same reflector, Fig. 31... light source, 2...
・Reflector, 3. Irradiation opening, side reflector part, 13. Side auxiliary reflector. Issued on July 3, 1989 by Hideharu Ohashi

Claims (1)

【特許請求の範囲】[Claims] （１）軸方向に長い光源と、この光源を内包し照射開口
部を下面に形成した反射体とを具備し、前記反射体は、
両側面反射板部の内側にこの側面反射板部の略中央部か
ら後側に向かって内側に水平方向に傾斜するとともに上
側に向かって内側に垂直方向に傾斜し複数段面に分割し
た側面補助反射板を配設したことを特徴とする投光装置
。(1) A light source that is long in the axial direction, and a reflector that includes the light source and has an irradiation opening formed on its lower surface, the reflector comprising:
Inside the side reflector part, there is a side auxiliary surface which is divided into a plurality of steps, which is inclined inward horizontally from the approximate center of the side reflector part toward the rear side and vertically inwardly towards the upper side. A floodlight device characterized by having a reflector provided.