JPS6193502A - Indirect lighting fixture - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は間接照明器具の改良に関し、特に被照射面の四
囲の均一化を図り、かつ左右画側の反射体からの反射光
を有効に利用することのできる構造に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to the improvement of indirect lighting equipment, and particularly to the improvement of indirect lighting equipment, and in particular, to uniformity of the surrounding area of the illuminated surface and effective use of the reflected light from the reflectors on the left and right sides. Concerning structures that can be utilized.

〔従来の技術とその問題点〕[Conventional technology and its problems]

従来光源の光の影響を受けやすい印刷関係の職場あるい
は学校や図書館の集会場等に間接照明器具を使用し、光
源の直射光をカットし、印刷関係の職場においては光の
影響をできる限シ少なくし、学校や図書館の集会場にお
いてはソフトな照明空間を得ることが行われている。Conventionally, indirect lighting equipment is used in printing-related workplaces that are easily affected by light from light sources, as well as gathering places in schools and libraries, to cut direct light from light sources, and to reduce the influence of light as much as possible in printing-related workplaces. At the same time, soft lighting spaces are being created in gathering spaces such as schools and libraries.

従来一般の間接照明器具は上面に透光窓を有する箱形の
照明器具本体の内部に、内面を全体的に白色塗装するか
あるいは内面を全体的に鏡面とした反射体を収納し、同
反射体の内部空間に位置して長尺状の光源を装着して構
成し、例えば建物の天井面等に一定の空間を有して固定
し、光源からの光を天井面に投射することが行われてい
る。Traditionally, general indirect lighting equipment has a box-shaped lighting equipment body with a transparent window on the top surface, and has a reflector that is either painted white on the inside or has a mirror finish inside, and houses a reflector inside the box-shaped lighting equipment body that has a translucent window on the top surface. It is constructed by attaching a long light source located in the internal space of the body, and is fixed to the ceiling of a building with a certain space, for example, so that the light from the light source can be projected onto the ceiling. It is being said.

しかし同構造において、内面を全体的に白色塗装した反
射体を用いると反射光が散光し、直射光と併せると被照
射面の照度は中央と周辺部が不均一となる欠点がある。However, in the same structure, if a reflector whose inner surface is entirely painted white is used, the reflected light will be scattered, and when combined with direct light, the illuminance of the irradiated surface will be uneven between the center and the periphery.

また内面を全体的に鏡面とした反射体を用いると、一度
反射体に投射した光が光源に反射して戻る割合が高く反
射光の利用度が低い欠点がある。Further, when a reflector whose inner surface is entirely mirror-finished is used, there is a drawback that the ratio of light once projected onto the reflector is reflected back to the light source is high, and the utilization of the reflected light is low.

〔発明の目的〕[Purpose of the invention]

本発明は上記の点に鑑み発明したもので、側部反射体か
らの反射光の有効利用を図り、被照射面の照度を上げ且
つ均一な照度を得ることのできる間接照明器具を提供す
ることを目的とする。The present invention was invented in view of the above points, and an object of the present invention is to provide an indirect lighting fixture that can effectively utilize the reflected light from the side reflector, increase the illuminance of the irradiated surface, and obtain uniform illuminance. With the goal.

〔発明の構成〕[Structure of the invention]

以下本発明を第１図および第２図について説明する。図
において、１は上面に透光窓２を有する箱形の照明器具
本体、３は照明器具本体１の内部に固定したソケット、
４はソケット３に装着した長尺状の光源であって、例え
は螢光ランプ、５は照明器具本体１の内部に支持してな
る反射体であって、底部内表面は例えば白色塗装して散
光面とし、また左右両側は内表面を鏡面し、側部反射体
からの反射光が光源に戻らず上方の被照射面に反射する
ように構成しである。The invention will now be described with reference to FIGS. 1 and 2. In the figure, 1 is a box-shaped lighting fixture body with a transparent window 2 on the top surface, 3 is a socket fixed inside the lighting fixture body 1,
4 is a long light source attached to the socket 3, for example a fluorescent lamp; 5 is a reflector supported inside the lighting device body 1; the inner surface of the bottom part is painted white, for example; It has a diffuser surface, and the inner surfaces on both left and right sides are mirror-finished so that the reflected light from the side reflectors does not return to the light source but is reflected onto the irradiated surface above.

また光源４の位置と側部反射体の空間を比較的大きくと
り、側部反射体の反射光が光源に戻らず上方の被照射面
に投射し、コントロールしやすいように構成しである。Further, the space between the position of the light source 4 and the side reflector is relatively large, so that the reflected light from the side reflector does not return to the light source but is projected onto the irradiated surface above, making it easy to control.

さらに光源４の位置は反射体５の上端部と水平が若干低
く構成し、被照射面に対し光を有効に投射し、かつ側部
から視認した場合グレア−を感じないように構成しであ
る。Furthermore, the light source 4 is positioned slightly lower horizontally than the upper end of the reflector 5, so as to effectively project light onto the irradiated surface and to prevent glare when viewed from the side. .

例えば反射体５の横幅１４ａｎ、深さ５．５錆とした場
合、光源４と側部反射体の内壁までの間隔は左右に各々
５．５ｃｎ１程度とし、また光源４の上端は反射体５の
上端と略々水平になるように構成しである。For example, if the reflector 5 has a width of 14 an and a depth of 5.5 cm, the distance between the light source 4 and the inner wall of the side reflector is about 5.5 cn1 on each side, and the upper end of the light source 4 is It is configured to be approximately horizontal with the upper end.

また間接照明器具は例えば第２図に示すように４台を連
結体６で角形に組合せ、例えば建物の天井面との間隔を
約５０ｃｒＲとり吊シ下げ実施する。Furthermore, as shown in FIG. 2, for example, four indirect lighting fixtures are combined into a rectangular shape using a connecting body 6, and are hung with a distance of about 50 crR from the ceiling of the building, for example.

〔発明の作用〕[Action of the invention]

次に上記した間接照明器具の作用について説明する。 Next, the operation of the above-mentioned indirect lighting equipment will be explained.

照明器具本体１の光源４を点灯すると、光源４から反射
体の底部に投射した光は全体的に散光し被照射面に投射
し、また側部反射体からの反射光は第１図に示すように
側部上方の被照射面に反射するので、光源からの直射光
と併せ被照射面の照度は全体的に均一化する。また側部
反射体の反射光は光源４に戻らプＣいので反射光を効果
的に利用し得る。When the light source 4 of the lighting fixture body 1 is turned on, the light projected from the light source 4 to the bottom of the reflector is scattered and projected onto the irradiated surface, and the reflected light from the side reflector is shown in Figure 1. Since the light is reflected on the irradiated surface above the side portion, the illuminance of the irradiated surface becomes uniform as a whole in combination with the direct light from the light source. Further, since the reflected light from the side reflectors is not returned to the light source 4, the reflected light can be effectively utilized.

〔発明の効り、〕[Efficacy of invention,]

本発明は上記したように、反射体の底部内表面を散光面
とし、左右両１ｉ１１面の内表面を鏡面とし、側部反射
体からの反射光が光源にｒらず側部上方の被照射面に反
射するように構成した間接照明器具でちるので、上述の
ごとく、反射体底部の反射光は全体的に散光し、また反
射体側部からの反射光は被照射面のツ１１部上方を中心
に反射するので、直射光と併せると被照射面の照度の均
一化を図ることができ、さらに反射体側部からの反射光
は光已に戻らず光の有効利用を図り被茜躬面の照度を上
げることができる利点がある。As described above, the present invention has the bottom inner surface of the reflector as a light diffusing surface, and the inner surfaces of both the left and right surfaces as mirror surfaces, so that the reflected light from the side reflector does not reach the light source and is irradiated on the upper side of the reflector. Since it is an indirect lighting device configured to reflect light on a surface, as mentioned above, the reflected light from the bottom of the reflector is scattered throughout, and the reflected light from the side of the reflector is reflected from above the irradiated surface. Since it is reflected at the center, when combined with direct light, it is possible to equalize the illuminance of the irradiated surface.Furthermore, the reflected light from the side of the reflector does not return to the light beam, making effective use of the light. It has the advantage of increasing illuminance.

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

第１図は本発明に係る間接照明器具の側部ヒリ［面図、
第２図は第１図の間接口開器具を複数組合せたときの実
施例図である。FIG. 1 shows a side view of an indirect lighting device according to the present invention.
FIG. 2 is a diagram showing an embodiment in which a plurality of the indirect ostium opening instruments shown in FIG. 1 are combined.

Claims (1)

【特許請求の範囲】 上面に透光窓（２）を有する箱形の照明器具本体（１）
の内部に反射体（５）を装着し、同反射体（５）の内部
空間に位置して長尺状の光源（４）を装着する構造にお
いて、 前記反射体（５）の底部内表面を散光面とした反射体で
構成すると共に同反射体（５）の左右両側面は内表面を
鏡面とした反射体で構成し、且つ側部反射体からの反射
光が光源（４）に戻らず側部上方の被照射面に反射する
ように構成したことを特徴とする間接照明器具。[Claims] A box-shaped lighting fixture body (1) having a transparent window (2) on the top surface
In a structure in which a reflector (5) is installed inside the reflector (5) and a long light source (4) is installed located in the internal space of the reflector (5), the bottom inner surface of the reflector (5) is It is composed of a reflector with a diffused light surface, and both left and right sides of the reflector (5) are composed of reflectors with mirrored inner surfaces, and the reflected light from the side reflectors does not return to the light source (4). An indirect lighting device characterized by being configured to reflect light on a surface to be illuminated above the side.