JPS5944702A - Illuminator - Google Patents
IlluminatorInfo
- Publication number
- JPS5944702A JPS5944702A JP15628182A JP15628182A JPS5944702A JP S5944702 A JPS5944702 A JP S5944702A JP 15628182 A JP15628182 A JP 15628182A JP 15628182 A JP15628182 A JP 15628182A JP S5944702 A JPS5944702 A JP S5944702A
- Authority
- JP
- Japan
- Prior art keywords
- light
- prism
- rectangular
- transmitting cover
- pattern
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Optical Elements Other Than Lenses (AREA)
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】
〔発明の技術分野〕
本発明は′器具本体の投光開口に曙光カバーを配設して
なる照明器具の改良に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an improvement in a lighting device in which a dawn cover is provided in a light projection opening of the device body.
天井面に埋込んで用いられるダウンライト器具は一般に
器具本体が円筒状あるいは四角形状に形成され、その投
光開口に円形状または四角形状の透光カバーを配設して
なっている。A downlight fixture that is used by being embedded in a ceiling surface generally has a cylindrical or square-shaped fixture body, and a circular or square-shaped light-transmitting cover is disposed over the light projection opening.
したがって、円筒形器具においては透光カパーを透過し
て照射されるパターンは円形状となり、また、四角形状
の器具においては照射パターンが四角形状となっている
。Therefore, in the case of a cylindrical instrument, the irradiation pattern transmitted through the transparent cover is circular, and in the case of a rectangular instrument, the irradiation pattern is square.
し７たがって、円筒状の器具が設置されている場合、角
形の照射パターンを得たいときは器具を四角形状のもの
に変える必要があり、そのための工事が必要となる。Therefore, if a cylindrical device is installed and you want to obtain a rectangular irradiation pattern, it is necessary to change the device to a rectangular one, which requires construction work.
このようなことから、円形状の透光カバーで四角形状の
照射パターンが得られるようにしたものに複数に分割さ
れ隣接する区画のプリズムパターンを互いに配光の最大
ビーム角が異なるプリズム面で形成したものが提案され
ている。For this reason, a circular light-transmitting cover is used to obtain a rectangular irradiation pattern, which is divided into multiple sections, and the prism patterns in adjacent sections are formed using prism surfaces with different maximum beam angles of light distribution. has been proposed.
このものは、複数のプリズムパターンを互いに配光の最
大ビーム角を異ならせて形成しているので、円形状の透
光カバーで角形の照射パターンとなり、角形配光が得ら
れるととが確認されたが、各プリズム面の設定角度が正
方形部の角度と近似しているため、照射パターンに丸味
が生じ、充分な角皿パターンがイ！）もれない不都合が
あり、いま−歩の改良が望まれていた。This product has multiple prism patterns formed with different maximum beam angles of light distribution, so it has been confirmed that a circular transparent cover creates a square irradiation pattern and that a square light distribution can be obtained. However, since the set angle of each prism surface is similar to the angle of the square part, the irradiation pattern becomes rounded and a sufficient square plate pattern is not possible! ) There were certain inconveniences, and improvements were desired.
本発明は上述の事情を考慮してなされたもので、円板状
の祷光カバーで、方形状の均斉度のよい角形照射パター
ンが得られる照明器具を提供することを目的とする、
〔発明の概要〕
本発明は器具本体の投光開口に配設される透光カバ、−
を円板状に形成するとともに、板面中央部から放射方向
に４分割して外周縁と内接する方形状の輪郭で複数のプ
リズム部からなυ角゛照パターンを形成する４区画の方
形状プリズム面を形成し、かつ、この方形状プリズム面
の外周縁に上記ブリする円弧形状の７リズム面を形成し
たこ七を特徴とする。The present invention has been made in consideration of the above-mentioned circumstances, and an object of the present invention is to provide a lighting fixture that can obtain a rectangular illumination pattern with good uniformity using a disc-shaped light cover. [Summary] The present invention provides a light-transmitting cover disposed in a light projection opening of a device main body, -
is formed into a disk shape, and is divided into four parts in the radial direction from the center of the plate surface, and has a rectangular outline that is inscribed with the outer periphery and forms a υ angle illumination pattern with a plurality of prism parts. This device is characterized by forming a prism surface and forming the above-mentioned curved arc-shaped seven rhythm surfaces on the outer peripheral edge of the square prism surface.
本発明の詳細を図示の一実施例を参照して説明する６第
１図において、１はたとえば埋込形ダウンライトの器具
本体で、頂部に設けたソケット２に装着したランプ３を
内包している。この器具本体１はたとえば円筒形状に形
成され、この器具本体１の下面に投光開口４が形成され
、この投光開口４を覆って透光カバー５が配設されてい
る。Details of the present invention will be explained with reference to an illustrated embodiment.6 In Fig. 1, reference numeral 1 denotes a fixture body of, for example, a recessed downlight, which includes a lamp 3 attached to a socket 2 provided at the top. There is. The instrument main body 1 is formed, for example, in a cylindrical shape, and a light emitting opening 4 is formed in the lower surface of the instrument main body 1, and a light transmitting cover 5 is disposed to cover the light emitting opening 4.
この透光カバー５は円板状に形成され、板面中央部から
放射方向に４分割され外周縁６と内筈される方形たとえ
ば正方形の輪郭７で形成される４区画のプリズムパター
ン８，９，１０．１１で角皿パターンを形成する複数の
プリズム部１２．１２・・・ からなる方形状のプリズ
ム面１３が形成されている。This light-transmitting cover 5 is formed into a disk shape, divided into four parts in the radial direction from the center of the plate surface, and has four sections of prism patterns 8 and 9 formed by an outer peripheral edge 6 and a rectangular, for example, square outline 7. , 10, 11, a rectangular prism surface 13 is formed of a plurality of prism portions 12, 12, . . . forming a rectangular plate pattern.
さらに、この透光カバー５の外周縁６に上記プリズム部
１２．１２・・・と交叉する方向に形成された複数のプ
リズム部１４．１４からなり前記方形状のプリズム面１
３で形成される角皿パターン′の隅角部を照射する円弧
状のプリズム面１５が形成されている。Further, the rectangular prism surface 1 is made up of a plurality of prism parts 14.14 formed on the outer peripheral edge 6 of the transparent cover 5 in a direction intersecting with the prism parts 12.12...
An arcuate prism surface 15 is formed to illuminate the corner portion of the rectangular plate pattern '3.
そして、第３図に示すように、たとえば前記方１２４．
１２□１２６のｌ１１１斜角θ１を３度、外側のプリズ
ム部！２γ、１２８，１２９の傾ｆ１角θ２を１０度と
し、これらの方形プリズム部１２と交叉する方向に形成
された円弧状プリズム面１５のプリズム部１−４の傾斜
角θ３は１４＋ 、１４ｔ 、 １４３を１０度、１０
．を２３度とし、方形状のプリズム面１２の出射角ψ１
．ψ。For example, as shown in FIG.
12□126 l111 oblique angle θ1 is 3 degrees, outer prism part! The inclination f1 angle θ2 of 2γ, 128, 129 is 10 degrees, and the inclination angle θ3 of the prism portion 1-4 of the arcuate prism surface 15 formed in the direction intersecting these square prism portions 12 is 14+, 14t, 143 10 degrees, 10
．． is 23 degrees, and the output angle ψ1 of the rectangular prism surface 12 is
．． ψ.
を円弧状プリズム面１４の出射角ψ、より小さく形成し
ている。is made smaller than the exit angle ψ of the arcuate prism surface 14.
つぎに、この実施例の作用について欣、明するう器具本
体１内のランプ３から放射される光は透光カバー５の方
形プリズム面１３および円弧状プリズム面１５によって
制御され、方形プリズム面１３を透過した光はほぼ正方
形状の角皿パターンとなって床面を照射し、また円弧状
のプリズム面１５を透過した光は前記角皿パターンの隅
角部を照射し、床面にほぼ正四角形状の配光・パターン
が得られる。Next, we will explain the operation of this embodiment.The light emitted from the lamp 3 in the device main body 1 is controlled by the rectangular prism surface 13 and the arcuate prism surface 15 of the transparent cover 5. The light transmitted through the rectangular plate pattern becomes a substantially square plate pattern and illuminates the floor surface, and the light transmitted through the arc-shaped prism surface 15 illuminates the corners of the rectangular plate pattern and illuminates the floor surface almost squarely. A rectangular light distribution/pattern can be obtained.
すなわち、方形状のプリズム面１３の各ブリズム部１２
．〜１２．を透禍した光は第４図に示すように、曲線■
に示す照度分布となり、円弧状のプリズム面１５のプリ
ズム部１４を透過した光は曲線Ｈに示す照度分布となり
、とれら曲線１．１１を合成した全体の照度が曲線■に
示す照度分布となり、均斉度が向上したよシ角張った角
皿パターンが得られる。That is, each prism portion 12 of the rectangular prism surface 13
．． ~12. As shown in Figure 4, the light that penetrates the
The light transmitted through the prism part 14 of the arc-shaped prism surface 15 becomes the illuminance distribution shown in curve H, and the total illuminance obtained by combining these curves 1.11 becomes the illuminance distribution shown in curve ■. A square dish pattern with improved symmetry can be obtained.
本発明を上述の実施例について説明したが、本発明はこ
れに限定されるものではない。たとえば第５図に示すよ
うに、゛方形プリズム面は長四角形状に形成したもので
あってもよい。この場合は長四角形状の角皿パターンと
なる。なお、第５図において、上記実施例と同一部分は
同一符号を付して説明は省略する。Although the present invention has been described with respect to the above embodiments, the present invention is not limited thereto. For example, as shown in FIG. 5, the rectangular prism surface may be formed into a rectangular shape. In this case, the pattern becomes a rectangular plate pattern. In FIG. 5, the same parts as in the above embodiment are given the same reference numerals, and the explanation thereof will be omitted.
また、器具本体１は角筒形のものであっても透〔発明の
効果〕
以上詳述したように、本発明は器具本体の投光開口に配
設される透光カバーを円板状に形成し、かつ、板面の中
央部から放射方向に４分割し、て外周縁と内接する形状
の輪郭で４区画の方形プリズム面を形成し、かつ、この
方形プリズム面の外周に方形プリズム向のプリズム部と
交叉する方向に形成したプリズム部からなる円弧状のプ
リズム面を形成したので、方形プリズム面でほぼ角皿パ
ターンを形成、シ、かつ円弧状プリズム面で角皿パター
ンの隅角部を放射し、隅角部が明確となる角皿パターン
が得られる。Further, even if the main body 1 of the device is in the shape of a rectangular tube, it is transparent. [Effects of the Invention] As described in detail above, the present invention provides a disc-shaped light-transmitting cover disposed at the light projection opening of the main body of the device. The plate surface is divided into four parts in the radial direction from the center of the plate surface, and a rectangular prism surface of four sections is formed by a contour of a shape that is inscribed with the outer peripheral edge, and a rectangular prism direction is formed on the outer periphery of the rectangular prism surface. Since we formed an arc-shaped prism surface consisting of prism parts formed in a direction that intersects with the prism part of A square dish pattern with clear corners can be obtained.
第１図は本発明の一実施例を示す照明器具の一部を切欠
いた正面図、第２図は同じく透光カバーの平面図、第３
図は同じく第２図のＩＶ −ＩＶ線に沿って断面した拡
大説明図、第４図は同じく角皿パターン内の照度分布図
、第５図は本発明の他の実施例を示ず透光カバーの平面
図である。
１・・・器具本体 ３・・・ランプ ４・・・投光
開口５・・・透光カバー １３・・・方形状プリズ
ム面１５・・・円弧形状プリズム面FIG. 1 is a partially cutaway front view of a lighting fixture showing one embodiment of the present invention, FIG. 2 is a plan view of the transparent cover, and FIG.
The figure is an enlarged cross-sectional view taken along line IV-IV in Figure 2, Figure 4 is an illuminance distribution diagram within the square dish pattern, and Figure 5 is a transparent diagram showing another embodiment of the present invention. FIG. 3 is a plan view of the cover. 1... Appliance body 3... Lamp 4... Light emitting opening 5... Light-transmitting cover 13... Rectangular prism surface 15... Arc-shaped prism surface
Claims (1)
、 この器具本体の投光開口を覆って配設された透光カバー
と、 を具備し、 上記透光カバーは円板状をなし、板面中央部から放射方
向に４分割されこの透光カバーの外周縁と内接する方形
状の輪郭で区画される４区画のプリズムパターンで角皿
パターンを形成する複数のプリズム部からなる方形状の
プリズム面と、 この方形状のプリズム面の外周縁に上記プリズム部対角
線と交叉する方向に形成された複数のプリズム部からな
り上記角皿パターンの９部を照射する円弧形状のプリズ
ム面と、を含んで形成されていることを特徴とする照明
器具。 （２） 前記透光カバーの方形プリズム面は透光カバ
ーの外周縁に内接する正方形状に形成されていることを
特徴とする特許請求の範囲（１）記載の照明器具。 （３）前記透光カバーの方形プリズム面は透光カバーの
外周縁に内接する長方形状に形成されていることを特徴
とする特許請求の範囲（１）記載の照明器具。[Claims] (Claims: an IJ lamp, an instrument body containing the lamp and having a light emitting opening on the lower surface, and a light-transmitting cover disposed to cover the light emitting opening of the instrument body; The light-transmitting cover has a disk shape, is divided into four parts in the radial direction from the center of the plate surface, and has a corner formed by a four-section prism pattern defined by a rectangular outline inscribed with the outer periphery of the light-transmitting cover. A rectangular prism surface consisting of a plurality of prism parts forming a dish pattern, and a plurality of prism parts formed on the outer periphery of the rectangular prism face in a direction intersecting the diagonal line of the prism part forming the square dish pattern. (2) The rectangular prism surface of the light-transmitting cover has a square shape inscribed in the outer periphery of the light-transmitting cover. (3) The rectangular prism surface of the light-transmitting cover is formed in a rectangular shape inscribed in the outer periphery of the light-transmitting cover. A lighting fixture according to claim (1), characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15628182A JPS5944702A (en) | 1982-09-08 | 1982-09-08 | Illuminator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15628182A JPS5944702A (en) | 1982-09-08 | 1982-09-08 | Illuminator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5944702A true JPS5944702A (en) | 1984-03-13 |
Family
ID=15624387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15628182A Pending JPS5944702A (en) | 1982-09-08 | 1982-09-08 | Illuminator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5944702A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59173902A (en) * | 1983-03-19 | 1984-10-02 | 東芝ライテック株式会社 | Illuminator |
| WO2013108509A1 (en) * | 2012-01-18 | 2013-07-25 | コニカミノルタ株式会社 | Auxiliary light source unit, optical element, and mobile electronic device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3502865A (en) * | 1967-07-13 | 1970-03-24 | Guth Co Edwin F | Luminaire |
-
1982
- 1982-09-08 JP JP15628182A patent/JPS5944702A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3502865A (en) * | 1967-07-13 | 1970-03-24 | Guth Co Edwin F | Luminaire |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59173902A (en) * | 1983-03-19 | 1984-10-02 | 東芝ライテック株式会社 | Illuminator |
| WO2013108509A1 (en) * | 2012-01-18 | 2013-07-25 | コニカミノルタ株式会社 | Auxiliary light source unit, optical element, and mobile electronic device |
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