JPS5956303A - Illuminator - Google Patents

Illuminator

Info

Publication number
JPS5956303A
JPS5956303A JP16711082A JP16711082A JPS5956303A JP S5956303 A JPS5956303 A JP S5956303A JP 16711082 A JP16711082 A JP 16711082A JP 16711082 A JP16711082 A JP 16711082A JP S5956303 A JPS5956303 A JP S5956303A
Authority
JP
Japan
Prior art keywords
light
light source
outward
center
approximately
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.)
Granted
Application number
JP16711082A
Other languages
Japanese (ja)
Other versions
JPH0142081B2 (en
Inventor
光治 佐藤
茂 岡田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Electric Equipment Corp
Toshiba Denzai KK
Original Assignee
Toshiba Electric Equipment Corp
Toshiba Denzai KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Electric Equipment Corp, Toshiba Denzai KK filed Critical Toshiba Electric Equipment Corp
Priority to JP16711082A priority Critical patent/JPS5956303A/en
Publication of JPS5956303A publication Critical patent/JPS5956303A/en
Publication of JPH0142081B2 publication Critical patent/JPH0142081B2/ja
Granted legal-status Critical Current

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〕 本発明は照明器具に係り、特に灯体の下面を覆い光源か
ら照射された光を制御する透光性カバーの構造に関する
DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to lighting equipment, and particularly to the structure of a translucent cover that covers the lower surface of a lamp body and controls light emitted from a light source.

〔発明の技術的背景〕[Technical background of the invention]

オニ図に示すように造営物の天井面(1)など忙埋込ん
で使用する照明器具(2)では、光源からの光は灯体の
下面からのみ射出されることになる。このため、灯体の
下面に複数条プリズムを形成するかまたは梨地状に形成
した透明ガラス板からなる透光性カバーを設け、この透
光性カバーにて光源からの光を照明器具(2)の直下方
向だけでなく周囲へ照射するように制御させていた。
As shown in the diagram, in a lighting fixture (2) that is used by being embedded in the ceiling (1) of a structure, the light from the light source is emitted only from the bottom of the lamp body. For this reason, a translucent cover made of a transparent glass plate formed with multiple prisms or a matte finish is provided on the lower surface of the lamp body, and this translucent cover allows the light from the light source to pass through the lighting fixture (2). It was controlled so that the light was emitted not only directly below, but also around the area.

〔背景技術の問題点〕[Problems with background technology]

しかしながら、このような透光性カバーを用いた照明器
具(2)では、才1図に示すように配光特性曲線囚が路
上下方向に長いだ円形となり、光の照射方向が直下方向
から90″まで全体に広がるためグレアが生じ、不快感
を生むとともに、実際の照明に役だつほどの光の射出角
度(r)は直下方向から20″ないし30°の広がりを
有するのみで照射範囲が狭く、広い範囲を照明するには
多数設けなければならないという不都合を生じる。
However, in the lighting fixture (2) using such a translucent cover, the light distribution characteristic curve becomes an oval shape that is elongated in the downward direction of the road, as shown in Figure 1, and the direction of light irradiation is 90 degrees from the direction directly below. '', which causes glare and discomfort, and the light emission angle (r), which is useful for actual illumination, has a narrow irradiation range of only 20'' to 30 degrees from the direction directly below. In order to illuminate a wide area, a large number of them must be provided, which is an inconvenience.

また、床面(4)の照度分布も曲線■にて示すように照
明器具の直下方向が最も明るく、直下方向から遠ざかる
に従って暗くなり、均一に照明できないという欠点があ
った。
Furthermore, the illuminance distribution on the floor surface (4) is brightest in the direction directly below the lighting fixture, as shown by curve (2), and becomes darker as the distance from the direction directly below increases, resulting in the disadvantage that uniform illumination cannot be achieved.

〔発明の目的〕[Purpose of the invention]

本発明は上記欠点に鍾みなされたもので、照明範囲が広
く、しかもグレアが生じることなく、かつ照度分布も均
一な照明器具を提供できるものである。
The present invention has been made to address the above-mentioned drawbacks, and provides a lighting fixture that has a wide illumination range, does not cause glare, and has a uniform illuminance distribution.

〔発明の概要〕[Summary of the invention]

本発明は灯体の下方からのみ射出される光を透光性カバ
ーの構造を改良して必要な範囲、つまり照明器具の直下
方向から略456かも50’の範囲に制御して導出する
ようにしたものである。そして、このような範囲に光を
制御するためには透光性カバーの形状を従来のように全
面同一とせず、中心部近傍、端部近傍およびこれらの中
間部というように分割し、それぞれの位臂において導出
される光が所定の配光となるように制御するものである
The present invention improves the structure of the translucent cover so that the light emitted only from below the lamp body is controlled and guided within the necessary range, that is, approximately 456 to 50' from directly below the lighting fixture. This is what I did. In order to control the light within such a range, the shape of the translucent cover should not be the same over the entire surface as in the past, but it should be divided into areas near the center, near the edges, and in the middle between these areas. This is to control the light emitted at the armpit to have a predetermined light distribution.

このため本発明では、光源と、この光源を内包しこの光
源からの光を下面開口部より射出する灯体と、この灯体
の下面開口部に配設された透光性カバーとを備えた照明
器具において、前記透光性カバーを、光源から射出され
た光を中心部近傍では鉛直下方より略30°外方に向っ
て、端部近傍では略45″外方に向って、中心部と端部
との中間部では略、40°外方に向って導出する形状の
プリズムにて形成したことを特徴とする構造である。
For this reason, the present invention includes a light source, a lamp body containing the light source and emitting light from the light source through a lower opening, and a translucent cover disposed in the lower opening of the lamp body. In the lighting equipment, the translucent cover is arranged so that the light emitted from the light source is directed approximately 30 degrees outward from the vertically downward direction near the center, and approximately 45 inches outward from the vertically downward direction near the ends. This structure is characterized in that the intermediate portion between the end portion is formed of a prism shaped to lead outward by approximately 40°.

〔発明の実施例〕[Embodiments of the invention]

次忙本発明の一実施例を53’2図ないしオフ図に基づ
いて説明する。
An embodiment of the present invention will be described based on Figure 53'2 to off-line diagram.

才2図および第3図は照明器具を示す図モ、この図にお
いてαυは天井面の埋込孔に埋込まれる灯体で、下面を
開口した四角形枠状に形成され、上面に係合された図示
しない支柱にて吊下げ支持されている。この灯体αυの
下部には例コ字状に形成され7字ばねα2を用いて灯体
Qllの側面に取付けられた化粧枠aカが設けられてい
る。この灯体αηの上面にはランプ取付孔a4が、また
対向する1対の側wkは錠穴(151が開口されている
Figures 2 and 3 are diagrams showing lighting equipment. In this figure, αυ is a lamp body that is embedded in a hole in the ceiling surface. It is formed in the shape of a rectangular frame with an open bottom, and is engaged with the top surface. It is suspended and supported by a support (not shown). At the lower part of the lamp body αυ, there is provided a decorative frame a which is formed in a U-shape and is attached to the side surface of the lamp body Qll using a 7-shaped spring α2. A lamp mounting hole a4 is provided on the upper surface of the lamp body αη, and a lock hole (151) is provided on a pair of opposing sides wk.

aOはコ字状に形成されたランプ取付枠で、灯体(11
1の上面にランプ取付孔(14)を跨いで固着されてい
る。この取付枠(1eの内面上部にはランプソケットa
ηが、また、外面−側にはスイッチa8が固着されてお
り、これらはリード線αCJkて接続されている。
aO is a U-shaped lamp mounting frame, and the lamp body (11
It is fixed to the top surface of the lamp 1 across the lamp mounting hole (14). The upper part of the inner surface of this mounting frame (1e) has a lamp socket a.
η and a switch a8 are fixed to the outer side, and these are connected by a lead wire αCJk.

(至)は光源としてのたとえば高輝度放電ランプで、ラ
ンプソケットaηに取付けられ、ランプ取付孔a4を介
して灯体側のほぼ中央に配置されている。
(to) is a light source, for example, a high-intensity discharge lamp, which is attached to the lamp socket aη and placed approximately in the center of the lamp body through the lamp attachment hole a4.

QDはガラスなどの透明板材にて形成された透光性カバ
ーで、第4図に示すよ5に四角形のプリズム部(ハ)と
、このプリズム部(財)の周縁に設けられ断面路り字状
の係合縁部(至)とからなり、この係合縁部器を化粧枠
0の内側上級に係合することにより灯体Ql)に取付け
られている。
A QD is a translucent cover made of a transparent plate material such as glass, and as shown in Figure 4, it has a rectangular prism part (C) and a cross-sectional road mark provided around the periphery of this prism part (C). It is attached to the lamp body Ql) by engaging this engaging edge to the upper inner side of the decorative frame 0.

プリズム部02は才4図のVI−Vl断面を示す第6図
からもわかるように上面を平面とし、下面を角度の異な
る鋸歯状の突部(財)を有する形状としている。この突
部r241はプリズム部(至)の中央を中心として対称
に設けられており、それぞれの角度αは第5図に示すよ
うにランプセンター(6)からプリズム部器の上面中心
向までの距離!、を105U、中心口から端縁■までの
距離!、を300鶴とすると、下表の値となる。なお、
このときの突部c2(イ)の番号(It)は中心から端
縁に向って1.2.3−−−−一とする。
As can be seen from FIG. 6, which shows the VI-Vl cross section of FIG. These protrusions r241 are provided symmetrically about the center of the prism part (to), and each angle α is the distance from the lamp center (6) to the center of the upper surface of the prism part, as shown in FIG. ! , is 105U, the distance from the center opening to the edge ■! If , is 300 cranes, the values are shown in the table below. In addition,
At this time, the number (It) of the protrusion c2 (a) is 1.2.3--1 from the center toward the edge.

なお、第4図および才5図はプリズム部(社)の突部Q
4を一部省略したものである。
In addition, Figures 4 and 5 show the protrusion Q of the prism part.
4 is partially omitted.

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

プリズム部(イ)へのランプセンター(へ)からの光の
入射角#3は上記表に示すよ5になる。するとこのプリ
ズム部(イ)の各突部(241からは上記表に示すよう
に、中心部近傍つまりπ冨1〜20の突部(2)では鉛
直下方より30°から34.75°外方に向った配光が
、端部近傍つまりn±51〜60の突部(2)では鉛直
下方より42.50°から44.75’外方に向った配
光が、中間部つまりn xt 21〜50の突部(財)
では鉛直下方より35.00’から42.25°外方に
向った配光が得られることKなる。
The incident angle #3 of the light from the lamp center (a) to the prism part (a) is 5 as shown in the table above. Then, as shown in the table above, each protrusion (241) of this prism part (A) is located near the center, that is, the protrusion (2) with π-thickness 1 to 20, at an angle of 30° to 34.75° outward from the vertically downward direction. In the vicinity of the end, that is, at the protrusion (2) of n±51 to 60, the light distribution is directed outward from 42.50° to 44.75' from the vertically downward direction, whereas in the middle part, that is, n xt 21 ~50 protrusions (goods)
In this case, a light distribution directed outward from 35.00' to 42.25° from the vertically downward direction can be obtained.

このため、この照明器具ではオフ図に示すように配光特
性曲線(4)は45f′から506の広がり角(γ)を
有する逆ハート形となり、光の照射範囲が照明器具(至
)直下方向から456から50’と従来に比べ広くでき
、その上に、床面(4)での照度分布も曲線の)にて示
すように45°から50°の範囲内では略均−となる。
Therefore, in this lighting fixture, the light distribution characteristic curve (4) has an inverted heart shape with a spread angle (γ) of 45f' to 506, as shown in the off-line diagram, and the light irradiation range is directed directly below the lighting fixture. The illuminance distribution on the floor surface (4) is approximately averaged within the range of 45° to 50°, as shown by the curve ().

さらに、配光特性曲線囚かられかるように照明器具から
の光は50f′以上の角度忙はほとんど射出されること
がないため、照明器具からの射出角度が606以上とな
ると生じるグレアも防止することができる。
Furthermore, as can be seen from the light distribution characteristic curve, light from lighting equipment is rarely emitted at an angle of 50f' or more, so glare that occurs when the exit angle from the lighting equipment is 606 or more is also prevented. be able to.

なお、前記実施例においてランプセンターからの光は透
光性カバー〇!lの突部(財)の鉛直下方より42、2
56以上外方には広がることはないのに、配光が45°
から50°となるのは光源であるランプ(イ)が点光源
ではなく大きさをもっているためである。
In addition, in the above embodiment, the light from the lamp center is transmitted through the translucent cover! 42,2 from the vertically below the protrusion (goods) of l
Although it does not spread outward beyond 56 degrees, the light distribution is 45 degrees.
The reason why the angle is 50° is because the light source, the lamp (a), is not a point light source but has a size.

また、ランプ彌から透光性カバー+211方向以外へ射
出された光は灯体C11)にて反射された後、透光性カ
バーQDを介して照明器具(至)の外方へ射出されるた
め、射出角度が直下方向より50″以上となる場合もあ
るが、このような光は反射時に大きく減衰されるためグ
レアを生じさせるほどの強さがない。
In addition, since the light emitted from the lamp holder in a direction other than the translucent cover +211 direction is reflected by the lamp body C11), it is emitted to the outside of the lighting fixture (to) via the translucent cover QD. In some cases, the emission angle is 50'' or more from the direction directly below, but such light is greatly attenuated upon reflection, so it is not strong enough to cause glare.

nsz l〜20の突部e241において射出角度を3
0′′以下にすると器具の直下方向の光が増加してしま
い、オフ図で示した照度分布の曲線(8)の中心部付近
が***してしまい照度の均斉度が低下してしまう。
The injection angle is set to 3 at the protrusion e241 of nsz l~20.
If it is less than 0'', the light in the direction directly below the fixture will increase, and the vicinity of the center of the illuminance distribution curve (8) shown in the off-line diagram will be raised, resulting in a decrease in the uniformity of illuminance.

また、nズ51〜60の突部e!41 において射出角
度を456以上にすると光源の大きさなどの問題から6
0°以上にも光が射出されてしまいグレアが生じてしま
う。
Also, the protrusions e of n's 51 to 60! 41, if the emission angle is set to 456 or more, the problem of light source size etc. will cause 6
Light is also emitted at angles greater than 0°, causing glare.

なお、上記表に示す突部(財)の角度αユは、ランプセ
ンター■からプリズム部(22の中心(0までの距離!
、が105Uで、中心(0)から端縁ωまでの距離12
が300Bの場合であり、距離も、ノ2が異なる場合は
、突部(ロ)の角度α4をかえて、中心部、端部および
その中間部にて光を鉛直下方よりそれぞれ略30°、4
5°、40°外方へ向って導出すれば同様の作用を呈す
るものである。
The angle α of the protrusion shown in the table above is the distance from the lamp center ■ to the center of the prism section (22 (0!
, is 105U, and the distance from the center (0) to the edge ω is 12
is 300B, and if the distances are different, the angle α4 of the protrusion (b) is changed, and the light is directed from the vertically downward direction by approximately 30 degrees at the center, end, and intermediate part, respectively. 4
A similar effect can be obtained if the beam is guided outward by 5° or 40°.

また、プリズム部(至)の形状も才4図に示すように四
角形に限るものではなく、円形とし同心円状の突部な有
する構造としてもよい。
Further, the shape of the prism portion (toward) is not limited to a rectangular shape as shown in Fig. 4, but may be circular and have concentric protrusions.

さらに、灯体(If)は光源であるランプ(21)の少
なくとも一部を内包していればランプ翰と離間していて
もよい。
Furthermore, the lamp body (If) may be separated from the lamp frame as long as it contains at least a part of the lamp (21) that is the light source.

〔発明の効果〕 本発明によれば、光源から射出された光を中心部近傍で
は鉛直下方より略30°外方姥向って、端部近傍では略
45°外方に向って、中心部と端部との中間部では略4
0°外方に向って導出する形状のプリズムにて透光性カ
バーを形成したため、照明できる範囲を直下方向から4
56ないし506と広くでき、かつこの範囲内では均一
の照度で照明することができ、同一面積を照明する場合
は従来に比べ照明器具の数を減少でき経済性を向上でき
る。
[Effects of the Invention] According to the present invention, the light emitted from the light source is directed approximately 30° outward from the vertically downward direction near the center, and approximately 45° outward from the vertically downward direction near the ends. Approximately 4 in the middle between the ends
Since the light-transmitting cover is formed with a prism shaped to lead outward at 0°, the illumination range is 4 degrees from directly below.
It can be widened from 56 to 506, and can be illuminated with uniform illuminance within this range, and when illuminating the same area, the number of lighting fixtures can be reduced compared to the conventional one, and economical efficiency can be improved.

また、照明器具の直下方向から60°以上には光がほと
んど射出されないため、グレアを防止でき、照明による
不快感を起させることがない。
Furthermore, since almost no light is emitted beyond 60° from directly below the lighting fixture, glare can be prevented and illumination will not cause discomfort.

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

才1図は従来の照明器具による配光および床面照度を示
す説明図、第2図は本発明の照明器具の一実施例を示す
斜視図、才3図は同上一部を切欠いた側面図、第4図は
透光性カバーの底面図、才5図は本実施例の大きさを示
す略図、第6図は第4図のVl−Vl断面図、オフ図は
本発明の照明器具による配光および床面照度な示す説明
図である。 (11)−・灯体、翰・・光源としての高輝度放電ラン
プ、QD・1透光性カバー、(22)・・ブリズA部。 特開昭59−56303 (6)
Figure 1 is an explanatory diagram showing light distribution and floor illuminance by a conventional lighting fixture, Figure 2 is a perspective view showing an embodiment of the lighting fixture of the present invention, and Figure 3 is a partially cutaway side view of the same. , FIG. 4 is a bottom view of the translucent cover, FIG. It is an explanatory diagram showing light distribution and floor illuminance. (11)-- Lamp body, screen: High-intensity discharge lamp as a light source, QD-1 translucent cover, (22)--Blizzard A section. Japanese Patent Publication No. 59-56303 (6)

Claims (1)

【特許請求の範囲】[Claims] (1)光源と、この光源を内包しこの光源からの光を下
面開口部より射出する灯体と、この灯体の下面開口部に
配設された透光性カバーとを備えた照明器具において、
前記透光性カバーを、光源から射出された光を中心部近
傍では鉛直下方より略30’外方に向って、端部近傍で
は略45°外方に向って、中心部と端部との中間部では
略40°外方に向って導出する形状のブリズ^にて形成
したことを特徴とする照明器具。
(1) In a lighting fixture that includes a light source, a lamp body that contains the light source and emits light from the light source through a lower opening, and a translucent cover disposed in the lower opening of the lamp body. ,
The translucent cover is arranged so that the light emitted from the light source is directed approximately 30' outward from the vertically downward direction near the center, and approximately 45° outward near the ends, so that the light emitted from the light source is directed approximately 30' outward from the vertically downward direction near the center, and approximately 45° outward near the ends. A lighting device characterized in that a middle part is formed with a blizzard extending outward by approximately 40 degrees.
JP16711082A 1982-09-24 1982-09-24 Illuminator Granted JPS5956303A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16711082A JPS5956303A (en) 1982-09-24 1982-09-24 Illuminator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16711082A JPS5956303A (en) 1982-09-24 1982-09-24 Illuminator

Publications (2)

Publication Number Publication Date
JPS5956303A true JPS5956303A (en) 1984-03-31
JPH0142081B2 JPH0142081B2 (en) 1989-09-11

Family

ID=15843614

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16711082A Granted JPS5956303A (en) 1982-09-24 1982-09-24 Illuminator

Country Status (1)

Country Link
JP (1) JPS5956303A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59171404A (en) * 1983-03-18 1984-09-27 東芝ライテック株式会社 Illuminator
JPH0340307A (en) * 1990-03-19 1991-02-21 Toshiba Lighting & Technol Corp Illumination fixture
JP2009187773A (en) * 2008-02-06 2009-08-20 Toshiba Lighting & Technology Corp Lighting device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52132576A (en) * 1976-04-30 1977-11-07 Matsushita Electric Works Ltd Lighting fixture cover

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52132576A (en) * 1976-04-30 1977-11-07 Matsushita Electric Works Ltd Lighting fixture cover

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59171404A (en) * 1983-03-18 1984-09-27 東芝ライテック株式会社 Illuminator
JPH0340307A (en) * 1990-03-19 1991-02-21 Toshiba Lighting & Technol Corp Illumination fixture
JP2009187773A (en) * 2008-02-06 2009-08-20 Toshiba Lighting & Technology Corp Lighting device

Also Published As

Publication number Publication date
JPH0142081B2 (en) 1989-09-11

Similar Documents

Publication Publication Date Title
US4939627A (en) Indirect luminaire having a secondary source induced low brightness lens element
US4242723A (en) Low level work area lighting system
CA2169594A1 (en) Ceiling Mounted Wallwash Light Fixture
JPS6327807B2 (en)
US4943901A (en) Luminaire with auxiliary reflecting means
JPS5956303A (en) Illuminator
US5345369A (en) Optical system for lamp-mounting elongate roof fixture
US6729741B1 (en) Light fittings
EP0222115A3 (en) Ceiling lighting fixture
JP3511847B2 (en) lighting equipment
JPH05314803A (en) Indirect lighting fixture
JPS6321846Y2 (en)
JPH10275507A (en) Road lamp
JP2000133009A (en) Luminaire for road lighting
JP2876646B2 (en) Direct lighting and indirect lighting
JPS6319703A (en) Lighting fixture
JPS5935302A (en) Illuminator
JPS5810245Y2 (en) Direct-mounted fluorescent light fixture
JPH0716251Y2 (en) lighting equipment
JPH0719045Y2 (en) lighting equipment
JPH03114103A (en) Suspended illuminating fixture
JPS60254505A (en) Fluorescent lamp lighting fitting
JPH0574201A (en) Lighting equipment
JPS6116405A (en) Fluorescent lamp illuminator
JPS60254506A (en) Lighting fitting