DE1772529A1 - Device for setting the direction for a light source - Google Patents

Description

DR. MÜLLER-BORg DiPL.-lNG. GRALFS DR. ΜΑΝΓΤΖ Dr. Deufel

Braunschweig, 29, times 1968 Our ZelchenJU / Lie - H

Bo Anders Vilhelm Hagner

11 Örrvägen, Näsbypark, Sweden

Device for setting the direction for a Light source

The invention relates to a device for setting the direction of a light source.

To avoid direct glare and reflected glare in large rooms, e.g. in business premises avoid, it is necessary that the light distribution f

ment from the lighting fixtures is concentrated or bundled and asymmetrical. The asymmetry should should preferably still be adjustable, so that when the work places in the room - e.g. the desk - changes the lighting arrangement can also be changed without moving the lighting fixtures.

Furthermore, modern lighting systems in offices and in industry have such a large

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power on that ventilation of the lighting fixture becomes a technical and economic necessity. To heat with great effectiveness to remove from a lighting fixture that is equipped with fluorescent tubes, for example, it is necessary to that the tubes are arranged in a substantially airtight housing, so that a controlled Stream cooling air can be sent through, for example through slots that are mounted in the housing and are preferably at opposite ends of the housing.

Another requirement of a modern lighting fixture is that the overall depth of the Body must be kept as small as possible in order to meet the requirements for sufficient headroom. Therefore, all devices that control the light distribution must be connected to the light source be arranged and must be designed in such a way for lighting fixtures with fluorescent tubes, that they can absorb and control diffuse light *

One aim of the invention is, inter alia, to provide a device for adjusting the height,

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which can be attached to or built into a lighting fixture and the above Requirements met satisfactorily.

According to the invention is in a device for setting the direction for a light source, the one Contains disc made of a clear, transparent material, which is placed in the outlet opening of a lighting ^

processing body is attachable, the arrangement made so that the surface of the disc, which for Light source is executed, is planar or substantially planar and has light deflecting areas is provided or connected, which are arranged such that a plurality of transparent areas remain free through which light from the light source can pass into and through the pane, wherein the other surface of the disc is provided with projections, the number of which corresponds to the number of transparent ones Corresponds to areas, and through which the penetrating through the transparent areas Light is focused on reaching the protrusions.

The invention is illustrated by way of example in the accompanying drawings and will be described in the following in

explained in detail

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FIG. 1 shows EIRR Trilrtrnu ^ '- i cht wi o "b <- n puf cine Aunfiihrungnfor ·" ¹ exr ^ r Vorri chtting according to the invention.

crack· ? is a view of the device of Fijr. 1 from underneath.

? i ^ t a ¹ PoJ] drinfri cht from above ruf ^ inc other / !! 7rführnn £ r: fc ^TW "of a device p; em according to the ü'rfi

? if ^. 4 7, the device of FIG. 3 tilts from below.

IPiQ, 5 shows an enlarged partial section along the line 5-5 of FIGS.

Fig. C- corresponds to Fig. 5 and zoi. ^ T a modification.

FIG. 7 shows a reduced perspective view of a lighting fixture with the device according to FIG. 6.

FIG. 8 is a section along line 8-8 of FIG. 7.

Fig. 9 shows a partial section through a further, ab-

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_ej> jändufl j ν _>"ri.: k · \ i .. ,, de ν ja “>; ·. ui'sichb from above to ^. unbjti with don i'itS · 1 and 2 or 35 and 4 - All together bLuuub.

10, 11 and 12 are., ',. iloöljaiboö by others

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In leii Fig. 1 to 5 is ο ine ocheibe 1 from e clear, durchiohbi ^ un iI-d; -rial dargosbellb, whose oi.no overfill ^ he ebun Jiuü ₀ .jbiidob is I and points to the Liehb-4uc ± lo, while the other surface with; Before ^ prlLu ^ uii. 2 vero ^ hon I ^ L · JIa ebon ^ CbarXlächu der Ijckoibe 1 l.; Ü mil; .V-rjujhrii j from 11 ·; . ■ L- distracting to i / - u ', <■, ·] ¹ L-.α ;,' λογ.j (JiJοu, ίI Le. Ί · t lI oind arranged, they dak a Eehrzani voi \ durchsuchIi ^ en ßez'eicnen 4 clear, through the light; from dex ¹ light source hiiidurohtreton can.iJio 1 i- ^r Mt, abloni: onden ijereioho are

The in the I ¹ Ig. 1 and 2 3.U .. ex'kemionaon projection 2 are each al :; Cylindot-oOgmenb; whereby the Gehno of the cylindex ^ raenba lies parallel to the plane of the disk 1 and the Üegmenbe is in the longitudinal direction ; Diο Üe ^ nioni.'j ran

nfuKl · ;;. · and form ^r ; iiie surface, di.e

1 0 9 8 2 9 / υ b 6 0

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how adjacent Rohro looks like. In this embodiment, the transparent areas 4 are designed as parallel strips which extend alternately with the areas 3 over the length of the pane 1. If the light source is represented by one or more fluorescent tubes, the projections 2 and also the areas 3 and 4 are arranged parallel to the tube or tubes. The reason for this measure is that the brightness generated by a fluorescent tube in a radial. emanating from the longitudinal axis of the tube plane is much greater than so that the interference are most effective int, the tubes in the weüii dargesbellten l / else arranged in a direction transverse to _a Verl be tested plane.

The projections 2 shown in FIGS. 3 and 4 are spherical and offset in close proximity arranged rows lying opposite one another, as can be clearly seen from the drawing, In this case Embodiment have the transparent areas 4 circular shape.

In both embodiments the are transparent Areas 4 arranged so that aio in their number of

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The number of projections corresponds to 2, so that. Every projection, regardless of whether it is formed as a segment or spherical, interacts with a transparent area, whereby all light passing through a transparent area only reaches that projection to which the "area in question belongs. To achieve this, the angle ^ C between a vertical line passing through the line of intersection of two projections 2 and the line connecting the line of intersection and the edge of the adjacent transparent area 4 -not be greater than arc sin 1 / n, if η denotes the refractive index of the disc material drawing examples shown is the radius of Vorspränge 2, the thickness of the disc. _1; the same which is a practical value for normal refractive sindi ze s, but the optical principle of the invention is not affected thereby, so that this value also deviate substantially from said It does not matter whether the projections 2 are spherical or as a segment are formed, the light passing through the associated transparent area is combined downward within a certain angle, the angle being dependent on the refractive index of the disc material. If now the thickness of the disc 1 and the ratio between the radius

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of a projection 2 and the on rc hm narrower or the width of a cross-sectional area 4 are known, it can be shown quickly that the light rays emanating from the disc 1 with the greatest possible angle ß x 'relative to a line running around the disc, which are Li νΛ, Ό rays L1 and L2. When entering the pane 1, these light rays are directed essentially parallel to the flat surface of the pane, so that they are initially aie ivanten of the transparent Bf-. Rich 4 stripes and then tick through the disk in the "." illustrated in the drawing. l'ig « ^l j thus shows a direction in which an i.icatstralil is projected through each projection 2 within the angle 2 ß. If the transparent areas 4 are arranged offset with respect to the associated projections 2, an asymmetrical light distribution through the pane Ί is achieved.

If the transparent areas 4 are wider or have a larger diameter, it is possible that ^ Light that passes through a transparent area is also additionally projected into an adjacent projection 2. This becomes a Produces scattered light that lies outside the angle ß, however, this scattered light does not affect the overall distribution caused by the pane.

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Rays of light that hit the opaque, light-emitting areas; 3 should be reflected back into the lighting fixture with the greatest possible reflection factor in order to achieve a high level of effectiveness of the light source. The surface of the areas ό should therefore be white or otherwise light-reflecting, while the lower surfaces of these areas are preferably black. That can with m

for example by means of screen printing or by means of covering with white paint or by metal spraying take place in a vacuum metal scrubbing process.

i'js can be an advantage no if a lighting fixture some brightness within an angle

generated, but should be limited so that direct glare is avoided. This can be achieved in that the areas 3 are designed in such a way that a limited passage of light is possible. In other words, the material of the areas 5 can be translucent instead of translucent, as can be seen in FIG , the possibly penetrating part of the light beam L3 impinging on a translucent area 3 is represented by the light beam L3b, while with L3a. the reflected part of the beam L3 is beaeiciuaei ;. , glue the areas 5 in color and partially

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are transparent, certain aesthetic effects can be achieved. For example, when the region passes 3 only blue light, a lighting fixture with a disc corresponding to FIG. 5, a light of the same spectral composition as the light source radiate with virtually within the v / inkels 2 χ ß, while the light emitted within the angle Q light is blue .

When the light-deflecting areas 3 have a relatively high May have permeability, the areas can be provided in the surface of the pane itself be. Instead of painting these areas on the surface, you can then paint the actual surface of the pane using an engraving tool or a wire brush, so that a roughened Surface is created.

Fig. 6 shows a further embodiment of the device according to the invention, wherein the disc 1 with the projections 2 in the same way as above is trained. In this embodiment, however, the light-deflecting areas are 3 and the transparent ones Areas 4 provided on a clear, transparent additional sheet 5, which is relative to the

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Disc 1 is movable. The light-deflecting areas 3 are arranged in such a way that each transparent area 4 cooperates with a single projection 2, as was the case above. This embodiment s form has the following advantages: The disk 1 and the disk 5 can be manufactured as individual parts. Furthermore, the .Geheibe 1 and the disk.5 can be permanently connected to each other, ™ in order to meet requirements. It is therefore not absolutely necessary for the supplier to keep a large number of devices in stock in order to meet certain requirements. A further advantage is that the pane 1 and the pane 5 can be installed in such a way that the latter can be used with the aid of adjustment devices is movable relative to the disc 1, so that they are both in a plane parallel to the disc 1 and in a plane lower λ

right to disk 1 is adjustable. These settings can be carried out with the device installed.

FIGS. 7 and 8 show a lighting fixture with a device according to the invention of Fig. 6. The lighting fixture know a housing 6 in which

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a plurality of fluorescent tubes 7 are arranged is. The disk 1 is firmly attached in the outlet opening 8 of the housing 6, while the disk i? is arranged adjustably directly above the disc 1. The Move disk 5 by means of adjusting screws 9 provided on or near each corner of housing 6 are. For adjustment in a horizontal plane, i.e. parallel to the plane of disc 1, is the disc 5 is provided with splashes or projections 10, of denon one with 11 in Calming is standing, before the other with transverse lying Pin 12 is provided that fit into holes in the housing 6. Between the Iflunscluen 10 and the housing 6 are springs 13, which push the washer towards the screws 11, so about the setting of can be made from one side.

Fig. 6 also shows a disorder of the disc 5, in which the transparent areas 4 are slightly offset with respect to the projections 2 , so daii within the angle β. nnd ß ₂ defined area an asymmetrical line is generated vertically.

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9 shows a modification of the embodiment 6, in which the transparent areas 4 are arranged offset with respect to the projections 2 and the disk 5 at a distance from the disk 1 is held by spacers 14. The spacers 14 can be provided with a colored coating in order to achieve a certain aesthetic effect. Bs can be seen that in this arrangement, a light beam L 4 after coming from a spacer 14 has been reflected from the lighting fixture at an acute angle relative to the Level of the disc 1 exits. The brightness and color of this light within the angle depends on the quality with which the light is reflected from the spacer.

In the illustrated and explained embodiments, the projections 2 were either spherical or formed as segments, with the tendons of the segments lying parallel to the plane of the disk 1. In practice, the Vorspränge may of course take other forms, as each protrusion having a smooth surface which is below a transparent \ area, a light summary and

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M- ■ ■ ι . ■ - ..
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creating a directing effect. The particular shape of the projections is due to the required light distribution as well as determined by the particular type of light source used. 10 and 11 are two examples shown for other forms of protrusions 2. In Fig. 10 the projections 2 have a triangular cross-section, so that “the projections can assume the shape of a pyramid, with the transparent areas then can be square or circular »On the other hand, the projections 2 can be triangular Shape also extend in the longitudinal direction of the pane, in which case the transparent areas 4 are formed by spaced parallel strips. Those shown in FIG Projections 2 can be produced in that two adjacent, pointed recesses 15 are formed, so that each protrusion assumes a substantially conical shape.

FIG. 5 shows a modification of the embodiment according to FIG. 5. Here is each transparent area in the middle 4, a strip or disk 16 made of a light-deflecting material is provided. This will a reflected glare directly below the lighting fixture avoided. That in the disc 1 within

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Light entering angles L1 and L2 then creates a light beam that is within angles L1a and L2a emerges from a projection 2. The area 16 which deflects the light is, however, arranged in such a way that that within the range of the angles LIa and L2a a dead area arises, so that the actual Light beam in two spaced light beams within the range of the win- kel LIa and L2a is subdivided, the area directly below the lighting fixture, free from direct light and thus from reflected glare is.

The disk 1 and the disk 5 are preferably made made of a transparent plastic.

In the embodiments according to FIGS. 5, 10, 11 and 12 become areas 3 and 4 during manufacture arranged so that a predetermined lighting effect is obtained. In the embodiments 6 and 9, however, is the disc 5 on which the areas 5 and. 4 are arranged, adjustable, so that the lighting effect can be adjusted as desired and can be changed. -

It is clear that the areas M where they as

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were called circular or square, also hexagonal or in some other way polygonal could be.

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Claims (1)

Often. MOllER-βΟΙΙέ DIPL.-ING. GRALFS DR. MANJTZ Τ) τ> - Ώ * TANW Λ- Dr Deufel PATENT LAWYERS Braunschweig, May 29, 1968 Our reference: Al / L ± e - H 691 Pat rushes to talk / 1Λ apparatus for calibration Tung setting for a light source with a slice of a clear "by * into account Materiali mountable in the outlet opening of a lighting fixture ,, characterized in that the pointing toward the light source surface, Hcheibe (1) ^ be & or substantially DAU give and is provided or connected with light-deflecting areas (3) which are arranged in such a way that a plurality of transparent areas (4) remain free through which light from the light source can pass into and through the pane (1), the other surface thereof is provided with projections (2), the number of which corresponds to the number of transparent areas (4), whereby the light passing through the transparent areas is combined when the projections (2) are covered, 2, device 'according to claim 1, characterized in that, düii' -, leather projection οIr-; οία Beg & ent einon cylinder eui.,: /: biidtiü int, d'iii.jfcixx katiie parallel tfur äbone der Ljcu '.- iü.ft (1) lifefj.;,' '■ - 2 ■ - 1 09B29 / ObBO BATH J. Device according to claim 1, characterized in that that each projection (2) has a triangular cross-section and extends over the length of the disc (1) . 4. gate direction according to claim 1, characterized in that that each projection (2) is formed by adjacent pairs of iron recesses (15) extending in the longitudinal direction the disc (1) run. 5. Device according to one of claims 2 to 4, characterized in that the light-deflecting areas (3) '■ • ■ rl and the transparent areas (4-) as parallel stripes are formed and alternate with each other. 6 »Device according to claim 1, characterized in that each projection (2) has a spherical shape . 7 »Device according to claim 1 _f, characterized in that each projection (2) has the shape of a,! ^ Rapidly. '■ - ■. ■ . '■■. · ■■ - ,.' oi-rxoV «' 8. The device according to claim 1, characterized in that it germinates & jiie £, ·, * <. that every protrusion (2) possesses a spherical shape 29 / 0-5 6 0 BADOfflQINAL 1/72529 9 · Device according to one of Claims 6 "to 8, characterized in that the transparent areas (4) circular, square, or otherwise polygonal shape ". 10. Device according to one of claims 1 to 9 »characterized in that the light deflecting Areas (3) and the transparent areas (4-) ■■: ■■ :. - - - ■ ■ ..-.-. ■ -. ·: ■ g are formed on the disc (1). ^ 11. Device according to one of claims 1 to 9> characterized in that the light-deflecting areas (3) and the transparent areas (4-) are formed on a support plate (5) which is mounted in such a way that it is relative to the disc (1) is adjustable. . 12. Device according to "'" to claim 11, characterized in that λ, the support plate (5) in a plane parallel to the., The disc (1) is adjustable. . 13. Device according to claim 1%, characterized in that that the support disc (5) is perpendicular to the disc (1) Is adjustable. Device according to one of Claims 1 to 13 »thereby characterized in that the light-deflecting areas (3) 10 9829/0560 Mü Ί772529 ίο are opaque. 15 · Device according to one of claims 1 to 13 »thereby characterized in that the light-deflecting areas (3) are translucent. 16, device according to one of claims 1 to 13, characterized in that the light-deflecting Areas (3) by etching or roughening the surface of the disk (1) or the support disk (5) are formed. 17. Device according to one of claims 1 to 16, characterized in that i "in strips or a Disc (16) made of a light-deflecting material in the middle of each transparent area (4 ·) is provided is. 109829 / 0B60 _BAD Lee r be e