DE19916601C2 - Slat, luminaire grid for glare control and luminaire - Google Patents

Slat, luminaire grid for glare control and luminaire

Info

Publication number
DE19916601C2
DE19916601C2 DE1999116601 DE19916601A DE19916601C2 DE 19916601 C2 DE19916601 C2 DE 19916601C2 DE 1999116601 DE1999116601 DE 1999116601 DE 19916601 A DE19916601 A DE 19916601A DE 19916601 C2 DE19916601 C2 DE 19916601C2
Authority
DE
Germany
Prior art keywords
roof surface
lamp
side walls
grid
characterized
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.)
Expired - Fee Related
Application number
DE1999116601
Other languages
German (de)
Other versions
DE19916601A1 (en
Inventor
Janusz Teklak
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.)
Siteco Beleuchtungstechnik GmbH
Original Assignee
Siteco Beleuchtungstechnik GmbH
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 Siteco Beleuchtungstechnik GmbH filed Critical Siteco Beleuchtungstechnik GmbH
Priority to DE1999116601 priority Critical patent/DE19916601C2/en
Publication of DE19916601A1 publication Critical patent/DE19916601A1/en
Application granted granted Critical
Publication of DE19916601C2 publication Critical patent/DE19916601C2/en
Anticipated expiration legal-status Critical
Application status is Expired - Fee Related legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V11/00Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/02Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using parallel laminae or strips, e.g. of Venetian-blind type

Description

The invention relates to a lamella for a grid according to the preamble of claim 1 and an associated grid or lamp.

A lamella according to the preamble of claim 1 is from the German utility model known from DE 81 06 507 U1. There it was proposed to have the louvres on their upper to be provided with a mirror-reflecting cover with side edge sections, which are inclined in a plane transverse to the lamp axis. The cover thus formed is added between the side walls of the slat.

From WO 96/25623 A1 a slat is also known, the two at least on the upper side spaced apart side walls, between which a roof surface in front is seen that between the side walls parallel to the thickness of the lamella essentially runs flat and even. The roof surface can also have additional outstanding structures z. B. in the form of a sawtooth or in the form of protruding tongues.

Newer standards, especially in Anglo-Saxon countries, are no longer just requirements only to the longitudinal and transverse glare control, but also to the glare control in any directions. It has now been shown that grid with grid lamellas of the beginning mentioned type, which is a completely satisfactory glare in the longitudinal and transverse directions according to the less stringent norms, for C-levels diagonally to the lam no sufficient glare control guaranteed. In particular, grid with a High efficiency due to a mirrored roof surface often have problems here.

It is the object of the invention to create a grid lamella or a grid of the aforementioned Art to provide, in which an equally satisfactory glare control in the C90 / 270 plane (longitudinal direction), the C0 / 180 plane (transverse direction) and C planes at an angle to Lamp axis is possible. Another job is to get a more glare-free To provide luminaire.  

According to the invention, this is achieved by a grid lamella according to claim 1 or 5 or reached a grid that has such grid lamellae. The one concerning the lamp Object is achieved by a lamp according to claim 7. Advantageous embodiments the invention are specified in the subclaims.

The invention can provide that the side walls of the slat on both sides of the roof protruding surface and the roof surface substantially below the level of the upper edge of the side walls.

The invention is based on the surprising finding that unsatisfactory glare control in C planes at an angle to the lamp axis due to reflections on the inner surfaces of the side walls is to be attributed, which protrude on both sides of the concave roof surface. Accordingly spreader Accordingly, the invention provides for preventing or suppressing these reflections. OF INVENTION In accordance with this, two options are proposed.

According to a first solution, which is the subject of claim 1, the disturbing reflection thereby preventing the inner surface of the side walls from being made light-absorbing. In a departure from the traditional manufacturing method, one side of a reflective Elements, such as a grid lamella, are always designed with uniform properties, it is provided according to the invention that the top of the slat has two light-absorbing Zones, namely the inner surfaces of the side walls, and a light reflecting zone, namely the roof area. This first solution of the invention is particularly advantageous for Me tall slats, which are made of sheet metal, because the corresponding slat by simple Bending of a correspondingly cut and colored metal sheet can be realized can. In particular, a sheet can be used as the starting material, which is on a Side is reflective and on the other side is light-absorbing.

According to an alternative proposed solution of the invention, the roof area can also be in a Direction parallel to the lamp axis to be concave, so that light that normally would fall on the inner surfaces of the side walls of the slat, through the roof reflector is directed into areas of the lamp in which the light is either absorbed or with an allowable light exit angle to the light exit opening is reflected. One of the like concave formation, possibly in several directions, for example through an appropriately shaped insert that fits between the side walls of the slat is realized.  

Overall, the invention achieves an essential goal with surprisingly simple means Progress in the design of the light emission characteristic. It has particularly come from issued that lights with a large number of reflector lamellae, for. B. more than 10, especially benefit from the invention. According to the invention, small places can also be used high luminance, which is still permissible according to the current standards, but nevertheless in Disrupt individual cases, be avoided.

According to a preferred embodiment, the roof surface is lower in a cross section right to the lamp axis at least in sections according to a conical shape, such as an ellipse, hyperbola or parabola, the formation being in a parabola shape is preferred. Instead of an exact curve, an approximation to such a cone can also be used cut shape, e.g. B. be provided by straight segments, which facilitates manufacturing.

Further features and advantages of the invention result from the following description Exercise of embodiments of the invention with reference to the accompanying drawings.

Fig. 1 shows an embodiment of a louvre vane according to the invention,

Fig. 2 illustrates the principle of glare control in the C planes oblique to the lamp axis.

Fig. 3 shows a modified embodiment.

Fig. 1 shows a scanning blade 1 with a V-shaped basic structure, which has in the direction of the width extending side walls 2 and 3 are two. On the top of the La melle between the side walls 2 and 3 is provided in a cross section perpendicular to the direction Rich the thickness of the concave reflective roof surface 5 which has two inclined, substantially straight sections 7 a and 7 b on the sides and one substantially Chen horizontal section 9 between the two sections 7 a and 7 b. The inner sides 11 and 13 of the side walls 2 and 3 protrude in the area of the beveled surfaces 7 a and 7 b and the central horizontal section 9 beyond the roof reflector 5 .

The principle of glare control in C planes at an angle to the lamp axis by such a lamella is illustrated in FIG. 2. Fig. 2 shows a schematic cross section of a mirror grid through a plane perpendicular to the lamp axis. In Fig. 2, the grid is generally designated by the reference 20 . The reference number 22 denotes the side walls of the grid and the reference number 24 denotes a lamp. As already in FIG. 1, the lamella is generally designated by the reference number 1 .

The inclined sections 7 a and 7 b of the lamella 1 cause the light incident on them to be reflected more strongly towards the center of the grid and into the angular regions adjoining the upper edge of the lamella, which are denoted by β, reflect no light from the roof reflector 5 is, so that overall the reflected light rays on the roof surface 5 after repeated reflection on the side walls 22 with a smaller angle to the vertical to the light exit opening of the grid 20 are reflected than would be the case with a flat roof surface 5 . In this way, the desired glare control can often improve ver, but in some cases not or not completely.

In order to achieve glare control in a C-plane obliquely to the lamp axis or to improve it, the insides 11 and 13 of the two side walls 2 and 3 are at least in the areas in which they protrude above the roof surface 5 , are light-absorbing. As a rule, these areas are colored black. Such a light-absorbing design can be realized by applying a light-absorbing plastic film, by painting with a black paint or in another suitable manner.

FIG. 3 illustrates, for illustration, a modified embodiment which is not the subject of the claims, the same reference numerals denoting the same elements as in FIG. 1. In this embodiment, the inner surfaces 11 and 13 of the side walls 2 and 3 projecting above the roof reflector are eliminated. This also eliminates the disturbing reflections at these sections, which, according to the prior art, led to unsatisfactory glare reduction in directions oblique to the lamp axis.

Claims (7)

1. lamella for a grid of a lamp with two at least on the top spaced side walls ( 2 , 3 ) and a lying between the side walls, at least partially concave, at least partially reflective roof surface ( 5 ), characterized in that at least on one side the roof surface ( 5 ) has a side wall projecting above the roof surface ( 5 ) and on its roof surface ( 5 ) facing side (11, 13) in the area above the roof surface ( 5 ) projecting area is light-absorbing.
2. Slat according to claim 1, characterized in that the side walls ( 2 , 3 ) protrude on the sides of the roof surface.
3. Slat according to claim 1 or 2, characterized in that a projecting side wall (2, 3) on the roof surface ( 5 ) facing side (11, 13) is formed with a light-absorbing coating.
4. slat according to one of claims 1 to 3, characterized by an insert between the side walls of the slat, which has the reflective roof surface ( 5 ).
5. lamella for a grid of a lamp, in particular according to one of claims 1 to 4, with two at least at the top spaced side walls ( 2 , 3 ) and egg ner lying between the side walls, at least partially concave, at least partially reflective roof surface ( 5 ), characterized in that the roof surface ( 5 ) is designed such that it has a concave component at least in sections in a direction perpendicular to the direction of the longitudinal extension of the lamella.
6. luminaire grid with side walls ( 22 ) for cross-glare, which define a light exit opening between them, and arranged between the side walls Lamel len ( 1 ) according to one of claims 1 to 5, the reflective roof surface ( 5 ) facing away from the light exit opening.
7. lamp with a lamp ( 24 ) and a grid ( 20 ) according to claim 6 for glare control of the lamp, characterized in that the lamp is arranged relative to the grid lamellae ( 1 ) such that in a plane perpendicular or oblique to the lamp axis in egg nen to the upper edge of the slats fixed angle range (β) no reflection from the lamp ( 24 ) on the roof surface ( 5 ) incident light, so that the light reflected from the roof surface ( 5 ) of the lamp ( 24 ) with a The specified limiting angle emerges from the lamp.
DE1999116601 1999-04-13 1999-04-13 Slat, luminaire grid for glare control and luminaire Expired - Fee Related DE19916601C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1999116601 DE19916601C2 (en) 1999-04-13 1999-04-13 Slat, luminaire grid for glare control and luminaire

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE1999116601 DE19916601C2 (en) 1999-04-13 1999-04-13 Slat, luminaire grid for glare control and luminaire
AT6102000A AT500187B1 (en) 1999-04-13 2000-04-10 Lamelle for a grid of a light, grid and light
GB0009016A GB2350419B (en) 1999-04-13 2000-04-12 Improvements in or relating to light fittings

Publications (2)

Publication Number Publication Date
DE19916601A1 DE19916601A1 (en) 2000-10-19
DE19916601C2 true DE19916601C2 (en) 2002-08-01

Family

ID=7904369

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1999116601 Expired - Fee Related DE19916601C2 (en) 1999-04-13 1999-04-13 Slat, luminaire grid for glare control and luminaire

Country Status (3)

Country Link
AT (1) AT500187B1 (en)
DE (1) DE19916601C2 (en)
GB (1) GB2350419B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL357189A1 (en) * 2000-02-29 2004-07-26 Lt-Licht-Technik Gmbh Reflector arrangement for a lamp
NL1027815C2 (en) * 2004-12-17 2006-06-20 Lichtholland B V Lamella (52) is for a reflector (2) for a light fitting for a tube lamp and comprises two opposing main sides, an upper side and a lower side (8), all sides having a light-reflecting surface
AT549575T (en) * 2009-03-31 2012-03-15 Flowil Int Lighting Ceiling light housing
CN201407599Y (en) * 2009-04-24 2010-02-17 富昱电机股份有限公司 Lighting tube luminaire
CN104654122B (en) * 2013-11-25 2018-10-12 海洋王(东莞)照明科技有限公司 Fluorescent drum-type lamp
CN104654123A (en) * 2013-11-25 2015-05-27 海洋王(东莞)照明科技有限公司 Metal halide down lamp

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8106507U1 (en) * 1981-03-07 1981-08-27 Trilux-Lenze Gmbh + Co Kg, 5760 Arnsberg, De "Light with an elongated lamp and a mirror arranged underneath raster"
WO1996025623A1 (en) * 1995-02-14 1996-08-22 Philips Electronics N.V. Luminaire

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3014365A1 (en) * 1980-04-15 1981-10-22 Trilux Lenze Gmbh & Co Kg Light fitting for elongated lamp - has reflecting strap, carrying on its upper side tooth-shaped reflectors, parallel to lamp axis
DE3239692A1 (en) * 1982-10-27 1984-05-03 Trilux Lenze Gmbh & Co Kg Light-fixture louvre
DE8330299U1 (en) * 1983-10-18 1984-04-12 Semperlux Gmbh, 1000 Berlin, De Parabolic lamella element for elongated light sources
US4888668A (en) * 1987-09-28 1989-12-19 Siemens Aktiengesellschaft Mirror light unit
DE3815418C2 (en) * 1988-05-06 1990-08-16 Philips Patentverwaltung Gmbh, 2000 Hamburg, De
US5528478A (en) * 1995-10-04 1996-06-18 Cooper Industries, Inc. Lighting fixture having a parabolic louver
DE69720408T2 (en) * 1996-10-08 2004-02-12 Koninklijke Philips Electronics N.V. lighting apparatus
DE29801988U1 (en) * 1998-02-06 1998-05-20 Wagner Hans Dipl Ing Device for improving the efficiency of lamps with louvre

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8106507U1 (en) * 1981-03-07 1981-08-27 Trilux-Lenze Gmbh + Co Kg, 5760 Arnsberg, De "Light with an elongated lamp and a mirror arranged underneath raster"
WO1996025623A1 (en) * 1995-02-14 1996-08-22 Philips Electronics N.V. Luminaire

Also Published As

Publication number Publication date
GB2350419B (en) 2003-10-01
GB2350419A (en) 2000-11-29
DE19916601A1 (en) 2000-10-19
AT500187A1 (en) 2005-11-15
GB0009016D0 (en) 2000-05-31
AT500187B1 (en) 2006-02-15

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
R082 Change of representative

Representative=s name: BOEHMERT & BOEHMERT, DE

Representative=s name: BOEHMERT & BOEHMERT, 28209 BREMEN, DE

R082 Change of representative

Representative=s name: BOEHMERT & BOEHMERT, DE

Effective date: 20111109

Representative=s name: BOEHMERT & BOEHMERT ANWALTSPARTNERSCHAFT MBB -, DE

Effective date: 20111109

R081 Change of applicant/patentee

Owner name: SITECO BELEUCHTUNGSTECHNIK GMBH, DE

Free format text: FORMER OWNER: SITECO BELEUCHTUNGSTECHNIK GMBH, 83301 TRAUNREUT, DE

Effective date: 20111109

R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee