EP0377079B1 - Lighting fixture with a louver and tubular fluorescent lamp - Google Patents

Lighting fixture with a louver and tubular fluorescent lamp Download PDF

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Publication number
EP0377079B1
EP0377079B1 EP89116834A EP89116834A EP0377079B1 EP 0377079 B1 EP0377079 B1 EP 0377079B1 EP 89116834 A EP89116834 A EP 89116834A EP 89116834 A EP89116834 A EP 89116834A EP 0377079 B1 EP0377079 B1 EP 0377079B1
Authority
EP
European Patent Office
Prior art keywords
reflectors
lighting fixture
fluorescent lamp
housing
extending
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 - Lifetime
Application number
EP89116834A
Other languages
German (de)
French (fr)
Other versions
EP0377079A1 (en
Inventor
Manfred Grimm
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.)
Thorn Licht GmbH
Original Assignee
Thorn Licht 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 Thorn Licht GmbH filed Critical Thorn Licht GmbH
Publication of EP0377079A1 publication Critical patent/EP0377079A1/en
Application granted granted Critical
Publication of EP0377079B1 publication Critical patent/EP0377079B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/06—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using crossed laminae or strips, e.g. grid-shaped louvers; using lattices or honeycombs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/10—Combinations of only two kinds of elements the elements being reflectors and screens
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • F21V7/0016—Reflectors for light sources providing for indirect lighting on lighting devices that also provide for direct lighting, e.g. by means of independent light sources, by splitting of the light beam, by switching between both lighting modes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes

Definitions

  • the present invention relates to a louvre lamp equipped with a rod-shaped fluorescent lamp, in which the fluorescent lamp is arranged centrally in the upper region of a lamp housing parallel to its longitudinal axis, in which the light exit opening is essentially divided into three fields of approximately the same width.
  • a central area is delimited on both sides by two profiled reflectors extending in the longitudinal direction.
  • the side panels adjoin the middle area symmetrically.
  • the central area is divided by numerous cross-parallel slats parallel to the ceiling.
  • the side panels are each delimited by a profiled reflector and a reflector running in the longitudinal direction, each of which extends in a curved manner over a corner region into the vicinity of a housing ceiling.

Abstract

The present invention relates to a louvred lighting fixture fitted with a bar-shaped fluorescent lamp, in which the fluorescent lamp is arranged centrally in the upper region of a box-shaped lighting fixture housing (10) of relatively large extent in width. The light exit opening is essentially subdivided into three panels of the same width, that is to say a central region (10a), which is bounded by two contoured reflectors (14) extending in the longitudinal direction. The two side panels (10b) are bounded in each case by a contoured reflector (14) and a reflector (13) extending in the longitudinal direction, which in each case extends in a curved manner over a corner region into the vicinity of a housing ceiling (11). The panels are subdivided in the transverse direction by numerous cross vanes consisting, in each case, of two parabolic branches in a V-shaped arrangement, the cross vanes (15) being arranged parallel to the ceiling in the central panel, and the cross vanes (16) being arranged approximately in the diagonal direction in the side panels. Owing to the arrangement of the reflectors, in the lighting fixture according to the invention a portion of the light flux exits in a primary fashion and a portion exits in a secondary fashion, a glare suppression of the light fluxes being achieved by the cross vanes in all panels. <IMAGE>

Description

Die vorliegende Erfindung betrifft eine mit einer stabförmigen Leuchtstofflampe bestückte Rasterleuchte, bei der die Leuchtstofflampe mittig im oberen Bereich eines Leuchtengehäuses parallel zu dessen Längsachse angeordnet ist, bei dem die Lichtaustrittsöffnung im wesentlichen in drei Felder etwa gleicher Breiter unterteilt ist. Ein mittlerer Bereich wird beidseitig begrenzt durch zwei sich in Längsrichtung erstreckende profilierte Reflektoren. Die Seitenfelder schließen sich symmetrisch an den mittleren Bereich an. Der mittlere Bereich ist durch zahlreiche deckenparallele Querlamellen unterteilt. Die Seitenfelder werden begrenzt jeweils durch einen profilierten Reflektor und einen in Längsrichtung verlaufenden Reflektor, der sich gekrümmt jeweils über einen Eckbereich bis in die Nähe einer Gehäusedecke erstreckt.The present invention relates to a louvre lamp equipped with a rod-shaped fluorescent lamp, in which the fluorescent lamp is arranged centrally in the upper region of a lamp housing parallel to its longitudinal axis, in which the light exit opening is essentially divided into three fields of approximately the same width. A central area is delimited on both sides by two profiled reflectors extending in the longitudinal direction. The side panels adjoin the middle area symmetrically. The central area is divided by numerous cross-parallel slats parallel to the ceiling. The side panels are each delimited by a profiled reflector and a reflector running in the longitudinal direction, each of which extends in a curved manner over a corner region into the vicinity of a housing ceiling.

Eine Leuchte der genannten Art ist aus der AT-B-378 589 bekannt. Bei dieser Leuchte ist das Leuchtengehäuse T-förmig mit einer durch zwei Seitenreflektoren begrenzten ersten Lichtaustrittsöffnung, aus der Licht im wesentlichen direkt austritt. Über der Lampe ist ein gewölbter nach beiden Seiten hin auskragender Reflektor vorgesehen, der breiter ist als die genannte mittlere Lichtaustrittsöffnung, so daß über diesen auskragenden Reflektor zusätzlich ein indirekter Lichtanteil von der Leuchte abgestrahlt wird. Dieser indirekte Lichtanteil tritt jedoch unkontrolliert und ungerichtet aus der Leuchte aus. Querlamellen sind bei dieser Leuchte nur in dem mittleren Bereich vorgesehen.A lamp of the type mentioned is known from AT-B-378 589. In this luminaire, the luminaire housing is T-shaped with a first light exit opening delimited by two side reflectors, from which light essentially emerges directly. Above the lamp there is a curved reflector projecting towards both sides, which is wider than the above-mentioned central light exit opening, so that an additional indirect light component is emitted by the lamp via this projecting reflector. However, this indirect light component emerges from the luminaire in an uncontrolled and non-directional manner. Cross blades are only provided in the middle of this lamp.

Aus der EP-A-0 122 972 ist eine mit einer stabförmigen Leuchtstofflampe bestückte Rasterleuchte bekannt, die Querlamellen aufweist, die in einem kurzen mittleren Abschnitt horizontal verlaufen und in zwei sich daran symmetrisch nach außen anschließenden Abschnitten geneigt verlaufen. Bei dieser vorbekannten Leuchte ist jedoch in Längsrichtung (Lampenrichtung) keine Unterteilung des Leuchtengehäuses in mehrere Bereiche vorgesehen. Das Leuchtengehäuse ist bei dieser Leuchte relativ schmal, so daß die Leuchte eher tiefstrahlend ist.From EP-A-0 122 972 a louvre lamp equipped with a rod-shaped fluorescent lamp is known, which has transverse lamellae, which run horizontally in a short central section and incline in two sections adjoining it symmetrically outwards. With this known lamp, however, is in Longitudinal direction (lamp direction) no division of the luminaire housing into several areas is provided. The lamp housing is relatively narrow in this lamp, so that the lamp is rather narrow beam.

Der Erfindung liegt die Aufgabe zugrunde, eine Leuchte zu schaffen, die eine möglichst breite symmetrische Lichtverteilung aufweist und dabei dennoch blendfrei ist. Die Lösung dieser Aufgabe liefert eine Leuchte mit den eingangs genannten Merkmalen in Verbindung mit den kennzeichnenden Merkmalen des Hauptanspruchs.The invention has for its object to provide a lamp that has the widest possible symmetrical light distribution and is still glare-free. The solution to this problem is provided by a luminaire with the features mentioned in the introduction in conjunction with the characterizing features of the main claim.

Anspruch 2 betrifft eine bevorzugte Ausgestaltung der profilierten in Längsrichtung verlaufenden Reflektoren, die die Lichtaustrittsöffnung in drei Felder etwa gleicher Breite unterteilen.Claim 2 relates to a preferred embodiment of the profiled reflectors running in the longitudinal direction, which subdivide the light exit opening into three fields of approximately the same width.

Bei der erfindungsgemäßen Leuchte sind die sich in Längsrichtung erstreckenden Reflektoren so ausgebildet bzw angeordnet, daß ein Teil des Lichtstromes primär, das heißt direkt in einem mittleren Feld austritt, während ein nicht minder großer Teil des Lichtstroms sekundär, das heißt durch Reflexion in zwei sich symmetrisch anschließenden etwa gleich großen Seitenfeldern austreten kann. Durch die gemäß dem Kennzeichen des Anspruchs angeordneten ausgebildeten Querlamellen in sämtlichen Feldern wird eine Entblendung sämtlicher Lichtströme erreicht.In the luminaire according to the invention, the longitudinally extending reflectors are designed or arranged in such a way that part of the luminous flux emerges primarily, that is to say directly in a central field, while a no less large part of the luminous flux is secondary, that is to say symmetrically by reflection in two subsequent side fields of approximately the same size can emerge. Due to the transverse lamellae arranged in accordance with the characterizing part of the claim, all light flows are glare-free.

Im folgenden wir ein Ausführungsbeispiel der Erfindung beschrieben unter Bezugnahme auf die beiliegenden Zeichnungen.

Fig. 1
zeigt im Prinzip einen Querschnitt durch eine Rasterleuchte nach der Erfindung;
Fig. 2
stellt einen Querschnitt durch eine Querlamelle dar.
In the following we describe an embodiment of the invention with reference to the accompanying drawings.
Fig. 1
shows in principle a cross section through a grid light according to the invention;
Fig. 2
represents a cross section through a transverse lamella.

Die Leuchte hat ein kastenförmiges Gehäuse von einer relativ großen Breitenausdehnung, oben begrenzt durch eine Gehäusedecke 11, deren Oberfläche reflektierend sein kann. Der gesamte Lichtstrom einer mittig im oberen Bereich angebrachten Leuchtstofflampe 12 wird symmetrisch der Breite nach über drei etwa gleichgroße Felder verteilt und zwar über ein Mittelfeld 10a und zwei seitliche Felder 10b. Über das Mittelfeld geht im wesentlichen der Lichtstrom primär, das heißt direkt ab, während der sekundäre Lichtstrom vorzugsweise über die seitlichen Felder die Leuchte verläßt. Dabei wird ein Teil des Lichtstromes an den in Längsrichtung verlaufenden Reflektoren 13 zurückgeworfen, die sich im wesentlichen konkav gekrümmt über die Eckbereiche des Gehäuses erstrecken. Ein Teil des sekundären Lichtstromes erhält auch seine Reflexion an der Gehäusedecke.The lamp has a box-shaped housing of a relatively large width, limited at the top by a housing cover 11, the surface of which can be reflective. The entire luminous flux of a fluorescent lamp 12 mounted centrally in the upper region is distributed symmetrically across three fields of approximately the same size, namely via a central field 10a and two lateral fields 10b. Essentially, the luminous flux is primary, that is to say directly, via the middle field, while the secondary luminous flux preferably leaves the lamp via the lateral fields. Part of the luminous flux is reflected back at the longitudinally extending reflectors 13, which extend in a substantially concavely curved manner over the corner regions of the housing. Part of the secondary luminous flux also receives its reflection on the housing ceiling.

Die Längsreflektoren sind schwach gekrümmt und weisen etwa in der Mitte eine Abknickung auf, so daß sich insgesamt ein annähernd parabelförmiger Verlauf ergibt. Das Mittelfeld 10a ist beidseitig begrenzt durch zwei sich über die gesamte Längsrichtung erstreckende profilierte Reflektoren 14, die jeweils einen spitzwinkligen Querschnitt haben mit zwei Schenkeln, und die deckensenkrecht im unteren Gehäusebereich angeordnet sind. Die beiden nach innen gerichteten Schenkel der Reflektoren 14 weisen jeweils eine konkave parabelähnliche Krümmung auf, die nach außen gerichteten Schenkel verlaufen gerade und senkrecht oder nahezu senkrecht.The longitudinal reflectors are slightly curved and have a bend approximately in the middle, so that overall there is an approximately parabolic shape. The center field 10a is delimited on both sides by two profiled reflectors 14 which extend over the entire longitudinal direction and each have an acute-angled cross section with two legs and are arranged perpendicular to the ceiling in the lower housing area. The two inward legs of the reflectors 14 each have a concave parabolic curvature, the outward legs are straight and perpendicular or almost perpendicular.

Das Mittelfeld ist durch zahlreiche deckenparallele Querlamellen 15 unterteilt, während die beiden Seitenfelder in gleicher Weise durch diagonal angeordnete Querlamellen 16 unterteilt sind, die von den Reflektoren 14 ausgehend schräg nach oben zu den seitlichen Reflektoren 13 verlaufen. Der Querschnitt der Querlamellen 15 bzw. 16 geht aus Fig. 2 hervor. Vorzugsweise weisen die Querlamellen 15, 16 je zwei symmetrische Schenkel mit konkaver parabolischer oder parabelähnlicher Krümmung auf.The middle field is subdivided by numerous transverse lamellae 15 parallel to the ceiling, while the two side fields are subdivided in the same way by diagonally arranged transverse lamellae 16 which, starting from the reflectors 14, extend obliquely upwards to the lateral reflectors 13. The cross section of the cross blades 15 and 16 can be seen in FIG. 2. The transverse lamellae 15, 16 preferably each have two symmetrical legs with concave parabolic or parabolic-like curvature.

Claims (2)

  1. Lighting fixture with a louver and a tubular fluorescent lamp in which
    the fluorescent lamp is arranged centrally in the upper region of a lamp housing (10) parallely to the longitudinal axis thereof in which the light outlet opening is divided substantially into three fields of about the same width;
    - a central region (10a) is limited on both sides by two sectioned reflectors (14) extending in longitudinal direction;
    - the lateral fields (10b) join up symmetrically with the central region (10a);
    - the central region (10a) is subdivided by a plurality of transversal lamellae (15) extending parallel to the ceiling;
    - the lateral fields (10b) are limited in each case by a reflector (14) and a reflector (13) extending in longitudinal direction and, in a curved manner, via a corner region up to the vicinity of a housing cover (11);
    characterised by the following features:
    - the housing (10) of the lighting fixture is box-shaped with a width exceeding its height;
    - in all fields (10a, 10b) there are arranged transversal lamellae (15, 16);
    - the transversal lamellae (15, 16) each comprise two symmetrical legs with a concave parabolic or nearly parabolic curvature in a V-shaped arrangement;
    - the transversal lamellae (16) in the lateral fields (10b) are arranged approximately in diagonal direction and extend from the reflectors (14) in an inclined manner upwardly to the lateral reflectors (13);
    - the lateral reflectors (13) extending in longitudinal direction extend downwardly as far as the sectioned reflectors (14);
    - the sectioned reflectors (14) each comprise two legs and a V-shaped cross section with an acute angle which tapers from the upper towards the lower region of the housing.
  2. Lighting fixture with a louver and a tubular fluorescent lamp as claimed in claim 1, characterised in that the leg of the reflectors (14) directed inwardly comprises a concave parabolic curvature and the leg directed outwardly extends straightly and vertically or nearly vertically.
EP89116834A 1989-01-05 1989-09-12 Lighting fixture with a louver and tubular fluorescent lamp Expired - Lifetime EP0377079B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3900202 1989-01-05
DE3900202A DE3900202A1 (en) 1989-01-05 1989-01-05 GRID LAMP EQUIPPED WITH A STAINLESS FLUORESCENT LAMP

Publications (2)

Publication Number Publication Date
EP0377079A1 EP0377079A1 (en) 1990-07-11
EP0377079B1 true EP0377079B1 (en) 1994-11-02

Family

ID=6371619

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89116834A Expired - Lifetime EP0377079B1 (en) 1989-01-05 1989-09-12 Lighting fixture with a louver and tubular fluorescent lamp

Country Status (4)

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US (1) US5029059A (en)
EP (1) EP0377079B1 (en)
AT (1) ATE113705T1 (en)
DE (2) DE3900202A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3932935A1 (en) * 1989-10-03 1991-04-11 Zumtobel Ag LIGHT GRID
DE9310111U1 (en) * 1993-07-07 1993-09-02 Thorn Licht Gmbh Grid lamp equipped with a rod-shaped fluorescent lamp
US5528478A (en) * 1995-10-04 1996-06-18 Cooper Industries, Inc. Lighting fixture having a parabolic louver
USD377231S (en) * 1996-03-19 1997-01-07 Cooper Industries, Inc. Luminaire
DE29613948U1 (en) * 1996-08-12 1997-12-11 Zumtobel Licht Luminaire with at least one lamp, one reflector and one raster reflector
US6626560B1 (en) * 2000-11-22 2003-09-30 Ronald N. Caferro Lighting louver
AT500432B8 (en) * 2003-04-07 2007-02-15 Bartenbach Christian ILLUMINATION DEVICE

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB587744A (en) * 1945-01-15 1947-05-05 Revo Electric Co Ltd Improvements in the method of production of louvres
DE1151475B (en) * 1960-05-06 1963-07-18 Paul Wittstock Anti-glare device for lights, especially for street lights
AT229967B (en) * 1960-10-27 1963-11-11 Gustav Adolf Bartenbach Fa Room lighting system
AT352828B (en) * 1974-02-18 1979-10-10 Siemens Ag GRID LIGHT
DE8106507U1 (en) * 1981-03-07 1981-08-27 Trilux-Lenze Gmbh + Co Kg, 5760 Arnsberg "LUMINAIRE WITH A LONG ELASTIC LAMP AND A MIRROR GRID BELOW IT"
US4428354A (en) * 1982-06-21 1984-01-31 General Motors Corp. Diesel engine fuel limiting system
AT381577B (en) * 1983-04-08 1986-11-10 Bartenbach Christian GLARE-FREE LAMP FOR A ROD-SHAPED LIGHT SOURCE
AT378589B (en) * 1983-06-23 1985-08-26 Zumtobel Ag FLUORESCENT LAMP LAMP WITH A LONG STRETCHED HOUSING
DE8531886U1 (en) * 1985-11-12 1986-08-28 Trilux-Lenze Gmbh + Co Kg, 5760 Arnsberg Ceiling lamp
US4780800A (en) * 1986-05-05 1988-10-25 J. W. Lighting, Inc. Reflective louvre for ceiling fixtures
DE8613788U1 (en) * 1986-05-22 1986-07-31 Fa. Ing. Friedhelm Hirt, 5880 Lüdenscheid Fluorescent tube light
DE3643369A1 (en) * 1986-12-18 1988-07-07 Siemens Ag Elongated luminaire

Also Published As

Publication number Publication date
US5029059A (en) 1991-07-02
DE58908596D1 (en) 1994-12-08
DE3900202A1 (en) 1990-07-12
ATE113705T1 (en) 1994-11-15
EP0377079A1 (en) 1990-07-11

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