EP1584861B1 - Ergonomic ceiling luminaire - Google Patents

Ergonomic ceiling luminaire Download PDF

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Publication number
EP1584861B1
EP1584861B1 EP05007578A EP05007578A EP1584861B1 EP 1584861 B1 EP1584861 B1 EP 1584861B1 EP 05007578 A EP05007578 A EP 05007578A EP 05007578 A EP05007578 A EP 05007578A EP 1584861 B1 EP1584861 B1 EP 1584861B1
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EP
European Patent Office
Prior art keywords
luminaire
light
light distribution
distribution chambers
fluorescent tubes
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Not-in-force
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EP05007578A
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German (de)
French (fr)
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EP1584861A2 (en
EP1584861A3 (en
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Trilux GmbH and Co KG
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Trilux GmbH and Co KG
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Publication of EP1584861A2 publication Critical patent/EP1584861A2/en
Publication of EP1584861A3 publication Critical patent/EP1584861A3/en
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    • 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
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
    • 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
    • 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
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
    • F21V23/026—Fastening of transformers or ballasts
    • 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
    • F21V7/005—Reflectors for light sources with an elongated shape to cooperate with linear light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/40—Lighting for industrial, commercial, recreational or military use
    • F21W2131/402—Lighting for industrial, commercial, recreational or military use for working places
    • 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 an ergonomic ceiling light, which is particularly suitable for the illumination of offices with VDU workstations.
  • Such lights usually have as bulbs on gas discharge lamps or fluorescent tubes, below which so-called photometric raster elements, such as those from the DE 34 12 162 C1 are known, are arranged, by means of which the light emitted from the fluorescent tube is directed and emitted glare-free down.
  • photometric raster elements such as those from the DE 34 12 162 C1 are known
  • the room lighting conditions are perceived as unpleasant because there is no diffused light illuminating ceilings and walls.
  • ceiling pendant lights of this type is therefore intended that the fluorescent tubes radiate upwards against the ceiling and illuminate the room by reflected from the ceiling diffused light.
  • DE 101 12 055 A1 discloses another lamp of this type, but in which additional illuminant to achieve a high level of light in the light distribution chambers are necessary. Furthermore are off US-A-2 436 635 . DE 24 11 623 A1 . CH 352 406 A and FR-A1-2 315 660 Lights are known in which no light distribution chambers are provided.
  • the object of the invention is to provide such a ceiling lamp with fluorescent tubes, grid and side light distribution chambers available, which has a low overall height.
  • the object of the invention is also to provide a lamp without additional light sources in the lateral Lichtverteilhuntn for a sufficient luminance of the radiating surfaces of Lichtverteilwaitn available.
  • the object is according to a luminaire, the two parallel fluorescent tubes and on both sides laterally thereof propagating Lichtverteilhuntn, the Lichtverteilhuntn the respective fluorescent tube facing substantially vertical light entry surfaces of a light-scattering transparent material, and a below the fluorescent tubes arranged photometric grid element for limiting the radiation angle of the fluorescent tubes down and arranged between the fluorescent tubes on the outside formed as a reflector elongated trough for receiving the electronic operating elements for the fluorescent tubes, further wherein the substantially vertical light entrance surface of the light distribution chambers on the edge adjacent to the lighting grid element have a return from the fluorescent tube away.
  • the trough has a substantially rectangular cross-section with an upwardly directed opening.
  • On both sides of the trough each one of the fluorescent tubes is arranged. Below the trough and the fluorescent tubes, the grid extends.
  • the part of the side walls of the upper part of the fluorescent tubes protruding
  • Trough obliquely bent outward and further extends horizontally above the fluorescent tubes further outward, so that a substantial part of the light emitted from the adjacent fluorescent tube in the direction of the lamp center plane light from the fluorescent tube facing the reflective side of the trough and its also reflective horizontal extension in the direction is deflected to the lateral Lichtverteilhunt.
  • an increased light input is achieved in the Lichtverteilhuntn.
  • the trough is associated with the further technical advantage that this increases the longitudinal stiffness in flat lights and thus the luminaire housing can be made correspondingly filigree.
  • the Lichtverteilhuntn consist of a substantially vertical, adjacent to the respective fluorescent seukrechten light entrance surface of transparent, diffused light scattering material through which light enters the Lichtverteilhunt, a laterally extending bottom of also transparent, diffused light scattering material, diffused by the light from the Lichtverteilhunt is emitted, and an upper opaque upper side, which is reflective to the inside of the Lichtverteilhunt out and, for example Made of polished aluminum sheet. Cost-effective training as a white powdered steel sheet.
  • the underside and the top converge in the course of their lateral extent, so that they meet in a common, parallel to the fluorescent tubes outer edge, the light distribution chamber thus has a substantially triangular cross-section.
  • the ratio of the lateral extent of a light distribution chamber and its vertical extent is at least 3: 1, more preferably at least 4.5: 1.
  • Suitable as a transparent light-scattering material are glass or translucent plastics with light-scattering roughened surface, preferably roughened surface on both sides, or plastics with light-scattering inclusions.
  • the inner surfaces of the undersides of the Lichtverteilwaitn are preferably provided with a parallel to the fluorescent tube step structure, which ensures a nearly as possible vertical incidence of light.
  • the undersides of the Lichtverteilhuntn seen from the outside are convex, so that a good lateral luminance distribution of the undersides is achieved.
  • a ratio of lateral extent of the light distribution chambers to the vertical extent (height of the fluorescent tube adjacent vertical boundary wall) of 4: 1 to 7: 1 to achieve an evenly perceived for the eye luminance of the undersides.
  • the lower side is preferably convex and the upper side is flat and parallel to the ceiling.
  • the underside can be flat and, after installation with the ceiling underside aligned and the top convex.
  • an embodiment of the lamp such that only part of the overall height of the lamp is recessed in the ceiling and the lamp extends in the rest of the ceiling bottom in the room, the undersides of the lateral Lichtverteilhuntn convex the ceiling bottom approach.
  • a particularly pleasing aesthetics of the lamp is generated.
  • this allows a required installation depth can be achieved, which does not exceed the thickness of conventional ceiling trim panels.
  • the grid is integrated into the lamp body, so that the underside of the grid is aligned with the undersides of the Lichtverteilschn.
  • the vertical light entrance surface of the light distribution chamber is formed so that it is formed at its lower edge with a lateral recess and this return is illuminated by the mirror above the fluorescent tube reflected light.
  • lamps of the generic type whose overall height is less than 4 times, preferably less than 3.5 times the fluorescent tube diameter. Furthermore, it is possible to direct more than 60% of the light generated by the fluorescent tubes in the Lichtverteilhuntn so that the average luminance of the lower sides of the Lichtverteilhuntn more than 25% of the average luminance of the grid at a radiating surface ratio of Lichtverteilwaitn to the grid of 6: 1 is.
  • the elements of the invention have been described essentially in the form of elongated profiles parallel to the fluorescent tubes.
  • the person skilled in the art is able to provide terminating elements on both sides of the longitudinal extension of the fluorescent tubes in planes transversely to their axis.
  • the figures each show one half of the symmetrical with respect to the center plane M lamp 1 in cross section.
  • the lamp 1 consists principally of the fluorescent tube 2, the Lichtverteilhunt 3, the grid 4, and optionally the housing 5 with only partially indicated fasteners 51 for the delivery of the lamp to the ceiling structure 7.
  • electronic operating elements 21 are required which are arranged according to the invention within an elongated trough 6 formed outside as a mirror between the fluorescent tubes.
  • the Lichtverteilhuntn 3 consist in principle of an inwardly designed as a mirror or diffuse reflector top 31, a fluorescent tube 2 adjacent vertical Lichteintritt products 33 of transparent, diffuse light scattering material through which light from the fluorescent tube enters the Lichtverteilwait, and a lower, as a radiating surface serving bottom 32 of transparent, diffused light scattering material.
  • the reflector may be formed on the upper side of the housing, so that it is not an integral part of the Lichtverteilhunt 3.
  • the grid 4 consists in a known manner of two side strips 42, between which a plurality of transverse blades 43 extend; on the middle of the cross blades 43, a V-reflector 41 is placed on top.
  • Fig. 1 shows a recessed luminaire 1 with a flat radiating surface 32 of the Lichtverteilhunt, which is aligned with the ceiling lower edge 71.
  • the top 31 is formed as a convex mirror.
  • the fluorescent tube 2 is located in a downwardly open housing, which is formed from the vertical mirror surface 62 of the trough 6, an upper mirror surface 64 and the vertical light entry surface 33 of the Lichtverteilhunt 3.
  • the arrows 8 indicate that light emitted by the fluorescent tube in the direction of the trough 6 is directed via the mirror surfaces 62 and 64 into the light distribution chamber 3.
  • Fig. 2 shows a surface-mounted luminaire 1 with a flat reflector 31 and convex outwardly curved radiating surface 32.
  • the trough 6 was provided with a conical enlargement 63 with an opening angle of 15 to 40 °.
  • Arrows 8 indicate the deflection of the light from the back of the fluorescent tube in the Lichtverteilhunt.
  • the grid 4 was included in the lamp body, so that the lower edge 44 of the grid 4 is aligned with the radiating surface 32.
  • Fig. 3 shows an embodiment of the invention, in which only a part of the overall height of the lamp 1 is sunk in the ceiling 7.
  • the top 31 is formed as a convex mirror.
  • the bottom 32 is also curved convexly outwards.
  • the vertical light entry surface 33 of the light distribution chamber has a recess 34.
  • the arrows 9 indicate that the return 34 passes through from the fluorescent tube 2 obliquely upwardly emitted light is illuminated by reflection on the upper mirror surface 64, so that shadowing is avoided.
  • FIG. 4 an embodiment of the invention as Fig. 3 , wherein the upper side 31 of the Lichtverteilhunt is formed as a planar reflector.

Abstract

The aim of the invention is a ceiling luminaire (1) with a low installation height. The luminaire (1) accommodates two fluorescent lamps (2), from which light diffusers (3) extend to both sides. Arranged underneath the fluorescent lamp (2) is a louver element (4) to limit the angle of the reflected light beam downwards. Between the two florescent lights (2) is a hutch designed as a reflector, which contains all the electronic elements (21) of the luminaire (1).

Description

Die vorliegende Erfindung betrifft eine ergonomische Deckenleuchte, die insbesondere für die Ausleuchtung von Büros mit Bildschirmarbeitsplätzen geeignet ist.The present invention relates to an ergonomic ceiling light, which is particularly suitable for the illumination of offices with VDU workstations.

Derartige Leuchten weisen üblicherweise als Leuchtmittel Gasentladungslampen oder Leuchtstoffröhren auf, unterhalb derer sogenannte lichttechnische Rasterelemente, wie sie beispielsweise aus der DE 34 12 162 C1 bekannt sind, angeordnet sind, mittels derer das von der Leuchtstoffröhre abgegebene Licht gerichtet und blendfrei nach unten abgestrahlt wird. Obwohl derartige Leuchten für eine hervorragende Arbeitsplatzbeleuchtung sorgen, werden die Raumlichtverhältnisse als unangenehm empfunden, da diffuses Licht fehlt, das Decken und Wände erhellt. Bei Deckenpendelleuchten dieser Art ist daher vorgesehen, dass die Leuchtstoffröhren auch ungerichtet nach oben gegen die Decke strahlen und den Raum durch von der Decke reflektiertes diffuses Licht erhellen.Such lights usually have as bulbs on gas discharge lamps or fluorescent tubes, below which so-called photometric raster elements, such as those from the DE 34 12 162 C1 are known, are arranged, by means of which the light emitted from the fluorescent tube is directed and emitted glare-free down. Although such luminaires provide excellent workplace lighting, the room lighting conditions are perceived as unpleasant because there is no diffused light illuminating ceilings and walls. In ceiling pendant lights of this type is therefore intended that the fluorescent tubes radiate upwards against the ceiling and illuminate the room by reflected from the ceiling diffused light.

Bei Deckeneinbauleuchten ist es üblich, seitlich der Leuchtstoffröhren sogenannte Lichtverteilkammern vorzusehen, in die das seitlich von den Leuchtstoffröhren abgestrahlte Licht eintritt und über vergleichsweise großflächige, im wesentlichen horizontal ausgedehnte diffus-transparente Abstrahlflächen diffus abgestrahlt wird, siehe z. B. WO 98/29683 , DE 279 12 314 U1 , DE 100 06 410 A1 und DE 101 12 055 A1 . Weitere Leuchten dieser Art sind aus DE 297 10 475 U1 und DE 101 04 090 A1 bekannt.In the case of recessed ceiling luminaires, it is customary to provide so-called light distribution chambers laterally into which the light emitted laterally from the fluorescent tubes diffuses and is diffusely emitted over comparatively large, substantially horizontally expanded diffuse-transparent radiating surfaces, see, for example, US Pat. B. WO 98/29683 . DE 279 12 314 U1 . DE 100 06 410 A1 and DE 101 12 055 A1 , Other lights of this kind are out DE 297 10 475 U1 and DE 101 04 090 A1 known.

Aufgrund der vergleichsweise großen vertikalen Ausdehnung derartiger Leuchten sind diese im Wesentlichen nur in Räumen mit abgehängter Decke einsetzbar, bei denen oberhalb der sichtbaren Decke noch ein ausreichender Luftraum zur Verfügung steht. Ferner ist es für eine ausreichende Leuchtdichte der seitlichen Lichtverteilkammern erforderlich, innerhalb der Lichtverteilkammern zusätzliche Leuchtmittel vorzusehen oder deren Abstrahlfläche entsprechend zu beschränken.Due to the comparatively large vertical extent of such lights, these are essentially only used in rooms with a suspended ceiling, in which above the visible ceiling nor a sufficient airspace is available. Furthermore, it is necessary for a sufficient luminance of the lateral light distribution chambers to provide additional light sources within the light distribution chambers or to limit their emission area accordingly.

DE 101 12 055 A1 offenbart eine weitere Leuchte dieser Art, bei der jedoch Zusatzleuchtmittel zur Erreichung eines hohen Lichtanteils in den Lichtverteilungskammern notwendig sind. Im Weiteren sind aus US-A-2 436 635 , DE 24 11 623 A1 , CH 352 406 A und FR-A1-2 315 660 Leuchten bekannt, bei denen keine Lichtverteilungskammern vorgesehen sind. DE 101 12 055 A1 discloses another lamp of this type, but in which additional illuminant to achieve a high level of light in the light distribution chambers are necessary. Furthermore are off US-A-2 436 635 . DE 24 11 623 A1 . CH 352 406 A and FR-A1-2 315 660 Lights are known in which no light distribution chambers are provided.

Aufgabe der Erfindung ist es, eine derartige Deckenleuchte mit Leuchtstoffröhren, Raster und seitlichen Lichtverteilkammern zur Verfügung zu stellen, die eine geringe Bauhöhe aufweist. Aufgabe der Erfindung ist es ferner, eine Leuchte ohne zusätzliche Leuchtmittel in den seitlichen Lichtverteilkammern für eine ausreichende Leuchtdichte der Abstrahlflächen der Lichtverteilkammern zur Verfügung zu stellen. Schließlich ist es Aufgabe der Erfindung, eine Leuchte mit möglichst gleichmäßiger Leuchtdichte der Abstrahlflächen der seitlichen Lichtverteilkammern bereit zu stellen, insbesondere auch unter Vermeidung von Schattenbildungen, insbesondere im Bereich benachbart zu dem Raster.The object of the invention is to provide such a ceiling lamp with fluorescent tubes, grid and side light distribution chambers available, which has a low overall height. The object of the invention is also to provide a lamp without additional light sources in the lateral Lichtverteilkammern for a sufficient luminance of the radiating surfaces of Lichtverteilkammern available. Finally, it is an object of the invention to provide a luminaire with the most uniform possible luminance of the emission surfaces of the lateral light distribution chambers, in particular also avoiding shadowing, in particular in the region adjacent to the grid.

Gegenstand ist dem gemäß eine Leuchte, die zwei parallel angeordnete Leuchtstoffröhren und beidseitig seitlich davon sich ausbreitende Lichtverteilkammern, wobei die Lichtverteilkammern der jeweiligen Leuchtstoffröhre zugewandte im Wesentlichen senkrechte Lichteintrittsflächen aus einem lichtstreuenden transparenten Material aufweisen, und ein unterhalb der Leuchtstoffröhren angeordnetes lichttechnisches Rasterelement zur Begrenzung des Abstrahlwinkels der Leuchtstoffröhren nach unten und einem zwischen den Leuchtstoffröhren angeordneten außenseitig als Reflektor ausgebildeten langgestreckten Trog zur Aufnahme der elektronischen Betriebselemente für die Leuchtstoffröhren, wobei ferner die im Wesentlichen senkrechte Lichteintrittsfläche der Lichtverteilungskammern an der zum lichttechnischen Rasterelement benachbarten Kante einen Rücksprung von der Leuchtstoffröhre weg aufweisen. Vorzugsweise weist der Trog einen im Wesentlichen rechteckigen Querschnitt mit einer nach oben gerichteter Öffnung auf. Beidseitig des Troges ist je eine der Leuchtstoffröhren angeordnet. Unterhalb des Troges und der Leuchtstoffröhren erstreckt sich das Raster. Vorzugsweise ist der die Oberkante der Leuchtstoffröhren überragende Teil der Seitenwände desThe object is according to a luminaire, the two parallel fluorescent tubes and on both sides laterally thereof propagating Lichtverteilkammern, the Lichtverteilkammern the respective fluorescent tube facing substantially vertical light entry surfaces of a light-scattering transparent material, and a below the fluorescent tubes arranged photometric grid element for limiting the radiation angle of the fluorescent tubes down and arranged between the fluorescent tubes on the outside formed as a reflector elongated trough for receiving the electronic operating elements for the fluorescent tubes, further wherein the substantially vertical light entrance surface of the light distribution chambers on the edge adjacent to the lighting grid element have a return from the fluorescent tube away. Preferably, the trough has a substantially rectangular cross-section with an upwardly directed opening. On both sides of the trough each one of the fluorescent tubes is arranged. Below the trough and the fluorescent tubes, the grid extends. Preferably, the part of the side walls of the upper part of the fluorescent tubes protruding

Troges schräg nach außen abgeknickt und erstreckt sich weiter horizontal oberhalb der Leuchtstoffröhren weiter nach außen, so dass ein wesentlicher Teil des von der benachbarten Leuchtstoffröhre in Richtung der Leuchtenmittelebene ausgesandten Lichtes von der der Leuchtstoffröhre zugewandten reflektierenden Seite des Troges und seiner ebenfalls reflektierenden horizontalen Erstreckung in Richtung auf die seitliche Lichtverteilkammer umgelenkt wird. Hierdurch wird ein erhöhter Lichteintrag in die Lichtverteilkammern erreicht.Trough obliquely bent outward and further extends horizontally above the fluorescent tubes further outward, so that a substantial part of the light emitted from the adjacent fluorescent tube in the direction of the lamp center plane light from the fluorescent tube facing the reflective side of the trough and its also reflective horizontal extension in the direction is deflected to the lateral Lichtverteilkammer. As a result, an increased light input is achieved in the Lichtverteilkammern.

Der Trog ist mit dem weiteren technischen Vorteil verbunden, dass dieser bei flachen Leuchten die Längssteifigkeit erhöht und mithin das Leuchtengehäuse entsprechend filigraner ausgebildet werden kann.The trough is associated with the further technical advantage that this increases the longitudinal stiffness in flat lights and thus the luminaire housing can be made correspondingly filigree.

Die Lichtverteilkammern bestehen aus einer im Wesentlichen vertikalen, zur jeweiligen Leuchtstoffröhre benachbarten seukrechten Lichteintrittsfläche aus transparentem, diffus lichtstreuenden Material, durch die Licht in die Lichtverteilkammer eintritt, einer sich seitlich erstreckenden Unterseite aus ebenfalls transparentem, diffus lichtstreuenden Material, durch die Licht aus der Lichtverteilkammer diffus abgestrahlt wird, sowie einer oberen lichtundurchlässigen Oberseite, die zur Innenseite der Lichtverteilkammer hin reflektierend ist und z.B. aus poliertem Aluminiumblech bestehen kann. Kostengünstig ist eine Ausbildung als weiß gepulvertes Stahlblech.The Lichtverteilkammern consist of a substantially vertical, adjacent to the respective fluorescent seukrechten light entrance surface of transparent, diffused light scattering material through which light enters the Lichtverteilkammer, a laterally extending bottom of also transparent, diffused light scattering material, diffused by the light from the Lichtverteilkammer is emitted, and an upper opaque upper side, which is reflective to the inside of the Lichtverteilkammer out and, for example Made of polished aluminum sheet. Cost-effective training as a white powdered steel sheet.

Vorzugsweise konvergieren die Unterseite und die Oberseite im Verlauf ihrer seitlichen Erstreckung, so dass sie sich in einer gemeinsamen, zu den Leuchtstoffröhren parallelen Außenkante treffen, die Lichtverteilkammer also einem im wesentlichen dreieckigen Querschnitt aufweist.Preferably, the underside and the top converge in the course of their lateral extent, so that they meet in a common, parallel to the fluorescent tubes outer edge, the light distribution chamber thus has a substantially triangular cross-section.

Vorzugsweise beträgt das Verhältnis der seitlichen Ausdehnung einer Lichtverteilkammer und ihrer vertikalen Ausdehnung mindestens 3:1, besonders bevorzugt mindesten 4,5:1.Preferably, the ratio of the lateral extent of a light distribution chamber and its vertical extent is at least 3: 1, more preferably at least 4.5: 1.

Als transparentes lichtstreuendes Material geeignet sind Glas oder lichtdurchlässige Kunststoffe mit lichtstreuend aufgerauter Oberfläche, vorzugsweise beidseitig aufgerauter Oberfläche, oder Kunststoffe mit lichtstreuenden Einschlüssen. Die innere Oberflächen der Unterseiten der Lichtverteilkammern sind vorzugsweise mit einer zur Leuchtstoffröhre parallelen Stufenstruktur versehen, die einen möglichst angenähert senkrechten Lichteinfall gewährleistet.Suitable as a transparent light-scattering material are glass or translucent plastics with light-scattering roughened surface, preferably roughened surface on both sides, or plastics with light-scattering inclusions. The inner surfaces of the undersides of the Lichtverteilkammern are preferably provided with a parallel to the fluorescent tube step structure, which ensures a nearly as possible vertical incidence of light.

Bevorzugt sind die Unterseiten der Lichtverteilkammern von außen gesehen konvex ausgebildet, so dass eine gute seitliche Leuchtdichte- Verteilung der Unterseiten erzielt wird. Auf diese weise ist es möglich, bei einem Verhältnis von seitlicher Ausdehnung der Lichtverteilkammern zu deren vertikalausdehnung (Höhe der zur Leuchtstoffröhre benachbarten vertikalen Begrenzungswand) von 4:1 bis 7:1 eine für das Auge als gleichmäßig empfundene Leuchtdichte der Unterseiten zu erreichen.Preferably, the undersides of the Lichtverteilkammern seen from the outside are convex, so that a good lateral luminance distribution of the undersides is achieved. In this way it is possible, with a ratio of lateral extent of the light distribution chambers to the vertical extent (height of the fluorescent tube adjacent vertical boundary wall) of 4: 1 to 7: 1 to achieve an evenly perceived for the eye luminance of the undersides.

Im Falle der Ausführung der Leuchte als Anbauleuchte ist vorzugsweise die Unterseite konvex ausgebildet und die Oberseite eben und parallel zur Decke.In the case of the design of the luminaire as a surface-mounted luminaire, the lower side is preferably convex and the upper side is flat and parallel to the ceiling.

Im Falle der Ausführung der Leuchte als Einbauleuchte kann die Unterseite eben und nach Einbau mit der Deckenunterseite fluchtend ausgebildet sein und die Oberseite konvex. Besonders bevorzugt ist eine Ausführung der Leuchte derart, dass nur ein Teil der Bauhöhe der Leuchte in der Decke versenkt ist und die Leuchte sich im übrigen von der Deckenunterseite in den Raum erstreckt, wobei die Unterseiten der seitliche Lichtverteilkammern sich konvex der Deckenunterseite annähern. Hierdurch wird eine besonders gefällige Ästhetik der Leuchte erzeugt. Ferner kann hierdurch ein erforderliche Einbautiefe erzielt werden, die die Dicke von üblichen Deckenverkleidungspaneelen nicht überschreitet.In the case of the design of the luminaire as recessed luminaire, the underside can be flat and, after installation with the ceiling underside aligned and the top convex. Particularly preferred is an embodiment of the lamp such that only part of the overall height of the lamp is recessed in the ceiling and the lamp extends in the rest of the ceiling bottom in the room, the undersides of the lateral Lichtverteilkammern convex the ceiling bottom approach. As a result, a particularly pleasing aesthetics of the lamp is generated. Furthermore, this allows a required installation depth can be achieved, which does not exceed the thickness of conventional ceiling trim panels.

Nach einer weiter bevorzugten Ausführungsform der Erfindung wird das Raster in den Leuchtenkörper integriert, so dass die Unterseite des Rasters mit den Unterseiten der Lichtverteilkammern fluchtet. Dabei besteht das Risiko, dass die zum Raster benachbarten Kantenbereiche der Unterseiten der Lichtverteilkammern durch die äußeren Seitenleisten des Rasters abgeschattet wird. In der bevorzugten Ausführungsform wird daher die senkrechte Lichteintrittsfläche der Lichtverteilkammer so ausgebildet, dass sie an ihrer Unterkante mit einem seitlichen Rücksprung ausgebildet wird und dieser Rücksprung von dem Spiegel oberhalb der Leuchtstoffröhre reflektiertem Licht beleuchtet wird.According to a further preferred embodiment of the invention, the grid is integrated into the lamp body, so that the underside of the grid is aligned with the undersides of the Lichtverteilkammern. There is the risk that the adjacent to the grid edge portions of the undersides of the light distribution chambers is shaded by the outer side rails of the grid. In the preferred embodiment, therefore, the vertical light entrance surface of the light distribution chamber is formed so that it is formed at its lower edge with a lateral recess and this return is illuminated by the mirror above the fluorescent tube reflected light.

Erfindungsgemäß gelingt es, Leuchten der gattungsbildenden Art herzustellen, deren Bauhöhe weniger als das 4-fache, vorzugsweise weniger als das 3,5-fache des Leuchtstoffröhrendurchmessers beträgt. Weiterhin gelingt es, mehr als 60% des von den Leuchtstoffröhren erzeugten Lichtes in die Lichtverteilkammern zu leiten, so dass die mittlere Leuchtdichte der Unterseiten der Lichtverteilkammern mehr als 25% der mittleren Leuchtdichte des Rasters bei einem Abstrahlflächenverhältnis von Lichtverteilkammern zu dem Raster von 6:1 beträgt.According to the invention it is possible to produce lamps of the generic type whose overall height is less than 4 times, preferably less than 3.5 times the fluorescent tube diameter. Furthermore, it is possible to direct more than 60% of the light generated by the fluorescent tubes in the Lichtverteilkammern so that the average luminance of the lower sides of the Lichtverteilkammern more than 25% of the average luminance of the grid at a radiating surface ratio of Lichtverteilkammern to the grid of 6: 1 is.

Die Elemente der Erfindung wurden im wesentlichen in Form langgestreckter, zu den Leuchtstoffröhren parallel verlaufender Profile beschrieben. Der Fachmann ist in der Lage, beidseitig der Längsausdehnung der Leuchtstoffröhren in Ebenen quer zu ihrer Achse Abschlusselemente vorzusehen.The elements of the invention have been described essentially in the form of elongated profiles parallel to the fluorescent tubes. The person skilled in the art is able to provide terminating elements on both sides of the longitudinal extension of the fluorescent tubes in planes transversely to their axis.

Die Erfindung wird nachfolgend anhand schematischer Querschnittszeichnungen beispielhaft näher erläutert, wobei gleiche Elemente in den verschiedenen Figuren durch gleiche Bezugszeichen bezeichnet sind. Es zeigen:

Fig. 1
eine schematische erste Ausführungsform der Erfin- dung in Form eines Einbauleuchte;
Fig. 2
eine schematisch zweite Ausführungsform in Form einer Anbauleuchte; und
Fig. 3 und 4
zwei schematische Ausführungsformen von Einbau- leuchten, bei denen nur ein Teil der Bauhöhe in der Decke versenkt wird.
The invention will be described below with reference to schematic cross-sectional drawings explained in more detail by way of example, wherein like elements in the various figures are designated by like reference numerals. Show it:
Fig. 1
a schematic first embodiment of the invention in the form of a recessed luminaire;
Fig. 2
a schematic second embodiment in the form of a surface-mounted luminaire; and
3 and 4
two schematic embodiments of recessed lights, in which only a portion of the height is sunk in the ceiling.

Die Figuren zeigen jeweils eine Hälfte der bezüglich der Mittelebene M symmetrischen Leuchte 1 im Querschnitt. Die Leuchte 1 besteht prinzipiell aus der Leuchtstoffröhre 2, der Lichtverteilkammer 3, dem Raster 4, sowie gegebenenfalls dem Gehäuse 5 mit nur teilweise angedeuteten Befestigungselementen 51 zur Abbringung der Leuchte an der Deckenkonstruktion 7. Für den Betrieb der Leuchtstoffröhren 2 sind elektronische Betriebselemente 21 erforderlich, die erfindungsgemäß innerhalb eines außen als Spiegel ausgebildeten langgestreckten Troges 6 zwischen den Leuchtstoffröhren angeordnet sind.The figures each show one half of the symmetrical with respect to the center plane M lamp 1 in cross section. The lamp 1 consists principally of the fluorescent tube 2, the Lichtverteilkammer 3, the grid 4, and optionally the housing 5 with only partially indicated fasteners 51 for the delivery of the lamp to the ceiling structure 7. For the operation of the fluorescent tubes 2 electronic operating elements 21 are required which are arranged according to the invention within an elongated trough 6 formed outside as a mirror between the fluorescent tubes.

Die Lichtverteilkammern 3 bestehen prinzipiell aus einer nach innen als Spiegel oder diffuserer Reflektor ausgebildeten Oberseite 31, einer zur Leuchtstoffröhre 2 benachbarten senkrechten Lichteintrittfläche 33 aus transparentem, diffus lichtstreuendem Material, durch die Licht von der Leuchtstoffröhre in die Lichtverteilkammer eintritt, sowie einer unteren, als Abstrahlfläche dienenden Unterseite 32 aus transparentem, diffus lichtstreuenden Material. Alternativ kann der Reflektor oberseitig am Gehäuse ausgebildet sein, so dass dieser nicht integraler Bestandteil der Lichtverteilkammer 3 ist.The Lichtverteilkammern 3 consist in principle of an inwardly designed as a mirror or diffuse reflector top 31, a fluorescent tube 2 adjacent vertical Lichteintrittfläche 33 of transparent, diffuse light scattering material through which light from the fluorescent tube enters the Lichtverteilkammer, and a lower, as a radiating surface serving bottom 32 of transparent, diffused light scattering material. Alternatively, the reflector may be formed on the upper side of the housing, so that it is not an integral part of the Lichtverteilkammer 3.

Das Raster 4 besteht in bekannter Weise aus zwei Seitenleisten 42, zwischen denen sich eine Vielzahl von Querlamellen 43 erstrecken; auf der Mitte der Querlamellen 43 ist oberseitig ein V-Reflektor 41 aufgesetzt.The grid 4 consists in a known manner of two side strips 42, between which a plurality of transverse blades 43 extend; on the middle of the cross blades 43, a V-reflector 41 is placed on top.

Fig. 1 zeigt eine Einbauleuchte 1 mit ebener Abstrahlfläche 32 der Lichtverteilkammer, die mit der Deckenunterkante 71 fluchtet. Die Oberseite 31 ist als Konvexspiegel ausgebildet. Die Leuchtstoffröhre 2 befindet sich in einem nach unten offenen Gehäuse, das aus der senkrechten Spiegelfläche 62 des Troges 6, einer oberen Spiegelfläche 64 und der senkrechten Lichteintrittsfläche 33 der Lichtverteilkammer 3 gebildet wird. Durch die Pfeile 8 ist angedeutet, dass von der Leuchtstoffröhre in Richtung auf den Trog 6 abgestrahltes Licht über die Spiegelflächen 62 und 64 in die Lichtverteilkammer 3 gelenkt wird. Fig. 1 shows a recessed luminaire 1 with a flat radiating surface 32 of the Lichtverteilkammer, which is aligned with the ceiling lower edge 71. The top 31 is formed as a convex mirror. The fluorescent tube 2 is located in a downwardly open housing, which is formed from the vertical mirror surface 62 of the trough 6, an upper mirror surface 64 and the vertical light entry surface 33 of the Lichtverteilkammer 3. The arrows 8 indicate that light emitted by the fluorescent tube in the direction of the trough 6 is directed via the mirror surfaces 62 and 64 into the light distribution chamber 3.

Fig. 2 zeigt eine Anbauleuchte 1 mit ebenem Reflektor 31 und konvex nach außen gekrümmter Abstrahlfläche 32. In der Darstellung der Fig. 2 wurde der Trog 6 mit einer konischen Erweiterung 63 mit einem Öffnungswinkel von 15 bis 40° versehen. Pfeile 8 deuten die Umlenkung des Lichtes von der Rückseite der Leuchtstoffröhre in die Lichtverteilkammer an. Ferner wurde bei dieser Darstellung das Raster 4 in den Leuchtenkörper einbezogen, so dass die Unterkante 44 des Rasters 4 mit der Abstrahlfläche 32 fluchtet. Fig. 2 shows a surface-mounted luminaire 1 with a flat reflector 31 and convex outwardly curved radiating surface 32. In the illustration of Fig. 2 the trough 6 was provided with a conical enlargement 63 with an opening angle of 15 to 40 °. Arrows 8 indicate the deflection of the light from the back of the fluorescent tube in the Lichtverteilkammer. Furthermore, in this illustration, the grid 4 was included in the lamp body, so that the lower edge 44 of the grid 4 is aligned with the radiating surface 32.

Fig. 3 zeigt eine Ausführungsform der Erfindung, bei der nur ein Teil der Bauhöhe der Leuchte 1 in der Decke 7 versenkt ist. Die Oberseite 31 ist als Konvexspiegel ausgebildet. Die Unterseite 32 ist ebenfalls konvex nach außen gekrümmt. Zur Vermeidung einer Abschattung der an der zum Raster 4 benachbarten Kante der Unterseite 32 durch die Seitenleisten 42 weist die senkrechte Lichteintrittsfläche 33 der Lichtverteilkammer einen Rücksprung 34 auf. Die Pfeile 9 deuten an, dass der Rücksprung 34 durch von der Leuchtstoffröhre 2 nach schräg oben abgestrahltes Licht durch Reflexion an der oberen Spiegelfläche 64 beleuchtet wird, so dass Schattenbildung vermieden wird. Fig. 3 shows an embodiment of the invention, in which only a part of the overall height of the lamp 1 is sunk in the ceiling 7. The top 31 is formed as a convex mirror. The bottom 32 is also curved convexly outwards. In order to avoid shading of the edge of the underside 32 adjacent to the grid 4 by the side strips 42, the vertical light entry surface 33 of the light distribution chamber has a recess 34. The arrows 9 indicate that the return 34 passes through from the fluorescent tube 2 obliquely upwardly emitted light is illuminated by reflection on the upper mirror surface 64, so that shadowing is avoided.

Schließlich zeigt Fig. 4 eine Ausführungsform der Erfindung wie Fig. 3, wobei die Oberseite 31 der Lichtverteilkammer als ebener Reflektor ausgebildet ist.Finally shows Fig. 4 an embodiment of the invention as Fig. 3 , wherein the upper side 31 of the Lichtverteilkammer is formed as a planar reflector.

Zur Vereinfachung der Darstellung wurden in den Figuren jeweils mehrere Elemente der Erfindung variiert. Hierdurch ist keine Beschränkung der Erfindung auf die Kombination bestimmter Elemente beabsichtigt. Vielmehr kann die bevorzugte Ausbildung des Rücksprungs 34 gemäß Fig. 3 und 4 bevorzugt auch bei einer Anbauleuchte gemäß Fig. 2 eingesetzt werden. Ferner kann es ästhetischen oder lichttechnischen Gründen wünschenswert sein, bei einer Leuchte mit nur teilweiser Versenkung der Bauhöhe in die Decke gemäß Fig. 3 oder 4 das Raster 4 nur teilweise oder gar nicht in den Leuchtekörper einzubeziehen, wie in Fig. 1 dargestellt.For ease of illustration, several elements of the invention have been varied in the figures. As a result, no limitation of the invention to the combination of certain elements is intended. Rather, the preferred embodiment of the recess 34 according to 3 and 4 preferably also in the case of a surface-mounted luminaire according to Fig. 2 be used. Furthermore, it may be desirable for aesthetic or lighting reasons, in a lamp with only partial sinking of the height in the ceiling according to 3 or 4 to include the grid 4 only partially or not at all in the luminaire body, as in Fig. 1 shown.

Claims (9)

  1. A luminaire (1) including
    two fluorescent tubes (2) arranged in parallel relationship next to each other and
    light distribution chambers (3) which extend laterally on both sides of the former, the light distribution chambers (3) having substantially vertical light entry surfaces (33) made of a transparent light-diffusing material and facing toward the respective fluorescent tube (2), and
    a lighting louver element (4) arranged beneath the fluorescent tubes (2), for downwardly delimiting the radiating angle of the fluorescent tubes, and
    an elongate trough (6), which is arranged between the fluorescent tubes (2) and formed as reflector (62, 63) on its outside, for accommodating the electronic operating elements (21) for the fluorescent tubes (2), wherein furthermore
    the substantially vertical light entry surfaces (33) of the light distribution chambers (3) are provided with an offset portion (34) away from the fluorescent tube at the edge neighbouring the lighting louver element (4).
  2. The luminaire (1) according to claim 1 wherein the ratio of the horizontal extent of the light distribution chambers (3) transversely to the orientation of the fluorescent tubes (2) relative to the vertical extent is at least 3:1, preferably at least 4.5:1.
  3. The luminaire (1) according to claim 1 or claim 2 wherein the top sides (31) of the light distribution chambers (3) are in the form of reflectors and the undersides (32) are made of a light-scattering transparent material.
  4. The luminaire (1) according to one of claims 1 to 3
    wherein the top side (31) and the underside (32) of the light distribution chambers (3) converge towards the side remote from the fluorescent tube.
  5. The luminaire (1) according to one of claims 1 to 4
    wherein the undersides (32) of the light distribution chambers (3) are of a convexly outwardly curved configuration.
  6. The luminaire (1) according to one of claims 1 to 5
    wherein the underside of the lighting louver element (4) is aligned with the adjacent lower edges of the light distribution chambers (3).
  7. The luminaire (1) according to one of claims 1 to 6
    wherein the elongate trough (6) is of a substantially rectangular cross-section with an upwardly disposed opening.
  8. The luminaire (1) according to one of claims 1 to 7
    wherein the elongate trough (6) widens upwardly in the upper region.
  9. The luminaire (1) according to one of claims 1 to 8
    wherein more than 60% of the light emitted by the fluorescent tubes (2) is guided into the light distribution chambers (3).
EP05007578A 2004-04-10 2005-04-07 Ergonomic ceiling luminaire Not-in-force EP1584861B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004017686A DE102004017686A1 (en) 2004-04-10 2004-04-10 Ergonomic ceiling light
DE102004017686 2004-04-10

Publications (3)

Publication Number Publication Date
EP1584861A2 EP1584861A2 (en) 2005-10-12
EP1584861A3 EP1584861A3 (en) 2007-11-14
EP1584861B1 true EP1584861B1 (en) 2011-08-03

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ID=34895562

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Application Number Title Priority Date Filing Date
EP05007578A Not-in-force EP1584861B1 (en) 2004-04-10 2005-04-07 Ergonomic ceiling luminaire

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US (1) US7232239B2 (en)
EP (1) EP1584861B1 (en)
AT (1) ATE519068T1 (en)
DE (1) DE102004017686A1 (en)

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Publication number Priority date Publication date Assignee Title
JP2014011043A (en) * 2012-06-29 2014-01-20 Toshiba Lighting & Technology Corp Lighting apparatus
US11940121B2 (en) 2022-08-30 2024-03-26 Abl Ip Holding Llc Light fixture for ceiling grid

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Also Published As

Publication number Publication date
EP1584861A2 (en) 2005-10-12
US7232239B2 (en) 2007-06-19
DE102004017686A1 (en) 2005-11-03
US20060139925A1 (en) 2006-06-29
EP1584861A3 (en) 2007-11-14
ATE519068T1 (en) 2011-08-15

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