EP3042120B1 - Arrangement for emitting light - Google Patents

Arrangement for emitting light Download PDF

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Publication number
EP3042120B1
EP3042120B1 EP14738851.6A EP14738851A EP3042120B1 EP 3042120 B1 EP3042120 B1 EP 3042120B1 EP 14738851 A EP14738851 A EP 14738851A EP 3042120 B1 EP3042120 B1 EP 3042120B1
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Prior art keywords
arrangement
reflector
light source
light
plane
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EP14738851.6A
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German (de)
French (fr)
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EP3042120A1 (en
Inventor
Elmar Dünschede
Burkhard Von Kloeden
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Zumtobel Lighting GmbH Germany
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Zumtobel Lighting GmbH Germany
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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
    • 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
    • F21S8/026—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
    • 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
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures
    • 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
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • 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
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to an arrangement for emitting light according to the preamble of claim 1, which is adapted to be attached to a in a first plane extending support element, such as a ceiling, and a surface, which in a second, substantially is perpendicular to the first plane extending second level, to illuminate. Furthermore, the present invention relates to a so-called wallwasher, which has such an arrangement for emitting light.
  • Wallwashers are luminaires that according to their name serve to illuminate areas of a wall. These are generally recessed ceiling luminaires, which are designed such that they do not primarily emit their light - in contrast to conventional luminaires of the room lighting - downwards but instead radiate strongly asymmetrically or laterally light around an area located obliquely below the luminaire to illuminate a wall. Usually, such wallwashers are therefore positioned in the ceiling area in the vicinity of a wall.
  • wallwashers as known from the prior art, usually have so-called channel reflectors. These reflectors are designed such that they cast the light in the direction of the wall to be illuminated, although it has been found that the brightness distributions, which are achieved with such channel reflectors, have a strong maximum in the central region of the surface to be illuminated. Starting from this maximum, a strong decrease in brightness occurs laterally or above and below it, with only relatively little scope for influencing the distribution.
  • the present invention is the task Reason to provide a novel arrangement for light output, which is suitable for use in a wall washer and opens up the possibility to efficiently influence the brightness distribution.
  • the possibility should be opened to illuminate a luminous area as evenly as possible.
  • the arrangement has a light source which initially emits light in a direction away from the surface to be illuminated.
  • a reflector is provided, which is arranged and designed such that the light rays originating from the light source and occurring on the reflector are reflected back substantially uniformly distributed onto the surface to be illuminated.
  • the light source is preferably aligned in a plane which is aligned substantially parallel to the second plane, ie to the surface to be illuminated. However, it is facing away from the surface to be illuminated due to the principle of back reflection.
  • the reflector itself is, as already mentioned, designed such that the surface to be illuminated is illuminated with a uniform brightness. It is in particular a so-called free-form reflector, which has the appropriate photometric properties. Further, the reflector is curved at least in one direction, preferably in two mutually perpendicular directions, so that in fact can be effectively influenced in both directions influence on the brightness distribution.
  • a suitably trained Wallwasher preferably be designed as a so-called ceiling light, which is thus mounted in the area of a ceiling, in which case only parts of the reflector in the fitted state of the lamp survive on the underside of the ceiling.
  • FIG. 1 shows schematically the construction of a Wallwashers with an inventive arrangement designed to emit light.
  • FIG. 1 The sectional view of Fig. 1 illustrates both the structure of the arrangement according to the invention and the lighting task to be solved by means of the inventive arrangement. Shown is the lateral area of a room 100, which is bounded by a wall 101 and a ceiling 102 at its top. In this lateral area of the ceiling 102 is a so-called wallwasher 50 with an inventively designed arrangement for light output, which is generally provided with the reference numeral 1.
  • the light emitted by the arrangement 1 is intended to illuminate a specific fixed area 110 of the wall 101, the area 110 preferably being to appear as uniform as possible over its entire height. same for Preferably also in the horizontal direction or in a direction perpendicular to the plane of the drawing, so that ultimately the area to be illuminated 110 as a whole, for example, is rectangular or elliptical in shape and should appear uniformly bright.
  • the arrangement according to the invention is constructed in a special way and has for this purpose as Essential components of a large-scale light source 10 and the light source 10 are opposed to a reflector 20.
  • the light source 10 is, in particular, an LED-based light source, preferably forming a single coherent light emission surface.
  • This color conversion material which is also used when using a single LED, serves on the one hand to influence the spectral distribution of the light emitted by the or the LEDs in a desired manner, for example, to achieve white light of a predetermined color temperature, on the other hand prevents in the case of a plurality of LEDs, these represent individual, essentially punctiform light sources, which could possibly lead to variations in the brightness of the area 110 to be illuminated.
  • the arrangement of the light source 10 is such that it is aligned substantially parallel to the wall 101 or to the area to be illuminated 110 and facing away from the wall 101, wherein for achieving a flat construction as possible, the LED chips preferably also in the so-called Chip-on-board technology is executed or mounted.
  • the light source 10 is further coupled to a heat sink, not shown, in order to dissipate the heat occurring during operation efficiently.
  • the arrangement and orientation of the light source 10 causes the emitted light beams initially do not hit the wall 101. Instead, they are first reflected back by the reflector 20 such that they ultimately illuminate the area 110 to be illuminated.
  • This principle of indirect illumination ensures that the light distribution on the wall 110 to be illuminated is determined primarily by the reflector 20, which in turn means that the brightness distribution can be changed in almost any desired manner by the corresponding design of the reflector 20.
  • the shape of the reflector 20 may be selected to achieve the above-mentioned desired uniform brightness of the area 110 to be illuminated.
  • the reflector 20 is preferably designed in the form of a so-called freeform reflector, that is, its shape is not based on a single, the entire shape of the reflector descriptive mathematical equation but was optimized by modeling individual surface sections such that the Lighting task is solved.
  • Another feature of the arrangement 1 according to the invention is also that, when used as a wall washer 50, as shown, the components of the luminaire can be arranged substantially sunk in the ceiling 102 of the room 100. Only the lower portion of the reflector 20 is in this case on the ceiling bottom 102 over, which gives the light in the assembled state beyond also an interesting appearance.
  • the diameter of the reflector 20 can be chosen according to the lighting task, a typical value for this is in the range of about 115 mm.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

Die vorliegende Erfindung betrifft eine Anordnung zur Lichtabgabe gemäß dem Oberbegriff des Anspruchs 1, welche dazu ausgebildet ist, an einem sich in einer ersten Ebene erstreckenden Trägerelement, beispielsweise einer Raumdecke, befestigt zu werden und eine Fläche, welche sich in einer zweiten, sich im Wesentlichen senkrecht zur ersten Ebene erstreckenden zweiten Ebene befindet, auszuleuchten. Ferner betrifft die vorliegende Erfindung einen sogenannten Wallwasher, der eine derartige Anordnung zur Lichtabgabe aufweist.The present invention relates to an arrangement for emitting light according to the preamble of claim 1, which is adapted to be attached to a in a first plane extending support element, such as a ceiling, and a surface, which in a second, substantially is perpendicular to the first plane extending second level, to illuminate. Furthermore, the present invention relates to a so-called wallwasher, which has such an arrangement for emitting light.

Als Wallwasher werden Leuchten bezeichnet, die entsprechend ihrem Namen dazu dienen, Bereiche einer Wand zu beleuchten. Es handelt sich in der Regel um Deckeneinbauleuchten, welche derart ausgebildet sind, dass sie ihr Licht - im Gegensatz zu herkömmlichen Leuchten der Raumbeleuchtung - nicht primär nach unten abgeben sondern stattdessen stark asymmetrisch bzw. seitlich Licht abstrahlen, um einen schräg unterhalb der Leuchte befindlichen Bereich einer Wand zu beleuchten. Üblicherweise werden deshalb derartige Wallwasher im Deckenbereich in der Nähe einer Wand positioniert.Wallwashers are luminaires that according to their name serve to illuminate areas of a wall. These are generally recessed ceiling luminaires, which are designed such that they do not primarily emit their light - in contrast to conventional luminaires of the room lighting - downwards but instead radiate strongly asymmetrically or laterally light around an area located obliquely below the luminaire to illuminate a wall. Usually, such wallwashers are therefore positioned in the ceiling area in the vicinity of a wall.

Zum Erzeugen der stark asymmetrischen Lichtabgabe weisen Wallwasher, wie sie aus dem Stand der Technik bekannt sind, üblicherweise sogenannte Rinnenreflektoren auf. Diese Reflektoren sind derart ausgestaltet, dass sie das Licht in Richtung der zu beleuchtenden Wand werfen, wobei sich allerdings gezeigt hat, das die Helligkeitsverteilungen, die mit derartigen Rinnenreflektoren erzielt werden, ein starkes Maximum im zentralen Bereich der zu beleuchtenden Fläche aufweisen. Ausgehend von diesem Maximum tritt ein starker Helligkeitsabfall seitlich bzw. ober- und unterhalb hiervon auf, wobei nur verhältnismäßig wenig Spielraum besteht, Einfluss auf die Verteilung zu nehmen.To produce the highly asymmetrical light output, wallwashers, as known from the prior art, usually have so-called channel reflectors. These reflectors are designed such that they cast the light in the direction of the wall to be illuminated, although it has been found that the brightness distributions, which are achieved with such channel reflectors, have a strong maximum in the central region of the surface to be illuminated. Starting from this maximum, a strong decrease in brightness occurs laterally or above and below it, with only relatively little scope for influencing the distribution.

Als alternative Möglichkeit zum Beleuchtung einer Wand wird in der US 2009/0296383 A1 ein System beschrieben, bei dem im Rahmen einer Rückreflexion die Wand beleuchtet wird. Die Lichtquelle in Form einzelner LEDs ist hierbei derart orientiert, dass das Licht zunächst in entgegengesetzter Richtung abgegeben wird, anschließend allerdings durch einen konkav gekrümmten Reflektor in Richtung der zu beleuchtenden Wand reflektiert wird.As an alternative way to illuminate a wall is in the US 2009/0296383 A1 describes a system in which the wall is illuminated in the context of a return reflection. The light source in the form of individual LEDs is in this case oriented such that the light is initially emitted in the opposite direction, but is subsequently reflected by a concave reflector in the direction of the wall to be illuminated.

Da üblicherweise eine möglichst gleichmäßige Ausleuchtung eines zu beleuchtenden Bereichs gewünscht ist, liegt der vorliegenden Erfindung die Aufgabenstellung zu Grunde, eine neuartige Anordnung zur Lichtabgabe anzugeben, welche zur Verwendung in einem Wallwasher geeignet ist und die Möglichkeit eröffnet, effizient Einfluss auf die Helligkeitsverteilung nehmen zu können. Dabei soll insbesondere die Möglichkeit eröffnet werden, eine leuchtende Fläche möglichst gleichmäßig zu beleuchten.Since usually the most uniform possible illumination of an area to be illuminated is desired, the present invention is the task Reason to provide a novel arrangement for light output, which is suitable for use in a wall washer and opens up the possibility to efficiently influence the brightness distribution. In particular, the possibility should be opened to illuminate a luminous area as evenly as possible.

Die Aufgabe wird durch eine Anordnung zur Lichtabgabe, welche die Merkmale des Anspruchs 1 aufweist, gelöst. Vorteilhafte Weiterbildungen sind Gegenstand der abhängigen Ansprüche.The object is achieved by an arrangement for emitting light, which has the features of claim 1. Advantageous developments are the subject of the dependent claims.

Erfindungsgemäß ist vorgesehen, dass die Anordnung eine Lichtquelle aufweist, welche zunächst Licht in eine der zu beleuchtenden Fläche abgewandte Richtung emittiert. Darüber hinaus ist ein Reflektor vorgesehen, der derart angeordnet und ausgebildet ist, dass die von der Lichtquelle stammenden und auf den Reflektor auftretenden Lichtstrahlen im Wesentlichen gleichmäßig verteilt auf die zu beleuchtende Fläche zurückreflektiert werden.According to the invention, the arrangement has a light source which initially emits light in a direction away from the surface to be illuminated. In addition, a reflector is provided, which is arranged and designed such that the light rays originating from the light source and occurring on the reflector are reflected back substantially uniformly distributed onto the surface to be illuminated.

Erfindungsgemäß wird also eine Anordnung zur Lichtabgabe vorgeschlagen, welche dazu ausgebildet ist, an einem sich in einer ersten Ebene erstreckenden Trägerelement, beispielsweise einer Raumdecke, befestigt zu werden und eine Fläche, welche sich in einer zweiten, sich im Wesentlichen senkrecht zur ersten Ebene erstreckenden zweiten Ebene befindet, auszuleuchten, wobei die Anordnung aufweist:

  • eine Lichtquelle, welche Licht in eine der zu beleuchtenden Fläche abgewandte Richtung emittiert, wobei die Lichtquelle eine einzige leuchtende Fläche bildet, die Lichtquelle durch mehrere LEDs gebildet ist, und wobei die mehreren LEDs von einem Farbkonversionsmaterial überdeckt sind, sowie
  • einen Reflektor, der derart angeordnet und ausgebildet ist, dass die von der Lichtquelle auftreffenden Lichtstrahlen im Wesentlichen gleichmäßig verteilt auf die zu beleuchtende Fläche reflektiert werden.
According to the invention, therefore, an arrangement for emitting light is proposed, which is designed to be fastened to a support element extending in a first plane, for example a ceiling, and a surface which extends in a second, substantially perpendicular to the first plane Plane is to illuminate, the arrangement comprising:
  • a light source which emits light in a direction away from the surface to be illuminated, wherein the light source forms a single luminous surface, the light source is formed by a plurality of LEDs, and wherein the plurality of LEDs are covered by a color conversion material, and
  • a reflector which is arranged and designed such that the light beams incident from the light source are reflected substantially uniformly distributed on the surface to be illuminated.

Bei der erfindungsgemäßen Lösung ist also vorgesehen, dass sämtliches von der Lichtquelle emittierte Licht nur im Rahmen einer Rückreflektion auf die zu beleuchtende Fläche gerichtet wird. Es hat sich gezeigt, dass hierbei deutlich effizienter Einfluss auf die Helligkeitsverteilung genommen werden kann und insbesondere die Möglichkeit eröffnet wird, im Falle der Nutzung der Anordnung in einem Wallwasher einen Wandbereich sehr gleichmäßig auszuleuchten.In the solution according to the invention, it is thus provided that all the light emitted by the light source is directed to the surface to be illuminated only in the context of a back reflection. It has been found that this can significantly more efficient influence on the brightness distribution can be taken and in particular the possibility is opened, in the case of using the arrangement in a wall washer illuminate a wall area very evenly.

Durch das Überdecken der LEDs mit dem Farbkonversionsmittel wird einerseits sichergestellt dass Licht in der gewünschten Farbe abgegeben wird, andererseits keine individuellen, einzelnen leuchtenden Lichtpunkte erkennbar sind, die zu lokalen Helligkeitsmaxima auf der zu beleuchtenden Fläche führen könnten. Die Lichtquelle ist dabei vorzugsweise in einer Ebene ausgerichtet, welche im Wesentlichen parallel zu der zweiten Ebene, also zu der zu beleuchtenden Fläche ausgerichtet ist. Sie ist allerdings aufgrund des Prinzips der Rückreflektion von der zu beleuchtenden Fläche abgewandt.By covering the LEDs with the color conversion agent on the one hand ensures that light is delivered in the desired color, on the other hand no individual, individual luminous points of light can be seen, which could lead to local brightness maxima on the surface to be illuminated. The light source is preferably aligned in a plane which is aligned substantially parallel to the second plane, ie to the surface to be illuminated. However, it is facing away from the surface to be illuminated due to the principle of back reflection.

Der Reflektor selbst ist wie bereits erwähnt derart ausgebildet, dass die zu beleuchtende Fläche mit einer gleichmäßigen Helligkeit ausgeleuchtet wird. Es handelt sich dabei insbesondere um einen sogenannten Freiformreflektor, der die entsprechenden lichttechnischen Eigenschaften aufweist. Ferner ist der Reflektor zumindest in einer Richtung, vorzugsweise in zwei aufeinander senkrecht stehenden Richtungen gekrümmt, so dass tatsächlich in beiden Richtungen effizient Einfluss auf die Helligkeitsverteilung genommen werden kann.The reflector itself is, as already mentioned, designed such that the surface to be illuminated is illuminated with a uniform brightness. It is in particular a so-called free-form reflector, which has the appropriate photometric properties. Further, the reflector is curved at least in one direction, preferably in two mutually perpendicular directions, so that in fact can be effectively influenced in both directions influence on the brightness distribution.

Die erfindungsgemäße Anordnung zur Lichtabgabe kommt wie bereits erwähnt insbesondere in sogenannten Wallwashern zum Einsatz. Dabei kann ein entsprechend ausgebildeter Wallwasher vorzugsweise als sogenannte Deckeneinbauleuchte ausgeführt sein, welche also im Bereich einer Decke montiert wird, wobei dann lediglich Teile des Reflektors im monierten Zustand der Leuchte über die Unterseite der Decke überstehen.As already mentioned, the arrangement according to the invention for emitting light is used in particular in so-called wallwashers. In this case, a suitably trained Wallwasher preferably be designed as a so-called ceiling light, which is thus mounted in the area of a ceiling, in which case only parts of the reflector in the fitted state of the lamp survive on the underside of the ceiling.

Nachfolgend soll die Erfindung anhand der beiliegenden Zeichnung näher erläutert werden.The invention will be explained in more detail with reference to the accompanying drawings.

Die einzige Fig. 1 zeigt hierbei schematisch den Aufbau eines Wallwashers mit einer erfindungsgemäßen ausgestalteten Anordnung zur Lichtabgabe.The only Fig. 1 shows schematically the construction of a Wallwashers with an inventive arrangement designed to emit light.

Die Schnittdarstellung von Fig. 1 verdeutlicht sowohl den Aufbau der erfindungsgemäßen Anordnung als auch die Beleuchtungsaufgabe, die mit Hilfe der erfindungsgemäßen Anordnung gelöst werden soll. Dargestellt ist der seitliche Bereich eines Raums 100, der durch ein Wand 101 sowie eine Decke 102 an dessen Oberseite begrenzt wird. In diesem seitlichen Bereich der Decke 102 befindet sich ein sogenannter Wallwasher 50 mit einer erfindungsgemäß ausgestalteten Anordnung zur Lichtabgabe, welche allgemein mit dem Bezugszeichen 1 versehen ist. Das von der Anordnung 1 abgegebene Licht soll dabei einen bestimmten festgelegten Bereich 110 der Wand 101 beleuchten, wobei der Bereich 110 vorzugsweise über seine gesamte Höhe hinweg möglichst in gleicher Helligkeit erscheinen soll. Gleiches gilt vorzugsweise auch in horizontaler Richtung bzw. in einer Richtung senkrecht zur Zeichenebene, so dass letztendlich der zu beleuchtende Bereich 110 insgesamt gesehen beispielsweise rechteckig oder ellipsenförmig ausgebildet ist und gleichmäßig hell erscheinen soll.The sectional view of Fig. 1 illustrates both the structure of the arrangement according to the invention and the lighting task to be solved by means of the inventive arrangement. Shown is the lateral area of a room 100, which is bounded by a wall 101 and a ceiling 102 at its top. In this lateral area of the ceiling 102 is a so-called wallwasher 50 with an inventively designed arrangement for light output, which is generally provided with the reference numeral 1. The light emitted by the arrangement 1 is intended to illuminate a specific fixed area 110 of the wall 101, the area 110 preferably being to appear as uniform as possible over its entire height. same for Preferably also in the horizontal direction or in a direction perpendicular to the plane of the drawing, so that ultimately the area to be illuminated 110 as a whole, for example, is rectangular or elliptical in shape and should appear uniformly bright.

Um diese angestrebte Helligkeitsverteilung auf der Wand 101 erzielen zu können, ist die erfindungsgemäße Anordnung in spezieller Weise aufgebaut und weist hierzu als wesentliche Komponenten eine möglichst großflächige Lichtquelle 10 sowie der Lichtquelle 10 gegenüberliegen einen Reflektor 20 auf.In order to achieve this desired brightness distribution on the wall 101, the arrangement according to the invention is constructed in a special way and has for this purpose as Essential components of a large-scale light source 10 and the light source 10 are opposed to a reflector 20.

Bei der Lichtquelle 10 handelt es sich insbesondere um eine Lichtquelle auf LED-Basis, wobei vorzugsweise eine einzige zusammenhängende Lichtemissionsfläche gebildet wird. Das heißt, es kommen eine oder mehrere LEDs zum Einsatz wobei bei der Verwendung mehrerer LEDs diese möglichst eng aneinander liegend angeordnet sein sollten und ferner vorzugsweise von einem Farbkonversionsmaterial gemeinsam überdeckt sind. Dieses Farbkonversionsmaterial, welches auch bei der Nutzung einer einzigen LED zum Einsatz kommt, dient einerseits dazu, die spektrale Verteilung des von der bzw. den LEDs abgegebenen Lichts in gewünschter Weise zu beeinflussen, um beispielsweise Weißlicht einer vorgegebenen Farbtemperatur zu erzielen, andererseits wird verhindert, dass im Falle mehrerer LEDs diese individuelle, im Wesentlichen punktförmige Lichtquellen darstellen, welche ggf. zu Variationen in der Helligkeit des zu beleuchtenden Bereichs 110 führen könnten.The light source 10 is, in particular, an LED-based light source, preferably forming a single coherent light emission surface. This means that one or more LEDs are used, wherein when using a plurality of LEDs, these should be arranged as close as possible to each other and, moreover, they are preferably jointly covered by a color conversion material. This color conversion material, which is also used when using a single LED, serves on the one hand to influence the spectral distribution of the light emitted by the or the LEDs in a desired manner, for example, to achieve white light of a predetermined color temperature, on the other hand prevents in the case of a plurality of LEDs, these represent individual, essentially punctiform light sources, which could possibly lead to variations in the brightness of the area 110 to be illuminated.

Die Anordnung der Lichtquelle 10 ist dabei derart, dass diese im Wesentlichen parallel zur Wand 101 bzw. zu dem zu beleuchtenden Bereich 110 ausgerichtet und von der Wand 101 abgewandt ist, wobei zum Erzielen einer möglichst flachen Bauweise die LED-Chips ferner vorzugsweise in der sogenannten Chip-on-Board Technologie ausgeführt bzw. montiert sind. Die Lichtquelle 10 ist ferner mit einem nicht näher dargestellten Kühlkörper gekoppelt, um die während des Betriebs auftretende Wärme effizient abführen zu können.The arrangement of the light source 10 is such that it is aligned substantially parallel to the wall 101 or to the area to be illuminated 110 and facing away from the wall 101, wherein for achieving a flat construction as possible, the LED chips preferably also in the so-called Chip-on-board technology is executed or mounted. The light source 10 is further coupled to a heat sink, not shown, in order to dissipate the heat occurring during operation efficiently.

Die Anordnung und Ausrichtung der Lichtquelle 10 führt dazu, dass die abgegebenen Lichtstrahlen zunächst nicht auf die Wand 101 treffen. Stattdessen werden diese erst durch den Reflektor 20 derart rückreflektiert, dass sie letztendlich den zu beleuchtenden Bereich 110 beleuchten. Durch dieses Prinzip der indirekten Beleuchtung ist gewährleistet, dass die Lichtverteilung auf der zu beleuchtenden Wand 110 in erster Linie durch den Reflektor 20 bestimmt wird, was wiederum bedeutet, dass durch die entsprechende Gestaltung des Reflektors 20 die Helligkeitsverteilung in nahezu beliebiger Weise verändert werden kann. Insbesondere kann die Form des Reflektors 20 derart gewählt werden, dass die oben erwähnte angestrebte gleichmäßige Helligkeit des zu beleuchtenden Bereichs 110 erzielt wird.The arrangement and orientation of the light source 10 causes the emitted light beams initially do not hit the wall 101. Instead, they are first reflected back by the reflector 20 such that they ultimately illuminate the area 110 to be illuminated. This principle of indirect illumination ensures that the light distribution on the wall 110 to be illuminated is determined primarily by the reflector 20, which in turn means that the brightness distribution can be changed in almost any desired manner by the corresponding design of the reflector 20. In particular, the shape of the reflector 20 may be selected to achieve the above-mentioned desired uniform brightness of the area 110 to be illuminated.

Der Reflektor 20 ist dabei vorzugsweise in Form eines sogenannten Freiformreflektors ausgebildet, das heißt, seine Form beruht nicht auf einer einzelnen, die gesamte Form des Reflektors beschreibenden mathematischen Gleichung sondern wurde durch Modellierung einzelner Flächenabschnitte derart optimiert, dass die Beleuchtungsaufgabe gelöst wird. Grundsätzlich weist hierbei der Reflektor 20 wie dargestellt eine Krümmung auf, wobei für den Fall, dass die zu beleuchtende Fläche 110 auch in horizontaler Richtung begrenzt sein soll bzw. auch in horizontaler Richtung Einfluss auf die Verteilung genommen werden soll, vorzugsweise auch in dieser Richtung eine entsprechende Krümmung des Reflektors 20 vorliegt. Letztendlich kann also mit dem dargestellten, verhältnismäßig einfachem Aufbau sehr effizient Einfluss auf die Helligkeitsverteilung genommen werden.The reflector 20 is preferably designed in the form of a so-called freeform reflector, that is, its shape is not based on a single, the entire shape of the reflector descriptive mathematical equation but was optimized by modeling individual surface sections such that the Lighting task is solved. Basically, in this case, the reflector 20, as shown, a curvature, and in the event that the surface to be illuminated 110 should be limited in the horizontal direction or in the horizontal direction influence on the distribution to be taken, preferably in this direction, a corresponding curvature of the reflector 20 is present. Ultimately, therefore, can be taken very efficiently influence the brightness distribution with the illustrated, relatively simple structure.

Eine weitere Besonderheit der erfindungsgemäßen Anordnung 1 besteht auch darin, dass im Falle der Nutzung als Wallwasher 50 wie dargestellt die Komponenten der Leuchte im Wesentlichen versenkt in der Decke 102 des Raums 100 angeordnet werden können. Lediglich der untere Abschnitt des Reflektors 20 steht hierbei über die Deckenunterseite 102 über, was der Leuchte im montierten Zustand darüber hinaus auch ein interessantes Erscheinungsbild verleiht. Der Durchmesser des Reflektors 20 kann dabei entsprechend der Beleuchtungsaufgabe gewählt werden, wobei ein typischer Wert hierfür im Bereich von etwa 115 mm liegt. Damit weist die erfindungsgemäße Anordnung zur Lichtabgabe also äußerst kompakte Bauweise auf, wodurch das Erscheinungsbild zusätzlich verbessert wird.Another feature of the arrangement 1 according to the invention is also that, when used as a wall washer 50, as shown, the components of the luminaire can be arranged substantially sunk in the ceiling 102 of the room 100. Only the lower portion of the reflector 20 is in this case on the ceiling bottom 102 over, which gives the light in the assembled state beyond also an interesting appearance. The diameter of the reflector 20 can be chosen according to the lighting task, a typical value for this is in the range of about 115 mm. Thus, the inventive arrangement for light output so extremely compact design, whereby the appearance is further improved.

Claims (6)

  1. An arrangement for emitting light (1) which is designed to be secured on a support element, for example, a room ceiling (102) which extends in a first plane and to illuminate a surface (110), which is located in a second plane that extends substantially perpendicularly to the first plane,
    wherein the arrangement (1) has
    • a light source (10), which emits light in a direction facing away from the surface (110) to be illuminated, wherein the light source (10) forms a single luminous surface, the light source is formed by a plurality of LEDs, and wherein the plurality of LEDs are jointly covered by a color conversion material, as well as
    • a reflector (20), which is arranged and designed such that the incident light beams from the light source (10) are substantially reflected in a uniformly distributed manner towards the surface (110) to be illuminated.
  2. An arrangement for emitting light according to Claim 1,
    characterized in
    that the light source (20) is aligned in a plane, which is substantially parallel to the second plane.
  3. An arrangement for emitting light according to one of the preceding claims,
    characterized in
    that the reflector (20) is designed as a free-form reflector.
  4. An arrangement for emitting light according to one of the preceding claims,
    characterized in
    that the reflector (20) has a curvature in at least one direction, preferably in two mutually perpendicular directions.
  5. A wall washer (50) with an arrangement for emitting light according to one of the preceding claims.
  6. A wall washer according to Claim 5,
    characterized in
    that said wall washer is designed as a recessed ceiling luminaire, wherein only parts of the reflector (20) protrude in the mounted state beyond the bottom of the ceiling.
EP14738851.6A 2013-07-16 2014-07-15 Arrangement for emitting light Active EP3042120B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013213870.9A DE102013213870A1 (en) 2013-07-16 2013-07-16 Arrangement for emitting light
PCT/EP2014/065103 WO2015007719A1 (en) 2013-07-16 2014-07-15 Arrangement for emitting light

Publications (2)

Publication Number Publication Date
EP3042120A1 EP3042120A1 (en) 2016-07-13
EP3042120B1 true EP3042120B1 (en) 2017-03-29

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EP (1) EP3042120B1 (en)
DE (1) DE102013213870A1 (en)
WO (1) WO2015007719A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015014711A1 (en) 2015-11-17 2017-05-18 Jochen C. Renz Acoustic module with novel lighting function
CN106641909A (en) * 2016-12-02 2017-05-10 深圳磊迈照明科技有限公司 Wall washer light and hidden type wall washer light system
CN107091420A (en) * 2017-05-18 2017-08-25 赛尔富电子有限公司 A kind of light distributing system of LED bar graph light fixture
AT522141B1 (en) * 2019-02-21 2020-10-15 Molto Luce Gmbh Device for illuminating several, separated areas

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Publication number Priority date Publication date Assignee Title
US4799136A (en) * 1987-05-29 1989-01-17 Guth Lighting Systems, Inc. Lighting fixture having concave shaped reflector and improved asymmetric light reflection system
DE10345567A1 (en) * 2003-09-29 2005-05-19 Erco Leuchten Gmbh Reflector luminaire, such as floor, ceiling or wall-mounted reflector luminaire, in particular stepped reflector luminaire
DE20315131U1 (en) * 2003-09-29 2005-02-10 Erco Leuchten Gmbh Reflector light, e.g. floor, ceiling or wall reflector light, especially stage reflector light, has reflector surface extending over elliptical section along ellipse outside apex, adjacent to ellipse focal point at which LED is arranged
US20090296383A1 (en) * 2005-05-25 2009-12-03 Koninklijke Philips Electronics N.V. Illumination system, shelf-lighting system and wall-washer lighting system
DE102006030646B4 (en) * 2006-04-21 2012-04-26 Siteco Beleuchtungstechnik Gmbh Interior light for illuminating a wall or ceiling
WO2008028517A1 (en) * 2006-09-07 2008-03-13 Osram Gesellschaft mit beschränkter Haftung Lamp with deflection device
US8038321B1 (en) * 2008-05-06 2011-10-18 Koninklijke Philips Electronics N.V. Color mixing luminaire
FR2950670B1 (en) * 2009-09-25 2011-10-28 Effilux DEVICE FOR INDIRECT LIGHTING OF A LIGHT EMITTING DIODE SURFACE
DE102010019436A1 (en) * 2010-05-05 2011-11-10 Christian Bartenbach Wall and / or ceiling light

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DE102013213870A1 (en) 2015-01-22
WO2015007719A1 (en) 2015-01-22
EP3042120A1 (en) 2016-07-13

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