EP1688662B1 - Luminaire - Google Patents

Luminaire Download PDF

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Publication number
EP1688662B1
EP1688662B1 EP06008103A EP06008103A EP1688662B1 EP 1688662 B1 EP1688662 B1 EP 1688662B1 EP 06008103 A EP06008103 A EP 06008103A EP 06008103 A EP06008103 A EP 06008103A EP 1688662 B1 EP1688662 B1 EP 1688662B1
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EP
European Patent Office
Prior art keywords
light
reflector
lamp
luminaire according
diffusor
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
EP06008103A
Other languages
German (de)
French (fr)
Other versions
EP1688662A2 (en
EP1688662A8 (en
EP1688662A3 (en
Inventor
Simona Loga
Georg Kempter
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.)
Zumtobel Lighting GmbH Austria
Original Assignee
Zumtobel Lighting GmbH Austria
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Filing date
Publication date
Application filed by Zumtobel Lighting GmbH Austria filed Critical Zumtobel Lighting GmbH Austria
Priority to EP08156549.1A priority Critical patent/EP1956289B1/en
Publication of EP1688662A2 publication Critical patent/EP1688662A2/en
Publication of EP1688662A8 publication Critical patent/EP1688662A8/en
Publication of EP1688662A3 publication Critical patent/EP1688662A3/en
Application granted granted Critical
Publication of EP1688662B1 publication Critical patent/EP1688662B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/01—Housings, e.g. material or assembling of housing parts
    • 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
    • F21S8/02—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
    • 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
    • F21V13/08—Combinations of only two kinds of elements the elements being filters or photoluminescent elements and reflectors
    • 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
    • F21V13/12—Combinations of only three kinds of elements
    • F21V13/14—Combinations of only three kinds of elements the elements being filters or photoluminescent elements, reflectors and refractors
    • 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
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/40—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity
    • 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
    • F21S8/06—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
    • 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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • 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
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/08—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for producing coloured light, e.g. monochromatic; for reducing intensity of light
    • 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
    • F21Y2113/00—Combination of light sources
    • 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
    • F21Y2113/00—Combination of light sources
    • F21Y2113/20—Combination of light sources of different form
    • 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 a ceiling lamp according to the preamble of claim 1.
  • a ceiling lamp of this kind as for example in the DE 44 43 916 A1 is described in is Fig. 3 shown.
  • a raster reflector 26 consisting of side reflectors and transverse slats is arranged, with the aid of which most of the light emitted by the lamp 21 is directed and emitted downwards without glare.
  • the use of such a raster reflector 26 is advantageous, for example, in luminaires in offices with multiple VDU workstations, since the downwardly radiated light is to some degree cross-faded and therefore can not cause reflections on the screens.
  • Fig. 3 also has a concave outer reflector 22, on which the light emitted from the lamp 21 laterally or upwards falls.
  • the area surrounding the lamp 21 and the raster reflector 26 is additionally illuminated, which, on the one hand, makes it possible to detect in a simple manner whether the luminaire is actually switched on or not, but on the other hand is perceived as much more pleasant by a viewer than the light of a pure grid lamp, in which the entire light is emitted only downwards, so that the ceiling area itself appears dark.
  • the outer reflector of such a luminaire on a certain and previously calculated precisely curvature, which reflects the light emitted by the lamp side in such a manner that the outer reflector appears uniformly bright.
  • this usually has the consequence that the outer reflector has a relatively high height and small width due to this predetermined curvature, so that the lamp is very high overall.
  • the outer reflector 22 were made flatter, this would mean that the luminance in the lamp 21 nearer to the outer reflector 22 is higher than at the edge of the reflector.
  • a uniform distribution of the brightness density is additionally supported by the fact that below the outer reflector 22, a translucent (opal) disc 23 is arranged. Overall, however, this luminaire has a relatively high height.
  • the ceiling lamp according to the invention has with the known lamp after Fig. 3 the following common features: a tubular gas discharge lamp, at least one - viewed from the area to be illuminated - arranged next to the lamp concave reflector, at least one - also seen from the area to be illuminated - next to the lamp but in front of the reflector arranged at least partially translucent diffuser and a light distribution element arranged in front of the lamp, viewed from the area to be illuminated, the diffuser and the reflector converging at their end remote from the lamp so as to enclose at least one light chamber, and the reflector closest to the lamp at least limited a light entrance surface.
  • the light entry surface is delimited by the diffuser, and the largest distance between the reflector and the diffuser is greater than the height of the light entry surface, and the ratio of the width of a light chamber to the largest distance between the reflector and the diffuser is at least 4: 1 ,
  • the ratio of the width of a light chamber to the height of the light entry surface or to the greatest distance between the reflector and the diffuser is between 4: 1 and 5: 1.
  • One after the DE 297 10 475 U known ceiling lamp has no housing.
  • a light entry into also provided light chambers via column in the raster reflector.
  • US 5,530,628 is a cabinet lamp known to emit light glare-free at an angle to the rear. It also has a flat light chamber whose Lichteinstrahl requirements is bounded by a reflector and a diffuser.
  • the light entry surfaces for the light chamber or light chambers are also formed by diffusers.
  • the light distribution element may be, e.g. a grid consisting of side reflectors and cross blades.
  • Other optical elements would be conceivable, which cause a more interesting appearance of the entire lamp, such as a teillichtyer emergees perforated plate or the like.
  • the lamp can also consist in that the reflector arranged laterally from the lamp is itself part-leak-permeable. It is then possible to arrange further light sources behind this partial translucent reflector which can be used to achieve special lighting effects.
  • the reflector is part-permeable to light
  • another refinement can also be to arrange another reflector behind the reflector, so that in each case a further light chamber is formed behind the light chambers. It is then possible to install additional light sources within these further light chambers, which can be controllable for example in their color and brightness. This may be, for example, controllable light-emitting diodes (LEDs). This can be achieved again a variety of different lighting effects.
  • LEDs controllable light-emitting diodes
  • optical elements are arranged within the light entry surfaces, which effect a color change of the light which has become on the reflector, so that the area surrounding the lamp appears in a slightly different color.
  • the luminaire according to the invention can be used in several different types of luminaires.
  • FIG. 1 Ceiling downlight shown, the individual components of the lamp within a box-shaped container 8 are arranged, which is sunk when mounting the lamp in the ceiling of the room to be illuminated.
  • the light source used is a rod-type gas discharge lamp 1, under which a grid 6 consisting of side reflectors and transverse slats is arranged, via which a large part of the light emitted by the lamp 1 is emitted downwards.
  • the concrete shapes of this grid 6 can be chosen so that the downwardly radiated light is transversely dazzled to a certain extent, so that the lamp is particularly suitable for the illumination of rooms with VDU workstations.
  • the grid 6 it is also possible to use a perforated plate, which is deposited, for example, with foils, or another optical element-for example a diffuser or a prismatic structure.
  • the rod-shaped gas discharge lamp 1 is further spanned by a concave reflector 2 whose side wings are arranged substantially adjacent to the lamp 1.
  • a diffuser 3 is further arranged, which includes two light chambers 4 together with the reflector 2 by the diffuser 3 and the reflector 2 both converge at their remote from the lamp 1 end.
  • the light entry surfaces for these light chambers 4 are delimited by the upper edge of the grid 6 and the reflector 2. Since the diffuser 3 arranged in front of the reflector 2 extends up to the side wall of the grid 6, it is avoided that the lamp 1 can be viewed directly from the side, thus producing glare effects.
  • the width (a) of the light chambers 4 is according to the invention at least four times as large as the height (b) of the light entry surfaces, ie the distance between the upper edge of the grid 6 and the reflector 2, so that the light overall very flat and visually can be designed attractively.
  • the size ratio is between 4: 1 and 5: 1.
  • the two light entry surfaces are formed by diffusers 5, which distribute the light thrown onto the reflector 2 evenly. Together with the front of the reflector 2 arranged diffuser 3 is thus causes the lamp 1 and the grid 6 surrounding area of the lamp appears uniformly bright, despite the low height of the lamp.
  • the diffusers 5 are preferably formed integrally with the diffuser 3.
  • the reflector 2 may be diffusely reflecting on its inside.
  • the reflector 2 has a shape such that the largest distance (c) between the reflector 2 and the diffuser 3 is greater than the height (b) of the light entry surfaces.
  • the ratio between the width (a) of the light chambers 4 to the height (b) of the light entry surfaces and the ratio of the width (a) of the light chambers 4 to this largest distance (c) is at least 4: 1, so that a flat design is ensured.
  • FIG. 2 shows a development of the lamp according to the invention, which is particularly suitable for recessed ceiling lights, the shape of the in Fig. 2 illustrated luminaire of the luminaire form in Fig. 1 equivalent.
  • the development consists in that a further concave reflector 12 is arranged behind the part 2 permeable reflector 2, which forms together with the reflector 2, two further light chambers 13, which are each arranged behind the original light chambers 4.
  • additional light chambers 13 further light sources are arranged, here in the form of printed circuit boards with a plurality of LEDs 14 arranged in a row.
  • These LED's 14 can be controllable with respect to their color and brightness, whereby a variety of different lighting effects can be achieved. Of course, other controllable light sources can be used.
  • the formation of the further light chambers 13 by the additional reflector 12 also in the other types of luminaires and luminaire shapes.
  • the luminaire according to the invention can thus be configured in a multiplicity of different forms of appearance. Since the height of the light chambers 4 is very low, it is also possible to form a total of very flat and visually appealing lights and give them new shapes with an attractive design. The further proposed measures, however, can be achieved despite the very flat design, that over the entire width of the reflector 2, a substantially uniform luminance is achieved, so that very attractive lighting effects can be achieved.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

The light fitting has a tubular gas discharge lamp (1), an adjacent concave reflector (2) and a partially-reflective light diffuser (3) positioned in front of the reflector, cooperating with the reflector for providing divergent light chambers (4) on either side of the lamp. The ratio between the width (a) of the light output surface of each divergent light chamber to the height (b) of its light input surface is at least 4:1.

Description

Die vorliegende Erfindung betrifft eine Deckenleuchte nach dem Oberbegriff des Anspruchs 1.The present invention relates to a ceiling lamp according to the preamble of claim 1.

Eine Deckenleuchte dieser Art, wie sie beispielsweise in der DE 44 43 916 A1 beschrieben ist, ist in Fig. 3 dargestellt. Dabei ist unterhalb einer länglichen Gasentladungslampe 21 ein aus Seitenreflektoren und Querlamellen bestehender Rasterreflektor 26 angeordnet, mit dessen Hilfe der größte Teil des von der Lampe 21 abgegebenen Lichts gerichtet und blendfrei nach unten abgestrahlt wird. Die Verwendung eines derartigen Rasterreflektors 26 ist beispielsweise bei Leuchten in Büros mit mehreren Bildschirmarbeitsplätzen von Vorteil, da das nach unten abgestrahlte Licht bis zu einem gewissen Grad querentblendet ist und daher auf den Bildschirmen keine Reflexionen verursachen kann.A ceiling lamp of this kind, as for example in the DE 44 43 916 A1 is described in is Fig. 3 shown. In this case, below an elongated gas discharge lamp 21, a raster reflector 26 consisting of side reflectors and transverse slats is arranged, with the aid of which most of the light emitted by the lamp 21 is directed and emitted downwards without glare. The use of such a raster reflector 26 is advantageous, for example, in luminaires in offices with multiple VDU workstations, since the downwardly radiated light is to some degree cross-faded and therefore can not cause reflections on the screens.

Die in Fig. 3 dargestellte Leuchte weist ferner einen konkav gekrümmten Außenreflektor 22 auf, auf den das von der Lampe 21 seitlich bzw. nach oben abgestrahlte Licht fällt. Auf diese Weise wird der die Lampe 21 und den Rasterreflektor 26 umgebende Bereich zusätzlich erhellt, was zum einen ermöglicht, auf einfache Weise zu erkennen, ob die Leuchte tatsächlich eingeschaltet ist oder nicht, andererseits aber auch von einem Betrachter als wesentlich angenehmer empfunden wird, als das Licht einer reinen Rasterleuchte, bei der das gesamte Licht lediglich nach unten abgestrahlt wird, so daß der Deckenbereich selbst dunkel erscheint.In the Fig. 3 also has a concave outer reflector 22, on which the light emitted from the lamp 21 laterally or upwards falls. In this way, the area surrounding the lamp 21 and the raster reflector 26 is additionally illuminated, which, on the one hand, makes it possible to detect in a simple manner whether the luminaire is actually switched on or not, but on the other hand is perceived as much more pleasant by a viewer than the light of a pure grid lamp, in which the entire light is emitted only downwards, so that the ceiling area itself appears dark.

Bei derartigen Lampen ist es in der Regel erwünscht, daß der die Lampe umgebende Bereich in einer gleichmäßigen Helligkeitsdichte erscheint. Dieses Problem wird beispielsweise auch in der DE 43 36 023 A1 behandelt. In der Regel weist daher der Außenreflektor einer derartigen Leuchte eine bestimmte und zuvor genau berechnete Krümmung auf, die das von der Lampe seitlich abgegebene Licht in einer derartigen Weise reflektiert, daß der Außenreflektor gleichmäßig hell erscheint. Dies hat allerdings dann meistens zur Folge, daß der Außenreflektor aufgrund dieser vorgegebenen Krümmung eine relativ große Höhe und geringe Breite aufweist, so daß die Leuchte insgesamt sehr hoch ist. Würde hingegen der Außenreflektor 22 flacher gestaltet werden, so hätte dies zur Folge, daß die Leuchtdichte in der Lampe 21 naheliegenden Bereichen des Außenreflektors 22 höher ist als am Rand des Reflektors. Bei der in Fig. 3 dargestellten Leuchte wird eine gleichmäßige Verteilung der Helligkeitsdichte zusätzlich dadurch unterstützt, daß unterhalb des Außenreflektors 22 eine durchscheinende (opale) Scheibe 23 angeordnet ist. Insgesamt weist jedoch auch diese Leuchte eine relativ große Höhe auf.In such lamps, it is usually desirable that the area surrounding the lamp appear in a uniform brightness density. This problem is for example also in the DE 43 36 023 A1 treated. In general, therefore, the outer reflector of such a luminaire on a certain and previously calculated precisely curvature, which reflects the light emitted by the lamp side in such a manner that the outer reflector appears uniformly bright. However, this usually has the consequence that the outer reflector has a relatively high height and small width due to this predetermined curvature, so that the lamp is very high overall. If, on the other hand, the outer reflector 22 were made flatter, this would mean that the luminance in the lamp 21 nearer to the outer reflector 22 is higher than at the edge of the reflector. At the in Fig. 3 a uniform distribution of the brightness density is additionally supported by the fact that below the outer reflector 22, a translucent (opal) disc 23 is arranged. Overall, however, this luminaire has a relatively high height.

Es ist Aufgabe der vorliegenden Erfindung, eine Leuchte anzugeben, die eine deutlich geringere Höhe als die bekannten Leuchten aufweist und hinsichtlich ihrer Form mehr Gestaltungsmöglichkeiten bietet.It is an object of the present invention to provide a lamp that has a significantly lower height than the known lights and offers more design options in terms of their shape.

Diese Aufgabe wird durch eine Leuchte, welche die Merkmale des Anspruches 1 aufweist, gelöst.This object is achieved by a luminaire having the features of claim 1.

Die erfindungsgemäße Deckenleuchte hat mit der bekannten Leuchte nach Fig. 3 folgende gemeinsame Merkmale: eine rohrförmige Gasentladungslampe, mindestens einen - von dem zu beleuchtenden Bereich aus gesehen - neben der Lampe angeordneten konkav gekrümmten Reflektor, mindestens einen - ebenfalls von dem zu beleuchtenden Bereich aus gesehen - neben der Lampe aber vor dem Reflektor angeordneten zumindest teillichtdurchlässigen Diffusor sowie ein - von dem zu beleuchtenden Bereich aus gesehen - vor der Lampe angeordneten Lichtverteiler-Element, wobei der Diffusor und der Reflektor an ihrem von der Lampe entfernten Ende derart zusammenlaufen, dass sie mindestens eine Lichtkammer einschließen, und wobei der Reflektor nächst der Lampe mindestens eine Lichteintrittsfläche begrenzt. Erfindungsgemäß wird die Lichteintrittsfläche außerdem von dem Diffusor begrenzt, ferner ist der größte Abstand zwischen dem Reflektor und dem Diffusor größer als die Höhe der Lichteintrittsfläche, und das Verhältnis der Breite einer Lichtkammer zu dem größten Abstand zwischen dem Reflektor und dem Diffusor beträgt mindestens 4:1.The ceiling lamp according to the invention has with the known lamp after Fig. 3 the following common features: a tubular gas discharge lamp, at least one - viewed from the area to be illuminated - arranged next to the lamp concave reflector, at least one - also seen from the area to be illuminated - next to the lamp but in front of the reflector arranged at least partially translucent diffuser and a light distribution element arranged in front of the lamp, viewed from the area to be illuminated, the diffuser and the reflector converging at their end remote from the lamp so as to enclose at least one light chamber, and the reflector closest to the lamp at least limited a light entrance surface. Moreover, according to the invention, the light entry surface is delimited by the diffuser, and the largest distance between the reflector and the diffuser is greater than the height of the light entry surface, and the ratio of the width of a light chamber to the largest distance between the reflector and the diffuser is at least 4: 1 ,

Gemäß einer bevorzugten Ausführungsform liegt das Verhältnis der Breite einer Lichtkammer zur Höhe der Lichteintrittsfläche bzw. zum größten Abstand zwischen dem Reflektor und dem Diffusor zwischen 4:1 und 5:1.According to a preferred embodiment, the ratio of the width of a light chamber to the height of the light entry surface or to the greatest distance between the reflector and the diffuser is between 4: 1 and 5: 1.

Eine nach der DE 297 10 475 U bekannte Deckenleuchte weist kein Gehäuse auf. Ein Lichteintritt in ebenfalls vorgesehene Lichtkammern erfolgt über Spalte im Rasterreflektor.One after the DE 297 10 475 U known ceiling lamp has no housing. A light entry into also provided light chambers via column in the raster reflector.

Nach der US 5,530,628 ist eine Schrankleuchte bekannt, die Licht blendfrei schräg nach hinten abstrahlen soll. Sie weist ebenfalls eine flache Lichtkammer auf, deren Lichteinstrahlfläche von einem Reflektor und einem Diffusor begrenzt ist.After US 5,530,628 is a cabinet lamp known to emit light glare-free at an angle to the rear. It also has a flat light chamber whose Lichteinstrahlfläche is bounded by a reflector and a diffuser.

Zum Erzielen einer gleichmäßigen Leuchtdichte über den Reflektorquerschnitt können mehrere zusätzliche Mittel an der Leuchte vorgesehen sein. Vorzugsweise werden z.B. die Lichteintrittsflächen für die Lichtkammer bzw. Lichtkammern ebenfalls durch Diffusoren gebildet.To achieve a uniform luminance over the reflector cross section several additional means may be provided on the lamp. Preferably, for example, the light entry surfaces for the light chamber or light chambers are also formed by diffusers.

Das Lichtverteiler-Element kann, z.B. ein aus Seitenreflektoren und Querlamellen bestehendes Raster sein. Auch andere optische Elemente wären denkbar, die ein interessanteres Aussehen der gesamten Leuchte bewirken, beispielsweise ein teillichtdurchlässiges Lochblech oder dergleichen.The light distribution element may be, e.g. a grid consisting of side reflectors and cross blades. Other optical elements would be conceivable, which cause a more interesting appearance of the entire lamp, such as a teillichtdurchlässiges perforated plate or the like.

Weiterbildungen der Leuchte können auch darin bestehen, daß der seitlich von der Lampe angeordnete Reflektor selbst teillichtdurchlässig ist. Es besteht dann die Möglichkeit, hinter diesem teillichtdurchlässigen Reflektor weitere Lichtquellen anzuordnen, die zum Erzielen besonderer Beleuchtungseffekte verwendet werden können.Further developments of the lamp can also consist in that the reflector arranged laterally from the lamp is itself part-leak-permeable. It is then possible to arrange further light sources behind this partial translucent reflector which can be used to achieve special lighting effects.

Ist der Reflektor teillichtdurchlässig, so kann eine andere Weiterbildung auch darin bestehen, hinter dem Reflektor einen weiteren Reflektor anzuordnen, so daß hinter den Lichtkammern jeweils eine weitere Lichtkammer gebildet wird. Es besteht dann die Möglichkeit, innerhalb dieser weiteren Lichtkammern zusätzliche Lichtquellen anzubringen, die beispielsweise in ihrer Farbe und Helligkeit steuerbar sein können. Hierbei kann es sich beispielsweise um steuerbare lichtemittierende Dioden (LED's) handeln. Dadurch können nochmals eine Vielzahl unterschiedlicher Beleuchtungseffekte erzielt werden.If the reflector is part-permeable to light, another refinement can also be to arrange another reflector behind the reflector, so that in each case a further light chamber is formed behind the light chambers. It is then possible to install additional light sources within these further light chambers, which can be controllable for example in their color and brightness. This may be, for example, controllable light-emitting diodes (LEDs). This can be achieved again a variety of different lighting effects.

Schließlich kann zum Erzielen eines weiteren neuen Beleuchtungseffekts auch vorgesehen sein, daß innerhalb der Lichteintrittsflächen optische Elemente angeordnet sind, die eine farbliche Veränderung des auf den Reflektor gewordenen Lichts bewirken, so daß der die Lampe umgebende Bereich in einer etwas anderen Farbe erscheint.Finally, to achieve a further new lighting effect, it may also be provided that optical elements are arranged within the light entry surfaces, which effect a color change of the light which has become on the reflector, so that the area surrounding the lamp appears in a slightly different color.

Die erfindungsgemäße Leuchte kann dabei in mehreren verschiedenen Leuchtenarten Verwendung finden.The luminaire according to the invention can be used in several different types of luminaires.

Im folgenden soll die Erfindung anhand der beiliegenden Zeichnung näher erläutert werden. Es zeigen:

Fig. 1
ein erstes Ausführungsbeispiel einer erfindungsgemäßen Deckeneinbauleuchte;
Fig. 2
ein weiteres Ausführungsbeispiel der erfindungsgemäßen Deckeneinbauleuchte; und
Fig. 3
eine aus dem Stand der Technik bekannte Leuchte.
In the following the invention will be explained in more detail with reference to the accompanying drawings. Show it:
Fig. 1
a first embodiment of a ceiling luminaire according to the invention;
Fig. 2
a further embodiment of the ceiling recessed luminaire according to the invention; and
Fig. 3
a known from the prior art lamp.

Bei der in Fig. 1 dargestellten Deckeneinbauleuchte sind die einzelnen Bauteile der Leuchte innerhalb eines kastenförmigen Behälters 8 angeordnet, der beim Montieren der Leuchte in der Decke des zu beleuchtenden Raumes versenkt wird. Als Lichtquelle dient eine stabförmige Gasentladungslampe 1, unter der ein aus Seitenreflektoren und Querlamellen bestehendes Raster 6 angeordnet ist, über den ein Großteil des von der Lampe 1 abgegebenen Lichts nach unten abgestrahlt wird. Dabei können die konkreten Formen dieses Rasters 6 so gewählt werden, daß das nach unten abgestrahlte Licht bis zu einem gewissen Grad querentblendet wird, so daß die Leuchte insbesondere zur Beleuchtung von Räumen mit Bildschirmarbeitsplätzen geeignet ist. Alternativ zu dem Rasters 6 kann auch ein Lochblech, welches z.B. mit Folien hinterlegt ist, oder ein anderes optisches Element - beispielsweise ein Diffusor oder eine Prismenstruktur - verwendet werden.At the in Fig. 1 Ceiling downlight shown, the individual components of the lamp within a box-shaped container 8 are arranged, which is sunk when mounting the lamp in the ceiling of the room to be illuminated. The light source used is a rod-type gas discharge lamp 1, under which a grid 6 consisting of side reflectors and transverse slats is arranged, via which a large part of the light emitted by the lamp 1 is emitted downwards. The concrete shapes of this grid 6 can be chosen so that the downwardly radiated light is transversely dazzled to a certain extent, so that the lamp is particularly suitable for the illumination of rooms with VDU workstations. As an alternative to the grid 6, it is also possible to use a perforated plate, which is deposited, for example, with foils, or another optical element-for example a diffuser or a prismatic structure.

Die stabförmige Gasentladungslampe 1 wird ferner von einem konkav gekrümmten Reflektor 2 überspannt, dessen Seitenflügel im wesentlichen neben der Lampe 1 angeordnet sind. Vor diesem Reflektor 2 und somit ebenfalls seitlich von der Lampe 1 ist ferner ein Diffusor 3 angeordnet, der gemeinsam mit dem Reflektor 2 zwei Lichtkammern 4 einschließt, indem der Diffusor 3 und der Reflektor 2 beide an ihrem von der Lampe 1 entfernten Ende zusammenlaufen. Dabei werden die Lichteintrittsflächen für diese Lichtkammern 4 von der Oberkante des Rasters 6 und dem Reflektor 2 begrenzt. Da der vor dem Reflektor 2 angeordnete Diffusor 3 sich bis zu der Seitenwand des Rasters 6 erstreckt, wird vermieden, daß die Lampe 1 seitlich gesehen direkt betrachtet werden kann und somit Blendeffekte entstehen.The rod-shaped gas discharge lamp 1 is further spanned by a concave reflector 2 whose side wings are arranged substantially adjacent to the lamp 1. In front of this reflector 2 and thus also laterally from the lamp 1, a diffuser 3 is further arranged, which includes two light chambers 4 together with the reflector 2 by the diffuser 3 and the reflector 2 both converge at their remote from the lamp 1 end. The light entry surfaces for these light chambers 4 are delimited by the upper edge of the grid 6 and the reflector 2. Since the diffuser 3 arranged in front of the reflector 2 extends up to the side wall of the grid 6, it is avoided that the lamp 1 can be viewed directly from the side, thus producing glare effects.

Die Breite (a) der Lichtkammern 4 ist erfindungsgemäß mindestens viermal so groß wie die Höhe (b) der Lichteintrittsflächen, also dem Abstand zwischen der Oberkante des Rasters 6 und dem Reflektor 2, so daß die Leuchte insgesamt sehr flach und optisch ansprechend gestaltet werden kann. Vorzugsweise liegt das Größenverhältnis zwischen 4:1 und 5:1.The width (a) of the light chambers 4 is according to the invention at least four times as large as the height (b) of the light entry surfaces, ie the distance between the upper edge of the grid 6 and the reflector 2, so that the light overall very flat and visually can be designed attractively. Preferably, the size ratio is between 4: 1 and 5: 1.

Zum Erzielen einer gleichmäßigen Leuchtdichte über die gesamte Breite des Reflektors 2 ist bei der in Fig. 1 dargestellten Leuchte ferner vorgesehen, daß die beiden Lichteintrittsflächen durch Diffusoren 5 gebildet werden, die das auf den Reflektor 2 geworfene Licht gleichmäßiger verteilen. Zusammen mit dem vor dem Reflektor 2 angeordneten Diffusor 3 wird somit bewirkt, daß der die Lampe 1 und das Raster 6 umgebende Bereich der Leuchte gleichmäßig hell erscheint, trotz der nur geringen Höhe der Leuchte. Dabei sind die Diffusoren 5 vorzugsweise zusammen mit dem Diffusor 3 einstückig ausgebildet. Ferner kann der Reflektor 2 an seiner Innenseite diffus reflektierend sein.To achieve a uniform luminance over the entire width of the reflector 2 is in the in Fig. 1 lamp provided further provided that the two light entry surfaces are formed by diffusers 5, which distribute the light thrown onto the reflector 2 evenly. Together with the front of the reflector 2 arranged diffuser 3 is thus causes the lamp 1 and the grid 6 surrounding area of the lamp appears uniformly bright, despite the low height of the lamp. In this case, the diffusers 5 are preferably formed integrally with the diffuser 3. Furthermore, the reflector 2 may be diffusely reflecting on its inside.

Bei der in Fig. 1 dargestellten Leuchte weist der Reflektor 2 eine derartige Form auf, daß der größte Abstand (c) zwischen dem Reflektor 2 und dem Diffusor 3 größer ist als die Höhe (b) der Lichteintrittsflächen. Das Verhältnis zwischen der Breite (a) der Lichtkammern 4 zur Höhe (b) der Lichteintrittsflächen und das Verhältnis der Breite (a) der Lichtkammern 4 zu diesem größten Abstand (c) beträgt mindestens 4:1, so daß eine flache Bauform sichergestellt ist.At the in Fig. 1 illustrated lamp, the reflector 2 has a shape such that the largest distance (c) between the reflector 2 and the diffuser 3 is greater than the height (b) of the light entry surfaces. The ratio between the width (a) of the light chambers 4 to the height (b) of the light entry surfaces and the ratio of the width (a) of the light chambers 4 to this largest distance (c) is at least 4: 1, so that a flat design is ensured.

Die Figur 2 zeigt eine Weiterbildung der erfindungsgemäßen Leuchte, die sich insbesondere bei Deckeneinbauleuchten anbietet, wobei die Form der in Fig. 2 dargestellten Leuchte der Leuchtenform in Fig. 1 entspricht. Die Weiterbildung besteht darin, daß hinter dem teillichtdurchlässig ausgestalteten Reflektor 2 eine weiterer konkaver Reflektor 12 angeordnet ist, der zusammen mit dem Reflektor 2 zwei weitere Lichtkammern 13 bildet, die jeweils hinter den ursprünglichen Lichtkammern 4 angeordnet sind. In diesen zusätzlichen Lichtkammern 13 sind weitere Lichtquellen angeordnet, hier in Form von Leiterplatinen mit mehreren in einer Reihe angeordneten LED's 14. Diese LED's 14 können bezüglich ihrer Farbe und Helligkeit steuerbar sein, wodurch eine Vielzahl unterschiedlicher Lichteffekte erzielt werden können. Selbstverständlich können auch andere steuerbare Lichtquellen zum Einsatz kommen. Darüber hinaus kann die Bildung der weiteren Lichtkammern 13 durch den zusätzlichen Reflektor 12 auch bei den anderen Leuchtentypen und Leuchtenformen erfolgen.The FIG. 2 shows a development of the lamp according to the invention, which is particularly suitable for recessed ceiling lights, the shape of the in Fig. 2 illustrated luminaire of the luminaire form in Fig. 1 equivalent. The development consists in that a further concave reflector 12 is arranged behind the part 2 permeable reflector 2, which forms together with the reflector 2, two further light chambers 13, which are each arranged behind the original light chambers 4. In these additional light chambers 13 further light sources are arranged, here in the form of printed circuit boards with a plurality of LEDs 14 arranged in a row. These LED's 14 can be controllable with respect to their color and brightness, whereby a variety of different lighting effects can be achieved. Of course, other controllable light sources can be used. In addition, the formation of the further light chambers 13 by the additional reflector 12 also in the other types of luminaires and luminaire shapes.

Die erfindungsgemäße Leuchte kann somit in einer Vielzahl von unterschiedlichen Erscheinungsformen ausgestaltet sein. Da die Höhe der Lichtkammern 4 sehr gering ist, besteht ferner die Möglichkeit, insgesamt sehr flache und optisch ansprechende Leuchten zu bilden und ihnen neue Formen mit einem ansprechenden Design zu geben. Durch die weiteren vorgeschlagenen Maßnahmen kann allerdings trotz der sehr flachen Bauform erreicht werden, daß über die gesamte Breite des Reflektors 2 eine im wesentlichen gleichmäßige Leuchtdichte erzielt wird, so daß auch sehr ansprechende Beleuchtungseffekte erzielt werden können.The luminaire according to the invention can thus be configured in a multiplicity of different forms of appearance. Since the height of the light chambers 4 is very low, it is also possible to form a total of very flat and visually appealing lights and give them new shapes with an attractive design. The further proposed measures, however, can be achieved despite the very flat design, that over the entire width of the reflector 2, a substantially uniform luminance is achieved, so that very attractive lighting effects can be achieved.

Claims (17)

  1. Ceiling recessed luminaire
    (a) having a tube-shaped gas discharge lamp (1),
    (b) having at least one concavely curved reflector (2) arranged - seen from the region to be illuminated - neighbouring the lamp (1),
    (c) having at least one at least partially light permeable diffusor (3) arranged - likewise seen from the region to be illuminated - neighbouring the lamp (1) but before the reflector (2), and
    (d) having a light distributor element (6) arranged - seen from the region to be illuminated - before the lamp (1), wherein
    (e) the diffusor (3) and the reflector (2) so run together at their ends away from the lamp (1) that they enclose at least one light chamber (4), whereby there is arranged a light chamber (4) at each side of the lamp (1), and
    (f) the reflector (2) next to the lamp (1) bounds at least one light entry surface,
    characterized
    (g) in that the light entry surface is further bounded by the diffusor,
    (h) in that the greatest spacing (c) between the reflector (2) and the diffusor (3) is greater than the height (b) of the light entry surface and the ratio of the width (a) of a light chamber (4) to the greatest spacing (c) between the reflector (2) and the diffusor (3) is at least 4:1,and
    (i) in that the individual components of the luminaire are arranged within a box like container (8).
  2. Luminaire according to claim 1,
    characterized in that,
    the ratio of the width (a) of a light chamber (4) to the height (b) of the light entry surface, if applicable to the greatest spacing (c) between the reflector (2) and the diffusor (3), lies between 4:1 and 5:1.
  3. Luminaire according to any preceding claim,
    characterized in that,
    there are provided on the luminaire additional means for the attainment of a uniform light density over the reflector cross-section.
  4. Luminaire according to claim 3,
    characterized in that,
    the at least one light entry surface is likewise a diffusor (5).
  5. Luminaire according to claim 2,
    characterized in that,
    the at least one light entry surface is formed by means of an optical element (5, 11) which is so formed that a higher proportion of the light from the lamp (1) falling into a light chamber (4) is deflected to more distantly lying regions of the reflector (2).
  6. Luminaire according to claim 3,
    characterized in that,
    the regions of the diffusor (3) lying more distantly from the lamp (1) have a higher light permeability than the regions lying nearer to the lamp (1).
  7. Luminaire according to claim 3,
    characterized in that,
    the regions of the reflector (2) lying more distantly from the lamp (1) have a higher level of reflectivity than the regions near to the lamp (1).
  8. Luminaire according to any preceding claim,
    characterized in that,
    seen from the region to be illuminated, a light distributor element (6) is arranged before the lamp (1).
  9. Luminaire according to claim 8,
    characterized in that,
    the light distributor element is a raster (6) consisting of side reflectors and transverse lamellae.
  10. Luminaire according to claim 8,
    characterized in that,
    there is arranged below the lamp (1) a partially light permeable perforated sheet.
  11. Luminaire according to any preceding claim,
    characterized in that,
    the reflector (2) is partially light permeable.
  12. Luminaire according to claim 11,
    characterized in that,
    there is arranged behind the partially light permeable reflector (2) at least one further lamp (7).
  13. Luminaire according to claim 11,
    characterized in that,
    there is arranged behind the partially light permeable reflector (2) a further concavely curved reflector which together with the partially light permeable reflector (2) forms at least one further light chamber arranged behind the light chamber or the light chambers (4), in which a further light source (14) is arranged.
  14. Luminaire according to claim 13,
    characterized in that,
    the additional light source involves a plurality of light emitting diodes (14).
  15. Luminaire according to claim 14,
    characterized in that,
    the light emitting diodes (14) are controllable with regard to their brightness and colour.
  16. Luminaire according to any preceding claim,
    characterized in that,
    the at least one light entry surface contains a colour filter (5).
  17. Luminaire according to claim 1,
    characterized in that,
    the ratio of the width (a) of a light chamber to the height (b) of a light entry surface is at least 4:1.
EP06008103A 2000-02-14 2001-02-06 Luminaire Expired - Lifetime EP1688662B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08156549.1A EP1956289B1 (en) 2000-02-14 2001-02-06 Lighting device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10006410A DE10006410A1 (en) 2000-02-14 2000-02-14 Recessed ceiling light fitting has concave reflector and light diffuser cooperating to provide divergent light chambers on either side of tubular gas discharge lamp
EP01923559A EP1255950B1 (en) 2000-02-14 2001-02-06 Lamp

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP01923559A Division EP1255950B1 (en) 2000-02-14 2001-02-06 Lamp

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP08156549.1A Division EP1956289B1 (en) 2000-02-14 2001-02-06 Lighting device

Publications (4)

Publication Number Publication Date
EP1688662A2 EP1688662A2 (en) 2006-08-09
EP1688662A8 EP1688662A8 (en) 2006-10-04
EP1688662A3 EP1688662A3 (en) 2007-01-24
EP1688662B1 true EP1688662B1 (en) 2008-07-23

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ID=7630798

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EP08156549.1A Expired - Lifetime EP1956289B1 (en) 2000-02-14 2001-02-06 Lighting device
EP03016446.1A Expired - Lifetime EP1353117B1 (en) 2000-02-14 2001-02-06 Lighting device
EP10185362.0A Withdrawn EP2264359A3 (en) 2000-02-14 2001-02-06 Lighting device
EP06008103A Expired - Lifetime EP1688662B1 (en) 2000-02-14 2001-02-06 Luminaire
EP01923559A Expired - Lifetime EP1255950B1 (en) 2000-02-14 2001-02-06 Lamp

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EP03016446.1A Expired - Lifetime EP1353117B1 (en) 2000-02-14 2001-02-06 Lighting device
EP10185362.0A Withdrawn EP2264359A3 (en) 2000-02-14 2001-02-06 Lighting device

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US (1) US6655819B2 (en)
EP (5) EP1956289B1 (en)
AT (2) ATE402373T1 (en)
AU (1) AU779271C (en)
CA (1) CA2399942C (en)
DE (3) DE10006410A1 (en)
DK (2) DK1255950T3 (en)
ES (2) ES2309856T3 (en)
NZ (1) NZ520431A (en)
WO (1) WO2001059364A1 (en)

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Publication number Publication date
CA2399942C (en) 2007-04-10
EP1688662A2 (en) 2006-08-09
DE10006410A1 (en) 2001-08-16
US20030007348A1 (en) 2003-01-09
ES2267750T3 (en) 2007-03-16
DE50110249D1 (en) 2006-08-03
DE50114158D1 (en) 2008-09-04
NZ520431A (en) 2004-11-26
EP1255950A1 (en) 2002-11-13
EP2264359A2 (en) 2010-12-22
EP2264359A3 (en) 2014-09-10
AU5030701A (en) 2001-08-20
EP1255950B1 (en) 2006-06-21
AU779271B2 (en) 2005-01-13
EP1353117A2 (en) 2003-10-15
US6655819B2 (en) 2003-12-02
DK1255950T3 (en) 2006-10-02
WO2001059364A1 (en) 2001-08-16
EP1956289B1 (en) 2015-08-19
EP1688662A8 (en) 2006-10-04
AU779271C (en) 2005-06-16
EP1956289A3 (en) 2008-10-15
EP1353117A3 (en) 2004-01-07
ES2309856T3 (en) 2008-12-16
EP1688662A3 (en) 2007-01-24
ATE331182T1 (en) 2006-07-15
ATE402373T1 (en) 2008-08-15
EP1956289A2 (en) 2008-08-13
DK1688662T3 (en) 2008-11-24
EP1353117B1 (en) 2016-11-30
CA2399942A1 (en) 2001-08-16

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