EP1275899A2 - Downlighter with lateral reflector - Google Patents

Downlighter with lateral reflector Download PDF

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Publication number
EP1275899A2
EP1275899A2 EP02014572A EP02014572A EP1275899A2 EP 1275899 A2 EP1275899 A2 EP 1275899A2 EP 02014572 A EP02014572 A EP 02014572A EP 02014572 A EP02014572 A EP 02014572A EP 1275899 A2 EP1275899 A2 EP 1275899A2
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EP
European Patent Office
Prior art keywords
reflector
reflector element
light
lamp
light source
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.)
Granted
Application number
EP02014572A
Other languages
German (de)
French (fr)
Other versions
EP1275899B1 (en
EP1275899A3 (en
Inventor
Klaus Vamberszky
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
Original Assignee
Zumtobel Staff GmbH
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Publication date
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Publication of EP1275899A2 publication Critical patent/EP1275899A2/en
Publication of EP1275899A3 publication Critical patent/EP1275899A3/en
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Publication of EP1275899B1 publication Critical patent/EP1275899B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/02—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
    • 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
    • F21V13/04—Combinations of only two kinds of elements the elements being 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
    • F21V7/0025—Combination of two or more reflectors for a single light source
    • 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
    • F21V7/0091—Reflectors for light sources using total internal reflection
    • 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
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • 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
    • F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
    • F21Y2103/37—U-shaped

Definitions

  • the present invention relates to a lamp according to the preamble of Claim 1.
  • a lamp of this type which has a pot-shaped main reflector, for the Radiation of an essentially narrow beam is set up for this purpose suitable for brightly illuminating relatively small areas.
  • Such a downlight predominantly radiates the light downwards so that above a certain angle with respect to the horizontal no or almost none Light leaves the lamp. This will make for people within the area to be illuminated Glare from the mostly extremely bright lamps.
  • This known recessed ceiling light 21 consists of a Luminaire housing 26, which sunk in the ceiling 25 of a room to be illuminated is.
  • the light source is in the example shown by a compact fluorescent lamp 22 formed, which is arranged within a cup-shaped reflector 23.
  • This The reflector 23 is initially designed such that the fluorescent lamp 22 emitted light rays to a relatively narrow and down directed light cones are bundled.
  • the reflector region 24 opposite this wall is deformed in such a way that the light beams L 24 to L 26 striking it are directed against the wall.
  • the reflector region 24 has a change in curvature such that the rays L 24 to L 26 incident on it are deflected more laterally in comparison to the rays L 21 to L 23 incident on the opposite region of the reflector 23 , This ensures that the upper wall area, which is otherwise in the shadow of the reflector 23, is also irradiated.
  • the reflector 23 on the wall to be illuminated cut open opposite side and deformed in the desired manner.
  • a cut-out reflector area can also be cut by a Additional reflector can be replaced with a different curvature. Both procedures however require an additional and costly work step in the Manufacture of the lamp.
  • FIG. 6 Another known possibility, which is shown in FIG. 6, is to arrange a reflective insert 34 in front of a partial area of the lateral circumference of the reflector 33.
  • the curvature of this reflective insert 34 is in turn such that the light beams L 34 to L 36 emitted by the lamp 32 and incident on it are laterally reflected in comparison to the light beams L 31 to L 33 incident on the opposite region of the reflector 33.
  • the disadvantage of this embodiment is that the circular opening per se 35 of the reflector 33 of the lamp 31 through the crescent-shaped underside 36 of the Reflector insert 34 is partially covered, so that the reflector opening 35 to a Art Ellipse is deformed, which is visually considered disadvantageous.
  • a third possibility is to join the illuminating wall opposite side of the reflector the reflector wall to be stepped, the individual steps amplifying the light against the Steer the wall.
  • the opening of the reflector is not changed, but the manufacture of such a reflector is relatively expensive.
  • the present invention is therefore based on the object of a possibility manage to direct part of the light emitted by a downlight laterally, whereby the desired solution should be characterized in that on the one hand is inexpensive and on the other hand visually appealing.
  • the Exit opening of the reflector can be changed as little as possible.
  • the present invention is characterized by a lamp which has the features of Has claim 1 solved.
  • This has a pot-shaped main reflector, which for the radiation of an essentially narrow beam is set up, wherein in front of a partial area of the lateral circumference of the main reflector Reflector element is arranged.
  • this is additional Reflector element made of a translucent material and is structured such that there is at least a portion of those striking the reflector element from the light source Rays of light totally reflected.
  • the total reflection can be achieved by an appropriate design of the surface of the Reflector element can be achieved, for example, at its the light source have a prism structure, in particular a groove structure.
  • the reflector element consists of a translucent plastic, so that e.g. can be produced by injection molding.
  • the solution according to the invention is characterized in that the additional Reflector element made in a simple manner and arranged in the main reflector can be.
  • a coating with a reflective material is not necessary so that the manufacturing cost is extremely low.
  • the The reflector opening of the main reflector is only insignificant due to the additional element affected.
  • the reflector element can with the Opening of the main reflector be flush but also consciously designed or be arranged so that it protrudes beyond the opening of the main reflector.
  • Fig. 1 shows a first embodiment of the present invention in the form of a Downlights, which is designed as a recessed ceiling light 1 and its light housing 5 is accordingly sunk in the ceiling 8 of a room to be illuminated.
  • a cup-shaped open at the bottom Main reflector 6, on the bottom side of a light source in the form of a Compact fluorescent lamp 2 is arranged inside the lamp housing 5 .
  • the base 3 of the fluorescent lamp 2 is in not shown attached to the lamp housing 5, from the back of the Socket 3 leads a power line 4 to the general power supply.
  • the compact fluorescent lamp 2 shown can, however, also be lamps other than Light source can be used.
  • the main reflector 6 is designed such that it from the compact fluorescent lamp 2nd generated light into a relatively narrow beam that shines down is directed, bundles.
  • an additional reflector element 7 is arranged in front of the circumference of the main reflector 6 opposite the wall, which is designed or curved in such a way that the light beams L 4 to L 6 which hit the reflector element 7 totally reflect and thereby compare with the light beams L 1 to L 3 striking the main reflector 6 are laterally deflected.
  • the reflector element 7 is concavely curved and arranged inclined somewhat at an angle to the reflector wall.
  • the opening of the main reflector 6 in In contrast to the known solution shown in Fig. 6 not covered, so that Viewing lamp 1 from below still appears circular. Since also part the light rays striking the reflector element 7 passes through it the area of the main reflector 6 behind the reflector element 7 is also illuminated, so that there is a visually appealing impression.
  • the overall impression of The lamp according to the invention is further improved in that the reflector element 7 itself consists of a translucent material.
  • a prism structure 9 on the side of the reflector element 7 facing away from the lamp 2 is provided.
  • a total reflection angle is defined by the relationship between the refractive index of the reflector element 7 and the refractive index of air. Light rays that hit the interface when exiting the reflector element 7 at a larger angle than the total reflection angle are totally reflected, as shown in FIG. 3 with the light rays L 7 to L 9 .
  • the shape of the elevations 10 is accordingly chosen such that a large part of the light rays striking the reflector element 7 from the lamp 2 is totally reflected on the rear side of the reflector element 7.
  • the groove-shaped structure of the rear side of the reflector element 7 shown here instead of the groove-shaped structure of the rear side of the reflector element 7 shown here, however, other prism structures would also be conceivable with which the desired total reflection is achieved.
  • the second embodiment of the lamp according to the invention shown in FIG. 4 differs from the embodiment in Fig. 1 in that Reflector element 7 protrudes significantly beyond the opening of the main reflector 6. This gives the lamp 1 an interesting appearance, the effect of However, reflector element 7 remains essentially unchanged. That means, also with In this exemplary embodiment, the main task of the reflector element 7 is to deflect the light rays of the lamp 2 laterally onto the wall to be illuminated.
  • the lamp of the invention is characterized in that the desired light deflection is achieved.
  • the means required for this are simple and inexpensive to manufacture.
  • the transparent reflector element gives the lamp has an interesting and visually appealing look.
  • the main reflector has other shapes instead of the one shown can accept. For example, it could also have the shape of an ellipse or a have a rectangular or elongated shape.

Abstract

The device has a light source (2), a pot-shaped main reflector (6) for emitting an essentially narrow light beam and an additional reflector element (7) in front of a sub-region of the lateral periphery of the main reflector. The additional reflector is made of transparent material and structured so that it totally reflects at least part of the light from the source incident on it.

Description

Die vorliegende Erfindung betrifft eine Leuchte nach dem Oberbegriff des Anspruches 1.The present invention relates to a lamp according to the preamble of Claim 1.

Eine Leuchte dieser Art, die einen topfförmigen Hauptreflektor aufweist, der für die Abstrahlung eines im wesentlichen schmalen Strahlenbündels eingerichtet ist, ist dazu geeignet, relativ kleine Flächen hell auszuleuchten. Üblicher Weise werden derartige Leuchten in einer Decke versenkt und dabei vertikal ausgerichtet, so daß sie das gesamte Licht nach unten abstrahlen. In der Fachsprache werden solche Leuchten daher allgemein als "Downlights" bezeichnet.A lamp of this type, which has a pot-shaped main reflector, for the Radiation of an essentially narrow beam is set up for this purpose suitable for brightly illuminating relatively small areas. Such are common Lights recessed in a ceiling and aligned vertically, so that they emit all light downwards. In technical terms, such lights are therefore commonly referred to as "downlights".

Ein solches Downlight strahlt das Licht überwiegend steil nach unten ab, so daß oberhalb eines bestimmten Winkels bezüglich der Horizontalen kein oder nahezu kein Licht die Leuchte verläßt. Hierdurch wird für Personen innerhalb des zu beleuchtenden Raumes eine Blendung durch die meist äußerst hellen Lampen vermieden.Such a downlight predominantly radiates the light downwards so that above a certain angle with respect to the horizontal no or almost none Light leaves the lamp. This will make for people within the area to be illuminated Glare from the mostly extremely bright lamps.

Wird ein solches Downlight in der Nähe einer Wand angeordnet, so ist es oftmals erwünscht, daß nicht nur der unterhalb der Leuchte liegende Bereich, sondern auch die benachbarte Wand ausgeleuchtet wird. Normalerweise würde jedoch der obere Teil der Wand, der nicht innerhalb des durch den Reflektor vorgegebenen Strahlungskegels liegt, dunkel bleiben, während der untere Bereich der Wand angestrahlt bzw. erhellt wird. Um daher die Wand über ihre im wesentlichen gesamte Höhe hinweg aufzuhellen, müssen an der Leuchte Maßnahmen vorgenommen werden, durch die ein seitliches Abstrahlen zumindest eines Teil des Lichts in Richtung der Wand erzielt wird.If such a downlight is placed near a wall, it is often wanted that not only the area below the lamp, but also the neighboring wall is illuminated. Usually, however, the upper part of the Wall that is not within the radiation cone specified by the reflector remains dark while the lower area of the wall is illuminated or illuminated becomes. Around the wall, therefore, over its essentially entire height to lighten, measures must be taken on the lamp by which a lateral radiation of at least part of the light is achieved in the direction of the wall.

Eine erste Lösung hierfür, die beispielsweise in der EP 0 802 368 A2 beschrieben ist, ist in Fig. 5 dargestellt. Diese bekannte Deckeneinbauleuchte 21 besteht aus einem Leuchtengehäuse 26, welches in der Decke 25 eines zu beleuchtenden Raumes versenkt ist. Die Lichtquelle wird im dargestellten Beispiel durch eine Kompaktleuchtstofflampe 22 gebildet, die innerhalb eines topfförmigen Reflektors 23 angeordnet ist. Dieser Reflektor 23 ist zunächst derart ausgelegt, daß die von der Leuchtstofflampe 22 abgegebenen Lichtstrahlen zu einem verhältnismäßig schmalen und nach unten gerichteten Lichtkegel gebündelt werden.A first solution for this, which is described for example in EP 0 802 368 A2, is shown in Fig. 5. This known recessed ceiling light 21 consists of a Luminaire housing 26, which sunk in the ceiling 25 of a room to be illuminated is. The light source is in the example shown by a compact fluorescent lamp 22 formed, which is arranged within a cup-shaped reflector 23. This The reflector 23 is initially designed such that the fluorescent lamp 22 emitted light rays to a relatively narrow and down directed light cones are bundled.

In dem dargestellten Beispiel befindet sich links unterhalb der Leuchte 21 eine nicht dargestellte Wand des Raumes, die ebenfalls erhellt werden soll. Hierzu ist der dieser Wand gegenüberliegende Reflektorbereich 24 derart verformt, daß die auf ihn treffenden Lichtstrahlen L24 bis L26 gegen die Wand gelenkt werden. Wie in Fig. 5 dargestellt ist, weist Reflektorbereich 24 eine derart veränderte Krümmung auf, daß die auf ihn auftreffenden Strahlen L24 bis L26 im Vergleich zu den auf den gegenüberliegenden Bereich des Reflektors 23 treffenden Strahlen L21 bis L23 stärker seitlich abgelenkt werden. Hierdurch wird erreicht, daß der ansonsten im Schatten des Reflektors 23 liegende obere Wandbereich ebenfalls bestrahlt wird.In the example shown there is a wall of the room, not shown, to the left below the lamp 21, which is also to be illuminated. For this purpose, the reflector region 24 opposite this wall is deformed in such a way that the light beams L 24 to L 26 striking it are directed against the wall. As shown in FIG. 5, the reflector region 24 has a change in curvature such that the rays L 24 to L 26 incident on it are deflected more laterally in comparison to the rays L 21 to L 23 incident on the opposite region of the reflector 23 , This ensures that the upper wall area, which is otherwise in the shadow of the reflector 23, is also irradiated.

In der Praxis wird der Reflektor 23 an der der zu beleuchtenden Wand gegenüberliegenden Seite aufgeschnitten und in der gewünschten Weise verformt. Alternativ dazu kann auch ein herausgeschnittener Reflektorbereich durch einen Zusatzreflektor mit einer anderen Krümmung ersetzt werden. Beide Vorgehensweise erfordern allerdings einen zusätzlichen und kostenintensiven Arbeitsschritt bei der Herstellung der Leuchte.In practice, the reflector 23 on the wall to be illuminated cut open opposite side and deformed in the desired manner. As an alternative to this, a cut-out reflector area can also be cut by a Additional reflector can be replaced with a different curvature. Both procedures however require an additional and costly work step in the Manufacture of the lamp.

Eine andere bekannte Möglichkeit, die in Fig. 6 dargestellt ist, besteht darin, vor einem Teilbereich des seitlichen Umfangs des Reflektors 33 einen reflektierenden Einsatz 34 anzuordnen. Die Krümmung dieses reflektierenden Einsatzes 34 ist wiederum derart, daß die von der Lampe 32 emittierten und auf ihn auftreffenden Lichtstrahlen L34 bis L36 im Vergleich zu den auf den gegenüberliegenden Bereich des Reflektors 33 auftreffenden Lichtstrahlen L31 bis L33 seitlich reflektiert werden.Another known possibility, which is shown in FIG. 6, is to arrange a reflective insert 34 in front of a partial area of the lateral circumference of the reflector 33. The curvature of this reflective insert 34 is in turn such that the light beams L 34 to L 36 emitted by the lamp 32 and incident on it are laterally reflected in comparison to the light beams L 31 to L 33 incident on the opposite region of the reflector 33.

Der Nachteil dieser Ausführungsform besteht darin, daß die an sich kreisrunde Öffnung 35 des Reflektors 33 der Leuchte 31 durch die sichelförmige Unterseite 36 des Reflektoreinsatzes 34 teilweise abgedeckt wird, so daß die Reflektoröffnung 35 zu einer Art Ellipse verformt wird, was optisch als nachteilig angesehen wird.The disadvantage of this embodiment is that the circular opening per se 35 of the reflector 33 of the lamp 31 through the crescent-shaped underside 36 of the Reflector insert 34 is partially covered, so that the reflector opening 35 to a Art Ellipse is deformed, which is visually considered disadvantageous.

Eine dritte - nicht-dargestellte Möglichkeit - besteht schließlich darin, an der der zu beleuchtenden Wand gegenüberliegenden Seite des Reflektors die Reflektorwandung stufenförmig zu gestalten, wobei die einzelnen Stufen das Licht verstärkt gegen die Wand lenken. Bei dieser Ausgestaltung wird die Öffnung des Reflektors zwar nicht verändert, die Herstellung eines solchen Reflektors ist jedoch verhältnismäßig teuer.Finally, a third possibility (not shown) is to join the illuminating wall opposite side of the reflector the reflector wall to be stepped, the individual steps amplifying the light against the Steer the wall. In this embodiment, the opening of the reflector is not changed, but the manufacture of such a reflector is relatively expensive.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, eine Möglichkeit zu schaffen, einen Teil des von einem Downlight abgestrahlten Lichts seitlich zu richten, wobei sich die angestrebte Lösung dadurch auszeichnen soll, daß sie einerseits preisgünstig und andererseits optisch ansprechend ist. Insbesondere soll die Austrittsöffnung des Reflektors möglichst wenig verändert werden. The present invention is therefore based on the object of a possibility manage to direct part of the light emitted by a downlight laterally, whereby the desired solution should be characterized in that on the one hand is inexpensive and on the other hand visually appealing. In particular, the Exit opening of the reflector can be changed as little as possible.

Die vorliegende Erfindung wird durch eine Leuchte, welche die Merkmale des Anspruches 1 aufweist, gelöst. Diese besitzt einen topfförmigen Hauptreflektor, der für die Abstrahlung eines im wesentlichen schmalen Strahlenbündels eingerichtet ist, wobei vor einem Teilbereich des seitlichen Umfangs des Hauptreflektors ein zusätzliches Reflektorelement angeordnet ist. Erfindungsgemäß besteht dieses zusätzliche Reflektorelement aus einem lichtdurchlässigen Material und ist derart strukturiert, daß es zumindest einen Teil der von der Lichtquelle auf das Reflektorelement treffenden Lichtstrahlen totalreflektiert.The present invention is characterized by a lamp which has the features of Has claim 1 solved. This has a pot-shaped main reflector, which for the radiation of an essentially narrow beam is set up, wherein in front of a partial area of the lateral circumference of the main reflector Reflector element is arranged. According to the invention, this is additional Reflector element made of a translucent material and is structured such that there is at least a portion of those striking the reflector element from the light source Rays of light totally reflected.

Die Totalreflexion kann durch eine entsprechende Ausgestaltung der Oberfläche des Reflektorelements erzielt werden, beispielsweise kann dieses an seiner der Lichtquelle abgewandten Seite eine Prismenstruktur, insbesondere eine Rillenstruktur aufweisen. Vorzugsweise besteht das Reflektorelement aus einem lichtdurchlässigen Kunststoff, so daß es z.B. mittels Spritzgießen hergestellt werden kann.The total reflection can be achieved by an appropriate design of the surface of the Reflector element can be achieved, for example, at its the light source have a prism structure, in particular a groove structure. Preferably, the reflector element consists of a translucent plastic, so that e.g. can be produced by injection molding.

Die erfindungsgemäße Lösung zeichnet sich dadurch aus, daß das zusätzliche Reflektorelement auf einfache Weise hergestellt und in dem Hauptreflektor angeordnet werden kann. Eine Beschichtung mit einem reflektierenden Material ist nicht notwendig, so daß die Herstellungskosten äußerst niedrig sind. Darüber hinaus wird die Reflektoröffnung des Hauptreflektors durch das zusätzliche Element nur unwesentlich beeinflußt. Da ferner ein Teil der von der Lichtquelle abgehenden Strahlen durch das Reflektorelement hindurchtreten und auf den Hauptreflektor treffen kann, wird ein optisch ansprechender Gesamteindruck erzielt. Das Reflektorelement kann mit der Öffnung des Hauptreflektors bündig sein aber auch bewußt derart ausgestaltet oder angeordnet werden, daß es über die Öffnung des Hauptreflektors hinaus ragt.The solution according to the invention is characterized in that the additional Reflector element made in a simple manner and arranged in the main reflector can be. A coating with a reflective material is not necessary so that the manufacturing cost is extremely low. In addition, the The reflector opening of the main reflector is only insignificant due to the additional element affected. Furthermore, since part of the rays emanating from the light source through the The reflector element can pass through and hit the main reflector visually appealing overall impression achieved. The reflector element can with the Opening of the main reflector be flush but also consciously designed or be arranged so that it protrudes beyond the opening of the main reflector.

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

Fig. 1
ein erstes Ausführungsbeispiel der erfindungsgemäßen Leuchte im seitlichen Schnitt;
Fig. 2
die Unterseite des in Fig. 1 dargestellten Ausführungsbeispiels;
Fig. 3
einen vergrößerten Ausschnitt des erfindungsgemäßen Reflektorelements;
Fig. 4
ein zweites Ausführungsbeispiel einer erfindungsgemäßen Leuchte; und
Fig. 5 und 6
bereits bekannte Leuchten.
The invention will be explained in more detail below with reference to the accompanying drawings. Show it:
Fig. 1
a first embodiment of the lamp according to the invention in lateral section;
Fig. 2
the underside of the embodiment shown in Fig. 1;
Fig. 3
an enlarged section of the reflector element according to the invention;
Fig. 4
a second embodiment of a lamp according to the invention; and
5 and 6
already known lights.

Fig. 1 zeigt ein erstes Ausführungsbeispiel der vorliegenden Erfindung in Form eines Downlights, das als Deckeneinbauleuchte 1 ausgestaltet ist und dessen Leuchtengehäuse 5 dementsprechend in der Decke 8 eines zu beleuchtenden Raumes versenkt ist. Innerhalb des Leuchtengehäuses 5 befindet sich ein nach unten offener topfförmiger Hauptreflektor 6, an dessen Bodenseite eine Lichtquelle in Form einer Kompaktleuchtstofflampe 2 angeordnet ist. Der Sockel 3 der Leuchtstofflampe 2 ist in nicht dargestellter Weise an dem Leuchtengehäuse 5 befestigt, von der Rückseite des Sockels 3 führt eine Stromleitung 4 zur allgemeinen Stromversorgung. Anstelle der hier dargestellten Kompaktleuchtstofflampe 2 können allerdings auch andere Lampen als Lichtquelle verwendet werden.Fig. 1 shows a first embodiment of the present invention in the form of a Downlights, which is designed as a recessed ceiling light 1 and its light housing 5 is accordingly sunk in the ceiling 8 of a room to be illuminated. Inside the lamp housing 5 there is a cup-shaped open at the bottom Main reflector 6, on the bottom side of a light source in the form of a Compact fluorescent lamp 2 is arranged. The base 3 of the fluorescent lamp 2 is in not shown attached to the lamp housing 5, from the back of the Socket 3 leads a power line 4 to the general power supply. Instead of here The compact fluorescent lamp 2 shown can, however, also be lamps other than Light source can be used.

Der Hauptreflektor 6 ist derart gestaltet, daß er das von der Kompaktleuchtstofflampe 2 erzeugte Licht zu einem verhältnismäßig schmalen Strahlenbündel, das nach unten gerichtet ist, bündelt.The main reflector 6 is designed such that it from the compact fluorescent lamp 2nd generated light into a relatively narrow beam that shines down is directed, bundles.

Wie auch in den Fig. 5 und 6 sei angenommen, daß sich links unterhalb der Leuchte 1 eine Wand befindet, welche zusätzlich von der Leuchte 1 erhellt werden soll. Hierfür ist erfindungsgemäß ein zusätzliches Reflektorelement 7 vor dem der Wand gegenüberliegenden Umfang des Hauptreflektors 6 angeordnet, das derart ausgestaltet bzw. gekrümmt ist, daß die von der Lampe 2 auf das Reflektorelement 7 treffenden Lichtstrahlen L4 bis L6 total reflektiert und dabei im Vergleich zu den auf den Hauptreflektor 6 treffenden Lichtstrahlen L1 bis L3 seitlich abgelenkt werden. Das Reflektorelement 7 ist hierzu konkav gekrümmt und gegenüber der Reflektorwand etwas geneigt angeordnet geneigt.As also in FIGS. 5 and 6, it is assumed that there is a wall to the left below the lamp 1, which is also to be illuminated by the lamp 1. For this purpose, according to the invention, an additional reflector element 7 is arranged in front of the circumference of the main reflector 6 opposite the wall, which is designed or curved in such a way that the light beams L 4 to L 6 which hit the reflector element 7 totally reflect and thereby compare with the light beams L 1 to L 3 striking the main reflector 6 are laterally deflected. For this purpose, the reflector element 7 is concavely curved and arranged inclined somewhat at an angle to the reflector wall.

Wie der Ansicht in Fig. 2 zu entnehmen ist, wird die Öffnung des Hauptreflektors 6 im Gegensatz zu der in Fig. 6 dargestellten bekannten Lösung nicht abgedeckt, so daß die Leuchte 1 von unten her betrachten nach wie vor kreisrund erscheint. Da ferner ein Teil der auf das Reflektorelement 7 treffenden Lichtstrahlen durch dieses hindurchtritt, wird auch der hinter dem Reflektorelement 7 liegende Bereich des Hauptreflektors 6 erhellt, so daß sich ein optisch ansprechender Eindruck ergibt. Der Gesamteindruck der erfindungsgemäßen Leuchte wird ferner dadurch verbessert, daß das Reflektorelement 7 selbst aus einem lichtdurchlässigen Material besteht.As can be seen from the view in Fig. 2, the opening of the main reflector 6 in In contrast to the known solution shown in Fig. 6 not covered, so that Viewing lamp 1 from below still appears circular. Since also part the light rays striking the reflector element 7 passes through it the area of the main reflector 6 behind the reflector element 7 is also illuminated, so that there is a visually appealing impression. The overall impression of The lamp according to the invention is further improved in that the reflector element 7 itself consists of a translucent material.

Die Totalreflexion der Lichtstrahlen wird dadurch erreicht, daß an der Rückseite, also an der der Lampe 2 abgewandten Seite des Reflektorelements 7 eine Prismenstruktur 9 vorgesehen ist. Wie der vergrößerten Darstellung in Fig. 3 zu entnehmen ist, wird diese Mikroprismenstruktur 9 durch im Querschnitt dreieckförmige Erhebungen 10 gebildet, welche insgesamt eine Rillenstruktur bilden.The total reflection of the light rays is achieved in that on the back, that is a prism structure 9 on the side of the reflector element 7 facing away from the lamp 2 is provided. As can be seen from the enlarged representation in FIG. 3, this is Microprism structure 9 formed by elevations 10 which are triangular in cross section, which together form a groove structure.

Durch das Verhältnis zwischen dem Brechungsindex des Reflektorelements 7 und dem Brechungsindex von Luft wird ein Totalreflexionswinkel definiert. Lichtstrahlen, die beim Austreten aus dem Reflektorelement 7 unter einem größeren Winkel als dem Totalreflexionswinkel auf die Grenzfläche treffen, werden dabei total reflektiert, wie dies in Fig. 3 anhand der Lichtstrahlen L7 bis L9 dargestellt ist. Die Form der Erhebungen 10 ist dementsprechend derart gewählt, daß ein Großteil der von der Lampe 2 auf das Reflektorelement 7 treffenden Lichtstrahlen an der Rückseite des Reflektorelements 7 totalreflektiert wird. Anstelle der hier dargestellten rillenförmigen Struktur der Rückseite des Reflektorelements 7 wären allerdings auch andere Prismenstrukturen denkbar, mit denen die gewünschte Totalreflexion erzielt wird.A total reflection angle is defined by the relationship between the refractive index of the reflector element 7 and the refractive index of air. Light rays that hit the interface when exiting the reflector element 7 at a larger angle than the total reflection angle are totally reflected, as shown in FIG. 3 with the light rays L 7 to L 9 . The shape of the elevations 10 is accordingly chosen such that a large part of the light rays striking the reflector element 7 from the lamp 2 is totally reflected on the rear side of the reflector element 7. Instead of the groove-shaped structure of the rear side of the reflector element 7 shown here, however, other prism structures would also be conceivable with which the desired total reflection is achieved.

Das in Fig. 4 dargestellte zweite Ausführungsbeispiel der erfindungsgemäßen Leuchte unterscheidet sich von dem Ausführungsbeispiel in Fig. 1 dadurch, daß das Reflektorelement 7 deutlich über die Öffnung des Hauptreflektors 6 hinausragt. Hierdurch erhält die Leuchte 1 ein interessantes Aussehen, die Wirkung des Reflektorelements 7 bleibt allerdings im wesentlichen unverändert. D.h., auch bei diesem Ausführungsbeispiel besteht die Hauptaufgabe des Reflektorelements 7 darin, die Lichtstrahlen der Lampe 2 auf die zu beleuchtende Wand seitlich abzulenken.The second embodiment of the lamp according to the invention shown in FIG. 4 differs from the embodiment in Fig. 1 in that Reflector element 7 protrudes significantly beyond the opening of the main reflector 6. This gives the lamp 1 an interesting appearance, the effect of However, reflector element 7 remains essentially unchanged. That means, also with In this exemplary embodiment, the main task of the reflector element 7 is to deflect the light rays of the lamp 2 laterally onto the wall to be illuminated.

Die erfindungsgemäße Leuchte zeichnet sich dadurch aus, daß auf einfache Weise die gewünschte Lichtumlenkung erzielt wird. Die hierzu benötigten Mittel sind einfach und kostengünstig herzustellen. Darüber hinaus verleiht das durchsichtige Reflektorelement der Leuchte ein interessantes und optisch ansprechendes Aussehen. Abschließend ist zu bemerken, daß der Hauptreflektor anstelle der dargestellten Form auch andere Formen annehmen kann. Beispielsweise könnte er auch die Form einer Ellipse oder eine rechteckige bzw. längliche Form aufweisen.The lamp of the invention is characterized in that the desired light deflection is achieved. The means required for this are simple and inexpensive to manufacture. In addition, the transparent reflector element gives the lamp has an interesting and visually appealing look. In conclusion is too notice that the main reflector has other shapes instead of the one shown can accept. For example, it could also have the shape of an ellipse or a have a rectangular or elongated shape.

Claims (8)

Leuchte (1) mit einer Lichtquelle (2) und einem topfförmigen Hauptreflektor (6), der für die Abstrahlung eines im wesentlichen schmalen Strahlenbündels eingerichtet ist,
wobei vor einem Teilbereich des seitlichen Umfangs des Hauptreflektors (6) ein zusätzliches Reflektorelement (7) angeordnet ist,
dadurch gekennzeichnet, daß dieses Reflektorelement (7) aus einem lichtdurchlässigem Material besteht und derart strukturiert ist, daß es zumindest einen Teil der von der Lichtquelle (2) auf das Reflektorelement (7) treffenden Lichtstrahlen (L4 - L6) totalreflektiert.Luminaire (1) with a light source (2) and a cup-shaped main reflector (6), which is set up for emitting an essentially narrow beam,
an additional reflector element (7) being arranged in front of a partial area of the lateral circumference of the main reflector (6),
characterized in that this reflector element (7) consists of a translucent material and is structured such that it totally reflects at least some of the light rays (L 4 - L 6 ) incident on the reflector element (7) from the light source (2). Leuchte nach Anspruch 1,
dadurch gekennzeichnet, daß die der Lichtquelle (2) abgewandte Oberfläche des Reflektorelements (7) derart geformt ist, daß ein Teil der Lichtstrahlen (L4 - L6) beim Verlassen des Reflektorelements (7) totalreflektiert wird.Luminaire according to claim 1,
characterized in that the surface of the reflector element (7) facing away from the light source (2) is shaped in such a way that a part of the light rays (L 4 - L 6 ) is totally reflected when leaving the reflector element (7). Leuchte nach Anspruch 2,
dadurch gekennzeichnet, daß das Reflektorelement (7) an seiner der Lichtquelle (2) abgewandten Seite eine Prismenstruktur (9) aufweist.Luminaire according to claim 2,
characterized in that the reflector element (7) has a prism structure (9) on its side facing away from the light source (2). Leuchte nach Anspruch 3,
dadurch gekennzeichnet, daß das Reflektorelement (7) an seiner der Lichtquelle (2) abgewandten Seite eine Rillenstruktur aufweist.Luminaire according to claim 3,
characterized in that the reflector element (7) has a groove structure on its side facing away from the light source (2). Leuchte nach einem der vorherigen Ansprüche,
dadurch gekennzeichnet, daß das Reflektorelement (7) aus lichtdurchlässigem Kunststoff besteht.Luminaire according to one of the preceding claims,
characterized in that the reflector element (7) consists of translucent plastic. Leuchte nach einem der vorherigen Ansprüche,
dadurch gekennzeichnet, daß das Reflektorelement (7) über die Öffnung des Hauptreflektors (6) hinausragt.Luminaire according to one of the preceding claims,
characterized in that the reflector element (7) projects beyond the opening of the main reflector (6). Leuchte nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, daß das Reflektorelement (7) mit der Öffnung des Hauptreflektors (6) bündig ist. Luminaire according to one of claims 1 to 5,
characterized in that the reflector element (7) is flush with the opening of the main reflector (6). Leuchte nach einem der vorherigen Ansprüche,
dadurch gekennzeichnet, daß es sich um eine Deckeneinbauleuchte (1) handelt.Luminaire according to one of the preceding claims,
characterized in that it is a recessed ceiling light (1).
EP02014572A 2001-07-10 2002-07-01 Downlighter with lateral reflector Expired - Lifetime EP1275899B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10133360 2001-07-10
DE10133360A DE10133360A1 (en) 2001-07-10 2001-07-10 Downlight with side reflector

Publications (3)

Publication Number Publication Date
EP1275899A2 true EP1275899A2 (en) 2003-01-15
EP1275899A3 EP1275899A3 (en) 2006-10-11
EP1275899B1 EP1275899B1 (en) 2009-09-16

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ID=7691193

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Application Number Title Priority Date Filing Date
EP02014572A Expired - Lifetime EP1275899B1 (en) 2001-07-10 2002-07-01 Downlighter with lateral reflector

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EP (1) EP1275899B1 (en)
AT (1) ATE443228T1 (en)
DE (2) DE10133360A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1586815A3 (en) * 2004-04-15 2005-11-16 iGUZZINI ILLUMINAZIONE S.p.A. Reflector assembly with modifiable reflective surface in a lighting apparatus
NL1032767C2 (en) * 2006-10-30 2008-05-06 Spanninga Metaal Device for providing lighting along a surface.
CN104214676A (en) * 2013-05-29 2014-12-17 海洋王（东莞）照明科技有限公司 Gas discharge lamp and reflection assembly thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0802368A2 (en) 1996-04-18 1997-10-22 ZUMTOBEL LICHT GmbH Luminaire compromising - in particular a small-volume -lamp

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Publication number Priority date Publication date Assignee Title
DE185591C (en) *
DE8208617U1 (en) * 1982-03-26 1982-08-12 Eurolicht Lichtarchitectuur B.V., 5070 Naarden REFLECTOR FOR A LIGHT SOURCE
DE3436778A1 (en) * 1984-01-27 1985-08-01 Westfälische Metall Industrie KG Hueck & Co, 4780 Lippstadt Luminaire for large-area and uniform illumination of living and working spaces or the like
DE4237192A1 (en) * 1992-11-04 1994-05-05 Hoffmeister Leuchten Kg Electric lighting fitting with composite reflector for illumination control - has opposite facing sides of concave reflector formed respectively as concentric steps and smooth cone for additive reduced glare flux control.
US5535110A (en) * 1995-02-16 1996-07-09 Cooper Industries, Inc. Ceiling mounted wallwash light fixture

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0802368A2 (en) 1996-04-18 1997-10-22 ZUMTOBEL LICHT GmbH Luminaire compromising - in particular a small-volume -lamp

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1586815A3 (en) * 2004-04-15 2005-11-16 iGUZZINI ILLUMINAZIONE S.p.A. Reflector assembly with modifiable reflective surface in a lighting apparatus
NL1032767C2 (en) * 2006-10-30 2008-05-06 Spanninga Metaal Device for providing lighting along a surface.
EP1918634A1 (en) * 2006-10-30 2008-05-07 Spanninga Metaal B.V. Device for providing lighting along a ground surface
CN104214676A (en) * 2013-05-29 2014-12-17 海洋王（东莞）照明科技有限公司 Gas discharge lamp and reflection assembly thereof
CN104214676B (en) * 2013-05-29 2016-09-07 海洋王（东莞）照明科技有限公司 Gas-discharge lamp and reflection subassembly thereof

Also Published As

Publication number Publication date
ATE443228T1 (en) 2009-10-15
EP1275899B1 (en) 2009-09-16
DE10133360A1 (en) 2003-01-23
DE50213844D1 (en) 2009-10-29
EP1275899A3 (en) 2006-10-11

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