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EP2734782B1 - Arrangement for emitting light - Google Patents

Arrangement for emitting light Download PDF

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Publication number
EP2734782B1
EP2734782B1 EP12737278.7A EP12737278A EP2734782B1 EP 2734782 B1 EP2734782 B1 EP 2734782B1 EP 12737278 A EP12737278 A EP 12737278A EP 2734782 B1 EP2734782 B1 EP 2734782B1
Authority
EP
European Patent Office
Prior art keywords
light
lenses
arrangement
reflector
emitting light
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.)
Active
Application number
EP12737278.7A
Other languages
German (de)
French (fr)
Other versions
EP2734782A2 (en
Inventor
Stephan Ebner
Patrik Gassner
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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Publication date
Application filed by Zumtobel Lighting GmbH Austria filed Critical Zumtobel Lighting GmbH Austria
Priority to PL12737278T priority Critical patent/PL2734782T3/en
Publication of EP2734782A2 publication Critical patent/EP2734782A2/en
Application granted granted Critical
Publication of EP2734782B1 publication Critical patent/EP2734782B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • F21S4/28—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/007—Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • 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
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to an arrangement for emitting light with a plurality of LED light sources and a plurality of lenses arranged in the light emission direction after the LED light sources.
  • LED lamps In elongated luminaires or arrangements for the delivery of light, which are used, for example, in the commercial sector, fluorescent lamps have hitherto frequently been used as the light source.
  • the progressive development of LEDs now leads more and more to the fact that, for example, fluorescent lamps are replaced by corresponding LEDs. This results on the one hand from the fact that LED light sources have considerable advantages in terms of life and energy efficiency compared to conventional bulbs.
  • the luminous intensities that can be achieved with the help of LEDs are now sufficiently high so that LED light sources can easily replace conventional light sources such as fluorescent lamps.
  • the LED light sources are associated with lenses which are arranged in the emission direction after the LED light sources.
  • Several such lenses are in this case joined together to form an elongate optical element, wherein preferably each LED light source is assigned in each case exactly one lens of the optical element.
  • Fig. 1 now three differently configured optical elements 2 are shown. Such optical elements 2 are in this case usually produced by injection molding.
  • Fig. 2 and 4 go two possible light intensity distribution curves in Fig. 1 shown lenses, the curves shown there are the values in the C0 / C180 plane, ie in the transverse direction to the in Fig. 1 shown optical elements 2 correspond.
  • light intensity distribution curve has two separate wings, each having a tip region at 30 ° and adjoining flanking areas on both sides, where the light intensity drops to a much lower value than in the tip region, wherein one of the flanks to the angle range around 0 ° out drops.
  • Such a light intensity distribution is, for example, then advantageous if a corresponding arrangement for emitting light along a corridor is arranged, each of which has shelves on the right and left, which are to be illuminated by the arrangement for emitting light accordingly.
  • Fig. 3 Now, such an arrangement for light emission 1 is shown, which has a housing 3 with a light exit opening, wherein in the housing 3, the LED light sources 4 are arranged and the assembled together to the optical element 2 lenses 6, the housing 3 in the light emission direction.
  • Fig. 4 is now compared to Fig. 2 a slightly different light intensity distribution curve of the lenses 6 shown. Through this, a very wide illumination of the area below the arrangement for light emission 1 is achieved.
  • an elongated arrangement for emitting light which has a plurality of LED light sources and a plurality of lenses arranged in the light emission direction after the LED light sources, the lenses being joined together to form an elongated optical element and a reflector for influencing the light emission direction of the lenses
  • Lens of emitted light is arranged and the luminous intensity distribution curve of the light emitted from each lens in the C0 / C180 plane has one or more separate wings, each substantially in an angular range of 0 ° to 90 °, with respect to an axis parallel to the Lichtabstrahlraum through the center of gravity of the respective lens, lie and in each case a tip region and adjoining flank regions on both sides, in which the light intensity drops to a significantly lower value than in the tip region, the tip region being at angles greater than 0 ° and ei ne of the flanks falls to the angle range by 0 ° out.
  • the reflector By the reflector, it is now possible to change the light intensity distribution or Lichtabstrahl characterizing the lenses accordingly, whereby one and the same form of the lenses can be used for a variety of lighting tasks.
  • the reflector is used here in the transverse direction.
  • each LED light source is assigned in each case exactly one lens of the optical element.
  • the arrangement for emitting light has a housing with a light exit opening, wherein in the housing, the plurality of LED light source are arranged and the plurality of lenses close the housing in the light emission direction.
  • the luminous intensity distribution curve may have two wings which are substantially symmetrical with respect to an axis parallel to the light emission direction through the light centroid of the respective lens.
  • the reflector is formed and arranged laterally in front of the lenses, that substantially all of the light emitted by the lenses is directed to the opposite side of the reflector of the lenses.
  • the side of the reflector facing away from the lenses is designed as an advertising / information carrier.
  • the reflector is a diaphragm which is designed and arranged in front of the lens in such a way that the emission angle of the light emitted by the lens is reduced or narrowed in the C0 / C180 plane Lens may already be designed such that it is done by glare deflation in the C90 / C270 level. In this way, a glare is achieved in a relatively wide-angle lens, whereby a corresponding arrangement for light output, for example, can be used at computer workstations or in the cashier area of a store.
  • Fig. 3 is, as already explained, an arrangement known from the prior art for emitting light 1 shown.
  • the arrangement for emitting light 1 has a housing 3 with a light exit opening, wherein LED light sources 4 are arranged in the housing and the light exit opening is closed by an optical element 2.
  • the optical element 2 here consists of several lenses 6, which are arranged in the light emission direction after the LED light sources 4. Such optical elements 2, which are composed of a plurality of lenses 6, are exemplified in FIG Fig. 1 shown.
  • Fig. 2 and 4 For example, two different light emission characteristics of such lenses 6 are shown in the C0 / C180 plane and thus in the transverse direction to the optical element 2.
  • light intensity distribution curve is particularly suitable, for example, for shops, in which shelves are arranged along corridors left and right, which are to be particularly illuminated by appropriate arrangements for light output 1.
  • the light intensity distribution curve shown is particularly preferred when a relatively large area below such an arrangement is to be illuminated for light emission 1, since in this case the lenses 6 have a relatively wide-radiating characteristic.
  • lenses are now used in particular, the in Fig. 2 Have shown light intensity distribution curve.
  • a device 5 is still provided in the arrangement for emitting light 1, which allows a mechanical attachment of the arrangement for emitting light 1 to a support rail and also contacted within the support rail extending lines.
  • a reflector 7, 8 for influencing the light output of the lenses 6 is arranged in the light emission direction after the lenses 6.
  • a reflector 7, 8 for influencing the light output of the lenses 6 is arranged in the light emission direction after the lenses 6.
  • Fig. 5 and 7 For this purpose, two embodiments of the invention are shown.
  • a corresponding embodiment variant is shown, in which a substantially flat or just designed reflector 7 is arranged in the longitudinal direction of the arrangement for emitting light 1 and the optical element 2 on one side of the lenses 6, whereby the through the lenses 6 in this Directed light beams are reflected or directed towards the opposite side.
  • the reflector 7 is used according to the invention in lenses 6, which correspond to a light intensity distribution curve Fig. 2 have, which then with appropriate design and arrangement of the reflector 7, the in Fig. 6 shown light intensity distribution curve.
  • the light output only takes place to one side, or the light intensity distribution curve only one wing, in contrast to the light intensity distribution curve in Fig. 2 with two wings.
  • Such a configuration is, for example, desirable if shelves are arranged along one passage only on one side and, accordingly, only these Side should be lit. In this case, however, it is no longer necessary that in an arrangement for emitting light 1, the entire optical element 2 must be replaced. Rather, it is readily possible that an arrangement for emitting light 1 with a corresponding optical element 2 is installed, and then according to the local conditions subsequently a reflector 7 of the arrangement for light emission 1 is assigned.
  • the desired Lichtabstrahl characterizing or the light intensity distribution of the reflector can have any shapes, for example. Curved have. Furthermore, there is also the possibility that the entire light from the lenses is directed onto a reflector.
  • the direction of application of the reflector is provided in the case of linear luminaires in the transverse direction.
  • the rear side of a preferably flat or flat reflector can be equipped with advertising / information carriers, wherein the rear side is illuminated by the transversely extending web of the lenses.
  • the reflector 8 in the in Fig. 7 embodiment shown formed as a panel.
  • the diaphragm 8 is shaped and positioned after the lens 6 such that the emission angle of the light emitted by the lenses 6 is reduced or narrowed.
  • arrangement for light output 1 otherwise corresponds to the arrangement for the light output 1 from Fig. 3 , wherein the housing 3 here has slightly longer legs for receiving the aperture 8.
  • This reduction or narrowing of the emission angle of the light emitted by the lens 6 takes place through the diaphragm 8 in the transverse direction of the arrangement for emitting light 1 or the optical element 2 Fig. 8 be taken light emission characteristic or luminous intensity distribution curve, in contrast to the in Fig. 2 shown light intensity distribution curve a has lower emission angle whereby compared to the in Fig. 3 shown arrangement for light emission 1, the glare 8 is optimized accordingly by the aperture 8.
  • aperture 8 is used according to the invention with lenses 6, which correspond to a luminous intensity distribution curve Fig. 2 exhibit.
  • Fig. 7 consists of the aperture 8 of two mounted on each side curved reflective elements, these elements as well as the reflector 7 in Fig. 5 are arranged in the longitudinal direction of the arrangement for emitting light 1 and the optical element 2.
  • each reflective element thus substantially influences one of the two wings, whereby a change of the wings or the angle between the two wings is achieved.
  • the aperture can also have a correspondingly different shape.
  • the diaphragm is designed such that a circumferential glare is realized by the diaphragm.
  • the lenses can already be designed such that a glare in the longitudinal direction already takes place through the lenses.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Led Device Packages (AREA)

Description

Die vorliegende Erfindung betrifft eine Anordnung zur Lichtabgabe mit mehreren LED-Lichtquellen und mehreren in Lichtabstrahlrichtung nach den LED-Lichtquellen angeordneten Linsen.The present invention relates to an arrangement for emitting light with a plurality of LED light sources and a plurality of lenses arranged in the light emission direction after the LED light sources.

Bei länglichen Leuchten bzw. Anordnungen zur Lichtabgabe, die bspw. im gewerblichen Bereich Anwendung finden, wurden bisher häufig Leuchtstofflampen als Lichtquelle eingesetzt. Die fortschreitende Entwicklung von LEDs führt nun immer mehr dazu, dass bspw. Leuchtstofflampen durch entsprechende LEDs ersetzt werden. Dies ergibt sich zum einen daraus, dass LED-Lichtquellen erhebliche Vorteile bezüglich der Lebensdauer und Energieeffizienz im Vergleich zu herkömmlichen Leuchtmitteln aufweisen. Zum anderen sind die mit Hilfe von LEDs erzielbaren Lichtstärken mittlerweile ausreichend hoch, so dass LED-Lichtquellen ohne weiteres klassische Lichtquellen wie bspw. Leuchtstofflampen ersetzen können.In elongated luminaires or arrangements for the delivery of light, which are used, for example, in the commercial sector, fluorescent lamps have hitherto frequently been used as the light source. The progressive development of LEDs now leads more and more to the fact that, for example, fluorescent lamps are replaced by corresponding LEDs. This results on the one hand from the fact that LED light sources have considerable advantages in terms of life and energy efficiency compared to conventional bulbs. On the other hand, the luminous intensities that can be achieved with the help of LEDs are now sufficiently high so that LED light sources can easily replace conventional light sources such as fluorescent lamps.

Um nun eine gewünschte Abstrahlcharakteristik derartigen Anordnungen zu erreichen, sind in der US 2010/0295071 A1 und in der US 2009/0225543 A1 beispielsweise Anordnungen gezeigt, die mehrere LEDs aufweist, wobei den LEDs jeweils optische Vorrichtungen zugeordnet sind, die das von den LEDs abgegebene Licht entsprechend beeinflussen. US 2011/0095633 offenbart eine Anordnung gemäß dem Oberbegriff des Anspruchs 1.In order to achieve a desired radiation characteristics of such arrangements are in the US 2010/0295071 A1 and in the US 2009/0225543 A1 For example, shown arrangements, which has a plurality of LEDs, wherein the LEDs are each assigned optical devices that affect the light emitted by the LEDs accordingly. US 2011/0095633 discloses an arrangement according to the preamble of claim 1.

Ebenso kann vorgesehen sein, dass den LED-Lichtquellen Linsen zugeordnet sind, die in Abstrahlrichtung nach den LED-Lichtquellen angeordnet werden. Mehrere derartiger Linsen sind hierbei zu einem länglichen optischen Element zusammengefügt, wobei vorzugsweise jeder LED-Lichtquelle jeweils genau eine Linse des optischen Elements zugeordnet ist. In Fig. 1 sind nun drei unterschiedlich ausgestaltete optische Elemente 2 gezeigt. Derartige optische Elemente 2 werden hierbei zumeist im Spritzgussverfahren hergestellt.Likewise it can be provided that the LED light sources are associated with lenses which are arranged in the emission direction after the LED light sources. Several such lenses are in this case joined together to form an elongate optical element, wherein preferably each LED light source is assigned in each case exactly one lens of the optical element. In Fig. 1 now three differently configured optical elements 2 are shown. Such optical elements 2 are in this case usually produced by injection molding.

Aus den Fig. 2 und 4 gehen zwei mögliche Lichtstärkeverteilungskurven der in Fig. 1 gezeigten Linsen 6 hervor, wobei die dort dargestellten Kurven den Werten in der C0/C180-Ebene, also in Querrichtung zu den in Fig. 1 gezeigten optischen Elementen 2, entsprechen. Die in Fig. 2 gezeigte Lichtstärkeverteilungskurve weist zwei voneinander getrennte Flügel auf, die jeweils einen Spitzenbereich bei 30° und daran beidseits anschließende Flankenbereiche, in denen die Lichtstärke auf einen deutlich geringeren Wert als in dem Spitzenbereich abfällt, aufweisen, wobei eine der Flanken zu dem Winkelbereich um 0° hin abfällt. Eine derartige Lichtstärkeverteilung ist bspw. dann von Vorteil, wenn eine entsprechende Anordnung zur Lichtabgabe entlang eines Gangs angeordnet wird, der jeweils rechts und links Regale aufweist, die entsprechend durch die Anordnung zur Lichtabgabe beleuchtet werden sollen.From the Fig. 2 and 4 go two possible light intensity distribution curves in Fig. 1 shown lenses, the curves shown there are the values in the C0 / C180 plane, ie in the transverse direction to the in Fig. 1 shown optical elements 2 correspond. In the Fig. 2 shown light intensity distribution curve has two separate wings, each having a tip region at 30 ° and adjoining flanking areas on both sides, where the light intensity drops to a much lower value than in the tip region, wherein one of the flanks to the angle range around 0 ° out drops. Such a light intensity distribution is, for example, then advantageous if a corresponding arrangement for emitting light along a corridor is arranged, each of which has shelves on the right and left, which are to be illuminated by the arrangement for emitting light accordingly.

In Fig. 3 ist nun eine derartige Anordnung zur Lichtabgabe 1 gezeigt, die ein Gehäuse 3 mit einer Lichtaustrittsöffnung aufweist, wobei in dem Gehäuse 3 die LED-Lichtquellen 4 angeordnet sind und die zu dem optischen Element 2 zusammengefügten Linsen 6 das Gehäuse 3 in Lichtabstrahlrichtung verschließen.In Fig. 3 Now, such an arrangement for light emission 1 is shown, which has a housing 3 with a light exit opening, wherein in the housing 3, the LED light sources 4 are arranged and the assembled together to the optical element 2 lenses 6, the housing 3 in the light emission direction.

In Fig. 4 ist nun im Vergleich zu Fig. 2 eine etwas andere Lichtstärkeverteilungskurve der Linsen 6 gezeigt. Durch diese wird eine sehr breite Ausleuchtung des Bereichs unterhalb der Anordnung zur Lichtabgabe 1 erreicht.In Fig. 4 is now compared to Fig. 2 a slightly different light intensity distribution curve of the lenses 6 shown. Through this, a very wide illumination of the area below the arrangement for light emission 1 is achieved.

Insgesamt besteht hierbei nun das Problem, das eine einfache Veränderung der Lichtstärkeverteilung bzw. Lichtabstrahlcharakteristik der Linsen nicht so ohne Weiteres möglich ist, da es für eine entsprechende Änderung bisher notwendig ist, das gesamte optische Element auszutauschen, wodurch entsprechende hohe Kosten verursacht werden. Zusätzlich entstehen auch erhebliche Kosten durch die Herstellung weiterer optischer Elemente im Spritzgussverfahren, da für jede alternative Ausführungsform eigene Werkzeuge bzw. Gussformen hergestellt werden müssen, die zu hohen Kosten führen.Overall, there is now the problem that a simple change in the luminous intensity distribution or Lichtabstrahlcharakteristik the lenses is not readily possible, since it is necessary for a corresponding change, to replace the entire optical element, causing corresponding high costs. In addition, considerable costs are incurred by the production of additional optical elements in the injection molding process, since for each alternative embodiment own tools or molds must be produced, which lead to high costs.

Der vorliegenden Erfindung liegt dementsprechend die Aufgabe zugrunde, die oben skizzierte Anordnung zur Lichtabgabe derart weiterzuentwickeln, dass die Lichtstärkeverteilung bzw. Lichtabstrahlcharakteristik der Anordnung zur Lichtabgabe verändert werden kann, ohne die Linsen bzw. das optische Element auszutauschen.Accordingly, it is an object of the present invention to further develop the above-described arrangement for emitting light such that the light intensity distribution or light emission characteristic of the arrangement for emitting light can be changed without exchanging the lenses or the optical element.

Die Aufgabe wird durch eine längliche Anordnung zur Lichtabgabe gemäß Anspruch 1 gelöst. Vorteilhafte Weiterbildungen der Erfindung sind Gegenstand der abhängigen Ansprüche.The object is achieved by an elongated arrangement for emitting light according to claim 1. Advantageous developments of the invention are the subject of the dependent claims.

Erfindungsgemäß wird eine längliche Anordnung zur Lichtabgabe vorgeschlagen, die mehrere LED-Lichtquellen und mehrere in Lichtabstrahlrichtung nach den LED-Lichtquellen angeordnete Linsen aufweist, wobei die Linsen zu einem länglichen optischen Element zusammengefügt sind und in Lichtabstrahlrichtung nach den Linsen ein Reflektor zur Beeinflussung des von den Linsen abgegebenen Lichts angeordnet ist und die Lichtstärkeverteilungskurve des von jeder Linse abgegebenen Lichts in der C0/C180-Ebene ein oder mehrere voneinander getrennte Flügel aufweist, die jeweils im wesentlichen in einem Winkelbereich von 0° bis 90°, bezogen auf eine Achse parallel zur Lichtabstrahlrichtung durch den Lichtschwerpunkt der jeweiligen Linse, liegen und jeweils einen Spitzenbereich und daran beidseits anschließende Flankenbereiche, in denen die Lichtstärke auf einen deutlich geringeren Wert als in dem Spitzenbereich abfällt, aufweisen, wobei der Spitzenbereich bei Winkeln grösser 0° liegt und eine der Flanken zu dem Winkelbereich um 0° hin abfällt.According to the invention, an elongated arrangement for emitting light is proposed which has a plurality of LED light sources and a plurality of lenses arranged in the light emission direction after the LED light sources, the lenses being joined together to form an elongated optical element and a reflector for influencing the light emission direction of the lenses Lens of emitted light is arranged and the luminous intensity distribution curve of the light emitted from each lens in the C0 / C180 plane has one or more separate wings, each substantially in an angular range of 0 ° to 90 °, with respect to an axis parallel to the Lichtabstrahlrichtung through the center of gravity of the respective lens, lie and in each case a tip region and adjoining flank regions on both sides, in which the light intensity drops to a significantly lower value than in the tip region, the tip region being at angles greater than 0 ° and ei ne of the flanks falls to the angle range by 0 ° out.

Durch den Reflektor ist es nunmehr möglich, die Lichtstärkeverteilung bzw. Lichtabstrahlcharakteristik der Linsen entsprechend zu verändern, wodurch ein und dieselbe Form der Linsen für die unterschiedlichsten Beleuchtungsaufgaben eingesetzt werden kann. Der Reflektor wird hierbei in Querrichtung verwendet.By the reflector, it is now possible to change the light intensity distribution or Lichtabstrahlcharakteristik the lenses accordingly, whereby one and the same form of the lenses can be used for a variety of lighting tasks. The reflector is used here in the transverse direction.

Zusätzlich kann auch vorgesehen sein, dass jeder LED-Lichtquelle jeweils genau eine Linse des optischen Elements zugeordnet ist. Desweiteren kann ebenfalls vorgesehen sein, dass die Anordnung zur Lichtabgabe ein Gehäuse mit einer Lichtaustrittsöffnung aufweist, wobei in dem Gehäuse die mehreren LED-Lichtquelle angeordnet sind und die mehreren Linsen das Gehäuse in Lichtabstrahlrichtung verschließen.In addition, it can also be provided that each LED light source is assigned in each case exactly one lens of the optical element. Furthermore, it can also be provided that the arrangement for emitting light has a housing with a light exit opening, wherein in the housing, the plurality of LED light source are arranged and the plurality of lenses close the housing in the light emission direction.

Zusätzlich kann die Lichtstärkeverteilungskurve zwei Flügel aufweist, die, bezogen auf eine Achse parallel zur Lichtabstrahlrichtung durch den Lichtschwerpunkt der jeweiligen Linse, im Wesentlichen symmetrisch liegen.In addition, the luminous intensity distribution curve may have two wings which are substantially symmetrical with respect to an axis parallel to the light emission direction through the light centroid of the respective lens.

Desweiteren kann vorgesehen sein, dass der Reflektor derart ausgebildet und seitlich vor den Linsen angeordnet ist, dass im Wesentlichen das gesamte von den Linsen abgegebene Licht zu der dem Reflektor gegenüberliegenden Seite der Linsen gelenkt wird. Hierbei kann zusätzlich vorgesehen sein, dass die den Linsen abgewandte Seite des Reflektors als Werbe-/Infoträger ausgebildet ist. Durch diese Ausgestaltung und Anordnung des Reflektors ergibt sich nun eine Lichtstärkeverteilung bzw. Lichtabstrahlcharakteristik, die bspw. bei der Anbringung der Anordnung zur Lichtabgabe entlang eines Gangs dazu führt, dass nur noch eine Seite des Gangs entsprechend beleuchtet wird. Dies könnte bspw. von Interesse sein, falls nur an einer Seite des Gangs ein Regal angeordnet ist, das entsprechend beleuchtet werden soll.Furthermore, it can be provided that the reflector is formed and arranged laterally in front of the lenses, that substantially all of the light emitted by the lenses is directed to the opposite side of the reflector of the lenses. In this case, it may additionally be provided that the side of the reflector facing away from the lenses is designed as an advertising / information carrier. This configuration and arrangement of the reflector now results in a light intensity distribution or light emission characteristic, which leads, for example, when attaching the arrangement for emitting light along a corridor, to the fact that only one side of the corridor is correspondingly illuminated. This could be of interest, for example, if only one side of the aisle is arranged with a shelf which should be illuminated accordingly.

Alternativ kann vorgesehen sein, dass es sich bei dem Reflektor um eine Blende handelt, die derart ausgebildet und vor den Linse angeordnet ist, dass der Abstrahlwinkel des von der Linse abgegebenen Lichts in der C0/C180-Ebene verkleinert bzw. verengt wird, wobei die Linse bereits derart ausgebildet sein kann, dass durch sie eine Entblendung in der C90/C270-Ebene erfolgt. Hierdurch wird bei einer relativ breit strahlenden Linse eine Entblendung erreicht, wodurch eine entsprechende Anordnung zur Lichtabgabe bspw. auch an Computerarbeitsplätzen oder im Kassenbereich eines Ladens eingesetzt werden kann.Alternatively, it can be provided that the reflector is a diaphragm which is designed and arranged in front of the lens in such a way that the emission angle of the light emitted by the lens is reduced or narrowed in the C0 / C180 plane Lens may already be designed such that it is done by glare deflation in the C90 / C270 level. In this way, a glare is achieved in a relatively wide-angle lens, whereby a corresponding arrangement for light output, for example, can be used at computer workstations or in the cashier area of a store.

Desweiteren kann vorgesehen sein, dass nur einem Teil der Linsen der Reflektor zugeordnet ist.Furthermore, it can be provided that only a part of the lenses is associated with the reflector.

Nachfolgend soll die Erfindung anhand von Ausführungsbeispielen und den beiliegenden Zeichnungen näher erläutert werden. Es zeigen:

Fig. 1
Darstellung mehrerer zu optischen Elementen zusammengefügten Linsen;
Fig. 2
mögliche Lichtstärkeverteilungskurve der in Fig. 1 gezeigten Linsen in Querrichtung;
Fig. 3
Anordnung zur Lichtabgabe mit einem mehrere Linsen aufweisenden optischen Element;
Fig. 4
mögliche Lichtstärkeverteilungskurve der in Fig. 1 gezeigten Linsen in Querrichtung;
Fig. 5
erfindungsgemäße Anordnung zur Lichtabgabe gemäß einer ersten Ausführungsform;
Fig. 6
Lichtstärkeverteilungskurve der in Fig. 5 gezeigten Anordnung zur Lichtabgabe in Querrichtung;
Fig. 7
erfindungsgemäße Anordnung zur Lichtabgabe gemäß einer zweiten Ausführungsform;
Fig. 8
Lichtstärkeverteilung der in Fig. 7 gezeigten Anordnung zur Lichtabgabe in Querrichtung.
The invention will be explained in more detail with reference to embodiments and the accompanying drawings. Show it:
Fig. 1
Representation of several assembled to optical elements lenses;
Fig. 2
possible light intensity distribution curve of in Fig. 1 shown lenses in the transverse direction;
Fig. 3
Arrangement for emitting light with a multi-lens optical element;
Fig. 4
possible light intensity distribution curve of in Fig. 1 shown lenses in the transverse direction;
Fig. 5
inventive arrangement for emitting light according to a first embodiment;
Fig. 6
Luminous intensity distribution curve of in Fig. 5 shown arrangement for light output in the transverse direction;
Fig. 7
inventive arrangement for emitting light according to a second embodiment;
Fig. 8
Light intensity distribution of in Fig. 7 shown arrangement for light output in the transverse direction.

In Fig. 3 ist, wie bereits erläutert, eine aus dem Stand der Technik bekannte Anordnung zur Lichtabgabe 1 gezeigt. Die Anordnung zur Lichtabgabe 1 weist ein Gehäuse 3 mit einer Lichtaustrittsöffnung auf, wobei in dem Gehäuse LED-Lichtquellen 4 angeordnet sind und die Lichtaustrittsöffnung durch ein optisches Element 2 verschlossen wird. Das optische Element 2 besteht hierbei aus mehreren Linsen 6, die in Lichtabstrahlrichtung nach den LED-Lichtquellen 4 angeordnet sind. Derartige optische Elemente 2, die sich aus mehreren Linsen 6 zusammensetzen, sind beispielhaft in Fig. 1 gezeigt.In Fig. 3 is, as already explained, an arrangement known from the prior art for emitting light 1 shown. The arrangement for emitting light 1 has a housing 3 with a light exit opening, wherein LED light sources 4 are arranged in the housing and the light exit opening is closed by an optical element 2. The optical element 2 here consists of several lenses 6, which are arranged in the light emission direction after the LED light sources 4. Such optical elements 2, which are composed of a plurality of lenses 6, are exemplified in FIG Fig. 1 shown.

In den Fig. 2 und 4 sind zwei unterschiedliche Lichtabstrahlcharakteristiken bzw. Lichtstärkeverteilungskurven derartiger Linsen 6 in der C0/C180-Ebene und somit in Querrichtung zum optischen Element 2 gezeigt. Die in Fig. 2 gezeigte Lichtstärkeverteilungskurve eignet sich insbesondere bspw. für Verkaufsläden, bei denen entlang von Gängen links und rechts jeweils Regale angeordnet sind, die durch entsprechende Anordnungen zur Lichtabgabe 1 besonders beleuchtet werden sollen. Die in Fig. 4 gezeigte Lichtstärkeverteilungskurve hingegen wird insbesondere dann bevorzugt, wenn ein relativ großer Bereich unterhalb einer derartigen Anordnung zur Lichtabgabe 1 beleuchtet werden soll, da in diesem Fall die Linsen 6 eine relativ breit strahlende Charakteristik aufweisen.In the Fig. 2 and 4 For example, two different light emission characteristics of such lenses 6 are shown in the C0 / C180 plane and thus in the transverse direction to the optical element 2. In the Fig. 2 shown light intensity distribution curve is particularly suitable, for example, for shops, in which shelves are arranged along corridors left and right, which are to be particularly illuminated by appropriate arrangements for light output 1. In the Fig. 4 On the other hand, the light intensity distribution curve shown is particularly preferred when a relatively large area below such an arrangement is to be illuminated for light emission 1, since in this case the lenses 6 have a relatively wide-radiating characteristic.

Bei der vorliegenden Erfindung kommen nun insbesondere Linsen zum Einsatz, die die in Fig. 2 gezeigte Lichtstärkeverteilungskurve aufweisen.In the present invention, lenses are now used in particular, the in Fig. 2 Have shown light intensity distribution curve.

An der Oberseite des Gehäuses ist desweiteren bei der Anordnung zur Lichtabgabe 1 noch eine Vorrichtung 5 vorgesehen, die eine mechanische Befestigung der Anordnung zur Lichtabgabe 1 an einer Tragschiene ermöglicht und ferner innerhalb der Tragschiene verlaufende Leitungen kontaktiert.Furthermore, at the top of the housing, a device 5 is still provided in the arrangement for emitting light 1, which allows a mechanical attachment of the arrangement for emitting light 1 to a support rail and also contacted within the support rail extending lines.

Erfindungsgemäß ist nun vorgesehen, dass in Lichtabstrahlrichtung nach den Linsen 6 ein Reflektor 7, 8 zur Beeinflussung der Lichtabgabe der Linsen 6 angeordnet ist. In den Fig. 5 und 7 sind hierzu zwei erfindungsgemäße Ausführungsbeispiele dargestellt.According to the invention, it is now provided that a reflector 7, 8 for influencing the light output of the lenses 6 is arranged in the light emission direction after the lenses 6. In the Fig. 5 and 7 For this purpose, two embodiments of the invention are shown.

In Fig. 5 ist hierbei nun eine entsprechende Ausgestaltungsvariante gezeigt, bei der ein im Wesentlichen flach bzw. eben ausgestalteter Reflektor 7 in Längsrichtung der Anordnung zur Lichtabgabe 1 bzw. des optischen Elements 2 an einer Seite der Linsen 6 angeordnet wird, wodurch die durch die Linsen 6 in diese Richtung abgegebenen Lichtstrahlen in Richtung der gegenüberliegenden Seite reflektiert bzw. gelenkt werden. Der Reflektor 7 wird erfindungsgemäß bei Linsen 6 eingesetzt, die eine Lichtstärkeverteilungskurve entsprechend Fig. 2 aufweisen, wodurch sich dann bei entsprechender Ausgestaltung und Anordnung des Reflektors 7 die in Fig. 6 gezeigte Lichtstärkeverteilungskurve ergibt. Aus Fig. 6 ist nunmehr deutlich zu erkennen, dass die Lichtabgabe lediglich nur noch zu einer Seite hin erfolgt, bzw. die Lichtstärkeverteilungskurve nur noch einen Flügel, im Gegensatz zur Lichtstärkeverteilungskurve in Fig. 2 mit zwei Flügeln, aufweist.In Fig. 5 Here, a corresponding embodiment variant is shown, in which a substantially flat or just designed reflector 7 is arranged in the longitudinal direction of the arrangement for emitting light 1 and the optical element 2 on one side of the lenses 6, whereby the through the lenses 6 in this Directed light beams are reflected or directed towards the opposite side. The reflector 7 is used according to the invention in lenses 6, which correspond to a light intensity distribution curve Fig. 2 have, which then with appropriate design and arrangement of the reflector 7, the in Fig. 6 shown light intensity distribution curve. Out Fig. 6 It can now be clearly seen that the light output only takes place to one side, or the light intensity distribution curve only one wing, in contrast to the light intensity distribution curve in Fig. 2 with two wings.

Eine derartige Ausgestaltung ist bspw. dann wünschenswert, wenn entlang eines Gangs nur an einer Seite Regale angeordnet sind und dementsprechend auch nur diese Seite beleuchtet werden soll. Hierbei ist es nun aber nicht mehr notwendig, dass bei einer Anordnung zur Lichtabgabe 1 das gesamte optische Element 2 ausgetauscht werden muss. Vielmehr ist es ohne Weiteres möglich, dass eine Anordnung zur Lichtabgabe 1 mit einem entsprechenden optischen Element 2 installiert wird, und dann entsprechend den örtlichen Bedingungen nachträglich ein Reflektor 7 der Anordnung zur Lichtabgabe 1 zugeordnet wird.Such a configuration is, for example, desirable if shelves are arranged along one passage only on one side and, accordingly, only these Side should be lit. In this case, however, it is no longer necessary that in an arrangement for emitting light 1, the entire optical element 2 must be replaced. Rather, it is readily possible that an arrangement for emitting light 1 with a corresponding optical element 2 is installed, and then according to the local conditions subsequently a reflector 7 of the arrangement for light emission 1 is assigned.

Entsprechend der gewünschten Lichtabstrahlcharakteristik bzw. der Lichtstärkeverteilung kann der Reflektor beliebige Formen, bspw. gekrümmt, aufweisen. Desweiteren besteht auch die Möglichkeit, dass das gesamte Licht aus den Linsen auf einen Reflektor gerichtet wird.According to the desired Lichtabstrahlcharakteristik or the light intensity distribution of the reflector can have any shapes, for example. Curved have. Furthermore, there is also the possibility that the entire light from the lenses is directed onto a reflector.

Die Anwendungsrichtung des Reflektors ist bei Langfeldleuchten dabei in Querrichtung vorgesehen.The direction of application of the reflector is provided in the case of linear luminaires in the transverse direction.

Zusätzlich kann auch noch vorgesehen sein, dass bspw. für einen Verkaufsbereich die Rückseite eines vorzugsweise ebenen bzw. flachen Reflektors mit Werbe-/Infoträgern bestückbar ist, wobei die Rückseite durch den quer verlaufenden Steg der Linsen beleuchtet wird.In addition, it may also be provided that, for example, for a sales area, the rear side of a preferably flat or flat reflector can be equipped with advertising / information carriers, wherein the rear side is illuminated by the transversely extending web of the lenses.

Im Gegensatz zu dem in Fig. 5 gezeigten Ausführungsbeispiel, in dem ein im Wesentlichen flacher bzw. ebener Reflektor 7 zum Einsatz kommt, ist der Reflektor 8 bei dem in Fig. 7 gezeigten Ausführungsbeispiel als Blende ausgebildet. Die Blende 8 ist hierbei derart geformt und nach den Linse 6 positioniert, dass der Abstrahlwinkel des von den Linsen 6 abgegebenen Lichts verkleinert bzw. verengt wird. Die in Fig. 7 gezeigte Anordnung zur Lichtabgabe 1 entspricht hierbei ansonsten der Anordnung zur Lichtabgabe 1 aus Fig. 3, wobei das Gehäuse 3 hier etwas längere Schenkel zur Aufnahme der Blende 8 aufweist.Unlike the in Fig. 5 In the embodiment shown, in which a substantially flat or planar reflector 7 is used, the reflector 8 in the in Fig. 7 embodiment shown formed as a panel. In this case, the diaphragm 8 is shaped and positioned after the lens 6 such that the emission angle of the light emitted by the lenses 6 is reduced or narrowed. In the Fig. 7 shown arrangement for light output 1 otherwise corresponds to the arrangement for the light output 1 from Fig. 3 , wherein the housing 3 here has slightly longer legs for receiving the aperture 8.

Diese Verkleinerung bzw. Verengung des Abstrahlwinkels des von der Linse 6 abgegebenen Lichts erfolgt durch die Blende 8 hierbei in Querrichtung der Anordnung zur Lichtabgabe 1 bzw. des optischen Elements 2. Dies kann auch der in Fig. 8 gezeigten Lichtabstrahlcharakteristik bzw. Lichtstärkeverteilungskurve entnommen werden, die im Gegensatz zu der in Fig. 2 gezeigten Lichtstärkeverteilungskurve einen geringeren Abstrahlwinkel aufweist wodurch im Vergleich zu der in Fig. 3 gezeigten Anordnung zur Lichtabgabe 1, durch die Blende 8 die Entblendung entsprechend optimiert wird.This reduction or narrowing of the emission angle of the light emitted by the lens 6 takes place through the diaphragm 8 in the transverse direction of the arrangement for emitting light 1 or the optical element 2 Fig. 8 be taken light emission characteristic or luminous intensity distribution curve, in contrast to the in Fig. 2 shown light intensity distribution curve a has lower emission angle whereby compared to the in Fig. 3 shown arrangement for light emission 1, the glare 8 is optimized accordingly by the aperture 8.

Hierdurch ist es bspw. möglich, dass eine entsprechende Anordnung zur Lichtabgabe 1 auch im Kassenbereich eines Verkaufsladens eingesetzt werden kann, da diese die entsprechenden Anforderungen für einen derartigen Arbeitsplatzbereich erfüllt. Desweiteren ist auch der Einsatz bspw. an Bildschirmarbeitsplätzen möglich.This makes it possible, for example, that a corresponding arrangement for emitting light 1 can also be used in the checkout area of a shop, since this fulfills the corresponding requirements for such a work area. Furthermore, the use of eg. At VDU workstations is possible.

Die in Figur 7 gezeigte Blende 8 wird erfindungsgemäß mit Linsen 6 eingesetzt, die eine Lichtstärkeverteilungskurve entsprechend Fig. 2 aufweisen.In the FIG. 7 shown aperture 8 is used according to the invention with lenses 6, which correspond to a luminous intensity distribution curve Fig. 2 exhibit.

In Fig. 7 besteht die Blende 8 aus zwei an jeder Seite angebrachten gebogenen reflektierenden Elementen, wobei diese Elemente wie auch der Reflektor 7 in Fig. 5 in Längsrichtung der Anordnung zur Lichtabgabe 1 bzw. des optischen Elements 2 angeordnet sind. Bei Linsen 6, die eine Lichtstärkeverteilungskurve entsprechend Fig. 2 aufweisen, beeinflusst hierbei jedes reflektierende Element somit im Wesentlichen einen der beiden Flügel, wodurch eine Veränderung der Flügel bzw. des Winkels zwischen den beiden Flügeln erreicht wird.In Fig. 7 consists of the aperture 8 of two mounted on each side curved reflective elements, these elements as well as the reflector 7 in Fig. 5 are arranged in the longitudinal direction of the arrangement for emitting light 1 and the optical element 2. For lenses 6, which correspond to a luminous intensity distribution curve Fig. 2 In this case, each reflective element thus substantially influences one of the two wings, whereby a change of the wings or the angle between the two wings is achieved.

Die Blende kann aber auch eine entsprechend andere Form aufweisen. Beispielsweise wäre es auch denkbar, dass die Blende derart ausgestaltet ist, dass eine umlaufende Entblendung durch die Blende realisiert wird. Hierbei ist aber zu beachten, dass die Linsen bereits derart ausgestaltet sein können, dass eine Entblendung in Längsrichtung bereits durch die Linsen erfolgt.But the aperture can also have a correspondingly different shape. For example, it would also be conceivable that the diaphragm is designed such that a circumferential glare is realized by the diaphragm. In this case, however, it should be noted that the lenses can already be designed such that a glare in the longitudinal direction already takes place through the lenses.

Auch durch die Blende ist es nun wiederum möglich, dass eine entsprechende Anordnung zur Lichtabgabe mit einem entsprechenden optischen Element montiert wird und erst anschließend die Blende je nach Wunsch der Beleuchtung angebracht wird, wodurch der Einsatz der gleichen bzw. einer sehr geringen Zahl unterschiedlicher Linsen für viele verschiedene Beleuchtungsaufgaben möglich wird.It is now also possible through the diaphragm, that a corresponding arrangement for emitting light with a corresponding optical element is mounted and only then the aperture is attached as desired lighting, whereby the use of the same or a very small number of different lenses for many different lighting tasks becomes possible.

Claims (8)

  1. Elongate arrangement for emitting light (1), comprising a plurality of LED light sources (4) and a plurality of lenses (6) arranged after the LED light sources (4) in the light emission direction, wherein a reflector (7, 8) for influencing the light emitted from the lenses (6) is arranged after the lenses (6) in the light emission direction, characterized in that the light intensity distribution curve of the light emitted from each lens (6) in the C0/C180 plane has one or more wings which are separate from one another and which each lie substantially in an angle range of 0° to 90° relative to an axis parallel to the light emission direction through the light centre of the respective lens (6) and each have a tip region and flank regions adjoining the latter on both sides, in which flank regions the light intensity falls to a considerably lower value than in the tip region, wherein the tip region lies at angles greater than 0° and one of the flanks falls towards the angle range around 0°, and in that the lenses (6) are joined together to form an elongate optical element (2).
  2. Arrangement for emitting light according to claim 2, characterized in that the light intensity distribution curve has two wings which lie substantially symmetrically relative to an axis parallel to the light emission direction through the light centre of the respective lens (6).
  3. Arrangement for emitting light according to any of the preceding claims, characterized in that the reflector (7) is designed and is arranged laterally in front of the lenses (6) in such a way that substantially all of the light emitted from the lenses (6) is directed to the side of the lenses (6) located opposite the reflector (7).
  4. Arrangement for emitting light according to claim 4, characterized in that the side of the reflector (7) facing away from the lenses (6) is designed as an advertising/information carrier.
  5. Arrangement for emitting light according to any of claims 1 to 2, characterized in that the reflector is a diaphragm (8) which is designed and is arranged in front of the lenses (6) in such a way that the emission angle of the light emitted from the lenses (6) in the C0/C180 plane is reduced or narrowed.
  6. Arrangement for emitting light according to any of the preceding claims, characterized in that in each case precisely one lens (6) of the optical element (2) is assigned to each LED light source (4).
  7. Arrangement for emitting light according to any of the preceding claims, characterized in that the reflector (7, 8) is assigned only to some of the lenses (6).
  8. Arrangement for emitting light according to any of the preceding claims, characterized in that the arrangement for emitting light (1) has a housing (3) with a light exit opening, wherein the plurality of LED light sources (4) is arranged in the housing (3) and the plurality of lenses (6) close the housing (3) in the light emission direction.
EP12737278.7A 2011-07-19 2012-07-18 Arrangement for emitting light Active EP2734782B1 (en)

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EP2734782A2 (en) 2014-05-28
DE102011079404A1 (en) 2013-01-24
PL2734782T3 (en) 2015-10-30
CN103688106B (en) 2017-06-20
WO2013011045A2 (en) 2013-01-24
US9360172B2 (en) 2016-06-07
US20140160756A1 (en) 2014-06-12
CN103688106A (en) 2014-03-26
WO2013011045A3 (en) 2013-04-04

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