EP2644982B1 - Light emitting assembly - Google Patents

Light emitting assembly Download PDF

Info

Publication number
EP2644982B1
EP2644982B1 EP13161035.4A EP13161035A EP2644982B1 EP 2644982 B1 EP2644982 B1 EP 2644982B1 EP 13161035 A EP13161035 A EP 13161035A EP 2644982 B1 EP2644982 B1 EP 2644982B1
Authority
EP
European Patent Office
Prior art keywords
diffuser
light emitting
led light
light source
emitting assembly
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
EP13161035.4A
Other languages
German (de)
French (fr)
Other versions
EP2644982A1 (en
Inventor
Patrik Gassner
Bogna Ludwiczak
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zumtobel Lighting GmbH Austria filed Critical Zumtobel Lighting GmbH Austria
Publication of EP2644982A1 publication Critical patent/EP2644982A1/en
Application granted granted Critical
Publication of EP2644982B1 publication Critical patent/EP2644982B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/12—Combinations of only three kinds of elements
    • 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 at least one LED light source and a diffuser arranged in the light emission direction in front of the LED light source, wherein the light emission of the arrangement takes place via the diffuser.
  • LED lamps have hitherto frequently been used as light sources.
  • 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 lifetime and energy efficiency compared to conventional light sources.
  • the luminous intensity achievable with the help of LEDs is now sufficiently high that LED light sources can easily replace conventional light sources such as fluorescent lamps.
  • FIG. 1 is an example of a possible embodiment of such a slotlight lamp 1 shown in cross section, wherein the lamp 1 has an elongate housing 6 with a light exit opening. At the light exit opening a diffuser 3 is arranged, which closes the light exit opening. Accordingly, the light output of the lamp 1 via the diffuser 3rd
  • an LED light source 2 is further provided, which is placed in the housing 6 such that the diffuser 3 substantially in Light emission direction in front of the LED light source 2 is located.
  • a reflector 5 is also provided, which has two reflector wings 7 arranged laterally on the inside of the housing 6 the two reflector wings 7 are located substantially between the LED light source 2 and the diffuser 3.
  • this reflector wing 7 ensures that a majority of the light emitted from the LED light source 2 is directed to the diffuser 3, as well as the light emitted from the LED light source 2, which is not directly blasted in the direction of the diffuser 3, by Multiple reflections can be directed to the reflector wings 7 in the direction of the diffuser 3.
  • the reflector vanes 7 In order to achieve the highest possible efficiency or high efficiency of the luminaire 1, however, it is necessary for the reflector vanes 7 to have the highest possible reflector material in order to have the best possible reflection properties.
  • lamp 1 in the housing 6 additionally provided a transparent plate 4, which is arranged between the LED light source 2 and the diffuser 3. Through this it is achieved that even after the removal of the diffuser 3, a corresponding contact protection for the LED light source 2 is given.
  • lamp 1 is provided that the transparent plate 4 is held by the reflector 5.
  • the reflector 5 is in this case substantially U-shaped, wherein the LED light source 2 is arranged centrally within the U-shape and the opening of the U-shape in the direction of the diffuser 3 shows.
  • the reflector wings 7, which form the wings of the U-shape, are slightly curved in this case and connected to each other via a central region of the U-shape, wherein in the reflector wings 7 in the vicinity of the central region corresponding recesses or recesses are provided, in each case the ends of the transparent plate 4 are arranged, whereby the transparent plate 4 is held by the reflector 5.
  • the present invention is accordingly based on the object of further developing the arrangement outlined above for emitting light such that the efficiency or the efficiency is increased and at the same time ensuring that inadvertently touching the LED light source or the corresponding components can be prevented.
  • an arrangement for emitting light which has at least one LED light source and a diffuser arranged in the light emission direction in front of the LED light source, wherein the light emission of the arrangement takes place via the diffuser.
  • a lens assembly formed between the LED light source and the diffuser such that all the light emitted by the LED light source is substantially completely and uniformly directed to the diffuser.
  • reflector wings arranged laterally between the lens arrangement and the diffuser are also provided, which also possibly direct stray light to the diffuser.
  • the reflector wings are also arranged laterally next to the lens arrangement, wherein the lens arrangement is fixed by the reflector wings in the arrangement for emitting light.
  • the lens arrangement thus enables almost all of the light emitted by the LED light source to strike the diffuser and complete it uniformly illuminated without having to reflect a significant portion of the light emitted by the LED light source on a reflector, thereby ensuring that the light emitted from the LED light source is efficiently and with high efficiency in a nearly complete and uniform manner over the Diffuser can be dispensed.
  • the reflector wings may be part of a substantially U-shaped reflector, wherein the LED light source is arranged centrally within the U-shape and shows the opening of the U-shape in the direction of the diffuser.
  • the lens arrangement is formed in cross-section substantially frusto-conical, wherein it is the LED light source facing end portion to the top surface of the truncated cone and at the end facing the diffuser to the base of the truncated cone.
  • the end portion of the truncated cone facing the LED light source may in this case have a recess with a bottom surface and two side surfaces, wherein the LED light source is arranged substantially in the recess, such that the bottom surface and the side surfaces of the light entry surface of the lens assembly for that of LED light emitted, the bottom surface convex and the side surfaces may be concave.
  • the end region of the truncated cone facing the diffuser can be substantially planar and form the light exit surface of the lens arrangement and can be configured such that the light leaving the lens arrangement is slightly widened.
  • the two lateral lateral surfaces of the truncated cone can be curved and designed to be totally reflective.
  • This special lens arrangement permits efficient collection, bundling and uniform distribution of the light emitted by the LED light source to an underlying or subsequent diffuser.
  • the end region of the truncated cone facing the diffuser is laterally arranged, in particular multiply unwound arms for mounting the lens assembly in the light emitting device.
  • the arrangement for emitting light is elongated and has a plurality of longitudinally arranged LED light sources. It can then be provided that a common lens arrangement is provided for all LED light sources, which has the same cross section over the entire length.
  • the lens arrangement influences the uniform illumination of the diffuser, in particular over the width of the light exit opening, since over the entire length the lens arrangement has the same cross section. Accordingly, the light emitted by the LED light source is essentially only transversely affected and thus in one plane.
  • each lens arrangement is associated with at least one LED light source.
  • each LED light source is assigned a single lens arrangement, which in addition to the transverse direction also an influence in the longitudinal direction and thus in two planes is possible.
  • the light may then be influenced such that it is directed substantially completely towards the diffuser in the transverse direction and, on the contrary, tends to be distributed widely in the longitudinal direction. Due to this rather broad distribution, a better mixing of the light in the longitudinal direction is achieved, whereby the influence of individual LED failures or different color or luminous flux densities (deviations and consequent irregularities) can be minimized.
  • the arrangement for emitting light has a housing with a light exit opening, wherein in the Housing the at least one LED light source and the lens assembly are arranged and the diffuser closes the light exit opening.
  • FIG. 1 shows, as already explained above, by way of example, an already known from the prior art Slotlight lamp 1 of the applicant.
  • a transparent plate 4 is provided between the LED light source 2 and the diffuser 3, which serves in particular as protection against contact.
  • the light guide of the light emitted by the LED light source 2 essentially takes place through the reflector vanes 7 of the reflector 5.
  • the reflector vanes 7 have corresponding recesses or recesses in which the ends of the transparent plate 4 are arranged and, accordingly, by the reflector 5 are kept.
  • a significant portion of the light emitted from the LED light source 2 is directed by multiple reflections on the reflector wings 7 on the diffuser 3, whereby the reflector wings 7 must have a correspondingly high-quality reflector material.
  • FIG. 2 shows a corresponding light fixture 11 according to the invention or arrangement for emitting light, which in turn has a diffuser 3 and an LED light source 2.
  • lamp 1 is also in the in FIG. 2 shown light source 2, the LED light source 2 disposed within a housing 6, wherein the diffuser 3, the light exit opening of the housing 6 closes.
  • the lamp 11 has a reflector 5 with two arranged laterally within the housing 6 reflector wings 7, wherein the lens assembly 14 is secured or held in the same recesses or recesses in which the ends of the transparent plate 4 in FIG. 1 be held or attached.
  • the lens arrangement 14 has two multiply angled arms which are each arranged laterally on the main body of the lens arrangement 14.
  • the main body of the lens assembly 14 is in this case frusto-conical, wherein it is the LED light source 2 end portion facing the top surface of the truncated cone and at the end facing the diffuser 3 to the base of the truncated cone and the multi-angled arms at the diffuser 3 facing end portion of the truncated cone are arranged laterally.
  • the end region of the truncated cone facing the LED light source 2 additionally has a depression, wherein the LED light source 2 is arranged substantially in the depression.
  • the depression consists essentially of a bottom surface and two side surfaces which correspondingly form the light entry surface of the lens arrangement 14 for the light emitted by the LED light source 2.
  • the bottom surface is in this case formed as a convex, spherical lens having a radius of, for example, 13 mm, wherein the geometry is selected such that the light emitted by the LED light source 2 strikes the bottom surface, for example in an angle range of -50 ° to + 50 ° and is bundled by the convex shape.
  • This light then leaves the lens arrangement 14 via the end region of the truncated cone facing the diffuser 3, this end region being substantially planar and forming the light exit surface of the lens arrangement 14.
  • this end region is also designed such that the light leaving the lens arrangement 14 is slightly widened or broken, for example in one Angle range of -35 ° to 35 °, such that this proportion of light is distributed uniformly over the entire width of the diffuser 3.
  • FIG. 3 is the in FIG. 2 illustrated lamp 11 according to the invention shown with corresponding light rays, where in particular the light emitted from the LED light source 2 is shown, which strikes the bottom surface of the recess. Due to the convex shape of the bottom surface, the light is first bundled, and then slightly expanded again on leaving the lens arrangement 14 via the end region facing the diffuser 3, so that the light leaving the lens arrangement 14 leaves the diffuser 3 illuminated as completely and evenly as possible.
  • the side surfaces of the recess are in contrast formed as a concave, spherical lens having a radius of for example about 4.5 mm, wherein it is provided that these side surfaces emitted by the LED light source 2 light in an angular range, for example, from -90 ° to -50 and from + 50 ° to + 90 °.
  • the LED light source 2 can in this case be arranged in the recess such that it is located in the center of the circle of the two side surfaces, so that no change in direction of the light is produced.
  • the side surfaces then transmit the light radially (i.e., without diffraction) to the lateral lateral surfaces of the truncated cone.
  • These lateral lateral surfaces are in this case curved and formed totally reflecting, so that the directed from the side surfaces to the lateral surfaces of light is deflected by total reflection, such that after leaving the lens assembly 14 via the diffuser 3 end facing the light also illuminates the diffuser completely and evenly , It should be noted that this light is again slightly widened by refraction through the end region facing the diffuser.
  • FIG. 4 Now corresponding light beams are shown, which pass from the LED light source 2 in the lens assembly 14 via the side surfaces of the recess.
  • FIG. 4 again shows the in FIG. 2 shown lamp 11.
  • Both the light entering the lens assembly 14 via the bottom surface of the recess and the light entering the lens assembly 14 via the side surfaces of the recess Lens assembly 14 entering light is influenced by the lens assembly 14 such that it after leaving the lens assembly 14, the diffuser 3 evenly and completely illuminated, resulting in a higher efficiency and a better efficiency.
  • the design of the lens assembly 14 and in particular also by the attachment in the same recesses or recesses, the lens assembly 14, as well as the transparent plate 4, serves as protection against contact for the LED light source 2 and the corresponding components and accordingly accidental contact with these parts when opening the diffuser 3 can be largely prevented.
  • the known slotlight luminaires are elongate luminaires which have a plurality of LED light sources distributed over the length.
  • a common lens arrangement is provided for all LED light sources, which has an unchanged cross-section in the longitudinal direction.
  • the light is then essentially influenced only in the transverse direction and thus only in one plane.
  • a plurality of lens arrangements could also be provided, for example a lens arrangement for each LED light source.
  • the light can be influenced both in the transverse direction and in the longitudinal direction and thus in several planes.
  • a very wide distribution or generation of very flat light may be desired in order to achieve even better light mixing.

Landscapes

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

Description

Die vorliegende Erfindung betrifft eine Anordnung zur Lichtabgabe mit mindestens einer LED-Lichtquelle und einem in Lichtabstrahlrichtung vor der LED-Lichtquelle angeordnetem Diffusor, wobei die Lichtabgabe der Anordnung über den Diffusor erfolgt.The present invention relates to an arrangement for emitting light with at least one LED light source and a diffuser arranged in the light emission direction in front of the LED light source, wherein the light emission of the arrangement takes place via the diffuser.

Bei länglichen Leuchten bzw. Anordnungen zur Lichtabgabe, die beispielsweise im gewerblichen Bereich Anwendung finden, wurden bisher häufig Leuchtstofflampen als Lichtquellen eingesetzt. Die fortschreitende Entwicklung von LEDs führt nun immer mehr dazu, dass beispielsweise Leuchtstofflampen durch entsprechende LEDs ersetzt werden. Dies ergibt sich zum Einen daraus, dass LED-Lichtquellen erhebliche Vorteile bzgl. der Lebensdauer und Energieeffizienz im Vergleich zu herkömmlichen Leuchtmitteln aufweisen. Zum Anderen sind die mithilfe von LEDs erzielbaren Lichtstärken mittlerweile ausreichend hoch, so dass LED-Lichtquellen ohne Weiteres klassische Lichtquellen wie beispielsweise Leuchtstofflampen ersetzen können.In the case of elongated luminaires or arrangements for emitting light, which are used, for example, in the commercial sector, fluorescent lamps have hitherto frequently been used as light sources. 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 lifetime and energy efficiency compared to conventional light sources. On the other hand, the luminous intensity achievable with the help of LEDs is now sufficiently high that LED light sources can easily replace conventional light sources such as fluorescent lamps.

Aus der der amerikanischen Patentanmeldung US 2006/0245173 A1 ist beispielsweise eine Anordnung zur Lichtabgabe bekannt, bei der LEDs Anwendung finden.From the American patent application US 2006/0245173 A1 For example, an arrangement for emitting light is known to find use in the LEDs.

Der Einsatz von LED-Lichtquellen erfolgt des weiteren beispielsweise auch bereits bei der sogenannten Slotlight-Leuchte der Anmelderin, bei der es sich um eine längliche Leuchte handelt, über die eine diffuse Lichtabgabe erfolgt, um ein möglichst gleichmäßig aufgehelltes Lichtband zu schaffen. In Figur 1 ist beispielhaft eine mögliche Ausgestaltung einer derartigen Slotlight-Leuchte 1 im Querschnitt gezeigt, wobei die Leuchte 1 ein längliches Gehäuse 6 mit einer Lichtaustrittsöffnung aufweist. An der Lichtaustrittsöffnung ist ein Diffusor 3 angeordnet, der die Lichtaustrittsöffnung verschließt. Entsprechend erfolgt die Lichtabgabe der Leuchte 1 über den Diffusor 3.Furthermore, the use of LED light sources is carried out, for example, already in the so-called Slotlight lamp of the Applicant, which is an elongated lamp, via which a diffuse light emission takes place in order to create a uniformly brightened light band. In FIG. 1 is an example of a possible embodiment of such a slotlight lamp 1 shown in cross section, wherein the lamp 1 has an elongate housing 6 with a light exit opening. At the light exit opening a diffuser 3 is arranged, which closes the light exit opening. Accordingly, the light output of the lamp 1 via the diffuser 3rd

In dem Gehäuse 6 der Leuchte 1 ist desweiteren eine LED-Lichtquelle 2 vorgesehen, die derart in dem Gehäuse 6 platziert ist, dass sich der Diffusor 3 im Wesentlichen in Lichtabstrahlrichtung vor der LED-Lichtquelle 2 befindet. Um nun sicher zu stellen, dass ein möglichst großer Teil des von der LED-Lichtquelle 2 abgegebenen Lichts einigermaßen gleichmäßig auf den Diffusor 3 trifft, ist außerdem ein Reflektor 5 vorgesehen, der zwei seitlich an der Innenseite des Gehäuses 6 angeordnete Reflektorflügel 7 aufweist, wobei sich die beiden Reflektorflügel 7 im Wesentlichen zwischen der LED-Lichtquelle 2 und dem Diffusor 3 befinden. Durch diese Reflektorflügel 7 wird erreicht, dass ein Großteil des von der LED-Lichtquelle 2 abgegebenen Lichts auf den Diffusor 3 gerichtet wird, da auch das von der LED-Lichtquelle 2 abgegebenes Licht, welches nicht unmittelbar in Richtung des Diffusors 3 gestrahlt wird, durch Mehrfachreflektionen an den Reflektorflügeln 7 in Richtung des Diffusors 3 gelenkt werden kann.In the housing 6 of the lamp 1, an LED light source 2 is further provided, which is placed in the housing 6 such that the diffuser 3 substantially in Light emission direction in front of the LED light source 2 is located. In order to ensure that the greatest possible part of the light emitted by the LED light source 2 hits the diffuser 3 fairly uniformly, a reflector 5 is also provided, which has two reflector wings 7 arranged laterally on the inside of the housing 6 the two reflector wings 7 are located substantially between the LED light source 2 and the diffuser 3. By this reflector wing 7 ensures that a majority of the light emitted from the LED light source 2 is directed to the diffuser 3, as well as the light emitted from the LED light source 2, which is not directly blasted in the direction of the diffuser 3, by Multiple reflections can be directed to the reflector wings 7 in the direction of the diffuser 3.

Um eine möglichst hohe Effizienz bzw. einen hohen Wirkungsgrad der Leuchte 1 zu erreichen ist es jedoch erforderlich, dass die Reflektorflügel 7 ein möglichst hochwertiges Reflektormaterial aufweisen, um möglichst gute Reflektionseigenschaften aufzuweisen.In order to achieve the highest possible efficiency or high efficiency of the luminaire 1, however, it is necessary for the reflector vanes 7 to have the highest possible reflector material in order to have the best possible reflection properties.

Desweiteren ist es bei der Verwendung von LED-Lichtquellen sinnvoll und auch notwendig ein versehentliches Berühren der elektrischen Komponenten, insbesondere der LED-Platine, zu verhindern.Furthermore, it is useful in the use of LED light sources and also necessary to prevent accidental contact with the electrical components, in particular the LED board.

Hierzu ist bei der in Figur 1 gezeigten Leuchte 1 in dem Gehäuse 6 zusätzlich noch eine transparente Platte 4 vorgesehen, die zwischen der LED-Lichtquelle 2 und dem Diffusor 3 angeordnet ist. Durch diese wird erreicht, dass auch nach dem Entfernen des Diffusors 3 ein entsprechender Berührungsschutz für die LED-Lichtquelle 2 gegeben ist. Bei der in Figur 1 gezeigten Leuchte 1 ist dabei vorgesehen, dass die transparente Platte 4 durch den Reflektor 5 gehalten wird. Der Reflektor 5 ist hierbei im Wesentlichen U-förmig ausgebildet, wobei mittig innerhalb der U-Form die LED-Lichtquelle 2 angeordnet ist und die Öffnung der U-Form in Richtung des Diffusors 3 zeigt. Die Reflektorflügel 7, die die Flügel der U-Form bilden, sind hierbei leicht gekrümmt ausgebildet und über einen Mittelbereich der U-Form miteinander verbunden, wobei in den Reflektorflügeln 7 in der Nähe des Mittelbereichs entsprechende Aussparungen bzw. Ausnehmungen vorgesehen sind, in denen jeweils die Enden der transparenten Platte 4 angeordnet sind, wodurch die transparente Platte 4 durch den Reflektor 5 gehalten wird.This is in the in FIG. 1 shown lamp 1 in the housing 6 additionally provided a transparent plate 4, which is arranged between the LED light source 2 and the diffuser 3. Through this it is achieved that even after the removal of the diffuser 3, a corresponding contact protection for the LED light source 2 is given. At the in FIG. 1 shown lamp 1 is provided that the transparent plate 4 is held by the reflector 5. The reflector 5 is in this case substantially U-shaped, wherein the LED light source 2 is arranged centrally within the U-shape and the opening of the U-shape in the direction of the diffuser 3 shows. The reflector wings 7, which form the wings of the U-shape, are slightly curved in this case and connected to each other via a central region of the U-shape, wherein in the reflector wings 7 in the vicinity of the central region corresponding recesses or recesses are provided, in each case the ends of the transparent plate 4 are arranged, whereby the transparent plate 4 is held by the reflector 5.

Wie bereits erläutert, wird bei der in Figur 1 gezeigten Leuchte 1 ein nicht unerheblicher Teil des von der LED-Lichtquelle 2 abgegebenen Lichts durch Mehrfachreflektion an den Reflektorflügeln 7 in Richtung des Diffusors 3 gelenkt, weshalb auch trotz der Auswahl eines entsprechend hochwertigen Reflektormaterials nur eine bestimmte Effizienz bzw. ein bestimmter Wirkungsgrad erreicht werden kann.As already explained, at the in FIG. 1 1, a not inconsiderable part of the light emitted by the LED light source 2 is directed by multiple reflection on the reflector wings 7 in the direction of the diffuser 3, which is why even despite the selection of a correspondingly high-quality reflector material only a certain efficiency or a certain efficiency can be achieved ,

Der vorliegenden Erfindung liegt dementsprechend die Aufgabe zugrunde, die oben skizzierte Anordnung zur Lichtabgabe derart weiter zu entwickeln, dass die Effizienz bzw. der Wirkungsgrad gesteigert wird und gleichzeitig gewährleistet ist, dass nach wie vor ein unbeabsichtigtes Berühren der LED-Lichtquelle bzw. der entsprechenden Komponenten verhindert werden kann.The present invention is accordingly based on the object of further developing the arrangement outlined above for emitting light such that the efficiency or the efficiency is increased and at the same time ensuring that inadvertently touching the LED light source or the corresponding components can be prevented.

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

Erfindungsgemäß wird eine Anordnung zur Lichtabgabe vorgeschlagen, die mindestens eine LED-Lichtquelle und einen in Lichtabstrahlrichtung vor der LED-Lichtquelle angeordneten Diffusor aufweist, wobei die Lichtabgabe der Anordnung über den Diffusor erfolgt. Zusätzlich ist zwischen der LED-Lichtquelle und dem Diffusor eine Linsenanordnung vorgesehen, die derart ausgebildet und zwischen der LED-Lichtquelle und dem Diffusor angeordnet ist, dass das gesamte von der LED-Lichtquelle abgegebene Licht im Wesentlichen vollständig und gleichmäßig auf den Diffusor gerichtet ist. Zusätzlich sind seitlich zwischen der Linsenanordnung und dem Diffusor angeordnete Reflektorflügel vorgesehen, die eventuell vorhandenes Streulicht ebenfalls noch auf den Diffusor richten. Hierbei sind die Reflektorflügel auch seitlich neben der Linsenanordnung angeordnet, wobei die Linsenanordnung durch die Reflektorflügel in der Anordnung zur Lichtabgabe befestigt ist.According to the invention, an arrangement for emitting light is proposed which has at least one LED light source and a diffuser arranged in the light emission direction in front of the LED light source, wherein the light emission of the arrangement takes place via the diffuser. In addition, between the LED light source and the diffuser, there is provided a lens assembly formed between the LED light source and the diffuser such that all the light emitted by the LED light source is substantially completely and uniformly directed to the diffuser. In addition, reflector wings arranged laterally between the lens arrangement and the diffuser are also provided, which also possibly direct stray light to the diffuser. Here, the reflector wings are also arranged laterally next to the lens arrangement, wherein the lens arrangement is fixed by the reflector wings in the arrangement for emitting light.

Durch die Linsenanordnung wird somit ermöglicht, dass nahezu das gesamte von der LED-Lichtquelle abgegebene Licht auf den Diffusor trifft und diesen vollständig und gleichmäßig beleuchtet, ohne dass eine erheblicher Anteil des von der LED-Lichtquelle abgestrahlten Lichts an einem Reflektor reflektiert werden muss, wodurch erreicht wird, dass das von der LED-Lichtquelle abgegebene Licht effizient und mit einem hohen Wirkungsgrad in nahezu vollständiger und gleichmäßiger Weise über den Diffusor abgegeben werden kann.The lens arrangement thus enables almost all of the light emitted by the LED light source to strike the diffuser and complete it uniformly illuminated without having to reflect a significant portion of the light emitted by the LED light source on a reflector, thereby ensuring that the light emitted from the LED light source is efficiently and with high efficiency in a nearly complete and uniform manner over the Diffuser can be dispensed.

Zusätzlich können die Reflektorflügel Bestandteil eines im Wesentlichen U-förmig ausgestalteten Reflektors sein, wobei die LED-Lichtquelle mittig innerhalb der U-Form angeordnet ist und die Öffnung der U-Form in Richtung des Diffusors zeigt.In addition, the reflector wings may be part of a substantially U-shaped reflector, wherein the LED light source is arranged centrally within the U-shape and shows the opening of the U-shape in the direction of the diffuser.

Um zu erreichen, dass das von der LED-Lichtquelle abgegebene Licht möglichst vollständig und gleichmäßig durch die Linsenanordnung auf den Diffusor gelenkt wird, ist vorteilhafterweise vorgesehen, dass die Linsenanordnung im Querschnitt im Wesentlichen kegelstumpfförmig ausgebildet ist, wobei es sich bei dem der LED-Lichtquelle zugewandten Endbereich um die Deckfläche des Kegelstumpfs und bei dem dem Diffusor zugewandten Endbereich um die Grundfläche des Kegelstumpfs handelt.In order to ensure that the light emitted by the LED light source is directed as completely and uniformly as possible through the lens arrangement on the diffuser, it is advantageously provided that the lens arrangement is formed in cross-section substantially frusto-conical, wherein it is the LED light source facing end portion to the top surface of the truncated cone and at the end facing the diffuser to the base of the truncated cone.

Der der LED-Lichtquelle zugewandte Endbereich des Kegelstumpfs kann hierbei eine Vertiefung mit einer Bodenfläche und zwei Seitenflächen aufweisen, wobei die LED-Lichtquelle im Wesentlichen in der Vertiefung angeordnet ist, derart, dass die Bodenfläche und die Seitenflächen die Lichteintrittsfläche der Linsenanordnung für das von der LED-Lichtquelle abgegebenen Licht bilden, wobei die Bodenfläche konvex und die Seitenflächen konkav ausgebildet sein können. Zusätzlich kann der dem Diffusor zugewandte Endbereich des Kegelstumpfs im Wesentlichen eben sein und die Lichtaustrittsfläche der Linsenanordnung bilden und dabei derart ausgebildet sein, dass das die Linsenanordnung verlassende Licht leicht aufgeweitet wird. Außerdem können die beiden seitlichen Mantelflächen des Kegelstumpfs gekrümmt und totalreflektierend ausgebildet sein.The end portion of the truncated cone facing the LED light source may in this case have a recess with a bottom surface and two side surfaces, wherein the LED light source is arranged substantially in the recess, such that the bottom surface and the side surfaces of the light entry surface of the lens assembly for that of LED light emitted, the bottom surface convex and the side surfaces may be concave. In addition, the end region of the truncated cone facing the diffuser can be substantially planar and form the light exit surface of the lens arrangement and can be configured such that the light leaving the lens arrangement is slightly widened. In addition, the two lateral lateral surfaces of the truncated cone can be curved and designed to be totally reflective.

Durch diese spezielle Linsenanordnung ist ein effizientes Einsammeln, Bündeln und gleichmäßiges Verteilen des von der LED-Lichtquelle abgegebenen Lichts auf einen darunter liegenden bzw. anschließenden Diffusor möglich.This special lens arrangement permits efficient collection, bundling and uniform distribution of the light emitted by the LED light source to an underlying or subsequent diffuser.

Vorzugsweise kann auch vorgesehen sein, dass der dem Diffusor zugewandte Endbereich des Kegelstumpfs seitlich angeordnete, insbesondere mehrfach abgewickelte Arme zur Befestigung der Linsenanordnung in der Anordnung zur Lichtabgabe aufweist.Preferably, it can also be provided that the end region of the truncated cone facing the diffuser is laterally arranged, in particular multiply unwound arms for mounting the lens assembly in the light emitting device.

Hierdurch ergibt sich dann die Möglichkeit, dass die Linsenanordnung in den gleichen Aussparungen bzw. Ausnehmungen eines Reflektors befestigt werden kann, in denen bereits auch die aus der Slotlight-Leuchte bekannte transparente Platte gehalten wird bzw. befestigt ist.This then gives rise to the possibility that the lens arrangement can be fastened in the same recesses or recesses of a reflector, in which the transparent plate known from the slotlight luminaire is already held or fastened.

Vorteilhafterweise ist desweiteren vorgesehen, dass die Anordnung zur Lichtabgabe länglich ausgebildet ist und mehreren in Längsrichtung angeordnete LED-Lichtquellen aufweist. Hierbei kann dann vorgesehen sein, dass für alle LED-Lichtquellen eine gemeinsame Linsenanordnung vorgesehen ist, die über die gesamte Länge den gleichen Querschnitt aufweist. Bei dieser Ausgestaltung beeinflusst die Linsenanordnung die gleichmäßige Ausleuchtung des Diffusors insbesondere über die Breite der Lichtaustrittsöffnung, da über die gesamte Länge die Linsenanordnung den gleichen Querschnitt aufweist. Dementsprechend wir das von der LED-Lichtquelle abgegebene Licht im Wesentlichen nur in Querrichtung und somit in einer Ebene beeinflusst.Advantageously, it is further provided that the arrangement for emitting light is elongated and has a plurality of longitudinally arranged LED light sources. It can then be provided that a common lens arrangement is provided for all LED light sources, which has the same cross section over the entire length. In this embodiment, the lens arrangement influences the uniform illumination of the diffuser, in particular over the width of the light exit opening, since over the entire length the lens arrangement has the same cross section. Accordingly, the light emitted by the LED light source is essentially only transversely affected and thus in one plane.

Alternativ könnte aber auch vorgesehen sein, dass mehrere Linsenanordnungen vorhanden sind, wobei jeder Linsenanordnung mindestens eine LED-Lichtquelle zugeordnet ist. Hierdurch besteht dann beispielsweise die Möglichkeit, dass jeder LED-Lichtquelle eine einzelne Linsenanordnung zugeordnet wird, wodurch zusätzlich zur Querrichtung auch eine Beeinflussung in Längsrichtung und somit in zwei Ebenen möglich ist. Das Licht kann dann derart beeinflusst werden, dass es in Querrichtung im Wesentlichen vollständig auf den Diffusor gerichtet ist und im Gegensatz dazu in Längsrichtung eher breit verteilt wird. Durch diese eher breite Verteilung wird eine bessere Durchmischung des Lichts in Längsrichtung erreicht, wodurch der Einfluss von einzelnen LED-Ausfällen bzw. unterschiedlicher Farb- oder Lichtstromdichten (Abweichungen und damit bedingte Ungleichmäßigkeiten) minimiert werden kann.Alternatively, however, it could also be provided that a plurality of lens arrangements are present, wherein each lens arrangement is associated with at least one LED light source. In this way, for example, there is the possibility that each LED light source is assigned a single lens arrangement, which in addition to the transverse direction also an influence in the longitudinal direction and thus in two planes is possible. The light may then be influenced such that it is directed substantially completely towards the diffuser in the transverse direction and, on the contrary, tends to be distributed widely in the longitudinal direction. Due to this rather broad distribution, a better mixing of the light in the longitudinal direction is achieved, whereby the influence of individual LED failures or different color or luminous flux densities (deviations and consequent irregularities) can be minimized.

Vorzugweise kann desweiteren auch vorgesehen sein, dass die Anordnung zur Lichtabgabe ein Gehäuse mit einer Lichtaustrittsöffnung aufweist, wobei in dem Gehäuse die mindestens eine LED-Lichtquelle und die Linsenanordnung angeordnet sind und der Diffusor die Lichtaustrittsöffnung verschließt.Preferably, 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 at least one LED light source and the lens assembly are arranged and the diffuser closes the light exit opening.

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

Figur 1
aus dem Stand der Technik bekannte Anordnung zur Lichtabgabe im Querschnitt;
Figur 2
erfindungsgemäße Anordnung zur Lichtabgabe im Querschnitt;
Figur 3
erfindungsgemäße Anordnung zur Lichtabgabe im Querschnitt mit Strahlengängen des Lichts;
Figur 4
erfindungsgemäße Anordnung zur Lichtabgabe im Querschnitt mit Strahlengängen des Lichts;
The invention will be explained in more detail with reference to embodiments and the accompanying drawings. Show it:
FIG. 1
known arrangement for emitting light in cross-section from the prior art;
FIG. 2
inventive arrangement for light emission in cross section;
FIG. 3
arrangement according to the invention for emitting light in cross section with beam paths of the light;
FIG. 4
arrangement according to the invention for emitting light in cross section with beam paths of the light;

Figur 1 zeigt, wie bereits zuvor erläutert, beispielhaft eine bereits aus dem Stand der Technik bekannte Slotlight-Leuchte 1 der Anmelderin. Bei dieser Anordnung zur Lichtabgabe bzw. Leuchte 1 ist zwischen der LED-Lichtquelle 2 und dem Diffusor 3 eine transparente Platte 4 vorgesehen, die insbesondere als Berührungsschutz dient. Die Lichtlenkung des von der LED-Lichtquelle 2 abgegebenen Lichts erfolgt dagegen im Wesentlichen durch die Reflektorflügel 7 des Reflektors 5. Die Reflektorflügel 7 weisen hierbei entsprechende Ausnehmungen bzw. Aussparungen auf, in denen die Enden der transparenten Platte 4 angeordnet sind und dementsprechend durch den Reflektor 5 gehalten werden. Bei dieser aus dem Stand der Technik bekannten Leuchte 1 wird ein erheblicher Teil des von der LED-Lichtquelle 2 abgegebenen Lichts über Mehrfachreflektionen an den Reflektorflügeln 7 auf den Diffusor 3 gerichtet, wodurch die Reflektorflügel 7 ein entsprechend hochwertiges Reflektormaterial aufweisen müssen. FIG. 1 shows, as already explained above, by way of example, an already known from the prior art Slotlight lamp 1 of the applicant. In this arrangement for light emission or light 1, a transparent plate 4 is provided between the LED light source 2 and the diffuser 3, which serves in particular as protection against contact. By contrast, the light guide of the light emitted by the LED light source 2 essentially takes place through the reflector vanes 7 of the reflector 5. The reflector vanes 7 have corresponding recesses or recesses in which the ends of the transparent plate 4 are arranged and, accordingly, by the reflector 5 are kept. In this known from the prior art lamp 1, a significant portion of the light emitted from the LED light source 2 is directed by multiple reflections on the reflector wings 7 on the diffuser 3, whereby the reflector wings 7 must have a correspondingly high-quality reflector material.

Bei der vorliegenden Erfindung ist demgegenüber vorgesehen, dass anstelle der transparenten Platte 4 einen Linsenanordnung 14 verwendet wird. Figur 2 zeigt eine entsprechende erfindungsgemäße Leuchte 11 bzw. Anordnung zur Lichtabgabe, welche wiederum einen Diffusor 3 und eine LED-Lichtquelle 2 aufweist. Wie auch bereits bei der in Figur 1 gezeigten Leuchte 1 ist auch bei der in Figur 2 gezeigten Leuchte 11 die LED-Lichtquelle 2 innerhalb eines Gehäuses 6 angeordnet, wobei der Diffusor 3 die Lichtaustrittsöffnung des Gehäuses 6 verschließt. Ebenso weist die Leuchte 11 einen Reflektor 5 mit zwei seitlich innerhalb des Gehäuses 6 angeordneten Reflektorflügeln 7 auf, wobei die Linsenanordnung 14 in den gleichen Ausnehmungen bzw. Aussparungen befestigt bzw. gehalten wird, in denen auch die Enden der transparenten Platte 4 in Figur 1 gehalten werden bzw. befestigt sind. Hierzu weist die Linsenanordnung 14 zwei mehrfach abgewinkelte Arme auf, die jeweils seitlich am Hauptkörper der Linsenanordnung 14 angeordnet sind.In the present invention, on the other hand, it is provided that instead of the transparent plate 4, a lens assembly 14 is used. FIG. 2 shows a corresponding light fixture 11 according to the invention or arrangement for emitting light, which in turn has a diffuser 3 and an LED light source 2. As already at the in FIG. 1 shown lamp 1 is also in the in FIG. 2 shown light source 2, the LED light source 2 disposed within a housing 6, wherein the diffuser 3, the light exit opening of the housing 6 closes. Likewise, the lamp 11 has a reflector 5 with two arranged laterally within the housing 6 reflector wings 7, wherein the lens assembly 14 is secured or held in the same recesses or recesses in which the ends of the transparent plate 4 in FIG. 1 be held or attached. For this purpose, the lens arrangement 14 has two multiply angled arms which are each arranged laterally on the main body of the lens arrangement 14.

Der Hauptkörper der Linsenanordnung 14 ist hierbei kegelstumpfförmig ausgebildet, wobei es sich bei dem der LED-Lichtquelle 2 zugewandten Endbereich um die Deckfläche des Kegelstumpfs und bei dem dem Diffusor 3 zugewandten Endbereich um die Grundfläche des Kegelstumpfs handelt und die mehrfach abgewinkelten Arme an dem dem Diffusor 3 zugewandten Endbereich des Kegelstumpfs seitlich angeordnet sind.The main body of the lens assembly 14 is in this case frusto-conical, wherein it is the LED light source 2 end portion facing the top surface of the truncated cone and at the end facing the diffuser 3 to the base of the truncated cone and the multi-angled arms at the diffuser 3 facing end portion of the truncated cone are arranged laterally.

Der der LED-Lichtquelle 2 zugewandte Endbereich des Kegelstumpfs weist zusätzlich eine Vertiefung auf, wobei die LED-Lichtquelle 2 im Wesentlichen in der Vertiefung angeordnet ist. Die Vertiefung besteht hierbei im Wesentlichen aus einer Bodenfläche und zwei Seitenflächen, die entsprechend die Lichteintrittsfläche der Linsenanordnung 14 für das von der LED-Lichtquelle 2 abgegebene Licht bilden.The end region of the truncated cone facing the LED light source 2 additionally has a depression, wherein the LED light source 2 is arranged substantially in the depression. In this case, the depression consists essentially of a bottom surface and two side surfaces which correspondingly form the light entry surface of the lens arrangement 14 for the light emitted by the LED light source 2.

Die Bodenfläche ist hierbei als konvexe, sphärische Linse mit einem Radius von beispielsweise 13mm ausgeformt, wobei die Geometrie so gewählt ist, dass das von der LED-Lichtquelle 2 abgegebene Licht beispielsweise in einem Winkelbereich von -50° bis +50° auf die Bodenfläche trifft und durch die konvexe Form gebündelt wird. Dieses Licht verlässt dann die Linsenanordnung 14 über den dem Diffusor 3 zugewandten Endbereich des Kegelstumpfs, wobei dieser Endbereich im Wesentlichen eben ist und die Lichtaustrittsfläche der Linsenanordnung 14 bildet. Zusätzlich ist dieser Endbereich auch derart ausgebildet, dass das die Linsenanordnung 14 verlassende Licht leicht aufgeweitet bzw. gebrochen wird, beispielsweise in einem Winkelbereich von -35° bis 35°, derart, dass dieser Lichtanteil auf der gesamten Breite des Diffusors 3 gleichmäßig verteilt ist.The bottom surface is in this case formed as a convex, spherical lens having a radius of, for example, 13 mm, wherein the geometry is selected such that the light emitted by the LED light source 2 strikes the bottom surface, for example in an angle range of -50 ° to + 50 ° and is bundled by the convex shape. This light then leaves the lens arrangement 14 via the end region of the truncated cone facing the diffuser 3, this end region being substantially planar and forming the light exit surface of the lens arrangement 14. In addition, this end region is also designed such that the light leaving the lens arrangement 14 is slightly widened or broken, for example in one Angle range of -35 ° to 35 °, such that this proportion of light is distributed uniformly over the entire width of the diffuser 3.

In Figur 3 ist die in Figur 2 gezeigte erfindungsgemäße Leuchte 11 mit entsprechenden Lichtstrahlen dargestellt, wobei dort insbesondere das von der LED-Lichtquelle 2 abgegebene Licht gezeigt wird, welches auf die Bodenfläche der Vertiefung trifft. Durch die konvexe Form der Bodenfläche erfolgt hierbei zunächst eine Bündelung des Lichts, um dann anschließend wieder beim Verlassen der Linsenanordnung 14 über den dem Diffusor 3 zugewandten Endbereich aufgrund von Brechung leicht aufgeweitet zu werden, derart, dass das die Linsenanordnung 14 verlassende Licht den Diffusor 3 möglichst vollständig und gleichmäßig beleuchtet.In FIG. 3 is the in FIG. 2 illustrated lamp 11 according to the invention shown with corresponding light rays, where in particular the light emitted from the LED light source 2 is shown, which strikes the bottom surface of the recess. Due to the convex shape of the bottom surface, the light is first bundled, and then slightly expanded again on leaving the lens arrangement 14 via the end region facing the diffuser 3, so that the light leaving the lens arrangement 14 leaves the diffuser 3 illuminated as completely and evenly as possible.

Die Seitenflächen der Vertiefung sind demgegenüber als konkave, sphärische Linse mit einem Radius von beispielsweise ca. 4,5mm ausgeformt, wobei vorgesehen ist, dass diese Seitenflächen das von der LED-Lichtquelle 2 abgegebene Licht in einem Winkelbereich beispielsweise von -90° bis -50 und von +50° bis +90° aufnehmen. Die LED-Lichtquelle 2 kann hierbei in der Vertiefung derart angeordnet sein, dass sie sich im Mittelpunkt des Kreises der beiden Seitenflächen befindet, so dass keine Richtungsänderung des Lichts entsteht. Die Seitenflächen lassen dann das Licht radial (d.h. ohne Beugung) an die seitlichen Mantelflächen des Kegelstumpfs durch. Diese seitlichen Mantelflächen sind hierbei gekrümmt und totalreflektierend ausgebildet, so dass das von den Seitenflächen zu den Mantelflächen gelenkte Licht per Totalreflektion umgelenkt wird, derart, dass nach Verlassen der Linsenanordnung 14 über den dem Diffusor 3 zugewandten Endbereich das Licht den Diffusor ebenfalls vollständig und gleichmäßig beleuchtet. Hierzu ist anzumerken, dass auch dieses Licht wiederum durch Brechung durch den dem Diffusor zugewandten Endbereich leicht aufgeweitet wird.The side surfaces of the recess are in contrast formed as a concave, spherical lens having a radius of for example about 4.5 mm, wherein it is provided that these side surfaces emitted by the LED light source 2 light in an angular range, for example, from -90 ° to -50 and from + 50 ° to + 90 °. The LED light source 2 can in this case be arranged in the recess such that it is located in the center of the circle of the two side surfaces, so that no change in direction of the light is produced. The side surfaces then transmit the light radially (i.e., without diffraction) to the lateral lateral surfaces of the truncated cone. These lateral lateral surfaces are in this case curved and formed totally reflecting, so that the directed from the side surfaces to the lateral surfaces of light is deflected by total reflection, such that after leaving the lens assembly 14 via the diffuser 3 end facing the light also illuminates the diffuser completely and evenly , It should be noted that this light is again slightly widened by refraction through the end region facing the diffuser.

In Figur 4 sind nun entsprechende Lichtstrahlen gezeigt, die von der LED-Lichtquelle 2 in die Linsenanordnung 14 über die Seitenflächen der Vertiefung gelangen. Figur 4 zeigt hierbei wiederum die in Figur 2 gezeigte erfindungsgemäße Leuchte 11.In FIG. 4 Now corresponding light beams are shown, which pass from the LED light source 2 in the lens assembly 14 via the side surfaces of the recess. FIG. 4 again shows the in FIG. 2 shown lamp 11.

Sowohl das über die Bodenfläche der Vertiefung in die Linsenanordnung 14 eintretende Licht als auch das über die Seitenflächen der Vertiefung in die Linsenanordnung 14 eintretende Licht wird durch die Linsenanordnung 14 derart beeinflusst, dass es nach Verlassen der Linsenanordnung 14 den Diffusor 3 gleichmäßig und vollständig beleuchtet, was zu einer höheren Effizienz bzw. einem besseren Wirkungsgrad führt.Both the light entering the lens assembly 14 via the bottom surface of the recess and the light entering the lens assembly 14 via the side surfaces of the recess Lens assembly 14 entering light is influenced by the lens assembly 14 such that it after leaving the lens assembly 14, the diffuser 3 evenly and completely illuminated, resulting in a higher efficiency and a better efficiency.

Zusätzlich ist auch anzumerken, dass durch die Ausgestaltung der Linsenanordnung 14 und insbesondere auch durch die Befestigung in den gleichen Aussparungen bzw. Ausnehmungen, die Linsenanordnung 14, ebenso wie die transparente Platte 4, als Berührungsschutz für die LED-Lichtquelle 2 und die entsprechenden Komponenten dient und dementsprechend ein unbeabsichtigtes Berühren dieser Teile bei Öffnen des Diffusors 3 weitestgehend verhindert werden kann.In addition, it should also be noted that the design of the lens assembly 14 and in particular also by the attachment in the same recesses or recesses, the lens assembly 14, as well as the transparent plate 4, serves as protection against contact for the LED light source 2 and the corresponding components and accordingly accidental contact with these parts when opening the diffuser 3 can be largely prevented.

Dementsprechend wäre es auch vorstellbar, dass bei bereits bestehenden Slotlight-Leuchten 1 die transparenten Platten 4 durch entsprechende Linsenanordnungen 14 ersetzt werden und somit eine neue Leuchte 11 entsprechend der erfindungsgemäßen Anordnung zur Lichtabgabe geschaffen wird.Accordingly, it would also be conceivable that in existing slotlight lights 1, the transparent plates 4 are replaced by corresponding lens assemblies 14 and thus a new light 11 is created according to the inventive arrangement for light output.

Desweiteren ist noch anzumerken, dass es sich bei den bekannten Slotlight-Leuchten um längliche Leuchten handelt, die über die Länge verteilt mehrere LED-Lichtquellen aufweisen. Hierbei kann dann vorgesehen sein, dass für alle LED-Lichtquellen eine gemeinsame Linsenanordnung vorgesehen ist, die in Längsrichtung gesehen einen unveränderten Querschnitt aufweist. Hierbei wird das Licht dann im Wesentlichen lediglich in Querrichtung und somit nur in einer Ebene beeinflusst. Alternativ könnten aber auch mehrere Linsenanordnungen vorgesehen seien, beispielsweise für jede LED-Lichtquelle eine Linsenanordnung. Hierdurch besteht dann die Möglichkeit, dass das Licht sowohl in Querrichtung als auch in Längsrichtung und somit in mehreren Ebenen beeinflusst werden kann. In Längsrichtung könnte beispielsweise eine sehr breite Verteilung bzw. Erzeugung von sehr flachem Licht gewünscht sein, um eine noch bessere Lichtdurchmischung zu erzielen.Furthermore, it should be noted that the known slotlight luminaires are elongate luminaires which have a plurality of LED light sources distributed over the length. In this case, it can then be provided that a common lens arrangement is provided for all LED light sources, which has an unchanged cross-section in the longitudinal direction. In this case, the light is then essentially influenced only in the transverse direction and thus only in one plane. Alternatively, however, a plurality of lens arrangements could also be provided, for example a lens arrangement for each LED light source. As a result, there is the possibility that the light can be influenced both in the transverse direction and in the longitudinal direction and thus in several planes. In the longitudinal direction, for example, a very wide distribution or generation of very flat light may be desired in order to achieve even better light mixing.

Zu dem Reflektor bzw. den Reflektorflügeln ist noch anzumerken, dass diese nach wie vor vorhanden sein können, um noch eventuell vorhandenes Streulicht auf den Diffusor zu richten. Hierbei ist es dann allerdings nicht mehr erforderlich, ein besonders hochwertiges und somit teures Reflektormaterial zu verwenden, da der Anteil des Lichts der von den Reflektorflügeln auf den Diffusor gelenkt wird, erheblich geringer ist, als bei der in Figur 1 gezeigten Leuchte.To the reflector or the reflector wings is still to be noted that they can still be present in order to direct any existing stray light on the diffuser. However, it is then no longer necessary to use a particularly high-quality and therefore expensive reflector material, since the Proportion of the light which is directed by the reflector wings on the diffuser, is considerably less than in the FIG. 1 shown light.

Claims (12)

  1. Light emitting assembly (11) with at least one LED light source (2) and a diffuser (3) arranged in the light emitting direction in front of the LED light source (2), wherein the light emission of the assembly (11) takes place via the diffuser (3), and between the LED light source (2) and the diffuser (3) a lens assembly (14) is provided that is configured and arranged between the LED light source (2) and the diffuser (3) in such a way that all the light emitted from the LED light source (2) is essentially completely and evenly directed at the diffuser (3), and wherein reflector wings (7) are provided laterally between the lens assembly (14) and the diffuser (3), characterized in that the reflector wings (7) are also arranged laterally next to the lens assembly (14) and the lens assembly (14) is attached by the reflector wings (7) in the light emitting assembly (11).
  2. Light emitting assembly according to claim 1, characterized in that the reflector wings (7) are part of an essentially U-shaped reflector (5), wherein the LED light source (2) is arranged centrally within the U-shape and the opening of the U-shape points towards the diffuser (3).
  3. Light emitting assembly according to one of the preceding claims, characterized in that the lens assembly (14) is configured in cross section essentially in the shape of a truncated cone, wherein the end section facing the LED light source (2) is the top surface of the truncated cone and the end section facing the diffuser (3) is the base surface of the truncated cone.
  4. Light emitting assembly according to claim 3, characterized in that the end section of the truncated cone facing the LED light source (2) has an indentation with a bottom surface and two lateral surfaces, wherein the LED light source (2) is essentially arranged in the indentation in such a way that the bottom surface and the lateral surfaces form the light entry surface of the lens assembly (14) for the light emitted by the LED light source (2).
  5. Light emitting assembly according to claim 4, characterized in that the bottom surface is convex and the lateral surfaces are concave.
  6. Light emitting assembly according to one of claims 3 to 5, characterized in that the end section of the truncated cone facing the diffuser (3) is essentially plane and forms the light exit surface of the lens assembly (14) and thereby is configured in such a way that the light leaving the lens assembly (14) gets slightly expanded.
  7. Light emitting assembly according to one of claims 3 to 6, characterized in that the two lateral shell surfaces of the truncated cone are configured curved and totally reflective.
  8. Light emitting assembly according to one of claims 3 to 7, characterized in that the end section of the truncated cone facing the diffuser (3) has laterally arranged, in particular multiply angled, arms for attaching the lens assembly (14) in the light emitting assembly (11).
  9. Light emitting assembly according to one of the preceding claims, characterized in that the light emitting assembly (11) is configured oblong and has several LED light sources (2) arranged in longitudinal direction.
  10. Light emitting assembly according to claim 9, characterized in that a mutual lens assembly (14) is provided for all LED light sources (2) that has the same cross section over the entire length.
  11. Light emitting assembly according to claim 9, characterized in that several lens assemblies (14) are provided, wherein a LED light source (2) is assigned to each lens assembly (14).
  12. Light emitting assembly according to one of the preceding claims, characterized in that the light emitting assembly (11) has a housing (6) with a light exit opening, wherein in the housing (6) the at least one LED light source (2) and the lens assembly (14) are arranged and the diffuser (3) closes the light exit opening.
EP13161035.4A 2012-03-29 2013-03-26 Light emitting assembly Active EP2644982B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012205067A DE102012205067A1 (en) 2012-03-29 2012-03-29 Arrangement for emitting light

Publications (2)

Publication Number Publication Date
EP2644982A1 EP2644982A1 (en) 2013-10-02
EP2644982B1 true EP2644982B1 (en) 2015-09-09

Family

ID=48045278

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13161035.4A Active EP2644982B1 (en) 2012-03-29 2013-03-26 Light emitting assembly

Country Status (2)

Country Link
EP (1) EP2644982B1 (en)
DE (1) DE102012205067A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013226181B4 (en) 2013-12-17 2021-01-28 Zumtobel Lighting Gmbh Optical element, as well as arrangement for light emission
DE102020208079A1 (en) 2020-06-30 2021-12-30 Robert Bosch Gesellschaft mit beschränkter Haftung Lighting unit for illuminating one or more vehicle occupants
DE102020208091A1 (en) 2020-06-30 2021-12-30 Robert Bosch Gesellschaft mit beschränkter Haftung Lighting unit for illuminating a vehicle interior of a vehicle
WO2023084101A1 (en) 2021-11-15 2023-05-19 Zumtobel Lighting Gmbh Optical element and luminaire equipped therewith
EP4180712A1 (en) 2021-11-15 2023-05-17 Zumtobel Lighting GmbH Sealing frame for lighting lens

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7425077B2 (en) * 2005-05-02 2008-09-16 Pelton & Crane LED-powered dental operatory light
US7918583B2 (en) * 2006-08-16 2011-04-05 Rpc Photonics, Inc. Illumination devices
DE102007002403B4 (en) * 2007-01-17 2016-03-03 Osram Gmbh Lighting arrangement, multiple light module, luminaire and their use
DE202009013230U1 (en) * 2009-09-16 2011-02-03 Ledon Lighting Jennersdorf Gmbh LED luminaire element for illuminating a light box with homogeneous light distribution
DE102010014289B4 (en) * 2010-04-08 2014-03-27 Trilux Gmbh & Co. Kg Light module and luminaire with light module
DE202010008480U1 (en) * 2010-09-08 2011-12-09 Zumtobel Lighting Gmbh LED light for the production of white light

Also Published As

Publication number Publication date
DE102012205067A1 (en) 2013-10-02
EP2644982A1 (en) 2013-10-02

Similar Documents

Publication Publication Date Title
DE4342928C2 (en) Reflector arrangement with a light source arranged therein for a vehicle lamp
EP2644982B1 (en) Light emitting assembly
EP2688769B1 (en) Vehicle lamp for lighting the interior of the vehicle
DE102008060874A1 (en) lamp
EP2587134B1 (en) Lamp
DE102004063111B4 (en) Light unit with light source, light guide body and light deflection area
DE202010008480U1 (en) LED light for the production of white light
EP3037719A1 (en) Led lense body for generating a direct and indirect light portion
DE10022779A1 (en) Rod-shaped light guide
EP2895790B1 (en) Louver luminaire having led light sources
DE10011304B4 (en) Luminaire with inhomogeneous light emission
EP2339602A1 (en) Switching device and fibre optic cable
DE10011378B4 (en) Hollow-light luminaire with indirect light emission
EP3832194B1 (en) Optical system for influencing the light emitted by an extended light source
DE102012003071B4 (en) reflector spotlight
DE102017127355B4 (en) Light for a motor vehicle body
DE10153756B4 (en) Luminaire with segmented inner reflector
EP2472178A1 (en) Integrated lights
DE102008016496A1 (en) Luminaire with punctiform light source and asymmetrical light emission characteristic
EP1111298B1 (en) Light guide lamp with shield in two planes
DE10318952A1 (en) Vehicle light has light source and optics with curved external surface to reflect all light and distribute outgoing light
EP3964749B1 (en) Lighting device for a motor vehicle
EP2880360B1 (en) Led emitter
EP2107297B1 (en) Lamp, in particular room lamp
EP1467139B1 (en) Lighting device

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

17P Request for examination filed

Effective date: 20140331

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RIC1 Information provided on ipc code assigned before grant

Ipc: F21V 13/12 20060101ALI20150415BHEP

Ipc: F21Y 101/02 20060101ALN20150415BHEP

Ipc: F21Y 103/00 20060101ALN20150415BHEP

Ipc: F21V 13/02 20060101AFI20150415BHEP

INTG Intention to grant announced

Effective date: 20150513

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 748437

Country of ref document: AT

Kind code of ref document: T

Effective date: 20150915

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: WEINMANN ZIMMERLI, CH

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502013001114

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20150909

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151210

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151209

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 4

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160109

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160111

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502013001114

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20160610

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160326

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160326

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20130326

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

REG Reference to a national code

Ref country code: CH

Ref legal event code: PK

Free format text: BERICHTIGUNGEN

RIC2 Information provided on ipc code assigned after grant

Ipc: F21Y 103/00 20160101ALN20150415BHEP

Ipc: F21V 13/12 20060101ALI20150415BHEP

Ipc: F21Y 101/02 20000101ALN20150415BHEP

Ipc: F21V 13/02 20060101AFI20150415BHEP

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20220318

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20220325

Year of fee payment: 10

REG Reference to a national code

Ref country code: DE

Ref legal event code: R084

Ref document number: 502013001114

Country of ref document: DE

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20230321

Year of fee payment: 11

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230530

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20230402

Year of fee payment: 11

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 748437

Country of ref document: AT

Kind code of ref document: T

Effective date: 20230326

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230331

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20230326

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20240328

Year of fee payment: 12