EP2824380B1 - Éclairage - Google Patents

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Publication number
EP2824380B1
EP2824380B1 EP14175532.2A EP14175532A EP2824380B1 EP 2824380 B1 EP2824380 B1 EP 2824380B1 EP 14175532 A EP14175532 A EP 14175532A EP 2824380 B1 EP2824380 B1 EP 2824380B1
Authority
EP
European Patent Office
Prior art keywords
light
holding means
light strip
side wings
lamp
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
EP14175532.2A
Other languages
German (de)
English (en)
Other versions
EP2824380A1 (fr
Inventor
Andreas Betz
Bernd Müller
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.)
Regent Beleuchtungskoerper AG
Original Assignee
Regent Beleuchtungskoerper AG
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
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Publication of EP2824380A1 publication Critical patent/EP2824380A1/fr
Application granted granted Critical
Publication of EP2824380B1 publication Critical patent/EP2824380B1/fr
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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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting
    • F21V17/164—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting the parts being subjected to bending, e.g. snap joints
    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F21S8/043—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures mounted by means of a rigid support, e.g. bracket or arm
    • 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 invention relates to a lamp according to the preamble of independent claim 1.
  • Luminaires of this type with a base profile and a light strip on which at least one operating device and at least one lamp that can be operated using the control gear are arranged, with the light strip being detachably mounted on the base profile, can be used to illuminate closed or open spaces and to illuminate facades or signs will.
  • luminaires To illuminate interior and exterior spaces, elongate luminaires are often used today, which extend along a space or an object on which they are arranged. Such luminaires are usually referred to as linear luminaires and can, for example, be attached directly to walls, suspended or attached to ceilings.
  • linear lights typically include a straight or curved, mostly elongated or oblong base profile, which is attached directly or indirectly to the object or the wall or the ceiling.
  • linear lights usually have a light strip along which a series of light sources such as LED light sources and associated control gear are attached.
  • primary optics are often used, which cover the light sources in such a way that the light emitted by the light sources has preferred emission characteristics.
  • the hue, scattering and/or direction of the emitted light are fixed with primary optics.
  • Linear lights are typically closed off by an at least partially transparent cover or an external diffuser as secondary optics, which encloses at least the areas of the light that do not face the wall or ceiling.
  • the base profile When installing a linear light, the base profile is usually first attached to a target position on the wall, ceiling or object, for example screwed or suspended.
  • the light strip provided with the illuminants is then mostly detachably mounted on the base profile fastened to the object or to the wall or ceiling.
  • the primary optics are mounted on the base profile and then the cover or the outer diffuser is also mounted on the base profile.
  • U.S. 2012/0155073 A1 the US 2013/0083524 A1 , the EP 2 375 128 A2 and the JP 2005/019299 A an embodiment of such linear lights is described.
  • linear luminaires are positioned indoors or outdoors in such a way that they illuminate the relevant room well on the one hand and impair the use of the room as little as possible on the other.
  • the linear lights are usually positioned in places that are relatively difficult to access, such as in the middle of the ceiling in a room. Accordingly, the assembly of such linear lights with the at least four steps described above is relatively complex, which can be tedious in particular when equipping large rooms with a relatively large number of such linear lights.
  • the maintenance such as the replacement of defective lamps, is relatively expensive in an analogous manner.
  • the object is achieved by a lamp as defined in independent patent claim 1 .
  • Advantageous design variants of the device according to the invention result from the dependent patent claims.
  • a luminaire comprises a base profile and a light bar on which at least one operating device and at least one illuminant that can be operated by means of the operating device are arranged, the light bar being detachably mounted on the base profile.
  • the light strip is made from a translucent material and encloses the at least one light source in its intended emission direction.
  • the light strip comprises a front section and two side wings, each adjoining the front section, which are opposite one another and are essentially mirror-symmetrical.
  • the side wings of the light strip each have a tapered area in cross-section towards their ends facing away from the front section, with the outer sides of the tapered areas being designed to be bevelled.
  • the base profile and the light strip can have an elongate basic shape, so that the light can be a linear light in particular. In this case, the lamp can in particular have a plurality of light sources.
  • translucent in connection with the invention refers in particular to an attenuated or undamped transparency of the light generated by means of the illuminant and the operating device.
  • exposed direction of emission can refer to a direction of light propagation in which the lamp illuminates as intended.
  • the light bar can be used directly as the primary optics of the lamp.
  • it can perform its usual function as a carrier of the light-generating components of the lamp. In this way it is possible that the number of steps in the assembly of the lamp is kept low, that the entire construction is designed relatively easily and can be prepared, and that the handling is relatively comfortable and efficient, especially during assembly and maintenance of the lamp.
  • the at least one light source is preferably an LED light source.
  • LED lamps have various advantageous properties such as high energy efficiency, long service life and cost-effective production. They are enjoying increasing popularity. However, it is often desirable to adapt the light generated by LED light sources by means of primary optics, so that the light according to the invention can also be advantageous in particular with LED light sources.
  • the LED illuminant preferably comprises a printed circuit board, possibly with control electronics, and at least one light-emitting diode. Such LED lamps can be efficiently attached and used on the light bar, especially in large numbers.
  • the translucent material of the light bar is preferably adapted to the at least one light source and the operating device in such a way that light emitted by the at least one light source and penetrating the light bar has a predefined emission characteristic.
  • properties of the at least one illuminant such as scattering, attenuation, beam direction, focusing and/or color or tone can be adjusted in a desired manner.
  • the light bar can be configured efficiently as a primary optic and the combination of light bar and light source can be inserted and used efficiently and easily.
  • the translucent material of the light bar is preferably a plastic and in particular a polycarbonate or a polymethyl methacrylate (PMMA).
  • PMMA polymethyl methacrylate
  • Such plastics enable, on the one hand, a robust configuration of light strips in many possible geometries.
  • they can be translucent in a variety of ways, so that the desired emission characteristics can be predefined flexibly and adapted to an intended area of use.
  • light strips can be produced from such a material relatively easily and inexpensively and have other properties preferred for use, such as elasticity or longevity.
  • the lamp preferably comprises a carrier profile on which the at least one operating device and the at least one lamp are fixedly mounted, with the carrier profile being detachably mounted on the light bar.
  • the carrier profile can have a relatively simple geometry. For example, it can essentially be designed like a slat or a board. Such a carrier profile enables a relatively simple installation of the light-generating components of the lamp. In particular when the lamp is designed with a large number of light sources, such a carrier profile enables simple handling and simple maintenance. For example, the carrier profile can be replaced or replaced en bloc together with the lamps in a relatively simple manner.
  • the light strip comprises a front section and two side wings, each adjoining the front section, which are opposite one another and are essentially mirror-symmetrical.
  • the term “in cross section” refers to a section transverse to a longitudinal direction or to an upright or vertical orientation of the luminaire.
  • the side wings of the light strip form an obtuse angle with the front section, preferably in cross-section, in each case at a transition area adjoining the front section.
  • the front section and the two side wings can be configured together in the transition area in cross-section essentially trapezoidal, so that the Light bar in the first area widens against the front section. In this way an interior of the light strip can be relatively easily accessible.
  • the side wings of the light strip preferably have holding means on their insides and the support profile has corresponding holding means, the support profile being detachably mounted on the light strip by the holding means of the support profile interacting with the holding means of the side wings.
  • the holding means of one of the two side wings are preferably hook-shaped in cross section and open toward the front section, and the holding means of the other of the two side wings are preferably hook-shaped in cross section and open toward the front section.
  • the holding means can be designed as hook-shaped rails.
  • One of the holding means of the carrier profile is preferably designed as a socket arranged on one transverse side of the carrier profile, so that it encompasses the hook-shaped holding means of one of the two side wings, and the other of the holding means of the carrier profile is preferably hook-shaped in cross section and on the other transverse side of the Support profile so that it engages in the hook-shaped holding means of the other of the two side wings.
  • the carrier profile can be efficiently inserted or snapped into the light bar.
  • the light bar can be deformed so elastically that the hook-shaped holding means of the other of the two side wings is lifted out of the hook-shaped holding means of the carrier profile and the carrier profile is thus detached from the light bar.
  • the carrier profile can be pushed lengthwise out of the light bar and removed in this way.
  • the front section of the light strip preferably describes two eyes in cross section and a nose lying between them.
  • the nose of the front section can Enclose light-emitting diode and the two eyes each other components such as for example fasteners.
  • the light bar can be provided with various functions. For example, the direction of the light radiation or its scattering can be defined. Or a transfer of heat away from the light emitting diode can be promoted.
  • a support or support, which supports the at least one light source, is preferably arranged on or next to the nose of the front section of the light strip.
  • a configuration of the front section with a support can, among other things, further promote the heat transfer.
  • the side wings of the light bar preferably have a concave curvature in cross section and the base profile has two corresponding projections, the light bar being detachably mounted on the base profile by the projections of the base profile engaging in the concave curvatures of the side wings of the light bar.
  • the light bar can be elastically deformed until the projections of the base profile no longer engage in the receptacles formed by the curvatures. In particular, this can be done by moving the side wings of the light strip towards one another.
  • the side wings of the light strip each have a tapered area in cross-section towards their ends facing away from the front section, with the outer sides of the tapered areas being designed with a bevel.
  • Such tapered areas enable the light strip to be pressed against the projections of the base profile for assembly, as a result of which the side wings are pressed together until the projections engage in the receptacles formed by the curves.
  • the light bar can be easily and efficiently snapped into the base profile for installation.
  • the lamp preferably includes an external diffuser which at least partially encloses the light bar and the lamp.
  • an external diffuser can be used as secondary optics be translucent at least in a certain spectrum or range.
  • the light bar 2 comprises a front section 21 with two eyes 211 and a nose 212 lying between them, a first side wing 22 adjoining the front section 21 on the right and an opposite,
  • the first side wing 22 and the second side wing 23 each have a transition region 221, 231 directly adjoining the front section 21.
  • the two transition regions 221, 231 each circumscribe an obtuse angle with the front section 21 and together with this form an upwardly open trapezium.
  • the carrier profile 3 is arranged in the light strip 2, the carrier profile 3 having a longitudinal base plate 33, on the right side of which a hook-shaped holding means 32 and on the left side a socket 31 are designed as holding means.
  • the socket 31 corresponds to the hook-shaped holding means 232 of the second Side wing 23 and the hook-shaped holding means 32 of the carrier profile 3 to the hook-shaped holding means 222 of the first side wing 22.
  • the socket 31 engages around the hook-shaped holding means 232 of the second side wing 23 and the hook-shaped holding means 222 of the first side wing 22 lies in the hook-shaped holding means 32 of the carrier profile 3 the carrier profile 3 is mounted on the light bar 2 and is held by it.
  • the carrier profile 3 and the light bar 2 together form a unit and can be handled in one operation.
  • the unit can be mounted on the base profile 1 in one step.
  • the carrier profile 3 is equipped on an upper side of its base plate 33 with a plurality of ballasts 5 as operating devices and on an underside of its base plate 33 with a plurality of LED lamps 4.
  • the LED lamps 4 each have a circuit board, possibly with control electronics and at least one LED 41 on.
  • the circuit board is fastened to the base plate 33 of the carrier profile 3 with a first screw 42 and the ballast 5 with a second screw 43 .
  • the front section 21 of the light bar 2 has the two eyes 211 and the nose 212, one of the eyes 211 - in 1 is this the right one - the second screw 43, and the other of the eyes 211 - in 1 if this is the left one - covers the first screw 42 to the outside.
  • the nose 212 encloses the light-emitting diode 41 in its intended emission direction, ie essentially downwards.
  • the light strip 2 can define or influence the emission characteristics of the LED lighting means 4 .
  • a support 213 which extends in the direction of the carrier profile 3 and on which the carrier profile 3 rests.
  • the support 213 also serves to press the LED circuit board against the carrier profile 3 over its entire length in order to promote heat transfer.
  • transition regions 221, 231 of the first side wing 22 and of the second side wing 23 each merge upwards into a concave curvature 223, 233, from which in turn a tapered region 224, 234 extends upwards.
  • the tapered areas 224, 234 of the first side wing 22 and the second side wing 23 have a beveled outer surface 225, 235, respectively.
  • a base profile 1 of the lamp 7 is shown in cross section.
  • the base profile 1 comprises a base section which is essentially flat on the outside and a side section which is arranged at a right angle thereto.
  • the base section and the side sections of the base profile 1 have several longitudinal struts on their insides, with which the base profile 1 is stabilized.
  • the side sections At an end facing away from the base section, the side sections each have an inwardly extending projection 11 .
  • the side sections On the outside, the side sections each have a groove 12 with a triangular cross section approximately halfway up.
  • the light bar 2 detachably mounted in the base profile 1.
  • the light bar 2 is pressed against the base profile 1 in such a way that the two projections 11 rest on the beveled outer sides 225, 235 of the tapered areas 224, 234 of the first side wing 22 and the second side wing 23 work.
  • the first side wing 22 and the second side wing 23 are bent towards one another or elastically deformed until the projections 11, past the tapered areas 224, 234, engage from the outside in the concave curvatures 223, 233 of the first side wing 22 and the second side wing 23 .
  • the first side wing 22 and the second side wing 23 are moved outwards again in this position, so that the projections 11 arranged in the concave curvatures 223, 233 hold the light bar 2 on the base profile 1.
  • the light bar 2 is thus snapped into the base profile 1 and releasably mounted on it.
  • the lamp 7 is completed by an external diffuser 6.
  • the outer diffuser 6 is configured in cross section as a rectangle open on one broad side.
  • the longitudinal sides of the outer diffuser each have a bar-shaped latching lug 61 on their inner side, which is arranged in the grooves 12 of the base profile 1 so that the outer diffuser 6 is held on the base profile 1 .
  • the present disclosure also includes embodiments with any combination of features that are mentioned or shown above or below for different embodiments. It also includes individual features in the figures, even if they are shown there in connection with other features and/or are not mentioned above or below.
  • the alternatives of embodiments described in the figures and the description and individual alternatives of their features can also be excluded from the subject matter of the invention or from the disclosed objects.
  • the disclosure includes embodiments that exclusively include the features described in the claims or in the exemplary embodiments, as well as those that include additional other features.
  • the term “comprising” and derivatives thereof does not exclude other elements or steps.
  • the indefinite article also includes “ein” or “eine” and Derivatives from it a multitude not from.
  • the functions of several features listed in the claims can be fulfilled by a unit or a step.
  • the terms “about” and “approximately” in the context of a given numerical value or range may refer to a value or range that is within 20%, within 10%, within 5%, or within 2% of the given value or range. Any reference signs in the claims should not be construed as limiting the scope of the claims.

Claims (12)

  1. Luminaire (7) comportant un profilé de base (1) et une barre lumineuse (2) sur laquelle sont disposés au moins un dispositif de commande (5) et au moins un moyen lumineux (4) pouvant être commandé au moyen du dispositif de commande (5), la barre lumineuse (2) étant montée de manière amovible sur le profilé de base (1), constituée d'un matériau transparent et enfermant l'au moins un moyen lumineux (4) dans sa direction de rayonnement prédéfinie, la barre lumineuse (2) comprenant, en section transversale, une section avant (21) et deux ailes latérales (22, 23) opposées l'une à l'autre, sensiblement symétriques en miroir et respectivement attenantes à la section avant, caractérisé en ce que les ailes latérales (22, 23) de la barre lumineuse (2) présentent, en section transversale, respectivement une zone conique (224, 234) vers leurs extrémités opposées à la section avant (21), les côtés extérieurs (225, 235) des zones coniques (224, 234) étant conçus en biseau.
  2. Luminaire (7) selon la revendication 1, dans lequel l'au moins un moyen lumineux (4) est un moyen lumineux à DEL (4).
  3. Luminaire (7) selon la revendication 2, dans lequel le moyen lumineux à DEL (4) comprend une carte de circuit imprimé comportant au moins une diode électroluminescente (41).
  4. Luminaire (7) selon l'une des revendications précédentes, dans lequel le matériau transparent de la barre lumineuse (2) est adapté à l'au moins un moyen lumineux (4) et au dispositif de commande (5) de telle sorte que de la lumière émise par l'au moins un moyen lumineux (4) et pénétrant la barre lumineuse (2) présente une caractéristique de rayonnement prédéfinie.
  5. Luminaire (7) selon l'une des revendications précédentes, dans lequel le matériau transparent de la barre lumineuse (2) est une matière plastique et en particulier un polycarbonate ou un polyméthacrylate de méthyle.
  6. Luminaire (7) selon l'une des revendications précédentes, lequel comprend un profilé de support (3) sur lequel l'au moins un dispositif de commande (5) et l'au moins un moyen lumineux (4) sont montés de manière fixe, le profilé de support (3) étant monté de manière amovible sur la barre lumineuse (2).
  7. Luminaire (7) selon l'une des revendications précédentes, dans lequel les ailes latérales (22, 23) de la barre lumineuse (2) forment, en section transversale, un angle obtus avec la section avant (21), respectivement au niveau d'une zone de transition (221, 231) adjacente à la section avant.
  8. Luminaire (7) selon la revendication 7, dans lequel les ailes latérales (22, 23) de la barre lumineuse (2) présentent respectivement des moyens de maintien (222, 232) sur leurs côtés intérieurs et le profilé de support (3) présente des moyens de maintien (31, 32) correspondants, le profilé de support (3) étant monté de manière amovible sur la barre lumineuse (2) par la coopération des moyens de maintien (31, 32) du profilé de support (3) avec les moyens de maintien (222, 232) des ailes latérales (22, 23) de la barre lumineuse (2).
  9. Luminaire (7) selon la revendication 8, dans lequel le moyen de maintien (232) de l'une des deux ailes latérales (23) est en forme de crochet en section transversale et ouvert à l'opposé de la section avant (21) et le moyen de maintien (222) de l'autre des deux ailes latérales (22) est en forme de crochet en section transversale et ouvert vers la section avant (21).
  10. Luminaire (7) selon la revendication 9, dans lequel l'un des moyens de maintien (31, 32) du profilé de support (3) est réalisé sous la forme d'une douille (31) disposée sur un côté transversal du profilé de support (3), de sorte qu'il comprend le moyen de maintien (232) en forme de crochet de l'une des deux ailes latérales (23), et l'autre des moyens de maintien (32) du profilé de support (3) est conçu en forme de crochet en section transversale sur l'autre côté transversal du profilé de support (3), de sorte qu'il vient en prise dans le moyen de maintien (222) en forme de crochet de l'autre des deux ailes latérales (22).
  11. Luminaire (7) selon l'une des revendications précédentes, dans lequel les ailes latérales (22, 23) de la barre lumineuse (2) présentent, en section transversale, respectivement une courbure concave (223, 233) et le profilé de base (1) présente deux saillies (11) correspondantes, la barre lumineuse (2) étant montée de manière amovible sur le profilé de base (1) par la mise en prise des saillies (11) du profilé de base (1) dans les courbures concaves (223, 233) des ailes latérales (22, 23) de la barre lumineuse (2).
  12. Luminaire (7) selon l'une des revendications précédentes, lequel comprend un diffuseur externe (6) qui enferme au moins partiellement la barre lumineuse (2) et le moyen lumineux (4).
EP14175532.2A 2013-07-08 2014-07-03 Éclairage Active EP2824380B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH01227/13A CH708279A1 (de) 2013-07-08 2013-07-08 Leuchte.

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EP2824380A1 EP2824380A1 (fr) 2015-01-14
EP2824380B1 true EP2824380B1 (fr) 2022-06-01

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JP2005019299A (ja) * 2003-06-27 2005-01-20 Matsushita Electric Works Ltd Ｌｅｄ照明器具
DE102011051034A1 (de) * 2011-06-14 2012-12-20 Selux Aktiengesellschaft LED Beleuchtungsanordnung

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EP2824380A1 (fr) 2015-01-14

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