WO2013056985A1 - Luminaire - Google Patents

Luminaire Download PDF

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Publication number
WO2013056985A1
WO2013056985A1 PCT/EP2012/069681 EP2012069681W WO2013056985A1 WO 2013056985 A1 WO2013056985 A1 WO 2013056985A1 EP 2012069681 W EP2012069681 W EP 2012069681W WO 2013056985 A1 WO2013056985 A1 WO 2013056985A1
Authority
WO
WIPO (PCT)
Prior art keywords
reflector
mirror
lamp according
plane
housing
Prior art date
Application number
PCT/EP2012/069681
Other languages
German (de)
English (en)
Inventor
Emrah HEPER
Original Assignee
Heper Moonlight Europe Gmbh
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 Heper Moonlight Europe Gmbh filed Critical Heper Moonlight Europe Gmbh
Publication of WO2013056985A1 publication Critical patent/WO2013056985A1/fr

Links

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
    • F21V7/00—Reflectors for light sources
    • F21V7/0025—Combination of two or more reflectors for a single light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10—Outdoor lighting
    • F21W2131/103—Outdoor lighting of streets or roads

Definitions

  • the invention relates to a light source, in particular for illuminating traffic areas or for other technically demanding tasks, with at least one housing, in which a plurality of light units are arranged, each light unit constructed of an LED bulb and a substantially shell-shaped with a plane of symmetry reflector is, which is formed in a section along the plane of symmetry substantially parabolic and has a light exit surface, wherein the LED is arranged in the region of the light exit surface of this away.
  • LED reflector mirror unit As light source here is a unit of several light sources (LED reflector mirror unit) defined, which are supplied by a single PCB.
  • LEDs light emitting diodes
  • the LED bulb is briefly referred to as LED, comprising single LEDs and multi-LED arrays on PCBs.
  • LED comprising single LEDs and multi-LED arrays on PCBs.
  • the LED arrangement of, for example, four compactly arranged juxtaposed LEDs in the sequence is treated as a single LED.
  • the street in the case of street lighting, the street must be illuminated as evenly as possible, but as little light as possible should be emitted in other directions, since this brings no benefit and impairs the overall efficiency.
  • the height of the suspension of lamps is not arbitrary, so that the lamp itself must have a corresponding light characteristic to meet the specified requirements. It is now desirable to be able to meet even the smallest possible adjustments to the lamp itself different requirements, for example, to enable the regulations and standards appropriate illumination of different widths of roads or different road classes.
  • the beam angle should be as large as possible in the longitudinal direction of a road to be able to represent a large mast spacing, which reduces the cost of lighting accordingly.
  • WO 2011/051542 A discloses a luminaire with a shell-shaped reflector, which is particularly suitable for illuminating traffic areas.
  • the LED is arranged exactly in the boundary plane of the reflector, which is symmetrically doubled in order to achieve a suitable radiation characteristic. This results in two fields of symmetry for the illumination field, which significantly complicates the degrees of freedom in the lighting design.
  • a luminaire for traffic areas must, on the one hand, enable the most wide-angle illumination possible with sufficient luminance, but on the other hand, minimize the glare of road users. This is insufficiently possible with the known lamp.
  • Object of the present invention is to provide a light source with which in a simple and cost-effective way traffic areas, parking lots, sports facilities and other technically demanding surfaces in the interior or exterior are illuminated so that all requirements for the lighting be fulfilled while providing high efficiency and low cost.
  • a plurality of LED reflector-mirror units whose respective reflector is designed as a free-form surface structured in itself and is closed off on one side by a plane mirror and in that the LED in the plane of symmetry between the mirror and a parallel is arranged to the mirror through the apex of the parabola extending plane. Due to the photometric interaction of these elements (a plurality of LED reflector-mirror units) the respectively desired standard-compliant illumination or the necessary exposure level of the surfaces is achieved. According to the lighting tasks are therefore solved in such a way that the number of bulbs is increased and thus with a single reflector symmetry, only by increasing the light level (without increasing the current or power) the required by the standards and the users photometric values are met.
  • An essential aspect of the present invention is that the light of the LED is reflected to a greater extent directly from the reflector to the light exit surface, but initially reflected to another, smaller part of the mirror and only this reflected light is irradiated by the reflector accordingly. This ultimately results in a superimposition of two light fields, which makes the Abstrah characteristk even and allows the lighting designer to mnimieren glare effects.
  • the reflector is designed as a free-form surface structured in itself, that is to say that it can not be described by a simple mathematical surface such as a paraboloid, but is a special surface determined by optimization processes, which does not satisfy a simple equation.
  • TI value increment threshold
  • a mast spacing of 37 m with a mast height of 8 m can be achieved.
  • the mirror is arranged at right angles to the light exit surface.
  • a proportion between 25% and 45% of the emitted light is thrown over the mirror to the reflector. In this way, a special homogenization of the radiation characteristic can be achieved.
  • the mirror is arranged at right angles to the plane of symmetry. Right-angled to this plane of symmetry, d. H. in the plane of the mirror, the emission characteristic can be formed particularly wide-angle.
  • the reflector is formed in a section along the plane of symmetry substantially parabolic, wherein the LED lighting means is arranged in the plane between the mirror and a parallel to the mirror through the apex of the parabola extending plane is located.
  • the reflector is formed at a distance from the housing.
  • the reflector has a lower limit line, which is arranged substantially parallel to the light exit surface and at a distance therefrom. In this way, a convection flow inside the lamp dissipate the heat particularly effective.
  • the reflector has a rib in the region of the plane of symmetry.
  • the intensity maximum in the region of the plane of symmetry can be reduced so that a more uniform emission characteristic is achieved.
  • the reflector has a lower limit line, and in that in the region of the lower boundary line a plurality of projections are provided which extend at an angle to the boundary line and are preferably approximately at right angles thereto. It is particularly advantageous if the projections are arranged in an area remote from the mirror.
  • the housing is formed prismatic and has a longitudinally extending receiving groove for a retaining projection of the reflectors. At the opposite location of the receiving groove can also be a longitudinal holding tion be provided for LED bulbs.
  • the structural design of the luminaire can be further simplified in this context in that a longitudinally extending retaining web for the mirror is formed integrally with the housing.
  • a longitudinally extending retaining strip is provided for the LEDs, which preferably cooperates with a heat dissipation structure. This distributes the heat transferred from the PCB longitudinally and transversely to the housing in order to ensure a large-area radiation.
  • a holder in the mirror for the reflector makes it possible to maintain the optical relations between mirror, reflector and LED as far as possible even in the presence of thermal expansions. As a result, the optical characteristics are robust and not dependent on temperature fluctuations.
  • a particularly simple and inexpensive to produce embodiment of the present invention provides that the reflector is integrally connected to a base plate, which has laterally connecting elements for base plates of other reflectors.
  • a variety of individually manufactured reflectors can thus be combined in a simple manner in a housing to a light source. But it is equally possible to produce several reflectors in one piece, or to use a reflector with multiple cavities for each LED.
  • a radiation area formed in a particularly wide-angled manner in the longitudinal direction of the arrangement (that is to say perpendicularly to the plane of symmetry of the reflectors) can thereby be achieved in that the reflection surface of the reflector is oriented substantially perpendicular to it in the region of the base plate. This means that tangential planes to the reflection surface of the reflector formed as a free-form surface in the area of the edge of the section with the base plate are formed almost vertically. Almost vertical in this context means an angle between 85 ° and 90 °.
  • the housing is designed as a heat radiating surface.
  • the housing may have a web which is thermally coupled to a heat dissipating structure of the PCB, wherein this web absorbs the heat and emits at radiating surfaces.
  • the reflector in a plane parallel to the mirror has a wide radiation range of preferably more than 120 °, particularly preferably about 160 °, which may be up to 170 °, ie that the maximum radiation angle can be up to 85 °. This is indicated in particular in connection with a substantially rectangular emission characteristic.
  • the reflector In a plane perpendicular to the mirror, however, the reflector should have a rather narrow radiation range, which is for example in a range between 30 ° and 90 °, but is more preferably about 50 °. In this way, street lighting can be realized in which the width to be illuminated is relatively low. The length and thus a mast spacing but should be as large as possible.
  • a simple and modular construction which can be realized inexpensively, can be achieved by arranging a plurality of identical reflectors in a housing along an axis in an identical orientation, which axis is formed from the intersection of the plane of the mirrors and the light exit surfaces.
  • An additional advantage achieved by this is that, apart from a minimal parallax, each individual LED illuminates the area to be illuminated in the same way.
  • a reduction of the glare is achieved by the fact that the individual LEDs are naturally offset from each other, ie. that the light for a viewer does not emanate from a single very intense light source, but from a plurality of points of light, each corresponding to a single LED and which taken by themselves have a lower intensity.
  • a particular advantage also results from the fact that, due to this construction, the wide-angle radiation characteristic in the direction of the axis and the narrow radiation characteristic in a direction transverse thereto, which facilitates the construction of corresponding lamps.
  • the present invention relates to a luminaire which contains a plurality of the illuminants described above.
  • a particularly advantageous way of adapting the illumination distribution to different requirements can be achieved by arranging a plurality of identical illumination means next to one another, wherein the light exit surfaces are arranged at acute angles to one another.
  • the LEDs of different light sources do not cover the same area, so that a suitable structuring of the light distribution is possible as required.
  • a further possibility of varying the illumination distribution can be achieved in a particularly preferred manner in that a plurality of identical lighting means are arranged side by side, wherein the light exit surfaces are arranged at acute angles to each other. Due to the special design of the free-form surfaces and the mirror adjoining on one side, the illuminated area of the individual lamps is asymmetrical. By the Different orientation of the bulbs can be achieved as needed equalization or even a broadening of the radiation range. It is thereby also possible in a particularly advantageous manner, both street lighting with central lighting and street lighting with laterally mounted on masts lights with identical bulbs and display with the same housing types and at the same time to meet the applicable lighting standards.
  • the system is modular, ie. that the installed maximum power and the illuminated area can be varied by the number and orientation of the built-in bulbs, so that it is also possible to use the current as a degree of freedom by about the number of bulbs is chosen to be greater than absolutely necessary, but the Amperage is limited to a slightly lower value than the generally permissible maximum value. By such a measure, the efficiency is usually increased, since the bulbs can be operated at lower temperatures due to the lower thermal load.
  • Fig. 1 shows schematically a light source in cross section
  • FIG. 2 is a plan view of a reflector of a reflector
  • Fig. 3 is a lay-line representation of a reflector in a side view
  • FIG. 4 shows a layer line illustration of a reflector in a front view
  • FIG. 5 is an axonometric view of a luminaire with illuminants according to the invention.
  • Fig. 7 is a light distribution curve in a polar representation
  • Fig. 8 is a light distribution curve in Cartesian coordinate representation
  • FIG. 9 is an illustration of a lamp with four housings in asymmetric design.
  • 10 is an illustration of a lamp with six housings in symmetrical design.
  • Fig. 11 is a diagram showing the illumination of a roadway with lights according to the invention.
  • the lamp of Fig. 1 consists of a substantially prismatic housing 1, which is made for example of an extruded aluminum profile.
  • a PCB 3 ie a circuit board, carries a plurality of LEDs, namely high-performance light-emitting diodes, which are shown in FIG. 1 upwards.
  • a reflector 4 is arranged in each case, which is essentially shell-shaped. The reflector 4 is arranged at a distance d 2 from the housing 1, which is at least 5 mm.
  • At least one mirror 5 is fixed, on a holding web 11 which is formed integrally with the housing 1 and which terminates the reflector 4 to the right.
  • a holder 12 is provided for the reflector 4.
  • a separate mirror 5 can be provided for each individual LED 2, or a single longitudinally continuous mirror 5 covers all the reflectors 4.
  • the mirror 5 is made of high-gloss metal, preferably made of aluminum.
  • a heat dissipation structure 7 Integral with the housing 1 is a heat dissipation structure 7, which is a thickening of the cross section and at the same time provides a bearing surface for the PCB 3.
  • a retaining strip 7a fixes the PCB 3.
  • a heat-dissipating structure, not shown here, is provided, for example, in the form corresponding to solid conductor tracks in order to ensure the best possible thermal connection of the LED 2 to the heat dissipation structure 7.
  • a holder 8 is provided on the housing 1, which has a receiving groove 9 which extends in the longitudinal direction and which is adapted to receive a holding projection 10 which is integrally formed on the reflector 4.
  • the reflector 4 has on its underside a base plate 27, whose underside defines a lower boundary line 26 of the reflector 4. This is arranged at a distance di from the light exit surface 6, which is at least 5 mm. Thereby, and by the distance d 2 , the possibility of a thermally induced convection flow is created, which improves the heat dissipation.
  • a single reflector 4 may be provided with a continuous base plate 27 having a plurality of cavities, each associated with an LED 2.
  • a single reflector 4 is shown, is associated with a single LED 2, that is, a plurality of reflectors 4 are arranged side by side, which are interconnected, via a connecting element 27a in the base plate 27, which is formed, for example, swallowtail-shaped.
  • the sectional plane of FIG. 1 is a plane of symmetry, designated 20 below.
  • the reflector 4 has approximately the shape of a parabola, which, however, does not change the fact that the effective inner surface is a free-form surface, that is to say a surface which is not easily representable.
  • the parabola has a vertex S through which passes a virtual plane 25 which is parallel to the plane 21 of the mirror 5. It is from the Fig. 1 that the LED 2 lies approximately centrally between the plane 21 of the mirror 5 and the plane 21 of the mirror 5. This is important to produce the asymmetric radiation pattern in the plane of symmetry 20, which will be discussed below.
  • centered means in particular that the ratio of the distance of the LED 2 to the mirror 5 to the distance of the LED 2 to the plane 21 of the mirror 5 is between 40/60 and 60/40.
  • the reflector 4 is made of plastic, which is metallized on the inside. This allows a highly accurate, yet cost-effective production, which is important because even very small deviations from an ideal shape of the reflector 4 cause large changes in the light distribution.
  • FIG. 2 shows sectional lines h 0 , hi, h 2 , h 3 , h 4 and h 5 corresponding to different planes which are parallel to the light exit surface 6.
  • the lowest intersection line h 0 represents the lower boundary line 26, the remaining intersection lines hi, h 2 , h 3 , h 4 and h 5 are correspondingly higher.
  • the longitudinal axis 28 in FIG. 2 coincides with the plane of symmetry 20.
  • the plane 21 of the mirror 5 is arranged at right angles to the plane of symmetry 20.
  • the projections t 0 , t 1 , t 2 , t 3 and t 4 of the section lines in different transverse planes are also apparent, which are parallel to the plane 21 of the mirror 5.
  • the first section line t 0 represents the limit curve of the reflector, which rests against the mirror 5.
  • the projections l 0 , Ii and l 2 of the cutting lines in different longitudinal planes can be seen, ie. in planes parallel to the plane of symmetry 20, wherein the first section line l 0 is located in the plane of symmetry 20 itself.
  • FIG. 3 the lines of intersection l 0 , Ii and l 2 of the longitudinal planes are shown in detail, in FIG. 4, however, the sectional lines t 0 , t 1 , t 2 , t 3 and t 4 of the transversal sale surrounded. 4 also shows that the cutting lines t 0 , t 1 , t 2 , t 3 and t 4 intersect the lower limit line 26 at a very steep angle, which is nearly 90 °, which is responsible for the fact that the radiation pattern is in planes parallel to the plane 21 of the mirror 5 is very wide-angle.
  • Fig. 3 and Fig. 4 is further from the course of the above section lines h 0 , hi, h 2 , h 3 , h 4 and h 5 , and the cutting lines t 0 , ti, t 2 , t 3 and t 4 a rib
  • This longitudinally extending rib 13 is responsible, inter alia, for a radiation maximum in the region of the plane of symmetry 20 not being too pronounced, so that a sufficiently uniform light distribution can be achieved.
  • the required in the standards high uniformity of illumination and a significantly reduced glare are further by several projections
  • Fig. 5 shows a lamp 16 obliquely from below, which carries a plurality of juxtaposed light bars 17, each corresponding to a light source described above.
  • the lamp 16 is mounted on a mast 16 a.
  • the lightbars 17 are oriented in the direction in which wide-angle illumination is required, such as the longitudinal direction of a lane to be illuminated.
  • FIG. 6 shows the light distribution curve in a gray-curve representation, with bright shades of gray indicating high luminance and dark shades of gray indicating low luminance. Visible is the approximately rectangular light distribution, which is noticeably shifted from the central axis.
  • Fig. 7 shows a polar representation of the light distribution curves in the transverse direction (direction parallel to the plane 21 of the mirror 5) and in the longitudinal direction (direction parallel to the plane of symmetry 20).
  • the light distribution curve in the transverse direction is indicated at 22 and the light distribution curves in the longitudinal direction at 23.
  • the flank 24 of the light distribution curve 22 in the transverse direction indicates the illumination limit, i. the boundary of the area that is lit. It is immediately apparent that this limit is very sharp, which is particularly important for avoiding glare. Again, the asymmetry of the light distribution curve 23 in the longitudinal direction is immediately recognizable.
  • Fig. 8 is an illustration of the light distribution curves analogous to that of FIG. 7 in Cartesian coordinates.
  • the Fig. 9 schematically shows the arrangement of a plurality of, namely, four light bars 17, which are inclined in the same direction in parallel to one another (angle ⁇ of, for example, 10 °), that is to say the light exit surfaces 6 enclose the angle ⁇ to a common plane, which forms the bottom of the lamp not shown here.
  • the planes 21 of the mirrors 5 are accordingly parallel to one another.
  • the light distribution is asymmetrical, as it is also about when a roadway from the side of the roadside set up lights 16 is to be exposed.
  • the parallel arrangement results in the minimum possible illumination range for given light sources.
  • the roadway is wider or if it is necessary, for example, to illuminate a sports field which has corresponding dimensions, then this can be taken into account by not arranging the lightbars 17 parallel to one another but slightly inclined to one another by setting the angle ⁇ for the four lighting bars 17 For example, 6 °, 8 °, 10 ° and 12 °.
  • Fig. 10 schematically shows the arrangement of six oppositely inclined light bars 17a and 17b, respectively.
  • the first three light bars 17a are inclined at an angle ⁇ parallel to one another.
  • the other three lightbars 17b are also inclined at an angle ⁇ parallel to one another, but opposite to the first three lightbars 17a, ie, the first lightbars 17a and the further lightbars 17b are inclined relative to one another at an angle .alpha. d .h. less than 90 °.
  • the first three light bars 17a and the other three light bars 17b also differ in that the mirror 5 is arranged on the opposite side, that is, for example, on the outside. This arrangement thus results in the direction transverse to the light bars 17a, 17b (which is the longitudinal direction of the individual reflectors 4) a symmetrical light distribution. This is ideal for the illumination of a roadway by centrally mounted over the road lights. Again, a widening of the illuminated area by changing the angle with each other can be achieved.
  • Fig. 11 the illumination intensity of a roadway illuminated in accordance with the invention is shown in an axonometric gray scale illustration.
  • the present invention makes it possible to present an LED lighting that meets the highest requirements.

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

Abstract

L'invention concerne un luminaire, destiné notamment à l'éclairage de zones de circulation ou à d'autres applications d'éclairage exigeantes telles que les complexes sportifs, comprenant au moins un boîtier (1) dans lequel sont disposées plusieurs unités d'éclairage constituées chacune d'une LED (2) et d'un réflecteur (4) de forme sensiblement conchoïde avec un plan de symétrie, présentant vu en coupe une forme sensiblement parabolique le long du plan de symétrie (20) et une surface d'émergence de la lumière (6) dans la zone de laquelle la LED (2) est disposée. Une distribution particulièrement uniforme de la lumière peut être obtenue grâce au fait que le réflecteur (4) est réalisé sous la forme d'une surface formée librement et fermé d'un côté par un miroir plan (5) et que la LED (2) est disposée dans le plan de symétrie (20) entre le miroir (5) et un plan (25) parallèle au miroir (5) et passant par le sommet (S) de la parabole.
PCT/EP2012/069681 2011-10-17 2012-10-05 Luminaire WO2013056985A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT15172011A AT512105B1 (de) 2011-10-17 2011-10-17 Leuchtmittel
ATA1517/2011 2011-10-17

Publications (1)

Publication Number Publication Date
WO2013056985A1 true WO2013056985A1 (fr) 2013-04-25

Family

ID=47146341

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/069681 WO2013056985A1 (fr) 2011-10-17 2012-10-05 Luminaire

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AT (1) AT512105B1 (fr)
WO (1) WO2013056985A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002076678A1 (fr) 2000-11-03 2002-10-03 3M Innovative Properties Company Produit abrasif souple et son procede de fabrication et d'utilisation
EP1953449A2 (fr) * 2007-02-01 2008-08-06 Beghelli S.p.A. Système d'éclairage à diodes électroluminescentes, qui peut être monté sur un mur ou sur un plafond
EP2112428A1 (fr) 2008-04-21 2009-10-28 Christian Bartenbach Lampe de tunnel et système d'éclairage de tunnel doté d'une multitude de telles lampes de tunnel
WO2011016236A1 (fr) * 2009-08-07 2011-02-10 東芝ライテック株式会社 Unité de source lumineuse, dispositif de source lumineuse, et dispositif d’éclairage
WO2011051542A1 (fr) 2009-10-30 2011-05-05 Juha Koivisto Dispositif d'éclairage pour produire de la lumière uniforme sur des routes et d'autres zones de grande largeur ainsi que sur des surfaces éclairées de divers articles
EP2360427A2 (fr) 2010-02-12 2011-08-24 Siteco Beleuchtungstechnik GmbH Réflecteur tri-zone
EP2365243A1 (fr) 2010-03-09 2011-09-14 RIDI Leuchten GmbH Lampe

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10116742C2 (de) * 2001-04-04 2003-02-20 Erco Leuchten Reflektorleuchte, insbesondere Boden-, Decken- oder Wandeinbau-Reflektorleuchte
DE102010014210A1 (de) * 2010-01-25 2011-07-28 Siteco Beleuchtungstechnik GmbH, 83301 Linienförmige LED-Leuchte, insbesondere LED-Ringleuchte

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002076678A1 (fr) 2000-11-03 2002-10-03 3M Innovative Properties Company Produit abrasif souple et son procede de fabrication et d'utilisation
EP1953449A2 (fr) * 2007-02-01 2008-08-06 Beghelli S.p.A. Système d'éclairage à diodes électroluminescentes, qui peut être monté sur un mur ou sur un plafond
EP2112428A1 (fr) 2008-04-21 2009-10-28 Christian Bartenbach Lampe de tunnel et système d'éclairage de tunnel doté d'une multitude de telles lampes de tunnel
WO2011016236A1 (fr) * 2009-08-07 2011-02-10 東芝ライテック株式会社 Unité de source lumineuse, dispositif de source lumineuse, et dispositif d’éclairage
WO2011051542A1 (fr) 2009-10-30 2011-05-05 Juha Koivisto Dispositif d'éclairage pour produire de la lumière uniforme sur des routes et d'autres zones de grande largeur ainsi que sur des surfaces éclairées de divers articles
EP2360427A2 (fr) 2010-02-12 2011-08-24 Siteco Beleuchtungstechnik GmbH Réflecteur tri-zone
EP2365243A1 (fr) 2010-03-09 2011-09-14 RIDI Leuchten GmbH Lampe

Also Published As

Publication number Publication date
AT512105A1 (de) 2013-05-15
AT512105B1 (de) 2013-08-15

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