EP2880361B1 - Dispositif d'éclairage - Google Patents

Dispositif d'éclairage Download PDF

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Publication number
EP2880361B1
EP2880361B1 EP13750264.7A EP13750264A EP2880361B1 EP 2880361 B1 EP2880361 B1 EP 2880361B1 EP 13750264 A EP13750264 A EP 13750264A EP 2880361 B1 EP2880361 B1 EP 2880361B1
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EP
European Patent Office
Prior art keywords
reflector
illuminated
shell
surface portion
section
Prior art date
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Active
Application number
EP13750264.7A
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German (de)
English (en)
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EP2880361A1 (fr
Inventor
Christian Bartenbach
Wilfried Pohl
Christian Reisecker
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.)
Bartenbach Holding GmbH
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Bartenbach Holding GmbH
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Priority to DK17161523.0T priority Critical patent/DK3199869T3/da
Priority to EP17161523.0A priority patent/EP3199869B1/fr
Publication of EP2880361A1 publication Critical patent/EP2880361A1/fr
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Publication of EP2880361B1 publication Critical patent/EP2880361B1/fr
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    • 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
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures
    • 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
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • 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
    • F21V7/04—Optical design
    • F21V7/048—Optical design with facets structure
    • 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 a facade / wall / floor and / or ceiling lighting device having at least one row of radiators each having a point light source preferably in the form of an LED and are arranged side by side of the facade / wall / ceiling / floor surface, and a radiator for such a lighting device.
  • facade spotlights which use an LED as the light source.
  • a plurality of such LEDs in the form of a light band can be arranged side by side to illuminate the facade over its entire width or at least a piece thereof.
  • Such light bands are arranged regularly spaced at the upper end of the facade or at the upper end of a facade piece to be illuminated a distance from the facade, so that they obliquely down towards the ground directed illuminate the facade of the building.
  • the facades to be illuminated may hereby be exterior facades or interior facades, for example of interior or light courtyards, but also walls of interiors, halls, courtyards or the like, or even ceilings and floors, which may be flooded, for example, by radiators mounted close to the ground on a wall, or generally at least approximately flat surfaces can be illuminated in a corresponding manner.
  • Such facade spotlight assemblies with LEDs are light and elegant. Since they can be made small-sized, they hardly disturb the facade or wall or ceiling picture.
  • interesting optical effects can be achieved by the large number of emitters, for example, differently colored LEDs can illuminate different sections of the facade differently. Likewise, it is possible in a simple manner to vary the illumination color in time. In addition, LEDs are easy to maintain and energy efficient.
  • facade spotlight arrangements with punctiform light sources can be improved with regard to the uniformity of the facade illumination and the freedom from glare, the challenge being in particular to achieve this with spotlights arranged very close to the facade, which illuminate comparatively large facade pieces.
  • the ratio of the height of the facade or wall piece to be illuminated to the facade spacing of the radiators should often be 4: 1 or more, often even 10: 1 or more, with ratios typically to be achieved ranging from 5: 1 to 15: 1, which represents a major challenge in terms of uniformity mentioned at the same time glare-free.
  • the US 2007/0171631 shows a wallwasher, in which the emitters is associated with a reflector, with the help of which the light is to be made uniform. Furthermore, the shows DE 20 2005 011 747 a wall washer with LEDs as light sources, a good color mixing of the different light colors of the LEDs to be achieved by means of a diffuser element. By means of a reflector, the light of the LEDs is reflected on a side wall, before the light rays hit the diffuser element, which is formed as a sandblasted glass plate.
  • the light emitted by light sources of the radiator light is transformed by means of free-form lenses in a square, pyramid-shaped beam to illuminate angular facade surface pieces.
  • the font shows EP 22 16 588 A1 a radiator with a bell-shaped reflector, which is composed of a plurality of reflector segments.
  • the document shows US 2004/0114366 A1 an LED spotlight, which is associated with a reflector, which includes three reflector areas.
  • the inner located below the LED reflector area throws the reflected light on an edge region of the reflector, from which the light then passes through re-deflection is radiated.
  • the present invention seeks to provide an improved facade / wall / floor lighting device of the type mentioned and an improved radiator for this, avoid the disadvantages of the prior art and further develop the latter in an advantageous manner.
  • the light source associated optics instead of a rotationally symmetric or orange-section light cone of the light intensity distribution of the punctiform light source to give a particular oblique, pyramid-like asymmetry to illuminate a preferably rectangular facade piece as evenly as possible on the facade.
  • the plurality of light sources can complement one another much better, since geometrically regular, in particular rectangular, illuminated façade pieces can be placed against each other or uniformly superimposed on the façade.
  • the facade radiators can be aligned substantially parallel to each other, i. it is not necessary to achieve the desired uniformity by tilting the radiator axes.
  • the radiators each have an approximately half-shell-shaped reflector which essentially completely captures the light from the associated light source and projects it onto an approximately rectangular surface piece, the reflectors being composed of at least two shell halves, of which shell halves each captures the respective captured light on the shell distributed throughout the reflector illuminated area piece. Due to the double- or multi-shell curvature of the reflectors, the illuminated area piece is, so to speak, twice or more irradiated by each reflector, whereby a high degree of uniformity of the illumination of the entire surface area illuminated by a reflector without light-dark edges is achieved.
  • the light source does not cast a shadow, but the light is thrown around the light source substantially completely on the facade or wall, ceiling or floor surface, whereby a high lighting efficiency with efficiencies of preferably more than 80%, in particular even more than 90% can be achieved.
  • a very compact, in particular flat construction arrangement of the reflectors can be achieved, which ensures a light, less disturbing appearance and space-saving installation under or in cornices or adjacent ceiling or wall sections.
  • the contouring of the overall half-shell or shell-shaped reflectors or their curvature halves can in this case in an advantageous embodiment of the invention in particular be such that the beam path through the deflection at the reflector surface undergoes a reflection and converges or irradiated by the light source reflector portion, which - when viewed through the light source perpendicular to the facade piece to be illuminated - offset to one side of the light source which throws captured light onto a patch lying on the opposite side of the light source.
  • each of the shell halves of a reflector is formed double convergent working, so that the outgoing from a shell half beam path - approximately, roughly speaking - a particular oblique double pyramid or, depending on the peripheral contour of the surface to be illuminated, a particular oblique double cone or a double in a similar manner forms convergent radiation body.
  • a doubly convergent design of the reflector shell sections makes it possible to capture the light emitted by the light source, in particular a half-space, essentially completely with only one overall half-shell-shaped reflector and to radiate substantially completely past the light source onto a predetermined areal piece.
  • the light can thereby be blasted past the plurality of shell halves on different sides of the light source, so that the light source sits in an at least approximately recessed area of the reflected beam path and does not generate losses due to shadowing.
  • a high efficiency can be achieved, since the light emitted from the light source light beams must be reflected only once and insofar only reflection losses occur.
  • the spotlight is almost unlimited in terms of its positioning, since the light source can sit more or less directly between the reflector and the surface to be illuminated.
  • the different shell halves of a reflector need not form "halves" in the sense of each 50% of the total reflector surface, but may deviate from this deviating surface parts, for example, smaller and larger surface parts of the overall approximately half-shell-shaped reflector, which may also be provided more than two shell halves , which together form an approximately half-shell-shaped Reflector of a radiator form.
  • This deviating surface parts for example, smaller and larger surface parts of the overall approximately half-shell-shaped reflector, which may also be provided more than two shell halves , which together form an approximately half-shell-shaped Reflector of a radiator form.
  • the shell halves or parts of a reflector are in each case contoured such that a lower shell half edge section illuminates an upper edge section of the illuminated facade section and / or an upper shell half edge section illuminates a lower edge section of the illuminated facade section.
  • an increased installation position of the facade spotlights can be achieved substantially completely above the facade / wall piece to be illuminated, so that the facade spotlights do not affect the view of the illuminated facade piece.
  • a recessed installation of the facade spotlights for example, in a lying above the facade piece to be illuminated cornice or an overlying ceiling and yet the facade or wall up to the cornice or the Ceiling to be illuminated.
  • a corresponding reflection or convergence in the horizontal direction can also be provided in the vertical direction and the reflector or each of its shell halves can be contoured such that a right shell edge section illuminates a left edge section of the illuminated facade section and / or a left shell edge section illuminated a right edge portion of the illuminated facade piece.
  • a mounting situation can be realized with up to the edge region of the surface piece to be illuminated emitters.
  • the reflector can advantageously be designed in such a way that the beam cone emitted by the plurality of shell halves or pyramids or lobes at least approximately in a common plane, in particular at least approximately in the region of the opening cross-section of the reflector, each have a beam path constriction or their focus point (in the sense of successive conical tips of a double cone).
  • all or some of the reflectors may each be approximately double-pear-shaped or twin-shell-shaped with a convexly curved or pointed tapering transition ridge between the two shell halves on the reflector surface.
  • the reflector surface and / or each of its shell-shaped halves can be designed in particular as a free-form surface.
  • the two shell halves of a respective reflector together may form an approximately double-pear-shaped half-shell, which has a substantially gap-shaped constriction formed by the transition region of the two shell halves.
  • the reflectors may each be integrally formed and the shell halves integrally connected to each other. Depending on the light distribution or deflection to be achieved, said constriction may extend in different directions or planes of the reflector shell.
  • said gap-shaped constriction between the shell halves in a longitudinal center plane of the respective reflector, so that the two shell halves bulge away to the right and left of the said constriction.
  • Said constriction forms the connection area or the connection between the two shell halves.
  • the shell halves can be formed approximately the same size, but can also be designed differently large, for example, if the aforementioned constriction does not run centrally over the reflector body.
  • the half-shell term does not have to be understood in the sense of 50% half of the surface, but may also denote differently sized surface or carcase pieces or shell sections, it also being possible for more than two shell halves to be provided.
  • said constriction may extend in a plane which is on the one hand perpendicular to the surface piece to be illuminated and on the other hand perpendicular to the longitudinal direction, along which the emitters are lined up. If the radiators are lined up, in particular, approximately horizontally along an upper edge section of a façade piece to be illuminated, the reflectors can be contoured in such a way that said constriction extends in a vertical plane. If the facade radiators along one side of the facade piece to be illuminated in particular strung approximately vertically, said constriction may extend in a horizontal plane.
  • the reflectors are each contoured such that the captured by the associated light source light is not transformed into a circular or round cone of light, but in a preferably oblique pyramid of light, ie the outgoing beam from the reflector has in its entirety a polygonal, preferably approximately rectangular cross-section, so that the illuminated patch is also more or rectangular.
  • each of the two aforementioned shell halves, of which a total of half-shell-shaped reflector is composed be such that each shell half itself transforms the light captured by the associated light source into such a pyramidal light beam, wherein the two pyramids emerging from the shell halves overlap in such a way that a polygonal, in particular rectangular patch is illuminated on the façade or surface to be illuminated.
  • the reflector / light source arrangement can be arranged that the respective light source emits the light emitted by it substantially completely into a half-space which is at least largely remote from the surface piece to be illuminated and is arranged such that the half space faces the reflector , wherein the half-shell-shaped bwz. shell-shaped reflector surrounds the light source so far that said half-space is covered by the reflector.
  • An axis of symmetry of said half-space can be aligned at right angles to the facade or wall, but this also slightly tilted, for example, at an angle of about 90 ° ⁇ 30 °, be, so that the half-space still predominantly facing away from the facade or wall is.
  • the reflectors are each contoured such that the reflectors substantially completely direct the captured light around the associated light source and cast it onto the patch to be illuminated.
  • the reflectors can in this case be designed such that the light is deflected only once at the reflector surface.
  • the reflector can easily work deflecting, so that stray losses are avoided by multiple deflection.
  • the light sources can each be arranged in the region of the opening cross-section of the respective associated reflector within the space region enclosed by the reflector edge.
  • the reflector edge can define at least approximately one plane, wherein the light source associated with the reflector can advantageously be arranged in this plane or can be positioned only relatively slightly below or above this plane.
  • the light source can be arranged in the region of the longitudinal center plane of the reflector, but not exactly centered, but offset to one side of the reflector shell.
  • the light source can be offset from the constriction of the reflector offset from the reflector center out to the side at which the constriction has a smaller depth.
  • Said constriction may extend over the reflector cup and thereby have a depth or height which decreases from one side of the reflector towards the opposite side of the reflector.
  • the two shell halves merge more harmoniously into one another and are less strongly separated from one another or have a less pronounced or less pronounced transition.
  • the light source is offset to the side in which said constriction is less pronounced.
  • a faceting of the shell-shaped reflector surfaces can be provided in a further development of the invention.
  • Such surface structuring with a multiplicity of facets can be provided only for one of the half-shell or quarter-shell-shaped reflector surfaces or generally only for part of the reflector, for example such that one reflector quarter shell is faceted and the other reflector quarter shell is smooth, thereby already providing a certain amount Homogeneity can be achieved because both reflector quarter shells irradiate the same area substantially completely.
  • both reflector quarter shells or the entire reflector surface can be structured with such a multiplicity of facets.
  • both halves of the reflector shell substantially completely illuminate or illuminate the common surface piece can be achieved with such a faceting a beautiful homogenization of the illuminated area.
  • the said facets are advantageously designed to be small relative to the reflector surface, wherein preferably more than one hundred, in particular more than two hundred facets may be distributed over the reflector surface, possibly also in the form of a microfacetted surface structure.
  • the faceting can advantageously be distributed in the form of a matrix or distributed in a cloud-shaped manner, ie. H.
  • the facets do not all have to be the same size and can be arranged differently according to a cloud distribution, but overall cover the reflector surface uniformly.
  • the facets can be formed in several rows and columns both in the longitudinal direction and in the transverse direction-in relation to the previously explained division of the reflector surface, for example, such that more than ten, in particular more than twenty rows and in the longitudinal direction and in the transverse direction Columns of such facets are provided.
  • the shape of the faceting can also vary, advantageously polygonal, in particular rectangular and approximately square facets or generally regularly geometrically shaped facet pieces whose extent in the longitudinal and transverse directions is about the same size can be provided.
  • irregularly shaped surface structure shaped surface pieces may also be formed in the reflector surface, for example in the form of an orange peel structure, as obtainable, for example, by etching the surface or a satin matt surface structure, as for example by sandblasting the surface is available.
  • a microfacetted surface also improves the light mixing and the light source / reflector system insensitive to position and shape tolerances while improving the uniformity of the illumination are made.
  • the reflectors are shaped in such a way that the radiators have a longitudinal blanking or a luminous blank parallel blanking, i. in the direction parallel to the facade or illuminated surface, the light intensity is more or less zero.
  • the blanking is in particular such that in a plane parallel to the facade, which goes through the facade spotlight row or has the same distance from the facade as the facade spotlights, the light intensity in a ground-level area approaches zero.
  • the blanking on the individual radiators can be designed differently.
  • the facade spotlights viewed in a vertical plane perpendicular to the facade can have a Ausblend Scheme of more than 270 °, preferably about 270 ° to 280 °, wherein the non-hidden area at the upper end of the illuminated facade piece about directed at the facade at an angle of 90 °, while at the lower end of the illuminated facade piece of the non-hidden area with the facade an angle of preferably 3 ° to 10 ° can include.
  • the facet radiator can have a masking range of at least 200 °, preferably 240 ° or more, in particular about 240 ° to 270 °, which may depend on the LED spacing and the desired lighting effects such as color blends.
  • the facade spotlights can be arranged in an approximately horizontal row at the upper end of the facade piece to be illuminated, the facade spotlights of the facade can be arranged at a distance of about 0.5 to 2 m.
  • a facade spotlight row can advantageously be arranged at a distance of about 1 m in front of the facade and illuminate the facade to the ground, ie about 15 m high.
  • said aspect ratio can not be determined by the height of the wall piece to be illuminated, but, for example, its width, namely, for example, when a wall of, for example, a long corridor is to be illuminated with laterally arranged radiators.
  • said ratio is determined by the extent of the illuminated patch in a direction perpendicular to the direction along which the plurality of emitters are usually strung, and the emitter spacing perpendicular to the surface to be illuminated.
  • the facade radiators or their reflectors which are arranged closer to the edge of a façade surface, are advantageously designed with regard to their emission angles or skimming spaces in such a way as to prevent them from being emitted beyond the lateral end of the facade.
  • they are to the edge of the facade arranged façade spotlights or their reflectors designed such that each of them lit facade piece laterally terminates approximately flush with the vertical facade edge.
  • the illuminated space produced by the facade radiator strip ie the entirety of the facade radiators, terminates flush with the right and left edge of the façade, or possibly even before, so that in each case it is ensured that no glare occurs on the adjoining building façade.
  • the façade spotlights do not radiate beyond the edges of their associated façade surface.
  • the half-shell-shaped reflectors are contoured in an advantageous embodiment of the invention in particular such that each facade spotlights illuminates an approximately rectangular piece of facade and then generates an illuminance distribution along vertical lines over the entire façade height or Viewed total height of the illuminated facade or surface piece considered illuminance ratio of minimum illuminance E min to maximum illuminance E max of 1:10, ie, has 0.1 or greater.
  • the illuminated façade piece does not have to go all the way to the floor, but can end a bit above or a certain transition area to the ground can be provided to avoid bright radiation edges on the floor - or an adjacent wall - which otherwise due to Assembly tolerances, but also the "radiation brush", which would be caused by the real extent of the mathematically not really punctiform light source at not arbitrarily positionable by the reflector light source, would occur.
  • said illuminance ratio even with very close to the wall mounted radiators with the above ratios of radiator wall distance to extension, in particular height of the illuminated area piece of 1: 4 to 1:20 , in particular 1: 5 to 1:15 can be provided.
  • the reflectors of the facade heaters are advantageously asymmetrically formed in development of the invention that the illuminance distribution of a respective facade spotlight individually considered on the illuminated facade of this piece about strichovalförmige or slightly pear-shaped Isoluxen has, i. Lines along which the illuminance is the same.
  • the course of these Isoluxen clearly determines the free-form surface of the reflector, which is associated with the light source.
  • a specific Isoluxensent is generated, which characterizes the illumination intensity distribution on the illuminated facade piece, so that from the course of Isoluxen the reflector surface shape is uniquely determined in terms of their geometry.
  • the mentioned isoluxes can be fundamentally differently contoured.
  • said oval or semi-oval isoluxes of the façade piece illuminated by a facade spotlight have a ratio of height to width of at least 2: 1, wherein said ratio is advantageously also 3 : 1 or 4: 1 can be. Due to the generally elongated, slim design of the Isoluxen over the height of the facade at least approximately constant illuminance can be achieved.
  • the light sources can each be mounted on a support arm which protrudes from an edge of the respective reflector over its opening cross-section, wherein the light sources are respectively arranged on the reflector side facing the respective support arm.
  • Said support arm can be contoured oblong slim to block as little as possible surface for the throwing back of the light rays, for example, have the shape of a longitudinal ridge.
  • each facade spotlight can be assigned its own printed circuit board, although all or some of the facade spotlights also have a common printed circuit board along which the light sources are lined up to form a common band of light.
  • the facade lighting device 1 shown in the figures comprises, in front of each facade 2, 3 of the building 4, a light band 5 which is arranged substantially horizontally approximately parallel to the façade, approximately at the upper end of the respective façade 2 and 3 Facade is wide or slightly shorter.
  • Each light band 5 comprises a plurality of facade radiators 6, each comprising a point-shaped light source in the form of an LED 7 and a LED 7 associated reflector 8, as this Fig. 7 shows.
  • the LEDs 7 can in this case be arranged on a light source carrier 9, which can be advantageously designed as an LED board, and pivotally mounted about a horizontal axis, so that the radiation angle of the respective facade radiator 6 with respect to the facade 2 and 3 can be adjusted.
  • the reflector 8 may be pivotally mounted together with the LED 7.
  • the light source together with the optics in the form of the reflector 8 can advantageously be arranged in an approximately tubular housing 10, which has a slot-shaped emission opening, which can be closed with a cover glass in order to avoid contamination of the optics.
  • the housing 10 may also have other cross sections, for example, round tube cross sections.
  • the housing 10 can also act as a panel and in the plane of constrictions 50 of the reflected Lichtpyramiden hole or slot-shaped light passage openings 51 have, but otherwise be formed closed.
  • Fig. 7 shows the light source or LED 7 may be attached to a support arm 9a, which forms part of the aforementioned light source carrier board 9 and extending from the edge of the associated reflector 8 and protrudes into the opening cross section 8q of the reflector 8. Accordingly, the LED 7 disposed on said support arm 9a is approximately disposed in the plane defined by the edges of the reflector 8, the LED 7 being within the space enclosed by said reflector edge.
  • Said light source carrier board 9 advantageously comprises a reflector recess 9b, which is adapted to the peripheral contour of the reflector 8, so that the reflector 8 is encompassed by said recess.
  • the reflector 8 may also be mounted or fastened to the light source carrier board 9, in particular such that at least part of the reflector rim is seated on the light source carrier board 9 or extends directly over or on the carrier board 9, wherein optionally fastening means may be provided, for example in the form of the illustrated retaining pins.
  • the light band 5 is arranged at a facade height of 15 m at a distance of about 1 m in front of the facade.
  • the distance between the LEDs 7 in the light band 5 from each other can be chosen fundamentally different, advantageously a more or less seamless stringing as many LEDs is provided as this high brightness can be achieved on the facade with LEDs of low strength.
  • the LEDs or emitters each individually radiate no rotationally symmetric beam of light. Rather, it is due to the contouring the reflectors 8 of each LED 7 illuminates an approximately rectangular facade piece 12.
  • the reflectors 8 can each be designed such that in each case an approximately rectangular, for example, about 15 m high and 3 m wide facade piece 12 of a single LED 7 according to Fig. 4 is illuminated.
  • each of the reflectors 8 comprises a roughly spherical bowl-shaped reflector body having an approximately - roughly speaking - round or rounded edge contour from which the Reflector body dished bowl-shaped to one side, so that said edge contour defines the opening cross-section of the shell.
  • the shell-shaped reflector body is constituted by two shell halves 8a and 8b which are connected to each other and have between them a transition area in the form of a constriction 8c connecting the two shell halves 8a and 8b.
  • the reflector 8 provides a total view of a double-pear-shaped or twin-jaw-shaped contouring, cf.
  • Figures 9 and 10
  • Said constriction 8c forms - when viewing the reflector surface forming shell inside - a ridge-shaped increase, which extends along the central longitudinal plane of the reflector 8.
  • the depth or height of the constriction 8c from one side of the reflector 9 to an opposite side slightly increases, in particular to the side that points in the installation situation to the surface to be illuminated, ie at above a facade to be illuminated arranged facade radiators lies down or forms the lower edge portion 8u of the reflector 8.
  • the shell halves 8a and 8b of the overall half-shell forming reflector 8 may be contoured such that the light captured by each shell half 8a and 8b is incident on the entire surface illuminated by the reflector 8, ie the patch 12 as shown in FIG Fig. 5 can be rectangular, is distributed.
  • the beam paths of the two shell halves 8a and 8b are thus substantially completely superimposed, so that no light-dark lines or edges on the surface piece 12 to be illuminated occur.
  • the reflector 8 is contoured as a whole in such a way that the reflector rotates the beam path so to speak a mirror image.
  • each of the shell halves 8a and 8b is designed to work in a double convergent manner.
  • the beams deflected by an upper shell half rim 8o are directed to a lower edge area of the facade piece 12 to be illuminated, while those deflected by a lower shell half edge 8u Rays illuminate the upper edge region of the illuminated facade piece 12.
  • each shell half 8a and 8b illuminates a left edge portion of the facade piece 12, while the left shell edge 8l irradiates a right edge portion of the facade piece 12, see FIG. Figs. 11 (a) and 11 (b) ,
  • the shell halves are each contoured so that a one-to-one assignment takes place, i. each point of the illuminated area 12 is illuminated by exactly one point of the shell half.
  • Fig. 8 shows.
  • the generated beam is substantially completely below - or in lateral installation substantially completely laterally or at bottom mounting substantially completely discharged above the reflector 8, so that the reflector 8 and the entire facade spotlight 6 also under plaster or in an adjoining ceiling or adjoining cornice can be installed recessed.
  • the illuminated by the respective facade spotlight 6 facade piece 12 thus remains free from occlusion by the facade spotlights itself, resulting in no obtrusive visual barriers on the illuminated wall or facade piece for the viewer.
  • the reflector surfaces of the reflectors 8 can be highly reflective, advantageously have a reflectance of more than 80%, in particular more than 90%.
  • the reflector surfaces may be slightly frosted to make the reflector less sensitive to manufacturing tolerances or to achieve the desired uniformity of illumination of the patch even with larger shape tolerances of the reflector.
  • the reflectors 8 may comprise filters and / or mirror layers, for example in order to filter the captured light with regard to specific wavelength ranges, for example in order to filter out melatonin light.
  • the reflectors 8 may be provided with a surface structuring in the form of a faceting 80 comprising a plurality of facets 81 which may be distributed in a regular pattern over the entire reflector surface and substantially contiguous with each other so that substantially all of the facets will be present effective reflector surface is faceted.
  • the facets 81 can be distributed in a plurality of rows and columns, both in the longitudinal direction and in the transverse direction of the reflector 8, for example in more than ten columns and ten rows per quarter shell.
  • the facets 81 can be contoured differently, for example, approximately provided with rectangular circumferential constructions.
  • the facet surface of a facet 81 itself can also be contoured differently, for example essentially flat or even slightly concave, for example in the sense of a shallow depression in the manner of the impression of a lens.
  • Fig. 5 shows, the illuminated by an LED 7 and the associated reflectors 8 rectangular facade pieces 12 are superimposed, ie along a vertical strip overlap illuminated by one LED facade pieces.
  • the illuminated facade pieces 12 overlap each other in a strip, since the width of the illuminated facade pieces 12 is greater than the distance a.
  • the said overlap strip can be quite narrow, but also correspond to the entire facade piece 12, ie each radiator 6 can illuminate the entire facade piece 12.
  • Fig. 3 shows, the illuminance of the light band 5 over the entire facade height only a very small variation.
  • the minimum illuminance according to Fig. 3 occurs at the lower end of the facade, stands to the maximum illuminance E max , in the range of about one-quarter to three-quarters of the facade height, in the drawn version according to Fig. 3 occurs at about three quarters of the facade height, in a ratio of 1:10 or more, ie preferably 1: 5 or 1: 2.5 or even larger.
  • Fig. 1 shows, it has the Abstrahlraum the light band 5 lateral demolition edges, which are advantageously approximately flush with the edges of the facade, so that glare around the corner of the building 4 around is excluded.
  • FIG. 12 shows advantageous distributions of illuminance.
  • Fig. 12 the course of the illuminance above the façade height is shown.
  • the facade height "0" which corresponds to the height of the light band 5
  • a relative illuminance of about 60% which then rises up to about 6 m below the light band 5 out to about 100%, ie there reaches its maximum value
  • the lux number then drops again, with 10% of the maximum lux strength remaining on the floor.
  • the ratio of minimum illuminance E min to maximum illuminance E max is defined as 1:10.
  • the reflector 8 of a single facade radiator or a single LED 7 can be defined by an illuminance distribution in a further development of the invention, as they Fig. 13 shows.
  • the named Fig. 13 shows the isoluxes, ie the lines along which the illuminance in the facade piece 12 illuminated by an LED is the same. It is on the vertical axis of the Fig. 13 the height of the facade, more precisely the height under the respective LED applied, while the horizontal axis indicates the width of the illuminated facade piece.
  • the Isoluxen thereby have a total of approximately schovalförmige contouring or flattened on one end oval shape.
  • the LED point 7 directly opposite façade point is, so to speak, the center of said Isoluxen.
  • the isoluxes extend approximately oval-shaped or semi-oval or in the form of a one-sided, flattened on one end oval, with the highest illuminance indicating Isoluxe is in the center and is surrounded onion-shaped Isoluxen that indicate ever lower illuminance.
  • the ratio of the longitudinal extent of the isoluxes in the vertical direction to the width of the isoluxes is more than 2: 1, ie the isoluxes are overall quite long and slender, cf.
  • FIG. 13
  • the reflector 8 of one or more, possibly all emitters can be provided with a spectrum which changes the spectrum of the reflected light, so that the reflected light has a different spectrum than the light captured by the refractor and coming from the light source , As a result, for example, melatonin-promoting or suppressing light can be generated.
  • a spectral-changing coating is particularly advantageous in connection with the only simple reflection of the entire captured or total light emitted from the light source at the reflector, so that the desired spectrum change is not falsified or not uncontrollable by multiple reflections.

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

Claims (14)

  1. Projecteur destiné à un dispositif d'éclairage (1) pour l'éclairage d'une portion de surface d'une façade, d'un mur, d'un plafond ou d'une surface de sol, comprenant une source lumineuse (7) ponctuelle, de préférence sous la forme d'une LED, ainsi qu'un réflecteur (8) associé à la source lumineuse (7), qui capte sensiblement en totalité la lumière de la source lumineuse (7) associée et la projette sur la portion de surface (12) en particulier approximativement rectangulaire, le réflecteur (8) étant réalisé à réflexion unique et la totalité de la lumière émise par la source lumineuse (7) et captée étant réfléchie uniquement une fois, caractérisé en ce que le réflecteur (8) est formé par au moins deux demi-coques (8a, 8b), lesdites demi-coques (8a, 8b) étant chacune réalisées à réflexion doublement convergente et distribuant la lumière respectivement captée avec une réflexion unique sur toute la portion de surface éclairée par le réflecteur (8), une partie de bord de coque gauche (8l) de la demi-coque (8a ; 8b) éclairant une partie de bord droite (12r) de la portion de surface (12) éclairée, une partie de bord de coque droite (8r) de ladite demi-coque éclairant une partie de bord gauche (12l) de la portion de surface (12) éclairée, une partie de bord de coque inférieure (8u) de ladite demi-coque éclairant une partie de bord supérieure (12o) de la portion de surface (12) éclairée et une partie de bord de coque supérieure (8o) éclairant une partie de bord inférieure (12u) de la portion de surface (12) éclairée.
  2. Projecteur selon la revendication précédente, dans lequel le réflecteur (8) présente des contours tels que le faisceau lumineux venant de la source lumineuse (7) est transformé en un faisceau lumineux approximativement pyramidal, chaque demi-coque (8a, 8b) présentant de préférence des contours tels que la lumière de la source lumineuse (7) captée par la demi-coque (8a ; 8b) respective est transformée en un faisceau lumineux approximativement pyramidal, en particulier en forme de pyramide oblique.
  3. Projecteur selon l'une des revendications précédentes, dans lequel la source lumineuse (7) diffuse la lumière émise par celle-ci sensiblement en totalité dans un demi-espace tourné dans la direction opposée à la portion de surface à éclairer et est disposée de telle manière que le demi-espace est tourné vers le réflecteur (8), le réflecteur (8) en forme de demi-coque entourant la source lumineuse (7) dans une telle mesure que ledit demi-espace est masqué par le réflecteur (8).
  4. Projecteur selon l'une des revendications précédentes, dans lequel le réflecteur (8) est pourvu d'un revêtement modifiant le spectre de la lumière.
  5. Projecteur selon l'une des revendications précédentes, dans lequel le réflecteur (8) présente des contours tels que les faisceaux lumineux diffusés par les plusieurs demi-coques (8a, 8b) possèdent des rétrécissements de chemin optique (50) se trouvant au moins approximativement dans un plan commun, en particulier au moins approximativement dans la zone de la section d'ouverture du réflecteur (8), et un écran placé devant le réflecteur (8) est prévu, qui possède dans la zone des rétrécissements de chemin optique des évidements, en particulier des orifices de passage de lumière (51) en forme de fente ou de trou, ledit écran étant formé en particulier par un boîtier (10) de préférence tubulaire, fermé à l'exception desdits évidements.
  6. Dispositif d'éclairage comprenant au moins une rangée de projecteurs (6), qui sont réalisés respectivement selon l'une des revendications 1 à 5, et qui sont disposés les uns à côté des autres espacés de la portion de surface (2, 3) à éclairer.
  7. Dispositif d'éclairage selon la revendication précédente, dans lequel les réflecteurs (8) présentent respectivement des contours tels qu'une partie de bord de réflecteur inférieure (8u) éclaire une partie de bord supérieure (12o) de la portion de façade (12) éclairée et une partie de bord de réflecteur supérieure (8o) éclaire une partie de bord inférieure (12u) de la portion de surface (12) éclairée, et/ou une partie de bord de réflecteur gauche (8l) éclaire une partie de bord droite (12r) de la portion de façade (12) éclairée et une partie de bord de réflecteur droite (8r) éclaire une partie de bord gauche (12l) de la portion de surface (12) éclairée.
  8. Dispositif d'éclairage selon l'une des revendications précédentes 6-7, dans lequel les sources lumineuses (7) diffusent la lumière émise par celles-ci respectivement sensiblement en totalité dans un demi-espace tourné principalement dans la direction opposée à la portion de surface (12) à éclairer et sont disposées de telle manière que le demi-espace est tourné vers le réflecteur (8), et les réflecteurs (8) guident respectivement la lumière captée de la source lumineuse (7) associée sensiblement en totalité au-delà de la source lumineuse (7) sur la portion de surface (12) éclairée, chaque demi-coque (8a, 8b) d'un réflecteur (8) approximativement en forme de demi-coque, qui capte sensiblement en totalité la lumière de la source lumineuse (7) associée et la projette sur une portion de surface (12) prédéfinie, étant réalisée à réflexion doublement convergente, de telle manière que toute la lumière captée est diffusée sensiblement en totalité sur différents côtés de la source lumineuse (7) au-delà de la source lumineuse, une partie de bord de coque gauche (8l) de la demi-coque (8a ; 8b) éclairant une partie de bord droite (12r) de la portion de surface (12) éclairée, une partie de bord de coque droite (8r) de ladite demi-coque éclairant une partie de bord gauche (12l) de la portion de surface (12) éclairée, une partie de bord de coque inférieure (8u) de ladite demi-coque éclairant une partie de bord supérieure (12o) de la portion de surface (12) éclairée et une partie de bord de coque supérieure (8o) éclairant une partie de bord inférieure (12u) de la portion de surface (12) éclairée.
  9. Dispositif d'éclairage selon l'une des revendications précédentes 6 à 8, dans lequel les demi-coques (8a, 8b) d'un réflecteur (8) respectif forment ensemble une demi-coque approximativement en forme de double poire, qui possède un rétrécissement (8c) approximativement en forme de fente formé par la zone de transition entre les deux demi-coques (8a, 8b), le rétrécissement (8c) s'étendant dans un plan médian longitudinal du réflecteur (8) et/ou s'étendant dans un plan perpendiculaire à la portion de surface (12) éclairée et à la direction longitudinale, le long de laquelle les projecteurs (6) sont alignés, et/ou s'étendant dans un plan vertical dans le cas d'une disposition des projecteurs (6) dans la zone du bord supérieur de la portion de surface (12) éclairée et/ou dans un plan horizontal dans le cas d'une disposition des projecteurs (6) sur une zone de bord latérale de la portion de surface (12) éclairée, les sources lumineuses (7) étant disposées respectivement dans la zone de la section d'ouverture (8q) du réflecteur (8) associé à l'intérieur de la zone d'espace entourée par le bord du réflecteur, les sources lumineuses (7) étant disposées respectivement décalées du côté sur lequel le rétrécissement (8c) a une plus faible profondeur, en partant du milieu du réflecteur, par rapport au rétrécissement (8c) du réflecteur (8) associé.
  10. Dispositif d'éclairage selon l'une des revendications précédentes 6 à 9, dans lequel les réflecteurs (8) sont pourvus au moins en partie d'un facettage (80) qui comprend une pluralité de facettes (81) sur la surface réfléchissante du réflecteur (8) respectif, le facettage (80) étant prévu sur les deux demi-coques (8a, 8b) du réflecteur respectif, en particulier sur toute la surface réfléchissante, et/ou comprenant plus de cinquante, de préférence plus de cent facettes (81) par demi-coque et/ou comprenant une répartition approximativement uniforme des facettes (81) dans plus de dix rangs et colonnes dans la direction longitudinale et transversale de la surface réfléchissante, et/ou au moins une partie de la surface réfléchissante des réflecteurs (8) étant pourvue d'une microstructure et/ou structure en peau d'orange géométriquement irrégulière ou régulière.
  11. Dispositif d'éclairage selon l'une des revendications précédentes 6 à 10, dans lequel les sources lumineuses (7) sont disposées respectivement sur un bras porteur (9a) qui dépasse d'un bord du réflecteur (8) au-dessus de la section d'ouverture (8q) du réflecteur (8), les sources lumineuses (7) étant disposées respectivement sur le côté du bras porteur (9a) respectif tourné vers le réflecteur (8), le bras porteur (9a) faisant de préférence partie d'une carte de circuits imprimés (9), qui possède dans la zone des réflecteurs (8) respectivement un évidement de réflecteur (9b) adapté de préférence au contour circonférentiel du réflecteur, et dont le bord entoure le réflecteur (8) associé et à travers lequel les réflecteurs (8) projettent la lumière respectivement captée sur la portion de façade/mur (12) éclairée.
  12. Dispositif d'éclairage selon l'une des revendications précédentes 6 à 11, dans lequel les projecteurs (6) sont disposés à proximité de la portion de surface, en particulier de façade/mur/plafond/sol (12) éclairée de telle manière que le rapport b/h entre la distance du projecteur (b) d'avec la portion de surface (12) et l'extension longitudinale, en particulier la hauteur (h) ou la largeur, de la portion de surface (12) est de 1:4 ou moins, de préférence de 1:5 ou moins, en particulier compris entre 1:8 et 1:25, et les réflecteurs (8) génèrent une distribution de l'intensité lumineuse, qui possède, le long de lignes parallèles à ladite extension longitudinale, en particulier hauteur (h), de la portion de surface (12), sur toute l'extension longitudinale de la portion de surface éclairée, un rapport d'intensité lumineuse entre l'intensité lumineuse minimale (Emin) et l'intensité lumineuse maximale (Emax) de 1:10, c'est-à-dire 0,1 ou plus, en particulier 1:2,5 ou plus, les réflecteurs (8) présentant des contours tels que la distribution de l'intensité lumineuse sur la portion de façade/mur (12) éclairée possède des courbes isophotes en forme de demi-ovale, les courbes isophotes en forme de demi-ovale possédant de préférence un rapport entre la hauteur et la largeur d'au moins 2:1.
  13. Dispositif d'éclairage selon l'une des revendications précédentes 6 à 12, dans lequel la portion de façade/de mur (12) éclairée va sensiblement du sol jusqu'à la hauteur de la rangée de projecteurs (6) et/ou la portion de façade/de mur (12) éclairée possède un bord supérieur approximativement à la hauteur de la rangée de projecteurs et un bord inférieur approximativement à la hauteur du sol et/ou approximativement une certaine distance sous la rangée de projecteurs, qui correspond à un multiple compris entre quatre et vingt de la distance entre la rangée de projecteurs et la façade (2, 3), les réflecteurs (8) présentant des contours tels autour de la source lumineuse (7) associée que les projecteurs (6) possèdent un masquage parallèle à la façade parallèle à la portion de surface (12) éclairée et/ou la puissance lumineuse tendant vers zéro dans un plan parallèle à la portion de surface (12), qui traverse la rangée de projecteurs, dans une zone près du sol et/ou dans une zone latérale à côté de la portion de surface (12) éclairée, les projecteurs (6) possédant respectivement, vus dans un plan vertical perpendiculaire à la façade/au mur (2, 3), un angle de masquage (360°-α) supérieur à 270°, de préférence compris entre 270° et 280°, et comportant dans un plan horizontal perpendiculaire à la façade/au mur (2, 3) un angle de masquage (360°-β) supérieur à 200°, de préférence compris entre 240° et 270°.
  14. Dispositif d'éclairage selon l'une des revendications précédentes 6 à 13, dans lequel les portions de surface (12) éclairées respectivement par un projecteur (6) se chevauchent les unes les autres.
EP13750264.7A 2012-08-03 2013-08-02 Dispositif d'éclairage Active EP2880361B1 (fr)

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DK17161523.0T DK3199869T3 (da) 2012-08-03 2013-08-02 Belysningsindretning
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DE102012015394.5A DE102012015394A1 (de) 2012-08-03 2012-08-03 Fassaden- und/oder Wandbeleuchtungsvorrichtung
PCT/EP2013/002312 WO2014019703A1 (fr) 2012-08-03 2013-08-02 Dispositif d'éclairage

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EP3217070B1 (fr) 2016-03-11 2018-06-27 Prolicht GmbH Dispositif d'éclairage
DE102016123006A1 (de) * 2016-11-29 2018-05-30 Erco Gmbh Wandfluter
DE202016106648U1 (de) 2016-11-29 2018-03-01 Erco Gmbh Wandfluter
DE202017103077U1 (de) * 2017-03-03 2018-06-05 Bartenbach Holding Gmbh Beleuchtungsvorrichtung
CN113007638B (zh) * 2021-03-11 2023-02-17 苏州欧普照明有限公司 洗墙灯

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EP3199869B1 (fr) 2020-06-24
DK3199869T3 (da) 2020-09-28
WO2014019703A1 (fr) 2014-02-06
EP2880361A1 (fr) 2015-06-10
EP3199869A1 (fr) 2017-08-02
DE102012015394A1 (de) 2014-02-06

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