EP2894394B1 - Dispositif d'éclairage pour l'éclairage des bâtiments, façades ou parois - Google Patents

Dispositif d'éclairage pour l'éclairage des bâtiments, façades ou parois Download PDF

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Publication number
EP2894394B1
EP2894394B1 EP14368006.4A EP14368006A EP2894394B1 EP 2894394 B1 EP2894394 B1 EP 2894394B1 EP 14368006 A EP14368006 A EP 14368006A EP 2894394 B1 EP2894394 B1 EP 2894394B1
Authority
EP
European Patent Office
Prior art keywords
lighting device
reflection surface
light
reflector
light source
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
EP14368006.4A
Other languages
German (de)
English (en)
Other versions
EP2894394A1 (fr
Inventor
Florian Rocard
Alice Mulin
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.)
ZG Lighting France SAS
Original Assignee
ZG Lighting France SAS
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 ZG Lighting France SAS filed Critical ZG Lighting France SAS
Priority to EP14368006.4A priority Critical patent/EP2894394B1/fr
Priority to PCT/EP2015/050249 priority patent/WO2015104328A1/fr
Priority to CN201580004016.2A priority patent/CN105992910B/zh
Publication of EP2894394A1 publication Critical patent/EP2894394A1/fr
Application granted granted Critical
Publication of EP2894394B1 publication Critical patent/EP2894394B1/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
    • 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
    • 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
    • F21W2131/107—Outdoor lighting of the exterior of buildings

Definitions

  • the present invention relates to a lighting device for illuminating buildings, facades or walls, as well as to a corresponding lighting system for illuminating buildings, facades or walls.
  • lighting devices for illuminating buildings, facades or walls are well-known, for example in documents EP 1 843 086 A1 or EP 2 375 130 A1 .
  • the lighting devices are positioned either with an offset from the surface to be illuminated or at the bottom or top side of the surface to be illuminated.
  • a relative wide and homogeneous illumination of the surface can be provided.
  • a positioning with the required offset is not possible due to the installation environment.
  • the lighting device is positioned at the bottom or top side of the surface to be illuminated (e.g. as a so called wall washer), it is difficult to provide a homogeneous and wide illumination.
  • a lighting device for illuminating buildings, facades or walls comprising: at least one light source comprising at least one light emitting diode; at least one reflector comprising an essentially saddle-shaped reflection surface, wherein the light source is arranged in such a way that at least a part of the light emitted by the light source is directed to the reflection surface of the reflector; and wherein the light is reflected by the reflection surface in such a way that a wide light distribution of the lighting device is provided at least in a direction parallel to a surface to be illuminated and perpendicular to a main axis of the reflection surface.
  • saddle-shaped has to be understood as any structure having a mainly rounded shape with an elevated area and two laterally arranged indentations (i.e . two minima in the reflection surface) extending there from, thereby providing a surface/structure commonly known from a saddle.
  • a wide light distribution i.e . a relatively broad light distribution
  • a main axis of the reflection surface e.g. a symmetry line of the saddle-shaped reflection surface
  • the lighting device can be arranged with an offset from the surface to be illuminated or near the top or bottom side of the surface. Furthermore, in case the lighting device is arranged near the top or bottom side of the surface ( i.e . in case the lighting device is used as a so called wall washer), the lighting device can be arranged to illuminate the surface directly or indirectly.
  • the presently used light source can be provided as a relatively compact structure such that there are essentially no design limitations allowing using a specifically adapted reflector (i.e . a specifically adapted and arranged reflection surface).
  • a specifically adapted reflector i.e . a specifically adapted and arranged reflection surface.
  • the reflection surface is mirror symmetrical with respect to the main axis of the reflection surface.
  • an essentially homogenous distribution of the light emitted by the lighting device can be provided in a direction parallel to the surface to be illuminated.
  • the reflection surface has a shape corresponding to a sector of a circle, preferably having an interior angle between 90° and 220° DEG, more preferably between 150° and 200° DEG, and even more preferably between 170° and 190° DEG. It is further preferred that in top view, the main axis of the reflection surface (i.e . the center of the elevated area) halves the reflection surface.
  • At least two indentations/minima of the reflection surface are provided at an angle between +/- 50° and +/- 90° DEG, preferably between +/- 60° and +/-85° DEG, and more preferably between +/- 70° and +/- 80° DEG with respect to the main axis of the reflection surface.
  • the minima i.e. the indentations
  • the maximum width i.e . the maximum angle
  • the reflection surface does not comprise any jump discontinuities. Thereby, it is possible to provide a relatively homogenous light distribution, since thereby no overlap of the emitted light occurs.
  • the light is distributed with an angle greater than +/-50° DEG preferably greater than +/- 70° DEG, and more preferably greater than +/- 75° DEG with respect to the main axis of the reflection surface.
  • the light is essentially distributed over the entire shape of the reflection surface ( i.e . over the entire sector of a circle).
  • the light is distributed with an angle greater than 60° DEG preferably greater than 70° DEG, and more preferably greater than 80° DEG, and most preferably the light is distributed with an angle of about 85° DEG; preferably measured at most from a horizontal plane downwards.
  • the lighting device in a direction parallel to a surface to be illuminated and perpendicular to the main axis of the reflection surface can be provided, but also a wide light distribution perpendicular to the surface to be illuminated can be provided.
  • the at least one baffle preferably comprises an inward reflection surface for redirecting light to the reflection surface of the reflector.
  • the baffle is preferably arranged such that it at least partially surrounds the light source in a horizontal plane and, if necessary, also above the light source ( i.e. opposite to the reflection surface with respect to the light source).
  • the inward reflection surface By means of the inward reflection surface, the respective part of the emitted light is redirected to the reflection surface, thereby further usable for an illumination.
  • further baffles can be used for adjusting the shape and dimension of the emitted light.
  • the lighting device comprises a housing in which the reflector and the at least one light source are housed.
  • the reflection surface is arranged (preferably downwards) inclined in the housing with its main axis with respect to a plane parallel to the surface to be illuminated, preferably with an angle between 20° and 60° DEG, more preferably between 30° and 50° DEG and most preferably between 35° and 45° DEG.
  • the light source is a directional light source emitting light essentially only in the direction to the reflection surface of the reflector. Thereby, light losses can be minimized and also any unintended scattering can be avoided.
  • the at least one light source is arranged above the main axis of the reflection surface, preferably in the center of the sector of a circle.
  • the light source preferably comprises a high brightness light emitting diode, a light emitting diode, a ray/cluster and/or a chip on board light emitting diode arrangement.
  • the lighting device comprises at least two light sources arranged with an offset with respect to the main axis of the reflection surface such that each light source emits light to a half of the mirror symmetrical shaped reflection surface.
  • each light source emits light to a half of the mirror symmetrical shaped reflection surface.
  • At least one light source may comprise a color light source (e.g . a RGB, RGBA or a RGBW module) and as the case may be, diffuser means (e.g . a diffuser plate or a diffuser chamber arranged behind the light source or in front of an outlet window) for mixing the colors.
  • a color light source e.g . a RGB, RGBA or a RGBW module
  • diffuser means e.g a diffuser plate or a diffuser chamber arranged behind the light source or in front of an outlet window
  • a certain color mixing can be provided which in some applications is already sufficient.
  • the present invention further relates to a lighting system for illuminating buildings, facades or walls comprising a lighting device as explained above.
  • the above-explained lighting device can be arranged with an offset from the surface to be illuminated and near the top or bottom side of the surface to be illuminated providing a wide and homogeneous light distribution.
  • FIG. 1 is a schematic view of a lighting device 100 comprising preferably a housing 110 in which a light source module is housed, preferably comprising a high brightness light emitting diode (not shown) being arranged above a reflector 120.
  • the light source may also comprise a color light source (e.g. a RGB, RGBA or a RGBW module) and as the case may be, diffuser means (e.g. a diffuser plate or a diffuser chamber arranged behind the light source or in front of an outlet window) for mixing the colors.
  • the lighting device 100 further comprises one optional baffle 140 for adjusting the illumination window of the lighting device 100.
  • the inner side of the baffle 140 is provided with an inward reflection surface for redirecting light to the reflector 120.
  • the reflector 120 is arranged inclined with respect to the plane 130 (i.e . the vertical plane which is parallel to the surface to be illuminated). In the shown preferred embodiment, the reflector 120 is arranged inclined with respect to the plane 130 with an angle of about 30° DEG. However, depending on the specific application ( e.g . the specific mounting offset from the wall to be illuminated), the reflector 120 may be arranged with an angle between 20° and 60° DEG, more preferably between 30° and 50° DEG. Notably, by means of the inclined arrangement of the reflector 120, the area to be illuminated by the lighting device 100 can be adjusted.
  • the lighting device 100 distributes light perpendicular to the surface to be illuminated with an angle 135 greater than 60° DEG.
  • light can be distributed in a direction perpendicular to the surface to be illuminated with an angle preferably greater than 70° DEG and more preferably greater than 80° DEG, and most preferably, the light is distributed with an angle 85° DEG.
  • this angle is measured from the plane 130 downwards.
  • the angle of the light distribution perpendicular to the surface to be illuminated can be adjusted by means of the inclined arrangement of the reflector 120 and/or by means of the specific geometry of the reflector 120 ( e.g. by means of the specific height of the elevation) and/or by further optical means like a baffle as described in the following.
  • the shown lighting device 100 is adapted to be mounted with a (relative small) offset from the surface to be illuminated of about 0.95 m.
  • the lighting device 100 can be mounted on a frame which is in turn mounted on the top or bottom side of the surface to be illuminated (not shown),
  • Figure 2 is a schematic view of the reflector 120 used in the lighting device 100 in figure 1 .
  • the reflector 120 comprises an upper reflection surface 150 having an essentially saddle-shape surface.
  • saddle-shape according to the present invention is to be understood as a structure having a kind of a wave form with a wave crest ( i.e . provided by the elevation) positioned at the main axis 160 and two laterally arranged wave troughs ( i.e . provided by indentations), wherein the wave crest and the wave troughs convert together, preferably at a central section 170 of the reflection surface 150, thereby providing a commonly known saddle-shape surface.
  • Figure 3 is a schematic top view of the reflector 120.
  • the reflection surface 150 has a shape corresponding to a sector of a circle having a center point in the center section 170, wherein in the shown preferred embodiment, the sector of a circle has an interior angle of about 190° DEG (indicated by the auxiliary line 180).
  • this interior angle is between 90° and 220° DEG, more preferably between 150° and 200° DEG, and even more preferably between 170° and 190° DEG.
  • the maximum width i.e . the maximum angle
  • the reflection surface 150 is preferably mirror symmetrical with respect to the main axis 160 of the reflection surface 150.
  • the minima i.e. the indentations
  • auxiliary lines 190 the minima are highlighted by auxiliary lines 190.
  • the two minima are provided at an angle of about +/- 80° DEG with respect to the main axis 160 of the reflection surface 150.
  • a light source is arranged above the central section 170 of the reflection surface 150, light is essentially distributed between both minima, thus providing in the preferred embodiment a light distribution in a direction parallel to a surface to be illuminated and perpendicular to the main axis 160 of the reflection surface 150 with an angle of about 160° DEG.
  • the minima can be provided at an angle between +/- 50° and +/- 90° DEG, preferably between +/- 60° and +/- 85° DEG, and more preferably between +/- 70° and +/- 80° DEG with respect to the main axis 160 of the reflection surface.
  • a wide light distribution can be achieved, preferably with an angle greater than +/- 50° DEG, preferably greater than +/- 70° DEG, and even more preferably greater than +/- 75° DEG.
  • Figure 4 is a side view of the reflector 120 as shown in figures 2 and 3 .
  • the reflection surface 150 does not comprise any jump discontinuities.
  • the outer circumference of the reflection surface 150 runs downwards to the shown minimum and runs subsequently upwards to the front-tip 210 of the reflection surface 150. Since in the preferred embodiment, the reflection surface 150 is mirror symmetrical with respect to the main axis 160, the circumference at the not shown other side is equally provided.
  • Figure 5 is a cross-section view along the main axis 160 of the reflection surface 150.
  • the main axis 160 is provided by a flat curve slightly directed downwardly from the rear edge 200 to a minimum and then slightly directed upwardly to the front-tip 210.
  • Figure 6 is a schematic top view of the reflector 120, wherein above the center section 170 of the reflection surface 150, a light module 220 comprising a high brightness light emitting diode is arranged.
  • the light module 220 is preferably a light source having only a directional light emitting light essentially only in the direction to the reflection surface 150 of the reflector 120.
  • the use of a high brightness light emitting diode is preferred, however, also light emitting diode arrays/clusters and/or chip on board light emitting diode arrangements can be used depending on the specific application.
  • As an alternative or in addition to the arrangement of the light module 220 above the center section i.e .
  • each light source emits light to a predetermined area of the reflection surface 150 (e.g . one light source is arranged slightly left of the main axis 160 and a further light source is arranged slightly right of the main axis 160) such that the emitted light of each light sources is directed and assigned to a half of the mirror symmetrical shaped reflection surface 150.
  • Figure 7 illustrates a light distribution obtained by a lighting device 100 according to the present invention.
  • Figure 8 is a schematic view of the light distribution provided by the lighting device 100. As can be taken from figure 8 , the lighting device 100 is arranged near the bottom side of the surface to be illuminated providing an indirect illumination of the surface.
  • Figure 9 is a schematic view of the light distribution provided by the lighting device 100. As can be taken from figure 9 , the lighting device 100 is arranged near the bottom side of the surface to be illuminated providing a direct illumination of the surface.
  • Figure 10 is a schematic view of the light distribution provided by the lighting device 100. As can be taken from figure 10 , the lighting device 100 is arranged with an offset from the surface to be illuminated.
  • the above-shown embodiment is a preferred embodiment, but that, however, also different shapes of the reflection surface can be used, as long as the shape of the reflection surface is essentially saddle-shaped.
  • the specific use of a lighting device may require that the reflection surface has to be provided with different gradients, thereby adjusting the emitting light cone.
  • the reflection surface may be provided by discrete surface areas, as long as the transitions between these areas provide an essentially uniform distribution of the light.

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

Claims (15)

  1. Dispositif d'éclairage (100) pour éclairer des bâtiments, façades ou murs, comprenant :
    - au moins une source de lumière (220) comprenant au moins une diode électroluminescente ;
    - au moins un réflecteur (120) comprenant une surface de réflexion sensiblement en forme de selle (150) ;
    dans lequel la source de lumière (220) est agencée de telle sorte qu'au moins une partie de la lumière émise est dirigée vers la surface de réflexion (150) du réflecteur (120) ;
    dans lequel la lumière est réfléchie par la surface de réflexion (150) d'une manière telle qu'une large distribution de lumière du dispositif d'éclairage (100) est fournie au moins dans une direction parallèle à une surface à éclairer et perpendiculaire à un axe principal (160) de la surface de réflexion (150), et
    dans lequel la surface de réflexion (150) du réflecteur (120) comprend au moins deux minima (190) fournis à un angle entre +/- 50° et +/- 90° DEG par rapport à l'axe principal (160) de la surface de réflexion (150).
  2. Dispositif d'éclairage (100) selon la revendication 1, dans lequel la surface de réflexion (150) présente une symétrie de miroir par rapport à son axe principal (160).
  3. Dispositif d'éclairage (100) selon l'une quelconque des revendications précédentes, dans lequel en vue de haut la surface de réflexion (150) a une forme correspondant à un secteur d'un cercle, ayant de préférence un angle intérieur entre 90° et 220° DEG, plus préférablement entre 150° et 200° DEG, et encore plus préférablement entre 170° et 190° DEG.
  4. Dispositif d'éclairage (100) selon l'une quelconque des revendications précédentes, dans lequel les au moins deux minima (190) sont fournis à un angle entre +/- 60° et +/- 85° DEG, et de préférence entre +/- 70° et +/- 80° DEG par rapport à l'axe principal (160) de la surface de réflexion (150).
  5. Dispositif d'éclairage (100) selon l'une quelconque des revendications précédentes, dans lequel la surface de réflexion (150) ne comprend aucune discontinuité de saut.
  6. Dispositif d'éclairage (100) selon l'une quelconque des revendications précédentes, dans lequel le réflecteur (120) est conçu et agencé de telle sorte qu'en vue de haut, la lumière est distribuée avec un angle supérieur à +/- 50° DEG, de préférence supérieur à +/- 70° DEG, et plus préférablement supérieur à +/- 75° DEG par rapport à l'axe principal (160) de la surface de réflexion (150).
  7. Dispositif d'éclairage (100) selon l'une quelconque des revendications précédentes, dans lequel le réflecteur (120) est conçu de telle sorte que perpendiculaire à la surface à éclairer, la lumière est distribuée avec un angle supérieur à 60° DEG, de préférence supérieur à 70° DEG, et plus préférablement supérieur à 80° DEG, et le plus préférablement la lumière est distribuée avec un angle d'environ 85° DEG.
  8. Dispositif d'éclairage (100) selon l'une quelconque des revendications précédentes, dans lequel adjacent au réflecteur (120) au moins un déflecteur (140) est agencé entourant au moins partiellement la source de lumière, dans lequel l'au moins un déflecteur (140) comprend de préférence une surface de réflexion vers l'intérieur pour rediriger la lumière vers la surface de réflexion (150) du réflecteur (120).
  9. Dispositif d'éclairage (100) selon l'une quelconque des revendications précédentes, dans lequel le dispositif d'éclairage (100) comprend un logement (110) dans lequel le réflecteur (120) et l'au moins une source de lumière (220) sont logés.
  10. Dispositif d'éclairage (100) selon l'une quelconque des revendications précédentes, dans lequel le réflecteur (120) est agencé incliné vers le bas avec son axe principal (160) par rapport à un plan (130) qui est parallèle à la surface à éclairer, de préférence avec un angle entre 20° et 60° DEG, plus préférablement entre 30° et 50° DEG et le plus préférablement entre 35° et 45° DEG.
  11. Dispositif d'éclairage (100) selon l'une quelconque des revendications précédentes, dans lequel la source de lumière (220) est une source de lumière directionnelle n'émettant de la lumière sensiblement que dans la direction vers la surface de réflexion du réflecteur.
  12. Dispositif d'éclairage (100) selon l'une quelconque des revendications précédentes, dans lequel l'au moins une source de lumière (220) est agencée au-dessus de l'axe principal (160) de la surface de réflexion (150), de préférence au centre du secteur d'un cercle.
  13. Dispositif d'éclairage (100) selon l'une quelconque des revendications précédentes, dans lequel le dispositif d'éclairage (100) comprend au moins deux sources de lumière agencées avec un décalage par rapport à l'axe principal (160) de la surface de réflexion (150) de telle sorte que chaque source de lumière émet de la lumière vers une zone prédéterminée de la surface de réflexion (150).
  14. Dispositif d'éclairage (100) selon l'une quelconque des revendications précédentes, dans lequel la source de lumière (220) comprend une diode électroluminescente à luminosité élevée, un réseau/groupement de diodes électroluminescentes, un module de couleur (par exemple un module RVB, RVBA ou RVBB) et/ou un agencement de diodes électroluminescentes à puce sur carte, dans lequel facultativement le dispositif d'éclairage comprend en outre un moyen de diffusion, de préférence des plaques, disques ou chambres de diffusion.
  15. Système d'éclairage pour éclairer des bâtiments, façade ou murs, comprenant un dispositif d'éclairage (100) selon l'une quelconque des revendications 1 à 14.
EP14368006.4A 2014-01-10 2014-01-10 Dispositif d'éclairage pour l'éclairage des bâtiments, façades ou parois Active EP2894394B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP14368006.4A EP2894394B1 (fr) 2014-01-10 2014-01-10 Dispositif d'éclairage pour l'éclairage des bâtiments, façades ou parois
PCT/EP2015/050249 WO2015104328A1 (fr) 2014-01-10 2015-01-08 Dispositif d'éclairage pour des bâtiments, des façades ou des parois à éclairement
CN201580004016.2A CN105992910B (zh) 2014-01-10 2015-01-08 用于照亮建筑物、立面或墙壁的照明装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14368006.4A EP2894394B1 (fr) 2014-01-10 2014-01-10 Dispositif d'éclairage pour l'éclairage des bâtiments, façades ou parois

Publications (2)

Publication Number Publication Date
EP2894394A1 EP2894394A1 (fr) 2015-07-15
EP2894394B1 true EP2894394B1 (fr) 2021-06-09

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EP14368006.4A Active EP2894394B1 (fr) 2014-01-10 2014-01-10 Dispositif d'éclairage pour l'éclairage des bâtiments, façades ou parois

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EP (1) EP2894394B1 (fr)
CN (1) CN105992910B (fr)
WO (1) WO2015104328A1 (fr)

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Publication number Priority date Publication date Assignee Title
CN113301316B (zh) * 2021-05-25 2022-04-05 深圳市皓龙激光设备有限公司 户外激光亮化方法、系统、控制器及存储介质

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Publication number Priority date Publication date Assignee Title
DE102006016021A1 (de) * 2006-04-05 2007-10-11 Zumtobel Lighting Gmbh Reflektorleuchte
EP2375130B1 (fr) * 2010-04-09 2014-07-02 Thorn Europhane S.A. Module d'éclairage pour lumière de tunnel, route ou rue
DE202011003261U1 (de) * 2011-02-25 2011-04-28 Hess Verwaltungs-Gmbh Leuchteneinsatz, insbesondere für eine Bodenleuchte

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CN105992910B (zh) 2020-05-15
CN105992910A (zh) 2016-10-05
EP2894394A1 (fr) 2015-07-15
WO2015104328A1 (fr) 2015-07-16

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