EP2129963B1 - Led-beleuchtungsvorrichtung - Google Patents

Led-beleuchtungsvorrichtung Download PDF

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Publication number
EP2129963B1
EP2129963B1 EP08775672A EP08775672A EP2129963B1 EP 2129963 B1 EP2129963 B1 EP 2129963B1 EP 08775672 A EP08775672 A EP 08775672A EP 08775672 A EP08775672 A EP 08775672A EP 2129963 B1 EP2129963 B1 EP 2129963B1
Authority
EP
European Patent Office
Prior art keywords
leds
lighting device
led
led lighting
light rays
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.)
Not-in-force
Application number
EP08775672A
Other languages
English (en)
French (fr)
Other versions
EP2129963A1 (de
Inventor
Michel Petit
Stéphane URRUTIA
Jean-Marc Bernex
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.)
Lyracom
Original Assignee
Lyracom
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
Priority claimed from FR0753708A external-priority patent/FR2913484B1/fr
Priority claimed from FR0753707A external-priority patent/FR2913483B1/fr
Application filed by Lyracom filed Critical Lyracom
Priority to PL08775672T priority Critical patent/PL2129963T3/pl
Publication of EP2129963A1 publication Critical patent/EP2129963A1/de
Application granted granted Critical
Publication of EP2129963B1 publication Critical patent/EP2129963B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
    • F21V29/763—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/08—Lighting devices intended for fixed installation with a standard
    • F21S8/085—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light
    • F21S8/086—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light with lighting device attached sideways of the standard, e.g. for roads and highways
    • 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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/02—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using parallel laminae or strips, e.g. of Venetian-blind type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/10—Combinations of only two kinds of elements the elements being reflectors and screens
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/007—Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane
    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • 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
    • F21V7/0083—Array of reflectors for a cluster of light sources, e.g. arrangement of multiple light sources in one plane
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
    • F21V29/67—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to an LED lighting device.
  • a lighting device intended for public lighting, or more generally for outdoor lighting generally comprises a lamp mounted in a lantern fixed to the upper end of a mast or on a support situated at a sufficient height.
  • This type of lighting must meet standards concerning the quality of the lighting, particularly in terms of luminous flux, luminance, area of the illuminated area, uniformity of luminance on said area and dazzling of the source .
  • a lighting device intended for street lighting must illuminate a substantially rectangular surface on the ground of approximately 24 meters by 6 meters, with illumination greater than 10 lux, for example, and a relatively high luminance. homogeneous on said zone.
  • LED lighting devices are nowadays considered as an advantageous alternative in terms of lowering electrical energy consumption and increasing the lifetime of said device. Moreover, an LED lighting device is intended to obtain a precision of illumination with a controlled amount of light.
  • An LED has a large angle of illumination, which causes a wide diffusion and many losses in an application to illuminate an area remote from said LED. Also, the LED is generally associated with concentration means for gathering the light rays in a beam of maximum light intensity oriented towards the target to be illuminated.
  • an LED has a relatively low luminous power, so that it is necessary to associate several LEDs in order to obtain a luminous power substantially equivalent to that of a lighting device using a lamp.
  • several LEDs are associated they are grouped in the form of bars or light spots generally comprising three LEDs.
  • LED lighting devices are generally used for directional lighting to illuminate a small area in the manner of a projector illuminating a performance stage.
  • LED lighting devices for public lighting with LEDs or LED strips on brackets to direct LED light beams to an area to be illuminated.
  • WO-98/33007 comprising several LEDs and means for processing the light rays emitted by said LEDs.
  • this document proposes an arrangement of the LEDs in different directions on an inclined support and provides processing means comprising concentrating means and refraction means dedicated to each LED. .
  • a second lighting device of the prior art comprises several LEDs, a curved support comprising a location for each of the LEDs, and processing means light rays emitted by the LEDs comprising a reflection and refraction device dedicated to each LED.
  • the orientation of the light beams of the LEDs in the direction to be illuminated is obtained by virtue of an arrangement of said LEDs on a support having inclined surfaces between them or curves, these relatively complex designs. a support do not facilitate its realization and its cooling.
  • a third device of the prior art comprises a plane support of several LEDs arranged in a matrix manner and means for processing the light beams emitted by the LEDs, said processing means comprise reflection means in the form of inclined blades separating the LED columns and superimposed refraction means said reflection means.
  • the present invention aims to overcome the disadvantages of the prior art by providing an LED lighting device more particularly for outdoor lighting, simple design and to obtain a uniform luminance illumination area.
  • the invention relates to an LED lighting device, more particularly adapted for outdoor lighting, comprising a plurality of LEDs on at least one support plate arranged in rows and columns, a support block comprising a plate one of whose faces forms the substantially plane bottom of a housing in which is placed said at least one substantially flat support plate so as to cooperate closely with the bottom of the housing, heat dissipation means provided at the level of the other face of the plate of the support block, and means for processing the light rays emitted by the LEDs comprising concentrating means, reflection means for orienting the light rays to obtain a desired illumination zone and refraction means for optimizing the transmission of light rays to the outside by limiting the parasitic reflections of the light rays towards the inside of the d ispositif, the concentrating means being constituted for each LED of a concentrator, said housing containing said support plate being closed by the refraction means, the LED lighting device comprising reflection means, distinct from the refraction means, characterized in that the reflection means comprise
  • an illustrative lighting lantern 10 may be shown for illustration on a candelabrum, against the facade of a building or on any other lighting support.
  • This lantern 10 comprises a frame 12 on which is fixed a shell 14, at least a portion, generally the lower part, is open or substantially transparent so as to let the light provided by a lighting device or lamp located at the interior of said shell 14.
  • an LED lighting device 16 capable of being arranged in a lighting lantern 10 more particularly intended for outdoor lighting, in particular a public place such as a road or street.
  • This application, represented in figure 2 is not limited to the possibilities of using an LED lighting device according to the invention.
  • an LED lighting device 16 comprises several LEDs 18 mounted on at least one support plate 20 placed between a support block 22 and means 24 for processing the light beams emitted by the LEDs, the LEDs 18 being provided to provide power at least equivalent to that provided by existing lighting devices.
  • the LEDs 18 of the lighting device 16 are LEDs of power between 1 and 5 W to give an order of ideas. These values are in no way limiting.
  • the LEDs 18 of the lighting device 16 are used at half their maximum power of use.
  • the LEDs 18 are likely to offer a longer service life, such as a service life of approximately 50,000 hours corresponding, for example, to the specifications that require a public lighting project.
  • the plurality of LEDs 18 of the lighting device 16 are connected in series so as to simplify the regulation of their power supply, said device 16 being powered by a mains voltage in most lighting applications of an object. or a place.
  • parallel editing could be considered.
  • the support plate 20 is in the form of a plate of a printed circuit on one of the faces of which are reported the LEDs.
  • the LEDs as well as all the components (represented in the form of at least one module 26 on the figure 14
  • the function of supplying and managing LEDs is reported on one of the faces of a flat support plate.
  • the support plate 20 may comprise only the LEDs on one of its faces, the components providing, in particular, the power supply and LED management function being grouped together in the form of at least one implanted module 26. in another area of the device, for example at the rear of the support block.
  • the LED power supply and management can be carried out according to the assembly and with the components detailed in the French patent application. FR-2901956 . Nevertheless, other solutions are possible.
  • LEDs 18 may be implanted inside the device in the form of an LED matrix (L 1 , L 2 , ..., Li, ..., Ln).
  • the present invention is not limited to this LED arrangement, said LEDs being able to be arranged according to other arrangements.
  • the LEDs may not be aligned but arranged along curves.
  • the LEDs are arranged along substantially rectilinear lines 28, parallel to a first axis 30 corresponding to the direction of the largest dimension of the zone. illuminated on the ground, and along substantially symmetrical columns 32 along a median axis 34 (substantially perpendicular to the first axis 30), certain columns 32 having a radius of curvature tending to distance the LEDs from the median axis 34 as and when they move away from the first axis 30.
  • the radius of curvature of the columns 32 decreases as a function of the spacing between the column and the median axis 34.
  • the LEDs are arranged in seven rows and eight columns.
  • the LEDs are spaced apart by a step of the order of 20 millimeters between lines and between columns.
  • This pitch of 20 mm between LEDs advantageously decreases the size thus favoring the adaptation of the lighting device 16 to an existing lantern 10.
  • this is a minimal step in order to ensure a compromise between the gain in space and too close proximity of the LEDs 18 which would disadvantageously favor their rise in temperature.
  • the device 16 In order to be placed in a shell 14 of an existing lantern 10 and as illustrated in FIG. figure 5 , the device 16 according to the invention comprises a support block 22 having fastening means on said shell 14 or directly on a frame 12 to which is fixed the lantern 10 lighting.
  • These fixing means of the support block 22 are not detailed here because they can be in many forms and are known to those skilled in the art.
  • the lighting device forms a lantern as illustrated in FIGS. Figures 9 10 and 14
  • the lighting device of the invention comes instead of existing lanterns.
  • the support block 22 comprises a housing 36 provided for receiving at least one LED support plate 20, said housing being closed by the means 24 for processing the light rays emitted by the LEDs.
  • This housing 36 is substantially parallelepipedic and of sufficient depth to accommodate the superposition of at least one platinum support 20 of LEDs and means 24 for processing the light rays emitted by the LEDs.
  • This housing 36 comprises side walls 38 and a bottom 40.
  • the bottom 40 is substantially plane to cooperate intimately with said at least one support plate 20 which is also flat in order to ensure efficient heat transfer between the support plate 20 and the support block 22.
  • the support plate 24 of LED is fixed on the bottom 40 by fastening means such as fixing screws.
  • conduction means 42 can be provided to efficiently transfer the heat dissipated by the LEDs to the support block 22.
  • These heat conduction means 42, interposed between a support plate 20 and the support block 22, can be produced by a thermally conductive but electrically insulating film.
  • the lighting device 16 In order to evacuate the heat produced by the LEDs 18 and transmitted to the support block 20, the lighting device 16 according to the invention has static heat dissipation means 44 and means for generating a forced air flow. 46.
  • Said heat dissipation means 44 make it possible to increase the heat exchange surface of the element, here the support block 22, by which the heat is dissipated.
  • These heat dissipation means 44 may be made by cooling fins.
  • the support block 22 comprises a plate 48 made of a thermally conductive material, in particular a metallic material, comprising on one of its faces, so-called lower, the housing 36 (the side walls 38 projecting from said plate 48) and on the other side, said upper, of fins 50 disposed in planes perpendicular to said plate.
  • the dimensions of the fins and their spacings are determined in order to optimize heat exchange.
  • the means for generating a forced air flow 46 make it possible to create an air flow that substantially improves the dissipation of heat.
  • Said means 46 such as a fan, may be on the lower and / or upper side of the support block 22.
  • heat dissipation means 44 are also provided at the lower face of the plate 48 of the support block, arranged on the and other housing 36.
  • At least two vents 52 are provided to communicate the inside and the outside of the shell 14 so as to generate in combination with the ventilation means 46 a flow of air from the outside of the shell inwards so to introduce fresh air and the interior to the outside of the hull in order to evacuate the hot air.
  • vents 52 are provided to communicate the housing 36 with the outside. These vents 52 combined with the means 46 of ventilation can generate an air flow promoting the delivery of fresh air inside the housing 36 and the evacuation of hot air.
  • the support block 22 comprises upstream and downstream of the housing 36 gills having fins arranged in the longitudinal direction, attached to the lower face of the plate 48 and connecting said plate 48 and the upstream and downstream side walls 38 of the housing 36, at least one vent 52 being provided at each downstream or upstream side wall 38 of the housing 36.
  • the fact of closing the housing using the means 24 for processing the light beams makes it possible to reduce the number of parts and facilitates the maintenance of the device.
  • the closure of the housing 36 by the means 24 for processing the light beams makes it possible to avoid the use of any other transparent protective screen or cover that may disturb the distribution or deform the light beam obtained. thanks to said processing means 24.
  • the lighting device 16 comprises fixing means allowing the means 24 for processing the light rays emitted by the LEDs to be held on the support block 22 and to close the housing 36.
  • sealing 54 in particular a seal located at the periphery of the housing 36, are provided between the means 24 and the support block 22 to effectively complete the closure of the housing 36 made by said means 24 for processing the light beams.
  • the means 24 for processing the light rays emitted comprise means 56 for concentrating, because of the very open illumination angle of an LED and means 58 for directing the light rays so that the illumination on the ground corresponds to an illuminated area that meets the standards.
  • the means 24 are in the form of an optical element in one piece as shown in the drawings. Figures 5 to 8 or more optical elements superimposed as illustrated on the figures 10 and 11 .
  • the optical element 24 comprises a network of concentrators (C1, C2, ..., Ci, ..., Cn) each disposed in line with an LED.
  • Each concentrator (Ci) of the optical element 22 corresponds to a solid element of frustoconical or paraboloidal shape, centered on an LED and shaped to redirect and focus the light emitted by said LED.
  • a concentrator comprises a recess 60 in which is housed an LED (Li).
  • the network of concentrators (C1, C2,..., Ci,..., Cn) is produced in a single block, in full matter of the optical element.
  • each concentrator (Ci) of the network of concentrators (C1, C2, ..., Ci, ..., Cn) in front of each LED (Li) of the LED matrix (L1, L2, .. ., Li, ..., Ln) means for positioning the optical element may be provided at the support block 22 or the LED support plate 20. These positioning means may be made by at least one protruding element, such as a polarizer or locating, a boss, or any raised part of the support block 22 or a support plate 20 of LEDs capable of providing accurate positioning when setting up the optical element 24.
  • the means 56 of concentration are in the form of a plate 62 comprising on one of its faces (opposite to that facing the LEDs) protruding shapes in the form of corrugations 64 whose ridges are arranged above LED columns.
  • These corrugations 64 comprise for each LED a hollow concentrator 66 in the form of paraboloid opening via an opening 68 on the face of the plate 62 facing the LEDs.
  • Each concentrator 66 comprises a reflective surface for optimally reflecting the light rays emitted by the LED placed in said concentrator via the opening 68.
  • the plate 62 may be made of a reflective material or only the surface of each concentrator can be coated with a reflective material.
  • the orientation means 58 of the optical element 24 can be realized by a network of facets (F1, F2, ..., Fi, ..., Fn) corresponding to the LED matrix (L1, L2, ..., Li, ..., Ln) of the lighting device.
  • Each facet (Fi) of orientation of the optical element 22 is substantially centered on an LED (Li) and is of suitable geometric shapes and inclination determined to orient the light beam concentrated by the concentrator (Ci) of the LED (Li) corresponding.
  • the facets 70 of orientation of the optical element 24 are shifted, such as plano-convex lenses, also called Fresnel lenses.
  • the array of facets 70 of orientation (F1, F2,..., Fi,..., Fn) is produced in a single block, in full matter of the optical element 24.
  • each of the faces (Fi1, Fi2, ..., Fij, ..., End) of an orientation facet (Fi) is characterized by an angle of inclination ⁇ ij with respect to the plane of the support plate 20 of LED, the plane (XY) in the figure, and by at least one radius of curvature Rij.
  • the light rays 72 coming from a concentrator (Ci) of an LED (Li) are first refracted and / or reflected by the concentrator (Ci) corresponding to said LED (Li) so as to be assembled into a beam of maximum light intensity, then refracted by the facet (Fi) orientation corresponding to said LED (Li) so as to be directed and distributed optimally on the area to be illuminated.
  • the optical element 24 is preferably made of polymer by injection / extrusion molding, but it can be made of any other material.
  • the optical element 24 can be made from a polycarbonate with a surface treatment, including a coating, allowing it to resist UV.
  • the means 24 for processing the emitted light flux comprise, in addition to the concentrating means 56, orientation means 58 comprising reflection means 74 for orienting the light rays in order to obtain a zone desired illumination or complies with the standards and means 76 of refraction to optimize the transmission of light rays outside by limiting the parasitic reflections of light rays to the interior of the device, said means being stacked on top of each other from the support plate 20 to the outside.
  • the concentrating means 56 comprise a plate 62 whose periphery comprises lateral walls forming a housing 78 in which the reflection means 74 and the refraction means 76 fit in succession.
  • the dimensions of the side walls forming the housing 78 are adjusted to those of the housing 36.
  • the reflection means 74 comprise mirrors 80 in the shape of a V (in a section perpendicular to the LED columns) whose tip of the V is oriented towards the LEDs and describes a ridge perpendicular to the LED columns, a mirror 80 V-shaped substantially continuous at the base of each column of LEDs.
  • each LED the light rays emitted by each LED are distributed substantially equitably on both sides of the mirror 80 V located vertically above each LED and propagate to each mirror 80 at V.
  • V-shaped mirrors 80 of the reflection means 74 thus perform a global treatment of the light beams emitted by the LEDs.
  • This global treatment of the light beams emitted by the LEDs generates a fuzzy luminous spot of luminance that is more homogeneous than that of a luminous task obtained by a discrete treatment of the light beams according to the prior art.
  • the dimensions of the concentrator and the mirrors and their relative positions are determined in such a way that the light rays emitted by an LED which are not reflected by the concentrator corresponding to said LED are also not reflected by an adjacent mirror, no disposed above said LED.
  • This configuration makes it possible to avoid parasitic reflections and to adjust the distribution of radii R1 and radii R2. It is noted that the most energetic rays R1 are deflected to reach the most distant areas to be illuminated.
  • the dimensions of the concentrator and the mirrors and their relative positions make it possible to adjust the distribution between the radii R3a and R3b.
  • the refraction means 76 comprise a wall 82 whose material makes it possible to transmit the light rays and having at its inner face facing the LEDs corrugations 84 whose hollows or ridges are oriented according to FIG. direction of the LED columns and whose radius of curvature is adjusted so that the rays reflected by the mirrors 80 or by the concentrators have a zero or very low angle of incidence so that said rays are not reflected by said surface.
  • the outer surface of the wall 82 also comprises corrugations promoting the refraction of the light rays and limiting the reflection of light rays inwardly of the device.
  • the corrugations provided at the outer surface are not identical to those of the inner surface, so that the wall 82 does not have a constant thickness but areas with extra thicknesses improving the rigidity of said wall.
  • the wall 82 comprises stiffeners oriented perpendicular to the corrugations in order to stiffen said wall.
  • the refraction means 76 comprise a wall 82 whose material makes it possible to transmit the light rays and comprising, at its inner and outer faces, facing the LEDs, offset surfaces, in the manner of a Fresnel lens.
  • Said offset surfaces have a radius of curvature substantially corresponding to the radius of curvature of the LED columns 32, the radius of curvature of said offset surfaces decreasing as a function of the spacing relative to the central axis 34, so that the rays reflected by the mirrors 80 or concentrators have a zero or very low angle of incidence, promote the refraction of light rays and limit the reflection of light rays inwardly of the device.
  • an illumination zone as shown in FIG. figure 12 , with a substantially homogeneous luminance over the entire surface and an area compliant with the regulations.
  • the refraction means 76 are held on the support block 22 by the fixing means and seal the housing 36.
  • the sealing means 54 in particular a seal located at the periphery of the housing 36, are provided between the means 76 and the support block 22 to effectively complete the closure of the housing 36 made by said refraction means 76.
  • the fact of closing the housing using the means 76 of refraction makes it possible to reduce the number of parts, facilitates the maintenance of the device, and avoids the use of any other screen or transparent protective cover may disturb the distribution or deform the light beam obtained through the means 24 treatment.
  • V-shaped mirrors 80 as well as the refraction means 76 allow the realization of a substantially global and fuzzy treatment of the LED light beams to obtain a substantially homogeneous luminance on the entire surface of the area illuminated on the ground.
  • a brightness measurement module, an activity measurement module and a communication module can improve the management and power supply LED 18 lighting.
  • the activity measurement module and the brightness measuring means will make it possible to vary the light intensity provided by the device 16. lighting according to the need for lighting and ambient light.
  • the communication module can, thanks to a suitable communication protocol and more abundantly described in the French application.
  • FR-2899057 collect and transmit from one light point to another to a collector information on activity measurements and brightness measurements but also relating to a possible defect of a lighting device.
  • the management and power module, the brightness measurement module, the activity measurement module and the communication module are arranged on the face. of the support plate 20 at which are reported the LEDs.
  • the lighting device may comprise at least one microcontroller providing several functions, such as, for example, the function allowing the power supply to be adapted automatically according to the LED (s) used, or the function to manage the intensity of the lighting.
  • the first function makes it possible to make the device compatible with the majority of the LEDs that can be developed later and used in the lighting device.
  • the invention by measuring the luminous intensity emitted by the set of LEDs, in particular by using a measurement module as described in the French patent application FR-2899057 , it is possible to adjust the power supply thanks to the micro-controller in order to adapt it to the LEDs used and installed in the lighting device.
  • the microcontroller may comprise means for counting time from a time origin specific to the microcontroller and storage means enabling it to store the moment or times according to its time origin at which the ignition instruction or instructions or stop have been transmitted.
  • the microcontroller can manage the variations in luminous intensity in a temporal manner by referring to its means of counting time and instants according to its time origin at which the start or stop instructions have been transmitted to it.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Led Devices (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Claims (11)

  1. LED-Beleuchtungsvorrichtung, die insbesondere für die Außenbeleuchtung geeignet ist, umfassend mehrere LEDs (18), die auf wenigstens einer Tragplatte (20) angebracht und in Reihen (28) und Spalten (32) angeordnet sind, einen Tragblock (22), der eine Platte (48) umfasst, deren eine Seite den im Wesentlichen ebenen Boden einer Aufnahme (36) bildet, in welcher die wenigstens eine im Wesentlichen ebene Tragplatte (20) derart angeordnet ist, dass sie mit dem Boden der Aufnahme (36) innig zusammenwirkt, Mittel (44) zur Wärmeableitung, die im Bereich der anderen Seite der Platte (48) des Tragblocks (22) vorgesehen sind, sowie Mittel (24) zur Bearbeitung der durch die LEDs ausgesandten Lichtstrahlen, welche Konzentrationsmittel (56), Reflexionsmittel (74) zum Ausrichten der Lichtstrahlen, um einen gewünschten Beleuchtungsbereich zu erhalten, und Brechungsmittel (76) zur Optimierung der Übertragung der Lichtstrahlen nach außen, unter Begrenzung der Störreflexionen der Lichtstrahlen zur Innenseite der Vorrichtung, umfassen, wobei die Konzentrationsmittel (56) für jede LED von einem Konzentrator (66) gebildet sind, wobei die die Tragplatte (20) enthaltende Aufnahme (36) durch die Brechungsmittel (76) verschlossen ist, wobei die Reflexionsmittel (74) von den Brechungsmitteln (76) getrennt sind, wobei die LED-Beleuchtungsvorrichtung dadurch gekenntzeichnet ist, dass die Reflexionsmittel (74) V-förmige Spiegel (80), deren V-Spitze in Richtung der LEDs gerichtet ist, und einen im Wesentlichen durchgehenden V-förmigen Spiegel (80) senkrecht zu jeder LED-Spalte umfassen, um eine im Wesentlichen gesamte und weiche Bearbeitung der Lichtstrahlen der LEDs durchzuführen, was den Erhalt einer im Wesentlichen homogenen Leuchtdichte über die gesamte Fläche des am Boden beleuchteten Bereichs ermöglicht.
  2. LED-Beleuchtungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Platte (62), welche die Konzentrationsmittel (56) bildet, auf einer ihrer den LEDs gegenüberliegenden Seiten Wellen aufweist, deren Scheitel oberhalb der LED-Spalten angeordnet sind.
  3. LED-Beleuchtungsvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass einige LED-Spalten (32) einen Krummungsradius aufweisen.
  4. LED-Beleuchtungsvorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die LEDs in im Wesentlichen geradlinigen Reihen (28), die zu einer ersten Achse (30), welche der Richtung der größten Abmessung des am Boden beleuchteten Bereichs entspriclnt, parallel verlaufen, und in Spalten (32), die zu einer zu der ersten Achse (30) im Wesentlichen senkrechten Mittelachse (34) symmetrisch sind, angeordnet sind, wobei einige Spalten (32), die einen Krümmungsradius aufweisen, dazu neigen, die LEDs in dem Maße ihrer Entfernung von der ersten Achse (30) von der Mittelachse (34) zu entfernen.
  5. LED-Beleuchtungsvorrichtung nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass die Brechungsmittel (76) eine Wand (82) umfassen, deren Material ermöglicht, die Lichtstrahlen zu übertragen und die im Bereich ihrer Innen- und Außenseiten, gegenüber den LEDs, versetzte Flächen nach Art einer Fresnel-Linse aufweist, die einen Krümmungsradius haben, der im Wesentlichen dem Krümmungsradius der LED-Spalten (32) entspricht.
  6. LED-Beleuchtungsvorrichtung nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass die Brechungsmittel (76) eine Wand (82) umfassen, deren Material ermöglicht, die Lichtstrahlen zu übertragen und die im Bereich ihrer Innenseite, gegenüber den LEDs, Wellen (84) aufweist, deren Krümmungsradius angepasst ist, damit die empfangenen Strahlen einen Einfallwinkel null oder sehr geringen Einfallwinkel aufweisen, damit die Strahlen nicht durch die Fläche reflektiert werden.
  7. LED-Beleuchtungsvorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass die Wand (82) auch im Bereich ihrer nach außen gerichteten Fläche Wellen aufweist.
  8. LED-Beleuchtungsvorrichtung nach einem der Anspruche 1 bis 7, dadurch gekennzeichnet, dass sie Mittel (46) zur Erzeugung eines erzwungenen Luftstroms umfasst.
  9. LED-Beleuchtungsvorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Mittel zum Ableiten der Wärme (44) Rippen umfassen, die an der Oberseite der Platte (48) des Tragblocks (22) angebracht sind.
  10. LED-Beleuchtungsvorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Tragblock (22) vor und nach der Aufnahme (36) Öffnungen aufweist, die Rippen umfassen, welche in Längsrichtung angeordnet sind, an der Unterseite der Platte (48) angebracht sind und die Platte (48) und die vor- und nachgeordneten Seitenwände (38) der Aufnahme (36) verbinden.
  11. LED-Beleuchtungsvorrichtung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass sie Mittel (42) zum Leiten der Wärme umfasst, die zwischen der Tragplatte (20) und dem Tragblock (22) eingefügt sind.
EP08775672A 2007-03-08 2008-03-04 Led-beleuchtungsvorrichtung Not-in-force EP2129963B1 (de)

Priority Applications (1)

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PL08775672T PL2129963T3 (pl) 2007-03-08 2008-03-04 Urządzenie oświetlające z diodami LED

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0753708A FR2913484B1 (fr) 2007-03-08 2007-03-08 Dispositif d'eclairage a led
FR0753707A FR2913483B1 (fr) 2007-03-08 2007-03-08 Dispositif d'eclairage a led
PCT/FR2008/050369 WO2008125772A1 (fr) 2007-03-08 2008-03-04 Dispositif d'eclairage a led

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EP2129963A1 EP2129963A1 (de) 2009-12-09
EP2129963B1 true EP2129963B1 (de) 2011-11-30

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EP2149743A1 (de) * 2008-07-31 2010-02-03 Roberto Bellu LED-Leuchtapparat mit hoher Leistungsfähigkeit
ES2345477B1 (es) * 2009-03-17 2011-09-23 Fediel System, S.L. Dispositivo optico para lampara de luminaria con led.
EP2230444B1 (de) * 2009-03-17 2012-05-23 Thorn Europhane S.A. Beleuchtungseinheit und Straßenleuchte und/oder Straßenbeleuchtung
CN102052591A (zh) * 2009-11-05 2011-05-11 富士迈半导体精密工业（上海）有限公司 固态照明灯具
IT1398450B1 (it) * 2010-01-27 2013-02-22 Beghelli Spa Dispositivo di illuminazione pubblica ad alta efficienza energetica
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FR2958997B1 (fr) * 2010-04-15 2012-07-06 Force Et Lumiere Electr Soc D Composant et agencement optiques pour un dispositif d'eclairage, en particulier une lanterne de candelabre
EP2405184B1 (de) 2010-07-07 2018-12-19 LG Innotek Co., Ltd. Straßenlampe
EP2447598A1 (de) * 2010-10-26 2012-05-02 Chiu-Min Lin LED-Straßenlampe
CN107255258A (zh) 2011-07-11 2017-10-17 格莱特有限公司 Led***以及与卤素灯具一起使用的外壳
RU2480670C2 (ru) * 2011-07-19 2013-04-27 Закрытое Акционерное Общество "Кб "Света-Лед" Закрепляемый на кронштейне светильник
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EP2748517B2 (de) 2011-12-23 2024-04-17 Signify Holding B.V. Aussenleuchte
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ATE535757T1 (de) 2011-12-15
ES2378427T3 (es) 2012-04-12
EP2129963A1 (de) 2009-12-09
WO2008125772A1 (fr) 2008-10-23

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