EP2553317B1 - Dispositif d'éclairage à modules led - Google Patents

Dispositif d'éclairage à modules led Download PDF

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Publication number
EP2553317B1
EP2553317B1 EP11711040.3A EP11711040A EP2553317B1 EP 2553317 B1 EP2553317 B1 EP 2553317B1 EP 11711040 A EP11711040 A EP 11711040A EP 2553317 B1 EP2553317 B1 EP 2553317B1
Authority
EP
European Patent Office
Prior art keywords
led
plane
leds
maxima
luminaire according
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
EP11711040.3A
Other languages
German (de)
English (en)
Other versions
EP2553317A1 (fr
Inventor
Janusz Teklak
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.)
Siteco GmbH
Original Assignee
Siteco Beleuchtungstechnik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siteco Beleuchtungstechnik GmbH filed Critical Siteco Beleuchtungstechnik GmbH
Publication of EP2553317A1 publication Critical patent/EP2553317A1/fr
Application granted granted Critical
Publication of EP2553317B1 publication Critical patent/EP2553317B1/fr
Active legal-status Critical Current
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Classifications

    • 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
    • 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
    • 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
    • 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
    • F21V7/05—Optical design plane
    • 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
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10—Outdoor lighting
    • F21W2131/103—Outdoor lighting of streets or roads
    • 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
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
    • F21Y2107/50—Light sources with three-dimensionally disposed light-generating elements on planar substrates or supports, but arranged in different planes or with differing orientation, e.g. on plate-shaped supports with steps on which light-generating elements are mounted
    • 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
    • F21Y2113/00—Combination of light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the invention relates to lights, in particular street or path lights for outdoor use, which have a plurality of LED modules.
  • LEDs as light sources
  • a plurality of LEDs is provided, which must be arranged to achieve a desired light distribution in the luminaire and optionally provided with reflectors.
  • a street lamp which comprises LEDs as light sources, is from the document WO 2006/060905 A1 known.
  • the LEDs are arranged in several sub-levels, which can be adjusted against each other in order to produce different light distributions can.
  • the DE 10 2008 007 723 A1 discloses a lighting module and a luminaire having a plurality of such lighting modules.
  • Each lighting module has one or more LEDs across which extends a common lens which produces an expanded light distribution.
  • the expanded light is reflected at a reflector having multiple facets.
  • the reflector is preferably located in a beam path of a light intensity maximum.
  • the object of the present invention is to provide a modular LED luminaire, in particular for outdoor use, which enables the generation of light distributions, which are particularly suitable for street and path lights, with simply designed LED modules.
  • a lamp in particular outdoor lamp, with a light source carrier surface on which a plurality of LED modules are arranged, wherein the LED modules in each case a matrix of a plurality of LEDs ("light emitting diodes", which are also to be understood as “organic light-emitting diodes” (OLEDs)), which are arranged in a plane and have a reflector strip which adjoins an edge of the plane and opposite to the Level is angled, wherein the LEDs each have an integrated optics, which generates in a cross section through the LED perpendicular to the plane two maxima of the light intensity distribution of the respective individual LED, which are laterally deflected relative to the surface normal on the plane by the LED, wherein the Light radiation of the LED is reflected in one of the two maxima of the reflector strip.
  • LEDs in each case a matrix of a plurality of LEDs (“light emitting diodes”, which are also to be understood as “organic light-emitting diodes” (OLEDs)), which are
  • the luminaire according to the invention comprises a luminous means carrier surface, on which LED modules with a comparatively simple construction can be arranged.
  • the LEDs on the modules have an integrated optic which generates two maxima in the light intensity distribution in a vertical cross section through the LED.
  • Such LEDs with optics are also known as "side-emitting LED".
  • these LEDs have the disadvantage for the applications in street lamps, that they each produce a completely symmetrical light distributions, so that the combination of several such LEDs are not to form asymmetric light distribution curves, as they are needed to illuminate roads or roads ,
  • the two maxima of the light distribution are formed differently strongly in two cross sections (along a major diameter and a minor diameter of the oval).
  • this asymmetry is not sufficient to produce any desired overall light distribution of the lamp by arranging the LEDs.
  • the solution according to the invention provides modules which have a reflector strip arranged laterally to an LED matrix in a plane, which asymmetrically transforms the emission characteristic of the individual modules. Due to the asymmetrically radiating LED modules and the possibility of freely arranging the LED modules on a light source carrier surface within the luminaire, a large variation of suitable total light distributions can be produced. Particularly noteworthy is that the LED modules have a simple design. Complicated reflector structures are not necessary in the invention.
  • the integrated optics provide for a deflection of the maxima of the luminous intensity distribution curve of the individual LED in the cross section perpendicular through the LED relative to the surface normal on the plane through the LED by at least 10 °, preferably at least 20 ° or 30 °.
  • This lateral deflection relative to the surface normal in conjunction with the laterally arranged reflector strip already sufficient to provide an LED module, which has a significant asymmetry in the light emission, so that by the arrangement of the LED modules a desired (asymmetric) overall light distribution of the lamp can be achieved.
  • the individual LEDs with integrated optics have an oval or circular emission characteristic relative to the surface normal of the plane through the LEDs.
  • This radiation characteristic can be generated by a relatively simple optics directly to the LED.
  • the oval radiation characteristic also has the advantage that the LEDs with the longer axis of the oval can be arranged transversely to the reflector strip. As a result, a maximum, which has a larger deflection angle to the surface normal through the LEDs on the plane, is directed toward the reflection on the reflector strip, resulting overall in a greater asymmetry of the light distribution of the individual module.
  • the LEDs may also be preferable to arrange the LEDs with an oval light distribution such that the main axis of the oval has an angle of ⁇ 5 ° with respect to the cross-sectional plane perpendicular to the reflector strip.
  • the light distribution which is generated by an LED module, something uniform.
  • the reflector strips with the plane in which the LED matrix is arranged an angle between 65 ° and 115 °, preferably between 80 ° and 100 °, more preferably about 90 °, a.
  • An approximately rectangular arrangement of the reflector strip to the plane of the LED matrix has the advantage that the light distribution of an LED having in a cross section perpendicular to the plane and perpendicular to the reflector strip two maxima inclined ⁇ ⁇ from the surface normal after reflection on the reflector strip is deflected to one side.
  • the reflector strip is arranged at 90 ° with respect to the plane of the LED matrix, the maximum of the luminous intensity distribution curve, which points towards the reflector strip, after reflection on the reflector strip in the same direction (only offset in parallel), as the symmetrical Maximum on the opposite side the LED.
  • both maxima of the light distribution add up and produce a particularly strongly asymmetrical light distribution.
  • the planes of the LED modules form an angle other than 0 ° relative to the illuminant carrier surface, preferably an angle between ⁇ 5 ° and ⁇ 40 °. This tendency can be exploited to align the LED modules, for example, in different rows or columns, different from each other, thereby achieving a desired overall light distribution of the lamp.
  • the LED modules are arranged in parallel within rows on the illuminant carrier surface.
  • a row on the illuminant carrier surface generates a maximum of the total luminous intensity distribution of the luminaire in the direction transverse to the longitudinal extent of the row.
  • two such rows of LED modules can be arranged in mirror symmetry, resulting in a total light intensity distribution having two opposite symmetrical maxima.
  • Such a light distribution is suitable for illuminating a longitudinally extending surface, such as e.g. a section of a path or a section of a road over which the luminaire is arranged.
  • At least some of the LED modules are arranged such that the edges at which the reflector strips adjoin the plane are not aligned parallel to one another.
  • a light band buckling means that two maxima of the light distribution do not run on a common axis in a horizontal section through the luminaire, but have an angle other than 180 °, e.g. an angle between 140 ° or 170 °, to each other.
  • Such a light distribution is particularly suitable for illuminating a street with a lamp, which is arranged laterally next to the road.
  • the spacing of the LEDs in the planes of the modules is at least 20 mm, preferably between 25 mm and 50 mm. Falling below the distance of less than 20 mm leads to thermal problems, as for outdoor use used high-power LEDs give off a significant amount of heat.
  • the plane of the LED modules can be arranged on a plate of thermally conductive material, for example on an aluminum body. However, if the distance is greater than 50 mm between the LEDs, the luminance that the module can produce decreases. In this case, the modules to achieve a given total light intensity would be too large to be useful in outdoor lighting can be used.
  • Another aspect of the present invention relates to the single LED module as previously described. These modules can be manufactured and distributed as individual parts to be used as a replacement element for lamps of the aforementioned embodiments.
  • the cover may be a clear or light-scattering cover, which is preferably flat.
  • an antireflection coating may be provided on the cover. The antireflection coating may also be designed to provide light scattering by itself.
  • the embodiments of the luminaire comprise a luminous means carrier surface 10, which is planar according to the illustrated embodiments. On the support surface 10, a number of LED modules 20 is arranged.
  • the LED module 20 has a plane 24, which is formed for example of a continuous board.
  • a metal plate is arranged, preferably of aluminum, to serve as a stable support and to provide heat dissipation.
  • a matrix of LEDs 22 is arranged.
  • the LEDs are arranged in a rectangular matrix.
  • a matrix is also understood to mean another regular arrangement of LEDs.
  • the LEDs can be arranged in different rows or columns of the matrix offset from one another.
  • the LED module has a lateral reflector strip 26 which connects at right angles to an edge of the plane 24.
  • the reflector strip 26 is formed on the side facing the LEDs high gloss reflective or matt reflective.
  • a fastening strip 27 is arranged, which has an angle ⁇ with respect to the plane 24, preferably between 5 ° and 40 °.
  • the fastening strip 27 is fastened flat on the illuminant carrier surface 10, so that the plane 24 is inclined relative to the illuminant carrier surface 10 by the angle ⁇ .
  • Each LED 22 has an integrated optics (not visible in the figures), which ensures that each LED in a cross section perpendicular to the plane 24 has at least two maxima in the light distribution, with respect to the surface normal 28 through the LED and on the Level 24 are inclined.
  • FIGS. 6 and 7 shows measurements of light levels of the LED modules without reflector strips 26.
  • FIG. 7 shows in polar representation the light intensity distribution of the LED matrix in three different vertical cutting planes through the LED matrix. It can be seen that two symmetrical maxima are formed in each of the three sectional planes. The strongest maxima are in the 0 ° -180 ° plane at about ⁇ 55 °. In the plane perpendicular thereto, ie the plane 90 ° -270 °, the maxima are less pronounced and are about ⁇ 35 °.
  • the light intensities are plotted in a cone-sheath curve, ie they show a measurement of the light intensity along the edge of a conical surface around the surface normal 28 of the LED matrix.
  • the LEDs of the illustrated embodiment have an oval luminous intensity distribution. Accordingly, the light intensities are distorted in the cone angle curves oval or even have a constriction along the shorter axis.
  • the LEDs 22 and the integrated optics are arranged in the LED module so that the extended maxima (ie the maxima at ⁇ 55 ° in the 0 ° -180 ° plane according to FIG. 7 or the 0 ° -180 ° axis of FIG. 6 ) are aligned in the direction transverse to the reflector strip 26.
  • the directions of the maxima are represented by two light beams. These indicate the position of the maxima in accordance with FIG. 7 a deflection of ⁇ ⁇ relative to the surface normal 28 by the LED 22 on.
  • the right of the two maxima leaves without reflection the LED module with the angle ⁇ relative to the surface normal 28.
  • the left of the two maxima is emitted in the direction of the reflector strips 26 and reflected once.
  • the LED modules 22 generate a strongly asymmetrical light distribution which leaves the LED module at an angle of ⁇ + ⁇ relative to the normal to the illuminant carrier surface 10.
  • the LED modules 22 can be arranged in two rows, within which each LED modules are arranged in parallel, and the two rows are arranged mirror-symmetrically to each other.
  • the LED modules can be arranged with the LEDs facing the reflective sides of the reflector strips 26 against each other (see FIG. 2 ). Both embodiments produce about the same light distribution.
  • These lights are particularly suitable as a path or street light, which is located above the path or road section to be illuminated, because the total light distribution generated can evenly illuminate an elongated surface, ie parallel to the road or to the way.
  • FIGS. 3 and 4 show alternative embodiments intended to produce a light band buckling.
  • the total light distribution of the luminaire produced has no two 180 ° opposite maxima (as in FIG. 6 ), but that the maxima with respect to an axis (corresponding to the 0 ° -180 ° axis in FIG. 6 ) are inclined.
  • Such lights are particularly suitable for illuminating streets by lights that are arranged laterally next to the road.
  • the light band buckling is generated by reflector modules whose longitudinal edges, ie the edge between the plane 24 and the reflector strip 26, extend along a curved curve. Both FIGS. 3 and 4 Accordingly, in particular, each ensure the front six LED modules 22 for Lichtbandknickung.
  • the two rear LED modules mainly illuminate the area under the luminaire.
  • the invention provides that the LED modules can be arranged as desired on the illuminant carrier surface in order to produce desired light distributions.
  • the LED modules could also be arranged in a circle to form a street lamp illuminating a round place or a roundabout from the center. Other forms are also possible.

Landscapes

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

Claims (10)

  1. Luminaire, plus particulièrement luminaire extérieur, avec une surface de support de moyen d'éclairage (10), sur laquelle plusieurs modules LED (20) sont disposés,
    les modules LED (20) comprenant chacun une matrice de plusieurs LED (22), qui sont disposées dans un plan (24), et une bande réfléchissante (26), qui est adjacente à une arête du plan (24) et qui est pliée par rapport au plan (24),
    caractérisé en ce que les LED (22) comprennent chacune une optique intégrée, qui génère dans une section transversale à travers les LED (22), perpendiculairement au plan (24), deux maxima de répartition d'intensité lumineuse des différentes LED (22), qui sont déviés latéralement par rapport à la normale de la surface (28) sur le plan (24) à travers les LED (22), l'émission de lumière des LED (22) étant réfléchie dans un des deux maxima par la bande réfléchissante (26).
  2. Luminaire selon la revendication 1, l'optique intégrée provoquant une déviation des maxima de la courbe de répartition d'intensité lumineuse des différentes LED dans ladite section transversale par rapport à la normale de la surface d'un angle γ d'au moins ±10°, de préférence d'au moins ±20° ou ±30°.
  3. Luminaire selon l'une des revendications précédentes, les différentes LED (22) avec optique intégrée présentant une caractéristique d'émission ovale ou circulaire par rapport à la normale de la surface (28) du plan (24) à travers les LED (22).
  4. Luminaire selon l'une des revendications précédentes, moyennant quoi, dans les modules LED, les bandes réfléchissantes (26) forment, avec le plan (24), un angle de 65° à 115°, de préférence entre 85° et 95°.
  5. Luminaire selon l'une des revendications précédentes, les plans (24) des modules LED (20) formant, par rapport à la surface de support de moyens d'éclairage (10), un angle α différent de 0°, de préférence un angle α entre 5° et 40° ou entre -5° et -40°.
  6. Luminaire selon l'une des revendications précédentes, les modules LED (20) étant disposés parallèlement entre eux sur au moins une rangée sur la surface de support de moyens d'éclairage (10).
  7. Luminaire selon la revendication 6, au moins deux rangées de modules LED (20) étant disposés avec une symétrie en miroir.
  8. Luminaire selon l'une des revendications précédentes, au moins certains des modules LED (20) étant disposés de façon à ce que les arêtes au niveau desquelles les bandes réfléchissantes (26) sont adjacentes au plan (24), ne soient pas orientées parallèlement entre elles.
  9. Luminaire selon l'une des revendications précédentes, la distance entre les LED (22) dans la matrice avec la LED (22) la plus proche est d'au moins 20 mm, de préférence entre 25 mm et 50 mm.
  10. Module LED (20) pour le montage sur une surface de support de moyens d'éclairage (10) d'un luminaire selon l'une des revendications précédentes, le module LED (20) comprenant une matrice de plusieurs LED (22), qui sont disposées dans un plan (24), et un bande réfléchissante (26), qui est adjacente à une arête du plan (24) et qui est pliée par rapport au plan, caractérisé en ce que les LED (22) comprennent chacune une optique intégrée qui dans une section transversale, perpendiculairement au plan (24), deux maxima de répartition d'intensité lumineuse des différentes LED (22), qui sont déviés latéralement par rapport à la normale de la surface (28) sur le plan (24) à travers les LED (22), l'émission de lumière des LED (22) étant réfléchie dans un des deux maxima par la bande réfléchissante (26).
EP11711040.3A 2010-04-01 2011-03-23 Dispositif d'éclairage à modules led Active EP2553317B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010013678 2010-04-01
DE102010021452A DE102010021452A1 (de) 2010-04-01 2010-05-25 Leuchte mit LED-Modulen
PCT/EP2011/001452 WO2011120652A1 (fr) 2010-04-01 2011-03-23 Dispositif d'éclairage à modules led

Publications (2)

Publication Number Publication Date
EP2553317A1 EP2553317A1 (fr) 2013-02-06
EP2553317B1 true EP2553317B1 (fr) 2019-05-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP11711040.3A Active EP2553317B1 (fr) 2010-04-01 2011-03-23 Dispositif d'éclairage à modules led

Country Status (5)

Country Link
US (1) US8814384B2 (fr)
EP (1) EP2553317B1 (fr)
CN (1) CN102869919A (fr)
DE (1) DE102010021452A1 (fr)
WO (1) WO2011120652A1 (fr)

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WO2015100201A1 (fr) * 2013-12-24 2015-07-02 Amerlux Llc Systèmes et procédés de rattrapage de systèmes d'éclairage existants
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Also Published As

Publication number Publication date
CN102869919A (zh) 2013-01-09
US8814384B2 (en) 2014-08-26
EP2553317A1 (fr) 2013-02-06
DE102010021452A1 (de) 2011-10-06
US20130229803A1 (en) 2013-09-05
WO2011120652A1 (fr) 2011-10-06

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