EP2249076A1 - Eclairage de route doté de sources lumineuses sous forme de points, notamment lampe à DEL - Google Patents

Eclairage de route doté de sources lumineuses sous forme de points, notamment lampe à DEL Download PDF

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Publication number
EP2249076A1
EP2249076A1 EP20100004705 EP10004705A EP2249076A1 EP 2249076 A1 EP2249076 A1 EP 2249076A1 EP 20100004705 EP20100004705 EP 20100004705 EP 10004705 A EP10004705 A EP 10004705A EP 2249076 A1 EP2249076 A1 EP 2249076A1
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EP
European Patent Office
Prior art keywords
light
plane
light sources
luminaire according
luminaire
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.)
Withdrawn
Application number
EP20100004705
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German (de)
English (en)
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 EP2249076A1 publication Critical patent/EP2249076A1/fr
Withdrawn legal-status Critical Current

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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
    • F21V5/00—Refractors for light sources
    • F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing light
    • 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
    • F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • 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
    • F21W2131/101—Outdoor lighting of tunnels or the like, e.g. under bridges
    • 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
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to luminaires for lighting purposes indoors or outdoors, in particular street lights for the illumination of tunnels, with a plurality of punctiform light sources, which may be formed in particular of light emitting diodes (LEDs).
  • LEDs light emitting diodes
  • LEDs as light sources
  • a plurality of LEDs is provided.
  • the LEDs are arranged on a correspondingly shaped surface or the light of the LEDs is deflected by optical means.
  • relatively wide-beam lights are desired for illuminating streets.
  • FIG EP 1 498 656 A2 An example of a lighting device made of LEDs, which is set up as tunnel lighting, is in FIG EP 1 498 656 A2 disclosed.
  • This tunnel light has a plurality of LEDs arranged one behind the other in one direction.
  • each light-emitting diode is assigned a scattering lens.
  • a disadvantage of such luminaires is that a viewer of the luminaire, e.g. a motorist approaching the lamp along the road is blinded at certain distances from the lamp, each corresponding to a certain angle of view of the lamp, by the plurality of punctiform light sources with very high luminance.
  • the invention solves the problem by a luminaire with a plurality of punk-shaped light sources, in particular LEDs, which are arranged in a plane, wherein the light sources each have a hemispherical emission characteristic which is perpendicular in a sectional plane to said plane has at least a maximum in the light intensity along a direction which is inclined relative to the mid-perpendicular on the plane by a non-zero angle ⁇ , as well as with a light-scattering plate arranged at a distance to the plane.
  • a wide-beam light distribution which is particularly suitable for illuminating a road, in particular a tunnel, is produced in that the main maximum of the luminous intensity is not emitted downwards, but in a vertical sectional plane through the luminaire (C-plane). inclined at an angle to the mid-perpendicular of the luminaire.
  • a motorist would perceive the variety of punctiform bulbs, depending on the angle of view to the lamp, as dazzling, because the individual points of light with very high luminance are resolved separately by the viewer and at a viewing angle of the lamp, which corresponds to the angle ⁇ , blind him directly.
  • this glare is prevented by arranging a light-scattering plate at a defined distance from the point-shaped light-emitting means.
  • the light-diffusing plate By the light-diffusing plate, a luminance reduction for the individual point-like light sources is achieved, because the effective emission area, which generates each of the point-like light sources in the plane of the light-diffusing plate, increases compared to the emission surface of the point-like light source itself by the defined distance of the light-scattering plate is. In general, it is a circular or elliptical radiating surfaces, which are generated in the light-scattering plate of the light sources.
  • the driver no longer perceives the punk-shaped light sources as a dazzling point because he only sees the punctiform light sources as luminous circular areas or ellipses with a correspondingly reduced luminance. Due to the defined distance of the light-scattering plate to the punctiform light source, the radiation characteristic of the individual semispherical radiation characteristic punctiform light sources is not completely resolved, so that the desired light distribution of the overall light, for the uniform illumination of a road section, still guaranteed.
  • a preferred distance between the plane of the point-shaped light sources and the light-diffusing plate is at least 10 mm, preferably between 30 mm and 50 mm. Preferably, a maximum distance of about 70 mm is not exceeded.
  • the light diffusing plate not only effectively increases the emission area of the point light sources, but at the same time increases the halfway angle defining the width of the at least one maximum in the light distribution curve of the luminaire (i.e., the maximum is broadened in the luminous intensity distribution curve).
  • the position of one maximum i.e., the angle ⁇
  • the distance between the plane in which the punk-shaped light sources are arranged and the light-diffusing plate is constant over the entire plane.
  • the light-scattering plate is wedge-shaped with respect to the plane in which the point-shaped light sources are arranged.
  • the distances between the point light sources and the light diffusing plate can be adjusted according to the asymmetry of the semi-spherical radiation characteristic of the light sources, particularly with respect to the angle ⁇ of a single maximum.
  • point-shaped light sources with symmetrical hemispherical radiation characteristic can be achieved by the wedge-shaped inclination of the plane of the light sources with respect to the light-scattering plate Lichtbandknickung.
  • the angle ⁇ which defines the position of the maximum with respect to the mid-perpendicular of the luminaire in the C-plane, is always greater than or equal to 45 ° for each one of the light sources. This also achieves a maximum in the luminous intensity distribution of the entire luminaire at an angle ⁇ of more than 45 °.
  • the intensity value of each of the point-shaped light sources in the maximum is at least twice as large as the intensity value along the perpendicular bisector.
  • the light distribution curve of the entire luminaire may have a minimum in the direction of the mid-perpendicular.
  • the punctiform light sources each have two maxima, preferably two identical maxima, which are arranged symmetrically with respect to the mid-perpendicular in said sectional plane with angles of ⁇ ⁇ .
  • This embodiment of the luminaire is advantageously suitable for illuminating a longitudinally extending straight roadway, in particular in tunnels.
  • the use of LEDs as light sources reduces the energy requirements for the luminaires and extends the maintenance intervals of the luminaire.
  • a preferred angle ⁇ is greater than or equal to 45 °.
  • each punctiform light source is assigned in each case a lens and / or a reflector.
  • These optical means can produce the semi-spherical radiation characteristic of the point light sources as previously defined.
  • the point-shaped light sources in the plane are arranged in a regular structure, in particular in a matrix. It is of particular advantage if the point-shaped light sources are all identical, if necessary including their associated lenses or reflectors. This lamp can not only be produced inexpensively.
  • the point-shaped light sources are arranged at a distance of at least 20 mm, preferably between 25 mm and 50 mm, in the plane.
  • the point-shaped light sources in particular LEDs, can be sufficiently cooled.
  • the plane on which the LEDs are mounted may be defined by the surface of a lamp body, which may be formed of a thermally conductive material, such as aluminum.
  • only one plane is provided, which is occupied by the plurality of point light sources.
  • the distances between each one plane and the light-diffusing plate can change continuously in one direction.
  • an angle between the plane and the light-diffusing plate is included in each case, which may also be constant according to a preferred embodiment.
  • This embodiment is suitable, for example, for a luminaire, which is arranged on the side of an object to be illuminated, such as a road or tunnel section.
  • the main emission direction of the luminaire in the direction of the object to be illuminated can be determined.
  • a road surface can be illuminated by the lamp according to the invention, which is arranged next to the lamp.
  • the use of multiple levels is to dispose the plurality of point light sources particularly preferred, because thereby the height of the lamp, given a slope of the planes, compared to an embodiment with only one inclined plane can be reduced.
  • the luminaire is designed as a street lamp, in particular for mounting on a tunnel ceiling or a tunnel side wall.
  • FIG. 1 A side perspective view of an embodiment of a luminaire is shown schematically in FIG FIG. 1 shown, to illustrate the technical details, the side parts of the housing are not shown.
  • the luminaire comprises as a luminous means a plurality of LEDs 2, which are arranged in a plane 4 on the surface of a luminaire body 6.
  • the LEDs 2 are arranged in a regular matrix, wherein the distances between the LEDs 2 along rows 8 arranged in parallel are constant. Furthermore, the distance between the rows 8 is constant.
  • the distances of the LEDs within a row 8 and between the rows 8 have a value between 30 mm and 40 mm.
  • the level 4 may be formed from one or more boards, wherein the LEDs 2 are each electrically contacted in several rows together.
  • the electrical connections are housed in the lamp body 6 (not shown).
  • the LEDs are mounted in a row 8 each on a common strip-shaped board, which can be replaced in one piece for maintenance purposes.
  • the board 8, and preferably also the intermediate areas in the plane 4 are formed of a thermally conductive material, so that the heat generated during operation of the LEDs can be dissipated through the lamp body 6.
  • the above-mentioned distances of the LEDs 2 are advantageous because the available area is sufficient to dissipate the heat to the ambient air.
  • the LEDs 2 form punctiform light sources, because the luminous area of the chip, on which the LED is located, is very small compared to the dimensions of the total luminaire. When looking directly at the LEDs, the viewer perceives the light source as punctiform because the eye is unable to resolve the luminous surface.
  • the light-scattering plate 12 is, for example, a glass plate which has a transmittance of 89.1%, preferably 91.7%, and more (measured according to DIN 5036 Part 3 or ISO 5740-1982 or CIE Publication No. 38 ). The proportion of scattered transmission is between 87.1% to 90.7%, which corresponds to 98% to 99% of the total transmittance.
  • a surface of the plate 12 (preferably the side facing the light sources) may be provided with regular or irregular elevations or depressions.
  • the feature size, i. the mean dimension of the protrusions or depressions is preferably less than 3 mm.
  • the material of the plate 12 or the surface of the plate 12 may have a haze.
  • the light-diffusing plate 12 acts in the described lamp as a luminance integrator, as shown in FIG. 1a becomes clear, which schematically shows a cross section through the lamp in the region of a single LED 2.
  • the distances in the FIG. 1 are not shown to scale. In particular, the distance D between the LED 2 and the light-diffusing plate 12 is larger.
  • the LED 2 is associated with a reflector 14 and a lens 16 which define the semispherical radiation characteristic of the LED 2.
  • the Abstrahl characterizing is shown as a cone sheath with dashed lines. Without the light scattering plate 12, a viewer would see the light source as a single small luminous surface perceive which is effectively determined by the size of the lens diameter 16 and the light exit opening of the reflector 14.
  • the light-diffusing plate 12 By arranging the light-diffusing plate 12 at the distance D in front of the light-emitting surface of the LED 2, the luminous area of the LED 2 perceived by the viewer is increased, thereby reducing the luminance of the radiating surface on the light-diffusing plate generated by a single light source.
  • the distance D determines the reduction of the luminance which an observer perceives on the plate 12 for each individual LED.
  • LVF is the luminance reduction factor
  • ID is the luminous intensity value in the irradiated direction of the observer from the radiating surface of the light diffusing plate acting as luminance integrator
  • I is the luminous intensity value in the irradiated direction of the observer from the light exit surface of the optics associated with the LED
  • d is the distance between the luminous source (from the chip) of the LED to the light emitting surface of the LED optic
  • D is the distance between the LED 2 and the plane 4 and the light diffusing plate 12
  • ⁇ is the half half angle of the light intensity distribution without the application of the light diffusing plate and ⁇ D is half the half-beam angle of the light intensity distribution application with the light-diffusing plate.
  • FIG. 3 is to illustrate the half-beam angle of the light intensity distribution with and without light scattering plate (integrator) a luminous intensity distribution curve of the luminaire in a vertical sectional plane perpendicular through the plane 4 of the light represented.
  • the dashed line shows the light intensity distribution, which results without light-diffusing plate 12, while the solid line represents the light intensity distribution with light-diffusing plate 12.
  • the Height of the maxima of the two curves in the diagram of FIG. 3 is normalized to a better overview to the same value.
  • each individual light source results in a deviating from the Lambert Verieilung light intensity distribution of the luminaire, as shown as a dashed line in FIG. 3 is shown.
  • the direction of 0 ° corresponds to the mid-perpendicular on the plane 4.
  • Due to the light-scattering plate the half-width of the maxima is increased from 2 ⁇ to 2 ⁇ D.
  • the position of the maxima shifts from about ⁇ 58 ° to ⁇ 55 °, respectively on both sides of the mid-perpendicular within the indicated C-plane.
  • the maximum luminance can be set to an acceptable value for a specified angle.
  • FIG. 2 A luminous intensity measurement of the light distribution curve for three different C-planes is in FIG. 2 shown.
  • the C-levels of the luminaire correspond to vertical planes of intersection through the level 4.
  • the representation for the C180 ° -0 ° -square corresponds to the representation after FIG. 3 , In the C270 ° -90 ° plane, the light intensity distribution is much narrower, as indicated by the dot-dash line in FIG. 2 is shown. If the luminaire with the C180 ° -0 ° plane is arranged along the carriageway, the carriageway can therefore be uniformly illuminated over a length section.
  • FIG. 4 shows the corresponding cone envelope curves of the light intensity distribution for four different cone angles in a polar representation.
  • the light intensity measurement is carried out in a circle around the perpendicular bisector, for different radii, each corresponding to an opening angle of a cone sheath. From this representation, it is also clear that the light in an advantageous manner for illuminating a road surface in the longitudinal direction (0 ° -180 ° axis of FIG. 4 ) is suitable.
  • the optics of the LEDs may also produce an asymmetrical light distribution of each individual LED. These can also be arranged rotated to each other. As a result, it is possible, for example, to generate a light band buckling, which occurs in the cone envelope curve according to FIG. 4 as an asymmetric curve with respect to the 0 ° -180 ° axis. Such lights are suitable for example for illuminating a curved section of a roadway or for illuminating the roadway from a position laterally of the roadway edge.
  • the light band buckling is generated in that the light-scattering plate 12 is wedge-shaped with respect to the planes 4 of the point-shaped light sources.
  • the punctiform light sources may have a symmetrical light beam characteristic with respect to the 0 ° -180 ° axis.
  • the inclination of the plane 4 with respect to the plate 12 may, for example, between 5 ° and 25 ° are preferably about 15 °.
  • this lamp has a plurality of levels 4 ', 4 "and 4"', which are each inclined at an angle between 5 ° and 25 °, preferably between 15 ° to 20 °, with respect to the light-scattering plate 12 .
  • Each of the levels 4 ', 4 ", 4"' has a plurality of LEDs 2, as described in the previous embodiments with only one level 4.
  • the lamp is designed as a street lamp, which can be arranged at the lateral edge of the road, wherein the LED levels 4 ', 4 "and 4'" are aligned inclined towards the road. With this inclination, the light in the direction of the road to illuminate a road surface outside the vertical direction, in which the lamp is mounted, for example, on a mast, align.
  • the multiple LED levels 4 ', 4 "and 4"' each have the same angle of inclination relative to the light-scattering plate 12. This has the advantage that the height of the lamp, compared to a luminaire with only one level 4, which has the same angle of inclination, does not need to grow unnecessarily.
  • the lights between two and five planes, each with the same inclination angle or different inclination angles between 0 ° and 25 ° relative to the light-diffusing plate 12, on.
  • the light In addition to the LED levels 4 ', 4 "and 4"' are reflector elements, in particular mirror elements 18, mounted, the light, because of the inclination of the LED levels 4 ', 4 ", 4"' partially laterally of the levels within the Luminaire housing is radiated, are directed back to the object to be illuminated.
  • These mirror elements can be arranged at an angle between 90 ° to 120 ° (corresponding to a light incidence angle between 0 ° to 30 °) to the main emission direction of the LEDs.
  • the lamp according to the FIGS. 5 and 6 is designed as a lamp for attachment to a lamppost, especially for outdoor use.
  • a light carrier 20 which is designed in particular for mounting on a lamp post, provided on a lamp housing 22.
  • the inclination of the LED levels 4 ', 4 "and 4"' with respect to the plate 12 is for all levels 4 ', 4 ", 4"' in a common sectional plane (image plane of FIG. 5 ), which runs vertically through the lamp and the light carrier 20 intersects.
  • the inclination of the LED levels 4 ', 4 "and 4'" lies in a common sectional plane, which is 90 ° with respect to the vertical sectional plane of the luminaire , which cuts the light carrier 20, is rotated.
  • two lights can be mounted on opposite sides of a common light pole. Said embodiment with two lights on a lamppost has the advantage that on the object to be illuminated, such as the road surface, a higher luminance can be achieved.
  • symmetric or asymmetric reflectors and / or lenses for the LEDs 2 may be provided to produce different light distributions.
  • a symmetrical light intensity distribution along an axis of symmetry a symmetrical light intensity distribution in two axes of symmetry, as in FIGS. 2 to 5 represented, and a rotationally symmetrical light intensity distribution preferred.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP20100004705 2009-05-05 2010-05-04 Eclairage de route doté de sources lumineuses sous forme de points, notamment lampe à DEL Withdrawn EP2249076A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009019997 2009-05-05
DE102010004221A DE102010004221A1 (de) 2009-05-05 2010-01-08 Straßenleuchte mit punktförmigen Lichtquellen, insbesondere LED-Leuchte

Publications (1)

Publication Number Publication Date
EP2249076A1 true EP2249076A1 (fr) 2010-11-10

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EP20100004705 Withdrawn EP2249076A1 (fr) 2009-05-05 2010-05-04 Eclairage de route doté de sources lumineuses sous forme de points, notamment lampe à DEL

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202013103401U1 (de) 2013-07-29 2013-08-16 Stührenberg GmbH Elektrobau-Signaltechnik Freiformoptik für LED-Straßenleuchten
NL1042881B1 (en) * 2018-05-25 2019-12-02 Stogger Bv Lighting device.

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012152257A2 (fr) 2011-05-10 2012-11-15 Jenoptik Polymer Systems Gmbh Lampe à led pour l'éclairage de surfaces spécifiques
DE102011079393A1 (de) 2011-07-19 2013-01-24 Zumtobel Lighting Gmbh Anordnung zur Lichtabgabe
CN103748407A (zh) 2011-08-21 2014-04-23 业纳聚合物系统有限公司 带有包括菲涅耳透镜和呈蜂窝状布置的非球面透镜的透镜系统的led灯
DE202012008668U1 (de) 2012-09-04 2012-11-08 Jenoptik Polymer Systems Gmbh LED-Leuchte

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WO2003071182A1 (fr) * 2002-02-21 2003-08-28 Koninklijke Philips Electronics N.V. Luminaire et procede de reparation d'un luminaire
US20040218388A1 (en) * 2003-03-31 2004-11-04 Fujitsu Display Technologies Corporation Surface lighting device and liquid crystal display device using the same
EP1498656A2 (fr) 2003-07-14 2005-01-19 Elektro Pro Light KG des Bergmeister Markus & Co. Dispositif d'éclairage, en particulier pour tunnels
WO2006060905A1 (fr) * 2004-12-07 2006-06-15 Elumen Lighting Networks Inc. Ensemble de diodes électroluminescentes pour applications d’éclairage
US20060138437A1 (en) * 2004-12-29 2006-06-29 Tien-Fu Huang Lens and LED using the lens to achieve homogeneous illumination
DE202006010949U1 (de) * 2006-07-14 2006-09-07 Chen, Chia-Yi, Donggang Leuchte
US20070201225A1 (en) * 2006-02-27 2007-08-30 Illumination Management Systems LED device for wide beam generation
JP2008204659A (ja) * 2007-02-16 2008-09-04 Toshiba Elevator Co Ltd 照明装置
WO2008122941A1 (fr) * 2007-04-05 2008-10-16 Koninklijke Philips Electronics N.V. Dispositif de mise en forme de faisceaux lumineux
CN201196351Y (zh) * 2008-04-11 2009-02-18 史杰 大功率led路灯灯头
CN201206760Y (zh) * 2008-05-22 2009-03-11 保定市大正太阳能光电设备制造有限公司 一体化led灯头

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003071182A1 (fr) * 2002-02-21 2003-08-28 Koninklijke Philips Electronics N.V. Luminaire et procede de reparation d'un luminaire
US20040218388A1 (en) * 2003-03-31 2004-11-04 Fujitsu Display Technologies Corporation Surface lighting device and liquid crystal display device using the same
EP1498656A2 (fr) 2003-07-14 2005-01-19 Elektro Pro Light KG des Bergmeister Markus & Co. Dispositif d'éclairage, en particulier pour tunnels
WO2006060905A1 (fr) * 2004-12-07 2006-06-15 Elumen Lighting Networks Inc. Ensemble de diodes électroluminescentes pour applications d’éclairage
US20060138437A1 (en) * 2004-12-29 2006-06-29 Tien-Fu Huang Lens and LED using the lens to achieve homogeneous illumination
US20070201225A1 (en) * 2006-02-27 2007-08-30 Illumination Management Systems LED device for wide beam generation
DE202006010949U1 (de) * 2006-07-14 2006-09-07 Chen, Chia-Yi, Donggang Leuchte
JP2008204659A (ja) * 2007-02-16 2008-09-04 Toshiba Elevator Co Ltd 照明装置
WO2008122941A1 (fr) * 2007-04-05 2008-10-16 Koninklijke Philips Electronics N.V. Dispositif de mise en forme de faisceaux lumineux
CN201196351Y (zh) * 2008-04-11 2009-02-18 史杰 大功率led路灯灯头
CN201206760Y (zh) * 2008-05-22 2009-03-11 保定市大正太阳能光电设备制造有限公司 一体化led灯头

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202013103401U1 (de) 2013-07-29 2013-08-16 Stührenberg GmbH Elektrobau-Signaltechnik Freiformoptik für LED-Straßenleuchten
NL1042881B1 (en) * 2018-05-25 2019-12-02 Stogger Bv Lighting device.

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