EP2534413A1 - Module d'éclairage pour l'éclairage de voies de circulation et appareil d'éclairage de voies de circulation - Google Patents

Module d'éclairage pour l'éclairage de voies de circulation et appareil d'éclairage de voies de circulation

Info

Publication number
EP2534413A1
EP2534413A1 EP11706774A EP11706774A EP2534413A1 EP 2534413 A1 EP2534413 A1 EP 2534413A1 EP 11706774 A EP11706774 A EP 11706774A EP 11706774 A EP11706774 A EP 11706774A EP 2534413 A1 EP2534413 A1 EP 2534413A1
Authority
EP
European Patent Office
Prior art keywords
light
free
module
lighting
emitting diodes
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Withdrawn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
EP11706774A
Other languages
German (de)
English (en)
Inventor
Ernst Wohlgemuth
Andreas Timinger
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.)
ewo srl/GmbH
Original Assignee
ewo srl/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 ewo srl/GmbH filed Critical ewo srl/GmbH
Publication of EP2534413A1 publication Critical patent/EP2534413A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F21V5/007—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
    • 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
    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/08—Refractors for light sources producing an asymmetric light distribution
    • 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
    • F21V29/75—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with fins or blades having different shapes, thicknesses or spacing
    • 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
    • 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
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • Lighting module for traffic route lighting
  • the invention relates generally to the technical field of traffic route lighting. More particularly, the invention relates to a lighting module for stationary traffic route lighting and a traffic route light in which LEDs serve as light sources.
  • a "traffic route” is understood to mean all public or private traffic areas, for example, roads, cycle and pedestrian paths, pedestrian zones, railway lines, public and private public places, and so on.
  • Lighting modules and traffic lights with LEDs are known per se.
  • WO 2008/137172 A1 shows a lighting module for a traffic route light.
  • the light module has a multiplicity of light-emitting diodes, to each of which a light-shaping element having a refractive optical freeform surface for light-shaping is assigned.
  • a luminaire construction would be desirable, which reduces the glare effect for passers-by and other road users.
  • a first aspect of the invention is based on the basic idea of using a light-shaping element which has a plurality of refractive optical free-form surfaces for light shaping and at least one light-scattering region in the vicinity of the free-form surfaces.
  • the light-scattering area is adapted to emit diffused light during operation of the light module.
  • the effect of additional diffuse light for glare reduction is particularly pronounced if - as provided in some embodiments - the light-shaping element in the region of each free-form surface is clearly formed and in this area no further scattering element in the light module or the traffic route light is provided.
  • Each free-form surface is preferably provided to achieve a desired emission characteristic for the useful light emitted by the light module, which is generally predetermined by relevant standards.
  • a particularly accurate light shaping is achieved by relatively large Free-form surfaces are used, for example, each of which has an area of at least 5 cm 2 or at least 7.5 cm 2 or at least 10 cm 2 . This is particularly advantageous in the context of LED lights, because it would cause high costs here, if the light sources would have to be oversized to compensate for light distribution errors.
  • not only one light-emitting diode but a group of several light-emitting diodes is provided for each free-form surface.
  • the luminous flux can be increased by each free-form surface, so that less of the relatively complex freeform surfaces are required to obtain a desired total light output.
  • the feature that the light-shaping element has at least one light-scattering region in the vicinity of the free-form surfaces is considered an optional feature, which is advantageous, but not absolutely necessary.
  • the light-emitting diodes of each group can be arranged, for example, mirror-symmetrically with respect to exactly one plane.
  • the light emitting diodes of a group are located at the corners of an isosceles - but not equilateral - triangle.
  • the free-form surfaces can also be designed mirror-symmetrically to exactly one mirror plane each, wherein this plane of symmetry of a free-form surface in some embodiments coincides with the plane of symmetry of the associated light-emitting diode group.
  • the light shaping element has a light entry side and a light emission side.
  • side is not necessarily understood to mean a straight or smooth surface.
  • a second aspect of the invention is based on the basic idea of arranging the lighting modules laterally next to one another in the housing in the case of a traffic route luminaire having a housing and a plurality of lighting modules, in such a manner inclined in a uniform direction that Lichtabstrahlen the lighting modules are arranged in a sawtooth to each other.
  • This refinement provides the technical basis for a traffic route luminaire which, with a relatively simple optical structure, has a main emission direction running obliquely to the housing.
  • Such a traffic route light can be provided, for example, for mounting in the horizontal direction-approximately parallel to a road level. As a result, disturbing stray light can be shielded with little construction effort.
  • the lighting modules of the traffic route lamp according to the second aspect of the invention are constructed like the lighting modules according to the first aspect described above.
  • the lighting modules then have features and combinations of features as described above and / or defined in claims 1 to 11.
  • the feature of a light-scattering region of the light-shaping element is considered as an optional feature that is present in some, but not all, embodiments.
  • instead of a light-shaping element having a plurality of free-form surfaces it is also possible to provide a plurality of light-shaping elements each having at least one free-form surface in such lighting modules.
  • the light modules in the housing are arranged side by side along an array axis, and light emission axes of the light modules are approximately parallel to each other but oblique to the array axis.
  • the angle between the light emission axes of the lighting modules and the arrangement axis is fixed by the design. In some embodiments, this angle may be, for example, between 45 ° to 135 ° or between 60 ° to 120 °, with each of the vertical angle of 90 ° is excluded.
  • a particularly economical embodiment of the traffic route light is obtained by using identical lighting modules.
  • FIG. 1 is an exploded view of a lighting module according to a first embodiment
  • FIG. 1 is a perspective view of the lighting module of Fig. 1,
  • FIG. 3 is a plan view of the lighting module of FIG. 1, wherein the light shaping element faces the viewer,
  • FIG. 4 is a side view of the lighting module of Fig. 1,
  • FIG. 5 shows a longitudinal section through a traffic route light according to a second embodiment, which has a plurality of lighting modules in a housing, and
  • FIG. 6 is a perspective view of the traffic route lamp of FIG. 5th
  • the lighting module 10 shown in FIG. 1 has as main components a light-shaping element 12, a light-emitting diode unit 14 and a cooling body 16 serving as the base.
  • the light emitting diode unit comprises a printed circuit board 18 and a plurality of light emitting diodes 20A, 20B, 20C, 22A, 22B, 22C, 24A, 24B, 24C.
  • the light-emitting diodes 20A-24C are divided in the present embodiment in groups of three, in a first group with the three LEDs 20A, 20B, 20C, a second group with the LEDs 22A, 22B, 22C, and a third group with the light emitting diodes 24A, 24B, 24C. In the following, these groups are collectively referred to as 20x, 22x, 24x.
  • the light-shaping element 12 has a plurality-in the present exemplary embodiment three-refractive optical freeform surfaces 26, 28, 30.
  • the first free-form surface 26 of the first light-emitting diode group 20x is associated optically in the sense that the light emitted by the light-emitting diode group 20x passes through the light-shaping element 12 largely in the region of the first free-form surface 26.
  • the first free-form surface 26 thus serves for light shaping for a predominant part of that light which is emitted by the first light-emitting diode group 20x in the direction of the light-shaping element 12.
  • the second free-form surface 28 is assigned to the second light-emitting diode group 22x
  • the third free-form surface 30 is assigned to the third light-emitting diode group 24x.
  • each free-form surface 26, 28, 30 forms the light of the respective associated light-emitting diode group 20x, 22x, 24x corresponding to the desired emission characteristic.
  • this radiation characteristic depends on a traffic route light in order to achieve an overall light distribution of the traffic route light, which is predetermined by relevant standards.
  • free-form surfaces instead of conventional spherical or aspherical lenses in the light-shaping element 12, the desired emission characteristic can be achieved very precisely and with only low light losses. This applies in particular to the relatively large free-form surfaces 26, 28, 30 of the present exemplary embodiments, which, for example, each have an optically effective surface with a content of at least 5 cm 2 .
  • the light-shaping element 12 is clearly formed in the region of the free-form surfaces 26, 28, 30 in order to allow light shaping with maximum accuracy.
  • the light-shaping element 12 has a light-scattering region 32 which emits diffused light during operation of the light-emitting module 10.
  • the light-scattering region 32 occupies the entire available surface between the free-form surfaces 26, 28, 30 and an outer frame 34 of the light-shaping element 12, but at some points the free-form surfaces 26, 28, 30 are direct-ie without a light scattering area 32 - border the frame 34.
  • the light-scattering region 32 extends uninterruptedly between two free-form surfaces 26, 28 and 28, 30.
  • the light-shaping element 12 may be milky or have a light-scattering coating or a light-scattering surface treatment ,
  • the free-form surfaces 26, 28, 30 are formed on a light emission side 36 of the light-shaping element 12, while the light of the light-emitting diodes 20x, 22x, 24x enters the light shaping element 12 at a light entrance side 38. It is understood that in alternative embodiments, the free-form surfaces 26, 28, 30 may be formed exclusively or additionally on the light entrance side 38, or that additional optically effective surfaces (not necessarily free-form surfaces) may be provided on the light entrance side 38. Further, a light-scattering coating or surface treatment may be provided in the light-diffusing region 32 on the light-emitting side 36, the light-entrance side 38, or both sides.
  • Each free-form surface 26, 28, 30 has a butterfly shape in the exemplary embodiment described here. As can be seen in particular from FIG. 3, each free-form surface 26, 28, 30 is mirror-symmetrical to a transverse axis Q1 of the freeform surface 26, 28, 30. To a longitudinal axis L1 of the freeform surface 26, 28, 30, however, there is neither a mirror nor a rotational symmetry. This is also clear from Fig. 4, in which the longitudinal axis L1 is perpendicular to the plane of the drawing.
  • the arrangement of the light-emitting diodes 20A-24C in the light-emitting diode groups 20x, 22x, 24x corresponds in this respect to the configuration of the respective associated free-form surface 26, 28, 30, as well as the light-emitting diodes 20A-24C of each group 20x, 22x, 24x with respect to a transverse axis Q2 of this group mirror-symmetrical are arranged;
  • the transverse axis Q2 of each light-emitting diode group 20x, 22x, 24x coincides with the transverse axis Q1 of the associated free-form surface 26, 28, 30.
  • each light-emitting diode group 20x, 22x, 24x In the direction of an axis L2 which extends through each light-emitting diode group 20x, 22x, 24x in the longitudinal direction of the associated free-form surface 26, 28, 30, however, there is neither mirror nor rotational symmetry.
  • the light-emitting diodes of each group 20x, 22x, 24x are arranged in the present embodiment at the corners of an imaginary isosceles triangle whose base is parallel to the axis L2 and whose two legs extend mirror-symmetrically to the axis Q2.
  • a seal 40 is arranged between the light-shaping element 12 and serving as a base heat sink 16, which ensures a dust- and moisture-tight closure.
  • the light-shaping element 12 is provided with two lateral mounting rails 42, 44 fixed to the heat sink 16, wherein the frame 34 of the light-shaping element 12 rests against a mounting surface 46 of the heat sink 16.
  • the light-emitting diode unit 14 is also connected to the mounting surface 46 in order to ensure good dissipation of the heat generated by the light-emitting diodes 20A-24C into the heat sink 16.
  • each light-emitting diode group 20x, 22x, 24x reaches the region of the respective associated free-form surface 26, 28, 30
  • a sufficient part of the light reaches the light-diffusing region 32 and is radiated therefrom as a diffused backlight.
  • FIGS. 5 and 6 show an exemplary embodiment of a traffic route light in which a plurality of lighting modules 10 ', each having a light emission side 36', are inserted into a housing 50.
  • the housing 50 is designed, for example, approximately cuboid and has lower edges 52 which enclose a mounting opening for the lighting modules 10 '.
  • the lighting modules 10 'shown in FIGS. 5 and 6 differ from the lighting modules 10 described so far. Like the lighting modules 10, however, the lighting modules 10' also have a plurality of light emitting diodes and a plurality of refractive optical free-form surfaces for light shaping.
  • the freeform surfaces of the lighting modules 10 ' are in some - but not all - embodiments as well as the above-described free-form surfaces 26, 28, 30 of the lighting modules 10 configured.
  • each such free-form surface can be assigned a group of light-emitting diodes, which can be configured and arranged, for example, just like the light-emitting diode groups 20x, 22x, 24x described above.
  • the traffic route light according to FIG. 5 and FIG. 6 is modified in that lighting modules 10, as shown in FIGS. 1 to 4 and described in detail above, are provided instead of the lighting modules 10 '.
  • FIGS. 5 and 6-and all the modifications just mentioned- has in common that the lighting modules 10, 10 'are arranged side by side in the housing so that the longitudinal axes of the lighting modules 10, 10' - in FIG. 5 perpendicular to the plane of the drawing - side by side and parallel to each other.
  • an arrangement axis A is shown, along which the lighting modules 10, 10 'are lined up.
  • Each of the lighting modules 10, 10 ' has a light emission axis L, which is characteristic for the primary light emission direction of the lighting module 10, 10'.
  • the light emission axes L of the lighting modules 10, 10 ' run parallel to one another but obliquely to the arrangement axis A.
  • a fixed angle exists between the light emission axes L and the arrangement axis A, which, for example, depends on the quadrant in which the angle is measured - between 45 ° and 85 ° or between 95 ° and 135 °.
  • the primary light emission direction in the arrangement shown in FIG. 5 has a predominantly, but not exclusively downwardly directed, component in the drawing plane.

Landscapes

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

Abstract

L'invention concerne un module d'éclairage (10) pour l'éclairage stationnaire de voies de circulation, comportant plusieurs diodes électroluminescentes (20A - 24C) et un élément de mise en forme de lumière (12). L'élément de mise en forme de lumière (12) présente plusieurs surfaces de mise en forme libres, optiques et réfractives (26, 28, 30) pour la mise en forme de la lumière, et au moins une zone de diffusion de la lumière (32) pour émettre de la lumière issue des diodes électroluminescentes (20x, 22x, 24x), lors du fonctionnement du module d'éclairage (10). Un appareil d'éclairage de voies de circulation comporte un boîtier et plusieurs modules d'éclairage (10) disposés dans le boîtier de telle manière que des axes longitudinaux des modules d'éclairage (10) s'étendent côte à côte et parallèlement les uns aux autres, et que des côtés d'émission de lumière (36) des modules d'éclairage sont disposés en dents de scie les uns par rapport aux autres. La construction selon l'invention permet d'une part un bon éclairage de la zone de la voie de circulation et n'occasionne d'autre part aucun éblouissement ou gêne pour les passants ou riverains.
EP11706774A 2010-02-11 2011-02-10 Module d'éclairage pour l'éclairage de voies de circulation et appareil d'éclairage de voies de circulation Withdrawn EP2534413A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010001860A DE102010001860A1 (de) 2010-02-11 2010-02-11 Leuchtmodul zur Verkehrswegebeleuchtung und Verkehrswegeleuchte
PCT/EP2011/051945 WO2011098515A1 (fr) 2010-02-11 2011-02-10 Module d'éclairage pour l'éclairage de voies de circulation et appareil d'éclairage de voies de circulation

Publications (1)

Publication Number Publication Date
EP2534413A1 true EP2534413A1 (fr) 2012-12-19

Family

ID=44147591

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11706774A Withdrawn EP2534413A1 (fr) 2010-02-11 2011-02-10 Module d'éclairage pour l'éclairage de voies de circulation et appareil d'éclairage de voies de circulation

Country Status (5)

Country Link
US (1) US20130120991A1 (fr)
EP (1) EP2534413A1 (fr)
BR (1) BR112012020283A2 (fr)
DE (1) DE102010001860A1 (fr)
WO (1) WO2011098515A1 (fr)

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Publication number Publication date
WO2011098515A1 (fr) 2011-08-18
DE102010001860A1 (de) 2011-08-11
BR112012020283A2 (pt) 2016-05-03
US20130120991A1 (en) 2013-05-16

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