EP2343473A1 - Eclairage de routes à DEL - Google Patents

Eclairage de routes à DEL Download PDF

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Publication number
EP2343473A1
EP2343473A1 EP10015188A EP10015188A EP2343473A1 EP 2343473 A1 EP2343473 A1 EP 2343473A1 EP 10015188 A EP10015188 A EP 10015188A EP 10015188 A EP10015188 A EP 10015188A EP 2343473 A1 EP2343473 A1 EP 2343473A1
Authority
EP
European Patent Office
Prior art keywords
light
channel
shaped reflector
housing
reflector
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Withdrawn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
EP10015188A
Other languages
German (de)
English (en)
Inventor
Martin Werdich
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.)
Werdich Engineering GmbH
Original Assignee
Werdich Engineering 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 Werdich Engineering GmbH filed Critical Werdich Engineering GmbH
Publication of EP2343473A1 publication Critical patent/EP2343473A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • 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
    • F21V7/005—Reflectors for light sources with an elongated shape to cooperate with linear light sources
    • 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
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/10—Pendants, arms, or standards; Fixing lighting devices to pendants, arms, or standards
    • F21V21/116—Fixing lighting devices to arms or standards
    • 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
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/14—Adjustable mountings
    • F21V21/30—Pivoted housings or frames
    • 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
    • F21V7/06—Optical design with parabolic curvature
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear 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
    • 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 a device for illuminating a traffic route according to the preamble of patent claim 1.
  • Devices for illuminating a traffic route are known in a multiplicity of different embodiments.
  • One embodiment is devices for illuminating a traffic route, which use, for example, light-emitting light-emitting diodes (LEDs) as light sources.
  • LEDs light-emitting light-emitting diodes
  • LED light emitting light emitting diodes
  • the document shows DE 20 2007 002 187 U1 a street lamp convertible with LED technology in a mushroom or suitcase form, whereby a board equipped with LED's is suitable for the connection in different versions, as for example E27, E40, GU10, bayonet or Edison linearen.
  • the boards equipped with LEDs or the rod-shaped LED sockets are correspondingly more conventional in the horizontal or vertical direction in the lighting device Illuminant usable.
  • the disadvantage is that the light rays emanating from the bulbs formed in this way are radiated in all directions, as a result of which a considerable proportion of the light rays fall into regions in which illumination is not required or desired. For example, light rays that radiate to lateral areas may present unwanted glare to drivers of vehicles, residents, and / or nocturnal animals. In addition, due to the radiation characteristic, only a spherical cap-like light distribution is achieved in the illuminated area.
  • the object of the invention is to improve a light distribution of an LED lighting device in a region to be illuminated.
  • the invention is based on a device for illuminating a traffic route, wherein the device comprises a housing for receiving at least one light source, wherein the light source is formed by one or more luminous bodies and each luminous body has at least one light-emitting means, preferably a light-emitting light-emitting diode (LED), wherein the lighting means is arranged on a carrier element and is supplied by means of a ballast with electrical energy.
  • the device comprises a housing for receiving at least one light source, wherein the light source is formed by one or more luminous bodies and each luminous body has at least one light-emitting means, preferably a light-emitting light-emitting diode (LED), wherein the lighting means is arranged on a carrier element and is supplied by means of a ballast with electrical energy.
  • LED light-emitting light-emitting diode
  • the essence of the invention is that the luminous body is designed as a channel-shaped reflector.
  • a channel-shaped reflector is meant a tubular body which is open to one side in its entire longitudinal direction, whereby lateral boundaries are formed.
  • the light rays emanating from the light source are shaded by the lateral inner surfaces of the channel-shaped reflector, or, if these are mirrored, reflected.
  • shading (vignetting) of the forming light profile is formed according to the linear beam optics.
  • a beam-like light profile can be formed by shadowing in the edge regions.
  • the shape and size of the light profile to be formed is determined by the shape of the reflector, the position of the light source and the distance between the lighting device and the traffic area.
  • a uniform illumination of the area to be illuminated can be achieved on a traffic route, since due to the reflection of the light beams in a channel-shaped reflector less loss rays occur.
  • the channel-shaped reflector has a U-shaped cross section.
  • the U-shaped cross section comprises a lower region and two lateral regions, wherein the edge line of the cross section may be arched, round or edged.
  • a large portion of the light rays emanating from an LED is reflected at the lateral areas, whereby loss radiation of the light beams can be reduced.
  • an improved mounting of light sources in the lower region of the channel-shaped reflector is possible.
  • the channel-shaped reflector is dimensioned in the region of a base area for the linear arrangement of a plurality of spaced-apart LEDs.
  • the lower portion of an example U-shaped cross-section is in the groove-shaped reflector designed as a flat base of sufficient width.
  • the flat base allows a uniform arrangement and attachment of bulbs.
  • the distance between the LEDs can be selected such that the light beams overlap in the reflector longitudinal direction at an early stage. As a result, a uniform light profile can be formed.
  • the channel-shaped reflector has a base surface which is perforated by at least one recess for the passage of at least one light source.
  • the light-emitting means is arranged on a separate carrier element, wherein the carrier element on the outwardly directed surface of the reflector is preferably releasably attachable. This makes it possible, if necessary, a simplified replacement of a possibly defective bulbs or entire carriers possible.
  • the luminous element and the carrier element is integrally formed.
  • the base of the channel-shaped reflector forms the support element on which the light source can be arranged directly. This has the advantage that the luminous element in the lighting device has a reduced space requirement.
  • the one-piece embodiment forms a module character, which facilitates mounting of the luminous element.
  • the lighting means is arranged in a focal point of an enveloping parabola of a cross section of the channel-shaped reflector.
  • the parabola is an axisymmetric curve whose vertex and focus lie on the symmetry axis of the curve. Light rays entering a parabola running parallel to the axis of symmetry are reflected at the parabolic inner surfaces and subsequently pass through the focal point of the parabola. This effect is in reversed direction.
  • the light rays of a luminous means which is arranged in the focal point of a parabolic, channel-shaped reflector are reflected on the lateral inner surfaces of the reflector and emerge in parallel from the reflector. Only the unreflected direct rays deviate from this direction. Thereby, a light profile with a uniform light distribution can be formed on the surface of a traffic route, which has a high light output due to low loss radiation.
  • the channel-shaped reflector along a groove longitudinal direction has a focal axis and at least one light source is arranged on the focal axis.
  • the focal axis extends in the axial longitudinal direction through the focal point of the reflector cross-section.
  • the illuminant arranged on the carrier element is positioned on the focal axis of the reflector.
  • the reflected light beams form a uniform light profile in the longitudinal direction of the reflector, while perpendicular to the beam-optical defocusing takes place.
  • At least one outer surface of the housing has cooling fins for dissipating heat and / or the housing is formed from a good thermally conductive material, preferably metal.
  • the housing is closed on the surface facing away from the illumination side with a plate-shaped cover, on the surface of which cooling fins for dissipating heat are arranged.
  • the luminous elements are in direct contact via the carrier elements with the cover element of the housing, whereby the heat generated by the luminous means can be dissipated via the carrier elements onto the cooling fins into the environment. By sufficient dissipation of the heat generated by the bulbs, the life of the bulbs can be increased.
  • a plurality of side by side arranged in parallel luminous body are provided in the housing.
  • the parallel arrangement of the luminous body leads to a superposition of individual light profiles in the transverse direction of the channel-shaped reflector, whereby a light profile is formed with a uniform light distribution without diffuse regions within the light profile.
  • each cascade in the housing a plurality of parallel cascades arranged side by side of lighting means are provided, each cascade is arranged on a support member and the light of each cascade is directed by a luminous body according to the invention towards the traffic route.
  • the cascade-shaped arrangement of the bulbs leads to a superposition of light rays in the longitudinal direction of the channel-shaped reflector, whereby a uniform light distribution without diffuse regions takes place.
  • FIG. 1 shown front view of an LED lighting device 1 comprises a rectangular housing 2, wherein the front surface is a large area pierced and closed with a transparent plate material, such as glass or plastic.
  • a light source 3 is arranged, which is formed of juxtaposed luminous bodies 4.
  • the luminous element 4 comprises a channel-shaped reflector 7 in which a plurality of luminous means 5 are arranged linearly one behind the other.
  • the channel-shaped reflector is U-shaped and arranged to be detachable perpendicular to the longitudinal extent of the housing 2.
  • the luminous element 4 is suitable for arrangement in different directions and mutual distances.
  • the light-emitting means 5 is designed as a light-emitting light-emitting diode (LED) and is supplied with electrical energy by means of a ballast (not shown).
  • a headband 12 is pivotally mounted on the housing 2, whereby an alignment of the housing 2 for optimal illumination of a traffic route is made possible.
  • the headband 12 is fastened by means of a clamp 13 to a lamppost or the like.
  • the LED lighting device 1 is supplied in the illustrated embodiment via an electrical supply line 14 with electrical energy. It is also an energy supply via photovoltaic elements conceivable. These can be arranged for example on the back of the housing 2.
  • FIG. 10 is a rear view of an LED lighting device 1 according to FIG FIG. 1 shown, wherein the housing 2 is closed on the surface facing away from the illumination side with a cover 2a.
  • the cover 2a has on its outwardly facing surface Cooling ribs 11, via which the resulting heat from the lamps 5 is dissipated to the environment.
  • the cooling fins 11 are integrally formed with the surface of the cover 2a, wherein the cover 2a is detachably disposed on the back of the housing 2 and by means of a seal.
  • the material of the case 2 and the cover member 2a with the cooling fins 11 disposed thereon is made of a metallic material having good thermal conductivity and corrosion resistance, for example, aluminum alloys.
  • FIG. 3 is a perspective sketch of a channel-shaped reflector 7 shown as part of a filament 4, which has a U-shaped cross-section, wherein the U-shaped cross section is adapted to the course of a parabola.
  • the reflector comprises two oppositely arranged legs 10, which are interconnected via a base 8.
  • the inner surfaces of the legs 10 have a reflective coating, which forms good reflection properties for incident light rays.
  • the base 8 is interrupted by rectangular and uniformly spaced recesses 9, wherein on the outwardly directed surface of the base 8 of the reflector 7, the support elements 6 can be arranged with the lamps 5 arranged thereon.
  • the distance and the curvature of the two opposing legs 10 of the reflector 7 is adapted to the light profile to be formed.
  • the height of the legs 10 of the channel-shaped reflector 7 is a multiple of the height of the light source 5. In individual cases, ratios of 1: 5 or more are conceivable, the ratio always being adapted to the light profile properties to be achieved. From the direction of the symmetry axis of the channel cross-section deviating, emerging from the gutter light beams are thereby minimized.
  • the reflector is thus designed for a maximum number of parallel emerging from the reflector 7 light beams to a high light output within a light profile to be formed and a largely sharp boundary on the surface of an
  • FIG. 4 is a perspective sketch of a Carrier element 6 is shown, which shows a linear arrangement of lamps 5.
  • the lighting means 5 are arranged in a succession and spaced-apart arrangement on the surface of the carrier element 6, wherein the lighting means 5 are supplied by means of electrical conductor tracks 17 with energy.
  • the carrier element 6 is arranged on the outwardly directed surface of the base 8 on the channel-shaped reflector 7 such that the lighting means 5 pass through the recesses 9 arranged in the base 8.
  • the length of a carrier element 6 is adapted to the number of lamps 5 to be arranged, wherein the carrier element 6 is suitable for a series connection of a plurality of carrier elements 6 on the channel-shaped reflector 7.
  • FIG. 5 is a light beam reflection of light rays 15 in a channel-shaped reflector 7 is shown schematically, wherein the light rays 15 are emitted from a light source 5.
  • the cross section of the channel-shaped reflector 7 is adapted to the shape of a parabola, wherein the illuminant 5 is arranged in the focal point 16 of a reflector 7 virtually enveloping parabola.
  • a high proportion of the light rays 15 emanating from the luminous means 5 is reflected on the surfaces of the legs 10 and emitted as parallel light rays 15 from the trough-shaped reflector 7.
  • the parallel light beams 15 form a beam-shaped light profile, wherein the non-parallel, the gutter unreflected directly leaving light beams of the light source 5 form a weak, optimally no longer perceptible, diffuse brightness range at the edge of the light profile.
  • the diffuse edge region of the intensity of the light profile can be minimized by a juxtaposition of further reflectors 7, since the light beams 15 are superimposed by two adjacent reflectors 7 in the adjacent edge regions.
  • a straight line extending through the focal point 16 of the virtually enveloping parabola in the direction of the channel course forms a focal axis on which light sources 5 are arranged linearly one behind the other.
  • a light profile is generated, which illuminates a bar-shaped surface on a traffic route almost homogeneously.
EP10015188A 2010-01-07 2010-12-01 Eclairage de routes à DEL Withdrawn EP2343473A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010004177A DE102010004177A1 (de) 2010-01-07 2010-01-07 LED-Straßenbeleuchtung

Publications (1)

Publication Number Publication Date
EP2343473A1 true EP2343473A1 (fr) 2011-07-13

Family

ID=43569243

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10015188A Withdrawn EP2343473A1 (fr) 2010-01-07 2010-12-01 Eclairage de routes à DEL

Country Status (2)

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EP (1) EP2343473A1 (fr)
DE (1) DE102010004177A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3073605A1 (fr) * 2017-11-16 2019-05-17 Chrysalis Kit pour la realisation d'un luminaire
WO2022129155A1 (fr) * 2020-12-15 2022-06-23 Schreder S.A. Tête de luminaire orientable, ensemble de fixation associé et procédé de réglage de son orientation

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030156416A1 (en) * 2002-02-21 2003-08-21 Whelen Engineering Company, Inc. Led light assembly
WO2006122392A1 (fr) * 2005-05-20 2006-11-23 Tir Systems Ltd. Module d’éclairage à corniches et système
DE202007002187U1 (de) 2007-02-07 2007-04-12 Schmidt Ulrich Straßenbeleuchtung in LED-Technik (Streetlight)
DE102008007723A1 (de) * 2008-02-06 2009-08-20 Osram Gesellschaft mit beschränkter Haftung Beleuchtungsmodul, Leuchte und Verfahren zur Beleuchtung
US20090323334A1 (en) * 2008-06-25 2009-12-31 Cree, Inc. Solid state linear array modules for general illumination

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030156416A1 (en) * 2002-02-21 2003-08-21 Whelen Engineering Company, Inc. Led light assembly
WO2006122392A1 (fr) * 2005-05-20 2006-11-23 Tir Systems Ltd. Module d’éclairage à corniches et système
DE202007002187U1 (de) 2007-02-07 2007-04-12 Schmidt Ulrich Straßenbeleuchtung in LED-Technik (Streetlight)
DE102008007723A1 (de) * 2008-02-06 2009-08-20 Osram Gesellschaft mit beschränkter Haftung Beleuchtungsmodul, Leuchte und Verfahren zur Beleuchtung
US20090323334A1 (en) * 2008-06-25 2009-12-31 Cree, Inc. Solid state linear array modules for general illumination

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3073605A1 (fr) * 2017-11-16 2019-05-17 Chrysalis Kit pour la realisation d'un luminaire
WO2019097026A1 (fr) * 2017-11-16 2019-05-23 Chrysalis Kit pour la réalisation d'un luminaire
WO2022129155A1 (fr) * 2020-12-15 2022-06-23 Schreder S.A. Tête de luminaire orientable, ensemble de fixation associé et procédé de réglage de son orientation
NL2027117B1 (en) * 2020-12-15 2022-07-08 Schreder Sa Orientable luminaire head, fixation assembly therefor, and method for adjusting an orientation thereof

Also Published As

Publication number Publication date
DE102010004177A1 (de) 2011-07-14

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