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EP1947379B1 - Outdoor lighting - Google Patents

Outdoor lighting Download PDF

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Publication number
EP1947379B1
EP1947379B1 EP07025237A EP07025237A EP1947379B1 EP 1947379 B1 EP1947379 B1 EP 1947379B1 EP 07025237 A EP07025237 A EP 07025237A EP 07025237 A EP07025237 A EP 07025237A EP 1947379 B1 EP1947379 B1 EP 1947379B1
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EP
European Patent Office
Prior art keywords
light
reflector
housing
leds
outdoor
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.)
Revoked
Application number
EP07025237A
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German (de)
French (fr)
Other versions
EP1947379A1 (en
Inventor
Eckhard Hofmann
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LICHT Design Management Eckhard Hofmann
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LICHT Design Management Eckhard Hofmann
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Application filed by LICHT Design Management Eckhard Hofmann filed Critical LICHT Design Management Eckhard Hofmann
Publication of EP1947379A1 publication Critical patent/EP1947379A1/en
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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
    • F21S8/088—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light with lighting device mounted on top of the standard, e.g. for pedestrian zones
    • 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
    • F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing light
    • F21V5/005—Refractors for light sources using microoptical elements for redirecting or diffusing light using microprisms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • F21V5/045—Refractors for light sources of lens shape the lens having discontinuous faces, e.g. Fresnel lenses
    • 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
    • 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
    • F21W2131/105—Outdoor lighting of arenas or the like
    • 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
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the invention relates to an outdoor lamp for lighting of terrain, in particular of streets, squares, etc. according to the preamble of claim 1.
  • Such an outdoor lamp is known from JP 2004-281327 ,
  • the lighting of streets, squares, etc. is generally carried out with luminaires mounted on poles, guy ropes or house facades at a height (point height) between 4 meters and 20 meters above the surface to be illuminated.
  • the different light heights result from the different applications, eg. As the size of the surface to be illuminated or the distance of the lights to each other.
  • the essential goal is that these lights illuminate a large area as evenly as possible. This will u. a. achieved in that the height of the light points is optimized upwards.
  • high-pressure sodium vapor lamps and mercury-vapor lamps are used in the range of the required power of 50 W to 1000 W. Due to their radiation pattern characteristics, these lamps require a three-dimensionally shaped reflector which is optimized for the distribution of light intensity.
  • the principle described remains the lights on poles or guy ropes or house facades with a conspicuous high light height even with a substitution of the aforementioned bulbs by LEDs.
  • the luminaire comprises a plurality of LEDs which are arranged in a reflector which is fastened to the top of a mast.
  • the mast is placed on the edge of the path to be illuminated, and the lamp is directed obliquely on the way.
  • the invention is therefore an object of the invention to provide a suitable for the lighting of a terrain, especially streets and squares outdoor lamp in which the light source is brought closer to the terrain to be lit and the area to be illuminated is still illuminated uniformly.
  • FIG. 1 is designed as a vertical column inventive outdoor lamp 1 is shown.
  • Such columns may be along streets S, z. B. are placed on the outer edge of the sidewalk and direct all the light emitted by LED's 3, via a reflector 4 and a light-guiding unit 6 on short paths to the surfaces to be illuminated of the sidewalk and the street.
  • the light-directing unit 6 has a circular and / or linear Fresnelllinsen- and / or micro-prism structure, and their targeted optical design, the light is directed exclusively to the surfaces to be illuminated and radiation in directions that do not require light, for. B. prevented upwards.
  • the minimum height of 4 meters indicated in the luminaires of the state of the art plays no role, d. H. the light spot heights of the lights according to the invention are usually far below 4 meters.
  • FIG. 1 illustrated vertical arrangement of the outdoor lamp according to the invention is merely an example to explain the feasible with such lights new lighting principle.
  • the lights can of course also in other ways, eg. B. be arranged horizontally.
  • FIG. 2 is a cross section through the outdoor light after FIG. 1 shown.
  • the cross-section shows one of the series of high-power LEDs 3, which are arranged at the bottom of a common reflector 4.
  • the reflector 4 is mounted within the enclosure 5.
  • the reflector 4 serves to parallelize the light beams 2 generated by the LEDs to its light exit opening. How out FIG. 2 can be seen, the enclosure 5 is sealed at the front of the reflector 4 by a glass or a glassy plastic existing light-directing unit 5.
  • the light-directing unit 6 in this embodiment is a flat plate with a circular and / or linear Fresnelllinsen- and / or micro-prism structure.
  • the Fresnelllinsen- and / or micro prism structure is adapted to the specific application of the lamp in such a way that the light rays optically exclusively to the surfaces to be illuminated, z. B. be directed to the limit of illumination by the adjacent lights.
  • FIG. 3 shows a perspective view of the reflector 4 in a horizontal position.
  • the light emanating from the LED's is passed through the common reflector 4 parallelized to the light-directing device 6 and the light beams 2 are distributed by the latter in a targeted manner onto the surfaces to be illuminated.
  • the light-directing device 6 is a flat plate in the embodiment described here. But it can also be a curved plate, if accordingly the Fresnelllinsen- and / or micro-prism structure is tuned with the curvature.
  • FIG. 4 schematically shows the application of the lights according to the invention at a road intersection in a plan view.
  • the lights 1 are the in FIG. 1 shown lamp, ie it is vertically arranged columnar lights.
  • the housing 5 houses four reflectors 4 and radiates the light on all four sides, with the light-directing devices being tuned so that the light illuminates both the intersection and the outgoing intersection streets including the sidewalks evenly.

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

Abstract

The outside light for the illuminating of streets, squares and suchlike, with several LEDs (3) arranged in at least one reflector (4) and sending out light beams (2), has a light guiding unit (6) which in the light passage direction has a circular and/or linear Fresnel lens and/or a microprism structure. The LEDs are arranged in series based on a common reflector which extends parallel to the longitudinal direction of the reflector's protective housing (5).

Description

Die Erfindung betrifft eine Außenleuchte zur Beleuchtung von Geländen, insbesondere von Straßen, Plätzen usw. gemäß des Oberbegriffs von An spruch 1. Eine derartige Außenleuchte ist bekannt aus JP 2004-281327 .The invention relates to an outdoor lamp for lighting of terrain, in particular of streets, squares, etc. according to the preamble of claim 1. Such an outdoor lamp is known from JP 2004-281327 ,

Die Beleuchtung von Straßen, Plätzen usw. erfolgt im Allgemeinen mit Leuchten, die in einer Höhe (Lichtpunkthöhe) zwischen 4 Meter und 20 Metern über der zu beleuchtenden Fläche an Masten, Abspannseilen oder Häuserfassaden angebracht sind.The lighting of streets, squares, etc. is generally carried out with luminaires mounted on poles, guy ropes or house facades at a height (point height) between 4 meters and 20 meters above the surface to be illuminated.

Die unterschiedlichen Lichtpunkthöhen ergeben sich aus den unterschiedlichen Anwendungsfällen, z. B. der Größe der zu beleuchtenden Fläche oder des Abstandes der Leuchten zueinander. Wesentliches Ziel ist es, dass diese Leuchten möglichst einen großen Bereich gleichmäßig ausleuchten. Das wird u. a. dadurch erreicht, dass die Höhe der Lichtpunkte nach oben hin optimiert wird.The different light heights result from the different applications, eg. As the size of the surface to be illuminated or the distance of the lights to each other. The essential goal is that these lights illuminate a large area as evenly as possible. This will u. a. achieved in that the height of the light points is optimized upwards.

Üblicherweise kommen Natriumdampf-Hochdrucklampen und Quecksilberdampflampen im Bereich der erforderlichen Leistung von 50 W bis 1000 W zum Einsatz. Diese Leuchtmittel verlangen auf Grund ihrer Strahlenmodell-Charakteristik einen dreidimensional ausgeformten Reflektor, der für die Lichtstärkeverteilung optimiert wird.Usually, high-pressure sodium vapor lamps and mercury-vapor lamps are used in the range of the required power of 50 W to 1000 W. Due to their radiation pattern characteristics, these lamps require a three-dimensionally shaped reflector which is optimized for the distribution of light intensity.

Ein Beispiel für derartige Leuchten ist in dem deutschen Gebrauchsmuster DE 71 24 696 U1 beschrieben und dargestellt.An example of such luminaires is in the German utility model DE 71 24 696 U1 described and illustrated.

Natriumdampf-Hochdruck- und Quecksilberdampflampen haben jedoch eine relativ begrenzte Lebensdauer, so dass sie des Öfteren ersetzt werden müssen, wodurch hohe Kosten entstehen. Auch ist der Energiebedarf der in diesen bekannten Leuchten verwendeten Lampen relativ hoch.However, high-pressure sodium and mercury vapor lamps have a relatively limited life, so they must be replaced frequently, which high costs arise. Also, the energy consumption of the lamps used in these known lights is relatively high.

Um die Lebensdauer zu verlängern und den Energiebedarf zu senken, wurde eine mit Hochleistungs-Leuchtdioden (LED's) bestückte Außenleuchte entwickelt, die im deutschen Gebrauchsmuster DE 201 14 085 U1 beschrieben und dargestellt ist. Sie unterscheidet sich von den vorgenannten Leuchten im Wesentlichen lediglich durch den Austausch der energieintensiven und kurzlebigen Lampen gegen die energiesparenden und in Größenordnungen langlebigeren LED's.In order to extend the service life and reduce the energy requirement, an outdoor luminaire equipped with high-power LEDs (LEDs) was developed DE 201 14 085 U1 described and illustrated. It differs from the aforementioned lights essentially only by replacing the energy-intensive and short-lived lamps against the energy-saving and in terms of life-long LED's.

Eine Weiterentwicklung vorgenannter Außenleuchte auf LED-Basis wird in dem deutschen Gebrauchsmuster DE 203 17 444 U1 beschrieben. Bei dieser Leuchte wurde die aus dem Stand der Technik bekannte, das Reflektorgehäuse in der Lichtabstrahlrichtung verschließende transparente Leuchtenabdeckung durch einen das von den LED's ausgehende Licht sammelnden und auf die auszuleuchtende Fläche leitenden Lichtlenkkörper ersetzt. Durch den Lichtlenkkörper werden eine weitere Erhöhung der Lichtausbeute und eine gleichmäßigere Ausleuchtung erreicht. Der Lichtlenkkörper ist jedoch ein relativ voluminöses, optisch aufwändiges Gebilde.A further development of the aforementioned LED-based outdoor light is described in the German utility model DE 203 17 444 U1 described. In this lamp, the known from the prior art, the reflector housing in the Lichtabstrahlrichtung closing transparent light cover has been replaced by a light emanating from the LED's outgoing light and directed to the surface to be illuminated light guide body. The light-guiding body achieves a further increase in the luminous efficacy and a more uniform illumination. However, the light-guiding body is a relatively bulky, visually complex structure.

Außerdem bleibt das beschriebene Prinzip der Leuchten an Masten oder Abspannseilen oder an Häuserfassaden mit einer auffällig hohen Lichtpunkthöhe auch bei einer Substitution der genannten Leuchtmittel durch LED's bestehen.In addition, the principle described remains the lights on poles or guy ropes or house facades with a conspicuous high light height even with a substitution of the aforementioned bulbs by LEDs.

Das vorstehend beschriebene, bisher zur Anwendung gekommene Beleuchtungsprinzip hat folgende Nachteile:The above-described, previously used lighting principle has the following disadvantages:

Die Energieeffizienz ist durch die genannten großen Lichtpunkthöhen mangelhaft. Die Beleuchtungsstärke nimmt im Quadrat der Entfernung von der zu beleuchtenden Fläche immer weiter ab. Der bisherige Trend, immer höhere Lichtpunkthöhen zu wählen, steht der Forderung nach einer höheren Energieeffizienz konträr entgegen. Durch die großen Lichtpunkthöhen entsteht ein erheblicher uneffizienter Anteil an der gesamten Strahlleistung einer Leuchte, der nicht für die eigentliche Sehaufgabe genutzt wird. Es werden z. B. ungewollt Hausfassaden oder rückwärtige Grundstücke oder andere Flächen mit beleuchtet. Nach eingehenden messtechnischen Untersuchungen gibt es Anwendungsfälle, bei denen nur 5 % der eigentlichen Strahlleistung für die eigentliche Sehaufgabe verwendet wird, d. h., es entsteht ein erheblicher Anteil an ungewollter Lichtimmission.Energy efficiency is inadequate due to the above-mentioned high light heights. The illuminance decreases in the square of the distance from the surface to be illuminated more and more. The previous trend of choosing ever higher light heights is contrary to the demand for higher energy efficiency. Due to the large light heights, a significant inefficient portion of the total beam power of a luminaire, which is not for the actual visual task is being used. There are z. B. unintentionally illuminated house facades or backward plots or other surfaces. After detailed metrological investigations, there are applications in which only 5% of the actual beam power is used for the actual visual task, ie, there is a significant proportion of unwanted light immission.

Aus der JP2004-281327 ist schließlich noch eine LED-Außenleuchte zur Beleuchtung eines Fußweges mit geringer Lichtpunkthöhe von z. B. 1 Meter bekannt. Diese Leuchte wird mit Solarenergie sowie einer Pufferbatterie betrieben, und sie enthält einen Bewegungssensor, der die Leuchte zwecks minimalen Energieverbrauchs bei Annäherung von Personen ein- und nach Weggang der Personen wieder ausschaltet. Die Leuchte umfasst mehrere LED's, die in einem Reflektor angeordnet sind, welche an der Spitze eines Mastes befestigt ist. Der Mast ist am Rande des zu beleuchtenden Weges aufgestellt, und die Leuchte ist schräg auf den Weg gerichtet. Diese Leuchte ist zwar nahe an die zu beleuchtende Fläche herangeführt, sie verteilt aber das von der Lichtquelle emittierte Licht auf der Fläche nur ungleichmäßig.From the JP2004-281327 Finally, there is an LED outdoor lamp for lighting a walk with low mounting height of z. B. 1 meter known. This lamp is operated with solar energy and a backup battery, and it contains a motion sensor that switches off the lamp for minimal energy consumption when approaching people and after departure of the people again. The luminaire comprises a plurality of LEDs which are arranged in a reflector which is fastened to the top of a mast. The mast is placed on the edge of the path to be illuminated, and the lamp is directed obliquely on the way. Although this lamp is brought close to the surface to be illuminated, but it distributes the light emitted from the light source on the surface only unevenly.

Der Erfindung liegt deshalb die Aufgabe zugrunde, eine für die Beleuchtung eines Geländes, insbesondere von Straßen und Plätzen geeignete Außenleuchte zu schaffen, bei der die Lichtquelle näher an das zu beleuchtende Gelände herangeführt ist und das zu beleuchtende Gelände dennoch gleichmäßig ausgeleuchtet wird.The invention is therefore an object of the invention to provide a suitable for the lighting of a terrain, especially streets and squares outdoor lamp in which the light source is brought closer to the terrain to be lit and the area to be illuminated is still illuminated uniformly.

Die Aufgabe wird durch das kennzeichnende Merkmal des Schutzanspruches 1 gelöst. Vorteilhafte Ausführungsformen der Erfindung bilden die Kennzeichen des Unteranspruchs 2.The problem is solved by the characterizing feature of the protection claim 1. Advantageous embodiments of the invention form the characteristics of subclaim 2.

Die Erfindung soll nachfolgend anhand eines Ausführungsbeispieles und unter Bezugnahme auf die anliegenden Figuren 1 bis 4 näher erläutert werden.

  • Figur 1 zeigt eine Ausführungsform einer erfindungsgemäßen Außenleuchte in einer schematischen perspektivischen Ansicht;
  • Figur 2 zeigt in einer schematischen Querschnittsansicht eine in einem Reflektor sowie unter einer lichtlenkenden Einheit angeordnete Leuchtdiode sowie den Verlauf der von der LED ausgehenden Lichtstrahlen;
  • Figur 3 zeigt in einer perspektivischen Ansicht die Anordnung mehrerer LED's in Reihe am Grunde eines gemeinsamen Reflektors und
  • Figur 4 zeigt in einer schematischen Draufsicht die Anordnung von erfindungsgemäßen Außenleuchten an einer Straßenkreuzung, wobei in den Umhausungen der Außenleuchten jeweils mehrere Reflektoren angeordnet sind und die Lichtaustrittsöffnungen der Umhausung in verschiedene Richtungen weisen.
The invention will be described below with reference to an embodiment and with reference to the adjacent FIGS. 1 to 4 be explained in more detail.
  • FIG. 1 shows an embodiment of an outdoor lamp according to the invention in a schematic perspective view;
  • FIG. 2 shows in a schematic cross-sectional view of a arranged in a reflector and under a light-directing unit LED and the course of the emanating from the LED light rays;
  • FIG. 3 shows in a perspective view the arrangement of several LEDs in series at the bottom of a common reflector and
  • FIG. 4 shows a schematic plan view of the arrangement of outdoor lights according to the invention at a street intersection, wherein in the enclosures of the outdoor lights each have a plurality of reflectors are arranged and the light exit openings of the housing have in different directions.

In Figur 1 ist eine als senkrechte Säule ausgebildete erfindungsgemäße Außenleuchte 1 dargestellt. Derartige Säulen können längs von Straßenzügen S, z. B. am Außenrand des Gehsteiges aufgestellt werden und leiten das gesamte Licht, welches von LED's 3 ausgestrahlt wird, über einen Reflektor 4 und eine lichtlenkende Einheit 6 auf kurzem Wege auf die zu beleuchtenden Flächen des Gehsteiges und der Straße.In FIG. 1 is designed as a vertical column inventive outdoor lamp 1 is shown. Such columns may be along streets S, z. B. are placed on the outer edge of the sidewalk and direct all the light emitted by LED's 3, via a reflector 4 and a light-guiding unit 6 on short paths to the surfaces to be illuminated of the sidewalk and the street.

Die lichtlenkende Einheit 6 besitzt eine zirkulare und/oder lineare Fresnelllinsen- und/oder Mikroprismenstruktur, und durch deren gezielte optische Gestaltung wird das Licht ausschließlich auf die zu beleuchtenden Flächen geleitet und eine Abstrahlung in Richtungen, die kein Licht benötigen, z. B. nach oben verhindert. Die nahe Heranführung der Leuchte 1 an die zu beleuchtenden Flächen sowie die gezielte Abstrahlung des Lichtes ausschließlich in Richtungen, in denen das Licht auch tatsächlich erforderlich ist, erhöhen die Energieeffizienz der erfindungsgemäßen Leuchten im Vergleich zu Leuchten des Standes der Technik beträchtlich. Obwohl auch bei den Leuchten des Standes der Technik bereits energiesparende Hochleistungs-LED's zum Einsatz kamen, wurden durch die zur Ausleuchtung der Flächen für notwendig gehaltenen großen Lichtpunkthöhen die durch die LED's erzielten Energieeinsparungen zum großen Teil wieder zunichte gemacht, weil die Beleuchtungsstärke sich im Quadrat der Entfernung der Lichtquelle von der zu beleuchtenden Fläche verringert.The light-directing unit 6 has a circular and / or linear Fresnelllinsen- and / or micro-prism structure, and their targeted optical design, the light is directed exclusively to the surfaces to be illuminated and radiation in directions that do not require light, for. B. prevented upwards. The close approach of the lamp 1 to the surfaces to be illuminated and the targeted emission of light only in directions in which the light is actually required, increase the energy efficiency of the lamps according to the invention considerably compared to lamps of the prior art. Although energy-saving high-performance LEDs were also used in the luminaires of the state of the art, the energy savings achieved by the LEDs were to a large extent canceled out by the large light spot heights necessary for illuminating the surfaces because the illuminance squared the square Distance of the light source from the surface to be illuminated reduced.

Mit den erfindungsgemäßen Leuchten spielt die bei den Leuchten des Standes der Technik als Minimum angegebene Lichtpunkthöhe von 4 Metern keine Rolle mehr, d. h. die Lichtpunkthöhen der erfindungsgemäßen Leuchten liegen in der Regel weit unter 4 Metern.With the luminaires according to the invention, the minimum height of 4 meters indicated in the luminaires of the state of the art plays no role, d. H. the light spot heights of the lights according to the invention are usually far below 4 meters.

Die in Figur 1 dargestellte senkrechte Anordnung der erfindungsgemäßen Außenleuchte ist lediglich ein Beispiel, um das mit solchen Leuchten realisierbare neue Beleuchtungsprinzip zu erläutern. Die Leuchten können selbstverständlich auch in anderer Weise, z. B. waagerecht angeordnet werden. Entscheidend für das neue Beleuchtungsprinzip, welches durch die erfindungsgemäßen Außenleuchten realisiert wird, ist die Anordnung der Leuchten in größtmöglicher Nähe der zu beleuchtenden Flächen und die Ausrichtung der Lichtabstrahlung durch die optische Wirkung der zirkularen und/oder linearen Fresnelllinsen- und/oder Mikroprismenstrukturen.In the FIG. 1 illustrated vertical arrangement of the outdoor lamp according to the invention is merely an example to explain the feasible with such lights new lighting principle. The lights can of course also in other ways, eg. B. be arranged horizontally. Crucial for the new lighting principle, which is realized by the outdoor lights according to the invention, the arrangement of the lights in the closest possible proximity of the surfaces to be illuminated and the alignment of the light emission by the optical effect of the circular and / or linear Fresnelllinsen- and / or micro-prism structures.

In Figur 2 ist ein Querschnitt durch die Außenleuchte nach Figur 1 dargestellt. Der Querschnitt zeigt eine der Reihe von Hochleistungs-LED's 3, die am Grunde eines gemeinsamen Reflektors 4 angeordnet sind. Der Reflektor 4 ist innerhalb der Umhausung 5 befestigt. Der Reflektor 4 dient dazu, die von den LED's erzeugten Lichtstrahlen 2 zu dessen Lichtaustrittsöffnung hin zu parallelisieren. Wie aus Figur 2 erkennbar ist, wird die Umhausung 5 an der Vorderseite des Reflektors 4 durch eine aus Glas oder einen glasartigen Kunststoff bestehende lichtlenkende Einheit 5 dicht abgedeckt.In FIG. 2 is a cross section through the outdoor light after FIG. 1 shown. The cross-section shows one of the series of high-power LEDs 3, which are arranged at the bottom of a common reflector 4. The reflector 4 is mounted within the enclosure 5. The reflector 4 serves to parallelize the light beams 2 generated by the LEDs to its light exit opening. How out FIG. 2 can be seen, the enclosure 5 is sealed at the front of the reflector 4 by a glass or a glassy plastic existing light-directing unit 5.

Die lichtlenkende Einheit 6 ist bei dieser Ausführungsform eine ebene Platte mit einer zirkularen und/oder linearen Fresnelllinsen- und/oder Mikroprismenstruktur. Die Fresnelllinsen- und/oder Mikroprismenstruktur ist dem konkreten Anwendungsfall der Leuchte in der Weise angepasst, dass die Lichtstrahlen optisch ausschließlich zu den zu beleuchtenden Flächen, z. B. bis zur Grenze der Ausleuchtung durch die benachbarten Leuchten gelenkt werden.The light-directing unit 6 in this embodiment is a flat plate with a circular and / or linear Fresnelllinsen- and / or micro-prism structure. The Fresnelllinsen- and / or micro prism structure is adapted to the specific application of the lamp in such a way that the light rays optically exclusively to the surfaces to be illuminated, z. B. be directed to the limit of illumination by the adjacent lights.

Figur 3 zeigt in einer perspektivischen Darstellung den Reflektor 4 in waagerechter Lage. Hier ist nochmals deutlich zu erkennen, dass das von den LED's ausgehende Licht durch den gemeinsamen Reflektor 4 parallelisiert zu der lichtlenkenden Einrichtung 6 geleitet und die Lichtstrahlen 2 von dieser gezielt auf die zu beleuchtenden Flächen verteilt werden. FIG. 3 shows a perspective view of the reflector 4 in a horizontal position. Here again it can be clearly seen that the light emanating from the LED's is passed through the common reflector 4 parallelized to the light-directing device 6 and the light beams 2 are distributed by the latter in a targeted manner onto the surfaces to be illuminated.

Die lichtlenkende Einrichtung 6 ist in dem hier beschriebenen Ausführungsbeispiel eine ebene Platte. Sie kann aber ebenso eine gewölbte Platte sein, wenn dementsprechend die Fresnelllinsen- und/oder Mikroprismenstruktur mit der Wölbung abgestimmt wird.The light-directing device 6 is a flat plate in the embodiment described here. But it can also be a curved plate, if accordingly the Fresnelllinsen- and / or micro-prism structure is tuned with the curvature.

Figur 4 zeigt schematisch die Anwendung der erfindungsgemäßen Leuchten an einer Straßenkreuzung in einer Draufsicht. Die Leuchten 1 sind der in Figur 1 dargestellten Leuchte ähnlich, d. h. es handelt sich um senkrecht angeordnete säulenartige Leuchten. Im Unterschied zu der in Figur 1 dargestellten Leuchte nimmt die Umhausung 5 vier Reflektoren 4 auf und strahlt das Licht nach allen vier Seiten ab, wobei die lichtlenkenden Einrichtungen so abgestimmt sind, dass das Licht sowohl den Kreuzungsbereich als auch die von der Kreuzung abgehenden Straßenzüge einschließlich der Gehwege gleichmäßig ausleuchtet. FIG. 4 schematically shows the application of the lights according to the invention at a road intersection in a plan view. The lights 1 are the in FIG. 1 shown lamp, ie it is vertically arranged columnar lights. Unlike the in FIG. 1 The housing 5 houses four reflectors 4 and radiates the light on all four sides, with the light-directing devices being tuned so that the light illuminates both the intersection and the outgoing intersection streets including the sidewalks evenly.

Diese an den Straßenecken angeordneten säulenartigen Leuchten können z. B. auch mit einer Verkehrsampelanlage kombiniert werden.These arranged on the street corners columnar lights can z. B. also be combined with a traffic signal system.

Durch die erfindungsgemäßen Außenleuchten lassen sich im Vergleich zu den bekannten Außenleuchten beträchtliche Energieeinsparungen erzielen.By the outdoor lights according to the invention can be achieved in comparison to the known outdoor lights considerable energy savings.

Claims (2)

  1. An outdoor light (1) for illuminating areas, in particular streets, squares, etc., comprising plural LEDs (3) arranged in at least one reflector (4) and emitting light beams (2), wherein the at least one reflector (4) is arranged in a housing (5) protecting against environmental impacts, wherein the housing includes at least one light outlet opening which is respectively closed tight by a light directing unit (6) made from glass or a plastic material, that is similar to glass, wherein the light directing unit (6) includes a circular and/or linear Fresnell lens structure and/or micro prism structure, and wherein the LEDs (3) are arranged in series at a base of a common reflector (4) extending parallel to a longitudinal orientation of the housing (5) and wherein the reflector (4) includes a cross-section that aligns the light beams (2) of the LEDs in parallel with the light directing unit (6), and wherein the housing (5) of the outdoor light (1) is configured as a straight column which is vertically arranged on a ground surface.
  2. The outdoor light (1) according to claim 1, wherein plural reflectors (4) are arranged in the housing (5), wherein the light exit openings of the housing (5) are oriented in different directions.
EP07025237A 2007-01-19 2007-12-29 Outdoor lighting Revoked EP1947379B1 (en)

Applications Claiming Priority (1)

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DE202007001148U DE202007001148U1 (en) 2007-01-19 2007-01-19 Outside light for illuminating streets, squares and suchlike has light guiding unit which in light passage direction has circular and/or linear Fresnel lens and/or microprism structure

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EP1947379A1 EP1947379A1 (en) 2008-07-23
EP1947379B1 true EP1947379B1 (en) 2011-06-29

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EP1947379A1 (en) 2008-07-23
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