EP1500868A2 - LED module for vehicle headlamps, and vehicle headlamp - Google Patents

LED module for vehicle headlamps, and vehicle headlamp Download PDF

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Publication number
EP1500868A2
EP1500868A2 EP04013157A EP04013157A EP1500868A2 EP 1500868 A2 EP1500868 A2 EP 1500868A2 EP 04013157 A EP04013157 A EP 04013157A EP 04013157 A EP04013157 A EP 04013157A EP 1500868 A2 EP1500868 A2 EP 1500868A2
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EP
European Patent Office
Prior art keywords
light
carrier
diode module
emitting diode
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.)
Granted
Application number
EP04013157A
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German (de)
French (fr)
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EP1500868B1 (en
EP1500868A3 (en
Inventor
Wilhelm Brandenburg
Oliver Hering
Thomas Dr. Reiners
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Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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Publication of EP1500868A2 publication Critical patent/EP1500868A2/en
Publication of EP1500868A3 publication Critical patent/EP1500868A3/en
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Publication of EP1500868B1 publication Critical patent/EP1500868B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F21S41/192—Details of lamp holders, terminals or connectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • 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
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
    • 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
    • F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
    • 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]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Led Device Packages (AREA)

Abstract

The light-emitting diode module (1) has a carrier (10) for the light-emitting diodes (21,22,23), which is provided with at least one light deflector (311-332), for deflecting the light provided by the light-emitting diodes in a given direction. The light-emitting diodes can be mounted on a mantle surface (11) of the carrier which is asymmetric to its longitudinal axis (A-A), together with a number of longitudinally spaced light deflectors. An independent claim for an automobile head lamp is also included.

Description

Die Erfindung betrifft ein Leuchtdioden-Modul für einen Fahrzeugscheinwerfer gemäß des Oberbegriffs des Patentanspruchs 1 und einen Fahrzeugscheinwerfer gemäß des Oberbegriffs des Patentanspruchs 9.The invention relates to a light-emitting diode module for a vehicle headlight according to of the preamble of claim 1 and a vehicle headlamp according to of the preamble of claim 9.

I. Stand der Technik I. State of the art

Die Offenlegungsschrift WO 01/01037 A1 offenbart einen Fahrzeugscheinwerfer mit einer Vielzahl von als Lichtquelle dienenden Leuchtdioden. Das von den Leuchtdioden emittierte Lichtbündel besitzt mindestens zwei Segmente mit Licht aus unterschiedlichen spektralen Bereichen. Ein erstes Segment des Lichtbündels weist einen hohen Anteil an weißem oder gelb-orangem Licht und ein zweites Segment weist einen hohen Anteil an blau-grünem Licht auf.The published patent application WO 01/01037 A1 discloses a vehicle headlight with a plurality of light emitting diodes serving as a light source. That of the light-emitting diodes emitted light beam has at least two segments with light from different spectral ranges. A first segment of the light beam has a high proportion of white or yellow-orange light and a second segment points a high proportion of blue-green light.

Die Offenlegungsschrift EP 1 298 382 A1 beschreibt ein Leuchtdioden-Modul für eine Fahrzeugleuchte mit einem Reflektor und einem Träger für Leuchtdioden, wobei der Träger eine ebene Oberfläche besitzt, auf dem die Leuchtdioden angeordnet sind.The published patent application EP 1 298 382 A1 describes a light-emitting diode module for a vehicle lamp with a reflector and a support for light-emitting diodes, wherein the carrier has a flat surface on which the light-emitting diodes are arranged are.

II. Darstellung der Erfindung II. Presentation of the invention

Es ist die Aufgabe der Erfindung, ein Leuchtdioden-Modul für einen Fahrzeugscheinwerfer bereitzustellen, das zur Erzeugung diverser, für einen Fahrzeugscheinwerfer typischer Lichtverteilungen geeignet ist. Außerdem ist es die Aufgabe der Erfindung, einen Fahrzeugscheinwerfer bereitzustellen, der die Erzeugung der typischen Lichtverteilungen eines Fahrzeugscheinwerfers allein mittels Leuchtdioden als Lichtquellen ermöglicht. It is the object of the invention to provide a light-emitting diode module for a vehicle headlight to provide for the production of diverse, for a vehicle headlight typical light distributions is suitable. Besides, it is the job of Invention to provide a vehicle headlamp, the generation of the typical Light distributions of a vehicle headlight solely by means of LEDs as Allows light sources.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Patentanspruchs 1 bzw. des Patentanspruchs 9 gelöst. Besonders vorteilhafte Ausführungen der Erfindung sind in den abhängigen Patentansprüchen beschrieben.This object is achieved by the features of claim 1 or of claim 9. Particularly advantageous embodiments of the invention are described in the dependent claims.

Das erfindungsgemäße Leuchtdioden-Modul besitzt einen Träger für mehrere Leuchtdioden, wobei der Träger erfindungsgemäß mit mindestens einem Lichtlenkmittel versehen ist, um das von den Leuchtdioden emittierte Licht in vorgegebene Raumrichtungen zu lenken.The light-emitting diode module according to the invention has a support for several Light-emitting diodes, wherein the carrier according to the invention with at least one light-guiding means is provided to the light emitted by the LEDs in predetermined To direct spatial directions.

Durch das erfindungsgemäße Leuchtdioden-Modul wird eine optimale Anpassung der Form der räumlich ausgedehnten Lichtquelle, die hier aus mehreren Leuchtdioden besteht, an den Reflektor des Fahrzeugscheinwerfers ermöglicht. Es hat sich gezeigt, dass mittels des erfindungsgemäßen Leuchtdioden-Moduls in einem Fahrzeugscheinwerfer unterschiedliche Lichtverteilungen, insbesondere für Abblendlicht, Fernlicht, Nebellicht, Standlicht und Tagfahrlicht, erzeugt werden können. Das erfindungsgemäße Leuchtdioden-Modul dient dabei als Lichtquelle in dem Fahrzeugscheinwerfer und ersetzt die konventionelle Halogenglühlampe oder die Metallhalogenide und Xenon enthaltende Hochdruckentladungslampe. Die Leuchtdioden besitzen erheblich längere Lebensdauer als die vorgenannten Lampen.By the light-emitting diode module according to the invention is an optimal adaptation the shape of the spatially extended light source, which here consists of several light emitting diodes exists, allows the reflector of the vehicle headlight. It has shown, that by means of the light-emitting diode module according to the invention in a vehicle headlight different light distributions, in particular for dipped beam, High beam, fog light, parking light and daytime running lights, can be generated. The invention Light-emitting diode module serves as a light source in the vehicle headlight and replaces the conventional halogen incandescent lamp or metal halides and xenon-containing high pressure discharge lamp. The light-emitting diodes have significantly longer life than the aforementioned lamps.

Der Träger des erfindungsgemäßen Leuchtdioden-Moduls ist vorzugsweise axialsymmetrisch, insbesondere rotationssymmetrisch ausgebildet. Er weist eine axialsymmetrisch zu einer Längsachse ausgebildete Mantelfläche auf, auf der mehrere Leuchtdioden und das mindestens eine Lichtlenkmittel angeordnet sind, um das von den Leuchtdioden emittierte Licht in Richtungen quer zur Längsachse des Trägers zu lenken. Die Leuchtdioden des erfindungsgemäßen Leuchtdioden-Moduls sind vorteilhaft entlang mindestens eines Ringes angeordnet, dessen Ringachse parallel zur Längsachse des Trägers oder in der Längsachse des Trägers verläuft. Dadurch kann ein optimales Zusammenwirken des Leuchtdioden-Moduls mit dem Reflektor des Fahrzeugscheinwerfers gewährleistet werden.The carrier of the light-emitting diode module according to the invention is preferably axially symmetric, in particular rotationally symmetrical. He has an axisymmetric formed on a longitudinal axis lateral surface on which several Light-emitting diodes and the at least one light-guiding means are arranged to the of light emitted to the LEDs in directions transverse to the longitudinal axis of the carrier to steer. The light-emitting diodes of the light-emitting diode module according to the invention are advantageous arranged along at least one ring whose ring axis parallel to Longitudinal axis of the carrier or extends in the longitudinal axis of the carrier. This can an optimal interaction of the light-emitting diode module with the reflector of Vehicle headlights are ensured.

Das mindestens eine Lichtlenkmittel ist gemäß des bevorzugten Ausführungsbeispiels als reflektierende Fläche ausgebildet. Vorzugsweise ist die mindestens eine lichtreflektierende Fläche den ringförmig angeordneten Leuchtdioden zugewandt, um deren Licht in Richtungen quer zur Längsachse des Trägers zu bündeln. Gemäß des bevorzugten Ausführungsbeispiels sind sogar zwei lichtreflektierende Flächen vorgesehen, die den entlang des mindestens einen Ringes angeordneten Leuchtdioden zugewandt sind um deren Licht quer zur Längsrichtung des Trägers auf den Reflektor des Fahrzeugscheinwerfers zu lenken. Diese lichtreflektierenden Flächen sind vorzugsweise derart ausgebildet, dass sie den Träger ringförmig umgeben, um die Lichtverluste zu minimieren.The at least one light-guiding means is according to the preferred embodiment formed as a reflective surface. Preferably, the at least one light-reflecting surface facing the annularly arranged light-emitting diodes, to focus their light in directions transverse to the longitudinal axis of the carrier. According to of the preferred embodiment are even two light reflecting surfaces provided, which arranged along the at least one ring LEDs are facing to their light transverse to the longitudinal direction of the carrier on the reflector to steer the vehicle headlight. These light reflecting surfaces are preferably designed such that it surrounds the carrier in an annular manner to the Minimize light losses.

Die Lichtlenkmittel können aber auch als lichtdurchlässige Refraktorelemente, beispielsweise als optische Linsen, ausgebildet sein, die jeweils unmittelbar auf den ringförmig angeordneten Leuchtdioden angeordnet sind und das Licht in Richtungen quer zur Längsachse des Trägers bündeln. Es ist aber auch möglich, das Refraktorelement als einen unmittelbar auf den ringförmig angeordneten Leuchtdioden fixierten, ringförmigen Lichtleiter auszubilden, dessen seitliche Ringflächen totalreflektierend ausgebildet sind und dessen Umfangsfläche lichtdurchlässig ist, um das von denThe light-guiding means can also be used as translucent refractor elements, for example As optical lenses, be formed, each directly on the annularly arranged light-emitting diodes are arranged and the light in directions bundle transversely to the longitudinal axis of the carrier. But it is also possible, the refractor element as a fixed directly on the ring-shaped light-emitting diodes, form annular light guide, the side annular surfaces totally reflective are formed and whose peripheral surface is transparent to the of the

Leuchtdioden emittierte Licht in Richtungen quer zur Längsachse des Trägers zu bündeln.Light emitting diodes emitted light in directions transverse to the longitudinal axis of the carrier bundle up.

Der erfindungsgemäße Fahrzeugscheinwerfer weist ein Leuchtdioden-Modul, das einen Träger für mehrere Leuchtdioden besitzt, einen Reflektor zum Reflektieren des von dem Leuchtdioden-Modul emittierten Lichts und mindestens eine optische Linse zur Abbildung des von dem Reflektor reflektierten Lichts auf. Erfindungsgemäß ist der Träger des Leuchtdioden-Moduls des Fahrzeugscheinwerfers mit mindestens einem Lichtlenkmittel versehen, um das von den Leuchtdioden emittierte Licht in vorgegebene Raumrichtungen zu lenken.The vehicle headlamp according to the invention has a light-emitting diode module, the has a support for a plurality of light-emitting diodes, a reflector for reflecting the light emitted from the light-emitting diode module and at least one optical lens for imaging the light reflected from the reflector. According to the invention the carrier of the light-emitting diode module of the vehicle headlight with at least a light-guiding means to the light emitted by the light-emitting diodes in to direct given spatial directions.

Vorzugsweise weist der Träger eine axialsymmetrisch zu einer Längsachse ausgebildete Mantelfläche auf, wobei auf der Mantelfläche mehrere Dioden und das mindestens eine Lichtlenkmittel angeordnet sind, um das von den Leuchtdioden emittierte Licht in Richtungen quer zur Längsachse des Trägers auf den Reflektor des Fahrzeugscheinwerfers zu lenken. Preferably, the carrier has an axisymmetric to a longitudinal axis formed Surface on, wherein on the lateral surface a plurality of diodes and the at least a light guide means are arranged to emit the light emitted from the LEDs Light in directions transverse to the longitudinal axis of the carrier on the reflector of the vehicle headlight to steer.

Mittels des erfindungsgemäßen Fahrzeugscheinwerfers, der als Lichtquelle ausschließlich Leuchtdioden enthält, können die gleichen Lichtverteilungen wie mit den konventionellen Fahrzeugscheinwerfern, die mit Glühlampen oder Entladungslampen bestückt sind, erzeugt werden. Zum Erzeugen der weitgehend spiegelsymmetrisehen Lichtverteilung des Fernlichts, Nebellichts, Standlichts und Tagfahrlichts weist erfindungsgemäße Fahrzeugscheinwerfer vorteilhaft mindestens eine optische Linse auf, die das von dem Leuchtdioden-Modul emittierte und von dem Fahrzeugscheinwerferreflektor reflektierte Licht auf die Fahrbahn projiziert. Zum Erzeugen der asymmetrischen Lichtverteilung des Abblendlichts weist der erfindungsgemäße Fahrzeugscheinwerfer zusätzlich noch eine Abschattungsvorrichtung auf.By means of the vehicle headlamp according to the invention, as the light source exclusively Contains light emitting diodes, the same light distributions as with the conventional vehicle headlamps using incandescent or discharge lamps are equipped to be generated. To produce the largely mirror-symmetrical Has light distribution of the high beam, fog light, parking light and daytime running lights Vehicle headlights according to the invention advantageously at least one optical lens on, the emitted from the light emitting diode module and the vehicle headlight reflector reflected light projected onto the roadway. To generate the asymmetric Light distribution of the low beam, the vehicle headlight according to the invention additionally a shading device.

Die auf der Mantelfläche des Trägers des Leuchtdioden-Moduls montierten Leuchtdioden sind vorzugsweise entlang mehrerer konzentrisch zur Längsachse des Trägers verlaufender Ringe angeordnet, um einen möglichst hohen Lichtstrom und eine möglichst hohe Lichtstärke zu erzeugen. Der Abstand zwischen den vorgenannten Ringen ist so gewählt, dass durch die Lichtlenkmittel keine oder keine nennenswerte Lichtabschattung verursacht wird. Aus demselben Grund und um eine hinreichend gute Abbildung des als Lichtquelle dienenden Leuchtdioden-Moduls durch den Reflektor und die mindestens eine optische Linse des Fahrzeugscheinwerfers zu gewährleisten, sind die Abmessungen des Trägers des Leuchtdioden-Moduls möglichst klein.The light-emitting diodes mounted on the lateral surface of the carrier of the light-emitting diode module are preferably along several concentric with the longitudinal axis of the carrier extending rings arranged to the highest possible luminous flux and a possible to produce high light intensity. The distance between the aforementioned rings is chosen so that no or no significant Lichtabschattung by the light directing means is caused. For the same reason and for a reasonably good one Illustration of the light-emitting diode module serving as the light source through the reflector and to ensure the at least one optical lens of the vehicle headlight, the dimensions of the carrier of the light-emitting diode module are as small as possible.

III. Beschreibung des bevorzugten Ausführungsbeispiels III. Description of the Preferred Embodiment

Nachstehend wird die Erfindung anhand eines bevorzugten Ausführungsbeispiels näher erläutert. Es zeigen:

Figur 1
Eine Seitenansicht eines Leuchtdioden-Moduls gemäß des bevorzugten Ausführungsbeispiels der Erfindung
Figur 2
Eine Seitenansicht eines Fahrzeugscheinwerfers mit dem in Figur 1 abgebildeten Leuchtdioden-Modul
The invention will be explained in more detail below with reference to a preferred embodiment. Show it:
FIG. 1
A side view of a light emitting diode module according to the preferred embodiment of the invention
FIG. 2
A side view of a vehicle headlamp with the light-emitting diode module shown in Figure 1

In der Figur 1 ist das bevorzugte Ausführungsbeispiel des erfindungsgemäßen Leuchtdioden-Moduls schematisch dargestellt. Das Leuchtdioden-Modul 1 besitzt einen axial symmetrischen Träger 10 mit einer Mantelfläche 11, auf der insgesamt vierundsechzig Leuchtdioden montiert sind. Der Träger 10 ist rotationssymmetrisch bezüglich seiner Längsachse A-A ausgebildet. Von den vorgenannten vierundsechzig Leuchtdioden sind sechzehn Leuchtdioden 21 äquidistant entlang eines ersten Ringes angeordnet, dessen Ringachse mit der Längsachse A-A des Trägers 10 identisch ist. Jeweils vierundzwanzig Leuchtdioden 22 bzw. 23 sind äquidistant entlang eines zweiten und dritten Ringes angeordnet, deren Ringachse ebenfalls mit der Längsachse A-A des Trägers 10 identisch ist. Die Abstände zwischen den vorgenannten Ringen aus Leuchtdioden 21, 22 bzw. 23 beträgt jeweils 9,9 mm. Die gesamte Länge des Trägers 10 beträgt 30 mm und sein größter Außendurchmesser beträgt 10 mm. Zu beiden Seiten jedes Ringes aus Leuchtdioden 21, 22, 23 sind jeweils zwei Schirme angeordnet mit jeweils einer den Leuchtdioden 21, 22, 23 zugewandten, lichtreflektierenden Fläche 311, 312, 321, 322, 331, 332. Die Leuchtdioden 21, 22, 23 sind daher zwischen den lichtreflektierenden Flächen 311, 312, 321, 322, 331, 332 von jeweils zwei Schirmen angeordnet. Die Schirme mit den lichtreflektierenden Flächen 311, 312, 321, 322, 331, 332 sind auf der Mantelfläche 11 des Trägers 10 fixiert, umgeben den Träger 10 ringförmig und sind gegenüber der Längsachse A-A des Trägers 10 geneigt, so dass der Zwischenraum zwischen den lichtreflektierenden Flächen 311, 312, 321, 322, 331, 332, in dem die Leuchtdioden 21, 22, 23 angeordnet sind, konisch ausgebildet ist. Dadurch wird das von den Leuchtdioden 21, 22, 23 emittierte Licht in Richtungen quer zur Längsachse A-A gelenkt. Die Schirme mit den lichtreflektierenden Flächen 311, 312, 321, 322, 331, 332 haben jeweils einen Außendurchmesser von 20 mm. Der Träger 10 ist hohl ausgebildet. Im Inneren des Trägers 10 verlaufen die elektrische Zuleitungen für die Leuchtdioden 21, 22, 23.In the figure 1 is the preferred embodiment of the invention Light-emitting diode module shown schematically. The light-emitting diode module 1 has an axially symmetrical carrier 10 with a lateral surface 11, on the whole sixty four light emitting diodes are mounted. The carrier 10 is rotationally symmetrical formed with respect to its longitudinal axis A-A. Of the aforementioned sixty-four Light emitting diodes are sixteen LEDs 21 equidistant along a first ring arranged, whose ring axis with the longitudinal axis A-A of the carrier 10 is identical. Twenty-four LEDs 22 and 23 are equidistant along a respective second and third ring arranged, the ring axis also with the longitudinal axis A-A of the carrier 10 is identical. The distances between the aforementioned rings from light-emitting diodes 21, 22 and 23 is 9.9 mm in each case. The entire length of the Carrier 10 is 30 mm and its largest outer diameter is 10 mm. To two sides of each ring of light emitting diodes 21, 22, 23 are each two screens arranged with one of the light emitting diodes 21, 22, 23 facing, light-reflecting Surface 311, 312, 321, 322, 331, 332. The light-emitting diodes 21, 22, 23 are therefore, between the light reflecting surfaces 311, 312, 321, 322, 331, 332 of FIG two umbrellas each. The umbrellas with the light reflecting surfaces 311, 312, 321, 322, 331, 332 are fixed on the lateral surface 11 of the carrier 10, surround the carrier 10 annular and are relative to the longitudinal axis A-A of the Carrier 10 inclined so that the space between the light-reflecting Surfaces 311, 312, 321, 322, 331, 332, in which the light emitting diodes 21, 22, 23 arranged are conically shaped. As a result, the light from the LEDs 21, 22, 23rd emitted light in directions transverse to the longitudinal axis A-A. The umbrellas with the light reflecting surfaces 311, 312, 321, 322, 331, 332 each have one Outer diameter of 20 mm. The carrier 10 is hollow. Inside the Carrier 10 extend the electrical leads for the light emitting diodes 21, 22, 23rd

In der Figur 2 ist schematisch eine Seitenansicht eines Fahrzeugscheinwerfers mit dem oben beschriebenen Leuchtdioden-Modul 1 dargestellt. Dieser Fahrzeugscheinwerfer besitzt einen konisch ausgebildeten Freiformflächen-Reflektor 4 mit einer Bautiefe von mindestens 65 mm. Das Leuchtdioden-Modul 1 ist vollständig in dem Freiformflächen-Reflektor 4 angeordnet und daher in der Figur 2 nicht sichtbar. Die Längsachse A-A des Leuchtdioden-Moduls 1 ist mit der optischen Achse A-A des Freiformflächen-Reflektor 4 identisch. Der Abstand des ersten Ringes aus Leuchtdioden 21 von dem Scheitel des Freiformflächen-Reflektor 4 beträgt 9,81 mm. Entsprechend beträgt der Abstand des zweiten und des dritten Ringes aus Leuchtdioden 22 bzw. 23 von dem Scheitel des Freiformflächen-Reflektor 19,7 mm bzw. 29,6 mm. Der Fahrzeugscheinwerfer weist ferner eine vor der Lichtaustrittsöffnung des Freiformflächen-Reflektor 4 angeordnete optische Linse 5 auf, um das von dem Freiformflächen-Reflektor 4 reflektierte Licht auf die Fahrbahn zu projizieren. Zwischen der optischen Linse 5 und dem Freiformflächen-Reflektor 4 ist im Abstand von 100 mm von dem Scheitel des Reflektors 4 eine lichtundurchlässige Blende 6 angeordnet, um die Hell-Dunkel-Grenze des Abblendlichts zu erzeugen.In the figure 2 is a schematic side view of a vehicle headlamp the light-emitting diode module 1 described above. This vehicle headlight has a conical free-form surface reflector 4 with a Construction depth of at least 65 mm. The light-emitting diode module 1 is completely in the Free-form surface reflector 4 arranged and therefore not visible in Figure 2. The Longitudinal axis A-A of the light-emitting diode module 1 is connected to the optical axis A-A of Free-form reflector 4 identical. The distance of the first ring of light emitting diodes 21 from the apex of the free-form surface reflector 4 is 9.81 mm. Corresponding is the distance of the second and third ring of light emitting diodes 22 and 23 from the apex of the free-form surface reflector 19.7 mm and 29.6 mm. The vehicle headlight also has a front of the light exit opening of the free-form surface reflector 4 arranged optical lens 5, to that of the free-form surface reflector 4 to project reflected light onto the roadway. Between the optical lens 5 and the free-form surface reflector 4 is at a distance from 100 mm from the apex of the reflector 4, an opaque aperture 6 is arranged, to create the cut-off line of the low beam.

Claims (16)

Leuchtdioden-Modul für einen Fahrzeugscheinwerfer, wobei das Leuchtdioden-Modul (1) einen Träger (10) für mehrere Leuchtdioden besitzt, dadurch gekennzeichnet, dass der Träger (10) mit mindestens einem Lichtlenkmittel (311) versehen ist, um das von den Leuchtdioden (21) emittierte Licht in vorgegebene Raumrichtungen zu lenken.Light-emitting diode module for a vehicle headlight, wherein the light-emitting diode module (1) has a carrier (10) for a plurality of light-emitting diodes, characterized in that the carrier (10) is provided with at least one light-directing means (311) in order to receive light from the light-emitting diodes ( 21) to direct light emitted in predetermined spatial directions. Leuchtdioden-Modul nach Anspruch 1, dadurch gekennzeichnet, dass der Träger eine axialsymmetrisch zu einer Längsachse (A-A) ausgebildete Mantelfläche (11) aufweist, wobei auf der Mantelfläche (11) des Trägers (10) die Leuchtdioden (21) und das mindestens eine Lichtlenkmittel (311) angeordnet sind.Light-emitting diode module according to claim 1, characterized in that the carrier has an axially symmetrical to a longitudinal axis (AA) formed lateral surface (11), wherein on the lateral surface (11) of the carrier (10) the light-emitting diodes (21) and the at least one light-guiding means (311) are arranged. Leuchtdioden-Modul nach Anspruch 2, dadurch gekennzeichnet, dass die Leuchtdioden (21) entlang mindestens eines Ringes angeordnet sind, dessen Ringachse parallel zur Längsachse (A-A) oder in der Längsachse (A-A) verläuft.Light-emitting diode module according to claim 2, characterized in that the light-emitting diodes (21) are arranged along at least one ring whose ring axis is parallel to the longitudinal axis (AA) or in the longitudinal axis (AA). Leuchtdioden-Modul nach Anspruch 1, dadurch gekennzeichnet, dass das mindestens eine Lichtlenkmittel als lichtreflektierende Fläche (311) ausgebildet ist.Light-emitting diode module according to claim 1, characterized in that the at least one light-guiding means is designed as a light-reflecting surface (311). Leuchtdioden-Modul nach den Ansprüchen 3 und 4, dadurch gekennzeichnet, dass die mindestens eine lichtreflektierende Fläche (311) den entlang des mindestens einen Ringes angeordneten Leuchtdioden (21) zugewandt ist.Light-emitting diode module according to Claims 3 and 4, characterized in that the at least one light-reflecting surface (311) faces the light-emitting diodes (21) arranged along the at least one ring. Leuchtdioden-Modul nach Anspruch 5, dadurch gekennzeichnet, dass die entlang des mindestens einen Ringes angeordneten Leuchtdioden (21) zwischen zwei lichtreflektierenden Flächen (311, 312) angeordnet sind.Light-emitting diode module according to claim 5, characterized in that arranged along the at least one ring light-emitting diodes (21) between two light-reflecting surfaces (311, 312) are arranged. Leuchtdioden-Modul nach einem oder mehreren der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die mindestens eine lichtreflektierende Fläche (311) den Träger (10) ringförmig umgibt. Light-emitting diode module according to one or more of claims 1 to 6, characterized in that the at least one light-reflecting surface (311) surrounds the carrier (10) in an annular manner. Leuchtdioden-Modul nach Anspruch 1, dadurch gekennzeichnet, dass das mindestens eine Lichtlenkmittel als Refraktorelement ausgebildet ist.Light-emitting diode module according to claim 1, characterized in that the at least one light-guiding means is designed as a refracting element. Fahrzeugscheinwerfer, der folgende Eigenschaften aufweist: ein Leuchtdioden-Modul (1), das einen Träger (10) für mehrere Leuchtdioden besitzt, ein Reflektor (4) zum Reflektieren des von dem Leuchtdioden-Modul (1) emittierten Lichts, mindestens eine optische Linse (5) zur Abbildung des von dem Reflektor (4) reflektierten Lichts, dadurch gekennzeichnet, dass der Träger (10) mit mindestens einem Lichtlenkmittel (311) versehen ist, um das von den Leuchtdioden (21) emittierte Licht in vorgegebene Raumrichtungen zu lenken.A vehicle headlamp having the following characteristics: a light-emitting diode module (1) having a support (10) for a plurality of light-emitting diodes, a reflector (4) for reflecting the light emitted from the light-emitting diode module (1), at least one optical lens (5) for imaging the light reflected by the reflector (4), characterized in that the carrier (10) is provided with at least one light-guiding means (311) for directing the light emitted by the light-emitting diodes (21) in predetermined spatial directions. Fahrzeugscheinwerfer nach Anspruch 9, dadurch gekennzeichnet, dass der Träger (10) eine axialsymmetrisch zu einer Längsachse (A-A) ausgebildete Mantelfläche (11) aufweist, wobei auf der Mantelfläche (11) des Trägers (10) die Leuchtdioden (21) und das mindestens eine Lichtlenkmittel (311) angeordnet sind.Vehicle headlight according to claim 9, characterized in that the carrier (10) has an axially symmetrical to a longitudinal axis (AA) formed lateral surface (11), wherein on the lateral surface (11) of the carrier (10) the light-emitting diodes (21) and the at least one Light guide means (311) are arranged. Fahrzeugscheinwerfer nach Anspruch 10, dadurch gekennzeichnet, dass der Reflektor (4) axialsymmetrisch ausgebildet ist und die Längsachse des Trägers (A-A) des Leuchtdioden-Moduls (1) in der Symmetrieachse des Reflektors (4) angeordnet ist.Vehicle headlight according to claim 10, characterized in that the reflector (4) is formed axially symmetrical and the longitudinal axis of the carrier (AA) of the light-emitting diode module (1) in the axis of symmetry of the reflector (4) is arranged. Fahrzeugscheinwerfer nach Anspruch 9, dadurch gekennzeichnet, dass der Fahrzeugscheinwerfer eine Abschattungsvorrichtung (6) zur Erzeugung der Hell-Dunkel-Grenze des Abblendlichts aufweist.Vehicle headlight according to claim 9, characterized in that the vehicle headlight has a shading device (6) for generating the cut-off line of the low beam. Fahrzeugscheinwerfer nach Anspruch 10 oder 11, dadurch gekennzeichnet, dass die Leuchtdioden (21) entlang mindestens eines Ringes angeordnet sind, dessen Ringachse parallel zur Längsachse (A-A) des Trägers (10) oder in dessen Längsachse (A-A) verläuft. Vehicle headlight according to claim 10 or 11, characterized in that the light-emitting diodes (21) along at least one ring are arranged, whose ring axis parallel to the longitudinal axis (AA) of the carrier (10) or in the longitudinal axis (AA). Fahrzeugscheinwerfer nach Anspruch 9, dadurch gekennzeichnet, dass das mindestens eine Lichtlenkmittel als lichtreflektierende Fläche (311) ausgebildet ist.Vehicle headlight according to claim 9, characterized in that the at least one light-guiding means is designed as a light-reflecting surface (311). Fahrzeugscheinwerfer nach Anspruch 9, dadurch gekennzeichnet, dass das mindestens eine Lichtlenkmittel als Refraktorelement ausgebildet ist.Vehicle headlight according to claim 9, characterized in that the at least one light-guiding means is designed as a refracting element. Fahrzeugscheinwerfer nach den Ansprüchen 13 und 14, dadurch gekennzeichnet, dass die entlang des mindestens einen Ringes angeordneten Leuchtdioden (21) zwischen zwei den Träger (10) ringförmig umgebenden, lichtreflektierenden Flächen (311, 312) angeordnet sind.Vehicle headlight according to Claims 13 and 14, characterized in that the light-emitting diodes (21) arranged along the at least one ring are arranged between two light-reflecting surfaces (311, 312) surrounding the carrier (10) in an annular manner.
EP04013157.5A 2003-07-24 2004-06-03 LED module for vehicle headlamps, and vehicle headlamp Not-in-force EP1500868B1 (en)

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DE10333836A DE10333836A1 (en) 2003-07-24 2003-07-24 Light-emitting diode module for vehicle headlights and vehicle headlights
DE10333836 2003-07-24

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EP1500868A2 true EP1500868A2 (en) 2005-01-26
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Also Published As

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JP2005044807A (en) 2005-02-17
US20050018429A1 (en) 2005-01-27
EP1500868B1 (en) 2018-05-02
DE10333836A1 (en) 2005-03-03
US6991354B2 (en) 2006-01-31
EP1500868A3 (en) 2013-09-04
CA2475528A1 (en) 2005-01-24

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