EP2964486B1 - Lighting device for a vehicle headlight - Google Patents

Lighting device for a vehicle headlight Download PDF

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Publication number
EP2964486B1
EP2964486B1 EP14714915.7A EP14714915A EP2964486B1 EP 2964486 B1 EP2964486 B1 EP 2964486B1 EP 14714915 A EP14714915 A EP 14714915A EP 2964486 B1 EP2964486 B1 EP 2964486B1
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EP
European Patent Office
Prior art keywords
light source
carrier
reflector
illumination device
reflectors
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.)
Active
Application number
EP14714915.7A
Other languages
German (de)
French (fr)
Other versions
EP2964486A1 (en
Inventor
Christian Seyrlehner
Christoph Zeller
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.)
ZKW Group GmbH
Original Assignee
ZKW Group GmbH
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Filing date
Publication date
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Publication of EP2964486A1 publication Critical patent/EP2964486A1/en
Application granted granted Critical
Publication of EP2964486B1 publication Critical patent/EP2964486B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F21S41/19—Attachment of light sources or lamp holders
    • 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/331—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of complete annular areas
    • F21S41/333—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of complete annular areas with discontinuity at the junction between adjacent areas
    • 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
    • F21S41/336—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with discontinuity at the junction between adjacent areas
    • 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/36—Combinations of two or more separate reflectors
    • 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/39—Attachment thereof
    • 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
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
    • 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

Definitions

  • the invention relates to a lighting device for a motor vehicle headlight, wherein the lighting device has at least one reflector, and wherein at least one light source is assigned to the at least one reflector, and wherein light from the at least one light source via the reflector to form a light distribution or part of a light distribution in an area in front of the lighting device is emitted.
  • the invention further relates to a vehicle headlight with at least one such lighting device.
  • LED light sources which consist of one or more light-emitting diodes, are increasingly used to generate main light distribution such as high beam distribution, shielded light distribution, e.g. low beam, etc.
  • the light from one or more LED light sources is emitted via one or more reflectors into an area in front of the motor vehicle in which the vehicle headlight is installed and illuminates the area in front of the vehicle.
  • the LED light source (s) is or are usually arranged on a carrier, usually a heat sink.
  • the LED light source (s) sits or sit on an LED circuit board, which in turn is arranged on the carrier, for example glued to it.
  • the corresponding reflector is positioned accordingly and then on the Support or fixed in relation to the support, usually screwed to this or to another fixed component.
  • the document EP 2 532 951 A2 shows a vehicle headlight which has a reflector to which a light source is assigned, which is mounted displaceably with respect to the reflector.
  • the document WO 2012/028170 A1 shows a headlight for a vehicle with a housing in which LED lamp modules and a reflector are accommodated, the LED lamp modules emitting light into the reflector and the light reflecting on the reflector and leaving the headlight.
  • the lighting device has exactly one reflector carrier, wherein the at least one reflector is fixedly attached to the reflector carrier, and wherein the at least one light source is arranged on at least one light source carrier, and wherein the at least one light source carrier is displaceably mounted on the reflector carrier and can be fixed in a defined position in relation to the reflector carrier.
  • the reflector is no longer arranged in relation to the fixed light source, but the reflector is initially attached to a reflector support, which can be solid, and then the light source, which sits on a light source support, is positioned accordingly and finally the light source carrier is fixed in relation to the reflector carrier.
  • a reflector support which can be solid
  • the light source which sits on a light source support
  • the light source carrier is fixed in relation to the reflector carrier.
  • both the reflector carrier and the light source carrier can be designed as solid components or are preferably made solid, there are no adverse effects on the light image when these components are fixed to one another.
  • the reflector carrier is designed as a main heat sink.
  • the at least one light source carrier is designed as a light source heat sink.
  • the design of the reflector carrier and the light source carrier (s) has the advantage, in addition to optimally dissipating the resulting heat, that heat sinks are usually solid metal bodies, which are therefore also ideally suited for fixing to one another within the meaning of the invention.
  • the at least one light source carrier - in the installed position of the Lighting device - is vertically displaceable with respect to the reflector support.
  • the reflector carrier for the at least one light source carrier has at least one guide groove / at least one guide pin and the at least one Light source carrier has at least one corresponding guide pin / at least one corresponding guide groove.
  • the at least one guide groove is attached to the reflector carrier and the at least one corresponding guide pin is arranged on the at least one light source carrier.
  • the at least one guide groove is elongated and extends in a straight line.
  • the at least one guide groove is arranged so as to extend vertically in the installed position of the lighting device.
  • the at least one guide pin is elongated and straight, extending in the direction of the corresponding guide groove.
  • two (or more) pins guided in the guide groove can be provided, which do not have an elongate extension, but "merely" protrude, for example, are designed as rounded elevations.
  • precisely one guide groove and precisely one corresponding guide pin are provided for each light source carrier.
  • the invention provides that the at least one guide groove or the at least one guide pin is interrupted by a fastening opening for fastening the light source carrier to the reflector carrier is.
  • a guide groove (or precisely one guide groove) and a guide pin (or precisely one guide pin) are thus divided into two parts.
  • the light source carrier can be connected with its central area and thus as uniformly as possible with the reflector carrier, in particular pressed against it.
  • each reflector being assigned exactly one light source carrier, each with at least one light source, and the light source carriers being displaceable and fixable with respect to the reflector carrier.
  • precisely one reflector carrier is provided, and that all light source carriers are displaceably mounted and can be fixed on the one reflector carrier.
  • two or more reflector carriers can be provided for one or more reflectors each, but it is generally simpler in terms of construction if precisely one reflector carrier is provided.
  • the lighting device comprises exactly four reflectors and exactly four assigned light source carriers.
  • the light sources are LED light sources, each LED light source comprising at least one, for example precisely one, light-emitting diode.
  • each LED light source or at least the LED light sources of different reflectors can be controlled and switched on or off and / or dimmed separately, preferably each light emitting diode of an LED light source being separately controllable and on and off and / or is dimmable.
  • At least one of the reflectors is a high beam reflector for generating a high beam distribution or a part of a high beam distribution.
  • Figure 1 shows schematically a lighting device 1 for a motor vehicle headlight, the lighting device 1 having four reflectors 10, 11, 12, 13 in the exemplary embodiment shown.
  • a light source 20, 21, 22, 23 is assigned to each of the four reflectors 10, 11, 12, 13.
  • the light sources 20, 21, 22, 23 are LED light sources, each LED light source 20, 21, 22, 23 comprising at least one light-emitting diode.
  • each LED light source 20, 21, 22, 23 consists of a chip on which 4 light-emitting diodes are located.
  • an LED light source thus comprises 4 light-emitting diodes.
  • the LED light sources 20, 21, 22, 23 assigned to different reflectors 10, 11, 12, 13 are preferably separately controllable and can be switched on or off and / or dimmed so that different reflectors can be supplied with light and correspondingly different light distributions can be activated .
  • Light from a light source 20, 21, 22, 23 assigned to a reflector 10, 11, 12, 13 is emitted into an area in front of the lighting device 1 in order to form a light distribution or a part of a light distribution.
  • the upper and lower reflectors 10, 11 together produce a high beam distribution
  • the two side reflectors 12, 13 together produce a low beam distribution.
  • the Reflectors 12, 13 are designed as double reflectors, see also the comments at the end of the description.
  • the four reflectors 10, 11, 12, 13 are arranged on a reflector carrier 30 and fixedly attached to the reflector carrier 30.
  • "Fixed to the reflector carrier” means that the reflectors are arranged in a fixed manner with respect to the carrier 30; the reflectors are preferably fastened directly to the carrier 30, for example screwed on, as shown in FIG Figure 2 is easy to see.
  • the reflector carrier 30 is preferably designed as a heat sink, via which the heat generated by the light sources 20, 21, 22, 23 can be dissipated.
  • Each of the light sources 20, 21, 22, 23 in turn is arranged on its own, usually much smaller light source carrier 40, 41, 42, 43, these four light source carriers 40, 41, 42, 43 preferably in turn as (four) Heat sinks are formed.
  • Figure 3 shows once again the four light source carriers 40, 41, 42, 43 in isolation in a view from the front
  • Figure 4 shows the four light source carriers 40, 41, 42, 43 on the reflector carrier 30.
  • the light source carriers 40, 41, 42, 43 are displaceably mounted on the reflector carrier 30 and in a defined position with respect to the Reflector carrier 30 can be fixed.
  • the formulation that a light source carrier can be displaceably mounted on the reflector carrier means that the light source carrier is displaceable with respect to the reflector carrier, wherein the light source carrier is preferably mounted displaceably directly on the reflector carrier.
  • the reflector carrier 30 has a guide groove 31a, 31b, 31c, 31d, namely preferably exactly one guide groove for each light source carrier 40, 41, 42, 43.
  • the guide grooves 31a, 31b, 31c, 31d are divided into two parts, so that it is also possible to speak of two grooves per light source carrier.
  • the guide grooves 31a, 31b, 31c, 31d are each interrupted by a fastening opening 50 via which the respective light source carrier can be fastened to the reflector carrier.
  • the fastening opening is, for example, a pre-drilled hole or, if the reflector carrier is cast, the reflector carrier is provided with this hole during the casting process.
  • Each light source carrier 40, 41, 42, 43 has on its side facing or abutting the reflector carrier 30 a guide pin 40 ', 41', 42 ', 43' corresponding to the guide groove 31a, 31b, 31c, 31d , with which the light source carrier is guided in the associated groove.
  • the guide pins 40 ', 41', 42 ', 43' are also interrupted by a fastening opening 51 for fastening the respective light source carrier 40, 41, 42, 43 to the reflector carrier 30, so that here, too, it can be said that two pegs (or an interrupted peg) is provided per light source carrier.
  • the fastening openings 51 in the light source carriers 40, 41, 42, 43 are preferably elongated holes that extend in the direction of displacement of the light source carrier, and through which elongated holes the light source carrier is connected to the reflector carrier with a screw 52 30 can be fixed in the desired, set position.
  • the screws 52 are preferably self-tapping screws, as explained above, which screw into the reflector carrier during the screwing-in process.
  • the guide grooves 31a, 31b, 31c, 31d are elongated and extend in a straight line in the vertical direction, as are the guide pins.
  • the reflectors are already attached to the reflector carrier before the setting of the light sources, so that there is no force acting on the reflectors when setting the light sources and thus no undesired adjustment of the same.
  • the reflector carrier in particular in the form of a heat sink, can be designed as a metal part, for example as an aluminum die-cast part, so that the guide grooves can be made very precisely.
  • the position of the light sources can be set exactly and the position of the light sources in relation to the respectively assigned reflector no longer changes when they are fastened.
  • double or multiple reflectors can also be used in the present invention.
  • reflectors have to be adjusted separately, which is not possible with double and multiple reflectors.
  • the reflectors no longer have to be adjusted, so that double and multiple reflectors can also be used.
  • the two dimming reflectors 12, 13 designed as double reflectors, ie the two reflectors 12, 13 are formed in one component.
  • each light source carrier could be mounted displaceably on its own reflector carrier and the four reflector carriers are permanently connected to one another, but it is generally simpler in terms of construction if exactly one reflector carrier is provided as shown.
  • the surfaces of the guide grooves, on which the light source carriers are displaceably guided are milled and, if necessary, their surfaces are treated in order to obtain particularly flat surfaces so that the light source carriers can be moved easily.
  • Moving the light sources 20, 21 up and down in the vertical direction (that is, up and down; the directions always refer to the installation position of the headlamp), which are assigned to the high beam reflectors 10, 11 (that is, they emit their light onto these reflectors), leads to a change in size of the high beam spot.
  • the size of the high beam distribution can thus be optimally adapted.
  • the vertical (up and down) displacement of the light sources 22, 23 of the low beam reflectors primarily 12, 13 to focus or defocus the light-dark border of the low beam distribution generated with these reflectors and secondarily to a slight up and down movement of the light distribution, so that The position of the low-beam light distribution and the sharpness of the light-dark boundary can be adjusted accordingly via the vertical displacement of these light sources 12, 13.

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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)

Description

Die Erfindung betrifft eine Beleuchtungsvorrichtung für einen Kraftfahrzeugscheinwerfer, wobei die Beleuchtungsvorrichtung zumindest einen Reflektor aufweist, und wobei dem zumindest einen Reflektor zumindest eine Lichtquelle zugeordnet ist, und wobei Licht aus der zumindest einen Lichtquelle über den Reflektor zur Bildung einer Lichtverteilung oder eines Teiles einer Lichtverteilung in einen Bereich vor der Beleuchtungsvorrichtung abgestrahlt wird.The invention relates to a lighting device for a motor vehicle headlight, wherein the lighting device has at least one reflector, and wherein at least one light source is assigned to the at least one reflector, and wherein light from the at least one light source via the reflector to form a light distribution or part of a light distribution in an area in front of the lighting device is emitted.

Weiters betrifft die Erfindung einen Fahrzeugscheinwerfer mit zumindest einer solchen Beleuchtungsvorrichtung.The invention further relates to a vehicle headlight with at least one such lighting device.

Im Fahrzeugscheinwerferbau kommen vermehrt LED-Lichtquellen, welche aus einer oder mehreren Leuchtdioden bestehen, zur Erzeugung von Hauptlichtverteilung wie etwa von Fernlichtverteilung, abgeblendeten Lichtverteilungen, z.B. Abblendlicht usw. zum Einsatz. Üblicherweise wird dabei das Licht von einer oder mehreren LED-Lichtquellen über einen oder mehrere Reflektoren in einen Bereich vor dem Kraftfahrzeug, in welches der Fahrzeugscheinwerfer eingebaut ist, abgestrahlt und beleuchten den Bereich vor dem Fahrzeug.In vehicle headlight construction, LED light sources, which consist of one or more light-emitting diodes, are increasingly used to generate main light distribution such as high beam distribution, shielded light distribution, e.g. low beam, etc. Usually, the light from one or more LED light sources is emitted via one or more reflectors into an area in front of the motor vehicle in which the vehicle headlight is installed and illuminates the area in front of the vehicle.

Um eine gesetzeskonforme Lichtverteilung realisieren zu können, ist es wichtig, dass Reflektor und zugeordnete Lichtquelle(n) korrekt zueinander positioniert werden. Insbesondere bei der Verwendung von LED-Lichtquellen kommt diesem Thema eine noch verstärkte Bedeutung zu, da hier relativ geringe Abweichungen von der Sollposition bereits zu unerwünschten und/oder nicht zulässigen Effekten im Lichtbild führen können.In order to be able to achieve a legally compliant light distribution, it is important that the reflector and the assigned light source (s) are correctly positioned with respect to one another. This topic is even more important when using LED light sources, since here relatively small deviations from the target position can lead to undesirable and / or impermissible effects in the light image.

Üblicherweise ist bzw. sind die LED-Lichtquelle(n) auf einem Träger, in der Regel einem Kühlkörper angeordnet. Die LED-Lichtquelle(n) sitzt bzw. sitzen dabei auf einer LED-Platine, welche wiederum auf dem Träger angeordnet, beispielsweise mit diesem verklebt ist. Der zugehörige Reflektor wird entsprechend positioniert und anschließend an dem Träger bzw. in Bezug auf den Träger fixiert, in der Regel mit diesem oder mit einem anderen feststehenden Bauteil verschraubt.The LED light source (s) is or are usually arranged on a carrier, usually a heat sink. The LED light source (s) sits or sit on an LED circuit board, which in turn is arranged on the carrier, for example glued to it. The corresponding reflector is positioned accordingly and then on the Support or fixed in relation to the support, usually screwed to this or to another fixed component.

Dabei hat sich allerdings häufig gezeigt, dass es durch den Befestigungsvorgang, insbesondere durch das Festschrauben des Reflektors und die dabei auftretenden Kräfte zu einem Verziehen des Reflektors kommen kann oder es generell bei dem Befestigungsvorgang zu einem unbeabsichtigten Verstellen des Reflektors aus der Optimalposition kommt. Dies hat nachteilige Auswirkungen auf das erzielte Lichtbild, teilweise mit dem Resultat, dass das Lichtbild nicht mehr den gesetzlichen Anforderungen entspricht.However, it has often been shown that the fastening process, in particular the screwing down of the reflector and the forces that occur, can lead to a warping of the reflector or the fastening process generally leads to an unintentional adjustment of the reflector from the optimal position. This has detrimental effects on the photo obtained, in some cases with the result that the photo no longer meets the legal requirements.

Das Dokument EP 2 532 951 A2 zeigt einen Fahrzeugscheinwerfer, der einen Reflektor aufweist, dem eine Lichtquelle zugeordnet ist, die in Bezug auf den Reflektor verschieblich gelagert ist. Das Dokument WO 2012/028170 A1 zeigt einen Scheinwerfer fiir ein Fahrzeug mit einem Gehäuse, in dem LED- Leuchtmittelmodule und ein Reflektor aufgenommen sind, wobei die LED- Leuchtmittelmodule Licht in den Reflektor einstrahlen und wobei das Licht am Reflektor reflektiert und den Scheinwerfer verlässt.The document EP 2 532 951 A2 shows a vehicle headlight which has a reflector to which a light source is assigned, which is mounted displaceably with respect to the reflector. The document WO 2012/028170 A1 shows a headlight for a vehicle with a housing in which LED lamp modules and a reflector are accommodated, the LED lamp modules emitting light into the reflector and the light reflecting on the reflector and leaving the headlight.

Es ist eine Aufgabe der Erfindung, eine Beleuchtungsvorrichtung bzw. einen Kraftfahrzeugscheinwerfer zu schaffen, bei welchem auf einfache und platzsparende Weise eine zuverlässige Einstellung von Reflektor und zugehöriger Lichtquelle bzw. zugehörigen Lichtquellen möglich ist, wobei die oben beschriebenen Nachteile behoben sind.It is an object of the invention to create a lighting device or a motor vehicle headlight in which a reliable setting of the reflector and associated light source or associated light sources is possible in a simple and space-saving manner, the disadvantages described above being eliminated.

Diese Aufgabe wird mit einer eingangs erwähnten Beleuchtungsvorrichtung bzw. mit einem Fahrzeugscheinwerfer, welcher zumindest eine Beleuchtungsvorrichtung gemäß Anspruch 1 aufweist.This object is achieved with a lighting device mentioned at the beginning or with a vehicle headlight which has at least one lighting device according to claim 1.

Erfindungsgemäß weist die Beleuchtungsvorrichtung genau einen Reflektor-Träger auf, wobei der zumindest eine Reflektor fix an dem Reflektor-Träger befestigt ist, und wobei die zumindest eine Lichtquelle auf zumindest einem Lichtquellen-Träger angeordnet ist, und wobei der zumindest eine Lichtquellen-Träger an dem Reflektor-Träger verschieblich gelagert und in einer definierten Position in Bezug auf den Reflektor-Träger fixierbar ist.According to the invention, the lighting device has exactly one reflector carrier, wherein the at least one reflector is fixedly attached to the reflector carrier, and wherein the at least one light source is arranged on at least one light source carrier, and wherein the at least one light source carrier is displaceably mounted on the reflector carrier and can be fixed in a defined position in relation to the reflector carrier.

Gemäß der vorliegenden Erfindung wird nicht mehr der Reflektor in Bezug auf die feststehende Lichtquelle angeordnet, sondern der Reflektor wird vorerst auf einem Reflektor-Träger, der massiv ausgebildet sein kann, befestigt, und anschließend wird die Lichtquelle, welche auf einem Lichtquellen-Träger sitzt, entsprechend positioniert und schließlich der Lichtquellen-Träger in Bezug auf den Reflektor-Träger fixiert. Der Einfachheithalber ist hier immer von der Einzahl (der Reflektor, die Lichtquelle, etc.) die Rede, es versteht sich aber für den Fachmann, dass auch mehrere Reflektoren, Lichtquellen, Lichtquellen-Träger usw. vorgesehen sein können.According to the present invention, the reflector is no longer arranged in relation to the fixed light source, but the reflector is initially attached to a reflector support, which can be solid, and then the light source, which sits on a light source support, is positioned accordingly and finally the light source carrier is fixed in relation to the reflector carrier. For the sake of simplicity, the singular (the reflector, the light source, etc.) is always used here, but it is understood by a person skilled in the art that several reflectors, light sources, light source carriers, etc. can also be provided.

Dadurch, dass sowohl Reflektor-Träger als auch Lichtquellen-Träger als massive Bauteile ausgebildet sein können bzw. vorzugsweise massiv ausgebildet sind, kommt es beim Fixieren dieser Bauteile zueinander zu keinen nachteiligen Effekten auf das Lichtbild.Because both the reflector carrier and the light source carrier can be designed as solid components or are preferably made solid, there are no adverse effects on the light image when these components are fixed to one another.

Um die von den Lichtquellen erzeugte Wärme optimal abführen zu können, hat es sich als zweckmäßig erwiesen, wenn der Reflektor-Träger als Haupt-Kühlkörper ausgebildet ist.In order to be able to optimally dissipate the heat generated by the light sources, it has proven to be expedient if the reflector carrier is designed as a main heat sink.

Ebenso hat es sich als zweckmäßig erwiesen, wenn der zumindest eine Lichtquellen-Träger als Lichtquellen-Kühlkörper ausgebildet ist.It has also proven to be expedient if the at least one light source carrier is designed as a light source heat sink.

Die Ausgestaltung des Reflektor-Trägers und des oder der Lichtquellen-Träger hat neben dem optimale Abführen der entstehenden Wärme noch den Vorteil, dass Kühlkörper in der Regel massive Metallkörper sind, die sich somit auch optimal für das Fixieren aneinander im Sinne der Erfindung eignen.The design of the reflector carrier and the light source carrier (s) has the advantage, in addition to optimally dissipating the resulting heat, that heat sinks are usually solid metal bodies, which are therefore also ideally suited for fixing to one another within the meaning of the invention.

In der Regel ist eine Einstellung des Lichtbildes in Höhenrichtung von besonderer Bedeutung. Entsprechend ist bei einer konkreten Ausführungsform der Erfindung vorgesehen, dass der zumindest eine Lichtquellen-Träger - in Einbaulage der Beleuchtungsvorrichtung - in Bezug auf den Reflektor-Träger vertikal verschiebbar ist.As a rule, an adjustment of the light image in the height direction is of particular importance. Accordingly, it is provided in a specific embodiment of the invention that the at least one light source carrier - in the installed position of the Lighting device - is vertically displaceable with respect to the reflector support.

Gemäß der Erfindung, welche sich einfach herstellen lässt und eine exakte Einstellung erlaubt und ein stabiles Positionieren in der Endposition ermöglicht, ist vorgesehen, dass der Reflektor-Träger für den zumindest einen Lichtquellen-Träger zumindest eine Führungsnut/zumindest einen Führungszapfen aufweist und der zumindest eine Lichtquellen-Träger zumindest einen korrespondierenden Führungszapfen/zumindest eine korrespondierende Führungsnut aufweist.According to the invention, which is easy to manufacture and allows an exact setting and enables stable positioning in the end position, it is provided that the reflector carrier for the at least one light source carrier has at least one guide groove / at least one guide pin and the at least one Light source carrier has at least one corresponding guide pin / at least one corresponding guide groove.

Durch die Verwendung von in einer Nut geführten Zapfen ist auch gewährleistet, dass ein Verstellen nur in Richtung der Nut möglich ist, während ein Verstellen seitlich dazu ausgeschlossen ist. Durch diese Reduzierung der Freiheitsgrade kann die gewünschte Position rasch eingestellt werden und die Anzahl der unerwünschten Positionierungsmöglichkeiten ist stark reduziert.The use of pins guided in a groove also ensures that an adjustment is only possible in the direction of the groove, while an adjustment to the side is excluded. As a result of this reduction in the degrees of freedom, the desired position can be set quickly and the number of undesired positioning options is greatly reduced.

Vorzugsweise ist dabei vorgesehen, dass die zumindest eine Führungsnut an dem Reflektor-Träger angebracht ist und der zumindest eine korrespondierende Führungszapfen an dem zumindest einen Lichtquellen-Träger angeordnet ist.It is preferably provided that the at least one guide groove is attached to the reflector carrier and the at least one corresponding guide pin is arranged on the at least one light source carrier.

Um ein einfaches Verstellen zu ermöglichen, ist mit Vorteil vorgesehen, dass die zumindest eine Führungsnut länglich und sich geradlinig erstreckend ausgebildet ist.In order to enable simple adjustment, it is advantageously provided that the at least one guide groove is elongated and extends in a straight line.

Für ein Einstellen des Lichtbildes in Höhenrichtung ist vorgesehen, dass die zumindest eine Führungsnut in Einbaulage der Beleuchtungsvorrichtung sich vertikal erstreckend angeordnet ist.To adjust the light image in the vertical direction, it is provided that the at least one guide groove is arranged so as to extend vertically in the installed position of the lighting device.

Ebenso ist mit Vorteil vorgesehen, dass der zumindest eine Führungszapfen länglich und geradlinig, sich in Richtung der korrespondierenden Führungsnut erstreckend ausgebildet ist.It is also advantageously provided that the at least one guide pin is elongated and straight, extending in the direction of the corresponding guide groove.

Es können aber an Stelle eines länglichen Führungszapfens auch zwei (oder mehr) in der Führungsnut geführte Zapfen vorgesehen sein, die keine längliche Erstreckung aufweisen, sondern "lediglich" abstehend ausgebildet, z.B. als abgerundete Erhebungen ausgebildet sind.Instead of one elongated guide pin, however, two (or more) pins guided in the guide groove can be provided, which do not have an elongate extension, but "merely" protrude, for example, are designed as rounded elevations.

Typischerweise ist vorgesehen, dass für jeden Lichtquellen-Träger genau eine Führungsnut und genau ein korrespondierender Führungszapfen vorgesehen ist.It is typically provided that precisely one guide groove and precisely one corresponding guide pin are provided for each light source carrier.

Um ein gleichmäßiges und zuverlässiges Fixieren eines Lichtquellen-Trägers an dem Reflektor-Träger zu ermöglichen, ist bei der Erfindung vorgesehen, dass die zumindest eine Führungsnut bzw. der zumindest eine Führungszapfen durch eine Befestigungsöffnung zum Befestigen des Lichtquellen-Trägers an dem Reflektor-Träger unterbrochen ist.In order to enable a light source carrier to be evenly and reliably fixed to the reflector carrier, the invention provides that the at least one guide groove or the at least one guide pin is interrupted by a fastening opening for fastening the light source carrier to the reflector carrier is.

Eine Führungsnut (bzw. die genau eine Führungsnut) sowie ein Führungszapfen (bzw. genau ein Führungszapfen) sind somit zweigeteilt.A guide groove (or precisely one guide groove) and a guide pin (or precisely one guide pin) are thus divided into two parts.

Auf diese Weise lässt sich der Lichtquellen-Träger mit seinem zentralen Bereich und somit möglichst gleichmäßig mit dem Reflektor-Träger verbinden, insbesondere an diesem anpressen.In this way, the light source carrier can be connected with its central area and thus as uniformly as possible with the reflector carrier, in particular pressed against it.

Bei der Erfindung sind zwei oder mehr Reflektoren vorgesehen sind, wobei jedem Reflektor genau ein Lichtquellen-Träger mit jeweils zumindest einer Lichtquelle zugeordnet ist, und wobei die Lichtquellen-Träger in Bezug auf den Reflektor-Träger verschiebbar und fixierbar sind.In the invention, two or more reflectors are provided, each reflector being assigned exactly one light source carrier, each with at least one light source, and the light source carriers being displaceable and fixable with respect to the reflector carrier.

Weiters ist vorgesehen, dass genau ein Reflektor-Träger vorgesehen ist, und dass alle Lichtquellen-Träger an dem einen Reflektor-Träger verschiebbar gelagert und fixierbar sind. Prinzipiell ist es denkbar, dass auch zwei oder mehr Reflektor-Träger für jeweils einen oder mehrere Reflektoren vorgesehen sein können, konstruktiv einfacher ist es allerdings in der Regel, wenn genau ein Reflektor-Träger vorgesehen ist.Furthermore, it is provided that precisely one reflector carrier is provided, and that all light source carriers are displaceably mounted and can be fixed on the one reflector carrier. In principle, it is conceivable that two or more reflector carriers can be provided for one or more reflectors each, but it is generally simpler in terms of construction if precisely one reflector carrier is provided.

Insbesondere ist, z.B. zur Erzeugung einer Fernlichtverteilung und einer abgeblendeten Lichtverteilung, wie etwa einer Abblendlichtverteilung mit der Beleuchtungsvorrichtung vorgesehen, dass die Beleuchtungsvorrichtung genau vier Reflektoren und genau vier zugeordnete Lichtquellen-Träger umfasst.In particular, it is provided, e.g. for generating a high beam distribution and a shielded light distribution, such as a low beam distribution with the lighting device, that the lighting device comprises exactly four reflectors and exactly four assigned light source carriers.

Mit Vorteil ist vorgesehen, dass die Lichtquellen LED-Lichtquellen sind, wobei jede LED-Lichtquelle zumindest eine, beispielsweise genau eine Leuchtdiode umfasst.It is advantageously provided that the light sources are LED light sources, each LED light source comprising at least one, for example precisely one, light-emitting diode.

Insbesondere ist es von Vorteil, wenn jede LED-Lichtquelle bzw. zumindest die LED-Lichtquellen unterschiedlicher Reflektoren getrennt ansteuerbar und ein- bzw. ausschaltbar und/oder dimmbar ist, wobei vorzugsweise jede Leuchtdiode einer LED-Lichtquelle getrennt ansteuerbar und ein- bzw. ausschaltbar und/oder dimmbar ist.In particular, it is advantageous if each LED light source or at least the LED light sources of different reflectors can be controlled and switched on or off and / or dimmed separately, preferably each light emitting diode of an LED light source being separately controllable and on and off and / or is dimmable.

Bei einer bevorzugten Ausführungsform ist vorgesehen, dass zumindest einer der Reflektoren ein Fernlichtreflektor zur Erzeugung einer Fernlichtverteilung oder eines Teiles einer Fernlichtverteilung ist.In a preferred embodiment it is provided that at least one of the reflectors is a high beam reflector for generating a high beam distribution or a part of a high beam distribution.

Insbesondere bei der Verwendung von Abblendlicht- und/oder Fernlichtverteilung ergeben sich besondere Vorteile im Zusammenhang mit der vertikalen Verstellbarkeit der Lichtquellen, wie dies in der Figurenbeschreibung noch näher erörtert wird.Particularly when using low beam and / or high beam distribution, there are particular advantages in connection with the vertical adjustability of the light sources, as will be discussed in more detail in the description of the figures.

Im Folgenden ist die Erfindung an Hand der Zeichnung näher erörtert. In dieser zeigt

  • Fig. 1 eine schematische Vorderansicht einer erfindungsgemäßen Beleuchtungsvorrichtung, dargestellt ohne Reflektor-Träger,
  • Fig. 2 die Beleuchtungsvorrichtung aus Figur 1 in einer Rückansicht, dargestellt mit Reflektor-Träger,
  • Fig. 3 die Lichtquellen-Kühlkörper der Beleuchtungsvorrichtung mit LED-Lichtquellen in einer Ansicht von vorne,
  • Fig. 4 den Reflektor-Träger mit den Lichtquellen-Kühlkörpern in einer Ansicht von hinten,
  • Fig. 5 den Reflektor-Träger im Bereich des oberen Lichtquellen-Kühlkörpers,
  • Fig. 6 die Darstellung aus Figur 5 mit abgenommenem oberen Lichtquellen-Kühlkörper,
  • Fig. 7 den Reflektor-Träger im Bereich der Führungsnuten für den oberen und den unteren Lichtquellen-Kühlkörper, und
  • Fig. 8 den Reflektor-Träger im Bereich der Führungsnuten für einen seitlichen Lichtquellen-Kühlkörper.
The invention is discussed in more detail below with reference to the drawing. In this shows
  • Fig. 1 a schematic front view of a lighting device according to the invention, shown without a reflector carrier,
  • Fig. 2 the lighting device off Figure 1 in a rear view, shown with reflector carrier,
  • Fig. 3 the light source heat sink of the lighting device with LED light sources in a view from the front,
  • Fig. 4 the reflector carrier with the light source heat sinks in a view from behind,
  • Fig. 5 the reflector carrier in the area of the upper light source heat sink,
  • Fig. 6 the representation Figure 5 with the upper light source heat sink removed,
  • Fig. 7 the reflector carrier in the area of the guide grooves for the upper and lower light source heat sinks, and
  • Fig. 8 the reflector carrier in the area of the guide grooves for a side light source heat sink.

Figur 1 zeigt schematisch eine Beleuchtungsvorrichtung 1 für einen Kraftfahrzeugscheinwerfer, wobei die Beleuchtungsvorrichtung 1 in der gezeigten beispielhaften Ausführungsform vier Reflektoren 10, 11, 12, 13 aufweist. Jedem der vier Reflektoren 10, 11, 12, 13 ist jeweils eine Lichtquelle 20, 21, 22, 23 zugeordnet. Figure 1 shows schematically a lighting device 1 for a motor vehicle headlight, the lighting device 1 having four reflectors 10, 11, 12, 13 in the exemplary embodiment shown. A light source 20, 21, 22, 23 is assigned to each of the four reflectors 10, 11, 12, 13.

Bei den Lichtquellen 20, 21, 22, 23 handelt es sich um LED-Lichtquellen sind, wobei jede LED-Lichtquelle 20, 21, 22, 23 zumindest eine Leuchtdiode umfasst.The light sources 20, 21, 22, 23 are LED light sources, each LED light source 20, 21, 22, 23 comprising at least one light-emitting diode.

In dem vorliegenden Beispiel besteht jede LED-Lichtquelle 20, 21, 22, 23 aus einem Chip, auf welchem jeweils 4 Leuchtdioden sitzen. Eine LED-Lichtquelle umfasst in dem vorliegenden Beispiel also jeweils 4 Leuchtdioden.In the present example, each LED light source 20, 21, 22, 23 consists of a chip on which 4 light-emitting diodes are located. In the present example, an LED light source thus comprises 4 light-emitting diodes.

Vorzugsweise sind die unterschiedlichen Reflektoren 10, 11, 12, 13 zugeordneten LED-Lichtquellen 20, 21, 22, 23 getrennt ansteuerbar und ein- bzw. ausschaltbar und/oder dimmbar ist, sodass unterschiedliche Reflektoren mit Licht versorgt und entsprechend unterschiedliche Lichtverteilung aktiviert werden können.The LED light sources 20, 21, 22, 23 assigned to different reflectors 10, 11, 12, 13 are preferably separately controllable and can be switched on or off and / or dimmed so that different reflectors can be supplied with light and correspondingly different light distributions can be activated .

Licht aus der einer einem Reflektor 10, 11, 12, 13 zugeordneten Lichtquelle 20, 21, 22, 23 wird zur Bildung einer Lichtverteilung oder eines Teiles einer Lichtverteilung in einen Bereich vor der Beleuchtungsvorrichtung 1 abgestrahlt. Bei dem gezeigten Beispiel erzeugen der obere und der untere Reflektor 10, 11 zusammen eine Fernlichtverteilung, während die beiden seitlichen Reflektoren 12, 13 zusammen eine Abblendlichtverteilung erzeugen. Die Reflektoren 12, 13 sind als Doppelreflektor ausgebildet, siehe dazu auch die Anmerkungen am Ende der Beschreibung.Light from a light source 20, 21, 22, 23 assigned to a reflector 10, 11, 12, 13 is emitted into an area in front of the lighting device 1 in order to form a light distribution or a part of a light distribution. In the example shown, the upper and lower reflectors 10, 11 together produce a high beam distribution, while the two side reflectors 12, 13 together produce a low beam distribution. The Reflectors 12, 13 are designed as double reflectors, see also the comments at the end of the description.

Die vier Reflektoren 10, 11, 12, 13 sind auf einem Reflektor-Träger 30 angeordnet fix an dem Reflektor-Träger 30 befestigt. "Fix an dem Reflektor-Träger" befestigt bedeutet, dass die Reflektoren in Bezug auf den Träger 30 feststehend angeordnet sind, vorzugsweise sind die Reflektoren dabei direkt an dem Träger 30 befestigt, beispielsweise angeschraubt, wie dies in Figur 2 gut zu erkennen ist.The four reflectors 10, 11, 12, 13 are arranged on a reflector carrier 30 and fixedly attached to the reflector carrier 30. "Fixed to the reflector carrier" means that the reflectors are arranged in a fixed manner with respect to the carrier 30; the reflectors are preferably fastened directly to the carrier 30, for example screwed on, as shown in FIG Figure 2 is easy to see.

Der Reflektor-Träger 30 ist vorzugsweise als Kühlkörper ausgebildet, über welchen die von den Lichtquellen 20, 21, 22, 23 erzeugte Wärme abgeführt werden kann.The reflector carrier 30 is preferably designed as a heat sink, via which the heat generated by the light sources 20, 21, 22, 23 can be dissipated.

Jede der Lichtquellen 20, 21, 22, 23 wiederum ist auf einem eigenen, üblicherweise deutlich kleineren Lichtquellen-Träger 40, 41, 42, 43 angeordnet, wobei diese vier Lichtquellen-Träger 40, 41, 42, 43 vorzugsweise wiederum als (vier) Kühlkörper ausgebildet sind.Each of the light sources 20, 21, 22, 23 in turn is arranged on its own, usually much smaller light source carrier 40, 41, 42, 43, these four light source carriers 40, 41, 42, 43 preferably in turn as (four) Heat sinks are formed.

Figur 3 zeigt noch einmal die vier Lichtquellen-Träger 40, 41, 42, 43 in Alleinstellung in einer Ansicht von Vorne, Figur 4 zeigt die vier Lichtquellen-Träger 40, 41, 42, 43 an dem Reflektor-Träger 30. Erfindungsgemäß sind die Lichtquellen-Träger 40, 41, 42, 43 an dem Reflektor-Träger 30 verschieblich gelagert und in einer definierten Position in Bezug auf den Reflektor-Träger 30 fixierbar. Figure 3 shows once again the four light source carriers 40, 41, 42, 43 in isolation in a view from the front, Figure 4 shows the four light source carriers 40, 41, 42, 43 on the reflector carrier 30. According to the invention, the light source carriers 40, 41, 42, 43 are displaceably mounted on the reflector carrier 30 and in a defined position with respect to the Reflector carrier 30 can be fixed.

Dabei bedeutet allgemein im Rahmen der vorliegenden Erfindung, nicht nur für das vorliegend beschriebene Beispiel, dass die Formulierung, dass ein Lichtquellen-Träger am dem Reflektor-Träger verschieblich gelagert sein, dass der Lichtquellen-Träger in Bezug auf den Reflektor-Träger verschieblich ist, wobei vorzugsweise der Lichtquellen-Träger direkt an dem Reflektor-Träger verschieblich gelagert ist.In general, within the scope of the present invention, not only for the example described here, the formulation that a light source carrier can be displaceably mounted on the reflector carrier means that the light source carrier is displaceable with respect to the reflector carrier, wherein the light source carrier is preferably mounted displaceably directly on the reflector carrier.

In Figur 4 ist die vertikale Richtung (bezogen auf die Einbaulage der Beleuchtungseinheit 1 in ein Fahrzeug), in welcher die Lichtquellen-Träger 40, 41, 42, 43 in dem gezeigten Beispiel verschiebbar sind, mittels Pfeilen eingezeichnet.In Figure 4 the vertical direction (based on the installation position of the lighting unit 1 in a vehicle), in which the light source supports 40, 41, 42, 43 can be displaced in the example shown, is shown by means of arrows.

Im Folgenden ist noch einmal auf die Figuren 3 und 4 sowie 5 - 8 verwiesen:
Um die Lichtquellen-Träger 40, 41, 42, 43 einfach an dem Reflektor-Träger 30 in vertikaler Richtung verschieben zu können, ist vorgesehen, dass der Reflektor-Träger 30 eine Führungsnut 31a, 31b, 31c, 31d, nämlich vorzugsweise genau eine Führungsnut für jeden Lichtquellen-Träger 40, 41, 42, 43 aufweist. Die Führungsnuten 31a, 31b, 31c, 31d sind dabei zweigeteilt, sodass auch von zwei Nuten pro Lichtquellen-Träger gesprochen werden kann.The following is again on the Figures 3 and 4 as well as 5 - 8 referenced:
In order to be able to easily move the light source carriers 40, 41, 42, 43 on the reflector carrier 30 in the vertical direction, it is provided that the reflector carrier 30 has a guide groove 31a, 31b, 31c, 31d, namely preferably exactly one guide groove for each light source carrier 40, 41, 42, 43. The guide grooves 31a, 31b, 31c, 31d are divided into two parts, so that it is also possible to speak of two grooves per light source carrier.

Die Führungsnuten 31a, 31b, 31c, 31d sind dabei jeweils von einer Befestigungsöffnung 50 unterbrochen, über welche der jeweilige Lichtquellen-Träger an dem Reflektor-Träger befestigt werden kann. Bei der Befestigungsöffnung handelt es sich beispielsweise um ein vorgebohrtes Loch oder, wenn der Reflektor-Träger gegossen wird, wird der Reflektor-Träger beim Gießvorgang mit diesem Loch versehen.The guide grooves 31a, 31b, 31c, 31d are each interrupted by a fastening opening 50 via which the respective light source carrier can be fastened to the reflector carrier. The fastening opening is, for example, a pre-drilled hole or, if the reflector carrier is cast, the reflector carrier is provided with this hole during the casting process.

Jeder Lichtquellen-Träger 40, 41, 42, 43 weist an seiner an dem Reflektor-Träger 30 zugewandten bzw. anliegenden Seite einen zu der Führungsnut 31a, 31b, 31c, 31d korrespondierenden Führungszapfen 40', 41', 42', 43' auf, mit welchem der Lichtquellen-Träger in der zugehörigen Nut geführt ist.Each light source carrier 40, 41, 42, 43 has on its side facing or abutting the reflector carrier 30 a guide pin 40 ', 41', 42 ', 43' corresponding to the guide groove 31a, 31b, 31c, 31d , with which the light source carrier is guided in the associated groove.

Auch die Führungszapfen 40', 41', 42', 43' sind durch eine Befestigungsöffnung 51 zum Befestigen des jeweiligen Lichtquellen-Trägers 40, 41, 42, 43 an dem Reflektor-Träger 30 unterbrochen, sodass auch hier davon gesprochen werden kann, dass zwei Zapfen (oder ein unterbrochener Zapfen) pro Lichtquellen-Träger vorgesehen ist. Bei den Befestigungsöffnungen 51 in den Lichtquellen-Trägern 40, 41, 42, 43 handelt es sich vorzugsweise um Langlöcher, die sich in Verschieberichtung des Lichtquellen-Trägers erstrecken, und durch welche Langlöcher der Lichtquellen-Träger mit einer Schraube 52 mit dem Reflektor-Träger 30 in der gewünschten, eingestellten Position fixiert werden kann.The guide pins 40 ', 41', 42 ', 43' are also interrupted by a fastening opening 51 for fastening the respective light source carrier 40, 41, 42, 43 to the reflector carrier 30, so that here, too, it can be said that two pegs (or an interrupted peg) is provided per light source carrier. The fastening openings 51 in the light source carriers 40, 41, 42, 43 are preferably elongated holes that extend in the direction of displacement of the light source carrier, and through which elongated holes the light source carrier is connected to the reflector carrier with a screw 52 30 can be fixed in the desired, set position.

Bei den Schrauben 52 handelt es sich vorzugsweise wie vorstehend erläutert um selbstschneidende Schrauben, welche sich in den Reflektor-Träger bei dem Einschraubvorgang hineinschrauben.The screws 52 are preferably self-tapping screws, as explained above, which screw into the reflector carrier during the screwing-in process.

Durch die Verwendung von in einer Nut geführten Zapfen ist auch gewährleistet, dass ein Verstellen nur in Richtung der Nut möglich ist, während ein Verstellen seitlich dazu ausgeschlossen ist. Durch diese Reduzierung der Freiheitsgrade kann die gewünschte Position rasch eingestellt werden und die Anzahl der unerwünschten Positionierungsmöglichkeiten ist stark reduziert.The use of pins guided in a groove also ensures that an adjustment is only possible in the direction of the groove, while an adjustment to the side is excluded. As a result of this reduction in the degrees of freedom, the desired position can be set quickly and the number of undesired positioning options is greatly reduced.

Die Führungsnuten 31a, 31b, 31c, 31d sind länglich ausgebildet und erstrecken sich geradlinig in vertikaler Richtung, ebenso wie die Führungszapfen.The guide grooves 31a, 31b, 31c, 31d are elongated and extend in a straight line in the vertical direction, as are the guide pins.

Die Reflektoren werden bereits vor der Einstellung der Lichtquellen an dem Reflektor-Träger befestigt, sodass es keine Krafteinwirkungen beim Einstellen der Lichtquellen auf die Reflektoren und somit kein unerwünschtes Verstellen derselben auftritt.The reflectors are already attached to the reflector carrier before the setting of the light sources, so that there is no force acting on the reflectors when setting the light sources and thus no undesired adjustment of the same.

Der Reflektor-Träger, insbesondere in Form eines Kühlkörpers, kann als Metallteil, beispielsweise als Aluminium-Druckgussteil ausgebildet sein, sodass die Führungsnuten sehr exakt ausgeführt werden können. Entsprechend kann die Position der Lichtquellen exakt eingestellt werden und auch beim Befestigen verändert sich die Lage der Lichtquellen in Bezug auf den jeweils zugeordneten Reflektor nicht mehr.The reflector carrier, in particular in the form of a heat sink, can be designed as a metal part, for example as an aluminum die-cast part, so that the guide grooves can be made very precisely. Correspondingly, the position of the light sources can be set exactly and the position of the light sources in relation to the respectively assigned reflector no longer changes when they are fastened.

Außerdem können bei der vorliegenden Erfindung auch Doppel- oder Mehrfachreflektoren zum Einsatz kommen. Üblicherweise müssen Reflektoren separat eingestellt werden, was bei Doppel- und Mehrfachreflektoren nicht möglich ist. Durch die erfindungsgemäße Einstellung der Lichtquellen müssen die Reflektoren nicht mehr eingestellt werden, sodass auch Doppel- und Mehrfachreflektoren verwendet werden können.In addition, double or multiple reflectors can also be used in the present invention. Usually reflectors have to be adjusted separately, which is not possible with double and multiple reflectors. As a result of the adjustment of the light sources according to the invention, the reflectors no longer have to be adjusted, so that double and multiple reflectors can also be used.

Bei der vorliegenden Erfindung sind, siehe insbesondere Figur 1, die beiden Abblendreflektoren 12, 13 als Doppelreflektor ausgebildet, d.h. die beiden Reflektoren 12, 13 sind in einem Bauteil ausgebildet.In the present invention, see in particular Figure 1 , the two dimming reflectors 12, 13 designed as double reflectors, ie the two reflectors 12, 13 are formed in one component.

Prinzipiell ist es denkbar, dass auch zwei oder mehr Reflektor-Träger für jeweils einen oder mehrere Reflektoren vorgesehen sein können, beispielsweise könnte jeder Lichtquellen-Träger auf einem eigenen Reflektor-Träger verschieblich gelagert sein und die vier Reflektor-Träger sind fix miteinander verbunden, konstruktiv einfacher ist es allerdings in der Regel, wenn wie gezeigt genau ein Reflektor-Träger vorgesehen ist.In principle, it is conceivable that two or more reflector carriers can be provided for one or more reflectors each, for example each light source carrier could be mounted displaceably on its own reflector carrier and the four reflector carriers are permanently connected to one another, but it is generally simpler in terms of construction if exactly one reflector carrier is provided as shown.

Vorzugsweise ist schließlich noch vorgesehen, dass die Oberflächen der Führungsnuten, an welchen die Lichtquellen-Träger verschieblich geführt sind, gefräst und wenn notwendig deren Oberflächen behandelt sind, um besonders ebene Flächen zu erhalten, sodass sich die Lichtquellen-Träger gut verschieben lassen.Finally, it is preferably also provided that the surfaces of the guide grooves, on which the light source carriers are displaceably guided, are milled and, if necessary, their surfaces are treated in order to obtain particularly flat surfaces so that the light source carriers can be moved easily.

Das auf und ab Verschieben der Lichtquellen 20, 21 in vertikaler Richtung (d.h. auf und ab; die Richtungen beziehen sich immer auf die Einbaulage des Scheinwerfers), welche den Fernlichtreflektoren 10, 11 zugeordnet sind (d.h., ihr Licht auf diese Reflektoren abstrahlen), führt zu einer Größenänderung des Fernlichtspots. Durch ein Verschieben der den Fernlichtreflektoren 10, 11 zugeordneten Lichtquellen 20, 21 kann also die Größe der Fernlichtverteilung optimal angepasst werden.Moving the light sources 20, 21 up and down in the vertical direction (that is, up and down; the directions always refer to the installation position of the headlamp), which are assigned to the high beam reflectors 10, 11 (that is, they emit their light onto these reflectors), leads to a change in size of the high beam spot. By shifting the light sources 20, 21 assigned to the high beam reflectors 10, 11, the size of the high beam distribution can thus be optimally adapted.

Das vertikale (auf und ab) Verschieben der Lichtquellen 22, 23 der Abblendlichtreflektoren primär 12, 13 zu einer Fokussierung bzw. Defokussierung der Hell-Dunkel-Grenze der mit diesen Reflektoren erzeugten Abblendlichtverteilung und sekundär zu einer geringen auf und ab Bewegung der Lichtverteilung, sodass entsprechend über das vertikale Verschieben dieser Lichtquellen 12, 13 die Lage der Abblendlichtverteilung und die Schärfe der Hell-Dunkel-Grenze eingestellt werden kann.The vertical (up and down) displacement of the light sources 22, 23 of the low beam reflectors primarily 12, 13 to focus or defocus the light-dark border of the low beam distribution generated with these reflectors and secondarily to a slight up and down movement of the light distribution, so that The position of the low-beam light distribution and the sharpness of the light-dark boundary can be adjusted accordingly via the vertical displacement of these light sources 12, 13.

Die oben genannten Effekte wurden an Hand des konkreten Ausführungsbeispiels mit vier Reflektoren erörtert, sind aber nicht auf diese konkrete Anzahl beschränkt. Es können auch mehr Reflektoren vorgesehen sein, und die Effekte ergeben sich auch, wenn etwa nur ein Fernlichtreflektor mit zugeordneter, vertikal verschiebbarer Lichtquellen .The above-mentioned effects were discussed on the basis of the specific exemplary embodiment with four reflectors, but are not limited to this specific number. More reflectors can also be provided, and the effects also result if, for example, only one high beam reflector with associated, vertically displaceable light sources.

Claims (13)

  1. Illumination device (1) for a motor vehicle headlamp, the lighting device (1) having at least one reflector (10, 11, 12, 13), and at least one light source (20, 21, 22, 23) being assigned to the at least one reflector (10, 11, 12, 13), and light being emitted from the at least one light source (20, 21, 22, 23) via the reflector (10, 11, 12, 13) for forming a light distribution or a part of a light distribution into an area in front of the illumination device (1), wherein the illumination device (1) comprises exactly one reflector carrier (30), and wherein the at least one light source (20, 21, 22, 23) is arranged on at least one light source carrier (40, 41, 42, 43), and wherein the at least one light source carrier (40, 41, 42, 43) is displaceably mounted on the reflector carrier (30) and can be fixed in a defined position with respect to the reflector carrier (30), two or more reflectors (10, 11, 12, 13) being provided, each reflector (10, 11, 12, 13) being provided with precisely one light source carrier (40, 41, 42, 43) with in each case at least one light source carrier (40, 41, 42, 43) with at least one light source (20, 21, 22, 23) in each case is assigned, and the two or more reflectors (10, 11, 12, 13) being fixedly fastened to the reflector carrier (30), all the light source carriers (40, 41, 42, 43) being mounted displaceably with respect to the reflector carrier (30) and being capable of being fixed, the reflector carrier (30) for the at least one light source carrier (40, 41, 42, 43) has at least one guide groove (31a, 31b, 31c, 31d)/at least one guide pin on which the light source carrier (40, 41, 42, 43) is guided in a displaceable manner, and the at least one light source carrier (40, 41, 42, 43) is guided in a displaceable manner with respect to the reflector carrier (30) at least one light source carrier (40, 41, 42, 43) comprises at least one corresponding guide pin (40', 41', 42', 43') / at least one corresponding guide groove, characterized in that the at least one guide groove (31a, 31b, 31c, 31d) and the at least one guide pin (40', 41', 42', 43') are interrupted by a fastening opening (50, 51) for fastening the light source carrier (40, 41, 42, 43) to the reflector carrier (30), the fastening opening (51) in the at least one light source carrier (40, 41, 42, 43) being formed as an elongated hole, two reflectors each being designed as a dipped beam reflector, a double reflector being formed by the two dipped beam reflectors in one component, for producing a dipped beam distribution, the at least one light source carrier (40, 41, 42, 43) being vertically displaceable with respect to the reflector carrier (40, 41, 42, 43) in the installation position of the lighting device.
  2. Illumination device according to claim 1, characterized in that the reflector carrier (30) is formed as a main heat sink (30).
  3. Illumination device according to claim 1 or 2, characterized in that the at least one light source carrier (40, 41, 42, 43) is designed as a light source heat sink (40, 41, 42, 43) is formed.
  4. Illumination device according to any one of claims 1 to 3, characterized in that the at least one guide groove (31a, 31b, 31c, 31d) is provided on the reflector carrier (30) and the at least one corresponding guide pin (40', 41', 42', 43') is arranged on the at least one light source carrier (40, 41, 42, 43).
  5. Illumination device according to claim 4, characterized in that the at least one guide groove (31a, 31b, 31c, 31d) is elongated and extends in a straight line.
  6. Illumination device according to claim 5, characterized in that the at least one guide groove (31a, 31b, 31c, 31d) is arranged extending vertically in the installation position of the lighting device.
  7. Illumination device according to any one of claims 1 to 6, characterized in that the at least one guide pin (40', 41', 42', 43') is elongated and rectilinear, extending in the direction of the corresponding guide groove (31a, 31b, 31c, 31d).
  8. Illumination device according to one of claims 1 to 7, characterized in that for each light source carrier (40, 41, 42, 43) exactly one guide groove (31a, 31b, 31c, 31d) and exactly one corresponding guide pin (40', 41', 42', 43') is provided.
  9. Illumination device according to any one of claims 1 to 8, characterized by exactly four reflectors (10, 11, 12, 13) and exactly four corresponding light source carriers (40, 41, 42, 43).
  10. Illumination device according to any one of claims 1 to 9, characterized in that the light sources (20, 21, 22, 23) are LED light sources, each LED light source (20, 21, 22, 23) comprises at least one, for example exactly one, light emitting diode.
  11. Illumination device according to claim 10, characterized in that each LED light source (20, 21, 22, 23) or at least the LED light sources (20, 21, 22, 23) of different reflectors (10, 11, 12, 13) can be controlled separately and can be switched on or off and/or dimmed, preferably each light emitting diode of an LED light source can be controlled separately and can be switched on or off and/or dimmed.
  12. Illumination device according to one of claims 1 to 11, characterized in that at least one of the reflectors is a main beam reflector (10, 11) for generating a main beam distribution or part of a main beam distribution.
  13. Vehicle headlamp having at least one lighting device according to any one of the Claims 1 to 12.
EP14714915.7A 2013-03-07 2014-03-04 Lighting device for a vehicle headlight Active EP2964486B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50158/2013A AT514022B1 (en) 2013-03-07 2013-03-07 Lighting device for a vehicle headlight and vehicle headlights
PCT/AT2014/050050 WO2014134649A1 (en) 2013-03-07 2014-03-04 Lighting device for a vehicle headlight

Publications (2)

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EP2964486A1 EP2964486A1 (en) 2016-01-13
EP2964486B1 true EP2964486B1 (en) 2021-06-30

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EP14714915.7A Active EP2964486B1 (en) 2013-03-07 2014-03-04 Lighting device for a vehicle headlight

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US (1) US9671080B2 (en)
EP (1) EP2964486B1 (en)
JP (1) JP6122513B2 (en)
CN (1) CN105008180B (en)
AT (1) AT514022B1 (en)
WO (1) WO2014134649A1 (en)

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CN105008180B (en) 2017-04-05
US20160010823A1 (en) 2016-01-14
AT514022A1 (en) 2014-09-15
EP2964486A1 (en) 2016-01-13
WO2014134649A1 (en) 2014-09-12
JP6122513B2 (en) 2017-04-26
US9671080B2 (en) 2017-06-06
JP2016508662A (en) 2016-03-22
AT514022B1 (en) 2015-11-15
CN105008180A (en) 2015-10-28

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