EP2964486A1 - Lighting device for a vehicle headlight - Google Patents

Lighting device for a vehicle headlight

Info

Publication number
EP2964486A1
EP2964486A1 EP14714915.7A EP14714915A EP2964486A1 EP 2964486 A1 EP2964486 A1 EP 2964486A1 EP 14714915 A EP14714915 A EP 14714915A EP 2964486 A1 EP2964486 A1 EP 2964486A1
Authority
EP
European Patent Office
Prior art keywords
light source
reflector
lighting device
carrier
exactly
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
EP14714915.7A
Other languages
German (de)
French (fr)
Other versions
EP2964486B1 (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
Zizala Lichtsysteme GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zizala Lichtsysteme GmbH filed Critical Zizala Lichtsysteme GmbH
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

Links

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 associated with the at least one reflector, and wherein light from the at least one light source via the reflector to form a light distribution or a part of a light distribution in an area is emitted in front of the lighting device.
  • the invention 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 for generating main light distribution, such as, for example, high beam distribution, dimmed light distributions, e.g. Dipped beam, etc. used.
  • main light distribution such as, for example, high beam distribution, dimmed light distributions, e.g. Dipped beam, etc. used.
  • the light from one or more LED light sources via one or more reflectors in an area in front of the motor vehicle, in which the vehicle headlamp is installed, radiated and illuminate the area in front of the vehicle.
  • the LED light source (s) is or are arranged on a carrier, generally a heat sink.
  • the LED light source (s) sits or sit on an LED board, which in turn is arranged on the carrier, for example glued to it.
  • the associated reflector is positioned accordingly and then to the Support or fixed with respect to the carrier, usually screwed to this or with another fixed component.
  • the lighting device has at least one, preferably exactly one reflector-carrier, and wherein the at least one reflector fixed to the at least a reflector support is attached, 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 slidably mounted on the reflector support and fixable in a defined position with respect to the reflector support is.
  • the reflector is no longer arranged with respect to the fixed light source, but the reflector is initially mounted on a reflector support, which may be formed solid, and then the light source, which sits on a light source carrier, positioned accordingly and finally fixed the light source carrier with respect to the reflector support.
  • a reflector support which may be formed solid
  • the light source which sits on a light source carrier, positioned accordingly and finally fixed the light source carrier with respect to the reflector support.
  • both the reflector carrier and the light source carrier can be designed as solid components or are preferably of solid construction, there are no adverse effects on the photograph when these components are fixed to one another.
  • the at least one 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 at least one light source carrier - in the installation position of the lighting device - with respect to the at least one reflector support is vertically displaceable.
  • the at least one reflector support 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 elongate and extends in a straight line.
  • the at least one guide groove is arranged to extend vertically in the installed position of the lighting device.
  • the at least one guide pin is elongate and rectilinear, extending in the direction of the corresponding guide groove extending.
  • two (or more) pins guided in the guide groove may be provided which do not have an elongated extension but are "merely" designed to be projecting, for example formed as rounded elevations.
  • 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.
  • a guide groove (or exactly one guide groove) and a guide pin (or exactly one guide pin) are thus divided into two parts.
  • the light source carrier can be connected to its central region and thus as evenly as possible with the reflector support, in particular press this.
  • each reflector is associated with exactly one light source carrier, each with at least one light source, and wherein the light source carriers are displaceable and fixable with respect to the at least one reflector support.
  • the lighting device comprises exactly four reflectors and exactly four associated light source carrier.
  • the light sources are LED light sources, wherein each LED light source comprises at least one, for example exactly one light-emitting diode.
  • each LED light source or at least the LED light sources of different reflectors separately controllable and on or off and / or dimmable, preferably each LED of a LED light source can be controlled separately and switched on and off and / or 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.
  • At least one of the reflectors can be a low-beam reflector for producing a low beam distribution or a part of a low beam distribution.
  • FIG. 1 is a schematic front view of a lighting device according to the invention, shown without reflector-carrier,
  • FIG. 2 shows the illumination device from FIG. 1 in a rear view, shown with a reflector carrier, FIG.
  • FIG. 5 shows the reflector carrier in the region of the upper light source heat sink
  • 6 shows the illustration from FIG. 5 with the upper light source heat sink removed
  • FIG 8 shows the reflector carrier in the region of the guide grooves for a lateral light source heat sink.
  • FIG. 1 schematically shows 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. Each of the four reflectors 10, 11, 12, 13 is assigned a respective light source 20, 21, 22, 23.
  • 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 each of which 4 LEDs sit.
  • An LED light source in the present example thus comprises in each case 4 light-emitting diodes.
  • the different reflectors 10, 11, 12, 13 associated LED light sources 20, 21, 22, 23 separately controllable and on or off and / or dimmable, so that different reflectors can be supplied with light and correspondingly different light distribution can be activated ,
  • Light from the one of a reflector 10, 11, 12, 13 associated light source 20, 21, 22, 23 is emitted to form a light distribution or a part of a light distribution in a region in front of the lighting device 1.
  • the upper and lower reflectors 10, 11 together produce a high beam distribution
  • the two lateral reflectors 12, 13 together produce a low beam distribution.
  • the Reflectors 12, 13 are designed as double reflector, see also the notes at the end of the description.
  • the four reflectors 10, 11, 12, 13 are fixedly mounted on a reflector support 30 fixed to the reflector support 30.
  • "Fixed to the reflector support” means that the reflectors are fixed with respect to the support 30 , Preferably, the reflectors are attached directly to the carrier 30, for example screwed, as can be seen in Figure 2 well.
  • the reflector support 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 again as (four) Heat sink are formed.
  • Figure 3 shows once again the four light source carrier 40, 41, 42, 43 alone in a view from the front
  • Figure 4 shows the four light source carrier 40, 41, 42, 43 on the reflector carrier 30.
  • Light source carrier 40, 41, 42, 43 slidably mounted on the reflector support 30 and fixed in a defined position with respect to the reflector support 30.
  • a light source carrier be slidably mounted on the reflector carrier, that the light source carrier is displaceable with respect to the reflector carrier, wherein preferably the light source carrier is mounted displaceably directly on the reflector carrier.
  • FIG. 4 the vertical direction (relative to the mounting position of the lighting unit 1 in a vehicle), in which the light source supports 40, 41, 42, 43 are displaceable in the example shown, is indicated by means of arrows.
  • FIGS. 3 and 4 and FIGS. 5 to 8 Reference is again made below to FIGS. 3 and 4 and FIGS. 5 to 8:
  • the reflector support 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, 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 attachment opening is, for example, a predrilled hole or, if the reflector support is cast, the reflector support is provided with this hole during the casting process.
  • Each light source carrier 40, 41, 42, 43 has on its side facing the reflector support 30 or side adjacent to the guide groove 31a, 31b, 31c, 31d guide pin 40 ', 41', 42 ', 43' , with which the light source carrier is guided in the associated groove.
  • the guide pins 40 ', 41', 42 ', 43' are interrupted by a mounting opening 51 for attaching the respective light source carrier 40, 41, 42, 43 to the reflector support 30, so that it can also be said that two pins (or a broken pin) per light source carrier is provided.
  • the attachment 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 slots the light source carrier with a screw 52 with the reflector carrier 30 can be fixed in the desired, set position.
  • the screws 52 are preferably, as explained above, self-tapping screws which screw into the reflector carrier during the screwing operation.
  • the screws 52 are preferably, as explained above, self-tapping screws which screw into the reflector carrier during the screwing operation.
  • the guide grooves 31a, 31b, 31c, 31d are elongated and extend in a straight line in the vertical direction, as well as the guide pins.
  • the reflectors are attached to the reflector support prior to the adjustment of the light sources, so that there are no force effects when setting the light sources on the reflectors and thus no unwanted adjustment thereof occurs.
  • the reflector-carrier in particular in the form of a heat sink, may be formed as a metal part, for example as an aluminum die-cast part, so that the guide grooves can be made very accurately. Accordingly, the position of the light sources can be set exactly and even when mounting the position of the light sources with respect to the respective associated reflector no longer changes.
  • double or multiple reflectors can also be used in the present invention.
  • reflectors must be set separately, which is not possible with double and multiple reflectors.
  • the inventive adjustment of the light sources, the reflectors must not be adjusted, so that double and multiple reflectors can be used.
  • each light source could Carrier be slidably mounted on its own reflector-carrier and the four reflector-carrier are fixed to each other, structurally simpler, however, it is usually when, as shown exactly one reflector-carrier is provided.
  • 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 well.
  • Up and down movement of the light sources 20, 21 in the vertical direction ie, up and down, the directions always relate to the mounting position of the headlamp) associated with the high beam reflectors 10, 11 (ie, emit their light on these reflectors), leads to a change in the size of the high beam spot.

Abstract

The invention relates to a lighting device (1) for a motor vehicle headlight. The lighting device (1) has at least one reflector (10, 11, 12, 13), and at least one light source (20, 21, 22, 23) is paired with the at least one reflector (10, 11, 12, 13). Light from the at least one light source (20, 21, 22, 23) is radiated into a region in front of the lighting device (1) by means of the reflector (10, 11, 12, 13) in order to form a light distribution or a part of a light distribution. The lighting device (1) has at least one, preferably precisely one reflector support (30), and the at least one reflector (10, 11, 12, 13) is attached to the at least one reflector support (30) in a fixed manner. The at least one light source (20, 21, 22, 23) is arranged on at least one light source support (40, 41, 42, 43), and the at least one light source support (40, 41, 42, 43) is movably mounted on the reflector support (30) and can be fixed in a defined position relative to the reflector support (30).

Description

BELEUCHTUNGSVORRICHTUNG FÜR EINEN FAHRZEUGSCHEINWERFER  LIGHTING DEVICE FOR A VEHICLE HEADLAMP
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 associated with the at least one reflector, and wherein light from the at least one light source via the reflector to form a light distribution or a part of a light distribution in an area is emitted in front of the lighting device.
Weiters betrifft die Erfindung einen Fahrzeugscheinwerfer mit zumindest einer solchen Beleuchtungsvorrichtung. Furthermore, the invention 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 headlamp design, LED light sources, which consist of one or more light emitting diodes, are increasingly used for generating main light distribution, such as, for example, high beam distribution, dimmed light distributions, e.g. Dipped beam, etc. used. Usually, the light from one or more LED light sources via one or more reflectors in an area in front of the motor vehicle, in which the vehicle headlamp is installed, radiated and illuminate 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 realize a law-compliant light distribution, it is important that the reflector and the associated light source (s) are correctly positioned relative to each other. Especially with the use of LED light sources, this topic is even more important, since relatively small deviations from the desired position can already lead to unwanted and / or impermissible effects in the photograph.
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. Usually, the LED light source (s) is or are arranged on a carrier, generally a heat sink. The LED light source (s) sits or sit on an LED board, which in turn is arranged on the carrier, for example glued to it. The associated reflector is positioned accordingly and then to the Support or fixed with respect to the carrier, usually screwed to this or with 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 found that it can come through the fastening process, in particular by tightening the reflector and the forces occurring in a distortion of the reflector or there is generally in the fastening process to an unintentional adjustment of the reflector from the optimum position. This has a detrimental effect on the photograph obtained, partly with the result that the photograph no longer meets the legal requirements.
Es ist eine Aufgabe der Erfindung, eine Beleuchtungsvorrichtung bzw. einen Kraftfahrzeugscheinwerfer zu schaffen, bei welchem auf einfache 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 provide a lighting device or a motor vehicle headlight, in which a reliable adjustment of reflector and associated light source or associated light sources is possible in a simple manner, wherein the disadvantages described above are eliminated.
Diese Aufgabe wird mit einer eingangs erwähnten Beleuchtungs Vorrichtung bzw. mit einem Fahrzeugscheinwerfer, welcher zumindest eine solche Beleuchtungsvorrichtung aufweist, erfindungsgemäß dadurch gelöst, dass die Beleuchtungsvorrichtung zumindest einen, vorzugsweise genau einen Reflektor-Träger aufweist, und wobei der zumindest eine Reflektor fix an dem zumindest einen 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. This object is achieved with an aforementioned lighting device or with a vehicle headlamp, which has at least one such lighting device, according to the invention that the lighting device has at least one, preferably exactly one reflector-carrier, and wherein the at least one reflector fixed to the at least a reflector support is attached, 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 slidably mounted on the reflector support and fixable in a defined position with respect to the reflector support is.
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 Einfachheit halber 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 with respect to the fixed light source, but the reflector is initially mounted on a reflector support, which may be formed solid, and then the light source, which sits on a light source carrier, positioned accordingly and finally fixed the light source carrier with respect to the reflector support. For the sake of simplicity, here is always the singular (the reflector, the light source, etc.) the speech, it However, it is understood by those skilled in the art that multiple reflectors, light sources, light source carriers, etc. may 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. Due to the fact that both the reflector carrier and the light source carrier can be designed as solid components or are preferably of solid construction, there are no adverse effects on the photograph 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 zumindest eine Reflektor-Träger als Haupt-Kühlkörper ausgebildet ist. In order to be able to dissipate the heat generated by the light sources optimally, it has proved to be expedient if the at least one 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. Likewise, it has 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 or carrier in addition to the optimal dissipation of the resulting heat nor the advantage that heatsinks are usually solid metal body, which are thus also optimally suitable for fixing together 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 zumindest einen Reflektor-Träger vertikal verschiebbar ist. In general, a setting of the photo 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 installation position of the lighting device - with respect to the at least one reflector support is vertically displaceable.
Bei einer konkreten Ausführungsform, welche sich einfach herstellen lässt und eine exakte Einstellung erlaubt und ein stabiles Positionieren in der Endposition ermöglicht, ist vorgesehen, dass der zumindest eine 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. 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. In a specific embodiment, which can be produced easily and allows exact adjustment and enables stable positioning in the end position, it is provided that the at least one reflector support 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. Through the use of guided in a groove pin is also ensured that an adjustment is possible only in the direction of the groove, while an adjustment laterally excluded. By reducing the degrees of freedom, the desired position can be quickly adjusted and the number of undesired positioning possibilities 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. Preferably, it is 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 a simple adjustment, it is advantageously provided that the at least one guide groove is elongate 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. For adjusting the light image in the height direction, it is provided that the at least one guide groove is arranged 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 provided with advantage that the at least one guide pin is elongate and rectilinear, extending in the direction of the corresponding guide groove extending.
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. However, instead of an elongate guide pin, two (or more) pins guided in the guide groove may be provided which do not have an elongated extension but are "merely" designed to be projecting, for example formed as rounded elevations.
Typischerweise ist vorgesehen, dass für jeden Lichtquellen-Träger genau eine Führungsnut und genau ein korrespondierender Führungszapfen vorgesehen ist. Typically, it is provided that exactly one guide groove and exactly one corresponding guide pin is provided for each light source carrier.
Um ein gleichmäßiges und zuverlässiges Fixieren eines Lichtquellen-Trägers an dem Reflektor-Träger zu ermöglichen, ist bei einer konkreten Ausführungsform 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 uniform and reliable fixing of a light source carrier to the reflector support is in a specific embodiment of the invention provided 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.
Eine Führungsnut (bzw. die genau eine Führungsnut) sowie ein Führungszapfen (bzw. genau ein Führungszapfen) sind somit zweigeteilt. A guide groove (or exactly one guide groove) and a guide pin (or exactly 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 to its central region and thus as evenly as possible with the reflector support, in particular press this.
Bei einer konkreten Ausführungsform 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 zumindest einen Reflektor-Träger verschiebbar und fixierbar sind. In a specific embodiment of the invention, two or more reflectors are provided, each reflector is associated with exactly one light source carrier, each with at least one light source, and wherein the light source carriers are displaceable and fixable with respect to the at least one reflector support.
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. Furthermore, it is provided that exactly one reflector carrier is provided, and that all light source carriers are displaceably mounted and fixable on the one reflector carrier.
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. In principle, it is conceivable that two or more reflector support can be provided for one or more reflectors, but it is structurally simpler, as a rule, if exactly one reflector support 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, e.g. for generating a high beam distribution and a dimmed light distribution, such as a low beam distribution provided with the lighting device, that the lighting device comprises exactly four reflectors and exactly four associated light source carrier.
Mit Vorteil ist vorgesehen, dass die Lichtquellen LED-Lichtquellen sind, wobei jede LED- Lichtquelle zumindest eine, beispielsweise genau eine Leuchtdiode umfasst. 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. It is advantageously provided that the light sources are LED light sources, wherein each LED light source comprises at least one, for example exactly one light-emitting diode. In particular, it is advantageous if each LED light source or at least the LED light sources of different reflectors separately controllable and on or off and / or dimmable, preferably each LED of a LED light source can be controlled separately and switched on and off and / or 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.
Alternativ oder zusätzlich zu dieser bevorzugten Ausführungsform kann vorgesehen sein, dass zumindest einer der Reflektoren ein Abblendlichtreflektor zur Erzeugung einer Abblendlichtverteilung oder eines Teiles einer Abblendlichtverteilung ist. As an alternative or in addition to this preferred embodiment, provision can be made for at least one of the reflectors to be a low-beam reflector for producing a low beam distribution or a part of a low 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. In particular, when using low beam and / or high beam distribution, special advantages arise in connection with the vertical adjustability of the light sources, as will be discussed in more detail in the figure description.
Im Folgenden ist die Erfindung an Hand der Zeichnung näher erörtert. In dieser zeigt In the following the invention is discussed in more detail with reference to the drawing. In this shows
Fig. 1 eine schematische Vorderansicht einer erfindungsgemäßen Beleuchtungsvorrichtung, dargestellt ohne Reflektor-Träger, 1 is a schematic front view of a lighting device according to the invention, shown without reflector-carrier,
Fig. 2 die Beleuchtungsvorrichtung aus Figur 1 in einer Rückansicht, dargestellt mit Reflektor-Träger, 2 shows the illumination device from FIG. 1 in a rear view, shown with a reflector carrier, FIG.
Fig. 3 die Lichtquellen-Kühlkörper der Beleuchtungsvorrichtung mit LED-Lichtquellen in einer Ansicht von vorne, 3 shows the light source heat sinks of the lighting device with LED light sources in a front view,
Fig. 4 den Reflektor-Träger mit den Lichtquellen-Kühlkörpern in einer Ansicht von hinten, 4 shows the reflector carrier with the light source heat sinks in a view from behind,
Fig. 5 den Reflektor-Träger im Bereich des oberen Lichtquellen-Kühlkörpers, Fig. 6 die Darstellung aus Figur 5 mit abgenommenem oberen Lichtquellen-Kühlkörper, 5 shows the reflector carrier in the region of the upper light source heat sink, 6 shows the illustration from FIG. 5 with the upper light source heat sink removed,
Fig. 7 den Reflektor-Träger im Bereich der Führungsnuten für den oberen und den unteren Lichtquellen-Kühlkörper, und 7 shows the reflector carrier in the region of the guide grooves for the upper and the lower light source heat sink, and
Fig. 8 den Reflektor-Träger im Bereich der Führungsnuten für einen seitlichen Lichtquellen- Kühlkörper. 8 shows the reflector carrier in the region of the guide grooves for a lateral 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. FIG. 1 schematically shows 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. Each of the four reflectors 10, 11, 12, 13 is assigned a respective light source 20, 21, 22, 23.
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 each of which 4 LEDs sit. An LED light source in the present example thus comprises in each case 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. Preferably, the different reflectors 10, 11, 12, 13 associated LED light sources 20, 21, 22, 23 separately controllable and on or off and / or dimmable, so that different reflectors can be supplied with light and correspondingly different light distribution 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 the one of a reflector 10, 11, 12, 13 associated light source 20, 21, 22, 23 is emitted to form a light distribution or a part of a light distribution in a region in front of the lighting device 1. In the example shown, the upper and lower reflectors 10, 11 together produce a high beam distribution, while the two lateral reflectors 12, 13 together produce a low beam distribution. The Reflectors 12, 13 are designed as double reflector, see also the notes 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 fixedly mounted on a reflector support 30 fixed to the reflector support 30. "Fixed to the reflector support" means that the reflectors are fixed with respect to the support 30 , Preferably, the reflectors are attached directly to the carrier 30, for example screwed, as can be seen in Figure 2 well.
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 support 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 again as (four) Heat sink 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 carrier 40, 41, 42, 43 alone in a view from the front, Figure 4 shows the four light source carrier 40, 41, 42, 43 on the reflector carrier 30. According to the invention Light source carrier 40, 41, 42, 43 slidably mounted on the reflector support 30 and fixed in a defined position with respect to the reflector support 30.
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. It generally means in the context of the present invention, not only for the example described here, that the formulation that a light source carrier be slidably mounted on the reflector carrier, that the light source carrier is displaceable with respect to the reflector carrier, wherein preferably the light source carrier is 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. Im Folgenden ist noch einmal auf die Figuren 3 und 4 sowie 5 - 8 verwiesen: In FIG. 4, the vertical direction (relative to the mounting position of the lighting unit 1 in a vehicle), in which the light source supports 40, 41, 42, 43 are displaceable in the example shown, is indicated by means of arrows. Reference is again made below to FIGS. 3 and 4 and FIGS. 5 to 8:
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. 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. In order to be able to displace the light source carriers 40, 41, 42, 43 simply on the reflector support 30 in the vertical direction, it is provided that the reflector support 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, 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 attachment opening is, for example, a predrilled hole or, if the reflector support is cast, the reflector support 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 the reflector support 30 or side adjacent to the guide groove 31a, 31b, 31c, 31d guide pin 40 ', 41', 42 ', 43' , 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 interrupted by a mounting opening 51 for attaching the respective light source carrier 40, 41, 42, 43 to the reflector support 30, so that it can also be said that two pins (or a broken pin) per light source carrier is provided. The attachment 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 slots the light source carrier with a screw 52 with the reflector carrier 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. 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 screws 52 are preferably, as explained above, self-tapping screws which screw into the reflector carrier during the screwing operation. Through the use of guided in a groove pin is also ensured that an adjustment is possible only in the direction of the groove, while an adjustment laterally excluded. By reducing the degrees of freedom, the desired position can be quickly adjusted and the number of undesired positioning possibilities 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 well as 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 attached to the reflector support prior to the adjustment of the light sources, so that there are no force effects when setting the light sources on the reflectors and thus no unwanted adjustment thereof occurs.
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, may be formed as a metal part, for example as an aluminum die-cast part, so that the guide grooves can be made very accurately. Accordingly, the position of the light sources can be set exactly and even when mounting the position of the light sources with respect to the respective associated reflector no longer changes.
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 must be set separately, which is not possible with double and multiple reflectors. The inventive adjustment of the light sources, the reflectors must not be adjusted, so that double and multiple reflectors can 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 Abblendreflektoren 12, 13 formed as a double reflector, i. 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, for example, each light source could Carrier be slidably mounted on its own reflector-carrier and the four reflector-carrier are fixed to each other, structurally simpler, however, it is usually when, as shown exactly one reflector-carrier is provided.
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 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 well.
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. Up and down movement of the light sources 20, 21 in the vertical direction (ie, up and down, the directions always relate to the mounting position of the headlamp) associated with the high beam reflectors 10, 11 (ie, emit their light on these reflectors), leads to a change in the size of the high beam spot. By shifting the high-beam reflectors 10, 11 associated light sources 20, 21 so the size of the high beam distribution can be optimally adjusted.
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) shifting of the light sources 22, 23 of the low-beam reflectors primarily 12, 13 to focus or defocus the cut-off of the low beam generated with these reflectors and secondarily to a small up and down movement of the light distribution, so according to the vertical displacement of these light sources 12, 13, the position of the low-beam light distribution and the sharpness of the cut-off line can be adjusted.
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 und/ oder ein Abblendlichtreflektor mit zugeordneter, vertikal verschiebbarer Lichtquelle vorgesehen ist/ sind. The above effects have been discussed with reference to the concrete embodiment with four reflectors, but are not limited to this specific number. It can also be provided more reflectors, and the effects also arise if, for example, only a high beam reflector with associated, vertically movable light sources and / or a low beam reflector with associated, vertically displaceable light source is / are provided.

Claims

PATENTANSPRÜCHE
1. Beleuchtungsvorrichtung (1) für einen Kraftfahrzeugscheinwerfer, wobei die Beleuchtungsvorrichtung (1) zumindest einen Reflektor (10, 11, 12, 13) aufweist, und wobei dem zumindest einen Reflektor (10, 11, 12, 13) zumindest eine Lichtquelle (20, 21, 22, 23) zugeordnet ist, und wobei Licht aus der zumindest einen Lichtquelle (20, 21, 22, 23) über den Reflektor (10, 11, 12, 13) zur Bildung einer Lichtverteilung oder eines Teiles einer Lichtverteilung in einen Bereich vor der Beleuchtungsvorrichtung (1) abgestrahlt wird, dadurch gekennzeichnet, dass die Beleuchtungsvorrichtung (1) zumindest einen, vorzugsweise genau einen Reflektor- Träger (30) aufweist, und wobei der zumindest eine Reflektor (10, 11, 12, 13) fix an dem zumindest einen Reflektor-Träger (30) befestigt ist, und wobei die zumindest eine Lichtquelle (20, 21, 22, 23) auf zumindest einem Lichtquellen-Träger (40, 41, 42, 43) angeordnet ist, und wobei der zumindest eine 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 ist. 1. Lighting device (1) for a motor vehicle headlight, wherein the lighting device (1) at least one reflector (10, 11, 12, 13), and wherein the at least one reflector (10, 11, 12, 13) at least one light source (20 , 21, 22, 23), and wherein light 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 in a Area is emitted in front of the lighting device (1), characterized in that the lighting device (1) at least one, preferably exactly one reflector carrier (30), and wherein the at least one reflector (10, 11, 12, 13) fixed to the at least one reflector support (30) is fixed, and wherein the at least one light source (20, 21, 22, 23) on at least one light source carrier (40, 41, 42, 43) is arranged, and wherein the at least one Light source carrier (40, 41, 42, 43) on the reflector R-carrier (30) slidably mounted and in a defined position with respect to the reflector-carrier (30) is fixable.
2. Beleuchtungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der zumindest eine Reflektor-Träger (30) als Hauptkühlkörper (30) ausgebildet ist. 2. Lighting device according to claim 1, characterized in that the at least one reflector carrier (30) is designed as a main heat sink (30).
3. Beleuchtungsvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der zumindest eine Lichtquellen-Träger (40, 41, 42, 43) als Lichtquellen-Kühlkörper (40, 41, 42, 43) ausgebildet ist. 3. Lighting device according to claim 1 or 2, characterized in that the at least one light source carrier (40, 41, 42, 43) as a light source heat sink (40, 41, 42, 43) is formed.
4. Beleuchtungsvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der zumindest eine Lichtquellen-Träger (40, 41, 42, 43) - in Einbaulage der Beleuchtungsvorrichtung - in Bezug auf den zumindest einen Reflektor-Träger (30) vertikal verschiebbar ist. 4. Lighting device according to one of claims 1 to 3, characterized in that the at least one light source carrier (40, 41, 42, 43) - in installation position of the lighting device - with respect to the at least one reflector support (30) vertically displaceable is.
5. Beleuchtungsvorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der zumindest eine Reflektor-Träger (30) für den zumindest einen Lichtquellen-Träger (40, 41, 42, 43) zumindest eine Führungsnut (31a, 31b, 31c, 31d)/zumindest einen Führungszapfen aufweist und der zumindest eine Lichtquellen-Träger (40, 41, 42, 43) zumindest einen korrespondierenden Führungszapfen (40', 41', 42', 43') /zumindest eine korrespondierende Führungsnut aufweist. 5. Lighting device according to one of claims 1 to 4, characterized in that the at least one reflector support (30) for the at least one light source carrier (40, 41, 42, 43) at least one guide groove (31a, 31b, 31c, 31d) / at least one guide pin and the at least one light source carrier (40, 41, 42, 43) has at least one corresponding guide pin (40 ', 41', 42 ', 43') / at least one corresponding guide groove.
6. Beleuchtungsvorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass die zumindest eine Führungsnut (31a, 31b, 31c, 31d) an dem Reflektor-Träger (30) angebracht ist und der zumindest eine korrespondierende Führungszapfen (40', 41', 42', 43') an dem zumindest einen Lichtquellen-Träger (40, 41, 42, 43) angeordnet ist. 6. Lighting device according to claim 5, characterized in that the at least one guide groove (31a, 31b, 31c, 31d) is attached to the reflector support (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).
7. Beleuchtungsvorrichtung nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass die zumindest eine Führungsnut (31a, 31b, 31c, 31d) länglich und sich geradlinig erstreckend ausgebildet ist. 7. Lighting device according to claim 5 or 6, characterized in that the at least one guide groove (31a, 31b, 31c, 31d) is formed elongated and extending in a straight line.
8. Beleuchtungsvorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass die zumindest eine Führungsnut (31a, 31b, 31c, 31d) in Einbaulage der Beleuchtungsvorrichtung sich vertikal erstreckend angeordnet ist. 8. Lighting device according to claim 7, characterized in that the at least one guide groove (31a, 31b, 31c, 31d) is arranged vertically extending in the installed position of the lighting device.
9. Beleuchtungsvorrichtung nach einem der Ansprüche 5 bis 8, dadurch gekennzeichnet, dass der zumindest eine Führungszapfen (40', 41', 42', 43') länglich und geradlinig, sich in Richtung der korrespondierenden Führungsnut (31a, 31b, 31c, 31d) erstreckend ausgebildet ist. 9. Lighting device according to one of claims 5 to 8, characterized in that the at least one guide pin (40 ', 41', 42 ', 43') oblong and rectilinear, in the direction of the corresponding guide groove (31a, 31b, 31c, 31d ) is formed extending.
10. Beleuchtungsvorrichtung nach einem der Ansprüche 5 bis 9, dadurch gekennzeichnet, dass für jeden Lichtquellen-Träger (40, 41, 42, 43) genau eine Führungsnut (31a, 31b, 31c, 31d) und genau ein korrespondierender Führungszapfen (40', 41', 42', 43') vorgesehen ist. 10. Lighting device according to one of claims 5 to 9, 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.
11. Beleuchtungsvorrichtung nach einem der Ansprüche 5 bis 10, dadurch gekennzeichnet, dass die zumindest eine Führungsnut (31a, 31b, 31c, 31d) bzw. der zumindest eine Führungszapfen (40', 41', 42', 43') durch eine Befestigungsöffnung (50, 51) zum Befestigen des Lichtquellen-Trägers (40, 41, 42, 43) an dem Reflektor-Träger (30) unterbrochen ist. 11. Lighting device according to one of claims 5 to 10, characterized in that the at least one guide groove (31a, 31b, 31c, 31d) and the at least one guide pin (40 ', 41', 42 ', 43') is interrupted by a fastening opening (50, 51) for fastening the light source carrier (40, 41, 42, 43) to the reflector carrier (30).
12. Beleuchtungsvorrichtung nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass zwei oder mehr Reflektoren (10, 11, 12, 13) vorgesehen sind, wobei jedem Reflektor (10, 11, 12, 13) genau ein Lichtquellen-Träger (40, 41, 42, 43) mit jeweils zumindest einer Lichtquelle (20, 21, 22, 23) zugeordnet ist, und wobei die Lichtquellen- Träger (40, 41, 42, 43) in Bezug auf den zumindest einen Reflektor-Träger (30) verschiebbar und fixierbar sind. 12. Lighting device according to one of claims 1 to 11, characterized in that two or more reflectors (10, 11, 12, 13) are provided, each reflector (10, 11, 12, 13) exactly one light source carrier (40 , 41, 42, 43) each having at least one light source (20, 21, 22, 23) is assigned, and wherein the light source carrier (40, 41, 42, 43) with respect to the at least one reflector support (30 ) are displaceable and fixable.
13. Beleuchtungsvorrichtung nach Anspruch 12, dadurch gekennzeichnet, dass genau ein Reflektor-Träger (30) vorgesehen ist, und dass alle Lichtquellen-Träger (40, 41, 42, 43) an dem einen Reflektor-Träger (30) verschiebbar gelagert und fixierbar sind. 13. Lighting device according to claim 12, characterized in that exactly one reflector carrier (30) is provided, and that all the light source carriers (40, 41, 42, 43) slidably mounted on the one reflector carrier (30) and fixable are.
14. Beleuchtungsvorrichtung nach Anspruch 13, gekennzeichnet durch genau vier Reflektoren (10, 11, 12, 13) und genau vier zugeordnete Lichtquellen-Träger (40, 41, 42, 43). 14. Lighting device according to claim 13, characterized by exactly four reflectors (10, 11, 12, 13) and exactly four associated light source carrier (40, 41, 42, 43).
15. Beleuchtungsvorrichtung nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, dass die Lichtquellen (20, 21, 22, 23) LED-Lichtquellen sind, wobei jede LED-Lichtquelle (20, 21, 22, 23) zumindest eine, beispielsweise genau eine Leuchtdiode umfasst. 15. Lighting device according to one of claims 1 to 14, characterized in that the light sources (20, 21, 22, 23) are LED light sources, each LED light source (20, 21, 22, 23) at least one, for example, exactly a light-emitting diode comprises.
16. Beleuchtungsvorrichtung nach Anspruch 15, dadurch gekennzeichnet, dass jede LED- Lichtquelle (20, 21, 22, 23) bzw. zumindest die LED-Lichtquellen (20, 21, 22, 23) unterschiedlicher Reflektoren (10, 11, 12, 13) 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. 16. Lighting device according to claim 15, 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 ) is separately controllable and switched on and off and / or dimmable, wherein preferably each LED of a LED light source can be controlled separately and switched on or off and / or dimmable.
17. Beleuchtungs Vorrichtung nach einem der Ansprüche 1 bis 16, dadurch gekennzeichnet, dass zumindest einer der Reflektoren ein Fernlichtreflektor (10, 11) zur Erzeugung einer Fernlichtverteilung oder eines Teiles einer Fernlichtverteilung ist. 17. Lighting device according to one of claims 1 to 16, characterized in that at least one of the reflectors is a high-beam reflector (10, 11) for generating a high beam distribution or a part of a high beam distribution.
18. Beleuchtungsvorrichtung nach einem der Ansprüche 1 bis 17, dadurch gekennzeichnet, dass zumindest einer der Reflektoren ein Abblendlichtreflektor (10, 11) zur Erzeugung einer Abblendlichtverteilung oder eines Teiles einer Abblendlichtverteilung ist. 18. Lighting device according to one of claims 1 to 17, characterized in that at least one of the reflectors is a low beam reflector (10, 11) for generating a low beam distribution or a part of a low beam distribution.
19. Fahrzeugscheinwerfer mit zumindest einer Beleuchtungsvorrichtung nach einem der Ansprüche 1 bis 18. 19. A vehicle headlamp with at least one lighting device according to one of claims 1 to 18.
EP14714915.7A 2013-03-07 2014-03-04 Lighting device for a vehicle headlight Active EP2964486B1 (en)

Applications Claiming Priority (2)

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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

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JP6122513B2 (en) 2017-04-26
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AT514022A1 (en) 2014-09-15
US20160010823A1 (en) 2016-01-14
EP2964486B1 (en) 2021-06-30
CN105008180B (en) 2017-04-05
US9671080B2 (en) 2017-06-06
WO2014134649A1 (en) 2014-09-12
CN105008180A (en) 2015-10-28

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