EP2320132A1 - Vehicle headlamp - Google Patents

Vehicle headlamp Download PDF

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Publication number
EP2320132A1
EP2320132A1 EP10014053A EP10014053A EP2320132A1 EP 2320132 A1 EP2320132 A1 EP 2320132A1 EP 10014053 A EP10014053 A EP 10014053A EP 10014053 A EP10014053 A EP 10014053A EP 2320132 A1 EP2320132 A1 EP 2320132A1
Authority
EP
European Patent Office
Prior art keywords
light
diaphragm element
vehicle headlight
bolt
module
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
EP10014053A
Other languages
German (de)
French (fr)
Other versions
EP2320132B1 (en
Inventor
Thomas Wezel
Andres Fähnle
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.)
Marelli Automotive Lighting Reutlingen Germany GmbH
Original Assignee
Automotive Lighting Reutlingen 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 Automotive Lighting Reutlingen GmbH filed Critical Automotive Lighting Reutlingen GmbH
Publication of EP2320132A1 publication Critical patent/EP2320132A1/en
Application granted granted Critical
Publication of EP2320132B1 publication Critical patent/EP2320132B1/en
Not-in-force 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
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/68—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
    • F21S41/683—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens
    • F21S41/686—Blades, i.e. screens moving in a vertical plane
    • 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
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/255—Lenses with a front view of circular or truncated circular outline
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the invention relates to a vehicle headlight comprising at least a first light module for generating a first light distribution having a first light-dark boundary and a second light module for generating a second light distribution having a second light-dark boundary, the first light module acting as a first projection module having a first light source for emitting light, a first lens for projecting the light and a first diaphragm element arranged between the first light source and the first lens for generating the first light-dark boundary and having adjusting means for adjusting the position of the first diaphragm element.
  • a vehicle headlamp which has a plurality of light modules, wherein it is a light module to a projection module and the other light modules are reflection light modules.
  • the layers In order to produce a certain total light distribution with this headlamp, the layers must the light distributions generated by the individual light modules after assembly of this headlight are matched. For this purpose, relatively expensive adjusting devices are present in the known headlight.
  • a diaphragm element made of sheet metal in a projection module.
  • Such a known panel element has at least approximately parallel to its upper edge a line along which the sheet is perforated. By bending the diaphragm element on the perforated line, the position of the light-dark boundary can be adjusted. The adjustment of the diaphragm element is done manually and is relatively time consuming and difficult to accomplish.
  • headlamps with a projection module having an aperture element, the upper edge of which can be selectively pivoted into the beam path of the light generated by its light source during operation of the projection module or at least largely pivoted away from the beam path.
  • headlamps for example, optional dipped beam and high beam can be generated.
  • the position of the diaphragm element is limited by an adjustable stop. By adjusting the stop, the position of the light-dark boundary generated by the projection module can be varied.
  • the object of the invention is to provide a vehicle headlamp that can be easily and inexpensively manufactured with a small number of parts and can be adjusted particularly easily and quickly after its assembly.
  • the second light module is configured as a projection module with a second light source for emitting light, a second lens for projecting the light and a second aperture element arranged between the second light source and the second lens for generating the second light-dark boundary, and in that the adjusting means for adjusting the position of the light source the first aperture element are arranged relative to the second diaphragm element, wherein the position of the first light-dark boundary is fixed so that a predetermined total light distribution can be generated by superposition of the first light distribution with the second light distribution.
  • the two light modules of the headlamp according to the invention are designed as projection modules, can be dispensed with expensive reflectors, which must also be tilted for the purpose of adjustment.
  • the relative position of the first light distribution to the second light distribution can be particularly easily adjusted by the aperture elements of the two light modules are brought into a certain position relative to each other, so that the headlamp generates the predetermined total light distribution in its operation.
  • the adjustment required for this purpose are relatively simple and easy to handle.
  • the adjustment is preferably made at the end of the production of the headlamp.
  • the headlight is adjusted in its manufacture, that is, after its assembly, so that the two bright-dark boundaries that can be generated by the two light modules correspond.
  • the adjustment means are designed such that by means of the adjusting means, the two light-dark boundaries can be made to coincide. This results in the operation of the headlamp a single, relatively sharp Patoscuro limit of the total light distribution of the headlamp.
  • the course of the light-dark boundary can be set as desired.
  • the headlamp is to be designed, for example, as a low-beam headlight of a motor vehicle, then a V-shaped, asymmetrical light-dark boundary of the total light distribution or of the first and the second light distribution can be provided for Europe according to the ECE regulations.
  • the headlamp can also be designed to comply, for example, with US regulatory requirements (Society of Automotive Engineers, SAE).
  • the second diaphragm element is fixed relative to the rest of the second light module, in particular relative to a housing element of the headlamp.
  • a headlight is provided which has only one adjustable part, namely the first panel element.
  • Such a headlamp can be quickly and inexpensively manufactured with few parts become. Since only a single part needs to be adjusted, the headlight can be adjusted very quickly and with little effort. Overall, this results in low production costs.
  • the first diaphragm element is displaceably mounted relative to the remainder of the first light module in an alignment direction at least substantially orthogonal to an optical axis of the first light module and the adjusting means are arranged for displacing the diaphragm element along the adjustment direction.
  • the adjustment direction is at least substantially perpendicular when the headlamp is in its operating position in which it is installed in the vehicle.
  • the adjusting means in this case allow an upward or downward sliding of the diaphragm element for adjusting the first light-dark boundary.
  • the first light-dark boundary can be brought into a specific position with respect to the second light-dark boundary.
  • the two strigoscuro boundaries are brought into coincidence.
  • the adjusting means comprise a bolt, wherein a longitudinal axis of the bolt extends at least substantially parallel to the adjustment direction, the bolt is immovably connected to the first diaphragm element at a first end in the adjustment direction relative to the first diaphragm element and the adjusting means for Changing the position of the bolt are arranged in the adjustment direction, that the position of the first light-dark boundary is adjustable by moving the first diaphragm element along the adjustment direction. In this way, the adjustment can be easily realized.
  • the position of the first panel element can be adjust by displacing the pin along its longitudinal axis.
  • the adjusting means comprise a holding member on which the bolt is rotatably supported about its longitudinal axis, wherein a male threaded portion of the bolt is engaged with a female threaded portion, so by turning the bolt about its longitudinal axis the bolt along the adjustment direction for adjusting the position of the diaphragm element is movable.
  • a connecting section between the bolt and the first panel element as a bearing with a bush, preferably of elastic material (for example rubber or plastic, in particular synthetic rubber).
  • the bolt has, at a second end remote from the first diaphragm element, a head section which can be connected in a rotationally fixed manner to an adjusting tool for actuating the adjusting means.
  • the adjusting tool can be designed for manual adjustment of the headlamp.
  • the adjusting means are arranged such that they can be actuated by an automatically operating adjusting tool. The position of the first diaphragm element or the first light-dark boundary can thus be adjusted at least partially automatically in the manufacture of the headlamp.
  • the vehicle headlight and / or the first light module has a housing element and the first diaphragm element has a fastening section, wherein the attachment portion is disposed between the holding member and the housing member.
  • the first diaphragm element is arranged in a simple manner displaceable between the first light source and the first lens.
  • the housing element can be a housing element common to both light modules. It therefore need not be provided separate housing elements for the two light modules.
  • the common housing element ensures that the two light modules are arranged in a fixed spatial relationship to each other. In addition, can be produced in this way the headlight with few components.
  • the female threaded portion which engages the male threaded portion of the bolt is preferably formed in the housing member.
  • the retaining element has at least one spring section which is designed to press the fastening section of the first diaphragm element against the housing element. The diaphragm element is thus clamped between the attachment portion and the housing element.
  • the holding element is designed as a retaining spring formed from elastic sheet metal, then unintentional adjustment of the adjusting means during operation of the headlight or of the vehicle in which the headlight is installed can be avoided. Because by the force exerted by the retaining spring on the bolt, there is a relatively large contact force with which the two threaded portions are pressed together, so that a certain minimum for a rotation of the bolt Torque is required that for avoiding unintentional adjustment of the adjusting means, for example due to vibrations, is sufficiently large. Furthermore, the retaining spring can be produced as a single part, for example by punching.
  • the first panel element and / or the second panel element at least partially in and / or has curved shape against the Hauptlichtabgaberaum.
  • the first diaphragm element and / or the second diaphragm element is arched at least in sections toward the main light emission direction.
  • the first diaphragm element and / or the second diaphragm element have at least one step and / or at least one section with a chamfer at an edge for forming the light-dark boundary.
  • the first diaphragm element and / or the second diaphragm element have at least one opening for the passage of light.
  • the opening is covered by a light filter in such a way that the light filter can influence the light emitted by the light source of the respective light module.
  • the light filter can at least one optically active element for influencing (for Example bundling, deflecting or scattering) of the rays of light passing through the light filter.
  • certain areas of the overall light distribution can be additionally illuminated.
  • the light filter can be adapt to regional regulations for vehicle lighting.
  • the headlamp with the exception of the light filter at least largely independent of the regional regulations are made.
  • a light filter of a certain type is then incorporated in the headlamp. Overall, this makes the production of the headlamp in different variants, which are specific to the individual regions, simplified.
  • Relatively complex shapes of the diaphragm elements can be realized particularly easily if the first diaphragm element and / or the second diaphragm element consists of plastic. Because the complex shapes of the aperture elements can be relatively easily produced by injection molding.
  • the light sources of the headlight according to the invention may be of any type (for example incandescent lamps or gas discharge lamps), it is particularly preferred that the first light source and / or the second light source comprise one or more light-emitting diodes.
  • FIG. 1 an assembly 11 of a headlight 13 is shown.
  • the headlight 13 is preferably designed as a motor vehicle headlight.
  • the assembly 11 is set up to produce a so-called basic light distribution.
  • the basic light distribution may be a low-beam distribution with an asymmetric light-dark boundary, which has the V-shaped profile prescribed in particular for Europe.
  • the headlight 13 may have one or more other assemblies for generating other light distributions, so that the headlight 13 can not only produce low beam but also, for example, high beam.
  • the assembly 11 can also be set up to produce a different light distribution with a light-dark boundary.
  • the assembly 11, for example, for generating a light distribution for Fog light be formed.
  • the assembly 11 of the headlight 13 has a first light module in the form of a first projection module 15 and a second light module in the form of a second projection module 17, wherein the two projection modules 15, 17 have a common housing element 19 of the assembly 11, so that the two projection modules 15, 17 are fixed to each other.
  • the housing element 19 forms a section of a housing of the assembly 11 and / or of the headlight 13.
  • the housing element 19 has a first opening 21 into which a first lens 23 of the first projection module 15 is inserted.
  • a second lens 25 of the second projection module 17 is inserted into a second opening 27 of the housing element 19.
  • a support member is provided instead of the housing member 19, which serves only to arrange the two projection modules 15, 17 in a certain spatial relationship to each other and / or to hold the lenses 23, 25, without a part of a housing of the assembly 11 or the headlight 13 to form.
  • FIG. 1 shows the headlight 13 at least approximately in an operating position
  • the two projection modules 15, 17, in particular their lenses 23, 25 are arranged in the horizontal direction next to each other when the headlight 13 is installed in a horizontally standing motor vehicle.
  • FIG. 2 shows a longitudinal section through the first projection module 15.
  • the first projection module 15 has a first light source 29 with a first Light-emitting diode module 31 comprising a light-emitting diode 33 with an optical system 35.
  • the optics 35 of the light-emitting diode module 31 can be designed as a reflector or as a lens or as an optical attachment, wherein in an optical attachment part of the light is deflected by internal total reflection in the surface 34 in the light exit direction ,
  • the light-emitting diode module 31 may further comprise at least one heat sink for cooling the light sources 29 and 33, respectively.
  • first light emitting diode module 31 only a first light emitting diode module 31 is shown, the first light source 29, a plurality of first light emitting diode modules 31, preferably two or three first light emitting diode modules 31, have.
  • a first diaphragm element 37 of the first projection module 15 is arranged between the first light source 29 and the first lens 23.
  • a fastening portion 39 of the first diaphragm element 37 is clamped between the housing element 19 and a holding element designed as a retaining spring 41, so that the first diaphragm element 37 is fixed in the main light emission direction, ie in the direction of an optical axis 43 of the first projection module 15.
  • the retaining spring 41 is fastened to the housing element 19 by means of screws 45, which are inserted into a respective screw hole 47 of the housing element 19.
  • the retaining spring 41 may also be fastened to the housing element 19 by means of rivets or blind rivets, which are inserted into a respective rivet hole of the housing element 19, or in any other way.
  • a bolt 51 is arranged between a female threaded portion 49 of the housing member 19 and the retaining spring 41.
  • the retaining spring 41 is shaped so that it with its spring force presses a male threaded portion 53 of the bolt 51 against the female threaded portion 49, so that the two threaded portions 49, 53 interlock and fix the bolt 51 in its longitudinal direction, that is in the direction of its longitudinal axis 55, relative to the housing portion 19.
  • the retaining spring 41 has four spring sections 56 which press the fastening section 39 against a contact section (without reference numeral) of the housing element 19.
  • the bolt 51 extends with its longitudinal axis 55 at least substantially orthogonal to the optical axis 43 of the first projection module 15 and at least substantially vertically when the headlight 13 is in its operating position.
  • the bolt 51 is inserted at a first end into a bearing bush of the first diaphragm element 37 designed as a rubber bushing 57 such that it is freely rotatable about its longitudinal axis 55 relative to the first diaphragm element 37 and a movement of the bolt 51 in its longitudinal direction to a corresponding movement of the first diaphragm member 37 along the longitudinal direction of the bolt 51 leads.
  • the first diaphragm element 37 is displaceably mounted relative to the housing element 19 in the longitudinal direction of the bolt 51 by means of one or more guides, which are formed in a surface of the housing element 19 facing the first diaphragm element 37.
  • the bolt 51 has a portion 59 of reduced diameter, which is surrounded by the rubber bush 57 and whose width corresponds approximately to an inner diameter of the rubber bushing 57 (see FIG. 2 ).
  • the bolt 51 has a head portion 61, which is formed in the embodiment shown as a hexagonal head.
  • the head portion 61 may also have a different shape.
  • the head section can be connected in a rotationally fixed manner to an adjusting tool, so that the bolt 51 can be rotated along the longitudinal axis 55 of the bolt 51 for adjusting the first panel element 37 by means of the adjusting tool.
  • an adjustment that is, an adjustment of the position of the first diaphragm member 37 along the longitudinal axis 55 of the bolt 51, that is, at least substantially in vertical Allow direction (in the operating position headlight 13).
  • the second projection module 17 has the same basic structure as the first projection module 15, however, no adjusting means 63 are provided in the second projection module 17.
  • the first diaphragm element 37 is thus adjustable, whereas a second diaphragm element 65 of the second projection module 17 is fixedly arranged within the module 11.
  • the second projection module 17 has a second light source 67 in addition to the second diaphragm element 65.
  • the second diaphragm element 65 is arranged in the beam path of light generated by the second light source 67 between the second light source 67 and the second lens 25.
  • the second panel element 65 has a second fastening section 69, on which it is firmly connected to the housing element 19.
  • the second one Attachment 69 is screwed by means fastened in corresponding screw holes 47 of the housing member 19 screws 45.
  • the second fixing portion 69 is riveted or fastened in some other way by means of rivets or blind rivets fastened in corresponding rivet holes of the housing element 19.
  • the second light source 67 comprises at least one second light-emitting diode module 70 with a light-emitting diode 33 and an optical attachment 35.
  • the second light source 67 may have, for example, one, two or three second light-emitting diode modules 70.
  • an optical axis 71 of the second projection module 17 extends at least substantially parallel to the optical axis 43 of the first projection module 15.
  • the two projection modules 15, 17 along their optical axes 43, 71 arranged offset from one another ,
  • both diaphragm elements 37, 65 have an upper edge 74 with a shape that is bent toward the main light emission direction (arrow 72).
  • the diaphragm elements 37, 65 may have a different shape, in particular at their upper edges 74.
  • the top edge 74 of the first panel member 37 has a portion with a chamfer 73 and at the upper edge 74 of the second panel member 65, a section with a shoulder 75, wherein the shoulder 75 protrudes in the main light output direction 72 of the upper edge 74.
  • the second panel member 65 below its upper edge on a preferably rectangular, in particular square opening 77, which is covered by a light filter 78.
  • the light filter 78 is attached to formed in the second panel member 65 retaining pin 79 and riveted to another rivet hole 81 of the second panel member 65.
  • the light filter 78 may include optically active elements (not shown) that cause at least a specific area of the light distribution generated by the second projection module 17 to be specifically illuminated. Be provided for different headlights 13 light filter 78 with different properties, then the headlight 13 in different variants, as far as the light distribution generated by him, are produced. In all these variants, all components, in particular the diaphragm elements 37, 65, with the exception of the light filter 78 may be identical.
  • the section with the chamfer 73 can also be provided on the upper edge 74 of the second diaphragm element 65, and the section with the shoulder 75 can also be present on the first diaphragm element 37.
  • the opening 67 can also be provided below the upper edge 74 of the first diaphragm element 37.
  • the two diaphragm elements 37, 65 are made of plastic by means of injection molding.
  • the two projection modules 15, 17 operate according to the projection principle, that is to say light generated by the light sources 29, 67 passes the aperture elements 37, 65 through the lenses 23, 25 to an area in front of the vehicle in which the headlight 13 is installed.
  • the upper edges 74 of the two diaphragm elements 37, 65 determine the course of a light-dark boundary of the light distributions of the light emitted by the projection modules 15, 17.
  • the lenses 23, 25 project the defined by means of the aperture elements 37, 65 light distributions.
  • the lenses 23, 25 may have regular or irregular surface structures on at least one optically effective surface, which may vary or correct the brightness gradient and the color fringe of the light-dark boundary.
  • the first projection module 15 generates a first light distribution with a first light-dark boundary
  • the second projection module 17 generates a second light distribution with a second light-dark boundary.
  • An overall light distribution generated by the assembly 11 results from a superposition of the first light distribution with the second light distribution.
  • the first and the second light distribution in particular their light-dark boundaries, must be arranged in a specific spatial relationship to one another. With the embodiment of the assembly 11 shown a predetermined total light distribution is to be achieved with a relatively sharp resulting bright-dark boundary.
  • the two light-dark boundaries generated by the individual projection modules 15, 17 must lie as exactly as possible on each other.
  • the headlight 13 in a suitable measuring equipment are put into operation as a test. It can be used an automated adjustment tool that engages the head portion 61 of the bolt 51 and the bolt 51 automatically rotated about its longitudinal axis 55, that the two strigoscuro boundaries are at least largely to each other.
  • the headlight 13 With the aid of the invention, it is possible to produce a motor vehicle headlight 13 with which a desired light distribution with a light-dark boundary can be generated with high precision despite manufacturing tolerances.
  • the first diaphragm element 37 can be adjusted by means of the adjusting means 63 and the second diaphragm element 65 is fixedly arranged, the headlight 13 can be produced inexpensively and easily adjusted.

Abstract

The vehicle headlight (13) has a light module (15) for producing light distribution with light dark border. Another light module is formed as a projection module (17) with a light source for sending light. A lens (25) is provided for the projection of the light. A screen element (65) is arranged between light source and lens for producing light dark border.

Description

Beschreibungdescription

Die Erfindung betrifft einen Fahrzeugscheinwerfer umfassend mindestens ein erstes Lichtmodul zum Erzeugen einer ersten Lichtverteilung mit einer ersten Helldunkelgrenze und ein zweites Lichtmodul zum Erzeugen einer zweiten Lichtverteilung mit einer zweiten Helldunkelgrenze, wobei das erste Lichtmodul als ein erstes Projektionsmodul mit einer ersten Lichtquelle zum Aussenden von Licht, einer ersten Linse zum Projizieren des Lichts und ein zwischen der ersten Lichtquelle und der ersten Linse angeordnetes erstes Blendenelement zum Erzeugen der ersten Helldunkelgrenze ausgebildet ist und Justiermittel zum Justieren der Lage des ersten Blendenelements aufweist.The invention relates to a vehicle headlight comprising at least a first light module for generating a first light distribution having a first light-dark boundary and a second light module for generating a second light distribution having a second light-dark boundary, the first light module acting as a first projection module having a first light source for emitting light, a first lens for projecting the light and a first diaphragm element arranged between the first light source and the first lens for generating the first light-dark boundary and having adjusting means for adjusting the position of the first diaphragm element.

Aus der DE 10 2007 040 728 A1 ist ein Fahrzeugscheinwerfer bekannt, der mehrere Lichtmodule aufweist, wobei es sich bei einem Lichtmodul um ein Projektionsmodul und bei den anderen Lichtmodulen um Reflexionslichtmodule handelt. Um mit diesem Scheinwerfer eine bestimmte Gesamtlichtverteilung erzeugen zu können, müssen die Lagen der von den einzelnen Lichtmodulen erzeugten Lichtverteilungen nach dem Zusammenbau dieses Scheinwerfers aufeinander abgestimmt werden. Hierzu sind im bekannten Scheinwerfer relativ aufwändige Justiereinrichtungen vorhanden.From the DE 10 2007 040 728 A1 is a vehicle headlamp is known which has a plurality of light modules, wherein it is a light module to a projection module and the other light modules are reflection light modules. In order to produce a certain total light distribution with this headlamp, the layers must the light distributions generated by the individual light modules after assembly of this headlight are matched. For this purpose, relatively expensive adjusting devices are present in the known headlight.

Es ist allgemein bekannt, in ein Projektionsmodul ein Blendenelement aus Blech einzubauen. Ein solches bekanntes Blendenelement weist zumindest annähernd parallel zu seiner Oberkante eine Linie auf, entlang der das Blech perforiert ist. Durch Knicken des Blendenelements an der perforierten Linie kann die Lage der Helldunkelgrenze justiert werden. Die Justierung des Blendenelements erfolgt manuell und ist relativ zeitaufwändig und schwer zu bewerkstelligen.It is generally known to install a diaphragm element made of sheet metal in a projection module. Such a known panel element has at least approximately parallel to its upper edge a line along which the sheet is perforated. By bending the diaphragm element on the perforated line, the position of the light-dark boundary can be adjusted. The adjustment of the diaphragm element is done manually and is relatively time consuming and difficult to accomplish.

Es sind außerdem Scheinwerfer mit einem Projektionsmodul bekannt, das ein Blendenelement aufweist, dessen Oberkante während des Betriebs des Projektionsmoduls wahlweise in den Strahlengang des von seiner Lichtquelle erzeugte Lichts hineingeschwenkt oder zumindest weitgehend aus dem Strahlengang weg geschwenkt werden kann. Mit solchen Scheinwerfern kann beispielsweise wahlweise Abblendlicht und Fernlicht erzeugt werden. In einer hineingeschwenkten Stellung ist die Lage des Blendenelements von einem justierbaren Anschlag begrenzt. Durch Justieren des Anschlags kann die Lage der von dem Projektionsmodul erzeugten Helldunkelgrenze variiert werden.There are also known headlamps with a projection module having an aperture element, the upper edge of which can be selectively pivoted into the beam path of the light generated by its light source during operation of the projection module or at least largely pivoted away from the beam path. With such headlamps, for example, optional dipped beam and high beam can be generated. In a pivoted-in position, the position of the diaphragm element is limited by an adjustable stop. By adjusting the stop, the position of the light-dark boundary generated by the projection module can be varied.

Aufgabe der Erfindung ist es, einen Fahrzeugscheinwerfer bereitzustellen, der einfach und kostengünstig mit einer geringen Teilezahl hergestellt werden kann und nach seinem Zusammenbau besonders einfach und schnell justiert werden kann.The object of the invention is to provide a vehicle headlamp that can be easily and inexpensively manufactured with a small number of parts and can be adjusted particularly easily and quickly after its assembly.

Zur Lösung dieser Aufgabe wird vorgeschlagen, dass das zweite Lichtmodul als ein Projektionsmodul mit einer zweiten Lichtquelle zum Aussenden von Licht, einer zweiten Linse zum Projizieren des Lichts und einem zwischen der zweiten Lichtquelle und der zweiten Linse angeordneten zweiten Blendenelement zum Erzeugen der zweiten Helldunkelgrenze ausgebildet ist und dass die Justiermittel zum Justieren der Lage des ersten Blendenelements relativ zum zweiten Blendenelement eingerichtet sind, wobei die Lage der ersten Helldunkelgrenze derart festlegbar ist, dass eine vorgegebene Gesamtlichtverteilung durch Überlagerung der ersten Lichtverteilung mit der zweiten Lichtverteilung erzeugbar ist.To solve this problem, it is proposed that the second light module is configured as a projection module with a second light source for emitting light, a second lens for projecting the light and a second aperture element arranged between the second light source and the second lens for generating the second light-dark boundary, and in that the adjusting means for adjusting the position of the light source the first aperture element are arranged relative to the second diaphragm element, wherein the position of the first light-dark boundary is fixed so that a predetermined total light distribution can be generated by superposition of the first light distribution with the second light distribution.

Dadurch, dass die beiden Lichtmodule des erfindungsgemäßen Scheinwerfers als Projektionsmodule ausgeführt sind, kann auf aufwendige Reflektoren verzichtet werden, die zudem zum Zwecke der Justierung kippbar gelagert werden müssen. Die relative Lage ersten Lichtverteilung zu der zweiten Lichtverteilung kann besonders einfach justiert werden, indem die Blendenelemente der beiden Lichtmodule in eine bestimme Lage relativ zueinander gebracht werden, sodass der Scheinwerfer bei seinem Betrieb die vorgegebene Gesamtlichtverteilung erzeugt. Die hierzu erforderlichen Justiermittel sind relativ einfach aufgebaut und leicht zu handhaben.The fact that the two light modules of the headlamp according to the invention are designed as projection modules, can be dispensed with expensive reflectors, which must also be tilted for the purpose of adjustment. The relative position of the first light distribution to the second light distribution can be particularly easily adjusted by the aperture elements of the two light modules are brought into a certain position relative to each other, so that the headlamp generates the predetermined total light distribution in its operation. The adjustment required for this purpose are relatively simple and easy to handle.

Die Justierung wird vorzugsweise am Ende der Herstellung des Scheinwerfers vorgenommen. Es ist jedoch denkbar, den Scheinwerfer auch im Rahmen von Reparaturarbeiten, beispielsweise nach einem Austausch von Teilen eines Lichtmoduls mit Hilfe der Justiermittel nachzujustieren.The adjustment is preferably made at the end of the production of the headlamp. However, it is conceivable to readjust the headlight also in the context of repair work, for example, after replacement of parts of a light module using the adjusting.

Je nach genauer Ausgestaltung des Scheinwerfers kann eine beliebige Lage der beiden Lichtverteilungen zueinander vorgegeben werden. Es ist jedoch bevorzugt, dass der Scheinwerfer bei seiner Herstellung, das heißt nach seinem Zusammenbau, so justiert wird, dass die beiden Helldunkelgrenzen, die von den beiden Lichtmodulen erzeugbar sind, sich entsprechen. Dementsprechend sind in einer bevorzugten Ausführungsform der Erfindung die Justiermittel derart ausgebildet sind, dass mittels der Justiermittel die beiden Helldunkelgrenzen zur Deckung gebracht werden können. Hierdurch ergibt sich beim Betrieb des Scheinwerfers eine einzige, relativ scharfe Helldunkelgrenze der Gesamtlichtverteilung des Scheinwerfers.Depending on the precise design of the headlamp, any position of the two light distributions to each other be specified. However, it is preferred that the headlight is adjusted in its manufacture, that is, after its assembly, so that the two bright-dark boundaries that can be generated by the two light modules correspond. Accordingly, in a preferred embodiment of the invention, the adjustment means are designed such that by means of the adjusting means, the two light-dark boundaries can be made to coincide. This results in the operation of the headlamp a single, relatively sharp chiaroscuro limit of the total light distribution of the headlamp.

Der Verlauf der Helldunkelgrenze kann je nach gewünschter Lichtverteilung und in Abhängigkeit von regionalen Zulassungsvorschriften für Fahrzeuge, insbesondere Kraftfahrzeuge, beliebig festgelegt werden. Soll der Scheinwerfer beispielsweise als ein Abblendlichtscheinwerfer eines Kraftfahrzeugs ausgebildet werden, dann kann für Europa gemäß den ECE-Regelungen eine V-förmige, asymmetrische Helldunkelgrenze der Gesamtlichtverteilung bzw. der ersten und der zweiten Lichtverteilung vorgesehen werden. Der Scheinwerfer kann auch so ausgestaltet werden, dass er beispielsweise den in den USA gültigen Zulassungsvorschriften (Vorschriften der Society of Automotive Engineers, SAE) entspricht.Depending on the desired light distribution and depending on regional approval regulations for vehicles, in particular motor vehicles, the course of the light-dark boundary can be set as desired. If the headlamp is to be designed, for example, as a low-beam headlight of a motor vehicle, then a V-shaped, asymmetrical light-dark boundary of the total light distribution or of the first and the second light distribution can be provided for Europe according to the ECE regulations. The headlamp can also be designed to comply, for example, with US regulatory requirements (Society of Automotive Engineers, SAE).

Es ist besonders bevorzugt, dass das zweite Blendenelement relativ zum Rest des zweiten Lichtmoduls, insbesondere relativ zu einem Gehäuseelement des Scheinwerfers, fest angeordnet ist. Hierdurch wird ein Scheinwerfer bereit gestellt, der nur ein justierbares Teil, nämlich das erste Blendenelement aufweist. Ein solcher Scheinwerfer kann mit wenigen Teilen schnell und kostengünstig hergestellt werden. Da nur ein einziges Teil justiert werden muss, kann der Scheinwerfer besonders schnell und mit wenig Arbeitsaufwand justiert werden. Insgesamt ergeben sich somit geringe Herstellkosten.It is particularly preferred that the second diaphragm element is fixed relative to the rest of the second light module, in particular relative to a housing element of the headlamp. As a result, a headlight is provided which has only one adjustable part, namely the first panel element. Such a headlamp can be quickly and inexpensively manufactured with few parts become. Since only a single part needs to be adjusted, the headlight can be adjusted very quickly and with little effort. Overall, this results in low production costs.

In einer bevorzugten Ausführungsform der Erfindung ist vorgesehen, dass das erste Blendenelement gegenüber dem Rest des ersten Lichtmoduls in einer zu einer optischen Achse des ersten Lichtmoduls zumindest im Wesentlichen orthogonalen Justierrichtung verschiebbar gelagert ist und die Justiermittel zum Verschieben des Blendenelements entlang der Justierrichtung eingerichtet sind. Hierbei ist weiter bevorzugt, dass die Justierrichtung zumindest im Wesentlichen senkrecht verläuft, wenn sich der Scheinwerfer in seiner Betriebslage, in der er in das Fahrzeug eingebaut ist, befindet. Die Justiermittel ermöglichen in diesem Fall ein Hinauf- oder Hinunterschieben des Blendenelements zum Justieren der ersten Helldunkelgrenze. Hierdurch kann die erste Helldunkelgrenze in eine bestimmte Lage bezüglich der zweiten Helldunkelgrenze gebracht werden. Vorzugsweise werden die beiden Helldunkelgrenzen zur Deckung gebracht.In a preferred embodiment of the invention, it is provided that the first diaphragm element is displaceably mounted relative to the remainder of the first light module in an alignment direction at least substantially orthogonal to an optical axis of the first light module and the adjusting means are arranged for displacing the diaphragm element along the adjustment direction. It is further preferred that the adjustment direction is at least substantially perpendicular when the headlamp is in its operating position in which it is installed in the vehicle. The adjusting means in this case allow an upward or downward sliding of the diaphragm element for adjusting the first light-dark boundary. As a result, the first light-dark boundary can be brought into a specific position with respect to the second light-dark boundary. Preferably, the two chiaroscuro boundaries are brought into coincidence.

Hierbei ist besonders bevorzugt, dass die Justiermittel einen Bolzen aufweisen, wobei eine Längsachse des Bolzens zumindest im Wesentlichen parallel zur Justierrichtung verläuft, der Bolzen an einem ersten Ende in der Justierrichtung gegenüber dem ersten Blendenelement unbeweglich mit dem ersten Blendenelement verbunden ist und die Justiermittel derart zum Verändern der Lage des Bolzens in der Justierrichtung eingerichtet sind, dass die Lage der ersten Helldunkelgrenze durch Bewegen des ersten Blendenelements entlang der Justierrichtung einstellbar ist. Auf diese Weise lassen sich die Justiermittel einfach realisieren. Die Lage des ersten Blendenelements lässt sich durch eine Verlagerung des Bolzens entlang seiner Längsachse justieren.It is particularly preferred that the adjusting means comprise a bolt, wherein a longitudinal axis of the bolt extends at least substantially parallel to the adjustment direction, the bolt is immovably connected to the first diaphragm element at a first end in the adjustment direction relative to the first diaphragm element and the adjusting means for Changing the position of the bolt are arranged in the adjustment direction, that the position of the first light-dark boundary is adjustable by moving the first diaphragm element along the adjustment direction. In this way, the adjustment can be easily realized. The position of the first panel element can be adjust by displacing the pin along its longitudinal axis.

Leicht zu bedienende Justiermittel, ergeben sich, wenn vorgesehen wird, dass die Justiermittel ein Halteelement aufweisen, an dem der Bolzen um seine Längsachse drehbar gehalten ist, wobei ein Außengewindeabschnitt des Bolzens mit einem Innengewindeabschnitt in Eingriff steht, sodass durch Drehen des Bolzens um seine Längsachse der Bolzen entlang der Justierrichtung zum Justieren der Lage des Blendenelements bewegbar ist. Hierbei erweist es sich als vorteilhaft, einen Verbindungsabschnitt zwischen dem Bolzen und dem ersten Blendenelement als ein Lager mit einer Buchse vorzugsweise aus elastischem Material (beispielsweise Gummi oder Kunststoff, insbesondere Kunstgummi) auszubilden.Easy-to-use adjusting means, when it is provided that the adjusting means comprise a holding member on which the bolt is rotatably supported about its longitudinal axis, wherein a male threaded portion of the bolt is engaged with a female threaded portion, so by turning the bolt about its longitudinal axis the bolt along the adjustment direction for adjusting the position of the diaphragm element is movable. It proves to be advantageous here to form a connecting section between the bolt and the first panel element as a bearing with a bush, preferably of elastic material (for example rubber or plastic, in particular synthetic rubber).

Zum einfachen und schnellen Betätigen der Justiermittel wird vorgeschlagen, dass der Bolzen an einem von dem ersten Blendenelement abgewandten zweiten Ende einen Kopfabschnitt aufweist, der drehfest mit einem Justierwerkzeug zum Betätigen der Justiermittel verbindbar ist. Das Justierwerkzeug kann zum manuellen Justieren des Scheinwerfers ausgebildet sein. Vorzugsweise sind die Justiermittel jedoch derart eingerichtet, dass sie von einem automatisiert arbeitendem Justierwerkzeug betätigt werden können. Die Lage des ersten Blendenelements bzw. der ersten Helldunkelgrenze kann somit bei der Herstellung des Scheinwerfers zumindest teilweise automatisiert justiert werden.For simple and quick operation of the adjusting means, it is proposed that the bolt has, at a second end remote from the first diaphragm element, a head section which can be connected in a rotationally fixed manner to an adjusting tool for actuating the adjusting means. The adjusting tool can be designed for manual adjustment of the headlamp. Preferably, however, the adjusting means are arranged such that they can be actuated by an automatically operating adjusting tool. The position of the first diaphragm element or the first light-dark boundary can thus be adjusted at least partially automatically in the manufacture of the headlamp.

Es kann vorgesehen werden, dass der Fahrzeugscheinwerfer und/oder das erste Lichtmodul ein Gehäuseelement und das erste Blendenelement einen Befestigungsabschnitt aufweist, wobei der Befestigungsabschnitt zwischen dem Halteelement und dem Gehäuseelement angeordnet ist. Hierdurch wird das erste Blendenelement auf einfache Weise verschiebbar zwischen der ersten Lichtquelle und der ersten Linse angeordnet. Bei dem Gehäuseelement kann es sich um ein für beide Lichtmodule gemeinsames Gehäuseelement handelt. Es brauchen also keine separate Gehäuseelemente für die beiden Lichtmodule vorgesehen werden. Das gemeinsame Gehäuseelement stellt sicher, dass die beiden Lichtmodule in einem festen räumlichen Bezug zueinander angeordnet sind. Zudem lässt sich auf diese Weise der Scheinwerfer mit wenigen Bauteilen herstellen. Der Innengewindeabschnitt, der in den Außengewindeabschnitt des Bolzens eingreift, ist vorzugsweise in das Gehäuseelement eingeformt.It may be provided that the vehicle headlight and / or the first light module has a housing element and the first diaphragm element has a fastening section, wherein the attachment portion is disposed between the holding member and the housing member. As a result, the first diaphragm element is arranged in a simple manner displaceable between the first light source and the first lens. The housing element can be a housing element common to both light modules. It therefore need not be provided separate housing elements for the two light modules. The common housing element ensures that the two light modules are arranged in a fixed spatial relationship to each other. In addition, can be produced in this way the headlight with few components. The female threaded portion which engages the male threaded portion of the bolt is preferably formed in the housing member.

Um das Blendenelement in einer Richtung, die parallel zu einer Lichthauptabgaberichtung des Scheinwerfers verläuft, zu fixieren, kann vorgesehen werden, dass das Halteelement mindestens einen Federabschnitt aufweist, der zum Drücken des Befestigungsabschnitts des ersten Blendenelements gegen das Gehäuseelement ausgebildet ist. Das Blendenelement ist also zwischen dem Befestigungsabschnitt und dem Gehäuseelement eingeklemmt.In order to fix the diaphragm element in a direction which runs parallel to a light main discharge direction of the headlamp, it can be provided that the retaining element has at least one spring section which is designed to press the fastening section of the first diaphragm element against the housing element. The diaphragm element is thus clamped between the attachment portion and the housing element.

Wird vorgesehen, dass das Halteelement als eine aus elastischem Blech gebildete Haltefeder ausgebildet ist, dann kann ein unbeabsichtigtes Verstellen der Justiermittel beim Betrieb des Scheinwerfers bzw. des Fahrzeugs, in dem der Scheinwerfer eingebaut ist, vermieden werden. Denn durch die Kraft, die die Haltefeder auf den Bolzen ausübt, ergibt sich eine relativ große Anlagekraft, mit der die beiden Gewindeabschnitte aneinander gedrückt werden, sodass für ein Verdrehen des Bolzens ein gewisses minimales Drehmoment erforderlich ist, dass zum Vermeiden eines unbeabsichtigten Verstellens der Justiermittel, beispielsweise aufgrund von Vibrationen, hinreichend groß ist. Des Weiteren kann die Haltefeder als ein einziges Teil beispielsweise durch Stanzen hergestellt sein.If it is provided that the holding element is designed as a retaining spring formed from elastic sheet metal, then unintentional adjustment of the adjusting means during operation of the headlight or of the vehicle in which the headlight is installed can be avoided. Because by the force exerted by the retaining spring on the bolt, there is a relatively large contact force with which the two threaded portions are pressed together, so that a certain minimum for a rotation of the bolt Torque is required that for avoiding unintentional adjustment of the adjusting means, for example due to vibrations, is sufficiently large. Furthermore, the retaining spring can be produced as a single part, for example by punching.

Um die erste Lichtverteilung und/oder die zweite Lichtverteilung weitgehend beliebig vorgeben zu können und um die Form des Scheinwerfer an Abmessungen des Fahrzeugs anpassen zu können, ist es vorteilhaft, wenn das erste Blendenelement und/oder das zweite Blendenelement zumindest abschnittsweise eine in und/oder entgegen der Hauptlichtabgaberichtung gewölbte Form aufweist. Hierbei ist bevorzugt, dass das erste Blendenelement und/oder das zweite Blendenelement zumindest abschnittsweise zur Hauptlichtabgaberichtung hin gewölbt ist.In order to pretend the first light distribution and / or the second light distribution largely arbitrary and to adapt the shape of the headlamp dimensions of the vehicle, it is advantageous if the first panel element and / or the second panel element at least partially in and / or has curved shape against the Hauptlichtabgaberichtung. In this case, it is preferred that the first diaphragm element and / or the second diaphragm element is arched at least in sections toward the main light emission direction.

Zum Vorgeben der ersten Lichtverteilung und/oder der zweiten Lichtverteilung, kann außerdem vorgesehen werden, dass das erste Blendenelement und/oder das zweite Blendenelement an einer Kante zum Bilden der Helldunkelgrenze zumindest einen Absatz und/oder zumindest einen Abschnitt mit einer Fase aufweist.In order to predefine the first light distribution and / or the second light distribution, it may also be provided that the first diaphragm element and / or the second diaphragm element have at least one step and / or at least one section with a chamfer at an edge for forming the light-dark boundary.

Um die erste und/oder die zweite Lichtverteilung noch flexibler vorgeben zu können ist bevorzugt, dass das erste Blendenelement und/oder das zweite Blendeelement mindestens eine Öffnung zum Durchlassen von Licht aufweist.To be able to specify the first and / or the second light distribution even more flexibly, it is preferred that the first diaphragm element and / or the second diaphragm element have at least one opening for the passage of light.

Hierbei kann vorgesehen werden, dass die Öffnung von einem Lichtfilter derart verdeckt ist, dass das Lichtfilter das von der Lichtquelle des jeweiligen Lichtmoduls ausgesandte Licht beeinflussen kann. Das Lichtfilter kann mindestens ein optisch wirksames Element zum Beeinflussen (zum Beispiel Bündeln, Umlenken oder Streuen) der Strahlen des durch das Lichtfilter gelangende Licht aufweisen. Hierdurch können bestimmte Bereiche der Gesamtlichtverteilung zusätzlich beleuchtet werden. Es ist denkbar, das Lichtfilter an regionale Vorschriften für die Fahrzeugbeleuchtung anzupassen. So kann der Scheinwerfer mit Ausnahme des Lichtfilters zumindest weitgehend unabhängig von den regionalen Vorschriften hergestellt werden. Je nach Region, in der der Scheinwerfer verwendet werden soll, wird dann ein Lichtfilter eines bestimmten Typs in den Scheinwerfer eingebaut. Insgesamt wird hierdurch die Herstellung des Scheinwerfers in verschiedenen Varianten, die für die einzelnen Regionen spezifisch sind, vereinfacht.It can be provided here that the opening is covered by a light filter in such a way that the light filter can influence the light emitted by the light source of the respective light module. The light filter can at least one optically active element for influencing (for Example bundling, deflecting or scattering) of the rays of light passing through the light filter. As a result, certain areas of the overall light distribution can be additionally illuminated. It is conceivable to adapt the light filter to regional regulations for vehicle lighting. Thus, the headlamp, with the exception of the light filter at least largely independent of the regional regulations are made. Depending on the region in which the headlamp is to be used, a light filter of a certain type is then incorporated in the headlamp. Overall, this makes the production of the headlamp in different variants, which are specific to the individual regions, simplified.

Relativ komplexe Formen der Blendenelemente lassen sich besonders problemlos realisieren, wenn, das erste Blendenelement und/oder das zweite Blendenelement aus Kunststoff besteht. Denn die komplexe Formen der Blendenelemente lassen sich durch Spritzgießen relativ leicht herstellen.Relatively complex shapes of the diaphragm elements can be realized particularly easily if the first diaphragm element and / or the second diaphragm element consists of plastic. Because the complex shapes of the aperture elements can be relatively easily produced by injection molding.

Obwohl die Lichtquellen des erfindungsgemäßen Scheinwerfers beliebiger Art sei können (zum Beispiel Glühlampen oder Gasentladungslampen), ist besonders bevorzugt, dass die ersten Lichtquelle und/oder die zweite Lichtquelle eine oder mehrere Leuchtdioden umfasst.Although the light sources of the headlight according to the invention may be of any type (for example incandescent lamps or gas discharge lamps), it is particularly preferred that the first light source and / or the second light source comprise one or more light-emitting diodes.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung, in welcher exemplarische Ausführungsformen der Erfindung anhand der Zeichnungen näher erläutert werden. Dabei zeigen:

Figur 1
eine Hintenansicht einer Scheinwerferbaugruppe
Figur 2
gemäß einer bevorzugten Ausführungsform der Erfindung; eine geschnittene Seitenansicht der Baugruppe aus Figur 1;
Figur 3
eine geschnittene Draufsicht auf die Baugruppe aus Figur 1;
Figur 4
eine perspektivische Ansicht eines ersten Blendenelements der Baugruppe aus den Figuren 1 bis 3; und
Figur 5
eine perspektivische Ansicht eines zweiten Blendenelements der Baugruppe aus den Figuren 1 bis 3.
Further features and advantages of the invention will become apparent from the following description in which exemplary embodiments of the invention are explained in more detail with reference to the drawings. Showing:
FIG. 1
a rear view of a headlight assembly
FIG. 2
in accordance with a preferred embodiment of the invention; a sectional side view of the assembly FIG. 1 ;
FIG. 3
a sectional plan view of the assembly from FIG. 1 ;
FIG. 4
a perspective view of a first panel element of the assembly of the FIGS. 1 to 3 ; and
FIG. 5
a perspective view of a second panel element of the assembly of the FIGS. 1 to 3 ,

In Figur 1 ist eine Baugruppe 11 eines Scheinwerfers 13 dargestellt. Der Scheinwerfer 13 ist vorzugsweise als ein Kraftfahrzeugscheinwerfer ausgebildet. In der gezeigten Ausführungsform ist die Baugruppe 11 zum Erzeugen einer sogenannten Grundlichtverteilung eingerichtet. Bei der Grundlichtverteilung kann es sich um eine Abblendlichtverteilung mit einer asymmetrischen Helldunkelgrenze handeln, die den insbesondere für Europa vorgeschriebenen V-förmigen Verlauf aufweist. Der Scheinwerfer 13 kann eine oder mehrere weitere Baugruppen zum Erzeugen anderer Lichtverteilungen aufweisen, sodass der Scheinwerfer 13 nicht nur Abblendlicht sondern beispielsweise auch Fernlicht erzeugen kann. Abweichend von der gezeigten Ausführungsform kann die Baugruppe 11 auch zum Erzeugen einer anderen Lichtverteilung mit einer Helldunkelgrenze eingerichtet sein. So kann die Baugruppe 11 beispielsweise zum Erzeugen einer Lichtverteilung für Nebellicht ausgebildet sein.In FIG. 1 an assembly 11 of a headlight 13 is shown. The headlight 13 is preferably designed as a motor vehicle headlight. In the embodiment shown, the assembly 11 is set up to produce a so-called basic light distribution. The basic light distribution may be a low-beam distribution with an asymmetric light-dark boundary, which has the V-shaped profile prescribed in particular for Europe. The headlight 13 may have one or more other assemblies for generating other light distributions, so that the headlight 13 can not only produce low beam but also, for example, high beam. Notwithstanding the embodiment shown, the assembly 11 can also be set up to produce a different light distribution with a light-dark boundary. Thus, the assembly 11, for example, for generating a light distribution for Fog light be formed.

Die Baugruppe 11 des Scheinwerfers 13 weist ein erstes Lichtmodul in Form eines ersten Projektionsmoduls 15 und ein zweites Lichtmodul in Form eines zweiten Projektionsmoduls 17 auf, wobei die beiden Projektionsmodule 15, 17 ein gemeinsames Gehäuseelement 19 der Baugruppe 11 aufweisen, sodass die beiden Projektionsmodule 15, 17 fest zueinander positioniert sind. Das Gehäuseelement 19 bildet einen Abschnitt eines Gehäuses der Baugruppe 11 und/oder des Scheinwerfers 13. Das Gehäuseelement 19 weist eine erste Öffnung 21 auf, in die eine erste Linse 23 des ersten Projektionsmoduls 15 eingesetzt ist. In entsprechender Weise ist eine zweite Linse 25 des zweiten Projektionsmoduls 17 in eine zweite Öffnung 27 des Gehäuseelements 19 eingesetzt. In einer nicht gezeigten Ausführungsform ist anstelle des Gehäuseelements 19 ein Tragelement vorgesehen, das lediglich dazu dient, die beiden Projektionsmodule 15, 17 in einem bestimmten räumlichen Bezug zueinander anzuordnen und/oder die Linsen 23, 25 zu halten, ohne einen Teil eines Gehäuses der Baugruppe 11 oder des Scheinwerfers 13 zu bilden.The assembly 11 of the headlight 13 has a first light module in the form of a first projection module 15 and a second light module in the form of a second projection module 17, wherein the two projection modules 15, 17 have a common housing element 19 of the assembly 11, so that the two projection modules 15, 17 are fixed to each other. The housing element 19 forms a section of a housing of the assembly 11 and / or of the headlight 13. The housing element 19 has a first opening 21 into which a first lens 23 of the first projection module 15 is inserted. In a corresponding manner, a second lens 25 of the second projection module 17 is inserted into a second opening 27 of the housing element 19. In one embodiment, not shown, a support member is provided instead of the housing member 19, which serves only to arrange the two projection modules 15, 17 in a certain spatial relationship to each other and / or to hold the lenses 23, 25, without a part of a housing of the assembly 11 or the headlight 13 to form.

Man erkennt aus der Darstellung der Figur 1, die den Scheinwerfer 13 zumindest in etwa in einer Betriebslage zeigt, dass die beiden Projektionsmodule 15, 17, insbesondere deren Linsen 23, 25 in horizontaler Richtung nebeneinander angeordnet sind, wenn der Scheinwerfer 13 in ein waagrecht stehendes Kraftfahrzeug eingebaut ist.One recognizes from the representation of the FIG. 1 , which shows the headlight 13 at least approximately in an operating position, that the two projection modules 15, 17, in particular their lenses 23, 25 are arranged in the horizontal direction next to each other when the headlight 13 is installed in a horizontally standing motor vehicle.

Figur 2 zeigt einen Längsschnitt durch das erste Projektionsmodul 15. Das erste Projektionsmodul 15 weist eine erste Lichtquelle 29 mit einem ersten Leuchtdiodenmodul 31 umfassend eine Leuchtdiode 33 mit einer Optik 35. Die Optik 35 des Leuchtdiodenmoduls 31 kann als Reflektor oder als Linse bzw. als Vorsatzoptik ausgeführt sein, wobei in einer Vorsatzoptik ein Teil des Lichts durch interne Totalreflexion in der Fläche 34 in die Lichtaustrittsrichtung abgelenkt wird. Das Leuchtdiodenmodul 31 kann ferner mindestens einen Kühlkörper zur Kühlung der Lichtquellen 29 bzw. 33 aufweisen. Obwohl in Figur 2 lediglich ein erstes Leuchtdiodenmodul 31 dargestellt ist, kann die erste Lichtquelle 29 mehrere erste Leuchtdiodenmodule 31, vorzugsweise zwei oder drei erste Leuchtdiodenmodule 31, aufweisen. Im Strahlengang von von der ersten Lichtquelle 29 erzeugtem Licht ist zwischen der ersten Lichtquelle 29 und der ersten Linse 23 ein erstes Blendenelement 37 des ersten Projektionsmoduls 15 angeordnet. FIG. 2 shows a longitudinal section through the first projection module 15. The first projection module 15 has a first light source 29 with a first Light-emitting diode module 31 comprising a light-emitting diode 33 with an optical system 35. The optics 35 of the light-emitting diode module 31 can be designed as a reflector or as a lens or as an optical attachment, wherein in an optical attachment part of the light is deflected by internal total reflection in the surface 34 in the light exit direction , The light-emitting diode module 31 may further comprise at least one heat sink for cooling the light sources 29 and 33, respectively. Although in FIG. 2 only a first light emitting diode module 31 is shown, the first light source 29, a plurality of first light emitting diode modules 31, preferably two or three first light emitting diode modules 31, have. In the beam path of light generated by the first light source 29, a first diaphragm element 37 of the first projection module 15 is arranged between the first light source 29 and the first lens 23.

Aus der Figuren 1 bis 3 ist zu erkennen, dass ein Befestigungsabschnitt 39 des ersten Blendenelement 37 zwischen dem Gehäuseelement 19 und einem als eine Haltefeder 41 ausgebildetes Halteelement eingeklemmt ist, sodass das erste Blendenelement 37 in Hauptlichtabgaberichtung, das heißt in Richtung einer optischen Achse 43 des ersten Projektionsmoduls 15 fixiert ist. Die Haltefeder 41 ist mittels Schrauben 45, die in jeweils ein Schraubloch 47 des Gehäuseelements 19 eingesetzt sind, an das Gehäuseelement 19 befestigt. Selbstverständlich kann die Haltefeder 41 auch mittels Nieten oder Blindnieten, die in jeweils ein Nietloch des Gehäuseelements 19 eingesetzt sind, oder auf beliebig andere Weise an dem Gehäuseelement 19 befestigt sein. Zwischen einem Innengewindeabschnitt 49 des Gehäuseelements 19 und der Haltefeder 41 ist ein Bolzen 51 angeordnet. Die Haltefeder 41 ist so geformt, dass sie mit ihrer Federkraft einen Außengewindeabschnitt 53 des Bolzens 51 gegen den Innengewindeabschnitt 49 drückt, sodass die beiden Gewindeabschnitte 49, 53 ineinander greifen und den Bolzen 51 in seiner Längsrichtung, das heißt in Richtung seiner Längsachse 55, gegenüber dem Gehäuseabschnitt 19 fixieren. Ferner weist die Haltefeder 41 vier Federabschnitte 56 aus, die den Befestigungsabschnitt 39 gegen einen Anlageabschnitt (ohne Bezugszeichen) des Gehäuselements 19 drücken.From the FIGS. 1 to 3 It can be seen that a fastening portion 39 of the first diaphragm element 37 is clamped between the housing element 19 and a holding element designed as a retaining spring 41, so that the first diaphragm element 37 is fixed in the main light emission direction, ie in the direction of an optical axis 43 of the first projection module 15. The retaining spring 41 is fastened to the housing element 19 by means of screws 45, which are inserted into a respective screw hole 47 of the housing element 19. Of course, the retaining spring 41 may also be fastened to the housing element 19 by means of rivets or blind rivets, which are inserted into a respective rivet hole of the housing element 19, or in any other way. Between a female threaded portion 49 of the housing member 19 and the retaining spring 41, a bolt 51 is arranged. The retaining spring 41 is shaped so that it with its spring force presses a male threaded portion 53 of the bolt 51 against the female threaded portion 49, so that the two threaded portions 49, 53 interlock and fix the bolt 51 in its longitudinal direction, that is in the direction of its longitudinal axis 55, relative to the housing portion 19. Furthermore, the retaining spring 41 has four spring sections 56 which press the fastening section 39 against a contact section (without reference numeral) of the housing element 19.

Der Bolzen 51 verläuft mit seiner Längsachse 55 zumindest im Wesentlichen orthogonal zur optischen Achse 43 der ersten Projektionsmoduls 15 und zumindest im Wesentlichen vertikal, wenn sich der Scheinwerfer 13 in seiner Betriebslage befindet. Der Bolzen 51 ist an einem ersten Ende in eine als eine Gummibuchse 57 ausgeführten Lagerbuchse des ersten Blendenelements 37 derart eingeschoben, dass er um seine Längsachse 55 frei gegenüber dem ersten Blendenelement 37 drehbar ist und eine Bewegung des Bolzens 51 in seiner Längsrichtung zu einer entsprechenden Bewegung des ersten Blendenelements 37 entlang der Längsrichtung des Bolzens 51 führt. Das erste Blendenelement 37 ist mittels einer oder mehrere Führungen, die in einer dem ersten Blendenelement 37 zugewandten Oberfläche des Gehäuseelements 19 eingeformt sind, gegenüber dem Gehäuseelement 19 in Längsrichtung des Bolzens 51 verschiebbar gelagert.The bolt 51 extends with its longitudinal axis 55 at least substantially orthogonal to the optical axis 43 of the first projection module 15 and at least substantially vertically when the headlight 13 is in its operating position. The bolt 51 is inserted at a first end into a bearing bush of the first diaphragm element 37 designed as a rubber bushing 57 such that it is freely rotatable about its longitudinal axis 55 relative to the first diaphragm element 37 and a movement of the bolt 51 in its longitudinal direction to a corresponding movement of the first diaphragm member 37 along the longitudinal direction of the bolt 51 leads. The first diaphragm element 37 is displaceably mounted relative to the housing element 19 in the longitudinal direction of the bolt 51 by means of one or more guides, which are formed in a surface of the housing element 19 facing the first diaphragm element 37.

Um ein Verschieben der Gummibuchse 57 gegenüber dem Bolzen 51 entlang dessen Längsrichtung zu vermeiden, weist der Bolzen 51 einen Abschnitt 59 mit verringertem Durchmesser auf, der von der Gummibuchse 57 umgeben ist und dessen Breite ungefähr einem Innendurchmesser der Gummibuchse 57 entspricht (siehe Figur 2).In order to avoid a displacement of the rubber bushing 57 with respect to the bolt 51 along its longitudinal direction, the bolt 51 has a portion 59 of reduced diameter, which is surrounded by the rubber bush 57 and whose width corresponds approximately to an inner diameter of the rubber bushing 57 (see FIG. 2 ).

An einem vom ersten Ende abgewandten zweiten Ende weist der Bolzen 51 einen Kopfabschnitt 61 auf, der in der gezeigten Ausführungsform als ein Sechskantkopf ausgebildet ist. Der Kopfabschnitt 61 kann auch eine andere Form aufweisen. Der Kopfabschnitt kann drehfest mit einem Justierwerkzeug verbunden werden, sodass mittels des Justierwerkzeugs der Bolzen 51 zum Justieren des ersten Blendenelements 37 entlang der Längsachse 55 des Bolzens 51 verdreht werden kann.At a second end facing away from the first end, the bolt 51 has a head portion 61, which is formed in the embodiment shown as a hexagonal head. The head portion 61 may also have a different shape. The head section can be connected in a rotationally fixed manner to an adjusting tool, so that the bolt 51 can be rotated along the longitudinal axis 55 of the bolt 51 for adjusting the first panel element 37 by means of the adjusting tool.

Insgesamt bilden insbesondere der Bolzen 51, die Gummibuchse 57, und die beiden Gewindeabschnitte 49, 53 Justiermittel 63, die ein Justieren, das heißt ein Verstellen der Lage des ersten Blendenelements 37 entlang der Längsachse 55 des Bolzens 51, das heißt zumindest im Wesentlichen in vertikaler Richtung (bei in der Betriebslage befindlichen Scheinwerfer 13) erlauben.Overall, in particular, the bolt 51, the rubber bushing 57, and the two threaded portions 49, 53 adjusting 63, an adjustment, that is, an adjustment of the position of the first diaphragm member 37 along the longitudinal axis 55 of the bolt 51, that is, at least substantially in vertical Allow direction (in the operating position headlight 13).

Das zweite Projektionsmodul 17 weist denselben Grundaufbau wie das erste Projektionsmodul 15 auf, jedoch sind bei dem zweiten Projektionsmodul 17 keine Justiermittel 63 vorgesehen. Das erste Blendenelement 37 ist somit justierbar, wohingegen ein zweites Blendenelement 65 des zweiten Projektionsmoduls 17 fest innerhalb der Baugruppe 11 angeordnet ist. Im Einzelnen weist das zweite Projektionsmodul 17 außer dem zweiten Blendenelement 65 eine zweite Lichtquelle 67 auf. Das zweite Blendenelement 65 ist im Strahlengang von von der zweiten Lichtquelle 67 erzeugtem Licht zwischen der zweiten Lichtquelle 67 und der zweiten Linse 25 angeordnet. Das zweite Blendenelement 65 weist einen zweiten Befestigungsabschnitt 69 auf, an dem es fest mit dem Gehäuseelement 19 verbunden ist. In der gezeigten Ausführungsform ist der zweite Befestigungsabschnitt 69 mittels in entsprechenden Schraublöchern 47 des Gehäuseelements 19 befestigten Schrauben 45 festgeschraubt. Selbstverständlich ist es denkbar, dass der zweite Befestigungsabschnitt 69 mittels in entsprechenden Nietlöchern des Gehäuseelements 19 befestigten Nieten oder Blindnieten festgenietet oder auf andere Weise befestigt ist. Wie die erste Lichtquelle 29 umfasst die zweite Lichtquelle 67 mindestens ein zweites Leuchtdiodenmodul 70 mit einer Leuchtdiode 33 und einer Vorsatzoptik 35. Die zweite Lichtquelle 67 kann beispielsweise ein, zwei oder drei zweite Leuchtdiodenmodule 70 aufweisen.The second projection module 17 has the same basic structure as the first projection module 15, however, no adjusting means 63 are provided in the second projection module 17. The first diaphragm element 37 is thus adjustable, whereas a second diaphragm element 65 of the second projection module 17 is fixedly arranged within the module 11. In detail, the second projection module 17 has a second light source 67 in addition to the second diaphragm element 65. The second diaphragm element 65 is arranged in the beam path of light generated by the second light source 67 between the second light source 67 and the second lens 25. The second panel element 65 has a second fastening section 69, on which it is firmly connected to the housing element 19. In the embodiment shown, the second one Attachment 69 is screwed by means fastened in corresponding screw holes 47 of the housing member 19 screws 45. Of course, it is conceivable that the second fixing portion 69 is riveted or fastened in some other way by means of rivets or blind rivets fastened in corresponding rivet holes of the housing element 19. Like the first light source 29, the second light source 67 comprises at least one second light-emitting diode module 70 with a light-emitting diode 33 and an optical attachment 35. The second light source 67 may have, for example, one, two or three second light-emitting diode modules 70.

Dadurch, dass die beiden Projektionsmodule 15, 17, wie beispielsweise aus Figur 3 ersichtlich, nebeneinander in der Baugruppe 11 angeordnet sind, verläuft eine optische Achse 71 des zweiten Projektionsmoduls 17 zumindest im Wesentlichen parallel zur optischen Achse 43 des ersten Projektionsmoduls 15. Allerdings sind die beiden Projektionsmodule 15, 17 entlang ihrer optischen Achsen 43, 71 zueinander versetzt angeordnet.Characterized in that the two projection modules 15, 17, such as out FIG. 3 can be seen side by side in the assembly 11, an optical axis 71 of the second projection module 17 extends at least substantially parallel to the optical axis 43 of the first projection module 15. However, the two projection modules 15, 17 along their optical axes 43, 71 arranged offset from one another ,

In den Figuren 4 und 5 sind die beiden Blendenelemente 37, 65 im Detail dargestellt. Beide Blendenelemente 37, 65 weisen eine Oberkante 74 mit einer zur Hauptlichtabgaberichtung (Pfeil 72) hin gebogenen Form auf. In Abhängigkeiten von Anforderungen an die Bauform des Scheinwerfers 13 bzw. an die Baugruppe 11 und/oder an die mit der Baugruppe 11 zu erzeugenden Lichtverteilung können die Blendenelemente 37, 65 insbesondere an ihren Oberkanten 74 eine andere Form aufweisen.In the FIGS. 4 and 5 the two diaphragm elements 37, 65 are shown in detail. Both diaphragm elements 37, 65 have an upper edge 74 with a shape that is bent toward the main light emission direction (arrow 72). In dependence on requirements for the design of the headlight 13 or on the assembly 11 and / or on the light distribution to be generated with the assembly 11, the diaphragm elements 37, 65 may have a different shape, in particular at their upper edges 74.

Um eine gewünschte Verteilung des von den beiden Projektionsmodulen 15, 17 abgegebenen Lichts möglichst genau vorgeben zu können, ist an der Oberkante 74 des ersten Blendenelements 37 ein Abschnitt mit einer Fase 73 und an der Oberkante 74 des zweiten Blendenelements 65 ein Abschnitt mit einem Absatz 75 vorgesehen, wobei der Absatz 75 in Hauptlichtabgaberichtung 72 von der Oberkante 74 abragt. Ferner weist das zweite Blendenelement 65 unterhalb seiner Oberkante eine vorzugsweise rechteckige, insbesondere quadratische Öffnung 77 auf, die von einem Lichtfilter 78 abgedeckt ist. Das Lichtfilter 78 ist an in das zweite Blendenelement 65 eingeformte Haltezapfen 79 angebracht und an ein weiteres Nietloch 81 des zweiten Blendenelements 65 festgenietet. Das Lichtfilter 78 kann optisch wirksame Elemente (nicht gezeigt) enthalten, die bewirken, dass mindestens ein bestimmter Bereich der von dem zweiten Projektionsmodul 17 erzeugten Lichtverteilung gezielt ausgeleuchtet wird. Werden für verschiedene Scheinwerfer 13 Lichtfilter 78 mit unterschiedlichen Eigenschaften vorgesehen, dann kann der Scheinwerfer 13 in verschiedenen Varianten, was die von ihm erzeugte Lichtverteilung angeht, hergestellt werden. Bei allen diesen Varianten können sämtliche Bauteile, insbesondere die Blendenelemente 37, 65, mit Ausnahme des Lichtfilters 78 identisch sein.To a desired distribution of the light emitted by the two projection modules 15, 17 as possible to specify exactly, is provided at the top edge 74 of the first panel member 37 has a portion with a chamfer 73 and at the upper edge 74 of the second panel member 65, a section with a shoulder 75, wherein the shoulder 75 protrudes in the main light output direction 72 of the upper edge 74. Further, the second panel member 65 below its upper edge on a preferably rectangular, in particular square opening 77, which is covered by a light filter 78. The light filter 78 is attached to formed in the second panel member 65 retaining pin 79 and riveted to another rivet hole 81 of the second panel member 65. The light filter 78 may include optically active elements (not shown) that cause at least a specific area of the light distribution generated by the second projection module 17 to be specifically illuminated. Be provided for different headlights 13 light filter 78 with different properties, then the headlight 13 in different variants, as far as the light distribution generated by him, are produced. In all these variants, all components, in particular the diaphragm elements 37, 65, with the exception of the light filter 78 may be identical.

Abweichend von der gezeigten Ausführungsform kann der Abschnitt mit der Fase 73 auch an der Oberkante 74 des zweiten Blendenelements 65 vorgesehen werden, und der Abschnitt mit dem Absatz 75 kann auch am ersten Blendenelement 37 vorhanden sein. Alternativ oder ergänzend zu der Öffnung des zweiten Blendenelements 65 kann die Öffnung 67 auch unterhalb der Oberkante 74 des ersten Blendenelements 37 vorgesehen werden.Notwithstanding the embodiment shown, the section with the chamfer 73 can also be provided on the upper edge 74 of the second diaphragm element 65, and the section with the shoulder 75 can also be present on the first diaphragm element 37. Alternatively or in addition to the opening of the second diaphragm element 65, the opening 67 can also be provided below the upper edge 74 of the first diaphragm element 37.

Soll die Baugruppe 11 als ein Teil eines Frontscheinwerfers eines Kraftfahrzeugs realisiert werden, dann sind oftmals zwei spiegelbildlich aufgebaute Varianten dieser Baugruppe 11 erforderlich. Folglich müssen insgesamt vier verschiedene Blendenelemente 37, 65 hergestellt werden. Um Fehler beim Zusammenbau des Scheinwerfers 13 bzw. der Baugruppe 11 zu vermeiden, sind in die Blendenelemente Kodierungen (nicht gezeigt) eingeformt, die verhindern, dass für ein bestimmtes Projektionsmodul 15, 17 versehentlich ein falsches Blendenelement 37, 65 verbaut wird.If the assembly 11 as part of a headlight a motor vehicle are realized, then often two mirror-image variants of this assembly 11 are required. Consequently, a total of four different aperture elements 37, 65 must be made. In order to avoid errors during assembly of the headlight 13 or of the assembly 11, encodings (not shown) are formed in the diaphragm elements, which prevent a wrong diaphragm element 37, 65 from being accidentally installed for a specific projection module 15, 17.

Um die oben beschrieben relativ komplexe Form der beiden Blendenelemente 37, 65 einfach herstellen zu können, sind die beiden Blendenelemente 37, 65 mittels Spritzgießen aus Kunststoff gefertigt.In order to be able to easily produce the above-described relatively complex shape of the two diaphragm elements 37, 65, the two diaphragm elements 37, 65 are made of plastic by means of injection molding.

Die beiden Projektionsmodule 15, 17 arbeiten nach dem Projektionsprinzip, das heißt von den Lichtquellen 29, 67 erzeugtes Licht gelangt an den Blendenelementen 37, 65 vorbei durch die Linsen 23, 25 zu einem Bereich vor dem Fahrzeug, in welches der Scheinwerfer 13 eingebaut ist. Hierbei legen die Oberkanten 74 der beiden Blendenelemente 37, 65 den Verlauf einer Helldunkelgrenze der Lichtverteilungen des von den Projektionsmodulen 15, 17 abgegebenen Lichts fest. Denn die Linsen 23, 25 projizieren die mittels der Blendenelemente 37, 65 festgelegte Lichtverteilungen. Die Linsen 23, 25 können auf mindestens einer optisch wirksamen Fläche regelmäßige oder unregelmäßige Oberflächenstrukturen aufweisen, die den Helligkeitsgradienten und den Farbsaum der Helldunkelgrenze variieren bzw. korrigieren können.The two projection modules 15, 17 operate according to the projection principle, that is to say light generated by the light sources 29, 67 passes the aperture elements 37, 65 through the lenses 23, 25 to an area in front of the vehicle in which the headlight 13 is installed. In this case, the upper edges 74 of the two diaphragm elements 37, 65 determine the course of a light-dark boundary of the light distributions of the light emitted by the projection modules 15, 17. Because the lenses 23, 25 project the defined by means of the aperture elements 37, 65 light distributions. The lenses 23, 25 may have regular or irregular surface structures on at least one optically effective surface, which may vary or correct the brightness gradient and the color fringe of the light-dark boundary.

Im Einzelnen erzeugt das erste Projektionsmodul 15 eine erste Lichtverteilung mit einer ersten Helldunkelgrenze, und das zweite Projektionsmodul 17 erzeugt eine zweite Lichtverteilung mit einer zweiten Helldunkelgrenze. Eine von der Baugruppe 11 erzeugte Gesamtlichtverteilung ergibt sich durch eine Überlagerung der ersten Lichtverteilung mit der zweiten Lichtverteilung. Um eine vorgegebene Gesamtlichtverteilung zu erzeugen, müssen die erste und die zweite Lichtverteilung, insbesondere deren Helldunkelgrenzen in einem bestimmten räumlich Bezug zueinander angeordnet sein. Mit der der gezeigten Ausführungsform der Baugruppe 11 soll eine vorgegebene Gesamtlichtverteilung mit einer relativ scharfen resultierenden Helldunkelgrenze erzielt werden. Somit müsse die beiden von den einzelnen Projektionsmodulen 15, 17 erzeugten Helldunkelgrenzen möglichst exakt aufeinander liegen.In detail, the first projection module 15 generates a first light distribution with a first light-dark boundary, and the second projection module 17 generates a second light distribution with a second light-dark boundary. An overall light distribution generated by the assembly 11 results from a superposition of the first light distribution with the second light distribution. In order to produce a predetermined total light distribution, the first and the second light distribution, in particular their light-dark boundaries, must be arranged in a specific spatial relationship to one another. With the embodiment of the assembly 11 shown a predetermined total light distribution is to be achieved with a relatively sharp resulting bright-dark boundary. Thus, the two light-dark boundaries generated by the individual projection modules 15, 17 must lie as exactly as possible on each other.

Da ein Herstellungsprozess zum Herstellen der Baugruppe 11 Schwankungen unterworfen ist, gelingt es in der Regel nicht, solche Baugruppen 11 herzustellen, bei denen die beiden Helldunkelgrenzen auf Anhieb aufeinander liegen. Aus diesem Grund wird unmittelbar nach dem Zusammenbau des Scheinwerfers 13, mittels der Justiermittel 63 die Lage des ersten Blendenelements 37 und somit der ersten Helldunkelgrenze so justiert, dass sie der Lage der zweiten Helldunkelgrenze zumindest weitgehend entspricht. Beim Justieren werden die beiden Gewindeabschnitte 49, 53 gegeneinander verdreht, sodass sich der Bolzen 51 samt dem ersten Blendenelement 37 entlang einer Justierrichtung (Pfeil 83), das heißt in der Justierrichtung 83 oder entgegen der Justierrichtung 83, bewegt. Aus Figur 2 ist ersichtlich, dass die Justierrichtung 83 zumindest im Wesentlichen parallel zur Längsachse 55 des Bolzens 51 ist.Since a manufacturing process for producing the assembly 11 is subject to fluctuations, it is generally not possible to produce such assemblies 11 in which the two bright-dark boundaries are immediately adjacent to one another. For this reason, immediately after the assembly of the headlight 13, by means of the adjusting means 63, the position of the first diaphragm element 37 and thus the first light-dark boundary is adjusted so that it corresponds to the position of the second light-dark boundary at least largely. When adjusting the two threaded portions 49, 53 are rotated against each other, so that the bolt 51 together with the first aperture element 37 along an adjustment direction (arrow 83), that is in the adjustment direction 83 or counter to the adjustment 83 moves. Out FIG. 2 it can be seen that the adjustment direction 83 is at least substantially parallel to the longitudinal axis 55 of the bolt 51.

Zum Zwecke der Justierung kann der Scheinwerfer 13 in einer geeigneten Messeinrichtung testweise in Betrieb genommen werden. Es kann ein automatisiert arbeitendes Justierwerkzeug verwendet werden, das an den Kopfabschnitt 61 des Bolzens 51 angreift und des Bolzen 51 selbsttätig so um seine Längsachse 55 verdreht, dass die beiden Helldunkelgrenzen zumindest weitgehend aufeinander liegen.For the purpose of adjustment, the headlight 13 in a suitable measuring equipment are put into operation as a test. It can be used an automated adjustment tool that engages the head portion 61 of the bolt 51 and the bolt 51 automatically rotated about its longitudinal axis 55, that the two chiaroscuro boundaries are at least largely to each other.

Mit Hilfe der Erfindung gelingt es, einen Kraftfahrzeugscheinwerfer 13 herzustellen, mit dem eine gewünschte Lichtverteilung mit einer Helldunkelgrenze trotz Fertigungstoleranzen mit hoher Präzision erzeugt werden kann. Dadurch, dass bei dem erfindungsgemäßen Scheinwerfer 13 das erste Blendenelement 37 mittels der Justiermittel 63 justiert werden kann und das zweite Blendenelement 65 fest angeordnet ist, lässt sich der Scheinwerfer 13 kostengünstig herstellen und leicht justieren.With the aid of the invention, it is possible to produce a motor vehicle headlight 13 with which a desired light distribution with a light-dark boundary can be generated with high precision despite manufacturing tolerances. The fact that in the headlight 13 according to the invention the first diaphragm element 37 can be adjusted by means of the adjusting means 63 and the second diaphragm element 65 is fixedly arranged, the headlight 13 can be produced inexpensively and easily adjusted.

Claims (16)

Fahrzeugscheinwerfer (13) umfassend mindestens ein erstes Lichtmodul (15) zum Erzeugen einer ersten Lichtverteilung mit einer ersten Helldunkelgrenze und ein zweites Lichtmodul (17) zum Erzeugen einer zweiten Lichtverteilung mit einer zweiten Helldunkelgrenze, wobei das erste Lichtmodul als ein erstes Projektionsmodul (15) mit einer ersten Lichtquelle (29) zum Aussenden von Licht, einer ersten Linse (23) zum Projizieren des Lichts und ein zwischen der ersten Lichtquelle (29) und der ersten Linse (23) angeordnetes erstes Blendenelement (37) zum Erzeugen der ersten Helldunkelgrenze ausgebildet ist und Justiermittel (63) zum Justieren der Lage des ersten Blendenelements (37) aufweist, dadurch gekennzeichnet, dass das zweite Lichtmodul als ein Projektionsmodul (17) mit einer zweiten Lichtquelle (67) zum Aussenden von Licht, einer zweiten Linse (25) zum Projizieren des Lichts und einem zwischen der zweiten Lichtquelle (67) und der zweiten Linse (25) angeordneten zweiten Blendenelement (65) zum Erzeugen der zweiten Helldunkelgrenze ausgebildet ist und dass die Justiermittel (63) zum Justieren der Lage des ersten Blendenelements (37) relativ zum zweiten Blendenelement (65) eingerichtet sind, wobei die Lage der ersten Helldunkelgrenze derart festlegbar ist, dass eine vorgegebene Gesamtlichtverteilung durch Überlagerung der ersten Lichtverteilung mit der zweiten Lichtverteilung erzeugbar ist.A vehicle headlamp (13) comprising at least a first light module (15) for generating a first light distribution with a first light-dark boundary and a second light module (17) for generating a second light distribution with a second light-dark boundary, wherein the first light module as a first projection module (15) a first light source (29) for emitting light, a first lens (23) for projecting the light, and a first diaphragm element (37) arranged between the first light source (29) and the first lens (23) for generating the first light-dark boundary and adjusting means (63) for adjusting the position of the first diaphragm element (37), characterized in that the second light module as a projection module (17) with a second light source (67) for emitting light, a second lens (25) for projecting the light and a second diaphragm element (65) arranged between the second light source (67) and the second lens (25) is designed to generate the second light-dark boundary and that the adjusting means (63) are adapted to adjust the position of the first diaphragm element (37) relative to the second diaphragm element (65), the position of the first light-dark boundary being determinable so that a predetermined total light distribution by superposition of the first light distribution with the second light distribution can be generated. Fahrzeugscheinwerfer (13) nach Anspruch 1, dadurch gekennzeichnet, dass die Justiermittel (63) derart ausgebildet sind, dass mittels der Justiermittel (63) die beiden Helldunkelgrenzen zur Deckung gebracht werden können.Vehicle headlight (13) according to claim 1, characterized in that the adjusting means (63) are designed such that by means of the adjusting means (63), the two chiaroscuro boundaries can be made to coincide. Fahrzeugscheinwerfer (13) nach Anspruch 3, dadurch gekennzeichnet, dass das zweite Blendenelement (65) relativ zum Rest des zweiten Lichtmoduls (17) fest angeordnet ist.Vehicle headlight (13) according to claim 3, characterized in that the second diaphragm element (65) relative to the rest of the second light module (17) is fixedly arranged. Fahrzeugscheinwerfer (13) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das erste Blendenelement (37) gegenüber dem Rest des ersten Lichtmoduls (15) in einer zu einer optischen Achse (43) des ersten Lichtmoduls (15) orthogonalen Justierrichtung (83) verschiebbar gelagert ist und die Justiermittel (63) zum Verschieben des ersten Blendenelements (37) entlang der Justierrichtung (83) eingerichtet sind.Vehicle headlight (13) according to one of the preceding claims, characterized in that the first diaphragm element (37) relative to the remainder of the first light module (15) in a direction of an optical axis (43) of the first light module (15) orthogonal adjustment direction (83) displaceable is mounted and the adjusting means (63) for moving the first diaphragm element (37) along the adjustment direction (83) are arranged. Fahrzeugscheinwerfer (13) nach Anspruch 4, dadurch gekennzeichnet, dass die Justiermittel (63) einen Bolzen (51) aufweisen, wobei eine Längsachse (55) des Bolzens (51) zumindest im Wesentlichen parallel zur Justierrichtung (83) verläuft, der Bolzen (51) an einem ersten Ende in der Justierrichtung (83) gegenüber dem ersten Blendenelement (37) unbeweglich mit dem ersten Blendenelement (37) verbunden ist und die Justiermittel (63) derart zum Verändern der Lage des Bolzens (51) in der Justierrichtung (83) eingerichtet sind, dass die Lage der ersten Helldunkelgrenze durch Bewegen des ersten Blendenelements (37) entlang der Justierrichtung (83) einstellbar ist.Vehicle headlight (13) according to claim 4, characterized in that the adjusting means (63) have a bolt (51), wherein a longitudinal axis (55) of the bolt (51) extends at least substantially parallel to the adjusting direction (83), the bolt (51 ) at a first end in the adjustment direction (83) relative to the first diaphragm element (37) is immovably connected to the first diaphragm element (37) and the adjusting means (63) for changing the position of the bolt (51) in the adjustment direction (83). in that the position of the first light-dark boundary is adjustable by moving the first diaphragm element (37) along the adjustment direction (83). Fahrzeugscheinwerfer (13) nach Anspruch 5, dadurch gekennzeichnet, dass die Justiermittel (63) ein Halteelement (41) aufweisen, an dem der Bolzen (51) um seine Längsachse (55) drehbar gehalten ist, wobei ein Außengewindeabschnitt (53) des Bolzens (51) mit einem Innengewindeabschnitt (49) in Eingriff steht, sodass durch Drehen des Bolzens (51) um seine Längsachse (55) der Bolzen (51) entlang der Justierrichtung (83) zum Justieren der Lage des ersten Blendenelements (37) bewegbar ist.Vehicle headlight (13) according to claim 5, characterized characterized in that the adjusting means (63) comprise a retaining element (41) on which the bolt (51) is rotatably held about its longitudinal axis (55), an externally threaded portion (53) of the bolt (51) having an internally threaded portion (49) in Engaging so that by turning the bolt (51) about its longitudinal axis (55) of the bolt (51) along the adjustment direction (83) for adjusting the position of the first diaphragm element (37) is movable. Fahrzeugscheinwerfer (13) nach Anspruch 6, dadurch gekennzeichnet, dass der Bolzen (51) an einem von dem ersten Blendenelement (37) abgewandten zweiten Ende einen Kopfabschnitt (61) aufweist, der drehfest mit einem Justierwerkzeug zum Betätigen der Justiermittel (63) verbindbar ist.A vehicle headlamp (13) according to claim 6, characterized in that the bolt (51) at one of the first panel member (37) facing away from the second end has a head portion (61) which is rotatably connected to an adjusting tool for actuating the adjusting means (63) , Fahrzeugscheinwerfer (13) nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass der Fahrzeugscheinwerfer (13) und/oder das erste Lichtmodul (15) ein Gehäuseelement (19) und das erste Blendenelement (37) einen Befestigungsabschnitt (39) aufweist, wobei der Befestigungsabschnitt (39) zwischen dem Halteelement (41) und dem Gehäuseelement (19) angeordnet ist.Vehicle headlight (13) according to claim 6 or 7, characterized in that the vehicle headlight (13) and / or the first light module (15) has a housing element (19) and the first diaphragm element (37) has a fastening portion (39), wherein the fastening portion (39) is arranged between the holding element (41) and the housing element (19). Fahrzeugscheinwerfer (13) nach Anspruch 8, dadurch gekennzeichnet, dass das Halteelement (41) mindestens einen Federabschnitt (56) aufweist, der zum Drücken des Befestigungsabschnitts (39) des ersten Blendenelements (39) gegen das Gehäuseelement (19) ausgebildet ist.Vehicle headlight (13) according to claim 8, characterized in that the holding element (41) has at least one spring portion (56) which is designed to press the fastening portion (39) of the first diaphragm element (39) against the housing element (19). Fahrzeugscheinwerfer (13) nach einem der Ansprüche 6 bis 9, dadurch gekennzeichnet, dass das Halteelement als eine aus elastischem Blech gebildete Haltefeder (41) ausgebildet ist.Vehicle headlight (13) according to any one of claims 6 to 9, characterized in that the holding element is formed as a retaining spring (41) formed of elastic sheet metal. Fahrzeugscheinwerfer (13) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das erste Blendenelement (37) und/oder das zweite Blendenelement (65) zumindest abschnittsweise eine in und/oder entgegen der Hauptlichtabgaberichtung (72) gewölbte Form aufweist.Vehicle headlight (13) according to one of The preceding claims, characterized in that the first diaphragm element (37) and / or the second diaphragm element (65) at least partially has a curved in and / or against the main light emission direction (72) curved shape. Fahrzeugscheinwerfer (13) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das erste Blendenelement (37) und/oder das zweite Blendenelement (65) an einer Kante (74) zum Bilden der Helldunkelgrenze mindestens einen Absatz (75) und/oder mindestens einen Abschnitt mit einer Fase (73) aufweist.Vehicle headlight (13) according to one of the preceding claims, characterized in that the first diaphragm element (37) and / or the second diaphragm element (65) at one edge (74) for forming the light-dark boundary at least one shoulder (75) and / or at least one Section with a chamfer (73). Fahrzeugscheinwerfer (13) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das erste Blendenelement (37) und/oder das zweite Blendeelement (65) mindestens eine Öffnung (77) zum Durchlassen von Licht aufweist.Vehicle headlight (13) according to one of the preceding claims, characterized in that the first diaphragm element (37) and / or the second diaphragm element (65) has at least one opening (77) for the passage of light. Fahrzeugscheinwerfer (13) nach Anspruch 14, dadurch gekennzeichnet, dass die Öffnung (77) von einem Lichtfilter (78) derart verdeckt ist, dass das Lichtfilter (78) das von der Lichtquelle (29, 67) des jeweiligen Lichtmoduls (15, 17) ausgesandte Licht beeinflussen kann.Vehicle headlight (13) according to claim 14, characterized in that the opening (77) of a light filter (78) is covered such that the light filter (78) of the light source (29, 67) of the respective light module (15, 17). can affect emitted light. Fahrzeugscheinwerfer (13) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass, das erste Blendenelement (37) und/oder die zweite Blendenelement (65) aus Kunststoff besteht.Vehicle headlight (13) according to one of the preceding claims, characterized in that , the first diaphragm element (37) and / or the second diaphragm element (65) consists of plastic. Fahrzeugscheinwerfer (13) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die ersten Lichtquelle (29) und/oder die zweite Lichtquelle (67) eine oder mehrere Leuchtdioden (33) umfasst.Vehicle headlight (13) according to one of the preceding claims, characterized in that the first light source (29) and / or the second light source (67) comprises one or more light-emitting diodes (33).
EP10014053.2A 2009-11-06 2010-10-28 Vehicle headlamp Not-in-force EP2320132B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009052233A DE102009052233A1 (en) 2009-11-06 2009-11-06 vehicle headlights

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EP2320132A1 true EP2320132A1 (en) 2011-05-11
EP2320132B1 EP2320132B1 (en) 2014-12-03

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EP10014053.2A Not-in-force EP2320132B1 (en) 2009-11-06 2010-10-28 Vehicle headlamp

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EP (1) EP2320132B1 (en)
DE (1) DE102009052233A1 (en)
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5190368A (en) * 1991-03-22 1993-03-02 Stanley Electric Co., Ltd. Four lamp type headlamp
EP2028414A1 (en) * 2007-08-22 2009-02-25 Koito Manufacturing Co., Ltd Vehicle headlamp
DE102007040728A1 (en) 2007-08-29 2009-03-05 Automotive Lighting Reutlingen Gmbh Vehicle headlight for use with light emitting diode lighting system, comprises reflection module, which produces light dark boundary, and light source is provided for emission of radiation, particularly from visible light

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5190368A (en) * 1991-03-22 1993-03-02 Stanley Electric Co., Ltd. Four lamp type headlamp
EP2028414A1 (en) * 2007-08-22 2009-02-25 Koito Manufacturing Co., Ltd Vehicle headlamp
DE102007040728A1 (en) 2007-08-29 2009-03-05 Automotive Lighting Reutlingen Gmbh Vehicle headlight for use with light emitting diode lighting system, comprises reflection module, which produces light dark boundary, and light source is provided for emission of radiation, particularly from visible light

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ES2531832T3 (en) 2015-03-20
EP2320132B1 (en) 2014-12-03
DE102009052233A1 (en) 2011-05-12

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