EP3428512B1 - Light module of a motor vehicle headlight and headlight with such a light module - Google Patents

Light module of a motor vehicle headlight and headlight with such a light module Download PDF

Info

Publication number
EP3428512B1
EP3428512B1 EP18182604.1A EP18182604A EP3428512B1 EP 3428512 B1 EP3428512 B1 EP 3428512B1 EP 18182604 A EP18182604 A EP 18182604A EP 3428512 B1 EP3428512 B1 EP 3428512B1
Authority
EP
European Patent Office
Prior art keywords
headlamp
sheet metal
metal part
light
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18182604.1A
Other languages
German (de)
French (fr)
Other versions
EP3428512A1 (en
Inventor
Andreas Stang
Bernd Schulz
Simon Schuler
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 EP3428512A1 publication Critical patent/EP3428512A1/en
Application granted granted Critical
Publication of EP3428512B1 publication Critical patent/EP3428512B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141Light emitting diodes [LED]
    • F21S41/147Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141Light emitting diodes [LED]
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19Attachment of light sources or lamp holders
    • F21S41/192Details of lamp holders, terminals or connectors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32Optical layout thereof
    • F21S41/321Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/39Attachment thereof
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40Cooling of lighting devices
    • F21S45/47Passive cooling, e.g. using fins, thermal conductive elements or openings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40Cooling of lighting devices
    • F21S45/49Attachment of the cooling means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00Fastening of light sources or lamp holders
    • F21V19/001Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21WINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10Arrangement or contour of the emitted light
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21WINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10Use or application of lighting devices on or in particular types of vehicles for land vehicles
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING 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
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

Definitions

  • the present invention relates to a motor vehicle headlight with a light module according to the preamble of claim 1.
  • a motor vehicle headlight is from the EP 3 128 230 A1 and also from the JP 2014 165150 A known.
  • the light module comprises at least one semiconductor light source that is fixed and electrically contacted on a circuit board and a bundling optics as well as a heat sink on which the board and the bundling optics are fastened.
  • the relative position of the at least one semiconductor light source and the focusing optics is set and fixed with high accuracy.
  • this must be set and fixed again with high accuracy relative to the headlight housing (so-called adjustment).
  • Light distributions must be coordinated with one another in the horizontal but in particular in the vertical direction, in particular if a plurality of light modules are to produce a predetermined light distribution together, for example a dimmed light distribution with a horizontal light-dark boundary.
  • headlights with several light modules are known in the prior art, one of the light modules producing a basic light distribution with a relatively wide scatter (wide light bundle with normal intensity) and a strictly horizontal Patoscuro limit, and another of the light modules producing a spot light distribution with a compared to Basic light distribution generates significantly less scatter (concentrated light beam with high intensity) and an asymmetrical Cadoscuro limit.
  • a superimposition of basic light and spot light then produces the resulting dimmed light distribution (eg low beam) of the headlamp. It is important that the light-dark limits of the basic light and the spot light are coordinated with one another, especially at the same height. For this reason, an adjustment of the individual light modules or the Corposcuro limits of the light distributions generated by the light modules, in particular in the vertical direction, is necessary.
  • additional components are currently required for setting the optically active components of a light module (at least one semiconductor light source and bundling optics).
  • a printed circuit board on which the at least one light source is fastened and contacted, is assembled with a bundling optics designed as a reflector and a heat sink to form a common assembly.
  • This assembly is then attached to an additional adjustable component of the light module, so that the light module by means of the adjustable component can be adjusted relative to other light modules or relative to the headlight housing.
  • An additional adjustable component leads to increased material and assembly costs for the light module or the entire headlight.
  • an additional adjustable component means that a further component with tolerance is present in the tolerance chain between the housing of the headlight and the optically active components of the light module. As a result, the accuracy with which the resulting light distribution of the light module or of the entire headlight can be adjusted suffers.
  • the space required by the light module is also increased by the additional adjustable component.
  • the object of the present invention is to reduce the number of components of a light module with at least one semiconductor light source which are required to produce a resultant light distribution, in particular a low beam.
  • the sheet metal part bent into a three-dimensional shape in turn consists of a fixed section, which is in a fixed relationship to a housing of the headlamp when the light module is installed in the housing of the headlamp, and a section movable relative to the fixed section, wherein the circuit board with the at least one semiconductor light source and the focusing optics are attached to the movable section of the sheet metal part and the movable section for adjusting the light module installed in the housing of the headlamp together with the at least one semiconductor light source and the focusing optics relative to the fixed section is movable and can be fixed in an adjusted position relative to it.
  • the concept provides for the light source (s) or another optically active component (bundling or primary optics, possibly secondary optics) of the light module to be moved slightly, for example by a small angle in order to pivot a light-dark boundary of the light distribution generated by the light module to be adjusted at a defined distance from the light module (for example on the road in front of the motor vehicle equipped with the headlight or on a measuring screen arranged in front of the motor vehicle).
  • the light source or another optically active component of the light module must be pivoted by approximately 0.1 °. With such small angles, one can speak approximately of a vertical adjustment of the optical unit in connection with the pivoting movement.
  • an adjustment system which is provided in particular in order to vary the orientation of the optically active components (light source (s), bundling or primary optics, possibly secondary optics) of the light module in the vertical direction, is integrated in the heat sink of the light module.
  • the heat sink is designed as a bent sheet metal part, which is deformable due to the material properties of the sheet metal and with a suitable design of the sheet metal molded part.
  • the sheet metal part is preferably designed as an aluminum sheet, since aluminum has particularly good thermal conductivity properties.
  • An aluminum sheet is plastically deformable.
  • another metal for example steel, in particular an elastically deformable spring steel, could also be used for the heat sink designed as a sheet metal part.
  • the adjustment system integrated in the heat sink reduces the number of components required for the light module. In addition, the weight and the required installation space of the light module are reduced. Another function is assigned to the heat sink, namely the setting or adjustment of the light module relative to another light module of the headlight or to the headlight housing or to another component rigidly connected thereto, for example a support element fastened to the housing of the headlight.
  • the light module according to the invention or its setting system can be implemented in a particularly simple and inexpensive manner.
  • the material and assembly costs can be reduced by reducing the number of components in the light module. This is particularly important against the background of the very large quantities achieved in motor vehicle construction and the ever increasing cost pressure on the part of motor vehicle manufacturers.
  • at least one link in the tolerance chain that is subject to tolerance can be eliminated, so that the accuracy of the light distribution generated by the light module according to the invention can be improved. This is particularly important in the case of light modules which produce a dimmed light distribution with a horizontal light-dark boundary (for example basic light distribution of a low beam, spot light distribution of a low beam or a low beam distribution).
  • the Patoscuro limit can be shifted so far up that on the one hand the apron of the Motor vehicle is illuminated as far as possible and on the other hand other road users (the occupants of vehicles driving ahead or oncoming vehicles) are not dazzled.
  • the light module according to the invention can be adjusted not only in the vertical direction but also in the horizontal direction. This applies e.g. for a light module for generating a partial high beam or a marker light, both of which have a vertical light-dark limit
  • the heat sink consists of sheet metal which is suitably bent into a certain three-dimensional shape.
  • the heat sink in a suitable manner means that the heat sink, on the one hand, can efficiently dissipate the heat emitted by the at least one semiconductor light source during operation of the light module and release it to the surroundings, thereby overheating the light source (s), even when the light module is in long-term operation can be effectively and safely prevented at full power and even at high outside temperatures.
  • all optically active components in particular the at least one semiconductor light source and the bundling optics, can be attached to the heat sink.
  • the heat sink of the light module has the function of the relative position of the optically active components of the light module relative to a housing of the headlight in which the light module is installed, or to the fixed section of the heat sink, which is at least indirectly on the housing the headlight is attached to vary and the optically effective components of the light module in the adjusted position (position and / or orientation) in the headlight housing to be determined.
  • a section of the sheet metal part can be designed to be movable with respect to another fixed section of the sheet metal part.
  • the optically active components of the light module are fastened to this movable section, so that they, together with the movable section, relative to the fixed section and thus relative to the housing of the headlight, to which the fixed section is at least indirectly fastened, for the purpose of adjusting the Light module can be adjusted and set in the adjusted position.
  • the bundling optics comprises a reflector, in particular a half-shell reflector.
  • the reflector is used to bundle the light of the semiconductor light source (s) and to redirect it into a light exit direction of the light module, optionally in cooperation with an optical lens arranged in the beam path of the light emitted by the at least one semiconductor light source.
  • the semiconductor light source (s) is / are arranged relative to the reflector in such a way that their main emission direction strikes the reflection surface.
  • the reflector is preferably parabolic in a longitudinal section, which includes the main emission direction of a semiconductor light source and the light exit direction of the light module. Overall, the reflector preferably has the shape of a paraboloid, so that the reflected light beams are collimated approximately parallel to the light exit direction.
  • the at least one semiconductor light source comprises a light-emitting diode (LED) or laser diode.
  • LED light-emitting diode
  • Several LEDs can be arranged one above the other and / or next to one another in a matrix, so that they form an LED array.
  • the LEDs of a semiconductor light source can be controlled individually, in groups or all together.
  • the movable section of the sheet metal part can be pivoted about at least one adjustment axis relative to the fixed section of the sheet metal part.
  • the adjustment axis can be formed by material tapers and / or slots in the material of the sheet metal part, which extend along the adjustment axis.
  • stabilizing structures can be provided in the other areas of the sheet metal part, in particular in the fixed section of the sheet metal part, so that the movement of a part of the heat sink is largely limited to the movable section and the fixed section is, if possible, not movable or deformable. The relative movement between the movable and fixed sections of the sheet metal part is thus limited to the adjustment axis.
  • the adjustment axis of the movable section advantageously runs essentially horizontally and perpendicularly to the light exit direction of the light module.
  • the adjustment axis is preferably arranged in the front half of the sheet metal part, in particular on the front side of the sheet metal part.
  • the movable section of the sheet metal part comprises at least one upper side on which the circuit board with the at least one semiconductor light source and the bundling optics are fastened.
  • the upper side of the movable section advantageously has a main surface extension that is essentially horizontal or slightly oblique to it.
  • the upper side of the movable section preferably has a main surface extension that is opposite to the direction of travel of a vehicle equipped with the headlight and relative to a horizontal plane that is parallel to the light exit direction of the light module and thus also runs parallel to the direction of travel or a vehicle longitudinal axis of the motor vehicle, runs slightly inclined to the rear.
  • the main emission direction of the at least one semiconductor light source mounted on the movable section of the sheet metal part thus has a component directed towards the rear, counter to the light exit direction of the light module or the direction of travel of the motor vehicle.
  • the movable section of the sheet metal part comprises side surfaces that preferably each have a surface extension in a vertical plane, which has a main surface extension perpendicular to the top of the movable section.
  • the top of the sheet metal part together with the side surfaces would be adjustable relative to the remaining fixed section of the sheet metal part and relative to the headlight housing.
  • the side surfaces make a relatively large contribution to the cooling function of the heat sink. Therefore, the side surfaces are preferably also spaced from the carrier element to which the fixed section of the sheet metal part is attached and which in turn is fixed to the headlight housing.
  • the side surfaces can, however, be in point contact with the carrier element in order to reduce, preferably completely, prevent a thermally induced rotary movement of the movable section of the heat sink about the z-axis relative to the fixed carrier element.
  • the fixed section of the sheet metal part comprises at least part of a front side of the sheet metal part, which is fixed at least indirectly to the housing of the headlight.
  • the fixed section of the sheet metal part is at least indirectly attached to the headlight housing by means of at least one fastening screw.
  • the fixed section of the sheet metal part is particularly preferably fixed to the housing of the headlight indirectly via a carrier element which is fastened to the housing of the headlight in an assembled state of the headlight.
  • the carrier element is preferably made of thermally conductive plastic, that is to say from plastics in which ceramic, organic or metallic fillers are inserted.
  • the carrier element serves to accommodate one or more light modules and is then integrated as a unit with them in the housing of the headlight arranged and fixed therein.
  • the carrier element can be adjusted horizontally and / or vertically relative to the housing as a whole.
  • the movable section of the sheet metal part can be moved relative to the fixed section of the sheet metal part by means of at least one adjusting screw and can be fixed in an adjusted position relative thereto.
  • the light module comprises a spring element which acts counter to an adjustment direction which can be brought about by the adjusting screw between the movable section of the sheet metal part and the housing of the headlamp or with a component firmly connected thereto, for example a carrier element fastened to the housing of the headlamp.
  • the spring element can be designed as a compression spring or as a tension spring.
  • the spring element is particularly preferably designed in the form of a spiral spring, which preferably surrounds the adjusting screw.
  • the adjusting screw or its shaft preferably has a longitudinal extension in the direction of adjustment of the optically active components of the light module, in particular in the vertical z-direction of the light module.
  • the at least one adjusting screw is passed through a (preferably unthreaded) opening in the movable section of the sheet metal part and screwed into a threaded bore in the fixed section of the sheet metal part or in a component fastened to it (for example a carrier element or headlight housing).
  • the underside of the screw head forms an annular support surface which rests on the top of the movable section of the sheet metal part.
  • the adjusting screw is screwed into a threaded opening in the movable section of the sheet metal part, and it can be adjusted by turning the screw how far the screw shaft extends beyond the underside of the movable section of the sheet metal part.
  • the distal end of the screw opposite the screw head is supported on the housing of the headlamp or on a part firmly connected thereto, in particular on the carrier element which is fastened to the housing of the headlamp in an assembled state of the headlamp, or on the fixed section of the sheet metal part.
  • the component on which the distal end of the adjusting screw is supported is made of plastic, it is conceivable to reinforce at least the support area where the distal end of the adjusting screw is supported on the component by a metal plate in order to press in the distal end to prevent the adjustment screw in the material of the component.
  • the tension spring is fixed both on the movable section of the sheet metal part and on the fixed section of the sheet metal part or a component fastened to it (e.g. the support element or the headlight housing). Accordingly, the movable section of the sheet metal part moves again in the direction of the fixed section of the sheet metal part, driven by the spring force of the spring element, so that the distance is reduced as soon as the adjusting screw is unscrewed from the threaded bore and opens the way for increasing the distance.
  • a separate tension spring could be dispensed with and instead the inherent spring force of the metal could be used.
  • the distance between the movable section and the fixed section of the sheet metal part can be varied until the optical components of the light module, which are attached to the movable section, are in an adjusted position (position and / or orientation ) are located.
  • the screw is designed to prevent automatic loosening, for example due to vibrations in the motor vehicle, so that the optical components are automatically fixed in this position after reaching the adjusted position.
  • the spring element holds the movable section and thus also the optical components in the adjusted position and prevents vibrations or tremors movable section and the optical components.
  • the invention also relates to a
  • Motor vehicle headlight which comprises a housing and at least one light module according to the invention arranged therein.
  • the headlamp preferably has a plurality of light modules arranged next to one another and fastened to a common carrier element, which is fastened to a housing of the headlamp in an assembled state of the headlamp, which are each individually adjustable relative to one another and with respect to the carrier element, and which can be adjusted jointly by adjusting the carrier element are adjustable with respect to the housing of the headlamp.
  • a light module for generating a spot light of a low beam distribution, another light module for generating a basic light of the low beam distribution and a third light module for generating a high beam distribution is provided by, for example, only one area above the horizontal Patoscuro limit of the low beam distribution illuminates.
  • a headlight of a motor vehicle according to the invention is designated in its entirety with reference number 1.
  • the headlight 1 is arranged and fastened in a corresponding installation opening in the front area of the body of a motor vehicle.
  • the headlight 1 has a housing 2, which is preferably made of plastic.
  • the housing 2 In a light exit direction 3, the housing 2 has a light exit opening 4, which is closed by means of a transparent cover plate 5.
  • the cover plate 5 is made of glass or plastic. At least in certain areas, optically active elements (for example prisms or cylindrical lenses) can be arranged on the cover plate 5 in order to scatter the light passing through (so-called diffusing plate). However, it is also conceivable that the cover plate 5 is designed without such optically active elements (so-called clear plate).
  • the light module 6 can be used to generate any headlight function or a part thereof.
  • the light module 6 can be used to generate a low beam distribution, a high beam distribution, a fog light distribution or any adaptive light distribution or a part thereof.
  • the light module 6 it would also be conceivable for the light module 6 to be designed to generate a light function, for example a daytime running light, a side light and / or a flashing light or a part thereof.
  • At least one further light module 7 can be arranged in the housing 2, which can also be designed as a light module according to the invention.
  • the further light module 7 is used, for example, to generate a further headlight and / or lamp function or a part thereof.
  • the light modules 6, 7 together produce an intended headlight or luminaire function of the headlight 1.
  • the light module 7 could generate a low-beam basic light distribution with a relatively wide scatter and a strictly horizontal Patoscuro limit.
  • the light module 6 could then produce a low beam spot light distribution which is relatively strongly concentrated in comparison to the low beam basic light distribution of the light module 7 and has an asymmetrical light-dark boundary on the upper side.
  • the asymmetrical Cadoscuro limit has a higher profile on its own traffic side than on the oncoming traffic side. A superimposition of the basic light distribution and the spot light distribution results in a conventional low beam distribution.
  • the present invention proposes a light module 6 in which an adjustment of the light module 6 or the Virtuoscuro limit of a dimmed light distribution of the light module 6, in particular in the vertical direction, can be implemented in a simple and inexpensive manner.
  • the light module 6 according to the invention is described below with reference to FIG Figures 1 to 5 explained in more detail.
  • the light modules 6, 7, further light modules are arranged in the headlight housing 2, but these are not shown here.
  • only one light module for example the light module 6 without the light module 7, can be arranged in the headlight housing 2.
  • at least one motor vehicle light can also be arranged in the housing 2, such as the light module 8 shown by way of example.
  • the light module 8 is used to generate at least one light function, for example a flashing light, a position light, a daytime running light, etc.
  • the light module 6 is in the Figures 1 , 2nd and 5 shown in detail. This in Figure 1 The coordinate system shown also applies to the rest Figures 2 to 5 .
  • the light module 6 comprises at least one semiconductor light source 11 which is fixed and electrically contacted on a circuit board 10.
  • the semiconductor light source 11 preferably comprises at least one light-emitting diode (LED) or laser diode.
  • the LEDs can be arranged in a matrix above and next to one another to form an LED array.
  • the Semiconductor light source 11 emits light in a vertically upward main emission direction 12.
  • the light module 6 further comprises a bundling optics 13, which in the example shown here is designed as a reflector, in particular as a so-called half-shell reflector.
  • the reflector has a mirrored reflection surface facing the semiconductor light source 11, which is shaped in such a way that it bundles the light emitted by the light source 11 in the main emission direction 12 approximately into a 180 ° half-space and deflects it in the light exit direction 3.
  • the reflector or its reflection surface have the shape of a paraboloid or a free-form surface based on a paraboloid, so that the reflected light beams are collimated approximately parallel to the light exit direction 3.
  • the reflector can also have a radiation diaphragm (not shown), which is to avoid stray light. This radiation diaphragm can be attached, for example, in front of the opening 13b.
  • the bundling optics 13 has a base plate 13a which is provided with an opening 13b through which the light emitted by the light sources 11 can pass.
  • the bundling optics 13, for example on the underside of the base plate 13a can have positioning elements, for example in the form of positioning pins, which engage in corresponding openings on the top of a heat sink 14 (cf. Figures 3 and 4 ) to enable a highly precise positioning of the bundling optics 13 relative to the at least one semiconductor light source 11 in a simple and reliable manner.
  • the bundling optics 13 is preferably made of a thermoplastic in order to also include more complex geometries, for example for the positioning pins and / or one Radiation aperture to be able to realize with higher accuracy.
  • the light module 6 further comprises the heat sink 14, the primary task of which is to absorb the heat emitted by the light sources 11 during operation of the light module 11, to dissipate it and to dissipate it to the surroundings in order to prevent the light sources 11 from overheating.
  • the heat sink 14 in particular on an upper side 15 of the heat sink 14, the circuit board 10 with the semiconductor light sources 11 fastened and contacted thereon and the bundling optics 13 are fastened.
  • a fastening screw 16 is provided which passes through a first opening in the base plate 13a of the bundling optics 13 and a second opening in the board 10 and into a threaded opening in a Top 15 of the heat sink 14 is screwed.
  • the base plate 13a of the bundling optics 13 and the circuit board 10 are firmly clamped between the underside of the screw head of the fastening screw 16 and the upper side 15 of the heat sink 14.
  • clips or clips 17 can also be provided for fastening the circuit board 10 with the light sources 11 and the bundling optics 13 on the heat sink 14, said clips pressing the base plate 13a of the bundling optics 13 downward against the upper side 15 of the heat sink 14 and the circuit board 13 clamp in between.
  • the base plate 13a of the bundling optics 13 and the circuit board 10 are firmly clamped between an upper bracket of the clips or clips 17 and the upper side 15 of the heat sink 14.
  • the light module 6 is preferably designed to produce a dimmed (partial) light distribution with an essentially horizontal light-dark boundary, for example a low beam or a fog light, or a part thereof, for example a basic light or a spot light of a low beam distribution.
  • the light module 6 can also be designed to generate a high beam, in particular to illuminate a region of a high beam distribution above the horizontal Patoscuro limit of a dimmed light distribution.
  • the light module 6 can be handled as a unit and is intended for installation in the interior of a headlight housing 2.
  • the light module 6 has a heat sink 14, in which an adjustment system for adjusting the light module is integrated.
  • the concept provides for the light module (s) 11 or another optically active component (bundling or primary optics 13, possibly secondary optics for projecting the light distribution onto the road ahead of the motor vehicle) of the light module 6 to be moved slightly, for example by a small one
  • To pivot the angle in order to adjust the Patoscuro limit of the light distribution generated by the light module 6 at a defined distance from the light module 6.
  • the light source 11 or another optically active component of the light module 6 must be pivoted by approximately 0.1 °. With such small angles, the vertical adjustment can be approximated
  • Optical unit can be spoken in connection with the pivoting movement.
  • the heat sink 14 comprises a sheet metal part bent into at least one bending axis 18 into a three-dimensional shape, which in turn has a fixed section 19 which is in a fixed relationship to a housing 2 of the headlight 1 when the light module 6 is installed in the housing 2 of the headlight 1 and includes a portion 20 movable relative to the fixed portion 19.
  • the fixed section 19 of the heat sink 14 designed as a sheet metal part preferably comprises at least part of a front side (directed in the direction of light exit 3) of the heat sink 14, which is at least indirectly attached to the housing 2 of the headlight 1.
  • the fixed portion 19 is indirectly attached to the housing 2 via a carrier element 21 which is fastened to the housing 2 of the headlight 1.
  • the carrier element 21 can consist of metal or plastic. It particularly preferably consists of a thermally conductive plastic.
  • the fixed section 19 of the heat sink 14 designed as a sheet metal part is fastened to the carrier element 21 by means of two fastening screws 22. Fastening by means of one or more than two fastening screws 22 or in another way is also conceivable.
  • the positioning pins 21a are formed in the carrier element 21 and the positioning openings 19a in the fixed section 19 of the heat sink 14 formed as a sheet metal part.
  • the positioning openings in the carrier element 21 and the positioning pins are formed in the fixed section 19 of the heat sink 14 designed as a sheet metal part.
  • the fixed section 19 can also be fastened in any other way than with the fastening screws 22 and as via the carrier element 21 to the housing 2 of the headlight 1.
  • the movable section 20 of the heat sink 14 formed as a sheet metal part comprises at least one upper side 15.
  • the upper side 15 has a main surface extension which is almost horizontal, more precisely slightly oblique to it (cf. Figure 5 ).
  • the upper side 15, when the light module 6 is installed and adjusted in the housing 2 of the headlight 1, has a main surface extension which is slightly backward in a horizontal plane by approximately 10 ° (in the -x direction), i.e. counter to the direction of travel of the Motor vehicle or inclined against the light exit direction 3 of the headlamp 1.
  • the heat sink 14 designed as a sheet metal part has a lower height at its rear end (counter to the light exit direction 3) than at its front end (in the light exit direction 3).
  • the movable section 20 also includes side surfaces 23.
  • the side surfaces 23 are bent downwards at the side bending edges 18 from the top side 15.
  • the movable section 20 of the heat sink 14 designed as a sheet metal part is thus significantly larger than the fixed section 19.
  • the side surfaces 23 make a large contribution to the Cooling function of the heat sink 14. Therefore, the side surfaces 23 are preferably also spaced apart from the carrier element 21.
  • the side surfaces 23 can also be in point contact with the carrier element 21 in order to reduce, preferably completely, prevent a thermally induced rotational movement or twisting of the movable section 20 of the heat sink 14 about the z-axis relative to the fixed carrier element 21.
  • the circuit board 10 with the at least one semiconductor light source 11 and the bundling optics 13 are fastened on the movable section 20 of the sheet metal part 14, in particular on the upper side 15 of the movable section 20.
  • the movable section 20 can be moved together with the at least one semiconductor light source 11 and the focusing optics 13 relative to the fixed section 19 and can be fixed in an adjusted position relative thereto.
  • the movable section 20 of the heat sink 14 designed as a sheet metal part is preferably movable about an adjustment axis 24 relative to the fixed section 19.
  • the adjustment axis 24 runs essentially horizontally and perpendicular to a light exit direction 3 of the light module 6.
  • the adjustment axis 24 can be formed by material removal or tapering and / or slots in the material of the heat sink 14 designed as a sheet metal part, which extend along the adjustment axis 24 .
  • the sheet metal part comprises a plurality of slots 25 in the area of the adjustment axis 24, which extend along the adjustment axis 24.
  • the individual slots 25 are only interrupted by webs 26, which produce a connection between the fixed section 19 and the movable section 20 of the heat sink 14 designed as a sheet metal part.
  • the longitudinal axes of the slots 25 to a certain extent form the adjustment axis 24.
  • the movable section 20 of the heat sink 14 designed as a sheet metal part.
  • the movable section 20 of the sheet metal part can be moved by means of an adjusting screw 27 relative to the fixed section 19 of the sheet metal part or an associated other component of the headlight 1, for example relative to the support element 21, and in an adjusted position relative to be determined.
  • the movement of the movable section 20 of the sheet metal part by means of the adjusting screw 27 preferably takes place against the force of a spring element 31.
  • the sheet metal part consists of an elastically deformable material, for example spring steel, a separate spring element 31 could possibly also be dispensed with.
  • several adjustment screws 27 can also be provided.
  • the adjusting screw 27 is preferably passed through an opening (preferably without thread) in the movable section 20 of the heat sink 14 formed as a sheet metal part and into a threaded bore 28 of the housing 2 of the headlight 1 or a part connected therewith, in particular the carrier element 21, that is fastened to the housing 2 of the headlamp 1 in an assembled state of the headlamp 1.
  • the movable section 20 of the sheet metal part is moved away from the carrier element 21 due to the spring force of the spring element 31 and the light exit direction 3 of the light module 6 is adjusted vertically downward.
  • the adjustment movement of the movable section 20 and with it the light sources 11 and the focusing optics 13 is shown in FIG Figure 5 represented by a double arrow 29.
  • the rotary movement about the adjustment axis 24 is represented by a double arrow 30.
  • the spring element 31 is preferably designed as a compression spring and spiral spring.
  • the spring element 31 designed as a spiral spring surrounds the adjusting screw 27 or its screw shaft.
  • the spring element 31 acts between the movable section 20 of the sheet metal part and the housing 2 of the headlight 1 or a component connected therewith, in particular with the carrier element 21, which is fastened to the housing 2 of the headlight 1 in an assembled state of the headlight 1 .
  • the spring element 31 counteracts the adjustment movement of the movable section 20 caused by the adjustment screw 27.
  • the spring element 31 acts in such a way that it pushes the movable section 20 and the carrier element 21 apart and thus increases the distance between them (i.e.
  • the spring element 31 also has the effect that the movable section 20 remains in a fixed, precisely defined position and does not vibrate or tremble, for example due to vibrations of the vehicle while driving.
  • Figure 7 is the interior of a motor vehicle headlight 1, which in this example has three light modules 6.1, 6.2 and 6.3 arranged next to one another.
  • the light modules also do not have to be next to one another, but instead can be arranged, for example, one above the other or offset in the headlight housing 2.
  • the light modules 6.1, 6.2, 6.3 are each fastened with the fixed section 19 of their heat sink 14 to a common carrier element 21.
  • each of the light modules 6.1, 6.2, 6.3 would be attached to its own carrier element 21.
  • the carrier element (s) 21 can be adjusted together relative to the housing 2 of the headlight 1, for example by pivoting about a horizontal axis 32 for realizing a headlight range adjustment or about a vertical axis (not shown) for realizing a dynamic cornering light function.
  • each light module 6.1, 6.2, 6.3 can be adjusted individually in the manner described above relative to the headlight housing 2 by moving the movable section 20 of the heat sink 14 relative to the fixed section 19 and is set in the adjusted position.
  • the light-dark boundary and a third light module 6, for example the light module 6.3 are designed to produce a high-beam distribution by illuminating, for example, only a region above the horizontal light-dark boundary of the low-beam light distribution.
  • a superposition of basic light and spot light then produces the resulting dimmed light distribution (for example low beam) of the headlight 1.
  • the individual light modules 6.1, 6.2, 6.3 By adjusting the individual light modules 6.1, 6.2, 6.3, the horizontal light-dark limits of the individual light distributions generated by the various light modules 6.1, 6.2, 6.3 can be superimposed on one another be aligned.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Description

Die vorliegende Erfindung betrifft einen Kraftfahrzeugscheinwerfermit einem Lichtmodul nach dem Oberbegriff des Anspruchs 1. Ein solcher Kraftfahrzeugscheinwerfer ist aus der EP 3 128 230 A1 und auch aus der JP 2014 165150 A bekannt. Das Lichtmodul umfasst mindestens eine auf einer Platine befestigte und elektrisch kontaktierte Halbleiterlichtquelle und eine Bündelungsoptik sowie einen Kühlkörper, auf dem die Platine und die Bündelungsoptik befestigt sind.
Im Rahmen der Montage des Lichtmoduls wird die Relativposition der mindestens einen Halbleiterlichtquelle und der Bündelungsoptik mit hoher Genauigkeit eingestellt und festgelegt. Bei der anschließenden Montage des Lichtmoduls in dem Gehäuse eines Kraftfahrzeugscheinwerfers muss dieses nochmals mit hoher Genauigkeit relativ zu dem Scheinwerfergehäuse eingestellt und festgelegt werden (sog. Justage). Dies ist insbesondere dann von Bedeutung, wenn mehrere Lichtmodule in dem Scheinwerfergehäuse angeordnet sind. Die von den einzelnen Lichtmodulen erzeugten Lichtverteilungen müssen in horizontaler aber insbesondere in vertikaler Richtung aufeinander abgestimmt werden, insbesondere wenn mehrere Lichtmodule gemeinsam eine vorgegebene Lichtverteilung, bspw. eine abgeblendete Lichtverteilung mit einer horizontalen Helldunkelgrenze, erzeugen sollen. So sind im Stand der Technik bspw. Scheinwerfer mit mehreren Lichtmodulen bekannt, wobei eines der Lichtmodule eine Grundlichtverteilung mit relativ breiter Streuung (breites Lichtbündel mit normaler Intensität) und einer streng horizontalen Helldunkelgrenze erzeugt, und ein anderes der Lichtmodule eine Spotlichtverteilung mit einer im Vergleich zur Grundlichtverteilung deutlich geringeren Streuung (konzentriertes Lichtbündel mit hoher Intensität) und einer asymmetrischen Helldunkelgrenze erzeugt. Eine Überlagerung von Grundlicht und Spotlicht erzeugt dann die resultierende abgeblendete Lichtverteilung (z.B. Abblendlicht) des Scheinwerfers. Dabei ist es wichtig, dass die Helldunkelgrenzen des Grundlichts und des Spotlichts aufeinander abgestimmt, insbesondere auf der gleichen Höhe, sind. Aus diesem Grund ist eine Justage der einzelnen Lichtmodule bzw. der Helldunkelgrenzen der durch die Lichtmodule erzeugten Lichtverteilungen, insbesondere in vertikaler Richtung, erforderlich.
The present invention relates to a motor vehicle headlight with a light module according to the preamble of claim 1. Such a motor vehicle headlight is from the EP 3 128 230 A1 and also from the JP 2014 165150 A known. The light module comprises at least one semiconductor light source that is fixed and electrically contacted on a circuit board and a bundling optics as well as a heat sink on which the board and the bundling optics are fastened.
As part of the assembly of the light module, the relative position of the at least one semiconductor light source and the focusing optics is set and fixed with high accuracy. During the subsequent assembly of the light module in the housing of a motor vehicle headlight, this must be set and fixed again with high accuracy relative to the headlight housing (so-called adjustment). This is particularly important if several light modules are arranged in the headlight housing. The generated by the individual light modules Light distributions must be coordinated with one another in the horizontal but in particular in the vertical direction, in particular if a plurality of light modules are to produce a predetermined light distribution together, for example a dimmed light distribution with a horizontal light-dark boundary. For example, headlights with several light modules are known in the prior art, one of the light modules producing a basic light distribution with a relatively wide scatter (wide light bundle with normal intensity) and a strictly horizontal chiaroscuro limit, and another of the light modules producing a spot light distribution with a compared to Basic light distribution generates significantly less scatter (concentrated light beam with high intensity) and an asymmetrical chiaroscuro limit. A superimposition of basic light and spot light then produces the resulting dimmed light distribution (eg low beam) of the headlamp. It is important that the light-dark limits of the basic light and the spot light are coordinated with one another, especially at the same height. For this reason, an adjustment of the individual light modules or the chiaroscuro limits of the light distributions generated by the light modules, in particular in the vertical direction, is necessary.

Nach dem Stand der Technik werden derzeit zur Einstellung der optisch wirksamen Bauteile eines Lichtmoduls (mindestens eine Halbleiterlichtquelle und Bündelungsoptik) zusätzliche Bauteile benötigt. Dabei wird eine Leiterplatte, auf der die mindestens eine Lichtquelle befestigt und kontaktiert ist, mit einer als Reflektor ausgebildeten Bündelungsoptik und einem Kühlkörper zu einer gemeinsamen Baugruppe zusammen verbaut. Diese Baugruppe wird dann auf einem zusätzlichen einstellbaren Bauteil des Lichtmoduls befestigt, so dass das Lichtmodul mittels des einstellbaren Bauteils relativ zu anderen Lichtmodulen bzw. relativ zu dem Scheinwerfergehäuse verstellt werden kann. Ein zusätzliches einstellbares Bauteil führt zu erhöhten Material- und Montagekosten des Lichtmoduls bzw. des gesamten Scheinwerfers. Zudem bedeutet ein zusätzliches einstellbares Bauteil, dass ein weiteres toleranzbehaftetes Bauteil in der Toleranzkette zwischen dem Gehäuse des Scheinwerfers und den optisch wirksamen Bauteilen des Lichtmoduls vorhanden ist. Dadurch leidet die Genauigkeit, mit der die resultierende Lichtverteilung des Lichtmoduls bzw. des gesamten Scheinwerfers eingestellt werden kann. Auch der durch das Lichtmodul beanspruchte Bauraum vergrößert sich durch das zusätzliche einstellbare Bauteil.According to the prior art, additional components are currently required for setting the optically active components of a light module (at least one semiconductor light source and bundling optics). In this case, a printed circuit board, on which the at least one light source is fastened and contacted, is assembled with a bundling optics designed as a reflector and a heat sink to form a common assembly. This assembly is then attached to an additional adjustable component of the light module, so that the light module by means of the adjustable component can be adjusted relative to other light modules or relative to the headlight housing. An additional adjustable component leads to increased material and assembly costs for the light module or the entire headlight. In addition, an additional adjustable component means that a further component with tolerance is present in the tolerance chain between the housing of the headlight and the optically active components of the light module. As a result, the accuracy with which the resulting light distribution of the light module or of the entire headlight can be adjusted suffers. The space required by the light module is also increased by the additional adjustable component.

Ausgehend von dem eingangs genannten Stand der Technik liegt der vorliegenden Erfindung die Aufgabe zugrunde, die Anzahl der zur Erzeugung einer resultierenden Lichtverteilung, insbesondere eines Abblendlichts, erforderlichen Bauteile eines Lichtmoduls mit mindestens einer Halbleiterlichtquelle zu reduzieren.On the basis of the prior art mentioned at the outset, the object of the present invention is to reduce the number of components of a light module with at least one semiconductor light source which are required to produce a resultant light distribution, in particular a low beam.

Diese Aufgabe wird mit den Merkmalen des Anspruchs 1 gelöst. Danach besteht das besteht das in eine dreidimensionale Form gebogene Blechteil seinerseits aus einem feststehenden Abschnitt, der in einem festen Bezug zu einem Gehäuse des Scheinwerfers steht, wenn das Lichtmodul in das Gehäuse des Scheinwerfers eingebaut ist, und einem relativ zu dem feststehenden Abschnitt beweglichen Abschnitt, wobei die Platine mit der mindestens einen Halbleiterlichtquelle und die Bündelungsoptik auf dem beweglichen Abschnitt des Blechteils befestigt sind und der bewegliche Abschnitt zur Justage des in das Gehäuse des Scheinwerfers eingebauten Lichtmoduls zusammen mit der mindestens einen Halbleiterlichtquelle und der Bündelungsoptik relativ zu dem feststehenden Abschnitt bewegbar und in einer justierten Lage relativ dazu festlegbar ist.This object is achieved with the features of claim 1. According to this, the sheet metal part bent into a three-dimensional shape in turn consists of a fixed section, which is in a fixed relationship to a housing of the headlamp when the light module is installed in the housing of the headlamp, and a section movable relative to the fixed section, wherein the circuit board with the at least one semiconductor light source and the focusing optics are attached to the movable section of the sheet metal part and the movable section for adjusting the light module installed in the housing of the headlamp together with the at least one semiconductor light source and the focusing optics relative to the fixed section is movable and can be fixed in an adjusted position relative to it.

Das Konzept sieht vor, die Lichtquelle(n) oder ein anderes optisch wirksames Bauteil (Bündelungs- oder Primäroptik, evtl. Sekundäroptik) des Lichtmoduls geringfügig zu bewegen, bspw. um einen kleinen Winkel zu schwenken, um eine Helldunkelgrenze der von dem Lichtmodul erzeugten Lichtverteilung in einem definierten Abstand zu dem Lichtmodul (z.B. auf der Fahrbahn vor dem mit dem Scheinwerfer ausgestatteten Kraftfahrzeug oder auf einem vor dem Kraftfahrzeug angeordneten Messschirm) zu justieren. Um bspw. eine Helldunkelgrenze in 50 m Entfernung von dem Lichtmodul um 10 cm zu bewegen, muss die Lichtquelle oder ein anderes optisch wirksames Bauteil des Lichtmoduls um etwa 0,1° geschwenkt werden. Bei so kleinen Winkeln kann näherungsweise von einer vertikalen Verstellung der Optikeinheit in Verbindung mit der Schwenkbewegung gesprochen werden.The concept provides for the light source (s) or another optically active component (bundling or primary optics, possibly secondary optics) of the light module to be moved slightly, for example by a small angle in order to pivot a light-dark boundary of the light distribution generated by the light module to be adjusted at a defined distance from the light module (for example on the road in front of the motor vehicle equipped with the headlight or on a measuring screen arranged in front of the motor vehicle). In order to move a light-dark boundary at a distance of 50 cm from the light module by 10 cm, for example, the light source or another optically active component of the light module must be pivoted by approximately 0.1 °. With such small angles, one can speak approximately of a vertical adjustment of the optical unit in connection with the pivoting movement.

Gemäß der vorliegenden Erfindung ist also ein Einstellsystem, das insbesondere zur Variation der Ausrichtung der optisch wirksamen Bauteile (Lichtquelle(n), Bündelungs- oder Primäroptik, evtl. Sekundäroptik) des Lichtmoduls in vertikaler Richtung vorgesehen ist, in den Kühlkörper des Lichtmoduls integriert. Das ist bei der Erfindung möglich, da der Kühlkörper als ein gebogenes Blechteil ausgebildet ist, das aufgrund der Materialeigenschaften des Blechs und bei geeigneter Ausgestaltung des Blechformteils verformbar ist. Je nach gewähltem Material des Blechteils kann dessen Verformung elastisch oder plastisch sein. Das Blechteil ist vorzugsweise als ein Aluminiumblech ausgebildet, da Aluminium besonders gute Wärmeleiteigenschaften aufweist. Ein Aluminiumblech ist plastisch verformbar. Alternativ könnte auch ein anderes Metall, bspw. Stahl, insbesondere ein elastisch verformbarer Federstahl, für den als Blechteil ausgebildeten Kühlkörper verwendet werden.According to the present invention, an adjustment system, which is provided in particular in order to vary the orientation of the optically active components (light source (s), bundling or primary optics, possibly secondary optics) of the light module in the vertical direction, is integrated in the heat sink of the light module. This is possible with the invention, since the heat sink is designed as a bent sheet metal part, which is deformable due to the material properties of the sheet metal and with a suitable design of the sheet metal molded part. Depending on the material selected for the sheet metal part, its deformation can be elastic or plastic. The sheet metal part is preferably designed as an aluminum sheet, since aluminum has particularly good thermal conductivity properties. An aluminum sheet is plastically deformable. Alternatively another metal, for example steel, in particular an elastically deformable spring steel, could also be used for the heat sink designed as a sheet metal part.

Durch das in den Kühlkörper integrierte Einstellsystem wird die Anzahl der erforderlichen Bauteile des Lichtmoduls reduziert. Zudem reduzieren sich das Gewicht und der erforderliche Bauraum des Lichtmoduls. Dem Kühlkörper wird eine weitere Funktion, nämlich das Einstellen oder die Justage des Lichtmoduls relativ zu einem anderen Lichtmodul des Scheinwerfers oder zu dem Scheinwerfergehäuse bzw. einem damit starr verbundenen anderen Bauteil, bspw. einem an dem Gehäuse des Scheinwerfers befestigten Trägerelement, zugeordnet. Das erfindungsgemäße Lichtmodul bzw. dessen Einstellsystem kann auf besonders einfache und kostengünstige Weise realisiert werden.The adjustment system integrated in the heat sink reduces the number of components required for the light module. In addition, the weight and the required installation space of the light module are reduced. Another function is assigned to the heat sink, namely the setting or adjustment of the light module relative to another light module of the headlight or to the headlight housing or to another component rigidly connected thereto, for example a support element fastened to the housing of the headlight. The light module according to the invention or its setting system can be implemented in a particularly simple and inexpensive manner.

Durch die Reduzierung der Anzahl der Bauteile in dem Lichtmodul kann eine Verringerung der Material- und Montagekosten erreicht werden. Dies ist insbesondere vor dem Hintergrund der im Kraftfahrzeugbau erzielten sehr großen Stückzahlen und des ständig stärker werdenden Kostendrucks seitens der Kraftfahrzeughersteller von erheblicher Bedeutung. Außerdem kann durch die Verringerung der Anzahl der Bauteile mindestens ein toleranzbehaftetes Glied in der Toleranzkette eliminiert werden, so dass die Genauigkeit der durch das erfindungsgemäße Lichtmodul erzeugten Lichtverteilung verbessert werden kann. Dies ist insbesondere bei Lichtmodulen von Bedeutung, die eine abgeblendete Lichtverteilung mit einer horizontalen Helldunkelgrenze (z.B. Grundlichtverteilung eines Abblendlichts, Spotlichtverteilung eines Abblendlichts oder eine Abblendlichtverteilung) erzeugen. Die Helldunkelgrenze kann dank der verbesserten Genauigkeit so weit nach oben verlagert werden, dass einerseits das Vorfeld des Kraftfahrzeugs möglichst weitreichend ausgeleuchtet wird und andererseits andere Verkehrsteilnehmer (die Insassen von vorausfahrenden oder entgegenkommenden Fahrzeugen) nicht geblendet werden.The material and assembly costs can be reduced by reducing the number of components in the light module. This is particularly important against the background of the very large quantities achieved in motor vehicle construction and the ever increasing cost pressure on the part of motor vehicle manufacturers. In addition, by reducing the number of components, at least one link in the tolerance chain that is subject to tolerance can be eliminated, so that the accuracy of the light distribution generated by the light module according to the invention can be improved. This is particularly important in the case of light modules which produce a dimmed light distribution with a horizontal light-dark boundary (for example basic light distribution of a low beam, spot light distribution of a low beam or a low beam distribution). Thanks to the improved accuracy, the chiaroscuro limit can be shifted so far up that on the one hand the apron of the Motor vehicle is illuminated as far as possible and on the other hand other road users (the occupants of vehicles driving ahead or oncoming vehicles) are not dazzled.

Alternativ oder zusätzlich kann die Justage des erfindungsgemäßen Lichtmoduls nicht nur in vertikaler Richtung, sondern auch in horizontaler Richtung erfolgen. Dies gilt z.B. für ein Lichtmodul zur Erzeugung eines Teilfernlichts oder eines Markierungslichts, die beide eine vertikale Helldunkelgrenze aufweisenAlternatively or additionally, the light module according to the invention can be adjusted not only in the vertical direction but also in the horizontal direction. This applies e.g. for a light module for generating a partial high beam or a marker light, both of which have a vertical light-dark limit

Der Kühlkörper besteht aus Blech, das in geeigneter Weise in eine bestimmte dreidimensionale Form gebogen ist. In geeigneter Weise bedeutet in diesem Zusammenhang, dass der Kühlkörper einerseits die von der mindestens einen Halbleiterlichtquelle während des Betriebs des Lichtmoduls abgegebene Wärme effizient abführen und an die Umgebung abgeben kann, damit eine Überhitzung der Lichtquelle(n), selbst bei einem langfristigen Betrieb des Lichtmoduls bei voller Leistung und selbst bei hohen Außentemperaturen wirksam und sicher verhindert werden kann. Zudem bedeutet in geeigneter Weise, dass sämtliche optisch wirksamen Bauteile, insbesondere die mindestens eine Halbleiterlichtquelle und die Bündelungsoptik, an dem Kühlkörper befestigt werden können. Zusätzlich zu diesen Funktionen hat der Kühlkörper des erfindungsgemäßen Lichtmoduls die Funktion, die Relativposition der optisch wirksamen Bauteile des Lichtmoduls relativ zu einem Gehäuse des Scheinwerfers, in das das Lichtmodul eingebaut ist, bzw. zu dem feststehenden Abschnitt des Kühlkörpers, der zumindest mittelbar an dem Gehäuse des Scheinwerfers befestigt ist, zu variieren und die optisch wirksamen Bauteile des Lichtmoduls in der justierten Lage (Position und/oder Orientierung) in dem Scheinwerfergehäuse festzulegen.The heat sink consists of sheet metal which is suitably bent into a certain three-dimensional shape. In this context, in a suitable manner means that the heat sink, on the one hand, can efficiently dissipate the heat emitted by the at least one semiconductor light source during operation of the light module and release it to the surroundings, thereby overheating the light source (s), even when the light module is in long-term operation can be effectively and safely prevented at full power and even at high outside temperatures. In addition, in a suitable manner means that all optically active components, in particular the at least one semiconductor light source and the bundling optics, can be attached to the heat sink. In addition to these functions, the heat sink of the light module according to the invention has the function of the relative position of the optically active components of the light module relative to a housing of the headlight in which the light module is installed, or to the fixed section of the heat sink, which is at least indirectly on the housing the headlight is attached to vary and the optically effective components of the light module in the adjusted position (position and / or orientation) in the headlight housing to be determined.

Durch eine besonders gestaltete Geometrie des den Kühlkörper bildenden gebogenen Blechteils kann ein Abschnitt des Blechteils beweglich bezüglich eines anderen feststehenden Abschnitts des Blechteils ausgebildet sein. An diesem beweglichen Abschnitt sind die optisch wirksamen Bauteile des Lichtmoduls befestigt, so dass sie zusammen mit dem beweglichen Abschnitt relativ zu dem feststehenden Abschnitt und damit relativ zu dem Gehäuse des Scheinwerfers, an dem der feststehende Abschnitt zumindest mittelbar befestigt ist, zum Zwecke der Justage des Lichtmoduls verstellt und in der justierten Lage festgelegt werden können.Due to a specially designed geometry of the bent sheet metal part forming the heat sink, a section of the sheet metal part can be designed to be movable with respect to another fixed section of the sheet metal part. The optically active components of the light module are fastened to this movable section, so that they, together with the movable section, relative to the fixed section and thus relative to the housing of the headlight, to which the fixed section is at least indirectly fastened, for the purpose of adjusting the Light module can be adjusted and set in the adjusted position.

Gemäß einer vorteilhaften Weiterbildung der Erfindung umfasst die Bündelungsoptik einen Reflektor, insbesondere einen Halbschalenreflektor. Der Reflektor dient dazu, gegebenenfalls im Zusammenwirken mit einer im Strahlengang des von der mindestens einen Halbleiterlichtquelle ausgesandten Lichts angeordneten Vorsatzoptik, das Licht der Halbleiterlichtquelle(n) zu bündeln und in eine Lichtaustrittsrichtung des Lichtmoduls umzulenken. Die Halbleiterlichtquelle(n) ist/sind derart relativ zu dem Reflektor angeordnet, dass deren Hauptabstrahlrichtung auf die Reflexionsfläche trifft. Der Reflektor ist vorzugsweise in einem Längsschnitt, der die Hauptabstrahlrichtung einer Halbleiterlichtquelle und die Lichtaustrittsrichtung des Lichtmoduls umfasst, parabelförmig ausgebildet. Insgesamt hat der Reflektor vorzugsweise die Form eines Paraboloids, so dass die reflektierten Lichtstrahlen in etwa parallel zu der Lichtaustrittsrichtung kollimiert werden.According to an advantageous development of the invention, the bundling optics comprises a reflector, in particular a half-shell reflector. The reflector is used to bundle the light of the semiconductor light source (s) and to redirect it into a light exit direction of the light module, optionally in cooperation with an optical lens arranged in the beam path of the light emitted by the at least one semiconductor light source. The semiconductor light source (s) is / are arranged relative to the reflector in such a way that their main emission direction strikes the reflection surface. The reflector is preferably parabolic in a longitudinal section, which includes the main emission direction of a semiconductor light source and the light exit direction of the light module. Overall, the reflector preferably has the shape of a paraboloid, so that the reflected light beams are collimated approximately parallel to the light exit direction.

Gemäß einer bevorzugten Ausführungsform umfasst die mindestens eine Halbleiterlichtquelle eine Leuchtdiode (LED) oder Laserdiode. Mehrere LEDs können matrixartig über- und/oder nebeneinander angeordnet sein, so dass sie ein LED-Array bilden. Die LEDs einer Halbleiterlichtquelle können einzeln, gruppenweise oder alle gemeinsam angesteuert werden.According to a preferred embodiment, the at least one semiconductor light source comprises a light-emitting diode (LED) or laser diode. Several LEDs can be arranged one above the other and / or next to one another in a matrix, so that they form an LED array. The LEDs of a semiconductor light source can be controlled individually, in groups or all together.

Gemäß einer anderen vorteilhaften Weiterbildung der Erfindung wird vorgeschlagen, dass der bewegliche Abschnitt des Blechteils um mindestens eine Verstellachse relativ zu dem feststehenden Abschnitt des Blechteils schwenkbar ist. Die Verstellachse kann durch Materialverjüngungen und/oder Schlitze in dem Material des Blechteils ausgebildet sein, die sich entlang der Verstellachse erstrecken. Zusätzlich können in den anderen Bereichen des Blechteils, insbesondere in dem feststehenden Abschnitt des Blechteils, stabilisierende Strukturen vorgesehen sein, so dass die Bewegung eines Teils des Kühlkörpers weitgehend auf den beweglichen Abschnitt beschränkt ist und der feststehende Abschnitt nach Möglichkeit nicht beweglich oder verformbar ist. Die Relativbewegung zwischen den beweglichen und feststehenden Abschnitten des Blechteils ist somit auf die Verstellachse beschränkt.According to another advantageous development of the invention, it is proposed that the movable section of the sheet metal part can be pivoted about at least one adjustment axis relative to the fixed section of the sheet metal part. The adjustment axis can be formed by material tapers and / or slots in the material of the sheet metal part, which extend along the adjustment axis. In addition, stabilizing structures can be provided in the other areas of the sheet metal part, in particular in the fixed section of the sheet metal part, so that the movement of a part of the heat sink is largely limited to the movable section and the fixed section is, if possible, not movable or deformable. The relative movement between the movable and fixed sections of the sheet metal part is thus limited to the adjustment axis.

Vorteilhafterweise verläuft die Verstellachse des beweglichen Abschnitts im Wesentlichen horizontal und senkrecht zu der Lichtaustrittsrichtung des Lichtmoduls. Die Verstellachse ist vorzugsweise in der vorderen Hälfte des Blechteils, insbesondere an der Vorderseite des Blechteils, angeordnet. Durch Bewegen des beweglichen Abschnitts um die Verstellachse können somit die optisch wirksamen Bauteile des Lichtmoduls relativ zu dem feststehenden Abschnitt des Kühlkörpers und damit auch relativ zu dem Gehäuse des Scheinwerfers, in das das Lichtmodul eingebaut ist und an dem der feststehende Abschnitt des Kühlkörpers zumindest mittelbar befestigt ist, verstellt werden, so dass eine horizontale Helldunkelgrenze der resultierenden Lichtverteilung in vertikaler Richtung verstellt werden kann. Mit der vorliegenden Erfindung ist jedoch auch eine Justage des Lichtmoduls bzw. einer von diesem erzeugten vertikalen Helldunkelgrenze der Lichtverteilung in horizontaler Richtung möglich. Dabei würde sich die Verstellachse dann vorzugsweise in vertikaler Richtung erstrecken.The adjustment axis of the movable section advantageously runs essentially horizontally and perpendicularly to the light exit direction of the light module. The adjustment axis is preferably arranged in the front half of the sheet metal part, in particular on the front side of the sheet metal part. By moving the movable section around the adjustment axis, the optically active components of the light module can thus be positioned relative to the fixed section of the heat sink and thus also relative to the housing of the headlamp into which the light module is installed and to which the fixed section of the heat sink is at least indirectly attached is adjusted so that a horizontal chiaroscuro limit of the resulting light distribution can be adjusted in the vertical direction. With the present invention, however, an adjustment of the light module or a vertical chiaroscuro limit of the light distribution generated by it is also possible in the horizontal direction. The adjustment axis would then preferably extend in the vertical direction.

Gemäß einer weiteren bevorzugten Ausführungsform der Erfindung wird vorgeschlagen, dass der bewegliche Abschnitt des Blechteils zumindest eine Oberseite umfasst, auf der die Platine mit der mindestens einen Halbleiterlichtquelle und die Bündelungsoptik befestigt sind. Vorteilhafterweise weist die Oberseite des beweglichen Abschnitts in einem in das Gehäuse des Scheinwerfers eingebauten und justierten Zustand des Lichtmoduls eine Hauptflächenerstreckung auf, die im Wesentlichen horizontal oder leicht schräg dazu verläuft. Vorzugsweise weist die Oberseite des beweglichen Abschnitts in einem in das Gehäuse des Scheinwerfers eingebauten und justierten Zustand des Lichtmoduls eine Hauptflächenerstreckung auf, die entgegen der Fahrtrichtung eines mit dem Scheinwerfer ausgestatteten Fahrzeugs und relativ zu einer Horizontalebene, die parallel zu der Lichtaustrittsrichtung des Lichtmoduls und damit auch parallel zu der Fahrtrichtung oder einer Fahrzeuglängsachse des Kraftfahrzeugs verläuft, leicht nach hinten geneigt verläuft. Die Hauptabstrahlrichtung der auf dem beweglichen Abschnitt des Blechteils montierten mindestens einen Halbleiterlichtquelle hat somit eine nach hinten, entgegen der Lichtaustrittsrichtung des Lichtmoduls bzw. der Fahrtrichtung des Kraftfahrzeugs gerichtete Komponente.According to a further preferred embodiment of the invention, it is proposed that the movable section of the sheet metal part comprises at least one upper side on which the circuit board with the at least one semiconductor light source and the bundling optics are fastened. When the light module is installed and adjusted in the housing of the headlamp, the upper side of the movable section advantageously has a main surface extension that is essentially horizontal or slightly oblique to it. When the light module is installed and adjusted in the housing of the headlight, the upper side of the movable section preferably has a main surface extension that is opposite to the direction of travel of a vehicle equipped with the headlight and relative to a horizontal plane that is parallel to the light exit direction of the light module and thus also runs parallel to the direction of travel or a vehicle longitudinal axis of the motor vehicle, runs slightly inclined to the rear. The main emission direction of the at least one semiconductor light source mounted on the movable section of the sheet metal part thus has a component directed towards the rear, counter to the light exit direction of the light module or the direction of travel of the motor vehicle.

Des Weiteren wird vorgeschlagen, dass der bewegliche Abschnitt des Blechteils Seitenflächen umfasst, die vorzugsweise jeweils eine Flächenerstreckung in einer Vertikalebene aufweisen, die eine Hauptflächenerstreckung senkrecht zu der Oberseite des beweglichen Abschnitts aufweisen. Somit wäre die Oberseite des Blechteils zusammen mit den Seitenflächen relativ zu dem restlichen feststehenden Abschnitt des Blechteils und relativ zu dem Scheinwerfergehäuse verstellbar. Die Seitenflächen leisten einen relativ großen Beitrag für die Kühlfunktion des Kühlkörpers. Deshalb sind die Seitenflächen vorzugsweise auch zu dem Trägerelement beabstandet, an dem der feststehende Abschnitt des Blechteils befestigt ist und das seinerseits an dem Scheinwerfergehäuse festgelegt ist. Die Seitenflächen können aber punktuell mit dem Trägerelement in Kontakt stehen, um eine thermisch bedingte Drehbewegung des beweglichen Abschnitts des Kühlkörpers um die z-Achse relativ zu dem feststehenden Trägerelement zu verringern, vorzugsweise ganz zu unterbinden.Furthermore, it is proposed that the movable section of the sheet metal part comprises side surfaces that preferably each have a surface extension in a vertical plane, which has a main surface extension perpendicular to the top of the movable section. Thus, the top of the sheet metal part together with the side surfaces would be adjustable relative to the remaining fixed section of the sheet metal part and relative to the headlight housing. The side surfaces make a relatively large contribution to the cooling function of the heat sink. Therefore, the side surfaces are preferably also spaced from the carrier element to which the fixed section of the sheet metal part is attached and which in turn is fixed to the headlight housing. The side surfaces can, however, be in point contact with the carrier element in order to reduce, preferably completely, prevent a thermally induced rotary movement of the movable section of the heat sink about the z-axis relative to the fixed carrier element.

Ferner wird vorgeschlagen, dass der feststehende Abschnitt des Blechteils zumindest einen Teil einer Vorderseite des Blechteils umfasst, der zumindest mittelbar an dem Gehäuse des Scheinwerfers festgelegt ist. Insbesondere wird vorgeschlagen, dass der feststehende Abschnitt des Blechteils mittels mindestens einer Befestigungsschraube zumindest mittelbar an dem Scheinwerfergehäuse befestigt ist. Besonders bevorzugt ist der feststehende Abschnitt des Blechteils mittelbar über ein Trägerelement, das in einem montierten Zustand des Scheinwerfers an dem Gehäuse des Scheinwerfers befestigt ist, an dem Gehäuse des Scheinwerfers festgelegt. Das Trägerelement ist vorzugsweise aus wärmeleitendem Kunststoff, also aus Kunststoffen, in die keramische, organische oder metallische Füllstoffe eingesetzt sind. Das Trägerelement dient zur Aufnahme von einem oder mehreren Lichtmodulen und wird dann als Einheit gemeinsam mit diesen in dem Gehäuse des Scheinwerfers angeordnet und darin befestigt. Das Trägerelement kann relativ zu dem Gehäuse als Ganzes horizontal und/oder vertikal verstellt werden.It is further proposed that the fixed section of the sheet metal part comprises at least part of a front side of the sheet metal part, which is fixed at least indirectly to the housing of the headlight. In particular, it is proposed that the fixed section of the sheet metal part is at least indirectly attached to the headlight housing by means of at least one fastening screw. The fixed section of the sheet metal part is particularly preferably fixed to the housing of the headlight indirectly via a carrier element which is fastened to the housing of the headlight in an assembled state of the headlight. The carrier element is preferably made of thermally conductive plastic, that is to say from plastics in which ceramic, organic or metallic fillers are inserted. The carrier element serves to accommodate one or more light modules and is then integrated as a unit with them in the housing of the headlight arranged and fixed therein. The carrier element can be adjusted horizontally and / or vertically relative to the housing as a whole.

Gemäß einer bevorzugten Ausführungsform ist der bewegliche Abschnitt des Blechteils mittels mindestens einer Verstellschraube relativ zu dem feststehenden Abschnitt des Blechteils bewegbar und in einer justierten Lage relativ dazu festlegbar. Vorteilhafterweise umfasst das Lichtmodul ein Federelement, das entgegen einer durch die Verstellschraube bewirkbaren Verstellrichtung zwischen dem bewegbaren Abschnitt des Blechteils und dem Gehäuse des Scheinwerfers bzw. mit einem damit fest verbunden Bauteil, bspw. einem an dem Gehäuse des Scheinwerfers befestigten Trägerelement, wirkt. Das Federelement kann je nach Anlenkung der Verstellschraube (an dem feststehenden oder an dem beweglichen Abschnitt des Blechteils) als Druckfeder oder als Zugfeder ausgebildet sein. Besonders bevorzugt ist das Federelement in der Form einer Spiralfeder ausgebildet, welche vorzugsweise die Verstellschraube umgibt.According to a preferred embodiment, the movable section of the sheet metal part can be moved relative to the fixed section of the sheet metal part by means of at least one adjusting screw and can be fixed in an adjusted position relative thereto. Advantageously, the light module comprises a spring element which acts counter to an adjustment direction which can be brought about by the adjusting screw between the movable section of the sheet metal part and the housing of the headlamp or with a component firmly connected thereto, for example a carrier element fastened to the housing of the headlamp. Depending on the articulation of the adjusting screw (on the fixed or on the movable section of the sheet metal part), the spring element can be designed as a compression spring or as a tension spring. The spring element is particularly preferably designed in the form of a spiral spring, which preferably surrounds the adjusting screw.

Die Verstellschraube bzw. deren Schaft hat vorzugsweise eine Längserstreckung in der Verstellrichtung der optisch wirksamen Bauteile des Lichtmoduls, insbesondere in die vertikale z-Richtung des Lichtmoduls. Gemäß einer besonders bevorzugten Ausführungsform der Erfindung ist die mindestens eine Verstellschraube durch eine (vorzugsweise gewindelose) Öffnung in dem beweglichen Abschnitt des Blechteils hindurchgeführt und in eine Gewindebohrung des feststehenden Abschnitts des Blechteils oder einem daran befestigten Bauteil (z.B. Trägerelement oder Scheinwerfergehäuse) eingeschraubt. Die Unterseite des Schraubenkopfes bildet dabei eine kreisringförmige Auflagefläche, die auf der Oberseite des beweglichen Abschnitts des Blechteils ruht. Je weiter die Schraube in die Gewindebohrung eingedreht wird, desto mehr zieht der Schraubenkopf der Verstellschraube den beweglichen Abschnitt des Blechteils entgegen der Federkraft eines als Druckfeder ausgebildeten Federelements in Richtung des feststehenden Abschnitts des Blechteils, so dass sich der Abstand zwischen beiden Abschnitten verringert. Dementsprechend bewegt sich der bewegliche Abschnitt des Blechteils getrieben von der Federkraft des Federelements wieder weg von dem feststehenden Abschnitt des Blechteils, so dass sich der Abstand vergrößert, sobald die Verstellschraube aus der Gewindebohrung herausgedreht wird und den Weg für die Vergrößerung des Abstands freigibt. Bei einem aus einem elastisch verformbaren Metall gefertigten Blechteil könnte auf eine gesonderte Druckfeder verzichtet und stattdessen die inhärente Federkraft des Metalls genutzt werden.The adjusting screw or its shaft preferably has a longitudinal extension in the direction of adjustment of the optically active components of the light module, in particular in the vertical z-direction of the light module. According to a particularly preferred embodiment of the invention, the at least one adjusting screw is passed through a (preferably unthreaded) opening in the movable section of the sheet metal part and screwed into a threaded bore in the fixed section of the sheet metal part or in a component fastened to it (for example a carrier element or headlight housing). The underside of the screw head forms an annular support surface which rests on the top of the movable section of the sheet metal part. The further the screw in the threaded hole is screwed in, the more the screw head of the adjusting screw pulls the movable section of the sheet metal part against the spring force of a spring element designed as a compression spring in the direction of the fixed section of the sheet metal part, so that the distance between the two sections is reduced. Accordingly, the movable section of the sheet metal part, driven by the spring force of the spring element, moves away again from the fixed section of the sheet metal part, so that the distance increases as soon as the adjusting screw is unscrewed from the threaded bore and opens the way for increasing the distance. In the case of a sheet metal part made from an elastically deformable metal, a separate compression spring could be dispensed with and instead the inherent spring force of the metal could be used.

Alternativ wird die Verstellschraube in eine Gewindeöffnung in dem beweglichen Abschnitt des Blechteils eingeschraubt, und es kann durch Verdrehen der Schraube eingestellt werden, wie weit der Schraubenschaft über die Unterseite des beweglichen Abschnitts des Blechteils hinausragt. Das distale, dem Schraubenkopf gegenüberliegende Ende der Schraube stützt sich dabei an dem Gehäuse des Scheinwerfers oder an einem damit fest verbundenem Teil, insbesondere an dem Trägerelement, das in einem montierten Zustand des Scheinwerfers an dem Gehäuse des Scheinwerfers befestigt ist, oder an dem feststehenden Abschnitt des Blechteils ab. Falls das Bauteil, an dem sich das distale Ende der Verstellschraube abstützt, aus Kunststoff besteht, ist es denkbar, zumindest den Abstützbereich, wo sich das distale Ende der Verstellschraube abstützt, auf dem Bauteil durch eine Metallplatte zu verstärken, um ein Einpressen des distalen Endes der Verstellschraube in das Material des Bauteils zu verhindern.Alternatively, the adjusting screw is screwed into a threaded opening in the movable section of the sheet metal part, and it can be adjusted by turning the screw how far the screw shaft extends beyond the underside of the movable section of the sheet metal part. The distal end of the screw opposite the screw head is supported on the housing of the headlamp or on a part firmly connected thereto, in particular on the carrier element which is fastened to the housing of the headlamp in an assembled state of the headlamp, or on the fixed section of the sheet metal part. If the component on which the distal end of the adjusting screw is supported is made of plastic, it is conceivable to reinforce at least the support area where the distal end of the adjusting screw is supported on the component by a metal plate in order to press in the distal end to prevent the adjustment screw in the material of the component.

Je weiter die Schraube in die Gewindebohrung eingedreht wird, desto weiter drückt die Verstellschraube den beweglichen Abschnitt des Blechteils entgegen der Federkraft eines als Zugfeder ausgebildeten Federelements weg von dem feststehenden Abschnitt, so dass sich der Abstand zwischen beiden Abschnitten vergrößert. Die Zugfeder ist sowohl an dem beweglichen Abschnitt des Blechteils als auch an dem feststehenden Abschnitt des Blechteils oder einem daran befestigten Bauteil (z.B. dem Trägerelement oder dem Scheinwerfergehäuse) festgelegt. Dementsprechend bewegt sich der bewegliche Abschnitt des Blechteils getrieben von der Federkraft des Federelements wieder in Richtung des feststehenden Abschnitts des Blechteils, so dass sich der Abstand verringert, sobald die Verstellschraube aus der Gewindebohrung herausgedreht wird und den Weg für die Vergrößerung des Abstands freigibt. Bei einem aus einem elastisch verformbaren Metall gefertigten Blechteil könnte auf eine gesonderte Zugfeder verzichtet und stattdessen die inhärente Federkraft des Metalls genutzt werden.The further the screw is screwed into the threaded bore, the further the adjusting screw pushes the movable section of the sheet metal part away from the fixed section against the spring force of a spring element designed as a tension spring, so that the distance between the two sections increases. The tension spring is fixed both on the movable section of the sheet metal part and on the fixed section of the sheet metal part or a component fastened to it (e.g. the support element or the headlight housing). Accordingly, the movable section of the sheet metal part moves again in the direction of the fixed section of the sheet metal part, driven by the spring force of the spring element, so that the distance is reduced as soon as the adjusting screw is unscrewed from the threaded bore and opens the way for increasing the distance. In the case of a sheet metal part made of an elastically deformable metal, a separate tension spring could be dispensed with and instead the inherent spring force of the metal could be used.

Durch Anziehen oder Lösen der Verstellschraube kann also der Abstand zwischen dem beweglichen Abschnitt und dem feststehenden Abschnitt des Blechteils so lange variiert werden bis sich die optischen Bauteile des Lichtmoduls, die an dem beweglichen Abschnitt befestigt sind, in einer justierten Lage (Position und/oder Orientierung) befinden. Die Schraube ist ausgebildet, ein selbsttätiges Lösen, bspw. aufgrund von Vibrationen im Kraftfahrzeug, zu verhindern, so dass die optischen Bauteile nach Erreichen der justierten Lage automatisch auch in dieser Lage festgelegt sind. Das Federelement hält den beweglichen Abschnitt und damit auch die optischen Bauteile in der justierten Lage und verhindert Vibrationen oder Zittern des beweglichen Abschnitts und der optischen Bauteile.By tightening or loosening the adjusting screw, the distance between the movable section and the fixed section of the sheet metal part can be varied until the optical components of the light module, which are attached to the movable section, are in an adjusted position (position and / or orientation ) are located. The screw is designed to prevent automatic loosening, for example due to vibrations in the motor vehicle, so that the optical components are automatically fixed in this position after reaching the adjusted position. The spring element holds the movable section and thus also the optical components in the adjusted position and prevents vibrations or tremors movable section and the optical components.

Die Erfindung betrifft außerdem einenThe invention also relates to a

Kraftfahrzeugscheinwerfer, der ein Gehäuse und mindestens ein darin angeordnetes erfindungsgemäßes Lichtmodul umfasst. Vorzugsweise weist der Scheinwerfer mehrere nebeneinander angeordnete und an einem gemeinsamen Trägerelement, das in einem montierten Zustand des Scheinwerfers an einem Gehäuse des Scheinwerfers befestigt ist, befestigte Lichtmodule auf, die jeweils einzeln relativ zueinander und bezüglich des Trägerelements justierbar sind und die gemeinsam durch Verstellen des Trägerelements bezüglich des Gehäuses des Scheinwerfers verstellbar sind. Dabei wäre es bspw. denkbar, dass ein Lichtmodul zur Erzeugung eines Spotlichts einer Abblendlichtverteilung, ein anderes Lichtmodul zur Erzeugung eines Grundlichts der Abblendlichtverteilung und ein drittes Lichtmodul zur Erzeugung einer Fernlichtverteilung vorgesehen ist, indem es bspw. nur einen Bereich oberhalb der horizontalen Helldunkelgrenze der Abblendlichtverteilung ausleuchtet.Motor vehicle headlight, which comprises a housing and at least one light module according to the invention arranged therein. The headlamp preferably has a plurality of light modules arranged next to one another and fastened to a common carrier element, which is fastened to a housing of the headlamp in an assembled state of the headlamp, which are each individually adjustable relative to one another and with respect to the carrier element, and which can be adjusted jointly by adjusting the carrier element are adjustable with respect to the housing of the headlamp. It would be conceivable, for example, that a light module for generating a spot light of a low beam distribution, another light module for generating a basic light of the low beam distribution and a third light module for generating a high beam distribution is provided by, for example, only one area above the horizontal chiaroscuro limit of the low beam distribution illuminates.

Weitere Merkmale und Vorteile der vorliegenden Erfindung werden nachfolgend anhand der Figuren näher erläutert. Dabei können die in den Figuren gezeigten Merkmale auch alleine oder in einer anderen als der dargestellten Kombination erfindungsrelevant sein. Die Figuren zeigen:

Figur 1
eine erste perspektivische Ansicht eines erfindungsgemäßen Lichtmoduls in einer bevorzugten Ausführungsform;
Figur 2
eine weitere perspektivische Ansicht des Lichtmoduls aus Figur 1;
Figur 3
eine perspektivische Ansicht eines Kühlkörpers des Lichtmoduls aus Figur 1 oder 2;
Figur 4
eine Draufsicht auf den Kühlkörper aus Figur 3;
Figur 5
eine Schnittansicht durch das Lichtmodul aus Figur 1 oder 2;
Figur 6
einen erfindungsgemäßen Kraftfahrzeugscheinwerfer in einer bevorzugten Ausführungsform; und
Figur 7
eine Innenansicht eines erfindungsgemäßen Kraftfahrzeugscheinwerfers mit drei Lichtmodulen nach einer der Figuren 1, 2 oder 5.
Further features and advantages of the present invention are explained in more detail below with reference to the figures. The features shown in the figures can also be relevant to the invention alone or in a combination other than that shown. The figures show:
Figure 1
a first perspective view of a light module according to the invention in a preferred embodiment;
Figure 2
a further perspective view of the light module Figure 1 ;
Figure 3
a perspective view of a heat sink of the light module from Figure 1 or 2nd ;
Figure 4
a top view of the heat sink Figure 3 ;
Figure 5
a sectional view through the light module Figure 1 or 2nd ;
Figure 6
a motor vehicle headlight according to the invention in a preferred embodiment; and
Figure 7
an interior view of a motor vehicle headlight according to the invention with three light modules according to one of the Figures 1 , 2nd or 5 .

In Figur 6 ist ein erfindungsgemäßer Scheinwerfer eines Kraftfahrzeugs in seiner Gesamtheit mit dem Bezugszeichen 1 bezeichnet. Der Scheinwerfer 1 wird in einer entsprechenden Einbauöffnung im Frontbereich der Karosserie eines Kraftfahrzeugs angeordnet und befestigt.In Figure 6 A headlight of a motor vehicle according to the invention is designated in its entirety with reference number 1. The headlight 1 is arranged and fastened in a corresponding installation opening in the front area of the body of a motor vehicle.

Im Einzelnen weist der Scheinwerfer 1 ein Gehäuse 2 auf, das vorzugsweise aus Kunststoff gefertigt ist. In einer Lichtaustrittsrichtung 3 hat das Gehäuse 2 eine Lichtaustrittsöffnung 4, die mittels einer transparenten Abdeckscheibe 5 verschlossen ist. Die Abdeckscheibe 5 besteht aus Glas oder Kunststoff. Auf der Abdeckscheibe 5 können zumindest bereichsweise optisch wirksame Elemente (z. B. Prismen oder Zylinderlinsen) angeordnet sein, um das hindurchtretende Licht zu streuen (sogenannte Streuscheibe). Es ist aber auch denkbar, dass die Abdeckscheibe 5 ohne solche optisch wirksamen Elemente ausgebildet ist (sogenannte klare Scheibe).In detail, the headlight 1 has a housing 2, which is preferably made of plastic. In a light exit direction 3, the housing 2 has a light exit opening 4, which is closed by means of a transparent cover plate 5. The cover plate 5 is made of glass or plastic. At least in certain areas, optically active elements (for example prisms or cylindrical lenses) can be arranged on the cover plate 5 in order to scatter the light passing through (so-called diffusing plate). However, it is also conceivable that the cover plate 5 is designed without such optically active elements (so-called clear plate).

Im Inneren des Gehäuses 2 ist ein erfindungsgemäßes Lichtmodul 6 angeordnet. Das Lichtmodul 6 kann zur Erzeugung einer beliebigen Scheinwerferfunktion oder eines Teils davon dienen. Insbesondere kann das Lichtmodul 6 zur Erzeugung einer Abblendlichtverteilung, einer Fernlichtverteilung, einer Nebellichtverteilung oder einer beliebigen adaptiven Lichtverteilung oder eines Teils davon dienen. Alternativ oder zusätzlich wäre es ferner denkbar, dass das Lichtmodul 6 zur Erzeugung einer Leuchtenfunktion ausgebildet ist, bspw. eines Tagfahrlichts, eines Begrenzungslichts und/oder eines Blinklichts oder eines Teils davon. In dem Gehäuse 2 kann mindestens ein weiteres Lichtmodul 7 angeordnet sein, das ebenfalls als ein erfindungsgemäßes Lichtmodul ausgebildet sein kann. Das weitere Lichtmodul 7 dient bspw. zur Erzeugung einer weiteren Scheinwerfer- und/oder Leuchtenfunktion oder eines Teils davon.Inside the housing 2 is an inventive Light module 6 arranged. The light module 6 can be used to generate any headlight function or a part thereof. In particular, the light module 6 can be used to generate a low beam distribution, a high beam distribution, a fog light distribution or any adaptive light distribution or a part thereof. Alternatively or additionally, it would also be conceivable for the light module 6 to be designed to generate a light function, for example a daytime running light, a side light and / or a flashing light or a part thereof. At least one further light module 7 can be arranged in the housing 2, which can also be designed as a light module according to the invention. The further light module 7 is used, for example, to generate a further headlight and / or lamp function or a part thereof.

Es wäre aber auch denkbar, dass die Lichtmodule 6, 7 zusammen eine vorgesehene Scheinwerfer- oder Leuchtenfunktion des Scheinwerfers 1 erzeugen. So könnte beispielsweise das Lichtmodul 7 eine Abblendlicht-Grundlichtverteilung mit einer relativ breiten Streuung und einer strikt horizontalen Helldunkelgrenze erzeugen. Das Lichtmodul 6 könnte dann eine Abblendlicht-Spotlichtverteilung erzeugen, die im Vergleich zu der Abblendlicht-Grundlichtverteilung des Lichtmoduls 7 relativ stark konzentriert ist und an der Oberseite eine asymmetrische Helldunkelgrenze aufweist. Die asymmetrische Helldunkelgrenze weist auf der eigenen Verkehrsseite einen höheren Verlauf auf als auf der Gegenverkehrsseite. Eine Überlagerung der Grundlichtverteilung und der Spotlichtverteilung ergibt eine herkömmliche Abblendlichtverteilung. Damit die Qualität des Abblendlichts möglichst gut ist, sollten die horizontale Helldunkelgrenze des Grundlichts und die asymmetrische Helldunkelgrenze des Spotlichts zueinander justierst sein, insbesondere in vertikaler Richtung, so dass sie beide auf der gleichen Höhe verlaufen. Die vorliegende Erfindung schlägt ein Lichtmodul 6 vor, bei dem eine Justage des Lichtmoduls 6 bzw. der Helldunkelgrenze einer abgeblendeten Lichtverteilung des Lichtmoduls 6, insbesondere in vertikaler Richtung, auf einfache und kostengünstige Weise realisiert werden kann. Das erfindungsgemäße Lichtmodul 6 wird nachfolgend unter Bezugnahme auf die Figuren 1 bis 5 näher erläutert.However, it would also be conceivable that the light modules 6, 7 together produce an intended headlight or luminaire function of the headlight 1. For example, the light module 7 could generate a low-beam basic light distribution with a relatively wide scatter and a strictly horizontal chiaroscuro limit. The light module 6 could then produce a low beam spot light distribution which is relatively strongly concentrated in comparison to the low beam basic light distribution of the light module 7 and has an asymmetrical light-dark boundary on the upper side. The asymmetrical chiaroscuro limit has a higher profile on its own traffic side than on the oncoming traffic side. A superimposition of the basic light distribution and the spot light distribution results in a conventional low beam distribution. So that the quality of the low beam is as good as possible, the horizontal The light-dark boundary of the basic light and the asymmetrical light-dark boundary of the spot light must be adjusted to one another, in particular in the vertical direction, so that they both run at the same height. The present invention proposes a light module 6 in which an adjustment of the light module 6 or the chiaroscuro limit of a dimmed light distribution of the light module 6, in particular in the vertical direction, can be implemented in a simple and inexpensive manner. The light module 6 according to the invention is described below with reference to FIG Figures 1 to 5 explained in more detail.

Selbstverständlich ist es denkbar, dass in dem Scheinwerfergehäuse 2 außer den Lichtmodulen 6, 7 noch weitere Lichtmodule angeordnet sind, die hier jedoch nicht gezeigt sind. Außerdem kann in dem Scheinwerfergehäuse 2 lediglich ein Lichtmodul, beispielsweise das Lichtmodul 6 ohne das Lichtmodul 7, angeordnet sein. Schließlich kann in dem Gehäuse 2 auch mindestens eine Kraftfahrzeugleuchte angeordnet sein, wie das beispielhaft eingezeichnete Leuchtenmodul 8. Das Leuchtenmodul 8 dient zur Erzeugung von mindestens einer Leuchtenfunktion, beispielsweise eines Blinklichts, eines Positionslichts, eines Tagfahrlichts, etc.Of course, it is conceivable that in addition to the light modules 6, 7, further light modules are arranged in the headlight housing 2, but these are not shown here. In addition, only one light module, for example the light module 6 without the light module 7, can be arranged in the headlight housing 2. Finally, at least one motor vehicle light can also be arranged in the housing 2, such as the light module 8 shown by way of example. The light module 8 is used to generate at least one light function, for example a flashing light, a position light, a daytime running light, etc.

Das erfindungsgemäße Lichtmodul 6 ist in den Figuren 1, 2 und 5 im Detail gezeigt. Das in Figur 1 eingezeichnete Koordinatensystem gilt auch für die übrigen Figuren 2 bis 5. Das Lichtmodul 6 umfasst mindestens eine auf einer Platine 10 befestigte und elektrisch kontaktierte Halbleiterlichtquelle 11. Die Halbleiterlichtquelle 11 umfasst vorzugsweise mindestens eine Leuchtdiode (LED) oder Laserdiode. Die LEDs können matrixartig über- und nebeneinander zu einem LED-Array angeordnet sein. Die Halbleiterlichtquelle 11 sendet Licht in einer vertikal nach oben gerichteten Hauptabstrahlrichtung 12 aus. Das Lichtmodul 6 umfasst ferner eine Bündelungsoptik 13, die in dem hier gezeigten Beispiel als ein Reflektor, insbesondere als ein sog. Halbschalenreflektor, ausgebildet ist. Der Reflektor weist eine der Halbleiterlichtquelle 11 zugewandte verspiegelte Reflexionsfläche auf, welche derart geformt ist, dass sie das von der Lichtquelle 11 in der Hauptabstrahlrichtung 12 in etwa in einen 180°-Halbraum ausgesandte Licht bündelt und in die Lichtaustrittsrichtung 3 umlenkt. Insbesondere wird vorgeschlagen, dass der Reflektor bzw. dessen Reflexionsfläche die Form eines Paraboloids oder eine auf einem Paraboloid basierende Freiformfläche aufweist, so dass die reflektierten Lichtstrahlen in etwa parallel zu der Lichtaustrittsrichtung 3 kollimiert werden. Der Reflektor kann zudem eine Strahlenblende (nicht dargestellt) aufweisen, die Streulicht vermeiden soll. Diese Strahlenblende kann bspw. vor der Öffnung 13b angebracht sein. Die Bündelungsoptik 13 weist eine Grundplatte 13a auf, die mit einer Öffnung 13b versehen ist, durch die das von den Lichtquellen 11 ausgesandte Licht hindurchtreten kann.The light module 6 according to the invention is in the Figures 1 , 2nd and 5 shown in detail. This in Figure 1 The coordinate system shown also applies to the rest Figures 2 to 5 . The light module 6 comprises at least one semiconductor light source 11 which is fixed and electrically contacted on a circuit board 10. The semiconductor light source 11 preferably comprises at least one light-emitting diode (LED) or laser diode. The LEDs can be arranged in a matrix above and next to one another to form an LED array. The Semiconductor light source 11 emits light in a vertically upward main emission direction 12. The light module 6 further comprises a bundling optics 13, which in the example shown here is designed as a reflector, in particular as a so-called half-shell reflector. The reflector has a mirrored reflection surface facing the semiconductor light source 11, which is shaped in such a way that it bundles the light emitted by the light source 11 in the main emission direction 12 approximately into a 180 ° half-space and deflects it in the light exit direction 3. In particular, it is proposed that the reflector or its reflection surface have the shape of a paraboloid or a free-form surface based on a paraboloid, so that the reflected light beams are collimated approximately parallel to the light exit direction 3. The reflector can also have a radiation diaphragm (not shown), which is to avoid stray light. This radiation diaphragm can be attached, for example, in front of the opening 13b. The bundling optics 13 has a base plate 13a which is provided with an opening 13b through which the light emitted by the light sources 11 can pass.

Ferner kann die Bündelungsoptik 13 bspw. an der Unterseite der Grundplatte 13a Positionierungselemente, bspw. in Form von Positionierungsstiften, aufweisen, die in entsprechende Öffnungen an der Oberseite eines Kühlkörpers 14 eingreifen (vgl. Figuren 3 und 4), um auf einfache und zuverlässige Weise eine hochgenaue Positionierung der Bündelungsoptik 13 relativ zu der mindestens einen Halbleiterlichtquelle 11 zu ermöglichen. Die Bündelungsoptik 13 ist vorzugsweise aus einem Thermoplast gefertigt, um auch komplexere Geometrien, bspw. für die Positionierungsstifte und/oder eine Strahlenblende, mit höherer Genauigkeit realisieren zu können.Furthermore, the bundling optics 13, for example on the underside of the base plate 13a, can have positioning elements, for example in the form of positioning pins, which engage in corresponding openings on the top of a heat sink 14 (cf. Figures 3 and 4 ) to enable a highly precise positioning of the bundling optics 13 relative to the at least one semiconductor light source 11 in a simple and reliable manner. The bundling optics 13 is preferably made of a thermoplastic in order to also include more complex geometries, for example for the positioning pins and / or one Radiation aperture to be able to realize with higher accuracy.

Das Lichtmodul 6 umfasst ferner den Kühlkörper 14, dessen Primäraufgabe es ist, die während des Betriebs des Lichtmoduls 6 von den Lichtquellen 11 abgegebene Wärme aufzunehmen, abzuleiten und an die Umgebung abzugeben, um eine Überhitzung der Lichtquellen 11 zu verhindern. Auf dem Kühlkörper 14, insbesondere auf einer Oberseite 15 des Kühlkörpers 14, sind die Platine 10 mit den darauf befestigten und kontaktierten Halbleiterlichtquellen 11 sowie die Bündelungsoptik 13 befestigt. Zur Befestigung der Platine 10 mit den Lichtquellen 11 und der Bündelungsoptik 13 auf dem Kühlkörper 14 ist eine Befestigungsschraube 16 vorgesehen, die durch eine erste Öffnung in der Grundplatte 13a der Bündelungsoptik 13 und eine zweite Öffnung in der Platine 10 hindurchgeführt und in eine Gewindeöffnung in einer Oberseite 15 des Kühlkörpers 14 geschraubt ist. Durch Festziehen der Schraube 16 sind die Grundplatte 13a der Bündelungsoptik 13 und die Platine 10 zwischen der Unterseite des Schraubenkopfes der Befestigungsschraube 16 und der Oberseite 15 des Kühlkörpers 14 fest eingespannt.The light module 6 further comprises the heat sink 14, the primary task of which is to absorb the heat emitted by the light sources 11 during operation of the light module 11, to dissipate it and to dissipate it to the surroundings in order to prevent the light sources 11 from overheating. On the heat sink 14, in particular on an upper side 15 of the heat sink 14, the circuit board 10 with the semiconductor light sources 11 fastened and contacted thereon and the bundling optics 13 are fastened. To fasten the circuit board 10 with the light sources 11 and the bundling optics 13 on the heat sink 14, a fastening screw 16 is provided which passes through a first opening in the base plate 13a of the bundling optics 13 and a second opening in the board 10 and into a threaded opening in a Top 15 of the heat sink 14 is screwed. By tightening the screw 16, the base plate 13a of the bundling optics 13 and the circuit board 10 are firmly clamped between the underside of the screw head of the fastening screw 16 and the upper side 15 of the heat sink 14.

Alternativ oder zusätzlich können zur Befestigung der Platine 10 mit den Lichtquellen 11 und der Bündelungsoptik 13 auf dem Kühlkörper 14 auch Klammern oder Clips 17 vorgesehen sein, welche die Grundplatte 13a der Bündelungsoptik 13 nach unten gegen die Oberseite 15 des Kühlkörpers 14 drücken und die Platine 13 dazwischen einspannen. Mit anderen Worten, die Grundplatte 13a der Bündelungsoptik 13 und die Platine 10 sind zwischen einem oberen Bügel der Klammern oder Clips 17 und der Oberseite 15 des Kühlkörpers 14 fest eingespannt.As an alternative or in addition, clips or clips 17 can also be provided for fastening the circuit board 10 with the light sources 11 and the bundling optics 13 on the heat sink 14, said clips pressing the base plate 13a of the bundling optics 13 downward against the upper side 15 of the heat sink 14 and the circuit board 13 clamp in between. In other words, the base plate 13a of the bundling optics 13 and the circuit board 10 are firmly clamped between an upper bracket of the clips or clips 17 and the upper side 15 of the heat sink 14.

Das Lichtmodul 6 ist vorzugsweise zur Erzeugung einer abgeblendeten (Teil-) Lichtverteilung mit einer im Wesentlichen horizontalen Helldunkelgrenze, bspw. eines Abblendlichts oder eines Nebellichts, oder eines Teils davon ausgebildet, bspw. eines Grundlichts oder eines Spotlichts einer Abblendlichtverteilung. Das Lichtmodul 6 kann aber auch zur Erzeugung eines Fernlichts, insbesondere zur Ausleuchtung eines Bereichs einer Fernlichtverteilung oberhalb der horizontalen Helldunkelgrenze einer abgeblendeten Lichtverteilung ausgebildet sein. Das Lichtmodul 6 ist als Einheit handhabbar und zum Einbau in das Innere eines Scheinwerfergehäuses 2 vorgesehen. Dabei ist es für die Qualität der von dem Scheinwerfer 1 erzeugten Lichtverteilung wichtig, dass das eingebaute Lichtmodul 6 oder die eingebauten Lichtmodule 6, 7 relativ zueinander und relativ zu dem Gehäuse 2 des Scheinwerfers 1 oder zu einem damit starr verbundenen Bauteil des Scheinwerfers 1 justiert sind. Das erfindungsgemäße Lichtmodul 6 hat einen Kühlkörper 14, in den ein Einstellsystem zur Justage des Lichtmoduls integriert ist.The light module 6 is preferably designed to produce a dimmed (partial) light distribution with an essentially horizontal light-dark boundary, for example a low beam or a fog light, or a part thereof, for example a basic light or a spot light of a low beam distribution. However, the light module 6 can also be designed to generate a high beam, in particular to illuminate a region of a high beam distribution above the horizontal chiaroscuro limit of a dimmed light distribution. The light module 6 can be handled as a unit and is intended for installation in the interior of a headlight housing 2. It is important for the quality of the light distribution generated by the headlamp 1 that the built-in light module 6 or the built-in light modules 6, 7 are adjusted relative to one another and relative to the housing 2 of the headlamp 1 or to a component of the headlamp 1 rigidly connected thereto . The light module 6 according to the invention has a heat sink 14, in which an adjustment system for adjusting the light module is integrated.

Das Konzept sieht vor, die Lichtquelle(n) 11 oder ein anderes optisch wirksames Bauteil (Bündelungs- oder Primäroptik 13, evtl. Sekundäroptik zur Projektion der Lichtverteilung auf die Fahrbahn vor das Kraftfahrzeug) des Lichtmoduls 6 geringfügig zu bewegen, bspw. um einen kleinen Winkel zu schwenken, um die Helldunkelgrenze der von dem Lichtmodul 6 erzeugten Lichtverteilung in einem definierten Abstand zu dem Lichtmodul 6 zu justieren. Um bspw. eine Helldunkelgrenze in 50 m Entfernung von dem Lichtmodul 6 um 10 cm zu bewegen, muss die Lichtquelle 11 oder ein anderes optisch wirksames Bauteil des Lichtmoduls 6 um etwa 0,1° geschwenkt werden. Bei so kleinen Winkeln kann näherungsweise von einer vertikalen Verstellung der Optikeinheit in Verbindung mit der Schwenkbewegung gesprochen werden.The concept provides for the light module (s) 11 or another optically active component (bundling or primary optics 13, possibly secondary optics for projecting the light distribution onto the road ahead of the motor vehicle) of the light module 6 to be moved slightly, for example by a small one To pivot the angle in order to adjust the chiaroscuro limit of the light distribution generated by the light module 6 at a defined distance from the light module 6. In order to move a light-dark boundary at 50 m from the light module 6 by 10 cm, for example, the light source 11 or another optically active component of the light module 6 must be pivoted by approximately 0.1 °. With such small angles, the vertical adjustment can be approximated Optical unit can be spoken in connection with the pivoting movement.

Der Kühlkörper 14 umfasst ein um mindestens eine Biegeachse 18 in eine dreidimensionale Form gebogenes Blechteil, das seinerseits einen feststehenden Abschnitt 19, der in einem festen Bezug zu einem Gehäuse 2 des Scheinwerfers 1 steht, wenn das Lichtmodul 6 in das Gehäuse 2 des Scheinwerfers 1 eingebaut ist, und einem relativ zu dem feststehenden Abschnitt 19 beweglichen Abschnitt 20 umfasst. Der feststehende Abschnitt 19 des als Blechteil ausgebildeten Kühlkörpers 14 umfasst vorzugsweise zumindest einen Teil einer Vorderseite (in Lichtaustrittsrichtung 3 gerichtet) des Kühlkörpers 14, der an dem Gehäuse 2 des Scheinwerfers 1 zumindest mittelbar befestigt ist. Wie man anhand der Figur 5 erkennen kann, wird der feststehende Abschnitt 19 mittelbar über ein Trägerelement 21, das an dem Gehäuse 2 des Scheinwerfers 1 befestigt ist, an dem Gehäuse 2 befestigt. Das Trägerelement 21 kann aus Metall oder Kunststoff bestehen. Besonders bevorzugt besteht es aus einem wärmeleitenden Kunststoff. Insbesondere ist der feststehende Abschnitt 19 des als Blechteil ausgebildeten Kühlkörpers 14 mittels zweier Befestigungsschrauben 22 an dem Trägerelement 21 befestigt. Auch eine Befestigung mittels einer oder mehr als zwei Befestigungsschrauben 22 oder auf andere Weise ist denkbar. Zur Positionierung und Lagesicherung des feststehenden Abschnitts 19 relativ zu dem Trägerelement 21 sind zudem Positionierungsstifte 21a (vgl. Figur 5) vorgesehen, die in entsprechende Positionierungsöffnungen 19a (vgl. Figur 3) eingreifen können. In dem gezeigten Beispiel sind die Positionierungsstifte 21a in dem Trägerelement 21 ausgebildet und die Positionierungsöffnungen 19a in dem feststehenden Abschnitt 19 des als Blechteil ausgebildeten Kühlkörpers 14. Selbstverständlich ist es auch denkbar, dass die Positionierungsöffnungen in dem Trägerelement 21 und die Positionierungsstifte in dem feststehenden Abschnitt 19 des als Blechteil ausgebildeten Kühlkörpers 14 ausgebildet sind. Ferner kann der feststehende Abschnitt 19 auch auf eine beliebig andere Weise als mit den Befestigungsschrauben 22 und als über das Trägerelement 21 an dem Gehäuse 2 des Scheinwerfers 1 befestigt sein.The heat sink 14 comprises a sheet metal part bent into at least one bending axis 18 into a three-dimensional shape, which in turn has a fixed section 19 which is in a fixed relationship to a housing 2 of the headlight 1 when the light module 6 is installed in the housing 2 of the headlight 1 and includes a portion 20 movable relative to the fixed portion 19. The fixed section 19 of the heat sink 14 designed as a sheet metal part preferably comprises at least part of a front side (directed in the direction of light exit 3) of the heat sink 14, which is at least indirectly attached to the housing 2 of the headlight 1. How to use the Figure 5 can be seen, the fixed portion 19 is indirectly attached to the housing 2 via a carrier element 21 which is fastened to the housing 2 of the headlight 1. The carrier element 21 can consist of metal or plastic. It particularly preferably consists of a thermally conductive plastic. In particular, the fixed section 19 of the heat sink 14 designed as a sheet metal part is fastened to the carrier element 21 by means of two fastening screws 22. Fastening by means of one or more than two fastening screws 22 or in another way is also conceivable. To position and secure the fixed section 19 relative to the carrier element 21 there are also positioning pins 21a (cf. Figure 5 ) is provided, which in corresponding positioning openings 19a (cf. Figure 3 ) can intervene. In the example shown, the positioning pins 21a are formed in the carrier element 21 and the positioning openings 19a in the fixed section 19 of the heat sink 14 formed as a sheet metal part. Of course, it is also conceivable that the positioning openings in the carrier element 21 and the positioning pins are formed in the fixed section 19 of the heat sink 14 designed as a sheet metal part. Furthermore, the fixed section 19 can also be fastened in any other way than with the fastening screws 22 and as via the carrier element 21 to the housing 2 of the headlight 1.

Der bewegliche Abschnitt 20 des als Blechteil ausgebildeten Kühlkörpers 14 umfasst zumindest eine Oberseite 15 . Die Oberseite 15 weist in einem in das Gehäuse 2 des Scheinwerfers 1 eingebauten und justierten Zustand des Lichtmoduls 6 eine Hauptflächenerstreckung auf, die nahezu horizontal, genauer gesagt leicht schräg dazu verläuft (vgl. Figur 5). Insbesondere weist die Oberseite 15 in einem in das Gehäuse 2 des Scheinwerfers 1 eingebauten und justierten Zustand des Lichtmoduls 6 eine Hauptflächenerstreckung auf, die relativ zu einer Horizontalebene um etwa 10° leicht nach hinten (in -x-Richtung), also entgegen der Fahrtrichtung des Kraftfahrzeugs bzw. entgegen der Lichtaustrittsrichtung 3 des Scheinwerfers 1 geneigt verläuft. Der als Blechteil ausgebildete Kühlkörper 14 weist an seinem hinteren Ende (entgegen der Lichtaustrittsrichtung 3) eine geringere Höhe auf als an seinem vorderen Ende (in Lichtaustrittsrichtung 3) .The movable section 20 of the heat sink 14 formed as a sheet metal part comprises at least one upper side 15. When the light module 6 is installed and adjusted in the housing 2 of the headlight 1, the upper side 15 has a main surface extension which is almost horizontal, more precisely slightly oblique to it (cf. Figure 5 ). In particular, the upper side 15, when the light module 6 is installed and adjusted in the housing 2 of the headlight 1, has a main surface extension which is slightly backward in a horizontal plane by approximately 10 ° (in the -x direction), i.e. counter to the direction of travel of the Motor vehicle or inclined against the light exit direction 3 of the headlamp 1. The heat sink 14 designed as a sheet metal part has a lower height at its rear end (counter to the light exit direction 3) than at its front end (in the light exit direction 3).

In dem gezeigten Beispiel umfasst der bewegliche Abschnitt 20 auch Seitenflächen 23. Die Seitenflächen 23 sind an seitlichen Biegekanten 18 von der Oberseite 15 nach unten gebogen. In dem Beispiel ist der bewegliche Abschnitt 20 des als Blechteil ausgebildeten Kühlkörpers 14 somit deutlich größer als der feststehende Abschnitt 19. Die Seitenflächen 23 leisten einen großen Beitrag für die Kühlfunktion des Kühlkörpers 14. Deshalb sind die Seitenflächen 23 vorzugsweise auch zu dem Trägerelement 21 beabstandet. Die Seitenflächen 23 können aber auch punktuell mit dem Trägerelement 21 in Kontakt stehen, um eine thermisch bedingte Drehbewegung oder Verwindung des beweglichen Abschnitts 20 des Kühlkörpers 14 um die z-Achse relativ zu dem feststehenden Trägerelement 21 zu verringern, vorzugsweise ganz zu unterbinden.In the example shown, the movable section 20 also includes side surfaces 23. The side surfaces 23 are bent downwards at the side bending edges 18 from the top side 15. In the example, the movable section 20 of the heat sink 14 designed as a sheet metal part is thus significantly larger than the fixed section 19. The side surfaces 23 make a large contribution to the Cooling function of the heat sink 14. Therefore, the side surfaces 23 are preferably also spaced apart from the carrier element 21. However, the side surfaces 23 can also be in point contact with the carrier element 21 in order to reduce, preferably completely, prevent a thermally induced rotational movement or twisting of the movable section 20 of the heat sink 14 about the z-axis relative to the fixed carrier element 21.

Die Platine 10 mit der mindestens einen Halbleiterlichtquelle 11 und die Bündelungsoptik 13 sind auf dem beweglichen Abschnitt 20 des Blechteils 14, insbesondere auf der Oberseite 15 des beweglichen Abschnitts 20 befestigt. Der bewegliche Abschnitt 20 kann zur Justage des in das Gehäuse 2 des Scheinwerfers 1 eingebauten Lichtmoduls 6 zusammen mit der mindestens einen Halbleiterlichtquelle 11 und der Bündelungsoptik 13 relativ zu dem feststehenden Abschnitt 19 bewegt und in einer justierten Lage relativ dazu festgelegt werden. Der bewegliche Abschnitt 20 des als Blechteil ausgebildeten Kühlkörpers 14 ist vorzugsweise um eine Verstellachse 24 relativ zu dem feststehenden Abschnitt 19 bewegbar. Die Verstellachse 24 verläuft im Wesentlichen horizontal und senkrecht zu einer Lichtaustrittsrichtung 3 des Lichtmoduls 6. Die Verstellachse 24 kann durch Materialabtragung bzw. -verjüngungen und/oder Schlitze in dem Material des als Blechteil ausgebildeten Kühlkörpers 14 ausgebildet sein, die sich entlang der Verstellachse 24 erstrecken. In dem gezeigten Beispiel umfasst das Blechteil im Bereich der Verstellachse 24 mehrere Schlitze 25, die sich entlang der Verstellachse 24 erstrecken. Die einzelnen Schlitze 25 sind lediglich durch Stege 26 unterbrochen, welche eine Verbindung zwischen dem feststehenden Abschnitt 19 und dem beweglichen Abschnitt 20 des als Blechteil ausgebildeten Kühlkörpers 14 herstellen. Die Längsachsen der Schlitze 25 bilden gewissermaßen die Verstellachse 24.The circuit board 10 with the at least one semiconductor light source 11 and the bundling optics 13 are fastened on the movable section 20 of the sheet metal part 14, in particular on the upper side 15 of the movable section 20. For the adjustment of the light module 6 built into the housing 2 of the headlight 1, the movable section 20 can be moved together with the at least one semiconductor light source 11 and the focusing optics 13 relative to the fixed section 19 and can be fixed in an adjusted position relative thereto. The movable section 20 of the heat sink 14 designed as a sheet metal part is preferably movable about an adjustment axis 24 relative to the fixed section 19. The adjustment axis 24 runs essentially horizontally and perpendicular to a light exit direction 3 of the light module 6. The adjustment axis 24 can be formed by material removal or tapering and / or slots in the material of the heat sink 14 designed as a sheet metal part, which extend along the adjustment axis 24 . In the example shown, the sheet metal part comprises a plurality of slots 25 in the area of the adjustment axis 24, which extend along the adjustment axis 24. The individual slots 25 are only interrupted by webs 26, which produce a connection between the fixed section 19 and the movable section 20 of the heat sink 14 designed as a sheet metal part. The longitudinal axes of the slots 25 to a certain extent form the adjustment axis 24.

Zum Verstellen des beweglichen Abschnitts 20 des als Blechteil ausgebildeten Kühlkörpers 14 gibt es eine Vielzahl von Möglichkeiten. Gemäß dem hier gezeigten Beispiel kann der bewegliche Abschnitt 20 des Blechteils mittels einer Verstellschraube 27 relativ zu dem feststehenden Abschnitt 19 des Blechteils bzw. einem damit verbundenen anderen Bauteil des Scheinwerfers 1, bspw. relativ zu dem Trägerelement 21, bewegt und in einer justierten Lage relativ dazu festgelegt werden. Die Bewegung des beweglichen Abschnitts 20 des Blechteils mittels der Verstellschraube 27 erfolgt vorzugsweise entgegen der Kraft eines Federelements 31. Falls das Blechteil aus einem elastisch verformbaren Material besteht, bspw. aus Federstahl, könnte eventuell auf ein separates Federelement 31 auch verzichtet werden. Selbstverständlich können auch mehrere Verstellschrauben 27 vorgesehen werden.There are a multitude of possibilities for adjusting the movable section 20 of the heat sink 14 designed as a sheet metal part. According to the example shown here, the movable section 20 of the sheet metal part can be moved by means of an adjusting screw 27 relative to the fixed section 19 of the sheet metal part or an associated other component of the headlight 1, for example relative to the support element 21, and in an adjusted position relative to be determined. The movement of the movable section 20 of the sheet metal part by means of the adjusting screw 27 preferably takes place against the force of a spring element 31. If the sheet metal part consists of an elastically deformable material, for example spring steel, a separate spring element 31 could possibly also be dispensed with. Of course, several adjustment screws 27 can also be provided.

Die Verstellschraube 27 ist vorzugsweise durch eine Öffnung (vorzugsweise ohne Gewinde) in dem beweglichen Abschnitt 20 des als Blechteil ausgebildeten Kühlkörpers 14 hindurchgeführt und in eine Gewindebohrung 28 des Gehäuses 2 des Scheinwerfers 1 oder eines damit in Verbindung stehenden Teils, insbesondere des Trägerelements 21, das in einem montierten Zustand des Scheinwerfers 1 an dem Gehäuse 2 des Scheinwerfers 1 befestigt ist, eingeschraubt. Durch Einschrauben der Verstellschraube 27 in die Gewindebohrung 28 wird der bewegliche Abschnitt 20 des Blechteils entgegen der Federkraft des zusätzlichen Federelements 31 in Richtung des Trägerelements 21 verstellt, und die Lichtaustrittsrichtung 3 des Lichtmoduls 6 wird vertikal nach oben verstellt. Durch Herausschrauben der Verstellschraube 27 aus der Gewindebohrung 28 wird der bewegliche Abschnitt 20 des Blechteils aufgrund der Federkraft des Federelements 31 weg von dem Trägerelement 21 verstellt und die Lichtaustrittsrichtung 3 des Lichtmoduls 6 wird vertikal nach unten verstellt. Die Verstellbewegung des beweglichen Abschnitts 20 und mit diesem der Lichtquellen 11 und der Bündelungsoptik 13 ist in Figur 5 durch einen Doppelpfeil 29 repräsentiert. Die Drehbewegung um die Verstellachse 24 ist durch einen Doppelpfeil 30 repräsentiert.The adjusting screw 27 is preferably passed through an opening (preferably without thread) in the movable section 20 of the heat sink 14 formed as a sheet metal part and into a threaded bore 28 of the housing 2 of the headlight 1 or a part connected therewith, in particular the carrier element 21, that is fastened to the housing 2 of the headlamp 1 in an assembled state of the headlamp 1. By screwing the adjusting screw 27 into the threaded bore 28, the movable section 20 of the sheet metal part is adjusted against the spring force of the additional spring element 31 in the direction of the carrier element 21, and the light exit direction 3 of the light module 6 is adjusted vertically upwards. By unscrewing the Adjusting screw 27 from the threaded bore 28, the movable section 20 of the sheet metal part is moved away from the carrier element 21 due to the spring force of the spring element 31 and the light exit direction 3 of the light module 6 is adjusted vertically downward. The adjustment movement of the movable section 20 and with it the light sources 11 and the focusing optics 13 is shown in FIG Figure 5 represented by a double arrow 29. The rotary movement about the adjustment axis 24 is represented by a double arrow 30.

Das Federelement 31 ist vorzugsweise als eine Druckfeder und Spiralfeder ausgebildet. Das als Spiralfeder ausgebildete Federelement 31 umgibt die Verstellschraube 27 bzw. deren Schraubenschaft. Das Federelement 31 wirkt zwischen dem beweglichen Abschnitt 20 des Blechteils und dem Gehäuse 2 des Scheinwerfers 1 bzw. einem damit in Verbindung stehenden Bauteil, insbesondere mit dem Trägerelement 21, das in einem montierten Zustand des Scheinwerfers 1 an dem Gehäuse 2 des Scheinwerfers 1 befestigt ist. Das Federelement 31 wirkt der durch die Verstellschraube 27 bewirkten Verstellbewegung des beweglichen Abschnitts 20 entgegen. In dem hier gezeigten Beispiel wirkt das Federelement 31 derart, dass es den beweglichen Abschnitt 20 und das Trägerelement 21 auseinander drückt und so eine Vergrößerung des Abstands dazwischen bewirkt (also in +z-Richtung), sobald die Verstellschraube 27 den Weg hierfür freigibt, indem sie aus der Gewindebohrung 28 herausgeschraubt wird. Das Federelement 31 bewirkt zudem, dass der bewegliche Abschnitt 20 in einer festen, genau definierten Position verbleibt und nicht vibriert oder zittert, bspw. aufgrund von Vibrationen des Fahrzeugs während der Fahrt.The spring element 31 is preferably designed as a compression spring and spiral spring. The spring element 31 designed as a spiral spring surrounds the adjusting screw 27 or its screw shaft. The spring element 31 acts between the movable section 20 of the sheet metal part and the housing 2 of the headlight 1 or a component connected therewith, in particular with the carrier element 21, which is fastened to the housing 2 of the headlight 1 in an assembled state of the headlight 1 . The spring element 31 counteracts the adjustment movement of the movable section 20 caused by the adjustment screw 27. In the example shown here, the spring element 31 acts in such a way that it pushes the movable section 20 and the carrier element 21 apart and thus increases the distance between them (i.e. in the + z direction) as soon as the adjusting screw 27 clears the way for this by it is screwed out of the threaded bore 28. The spring element 31 also has the effect that the movable section 20 remains in a fixed, precisely defined position and does not vibrate or tremble, for example due to vibrations of the vehicle while driving.

In Figur 7 ist das Innere eines Kraftfahrzeugscheinwerfers 1 gezeigt, das in diesem Beispiel drei nebeneinander angeordnete Lichtmodule 6.1, 6.2 und 6.3 aufweist. Selbstverständlich können auch weniger oder mehr als drei Lichtmodule in dem Scheinwerfer 1 vorgesehen sein. Ferner müssen die Lichtmodule auch nicht nebeneinander, sondern können bspw. übereinander oder versetzt zueinander in dem Scheinwerfergehäuse 2 angeordnet sein. Die Lichtmodule 6.1, 6.2, 6.3 sind jeweils mit dem feststehenden Abschnitt 19 ihres Kühlkörpers 14 an einem gemeinsamen Trägerelement 21 befestigt. Selbstverständlich wäre es auch denkbar, dass jedes der Lichtmodule 6.1, 6.2, 6.3 an einem eigenen Trägerelement 21 befestigt wäre. Das oder die Trägerelemente 21 können gemeinsam relativ zu dem Gehäuse 2 des Scheinwerfers 1 verstellt werden, bspw. durch Verschwenken um eine horizontale Achse 32 zur Realisierung einer Leuchtweiteverstellung oder um eine vertikale Achse (nicht dargestellt) zur Realisierung einer dynamischen Kurvenlichtfunktion. Zur Justage der einzelnen Lichtmodule 6.1, 6.2, 6.3 kann jedes Lichtmodul 6.1, 6.2, 6.3 für sich alleine in der oben beschriebenen Weise relativ zu dem Scheinwerfergehäuse 2 justiert werden, indem der bewegliche Abschnitt 20 des Kühlkörpers 14 relativ zu dem feststehenden Abschnitt 19 bewegt und in der justierten Position festgelegt wird.In Figure 7 is the interior of a motor vehicle headlight 1, which in this example has three light modules 6.1, 6.2 and 6.3 arranged next to one another. Of course, fewer or more than three light modules can also be provided in the headlight 1. Furthermore, the light modules also do not have to be next to one another, but instead can be arranged, for example, one above the other or offset in the headlight housing 2. The light modules 6.1, 6.2, 6.3 are each fastened with the fixed section 19 of their heat sink 14 to a common carrier element 21. Of course, it would also be conceivable that each of the light modules 6.1, 6.2, 6.3 would be attached to its own carrier element 21. The carrier element (s) 21 can be adjusted together relative to the housing 2 of the headlight 1, for example by pivoting about a horizontal axis 32 for realizing a headlight range adjustment or about a vertical axis (not shown) for realizing a dynamic cornering light function. To adjust the individual light modules 6.1, 6.2, 6.3, each light module 6.1, 6.2, 6.3 can be adjusted individually in the manner described above relative to the headlight housing 2 by moving the movable section 20 of the heat sink 14 relative to the fixed section 19 and is set in the adjusted position.

Vorzugsweise ist ein Lichtmodul 6, bspw. das Lichtmodul 6.1, zur Erzeugung eines Grundlichts einer Abblendlichtverteilung mit relativ breiter Streuung (breites Lichtbündel mit normaler Intensität) und einer streng horizontalen Helldunkelgrenze, ein anderes Lichtmodul 6, bspw. das Lichtmodul 6.2, zur Erzeugung eines Spotlichts der Abblendlichtverteilung mit einer im Vergleich zum Grundlicht deutlich geringeren Streuung (konzentriertes Lichtbündel im Zentrum der Lichtverteilung mit hoher Intensität) und einer asymmetrischen Helldunkelgrenze und ein drittes Lichtmodul 6, bspw. das Lichtmodul 6.3, zur Erzeugung einer Fernlichtverteilung ausgebildet, indem es bspw. nur einen Bereich oberhalb der horizontalen Helldunkelgrenze der Abblendlichtverteilung ausleuchtet. Eine Überlagerung von Grundlicht und Spotlicht erzeugt dann die resultierende abgeblendete Lichtverteilung (z.B. Abblendlicht) des Scheinwerfers 1. Durch die Justage der einzelnen Lichtmodule 6.1, 6.2, 6.3 können die horizontalen Helldunkelgrenzen der durch die verschiedenen Lichtmodule 6.1, 6.2, 6.3 erzeugten Einzel-Lichtverteilungen aufeinander ausgerichtet werden.Preferably, a light module 6, for example the light module 6.1, for generating a basic light of a low-beam light distribution with a relatively wide scatter (wide light beam with normal intensity) and a strictly horizontal chiaroscuro limit, another light module 6, for example the light module 6.2, for generating a spot light the low beam distribution with a significantly lower scatter than the basic light (concentrated light beam in the center of the light distribution with high intensity) and an asymmetrical The light-dark boundary and a third light module 6, for example the light module 6.3, are designed to produce a high-beam distribution by illuminating, for example, only a region above the horizontal light-dark boundary of the low-beam light distribution. A superposition of basic light and spot light then produces the resulting dimmed light distribution (for example low beam) of the headlight 1. By adjusting the individual light modules 6.1, 6.2, 6.3, the horizontal light-dark limits of the individual light distributions generated by the various light modules 6.1, 6.2, 6.3 can be superimposed on one another be aligned.

Claims (14)

  1. Motor vehicle headlamp (1) comprising a housing (2) and at least one light module (6) arranged therein, the light module (6) comprising at least one semiconductor light source (11) fixed and electrically contacted on a circuit board (10) and a focusing optic (13) and a heat sink (14), on which the board (10) and the focusing optics (13) are fixed, the heat sink (14) comprising a sheet metal part bent into a three-dimensional shape about at least one bending axis (18), characterised in that the sheet metal part itself consists of a fixed portion (19) which is fixed in relation to a housing (2) of the headlamp (1), when the light module (6) is mounted in the housing (2) of the headlamp (1) and a portion (20) movable relative to the fixed portion (19), wherein the board (10) with the at least one semiconductor light source (11) and the focusing optics (13) are fixed on the movable section (20) of the sheet metal part and the movable section (20), for adjusting the light module (6) installed in the housing (2) of the headlamp (1), is movable together with the at least one semiconductor light source (11) and the focusing optics (13) relative to the fixed section (19) and can be fixed in an adjusted position relative thereto.
  2. Motor vehicle headlamp (1) according to claim 1, characterised in that the movable portion (20) of the sheet metal part is pivotable about an adjustment axis (24) relative to the fixed portion (19) of the sheet metal part.
  3. Motor vehicle headlamp (1) according to claim 2, characterized in that the adjustment axis (24) of the movable portion (20) of the sheet metal part is substantially horizontal and perpendicular to a light emission direction (3) of the light module (6).
  4. Motor vehicle headlamp (1) according to claim 2 or 3, characterized in that the adjustment axis (24) is formed by material removals and/or slots (25) by material of the sheet metal part extending along the adjustment axis (24) .
  5. Motor vehicle headlamp (1) according to any one of claims 1 to 4, characterized in that the movable portion (20) of the sheet metal part comprises at least one upper face (15) on which the plate (10) with the at least one semiconductor light source (11) and the focusing optics (13) are fixed.
  6. Motor vehicle headlamp (1) according to claim 5, characterised in that, in a state of the light module (6) installed and adjusted in the housing (2) of the headlamp (1), the upper side of the movable portion (20) has a main surface extension which is substantially horizontal or slightly inclined thereto.
  7. Motor vehicle headlamp (1) according to claim 6, characterised in that the upper side of the movable portion (20) has a main surface extension, in a state of the light module (6) installed and adjusted in the housing (2) of the headlamp (1), which is inclined slightly rearwards against the direction of travel and relative to a horizontal plane.
  8. Motor vehicle headlamp (1) according to any one of claims 1 to 7, characterised in that the movable portion (20) of the sheet metal part comprises side surfaces (23) having a main surface extension perpendicular to the upper side of the movable portion (20).
  9. Motor vehicle headlamp (1) according to any one of claims 1 to 8, characterised in that the fixed portion (19) of the sheet metal part comprises at least part of a front face of the sheet metal part which is fixed at least indirectly to the housing (2) of the headlamp (1).
  10. Motor vehicle headlamp (1) according to any one of claims 1 to 9, characterised in that the fixed portion (19) of the sheet metal part is fixed indirectly to the housing (2) of the headlamp (1) via a support element (21) which is fixed to the housing (2) of the headlamp (1) in an assembled state of the headlamp (1).
  11. Motor vehicle headlamp (1) according to one of claims 1 to 10, characterised in that the movable portion (20) of the sheet metal part is movable relative to the fixed portion (19) of the sheet metal part by means of at least one adjusting screw (27) and can be fixed in an adjusted position relative thereto.
  12. Motor vehicle headlamp (1) according to claim 11, characterised in that the at least one adjusting screw (27) can be passed through an opening in the movable portion (20) of the sheet metal part and can be screwed into a threaded bore (28) in the housing (2) of the headlamp (1) or a part fastened thereto, in particular a carrier element (21), which is fastened to the housing (2) of the headlamp (1) in an assembled state of the headlamp (1).
  13. Motor vehicle headlamp (1) according to claim 11 or 12, characterised in that the light module (6) comprises a spring element (31) which acts against an adjustment direction (29), which can be effected by the adjustment screw (27), between the movable section (20) of the sheet metal part and the housing (2) of the headlamp (1) or a part fastened thereto, in particular a carrier element (21) which is fastened to the housing (2) of the headlamp (1) in an assembled state of the headlamp (1).
  14. Motor vehicle headlamp (1) according to one of the preceding claims, characterised in that the headlamp (1) comprises a plurality of light modules (6) arranged next to one another and fixed to a common carrier element (21) which is fixed to a housing (2) of the headlamp (1) in an assembled state of the headlamp (1), which light modules (6) are each individually adjustable relative to one another and relative to the carrier element (21) and which are jointly adjustable by adjusting the carrier element (21) relative to the housing (2) of the headlamp (1) .
EP18182604.1A 2017-07-12 2018-07-10 Light module of a motor vehicle headlight and headlight with such a light module Active EP3428512B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017115699.2A DE102017115699A1 (en) 2017-07-12 2017-07-12 Light module of a motor vehicle headlight and motor vehicle headlight with such a light module

Publications (2)

Publication Number Publication Date
EP3428512A1 EP3428512A1 (en) 2019-01-16
EP3428512B1 true EP3428512B1 (en) 2020-04-08

Family

ID=62909416

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18182604.1A Active EP3428512B1 (en) 2017-07-12 2018-07-10 Light module of a motor vehicle headlight and headlight with such a light module

Country Status (3)

Country Link
EP (1) EP3428512B1 (en)
CN (1) CN109253429A (en)
DE (1) DE102017115699A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3136833A1 (en) * 2022-06-20 2023-12-22 Valeo Vision AUTOMOTIVE LIGHTING MODULE WITH BLOCK SCREEN USED TO POSITION LIGHT SOURCES

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202019105985U1 (en) * 2019-10-28 2021-02-01 Automotive Lighting Reutlingen Gmbh Light module of a motor vehicle headlight and motor vehicle headlight with such a light module
EP3872395A1 (en) 2020-02-27 2021-09-01 HELLA Saturnus Slovenija d.o.o. Light module of a motor vehicle lighting unit and method for assembling a light module of a motor vehicle
DE102022126234A1 (en) 2022-10-11 2022-12-29 Daimler Truck AG Headlights for a vehicle, in particular for a commercial vehicle

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4922087B2 (en) * 2007-07-12 2012-04-25 スタンレー電気株式会社 Vehicle headlamp
AT512586B1 (en) * 2012-02-24 2014-06-15 Zizala Lichtsysteme Gmbh Lighting device for a motor vehicle and vehicle headlights
JP2014165150A (en) * 2013-02-27 2014-09-08 Koito Mfg Co Ltd Vehicular lighting fixture
DE102013104190A1 (en) * 2013-04-25 2014-10-30 Hella Kgaa Hueck & Co. Module assembly for placement in a headlight
FR3010488B1 (en) * 2013-09-06 2015-09-18 Valeo Vision LUMINOUS MODULE FOR LIGHTING AND / OR SIGNALING DEVICE
FR3039885B1 (en) * 2015-08-06 2022-06-24 Valeo Iluminacion Sa HEAT SINK FOR MOTOR VEHICLE OPTICAL MODULE
JP6769704B2 (en) * 2015-11-30 2020-10-14 株式会社小糸製作所 Vehicle lighting

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3136833A1 (en) * 2022-06-20 2023-12-22 Valeo Vision AUTOMOTIVE LIGHTING MODULE WITH BLOCK SCREEN USED TO POSITION LIGHT SOURCES
WO2023247342A1 (en) * 2022-06-20 2023-12-28 Valeo Vision Automotive lighting module with blocking screen for positioning the light sources

Also Published As

Publication number Publication date
DE102017115699A1 (en) 2019-01-17
CN109253429A (en) 2019-01-22
EP3428512A1 (en) 2019-01-16

Similar Documents

Publication Publication Date Title
EP3428512B1 (en) Light module of a motor vehicle headlight and headlight with such a light module
DE102007040728B4 (en) vehicle headlights
EP2339228B1 (en) Light module for a lighting device and lighting device of a motor vehicle with such a light module
EP3339720B1 (en) Primary lens assembly for use in a motor vehicle lighting device and motor vehicle lighting device with such a primary lens assembly
DE102008051109B4 (en) Motor vehicle headlight and method for producing a motor vehicle headlight
EP3351849B1 (en) Led module and lighting device for a motor vehicle with a plurality of such led modules
DE102007040760B4 (en) Projection module of a vehicle headlight
EP2492580B1 (en) Lighting device for installation in a motor vehicle
DE102014205994B4 (en) Light module with semiconductor light source and attachment optics and motor vehicle headlight with such a light module
WO2014008523A1 (en) Lighting device for a motor vehicle
EP2488785B1 (en) Projection headlight for vehicles
EP2431657A2 (en) Reflector module of a motor vehicle headlamp
DE102009033910B4 (en) Lighting device for a motor vehicle
EP2597359B9 (en) Projection light module for a motor vehicle headlamp
EP2863108B1 (en) LED module of a motor vehicle headlamp
EP2693106A2 (en) Light module
EP1912018A1 (en) Projection headlamp for vehicles
DE602005001817T2 (en) Elliptical optical module with trim for motor vehicles
EP2488390B1 (en) Lighting device for vehicles
DE19933663B4 (en) Headlights for vehicles
EP3625500B1 (en) Lighting module of a motor vehicle headlight, and motor vehicle headlight comprising such a lighting module
DE102011003910B4 (en) Headlight of a motor vehicle
DE102014110702B4 (en) Shielding device for low beam headlights
EP3386042B1 (en) Method for mounting a laser diode on a heat sink, light emitting unit mounted using this method and motor vehicle headlamp with such a light emitting unit
DE102009051026A1 (en) LED-illuminating device i.e. LED module, for headlight of motor vehicle, has diaphragm adjustable by drive unit and arranged adjacent to LED and/or lens, and screen guided on support by guiding unit, where support carries LED and/or lens

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20190716

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

RIC1 Information provided on ipc code assigned before grant

Ipc: F21S 41/19 20180101ALI20191007BHEP

Ipc: F21S 45/47 20180101ALI20191007BHEP

Ipc: F21S 41/39 20180101ALI20191007BHEP

Ipc: F21S 41/147 20180101AFI20191007BHEP

Ipc: F21S 41/32 20180101ALI20191007BHEP

Ipc: F21S 45/49 20180101ALI20191007BHEP

INTG Intention to grant announced

Effective date: 20191025

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 1254857

Country of ref document: AT

Kind code of ref document: T

Effective date: 20200415

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502018001136

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20200408

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200708

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200817

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200709

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200808

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200708

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502018001136

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

26N No opposition filed

Effective date: 20210112

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20200731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200710

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200731

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200710

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210731

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200408

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20220710

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220710

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20230620

Year of fee payment: 6