EP2888520B1 - Lighting module for a motor vehicle - Google Patents

Lighting module for a motor vehicle Download PDF

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Publication number
EP2888520B1
EP2888520B1 EP13762368.2A EP13762368A EP2888520B1 EP 2888520 B1 EP2888520 B1 EP 2888520B1 EP 13762368 A EP13762368 A EP 13762368A EP 2888520 B1 EP2888520 B1 EP 2888520B1
Authority
EP
European Patent Office
Prior art keywords
lighting module
module according
support plate
light source
light
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
EP13762368.2A
Other languages
German (de)
French (fr)
Other versions
EP2888520A1 (en
Inventor
Christian Jackl
Clemens Hauer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZKW Group GmbH
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ZKW Group GmbH
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Filing date
Publication date
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Publication of EP2888520A1 publication Critical patent/EP2888520A1/en
Application granted granted Critical
Publication of EP2888520B1 publication Critical patent/EP2888520B1/en
Active legal-status Critical Current
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F21S41/192—Details of lamp holders, terminals or connectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/39—Attachment thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
    • F21S41/336—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with discontinuity at the junction between adjacent areas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings

Definitions

  • the invention further relates to a vehicle headlight with at least one above-mentioned light module.
  • a light module for a vehicle headlight or a vehicle headlight has one or more light sources and one or more light-shaping bodies, for example one or more reflectors. Light emerging from the light source is emitted by such a reflector as a desired light image into an area in front of the vehicle in which the vehicle headlight is installed.
  • the exact positioning of the light source in relation to the reflector is of particular importance.
  • the deviations from the target position may only be in the 1/10 mm range, i.e.
  • the reflector and LED light source (s) must be positioned extremely precisely to one another.
  • a light module described at the beginning enables an exact and at the same time simple assembly of a light module.
  • the pamphlet JP 2008 108613 A discloses a generic light module, wherein the light-shaping body is a reflector.
  • the reference positions can be attached, for example, after the at least one light source has been positioned on the carrier plate, so that the light-shaping body can be positioned as precisely as possible in relation to the at least one light source by aligning it at these reference positions.
  • the reference positions are initially attached to the carrier plate and then, depending on their exact position, the at least one light source is attached to the carrier plate.
  • the light-shaping body can be positioned exactly in relation to the at least one light source in these reference positions and is at least temporarily held in this position by means of the at least one restoring element until it is finally fixed.
  • the carrier plate is advantageously glued to the heat sink.
  • the at least one light source is an LED light source, which has one or more light-emitting diodes, and that the carrier plate is a circuit board (LED print) for which there is at least one LED light source.
  • the at least one LED light source is preferably soldered to the circuit board.
  • the at least one return element in the reference position of the fastening base - and thus in the reference position of the reflector - is preloaded between the fastening base and a stop area of the heat sink, such that the fastening base is held in its reference position with respect to the carrier plate .
  • At least one, preferably two fastening elements is / are provided for fastening the fastening base to the heat sink.
  • the at least one fastening element is a spring, e.g. a sheet-metal spring, which is preferably designed in the form of a bow spring, which is clipped onto the mounting base and the heat sink, for example, and / or is suspended from these components.
  • a spring e.g. a sheet-metal spring, which is preferably designed in the form of a bow spring, which is clipped onto the mounting base and the heat sink, for example, and / or is suspended from these components.
  • the restoring element comprises at least one spring element.
  • These one or more springs (such as compression springs) hold the light-shaping body in its reference position until it is fixed with the fastening elements.
  • the reference positions are arranged in relation to the geometric center of the at least one light source or to the brightest area of the at least one light source on the carrier plate.
  • These areas can be determined with a camera, for example.
  • the one or more reference positions is designed in the form of one or more holes, for example elongated holes, and / or in the form of one or more, preferably straight reference edges.
  • the reference positions are drilled and / or milled.
  • the reference positions can in principle be designed in the form of webs, bores, support or contact surfaces, elongated holes, stops, etc.
  • a suitable reference surface / edge / hole is created that brings the light-shaping body into a clearly defined position.
  • An elongated hole is used, for example, to ensure that the light-shaping body can no longer be moved laterally (left / right), while edges, for example, limit the movement of the light-shaping body in a certain direction, for example in the direction of the light source.
  • the heat sink has two sections which are preferably at right angles to one another, and wherein the carrier plate is arranged on one of the sections.
  • the stop area for the return element is attached to one of the two sections, preferably to both sections, e.g. it is formed in one piece with this or these sections.
  • Figure 1 shows a carrier plate 3, here a circuit board (LED print) on which a light source 2 is attached.
  • a carrier plate 3 here a circuit board (LED print) on which a light source 2 is attached.
  • the light source 2 is an LED light source, which here has two light-emitting diodes.
  • the carrier plate 3 is a circuit board for the LED light source 2.
  • the LED light source 2 is preferably soldered to the circuit board 3.
  • the carrier plate 3 has several reference positions 4 for a reflector 1, the position of the reference positions 4 depending on the position of the LED light source 2.
  • the geometric center of the LED light source 2 or the brightest area of the LED light source 2 is determined, for example with a camera, and the reference positions are then preferably arranged taking into account the geometric center of the LED light source 2 or the brightest area of the LED light source 2.
  • the reference positions 4 are an elongated hole 4a open on one side and two reference edges or reference planes 4b running in a straight line.
  • the reference positions 4 are, for example, drilled, milled or manufactured in some other way.
  • FIG. 1 a connector housing 5 for the electrical contacting of the LED light source 2 is also shown.
  • the reflector 1 is referenced at the reference positions 4, ie aligned and positioned on the carrier plate 3, as shown in FIG Figures 5 - 8 is shown from different views.
  • the reflector 1 has, as in particular in the Figures 3 and 4 can be clearly seen, in the embodiment shown, via a fastening base 1 ', which is provided with the corresponding formations corresponding to the reference positions 4a, 4b, for example an extension 1a, which is arranged in the elongated hole 4a, as well as from Base surfaces or base planes 1b, which come to rest on the reference surfaces 4b of the carrier plate 3, is equipped.
  • Figures 5 and 6 show how the reflector 1 or the base 1 'is positioned with the extension 1a in the elongated hole 4a.
  • the reflector 1 is positioned in the desired position in relation to the LED light source 1 arranged on the carrier plate 3 on the carrier plate 3 and is attached to the carrier plate 3 or in relation to the carrier plate 3, as described further below is.
  • the reflector 1 assumes the desired position.
  • the reflector 1 can be temporarily fixed with a restoring element 7, for example in the form of a spring (such as a compression spring); the restoring element 7 holds the reflector 1 or generally the light-shaping body in its reference position (desired position) until it is finally fixed.
  • a restoring element 7 for example in the form of a spring (such as a compression spring); the restoring element 7 holds the reflector 1 or generally the light-shaping body in its reference position (desired position) until it is finally fixed.
  • Figure 9 shows in this context a light module 10 according to the invention.
  • the carrier plate 3 is attached to the cooling body 6, for example glued to it.
  • the heat sink 6, which is also shown in Figure 2 is shown has two sections 6a, 6a 'which are at right angles to one another.
  • the carrier plate 3 is arranged on one of the two sections 6a, for example glued to it.
  • the heat sink 6 has a stop area 6b for the restoring element 7, which stop area 6b is, for example, formed in one piece with the two sections 6a, 6a '.
  • the restoring element 7 When the reflector 1 is positioned, the restoring element 7 rests against the stop region 6b and is compressed, ie the restoring element 7 is pretensioned between the section 6b and the fastening base 1 ', so that the fastening base 1' is pressed into the reference positions 4a, 4b. In this way, the reflector 1 is at least temporarily held in this position.
  • the restoring element 7 is preferably, as shown, connected in one piece with the reflector 1, in particular with its fastening base 1 '.
  • the reflector 1 For permanent (possibly detachable) fastening of the reflector 1, provision is made for the reflector 1 to be fastened with two fastening elements 8 to the heat sink 6 (in the example shown on section 6a of the heat sink 6 to which the carrier plate 3 is fastened). This is schematically in Figures 9 and 10 shown.
  • the reflector 1 is fastened with its fastening base 1 'to the cooling body 6, so that a stable fastening is created.
  • the reflector 1 or its fastening base 1 ' has a first, here inner bearing surface 1c, by means of which the base 1' rests on the board, and a second, here outer bearing surface 1d, by means of which the base 1 ' on the heat sink 6, ie rests on the section 6 a of the heat sink 6.
  • first, here inner bearing surface 1c by means of which the base 1' rests on the board
  • second, here outer bearing surface 1d by means of which the base 1 ' on the heat sink 6, ie rests on the section 6 a of the heat sink 6.
  • the fastening elements 8 are designed, for example, as springs, for example sheet-metal springs, which springs are preferably designed in the form of bow springs.
  • the springs are preferably clipped onto the heat sink 6 and the fastening base 1 '; the base 1' also has, for example, as in FIG Figures 9 and 10 also shown slot-shaped openings for hanging the fastening elements 8 on.
  • the light module 10 is shown here with a dedicated heat sink 6 assigned only to the light module 10 shown.
  • a heat sink is provided for several light modules, so that several carrier plates with a light source and light-shaping body are arranged on a single heat sink.
  • the light-shaping body can also be an optical system, for example a lens, a light guide, etc.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)

Description

Die Erfindung betrifft ein Lichtmodul für ein Kraftfahrzeug bzw. für einen Kraftfahrzeug-Scheinwerfer, wobei das Lichtmodul umfasst:

  • -) einen Kühlkörper;
  • -) eine Trägerplatte für zumindest eine Lichtquelle;
  • -) zumindest eine auf der Trägerplatte angeordnete Lichtquelle;
  • -) einen lichtformenden Körper, beispielsweise einen Reflektor;
wobei die Trägerplatte auf dem Kühlkörper befestigt ist, wobei die Trägerplatte ein oder mehrere Referenzpositionen zum Referenzieren eines lichtformenden Körpers aufweist, und wobei der lichtformende Körper einen Befestigungssockel aufweist, mittels welchem Befestigungssockel der lichtformende Körper an der zumindest einen Referenzposition der Trägerplatte referenzierbar ist.The invention relates to a light module for a motor vehicle or for a motor vehicle headlight, the light module comprising:
  • -) a heat sink;
  • -) a carrier plate for at least one light source;
  • -) At least one light source arranged on the carrier plate;
  • -) a light-shaping body, for example a reflector;
wherein the carrier plate is attached to the heat sink, wherein the carrier plate has one or more reference positions for referencing a light-shaping body, and wherein the light-shaping body has a fastening base, by means of which fastening base the light-shaping body can be referenced at the at least one reference position of the carrier plate.

Weiters betrifft die Erfindung einen Fahrzeugscheinwerfer mit zumindest einem oben genannten Lichtmodul.The invention further relates to a vehicle headlight with at least one above-mentioned light module.

Zur Erzeugung einer gewünschten Lichtverteilung in dem Bereich vor bzw. hinter einem Fahrzeug weist ein Lichtmodul für einen Fahrzeugscheinwerfer bzw. ein Fahrzeugscheinwerfer ein oder mehrere Lichtquellen sowie einen oder mehrere Licht formende Körper, beispielsweise einen oder mehrere Reflektoren auf. Aus der Lichtquelle austretendes Licht wird von einem solchen Reflektor als gewünschtes Lichtbild in einen Bereich vor dem Fahrzeug, in welches der Fahrzeugscheinwerfer eingebaut ist, abgestrahlt.To generate a desired light distribution in the area in front of or behind a vehicle, a light module for a vehicle headlight or a vehicle headlight has one or more light sources and one or more light-shaping bodies, for example one or more reflectors. Light emerging from the light source is emitted by such a reflector as a desired light image into an area in front of the vehicle in which the vehicle headlight is installed.

Um ein optimales und insbesondere gesetzeskonformes Lichtbild erzeugen zu können, kommt der exakten Positionierung der Lichtquelle in Bezug auf den Reflektor besondere Bedeutung zu. Beispielsweise dürfen bei der Verwendung von LED-Lichtquellen, welche eine oder mehrere Leuchtdioden als Licht emittierende Elemente aufweisen, die Abweichungen von der Sollposition nur im 1/10 mm-Bereich liegen, d.h. Reflektor und LED-Lichtquelle(n) müssen äußerst exakt zueinander positioniert werden.In order to be able to generate an optimal and, in particular, legally compliant light image, the exact positioning of the light source in relation to the reflector is of particular importance. For example, when using LED light sources which have one or more light-emitting diodes as light-emitting elements, the deviations from the target position may only be in the 1/10 mm range, i.e. The reflector and LED light source (s) must be positioned extremely precisely to one another.

Ein eingangs beschriebenes Lichtmodul ermöglicht ein exaktes und gleichzeitig einfaches Zusammenbauen eines Lichtmoduls.A light module described at the beginning enables an exact and at the same time simple assembly of a light module.

Die Druckschrift JP 2008 108613 A offenbart ein gattungsgemäßes Lichtmodul, wobei der lichtformende Körper ein Reflektor ist.The pamphlet JP 2008 108613 A discloses a generic light module, wherein the light-shaping body is a reflector.

Es ist eine Aufgabe der Erfindung, ein Lichtmodul dahingehend zu verbessern, dass ein noch besseres und einfacheres Positionieren und insbesondere zuverlässiges Befestigen des Licht formenden Körpers an der Trägerplatte zu ermöglichen.It is an object of the invention to improve a light module in such a way that it enables even better and simpler positioning and, in particular, reliable fastening of the light-shaping body on the carrier plate.

Diese Aufgabe wird mit einem eingangs genannten Lichtmodul dadurch gelöst, dass erfindungsgemäß dem Befestigungssockel zumindest ein Rückstellelement zugeordnet ist, mittels welchem der Befestigungssockel zumindest temporär in seiner Referenzposition in Bezug auf die Trägerplatte befestigbar ist.This object is achieved with a light module mentioned at the outset in that according to the invention at least one restoring element is assigned to the fastening base, by means of which the fastening base can be fastened at least temporarily in its reference position with respect to the carrier plate.

Die Referenzpositionen können beispielsweise nach dem Positionieren der zumindest einen Lichtquelle auf der Trägerplatte angebracht werden, sodass der licht formende Körper durch Ausrichten an diesen Referenzpositionen möglichst exakt in Bezug auf die zumindest eine Lichtquelle positioniert werden kann.The reference positions can be attached, for example, after the at least one light source has been positioned on the carrier plate, so that the light-shaping body can be positioned as precisely as possible in relation to the at least one light source by aligning it at these reference positions.

Es kann aber auch vorgesehen sein, dass vorerst die Referenzpositionen an der Trägerplatte angebracht und anschließend, in Abhängigkeit von deren exakter Lage die zumindest eine Lichtquelle auf der Trägerplatte angebracht wird.However, it can also be provided that the reference positions are initially attached to the carrier plate and then, depending on their exact position, the at least one light source is attached to the carrier plate.

Der licht formende Körper kann in diesen Referenzpositionen exakt zu der zumindest einen Lichtquelle positioniert werden und wird mittels des zumindest einen Rückstellelementes zumindest temporär, bis zu seiner endgültigen Fixierung, in dieser Position gehalten.The light-shaping body can be positioned exactly in relation to the at least one light source in these reference positions and is at least temporarily held in this position by means of the at least one restoring element until it is finally fixed.

Um einen guten Wärmeübergang von der Trägerplatte auf den Kühlkörper zu gewährleisten, ist vorteilhafterweise die Trägerplatte mit dem Kühlkörper verklebt.In order to ensure good heat transfer from the carrier plate to the heat sink, the carrier plate is advantageously glued to the heat sink.

Bei einer konkreten Ausführungsform, bei welcher ein exaktes Positionieren des licht formenden Körpers besonders wichtig ist, ist vorgesehen, dass die zumindest eine Lichtquelle eine LED-Lichtquelle ist, welche eine oder mehrere Leuchtdioden aufweist, und dass die Trägerplatte eine Leiterplatte (LED-Print) für die zumindest eine LED-Lichtquelle ist. Die zumindest eine LED-Lichtquelle ist dabei mit der Leiterplatte vorzugsweise verlötet.In a specific embodiment, in which an exact positioning of the light-shaping body is particularly important, it is provided that the at least one light source is an LED light source, which has one or more light-emitting diodes, and that the carrier plate is a circuit board (LED print) for which there is at least one LED light source. The at least one LED light source is preferably soldered to the circuit board.

Erfindungsgemäß ist es vorgesehen, dass das zumindest eine Rückstellelement in der Referenzposition des Befestigungssockels - und somit in der Referenzposition des Reflektors - zwischen dem Befestigungssockel und einem Anschlagbereich des Kühlkörpers vorgespannt ist, derart, dass der Befestigungssockel in seiner Referenzposition in Bezug auf die Trägerplatte gehalten ist.According to the invention, it is provided that the at least one return element in the reference position of the fastening base - and thus in the reference position of the reflector - is preloaded between the fastening base and a stop area of the heat sink, such that the fastening base is held in its reference position with respect to the carrier plate .

Vorteilhafterweise ist vorgesehen, dass zumindest ein, vorzugsweise zwei Befestigungselemente zum Befestigen des Befestigungssockels an dem Kühlkörper vorgesehen ist/ sind.It is advantageously provided that at least one, preferably two fastening elements is / are provided for fastening the fastening base to the heat sink.

Beispielsweise ist dabei vorgesehen, dass das zumindest eine Befestigungselement eine Feder, z.B. eine Blechfeder, ist, welche vorzugsweise in Form einer Bügelfeder ausgebildet ist, welche beispielsweise auf den Befestigungssockel und den Kühlkörper aufgeklipst wird und/ oder an diesen Bauteilen eingehängt wird.For example, it is provided that the at least one fastening element is a spring, e.g. a sheet-metal spring, which is preferably designed in the form of a bow spring, which is clipped onto the mounting base and the heat sink, for example, and / or is suspended from these components.

Damit wird eine stabile, exakte und bei Bedarf wieder lösbare Befestigung des licht formenden Körpers in Bezug auf die zumindest eine Lichtquelle geschaffen.This creates a stable, exact and, if necessary, releasable fastening of the light-shaping body in relation to the at least one light source.

Weiters ist es von Vorteil, wenn das Rückstellelement zumindest ein Federelement umfasst. Diese eine oder die mehreren Federn (etwa Druckfedern) halten den licht formenden Körper solange in seiner Referenzposition, bis dieser mit den Befestigungselementen fixiert wird.It is also advantageous if the restoring element comprises at least one spring element. These one or more springs (such as compression springs) hold the light-shaping body in its reference position until it is fixed with the fastening elements.

Einfach im Zusammenbau und stabil ist es, wenn das zumindest eine Federelement einstückig mit dem Befestigungssockel ausgebildet ist.It is simple to assemble and stable when the at least one spring element is formed in one piece with the fastening base.

Für eine exakte Positionierung des licht formenden Körpers ist es von Vorteil, wenn die Referenzpositionen in Bezug auf die geometrische Mitte der zumindest einen Lichtquelle oder auf den hellsten Bereich der zumindest einen Lichtquelle auf der Trägerplatte angeordnet sind.For an exact positioning of the light-shaping body, it is advantageous if the reference positions are arranged in relation to the geometric center of the at least one light source or to the brightest area of the at least one light source on the carrier plate.

Diese Bereiche können beispielsweise mit einer Kamera ermittelt werden.These areas can be determined with a camera, for example.

Weiters ist bei konkreten Ausführungsformen vorgesehen, dass die eine oder die mehreren Referenzpositionen in Form von einer oder mehreren Löchern, beispielsweise Langlöchern, und/oder in Form von einer oder mehreren, vorzugsweise geradlinig verlaufenden Referenzkanten ausgebildet ist.Furthermore, it is provided in specific embodiments that the one or more reference positions is designed in the form of one or more holes, for example elongated holes, and / or in the form of one or more, preferably straight reference edges.

Beispielsweise kann vorgesehen sein, dass die Referenzpositionen gebohrt und/oder gefräst sind.For example, it can be provided that the reference positions are drilled and / or milled.

Die Referenzpositionen können grundsätzlich in Form von Stegen, Bohrungen, Auf- bzw. Anlageflächen, Langlöchern, Anschlägen etc. ausgebildet sein.The reference positions can in principle be designed in the form of webs, bores, support or contact surfaces, elongated holes, stops, etc.

Je nach Anwendung und Ausgestaltung des licht formenden Körpers wird die geeignete Referenzfläche/Kante/Loch erstellt, die den licht formenden Körper in eine klar definierte Lage bringt. Ein Langloch dient etwa dazu, dass der licht formende Körper sich nicht mehr seitlich (links/rechts) verschieben lässt, während beispielsweise Kanten die Bewegung des licht formenden Körper in eine bestimmte Richtung, etwa in Richtung zu der Lichtquelle hin begrenzen.Depending on the application and configuration of the light-shaping body, a suitable reference surface / edge / hole is created that brings the light-shaping body into a clearly defined position. An elongated hole is used, for example, to ensure that the light-shaping body can no longer be moved laterally (left / right), while edges, for example, limit the movement of the light-shaping body in a certain direction, for example in the direction of the light source.

Schließlich ist bei einer konkreten Ausführungsform der Erfindung noch vorgesehen, dass der Kühlkörper zwei Abschnitte aufweist, welche vorzugsweise rechtwinkelig zueinander stehen, und wobei die Trägerplatte auf einem der Abschnitte angeordnet ist. Vorzugsweise ist der Anschlagbereich für das Rückstellelement an einem der beiden Abschnitte, vorzugsweise an beiden Abschnitten angebracht, z.B. ist er mit diesem oder diesen Abschnitten einstückig ausgebildet.Finally, in a specific embodiment of the invention, it is also provided that the heat sink has two sections which are preferably at right angles to one another, and wherein the carrier plate is arranged on one of the sections. Preferably the stop area for the return element is attached to one of the two sections, preferably to both sections, e.g. it is formed in one piece with this or these sections.

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

  • Fig. 1 eine Trägerplatte mit darauf angeordneter Lichtquelle,
  • Fig. 2 einen Kühlkörper für ein erfindungsgemäßes Lichtmodul,
  • Fig. 3 einen Reflektor in einer Ansicht von schräg unten,
  • Fig. 4 den Reflektor aus Figur 3 in einer Ansicht von schräg oben,
  • Fig. 5 den Reflektor aus Figur 3 und 4, positioniert an einer Trägerplatte, in einer Seitenansicht,
  • Fig. 6 die Anordnung aus Figur 5, in einer Ansicht von der gegenüberliegenden Seite,
  • Fig. 7 eine Ansicht der Trägerplatte von unten mit positioniertem Reflektor,
  • Fig. 8 eine Ansicht auf die Trägerplatte mit angesetztem Reflektor von schräg oben,
  • Fig. 9 eine Ansicht eines an einem Kühlkörper in Bezug auf die Trägerplatte befestigten von schräg oben, und
  • Fig. 10 die Anordnung aus Figur 9 in einer Ansicht von schräg unten.
The invention is explained in more detail below with reference to the drawing. In this shows
  • Fig. 1 a carrier plate with a light source arranged on it,
  • Fig. 2 a heat sink for a light module according to the invention,
  • Fig. 3 a reflector in an oblique view from below,
  • Fig. 4 the reflector off Figure 3 in a view from diagonally above,
  • Fig. 5 the reflector off Figures 3 and 4 , positioned on a carrier plate, in a side view,
  • Fig. 6 the arrangement Figure 5 , in a view from the opposite side,
  • Fig. 7 a view of the carrier plate from below with the reflector positioned,
  • Fig. 8 a view of the carrier plate with attached reflector obliquely from above,
  • Fig. 9 a view of a mounted on a heat sink in relation to the carrier plate obliquely from above, and
  • Fig. 10 the arrangement Figure 9 in an oblique view from below.

Figur 1 zeigt eine Trägerplatte 3, hier eine Leiterplatte (LED-Print), auf welcher eine Lichtquelle 2 angebracht ist. Figure 1 shows a carrier plate 3, here a circuit board (LED print) on which a light source 2 is attached.

Bei der gezeigten Variante ist die Lichtquelle 2 eine LED-Lichtquelle, welche hier zwei Leuchtdioden aufweist. Entsprechend ist, wie oben schon erwähnt, die Trägerplatte 3 eine Leiterplatte für die LED-Lichtquelle 2. Vorzugsweise ist dabei die LED-Lichtquelle 2 mit der Leiterplatte 3 verlötet.In the variant shown, the light source 2 is an LED light source, which here has two light-emitting diodes. Correspondingly, as already mentioned above, the carrier plate 3 is a circuit board for the LED light source 2. The LED light source 2 is preferably soldered to the circuit board 3.

Weiters weist die Trägerplatte 3 mehrere Referenzpositionen 4 für einen Reflektor 1 auf, wobei die Lage der Referenzpositionen 4 von der Position der LED-Lichtquelle 2 abhängt.Furthermore, the carrier plate 3 has several reference positions 4 for a reflector 1, the position of the reference positions 4 depending on the position of the LED light source 2.

Dazu wird beispielsweise die geometrische Mitte der LED-Lichtquelle 2 oder der hellste Bereich der LED-Lichtquelle 2, beispielsweise mit einer Kamera ermittelt, und das Anordnen der Referenzpositionen erfolgt dann vorzugsweise unter Berücksichtigung der geometrischen Mitte der LED-Lichtquelle 2 oder des hellsten Bereiches der LED-Lichtquelle 2.For this purpose, for example, the geometric center of the LED light source 2 or the brightest area of the LED light source 2 is determined, for example with a camera, and the reference positions are then preferably arranged taking into account the geometric center of the LED light source 2 or the brightest area of the LED light source 2.

Bei den Referenzpositionen 4 handelt es sich in dem gezeigten Beispiel um ein an einer Seite offenes Langloch 4a sowie um zwei geradlinig verlaufende Referenzkanten bzw. Referenzebenen 4b. Die Referenzpositionen 4 werden beispielsweise gebohrt, gefräst oder auf andere Art und Weise gefertigt.In the example shown, the reference positions 4 are an elongated hole 4a open on one side and two reference edges or reference planes 4b running in a straight line. The reference positions 4 are, for example, drilled, milled or manufactured in some other way.

Weiters ist in Figur 1 noch ein Steckergehäuse 5 für die elektrische Kontaktierung der LED-Lichtquelle 2 gezeigt.Furthermore, in Figure 1 a connector housing 5 for the electrical contacting of the LED light source 2 is also shown.

An den Referenzpositionen 4 wird der Reflektor 1 referenziert, d.h. an der Trägerplatte 3 ausgerichtet und positioniert, wie dies in den Figuren 5 - 8 aus verschiedenen Ansichten dargestellt ist.The reflector 1 is referenced at the reference positions 4, ie aligned and positioned on the carrier plate 3, as shown in FIG Figures 5 - 8 is shown from different views.

Der Reflektor 1 verfügt dabei, wie dies insbesondere auch in den Figuren 3 und 4 gut zu erkennen ist, in der gezeigten Ausführungsform über einen Befestigungssockel 1', der mit den entsprechenden, zu den Referenzpositionen 4a, 4b korrespondierenden Ausformungen, beispielsweise einem Fortsatz 1a, welcher in dem Langloch 4a angeordnet wird, sowie von Sockelflächen bzw. Sockelebenen 1b, welche zur Anlage an den Referenzflächen 4b der Trägerplatte 3 gelangen, ausgestattet ist.The reflector 1 has, as in particular in the Figures 3 and 4 can be clearly seen, in the embodiment shown, via a fastening base 1 ', which is provided with the corresponding formations corresponding to the reference positions 4a, 4b, for example an extension 1a, which is arranged in the elongated hole 4a, as well as from Base surfaces or base planes 1b, which come to rest on the reference surfaces 4b of the carrier plate 3, is equipped.

In den Figuren 5 und 6 ist die Referenzierung des Reflektors bzw. des Reflektorsockels 1' an den Referenzflächen 4b mit seinen Abschnitten 1b gut zu erkennen, während die Figuren 5 und 6 zeigen, wie der Reflektor 1 bzw. der Sockel 1' mit dem Fortsatz 1a in dem Langloch 4a positioniert ist.In the Figures 5 and 6 the referencing of the reflector or the reflector base 1 'on the reference surfaces 4b with its sections 1b can be seen clearly, Figures 5 and 6 show how the reflector 1 or the base 1 'is positioned with the extension 1a in the elongated hole 4a.

Auf diese Weise ist der Reflektor 1 in der gewünschten Position in Bezug auf die auf der Trägerplatte 3 angeordnete LED-Lichtquelle 1 an der Trägerplatte 3 positioniert und wird an der Trägerplatte 3 bzw. in Bezug auf die Trägerplatte 3 befestigt, wie dies weiter unten beschrieben ist.In this way, the reflector 1 is positioned in the desired position in relation to the LED light source 1 arranged on the carrier plate 3 on the carrier plate 3 and is attached to the carrier plate 3 or in relation to the carrier plate 3, as described further below is.

Durch die Referenzpositionen 4a, 4b nimmt der Reflektor 1 die gewünschte Position ein. In dieser Position kann der Reflektor 1 temporärer mit einem Rückstellelement 7, beispielsweise in Form von einer Feder (etwa einer Druckfedern) temporär fixiert werden; das Rückstellelement 7 hält dabei den Reflektor 1 bzw. allgemein den licht formenden Körper solange in seiner Referenzposition (gewünschten Position), bis dieser endgültig fixiert wird.Due to the reference positions 4a, 4b, the reflector 1 assumes the desired position. In this position, the reflector 1 can be temporarily fixed with a restoring element 7, for example in the form of a spring (such as a compression spring); the restoring element 7 holds the reflector 1 or generally the light-shaping body in its reference position (desired position) until it is finally fixed.

Figur 9 zeigt in diesem Zusammenhang ein erfindungsgemäßes Lichtmodul 10. Die Trägerplatte 3 ist an dem Kühlkörper 6 befestigt, beispielsweise mit diesem verklebt. Figure 9 shows in this context a light module 10 according to the invention. The carrier plate 3 is attached to the cooling body 6, for example glued to it.

Der Kühlkörper 6, welcher auch in Figur 2 dargestellt ist, weist zwei Abschnitte 6a, 6a' auf, welche rechtwinkelig zueinander stehen. Die Trägerplatte 3 ist auf einem der beiden Abschnitte 6a angeordnet, beispielsweise mit diesem verklebt. Weiters weist der Kühlkörper 6 einen Anschlagbereich 6b für das Rückstellelement 7 auf, welcher Anschlagbereich 6b beispielsweise einstückig mit den beiden Abschnitten 6a, 6a' ausgebildet ist.The heat sink 6, which is also shown in Figure 2 is shown has two sections 6a, 6a 'which are at right angles to one another. The carrier plate 3 is arranged on one of the two sections 6a, for example glued to it. Furthermore, the heat sink 6 has a stop area 6b for the restoring element 7, which stop area 6b is, for example, formed in one piece with the two sections 6a, 6a '.

Bei einem Positionieren des Reflektors 1 liegt das Rückstellelement 7 an dem Anschlagbereich 6b an und wird zusammengedrückt, d.h. das Rückstellelement 7 ist zwischen dem Abschnitt 6b und dem Befestigungssockel 1' vorgespannt, sodass der Befestigungssockel 1' in die Referenzpositionen 4a, 4b gedrückt wird. Auf diese Weise wird der der Reflektor 1 in dieser Position zumindest vorübergehend gehalten.When the reflector 1 is positioned, the restoring element 7 rests against the stop region 6b and is compressed, ie the restoring element 7 is pretensioned between the section 6b and the fastening base 1 ', so that the fastening base 1' is pressed into the reference positions 4a, 4b. In this way, the reflector 1 is at least temporarily held in this position.

Das Rückstellelement 7 ist vorzugsweise, wie dargestellt, einstückig mit dem Reflektor 1, insbesondere mit dessen Befestigungssockel 1' verbunden.The restoring element 7 is preferably, as shown, connected in one piece with the reflector 1, in particular with its fastening base 1 '.

Zur dauerhaften (gegebenenfalls aber lösbaren) Befestigung des Reflektors 1 ist vorgesehen, dass der Reflektor 1 mit zwei Befestigungselementen 8 an dem Kühlkörper 6 (in dem gezeigten Beispiel an Abschnitt 6a des Kühlkörpers 6, an welchem die Trägerplatte 3 befestigt ist), befestigt wird. Dies ist schematisch in Figur 9 und 10 gezeigt.For permanent (possibly detachable) fastening of the reflector 1, provision is made for the reflector 1 to be fastened with two fastening elements 8 to the heat sink 6 (in the example shown on section 6a of the heat sink 6 to which the carrier plate 3 is fastened). This is schematically in Figures 9 and 10 shown.

Konkret wird dabei der Reflektor 1 mit seinem Befestigungssockel 1' an dem Kühlkörper 6 befestigt, sodass eine stabile Befestigung entsteht.Specifically, the reflector 1 is fastened with its fastening base 1 'to the cooling body 6, so that a stable fastening is created.

Wie in Figur 3 noch zu erkennen ist, verfügt der Reflektor 1 bzw. sein Befestigungssockel 1' über eine erste, hier innere Auflagefläche 1c, mittels welcher der Sockel 1' auf der Platine aufliegt, sowie eine zweite, hier äußere Auflagefläche 1d, mittels welcher der Sockel 1' auf dem Kühlkörper 6, d.h. auf dem Abschnitt 6a des Kühlkörpers 6 aufliegt. Auf diese Weise kann der Abstand der Reflektorfläche zu der zumindest einen Lichtquelle zuverlässig eingestellt werden.As in Figure 3 can still be seen, the reflector 1 or its fastening base 1 'has a first, here inner bearing surface 1c, by means of which the base 1' rests on the board, and a second, here outer bearing surface 1d, by means of which the base 1 ' on the heat sink 6, ie rests on the section 6 a of the heat sink 6. In this way, the distance between the reflector surface and the at least one light source can be set reliably.

Die Befestigungselemente 8 sind beispielsweise als Federn, z.B. als Blechfedern ausgebildet, welche Federn vorzugsweise in Form von Bügelfedern ausgebildet sind. Die Federn werden auf den Kühlkörper 6 und den Befestigungssockel 1' bei dieser Ausführungsform vorzugsweise aufgeklipst, der Sockel 1' weist zusätzlich beispielsweise wie in Figur 9 und 10 gezeigt noch schlitzförmige Öffnungen zum Einhängen der Befestigungselemente 8 auf.The fastening elements 8 are designed, for example, as springs, for example sheet-metal springs, which springs are preferably designed in the form of bow springs. In this embodiment, the springs are preferably clipped onto the heat sink 6 and the fastening base 1 '; the base 1' also has, for example, as in FIG Figures 9 and 10 also shown slot-shaped openings for hanging the fastening elements 8 on.

Das Lichtmodul 10 ist hier der besseren Übersichtlichkeit halber mit einem dezidierten, nur dem gezeigten Lichtmodul 10 zugeordneten Kühlkörper 6 dargestellt. In der Praxis kann aber auch vorgesehen sein, dass ein Kühlkörper für mehrere Lichtmodule vorgesehen ist, sodass also auf einem einzigen Kühlkörper mehrere Trägerplatten mit Lichtquelle und licht formendem Körper angeordnet sind.For the sake of clarity, the light module 10 is shown here with a dedicated heat sink 6 assigned only to the light module 10 shown. In practice, however, it can also be provided that a heat sink is provided for several light modules, so that several carrier plates with a light source and light-shaping body are arranged on a single heat sink.

Die Erfindung wurde obenstehend an Hand eines Reflektors erörtert, bei dem licht formenden Körper kann es sich aber auch um eine Optik, etwa eine Linse, einen Lichtleiter etc. handeln.The invention was discussed above using a reflector, but the light-shaping body can also be an optical system, for example a lens, a light guide, etc.

Claims (13)

  1. Lighting module (10) for a motor vehicle or for a motor vehicle headlamp, the lighting module (10) comprising
    -) a heat sink (6),
    -) a support plate (3) for at least one light source (2),
    -) at least one light source (2) arranged on the support plate (3),
    -) a light-shaping body such as a reflector,
    wherein the support plate (3) is fixed on the heat sink (6),
    wherein the support plate (3) comprises one or more reference positions (4) for referencing the light-shaping body, and wherein
    the light-shaping body comprises a fastening base (1'), said fastening base (1') being configured to being used for referencing the light-shaping body at the at least one reference position (4) of the support plate (3),
    characterised in that
    at least one restoring element (7) is associated with the fastening base (1'), the fastening base (1') being fixable at least temporarily by means of said at least one restoring element (7) in its reference position relative to the support plate (3), wherein the at least one restoring element (7) is biased in the reference position (4) of the fastening base (1') between the fastening base (1') and a stop portion (6b) of the heat sink (6) such that the fastening base (1') is held in its reference position (4) with respect to the support plate (3).
  2. Lighting module according to claim 1, characterised in that the support plate (3) is glued to the heat sink (6).
  3. Lighting module according to claim 1 or 2, characterised in that the at least one light source (2) is a LED light source comprising one or more light-emitting diodes, and that the support plate (3) is a PCB for the at least one LED light source.
  4. Lighting module according to any one of claims 1 to 3, characterised in that at least one, preferably two, fastening elements (8) is/are provided for fastening the fastening base (1') to the heat sink (6).
  5. Lighting module according to claim 4, characterised in that the at least one fastening element (8) is a spring, e.g. a sheet metal spring, which is preferably realized as a bow spring.
  6. Lighting module according to any one of claims 1 to 5, characterised in that the restoring element (7) comprises at least one spring element.
  7. Lighting module according to claim 6, characterised in that the at least one spring element is formed integral with the fastening base (1').
  8. Lighting module according to any one of claims 1 to 7, characterised in that the reference positions (4) are arranged on the support plate (3) with respect to the geometric centre of the at least one light source (2) or to the brightest area of the at least one light source (2).
  9. Lighting module according to any one of claims 1 to 8, characterised in that the one or more reference position(s) (4) is/ are realized as one or more holes, for example elongated holes (4a), and/or as one or more reference edge(s) (4b) preferably running in a straight line.
  10. Lighting module according to any one of claims 1 to 9, characterised in that the reference positions (4) are drilled and/or milled.
  11. Lighting module according to any one of claims 1 to 10, characterised in that the heat sink (6) comprises two portions (6a, 6a') which are preferably perpendicularly to one another, and wherein the support plate (3) is arranged on one of said portions (6a).
  12. Lighting module according to claim 11, characterised in that the stop area (6b) for the restoring element (7) is attached to one of the two portions (6a, 6a'), preferably to both portions (6a, 6a'), for instance realized integral with said portion(s).
  13. Motor Vehicle headlamp comprising at least one lighting module according to any one of the claims 1 to 12.
EP13762368.2A 2012-08-23 2013-08-07 Lighting module for a motor vehicle Active EP2888520B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50335/2012A AT513339B1 (en) 2012-08-23 2012-08-23 Light module for a motor vehicle and motor vehicle headlights
PCT/AT2013/050153 WO2014028955A1 (en) 2012-08-23 2013-08-07 Lighting module for a motor vehicle

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EP2888520A1 EP2888520A1 (en) 2015-07-01
EP2888520B1 true EP2888520B1 (en) 2020-09-30

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US (1) US9500332B2 (en)
EP (1) EP2888520B1 (en)
JP (1) JP6202288B2 (en)
CN (1) CN104541098B (en)
AT (1) AT513339B1 (en)
BR (1) BR112014031642A2 (en)
IN (1) IN2015MN00395A (en)
MX (1) MX343277B (en)
WO (1) WO2014028955A1 (en)

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KR101962322B1 (en) 2016-01-12 2019-07-17 루미리즈 홀딩 비.브이. Lighting device for precise positioning of optical elements
DE102016108260A1 (en) * 2016-05-04 2017-11-09 Automotive Lighting Reutlingen Gmbh Method for arranging a circuit carrier and device for arranging a circuit carrier
FR3086727A1 (en) 2018-09-27 2020-04-03 Valeo Vision LIGHT MODULE WITH LIGHT PLATE FIXED WITH SPRING CLAMPS
DE102020108894A1 (en) * 2020-03-31 2021-09-30 HELLA GmbH & Co. KGaA Light module, headlight, motor vehicle and method for producing the light module
FR3118656B1 (en) * 2021-01-05 2023-05-12 Psa Automobiles Sa Optical group for motor vehicle headlight optical module
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JP4640962B2 (en) * 2005-07-29 2011-03-02 株式会社小糸製作所 Vehicle headlamp
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BR112014031642A2 (en) 2017-06-27
CN104541098B (en) 2017-07-04
MX2015002314A (en) 2015-06-23
WO2014028955A1 (en) 2014-02-27
AT513339A1 (en) 2014-03-15
EP2888520A1 (en) 2015-07-01
JP2015529952A (en) 2015-10-08
CN104541098A (en) 2015-04-22
AT513339B1 (en) 2015-02-15
IN2015MN00395A (en) 2015-09-04
US20150219297A1 (en) 2015-08-06
MX343277B (en) 2016-10-28
JP6202288B2 (en) 2017-09-27
US9500332B2 (en) 2016-11-22

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