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EP2327926B2 - Light unit for vehicles and mounting method - Google Patents
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EP2327926B2 - Light unit for vehicles and mounting method - Google Patents

Light unit for vehicles and mounting method Download PDF

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Publication number
EP2327926B2
EP2327926B2 EP09177013.1A EP09177013A EP2327926B2 EP 2327926 B2 EP2327926 B2 EP 2327926B2 EP 09177013 A EP09177013 A EP 09177013A EP 2327926 B2 EP2327926 B2 EP 2327926B2
Authority
EP
European Patent Office
Prior art keywords
spacer
light source
light unit
unit according
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
EP09177013.1A
Other languages
German (de)
French (fr)
Other versions
EP2327926A1 (en
EP2327926B1 (en
Inventor
Konrad Schürhoff
Heinz-Uwe Spork
Jürgen Schulte
Hans-Gerd Hammelbeck
Christian Erdmann
Jason Franz Endress
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.)
Hella GmbH and Co KGaA
Original Assignee
Hella KGaA Huek and Co
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
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Application filed by Hella KGaA Huek and Co filed Critical Hella KGaA Huek and Co
Priority to EP09177013.1A priority Critical patent/EP2327926B2/en
Publication of EP2327926A1 publication Critical patent/EP2327926A1/en
Application granted granted Critical
Publication of EP2327926B1 publication Critical patent/EP2327926B1/en
Publication of EP2327926B2 publication Critical patent/EP2327926B2/en
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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
    • F21S41/20Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/29Attachment thereof
    • F21S41/295Attachment thereof specially adapted to projection lenses
    • 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
    • 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]
    • F21S41/143Light emitting diodes [LED] the main emission direction of the LED being parallel 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]
    • F21S41/151Light emitting diodes [LED] arranged in one or more lines
    • 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
    • F21S41/20Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25Projection lenses
    • 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
    • F21S41/20Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/29Attachment 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
    • 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

  • a lighting unit for vehicles in which an optical element is held on a reflector via support elements.
  • the support element is integrally connected to the optical element and protrudes in the axial direction of the same.
  • the support member forms a spacer to the reflector. A spring action does not have this support element.

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)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Description

Die Erfindung betrifft eine Leuchteinheit für Fahrzeuge nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a lighting unit for vehicles according to the preamble of patent claim 1.

Aus der DE 10 2008 013 921 A1 ist eine Leuchteinheit für Fahrzeuge bekannt, die zum einen einen als Kühlkörper ausgebildeten ersten Körper aufweist, an dessen Flachseite eine Lichtquelle (LED-Lichtquelle) befestigt ist. Zum anderen weist die Leuchteinheit einen zweiten Körper auf, an dem ein Optikelement (Linse) gehaltert ist. Zum Verbringen des ersten Körpers in eine vorgegebene Relativposition zu dem zweiten Körper sind als Befestigungsmittel mit jeweils Bohrungen versehene zylinderförmige Befestigungsteile vorgesehen, in die Bolzen einsetzbar sind, so dass das in einer Bohrung des zweiten Körpers befindliche Befestigungsteil zwischen dem ersten Körper und dem zweiten Körper so aufgeweitet ist, dass der erste Körper in vorgesehen Relativposition zu dem zweiten Körper klemmend gehalten ist.From the DE 10 2008 013 921 A1 a lighting unit for vehicles is known, on the one hand has a designed as a heat sink first body, on the flat side of a light source (LED light source) is attached. On the other hand, the lighting unit has a second body on which an optical element (lens) is mounted. To bring the first body in a predetermined relative position to the second body are provided as fastening means provided with respective holes cylindrical fastening parts are inserted into the bolt, so that the present in a bore of the second body fastening part between the first body and the second body so is widened, that the first body is held clamped in provided relative position to the second body.

Bei Leuchteinheiten, die aus mehreren jeweils eine Lichtquelle und ein Optikelement aufweisenden Lichtmodulen bestehen, ist die Justierung relativ aufwendig. Denn für jedes Lichtmodul müsste gesondert die Positionierung und Fixierung der optischen Bauteile erfolgen.In lighting units, which consist of several each having a light source and an optical element having light modules, the adjustment is relatively expensive. Because for each light module would be done separately, the positioning and fixing of the optical components.

Aus der DE 10 2004 018 957 A1 ist eine Leuchteinheit für Fahrzeuge bekannt, bei der ein Optikelement über Stützelemente an einem Reflektor gehalten ist. Das Stützelement ist einstückig mit dem Optikelement verbunden und ragt in axialer Richtung von demselben ab. Das Stützelement bildet ein Distanzstück zu dem Reflektor. Eine Federwirkung weist dieses Stützelement nicht auf.From the DE 10 2004 018 957 A1 is a lighting unit for vehicles is known in which an optical element is held on a reflector via support elements. The support element is integrally connected to the optical element and protrudes in the axial direction of the same. The support member forms a spacer to the reflector. A spring action does not have this support element.

Aus der DE 570 390 ist eine Leuchteinheit für Fahrzeuge mit einer Lichtquelle bekannt, in der ein Distanzstück zwischen einem Reflektor und einem Optikelement der Leuchteinheit angeordnet ist. Das Distanzstück ist als eine Schraubenfeder ausgebildet, die eine federnde Abstützung des Optikelementes an einem Rand des Reflektors ermöglicht.From the DE 570 390 a light unit for vehicles with a light source is known in which a spacer between a reflector and an optical element of the light unit is arranged. The spacer is designed as a helical spring, which allows a resilient support of the optical element at an edge of the reflector.

Aufgabe der vorliegenden Erfindung ist es daher, eine Leuchteinheit für Fahrzeuge derart weiterzubilden, dass auf einfache und kostengünstige Weise eine präzise Justierung bzw. Befestigung von optischen Bauteilen gewährleistet ist.Object of the present invention is therefore to develop a lighting unit for vehicles such that in a simple and cost-effective manner a precise adjustment or attachment of optical components is guaranteed.

Zur Lösung der Aufgabe weist die Erfindung die Merkmale des Patentanspruchs 1 auf.To achieve the object, the invention has the features of claim 1.

Nach der Erfindung ist als Befestigungs- und/oder Justiermittel ein Distanzstück vorgesehen, das zwischen einem die Lichtquelle tragenden ersten Körper und einem ein Optikelement haltenden zweiten Körper angeordnet ist. Das Distanzstück weist zum einen eine Freilassung auf, so dass das von der Lichtquelle abgestrahlte in Lichtabstrahlrichtung durch das Distanzstück hindurch zu dem Optikelement hindurchtreten kann. Zum anderen weist das Distanzstück ein Federelement auf, so dass mit Zusammensetzen des ersten und zweiten Körpers eine vorgegebene Relativposition erreicht wird. Nachdem der erste Körper und der zweite Körper in dieser vorgegebenen Relativposition fixiert worden sind, kann die Leuchteinheit in einer vorgesehenen Karosserieöffnung des Fahrzeugs verbaut werden. Eine Nachjustierung ist nicht mehr erforderlich. Grundgedanke der Erfindung ist es, die Justierung der optischen Bauelemente selbsttätig bei der Montage des ersten und zweiten Körpers vorzunehmen. Hierbei bewirkt das Distanzstück einen Ausgleich von Maßtoleranzen der zu montierenden Bauteile. Die Erfindung eignet sich vorzugsweise für Leuchteinheiten, die aus einer Mehrzahl von Lichtquellen und Optikelementen als optische Bauteile bestehen, da in einem Schritt zum einen die Justierung und zum anderen die Fixierung erfolgen kann. Nach der Erfindung weist das Distanzstück mindestens ein Rastelement auf, so dass das Distanzstück formschlüssig und lösbar mit dem ersten Körper verbindbar ist. Vorteilhaft kann hierdurch das Distanzstück relativ einfach und in einer definierten Lage zu dem ersten Körper verbracht werden. Die endgültige Verbindung bzw. Justierung erfolgt durch Verbinden des ersten Körpers mit dem zweiten Körper in einem weiteren Montageschritt.According to the invention, a spacer is provided as fastening and / or adjusting means which is arranged between a first body carrying the light source and a second body holding an optical element. The spacer has a release, on the one hand, so that the light emitted by the light source can pass through the spacer in the light emission direction to the optical element. On the other hand, the spacer has a spring element, so that when assembling the first and second body, a predetermined relative position is achieved. After the first body and the second body have been fixed in this predetermined relative position, the lighting unit can be installed in an intended body opening of the vehicle. A readjustment is no longer necessary. The basic idea of the invention is to carry out the adjustment of the optical components automatically during the assembly of the first and second body. Here, the spacer causes a compensation of dimensional tolerances of the components to be mounted. The invention is preferably suitable for light units, which consist of a plurality of light sources and optical elements as optical components, since in one step the adjustment and on the other the fixation can take place. According to the invention, the spacer has at least one locking element, so that the spacer is positively and releasably connectable to the first body. Advantageously, as a result, the spacer can be relatively easily and spent in a defined position to the first body. The final connection or adjustment takes place by connecting the first body to the second body in a further assembly step.

Nach einer Weiterbildung der Erfindung besteht das Distanzstück aus einem Kunststoffmaterial, das eine mechanische Langzeitdehnung von größer als 1 % aufweist. Vorteilhaft können hierdurch Maßtoleranzen der Bauteile ausgeglichen werden. Vorzugsweise besteht das Distanzstück aus einem bedampfbaren und/oder polierbaren Material, so dass es eine spiegelnde Fläche darstellen kann. Beispielsweise kann das Distanzstück als eine die LED-Leiterplatte abdeckende Sichtblende ausgebildet sein. Nach einer Weiterbildung der Erfindung kann die Freilassung des Distanzstückes durch einen sich in Richtung der Lichtquelle verjüngenden Schrägflächenrahmen gebildet sein, so dass zum einen eine Erhöhung des von der Leuchteinheit abgegebenen Lichtstroms und zum anderen eine Reduzierung der Blendung eintreten kann.According to a development of the invention, the spacer consists of a plastic material which has a mechanical long-term elongation of greater than 1%. Advantageously, this allows dimensional tolerances of the components to be compensated. Preferably, the spacer is made of a heatable and / or polishable material, so that it can represent a reflective surface. For example, the spacer may be formed as a screen covering the LED circuit board. According to a development of the invention, the release of the spacer may be formed by a tapered in the direction of the light source inclined surface frame, so that on the one hand can increase the output of the light unit luminous flux and on the other hand, a reduction of glare.

Nach einer Weiterbildung der Erfindung werden vorzugsweise mehrere von durch den ersten Körper und die Lichtquelle gebildeten Baueinheiten mittels eines dritten Körpers an dem zweiten Körper befestigt. Durch das aufgesteckte Distanzstück wird selbsttätig die vorgesehen Relativlage der ersten Körpers zum dem zweiten Körper bzw. zu dem Optikelement eingenommen. Die lagerichtige Positionierung und Fixierung vorzugsweise einer Mehrzahl von Baueinheiten erfolgt somit in einem einzigen Montageschritt, was den Montageaufwand wesentlich reduziert.According to a development of the invention, preferably a plurality of units formed by the first body and the light source are fastened to the second body by means of a third body. By the plugged spacer, the provided relative position of the first body is automatically taken to the second body or to the optical element. The correct position positioning and fixing preferably a plurality of structural units thus takes place in a single assembly step, which significantly reduces the assembly effort.

Nach einer Weiterbildung der Erfindung ist der zweite Körper und/oder der dritte Körper aus einem hochsteifen und hochtemperaturbeständigen Duroplastmaterial hergestellt. Vorteilhaft weisen diese Körper ein verbessertes thermisches Ausdehnungsverhalten auf, so dass die Einhaltung der lichttechnischen Parameter, insbesondere die Einhaltung der Hell/Dunkel-Grenze, langzeitstabil gewährleistet ist.According to a development of the invention, the second body and / or the third body made of a highly rigid and high temperature resistant thermoset material. Advantageously, these bodies have an improved thermal expansion behavior, so that the maintenance of the photometric parameters, in particular the observance of the bright / dark boundary, long-term stability is guaranteed.

Weitere Vorteile der Erfindung ergeben sich aus den weiteren Unteransprüchen.Further advantages of the invention will become apparent from the further subclaims.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnungen näher erläutert.An embodiment of the invention will be explained in more detail with reference to the drawings.

Es zeigen:

Fig. 1
eine Explosionsdarstellung einer Leuchteinheit,
Fig. 2
eine perspektivische Vorderansicht eines Halterahmens der Leuchteinheit,
Fig. 3
eine perspektivische Vorderansicht eines Distanzstücks nach einer ersten Ausführungsform,
Fig. 4a
eine perspektivische Vorderansicht eines Distanzstücks nach einer zweiten Ausführungsform,
Fig. 4b
einen Längsschnitt durch das Distanzstück gemäß Figur 4a,
Fig. 5
eine perspektivische Vorderansicht eines Distanzstücks nach einer dritten Ausführungsform,
Fig. 6
eine Ansicht eines Optikelementes,
Fig. 7a
eine Explosionsdarstellung einer Baueinheit, die sich aus einem Distanzstück, einer Leiterplatte mit LED-Lichtquelle und einem Kühlkörper zusammensetzt,
Fig. 7b
eine Ansicht der zusammengesetzten Baueinheit gemäß Figur 7a,
Fig. 8a
eine Explosionsdarstellung einer Baueinheit nach einer alternativen Ausführungsform, die sich aus einem Distanzstück, einer LED-Leiterplatte sowie einem Reflektor zusammensetzt und
Fig. 8b
eine Ansicht einer zusammengesetzten Baueinheit gemäß Figur 8a.
Show it:
Fig. 1
an exploded view of a lighting unit,
Fig. 2
a perspective front view of a holding frame of the lighting unit,
Fig. 3
a front perspective view of a spacer according to a first embodiment,
Fig. 4a
a front perspective view of a spacer according to a second embodiment,
Fig. 4b
a longitudinal section through the spacer according to FIG. 4a .
Fig. 5
a front perspective view of a spacer according to a third embodiment,
Fig. 6
a view of an optical element,
Fig. 7a
an exploded view of a unit, which consists of a spacer, a printed circuit board with LED light source and a heat sink,
Fig. 7b
a view of the assembled unit according to Figure 7a .
Fig. 8a
an exploded view of a structural unit according to an alternative embodiment, which is composed of a spacer, an LED circuit board and a reflector, and
Fig. 8b
a view of a composite unit according to FIG. 8a ,

Eine Leuchteinheit 1 für Fahrzeuge dient beispielsweise zur Erzeugung einer Abblendlichtfunktion und ist in einem Bugbereich eines Kraftfahrzeugs angeordnet. Die Leuchteinheit 1 kann als eine langgestreckte Leuchteinheit in einem Scheinwerfer des Fahrzeugs integriert sein.A lighting unit 1 for vehicles, for example, serves to generate a low-beam function and is arranged in a bow region of a motor vehicle. The lighting unit 1 can be integrated as an elongate lighting unit in a headlight of the vehicle.

Wie aus Figur 1 zu ersehen ist, besteht die Leuchteinheit 1 im Wesentlichen aus einer Mehrzahl von ersten Baueinheiten 2, die jeweils aus einem ersten Körper (Reflektorkörper 3, einem Kühlkörper 3'), einer mit einer LED-Lichtquelle 4 bestückten Leiterplatte 5 und einem Distanzstück 6 gebildet sind, einer Mehrzahl vor der Baueinheit 2 zugeordneten Optikelementen 7 sowie einem einstückigen zweiten Körper 8 sowie einem einstückigen dritten Körper 9.How out FIG. 1 can be seen, the lighting unit 1 consists essentially of a plurality of first units 2, each of a first body (reflector body 3, a heat sink 3 '), one equipped with an LED light source 4 printed circuit board 5 and a spacer 6 are formed , a plurality of optical elements 7 assigned in front of the structural unit 2 and an integral second body 8 as well as an integral third body 9.

Der zweite Körper 8 ist als ein langgestreckter Halterahmen 8 ausgebildet, der eine Mehrzahl von Öffnungsaufnahmen 10 zur jeweiligen Aufnahme der Optikelemente 7 von einer in Lichtabstrahlrichtung 11 hinter dem Halterahmen 8 angeordneten Seite. Wie besser aus Figur 2 zu ersehen ist, weist der Halterahmen 8 eine Mehrzahl von Befestigungsdomen 12 auf, so dass er mittels Schrauben 13 lösbar mit dem dritten Körper 9 verbindbar ist.The second body 8 is designed as an elongate holding frame 8, which has a plurality of opening receptacles 10 for respectively receiving the optical elements 7 from a side arranged in the light emission direction 11 behind the holding frame 8. How better FIG. 2 can be seen, the holding frame 8 has a plurality of Befestigungsdomen 12, so that it is releasably connected by means of screws 13 with the third body 9.

Der dritte Körper 9 ist als ein langgestreckter Tragrahmen ausgebildet, dessen Kontur im Wesentlichen der Kontur des Halterahmens 8 entspricht. Er weist eine Mehrzahl von Öffnungsaufnahmen 14 zur Aufnahme eines rückwärtigen Teils der Baueinheiten 2 auf.The third body 9 is formed as an elongated support frame whose contour corresponds substantially to the contour of the support frame 8. It has a plurality of opening receptacles 14 for receiving a rear part of the units 2.

Da die Leuchteinheit 1 ein Abblendlicht erzeugt, das sich aus unterschiedlichen Teillichtbildern zusammensetzt, sind zum einen unterschiedliche Typen von Baueinheiten 2 und zum anderen unterschiedliche Typen bzw. Dimensionen von Optikelementen (Linsen 7) vorgesehen. In Figur 3 ist ein erstes Distanzstück 6 dargestellt, das rastend mit einem Reflektorkörper 3 verbindbar ist, siehe Figur 8a und Figur 8b. Das Distanzstück 6 weist ein rahmenförmiges Basisteil 15 auf, von dem zu einer Rückseite hin zum einen an gegenüberliegenden Seiten Federelemente 16 und zum anderen an gegenüberliegenden Seiten bzw. Rändern Rastelemente 17 abragen. Die Rastelemente 17 sind derart ausgebildet, dass das Distanzstück 6 rastend mit dem Reflektorkörper 3, auf dem sich bereits die Leiterplatte 5 mit der LED-Lichtquelle 4 befindet, verbunden werden kann. Die LED-Lichtquelle 4 ist somit fest an dem Reflektorkörper 3 gehalten. Die Federelemente 16 sind derart ausgebildet, dass sie sich federnd gegen den Reflektorkörper 3 abstützen. Eine in Lichtabstrahlrichtung 11 vordere Randfläche 18 des Distanzstücks 6 dient als Anlagefläche für das Optikelement 7 bzw. den Halterahmen 8 im montierten Zustand. Die Randfläche 18 begrenzt eine Öffnung 18' des Basisteils 15, durch die das von der LED-Lichtquelle 4 abgestrahlte Licht in Richtung der Linse 7 hindurchtreten kann.Since the lighting unit 1 generates a low beam, which is composed of different partial light images, on the one hand different types of structural units 2 and on the other different types or dimensions of optical elements (lenses 7) are provided. In FIG. 3 a first spacer 6 is shown, which is latchingly connectable to a reflector body 3, see FIG. 8a and FIG. 8b , The spacer 6 has a frame-shaped base part 15, protrude from which to a rear side on the one hand on opposite sides spring elements 16 and on the other on opposite sides or edges locking elements 17. The latching elements 17 are designed such that the spacer 6 can latching with the reflector body 3, on which the circuit board 5 is already located with the LED light source 4, can be connected. The LED light source 4 is thus firmly held on the reflector body 3. The spring elements 16 are designed such that they are resiliently supported against the reflector body 3. A front edge surface 18 of the spacer 6 in the light emission direction 11 serves as a contact surface for the optical element 7 or the holding frame 8 in the mounted state. The edge surface 18 delimits an opening 18 'of the base part 15, through which the light emitted by the LED light source 4 can pass in the direction of the lens 7.

Im montierten Zustand weist dann das Optikelement 7 eine definierte Relativlage zu der LED-Lichtquelle 4 bzw. dem Reflektorkörper 3 auf, wobei das Distanzstück 6 vorhandene Toleranzabweichungen mittels des Federelements 16 ausgleichen kann. Die so gebildete Baueinheit 2 dient vorzugsweise zur Ausleuchtung eines Fernfeldes.In the assembled state, then the optical element 7 has a defined relative position to the LED light source 4 and the reflector body 3, wherein the spacer 6 can compensate for existing tolerance deviations by means of the spring element 16. The constructional unit 2 thus formed is preferably used for illuminating a far field.

Gemäß den Figuren 4a und 4b ist ein weiteres Distanzstück 6' vorgesehen, das ausgehend von einem Basisteil 19 auf der einen Seite an gegenüberliegenden Rändern abragende Rastelemente 20 zur Verbindung mit dem Kühlkörper 3' einerseits und an unterschiedlichen Randseiten abragende Federelemente 21 zur Abstützung an dem Kühlkörper 3' andererseits aufweist. Auf einer gegenüberliegenden Seite des flächigen Basisteils 19 ist ein weiteres als Federzunge ausgebildetes Federelement 22 angeordnet, das in der Montageposition gegen die Linse 7 drückt. Dieses Distanzstück 6' bildet zusammen mit der LED-Lichtquelle 4 und der Leiterplatte 5 sowie dem Kühlkörper 3' eine weitere Baueinheit 2, die in Verbindung mit einer entsprechenden Linse 7 zur Erzeugung einer Basislichtverteilung dient, siehe Figuren 7a und 7b. Das Basisteil 19 weist in einem mittleren Bereich eine Freilassung 23 auf, in der in der montierten Position die LED-Lichtquelle 4 positioniert ist. Die Freilassung 23 wird durch einen Schrägflächenrahmen 24 des Basisteils 19 gebildet, der in Richtung der LED-Lichtquelle 4 verjüngend ausgebildet ist. Da das Distanzstück 6' eine verspiegelte Oberfläche aufweist, kann insbesondere der Schrägflächenrahmen 24 zur Erhöhung des austretenden Lichtstromes beitragen.According to the FIGS. 4a and 4b a further spacer 6 'is provided which, starting from a base part 19 on one side at opposite edges projecting locking elements 20 for connection to the heat sink 3' on the one hand and on different edge sides protruding spring elements 21 for support on the heat sink 3 'on the other. On an opposite side of the flat base member 19 is another arranged as a spring tongue spring element 22 is arranged, which presses in the mounting position against the lens 7. This spacer 6 ', together with the LED light source 4 and the circuit board 5 and the heat sink 3', a further unit 2, which serves in conjunction with a corresponding lens 7 to produce a basic light distribution, see FIGS. 7a and 7b , The base part 19 has a release 23 in a central region in which the LED light source 4 is positioned in the mounted position. The release 23 is formed by an inclined surface frame 24 of the base part 19, which is tapered in the direction of the LED light source 4. Since the spacer 6 'has a mirrored surface, in particular the inclined surface frame 24 can contribute to increasing the outgoing luminous flux.

Wie aus den Figuren 7a und 7b zu ersehen ist, wird die Baueinheit 2 enthaltend das Distanzstück 6' dadurch gebildet, dass in einem ersten Schritt die mit der LED-Lichtquelle 4 bestückte Leiterplatte 5 durch Verschraubung 25 an dem Kühlkörper 3' befestigt wird. In einem weiteren Schritt wird dann das Distanzstück 6' unter Verrastung an Randseiten des Kühlkörpers 3' an demselben lösbar befestigt.Like from the FIGS. 7a and 7b can be seen, the assembly 2 containing the spacer 6 'formed by the fact that in a first step, the equipped with the LED light source 4 printed circuit board 5 is fastened by screwing 25 on the heat sink 3'. In a further step, the spacer 6 'is then detachably fastened to the edge side of the heat sink 3' at the same.

Wie aus Figur 5 zu ersehen ist, ist ein weiteres Distanzstück 6" vorgesehen, das sich von dem Distanzstück 6' gemäß der Figuren 4a und 4b dadurch unterscheidet, dass es kürzere Rastelemente 20', kürzere Federelemente 21', 22' aufweist. Ein Basisteil 19' des Distanzstücks 6" weist in Übereinstimmung zu dem Distanzstück 6' eine Freilassung 23' mit einem Schrägflächenrahmen 24' auf. Dieses Distanzstück 6" ist für Baueinheiten 2 vorgesehen zur Erzeugung einer Vorfeldlichtverteilung.How out FIG. 5 can be seen, a further spacer 6 "is provided, extending from the spacer 6 'according to the FIGS. 4a and 4b characterized in that it has shorter locking elements 20 ', shorter spring elements 21', 22 '. A base part 19 'of the spacer 6 "has, in accordance with the spacer 6', a release 23 'with an inclined surface frame 24' .This spacer 6" is intended for assemblies 2 for generating an apron light distribution.

Zur Montage der Leuchteinheit 1 werden in einem Schritt die Linsen 7 in den entsprechenden Öffnungsaufnahmen 10 des Halterahmens 8 positioniert. In einem weiteren Schritt werden die Leiterplatte 5 zusammen mit der LED-Lichtquelle 4 auf dem Reflektorkörper 3 bzw. dem Kühlkörper 3' positioniert und danach gleichzeitig oder danach das entsprechende Distanzstück 6, 6', 6" durch Rastung mit dem entsprechenden Reflektorkörper 3 bzw. Kühlkörper 3' rastend verbunden. In einem weiteren Montageschritt werden dann die einzelnen Baueinheiten aufgeklipst zur Bildung der Baueinheit 2. In einem weiteren Schritt werden dann die Baueinheiten 2 unter Anlage eines vorderen Teils der Distanzstück 6, 6', 6" an der Linse 7 bzw. dem Halterahmen 8 an demselben positioniert. In einem abschließenden Montageschritt wird dann der Tragrahmen 9 rückseitig auf die Baueinheiten 2 bzw. des Halterahmens 8 aufgesetzt und durch die Schrauben 13 mit dem Halterahmen 8 fixiert. Hierbei drücken die Federelemente 16, 21, 21', 22, 22' der Distanzstücke 6, 6', 6" gegen den Reflektorkörper 3 bzw. Kühlkörper 3' einerseits und gegen die Linse 7 bzw. den Halterahmen 8 andererseits, so dass die LED-Lichtquelle 4 bzw. der Reflektorkörper 3 eine definierte Relativposition zu der Linse 7 bzw. dem Halterahmen 8 einnimmt.For mounting the lighting unit 1, the lenses 7 are positioned in the corresponding opening receptacles 10 of the holding frame 8 in one step. In a further step, the circuit board 5 are positioned together with the LED light source 4 on the reflector body 3 and the heat sink 3 'and then simultaneously or thereafter the corresponding spacer 6, 6', 6 "by latching with the corresponding reflector body 3 or In a further step, the units are then clipped to form the unit 2. In a further step, the units 2 are then under attachment of a front part of the spacer 6, 6 ', 6 "on the lens 7 and The support frame 8 is positioned at the same. In a final assembly step, the support frame 9 is then placed on the back of the units 2 and the support frame 8 and fixed by the screws 13 with the support frame 8. Here, the spring elements 16, 21, 21 ', 22, 22' of the spacers 6, 6 ', 6 "press against the reflector body 3 or heat sink 3' on the one hand and against the lens 7 or the holding frame 8 on the other hand, so that the LED Light source 4 and the reflector body 3 assumes a defined relative position to the lens 7 and the holding frame 8.

Die Distanzstücke 6, 6', 6" sind aus einem Kunststoffmaterial hergestellt, das eine Langzeitdehnung von größer als 1 % aufweist. Die Distanzstücke 6, 6" bestehen aus einem PEl-Material, das mit Aluminium bedampfbar und/oder polierbar ist und somit als Sichtblende für die Leiterplatte 5 dienen kann.The spacers 6, 6 ', 6 "are made of a plastic material which has a long-term elongation of greater than 1% .The spacers 6, 6" consist of a PEI material which can be vapor-deposited and / or polished with aluminum and thus as Can serve screen for the circuit board 5.

Der Halterahmen 8 und der Tragrahmen 9 bestehen aus einem hochsteifen und hochtemperaturbeständigen Duroplastmaterial, insbesondere aus dem Duroplast Tetradur TD320-025, das schwarz eingefärbt ist und mit einer transparenten Lackierung versehen ist. Vorteilhaft weist dieses Material keine Einfallstellen auf und wirkt schwarz hochglänzend.The support frame 8 and the support frame 9 are made of a highly rigid and high temperature resistant thermoset material, in particular from the duroplastic Tetradur TD320-025, which is dyed black and is provided with a transparent finish. Advantageously, this material has no sink marks and black high gloss.

Dadurch, dass die Federelemente 16, 21, 21' der Distanzstücke 6, 6', 6" aus Kunststoffmaterial und nicht aus Metallmaterial bestehen, kann bei der Linse 7 auf eine Kantenanfasung verzichtet werden. Ein Kantenbruch der Linsen 7 kann hierdurch auf einfache Weise verhindert werden.Because the spring elements 16, 21, 21 'of the spacers 6, 6', 6 "consist of plastic material and not of metal material, edge chamfering can be dispensed with in the case of the lens 7. An edge breakage of the lenses 7 can thereby be prevented in a simple manner become.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Leuchteinheitlight unit
22
erste Baueinheitfirst building unit
3, 3'3, 3 '
Reflektorkörper, KühlkörperReflector body, heat sink
44
LED-LichtquelleLED light source
55
Leiterplattecircuit board
6, 6', 6"6, 6 ', 6 "
Distanzstückspacer
77
Optikelementoptical element
88th
zweiter Körper/Halterahmensecond body / support frame
99
dritter Körper/Tragrahmenthird body / support frame
1010
Öffnungsaufnahme (9)Opening reception (9)
1111
Lichtabstrahlrichtunglight emission
1212
Befestigungsdomfixing dome
1313
Schraubenscrew
1414
Öffnungsaufnahme (9)Opening reception (9)
1515
Basisteil (6)Base part (6)
1616
Federelementspring element
1717
Rastelementlocking element
18, 18'18, 18 '
Randfläche (6)Edge surface (6)
19, 1919, 19
Basisteilbase
20, 20'20, 20 '
Rastelementlocking element
21, 21'21, 21 '
Federelementspring element
22, 22'22, 22 '
Federelementspring element
23, 23'23, 23 '
Freilassungrelease
24, 24'24, 24 '
SchrägflächenrahmenSloping surface frame
2525
Verschraubungscrew

Claims (8)

  1. Light unit for vehicles with a light source (4) being fastened to a first body (3, 3'), having an optic element (7) arranged in light beam direction (11) in front of the light source (4) and being held on a second body (8), the light source (4) being arranged adjusted relative to the optic element (7) with fastening means (6, 6', 6"), a spacer (6, 6', 6") being planned as fastening means and extending between the first body (3, 3') and the second body (8) while forming a cutout (18', 23, 23') for the light source (4), and having a spring element (16, 21, 21', 22, 22') for the resting on the first body (3, 3') or the optic element (7), so that the optic element (7) is held in a given relative position to the first body (3, 3') and the light source (4) by assembling the first and second body (3, 3'; 8), characterized in that the spacer (6, 6', 6") has at least one snapfastening element (17, 20, 20'), such that the spacer (6, 6', 6") can be connected to the first body (3, 3') by snap-fastening.
  2. Light unit according to Claim 1, characterized in that the spring elements (16, 21, 21', 22, 22') and/or the snap-fastening elements (17, 20, 20') protrude from opposing edges of a base part (15, 19, 19') of the spacer (6, 6', 6").
  3. Light unit according to Claim 1 or 2, characterized in that the cutout (18', 23, 23') is limited in direction of the light source (4) by a frame with beveled sides (24, 24').
  4. Light unit according to one of the Claims 1 to 3, characterized in that the spacer (6, 6', 6") is made from a material having a long-term elongation of larger than 1%.
  5. Light unit according to one of the Claims 1 to 4, characterized in that the spacer (6, 6', 6") is made from a material which can be metalized and/ or polished.
  6. Light unit according to one of the Claims 1 to 5, characterized in that the first body (3, 3'), the light source (4) and the spacer (6, 6', 6") form a sub-assembly (2), which is fastened to the second body (8) by means of a third body (9) arranged behind the sub-assembly (2) in the light-beam direction (11).
  7. Light unit according to one of the Claims 1 to 6, characterized in that the second body (8) is embodied as an elongated retention frame and the third body (9) as an elongated carrier frame.
  8. Light unit according to Claim 7, characterized in that the second body (8) and/ or the third body (9) is made from a highly rigid and highly temperature-resistant thermosetting material.
EP09177013.1A 2009-11-25 2009-11-25 Light unit for vehicles and mounting method Active EP2327926B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09177013.1A EP2327926B2 (en) 2009-11-25 2009-11-25 Light unit for vehicles and mounting method

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Application Number Priority Date Filing Date Title
EP09177013.1A EP2327926B2 (en) 2009-11-25 2009-11-25 Light unit for vehicles and mounting method

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EP2327926A1 EP2327926A1 (en) 2011-06-01
EP2327926B1 EP2327926B1 (en) 2013-12-25
EP2327926B2 true EP2327926B2 (en) 2016-12-14

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DE102013108746A1 (en) * 2013-08-13 2015-02-19 Hella Kgaa Hueck & Co. Projection module for a headlight of a vehicle
AT514705B1 (en) * 2013-10-28 2015-03-15 Zizala Lichtsysteme Gmbh Mounting device for an optical body for a motor vehicle headlight
DE102015120800A1 (en) 2015-12-01 2017-06-01 Hella Kgaa Hueck & Co. Light module with an improved structure
AT518266B1 (en) * 2016-02-24 2017-09-15 Zkw Group Gmbh Mounting device for an electronic component
DE102018107213B4 (en) 2018-03-27 2025-05-22 HELLA GmbH & Co. KGaA Lighting device for vehicles
DE102018131027A1 (en) 2018-12-05 2020-06-10 HELLA GmbH & Co. KGaA Lighting device for vehicles
DE102019106504A1 (en) * 2019-03-14 2020-09-17 HELLA GmbH & Co. KGaA Light module of a light unit of a vehicle and light unit
DE102019106492A1 (en) * 2019-03-14 2020-09-17 HELLA GmbH & Co. KGaA Holding device of a light module of a light unit, light module and light unit of a vehicle

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FR2687762A1 (en) 1992-02-24 1993-08-27 Valeo Vision Headlamp with lens, equipped with improved lens mounting means
EP1684007B1 (en) 2005-01-20 2008-04-23 Hella KG Hueck & Co. Vehicle headlamp projector
FR2889290A1 (en) 2005-07-29 2007-02-02 Koito Mfg Co Ltd Vehicle headlamp for forming low-beam light distribution pattern, has light source units each with resin shade fastened to metal bracket by fastening screw, where shade has rear end part made of metal and fastening shade to bracket
FR2907196A1 (en) 2006-10-17 2008-04-18 Valeo Vision Sa Lens fixation device e.g. signaling lamp, of motor vehicle, has group of support units angularly offset with respect to support units of another group against headlight axis, where units are respectively located against lens and support
DE102006059902A1 (en) 2006-12-19 2008-06-26 Hella Kgaa Hueck & Co. Headlamp for motor vehicle has first unit with light source, supporting plate, cooling element, guide element fixed to housing and second unit with light output coupling element, cover frame module positioned on housing and/or light panel

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