EP2473775B1 - Motor vehicle front light having light-emitting diodes (leds) - Google Patents

Motor vehicle front light having light-emitting diodes (leds) Download PDF

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Publication number
EP2473775B1
EP2473775B1 EP10751555.3A EP10751555A EP2473775B1 EP 2473775 B1 EP2473775 B1 EP 2473775B1 EP 10751555 A EP10751555 A EP 10751555A EP 2473775 B1 EP2473775 B1 EP 2473775B1
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EP
European Patent Office
Prior art keywords
light
vehicle lighting
lenses
led
accordance
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Not-in-force
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EP10751555.3A
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German (de)
French (fr)
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EP2473775A2 (en
Inventor
Rüdiger Lanz
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LANZ, RUEDIGER
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Lanz Ruediger
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Publication of EP2473775A2 publication Critical patent/EP2473775A2/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/63—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates
    • F21S41/635—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates by moving refractors, filters or transparent cover plates
    • 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]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/255—Lenses with a front view of circular or truncated circular outline
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/28—Cover glass

Definitions

  • the invention relates to a motor vehicle front light with light-emitting diodes (LEDs) according to the preamble of patent claim 1.
  • the Ablelicht has clearly visible bright-dark boundaries, which are also adjustable in the correct manner. So it is necessary that the cut-off line on the side opposite to the side of the traffic direction, is designed as a horizontal line and on the other side should be either horizontal or within an angle of 15 degrees above the horizontal.
  • the front headlamp must meet clear criteria as regards the illumination of the road, as well as the lateral edges adjacent to the vehicle.
  • the DE 20 2007 018 181 U1 discloses a motor vehicle lamp with three juxtaposed LEDs, which are associated with a common lens body and another main collecting lens, between which there is a movable Abblendklappe.
  • the aim here is to achieve a better variation in the light distribution in that optical elements can be moved relative to the light sources. This should be able to be used with any bulbs.
  • EP 1 403 135 A2 is a vehicle lamp with a central larger LED and at least a second lateral smaller LED is known, which is arranged defocused. This is to be achieved, make the cut-off line variable to be able to.
  • EP 0 531 185 B1 discloses a motor vehicle lamp having a conductor formed as a printed circuit board carrier on which a plurality of light-emitting diodes are arranged.
  • a deformation of the strip-shaped conductor carrier areas in a predetermined shape in the motor vehicle light shape is possible, which here is the suitability above all for the tail light area.
  • a use for illuminating the road by a car front light is not possible here due to the lack of power and the lack of alignment of the lighting.
  • LED chips are to be used in the present invention as a light source, since they have a strong light output on a small area.
  • LED chips are already known from the Scriptures DE 10 2004 047 842 A1 in which an LED array comprising at least two LED chips and a temperature sensor has been disclosed. It is also referred to the application in motor vehicle headlamps.
  • the core of this disclosure is to combine a temperature sensor with the LED chips in order to detect and prevent a thermal overload of the LED array. This is to be achieved by regulating the operating current of the LED chips as a function of the temperatures detected by the temperature sensor.
  • a motor vehicle lamp of the type mentioned is also from the US 2005/0041434 known.
  • the object of the present invention against this background is therefore to design a vehicle front light based on LED technology so that it has both the sufficient light output for operation in a vehicle front light, as well as is constructed so that the required parameters the illumination of the road and the edge areas of the light field can be maintained.
  • the front light should be used both as low beam and as high beam.
  • the LED chips used in the motor vehicle front light have different sizes, with a larger centrally arranged LED chip is arranged as a main illuminant for illuminating the front of the vehicle located road surface. At least two smaller LED chips are added to this central LED chip, whose function is the illumination of both the central field and the edge area.
  • each of the several LED chips is assigned a lens body directly, whereby the light emission of the individual LED chips is in turn precisely adjustable in order to accurately determine the light space to be emitted.
  • the thus aligned light emissions are inventively merged and aligned again in a main collection lens, the position of these lenses can also be made variable to each other to adjust the light illumination exactly.
  • the motor vehicle lamp has a switchable Abblendklappe to switch between the operating conditions low beam and high beam, this Abblendklappe according to the invention between the directly associated with the LED chips lens bodies and this preceded main sammelinse is pivotally mounted.
  • the various LED chips are applied to the respective carrier plates, which are in turn held on common guide rods and thus parallel to each other, these carrier plates are movable in position relative to each other on the guide rods.
  • the vehicle lamp can be constructed so that the LED chips are arranged on their own carrier plates and the LED chips respectively associated lens body on further compared to the first carrier plates adjustable support plates are arranged, wherein finally the main collecting lens is also arranged on guide rods adjustable relative to the other lighting components.
  • the main collecting lens is also arranged on guide rods adjustable relative to the other lighting components.
  • an advantageous design provides for the arrangement of the LED chips in planes at different distances from the main collecting lens.
  • the central larger LED chip is applied directly to a heat sink, in which the guide rods for the arrangement of the carrier plates are guided. This LED chip is thus furthest away from the main collection lens.
  • this LED chip In a next level of this LED chip is preceded by a corresponding lens body as light-guiding optics, which is arranged on a support plate on the guide rods. Only in a next level on a separate carrier plate further smaller LED chips are arranged, which are thus arranged much closer to the main collection lens, as the LED chip on the heat sink. In a turn closer to the main collection lens, these smaller LED chips are now preceded by smaller lens bodies.
  • the differently sized LED chips are each preceded by lenses, which are dimensioned depending on the size of the respective LED chips and are adjustable in their distance from the LED chips.
  • the size of the LED chips can be in a convenient design in about 30 X 30 mm for the large LED chip and 15 x 15mm for the smaller LED chips, thereby providing sufficient light output for the frontal lighting of a motor vehicle is realized.
  • the flap for the change between high beam and low beam also has a structural form according to the invention, in which this Abblendklappe has a stepped edge, which is folded in front of the light-emitting optics.
  • this Abblendklappe has a stepped edge, which is folded in front of the light-emitting optics.
  • the lens body of the LED chips are partially hidden by the Abblendklappe to reduce the range of illumination accordingly.
  • the lens body of the smaller LED chips which are responsible in particular for the lateral area, are covered to varying degrees, as the Lateral illumination, for example, of the edge area to the sidewalk on a street to continue to illuminate, as the areas of the opposite or adjacent lane.
  • the grading is located inside the flap for the low beam.
  • Another feature of this special Abblendklappe is that this is profiled in relation to the position lens body to each other so that it has an approximately constant distance from the lens bodies. In this way, a horizontal well illuminated light plane is achieved in the dipped beam with a sharp contour. In addition, the edge areas of the flap were moved a few mm closer to the main collection lens. Thus, the radiated light of the outer two LED chips is just as sharp image as that of the main LED chip.
  • FIG. 1 a side view through the arrangement of the bulbs and optics of the motor vehicle lamp and
  • FIG. 2 the Abblendklappe invention in a folded state before the lens body.
  • FIG. 1 the car front light 5 can be seen in a lateral view.
  • a heat sink 10 is shown as the basis for the motor vehicle light, which at the same time acts as a carrier for the central LED chip 1.
  • the size of the LED chip 1 shown here corresponds approximately to the natural size of 30 mm.
  • the LED chip 1 Preceded by the LED chip 1 is a lens body 3 which is adapted in its width and which is arranged on a carrier plate 8.
  • the support plate is guided in its edge regions on corresponding guide rods 9, which are mounted in the heat sink 10.
  • the lens body 3 is in this case close to the LED chip 1 in order to accept the smallest possible lateral losses of the light emission.
  • a further support plate 8 is guided on the lateral guide rods 9, which now carries further LED chips 2, which are thus arranged laterally of the central LED chip 1.
  • the light emission of these LED chips 2 is captured by further lens bodies 4, which are arranged on a further carrier plate 8 in front of the LED chips 2.
  • On this support plate 8 is guided laterally on the guide rods 9 and is thus variably adjustable in their distance from the LED chips 2.
  • a larger main collecting lens 6 is arranged, which is adjustably guided on further guide rods 9.
  • the distance of this main collecting lens to the LED chips and their lens bodies can be accurately adjusted.
  • the LED chips 2 are in the illustrated design about 10 mm in size and are thus significantly smaller than the central LED chip 1, which should provide the main light output.
  • the arrangement of the car front light still gives a compact body comprising the LED chips and corresponding optical components, so that the use of the vehicle front light according to the invention without significant structural changes in existing vehicles can be realized.
  • FIG. 2 is a plan view of the car Frontleuch te, the main collection lens is not shown here.
  • the view falls on the front of the lens body 2 and 4 folded Abblendklappe 7 with a drive 10, which has a gradual course.
  • a different coverage of the lens bodies 3 and 4 is achieved, which has the consequence that the edge regions of the illuminated field are differently illuminated in front of the motor vehicle, as required for correct illumination.

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  • 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 Erfindung betrifft eine Kraftfahrzeugfrontleuchte mit lichtemittierenden Dioden (LEDs) gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a motor vehicle front light with light-emitting diodes (LEDs) according to the preamble of patent claim 1.

Es ist bekannt, Kraftfahrzeugleuchten, und hierbei insbe-sondere Heckleuchten, mit LEDs anstelle von Glüh-, Halogen- oder Entladungslampen zu bestücken, da diese unter anderem die Vorteile einer deutlich besseren Effizienz und Lebensdauer aufweisen.It is known to equip automotive lights, and in particular rear lights, with LEDs instead of incandescent, halogen or discharge lamps, as these have, inter alia, the advantages of significantly better efficiency and lifetime.

Es sind grundsätzlich bei der Gestaltung der Frontleuchten von Kraftfahrzeugen Kriterien zu beachten, die für die Zulässigkeit dieser Scheinwerfer erforderlich sind. So müssen derartige Leuchten so konstruiert sein, dass das Abblendlicht eine ausreichend blendfreie Beleuchtung bewirkt. Gleichzeitig soll das Fernlicht eine ausreichend gute Beleuchtung bewirken können.In principle, when designing the front lights of motor vehicles, criteria must be observed that are necessary for the admissibility of these headlights. So such lights must be designed so that the low beam causes a sufficiently glare-free lighting. At the same time the high beam should be able to cause a sufficiently good lighting.

Ebenfalls ist es erforderlich, dass das Ablendlicht deutlich erkennbare Hell-Dunkel-Grenzen aufweist, die auch in korrekter Weise einstellbar sind. So ist es erforderlich, dass die Hell-Dunkel-Grenze auf der Seite, die der Seite der Verkehrsrichtung gegenüberliegt, als waagrechte Gerade ausgebildet ist und auf der anderen Seite entweder waagrecht oder innerhalb eines Winkels von 15 Grad über der Waagrechten verlaufen soll. Zusammenfassend ist festzustellen, dass der Frontscheinwerfer klaren Kriterien entsprechend muss, was die Ausleuchtung der Strasse, sowie der seitlichen Randbereiche neben dem Fahrzeug anbetrifft.It is also necessary that the Ablendlicht has clearly visible bright-dark boundaries, which are also adjustable in the correct manner. So it is necessary that the cut-off line on the side opposite to the side of the traffic direction, is designed as a horizontal line and on the other side should be either horizontal or within an angle of 15 degrees above the horizontal. In summary, it should be noted that the front headlamp must meet clear criteria as regards the illumination of the road, as well as the lateral edges adjacent to the vehicle.

Im Stand der Technik sind vielfache Ansätze zur Integration von Leuchtdioden im Bereich der KFZ-Fahrzeugbeleuch-tung angedacht worden. Hierbei ergibt sich insbesondere die Herausforderung, eine Vielzahl von Leuchtdioden in einem Beleuchtungskörper zu integrieren um eine ausreichende Lichtstärke zu erreichten und gleichzeitig die hierbei entstehende Wärme abzuführen.In the prior art, multiple approaches to the integration of light emitting diodes in the field of vehicle vehicle lighting have been considered. This results in particular in the challenge of integrating a plurality of light-emitting diodes in a lighting fixture in order to achieve a sufficient light intensity and at the same time dissipate the resulting heat.

Die DE 20 2007 018 181 U1 offenbart eine KFZ-Leuchte mit drei nebeneinander angeordneten LEDs, denen ein gemeinsamer Linsenkörper und eine weitere Hauptsammellinse zugeordnet sind, zwischen denen sich eine bewegliche Abblendklappe befindet. Ziel hierbei ist es, eine bessere Variation bei der Lichtverteilung dadurch zu erreichen, daß optische Elemente relativ zu den Lichtquellen bewegt werden können. Dies soll bei beliebigen Leuchtmitteln verwendet werden können.The DE 20 2007 018 181 U1 discloses a motor vehicle lamp with three juxtaposed LEDs, which are associated with a common lens body and another main collecting lens, between which there is a movable Abblendklappe. The aim here is to achieve a better variation in the light distribution in that optical elements can be moved relative to the light sources. This should be able to be used with any bulbs.

Aus der EP 1 403 135 A2 ist eine Fahrzeugleuchte mit einer zentralen größeren LED und zumindest einer zweiten seitlichen kleineren LED bekannt, die defokussiert angeordnet ist. Hierdurch soll erreicht werden, die Hell-Dunkel-Grenze variabel gestalten zu können.From the EP 1 403 135 A2 is a vehicle lamp with a central larger LED and at least a second lateral smaller LED is known, which is arranged defocused. This is to be achieved, make the cut-off line variable to be able to.

So ist aus der EP 0 531 185 B1 eine Kraftfahrzeugleuchte offenbart, die einen als Leiterplatte ausgebildeten Leiterbahnträger aufweist, auf dem mehrere Leuchtdioden angeordnet sind. Durch diese Anordnung ist eine Verformung der streifenförmigen Leiterbahnträgerbereiche in eine in der Kraftfahrzeugleuchte vorgegeben Form ermöglicht, wodurch sich hier die Eignung vor allen Dingen für den Heckleuchtenbereich ergibt. Eine Verwendung zur Ausleuchtung der Strasse durch eine KFZ-Frontleuchte ist hier aufgrund der mangelnden Leistung sowie der fehlenden Ausrichtung der Beleuchtung nicht möglich.So is out of the EP 0 531 185 B1 discloses a motor vehicle lamp having a conductor formed as a printed circuit board carrier on which a plurality of light-emitting diodes are arranged. By this arrangement, a deformation of the strip-shaped conductor carrier areas in a predetermined shape in the motor vehicle light shape is possible, which here is the suitability above all for the tail light area. A use for illuminating the road by a car front light is not possible here due to the lack of power and the lack of alignment of the lighting.

Gleiches gilt für die Schrift US 5519596 A bei der ein metallisches plattenförmiges Trägerteil mehrere Leuchtdioden trägt. Es sind auch hier verschiedene Trägerplattenabschnitte vorgesehen, die für sich Leuchtdioden tragen, um eine Biegeverformung möglich zu machen. Auch hier ist aus den zuvor genannten Gründen eine Verwendung als KFZ-Frontleuchte nicht möglich.The same applies to the writing US 5519596 A in which a metallic plate-shaped carrier part carries a plurality of light-emitting diodes. There are also different support plate sections provided here, which carry light-emitting diodes to make a bending deformation possible. Again, a use as a car front light is not possible for the reasons mentioned above.

Um die für die Ausleuchtung einer Strasse durch KFZ-Frontleuchten erforderlichen Lichtstärke zu erreichen, sollen in der vorliegenden Erfindung als Leuchtmittel LED-Chips eingesetzt werden, da diese eine starke Lichtleistung auf einer geringen Fläche aufweisen.In order to achieve the required for the illumination of a road by car front lights light intensity, LED chips are to be used in the present invention as a light source, since they have a strong light output on a small area.

Die Verwendung derartiger LED-Chips ist bereits bekannt aus der Schrift DE 10 2004 047 842 A1 , in der ein LED-Array umfassend zumindest zwei LED-Chips und einen Temperatursensor offenbart worden ist. Es wird hierbei zudem auf die Anwendung in KFZ-Scheinwerfern hingewiesen. Kern dieser Offenbarung ist allerdings, einen Temperatursensor mit den LED-Chips zu kombinieren, um eine thermische Überlastung des LED-Arrays zu erkennen und zu verhindern. Es soll dies durch eine Regelung des Betriebsstrom der LED-Chips in Abhängigkeit von den durch den Temperatursensor erfassten Temperaturen erreicht werden.The use of such LED chips is already known from the Scriptures DE 10 2004 047 842 A1 in which an LED array comprising at least two LED chips and a temperature sensor has been disclosed. It is also referred to the application in motor vehicle headlamps. However, the core of this disclosure is to combine a temperature sensor with the LED chips in order to detect and prevent a thermal overload of the LED array. This is to be achieved by regulating the operating current of the LED chips as a function of the temperatures detected by the temperature sensor.

Nachteilig hierbei ist, dass in dieser Offenbarung lediglich die Verwendung einer zur Strahlformung eingesetzten Optik allgemein offenbart ist, ohne die Frage der vorschriftgemäßen Ausleuchtung der Strasse in ihrem zentralen sowie in ihren Randbreichen zu berücksichtigen. Die Offenbarung der DE 10 2004 047 682 A1 stellt somit keinen KFZ-Frontscheinwerfer in einer zugelassenen Bauform dar.The disadvantage here is that in this disclosure, only the use of optics used for beam forming is generally disclosed, without taking into account the question of the regulatory illumination of the street in its central and in their Randbreichen. The revelation of DE 10 2004 047 682 A1 thus does not represent a motor vehicle headlight in an approved design.

Eine Kraftfahrzeugleuchte der genannten Art ist auch aus der US 2005/0041434 bekannt.A motor vehicle lamp of the type mentioned is also from the US 2005/0041434 known.

Die Aufgabe der vorliegenden Erfindung vor diesem Hintergrund ist es daher eine KFZ-Frontleuchte basierend auf LED-Technik so zu gestalten, dass diese sowohl die ausreichende Lichtleistung für den Betrieb in einer KFZ-Fronteuchte aufweist, als auch so konstruiert ist, dass die erforderlichen Parameter der Ausleuchtung der Strasse sowie der Randbereiche des Lichtfeldes eingehalten werden können. Gleichzeitig soll die Frontleuchte sowohl als Abblendlicht als auch als Fernlicht eingesetzt werden können.The object of the present invention against this background is therefore to design a vehicle front light based on LED technology so that it has both the sufficient light output for operation in a vehicle front light, as well as is constructed so that the required parameters the illumination of the road and the edge areas of the light field can be maintained. At the same time, the front light should be used both as low beam and as high beam.

Erreicht wird dies durch eine Kraftfahrzeugfrontleuchte gemäß den kennzeichnenden Merkmalen des Anspruchs 1.This is achieved by a motor vehicle front light according to the characterizing features of claim 1.

Die Unteransprüche beschreiben vorteilhafte Bauformen des Erfindungsgegenstandes.The dependent claims describe advantageous designs of the subject invention.

Zur Lösung der Aufgabe ist es erforderlich, mehrere technische Mittel in die KFZ-Frontleuchte zu integrieren. So ist zum einen erfinderisch notwendig, mehrere LED-Chips in der Kraftfahrzeugleuchte anzuordnen, wobei diese Maßnahme nicht auf eine Verstärkung der Lichtleistung allein abzielt, sondern ebenfalls für die vorschriftsmäßige Ausleuchtung der Fahrbahn sowie der Randbereiche genutzt wird.To solve the problem, it is necessary to integrate several technical means in the car front light. Thus, on the one hand, it is inventively necessary to arrange a plurality of LED chips in the motor vehicle light, with this measure not aiming at an amplification of the light output alone, but also being used for the regulatory illumination of the roadway and the edge regions.

Es ist hierbei erfindungsgemäß vorgesehen, dass die in der Kraftfahrzeugfrontleuchte verwendeten LED-Chips unterschiedliche Grössen aufweisen, wobei ein grösserer zentral angeordneter LED-Chip als Hauptleuchtmittel zur Ausleuchtung der vor dem Fahrzeug sich befindlichen Strassenfläche angeordnet ist. Diesem zentralen LED-Chip sind weitere zumindest zwei kleinere LED-Chips nebengestellt, deren Funktion die Beleuchtung sowohl des zentralen Feldes wie auch der Randbereich ist.It is inventively provided that the LED chips used in the motor vehicle front light have different sizes, with a larger centrally arranged LED chip is arranged as a main illuminant for illuminating the front of the vehicle located road surface. At least two smaller LED chips are added to this central LED chip, whose function is the illumination of both the central field and the edge area.

Ingesamt sollen die verschiedenen in der Leuchte integrierten LED-Chips in ihrem Zusammenwirken den gewünschten Ausleuchtungsraum erreichen, der durch die entsprechende Positionierung der LED-Chips zueinander einstellbar ist. Hierbei ist ebenfalls ein zentrales erfinderisches Merkmal, dass den mehreren LED-Chips jeweils ein Linsenkörper direkt zugeordnet ist, wodurch die Lichtabstrahlung der einzelnen LED-Chips wiederum genau einstellbar ist, um den auszustrahlenden Lichtraum genau zu bestimmen. Die derart ausgerichteten Lichtabstrahlungen werden erfindungsgemäß in einer Hauptsammellinse nochmals zusammengeführt und ausgerichtet, wobei die Position dieser Linsen zueinander ebenfalls variabel gestaltet werden kann, um die Lichtausleuchtung genau einzustellen.Overall, the various integrated in the lamp LED chips in their interaction to achieve the desired illumination space, which is adjustable by the corresponding positioning of the LED chips to each other. Here too, a central inventive feature is that each of the several LED chips is assigned a lens body directly, whereby the light emission of the individual LED chips is in turn precisely adjustable in order to accurately determine the light space to be emitted. The thus aligned light emissions are inventively merged and aligned again in a main collection lens, the position of these lenses can also be made variable to each other to adjust the light illumination exactly.

Schließlich weist die KFZ-Leuchte eine schaltbare Abblendklappe auf, um zwischen den Betriebszuständen Abblendlicht und Fernlicht umschalten zu können, wobei diese Abblendklappe erfindungsgemäß zwischen den direkt den LED-Chips zugeordneten Linsenkörpern und der diesen vorangestellten Haupt-sammelinse schwenkbar angeordnet ist.Finally, the motor vehicle lamp has a switchable Abblendklappe to switch between the operating conditions low beam and high beam, this Abblendklappe according to the invention between the directly associated with the LED chips lens bodies and this preceded main sammelinse is pivotally mounted.

In einer vorteilhaften Ausgestaltung der Erfindung ist hierfür vorgesehen, dass die verschiedenen LED-Chips auf den jeweiligen Trägerplatten aufgebracht sind, die wiederum an gemeinsamen Führungsstäben gehalten sind und somit parallel zueinander verlaufen, wobei diese Trägerplatten in ihrer Position zueinander an den Führungsstäben beweglich sind.In an advantageous embodiment of the invention, it is provided for this purpose that the various LED chips are applied to the respective carrier plates, which are in turn held on common guide rods and thus parallel to each other, these carrier plates are movable in position relative to each other on the guide rods.

Somit kann in einer vorteilhaften Bauform die Fahrzeugleuchte so aufgebaut sein, dass die LED-Chips auf eigenen Trägerplatten angeordnet sind und die den LED-Chips jeweils zugeordneten Linsenkörper auf weiteren gegenüber den ersten Trägerplatten verstellbaren Trägerplatten angeordnet sind, wobei abschließend die Hauptsammellinse ebenfalls auf Führungsstäben verstellbar gegenüber den weiteren Beleuchtungskomponenten angeordnet ist. Somit sind alle für die Beleuchtung erforderlichen Betriebsmittel auf verstellbaren Trägerkörpern angeordnet und können exakt für eine optimale Ausleuchtung des zu beleuchtenden Raumes zueinander positioniert werden.Thus, in an advantageous design, the vehicle lamp can be constructed so that the LED chips are arranged on their own carrier plates and the LED chips respectively associated lens body on further compared to the first carrier plates adjustable support plates are arranged, wherein finally the main collecting lens is also arranged on guide rods adjustable relative to the other lighting components. Thus, all equipment required for lighting are arranged on adjustable support bodies and can be positioned exactly for optimal illumination of the room to be illuminated to each other.

Es ist hierbei ebenfalls für die Erfindung relevant, dass eine vorteilhafte Bauform die Anordnung der LED-Chips in Ebenen mit unterschiedlicher Distanz zur Hauptsammellinse vorsieht. So ist in einer zweckmäßigen Bauform der zentrale größere LED-Chip direkt auf einem Kühlkörper aufgebracht, in dem auch die Führungsstäbe für die Anordnung der Trägerplatten geführt sind. Dieser LED-Chip ist somit am weitesten von der Hauptsammellinse entfernt.It is also relevant here for the invention that an advantageous design provides for the arrangement of the LED chips in planes at different distances from the main collecting lens. Thus, in an expedient design, the central larger LED chip is applied directly to a heat sink, in which the guide rods for the arrangement of the carrier plates are guided. This LED chip is thus furthest away from the main collection lens.

In einer nächsten Ebene ist diesem LED-Chip ein entsprechender Linsenkörper als lichtführende Optik vorangestellt, die auf einer Trägerplatte an den Führungsstäben angeordnet ist. Erst in einer nächsten Ebene auf einer separaten Trägerplatte sind weitere kleinere LED-Chips angeordnet, die somit deutlich näher der Hauptsammellinse angeordnet sind, als der LED-Chip auf dem Kühlkörper. In einer wiederum der Hauptsammellinse näheren Ebene sind diesen kleineren LED-Chips nun kleinere Linsenkörper vorangestellt.In a next level of this LED chip is preceded by a corresponding lens body as light-guiding optics, which is arranged on a support plate on the guide rods. Only in a next level on a separate carrier plate further smaller LED chips are arranged, which are thus arranged much closer to the main collection lens, as the LED chip on the heat sink. In a turn closer to the main collection lens, these smaller LED chips are now preceded by smaller lens bodies.

Es ist somit ebenfalls eine zentrale Neuerung dieser KFZ-Fahrzeugleuchte, dass den unterschiedlich grossen LED-Chips jeweils Linsen vorangestellt sind, die in Abhängigkeit der Grösse der jeweiligen LED-Chips dimensioniert sind und in ihrer Distanz zu den LED-Chips einstellbar sind.It is therefore also a key innovation of this vehicle vehicle light, that the differently sized LED chips are each preceded by lenses, which are dimensioned depending on the size of the respective LED chips and are adjustable in their distance from the LED chips.

Die Grösse der LED-Chips kann hierbei in einer zweckmäßigen Bauform in etwa 30 X 30 mm für den grossen LED-Chip und 15 x 15mm für die kleineren LED-Chips betragen, wodurch eine ausreichende Lichtleistung für die frontale Beleuchtung eines Kraftfahrzeugs realisiert ist.The size of the LED chips can be in a convenient design in about 30 X 30 mm for the large LED chip and 15 x 15mm for the smaller LED chips, thereby providing sufficient light output for the frontal lighting of a motor vehicle is realized.

Schließlich weist die Klappe für den Wechsel zwischen Fernlicht und Abblendlicht ebenfalls eine erfindungsgemäße bauliche Form auf, in dem diese Abblendklappe eine stufige Kante aufweist, die vor die das Licht abstrahlenden Optiken geklappt wird. So werden die Linsenkörper der LED-Chips durch die Abblendklappe teilweise verdeckt, um den Bereich der Ausleuchtung entsprechend zu reduzieren.Finally, the flap for the change between high beam and low beam also has a structural form according to the invention, in which this Abblendklappe has a stepped edge, which is folded in front of the light-emitting optics. Thus, the lens body of the LED chips are partially hidden by the Abblendklappe to reduce the range of illumination accordingly.

Hierbei ist je nach Verwendung des Kraftfahrzeugs für den Rechts- oder Linksverkehr eine Abstufung zur rechten oder linken Seite der Fahrzeugleuchte vorgesehen, sodass die Linsenkörper der kleineren LED-Chips, die insbesondere für den seitlichen Bereich zuständig sind, in unterschiedlichem Maße abgedeckt werden, da die seitliche Ausleuchtung beispielsweise des Randbereiches zum Bürgersteig an einer Strasse hin weiter auszuleuchten sind, als die Bereiche der gegenüberliegenden bzw. benachbarten Fahrbahn. Um diesen unterschiedlichen Anforderungen an die Ausleuchtung gerecht zu werden, ist die Stufung innerhalb der Klappe für das Abblendlicht angeordnet.Here, depending on the use of the motor vehicle for right-hand or left-hand traffic gradation to the right or left side of the vehicle lamp is provided so that the lens body of the smaller LED chips, which are responsible in particular for the lateral area, are covered to varying degrees, as the Lateral illumination, for example, of the edge area to the sidewalk on a street to continue to illuminate, as the areas of the opposite or adjacent lane. To meet these different lighting requirements To cope, the grading is located inside the flap for the low beam.

Ein weiteres Merkmal dieser speziellen Abblendklappe ist, dass diese in Abhängigkeit von der Lage Linsenkörper zueinander so profiliert ist, dass sie einen in etwa konstanten Abstand zu den Linsenkörpern aufweist. Auf diese Weise wird eine horizontale gut ausgeleuchtete Lichtebene beim Abblendlicht mit scharfer Kontur erreicht. Es wurden zudem die Randbereiche der Klappe einige mm näher zur Hauptsammellinse hin verschoben. Somit ist das abgestrahlte Licht der äußeren zwei LED-Chips genauso scharf abzubilden wie das des Haupt-LED-Chips.Another feature of this special Abblendklappe is that this is profiled in relation to the position lens body to each other so that it has an approximately constant distance from the lens bodies. In this way, a horizontal well illuminated light plane is achieved in the dipped beam with a sharp contour. In addition, the edge areas of the flap were moved a few mm closer to the main collection lens. Thus, the radiated light of the outer two LED chips is just as sharp image as that of the main LED chip.

Nachfolgend soll die Erfindung anhand zweier Zeichnungen näher beschreiben werden. Es zeigenThe invention will be described in more detail with reference to two drawings. Show it

Figur 1 eine seitliche Ansicht durch die Anordnung der Leuchtmittel und Optiken der Kraftfahrzeugleuchte und FIG. 1 a side view through the arrangement of the bulbs and optics of the motor vehicle lamp and

Figur 2 die erfindungsgemäße Abblendklappe in einem vor die Linsenkörper geklappten Zustand. FIG. 2 the Abblendklappe invention in a folded state before the lens body.

In Figur 1 ist die KFZ-Frontleuchte 5 in seitlicher Darstellung zu erkennen. Es ist hierbei als Basis für die Kraftfahrzeugleuchte ein Kühlkörper 10 dargestellt, der gleichzeitig als Träger für den zentralen LED-Chip 1 fungiert. Die Grösse des dargestellten LED-Chips 1 entspricht hierbei in etwa der natürlichen Grösse von 30 mm.In FIG. 1 the car front light 5 can be seen in a lateral view. In this case, a heat sink 10 is shown as the basis for the motor vehicle light, which at the same time acts as a carrier for the central LED chip 1. The size of the LED chip 1 shown here corresponds approximately to the natural size of 30 mm.

Dem LED-Chip 1 vorangestellt ist eine in seiner Breite angepasste Linsenkörper 3, der auf einer Trägerplatte 8 angeordnet ist. Die Trägerplatte ist in ihren Randbereichen geführt an entsprechenden Führungsstäben 9, die im Kühlkörper 10 gelagert sind. Der Linsenkörper 3 ist hierbei nah vor dem LED-Chip 1 um möglichst geringe seitliche Verluste der Lichtabstrahlung hinnehmen zu müssen.Preceded by the LED chip 1 is a lens body 3 which is adapted in its width and which is arranged on a carrier plate 8. The support plate is guided in its edge regions on corresponding guide rods 9, which are mounted in the heat sink 10. The lens body 3 is in this case close to the LED chip 1 in order to accept the smallest possible lateral losses of the light emission.

Oberhalb bzw. vor dem Linsenkörper 3 ist eine weitere Trägerplatte 8 an den seitlichen Führungsstäben 9 geführt, die nun weitere LED-Chips 2 trägt, die somit seitlich des zentralen LED-Chips 1 angeordnet sind. Die Lichtabstrahlung dieser LED-Chips 2 wird von weiteren Linsenkörpern 4 eingefangen, die auf einer weiteren Trägerplatte 8 vor den LED-Chips 2 angeordnet sind. Auf diese Trägerplatte 8 wird seitlich an den Führungsstäben 9 geführt und ist somit in ihrem Abstand gegenüber den LED-Chips 2 variabel einstellbar.Above or in front of the lens body 3, a further support plate 8 is guided on the lateral guide rods 9, which now carries further LED chips 2, which are thus arranged laterally of the central LED chip 1. The light emission of these LED chips 2 is captured by further lens bodies 4, which are arranged on a further carrier plate 8 in front of the LED chips 2. On this support plate 8 is guided laterally on the guide rods 9 and is thus variably adjustable in their distance from the LED chips 2.

In grösserem Abstand zu diesen baulichen Einheiten ist eine grössere Hauptsammellinse 6 angeordnet, die an weiteren Führungsstäben 9 verstellbar geführt ist. Somit kann auch der Abstand dieser Hauptsammellinse zu den LED-Chips und deren Linsenkörpern genau eingestellt werden.At a greater distance from these structural units, a larger main collecting lens 6 is arranged, which is adjustably guided on further guide rods 9. Thus, the distance of this main collecting lens to the LED chips and their lens bodies can be accurately adjusted.

Die LED-Chips 2 sind in der dargestellten Bauform etwa 10 mm gross und sind somit deutlich kleine als der zentrale LED-Chip 1, der die Hauptlichtleistung erbringen soll. Die Anordnung der KFZ-Frontleuchte ergibt dennoch einen kompakten Körper umfassend die LED-Chips sowie entsprechenden optischen Bauteile, sodass die Verwendung der erfindungsgemäßen KFZ-Frontleuchte ohne wesentliche bauliche Änderungen im bisherigen Fahrzeugen realisiert werden kann.The LED chips 2 are in the illustrated design about 10 mm in size and are thus significantly smaller than the central LED chip 1, which should provide the main light output. The arrangement of the car front light still gives a compact body comprising the LED chips and corresponding optical components, so that the use of the vehicle front light according to the invention without significant structural changes in existing vehicles can be realized.

Figur 2 ist eine Draufsicht auf die Kfz-Frontleuch-te, wobei die Hauptsammellinse hier nicht dargestellt ist. Der Blick fällt auf die vor die Linsenkörper 2 und 4 geklappte Abblendklappe 7 mit einem Antrieb 10, die einen stufigen Verlauf aufweist. Durch diesen stufigen Verlauf ist somit eine unterschiedliche Abdeckung der Linsenkörper 3 und 4 erreicht, was zur Folge hat, dass die Randbereiche des ausgeleuchteten Feldes vor dem Kraftfahrzeug unterschiedlich ausgeleuchtet sind, wie dies für eine vorschriftsmäßige Ausleuchtung erforderlich ist. FIG. 2 is a plan view of the car Frontleuch te, the main collection lens is not shown here. The view falls on the front of the lens body 2 and 4 folded Abblendklappe 7 with a drive 10, which has a gradual course. As a result of this stepped course, a different coverage of the lens bodies 3 and 4 is achieved, which has the consequence that the edge regions of the illuminated field are differently illuminated in front of the motor vehicle, as required for correct illumination.

Claims (11)

  1. Vehicle lighting with light-emitting diodes (LED's) comprising of several LED lamps together with at least one optical unit for the alignment of the light beam characterized in that
    - several LED lamps (1,2) set in the vehicle lamp (5), and to each of which a lens (3, 4) is allocated,
    - whereby at least one centrally located LED chip (1) is positioned between two smaller LED lamps (2) on each side.
    - and a further main collective lens (6) is positioned at a distance in front of the LED lamps (1, 2) and their lenses (3, 4)
    - whereby a movable dimming flap (7) is positioned between lenses (3, 4) and the main collective lens (6) and
    - at least the distances between the levels of the lenses are adjustable for setting the vehicle lighting (5)
  2. Vehicle lighting as specified in Claim 1.
    characterized in that
    as smaller LED lamps (2) LED chips are also allocated in addition to the central LED chip (1).
  3. Vehicle lighting in accordance with one of the foregoing claims
    characterized in that
    - the LED chips (1, 2) and the lenses (3, 4) are mounted on adjustable carrier plates (8),
    - which are retained in parallel guide rods,
    - which run all about parallel to the light axis of the vehicle (5).
  4. Vehicle lighting in accordance with one of the foregoing claims
    characterized in that
    the LED chips (1, 2) are positioned at different levels.
  5. Vehicle lighting in accordance with one of the foregoing claims
    characterized in that
    the large central LED chip (1) is positioned at a greater distance from the main collective lens (6) than smaller LED lamps place at the sides (2).
  6. Vehicle lighting in accordance with one of the foregoing claims
    characterized in that
    - the lenses (3, 4) are positioned at the shortest possible distance in front of the LED chips (1,2)
    - whereby the lenses (3,4) adjusted variably in size to comply with the surface of the LED chips (1,2).
  7. Vehicle lighting in accordance with one of the foregoing claims
    characterized in that
    the central LED chip(1) is dimensioned in performance for illumination of the roadway and the side LED chips (2) are dimensioned for illumination of the outer areas of the roadway and the neighboring traffic lane.
  8. Vehicle lighting in accordance with one of the foregoing claims
    characterized in that
    - the dimming flap (7) on the one side exhibits a step in its edge partially covering the lenses (3,4)for differing illumination of the areas at the furthest edge of the roadway and the neighboring traffic lane,
    - and on the other side dependent upon the position of the lenses (3,4) in relation to one another is profiled such that it exhibits an almost constant distance to the lenses (3, 4)
  9. Vehicle lighting in accordance with one of the foregoing claims
    characterized in that
    at least two small side mirrors are positioned beside the lenses (3, 4) of the small side LED lamps (2) in order to redirect the scattered side light to the main collective lens (6) to increase the illumination Strength of the side areas to be illuminated.
  10. vehicle lighting in accordance with Claim 10,
    characterized in that
    these mirrors are positioned above the dimming flap edge of the full headlight so that the light reflection from the mirror is mainly utilized for strengthening illumination by dimmed headlights.
  11. Vehicle lighting in accordance with Claim 10 or 11
    characterized in that
    these mirrors are positioned all about vertically standing at lens level whereby the setting of the front edge of the mirror is effected at the edge area of the main collective lens (6).
EP10751555.3A 2009-04-23 2010-04-23 Motor vehicle front light having light-emitting diodes (leds) Not-in-force EP2473775B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009018379A DE102009018379B3 (en) 2009-04-23 2009-04-23 Motor vehicle front light with light emitting diodes (LEDs)
PCT/DE2010/050023 WO2010121612A2 (en) 2009-04-23 2010-04-23 Motor vehicle front light having light-emitting diodes (leds)

Publications (2)

Publication Number Publication Date
EP2473775A2 EP2473775A2 (en) 2012-07-11
EP2473775B1 true EP2473775B1 (en) 2014-02-12

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DE (1) DE102009018379B3 (en)
WO (1) WO2010121612A2 (en)

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CN105570791B (en) * 2015-12-28 2018-05-15 广东骑光车灯工业有限公司 A kind of optical lens LED motorcycle headlamp of integrated form

Also Published As

Publication number Publication date
WO2010121612A2 (en) 2010-10-28
DE102009018379B3 (en) 2010-10-28
WO2010121612A3 (en) 2011-03-17
EP2473775A2 (en) 2012-07-11

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