DE102011009100A1 - Illumination device e.g. ceiling light, for illuminating lighting equipments e.g. instruments, in interior of motor car, has light source emitting light, where light source opens into conductor portion with optics - Google Patents

Illumination device e.g. ceiling light, for illuminating lighting equipments e.g. instruments, in interior of motor car, has light source emitting light, where light source opens into conductor portion with optics Download PDF

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Publication number
DE102011009100A1
DE102011009100A1 DE102011009100A DE102011009100A DE102011009100A1 DE 102011009100 A1 DE102011009100 A1 DE 102011009100A1 DE 102011009100 A DE102011009100 A DE 102011009100A DE 102011009100 A DE102011009100 A DE 102011009100A DE 102011009100 A1 DE102011009100 A1 DE 102011009100A1
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light
light source
optics
conductor
lighting device
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DE102011009100A
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German (de)
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Manuel Brosinger
Dr. Schneider Konrad
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Audi AG
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Audi AG
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/2607—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic comprising at least two indicating lamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/2696—Mounting of devices using LEDs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/28—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating front of vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/34—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating change of drive direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/60—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by optical aspects
    • B60Q3/62—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by optical aspects using light guides
    • B60Q3/64—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by optical aspects using light guides for a single lighting 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/24—Light guides
    • 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
    • F21S41/322—Optical layout thereof the reflector using total internal reflection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/249—Light guides with two or more light sources being coupled into the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0028—Light guide, e.g. taper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2400/00—Special features or arrangements of exterior signal lamps for vehicles
    • B60Q2400/20—Multi-color single source or LED matrix, e.g. yellow blinker and red brake lamp generated by single lamp
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2400/00—Special features or arrangements of exterior signal lamps for vehicles
    • B60Q2400/30—Daytime running lights [DRL], e.g. circuits or arrangements therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)

Abstract

The device (1) has a light conductor (2) with a edge-side intended optic for a lateral decoupling of a light that is emitted by a light source (10) i.e. LED. The light conductor comprises a light coupling portion (7) with multiple individual conductor sections (8), which are assigned to the light source. The light source opens into a common conductor portion (3) with an optics (4). The individual conductor sections form a Y-shaped arrangement with the conductor portion, where ends (12) of the respective individual conductor sections lie in a common plane.

Description

Die Erfindung betrifft eine Kraftfahrzeugbeleuchtung zur Innenraumbeleuchtung oder zur Außenbeleuchtung.The invention relates to a motor vehicle lighting for interior lighting or exterior lighting.

Im Innenraum eines Kraftfahrzeugs sind üblicherweise beachtlich viele Beleuchtungseinrichtungen vorgesehen, die der Beleuchtung verschiedener Gerätschaften wie Instrumente, Griffmulden etc. oder der allgemeinen Innenraumbeleuchtung als Deckenleuchten oder Seitenleuchten (z. B. auch als Ambientenbeleuchtung) dienen. Auch im Außenbereich sind diverse Beleuchtungseinrichtungen vorgesehen, z. B. Heckleuchten oder Scheinwerfer, die der Erkennbarkeit des Fahrzeugs wie auch zur Ausleuchtung des Fahrzeugvorfelds dienen. Zunehmend werden Lichtleiter eingesetzt, in die über eine Lichtquelle Licht eingekoppelt wird, das andernorts am Lichtleiter wieder ausgekoppelt wird. Häufig ist am Lichtleiter im Bereich des Auskoppelabschnitts eine randseitige Optik vorgesehen, die zum seitlichen Auskoppeln des eingestrahlten Lichts dient. Diese Optik ist beispielsweise in Form einer Oberflächenstrukturierung oder dergleichen realisiert. Im Bereich der Oberflächenstrukturierung wird das Licht zur Seite hin reflektiert, so dass es vom Lichtleiter abgestrahlt wird. Mitunter jedoch ist die von der Lichtquelle eingekoppelte Lichtmenge nicht ausreichend, um die geforderte Beleuchtungsaufgabe zu erfüllen. Beispielsweise kann in einem Scheinwerfer nur ein Lichtleiter mit relativ kurzer Länge verwendet werden, das heißt, dass die Länge des Lichtauskoppelabschnitts kurz ist. Nachdem über den Querschnitt des Lichtleiters die einkoppelbare Lichtmenge begrenzt wird, da zu hohe eingekoppelte Lichtleistungen zu einem „Cracken” des Lichtleitermaterials führen können, ist folglich mitunter die Verwendung derartiger Lichtleiter-Lösungen aufgrund der zu geringen auskoppelbaren Lichtmenge nicht möglich.In the interior of a motor vehicle, a considerable number of lighting devices are usually provided which serve the illumination of various equipment such as instruments, recessed grips, etc. or the general interior lighting as ceiling lights or side lights (eg also as ambient lighting). Even in the outdoor area various lighting devices are provided, for. B. tail lights or headlights that serve the visibility of the vehicle as well as the illumination of the vehicle apron. Increasingly, optical fibers are used, into which light is coupled via a light source, which is decoupled elsewhere on the optical fiber. Frequently, an edge-side optics is provided on the light guide in the region of the decoupling section, which serves for the lateral decoupling of the irradiated light. This optics is realized for example in the form of a surface structuring or the like. In the area of surface structuring, the light is reflected to the side so that it is emitted by the light guide. Occasionally, however, the amount of light coupled in by the light source is insufficient to fulfill the required lighting task. For example, in a headlamp, only a light guide having a relatively short length may be used, that is, the length of the light outcoupling section is short. After over the cross section of the light guide the einkoppelbare amount of light is limited, as too high coupled-in light powers can lead to a "cracking" of the optical fiber material, therefore, sometimes the use of such optical fiber solutions due to the low output quantity of light is not possible.

Der Erfindung liegt damit das Problem zugrunde, eine Kraftfahrzeugbeleuchtungseinrichtung anzugeben, die auch in spezielleren Bausituationen die Auskopplung einer hinreichenden Lichtmenge ermöglicht.The invention is therefore based on the problem of specifying a motor vehicle lighting device that allows the extraction of a sufficient amount of light even in more specific construction situations.

Zur Lösung dieses Problems ist erfindungsgemäß vorgesehen, dass der Lichtleiter einen Lichteinkoppelabschnitt bestehend aus mehreren Einzelleiterabschnitten, denen jeweils eine Lichtquelle zugeordnet ist, die in einen gemeinsamen, die Optik aufweisenden Leiterabschnitt münden, aufweist.To solve this problem, the invention provides that the light guide has a light coupling section consisting of a plurality of individual conductor sections, to each of which a light source is assigned, which open into a common conductor section having the optic.

Der bei der erfindungsgemäßen Beleuchtungseinrichtung vorgesehene Lichtleiter besteht aus mehreren Teilabschnitten. Er weist einen speziellen Lichteinkoppelabschnitt auf, der aus mehreren Einzelleiterabschnitten besteht. Diese Einzelleiterabschnitte laufen in einem gemeinsamen Leiterabschnitt zusammen, der die Optik zur Lichtauskopplung zur Seite hin aufweist. Jedem dieser separaten Einzelleiterabschnitte ist eine separate Lichtquelle zugeordnet. Das heißt, dass zum einen die Lichtmenge erhöht werden kann, da nicht nur eine Lichtquelle ihr Licht einkoppelt, sondern mehrere, mithin also die einkoppelbare Lichtmenge ein Vielfaches der Einzellichtquellenlichtmenge beträgt. Darüber hinaus kann auch über den Lichtleiter deutlich mehr Licht ausgekoppelt werden, da der geringe Leiterquerschnitt die Lichteinkoppelmenge nicht mehr begrenzt. Denn infolge der mehreren separaten Einkoppelstellen kann an jeder Stelle eben die maximale Lichtmenge eingekoppelt werden, die der Leiterquerschnitt zulässt. An der Auskoppeloptik wird nun folglich bei der erfindungsgemäßen Beleuchtungseinrichtung ebenfalls wesentlich mehr Licht ausgekoppelt, so dass folglich die Lichtabgabe und damit die Ausleuchtung wesentlich verbessert werden kann.The light guide provided in the lighting device according to the invention consists of several sections. It has a special Lichteinkoppelabschnitt, which consists of several Einzelleiterabschnitten. These individual conductor sections converge in a common conductor section, which has the optics for light extraction to the side. Each of these separate Einzelleiterabschnitte a separate light source is assigned. This means that, on the one hand, the amount of light can be increased, since not only one light source couples in its light, but several, and therefore the amount of light that can be coupled in, is a multiple of the single light source light quantity. In addition, significantly more light can also be coupled out via the light guide, since the small conductor cross-section no longer limits the light input quantity. Because of the multiple separate coupling points can be coupled at any point just the maximum amount of light that allows the conductor cross-section. Consequently, substantially more light is also coupled out at the coupling-out optics in the illumination device according to the invention, so that consequently the light output and thus the illumination can be substantially improved.

Gemäß einer zweckmäßigen Erfindungsausgestaltung sind zwei Einzelleiterabschnitte vorgesehen, die mit dem Leiterabschnitt eine Y-förmige Anordnung bilden, wobei die Einzelleiter bevorzugt gebogen in den gemeinsamen Leiterabschnitt übergehen. Diese gebogene Leiterführung ist für die Führung des Lichts im Leiterinneren zweckmäßig.According to an expedient embodiment of the invention, two individual conductor sections are provided which form a Y-shaped arrangement with the conductor section, the individual conductors preferably being bent over into the common conductor section. This curved ladder guide is useful for guiding the light inside the ladder.

Gemäß einer besonders zweckmäßigen Weiterbildung der Erfindung ist vorgesehen, dass die Enden der Einzelleiter in einer gemeinsamen Ebene liegen. Insbesondere bei Verwendung zweier Einzelleiter in Y-Konfiguration, insbesondere wenn sie gebogen geführt sind, kann das Licht in einer gemeinsamen Ebene eingekoppelt werden, das heißt, dass die Lichtquellen ebenfalls in einer gemeinsamen Ebene angeordnet sind, beispielsweise an einer gemeinsamen Leiterplatte. Der Lichtleiter ist lediglich so zu positionieren, dass die Einzelleiterabschnitte benachbart zu den Lichtquellen angeordnet sind, sodass sie insgesamt eine baulich kompakte Ausgestaltung ergibt.According to a particularly advantageous embodiment of the invention it is provided that the ends of the individual conductors lie in a common plane. In particular, when using two individual conductors in the Y configuration, in particular if they are guided bent, the light can be coupled in a common plane, that is, the light sources are also arranged in a common plane, for example on a common circuit board. The light guide is merely to be positioned so that the individual conductor sections are arranged adjacent to the light sources, so that overall they result in a structurally compact design.

Als Lichtquellen werden bevorzugt LEDs verwendet, die besonders kleinbauend sind und, wie zuvor erwähnt, sich ohne weiteres auf einer gemeinsamen Leiterplatte anordnen lassen. Die Lichtquellenanordnung ist sehr klein, gleichwohl sind mit LEDs sehr hohe Lichtmengen erzeugbar und einkoppelbar, so dass mit der erfindungsgemäßen Beleuchtungseinrichtung eine sehr gute Ausleuchtung erreichbar ist.As light sources LEDs are preferably used, which are particularly small-sized and, as mentioned above, can be easily arranged on a common circuit board. The light source arrangement is very small, however, with LEDs very high amounts of light can be generated and coupled, so that with the illumination device according to the invention a very good illumination can be achieved.

Eine erfindungsgemäße Kraftfahrzeugbeleuchtungseinrichtung ist bevorzugt ein Frontscheinwerfer, bei dem mittels des Lichtleiters ein Tagfahrlicht in Form eines Lichtbands, der aufgrund der Flexibilität des Lichtleiters nahezu beliebig verlaufen kann, realisiert ist. Denkbar wäre auch die Realisierung eine Blinklichts.A motor vehicle lighting device according to the invention is preferably a headlight in which by means of the light guide a daytime running light in the form of a light band, which can run almost arbitrarily due to the flexibility of the light guide, is realized. It would also be conceivable to realize a flashing light.

Weitere Vorteile und Einzelheiten der vorliegenden Erfindung ergeben sich aus den im Folgenden beschriebenen Ausführungsbeispielen sowie anhand der Zeichnung. Dabei zeigen:Further advantages and details of the present invention will become apparent from the embodiments described below and with reference to the drawing. Showing:

1 eine Prinzipdarstellung einer erfindungsgemäßen Beleuchtungseinrichtung einer ersten Ausführungsform, 1 a schematic diagram of a lighting device according to the invention of a first embodiment,

2 eine Prinzipdarstellung einer erfindungsgemäßen Beleuchtungseinrichtung einer zweiten Ausführungsform, und 2 a schematic diagram of a lighting device according to the invention a second embodiment, and

3 eine Prinzipdarstellung einer erfindungsgemäßen Beleuchtungseinrichtung einer dritten Ausführungsform. 3 a schematic diagram of a lighting device according to the invention a third embodiment.

1 zeigt eine erfindungsgemäße Kraftfahrzeugbeleuchtungseinrichtung 1 einer ersten Ausführungsform, die beispielsweise zur Innenraumbeleuchtung dient, die aber gleichermaßen auch als Außenbeleuchtung verwendet werden kann, beispielsweise durch Integration in einem Schweinwerfer, um hierüber z. B. ein Tagfahrlicht zu realisieren. Dieses kann hierüber besonders einfach realisiert werden, als die Kraftfahrzeugbeleuchtungseinrichtung, da aus einem Lichtleiter aufgebaut, in nahezu beliebigen geometrischen Formen (gerade, gebogen, leicht gewinkelt etc.) verlegt werden kann und mithin unterschiedliche „Lichtbandgeometrien” dargestellt werden können. 1 shows a motor vehicle lighting device according to the invention 1 a first embodiment, which is used for example for interior lighting, but equally can also be used as outdoor lighting, for example, by integration in a pig launcher, in order to z. B. to realize a daytime running light. This can be realized particularly simple here, as the motor vehicle lighting device, as constructed from a light guide, in almost any geometric shapes (straight, curved, slightly angled, etc.) can be laid and therefore different "band geometries" can be displayed.

Die Kraftfahrzeugbeleuchtung 1 umfasst einen im Querschnitt vorzugsweise runden Lichtleiter 2, bestehend aus einem einteiligen Leiterabschnitt 3, der an einer Seite eine Optik 4 in Form einer Oberflächenstrukturierung 5 aufweist, über die im Lichtleiter geführtes Licht 6, wie durch die Pfeile dargestellt, ausgekoppelt werden kann.The automotive lighting 1 comprises a cross-sectionally preferably round optical fiber 2 consisting of a one-piece ladder section 3 which on one side has an appearance 4 in the form of a surface structuring 5 has, over the light guided in the light guide 6 , as shown by the arrows, can be coupled out.

Zum Einkoppeln des Lichts weist der Lichtleiter 2 einen Lichteinkoppelabschnitt 7 auf, bestehend aus im gezeigten Beispiel 2 Einzelleiterabschnitten 8, die im gezeigten Beispiel nach 1 in der gleichen Ebene liegend seitlich vom Leiterabschnitt 3 abstehen und gemeinsam in diesen münden. Es ergibt sich eine Y-förmige Anordnung. Der Durchmesser der Lichtleiterabschnitte 8 wie auch des Leiterabschnitts 3 ist vorzugsweise überall gleich, ebenso die vorzugsweise runde Querschnittsform.For coupling the light, the light guide 2 a Lichteinkoppelabschnitt 7 on, consisting of in the example shown 2 Einzelleiterabschnitten 8th , which in the example shown after 1 lying in the same plane laterally from the ladder section 3 stand by and join together in these. This results in a Y-shaped arrangement. The diameter of the fiber optic sections 8th as well as the ladder section 3 is preferably the same everywhere, as well as the preferably round cross-sectional shape.

Dem Lichtleiter 2 zugeordnet ist eine Lichtquelleneinheit 9 umfassend zwei Lichtquellen 10, bei denen es sich vorzugsweise um LEDs handelt, wobei die Lichtquellen 10 im gezeigten Beispiel auf einem gemeinsamen Träger 11, z. B. eine Leiterplatte, angeordnet sind. Die Lichtquellen 10 strahlen bei Betrieb Licht ab, das über die Einkoppelflächen 12, also die Stirnflächen, in die Einzelleiterabschnitte 8 eingekoppelt wird und über die Einzelleiterabschnitte 8 in den Leiterabschnitt 3 geführt wird, wo es über die Optik 4 zur Seite hin ausgekoppelt beziehungsweise abgestrahlt wird. Ersichtlich liegen die Einkoppelflächen 12 in einer Ebene, so dass auch die Lichtquellen 10 einfach angeordnet werden können.The light guide 2 assigned is a light source unit 9 comprising two light sources 10 , which are preferably LEDs, wherein the light sources 10 in the example shown on a common carrier 11 , z. B. a circuit board are arranged. The light sources 10 emit light when operating, via the coupling surfaces 12 , So the faces, in the Einzelleiterabschnitte 8th is coupled and over the Einzelleiterabschnitte 8th in the ladder section 3 is guided, where it is about the optics 4 is coupled out or emitted to the side. The coupling surfaces are obvious 12 in a plane, so that too the light sources 10 can be easily arranged.

Da hier zwei Lichtquellen 10 verwendet werden, ist es folglich möglich, trotz gleichem, kleinem Einkoppelquerschnitt an den Einkoppelflächen 12 doppelt so viel Licht im Lichtleiter 2 zu führen respektive über die Optik 4 auszukoppeln, als bei Verwendung nur einer Lichtquelle.There are two light sources here 10 be used, it is therefore possible, despite the same small Einkoppelquerschnitt at the coupling surfaces 12 twice as much light in the light guide 2 to lead respectively on the optics 4 decouple than when using only one light source.

2 zeigt ein weiteres Ausführungsbeispiel einer Beleuchtungseinrichtung 1, wobei für gleiche Bauteile gleiche Bezugszeichen verwendet werden. Auch hier ist ein Lichtleiter 2 vorgesehen, bestehend aus dem Leiterabschnitt 3 mit der Optik 4 in Form der Oberflächenstrukturierung 5, sowie den beiden Einzelleiterabschnitten 8, die auch hier in einer gemeinsamen, wiederum in der Zeichenebene liegenden Ebene verlaufen und gemeinsam in den Leiterabschnitt 3 münden. Auch hier bildet folglich der Lichteinkoppelabschnitt 7 mit dem Leiterabschnitt 3 eine Y-Form. Jedoch verlaufen hier die Einzelleiterabschnitte 8 nicht zu einer Seite hin, sondern weiten sich quasi nach hinten hin auf. Die Lichteinkoppelflächen 12 liegen wiederum in einer Ebene, so dass auch die Lichtquellen 10 in einer Ebene angeordnet und z. B. wiederum an einer Leiterplatte 11, die Teil der Leuchteinheit 9 ist, angeordnet werden können. Wiederum handelt es sich hierbei bevorzugt um LEDs. 2 shows a further embodiment of a lighting device 1 , wherein like reference numerals are used for the same components. Here too is a light guide 2 provided, consisting of the conductor section 3 with the optics 4 in the form of surface structuring 5 , as well as the two individual conductor sections 8th which also run here in a common, again in the plane lying plane and together in the ladder section 3 lead. Here, too, forms the Lichteinkoppelabschnitt 7 with the ladder section 3 a Y shape. However, here run the Einzelleiterabschnitte 8th not to one side, but expand to the rear. The light coupling surfaces 12 lie in turn in a plane, so that the light sources 10 arranged in a plane and z. B. turn to a circuit board 11 , which is part of the lighting unit 9 is, can be arranged. Again, these are preferably LEDs.

3 zeigt schließlich eine weitere Ausführungsform einer Beleuchtungseinrichtung 1, umfassend einen Lichtleiter 2 nebst zugeordneter Leuchteinheit 9. Bei dieser Ausgestaltung verläuft der Lichtleiter 2 jedoch nicht in einer Ebene. Vielmehr laufen die beiden Einzelleiterabschnitte 8 in 3 nach unten hin weg, sie sind voneinander beabstandet, während der Leiterabschnitt 3 in 3 horizontal verläuft. Wiederum ergibt sich quasi eine Y-Form, da auch hier die Einzelleiterabschnitte 8 wiederum gemeinsam in den Leiterabschnitt 3 münden, jedoch keine zweidimensionale, sondern eine dreidimensionale Form. Gleichwohl liegen die Lichteinkoppelflächen 12 auch hier in einer Ebene, so dass die Lichtquellen 10 auch in einer Ebene an einem gemeinsamen Träger 11 angeordnet werden können. 3 finally shows a further embodiment of a lighting device 1 comprising a light guide 2 together with assigned light unit 9 , In this embodiment, the light guide runs 2 but not in one plane. Rather, the two individual conductor sections run 8th in 3 downwards, they are spaced apart, while the ladder section 3 in 3 runs horizontally. Again, this results in a kind of Y-shape, as here, too, the Einzelleiterabschnitte 8th again together in the ladder section 3 lead, but not a two-dimensional, but a three-dimensional shape. Nevertheless, the light coupling surfaces lie 12 even here in a plane, so the light sources 10 also in one plane on a common carrier 11 can be arranged.

Anstelle eines Tagfahrlichts könnte auch ein Blinklicht, also ein Blinker realisiert werden, Hierzu wären als Lichtquellen solche zu verwenden, die gelbes Licht emittieren, also z. B. gelbe LEDs. Diese würden zur Realisierung des Blinklichts bei Bedarf intermittierend angesteuert, so dass sie blinkend ihr emittiertes Licht in die Einzelleiterabschnitte einkoppeln. Ein lichtstarker Blinker kann somit auf einfache Weise realisiert werden.Instead of a daytime running light, a flashing light, so a turn signal could be realized, this would be to use as light sources such that emit yellow light, so z. B. yellow LEDs. These would be intermittently driven to realize the flashing light, if necessary, so that they blink flashing their emitted light in the Einzelleiterabschnitte. A high-intensity turn signal can thus be realized in a simple manner.

Ferner ist es möglich, in der Farbe unterschiedliches Licht emittierende Lichtquellen 10, also LEDs zu verwenden, und z. B. dem einen Einzelleiterabschnitt 8 eine weißes Licht emittierende LED und dem anderen Einzelleiterabschnitt 8 eine gelbes Licht emittierende LED zuzuordnen, so dass mittels der einen LED z. B. ein Tagfahrlicht gebildet wird, während die andere LED einen Blinker bildet. Je nach Bedarf wird die eine oder die andere Lichtquelle betrieben.Further, it is possible to use different light emitting light sources in color 10 So to use LEDs, and z. B. the one Einzelleiterabschnitt 8th a white light emitting LED and the other single conductor section 8th Assign a yellow light emitting LED, so that by means of a LED z. B. a daytime running light is formed, while the other LED forms a turn signal. As needed, one or the other light source is operated.

Alternativ wäre es auch denkbar, jedem Einzelleiterabschnitt jeweils z. B. eine weißes Licht und eine gelbes Licht emittierende Lichtquelle bzw. LED zuzuordnen, so dass mittels der Beleuchtungseinrichtung sowohl ein Tagfahrlicht als auch ein Blinklicht realisiert ist, jedoch jeweils mittels zweier Lichtquellen, so dass in jeder Betriebsart die doppelt Lichtmenge eingekoppelt werden kann. Wird z. B. die Blinfunktion benötigt, so werden die weißes Licht emittierenden Lichtquelle aus- und die gelbes Licht emittierenden Lichtquellen eingeschaltet, und umgekehrt, was durch geeignete Ansteuerung und Anordnung der Lichtquellen am Träger ohne weiteres möglich ist.Alternatively, it would also be conceivable, each Einzelleiterabschnitt each z. B. assign a white light and a yellow light emitting light source or LED, so that by means of the illumination device both a daytime running light and a flashing light is realized, but each by means of two light sources, so that in each mode, the double amount of light can be coupled. If z. B. the Blinfunktion needed, the white light emitting light source off and the yellow light emitting light sources are turned on, and vice versa, which is readily possible by suitable control and arrangement of the light sources on the carrier.

Grundsätzlich sind mittels der erfindungsgemäßen Beleuchtungseinrichtung natürlich aus andere Leuchten als Tagfahrlicht und Blinker realisierbar.Basically, by means of the illumination device according to the invention of course other lights as daytime running lights and turn signals can be realized.

Claims (5)

Kraftfahrzeugbeleuchtungseinrichtung zur Innenraumbeleuchtung oder zur Außenbeleuchtung, umfassend einen Lichtleiter mit einer randseitig vorgesehenen Optik zum seitlichen Auskoppeln von mittels einer Lichtquelle eingekoppelten Lichts, dadurch gekennzeichnet, dass der Lichtleiter (2) einen Lichteinkoppelabschnitt (7) bestehend aus mehreren Einzelleiterabschnitten (8), denen jeweils eine Lichtquelle (10) zugeordnet ist, die in einen gemeinsamen, die Optik (4) aufweisenden Leiterabschnitt (3) münden, aufweist.Motor vehicle lighting device for interior lighting or for exterior lighting, comprising a light guide with an optics provided at the edge for the lateral coupling out of light coupled in by means of a light source, characterized in that the light guide ( 2 ) a Lichteinkoppelabschnitt ( 7 ) consisting of several individual conductor sections ( 8th ), each having a light source ( 10 ), which in a common, the optics ( 4 ) conductor section ( 3 ), has. Kraftfahrzeugbeleuchtungseinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass zwei Einzelleiterabschnitte (8) vorgesehen sind, die mit dem Leiterabschnitt (3) eine Y-förmiger Anordnung bilden.Automotive lighting device according to claim 1, characterized in that two individual conductor sections ( 8th ) provided with the conductor section ( 3 ) form a Y-shaped arrangement. Kraftfahrzeugbeleuchtungseinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Einzelleiterabschnitte (8) gebogen in den Leiterabschnitt (3) übergehen.Automotive lighting device according to claim 1 or 2, characterized in that the individual conductor sections ( 8th ) bent in the ladder section ( 3 ) pass over. Kraftfahrzeugbeleuchtungseinrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Enden (12) der Einzelleiterabschnitte (8) in einer gemeinsamen Ebene liegen.Automotive lighting device according to one of the preceding claims, characterized in that the ends ( 12 ) of the individual ladder sections ( 8th ) lie in a common plane. Kraftfahrzeugbeleuchtungseinrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Lichtquellen (10) LEDs sind.Automotive lighting device according to one of the preceding claims, characterized in that the light sources ( 10 ) LEDs are.
DE102011009100A 2011-01-21 2011-01-21 Illumination device e.g. ceiling light, for illuminating lighting equipments e.g. instruments, in interior of motor car, has light source emitting light, where light source opens into conductor portion with optics Withdrawn DE102011009100A1 (en)

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