DE10205776B9 - Headlight of a vehicle - Google Patents

Headlight of a vehicle Download PDF

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Publication number
DE10205776B9
DE10205776B9 DE10205776A DE10205776A DE10205776B9 DE 10205776 B9 DE10205776 B9 DE 10205776B9 DE 10205776 A DE10205776 A DE 10205776A DE 10205776 A DE10205776 A DE 10205776A DE 10205776 B9 DE10205776 B9 DE 10205776B9
Authority
DE
Germany
Prior art keywords
light
light source
reflector
headlight
annular
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.)
Expired - Fee Related
Application number
DE10205776A
Other languages
German (de)
Other versions
DE10205776A1 (en
DE10205776B4 (en
Inventor
Carsten Befelein
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Priority to DE10205776A priority Critical patent/DE10205776B9/en
Publication of DE10205776A1 publication Critical patent/DE10205776A1/en
Application granted granted Critical
Publication of DE10205776B4 publication Critical patent/DE10205776B4/en
Publication of DE10205776B9 publication Critical patent/DE10205776B9/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • 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
    • B60Q1/0029—Spatial arrangement
    • B60Q1/0041—Spatial arrangement of several lamps in relation to each other
    • B60Q1/0052—Spatial arrangement of several lamps in relation to each other concentric
    • 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
    • F21S41/36—Combinations of two or more separate reflectors
    • 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
    • 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
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/237—Light guides characterised by the shape of the light guide rod-shaped
    • 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
    • F21S43/242—Light guides characterised by the emission area
    • F21S43/245—Light guides characterised by the emission area emitting light from one or more of its major surfaces
    • 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
    • F21S43/247—Light guides with a single light source 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
    • G02B6/0005—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 of the fibre type
    • G02B6/0006—Coupling light into the fibre
    • 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
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • F21S43/31—Optical layout thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F21W2103/10—Position lights

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

Fahrzeugscheinwerfer
mit einem Reflektor (2) und einer Lichtquelle (2') für Abblend- und/oder Fernlicht,
mit einer weiteren Lichtquelle (5) und
mit einem ringförmigen Lichtleitelement (6) zur Bildung einer Begrenzungsleuchte, das erstens annähernd vollständig über den Umriss des Scheinwerfers verläuft, das zweitens von der weiteren Lichtquelle (5) ausgesandtes Licht aufnimmt und bei dem drittens Licht über seinem Verlauf aus seiner Mantelfläche austritt,
dadurch gekennzeichnet,
dass die weitere Lichtquelle (5) und der Reflektor (2) derart angeordnet und ausgeführt sind, dass sie zusammen mit dem ringförmigen Lichtleitelement (6) die Begrenzungsleuchte bilden, indem der Reflektor (2) Licht der weiteren Lichtquelle (5) ausstrahlt.vehicle headlights
with a reflector (2) and a light source (2 ') for low and / or high beam,
with a further light source (5) and
with an annular light-guiding element (6) for forming a limiting light, which firstly passes approximately completely over the outline of the headlight, secondly receives light emitted by the further light source (5) and at the third light exits its lateral surface over its course,
characterized,
in that the further light source (5) and the reflector (2) are arranged and configured in such a way that together with the annular light guide element (6) they form the marker light by the reflector (2) emitting light from the further light source (5).

Figure 00000001
Figure 00000001

Description

Die Erfindung bezieht sich auf einen Scheinwerfer eines Fahrzeuges mit den im Oberbegriff des Patentanspruchs 1 angegebenen Merkmalen.The The invention relates to a headlight of a vehicle with the in the preamble of claim 1 specified characteristics.

Ein derartiger Scheinwerfer ist aus der DE 196 52 159 A1 bekannt. Ein besonderes Problem ergibt sich aufgrund der thermischen Belastung für den Lichtleiter, der in der Regel aus Gewichts- und Kostengründen aus Kunststoff besteht. Diese Belastung ist eine zweifache. Zum einen strahlen die für Fern- und/oder Abblendlicht vorgesehenen Lichtquellen Wärme ab. Zum andern tut dies auch die Lichtquelle für die Begrenzungsleuchte selbst, insbesondere dann, wenn das Lichtleitelement allein die Begrenzungsleuchte bildet. Die dabei zu erreichenden Mindestwerte der Beleuchtungsstärke erfordern eine entsprechend starke und dadurch wärmeliefernde Lichtquelle. Gerade bei der aus der DE 196 52 159 A bekannten einseitigen Lichteinkopplung in das Lichtleitelement erfordert dies eine besonders starke Lampe. Auch aus der DE 197 40 315 C1 ist ein Scheinwerfer bekannt, bei welchem Licht einer Lichtquelle zum Teil über einen Reflektor abgestrackt, zum anderen Teil in einen Lichtleiter eingekoppelt wird.Such a headlight is from the DE 196 52 159 A1 known. A particular problem arises due to the thermal load on the optical fiber, which is usually made of plastic for weight and cost reasons. This burden is two times. On the one hand, the light sources provided for the remote and / or dipped beam emit heat. On the other hand, this also does the light source for the marker light itself, especially when the light guide alone forms the marker light. The minimum illuminance values to be achieved require a correspondingly strong and therefore heat-emitting light source. Especially with the from the DE 196 52 159 A known unilateral light coupling into the light guide this requires a particularly strong lamp. Also from the DE 197 40 315 C1 a headlamp is known in which light of a light source is partially broken off by a reflector, coupled to the other part in an optical waveguide.

Der Erfindung liegt die Aufgabe zu Grunde, einen Scheinwerfer der eingangs genannten Art zu schaffen, bei dem das Lichtleitelement thermisch wesentlich weniger belastet ist.Of the Invention is based on the object, a headlight of the beginning to create said type, wherein the light-guiding element thermally much less burdened.

Diese Aufgabe wird durch die Merkmale des Patentanspruchs 1 gelöst.These The object is solved by the features of claim 1.

Die thermische Belastung wird durch zwei Merkmale reduziert. Zum einen wird die Begrenzungsleuchtenfunktion zusätzlich oder sogar überwiegend durch das über den Reflektor abgestrahlte Licht übernommen. Zum andern wird nur ein Teil des Lichts der Lichtquelle in das Lichtleitelement eingekoppelt.The Thermal stress is reduced by two features. On the one hand the parking lamp function becomes additional or even prevalent through the over The light emitted by the reflector is taken over. To the other will only part of the light of the light source in the light guide coupled.

Durch den im Patentanspruch 2 genannten Zusatzreflektor kann der Anteil des Lichts, der in den Reflektor reflektiert wird, noch besser gesteuert werden. Daraus ergibt sich auch eine entsprechend gezielte Einstellung der thermischen Belastung des Lichtleitelements, da im wesentlichen nur das dort eintretende Licht die thermische Belastung hervorruft.By the additional reflector mentioned in claim 2, the proportion the light reflected in the reflector is even better controlled become. This also results in a correspondingly targeted attitude the thermal load of the light guide, since substantially only the light entering there causes the thermal load.

Schließlich kann durch die Merkmale des Patentanspruchs 3 die thermische Belastung gering gehalten werden, während gleichzeitig das optische Erscheinungsbild vergleichsmäßig ist. Tritt das Licht an beiden Enden in das Lichtleitelement eintritt, läßt sich problemlos eine gleichmäßige Lichtabstrahlung über den gesamten Verlauf des Lichtleitelements erzielen.Finally, can by the features of claim 3, the thermal load be kept low while at the same time the visual appearance is comparative. If the light enters the light-conducting element at both ends, can be easily a uniform light emission over the achieve the entire course of the light guide.

In der Zeichnung sind Ausführungsbeispiele der Erfindung dargestellt. Es zeigtIn the drawing are embodiments of Invention shown. It shows

1 einen Scheinwerfer für Fahrzeuge von vorne mit einer erfindungsgemäßen Begrenzungsleuchte, 1 a headlamp for vehicles from the front with a marker lamp according to the invention,

2 die Seitenansicht des Scheinwerfers von 1. 2 the side view of the headlamp of 1 ,

Der aus zwei Scheinwerfern 1' und 1'' bestehende, in 1 gezeigte Doppelscheinwerfer 1 enthält in einem Gehäuse G eine Abdeckscheibe 3 und jeweils einen Reflektor 2 sowie Lichtquellen 2' für Abblend- und/oder Fernlicht. In jedem Scheinwerfer 1' und 1'' sitzt am Rande des Reflektors 2 ein Zusatzreflektor 4 und durch diesen in der Ansicht von vorne verdeckt, eine Lichtquelle 5, die beide zusammen den Hauptbestandteil der Begrenzungsleuchte bilden.The from two headlights 1' and 1'' existing, in 1 shown twin headlights 1 contains in a housing G a cover plate 3 and one reflector each 2 as well as light sources 2 ' for dipped and / or high beam. In every headlight 1' and 1'' sits on the edge of the reflector 2 an additional reflector 4 and obscured by this in the view from the front, a light source 5 Both together make up the main component of the marker light.

Wie in 2 zu sehen, reflektiert der Zusatzreflektor 4 das Licht der Lichtquelle 5 in den Reflektor 2. Das daraus austretende Licht realisiert im wesentlichen die Begrenzungslichtfunktion. Ferner verläuft am Umriss jedes Scheinwerfers 1' und 1'' ein Lichtleitelement 6, das die Begrenzungslichtfunktion unterstützt. Hierzu wird das Licht der Lichtquelle 5 in die beiden Enden 6' und 6'' des Lichtleitelements 6 eingekoppelt (3). Dieses Licht tritt über die Länge des Lichtleitelements 6 aus der Oberfläche aus. Die in das Lichtleitelement eintretende Lichtmenge ist durch die Form des Zusatzreflektors gesteuert. Sie kann so eingestellt sein, dass sie und damit die thermische Belastung des Lichtleitelements 6 gering ist. Dadurch ergibt sich eine geringst mögliche thermische Belastung des Lichtleitelements 6.As in 2 to see the additional reflector reflects 4 the light of the light source 5 in the reflector 2 , The light emerging therefrom essentially realizes the limiting light function. Furthermore, runs on the outline of each headlight 1' and 1'' a light guide 6 that supports the limiting light function. For this purpose, the light of the light source 5 in the two ends 6 ' and 6 '' of the light-guiding element 6 coupled in ( 3 ). This light occurs over the length of the light guide 6 out of the surface. The amount of light entering the light guide is controlled by the shape of the auxiliary reflector. It can be adjusted so that they and thus the thermal load of the light guide 6 is low. This results in a lowest possible thermal load of the light guide 6 ,

Claims (3)

Fahrzeugscheinwerfer mit einem Reflektor (2) und einer Lichtquelle (2') für Abblend- und/oder Fernlicht, mit einer weiteren Lichtquelle (5) und mit einem ringförmigen Lichtleitelement (6) zur Bildung einer Begrenzungsleuchte, das erstens annähernd vollständig über den Umriss des Scheinwerfers verläuft, das zweitens von der weiteren Lichtquelle (5) ausgesandtes Licht aufnimmt und bei dem drittens Licht über seinem Verlauf aus seiner Mantelfläche austritt, dadurch gekennzeichnet, dass die weitere Lichtquelle (5) und der Reflektor (2) derart angeordnet und ausgeführt sind, dass sie zusammen mit dem ringförmigen Lichtleitelement (6) die Begrenzungsleuchte bilden, indem der Reflektor (2) Licht der weiteren Lichtquelle (5) ausstrahlt.Vehicle headlight with a reflector ( 2 ) and a light source ( 2 ' ) for dipped beam and / or main beam, with another light source ( 5 ) and with an annular light guide element ( 6 ) to form a marker lamp which, firstly, passes almost completely over the outline of the headlight, and secondly, from the further light source ( 5 ) receives light emitted and at the third light exits its course over its course from its lateral surface, characterized in that the further light source ( 5 ) and the reflector ( 2 ) are arranged and designed in such a way that together with the annular light-guiding element ( 6 ) form the marker lamp by the reflector ( 2 ) Light of the further light source ( 5 ) emits. Scheinwerfer nach Anspruch 1, gekennzeichnet durch einen Zusatzreflektor (4), der das Licht der Lichtquelle (5) überwiegend in den Reflektor (2) reflektiert.Headlamp according to Claim 1, characterized by an additional reflector ( 4 ), the light of the light source ( 5 ) predominantly in the reflector ( 2 ) reflected. Scheinwerfer nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Licht an beiden Enden (6', 6'') in das Lichtleitelement (6) eintritt.Headlamp according to one of the preceding claims, characterized in that the light at both ends ( 6 ' . 6 '' ) in the light guide ( 6 ) entry.
DE10205776A 2002-02-13 2002-02-13 Headlight of a vehicle Expired - Fee Related DE10205776B9 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Publications (3)

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DE10205776A1 DE10205776A1 (en) 2003-09-04
DE10205776B4 DE10205776B4 (en) 2008-08-07
DE10205776B9 true DE10205776B9 (en) 2009-06-10

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010055332A1 (en) * 2010-12-21 2012-06-21 Volkswagen Ag Lighting device e.g. head light for vehicle e.g. motor car, has auxiliary light source provided in housing such that light emission is provided to interior of housing and emitted light beams are not directly emitted on light cover lens

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004017448A1 (en) 2003-12-12 2005-07-21 Volkswagen Ag Headlamp for motor vehicle has light source in housing and annular light outlet opening with inner radius at least half its outer radius for light generated by light source to emanate
DE102004003402A1 (en) * 2004-01-23 2005-08-11 Bayerische Motoren Werke Ag vehicle headlights
FR2872564B1 (en) 2004-07-02 2007-03-16 Valeo Vision Sa LIGHTING AND / OR SIGNALING DEVICE FOR MOTOR VEHICLE
FR2960939B1 (en) * 2010-06-08 2012-07-27 Peugeot Citroen Automobiles Sa LIGHT-GUIDING LIGHTING DEVICE SUPPLIED IN PART BY LIGHT LEVELED AT ITS LIGHT REFLECTOR
DE102013104590A1 (en) * 2013-05-06 2014-11-06 Hella Kgaa Hueck & Co. Lighting device for vehicles
US9688034B2 (en) 2014-10-01 2017-06-27 GM Global Technology Operations LLC Automotive light assembly with inner lens for combined daytime running light and position light functions

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19652159A1 (en) * 1996-12-14 1998-06-18 Bosch Gmbh Robert Headlight system for vehicle with optical-fibre elements
DE19739173A1 (en) * 1997-09-06 1999-03-11 Hella Kg Hueck & Co Signal light for vehicles
DE19811961A1 (en) * 1998-03-19 1999-09-23 Bosch Gmbh Robert Headlamp for vehicle with reflector inserted for light function
DE19838224A1 (en) * 1998-08-22 2000-02-24 Daimler Chrysler Ag Front lamp arrangement for cars has additional lamp devices with optic fibre element conducting light from entry side to exit side around periphery of headlamp unit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2085569A (en) * 1980-10-18 1982-04-28 Yorkshire Lamp Co Ltd Combined Headlamp and Sidelight for Vehicle
DE19740315C1 (en) * 1997-09-13 1999-02-18 Bosch Gmbh Robert Motor vehicle headlamp with lens arrangement

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19652159A1 (en) * 1996-12-14 1998-06-18 Bosch Gmbh Robert Headlight system for vehicle with optical-fibre elements
DE19739173A1 (en) * 1997-09-06 1999-03-11 Hella Kg Hueck & Co Signal light for vehicles
DE19811961A1 (en) * 1998-03-19 1999-09-23 Bosch Gmbh Robert Headlamp for vehicle with reflector inserted for light function
DE19838224A1 (en) * 1998-08-22 2000-02-24 Daimler Chrysler Ag Front lamp arrangement for cars has additional lamp devices with optic fibre element conducting light from entry side to exit side around periphery of headlamp unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010055332A1 (en) * 2010-12-21 2012-06-21 Volkswagen Ag Lighting device e.g. head light for vehicle e.g. motor car, has auxiliary light source provided in housing such that light emission is provided to interior of housing and emitted light beams are not directly emitted on light cover lens

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Publication number Publication date
DE10205776A1 (en) 2003-09-04
DE10205776B4 (en) 2008-08-07

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