DE10205776A1 - Headlamp for vehicle has annular light conducting element for forming boundary light and boundary light is additionally formed by light from light source radiated via reflector. - Google Patents

Headlamp for vehicle has annular light conducting element for forming boundary light and boundary light is additionally formed by light from light source radiated via reflector.

Info

Publication number
DE10205776A1
DE10205776A1 DE10205776A DE10205776A DE10205776A1 DE 10205776 A1 DE10205776 A1 DE 10205776A1 DE 10205776 A DE10205776 A DE 10205776A DE 10205776 A DE10205776 A DE 10205776A DE 10205776 A1 DE10205776 A1 DE 10205776A1
Authority
DE
Germany
Prior art keywords
light
reflector
boundary
light source
headlamp
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.)
Granted
Application number
DE10205776A
Other languages
German (de)
Other versions
DE10205776B4 (en
DE10205776B9 (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
Publication of DE10205776B4 publication Critical patent/DE10205776B4/en
Application granted granted Critical
Publication of DE10205776B9 publication Critical patent/DE10205776B9/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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

The device has a reflector (2) for dipped and/or main beam light and an annular light conducting element (6) forming a boundary light that first passes approximately fully over the periphery of the headlamp, that secondly receives light emitted by a light source and whereby thirdly light emanates from its external surface over its course. The boundary light is additionally formed by light from the light source that is radiated via the reflector.

Description

Die Erfindung bezieht sich auf einen Scheinwerfer für Fahrzeuge mit den im Oberbegriff des Patentanspruchs 1 angegebenen Merkmalen. The invention relates to a headlight for vehicles with the The preamble of claim 1 features specified.

Ein derartiger Scheinwerfer ist aus der DE 196 52 159 A 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. Such a headlight is known from DE 196 52 159 A. A special Problem arises due to the thermal load on the light guide, which in usually consists of plastic for weight and cost reasons. This Burden is twofold. On the one hand, they shine for high beam and / or low beam provided light sources heat. On the other hand, this also does the light source for the The position lamp itself, especially when the light guide element alone The position lamp forms. The minimum values of the Illuminance requires a correspondingly strong and therefore heat-supplying Light source. Especially in the one-sided known from DE 196 52 159 A. Coupling light into the light-guiding element requires a particularly strong lamp.

Der Erfindung liegt die Aufgabe zu Grunde, einen Scheinwerfer der eingangs genannten Art zu schaffen, bei dem das Lichtleitelement thermisch wesentlich weniger belastet ist. The invention is based on the object, a headlamp of the beginning to create the type mentioned, in which the light-guiding element thermally significantly less is burdened.

Diese Aufgabe wird durch die Merkmale des Patentanspruchs 1 gelöst. This object is achieved by the features of patent 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 load is reduced by two features. For one thing, the Front position lamp function additionally or even predominantly through the above light emitted by the reflector. On the other hand, only a part of the Coupled light of the light source into the light guide.

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 of Light that is reflected in the reflector can be controlled even better. from that there is also a correspondingly targeted setting of the thermal load of the light guide element, since essentially only the light entering there causes thermal stress.

Die im Patentanspruch 3 angegebenen Merkmale dienen der weiteren Verbesserung diese Zusammenspiels aus Zusatzreflektor und der in das Lichtleitelement eintretenden Lichtmenge. Durch den Rand des Reflektors wird in das Lichtleitelement eintretende Licht gesteuert. The features specified in claim 3 serve the further Improvement of this interaction of additional reflector and that in the light guide element amount of light entering. Through the edge of the reflector is in the light guide controlled incoming light.

Schließlich kann durch die Merkmale des Patentanspruchs 4 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, by the features of claim 4, the thermal Stress can be kept low while maintaining the visual appearance is comparative. If the light enters the light guide at both ends, uniform light radiation can be easily achieved over the entire course of the light guide element.

In der Zeichnung sind Ausführungsbeispiele der Erfindung dargestellt. Es zeigt Exemplary embodiments of the invention are shown in the drawing. It shows

Fig. 1 einen Scheinwerfer für Fahrzeuge von vorne mit einer erfindungsgemäßen Begrenzungsleuchte, FIG. 1 shows a headlamp for a vehicle from the front with an inventive position lamp,

Fig. 2 die Seitenansicht des Scheinwerfers von Fig. 1. FIG. 2 shows the side view of the headlight from FIG. 1.

Der aus zwei Scheinwerfern 1' und 1" bestehende, in Fig. 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 des Begrenzungslichts bilden. The two headlamps 1 'double headlight 1 shown and 1 "existing in FIG. 1 includes in a housing G a cover 3 and in each case a reflector 2 as well as light sources 2' for low and / or high beams. In each headlight 1 'and 1 "sits on the edge of the reflector 2 and an additional reflector 4 and conceals it in the view from the front, a light source 5 , both of which together form the main component of the limiting light.

Wie in Fig. 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 (Fig. 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 can be seen in FIG. 2, the additional reflector 4 reflects the light from the light source 5 into the reflector 2 . The light emerging from this essentially realizes the position light function. Furthermore, a light guide element 6 , which supports the limiting light function, runs on the outline of each headlight 1 'and 1 ". For this purpose, the light from the light source 5 is coupled into the two ends 6 and 6 " of the light guide element 6 ( FIG. 3). This light emerges from the surface over the length of the light-guiding element 6 . The amount of light entering the light guide element is controlled by the shape of the additional reflector. It can be set so that it and thus the thermal load on the light-guiding element 6 is low. This results in the lowest possible thermal load on the light-guiding element 6 .

Claims (4)

1. Scheinwerfer für Fahrzeuge mit einem Reflektor für Abblend- und/oder Fernlicht und mit einem ringförmigen Lichtleitelement zur Bildung einer Begrenzungsleuchte, das erstens annähernd vollständig über den Umriss des Scheinwerfers verläuft, das zweitens das von einer Lichtquelle ausgesandte Licht aufnimmt und bei dem drittens Licht über seinem Verlauf aus seiner Mantelfläche austritt, dadurch gekennzeichnet, dass die Begrenzungsleuchte gebildet ist zusätzlich durch Licht der Lichtquelle (5), das über den Reflektor (2) ausgestrahlt ist. 1. Headlights for vehicles with a reflector for dipped and / or high beam and with a ring-shaped light-guiding element to form a position lamp, which firstly runs almost completely over the outline of the headlamp, secondly receives the light emitted by a light source and thirdly emerges from its lateral surface over its course, characterized in that the position lamp is additionally formed by light from the light source ( 5 ) which is emitted via the reflector ( 2 ). 2. Scheinwerfer nach Anspruch 1, gekennzeichnet durch eine Zusatzreflektor (4), der das Licht der Lichtquelle(5) überwiegend in den Reflektor (2) reflektiert. 2. Headlight according to claim 1, characterized by an additional reflector (4) which reflects the light from the light source (5), primarily in the reflector (2). 3. Scheinwerfer nach Anspruch 2, gekennzeichnet durch eine derartige Anordnung und/oder Form des Zusatzreflektors, dass das Licht der Lichtquelle durch den Rand des Reflektors beeinflusst in das Lichtleitelement (6) eintritt. 3. Headlamp according to claim 2, characterized by such an arrangement and / or shape of the additional reflector that the light from the light source influenced by the edge of the reflector enters the light guide element ( 6 ). 4. Scheinwerfer nach Anspruch 3, dadurch gekennzeichnet, dass das Licht an beiden Enden (6', 6") in das Lichtleitelement (6) eintritt. 4. Headlight according to claim 3, characterized in that the light enters the light-guiding element ( 6 ) at both ends ( 6 ', 6 ").
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
DE10205776A DE10205776B9 (en) 2002-02-13 2002-02-13 Headlight of a vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE10205776A DE10205776B9 (en) 2002-02-13 2002-02-13 Headlight of a vehicle

Publications (3)

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

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1541414A2 (en) 2003-12-12 2005-06-15 Volkswagen Aktiengesellschaft Headlamp for a vehicle
DE102004003402A1 (en) * 2004-01-23 2005-08-11 Bayerische Motoren Werke Ag vehicle headlights
EP1612474A1 (en) * 2004-07-02 2006-01-04 Valeo Vision Signaling and/or lighting assembly for vehicles
FR2960939A1 (en) * 2010-06-08 2011-12-09 Peugeot Citroen Automobiles Sa Lighting device i.e. daytime running light or lamp type device, for optical unit in motor vehicle, has collection part arranged to collect sampled part of luminous rays such that rays are participated in its illumination
WO2014180813A1 (en) * 2013-05-06 2014-11-13 Hella Kgaa Hueck & Co. Lighting device for vehicles
DE102015115051B4 (en) 2014-10-01 2018-05-09 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Automotive lighting assembly with an inner lens for combined daytime running lights and position light functions

Families Citing this family (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

Family Cites Families (6)

* 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
DE19652159B4 (en) * 1996-12-14 2006-05-18 Automotive Lighting Reutlingen Gmbh Lighting device for vehicles
DE19739173A1 (en) * 1997-09-06 1999-03-11 Hella Kg Hueck & Co Signal light for vehicles
DE19740315C1 (en) * 1997-09-13 1999-02-18 Bosch Gmbh Robert Motor vehicle headlamp with lens arrangement
DE19811961B4 (en) * 1998-03-19 2008-03-27 Automotive Lighting Reutlingen Gmbh vehicle headlights
DE19838224C2 (en) * 1998-08-22 2000-11-09 Daimler Chrysler Ag Front light assembly for motor vehicles

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1541414A2 (en) 2003-12-12 2005-06-15 Volkswagen Aktiengesellschaft Headlamp for a vehicle
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
EP1557605A3 (en) * 2004-01-23 2005-12-21 Bayerische Motoren Werke Aktiengesellschaft Headlamp for automotive vehicle
EP1612474A1 (en) * 2004-07-02 2006-01-04 Valeo Vision Signaling and/or lighting assembly for vehicles
FR2872564A1 (en) * 2004-07-02 2006-01-06 Valeo Vision Sa LIGHTING AND / OR SIGNALING DEVICE FOR MOTOR VEHICLE
US7252420B2 (en) 2004-07-02 2007-08-07 Valeo Vision Lighting and/or signalling device for an automobile
FR2960939A1 (en) * 2010-06-08 2011-12-09 Peugeot Citroen Automobiles Sa Lighting device i.e. daytime running light or lamp type device, for optical unit in motor vehicle, has collection part arranged to collect sampled part of luminous rays such that rays are participated in its illumination
WO2014180813A1 (en) * 2013-05-06 2014-11-13 Hella Kgaa Hueck & Co. Lighting device for vehicles
US10018770B2 (en) 2013-05-06 2018-07-10 HELLA GmbH & Co. KGaA Lighting device for vehicles
DE102015115051B4 (en) 2014-10-01 2018-05-09 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Automotive lighting assembly with an inner lens for combined daytime running lights and position light functions

Also Published As

Publication number Publication date
DE10205776B4 (en) 2008-08-07
DE10205776B9 (en) 2009-06-10

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