EP2223010B1 - Projecteur pour véhicules - Google Patents

Projecteur pour véhicules Download PDF

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Publication number
EP2223010B1
EP2223010B1 EP08846610.7A EP08846610A EP2223010B1 EP 2223010 B1 EP2223010 B1 EP 2223010B1 EP 08846610 A EP08846610 A EP 08846610A EP 2223010 B1 EP2223010 B1 EP 2223010B1
Authority
EP
European Patent Office
Prior art keywords
light
led
optical unit
headlamp
aperture angle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP08846610.7A
Other languages
German (de)
English (en)
Other versions
EP2223010A1 (fr
Inventor
Mirco GÖTZ
Franz-Josef Kalze
Michael Kleinkes
Wolfgang Pohlmann
Thomas Vieregge
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hella GmbH and Co KGaA
Original Assignee
Hella GmbH and Co KGaA
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Filing date
Publication date
Application filed by Hella GmbH and Co KGaA filed Critical Hella GmbH and Co KGaA
Publication of EP2223010A1 publication Critical patent/EP2223010A1/fr
Application granted granted Critical
Publication of EP2223010B1 publication Critical patent/EP2223010B1/fr
Active legal-status Critical Current
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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
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
    • 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
    • F21S41/153—Light emitting diodes [LED] arranged in one or more lines arranged in a matrix
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the invention relates to a headlamp for vehicles according to the preamble of patent claim 1.
  • a headlight for vehicles which has a number of LED light sources combined on an LED field.
  • the LED light sources of the LED field can be individually controlled by means of a control device, so that, depending on sensor data of a sensor device detecting the position of an object in the area in front of the vehicle, areas of a predetermined light distribution can be left out in order to prevent undesired glare from the other road user in front of the vehicle prevent.
  • a headlight for vehicles with a single light module, which consists of a number of LED light sources and an upstream optical unit. Several light modules are not combined with one another to produce a predetermined light distribution.
  • a headlamp for vehicles with a light module containing a number of LED light sources and an optical unit is known, the optical unit consisting of a primary and a secondary optical element. Different light distributions can be generated by the different design of the primary optical element. A combination of several light modules is not intended.
  • a headlight with only a single light module containing a number of LED light sources and an optical unit is provided.
  • a headlight is provided for vehicles with several light modules, each of which has a number of LED light sources and an upstream optical unit. To generate a light distribution, however, one of the light modules is movably arranged.
  • a headlight for vehicles which on the one hand has a first light module containing a number of LED light sources and an upstream optical unit and on the other hand a second light module containing a number of LED light sources and an upstream optical unit.
  • the LED light sources are each arranged on a substrate to form an LED field. Due to the fact that the optical units have different imaging characteristics, light bundles with light spots of different sizes can be generated in front of the vehicle, so that a predetermined light distribution, such as low-beam light distribution or motorway light distribution, can be generated by superimposing them. Since at least two optical units are required to generate a single light distribution, the headlight has a relatively large installation space. By superimposing the first light module and the second light module, the low beam light distribution or the motorway light distribution can be generated. A combination of the two light modules is always required to generate the specified light distribution.
  • the object of the present invention is to further develop a headlight for vehicles in such a way that the effort for generating predetermined light distributions which illuminate the vehicle surroundings is reduced, in particular while avoiding glare from objects located in the vehicle apron.
  • the invention has the features of claim 1.
  • the particular advantage of the invention is that only a single light module is required to generate a light distribution.
  • the light module has at least one LED light source and a single optical unit.
  • the space required for generating a light distribution can thus be reduced, which has a particularly favorable effect when there is a need to generate a plurality of light distributions.
  • a first light module has at least a first LED light source and a first optical unit, such that a first light beam is emitted with a relatively wide horizontal and / or vertical opening angle.
  • a second light module has at least one LED light source and an optical unit such that a second light beam is emitted with a relatively narrow horizontal and / or vertical opening angle.
  • the first light beam can advantageously be used to generate a low beam distribution and the second light beam can be used to generate a motorway light distribution and / or a dynamic cornering light distribution.
  • the second light module preferably has an LED field with a plurality of LED light sources arranged in a matrix, the specified additional light distribution (motorway light distribution, cornering light function) can be switched on to the low beam distribution generated by the first light module by controlling the corresponding LED light sources.
  • the type of additional light distribution determines the number and position of the LED light sources controlled in the LED field.
  • a sensor device for detecting objects located in the vehicle apron and a control device for controlling the LED light sources of the second light module are provided, so that the switching on an additional light distribution by controlling the corresponding LED light sources of the second light module as a function of the current position of the object detected by the sensor device in the vehicle apron.
  • the greatest possible illumination of the vehicle apron can thus advantageously take place without dazzling an oncoming road user or road user driving ahead. Further advantages of the invention result from the further subclaims.
  • a headlight for vehicles has a housing 1 in which a first light module 2 containing an LED light source 3 and a first optical unit 4 for generating a basic light distribution 5 are arranged.
  • the LED light source 3 can be configured as an LED chip, which is arranged on a substrate 19.
  • the first optical unit 4 is arranged in the light emission direction 6 in front of the LED light source 3. According to an alternative embodiment, not shown, the first optical unit 4 can also be arranged in the region of the substrate 19 carrying the LED light source 3.
  • a second light module 7 is provided in the housing 1 with a plurality of LED light sources 3 and a second optical unit 8 in front of the same for generating at least one additional light distribution.
  • a first group of LED light sources 3 is combined to form a first LED field 9, so that in cooperation with the second optical unit 8 as additional light distribution a freeway light distribution 10 can be generated.
  • a second LED field 11, which has at least one LED light source 3, is arranged adjacent to the first LED field 9, so that a cornering light function 12 can be generated in cooperation with the second optical unit 8 as additional light distribution.
  • a control device 13 In front of the first light module 2 and the second light module 7 is a control device 13, by means of which the LED light sources 3 of the first light module 2 and the second light module 7 can be individually controlled.
  • a sensor device 14 is provided on the input side of the control device 13 for detecting the position of an object located in the vehicle apron. The sensor data provided by the sensor device 14 are processed in the control device 13, the position of the additional light distribution 10, 12 being changeable as a function of the detected position of the object in the vehicle apron.
  • a switching device 15 is provided on the input side of the control device 13 and is arranged, for example, in the cockpit of the vehicle for manual switching on and off of predetermined light functions.
  • the first light module 2 has only a single LED light source 3, and in cooperation with the first optics unit 4, a first light beam 16 is emitted at a solid angle which has a relatively wide horizontal opening angle ⁇ 1 and vertical ⁇ 1 opening angle (critical angle).
  • the horizontal opening angle ⁇ 1 is at least 16 °
  • the vertical opening angle ⁇ 1 is at least 5 °.
  • the horizontal opening angle ⁇ 1 is approximately 20 °
  • the vertical opening angle ⁇ 1 is approximately 10 ° or, in the region of a 15 ° increase, one in Figure 2 illustrated light-dark limit HDG on a measuring screen 21 of the low beam distribution 5 15 °.
  • a relatively large partial area of the vehicle apron can advantageously be illuminated.
  • the horizontal opening angle is understood to mean the angular range in the horizontal direction under which the corresponding light beam is emitted.
  • the vertical opening angle is understood to mean the angle at which the corresponding light beam is emitted in a vertical plane.
  • the second light module 7 has LED light sources 3 which, in cooperation with the second optical unit 8, emit a further light bundle at a solid angle which has a relatively narrow horizontal opening angle ⁇ 2 , ⁇ 3 and / or vertical opening angle ⁇ 2 , ⁇ 3 .
  • Relatively light-intensive additional light functions that can be superimposed on the low-beam light distribution 5 can advantageously be generated in this way.
  • the LED light sources 3 of the first LED field 9 interact with the second optical unit 8 in such a way that a second light beam 17 for generating the motorway light function 10 is emitted at a solid angle which has a horizontal opening angle ⁇ 2 of at most 10 ° and has a vertical opening angle ⁇ 2 of at most 0.5 °, preferably 0.25 °.
  • the LED light sources 3 of the second LED field 11 interact with the second optical unit 8 in such a way that a third light beam 18 is emitted at a solid angle which has a horizontal opening angle ⁇ 3 of at most 5 ° and a vertical opening angle ⁇ 3 of at most 0 , 5 °, preferably 0.25 °, for generating the cornering light function 12.
  • the motorway light distribution 10 partially covers the low-beam light distribution 6 in an upper edge region 20, while the cornering light distribution 12 completely covers the low-beam light distribution 5.
  • the first LED field 9 and the second LED field 11 preferably each have a plurality of LED light sources 3 arranged in a matrix, so that by driving a row of LED light sources 3 on the measuring screen 21, a row-like (row-like) sequence of each the LED light sources 3 imaging light spots can be displayed.
  • the LED light sources 3 of the second light module 7 are preferably designed as LED chips, which are preferably arranged on a common substrate 19. Thus, advantageously only a single LED field is provided, the predetermined at least one additional light function being able to be generated by driving the corresponding LED light sources 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Claims (9)

  1. Phare pour véhicules présentant un premier module lumineux (2) contenant au moins une source lumineuse LED (3) et une première unité optique (4) et présentant un second module lumineux (7) contenant au moins une source lumineuse LED (3) et une seconde unité optique (8), sachant que le premier module lumineux (2) est conçu de façon à ce qu'une diffusion lumineuse de type feux de croisement puisse être générée en tant que diffusion lumineuse de base (5), et que le second module lumineux (7) est conçu de façon à ce qu'une diffusion lumineuse supplémentaire (10, 12) couvrant au moins en partie la diffusion lumineuse de type feux de croisement (5) puisse être générée, caractérisé en ce que, un panneau de LED (9) dans le second module lumineux (7) est conçu et/ou interagit avec la seconde unité optique (8) de façon à ce qu'un deuxième faisceau lumineux (17) puisse être généré avec un angle d'ouverture horizontal (α2) de maximum 10° et un angle d'ouverture vertical (β2) de maximum 0,5° pour former une diffusion lumineuse de type feux de route.
  2. Phare selon la revendication 1, caractérisé en ce que, la première unité optique (4) est orientée de manière à émettre un premier faisceau lumineux (16) avec un angle d'ouverture horizontal (α1) relativement large et/ou un angle d'ouverture vertical (β1) relativement large.
  3. Phare selon la revendication 1 ou 2, caractérisé en ce que, la première unité optique (4) est orientée de manière à émettre un premier faisceau lumineux (16) avec un angle d'ouverture horizontal (α1) de minimum 16° et un angle d'ouverture vertical (β1) de minimum 5° pour former une diffusion lumineuse de type feux de croisement.
  4. Phare selon l'une des revendications 1 à 3, caractérisé en ce que, la seconde unité optique (7) est orientée de manière à émettre le deuxième faisceau lumineux (17, 18) avec un angle d'ouverture horizontal (α2, α3) relativement étroit et/ou un angle d'ouverture vertical (β2, β3) relativement étroit.
  5. Phare selon l'une des revendications 1 à 4, caractérisé en ce que, le second module lumineux (7) présente un premier panneau de LED (9) avec plusieurs sources lumineuses LED (3) pour former une première diffusion lumineuse supplémentaire (10), ainsi qu'un second panneau de LED (11) avec plusieurs sources lumineuses LED (3) pour former une seconde diffusion lumineuse supplémentaire (12), sachant que le premier panneau de LED (9) et le second panneau de LED (11) sont tous les deux affectés à la seconde unité optique (8).
  6. Phare selon la revendication 5, caractérisé en ce que, le second panneau de LED (11) du second module lumineux (7) est conçu et/ou interagit avec la seconde unité optique (8) de façon à ce qu'un troisième faisceau lumineux (18) soit généré avec un angle d'ouverture horizontal (α3) de maximum 5° et un angle d'ouverture vertical (β3) de maximum 0,5° pour former une fonction de feux de croisement (12).
  7. Phare selon l'une des revendications 1 à 6, caractérisé en ce que, les sources lumineuses LED (3) alignées les unes avec les autres dans le premier champ LED (9) et/ou le second champ LED (11) peuvent être commandées par rangée et interagissent avec la seconde unité optique (8) de façon à ce que le deuxième faisceau lumineux (17) et/ou le troisième faisceau lumineux (18) projette sur un écran de mesure (21) une ligne de points lumineux formés par les sources lumineuses LED (3).
  8. Phare selon l'une des revendications 1 à 7, caractérisé en ce que, un capteur (14) pour la détection d'objets se trouvant devant le véhicule et un dispositif de commande (13) pour le contrôle du premier module lumineux (2) et du second module lumineux (7) sont prévus, sachant que les sources lumineuses LED (3) du second module lumineux (7) peuvent être commandées de façon à ce que le deuxième faisceau lumineux (17) et/ou le troisième faisceau lumineux (18) émis par le second module lumineux (7) puisse être déplacé à l'horizontale et/ou à la verticale, en fonction de la position actuelle de l'objet détecté par le capteur devant le véhicule.
  9. Phare selon l'une des revendications 1 à 8, caractérisé en ce que, les sources lumineuses LED (3) du second module lumineux (7) sont conçues sous forme de puces LED disposées sur un support (19) commun.
EP08846610.7A 2007-11-06 2008-11-05 Projecteur pour véhicules Active EP2223010B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007052744A DE102007052744A1 (de) 2007-11-06 2007-11-06 Scheinwerfer für Fahrzeuge
PCT/EP2008/064983 WO2009059992A1 (fr) 2007-11-06 2008-11-05 Projecteur pour véhicules

Publications (2)

Publication Number Publication Date
EP2223010A1 EP2223010A1 (fr) 2010-09-01
EP2223010B1 true EP2223010B1 (fr) 2020-04-29

Family

ID=40293887

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08846610.7A Active EP2223010B1 (fr) 2007-11-06 2008-11-05 Projecteur pour véhicules

Country Status (3)

Country Link
EP (1) EP2223010B1 (fr)
DE (1) DE102007052744A1 (fr)
WO (1) WO2009059992A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012108309A1 (de) * 2012-09-07 2014-03-13 Hella Kgaa Hueck & Co. Scheinwerfer für Fahrzeuge
JP7393877B2 (ja) * 2019-05-24 2023-12-07 スタンレー電気株式会社 車両用灯具

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19813032A1 (de) * 1998-03-25 1999-09-30 Bosch Gmbh Robert Scheinwerferanlage für Fahrzeuge zur Aussendung veränderlicher Lichtbündel
DE10153031C2 (de) * 2001-10-26 2003-10-23 Audi Ag Fahrzeugscheinwerfer mit individuell und/oder gruppenweise ansteuerbaren elektrooptischen Elementen
JP2004311101A (ja) * 2003-04-03 2004-11-04 Koito Mfg Co Ltd 車両用前照灯及び半導体発光素子
US20040263346A1 (en) * 2003-06-27 2004-12-30 Guide Corporation, A Delaware Corporation Solid state adaptive forward lighting system
JP4061251B2 (ja) * 2003-08-05 2008-03-12 株式会社小糸製作所 車両用灯具
JP4392786B2 (ja) * 2003-11-04 2010-01-06 株式会社小糸製作所 車両用前照灯
DE102004042092B4 (de) 2004-08-30 2020-01-02 HELLA GmbH & Co. KGaA Verfahren zur Ansteuerung einer Lichterzeugungseinrichtung für Kraftfahrzeuge sowie Vorrichtung
DE102005014754A1 (de) * 2005-03-31 2006-10-05 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH KFZ-Scheinwerfer
DE102005030932B4 (de) * 2005-06-30 2022-01-13 HELLA GmbH & Co. KGaA Scheinwerfer für Fahrzeuge
JP4535965B2 (ja) * 2005-08-16 2010-09-01 株式会社小糸製作所 車両用灯具
DE102005041234A1 (de) 2005-08-31 2007-03-01 Hella Kgaa Hueck & Co. Scheinwerfer für Fahrzeuge
DE102005049685A1 (de) * 2005-10-14 2007-04-19 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Multifunktions-Kfz-Scheinwerfermodul insbesondere für den Frontbereich eines Fahrzeugs

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
WO2009059992A1 (fr) 2009-05-14
DE102007052744A1 (de) 2009-05-07
EP2223010A1 (fr) 2010-09-01

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