EP1197387B1 - Kraftfahrzeugscheinwerfer mit verstellbarer Blende - Google Patents

Kraftfahrzeugscheinwerfer mit verstellbarer Blende Download PDF

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Publication number
EP1197387B1
EP1197387B1 EP01402571A EP01402571A EP1197387B1 EP 1197387 B1 EP1197387 B1 EP 1197387B1 EP 01402571 A EP01402571 A EP 01402571A EP 01402571 A EP01402571 A EP 01402571A EP 1197387 B1 EP1197387 B1 EP 1197387B1
Authority
EP
European Patent Office
Prior art keywords
axis
screen
screens
headlight according
headlight
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 - Lifetime
Application number
EP01402571A
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English (en)
French (fr)
Other versions
EP1197387A1 (de
Inventor
Joel c/o Valeo Vision Leleve
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.)
Valeo Vision SAS
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Valeo Vision SAS
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 Valeo Vision SAS filed Critical Valeo Vision SAS
Publication of EP1197387A1 publication Critical patent/EP1197387A1/de
Application granted granted Critical
Publication of EP1197387B1 publication Critical patent/EP1197387B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F21S41/68—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
    • F21S41/683—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens
    • F21S41/695—Screens rotating around a vertical axis

Definitions

  • the invention relates to projectors for vehicles, in particular those equipped with an elliptical-type reflector.
  • a projector of this type conventionally comprises a light source, a reflector of the elliptical kind, a first focus of which is situated in the vicinity of the source, a convergent lens whose focal plane passes in the vicinity of a second focus of the reflector and a projector closing window.
  • the lens may consist of the ice itself.
  • Such a headlamp When such a headlamp must generate a regulatory cut beam such as a passing beam or a fog beam, it comprises a cover or screen interposed between the light source and the lens, which obscures the part of the radiation, which would otherwise spread above this cut.
  • a regulatory cut beam such as a passing beam or a fog beam
  • a difficulty of this type of projector resides in the modification of the profile of the cut. Such a modification should be considered especially when a projector, designed for example for a right-hand traffic direction, must form a light beam, cut, adapted to a traffic on the left. It may also be desirable to provide a universal projector capable of selectively generating a dipped beam, a fog or an unbroken beam.
  • the document EP 0794382 for example, has a projector with a movable vertical sliding screen to form on command a cut-off beam and operated for this purpose by an actuator.
  • An object of the invention is to provide a projector for generating one or more cut-off beams by means of a transition that is not dangerous and visually comfortable.
  • a vehicle headlamp according to claim 1 comprising a frame and at least one occultation screen mounted to rotate about an axis of rotation relative to the frame. in which the axis is inclined with respect to a main axis of illumination of the projector.
  • the inclination of the axis causes a relatively smooth visual transition during a beam change.
  • This movement of the screen does not generate aberration. This transition is not dangerous.
  • the screen or screens can be given relatively large dimensions without encountering space problems in the projector.
  • the projector 2 comprises a reflector 4 in the shape of an ellipsoid of revolution about a horizontal longitudinal axis 6 forming a main direction of illumination of the projector.
  • the projector comprises a lamp holder 8 fixed to the reflector at the rear of the latter.
  • the projector also comprises a lens holder 10 fixed at the front of the reflector 4 and a lens 12 fixed at the front of the lens holder, a local plane of the lens passing in the vicinity of a second focus of the reflector.
  • the lamp holder, the reflector, the lens holder and the lens follow one another along the axis 6.
  • the reflector 4 and the lens holder 10 here constitute a projector frame.
  • the projector may further include a housing enclosing these elements.
  • the projector comprises a screen 14 rigidly fixed to the frame.
  • the screen 14 has a curved shape, substantially cylindrical vertical generatrix and center of curvature located towards the front of the projector.
  • the screen 14 extends vertically on a low height and horizontally over approximately the entire width of the lamp holder. It has a horizontal upper edge extending 0.5% below the axis 6 with reference to the focus of the lens 12. This fixed screen avoids any risk of glare during the movement of the screen support piece as we will see it below.
  • This screen is fixed by two side tabs 15 pinched and sandwiched between the edges of the reflector and the lamp holder.
  • the projector comprises a support part 16 of generally conical shape although its shape is not strictly that of a cone.
  • the piece 16 is rotatably mounted about an axis 18, the axis of the "quasi cone". This axis extends in a vertical plane and is intersecting with the main axis 6. It intersects this axis in front of the fixed screen 14, approximately at the level of the lens 12.
  • the support piece 16 is rigidly fixed to a shaft 20 extending along the axis 18.
  • the support piece 16 forms four movable screens 22, 24, 26, 28 each able to intercept a portion of the beam reflected by the reflector 4 when the screen extends in the vicinity of the main axis 6.
  • the support member 16 is rotatably mounted about its axis 18 so that it can occupy four positions relative to the frame, separated from each other by a quarter turn and corresponding to the respective screen cooperations with the beam.
  • the support part 16 when the screen 22 cooperates with the beam, as in the figures. This cooperation makes it possible to define the entire upper quarter of the support part.
  • the support piece has a front face 30 centered on the axis 18 and inclined upwards and forwards. It also has a "quasi-conical" face 32, a portion 32a associated with the screen 22 extending generally rearward on the Figures 1 to 3 . The generator of the portion 32a of this face 32 intercepting the vertical sectional plane on the figure 1 is vertical.
  • the screen 22 is formed at the junction between the face 32a and the face 30.
  • This junction extends from one to the other of its ends in a horizontal general plane passing in the vicinity of the axis 6, as the show it figure 1 .
  • this junction has a top view in a generally curved shape similar to that of the fixed screen 14.
  • the mobile screen 22 extends over the entire width at a distance from the fixed screen 14 which is low and essentially constant along the fixed screen.
  • the ends of the fixed screen extend laterally beyond those of the movable screen 22 which is shorter.
  • the junction between the faces 32a and 30 is truncated by a song of a certain thickness constituting the screen 22. This song has generatrices intersecting at the focus of the lens 6.
  • the generator at the axis 6 is confused with this axis.
  • the cutoff profile is that referenced TD on the figure 4 and is capable of generating conventionally a passing beam for driving on the right.
  • the rear portion 32a is shaped to connect the edge 22 to the shaft 20 of the the least bulky way possible. It has a shape approaching that of a portion of cone.
  • the other three parts of the support part 16 are similarly defined in association with the other three screens 24, 26 and 28.
  • the front face 30 thus has a generally square shape with curved edges with a center of curvature directed forward.
  • the mobile screens 24, 26 and 28 are here formed to define beams known per se and respectively illustrated in FIG. figure 4 . They are respectively a left-hand passing beam (TG), a driving beam and a passing beam for wet driving (AW).
  • TG left-hand passing beam
  • AW passing beam for wet driving
  • the latter in addition to the cut-off of the passing beam avoids the lighting of the area of the road situated in front of the oncoming vehicles. Also, drivers are not dazzled by the beam that would otherwise reflect in their direction.
  • the projector comprises an actuator 34 in the form of a stepper motor shaft 20, controllable by the driver from the dashboard of the vehicle.
  • This actuator is associated with a stabilizing device 36 comprising a duct 37 radial to the shaft 20 and opening thereon, wherein is movable a ball 39 biased towards the shaft by means of a spring.
  • the shaft has four ball housings corresponding to the four positions of the support piece. This device reduces the risk of inadvertent rotation of the movable screen support part 16 without the motor being actuated.
  • the motor 34 rotates the four screens 22, 24, 26 and 28 about the axis 18 about rotation and positions the support piece so as to define the cut with the mobile screen selected by the driver according to the circumstances. .
  • the support piece 16 may be made so that its largest dimension, for example between the extreme edges of two opposing screens, is less than about five centimeters. It can be more made of a thin metal material, for example a few tenths of a millimeter. As a result, the mobile part, which supports the different types of screens, has only a very low inertia.
  • the motor 24 may have a low power, of the order of 1 to 2 Watts. Such a motor will then be inexpensive, and consume little electric power. One can even use a friction actuator system driven by a deformable piezoelectric element.
  • the response time of this structure can be very low: it is possible to switch from one position to another by a high speed rotation, the transition time between two positions being of the order of 100 milliseconds . With switching times of this order of magnitude, the driver of the vehicle feels no discomfort that could be caused by the shape of the break in the transition phase. Similarly, drivers of oncoming vehicles are not likely to be dazzled during a change of cut.
  • the lamp 9 may be a halogen lamp or a discharge lamp.
  • the actuator 34, the ball device 36 and the movable screen support 16 may extend in whole or in part through lower openings of the reflector 4 and / or the lens holder 10. These openings are not very visible since the outside the projector. In addition, they do not substantially alter the operation of the projector.
  • the lower openings of the reflector 4 do not substantially alter the beam formed by the reflector.
  • the motor, the stabilization device and the screen support extend opposite a zone of the reflector which is of little use for the definition of the beam and therefore not detrimental to its formation. .
  • a moving screen when a moving screen extends in the vicinity of the axis 6 in position to form a cut, its distance to the fixed screen will be 0.1 to 0.2 mm.
  • the inclination of the axis 18 combined with the conicity has the advantage that the edge of the screens matches the field curve of the lens 12, which is in the first order comparable to a circle. This arrangement is particularly favorable for obtaining optimum optical quality for the beam.
  • the projector according to the invention also has the advantage that the mechanical device is particularly simple even when it is associated with a large number of mobile screens.
  • the reduced size of the motor 34 associated with the inclination of the axis 18 makes it possible to house the motor 34 practically within the volume delimited by the reflector 4 and the lens holder 10, the projector thus equipped having the same overall dimensions, and the same aspect, that a projector having only one fixed screen providing a single break.
  • the support piece 16 may be associated with a number of screens different from 4 for example, 2, 3, 5, or more. It can even be associated with a single screen.
  • the axis of rotation 18 of the mobile screen support part is slightly inclined relative to the median vertical axis of the projector if this is advantageous in terms of size or optical performance. Preferably, this inclination will not exceed a few degrees.
  • other types of cut-off beams than those previously described are possible in combination with the present invention.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Claims (15)

  1. Fahrzeugscheinwerfer mit einem Gehäuse (4, 10) und wenigstens einer Abschatterblende (22, 24, 26, 28), die bezüglich des Gehäuses um eine Drehachse (18) herum drehbeweglich angebracht ist, wobei die Achse (18) zu einer Hauptbeleuchtungsachse (6) des Scheinwerfers geneigt ist und die Drehachse (18) die Hauptachse (6) schneidet,
    dadurch gekennzeichnet, dass er mehrere Abschatterblenden (22, 24, 26, 28) umfasst, und dass die beweglichen Abschatterblenden (22, 24, 26, 28) durch verschiedene Teile ein und derselben Halterung (16) gebildet sind.
  2. Scheinwerfer nach Anspruch 1,
    dadurch gekennzeichnet, dass er wenigstens zwei Blenden (22, 24, 26, 28) umfasst.
  3. Scheinwerfer nach Anspruch 1 oder 2,
    dadurch gekennzeichnet, dass er vier Blenden (22, 24, 26, 28) umfasst.
  4. Scheinwerfer nach einem der Ansprüche 2 bis 3,
    dadurch gekennzeichnet, dass die Blenden (22, 24, 26, 28) gegenseitig starr befestigt sind.
  5. Scheinwerfer nach einem der Ansprüche 1 bis 4,
    dadurch gekennzeichnet, dass die oder jede Blende (22, 24, 26, 28) ein gekrümmtes Profil hat.
  6. Scheinwerfer nach einem der Ansprüche 1 bis 5,
    dadurch gekennzeichnet, dass die Drehachse (18) die Hauptachse in einem Punkt schneidet, der bezüglich der Blende bzw. den Blenden vorne im Scheinwerfer liegt.
  7. Scheinwerfer nach einem der Ansprüche 1 bis 6,
    dadurch gekennzeichnet, dass die Drehachse (18) im Wesentlichen in einer vertikalen Ebene verläuft.
  8. Scheinwerfer nach einem der Ansprüche 1 bis 7,
    dadurch gekennzeichnet, dass die Drehachse (18) in Richtung der Vorderseite des Scheinwerfers schräg nach oben verläuft.
  9. Scheinwerfer nach einem der Ansprüche 1 bis 8,
    dadurch gekennzeichnet, dass die Drehachse (18) zur horizontalen Ebene geneigt ist.
  10. Scheinwerfer nach einem der Ansprüche 1 bis 9,
    dadurch gekennzeichnet, dass die Blenden (22, 24, 26, 28) durch verschiedene freie Außenränder der Halterung (16) gebildet sind.
  11. Scheinwerfer nach einem der Ansprüche 1 bis 10,
    dadurch gekennzeichnet, dass die Halterung (16) eine allgemein konische Form hat.
  12. Scheinwerfer nach einem der Ansprüche 1 bis 11,
    dadurch gekennzeichnet, dass die Blende oder wenigstens eine der Blenden (22, 24, 26, 28) ein Lichtbündel aus folgender Gruppe zu bilden vermag:
    - Abblendlicht für Linksverkehr (TG);
    - Abblendlicht für Rechtsverkehr (TD);
    - Abblendlicht für Fahrten bei Schlechtwetter (AW);
    - Abblendlicht für Autobahnfahrten (ML); und
    - Fernlicht.
  13. Scheinwerfer nach einem der Ansprüche 1 bis 12,
    dadurch gekennzeichnet, dass er ferner eine feststehende Blende (14) umfasst, die starr am Gehäuse (4, 10) befestigt ist.
  14. Scheinwerfer nach Anspruch 13,
    dadurch gekennzeichnet, dass die feststehende Blende (14) mit der beweglichen Blende oder wenigstens einer der beweglichen Blenden (22, 24, 26, 28) zum Bilden eines Scheinwerferlichtbündels zusammenzuwirken vermag.
  15. Scheinwerfer nach einem der Ansprüche 1 bis 14,
    dadurch gekennzeichnet, dass er einen Reflektor (4) in Form eines Rotationsellipsoiden umfasst.
EP01402571A 2000-10-12 2001-10-04 Kraftfahrzeugscheinwerfer mit verstellbarer Blende Expired - Lifetime EP1197387B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0013055 2000-10-12
FR0013055A FR2815310B1 (fr) 2000-10-12 2000-10-12 Projecteur pour vehicule automobile a ecran d'occultation mobile

Publications (2)

Publication Number Publication Date
EP1197387A1 EP1197387A1 (de) 2002-04-17
EP1197387B1 true EP1197387B1 (de) 2009-01-14

Family

ID=8855263

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Application Number Title Priority Date Filing Date
EP01402571A Expired - Lifetime EP1197387B1 (de) 2000-10-12 2001-10-04 Kraftfahrzeugscheinwerfer mit verstellbarer Blende

Country Status (6)

Country Link
US (1) US6623149B2 (de)
EP (1) EP1197387B1 (de)
JP (1) JP2002140909A (de)
DE (1) DE60137390D1 (de)
ES (1) ES2317883T3 (de)
FR (1) FR2815310B1 (de)

Families Citing this family (31)

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Publication number Priority date Publication date Assignee Title
FR2840389B1 (fr) 2002-06-04 2004-12-03 Valeo Vision Projecteur d'eclairage elliptique comportant une source lumineuse secondaire
AT502738B1 (de) * 2002-07-01 2007-10-15 Fair S R L Kindersitzbefestigung und kinderrückhaltevorrichtung für kraftfahrzeuge
FR2845330B1 (fr) 2002-10-04 2005-07-08 Valeo Vision Dispositif d'eclairage et/ou de signalisation du type projecteur pour vehicule automobile
JP4144381B2 (ja) * 2003-03-07 2008-09-03 市光工業株式会社 ヘッドランプ
US7145977B2 (en) * 2003-07-30 2006-12-05 International Business Machines Corporation Diagnostic method and apparatus for non-destructively observing latch data
US7021804B2 (en) * 2003-08-13 2006-04-04 Guide Corporation Lamp assembly with multi-stage reflector
US7033054B2 (en) 2003-08-13 2006-04-25 Guide Corporation Lamp assembly with peripheral auxiliary function
FR2866413B1 (fr) 2004-02-13 2006-06-30 Valeo Vision Projecteur elliptique equipe d'un ecran d'occultation en matiere transparente.
FR2869388B1 (fr) 2004-04-27 2006-09-01 Valeo Vision Sa Dispositif projecteur avec bloc actionneur multifonctions pour vehicule automobile
FR2871552B1 (fr) * 2004-06-09 2012-10-19 Valeo Vision Dispositif projecteur multifonctions de type elliptique
EP1605202B1 (de) * 2004-06-09 2016-10-05 Valeo Vision Multifunktionales Scheinwerfergerät
FR2875581B1 (fr) * 2004-09-21 2006-11-24 Valeo Vision Sa Dispositif d'eclairage et/ou de signalisation du type projecteur pour vehicule automobile
FR2881207B1 (fr) 2005-01-21 2007-08-17 Valeo Vision Sa Module optique pour dispositif d'eclairage pour vehicule automobile, prevu pour donner au moins un faisceau principal a coupure
DE102005012303B4 (de) * 2005-03-17 2015-11-26 Automotive Lighting Reutlingen Gmbh Scheinwerfer
FR2883629B1 (fr) 2005-03-22 2007-07-20 Valeo Vision Sa Lentille pour module optique de dispositif d'eclairage pour vehicule automobile
FR2886376B1 (fr) 2005-05-27 2007-08-17 Valeo Vision Sa Module optique pour dispositif d'eclairage automobile
FR2888916B1 (fr) 2005-07-21 2007-09-28 Valeo Vision Sa Module optique pour dispositif d'eclairage automobile
FR2897415B1 (fr) * 2006-02-14 2008-04-11 Valeo Vision Sa Projecteur d'eclairage pour vehicules automobiles.
FR2898403B1 (fr) 2006-03-07 2012-12-14 Valeo Vision Lentille pour module optique de dispositif d'eclairage pour vehicule automobile
JP4586777B2 (ja) * 2006-08-10 2010-11-24 市光工業株式会社 車両用前照灯
JP2008135302A (ja) * 2006-11-29 2008-06-12 Stanley Electric Co Ltd プロジェクタ型車両用灯具
FR2917485B1 (fr) 2007-06-18 2009-10-09 Valeo Vision Sa Module optique pour dispositif d'eclairage automobile
FR2917484B1 (fr) 2007-06-18 2009-10-02 Valeo Vision Sa Module optique pour dispositif d'eclairage automobile
JP5074888B2 (ja) * 2007-11-02 2012-11-14 株式会社小糸製作所 車両用ランプシステム
EP3296155A1 (de) 2008-05-08 2018-03-21 Koito Manufacturing Co., Ltd. Automobilscheinwerfervorrichtung
CZ301827B6 (cs) 2008-07-21 2010-07-07 Visteon Global Technologies, Inc. Adaptivní projektorový systém pro svetlomety motorových vozidel
FR2944857B1 (fr) 2009-04-24 2017-02-03 Valeo Vision Dispositif optique pour vehicule automobile.
CZ307225B6 (cs) * 2009-07-28 2018-04-11 Varroc Lighting Systems, s.r.o. Projektor světlometu motorového vozidla
FR2955916B1 (fr) 2010-02-02 2012-05-25 Valeo Vision Dispositif de deplacement d'un element d'un dispositif d'eclairage et / ou de signalisation d'un vehicule automobile et procede de fonctionnement d'un tel dispositif
FR2957032B1 (fr) 2010-03-05 2016-05-27 Valeo Vision Systeme optique pour vehicule automobile
FR2958716B1 (fr) 2010-04-12 2015-08-21 Valeo Vision Ensemble pour un dispositif d'eclairage et/ou de signalisation d'un vehicule automobile

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Also Published As

Publication number Publication date
FR2815310B1 (fr) 2003-02-21
US6623149B2 (en) 2003-09-23
DE60137390D1 (de) 2009-03-05
JP2002140909A (ja) 2002-05-17
FR2815310A1 (fr) 2002-04-19
US20020044451A1 (en) 2002-04-18
ES2317883T3 (es) 2009-05-01
EP1197387A1 (de) 2002-04-17

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