EP0791780A1 - Fahrzeugscheinwerfer mit einziger Lichtquelle für Ablendlicht und Fernlicht - Google Patents

Fahrzeugscheinwerfer mit einziger Lichtquelle für Ablendlicht und Fernlicht Download PDF

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Publication number
EP0791780A1
EP0791780A1 EP97400367A EP97400367A EP0791780A1 EP 0791780 A1 EP0791780 A1 EP 0791780A1 EP 97400367 A EP97400367 A EP 97400367A EP 97400367 A EP97400367 A EP 97400367A EP 0791780 A1 EP0791780 A1 EP 0791780A1
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EP
European Patent Office
Prior art keywords
point
projector
projector according
headlamp
support
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
EP97400367A
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English (en)
French (fr)
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EP0791780B1 (de
Inventor
Hector Fratty
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Valeo Vision SAS
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Valeo Vision SAS
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Application filed by Valeo Vision SAS filed Critical Valeo Vision SAS
Publication of EP0791780A1 publication Critical patent/EP0791780A1/de
Application granted granted Critical
Publication of EP0791780B1 publication Critical patent/EP0791780B1/de
Anticipated expiration legal-status Critical
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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
    • F21S41/67—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors
    • F21S41/675—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors by moving reflectors

Definitions

  • the present invention relates generally to motor vehicle headlamps.
  • It relates more particularly to a headlamp capable of emitting a passing beam and a driving beam.
  • Document FR-A-1 461 607 already discloses in particular a headlamp comprising a single source, in this case a monofilament lamp, which cooperates with a reflector capable of tilting around a horizontal axis perpendicular to its optical axis.
  • This known headlamp however has an implementation which is totally unsuitable for modern headlamps, and in particular those provided in addition with manual or automatic means for correcting beam orientation in elevation or in azimuth.
  • a projector capable of emitting with a single light source (such as a filament or an arc) and a single mirror these two types of beams.
  • the mirror comprises a fixed part and one or more mobile parts, the movement of the mobile parts using appropriate actuators making it possible to switch from one type of beam to another.
  • document DE-A-37 22 581 which teaches a headlamp in accordance with the preamble of claim 1, provides for the use of a one-piece mirror cooperating with a single source, and two or more displacement members for passing from a passing beam to a driving beam and vice versa.
  • the present invention proposes to achieve the same objective with simpler and less expensive means.
  • Another object of the present invention is to efficiently ensure the combination of a mirror tilting road crossing switching device and other beam correction devices in one and the same projector.
  • the present invention firstly provides a motor vehicle headlamp as defined in claim 1.
  • the invention proposes a set of two left or right projectors as defined in claim 16.
  • the invention proposes a set of two left and right projectors as defined in claim 17.
  • FIGS. 1 to 3 there is shown a headlamp which comprises, in a housing 30 closed by a crystal (not shown), a mirror 20 in which a lamp 10 is mounted.
  • the filament or arc lamp defines a single light source.
  • the mirror is mounted, conventionally per se, on three support points arranged at the three vertices of a right triangle, so as to allow the modification of the orientation of the beam in elevation (vertically) and in azimuth (horizontally) .
  • a "point" of support for example a localized mounting of a rear part of the mirror, on a head forming a ball joint connected to the housing of the projector.
  • a fixed support point denoted PF
  • a mobile support point H situated at the same height as the fixed support point PF and which, when it is translated in a direction essentially parallel to the optical axis xx of the mirror, ensures the azimuth adjustment of the beam
  • a mobile support point V situated directly above the fixed point PF and which, when it is translated in a direction essentially parallel to said optical axis xx, provides beam elevation adjustment.
  • the devices CD and CR both operate at point V, and there are two manual correction devices CM operating at point H and at point V, respectively.
  • the CD device conventionally allows dynamic adjustment in elevation, while the CR device, by acting on the fulcrum V, makes it possible to selectively generate the beam F1 or the beam F2 illustrated in FIG. 4.
  • the beam F1 is a conventional beam with a so-called "V" cut, in accordance with European regulations on the subject.
  • the mirror 20 is designed to be able to generate this type of cut beam without having to use a concealment cup, and those skilled in the art will refer to earlier patents in the name of the applicant on this subject.
  • the mirror 20 is designed, as also described in the aforementioned patents, to generate a beam having the required width without the use of prisms or spreading streaks on the closing glass. This ice can therefore be smooth or very slightly deviating.
  • the beam F2 is simply raised vertically with respect to the beam F1, thereby lighting the road at a greater distance in front of the vehicle.
  • the F2 beam can be supplemented by a narrower F3 beam concentrated on the axis of the road.
  • This additional beam can be produced with a second projector. But given the fact that the amount of light it has to provide is very significantly reduced compared to a conventional road projector, it can be of both horizontal and vertical dimensions extremely small, and not clutter the front of the vehicle.
  • an additional projector having a height and a width of a few centimeters to ten centimeters.
  • Figure 3 schematically illustrates an example of realization of the combination of the CM, CD and CR devices at the support point V. It includes a single linear actuator 55 with multiple positions for the functions of the CD and CR devices, which controls the translation of a rod 51 whose front end is threaded in 51a. By appropriate electronic control of the linear actuator 55, the passage from passing beam to driving beam and vice versa is simultaneously ensured and, in the crossing mode, the dynamic correction function as a function of variations in attitude.
  • the manual corrector CM located at point V comprises a control button 54 driving a set of pinions 53 which rotates the rod 51, the latter having at this level a section, for example square, and being able to slide axially with respect to the pinion with which it is in engagement.
  • the threaded part 51a is engaged with a part 52 trapped in a cage 21 formed at the rear of the mirror 20 and simultaneously forming a ball and nut for said threaded part. In this way, it is possible to give the threaded rod 51 and the mirror a mutual reference position, the dynamic correction and the crossing-road switching being effected from this reference.
  • manual correction therefore only concerns the reference setting of the beam in azimuth.
  • the crossing-road switching takes place at two points, PF and V, so as to obtain, in order to pass from the crossing beam F1 to the driving beam F2, the combination of an upward displacement and a lateral displacement, as shown in figure 8.
  • the angle of raising of the beam is chosen so as to provide illumination of the road in the distance, with sufficient intensity (typically a bearing of 1.5%), while the angle of lateral offset is chosen so as to center the spot of concentration of the passing beam F1 in the axis of the road.
  • a conventional passing beam has a spot of concentration which is decentered towards the aisle of the road, so as to favor the illumination of this aisle, and the purpose of the offset is to bring back this spot of concentration in the axis.
  • the value of this angular displacement which therefore takes place to the left for a right-hand traffic direction, is for example 3%.
  • this is achieved by using the switching devices CR so that they cause two different translation values of the support points PF and V, with a greater value at point V.
  • the translation at point PF gives the lateral component of the displacement
  • the difference between the translations at points PF and V gives the vertical component of the displacement.
  • FIG. 9 there is shown a projector which differs from the preceding, first of all, by the fact that the right triangle of support points is reversed, the point V being here above the point PF, the points PF and H being swapped and the triangle being rectangle at the point PF.
  • the two manual correction devices allow beam reference adjustment both in elevation (action at point V) and in azimuth (action at point H).
  • the dynamic correction device acts, conventionally, at point V.
  • the crossing-road switching device is remarkable in this embodiment in that it acts at a single point, namely the fixed point PF, to rotate the mirror around an axis passing through the diagonal of the right triangle, which joins the moving points H and V.
  • the location of the three points PF, H and V at the rear of the mirror is chosen so as to obtain the desired displacement obliquity.
  • the crossing-road switching can be carried out with a single CR device.
  • FIG. 13 there is shown the arrangement of headlights / crossover switches on the left and right headlights of a vehicle.
  • the left projector has an optical axis x G x G and three support points PF G , H G and V G.
  • the right headlamp has an optical axis x D x D and three support points PF D , H D and V D.
  • the two right triangles whose respective support points define the vertices are symmetrical with respect to a median vertical plane of the vehicle.
  • FIG. 14 shows in the lower part three support points PF, H and V, with two elements of the crossing-road switching device CR provided respectively at points H and V.
  • the displacement stroke D of the switching element CR placed at the fulcrum H must be large, up to 20 mm in some cases. This implies a possibility of significant movement of the mirror 20 in the housing 30, and therefore an oversizing of the housing.
  • this variant provides for crossing-road switching by adding a third element CR 'to the support point PF, and by giving the switching movements at points PF and H opposite directions but of the same amplitude, at know an amplitude D / 2 equal to half that required at point H in the embodiment of FIG. 14.
  • the stroke of the dynamic corrector is 8 mm.
  • the travel of the CR1 switch will for example be 4 mm, while the travel of the CR2 switch will be 3 mm.
  • the crossing-road switching elements the function of which is that of linear actuators with two discrete positions, can be constituted by electromagnets with two positions, by torque-locked motors or by motors. step by step.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
EP97400367A 1996-02-20 1997-02-19 Fahrzeugscheinwerfer mit einziger Lichtquelle für Ablendlicht und Fernlicht Expired - Lifetime EP0791780B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9602061 1996-02-20
FR9602061A FR2745061B1 (fr) 1996-02-20 1996-02-20 Projecteur de vehicule automobile, comportant une source lumineuse unique et susceptible d'emettre un faisceau de croisement et un faisceau de route

Publications (2)

Publication Number Publication Date
EP0791780A1 true EP0791780A1 (de) 1997-08-27
EP0791780B1 EP0791780B1 (de) 2001-12-19

Family

ID=9489379

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97400367A Expired - Lifetime EP0791780B1 (de) 1996-02-20 1997-02-19 Fahrzeugscheinwerfer mit einziger Lichtquelle für Ablendlicht und Fernlicht

Country Status (6)

Country Link
US (1) US6238071B1 (de)
EP (1) EP0791780B1 (de)
JP (1) JPH09315211A (de)
DE (1) DE69709200T2 (de)
ES (1) ES2170343T3 (de)
FR (1) FR2745061B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2790062A1 (fr) * 1999-02-22 2000-08-25 Valeo Vision Projecteur de vehicule capable d'emettre deux faisceaux lumineux differents avec une source unique
EP2327584A1 (de) * 2009-11-25 2011-06-01 Hella KGaA Hueck & Co. Einstellsystem für zumindest ein Lichtmodul einer Beleuchtungseinrichtung eines Fahrzeugs sowie Beleuchtungseinrichtung für ein Fahrzeug
EP2444723A1 (de) 2010-10-21 2012-04-25 Valeo Vision Beleuchtungsvorrichtung für Fahrzeug mit Antivibrationssystem
EP0923695B2 (de) † 1997-07-11 2013-07-17 Automotive Lighting Reutlingen GmbH Scheinwerferanlage für fahrzeuge für abblendlicht und fernlicht

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4015040B2 (ja) * 2003-02-26 2007-11-28 ミネベア株式会社 ヘッドライト偏向機構
US7004607B2 (en) * 2003-10-23 2006-02-28 Asyst Technologies, Llc Motorized lamp adjuster
US20060118167A1 (en) 2004-12-03 2006-06-08 Xy, Inc. Pressure regulated continuously variable volume container for fluid delivery
US20060171153A1 (en) * 2005-02-03 2006-08-03 Hella Kgaa Hueck & Co. Light distribution for headlights of vehicles
US20060201088A1 (en) * 2005-03-10 2006-09-14 Studor S.A. Sealed off building drainage and vent system
DE102005038805B4 (de) * 2005-08-17 2012-11-29 Daimler Ag Verfahren und Vorrichtung zum automatischen Schalten von Fernlicht
DE102006022022A1 (de) * 2006-03-03 2007-09-06 Daimlerchrysler Ag Verfahren und Vorrichtung zur Steuerung der Lichtfunktionen bei Frontscheinwerfern für Straßenfahrzeuge
DE102009022843A1 (de) * 2009-05-27 2010-12-02 Minebea Co., Ltd. Vorrichtung zur Einstellung eines Fahrzeugscheinwerfers
DE102013108329A1 (de) * 2013-08-02 2015-02-05 Hella Kgaa Hueck & Co. Schweinwerfer für Fahrzeuge
DE102018100848A1 (de) * 2018-01-16 2019-07-18 Automotive Lighting Reutlingen Gmbh Kraftfahrzeugscheinwerfer und Einstellsystem für ein Leuchtenbauteil des Kraftfahrzeugscheinwerfers
US11732859B2 (en) 2019-09-17 2023-08-22 Psa Automobiles Sa Vehicle headlamp
FR3100864B1 (fr) 2019-09-17 2021-12-10 Psa Automobiles Sa Projecteur de véhicule
FR3100867A1 (fr) 2019-09-17 2021-03-19 Psa Automobiles Sa Projecteur de véhicule
FR3100866A1 (fr) 2019-09-17 2021-03-19 Psa Automobiles Sa Projecteur de véhicule

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2009672A1 (de) * 1968-05-30 1970-02-06 Bosch
DE3722581A1 (de) * 1986-07-08 1988-01-21 Ichikoh Industries Ltd Scheinwerfer zur verwendung bei fahrzeugen
US5390088A (en) * 1992-12-16 1995-02-14 Ichikoh Industries, Ltd. Vehicle lamp device

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1461607A (fr) 1965-10-18 1966-02-25 Phare de véhicule automobile
EP0120442B1 (de) * 1983-03-22 1987-12-09 Ichikoh Industries Limited Vorrichtung zur Regelung der Leuchtweite eines Kraftfahrzeugscheinwerfers
JPS6293802A (ja) * 1985-10-18 1987-04-30 東芝ライテック株式会社 車両用前照灯
JPH0788151B2 (ja) * 1988-05-06 1995-09-27 株式会社小糸製作所 車輌用前照灯の傾動装置
FR2636578B1 (fr) * 1988-09-22 1993-06-18 Valeo Vision Dispositif de reglage d'orientation pour projecteur de vehicule automobile
JPH0787041B2 (ja) * 1988-11-24 1995-09-20 株式会社小糸製作所 前照灯の組立方法
JPH069001U (ja) * 1992-07-07 1994-02-04 株式会社小糸製作所 傾斜検出器付自動車用ヘッドランプ
JP3493611B2 (ja) * 1993-12-29 2004-02-03 本田技研工業株式会社 自動二輪車用の前照灯
DE4418733A1 (de) 1994-05-28 1995-11-30 Bosch Gmbh Robert Scheinwerfer für Fahrzeuge für Fern- und Abblendlicht
JPH097406A (ja) * 1995-06-19 1997-01-10 Ichikoh Ind Ltd 自動車用前照灯における光軸調整確認装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2009672A1 (de) * 1968-05-30 1970-02-06 Bosch
DE3722581A1 (de) * 1986-07-08 1988-01-21 Ichikoh Industries Ltd Scheinwerfer zur verwendung bei fahrzeugen
US5390088A (en) * 1992-12-16 1995-02-14 Ichikoh Industries, Ltd. Vehicle lamp device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0923695B2 (de) † 1997-07-11 2013-07-17 Automotive Lighting Reutlingen GmbH Scheinwerferanlage für fahrzeuge für abblendlicht und fernlicht
FR2790062A1 (fr) * 1999-02-22 2000-08-25 Valeo Vision Projecteur de vehicule capable d'emettre deux faisceaux lumineux differents avec une source unique
EP1031786A1 (de) * 1999-02-22 2000-08-30 Valeo Vision Kraftfahrzeug-Scheinwerfer zur Erzeugung von zwei verschiedenen Lichtstrahlen mit einer einzigen Lichtquelle
US6354722B1 (en) 1999-02-22 2002-03-12 Valeo Vision Vehicle lamp having a linearly movable reflector
EP2327584A1 (de) * 2009-11-25 2011-06-01 Hella KGaA Hueck & Co. Einstellsystem für zumindest ein Lichtmodul einer Beleuchtungseinrichtung eines Fahrzeugs sowie Beleuchtungseinrichtung für ein Fahrzeug
EP2444723A1 (de) 2010-10-21 2012-04-25 Valeo Vision Beleuchtungsvorrichtung für Fahrzeug mit Antivibrationssystem

Also Published As

Publication number Publication date
DE69709200T2 (de) 2002-08-22
ES2170343T3 (es) 2002-08-01
US6238071B1 (en) 2001-05-29
EP0791780B1 (de) 2001-12-19
FR2745061B1 (fr) 1998-05-07
DE69709200D1 (de) 2002-01-31
JPH09315211A (ja) 1997-12-09
FR2745061A1 (fr) 1997-08-22

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