EP1764550A1 - Scheinwerfer mit einer mittels einem zurückziehbaren Anschlag in zwei Betriebsmodus steuerbaren Blende - Google Patents

Scheinwerfer mit einer mittels einem zurückziehbaren Anschlag in zwei Betriebsmodus steuerbaren Blende Download PDF

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Publication number
EP1764550A1
EP1764550A1 EP06291392A EP06291392A EP1764550A1 EP 1764550 A1 EP1764550 A1 EP 1764550A1 EP 06291392 A EP06291392 A EP 06291392A EP 06291392 A EP06291392 A EP 06291392A EP 1764550 A1 EP1764550 A1 EP 1764550A1
Authority
EP
European Patent Office
Prior art keywords
cover
angular position
extreme angular
finger
masking
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
EP06291392A
Other languages
English (en)
French (fr)
Other versions
EP1764550B1 (de
Inventor
Jean Bolis
Nicolas Louvet
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
Original Assignee
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 EP1764550A1 publication Critical patent/EP1764550A1/de
Application granted granted Critical
Publication of EP1764550B1 publication Critical patent/EP1764550B1/de
Ceased legal-status Critical Current
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
    • F21S41/68—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
    • F21S41/698—Shaft-shaped screens rotating along its longitudinal axis
    • 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
    • F21S41/689—Flaps, i.e. screens pivoting around one of their edges

Definitions

  • the invention relates to a motor vehicle headlight which comprises a cover which can be controlled according to two modes of use.
  • This type of projector is generally arranged at the front of the motor vehicle to illuminate the road at the front of the vehicle.
  • the projector emits a beam of light called "high beam” which allows the driver of the vehicle to have an overall visibility of the road in front of him.
  • the light beam emitted by the headlamp is however likely to dazzle drivers of vehicles traveling in the opposite direction on the road.
  • the headlamp When the cover occupies its extreme angular position of illumination, the headlamp emits the beam of road light in order to illuminate the whole of the road to the front of the vehicle.
  • the driver controls the cover in its extreme angular position of illumination when there is no risk of dazzling the driver of a vehicle traveling in the opposite direction.
  • the cover In its extreme angular masking position, the cover allows a regulatory cut of the light beam including masking the light rays which are directed towards the side of the road on which the vehicles roll in the opposite direction.
  • the projector then emits a beam called "dipped beam".
  • the dipped beam illuminates the right side of the road more than the left side of the road.
  • traffic is likely to change sides depending on local legislation.
  • traffic is on the left half of the road while in other countries traffic is on the right half of the road. If the headlamp emits a cross beam suitable for traffic on the right while the vehicle is traveling in a country in which traffic is on the left, drivers traveling in the opposite direction in the right lane may be dazzled then that the left side of the road on which pedestrians are likely to walk will not be well lit.
  • the document FR-A-2769071 proposes already a projector equipped with a cache which is likely to work according to two modes of use, a first mode of use known as "traffic on the right" and a second mode of use known as "trafic left”.
  • the driver is able to control the cache between a first angular position of masking in which the projector emits a beam of passing light for traffic on the right and the angular position of illumination in which the headlamp emits a beam of high beam.
  • the driver is able to control the cache between a second angular position of masking in which the projector emits a beam of low beam for the traffic on the left and the angular position of illumination in which the headlamp emits a beam of high beam.
  • the cover comprises two adjacent wings or active parts which are arranged substantially perpendicular to one another and which extend radially from the axis of rotation of the cover.
  • Each wing has a profile adapted to perform the cut of the beam respectively for traffic on the right and for traffic on the left.
  • This document proposes to switch the projector from the first mode of use to traffic on the right in the second mode of use in traffic on the left by operating an electric motor.
  • the projector may dazzle drivers of vehicles traveling in the opposite direction.
  • the present invention provides a projector of the type described above, characterized in that it comprises a stop which is mounted movably between a retracted position in which the cover is free to pivot between its first extreme angular position masking and its extreme angular illumination position, and an active position to limit the pivoting of the mask between its second extreme angular masking position and its extreme angular illumination position.
  • FIG. 1 a projector 20 which is intended to be arranged in a motor vehicle, for example at the front of the vehicle.
  • the projector 20 comprises a reflector 22 whose inner active optical surface 24 has a generally ellipsoidal shape and which has a front opening 25.
  • the optical axis "A" of the reflector 22 has a longitudinal orientation.
  • the reflector 22 comprises a first rear focus "F1" and a second front focus “F2" which are arranged on the optical axis "A".
  • a light source 26 is arranged in the vicinity of the first focus "F1", inside the reflector 22. This is a discharge lamp 26 which is mounted in the reflector 22 via an orifice mounting provided at the rear vertex 28 of the reflector 22.
  • the projector 20 also comprises an intermediate sleeve 30 of generally frustoconical shape converging towards the front which is coaxial with the optical axis "A".
  • the rear end 32 of the sleeve 30 has a rear opening 33 whose contour corresponds to the outline of the opening
  • the sleeve 30 is intended to be fixed around the periphery of the front opening 25 of the reflector 22.
  • the rear end of the sleeve 30 has a flange 32.
  • the front end of the sleeve 30 is closed by a converging optical lens 34.
  • the lens 34 is arranged so that its optical plane coincides with the second front focus "F2" of the reflector 22.
  • the projector 20 also includes a cover 36.
  • the cover 36 is pivotally mounted about an axis of rotation "B" of transverse orientation with respect to the reflector 22.
  • the axis of rotation "B" of the cover 36 is not concurrent with the optical axis "A" of the reflector 22.
  • the axis of rotation "B” is more particularly arranged in the transverse vertical plane of the front opening 25 of the reflector, near the second front focus "F2". As shown in FIG. 3, the axis of rotation "B" of the cover 36 is more particularly arranged slightly below the second front focus "F2"
  • the cover 36 has a first flange 38 and a second flange 40 adjacent. Each wing 38, 40 extends radially from the axis of rotation "B". The transverse width of the flanges 38, 40 is substantially equal to the transverse diameter of the opening 25 of the reflector 22 at the height of the second focus "F2".
  • the wings 38, 40 meet at an angle at the axis of rotation "B" of the cover 36.
  • the wings 38, 40 here form a right angle so that the second flange 40 is arranged substantially at 90 ° relative to the first flange 38 in a counterclockwise direction of rotation with reference to FIG.
  • Each wing 38, 40 has at least one opaque active portion which is intended to prevent a portion of the light rays "R" to cross when the wing 38, 40 is interposed vertically between the lamp 26 and the second home "F2".
  • the pivoting of the cover 36 around its axis of rotation "B" is here controlled by an electric motor 42 which is arranged outside to the right of the reflector 22, as shown in FIG. 1.
  • the motor 42 could be arranged to the left of the reflector 22.
  • such a projector 20 is likely to be controlled according to two modes of use depending on the traffic direction of the vehicles to the left of the road or to the right of the road.
  • the cover 36 is controlled between a first extreme angular position of masking which is represented in FIG. 3 in which the first wing 38 extends vertically upward from the axis of rotation "B" of the cover 36 so as to mask a first portion of the light rays "R", and an extreme angular illumination position which is shown in Figure 4 in which none of the wings 38, 40 mask the light rays "R".
  • the second flange 40 extends horizontally rearwardly from the axis of rotation "B" of the cover 36. As shown in FIG. 4, when the cover 36 is in its extreme angular illumination position, the second flange 40 extends horizontally forwardly from the axis of rotation "B" of the cover 36.
  • the cover 36 rotates 180 °, in a clockwise direction with reference to FIGS. 3 and 4, during its passage from the first extreme angular position of masking to its extreme angular position. 'lighting.
  • the upper end edge 44 of the first flange 38 is here profiled asymmetrically so as to hide the upper light rays may be oriented towards the left side of the road.
  • the first extreme angular position of masking corresponds to a use of the projector 20 in low beam when the vehicle rolls to the right of the road, while the extreme angular position of illumination corresponds to a use of the projector 20 in high beam .
  • the cover 36 is controlled between a second extreme angular position of masking which is represented in FIG. 6 in which the second wing 40 extends vertically upwards from the axis of rotation. "B" of the cover 36 so as to mask a first portion of the "R" light rays, and an extreme illumination angular position which is shown in Figure 7 in which none of the wings 38, 40 mask the light rays "R" ".
  • the first flange 38 extends horizontally forwards from the axis of rotation "B" of the cover 36. As shown in FIG. 7, when the cover 36 is in its extreme angular illumination position, the first flange 38 extends vertically downwards from the axis of rotation "B" of the cover 36.
  • the cover 36 pivots 90 °, in a clockwise direction with reference to FIGS. 6 and 7, during its passage from the second extreme angular position of masking to its extreme angular position. 'lighting.
  • the upper end edge 46 of the first flange 38 is profiled asymmetrically so as to hide the light rays may be oriented towards the right side of the road.
  • the second extreme angular position masking corresponds to a use of the projector 20 at low beam when the vehicle rolls to the left of the road, while the extreme angular position of illumination corresponds to a use of the projector 20 in high beam .
  • the second extreme angular position of masking is interposed between the first extreme angular position of masking and the position extreme angular lighting.
  • the cover 36 pivots about its axis of rotation "B" in a clockwise movement according to Figure 3.
  • the cover 36 is passed without stopping by its second extreme angular position of pivoting.
  • this passage being very fast, partial masking of the light beam by the second wing 40 is imperceptible by road users.
  • the cover 36 also comprises means for limiting its pivoting between its first extreme angular position of masking and its extreme angular position of illumination.
  • the axis of rotation "B” carries a first and a second radial arm 48, 50.
  • the arms 48, 50 are here arranged on a left end portion of the axis of rotation "B" of the cache 36 according to Figure 1, outside the reflector 22. They are integral in rotation with the wings 38, 40.
  • Each arm 48, 50 is intended to cooperate respectively with a first angular stop 52 and a second angular stop 54 which are integral with the reflector 22.
  • the bracket 56 comprises a horizontal upper wing whose upper face 55 carries the first angular stop 52, and it comprises a second transverse vertical wing which extends downwards from the front end edge of the upper wing whose front face 57 carries the second angular stop 54.
  • the cover 36 also has elastic return means 58 towards its first extreme angular position of masking.
  • This is a helical torsion spring 58 which surrounds the axis of rotation "B" of the cover 36.
  • the spring 58 is more particularly interposed transversely between the arms 48, 50 and the reflector 22.
  • a first leg of 60 end of the spring 58 is fixed to the reflector 22 and a second end tab 62 of the spring 58 is fixed to the first arm 48.
  • the projector 20 comprises an operating mode change mechanism 64 which is here arranged to the left of the reflector 22 with reference to FIG.
  • the operation mode changing mechanism 64 is shown in more detail in FIG. 8.
  • the operating mode changing mechanism 64 includes a retractable finger 66 of longitudinal orientation main axis.
  • the finger 66 has a lower horizontal face 68 which is intended to form a retractable stopper 68.
  • the front end 70 of the finger 66 has a convex hemi-cylindrical face of transverse axis which is arranged in the extension of the abutment face 68 without forming a groove. 'sharp corner. This front face 70 will subsequently be called the thrust face 70.
  • the finger 66 is slidably mounted longitudinally with respect to the reflector 22 between a retracted rear position in which the forward thrust face 70 of the finger 66 is arranged behind the axis of rotation "B" of the cover 36 and a forward active position in which a lower abutment face 68 of the finger 66 is likely to limit the pivoting of the cover 36 about its axis of rotation "B".
  • the finger 66 is here mounted sliding longitudinally on the horizontal surface 55 of the bracket 56.
  • the rear end of the finger 66 is carried by a slide 72 which is slidably mounted in a buttonhole 74 of longitudinal orientation which is formed in the upper surface 55 of the angle iron 56.
  • the finger 66 is made integrally with the slide 72.
  • the axis of rotation "B" of the cover 36 carries here at its left end a cylindrical tilting element 76 which is coaxial with the axis of rotation "B" of the cover 36.
  • the tilting element 76 is integral. in rotation of the axis of rotation "B” of the cover 36.
  • the tilting element 76 has a lug which extends radially generally relative to the axis of rotation "B".
  • the lug comprises a radial bearing face 78 which is here tangent to the cylindrical face of the tilting element 76.
  • the bearing face 78 extends in a transverse vertical plane and is directed towards the rear.
  • the finger 66 is in the retracted retracted position.
  • the cover 36 is thus free to pivot between its first extreme angular position of masking and its extreme angular position of illumination.
  • the first arm 58 is elastically held in abutment against the first angular stop 52 by the return spring 58.
  • the bearing face 78 of the tilting element 76 is then arranged vis-à-vis the front thrust 70 of the finger 66.
  • the bearing face 78 abuts against the front thrust face 70 of the finger 66 in the retracted retracted position.
  • the first arm 48 is then no longer necessary to limit the pivoting of the cover 36 towards its first extreme angular position of masking.
  • the motor 42 drives the cover 36 pivoting about its axis of rotation "B" in a clockwise direction according to FIG. 4 to its extreme angular position. lighting.
  • the second arm 50 of the cover 36 is then in contact with the second angular stopper 54.
  • the cover 36 is then resiliently biased towards its first extreme angular position of masking by the return spring 58.
  • the finger 66 When the projector 20 is to switch to its second mode of use, the finger 66 is controlled to its active position before.
  • the cover 36 is then pivoted from its first position extreme masking angle to its second extreme angular position of masking by the sliding of the finger 66 from its retracted rear position to its active forward position.
  • the convex profile of the front thrust face 70 of the finger 66 is made so that the bearing face 78 rolls on the front face of the thrust 70 of the finger 66 with a very low friction.
  • the front push face 70 of the finger 66 being arranged adjacent to the abutment face 68, in the extension thereof, the forward thrust face 70 guides the bearing face 78 of the tilting element 76 to at the abutment face 68 of the finger 66 during the movement of the finger 66 from its retracted rear position to its active forward position.
  • the cover 36 is then held elastically in its second extreme angular position by the return spring 58.
  • the motor 42 drives the cover 36 pivoting about its axis of rotation "B" by an angle of 90 ° in a clockwise direction according to FIG. up to its extreme angular position of illumination.
  • the second arm 50 of the cover 36 is then in contact with the second angular stopper 54.
  • the cylindrical wall of the tilting element 76 is here tangent with the bearing face 68 of the finger 66. However, it is not necessary for the tilting element 76 to be in contact with the abutment face 68 of the finger 68.
  • the cover 36 is then resiliently biased towards its second extreme angular position of masking by the return spring 58.
  • the sliding of the finger 66 can be performed manually or automatically by means of a motor (not shown).
  • the finger 66 is fixed on a lever which is pivotally mounted about an axis parallel to the axis of rotation "B" of the cover 36.
  • the lever is able to move the finger 66 from its retracted rear position to its active forward position.
  • the finger 66 is replaced by a cam 80 which is pivotally mounted about a transverse axis "C" parallel to the axis of rotation "B" of the cache 36 between a retracted position and an active position.
  • the edge of the cam 80 has the abutment face 68.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Projection Apparatus (AREA)
EP06291392A 2005-09-20 2006-09-01 Scheinwerfer mit einer mittels einem zurückziehbaren Anschlag in zwei Betriebsmodus steuerbaren Blende Ceased EP1764550B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0509603A FR2891045B1 (fr) 2005-09-20 2005-09-20 Projecteur comportant un cache commande entre deux modes d'utilisation au moyen d'une butee escamotable.

Publications (2)

Publication Number Publication Date
EP1764550A1 true EP1764550A1 (de) 2007-03-21
EP1764550B1 EP1764550B1 (de) 2011-10-05

Family

ID=36571041

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06291392A Ceased EP1764550B1 (de) 2005-09-20 2006-09-01 Scheinwerfer mit einer mittels einem zurückziehbaren Anschlag in zwei Betriebsmodus steuerbaren Blende

Country Status (3)

Country Link
EP (1) EP1764550B1 (de)
AT (1) ATE527494T1 (de)
FR (1) FR2891045B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009027711A1 (de) 2008-08-13 2010-04-01 Saia-Burgess Murten Ag Einstellvorrichtung zum Bewegen einer Einstellkomponente und Scheinwerfer
WO2011081607A1 (en) 2009-12-30 2011-07-07 Hella Saturnus Slovenija, Proizvodnja Svetlobne Opreme Za Motorna In Druga Vozila, D.O.O. Motor vehicle light shield
EP2442017A1 (de) * 2010-10-18 2012-04-18 Mes S.A. Fahrzeugscheinwerfer mit einer magnetbetätigten Blende
CN117366518A (zh) * 2023-12-07 2024-01-09 哈尔滨学院 一种4d智慧教室用教学灯

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5339226A (en) * 1992-06-03 1994-08-16 Koito Manufacturing Co., Ltd. Projection head lamp for cars
DE19843287A1 (de) * 1997-09-26 1999-04-01 Valeo Vision Scheinwerfer in elliptischer Ausführung mit veränderlichem Lichtbündel, insbesondere für Kraftfahrzeuge
DE10334553A1 (de) * 2003-07-30 2005-06-16 Hella Kgaa Hueck & Co. Scheinwerfer für Fahrzeuge
DE102004025228A1 (de) * 2004-05-22 2005-12-08 Hella Kgaa Hueck & Co. Scheinwerfer für Fahrzeuge

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5339226A (en) * 1992-06-03 1994-08-16 Koito Manufacturing Co., Ltd. Projection head lamp for cars
DE19843287A1 (de) * 1997-09-26 1999-04-01 Valeo Vision Scheinwerfer in elliptischer Ausführung mit veränderlichem Lichtbündel, insbesondere für Kraftfahrzeuge
DE10334553A1 (de) * 2003-07-30 2005-06-16 Hella Kgaa Hueck & Co. Scheinwerfer für Fahrzeuge
DE102004025228A1 (de) * 2004-05-22 2005-12-08 Hella Kgaa Hueck & Co. Scheinwerfer für Fahrzeuge

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009027711A1 (de) 2008-08-13 2010-04-01 Saia-Burgess Murten Ag Einstellvorrichtung zum Bewegen einer Einstellkomponente und Scheinwerfer
WO2011081607A1 (en) 2009-12-30 2011-07-07 Hella Saturnus Slovenija, Proizvodnja Svetlobne Opreme Za Motorna In Druga Vozila, D.O.O. Motor vehicle light shield
EP2442017A1 (de) * 2010-10-18 2012-04-18 Mes S.A. Fahrzeugscheinwerfer mit einer magnetbetätigten Blende
ITAN20100181A1 (it) * 2010-10-18 2012-04-19 Mes Sa Faro per veicoli dotato di schermo azionato mediante solenoide.
CN117366518A (zh) * 2023-12-07 2024-01-09 哈尔滨学院 一种4d智慧教室用教学灯
CN117366518B (zh) * 2023-12-07 2024-02-09 哈尔滨学院 一种4d智慧教室用教学灯

Also Published As

Publication number Publication date
ATE527494T1 (de) 2011-10-15
FR2891045A1 (fr) 2007-03-23
EP1764550B1 (de) 2011-10-05
FR2891045B1 (fr) 2007-11-02

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