EP1764551A1 - Elliptischer Scheinwerfer mit einem Satz schwenkbarer Blenden - Google Patents

Elliptischer Scheinwerfer mit einem Satz schwenkbarer Blenden Download PDF

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Publication number
EP1764551A1
EP1764551A1 EP06291468A EP06291468A EP1764551A1 EP 1764551 A1 EP1764551 A1 EP 1764551A1 EP 06291468 A EP06291468 A EP 06291468A EP 06291468 A EP06291468 A EP 06291468A EP 1764551 A1 EP1764551 A1 EP 1764551A1
Authority
EP
European Patent Office
Prior art keywords
axis
auxiliary cover
cover
projector
optical axis
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
EP06291468A
Other languages
English (en)
French (fr)
Other versions
EP1764551B1 (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
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Valeo Vision SAS
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Filing date
Publication date
Application filed by Valeo Vision SAS filed Critical Valeo Vision SAS
Publication of EP1764551A1 publication Critical patent/EP1764551A1/de
Application granted granted Critical
Publication of EP1764551B1 publication Critical patent/EP1764551B1/de
Not-in-force 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
    • F21S41/689—Flaps, i.e. screens pivoting around one of their edges

Definitions

  • the projector can be, moreover, bi-function that is to say it can illuminate in low beam and high beam.
  • the main cover is rotatably mounted about an axis transverse to the optical axis so as to occupy two angular positions: a first vertical angular position, in which the profile of the upper edge of the main cover is on the path light beams occulting a first portion of the light beam to form a first asymmetric cut beam particular and a second horizontal angular position in which all the light beam participates in the illumination of the roadway;
  • the main cover In the case of illumination in low beam, the main cover is in vertical position, transversely to the optical axis.
  • the upper edge of this cover generally has a "Z" profile with two horizontal edge portions, slightly offset vertically, the third portion connects the first two edge portions with an inclined slope, for example, 15 °. This profile avoids the dazzle of the driver traveling in the opposite direction, on the other side of the road, and to illuminate the roadway on the opposite side.
  • the main cover is brought to a substantially horizontal position, out of the path of the light rays emitted by the source, so that the entire beam contributes to the illumination of the roadway.
  • the first solution is to provide a system of movable covers, allowing, by manual or electrical actuation, to change the cutoff profile of the projector to switch from a first profile for traffic on the right to a second profile for traffic on the left , which is rigorously symmetrical to the first profile.
  • the techniques presented for example in the document EP-1069373 to set up this solution are complex. For a temporary change of traffic during a short stay abroad, it is better to opt for the second solution.
  • This second solution is to equip the elliptical projector with an auxiliary cover to hide a so-called dazzling area of the profile, so as to go from a profile in "Z" to a non-dazzling profile, generally flat.
  • the present invention provides an elliptical projector equipped with a multi-position cover of the type described above, characterized in that the auxiliary cover is rotatably mounted about an axis of rotation, substantially transverse to the optical axis, arranged in front. the axis of rotation of the main cover, and allowing it to occupy two angular positions, a first angular position of rest, R, in which it is out of the path of the light rays and a second angular position of work, W, in which it hides a second portion of the light beam to form a second non-glare cut beam.
  • the projector 10 comprises an ellipsoidal reflector 12, at least one light source 14, which is generally an arc lamp, arranged at the first focus F1 of the reflector.
  • the optical elements that constitute the projector 10 are arranged along the same optical axis O, which extends in a longitudinal direction.
  • the projector 10 comprises a convergent lens 20 arranged along the same optical axis O, in front of the projector 10, so that its focal plane coincides with the second focus F2 of the reflector 12.
  • the foci F1 and F2 are arranged on the optical axis O.
  • a main cover 16 is arranged at the second focus F2 of the reflector 12. It is mounted substantially transversely to the optical axis O and pivoting about an axis A substantially transverse to the optical axis O so as to occupy two angular positions: a first substantially vertical angular position, in which it obscures part of the light rays emitted by the light source 14, to form a first dipped beam, and a second substantially horizontal angular position, in which it is out of the path light rays, to produce a "complete" light beam corresponding to the high beam.
  • the upper edge 18 of the main cover 16, shown in more detail in Figure 3 has a profile called "Z" with two horizontal edge portions 40 and 42, extending transversely and which are slightly vertically offset.
  • the intermediate edge portion 44 connects the two other horizontal portions 40 and 42 with an inclined slope of, for example, 15 °.
  • the high horizontal edge portion 40 of the upper edge 18 reduces the glare of the driver coming in the opposite direction of circulation and the low horizontal edge portion 42 allows to illuminate the roadway on the opposite side, more particularly the aisle of the road.
  • the main cover 16 advantageously comprises a second cutoff edge (not shown), substantially parallel to the first edge, offset axially along the optical axis O towards the front of the headlamp, in order to overcome colorimetric problems that may appear at the upper edge 18.
  • auxiliary cache 17 During a change of temporary circulation, such as a short stay abroad, it is mandatory to hide a dazzling area 46 delimited by the low horizontal edge portion 42 and the inclined intermediate portion 44.
  • the present invention proposes to use for this purpose an auxiliary cache 17.
  • the auxiliary cover 17, shown in FIG. 1, is arranged in the projector 10.
  • This auxiliary cover 17 is pivotally mounted about an axis B substantially transverse to the optical axis O which is shifted forwardly relative to the axis A of the main cover 16, so as to occupy two angular positions: a working position W, low, in which it comes to obscure the dazzling area 46 and a rest position R, high, in which it is out of the path of light rays.
  • the cover 17 is shown in solid lines in its working position W and in dotted lines in its rest position R.
  • This auxiliary cover 17, a particular embodiment of which is shown in greater detail in FIG. 2, comprises an occulting section 22, which extends transversely in a direction substantially parallel to the main cover 16.
  • This section 22 is retained by at least one rod 24, advantageously two rods 24, which are sufficiently spaced apart from each other along the axis B, and have a curvature such that they do not interfere with the propagation of the light rays whether in the rest R or working position W.
  • the rods 24 extend radially relative to the axis B and each end of the rods 24 is firstly connected to the section 22 and secondly pivotally mounted about the axis B.
  • the section 22 In the working position W, shown in solid lines in FIG. 4, the section 22 is placed at the rear of the main cover 16, at the level of the upper edge 18, so as to obscure the dazzling area 46. rest, R, shown in dashed lines in Figure 4, the section 22 is raised out of the path of light rays.
  • the glare zone 46 has been shown as extending over the entire width of the main cover 16, to take account of the two possible situations: right-hand traffic most of the time, and temporary change for left-hand traffic, and conversely , left-hand traffic most of the time, and temporary change for right-hand traffic.
  • the system is operated, during a border crossing to a country where the traffic is reversed, by means of a manual operation.
  • the manual actuating means comprises an actuating rod 30 which extends along an axis substantially parallel to the optical axis O and offset outwardly of the projector 10, and which is movable in translation from upstream to downstream according to the direction of its axis.
  • the actuating rod 30 has at its rear end a pull rod 32 of generally cylindrical shape having a gripping surface 32a, formed by the side surface of the cylinder and an abutment surface 32b, formed by the base of the cylinder furthest downstream.
  • the rod 30 comprises at its front end, a bend forming the female part 52 of a hinge, such as a ball 50, cooperating with one of the rods 24 of the auxiliary cover 17.
  • a washer 35 is fixed on the actuating rod 30 upstream of the elbow.
  • a hollow cylindrical element 38 is mounted coaxially with the rod 30 in which it slides from upstream to downstream along its axis.
  • the pull tab 32 is integral with a retractable tongue 34, extending in a substantially horizontal plane, and which has a stop 37 which bears on a shoulder of the cylindrical element 38 to lock the actuating rod 30 in a position of Work W of the auxiliary cover 17.
  • the retractable tongue 34 has an elasticity such that it can occupy two positions; a first position, in which the stop 37 prohibits the return of the pull tab 32 and a second position in which the stop 37 is not in the path of the pull tab 32, so as to allow the pull tab 32 to return to its position of rest.
  • An elastic return means such as a compression spring 36, is arranged between the washer 35, integral with the end of the rod 30, and the hollow cylindrical element 38.
  • the user manually pulls the pull tab 32 which is arranged outside the projector 10, so as to be easily accessible.
  • the actuating rod 30 retreating and thus causes, by means of the ball 50, the auxiliary cover 17 to bring it into its low working position W.
  • a translation of the rod 30, towards the rear of the projector 10 brings the washer 35, movable, of the hollow cylindrical member 38, fixed, compressing the spring 36.
  • the stop 37 mounted on the retractable tongue 34 comes into contact with the shoulder of the cylindrical member 38 and blocks the rod of actuation 30 in the working position, which allows to block the compression spring 36 in compression between the cylindrical member 38 and the washer 35, to maintain the auxiliary cover 17 in its working position W.
  • this manual actuation is replaced by a system controlled by a B-axis motor and / or a toothed sector integral with the axis of the motor or any other adapted system, which is actuated by the user, for example by means of an onboard control.
  • the main cover 16 is rotatable about an axis A substantially perpendicular to the optical axis O so as to provide both high beam and low beam functions.
  • the main cover 16 When passing the low beam headlights, the main cover 16 is rotated forward and downward of the projector 10, thus releasing the entire light beam.
  • the support rods 24 are sufficiently offset and the B axis is also sufficiently offset towards the front of the projector to let freely switch the main cover 16.
  • the concealment section 22 is in the low position, which slightly degrades the road function of the projector. But the section 22 has a minimum surface so as to degrade only a minimum of the road function.
  • the actuation to change from low beam to high beam is achieved by means (not shown) which ensure the passage and maintenance of the entire main cover 16 in substantially horizontal position, corresponding to high beam.
  • the main cover 16 ideally comprises an elastic return means (not shown) reducing and maintaining the main cover 16 in a substantially vertical position, not glare, corresponding to the dipped beam, when the actuator is not powered.
  • the cover 16 advantageously comprises a counterweight so that in the vertical position its center of gravity is located below its axis of rotation A so that the cover 16 is naturally replaced by gravity , when the actuation is not powered.
  • the present invention is not limited to the embodiments described and shown but the skilled person will be able to make any variant within his mind. Although having been described in connection with a dual-function projector, that is to say that can selectively emit a beam of crossing lighting, or code, or a beam of road lighting, the invention will naturally be used in a single-function projector, that is to say, emitting only a passing beam, the main cover being fixed in vertical position.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP06291468A 2005-09-20 2006-09-19 Elliptischer Scheinwerfer mit einem Satz schwenkbarer Blenden Not-in-force EP1764551B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0509604 2005-09-20

Publications (2)

Publication Number Publication Date
EP1764551A1 true EP1764551A1 (de) 2007-03-21
EP1764551B1 EP1764551B1 (de) 2012-11-07

Family

ID=36501868

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06291468A Not-in-force EP1764551B1 (de) 2005-09-20 2006-09-19 Elliptischer Scheinwerfer mit einem Satz schwenkbarer Blenden

Country Status (2)

Country Link
EP (1) EP1764551B1 (de)
ES (1) ES2399282T3 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2096353A1 (de) * 2008-02-27 2009-09-02 Koito Manufacturing Co., Ltd. Fahrzeugscheinwerfer

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1069373A1 (de) * 1999-07-13 2001-01-17 Valeo Vision Kraftfahrzeug-Scheinwerfer mit einer verstellbaren, doppelten Lichtblende
US20030021119A1 (en) * 2001-07-26 2003-01-30 Eric Blusseau Elliptical headlamp equipped with masks having transverse pivoting axes
US20030081424A1 (en) * 2001-10-30 2003-05-01 Pierre Albou Lighting device of the elliptical type for an automobile
FR2871552A1 (fr) * 2004-06-09 2005-12-16 Valeo Vision Sa Dispositif projecteur multifonctions de type elliptique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1069373A1 (de) * 1999-07-13 2001-01-17 Valeo Vision Kraftfahrzeug-Scheinwerfer mit einer verstellbaren, doppelten Lichtblende
US20030021119A1 (en) * 2001-07-26 2003-01-30 Eric Blusseau Elliptical headlamp equipped with masks having transverse pivoting axes
US20030081424A1 (en) * 2001-10-30 2003-05-01 Pierre Albou Lighting device of the elliptical type for an automobile
FR2871552A1 (fr) * 2004-06-09 2005-12-16 Valeo Vision Sa Dispositif projecteur multifonctions de type elliptique

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2096353A1 (de) * 2008-02-27 2009-09-02 Koito Manufacturing Co., Ltd. Fahrzeugscheinwerfer
JP2009205892A (ja) * 2008-02-27 2009-09-10 Koito Mfg Co Ltd 車輌用前照灯
US8177403B2 (en) 2008-02-27 2012-05-15 Koito Manufacturing Co., Ltd. Vehicle headlamp

Also Published As

Publication number Publication date
ES2399282T3 (es) 2013-03-27
EP1764551B1 (de) 2012-11-07

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