EP1031785B1 - Projecteur pour véhicules - Google Patents

Projecteur pour véhicules Download PDF

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Publication number
EP1031785B1
EP1031785B1 EP00102893A EP00102893A EP1031785B1 EP 1031785 B1 EP1031785 B1 EP 1031785B1 EP 00102893 A EP00102893 A EP 00102893A EP 00102893 A EP00102893 A EP 00102893A EP 1031785 B1 EP1031785 B1 EP 1031785B1
Authority
EP
European Patent Office
Prior art keywords
screen
headlamp according
diaphragm
profile
focal line
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
EP00102893A
Other languages
German (de)
English (en)
Other versions
EP1031785A3 (fr
EP1031785A2 (fr
Inventor
Karsten Dr. Eichhorn
Franz-Josef Kalze
Ewald Topp
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 KGaA Huek and Co
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 Hella KGaA Huek and Co filed Critical Hella KGaA Huek and Co
Publication of EP1031785A2 publication Critical patent/EP1031785A2/fr
Publication of EP1031785A3 publication Critical patent/EP1031785A3/fr
Application granted granted Critical
Publication of EP1031785B1 publication Critical patent/EP1031785B1/fr
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
    • F21S41/698—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
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof

Definitions

  • the invention relates to a headlamp for vehicles with a dish-shaped reflector, arranged with a arranged in the beam path of the reflector lens, with a arranged between the reflector and the lens first aperture, which serves to generate a light-dark boundary of a light beam of the headlamp, and with a second diaphragm arranged above the first diaphragm, which serves to produce a second light-dark boundary.
  • Such a headlight for vehicles has become known from DE 43 01 936 A1.
  • the headlight has an ellipsoidal reflector with an inner and outer focal region. Between the reflector and a lens, a first and second aperture are arranged.
  • the first diaphragm is arranged below the optical axis of the reflector, while the second diaphragm is arranged at a distance above the first diaphragm.
  • the first diaphragm forms, with its focal line, a light-dark boundary which delimits a light beam of the headlight upward, while the second diaphragm images a light-dark boundary which limits the light beam toward the bottom. Due to the upper cut-off line, the light for the distance and the lower cut-off line defines the light close to the vehicle. It is disadvantageous that the lighting near the vehicle is not adjustable depending on the situation.
  • the object of the invention is to make the described in the preamble of claim 1 headlights for vehicles such that a close-up lighting a field in front of the vehicle through the second aperture of the headlamp is variably influenced.
  • This object is achieved according to the invention in that the second diaphragm about an axis of rotation, which extends horizontally and transversely to the optical axis, is adjustable in several rotational positions and has at least two different focal lines. The lighting near the front of the vehicle can be influenced while driving when the second panel is coupled to an electric drive of the headlight.
  • the position of the cut-off line does not change abruptly, but moves continuously when the second diaphragm is formed by a bet whose lateral surface has a focal line for each rotational position.
  • the focal lines can have the most varied course if the lateral surface of the second diaphragm runs deviating and irregular at least in a surface section of the lateral surface connecting two different focal lines.
  • the shaft can be designed so that the axis of rotation passes through the center of mass or near the center of mass of the shaft and thus no balance weights are necessary for the shaft.
  • the distance of most focal lines to the axis of rotation can be made substantially smaller than in waves with cylindrical surfaces.
  • the mass of the shaft is smaller than in cylindrical shafts, and the electric drive means of the shaft can be correspondingly small in size.
  • a first focal line of the second diaphragm is convex. This reduces the lighting in front of the vehicle.
  • the second focal line of the second diaphragm is concave. There is a reduction in side scatter.
  • the first and second focal lines should be symmetrical.
  • the first diaphragm also has different focal lines and builds easily when the first diaphragm is adjustable into a plurality of rotational positions about an axis of rotation parallel to the axis of rotation of the second diaphragm and has at least two different focal lines, one Outer surface of the first panel deviates and irregular at least in a two different focal lines connecting surface portion of the lateral surface.
  • An influence on the apron lighting is dependent on the respective rotational position of the first diaphragm, when the second diaphragm is coupled via a transmission with the first diaphragm. As a result, only a single electric drive is required together for both adjustable aperture.
  • the headlight has an existing plastic, cup-shaped housing (20) whose front opening is closed by a cup-shaped, translucent lens (16).
  • an ellipsoidal reflector (1) is arranged, which is adjustable by an adjusting device, not shown, about two mutually perpendicular axes.
  • the ellipsoidal reflector has in the apex region an opening (19) for receiving a light source (18).
  • the light source (18) is an incandescent lamp or a gas discharge lamp.
  • the light source (18) is arranged in an inner focal location of the ellipsoidal reflector (1).
  • a frame (17) is fixed, which carries a lens (2).
  • the lens (2) collects the light from the light source (18) reflected by the reflector (1). Between the reflector (1) and the lens (2), a first diaphragm (3) is arranged in a focal region of the lens (2).
  • a diaphragm (3) is a shaft which is adjustable about an axis of rotation (11) which extends below an optical axis (6) of the headlight horizontally and transversely to the light exit direction of the headlamp.
  • the diaphragm (3) has a plurality of focal lines (12, 13), which have a different course.
  • a focal line of the diaphragm (3) can be a light-dark boundary of an asymmetrical light beam and another focal line a symmetrical light-dark boundary of a light beam result.
  • the between the focal lines (12, 13) extending surface portion of a lateral surface of the first panel (3) extends in the circumferential direction and in the direction of the axis of rotation (11) irregularly.
  • a second panel (4) is arranged above the first panel (3) .
  • the first and second screens (3 and 4) are supported by a holder (21) fixed to the front edge of the reflector (1).
  • a diaphragm (4) also serves a shaft having different focal lines (7, 8, 9) and between the focal lines (7,8,9) in the circumferential direction and in the direction of the axis of rotation (5) is irregular.
  • the axis of rotation (5) of the second diaphragm (4) also extends horizontally and transversely to the light exit direction.
  • the wide diaphragms (3, 4) are positively coupled via a gear (15).
  • each rotational position of the first diaphragm (3) is associated with a specific focal line of the second diaphragm (4) of the respective active focal line of the first diaphragm (3).
  • a first focal line (7) of the second diaphragm (4) is convex and symmetrical, and a second focal line (8) is concave and symmetrical, while a third focal line (9) is asymmetric and convex.

Landscapes

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

Claims (10)

  1. Projecteur pour véhicules automobiles, comportant un réflecteur (1) en forme de coque, une lentille (2) agencée dans la trajectoire du faisceau du réflecteur (1), un premier obturateur (3), qui est agencé entre le réflecteur (1) et la lentille (2) et qui est destiné à générer une première limite clair-obscur d'un faisceau de lumière du projecteur, et un deuxième obturateur (4), qui est agencé au-dessus du premier obturateur (3) et qui est destiné à générer une deuxième limite clair-obscur, caractérisé en ce que le deuxième obturateur (4) est réglable dans plusieurs positions de rotation autour d'un axe de rotation (5), qui est horizontal et perpendiculaire à l'axe optique (6), et comporte au moins deux lignes focales (7, 8, 9) différentes.
  2. Projecteur selon la revendication 1, caractérisé en ce que le deuxième obturateur (4) est formé par une broche, dont la paroi latérale (10) comporte une ligne focale (7, 8, 9) pour chaque position de rotation.
  3. Projecteur selon la revendication 2, caractérisé en ce que la paroi latérale (10) du deuxième obturateur (4) s'étend en s'écartant d'une surface cylindrique et de manière irrégulière au moins dans une partie de surface de la paroi latérale (10), laquelle relie deux lignes focales (7, 8 ou 9) différentes.
  4. Projecteur selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'une première ligne focale (7 ou 9) du deuxième obturateur (4) a une forme convexe.
  5. Projecteur selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'une deuxième ligne focale (8) du deuxième obturateur (4) a une forme concave.
  6. Projecteur selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'au moins une ligne focale (7, 8) du deuxième obturateur (4) a une forme symétrique.
  7. Projecteur selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'au moins une troisième ligne focale (9) du deuxième obturateur (4) a une forme asymétrique.
  8. Projecteur selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le premier obturateur (3) est également réglable en plusieurs positions de rotation autour d'un axe de rotation (11), qui est parallèle à l'axe de rotation (5) du deuxième obturateur (4), et comporte au moins deux lignes focales (12, 13) différentes.
  9. Projecteur selon la revendication 8, caractérisé en ce qu'une paroi latérale du premier obturateur (3) s'étend en s'écartant d'une surface cylindrique et de manière irrégulière au moins dans une partie de surface de la paroi latérale (10), laquelle relie deux lignes focales (12, 13) différentes.
  10. Projecteur selon la revendication 8 ou 9, caractérisé en ce que le deuxième obturateur (4) est couplé au premier obturateur (3) par l'intermédiaire d'un engrenage (15).
EP00102893A 1999-02-27 2000-02-12 Projecteur pour véhicules Expired - Lifetime EP1031785B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19908641 1999-02-27
DE19908641A DE19908641A1 (de) 1999-02-27 1999-02-27 Scheinwerfer für Fahrzeuge

Publications (3)

Publication Number Publication Date
EP1031785A2 EP1031785A2 (fr) 2000-08-30
EP1031785A3 EP1031785A3 (fr) 2001-11-14
EP1031785B1 true EP1031785B1 (fr) 2006-08-30

Family

ID=7899151

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00102893A Expired - Lifetime EP1031785B1 (fr) 1999-02-27 2000-02-12 Projecteur pour véhicules

Country Status (2)

Country Link
EP (1) EP1031785B1 (fr)
DE (2) DE19908641A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2811408B1 (fr) 2000-07-07 2002-10-18 Valeo Vision Projecteur du genre elliptique notamment pour eclairage de route a photometrie basse amelioree
FR2847655B1 (fr) * 2002-11-21 2005-03-04 Valeo Vision Projecteur elliptique pour vehicule automobile emettant des faisceaux d'eclairage differents
DE10305624A1 (de) * 2003-02-11 2004-08-19 Volkswagen Ag Scheinwerferanordnung für ein Fahrzeug zur Projektion variabler Lichtgeometrien
JP4061233B2 (ja) * 2003-04-23 2008-03-12 株式会社小糸製作所 車両用前照灯
DE10355747B4 (de) * 2003-08-28 2014-10-09 Automotive Lighting Reutlingen Gmbh Kraftfahrzeugscheinwerfer zur Erzeugung unterschiedlicher Leuchtfunktionen
DE102004063836A1 (de) * 2004-12-24 2006-03-30 Daimlerchrysler Ag Scheinwerfersteuerung
DE102006031819A1 (de) * 2006-07-07 2008-01-10 Hella Kgaa Hueck & Co. Projektionsscheinwerfer für Fahrzeuge
DE102007050207A1 (de) 2007-10-20 2009-04-23 Hella Kgaa Hueck & Co. Projektionsscheinwerfer für Fahrzeuge
DE102007050206A1 (de) 2007-10-20 2009-04-23 Hella Kgaa Hueck & Co. Projektionsscheinwerfer für Fahrzeuge
JP2011134583A (ja) * 2009-12-24 2011-07-07 Koito Mfg Co Ltd 車両用前照灯装置
DE102010013558A1 (de) * 2010-03-31 2011-10-06 Hella Kgaa Hueck & Co. Projektionsscheinwerferanordnung für Fahrzeuge
AT509816B1 (de) * 2010-04-22 2012-07-15 Zizala Lichtsysteme Gmbh Scheinwerfer für fahrzeuge
DE102011052552A1 (de) * 2011-08-10 2013-02-14 Hella Kgaa Hueck & Co. Scheinwerfer für Fahrzeuge
DE102011055328B4 (de) * 2011-11-14 2014-03-20 Corian Siedentopf Blende mit mehreren schwenkbeweglich angeordneten Lamellen sowie eine mit einer solchen Blende ausgestattete Leuchte
EP2843298A3 (fr) * 2013-08-30 2015-12-02 SL Corporation Phare pour véhicule

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1245961A (en) * 1968-01-01 1971-09-15 Lucas Industries Ltd Lighting systems for road vehicles
FR2531518A1 (fr) * 1982-08-03 1984-02-10 Roussel Andre Projecteur antieblouissant pour vehicule automobile
DE3528820C2 (de) * 1985-08-10 1994-02-24 Bosch Gmbh Robert Abblendlicht- oder Nebellichtscheinwerfer für Kraftfahrzeuge
JP2769259B2 (ja) * 1992-01-27 1998-06-25 株式会社小糸製作所 自動車用ヘッドランプ
JPH05347101A (ja) * 1992-06-12 1993-12-27 Stanley Electric Co Ltd プロジェクタ型灯具
JP2538132Y2 (ja) * 1992-07-24 1997-06-11 株式会社小糸製作所 投射型自動車用ヘッドランプ
US5373424A (en) * 1992-10-21 1994-12-13 Koito Manufacturing Co., Ltd. Automotive projection headlamp

Also Published As

Publication number Publication date
EP1031785A3 (fr) 2001-11-14
EP1031785A2 (fr) 2000-08-30
DE19908641A1 (de) 2000-08-31
DE50013367D1 (de) 2006-10-12

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