EP0581048B1 - Projecteur de véhicule automobile - Google Patents

Projecteur de véhicule automobile Download PDF

Info

Publication number
EP0581048B1
EP0581048B1 EP93110566A EP93110566A EP0581048B1 EP 0581048 B1 EP0581048 B1 EP 0581048B1 EP 93110566 A EP93110566 A EP 93110566A EP 93110566 A EP93110566 A EP 93110566A EP 0581048 B1 EP0581048 B1 EP 0581048B1
Authority
EP
European Patent Office
Prior art keywords
lens
projection lens
motor vehicle
reflector
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
EP93110566A
Other languages
German (de)
English (en)
Other versions
EP0581048A1 (fr
Inventor
Horst Dietewich
Joachim Ripperger
Tassilo Stempfl
Albert Groeber
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP0581048A1 publication Critical patent/EP0581048A1/fr
Application granted granted Critical
Publication of EP0581048B1 publication Critical patent/EP0581048B1/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
    • F21S41/50—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
    • F21S41/55—Attachment thereof
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/29—Attachment thereof
    • F21S41/295—Attachment thereof specially adapted to projection lenses

Definitions

  • the invention relates to a motor vehicle headlight according to the preamble of patent claim 1.
  • a motor vehicle headlight working on the projection principle is known for example from DE-PS 36 40 773.
  • the projection lens sits in front of the cover plate.
  • motor vehicle headlights according to the preamble of claim 1 are on the market, in which a lens with a flat or curved surface sits between the cover plate and the projection lens. The purpose of this lens is to achieve an optical impression of the headlight that is the same as that of conventional headlights.
  • These headlights do not work according to the projection principle, but only have a reflector, a lens and a cover plate. Compared to headlights that work according to the projection principle, these headlights have a reflector with a significantly larger diameter.
  • a projection headlight with an ellipsoidal reflector is known, in which the projection lens is seated in a ring made of semi-transparent material. Through this ring, headlights should fall into the apron of the vehicle.
  • a motor vehicle headlight in which a diffusing screen is provided to enlarge the optical impression of the headlight.
  • the lens is illuminated by a separate light source and is also mirrored on the back.
  • the light of the headlamp is impaired due to the course of the lens up to the projection lens and thus into the beam path of the headlamp.
  • the invention has for its object to provide a motor vehicle headlamp of the type mentioned, which works on the projection principle, in addition to a cover plate has a lens and which is characterized by a small depth.
  • the penetration of the lens through the projection lens means that no additional space is required compared to such a headlight without a projection lens.
  • the light emerging from the projection lens passes through the lens without loss of light. This only acts on the light emitted laterally by the projection lens and collects it to form a light ring which, in conjunction with the projection lens, gives a flat overall impression of the light source.
  • the seemingly effective light area of the headlamp corresponds to that of conventional headlamps.
  • the lens Since the lens only absorbs an insignificant part of the light emitted by the projection lens, it is not exposed to any significant thermal stress. It is therefore possible to manufacture the lens from transparent plastic and thus save weight.
  • the spreading disc also increases the weight of the headlamp, measured on a headlamp working according to the project principle without a lens, only insignificantly.
  • the lens Due to the relatively low weight of the lens, it can be attached to the edge of the reflector. It then changes the optical properties of the reflector only insignificantly even under mechanical load. Overall, this results in a design that is characterized by advantages in terms of production technology.
  • the lens is attached to the reflector and can be used as a structural unit in the headlight housing.
  • the motor vehicle headlight 1 shown in the figure essentially consists of the following parts: An incandescent lamp 2, a reflector 3, additional reflectors 4 and 5 and a projection lens 6.
  • the headlight 1 sits in a housing 7 and forms, together with other lights, not shown, a structural unit which is covered by a cover plate 8 to the outside.
  • the headlamp also has a diffuser 9, known per se, which is provided with a central opening 10.
  • the projection lens 6 passes through this.
  • the position of the lens 9 with respect to the projection lens 6 is such that the light emerging from the headlight 1 passes through the opening 10 essentially freely and after the cover plate 8 occurs in the exterior of the motor vehicle. Only a small proportion of this light emerges laterally from the projection lens 6 and reaches the lens 9.
  • the effective light exit surface of the headlight 1 acts as a surface through the edge 9 'of the Diffuser 9 is limited. Compared to the light exit surface, which is given by the outer dimensions of the projection lens 6, this light exit surface appears many times larger.
  • the space required by the lens 9 is approximately equal to the space due to the penetration, which is required without such a lens. Due to the small dimensions and the arrangement, the lens 9 can be made of plastic and can be attached to the edge of the reflector 3 via a funnel-shaped additional reflector 3 '(not shown in detail). This results in a headlight that is characterized by an unchanged installation space in addition to a good visual appearance.

Landscapes

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

Claims (3)

  1. Projecteur de véhicule automobile comprenant une source lumineuse (2), un réflecteur (3), une lentille de projection (6), un diffuseur (9) et une vitre de couverture (8) caractérisé en ce que
    - le diffuseur (9) comporte une ouverture centrale (10) traversée au moins partiellement par la lentille de projection (6),
    - la position du diffuseur (9) par rapport à la lentille de projection (6) étant choisie pour que la lumière sortant du projecteur puisse traverser pratiquement librement l'ouverture (10).
  2. Projecteur de véhicule automobile selon la revendication 1,
    caractérisé en ce que
    le diffuseur est en matière plastique transparente.
  3. Projecteur de véhicule automobile selon la revendication 1 ou 2,
    caractérisé en ce que
    le diffuseur est fixé au bord du réflecteur.
EP93110566A 1992-07-28 1993-07-02 Projecteur de véhicule automobile Expired - Lifetime EP0581048B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4224865 1992-07-28
DE4224865A DE4224865A1 (de) 1992-07-28 1992-07-28 Kraftfahrzeug-Scheinwerfer

Publications (2)

Publication Number Publication Date
EP0581048A1 EP0581048A1 (fr) 1994-02-02
EP0581048B1 true EP0581048B1 (fr) 1997-08-27

Family

ID=6464269

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93110566A Expired - Lifetime EP0581048B1 (fr) 1992-07-28 1993-07-02 Projecteur de véhicule automobile

Country Status (2)

Country Link
EP (1) EP0581048B1 (fr)
DE (2) DE4224865A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19704426B4 (de) * 1997-02-06 2005-12-15 Automotive Lighting Reutlingen Gmbh Scheinwerfer für Fahrzeuge nach dem Projektionsprinzip
FR2770618B1 (fr) * 1997-11-04 2000-02-04 Valeo Vision Projecteur du genre elliptique a plage eclairante agrandie
DE19906527A1 (de) * 1999-02-17 2000-08-31 Volkswagen Ag Fahrzeugscheinwerfer
DE10007403A1 (de) * 2000-02-18 2001-08-23 Volkswagen Ag Projektionsscheinwerfer für ein Kraftfahrzeug
DE20211647U1 (de) 2002-07-23 2002-09-26 Pintsch Bamag Antriebs- und Verkehrstechnik GmbH, 46537 Dinslaken Signalleuchte und Leuchtenanordnung für Schienenfahrzeuge
DE102005015939A1 (de) * 2005-04-07 2006-10-12 Hella Kgaa Hueck & Co. Scheinwerfer für Fahrzeuge

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB214002A (en) * 1923-01-18 1924-04-17 William Thomas Coulson An improved motor head light
DE3218703A1 (de) * 1982-05-18 1983-11-24 Westfälische Metall Industrie KG Hueck & Co, 4780 Lippstadt Abgeblendeter fahrzeugscheinwerfer
DE3322181C2 (de) * 1983-06-21 1985-10-10 Westfälische Metall Industrie KG Hueck & Co, 4780 Lippstadt Leuchte für Kraftfahrzeuge, insbesondere Nebelscheinwerfer
DE3633662A1 (de) * 1986-10-03 1988-04-14 Hermann Hablitzel Streuscheibe fuer frontscheinwerfer o.dgl. zum einbau in fahrzeuge
JPH0320961Y2 (fr) * 1986-12-23 1991-05-08
DE3703129A1 (de) * 1987-02-03 1988-08-11 Hella Kg Hueck & Co Scheinwerfereinheit fuer fahrzeuge
DE3942310A1 (de) * 1989-12-21 1991-06-27 Bayerische Motoren Werke Ag Kraftfahrzeug-scheinwerfer
GB2245697A (en) * 1990-05-01 1992-01-08 Jaguar Cars Vehicle lamps

Also Published As

Publication number Publication date
EP0581048A1 (fr) 1994-02-02
DE59307195D1 (de) 1997-10-02
DE4224865A1 (de) 1994-02-03

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