EP0635674A1 - Kfz-Signalleuchte mit Abdeckscheibe und optischer Zwischenscheibe - Google Patents

Kfz-Signalleuchte mit Abdeckscheibe und optischer Zwischenscheibe Download PDF

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Publication number
EP0635674A1
EP0635674A1 EP94401693A EP94401693A EP0635674A1 EP 0635674 A1 EP0635674 A1 EP 0635674A1 EP 94401693 A EP94401693 A EP 94401693A EP 94401693 A EP94401693 A EP 94401693A EP 0635674 A1 EP0635674 A1 EP 0635674A1
Authority
EP
European Patent Office
Prior art keywords
light
optical elements
windows
intermediate screen
indicator
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
EP94401693A
Other languages
English (en)
French (fr)
Other versions
EP0635674B1 (de
Inventor
Jean-Marie Brel
Gérard Ressicaud
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 EP0635674A1 publication Critical patent/EP0635674A1/de
Application granted granted Critical
Publication of EP0635674B1 publication Critical patent/EP0635674B1/de
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
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/255—Filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255

Definitions

  • the present invention relates to a motor vehicle signaling light with an intermediate screen.
  • the color of a signaling light (typically red or amber) is obtained by tinting the indicator light or the lamp, to color the light rays which pass through it.
  • This document describes a signaling light for a motor vehicle, using such an intermediate screen interposed between the indicator and the light source, both colorless.
  • This intermediate screen is made of a translucent material, for example red or amber, depending on the function of the traffic light. It has on its outer face bands or other opaque patterns, between which are defined windows for the passage of light rays.
  • a set of converging dioptres is placed on the internal face of the screen to converge the light rays emitted by the lamp towards these windows. This ensures spreading of the light beam in a direction transverse to that of the strips.
  • Such a light also comprises on the internal face of the sight glass a set of dioptres making it possible to spread the beam in a direction generally perpendicular to the aforementioned first direction, so as to satisfy the regulations as regards photometry and in particular in emission angle material horizontally and vertically.
  • the present invention aims to overcome these drawbacks, and to propose a signaling light with colored emission and of neutral appearance when it is off, which reduces the optical work required of the indicator, and which in particular allows the use of a smooth indicator on its two sides, particularly sought after at present by stylists.
  • the subject of the present invention is a signaling light for a motor vehicle, of the type comprising a light source, an external indicator, an intermediate screen, placed between the light source and the colorless external indicator, which has on its external surface opaque zones which delimit windows for the passage of light, and first optical elements formed on the interior side of the intermediate screen to converge the light coming from the source and from the flux recuperator towards said windows by giving it spread in a first direction, characterized in that the intermediate screen comprises, on the external side, at the level of at least part of the windows for the passage of light, second optical elements ensuring spreading of the light in a second direction generally perpendicular to the first.
  • a signaling light for a motor vehicle comprises a filament lamp 10, a light flux recuperator 30, an intermediate screen 20, and an indicator 40.
  • the indicator 40 is made of material transparent plastic, generally colorless, in which case light radiation can pass through it without changing its color.
  • the flux recuperator consists of a reflector 30, for example in the form of a paraboloid, the focal point of which is located in the vicinity of the filament 11.
  • the intermediate screen 20 consists of a tinted translucent plastic material, for example of amber color for a direction indicator light, or red color for other functions.
  • the lamp is colored and the intermediate screen is then colorless.
  • first optical elements made up of converging cylindrical lenses 23.
  • Each window 22 for the passage of light thus corresponds a lens 23, designed to converge light towards this window.
  • the light rays R emitted by the filament 11 or reflected by the reflector 30 are therefore concentrated towards the windows 22 and, at the outlet of the screen 20, therefore exhibit a certain divergence in the horizontal direction, as illustrated.
  • the focal point of the converging lenses 23 is situated substantially in the center of the respective windows 22.
  • the majority of the beam emitted by the filament crosses the intermediate screen 20, and exhibits at its output a spread in the horizontal direction.
  • the intermediate screen prevents a significant proportion of the incident rays 50 coming from the outside from entering the lamp, and likewise prevents a significant proportion of the rays 51 which have entered it and which would be reflected by the reflector 30, to come out.
  • the opaque areas of the external surface of the intermediate screen are preferably painted in a neutral shade (white, gray, etc.) or provided with a reflective coating (for example metallized). Thanks to these means, the fire is given a neutral and colorless appearance, and if necessary slightly shiny, when not in operation.
  • the intermediate screen also comprises, on its external face and at the level of the light passage windows 22, second optical elements 24.
  • These optical elements are preferably produced in one piece with the screen 20, having come from molding, and have the object of ensuring spreading of the beam in a direction generally perpendicular to the direction of spreading provided by the lenses 23, that is to say in l 'species vertically.
  • These elements 24 successively comprise a plurality of divergent individual devices whose generator is horizontal.
  • the light rays emitted by the filament 11 are spread by means of the first and second optical elements in two substantially perpendicular directions.
  • the divergent optical elements 24 are made up of convex horizontal cylindrical lenses, to ensure a uniform spreading of the light in the vertical direction.
  • the divergent optical elements 24 are double prisms having in vertical section a shape of an isosceles triangle. In this way, preference is given to spreading the light leaving the screen 22 in two directions inclined respectively upwards and downwards relative to a horizontal direction.
  • the optical elements 24 are simple prisms each having a vertical section in the shape of a right triangle. Depending on the orientation of these prisms, we favor a direction of deflection of the radiation, downwards or upwards. In this example, we plan alternating strips of prisms deflecting the light up and down. The prism angles can of course vary as a function of the photometry to be reached.
  • the external optical elements 24 are preferably arranged in grooves 25 separating the adjacent opaque zones 21, so as to be flush with or set back from a common plane of said zones 21 In this way, the masking of the windows 22 provided with the elements 24 during the step of coating the zones 21 (for example vacuum metallization) is facilitated.
  • the radiation at the screen outlet is spread in two perpendicular directions, this spreading being able to be substantial and making it possible to cover angles reaching 40 ° relative to the axis of the light. Consequently, the optical role of the indicator can be considerably reduced.
  • the indicator can be either smooth, or equipped with diffusion elements (beads or the like) very slightly pronounced, which is advantageous both with regard to the cost of manufacturing the indicator and the aesthetic appearance of the fire.
  • the intermediate screen can adopt various shapes and various positions in the fire.
  • the screen is planar and arranged perpendicular to the optical axis of the light.
  • the screen is planar and obliquely disposed both vertically and horizontally relative to the optical axis. This obliquity can be reversed ( Figures 5c and 6c), or exist only horizontally or vertically.
  • the screen intermediate is curved, and is connected to the reflector substantially at the transition between the bottom of said reflector and its cheeks.
  • the screen has a curve opposite to that of Figures 5d and 6d, adopting substantially the shape of the bottom of the reflector.
  • all other forms and arrangements can be envisaged.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP94401693A 1993-07-23 1994-07-22 Kfz-Signalleuchte mit Abdeckscheibe und optischer Zwischenscheibe Expired - Lifetime EP0635674B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9309119A FR2708082B1 (fr) 1993-07-23 1993-07-23 Feu de signalisation à voyant et écran intermédiaire pour véhicule automobile.
FR9309119 1993-07-23

Publications (2)

Publication Number Publication Date
EP0635674A1 true EP0635674A1 (de) 1995-01-25
EP0635674B1 EP0635674B1 (de) 1997-10-22

Family

ID=9449582

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94401693A Expired - Lifetime EP0635674B1 (de) 1993-07-23 1994-07-22 Kfz-Signalleuchte mit Abdeckscheibe und optischer Zwischenscheibe

Country Status (4)

Country Link
EP (1) EP0635674B1 (de)
DE (1) DE69406371T2 (de)
ES (1) ES2110714T3 (de)
FR (1) FR2708082B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19826905A1 (de) * 1997-06-30 1999-01-07 Valeo Vision Signalleuchte mit Zwischenscheibe zur optischen Behandlung und mit Designfunktion
EP4372270A1 (de) * 2022-11-21 2024-05-22 Marelli Automotive Lighting Italy S.p.A. Beleuchtungs- und/oder signalvorrichtung für kraftfahrzeuge mit verbesserter bildschirmvorrichtung

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002093209A (ja) * 2000-09-11 2002-03-29 Koito Mfg Co Ltd 車両用灯具
DE10218661A1 (de) * 2002-04-26 2003-12-24 Hella Kg Hueck & Co Signalleuchte
DE102021107947A1 (de) * 2021-03-30 2022-10-06 HELLA GmbH & Co. KGaA Beleuchtungsvorrichtung für Fahrzeuge und Herstellungsverfahren einer Lichtscheibe

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0081361A1 (de) * 1981-12-08 1983-06-15 LUCAS INDUSTRIES public limited company Leuchte

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0081361A1 (de) * 1981-12-08 1983-06-15 LUCAS INDUSTRIES public limited company Leuchte

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19826905A1 (de) * 1997-06-30 1999-01-07 Valeo Vision Signalleuchte mit Zwischenscheibe zur optischen Behandlung und mit Designfunktion
EP4372270A1 (de) * 2022-11-21 2024-05-22 Marelli Automotive Lighting Italy S.p.A. Beleuchtungs- und/oder signalvorrichtung für kraftfahrzeuge mit verbesserter bildschirmvorrichtung

Also Published As

Publication number Publication date
FR2708082A1 (fr) 1995-01-27
FR2708082B1 (fr) 1995-10-13
DE69406371D1 (de) 1997-11-27
EP0635674B1 (de) 1997-10-22
ES2110714T3 (es) 1998-02-16
DE69406371T2 (de) 1998-02-26

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