EP1496304A1 - Signalleuchte für Fahrzeuge - Google Patents

Signalleuchte für Fahrzeuge Download PDF

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Publication number
EP1496304A1
EP1496304A1 EP04291747A EP04291747A EP1496304A1 EP 1496304 A1 EP1496304 A1 EP 1496304A1 EP 04291747 A EP04291747 A EP 04291747A EP 04291747 A EP04291747 A EP 04291747A EP 1496304 A1 EP1496304 A1 EP 1496304A1
Authority
EP
European Patent Office
Prior art keywords
screen
light according
signaling
signaling light
pattern
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
EP04291747A
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English (en)
French (fr)
Other versions
EP1496304B1 (de
Inventor
Jean-Claude Gasquet
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
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Filing date
Publication date
Application filed by Valeo Vision SAS filed Critical Valeo Vision SAS
Publication of EP1496304A1 publication Critical patent/EP1496304A1/de
Application granted granted Critical
Publication of EP1496304B1 publication Critical patent/EP1496304B1/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
    • 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
    • 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
    • F21S43/235—Light guides

Definitions

  • the invention relates to a lighting device and / or vehicle signaling, and more particularly at a traffic light for vehicles with at least one compartment equipped with a lamp, with an optical system to form a beam, a screen in front of the lamp and an ice cream.
  • LEDs Light emitting diodes
  • EP 1 149 732 proposes a traffic light with a reflector associated with an optical system composed of lenses, and a pierced opaque screen holes through which the different beams produced by the lenses to give the appearance of mini illuminated beaches.
  • Such a montage is relatively delicate: a not insignificant part of light does not pass in holes and is absorbed by the screen, especially because of the tolerances of manufacturing. The energy efficiency of such a system is relatively low.
  • the object of the invention is, above all, to provide a signaling light to lamp that allows to obtain a pixel appearance with a good performance Energy. It is desirable, furthermore, that the signaling light remains simple and economical manufacturing.
  • a vehicle signaling light of the kind defined above is characterized in that the screen is made of a material transparent or translucent, and includes a set of patterns allowing to provide at the output of said screen, by direct transmission and / or by reflection internally, a spatial distribution of light energy in localized, in particular almost punctual, by transferring the essential the light energy entering the screen.
  • a source bright type incandescent lamp Preferably there is a source bright type incandescent lamp.
  • Led light-emitting diodes
  • “most of the light energy” is understood to mean the makes the screen work optically as if it were, schematically, a flat screen and neutral, so we recover the screen output almost any light energy.
  • the set of patterns is advantageously constituted by the repetition according to a determined geometrical arrangement, for example hexagonal (in honeycomb) or matrix, of an elementary pattern.
  • the patterns are joined, to have the maximum optical efficiency, but it is also possible to provide zones between the patterns that do not have the optical properties of said patterns.
  • the elementary pattern advantageously has the shape of a funnel bounded, on the exit side, by a substantially frustoconical axis of rotation parallel to that of the light beam, which connected by its small base to a coaxial cylindrical pin projecting forwards, this funnel being delimited on the side of the entrance by a cavity of revolution to stepped meridian, preferably substantially at right angles, favoring the total reflection.
  • the revolution cavity may comprise a central portion cylindrical whose bottom is orthogonal to the beam direction to allow a direct transmission, the open end towards the rear of this cavity being followed by a first annular surface orthogonal to the beam direction then by a cylindrical surface of larger diameter than the central part, leading to the back of the screen.
  • the fire may include a style screen pierced with holes specific to receive the ends of the pawns, this style screen hiding the patterns that are find behind him.
  • this style screen hiding the patterns that are find behind him.
  • the ends of the pions protrude the style screen.
  • the front end of a pin is advantageously provided with least one motif, of the torus type, capable of ensuring the spatial distribution of the outgoing light.
  • the traffic light comprises a system collimator capable of forming a pseudo-collimated luminous flux, that is to say parallel or substantially parallel, collected by the rear portion of the screen.
  • the collimator system preferably comprises a Fresnel lens, or variant a parabolic reflector.
  • the material used for the screen may be PMMA (polymethyl methacrylate) or PC (polycarbonate) according to thermal constraints.
  • the screen can have a circular or rectangular shape depending of the desired style. It can be flat or three-dimensional, especially with sliding of each elementary pattern parallel to the direction of the beam bright to obtain apparent outlets, corresponding to the ends cylindrical pins, distributed in space for example according to a surface parallel to the exit ice.
  • the inclination of the generatrices of the frustoconical surface of a motive is chosen to ensure total reflection.
  • the ratio of the input diameter of a pattern to the output diameter is advantageously of the order of three to five, preferably of the order of four.
  • the input diameter of a pattern may be of the order of 15 to 25 mm, in particular 20 mm while the output diameter may be of the order of 3 to 10 mm, especially 5 mm.
  • the red exit ice has pink areas of reduced area corresponding to the usable area illuminated by the exit of a screen pattern.
  • a fire signaling A for a vehicle comprising at least one equipped compartment C of a lamp L, with an optical system S to form a beam, a screen E in front of the lamp and an exit glass G.
  • the output ice G is generally transparent. Although this element is called “ice” it can be made of a transparent material or translucent other than glass.
  • the optical system S consists of a Fresnel lens 1 which collects the luminous flux of the source L following a solid angle of maximum amplitude, including in the axial direction.
  • the midpoint of the filament is substantially at the focus of the lens 1.
  • the Fresnel lens 1 outputs a beam pseudo-collimated beam 2 such as 2a, 2b parallel or substantially parallel.
  • the Fresnel lens 1, or an equivalent optical element traversed by the light beam constitutes a primary screen.
  • the light source may be of the filament lamp type, the least expensive. But we can replace it with one or more diodes electroluminescent, especially in the case where the light source is associated with the Fresnel lens 1.Use electroluminescent diodes light source has advantages: we can then afford to use "crystal", that is to say non-colored, output ice-creams, since the fire color can be obtained directly by the appropriate choice of the diode: we can obtain so-called "Californian” fires, that is to say all white. In addition, the light-emitting diodes are "cold” and heat-resistant compared to conventional filament lamps, the distance between the diodes and the screens can be reduced, and in fact very compact lights in depth.
  • the screen E is a concentrator screen, crystal or colored, in one transparent or translucent material. It consists of a set of patterns 3 to ensure the output of the screen, by direct transmission and / or by internal reflection, a spatial distribution of light energy in areas localized 4 almost punctual, having the appearance of pixels or points elementary. Screen E is located inside Fire A and is lit by the stream bright 2.
  • the elementary pattern 3 of the screen E has the shape of a funnel (Figs.4 and 5) delimited, on the side of the exit of the light, by a surface 5 substantially frustoconical axis parallel to that of the beam luminous.
  • the inclination of the generatrices of the surface 5 with respect to the axis is chosen to ensure the total reflection of a light ray such as 2a which enters directly in the screen E and arrives on the surface 5.
  • the ray 2a undergoes at least another internal reflection before leaving pattern 3 by zone 4.
  • the frustoconical surface 5 is connected, by its small base, to a pawn cylindrical coaxial 6 protruding forward of which the front end, orthogonal to the axis of the surface 5, constitutes the localized zone 4.
  • the pattern 3 is delimited, from side of the entrance of the light, by a cavity of revolution 7 to meridian in Right angle bleachers, promoting total reflection.
  • the cavity 7 (see FIG. 5) comprises a cylindrical central portion 7a whose bottom 7b is orthogonal to the axis of the pattern and to the direction of the beam 2, to allow direct transmission as shown for the light beam 2b in Fig.1.
  • the open end towards the rear of Part 7a is followed by a first annular surface 7c orthogonal to the axis of the pattern 3, then by a cylindrical surface 7d of larger diameter than the central portion 7a, leading to the back of the screen E.
  • the front end of the pin 6 is orthogonal to the axis of the pattern 3 and is advantageously provided with at least one and preferably several patterns 8, torus type, suitable for ensuring the spatial distribution of the outgoing light.
  • the input diameter De (FIG. 6) of a pattern 3 may be of the order of 20mm, while the outlet diameter Ds, corresponding to the diameter of the pawn cylindrical 6, is of the order of 5mm. More generally, the relationship between input diameter De and the output diameter Ds is of the order of four (per example between 3.5 and 4.5, especially between 3.8 and 4.2). Patterns 3 can be organized in honeycombs, the centers of the two-row patterns successive ones being shifted so that one obtains a configuration hexagonal centers. The pitch of the reasons, that is to say the distance between two neighboring centers, is then 17.3mm with the numerical example of dimensions of the previous pattern 3. We can adopt a pattern matrix organization with centers aligned on orthogonal rows and columns between they; the pattern pitch is then 14.1 mm with the same numerical example of dimensions.
  • the screen E may be circular in shape as illustrated in FIG. rectangular shape or other, depending on the style sought.
  • the screen E is molded in one piece, the material used being PMMA (polymethyl methacrylate) or PC (polycarbonate) according to thermal constraints.
  • the color of the primary screen constituted by the lens 1
  • Fig.1 and Fig.7 the reasons 3 are organized in a plane system orthogonal to the axis of the light beam.
  • Fig.10 shows the back of a screen E whose elements 3 have undergone such a shift leading to a three-dimensional version.
  • a B-style screen consisting of an opaque plate comprising distributed holes to receive the pins 6 is advantageously provided for hide the concentrator screen E. Only the front ends of the pawns 6 (Fig.8), through which the light can go out, are visible. These ends front of the pins 6 can protrude on the screen B to improve the vision lateral. Alternatively, the front ends are flush with the surface of the screen B.
  • Fig.6 shows a section of a pattern 3 and illustrates the management of light and the light ray behavior inside the screen E.
  • the set of collimated rays of the incident light beam 2 is concentrated towards the apparent exit zone 4 constituted by the end before the cylindrical pin 6.
  • the main outgoing beam 9 is in the extension of the pin 6.
  • a cone beam 10 whose angle at the apex depends on the inclination of the generators of the frustoconical surface 5 is in additionally obtained.
  • Various light rays of lesser intensity are scattered.
  • the angle of inclination of the generators of the surface 5 on the axis of the pattern 3 is about 30 °.
  • the set of patterns 3 makes it possible to transfer most of the energy light entering the screen E and ensures its spatial distribution output. All It is as if the screen E was a flat, neutral screen with two parallel faces.
  • a beam such as 2a enters the pattern 3 through the face 7c (Fig.5) orthogonal to the radius and undergoes internal reflection on the surface frustoconical 5.
  • the reflected ray is returned to the cylindrical surface of the pion 6 where he undergoes a new internal reflection to reach the front of the pawn 6 from which he comes out undergoing a refraction.
  • Fig.2 shows an alternative embodiment according to which the system optical S includes a parabolic reflector R whose focus is confused with the center of the filament of the lamp L.
  • the concentrator screen E is similar to that of Fig.1, with style B screen.
  • Fig.3 shows in vertical axial section a traffic light, similar to that of Fig. 1, intended to constitute a direction indicator or flashing amber, with a crystal E screen.
  • the embodiment of FIG. 3 aims at ensuring an improvement of the appearance traffic light at the rear of the vehicle when it is off. It is recalled that the rear traffic lights, when turned on, have different colors depending on their function.
  • the backup light is usually white
  • the direction indicator is usually orange or amber
  • the stop and tail lights are red. When the fires are extinguished, it may result in different aspects in the block rear view of the vehicle.
  • Some builders want the appearance of the rear signal block (when off) is more uniform and a homogeneous color, usually red.
  • FIG. 3 using the principle of subtractive synthesis of colors, offers a flashing amber whose red appearance, when off, is significantly improved. A similar provision could be provided for the reverse light.
  • the red Ga exit ice has, in areas such as 11 traversed by a beam from a pin 6, an area 12, forming a pellet, of pink hue allowing to obtain at the exit a beam of amber color by subtraction of color.
  • a white backup light can be obtained with a screen primary 1, S green and pink 12 areas.
  • a flashing function / indicator direction can be obtained with an amber L lamp or a primary screen 1, S amber and pink areas 12.
  • the size of the pink tablets on the ice cream is chosen in particular according to the distance separating 6 pawn pellets: the closer the distance is, the more the pellets may be small, the objective being that the pellets recover the entire light (or most of the light) coming out from the corresponding 6 pawns coaxial.
  • the surfaces of the zones 12 are reduced, which makes it possible to minimize consequently the pink surface of the exit ice.
  • the dimensions pink zones 12 are adapted to the distance between the pin 6 and the ice Ga. The more the pieces 6 are close to the ice Ga, the more the zones 12 are small.
  • the Illuminated surface area is very discreet.
  • the invention makes it possible to obtain, with a conventional lamp system, a signaling light having an appearance similar to that obtained with LEDs much more expensive.
  • the invention also allows to select one or more light-emitting diodes as a light source, in order to obtain fires of different example more compact or "crystal" version.
  • the light output of optical systems using the concept of reflection is excellent.
  • the red appearance of a traffic light at the level of the functions flashing and reversing, can be improved by increasing the trompe-l'oeil effect for the final observer.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Road Signs Or Road Markings (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Glass Compositions (AREA)
  • Liquid Crystal (AREA)
EP04291747A 2003-07-11 2004-07-08 Signalleuchte für Fahrzeuge Not-in-force EP1496304B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0308578A FR2857434B1 (fr) 2003-07-11 2003-07-11 Feu de signalisation pour vehicule
FR0308578 2003-07-11

Publications (2)

Publication Number Publication Date
EP1496304A1 true EP1496304A1 (de) 2005-01-12
EP1496304B1 EP1496304B1 (de) 2008-01-02

Family

ID=33443280

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04291747A Not-in-force EP1496304B1 (de) 2003-07-11 2004-07-08 Signalleuchte für Fahrzeuge

Country Status (5)

Country Link
EP (1) EP1496304B1 (de)
AT (1) ATE382826T1 (de)
DE (1) DE602004010962T2 (de)
ES (1) ES2299808T3 (de)
FR (1) FR2857434B1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2886375A1 (fr) * 2005-05-27 2006-12-01 Valeo Vision Sa Feu de signalisation, notamment pour vehicule automobile
EP1645797A3 (de) * 2004-10-09 2007-01-31 Hella KG Hueck & Co. Leuchteinheit für Fahrzeuge
EP1757857A1 (de) * 2005-08-24 2007-02-28 Bayerische Motoren Werke Aktiengesellschaft Fahrzeugleuchte
EP1762777A3 (de) * 2005-09-08 2007-08-01 Hella KG Hueck & Co. Leuchteinheit für Kraftfahrzeuge
EP2136132A1 (de) * 2008-06-18 2009-12-23 odelo GmbH Leuchte
CN103868026A (zh) * 2012-12-14 2014-06-18 大亿交通工业制造股份有限公司 光源转换系统
DE102006005921B4 (de) * 2006-02-09 2016-09-29 Volkswagen Ag Beleuchtungseinheit für ein Fahrzeug mit einer Lichtquelle und einem Lichtbaustein

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012015393A1 (de) 2012-03-29 2013-02-28 Daimler Ag Leuchte für ein Fahrzeug

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3336178A1 (de) * 1983-10-05 1985-04-25 Robert Bosch Gmbh, 7000 Stuttgart Signalleuchte, insbesondere vordere blinkleuchte, fuer kraftfahrzeuge
EP0326668A2 (de) * 1988-02-02 1989-08-09 Stanley Electric Co., Ltd. Kombinierte Schlussleuchteneinrichtung für Kraftfahrzeuge
EP0732534A1 (de) * 1995-03-13 1996-09-18 Valeo Vision Farbiges Lichtbündel erzeugende und beim ausgeschalteten Zustand andersfarbige Signalleuchte, insbesondere für Kraftfahrzeuge und Verfahren zum Herstellen ihrer Lichtscheibe
EP0784185A1 (de) * 1996-01-10 1997-07-16 Valeo Vision Signalleuchte mit einer Zwischenscheibe zur optischen Behandlung des Lichstrahles und für stilistische Gründe sowie Herstellungsverfahren derselben
FR2763384A1 (fr) * 1997-05-15 1998-11-20 Valeo Vision Feu de signalisation pour vehicule automobile a synthese soustracto-additive
EP1149732A1 (de) 2000-04-26 2001-10-31 Compagnie D'equipements Automobiles Axo Scintex Kfz-Signalleuchte

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991011654A1 (en) * 1990-01-30 1991-08-08 Nauchno-Proizvodstvennoe Obiedinenie Po Avtoelektronike I Avtotraktornomu Elektrooborudovaniju Projector device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3336178A1 (de) * 1983-10-05 1985-04-25 Robert Bosch Gmbh, 7000 Stuttgart Signalleuchte, insbesondere vordere blinkleuchte, fuer kraftfahrzeuge
EP0326668A2 (de) * 1988-02-02 1989-08-09 Stanley Electric Co., Ltd. Kombinierte Schlussleuchteneinrichtung für Kraftfahrzeuge
EP0732534A1 (de) * 1995-03-13 1996-09-18 Valeo Vision Farbiges Lichtbündel erzeugende und beim ausgeschalteten Zustand andersfarbige Signalleuchte, insbesondere für Kraftfahrzeuge und Verfahren zum Herstellen ihrer Lichtscheibe
EP0784185A1 (de) * 1996-01-10 1997-07-16 Valeo Vision Signalleuchte mit einer Zwischenscheibe zur optischen Behandlung des Lichstrahles und für stilistische Gründe sowie Herstellungsverfahren derselben
FR2763384A1 (fr) * 1997-05-15 1998-11-20 Valeo Vision Feu de signalisation pour vehicule automobile a synthese soustracto-additive
EP1149732A1 (de) 2000-04-26 2001-10-31 Compagnie D'equipements Automobiles Axo Scintex Kfz-Signalleuchte

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1645797A3 (de) * 2004-10-09 2007-01-31 Hella KG Hueck & Co. Leuchteinheit für Fahrzeuge
FR2886375A1 (fr) * 2005-05-27 2006-12-01 Valeo Vision Sa Feu de signalisation, notamment pour vehicule automobile
EP1757857A1 (de) * 2005-08-24 2007-02-28 Bayerische Motoren Werke Aktiengesellschaft Fahrzeugleuchte
DE102005040100B4 (de) 2005-08-24 2022-02-03 Bayerische Motoren Werke Aktiengesellschaft Fahrzeugleuchte mit einem ersten Leuchtenfunktionsbereich und wenigstens einem weiteren Leuchtenfunktionsbereich in Trennbereichen zwischen durchleuchtbaren, lichtstreuende Mittel aufweisenden Leuchtkörpern für den ersten Leuchtenfunktionsbereich
EP1762777A3 (de) * 2005-09-08 2007-08-01 Hella KG Hueck & Co. Leuchteinheit für Kraftfahrzeuge
DE102006005921B4 (de) * 2006-02-09 2016-09-29 Volkswagen Ag Beleuchtungseinheit für ein Fahrzeug mit einer Lichtquelle und einem Lichtbaustein
EP2136132A1 (de) * 2008-06-18 2009-12-23 odelo GmbH Leuchte
CN103868026A (zh) * 2012-12-14 2014-06-18 大亿交通工业制造股份有限公司 光源转换系统

Also Published As

Publication number Publication date
FR2857434A1 (fr) 2005-01-14
DE602004010962D1 (de) 2008-02-14
DE602004010962T2 (de) 2009-01-02
ATE382826T1 (de) 2008-01-15
EP1496304B1 (de) 2008-01-02
ES2299808T3 (es) 2008-06-01
FR2857434B1 (fr) 2006-09-29

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