EP0742409B1 - Kfz-Multifunktionssignalleuchte mit Rückstrahlern und Pseudorückstrahlern - Google Patents

Kfz-Multifunktionssignalleuchte mit Rückstrahlern und Pseudorückstrahlern Download PDF

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Publication number
EP0742409B1
EP0742409B1 EP96400972A EP96400972A EP0742409B1 EP 0742409 B1 EP0742409 B1 EP 0742409B1 EP 96400972 A EP96400972 A EP 96400972A EP 96400972 A EP96400972 A EP 96400972A EP 0742409 B1 EP0742409 B1 EP 0742409B1
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EP
European Patent Office
Prior art keywords
elements
catadioptric
pseudo
area
light
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
EP96400972A
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English (en)
French (fr)
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EP0742409A1 (de
Inventor
Jean-François Louy
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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Publication date
Application filed by Valeo Vision SAS filed Critical Valeo Vision SAS
Publication of EP0742409A1 publication Critical patent/EP0742409A1/de
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    • 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 invention relates to optical devices for signaling, and more particularly a new light multifunction signaling device fitted with elements catadioptric and pseudo-catadioptric.
  • the retro-reflecting elements are today generally made in the form of elements or “needles” in the shape of a triangular trihedron which ensure, by total reflection on the faces of the trihedron, an incident light retroreflection function coming from a direction close to the longitudinal axis of the element.
  • This provides a closing window whose dimensions are not limited by those of the catadioptric zone, keeping for fire or block of lights a completely homogeneous appearance for a outside observer, without visual demarcation at the location of the catadioptric zone.
  • FR-A-2 589 983 which belongs to the plaintiff, describes pseudo-catadioptric elements in the form of quasi-triangular trihedra, for example by angular offset of at least one of the faces of a triangular trihedron.
  • pseudo-catadioptric elements in the form of quasi-triangular trihedra, for example by angular offset of at least one of the faces of a triangular trihedron.
  • these elements the fact that the shape of the trihedron remains very close to that of the triangular trihedra of the elements conventional retro-reflectors, have a general appearance quite similar to that of these, if we is of course placed under lighting conditions ambient or diffuse, such as daylight.
  • the element pseudo-catadioptric does not fulfill any optical function with regard to the light emitted by the source light of the traffic light (or sources of the traffic light block). Indeed, such elements, due to their geometry, do not leave not pass the light emitted from inside the fire, so that it cannot participate in the beam signaling formed.
  • EP-A-0 549 423 which also belongs to the plaintiff, as well as document EP-A1-0 492 890, propose to realize pseudo-catadioptric elements in cone shape, choosing a value for them angle at the top allowing them to pass the incident light emitted from inside the fire.
  • the area including the pseudo-catadioptric elements can then participate in the formation of the signaling beam.
  • the optical function fulfilled by the conical elements is a dispersion function, which does not not allow to control the photometry of the beam of signaling.
  • the distribution of the illumination of the signaling beam in space is determined by means of a "photometric grid" placed at a distance fire, and standards generally impose a illumination included in a solid angle extending, in vertical direction, in an area between 10 ° high and 5 ° low for the zone of greatest intensity the photometric grid, the rest of the beam being dispersed over a solid angle typically between 10 ° and 30 ° both in horizontal direction and vertical.
  • the pseudo-catadioptric elements in the form of cone scatter the light rays in all directions and therefore illuminate all the points of the photometric grid.
  • the cited document proposes to vary the orientation of the axes of the cones of an element pseudo-catadioptric to another, so as to adjust overall light scattering through the zones pseudo-catadioptric.
  • it is only to spread the beam even more to make it uniform, which goes against the general concern of particular photometric conformation of the beam, for which we want to concentrate the maxima lighting in well-defined directions.
  • One of the aims of the present invention is to remedy the drawbacks of known techniques, by offering a multifunction signaling light having closing glass provided with elements pseudo-catadioptrics likely to cooperate with light rays emitted from inside the fire so as to deflect these (and no longer disperse them) and thus participate in the definition of the beam of signage for obtaining a diagram particular photometric.
  • the traffic light multifunctional according to the invention which is of the type comprising a base defining a set of signaling compartments housing sources bright and closed by a window, the window comprising at least a first zone intended to fill a catadioptric retroreflection function and at least a second zone comprising a plurality of elements pseudo-catadioptrics capable of ensuring, by an aspect general in ambient light similar to that of the first zone, a continuity of appearance with this last but without performing its function, is characterized in that at least some of the elements second zone pseudo-catadioptrics are elements each with the inner side of the glass a prismatic shape and fulfilling a function deflector in vertical and / or horizontal direction of light rays from a light source of fire and crossing the ice at the location of this element pseudo-catadioptric.
  • the dimensions of the elements second zone pseudo-catadioptrics are, in projection on the plane tangent to the ice, substantially the same as those of catadioptric elements neighbors, from the first zone.
  • the direction of normal to the prism incidence face can vary from a pseudo-catadioptric element to a other.
  • a group of pseudo-catadioptric elements is arranged in an elongated strip comprising at least one row of these items.
  • these elongated strips of elements pseudo-catadioptric are preferably arranged substantially in alignment with a plurality homologous elongated bands of elements catadioptrics of the first zone.
  • the elongated strips of elements second zone pseudo-catadioptrics and the bands elongated counterparts of catadioptric elements of the first area with which they are aligned have then substantially the same respective widths.
  • these elongated strips pseudo-catadioptric elements are arranged in alternating with a plurality of elongated bands of elements fulfilling a function of dispersion of light rays crossing the ice at the location of this element, such as elements with a toric surface or spherical.
  • the closing glass is made up of two superimposed elements, the element interior carrying on its inner face the various optical elements, and the external element being smooth on both sides.
  • Figure 1 is a front view of a block of lights signage, showing the various areas of different functions.
  • Figure 2 is a schematic section, according to 2-2 of figure 1, of the block of traffic lights of the figure 1.
  • Figure 3 is an enlarged view of the region marked 3 in FIG. 1, showing, on the right, an area fitted with pseudo-catadioptric elements and, on the left, an area provided with true catadioptric elements.
  • Figure 4 is an enlarged view of the region marked 4 in Figure 3, showing the detail of catadioptric and pseudo-catadioptric elements.
  • Figure 5 is a vertical section on 5-5 of Figure 4, of the area comprising the elements pseudo-catadioptric.
  • Figure 6 is a horizontal section, along 6-6 of FIG. 4, of this same zone.
  • the reference 10 designates, generally speaking, a block of traffic lights multifunction including, inside the compartments of a base or case 12, a plurality of light sources 14, the whole being closed by a monobloc closing glass 16.
  • FIGS 3 and 4 show in more detail the contiguous regions of zones 18 and 20.
  • Zone 18 is a zone providing a catadioptric retroreflection function, and for this purpose has elongated bands horizontal 30 of retro-reflecting elements 32 (figure 4).
  • These elements 32 are for example elements such than those described in FR-A-2 590 213, which belongs to the plaintiff, i.e. elements in the form of trirectangle trihedron truncated by parallel planes, so as to give these elements an outline rectangular, the elements 32 being orientable head to tail from one element to the adjacent element; we will be able to refer to the above document for a description more detailed of these catadioptric elements and their optical role.
  • the rows 30 of catadioptric elements are alternated with rows 34 of dispersing elements, for example toric elements, cooperating with light rays emitted by the lamp 14 and reflected on the associated reflector.
  • the luminous flux produced by the lamp 14 is concentrated by the reflector in a beam and dispersed by the toroids to give the illumination diagram desired (here and below, we will assimilate to the case of torus that of the balls, and each time that we speak of "toroids" should be understood to mean “tori or balls ", these two optical means can be substituted without modification of the rest of the elements).
  • This configuration therefore ensures the function position light beam optics, function which must also be fulfilled by zone 18.
  • Zone 20 for its part, comprises a plurality of bands 38 of alternating pseudo-catadioptric elements with strips 42 of beam scattering elements.
  • the pseudo-catadioptric elements 40 are visible in more detail on figure 4 and the sections of the figures 5 and 6, and we will explain below the structure and function.
  • the strips 30 of elements catadioptric and 38 bands of elements pseudo-catadioptrics are arranged in alignment from each other and with respective widths 11 and 12 similar, so as to ensure, on the plan aesthetic, a continuity of appearance between the two areas closing glass.
  • each of the elements pseudo-catadioptrics 40 has substantially the same dimensions (length and width) as the elements retro-reflectors 32 of the row in the extension of which it is, also for aesthetic concern.
  • the bands of pseudo-catadioptric elements 38 are arranged alternately with bands 42 dispersing elements, for example elements toric 44 similar to toric elements 36 and ensuring the same role of dispersion of the light beam previously concentrated by the reflector, so that participate in the definition of the signaling beam corresponding (a brake light beam, for the area 20).
  • Figures 5 and 6 show more precisely the structure of the deviating pseudo-catadioptric elements 40 according to the invention.
  • These elements 40 are prismatic elements, therefore having an optical ray deflection function light directly emitted by the light source (at the difference of toroids 44 which, on the one hand, have a optical function of dispersion and not of deviation and, on the other hand, cooperate with the light rays after reflection on the parabolic reflector associated with the lamp and not with incident rays directly from of the latter).
  • the area occupied by these elements pseudo-catadioptrics according to the invention is therefore, at the difference from the closing windows of the prior art, a useful surface participating in the definition of the signaling beam. They thus allow, if need is, to reduce the total area of functions illuminating while maintaining the continuity of appearance characteristic of their pseudo-catadioptric nature.
  • angles ⁇ (in vertical direction) and ⁇ (in horizontal direction) of each prism are chosen from so as to deflect the incident rays in one direction given, determined according to the illumination of the photometric grid which one wishes to obtain.
  • angles ⁇ and ⁇ vary by element pseudo-catadioptric to another depending on these settings.
  • the closing glass 16 consists of two surfaces or "transparencies" joined 46 and 48, transparency 46 located on the inner side of the glass bearing on its face interior the various catadioptric elements, dispersers or deflectors, and transparency 48 being a transparent smooth on both sides.
  • transparency 46 located on the inner side of the glass bearing on its face interior the various catadioptric elements, dispersers or deflectors
  • transparency 48 being a transparent smooth on both sides.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)

Claims (9)

  1. Multifunktionssignalleuchte für Kraftfahrzeuge mit einem Sockel (12), der eine Einheit aus Signalgebungsabteilen bildet, die Lichtquellen (14) beherbergen und durch eine Scheibe (16) geschlossen sind, wobei die Scheibe wenigsten einen ersten Bereich (18), der zur Erfüllung einer Rückstrahlungsfunktion bestimmt ist, und wenigstens einen zweiten Bereich (20, 22) mit einer Vielzahl von Pseudo-Rückstrahl-Elementen aufweist, der durch ein allgemeines Aussehen bei Umgebungslicht ähnlich dem ersten Bereich mit letzterem ein kontinuierliches Erscheinungsbild zu gewährleisten vermag, ohne jedoch dessen Funktion zu erfüllen,
    dadurch gekennzeichnet, daß wenigstens einige der Pseudo-Rückstrahl-Elemente des zweiten Bereichs Elemente (40) sind, die jeweils auf der Innenseite der Scheibe prismenförmig sind und eine Ablenkungsfunktion in vertikaler und/oder horizontaler Richtung hinsichtlich der direkt von einer Lichtquelle (14) ausgesandten und die Scheibe an der Stelle dieses Pseudo-Rückstrahl-Elementes durchquerenden Strahlen erfüllen.
  2. Signalleuchte nach Anspruch 1,
    bei der die Abmessungen der Pseudo-Rückstrahl-Elemente (40) des zweiten Bereichs in Projektion auf die die Scheibe tangierende Ebene im wesentlichen denen der benachbarten Rückstrahl-Elemente (32) des ersten Bereichs entsprechen.
  3. Signalleuchte nach Anspruch 1,
    bei der die Richtung der Normalen zur Einfallsfläche des Prismas von einem Pseudo-Rückstrahl-Element zum anderen unterschiedlich ist.
  4. Signalleuchte nach Anspruch 1,
    bei der wenigstens eine Gruppe von Pseudo-Rückstrahl-Elementen in einem langgezogenen Streifen (38) angeordnet ist, der wenigstens eine Reihe dieser Elemente aufweist.
  5. Signalleuchte nach Anspruch 4,
    mit einer Vielzahl langgezogener Streifen (38) aus Pseudo-Rückstrahl-Elementen, bei der diese langgezogenen Streifen aus Pseudo-Rückstrahl-Elementen des zweiten Bereichs im wesentlichen in einer Reihe mit einer Vielzahl entsprechender langgezogener Streifen (30) aus Rückstrahl-Elementen des ersten Bereichs angeordnet sind.
  6. Signalleuchte nach Anspruch 5,
    bei der die langgezogenen Streifen aus Pseudo-Rückstrahl-Elementen des zweiten Bereichs und die entsprechenden langgezogenen Streifen aus Rückstrahl-Elementen des ersten Bereichs, die miteinander in einer Reihe angeordnet sind, im wesentlichen jeweils die gleiche Breite (11; 12) haben.
  7. Signalleuchte nach Anspruch 4,
    mit einer Vielzahl langgezogener Streifen (38) aus Pseudo-Rückstrahl-Elementen, die abwechselnd mit einer Vielzahl langgezogener Streifen (42) aus Elementen (44) angeordnet sind, die eine Streufunktion hinsichtlich der die Scheiben an der Stelle dieses Elements durchquerenden Strahlen erfüllen.
  8. Signalleuchte nach Anspruch 7,
    bei der die Elemente (44), denen die Streuung der Lichtstrahlen obliegt, Elemente mit torischer oder sphärischer Oberfläche sind.
  9. Signalleuchte nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, daß die Abdeckscheibe (16) aus zwei übereinanderliegenden Elementen (46, 48) gebildet ist, wobei das innenliegende Element (46) auf seiner Innenseite die verschiedenen optischen Elemente (32, 40) trägt und das außenliegende Element (48) auf beiden Seiten glatt ist.
EP96400972A 1995-05-09 1996-05-07 Kfz-Multifunktionssignalleuchte mit Rückstrahlern und Pseudorückstrahlern Expired - Lifetime EP0742409B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9505476A FR2733949B1 (fr) 1995-05-09 1995-05-09 Feu de signalisation multifonctions pour vehicule automobile, equipe d'elements catadioptriques et pseudo-catadioptriques
FR9505476 1995-05-09

Publications (2)

Publication Number Publication Date
EP0742409A1 EP0742409A1 (de) 1996-11-13
EP0742409B1 true EP0742409B1 (de) 2002-11-13

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EP96400972A Expired - Lifetime EP0742409B1 (de) 1995-05-09 1996-05-07 Kfz-Multifunktionssignalleuchte mit Rückstrahlern und Pseudorückstrahlern

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EP (1) EP0742409B1 (de)
DE (1) DE69624754T2 (de)
ES (1) ES2186761T3 (de)
FR (1) FR2733949B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19844594A1 (de) * 1998-09-29 2000-05-11 Hella Kg Hueck & Co Leuchte für Kraftfahrzeuge
EP4741707A1 (de) * 2024-11-11 2026-05-13 Hella Autotechnik Nova s.r.o. Dickwandiges element eines scheinwerfers

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1099408B (de) * 1958-08-05 1961-02-09 Westfaelische Metall Ind K G H Signalleuchte, insbesondere fuer Kraftfahrzeuge
US4120018A (en) * 1977-01-27 1978-10-10 Dominion Auto Accessories Limited Stop, tail and signal lamp
DE9001659U1 (de) * 1990-02-13 1990-04-19 Hella KG Hueck & Co, 4780 Lippstadt Heckleuchte für Fahrzeuge
DE4025393C1 (de) * 1990-08-10 1992-01-09 Hella Kg Hueck & Co, 4780 Lippstadt, De

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Publication number Publication date
FR2733949B1 (fr) 1997-08-01
EP0742409A1 (de) 1996-11-13
ES2186761T3 (es) 2003-05-16
FR2733949A1 (fr) 1996-11-15
DE69624754D1 (de) 2002-12-19
DE69624754T2 (de) 2003-08-14

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