EP1541920A1 - Light for signalling comprising electroluminescent diodes - Google Patents

Light for signalling comprising electroluminescent diodes Download PDF

Info

Publication number
EP1541920A1
EP1541920A1 EP04292932A EP04292932A EP1541920A1 EP 1541920 A1 EP1541920 A1 EP 1541920A1 EP 04292932 A EP04292932 A EP 04292932A EP 04292932 A EP04292932 A EP 04292932A EP 1541920 A1 EP1541920 A1 EP 1541920A1
Authority
EP
European Patent Office
Prior art keywords
collimation
lenses
light according
plate
ribs
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
EP04292932A
Other languages
German (de)
French (fr)
Other versions
EP1541920B1 (en
Inventor
Patrice Bocktaels
Sylvain Perrot
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.)
Sagemcom Broadband SAS
Original Assignee
Sagem SA
Sagem Communications 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 Sagem SA, Sagem Communications SAS filed Critical Sagem SA
Publication of EP1541920A1 publication Critical patent/EP1541920A1/en
Application granted granted Critical
Publication of EP1541920B1 publication Critical patent/EP1541920B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/12—Combinations of only three kinds of elements
    • 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
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • 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
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/08—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures
    • F21V11/12—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures of slot type
    • 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
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
    • F21W2111/02—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00 for roads, paths or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to a traffic light with light-emitting diodes.
  • the object of the invention is to propose a fire signaling having a structure minimizing the ghost effect, preferably also improving the yield of light transmission.
  • a traffic light comprising a housing closed by a front lens and wherein is mounted a support plate carrying electroluminescent diodes, a transparent collimation plate interposed between the light-emitting diodes and the lens front and having on a side facing the front lens of diffusion lenses comprising cylindrical ribs extending parallel to the to each other, and an anti-ghost mask interposed between the collimation plate and the front lens and having opaque segments delineating slots extending in a direction corresponding to the ribs cylindrical.
  • the collimation plate features collimation lenses on one side facing the light-emitting diodes.
  • collimation lenses are lenses of individual aspheric revolution arranged opposite electroluminescent diodes.
  • the beam emitted by the light-emitting diodes is immediately concentrated in a parallel beam with a yield important transmission.
  • Collimation lenses have an axis of revolution shifted with respect to an axis of revolution of the light-emitting diode corresponding.
  • a beam is thus obtained parallel which is deflected at an angle corresponding to the distance between the axes of revolution so that the deviation sought is obtained by a simple determination the distance of shift between the axes of revolution.
  • the collimation plate has an axis of symmetry and has circular collimation ribs centered on the axis of symmetry, and the light-emitting diodes are arranged in a matrix in the vicinity from the focus of the collimation veins.
  • the traffic light comprises in known manner in itself a housing 1 closed by a front lens 2 and containing a support plate 3 supporting diodes electroluminescent 4. Also known per se the support plate 3 is preferably a printed circuit connected to a control organ (not shown) ensuring switching on and off the light-emitting diodes 4.
  • the traffic light comprises in addition a collimation plate 5.
  • the plate of collimation 5 has a face provided with collimation lenses 6 turned towards light-emitting diodes 4, and an opposite face provided with diffusion lenses 7.
  • each collimation lens 6 corresponds to a light-emitting diode 4 and has a paraboloid-shaped surface whose axis of revolution 8 is in the same vertical plane as the axis of revolution 9 of the diode.
  • electroluminescent 4 corresponding and extends parallel thereto but is shifted down by a distance d 1 (see Figures 5 and 6).
  • the collimation lenses 6 thus ensure not only a paralleling of the beam emitted by the light-emitting diode 4 but also a deflection of the parallel beam downwards as illustrated in FIG. 5.
  • the collimating lenses 6 are contiguous to one another and have a hexagonal contour which corresponds to the arrangement of the light-emitting diodes 4 on the support plate 3.
  • the face of the collimation plate 5 turned towards the light-emitting diodes 4 therefore has no protruding edge which can cause a parasitic diffusion of the light emitted by a external source.
  • the lenses 7 are constituted by ribs vertical cylindrical having a basic arcuate contour of circle so that the beam coming out of the plate of collimation 5 remains a parallel beam in a plane vertical ( Figure 5) but becomes a convergent beam in a horizontal plane ( Figure 6), this beam becoming diverging beyond the focus of the diffusion lenses 7.
  • the collimation plate 5 preferably comprises a multiplicity of diffusion lenses 7 for the same collimation lens 6.
  • the cylindrical ribs 7 are contiguous to each other and extend continuously over the entire height of the collimation plate 5 so that on the face of diffusion the collimation plate does not involve no no more protruding edge that could cause broadcasts parasites.
  • the collimation plate 5 is preferably made by injection from a plastic material transparent.
  • the traffic light comprises an anti-ghost mask 11 disposed between the collimation plate 5 and the front lens 2.
  • the anti-ghost mask 11 is a perforated plate comprising a series of openings 12 each corresponding to the beam coming out of the collimation plate 5 emitted by a light-emitting diode 4.
  • the anti-ghosting screen 11 is arranged parallel to the collimation plate 5 at a distance d 2 from it corresponding to the distance of the foci 10 from the diffusion lenses 7 (FIG. 6).
  • Each opening 12 has a series of vertical bars 13 having a diamond-shaped section spaced from one another to define vertical slots 14 having a width just sufficient to allow the convergent-divergent beams from the diffusion lenses 7 to pass (FIG. ).
  • the distance between the lenses of Cylindrical Diffusion 7 and Collimation Lenses 6 is adapted so that a parasitic beam that would reach to cross the diffusing lenses 7 and to reflect on collimation lenses 6 can not get focus in the slots 14 of the anti-ghost mask. The ghost effect is therefore further reduced by this arrangement.
  • the anti-ghost mask 11 can be made by injection from an opaque plastic material, preferably a dark matter so that the fire appears black to a user when light-emitting diodes 4 are off.
  • the lens 2 of the traffic light according to the invention can to be transparent clear, that is to say untinted, without increase the risk of a ghost effect. The yield of transmission is therefore increased compared to signaling that use a tinted front lens to obtain reflections reducing the ghost effect.
  • the front lens 2 has some ribs 15 to ensure dissemination according to guidelines which would not be reached by the scattered beam by the diffusion lenses 7.
  • the number of ribs 15 is however much smaller than the number of ribs usually necessary to ensure dissemination satisfactory in traditional traffic lights.
  • the traffic light has as before a front lens 102 behind which extends an anti-ghost mask 111 which is attached a collimation plate 105 whose rear face is illuminated by a matrix of diodes 104.
  • the collimation plate 105 has a front face with cylindrical ribs 107 extending vertically.
  • the anti-ghost mask 111 is in the form of a grid comprising vertical bars delimiting vertical slits.
  • the anti-ghost mask 111 is preferably disposed at a distance of the collimation plate corresponding to a plane of focal points of diffusion lenses 107.
  • the rear face of the collimation plate 105 has circular collimation ribs centered on the axis of symmetry of the collimation plate.
  • the ribs of collimation comprise a first group 100 of ribs 101 in the central part of the collimation plate and a second group 103 of ribs 106 in the part peripheral of the collimation plate.
  • the light-emitting diodes 104 are grouped according to a matrix of weak dimensions, for example according to a square matrix having a dimension of 50 mm for a traffic light having a diameter of 300 mm, which is arranged in the vicinity of the focus of the collimation veins, the axis of symmetry 115 of the matrix of light-emitting diodes 104 being shifted upwards by a distance d3 from the axis of symmetry 116 of the collimation plate 105 to ensure a deviation of the outgoing light beam of the collimation lens.
  • a matrix of weak dimensions for example according to a square matrix having a dimension of 50 mm for a traffic light having a diameter of 300 mm, which is arranged in the vicinity of the focus of the collimation veins, the axis of symmetry 115 of the matrix of light-emitting diodes 104 being shifted upwards by a distance d3 from the axis of symmetry 116 of the collimation plate 105 to ensure
  • the ribs 101 of the central portion 100 of the collimation plate 105 have a cylindrical face 108 which extends in parallel to the axis of symmetry 116 of the collimation plate and a conical face 109 presenting with respect to incident rays emitted by light-emitting diodes 104 an angle allowing refraction of these incident rays for the refracted rays to form a beam substantially parallel to the axis of symmetry 116 of the plate of collimation with regard to the diode located at focus, and tilted down for the diodes above fireplace.
  • the incident rays striking the faces 108 produce refracted rays which are lost rays, the ribs 101 will be so expected to have a small face 108 compared to the face 109.
  • the ribs 106 of the peripheral portion 103 comprise a cylindrical face 112 parallel to the symmetry axis of collimation and a conical face 113 inclined at an equal or slight angle lower than the angle of incidence of the rays emitted by the light-emitting diodes 104 to this part of the collimation plate.
  • the incident rays then undergo a refraction at the time of crossing the face 112 and a reflection on the face 113 to also form a beam of reflected rays extending parallel to the axis of symmetry 116 of the collimation plate with respect to the diode located at the focus, and inclined towards the low for the diodes above the fireplace.
  • the face of the front lens 102 facing the collimation plate 105 has horizontal grooves 114 shaped of concave cylinder portion.
  • the grooves 114 are made so that the surface of the part upper grooves 114 is substantially vertical while the surface of the lower part of the grooves 114 has a more pronounced angle with respect to a vertical plane. It is also possible to provide grooves 114 with different inclinations depending on the part of the frontal lens in which they extend.
  • the mask has been illustrated in the form of a perforated opaque plate, it can also be made in the form of a transparent plate on which the slots 14 are delimited by strips opaque printed by screen printing, or in the form of a machined or engraved metal plate. We can further minimize still the ghost effect by adding reliefs reflective on the face of the mask 11 facing the front lens 2.
  • the lenses have been described in the form of cylindrical ribs, they can to be made according to point lenses arranged according to rows to which correspond the slots of the anti-ghost mask.
  • cylindrical ribs 7 have been described with a basic outline in an arc, one may provide for different forms in order to obtain a special diffusion of light beams.
  • collimation lenses have been described with a parabolic shape that ensures a performance optimum transmission
  • lenses can be made of collimation having an aspheric form even a spherical shape without departing from the scope of the invention.
  • the downward deviation is achieved with optimum performance with an axis of the collimation lens parallel to the axis of the corresponding diode, one can also get a deviation by tilting the axis of the collimation lens but the transmission efficiency is reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Optical Communication System (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
  • Traffic Control Systems (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Led Devices (AREA)

Abstract

The light has a case (1) closed by a frontal lens (2) and in which a support plate (3) is mounted for carrying light emitting diodes (4). A transparent collimation plate (5) has a collimation lens (6) and a cylindrical diffusion lens (7) curved towards the diodes and frontal lens, respectively. An anti-phantom screen (11) is interposed between the collimation plate and frontal lens. The screen has opaque segments delimiting slits (14).

Description

La présente invention concerne un feu de signalisation à diodes électroluminescentes.The present invention relates to a traffic light with light-emitting diodes.

ARRIERE PLAN DE L'INVENTIONBACKGROUND OF THE INVENTION

On sait que pour de multiples raisons, notamment pour réduire la puissance électrique consommée, les feux de signalisation traditionnels à lampes et déflecteurs sont de plus en plus fréquemment remplacés par des feux de signalisation dont le faisceau lumineux est émis par une matrice de diodes électroluminescentes montées dans un boítier qui est fermé par une lentille frontale.We know that for many reasons, especially to reduce the electrical power consumed, the fires traditional signaling lamps and baffles are more and more frequently replaced by fires signaling system whose light beam is emitted by a matrix of light-emitting diodes mounted in a housing that is closed by a front lens.

On sait également que pour être convenablement perçu par les usagers des voies de circulation sur lesquelles les feux de signalisation sont implantés, il est nécessaire que le faisceau émis par la matrice de diodes soit convenablement concentré, dévié, et dispersé, aussi bien dans un plan vertical que dans un plan horizontal. En outre, il est nécessaire de prévoir des dispositions pour éviter un effet fantôme, c'est-à-dire une illusion d'allumage du feu obtenue lorsque le feu de signalisation est éclairé par le soleil sous une faible incidence.We also know that to be properly perceived by the users of the traffic lanes on which traffic lights are implanted it is necessary that the beam emitted by the matrix of diodes be properly focused, deviated, and dispersed, also well in a vertical plane than in a horizontal plane. In addition, it is necessary to provide to avoid a ghost effect, that is, an illusion ignition of the fire obtained when the traffic light is illuminated by the sun at a low incidence.

OBJET DE L'INVENTIONOBJECT OF THE INVENTION

Le but de l'invention est de proposer un feu de signalisation ayant une structure minimisant l'effet fantôme, de préférence en améliorant également le rendement de transmission lumineux.The object of the invention is to propose a fire signaling having a structure minimizing the ghost effect, preferably also improving the yield of light transmission.

BREVE DESCRIPTION DE L'INVENTIONBRIEF DESCRIPTION OF THE INVENTION

En vue de la réalisation de ce but, on propose selon l'invention un feu de signalisation comportant un boítier fermé par une lentille frontale et dans lequel est montée une plaque support portant des diodes électroluminescentes, une plaque de collimation transparente interposée entre les diodes électroluminescentes et la lentille frontale et comportant sur une face tournée vers la lentille frontale des lentilles de diffusion comprenant des nervures cylindriques s'étendant parallèlement les unes aux autres, et un masque anti-fantôme interposé entre la plaque de collimation et la lentille frontale et comportant des segments opaques délimitant des fentes s'étendant selon une direction correspondante aux nervures cylindriques.In order to achieve this goal, we propose according to the invention a traffic light comprising a housing closed by a front lens and wherein is mounted a support plate carrying electroluminescent diodes, a transparent collimation plate interposed between the light-emitting diodes and the lens front and having on a side facing the front lens of diffusion lenses comprising cylindrical ribs extending parallel to the to each other, and an anti-ghost mask interposed between the collimation plate and the front lens and having opaque segments delineating slots extending in a direction corresponding to the ribs cylindrical.

Ainsi, par une orientation appropriée des lentilles de diffusion et des fentes du masque anti-fantôme, on assure tout à la fois une bonne transmission du faisceau lumineux dans les directions recherchées et une élimination des reflets parasites dans ces mêmes directions ainsi qu'une diffusion homogène dans un plan perpendiculaire à la direction des nervures cylindriques tout en minimisant l'effet fantôme dans le plan où il est le plus gênant, c'est-à-dire dans un plan présentant une faible incidence avec le plan perpendiculaire aux nervures.Thus, by an appropriate orientation of the lenses of diffusion and slots of the anti-ghost mask, it ensures at the same time a good beam transmission bright in the desired directions and elimination parasitic reflections in these same directions as well as homogeneous diffusion in a perpendicular plane to the direction of the cylindrical ribs while minimizing the ghost effect in the plane where it is most disturbing, that is to say in a plane presenting a weak incidence with the plane perpendicular to the ribs.

Selon une version avantageuse de l'invention, la plaque de collimation comporte des lentilles de collimation sur une face tournée vers les diodes électroluminescentes.According to an advantageous version of the invention, the collimation plate features collimation lenses on one side facing the light-emitting diodes.

Ainsi, par une répartition des fonctions sur les deux faces de la plaque de collimation, il est possible de réaliser chaque fonction en utilisant des lentilles de forme simple, c'est-à-dire d'un faible coût de réalisation, et ayant un excellent rendement de transmission de sorte que le rendement de transmission global se trouve amélioré.Thus, by a distribution of functions on the two sides of the collimation plate, it is possible to perform each function using lenses of simple form, that is to say a low cost of implementation, and having excellent transmission efficiency of so that the overall transmission yield lies improved.

Selon un premier mode de réalisation de l'invention, les lentilles de collimation sont des lentilles de révolution individuelles asphériques disposées en regard des diodes électroluminescentes. Ainsi, le faisceau émis par les diodes électroluminescentes est immédiatement concentré selon un faisceau parallèle avec un rendement de transmission important.According to a first embodiment of the invention, collimation lenses are lenses of individual aspheric revolution arranged opposite electroluminescent diodes. Thus, the beam emitted by the light-emitting diodes is immediately concentrated in a parallel beam with a yield important transmission.

De préférence, dans ce mode de réalisation, des lentilles de collimation ont un axe de révolution décalé par rapport à un axe de révolution de la diode électroluminescente correspondante. On obtient ainsi un faisceau parallèle qui est dévié selon un angle correspondant à la distance entre les axes de révolution de sorte que la déviation recherchée est obtenue par une simple détermination de la distance de décalage entre les axes de révolution.Preferably, in this embodiment, Collimation lenses have an axis of revolution shifted with respect to an axis of revolution of the light-emitting diode corresponding. A beam is thus obtained parallel which is deflected at an angle corresponding to the distance between the axes of revolution so that the deviation sought is obtained by a simple determination the distance of shift between the axes of revolution.

Selon un second mode de réalisation de l'invention, la plaque de collimation présente un axe de symétrie et comporte des nervures de collimation circulaires centrées sur l'axe de symétrie, et les diodes électroluminescentes sont disposées selon une matrice au voisinage du foyer des nervures de collimation.According to a second embodiment of the invention, the collimation plate has an axis of symmetry and has circular collimation ribs centered on the axis of symmetry, and the light-emitting diodes are arranged in a matrix in the vicinity from the focus of the collimation veins.

BREVE DESCRIPTION DES DESSINSBRIEF DESCRIPTION OF THE DRAWINGS

D'autres caractéristiques et avantages de l'invention apparaítront à la lecture de la description qui suit d'un mode de réalisation préféré non limitatif de l'invention en relation avec les figures ci-jointes parmi lesquelles :

  • la figure 1 est une vue en perspective éclatée du feu de signalisation selon l'invention,
  • la figure 2 est une vue de face partielle de la plaque de collimation du côté tourné vers la lentille frontale,
  • la figure 3 est une vue en coupe agrandie d'une lentille de collimation et des lentilles de diffusion correspondantes selon la ligne III-III de la figure 2,
  • la figure 4 est une vue en coupe partielle agrandie du masque anti-fantôme selon la ligne IV-IV de la figure 1,
  • la figure 5 est une représentation schématique du feu selon l'invention illustrant le traitement dans un plan vertical du faisceau lumineux émis par une diode,
  • la figure 6 est une vue schématique analogue à celle de la figure 5 illustrant le traitement dans un plan horizontal du faisceau lumineux émis par une diode,
  • la figure 7 est une vue en coupe schématique par un plan vertical de la moitié supérieure d'un feu de signalisation selon un second mode de réalisation de l'invention,
  • la figure 8 est une vue de face partielle de la face de collimation de la plaque de collimation de la figure 7,
  • la figure 9 est une vue de détail agrandie de deux nervures de la partie centrale de la plaque de collimation de la figure 7,
  • la figure 10 est une vue de détail agrandie de deux nervures de la partie périphérique de la plaque de collimation de la figure 7,
  • la figure 11 est une vue en coupe de détail agrandie de la lentille frontale de la figure 7.
Other features and advantages of the invention will appear on reading the following description of a preferred non-limiting embodiment of the invention in relation to the attached figures among which:
  • FIG. 1 is an exploded perspective view of the signaling light according to the invention,
  • FIG. 2 is a partial front view of the collimation plate on the side facing the front lens,
  • FIG. 3 is an enlarged sectional view of a collimating lens and corresponding diffusion lenses along the line III-III of FIG. 2,
  • FIG. 4 is an enlarged partial sectional view of the anti-ghost mask along the line IV-IV of FIG. 1,
  • FIG. 5 is a schematic representation of the fire according to the invention illustrating the treatment in a vertical plane of the light beam emitted by a diode,
  • FIG. 6 is a schematic view similar to that of FIG. 5 illustrating the treatment in a horizontal plane of the light beam emitted by a diode,
  • FIG. 7 is a diagrammatic sectional view through a vertical plane of the upper half of a signaling light according to a second embodiment of the invention,
  • FIG. 8 is a partial front view of the collimation face of the collimation plate of FIG. 7,
  • FIG. 9 is an enlarged detail view of two ribs of the central part of the collimation plate of FIG. 7,
  • FIG. 10 is an enlarged detail view of two ribs of the peripheral portion of the collimation plate of FIG. 7,
  • Fig. 11 is an enlarged detail sectional view of the front lens of Fig. 7.

DESCRIPTION DETAILLEE DE L'INVENTIONDETAILED DESCRIPTION OF THE INVENTION

En référence aux figures 1 à 6, le feu de signalisation selon l'invention comporte de façon connue en soi un boítier 1 fermé par une lentille frontale 2 et contenant une plaque support 3 supportant des diodes électroluminescentes 4. De façon également connue en soi la plaque support 3 est de préférence un circuit imprimé relié à un organe de contrôle (non représenté) assurant un allumage et une extinction des diodes électroluminescentes 4.With reference to FIGS. 1 to 6, the traffic light according to the invention comprises in known manner in itself a housing 1 closed by a front lens 2 and containing a support plate 3 supporting diodes electroluminescent 4. Also known per se the support plate 3 is preferably a printed circuit connected to a control organ (not shown) ensuring switching on and off the light-emitting diodes 4.

Selon l'invention, le feu de signalisation comporte en outre une plaque de collimation 5. La plaque de collimation 5 a une face pourvue de lentilles de collimation 6 tournées vers les diodes électroluminescentes 4, et une face opposée pourvue de lentilles de diffusion 7.According to the invention, the traffic light comprises in addition a collimation plate 5. The plate of collimation 5 has a face provided with collimation lenses 6 turned towards light-emitting diodes 4, and an opposite face provided with diffusion lenses 7.

Dans le mode de réalisation préféré illustré, chaque lentille de collimation 6 correspond à une diode électroluminescente 4 et a une surface en forme de paraboloïde dont l'axe de révolution 8 est dans le même plan vertical que l'axe de révolution 9 de la diode électroluminescente 4 correspondante et s'étend parallèlement à celui-ci mais est décalé vers le bas d'une distance d1 (voir figures 5 et 6). Les lentilles de collimation 6 assurent ainsi non seulement une mise en parallèle du faisceau émis par la diode électroluminescente 4 mais également une déviation du faisceau parallèle vers le bas comme illustré sur la figure 5. Les lentilles de collimation 6 sont accolées les unes aux autres et présentent un contour hexagonal qui correspond à la disposition des diodes électroluminescentes 4 sur la plaque support 3. La face de la plaque de collimation 5 tournée vers les diodes électroluminescentes 4 ne comporte donc aucune arête saillante pouvant provoquer une diffusion parasite de la lumière émise par une source externe.In the preferred embodiment illustrated, each collimation lens 6 corresponds to a light-emitting diode 4 and has a paraboloid-shaped surface whose axis of revolution 8 is in the same vertical plane as the axis of revolution 9 of the diode. electroluminescent 4 corresponding and extends parallel thereto but is shifted down by a distance d 1 (see Figures 5 and 6). The collimation lenses 6 thus ensure not only a paralleling of the beam emitted by the light-emitting diode 4 but also a deflection of the parallel beam downwards as illustrated in FIG. 5. The collimating lenses 6 are contiguous to one another and have a hexagonal contour which corresponds to the arrangement of the light-emitting diodes 4 on the support plate 3. The face of the collimation plate 5 turned towards the light-emitting diodes 4 therefore has no protruding edge which can cause a parasitic diffusion of the light emitted by a external source.

Dans le mode de réalisation illustré, les lentilles de diffusion 7 sont constituées par des nervures cylindriques verticales ayant un contour de base en arc de cercle de sorte que le faisceau sortant de la plaque de collimation 5 reste un faisceau parallèle dans un plan vertical (figure 5) mais devient un faisceau convergent dans un plan horizontal (figure 6), ce faisceau devenant divergeant au-delà du foyer 10 des lentilles de diffusion 7. Pour une plus grande homogénéité du faisceau sortant, la plaque de collimation 5 comporte de préférence une multiplicité de lentilles de diffusion 7 pour une même lentille de collimation 6. On notera également que les nervures cylindriques 7 sont accolées les unes aux autres et s'étendent de façon continue sur toute la hauteur de la plaque de collimation 5 de sorte que sur la face de diffusion la plaque de collimation ne comporte pas non plus d'arête saillante risquant d'engendrer des diffusions parasites. In the illustrated embodiment, the lenses 7 are constituted by ribs vertical cylindrical having a basic arcuate contour of circle so that the beam coming out of the plate of collimation 5 remains a parallel beam in a plane vertical (Figure 5) but becomes a convergent beam in a horizontal plane (Figure 6), this beam becoming diverging beyond the focus of the diffusion lenses 7. For greater homogeneity of the outgoing beam, the collimation plate 5 preferably comprises a multiplicity of diffusion lenses 7 for the same collimation lens 6. It should also be noted that the cylindrical ribs 7 are contiguous to each other and extend continuously over the entire height of the collimation plate 5 so that on the face of diffusion the collimation plate does not involve no no more protruding edge that could cause broadcasts parasites.

La plaque de collimation 5 est de préférence réalisée par injection à partir d'une matière plastique transparente.The collimation plate 5 is preferably made by injection from a plastic material transparent.

Selon un autre aspect de l'invention le feu de signalisation comporte un masque anti-fantôme 11 disposé entre la plaque de collimation 5 et la lentille frontale 2. Dans le mode de réalisation illustré le masque anti-fantôme 11 est une plaque ajourée comportant une série d'ouvertures 12 correspondant chacune au faisceau sortant de la plaque de collimation 5 émis par une diode électroluminescente 4. L'écran anti-fantôme 11 est disposé parallèlement à la plaque de collimation 5 à une distance d2 de celle-ci correspondant à la distance des foyers 10 des lentilles de diffusion 7 (figure 6). Chaque ouverture 12 comporte une série de barreaux verticaux 13 ayant une section en forme de losange espacés les uns des autres pour délimiter des fentes verticales 14 ayant une largeur juste suffisante pour laisser passer les faisceaux convergents-divergents provenant des lentilles de diffusion 7 (figure 6).According to another aspect of the invention, the traffic light comprises an anti-ghost mask 11 disposed between the collimation plate 5 and the front lens 2. In the embodiment illustrated, the anti-ghost mask 11 is a perforated plate comprising a series of openings 12 each corresponding to the beam coming out of the collimation plate 5 emitted by a light-emitting diode 4. The anti-ghosting screen 11 is arranged parallel to the collimation plate 5 at a distance d 2 from it corresponding to the distance of the foci 10 from the diffusion lenses 7 (FIG. 6). Each opening 12 has a series of vertical bars 13 having a diamond-shaped section spaced from one another to define vertical slots 14 having a width just sufficient to allow the convergent-divergent beams from the diffusion lenses 7 to pass (FIG. ).

De préférence, la distance entre les lentilles de diffusion cylindrique 7 et les lentilles de collimation 6 est adaptée pour qu'un faisceau parasite qui parviendrait à traverser les lentilles de diffusion 7 et à se réfléchir sur les lentilles de collimation 6 ne puisse pas se focaliser dans les fentes 14 du masque anti-fantôme. L'effet fantôme est donc encore réduit par cette disposition.Preferably, the distance between the lenses of Cylindrical Diffusion 7 and Collimation Lenses 6 is adapted so that a parasitic beam that would reach to cross the diffusing lenses 7 and to reflect on collimation lenses 6 can not get focus in the slots 14 of the anti-ghost mask. The ghost effect is therefore further reduced by this arrangement.

Le masque anti-fantôme 11 peut être réalisé par injection à partir d'une matière plastique opaque, de préférence une matière noire de sorte que le feu apparaít noir à un usager lorsque les diodes électroluminescentes 4 sont éteintes. On notera à ce propos que la lentille frontale 2 du feu de signalisation selon l'invention peut être transparente claire, c'est-à-dire non teintée, sans augmenter le risque d'un effet fantôme. Le rendement de transmission est donc augmenté par rapport aux feux de signalisation qui utilisent une lentille frontale teintée pour obtenir des réflexions réduisant l'effet fantôme. De préférence, la lentille frontale 2 comporte quelques nervures 15 pour assurer une diffusion selon des orientations qui ne seraient pas atteintes par le faisceau diffusé par les lentilles de diffusion 7. Le nombre de nervures 15 est toutefois très inférieur au nombre de nervures habituellement nécessaires pour assurer une diffusion satisfaisante dans les feux de signalisation traditionnels.The anti-ghost mask 11 can be made by injection from an opaque plastic material, preferably a dark matter so that the fire appears black to a user when light-emitting diodes 4 are off. It should be noted in this connection that the lens 2 of the traffic light according to the invention can to be transparent clear, that is to say untinted, without increase the risk of a ghost effect. The yield of transmission is therefore increased compared to signaling that use a tinted front lens to obtain reflections reducing the ghost effect. Of preferably, the front lens 2 has some ribs 15 to ensure dissemination according to guidelines which would not be reached by the scattered beam by the diffusion lenses 7. The number of ribs 15 is however much smaller than the number of ribs usually necessary to ensure dissemination satisfactory in traditional traffic lights.

Selon un second mode de réalisation de l'invention illustré par les figures 7 à 9, le feu de signalisation comporte comme précédemment une lentille frontale 102 derrière laquelle s'étend un masque anti-fantôme 111 auquel est accolée une plaque de collimation 105 dont la face arrière est illuminée par une matrice de diodes 104. Comme précédemment la plaque de collimation 105 a une face avant comportant des nervures cylindriques 107 s'étendant verticalement. Dans ce mode de réalisation, le masque anti-fantôme 111 se présente sous forme d'une grille comportant des barreaux verticaux délimitant des fentes verticales. Comme précédemment, le masque anti-fantôme 111 est de préférence disposé à une distance de la plaque de collimation correspondant à un plan des foyers des lentilles de diffusion 107.According to a second embodiment of the invention illustrated by Figures 7 to 9, the traffic light has as before a front lens 102 behind which extends an anti-ghost mask 111 which is attached a collimation plate 105 whose rear face is illuminated by a matrix of diodes 104. As before, the collimation plate 105 has a front face with cylindrical ribs 107 extending vertically. In this embodiment, the anti-ghost mask 111 is in the form of a grid comprising vertical bars delimiting vertical slits. As before, the anti-ghost mask 111 is preferably disposed at a distance of the collimation plate corresponding to a plane of focal points of diffusion lenses 107.

Contrairement au premier mode de réalisation, la face arrière de la plaque de collimation 105 comporte des nervures de collimation circulaires centrées sur l'axe de symétrie de la plaque de collimation. Les nervures de collimation comportent un premier groupe 100 de nervures 101 dans la partie centrale de la plaque de collimation et un second groupe 103 de nervures 106 dans la partie périphérique de la plaque de collimation. Unlike the first embodiment, the rear face of the collimation plate 105 has circular collimation ribs centered on the axis of symmetry of the collimation plate. The ribs of collimation comprise a first group 100 of ribs 101 in the central part of the collimation plate and a second group 103 of ribs 106 in the part peripheral of the collimation plate.

Dans ce mode de réalisation, les diodes électroluminescentes 104 sont groupées selon une matrice de faibles dimensions, par exemple selon une matrice carrée ayant une dimension de 50 mm pour un feu de signalisation ayant un diamètre de 300 mm, qui est disposée au voisinage du foyer des nervures de collimation, l'axe de symétrie 115 de la matrice de diodes électroluminescentes 104 étant décalé vers le haut d'une distance d3 par rapport à l'axe de symétrie 116 de la plaque de collimation 105 afin d'assurer une déviation du faisceau lumineux sortant de la lentille de collimation.In this embodiment, the light-emitting diodes 104 are grouped according to a matrix of weak dimensions, for example according to a square matrix having a dimension of 50 mm for a traffic light having a diameter of 300 mm, which is arranged in the vicinity of the focus of the collimation veins, the axis of symmetry 115 of the matrix of light-emitting diodes 104 being shifted upwards by a distance d3 from the axis of symmetry 116 of the collimation plate 105 to ensure a deviation of the outgoing light beam of the collimation lens.

Comme illustré par la figure 9, les nervures 101 de la partie centrale 100 de la plaque de collimation 105 comportent une face cylindrique 108 qui s'étend parallèlement à l'axe de symétrie 116 de la plaque de collimation et une face conique 109 présentant par rapport aux rayons incidents émis par les diodes électroluminescentes 104 un angle permettant une réfraction de ces rayons incidents pour que les rayons réfractés forment un faisceau sensiblement parallèle à l'axe de symétrie 116 de la plaque de collimation en ce qui concerne la diode située au foyer, et incliné vers le bas pour les diodes au-dessus du foyer. On notera sur cette figure que les rayons incidents frappant les faces 108 produisent des rayons réfractés qui sont des rayons perdus, les nervures 101 seront donc prévues pour avoir une face 108 de faible dimension par rapport à la face 109.As illustrated in FIG. 9, the ribs 101 of the central portion 100 of the collimation plate 105 have a cylindrical face 108 which extends in parallel to the axis of symmetry 116 of the collimation plate and a conical face 109 presenting with respect to incident rays emitted by light-emitting diodes 104 an angle allowing refraction of these incident rays for the refracted rays to form a beam substantially parallel to the axis of symmetry 116 of the plate of collimation with regard to the diode located at focus, and tilted down for the diodes above fireplace. Note in this figure that the incident rays striking the faces 108 produce refracted rays which are lost rays, the ribs 101 will be so expected to have a small face 108 compared to the face 109.

En référence à la figure 10, les nervures 106 de la partie périphérique 103 comportent une face cylindrique 112 parallèle à l'axe de symétrie de collimation et une face conique 113 inclinée selon un angle égal ou légèrement plus faible que l'angle d'incidence des rayons émis par les diodes électroluminescentes 104 vers cette partie de la plaque de collimation. Comme illustré par la figure 10, les rayons incidents subissent alors une réfraction au moment de la traversée de la face 112 et une réflexion sur la face 113 pour former également un faisceau de rayons réfléchis s'étendant parallèlement à l'axe de symétrie 116 de la plaque de collimation en ce qui concerne la diode située au foyer, et inclinés vers le bas pour les diodes au-dessus du foyer.With reference to FIG. 10, the ribs 106 of the peripheral portion 103 comprise a cylindrical face 112 parallel to the symmetry axis of collimation and a conical face 113 inclined at an equal or slight angle lower than the angle of incidence of the rays emitted by the light-emitting diodes 104 to this part of the collimation plate. As illustrated by figure 10, the incident rays then undergo a refraction at the time of crossing the face 112 and a reflection on the face 113 to also form a beam of reflected rays extending parallel to the axis of symmetry 116 of the collimation plate with respect to the diode located at the focus, and inclined towards the low for the diodes above the fireplace.

Afin d'uniformiser le diagramme d'intensité du faisceau sortant du feu de signalisation, la face de la lentille frontale 102 tournée vers la plaque de collimation 105 comporte des rainures horizontales 114 en forme de portion de cylindre concave. Dans le mode de réalisation illustré où l'on souhaite augmenter la déviation vers le bas d'au moins une partie du faisceau, les rainures 114 sont réalisées pour que la surface de la partie supérieure des rainures 114 soit sensiblement verticale tandis que la surface de la partie inférieure des rainures 114 présente un angle plus prononcé par rapport à un plan vertical. On peut également prévoir des rainures 114 présentant des inclinaisons diverses en fonction de la partie de la lentille frontale dans laquelle elles s'étendent.In order to standardize the intensity diagram of the beam coming out of the traffic light, the face of the front lens 102 facing the collimation plate 105 has horizontal grooves 114 shaped of concave cylinder portion. In the embodiment illustrated where we want to increase the deviation down at least a portion of the beam, the grooves 114 are made so that the surface of the part upper grooves 114 is substantially vertical while the surface of the lower part of the grooves 114 has a more pronounced angle with respect to a vertical plane. It is also possible to provide grooves 114 with different inclinations depending on the part of the frontal lens in which they extend.

Bien entendu, l'invention n'est pas limitée au mode de réalisation préféré décrit et est susceptible de variantes de réalisation sans sortir du cadre de l'invention tel que défini par les revendications.Of course, the invention is not limited to preferred embodiment described and is likely to variants without departing from the scope of the invention as defined by the claims.

En particulier, bien que le masque ait été illustré sous forme d'une plaque opaque ajourée, il peut également être réalisé sous forme d'une plaque transparente sur laquelle les fentes 14 sont délimitées par des bandes opaques imprimées par sérigraphie, ou sous forme d'une plaque métallique usinée ou gravée. On peut en outre minimiser encore l'effet fantôme en ajoutant des reliefs réfléchissants sur la face du masque 11 tournée vers la lentille frontale 2.In particular, although the mask has been illustrated in the form of a perforated opaque plate, it can also be made in the form of a transparent plate on which the slots 14 are delimited by strips opaque printed by screen printing, or in the form of a machined or engraved metal plate. We can further minimize still the ghost effect by adding reliefs reflective on the face of the mask 11 facing the front lens 2.

Bien que les lentilles de diffusion aient été décrites sous forme de nervures cylindriques, elles peuvent être réalisées selon des lentilles ponctuelles disposées selon des rangées auxquelles correspondent les fentes du masque anti-fantôme.Although the lenses have been described in the form of cylindrical ribs, they can to be made according to point lenses arranged according to rows to which correspond the slots of the anti-ghost mask.

Bien que les nervures cylindriques 7 aient été décrites avec un contour de base en arc de cercle, on peut prévoir des formes différentes en vue d'obtenir une diffusion particulière des faisceaux lumineux.Although the cylindrical ribs 7 have been described with a basic outline in an arc, one may provide for different forms in order to obtain a special diffusion of light beams.

Bien que les lentilles de collimation aient été décrites avec une forme parabolique qui assure un rendement de transmission optimum, on peut réaliser des lentilles de collimation ayant une forme asphérique voire même une forme sphérique sans sortir du cadre de l'invention. Bien que la déviation vers le bas soit obtenue avec un rendement optimum avec un axe de la lentille de collimation parallèle à l'axe de la diode correspondante, on peut également obtenir une déviation en inclinant l'axe de la lentille de collimation mais le rendement de transmission est réduit.Although collimation lenses have been described with a parabolic shape that ensures a performance optimum transmission, lenses can be made of collimation having an aspheric form even a spherical shape without departing from the scope of the invention. Although the downward deviation is achieved with optimum performance with an axis of the collimation lens parallel to the axis of the corresponding diode, one can also get a deviation by tilting the axis of the collimation lens but the transmission efficiency is reduced.

Bien que l'invention ait été décrite avec une déviation du faisceau parallèle dans un plan vertical suivie d'une diffusion dans un plan horizontal, ces directions ne sont pas limitatives et peuvent être adaptées aux conditions d'utilisation de chaque feu afin de privilégier un angle d'observation du feu.Although the invention has been described with a deviation of the parallel beam in a vertical plane followed of a diffusion in a horizontal plane, these directions are not limiting and can be adapted the conditions of use of each fire to favor an angle of observation of the fire.

Claims (15)

Feu de signalisation comportant un boítier (1) fermé par une lentille frontale (2 ; 102) et dans lequel est montée une plaque support (3) portant des diodes électroluminescentes (4 ; 104), caractérisé en ce qu'il comporte une plaque de collimation (5 ; 105) transparente interposée entre les diodes électroluminescentes (4 ; 104) et la lentille frontale (2 ; 102) et comportant sur une face tournée vers la lentille frontale (2 ; 102) des lentilles de diffusion (7 ; 107) comprenant des nervures cylindriques (7) s'étendant parallèlement les unes aux autres, et un masque anti-fantôme (11 ; 111) interposé entre la plaque de collimation et la lentille frontale et comportant des segments opaques (13) délimitant des fentes (14) s'étendant selon une direction correspondante aux nervures cylindriques (7 ; 107).Signaling lamp comprising a housing (1) closed by a front lens (2; 102) and in which is mounted a support plate (3) carrying light-emitting diodes (4; 104), characterized in that it comprises a plate of transparent collimation (5; 105) interposed between the light-emitting diodes (4; 104) and the front lens (2; 102) and having on one face facing the front lens (2; 102) diffusion lenses (7; 107) comprising cylindrical ribs (7) extending parallel to each other, and an anti-ghost mask (11; 111) interposed between the collimation plate and the front lens and having opaque segments (13) defining slots (14). ) extending in a corresponding direction to the cylindrical ribs (7; 107). Feu de signalisation selon la revendication 1, caractérisé en ce que les fentes du masque anti-fantôme s'étendent selon une direction verticale.Signaling light according to claim 1, characterized in that the slots of the anti-ghost mask extend in a vertical direction. Feu de signalisation selon la revendication 1, caractérisé en ce que les nervures cylindriques (7 ; 107) ont un contour de base en arc de cercle.Signaling light according to claim 1, characterized in that the cylindrical ribs (7; 107) have a basic contour in a circular arc. Feu de signalisation selon la revendication 1, caractérisé en ce que les fentes (14) du masque s'étendent parallèlement aux nervures cylindriques (7 ; 107).Signaling light according to claim 1, characterized in that the slots (14) of the mask extend parallel to the cylindrical ribs (7; 107). Feu de signalisation selon la revendication 1, caractérisé en ce que le masque (11; 111) est disposé à une distance (d2) de la plaque de collimation correspondant à un plan de foyers (10) des lentilles de diffusion (7 ; 107).Signaling light according to claim 1, characterized in that the mask (11; 111) is arranged at a distance (d2) from the collimation plate corresponding to a focal plane (10) of the diffusion lenses (7; 107). . Feu de signalisation selon la revendication 5, caractérisé en ce que le masque (11; 111) comporte des barreaux (13) ayant une section en forme de losange. Signaling light according to claim 5, characterized in that the mask (11; 111) comprises bars (13) having a diamond-shaped section. Feu de signalisation selon la revendication 1, caractérisé en ce que les fentes (14) sont délimitées par des ouvertures (12) correspondant chacune à un faisceau issu d'une diode électroluminescente (4).Signaling light according to claim 1, characterized in that the slots (14) are delimited by openings (12) each corresponding to a beam from a light-emitting diode (4). Feu de signalisation selon la revendication 1, caractérisé en ce que la plaque de collimation (5) comporte des lentilles de collimation (6 ; 101, 106) sur une face tournée vers les diodes électroluminescentes.Signaling light according to claim 1, characterized in that the collimation plate (5) has collimating lenses (6; 101,106) on one side facing the light-emitting diodes. Feu de signalisation selon la revendication 8, caractérisé en ce que les lentilles de collimation (6) sont des lentilles de révolution individuelles asphériques disposées en regard des diodes électroluminescentes (4).Signaling light according to claim 8, characterized in that the collimation lenses (6) are individual aspheric revolution lenses arranged opposite the light-emitting diodes (4). Feu de signalisation selon la revendication 9, caractérisé en ce que les lentilles de collimation (6) ont un axe de révolution (8) décalé par rapport à un axe de révolution (9) de la diode électroluminescente (4) correspondante.Signaling light according to claim 9, characterized in that the collimation lenses (6) have an axis of revolution (8) offset with respect to an axis of revolution (9) of the corresponding light-emitting diode (4). Feu de signalisation selon la revendication 8, caractérisé en ce que les lentilles de collimation (6) sont accolées les unes aux autres.Signaling light according to claim 8, characterized in that the collimation lenses (6) are contiguous to each other. Feu de signalisation selon la revendication 8, caractérisé en ce que les lentilles de diffusion (7) sont séparées des lentilles de collimation (6) d'une distance adaptée pour qu'un faisceau parasite entrant qui parviendrait à traverser les lentilles de diffusion (7; 107) et à se réfléchir sur les lentilles de collimation (6 ; 101, 106) ne puisse pas se focaliser sur les fentes (14) du masque anti-fantôme (11).Signaling light according to claim 8, characterized in that the diffusion lenses (7) are separated from the collimating lenses (6) by a suitable distance for an incoming parasitic beam to pass through the diffusion lenses (7). 107) and reflecting on the collimating lenses (6; 101,106) can not focus on the slots (14) of the anti-ghost mask (11). Feu de signalisation selon la revendication 1, caractérisé en ce que la plaque de collimation (105) présente un axe de symétrie (116) et comporte des nervures de collimation circulaires (101, 106) centrées sur l'axe de symétrie (116), et en ce que les diodes électroluminescentes (104) sont disposées selon une matrice au voisinage du foyer des nervures de collimation (101, 106).Signaling light according to claim 1, characterized in that the collimation plate (105) has an axis of symmetry (116) and comprises circular collimation ribs (101, 106) centered on the axis of symmetry (116), and in that the light-emitting diodes (104) are arranged in a matrix near the focus of the collimation ribs (101, 106). Feu de signalisation selon la revendication 13, caractérisé en ce que dans une partie centrale (100) de la plaque de collimation, les nervures de collimation (101) sont simplement réfractives tandis que dans une partie périphérique (103) les nervures de collimation (106) sont réfractives et réfléchissantes.Signaling light according to claim 13, characterized in that in a central part (100) of the collimation plate, the collimation ribs (101) are simply refractive while in a peripheral part (103) the collimation ribs (106) ) are refractive and reflective. Feu de signalisation selon la revendication 13, caractérisé en ce que la lentille frontale (102) comporte des rainures (114) parallèles entre elles et ayant une face en forme de portion de cylindre concave sur une face de la lentille frontale (102) tournée vers la plaque de collimation (105).Signaling light according to claim 13, characterized in that the front lens (102) has grooves (114) parallel to each other and having a concave cylinder portion-shaped face on one side of the front lens (102) facing the collimation plate (105).
EP04292932A 2003-12-10 2004-12-09 Light for signalling comprising electroluminescent diodes Not-in-force EP1541920B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0314456 2003-12-10
FR0314456A FR2863686B1 (en) 2003-12-10 2003-12-10 LED LIGHT EMITTING SIGNAL LIGHT

Publications (2)

Publication Number Publication Date
EP1541920A1 true EP1541920A1 (en) 2005-06-15
EP1541920B1 EP1541920B1 (en) 2007-02-21

Family

ID=34508630

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04292932A Not-in-force EP1541920B1 (en) 2003-12-10 2004-12-09 Light for signalling comprising electroluminescent diodes

Country Status (4)

Country Link
EP (1) EP1541920B1 (en)
AT (1) ATE354765T1 (en)
DE (1) DE602004004862T2 (en)
FR (1) FR2863686B1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1696171A1 (en) * 2005-02-28 2006-08-30 Osram Opto Semiconductors GmbH LED display device
FR2888796A1 (en) * 2005-07-25 2007-01-26 Peugeot Citroen Automobiles Sa Signal lamp for motor vehicle, has light source with focusing unit to focus luminous flux emitted by source, and screen with optical unit distributing and transmitting flux towards outside, where shutter is placed in front of source
EP1762777A3 (en) * 2005-09-08 2007-08-01 Hella KG Hueck & Co. Vehicule lighting unit
FR2905321A1 (en) * 2006-09-06 2008-03-07 Peugeot Citroen Automobiles Sa Lighting device e.g. stoplight, for signaling motor vehicle, has disk shaped mask, whose hour-glass shaped holes traverse mask and permits passage of light rays issued from light source, where holes have same dimensions
NL2000916C2 (en) * 2007-10-10 2009-04-14 Innovative & Superior Technology Inc LED light source module, has LEDs with scattering film and convex lens attached to mounting base, where light emitted by LEDs is scattered by scattering film and is focused through lens
WO2011039005A1 (en) * 2009-09-30 2011-04-07 Osram Opto Semiconductors Gmbh Led traffic signal
ITFI20130290A1 (en) * 2013-11-29 2015-05-30 Iguzzini Illuminazione DEVICE FOR SHAPING LUMINOUS BEAMS EMITTED BY LIGHTING EQUIPMENT.
WO2019158890A1 (en) * 2018-02-19 2019-08-22 Automotive Lighting Rear Lamps France Signaling device for a motor vehicle, comprising an opaque screen that can be penetrated by a greater amount of light emitted by a light source concealed behind said screen
FR3078139A1 (en) * 2018-02-19 2019-08-23 Automotive Lighting Rear Lamps France SIGNALING DEVICE FOR A MOTOR VEHICLE COMPRISING AN OPAQUE SCREEN FOR PASSING A LARGER AMOUNT OF LIGHT EMITTED BY A DISSIMULATED LIGHT SOURCE BEHIND THE SCREEN

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK2550649T3 (en) * 2010-03-24 2014-06-30 Siemens Ag OPTICAL VIEWING ELEMENT AND VIEWING DEVICE
DE102015109816A1 (en) * 2015-06-19 2016-12-22 Hella Kgaa Hueck & Co. Lighting device for vehicles

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0081361A1 (en) * 1981-12-08 1983-06-15 LUCAS INDUSTRIES public limited company Lamp
GB2194321A (en) * 1986-07-24 1988-03-02 George Howard Lloyd Lens system
EP0523927A2 (en) * 1991-07-17 1993-01-20 Precision Solar Controls Inc LED lamp including refractive lens element
US5636057A (en) * 1995-02-10 1997-06-03 Ecolux Inc. Prismatic toroidal lens and traffic signal light using this lens

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0081361A1 (en) * 1981-12-08 1983-06-15 LUCAS INDUSTRIES public limited company Lamp
GB2194321A (en) * 1986-07-24 1988-03-02 George Howard Lloyd Lens system
EP0523927A2 (en) * 1991-07-17 1993-01-20 Precision Solar Controls Inc LED lamp including refractive lens element
US5636057A (en) * 1995-02-10 1997-06-03 Ecolux Inc. Prismatic toroidal lens and traffic signal light using this lens

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1696171A1 (en) * 2005-02-28 2006-08-30 Osram Opto Semiconductors GmbH LED display device
FR2888796A1 (en) * 2005-07-25 2007-01-26 Peugeot Citroen Automobiles Sa Signal lamp for motor vehicle, has light source with focusing unit to focus luminous flux emitted by source, and screen with optical unit distributing and transmitting flux towards outside, where shutter is placed in front of source
EP1762777A3 (en) * 2005-09-08 2007-08-01 Hella KG Hueck & Co. Vehicule lighting unit
FR2905321A1 (en) * 2006-09-06 2008-03-07 Peugeot Citroen Automobiles Sa Lighting device e.g. stoplight, for signaling motor vehicle, has disk shaped mask, whose hour-glass shaped holes traverse mask and permits passage of light rays issued from light source, where holes have same dimensions
NL2000916C2 (en) * 2007-10-10 2009-04-14 Innovative & Superior Technology Inc LED light source module, has LEDs with scattering film and convex lens attached to mounting base, where light emitted by LEDs is scattered by scattering film and is focused through lens
WO2011039005A1 (en) * 2009-09-30 2011-04-07 Osram Opto Semiconductors Gmbh Led traffic signal
ITFI20130290A1 (en) * 2013-11-29 2015-05-30 Iguzzini Illuminazione DEVICE FOR SHAPING LUMINOUS BEAMS EMITTED BY LIGHTING EQUIPMENT.
WO2015079405A1 (en) * 2013-11-29 2015-06-04 Iguzzini Illuminazione S.P.A. Device for shaping light beams emitted by lighting fixtures
US10337698B2 (en) 2013-11-29 2019-07-02 Iguzzini Illuminazione S.P.A. Device for shaping light beams emitted by lighting fixtures
WO2019158890A1 (en) * 2018-02-19 2019-08-22 Automotive Lighting Rear Lamps France Signaling device for a motor vehicle, comprising an opaque screen that can be penetrated by a greater amount of light emitted by a light source concealed behind said screen
FR3078139A1 (en) * 2018-02-19 2019-08-23 Automotive Lighting Rear Lamps France SIGNALING DEVICE FOR A MOTOR VEHICLE COMPRISING AN OPAQUE SCREEN FOR PASSING A LARGER AMOUNT OF LIGHT EMITTED BY A DISSIMULATED LIGHT SOURCE BEHIND THE SCREEN
US11415292B2 (en) 2018-02-19 2022-08-16 Marelli Automotive Lighting France Signaling device for a motor vehicle

Also Published As

Publication number Publication date
FR2863686B1 (en) 2006-02-24
FR2863686A1 (en) 2005-06-17
DE602004004862D1 (en) 2007-04-05
DE602004004862T2 (en) 2007-11-15
EP1541920B1 (en) 2007-02-21
ATE354765T1 (en) 2007-03-15

Similar Documents

Publication Publication Date Title
EP1338844B1 (en) Signal lamp for vehicle comprising an optical element which performs autonomously a signal function
FR2858045A1 (en) Lamp unit for vehicle headlight, has stopper unit whose upper edge is placed at proximity of optical axis such that lower part of light emitted by light emitting diode is stopped
FR2828727A1 (en) VEHICLE LAMP HAVING PHOTOEMISSIVE DIODES
FR2829831A1 (en) VEHICLE LAMP WITH PHOTOEMISSIVE DIODES
FR2844031A1 (en) Motor vehicle headlamp using light-emitting diodes, uses multiple lamp units containing one or more light-emitting diodes, and arranges units to produce intense illumination in one zone and diffused illumination in surrounding zone
FR2888918A1 (en) VEHICLE HEADLIGHT
EP1541920B1 (en) Light for signalling comprising electroluminescent diodes
FR3093789A1 (en) LUMINOUS DEVICE IMAGING THE LIT SURFACES OF AT LEAST TWO MANIFOLDS
EP3267096B1 (en) Lighting and/or signalling device for a motor vehicle
WO2023031341A1 (en) Light device for a motor vehicle
FR2938046A1 (en) PHOTOEMETER DEVICE AND LIGHTING INSTALLATION OF A VEHICLE EQUIPPED WITH SUCH A DEVICE
EP4176201B1 (en) Optical assembly for a projector and projector comprising said optical assembly.
FR2522391A1 (en) IMPROVEMENTS IN LIGHT-EMITTING DEVICES FOR MOTOR VEHICLES
WO2021084138A1 (en) Display module for a motor vehicle
FR2507741A1 (en) Flux collector for automotive headlamp unit - uses surface of revolution around lamp having prismatic elements forming inner and outer surfaces
EP3124853A1 (en) Lighting and/or signalling device for a vehicle
FR3101391A1 (en) Optical system
EP3535159B1 (en) Motor vehicle signal light
EP1496304B1 (en) Signal lamp for vehicle
EP4090555B1 (en) Lighting device for motor vehicle incorporating a screen
EP1201500A1 (en) Lighting or signalling device for vehicle
EP0635674B1 (en) Vehicle lamp for signalling comprising a cover lens and an intermediate lens plate
FR3107750A1 (en) Motor vehicle light module comprising an electrochromic device
EP0648321B1 (en) Light diffusion member associated with a light source comprising a series of individual elements
WO2022269094A1 (en) Optical module for a light-emitting system for a motor vehicle

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR LV MK YU

17P Request for examination filed

Effective date: 20051125

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SAGEM COMMUNICATION

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070221

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070221

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070221

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070221

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070221

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070221

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20070313

REF Corresponds to:

Ref document number: 602004004862

Country of ref document: DE

Date of ref document: 20070405

Kind code of ref document: P

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070521

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070522

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070601

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070621

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070723

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070221

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070221

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070221

26N No opposition filed

Effective date: 20071122

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070522

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070221

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

Free format text: REGISTERED BETWEEN 20090326 AND 20090401

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070221

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20071209

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070221

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20070822

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20081231

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20081231

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IE

Payment date: 20091125

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20091125

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20091126

Year of fee payment: 6

Ref country code: DE

Payment date: 20091204

Year of fee payment: 6

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

BERE Be: lapsed

Owner name: SAGEM COMMUNICATIONS

Effective date: 20101231

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20101209

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101209

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101209

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110701

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602004004862

Country of ref document: DE

Effective date: 20110701

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20150908

Year of fee payment: 12

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20170831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170102