WO2021001616A1 - Luminous signalling device for a vehicle - Google Patents

Luminous signalling device for a vehicle Download PDF

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Publication number
WO2021001616A1
WO2021001616A1 PCT/FR2020/051125 FR2020051125W WO2021001616A1 WO 2021001616 A1 WO2021001616 A1 WO 2021001616A1 FR 2020051125 W FR2020051125 W FR 2020051125W WO 2021001616 A1 WO2021001616 A1 WO 2021001616A1
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WO
WIPO (PCT)
Prior art keywords
light
elu
pgl
dis
ice
Prior art date
Application number
PCT/FR2020/051125
Other languages
French (fr)
Inventor
Jean Francois DOAN
Philippe POILANE
Nathalie Larribeau
Pierre Mazerolle
Damien SCHNURIGER
Fabrice Sagorin
Mathieu Collot
Cédric SERMONAT
Sylvain Guillemette
Vincent Meesemaecker
Original Assignee
Psa Automobiles Sa
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 Psa Automobiles Sa filed Critical Psa Automobiles Sa
Priority to EP20747052.7A priority Critical patent/EP3994389B1/en
Priority to CN202080048940.1A priority patent/CN114072614B/en
Publication of WO2021001616A1 publication Critical patent/WO2021001616A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/27—Attachment thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—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
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/24—Light guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/28—Cover glass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/50—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
    • 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
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/242—Light guides characterised by the emission area
    • F21S43/245—Light guides characterised by the emission area emitting light from one or more of its major surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/249—Light guides with two or more light sources being coupled into the light guide
    • 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
    • F21S43/50—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
    • 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
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • 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
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles

Definitions

  • the invention relates, in general, to light signaling devices, intended more particularly for motor vehicles, comprising a light signaling function which is performed by scattering the light emitted by a light source via a light guide of the flat type or other type of light element.
  • a light signaling device is arranged at the front or at the rear of a motor vehicle in order to signal the position of the vehicle to other road users.
  • a light curtain is a rather thin light guide that is used to diffuse light over its largest area (not one side or one edge).
  • the guide has either an opaline appearance, or optical microphones on the surface or in the material which reflect the light perpendicularly to the surface of the guide, which creates a so-called “light curtain” effect.
  • a DIS signaling device comprising a BOI box, open towards the front,
  • a transparent closing wall designated by the term "glass" GLA in the remainder of the description, adapted to cooperate with said BOI box, a flat ELU light guide, suitable to fit into said BOI box and a plurality of light sources (not shown), adapted to fit into the BOI box, so as to inject light into the flat ELU light guide allowing light to be diffused.
  • the ELU flat light guide is adapted to fit inside the DIS housing, upstream of the GLA lens, so as to maintain an empty space between said ELU flat light guide and said GLA lens.
  • Such an empty space designated JEF functional set, is necessary for the circulation of air in order to avoid any condensation inside the BOI box and particularly on the inside face of the glass, as this condensation would be visible.
  • Figures 2 and 3 illustrate rear light signaling devices of the state of the art, using a screen, or a light curtain, as optical element ULS, arranged between the SOL light source and the GLA glass closing the BOL light box
  • a screen or a light curtain are said to be opaline (that is to say, not completely transparent and not completely opaque) and are able to diffuse light over their entire visible surface. This type of light element is then designated by “diffusing optical elements”.
  • the GLA lens and the ELU light element are several parts that must be assembled with a positioning constraint relative to each other, which represents an additional cost compared to a single part.
  • the JEF offset between the outer surface of the GLA lens and the ELU luminous element can, in the case of a complex shaped lens with significant relief, generate a visual inconsistency between the two (visual deformations by refraction).
  • the invention therefore aims to overcome these drawbacks by providing a light signaling device in which the glass and the light element form a single piece which, in addition to the reduction in cost, simplifies assembly and avoids visual inconsistencies. .
  • the currently necessary clearance between the glass and the light element, to prevent condensation, has been eliminated.
  • the present invention proposes a light signaling device for a vehicle, in particular for a motor vehicle, said device comprising:
  • the device is characterized in that the luminous element is molded onto a part of the lens to form a single-piece optical element: the portion of mirror corresponding to the outer face of the one-piece optical element and the light element covering the inner face of the lens part, corresponding to the inner face of the one-piece optical element.
  • the one-piece optical element defines a hollow body obtained after two-material injection molding: a first type of material constituting the ice part and a second identical or different material constituting the luminous element; said hollow body forming an outward protrusion from the rest of the glass wall closing the housing.
  • the luminous element is split into two parts obtained from the same injection molding process of the same second type of material; each part of the luminous element defining the inner face of the hollow body except the bottom of the hollow body which defines an exit window for the light.
  • the light exit window supports a diffraction grating on its inner face.
  • the ice portion has a general "U" shape, the first and second branches of which widen from the bottom of the hollow body to the rest of the ice wall; the luminous element covering the inner face of the ice part also respectively having a general shape of "U", the first and second branches of which respectively cover the first and second branches of the ice part.
  • the ends of the first and second branches of the ice portion are connected respectively to the rest of the ice wall having a substantially uniform surface, by substantially flat parts.
  • the interior surfaces of the substantially flat parts of the ice wall are covered with a third type of material opaque to light obtained from the same injection molding process and defining parts of glass opaque to light. .
  • At least one light source is arranged to diffuse the light in the edges of the first and second branches of the luminous element used as a light guide or to illuminate the rear face (s) of the luminous element. used as an opaline screen.
  • At least one light source is arranged opposite each edge of the first and second branches of the light element to illuminate each of the first and second branches of the light element and in which at least a third light source is arranged opposite the light exit window of the part of glass.
  • the second object of the invention is a motor vehicle comprising at least one light signaling device as described above.
  • the invention also relates to a vehicle comprising a light signaling device according to the invention.
  • FIG. 1 Figure 1, already described, a diagram of a lighting and / or light signaling device according to the prior art
  • FIG. 2 Figure 2, already described, a second signaling device according to the prior art
  • FIG. 4 a sectional view along the XY plane of an optical element of a signaling device, showing the impact of the JEF functional clearance on ice with high relief.
  • FIG. 5 a sectional view along the XY plane of a first embodiment of a one-piece optical element of a light signaling device according to the invention
  • FIG. 6 a sectional view along the XY plane of a second embodiment of a one-piece optical element of a light signaling device according to the invention
  • FIG. 7 a sectional view along the XY plane of a first arrangement of light source (s) and of a one-piece optical element of a light signaling device according to the invention
  • FIG. 8 a sectional view along the XY plane of a second arrangement of light source (s) and of a one-piece optical element of a light signaling device according to the invention.
  • FIG. 9 a view in section along the XY plane of a third arrangement of light source (s) and of a single-piece optical element of a light signaling device according to the invention.
  • front arrangement will denote an arrangement oriented towards the outside of the signaling device when it is considered mounted on the vehicle.
  • Figure 4 illustrates, in a sectional view in the XY plane of the XYZ frame of reference, a detail of the assembly of a part of PGL ice and of an ELU luminous element for a GLA glass with high relief.
  • the profile of the PGL ice part forms a PRO protuberance which is imposed by the style.
  • GLA lens of complex shape with significant reliefs (protuberances): difference in shape between the exterior lens and the internal elements (light) and therefore altered perception of the visual signature, visual deformation of the internal elements through it. radiated surfaces of ice (refraction phenomena).
  • the principle of the present invention is to integrate the ELU light element into a part of the PGL glass without any clearance between the PGL part of the glass and the ELU light element, to avoid any visible condensation.
  • the ELU light element and the PGL glass part form an EOM monobloc optical assembly which appears as one and the same part.
  • the ELU luminous element is overmolded on the inner surface of the PGL ice portion as illustrated in Figures 5 to 9.
  • the ELU light element can be chosen from a layer of opaline material, or even a light guide, or light curtain, so that the juxtaposition of the chosen element, with the thickness of the part of the PGL ice makes it possible to obtain the desired optical effect.
  • the monobloc optical element EOM is produced by injecting a bi-material resin into a mold defining the shapes of the part of ice PGL and of the luminous element ELU .
  • a first type of material is used for the PGL ice portion and a second material, different or identical, is used for the ELU luminous element for example a PMMA (Polymethyl methacrylate PMMA) which can be transparent, opaque or opaline, and PC (Polycarbonate).
  • PMMA Polymethyl methacrylate PMMA
  • PC Polycarbonate
  • the monobloc optical element EOM is produced by injecting a tri-material resin into a mold defining the shapes of the part of ice PGL, of the luminous element ELU (opaline screen for example) and EGO opaque ice elements obtained from a third type of material, for example an opaque black PMMA.
  • the EOM one-piece optical assembly defines a COC hollow body whose outer and inner profile has a general "U" shape.
  • the first and second branches BR1 and BR2 of the “U” are substantially flared starting from the base of the “U” (corresponding to the bottom of the hollow body COC).
  • the ELU light element is overmolded inside the PGL ice portion completely conforming to the interior "U" profile of the PGL ice portion. It therefore also has a general flared "U" shape.
  • the ice part PGL and the luminous element ELU therefore have first and second branches BG1, BG2 and BE1, BE2 respectively.
  • the first and second branches BG1 and BG2 of the PGL ice portion extend respectively by substantially planar portions PPL extending over the rest of the wall of the GLA glass, substantially uniform, closing the BOI case.
  • the first and second branches BE1 and BE2 of the ELU light element stop at the level of the plane parts PPL of the wall of ice GLA.
  • a layer of light-opaque material (opaque glass GLO) is overmolded with the PGL ice portion and the ELU luminous element.
  • This opaque GLO lens is arranged at the base of the COC hollow body, on either side of the ELU light element, on the inner face of the PPG flat parts of the GLA lens.
  • the opaque glass areas make it possible, on the one hand, to surround the transparent area (s) dedicated to the light function by preventing light leaks, on the other hand to hide from the light. exterior view the other technical components of the signaling device.
  • the base of the hollow body COC corresponds to the rest of the glass GLA defining a substantially uniform wall which closes the front face of the case (not shown).
  • FIGS. 7 to 9 respectively illustrate different arrangements of one or more light sources SOL with respect to the monobloc optical assembly EOM of the signaling device DIS according to the invention. These SOL light sources are used to illuminate the ELU light element integrated into the PGL ice part.
  • FIG. 7 illustrates a first "mixed” arrangement in which two light sources (a first and a second LEDs) SOL1 and SOL2 respectively illuminate the first and second branches BE1 and BE2 of the light element ELU.
  • the acronym LED (or LEDs in the plural) for "Light-Emitting Diode” designates a light-emitting diode commonly used as a light source in automotive vehicle lighting and / or signaling devices.
  • the first LED SOL1 is arranged opposite the edge of the first branch BE1 of the light element ELU.
  • the luminous flux is directly injected into the edge of the first branch BE1.
  • the ELU light element is used as a light guide.
  • the second SOL2 LED is arranged opposite a REF reflector of partially parabolic shape.
  • the luminous flux generated by the second SL2 LED is reflected by the REF reflector towards the rear of the ELU light element which is used as an opaline screen to diffuse light over the entire outer surface of the ELU light element.
  • This arrangement is said to be “mixed” because it combines illumination from the edge with illumination from the rear of the luminous element.
  • Figure 8 illustrates a second arrangement in which a single light source (an LED or a row of LEDs) SOL is arranged between the first and second branches BE1 and BE2 of the light element ELU.
  • a single light source an LED or a row of LEDs
  • SOL single light source
  • a REF reflector or other optical element such as a light guide section (not shown) can be arranged between the LED SOL and the first and second branches BE1 and BE2 of the light element ELU to confine the luminous flux towards the ELU luminous element.
  • FIG. 9 illustrates a third arrangement in which the luminous element ULS is split into first and second portions ULS1 and ULS2, obtained by the same injection process and with the same second type of material.
  • the first and second parts of the ELU1 and ELU2 light element match
  • first and second branches BG1 and BG2 of the part of ice PGL are respectively the first and second branches BG1 and BG2 of the part of ice PGL. They do not cover the base of the “U” of the part of PGL ice (corresponding to the bottom of the COC hollow body), thus letting appear a part of transparent PGT glass defining an exit “window” for the light.
  • Two light sources (a first and a second LED) SOL1 and SOL2 are arranged respectively facing the edges of the branches BE1 and BE2 of the first and second parts of the light element ELU1 and ELU2.
  • the luminous flux generated by the first and second LEDs SOL1 and SOL2 are injected directly into the edges of the first and second branches.
  • a third light source (third LED) SOL3 is arranged between the first and second LEDs, SOL1 and SOL2, facing the window PGT.
  • This arrangement makes it possible to obtain simultaneously or independently, a brake light function and a night signal light function.
  • the luminous flux generated by the third central LED SOL3 passes directly through the PGL glass part to perform the brake light function which requires more luminous flux than a function. signage at night.
  • the interior surface of the PCT window, facing the third LED SOL3, may comprise a diffraction grating RED obtained during the molding of the portion of ice, PGL defining for example a plurality of optical prisms.
  • the COC hollow body of the EOM one-piece optical assembly can be likened to a PRO protuberance with significant relief from the rest of the wall of the GLA lens.
  • COC hollow bodies or PRO protuberances can be arranged in parallel, for example along Y, and preferably three PRO protuberances to define a light signature specific to an automobile manufacturer.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)

Abstract

Luminous signalling device for a vehicle and in particular for a motor vehicle, said device comprising: - a casing that is open at the front, i.e. that opens onto the exterior when the device is mounted on a vehicle, - at least one light source (SOL) placed inside the casing (BOI), - an outer lens (GLA) corresponding to a partition suitable for closing the casing, and - at least one luminous element (ELU) suitable for scattering light generated by said light source (SOL), characterized in that the luminous element (ELU) is over-moulded on a portion (PGL) of the outer lens, so as to form an integral optical element (IOE): the outer-lens portion (PGL) corresponding to the exterior face of the integral optical element (IOE), and the luminous element (ELU) covering the interior face of the outer-lens portion (PGL) corresponding to the interior face of the integral optical element (IOE).

Description

Description Description
Titre de l’invention : Dispositif de signalisation lumineuse pour véhicule Title of the invention: Light signaling device for vehicles
L'invention concerne, de façon générale, les dispositifs de signalisation lumineuse, destinés plus particulièrement aux véhicules automobiles, comprenant une fonction de signalisation lumineuse qui est réalisée par diffusion de la lumière émise par une source lumineuse via un guide de lumière de type plat ou autre type d’élément lumineux. The invention relates, in general, to light signaling devices, intended more particularly for motor vehicles, comprising a light signaling function which is performed by scattering the light emitted by a light source via a light guide of the flat type or other type of light element.
De manière connue, un dispositif de signalisation lumineuse est disposé à l’avant ou à l’arrière d’un véhicule automobile afin de signaliser la position du véhicule aux autres usagers de la route. In known manner, a light signaling device is arranged at the front or at the rear of a motor vehicle in order to signal the position of the vehicle to other road users.
Selon l’état de la technique, on connaît des dispositifs de signalisation pour feux arrière ou avant de véhicule utilisant des écrans opalins, des guides ou des rideaux de lumière pour créer des signatures lumineuses propre à chaque constructeur. On désigne par rideau de lumière un guide de lumière plutôt mince qu’on utilise pour diffuser la lumière par sa plus grande surface (et non par un côté ou une tranche). According to the state of the art, signaling devices for rear or front lights of vehicles are known using opaline screens, guides or light curtains to create light signatures specific to each manufacturer. A light curtain is a rather thin light guide that is used to diffuse light over its largest area (not one side or one edge).
Pour cela, le guide possède soit un aspect opalin, soit des micros optiques en surface ou dans la matière qui renvoient la lumière perpendiculairement à la surface du guide, ce qui crée un effet dit de « rideau de lumière ». For this, the guide has either an opaline appearance, or optical microphones on the surface or in the material which reflect the light perpendicularly to the surface of the guide, which creates a so-called “light curtain” effect.
Ces différents éléments, désignés par « éléments lumineux » sont positionnés derrière une glace de feu comme illustrée aux figures 1 , 2 et 3. These various elements, designated by “light elements” are positioned behind a fire glass as illustrated in Figures 1, 2 and 3.
Ainsi, on connaît notamment du document FR3055264, tel qu’illustré à la figure 1 , un dispositif de signalisation DIS comportant un boîtier BOI, ouvert vers l’avant, Thus, in particular from document FR3055264, as illustrated in Figure 1, a DIS signaling device is known comprising a BOI box, open towards the front,
correspondant à l’extérieur du dispositif DIS monté sur un véhicule, une paroi de fermeture transparente, désignée par le terme « glace » GLA dans la suite de la description, adaptée pour coopérer avec ledit boîtier BOI, un guide de lumière plat ELU, adapté pour s’insérer dans ledit boîtier BOI et une pluralité de sources lumineuses (non représentées), adaptées pour s’insérer dans le boîtier BOI, de façon à injecter de la lumière dans le guide de lumière plat ELU permettant la diffusion de la lumière. corresponding to the outside of the DIS device mounted on a vehicle, a transparent closing wall, designated by the term "glass" GLA in the remainder of the description, adapted to cooperate with said BOI box, a flat ELU light guide, suitable to fit into said BOI box and a plurality of light sources (not shown), adapted to fit into the BOI box, so as to inject light into the flat ELU light guide allowing light to be diffused.
Le guide de lumière plat ELU est adapté pour s’insérer à l’intérieur du boîtier DIS, en amont de la glace GLA, de manière à conserver un espace vide entre ledit guide de lumière plat ELU et ladite glace GLA. Un tel espace vide, désigné jeu fonctionnel JEF, est nécessaire à la circulation de l’air afin d’éviter toute condensation à l’intérieur du boîtier BOI et particulièrement sur la face intérieure de la glace, car cette condensation serait visible. The ELU flat light guide is adapted to fit inside the DIS housing, upstream of the GLA lens, so as to maintain an empty space between said ELU flat light guide and said GLA lens. Such an empty space, designated JEF functional set, is necessary for the circulation of air in order to avoid any condensation inside the BOI box and particularly on the inside face of the glass, as this condensation would be visible.
Les figures 2 et 3 illustre des dispositifs de signalisation de feux arrière de l’état de l’art, utilisant un écran, ou un rideau de lumière, comme élément optique ELU, disposés entre la source de lumière SOL et la glace GLA fermant le boitier du feu BOL Un écran ou un rideau de lumière sont dits opalins (c’est-à-dire, pas tout à fait transparent et pas tout à fait opaque) et sont aptes à diffuser la lumière sur toute leur surface apparente. On désigne alors ce type d’élément lumineux par « éléments optiques diffusant ». Figures 2 and 3 illustrate rear light signaling devices of the state of the art, using a screen, or a light curtain, as optical element ULS, arranged between the SOL light source and the GLA glass closing the BOL light box A screen or a light curtain are said to be opaline (that is to say, not completely transparent and not completely opaque) and are able to diffuse light over their entire visible surface. This type of light element is then designated by “diffusing optical elements”.
La glace GLA et l’élément lumineux ELU constituent plusieurs pièces qu’il faut assembler avec une contrainte de positionnement de l’une par rapport à l’autre, ce qui représente un coût supplémentaire par rapport à une pièce unique. The GLA lens and the ELU light element are several parts that must be assembled with a positioning constraint relative to each other, which represents an additional cost compared to a single part.
D’autre part, le décalage JEF entre la surface extérieure de la glace GLA et l’élément lumineux ELU peut, dans le cas d’une glace de forme complexe, présentant un relief important, générer une incohérence visuelle entre les deux (déformations visuelles par réfraction). On the other hand, the JEF offset between the outer surface of the GLA lens and the ELU luminous element can, in the case of a complex shaped lens with significant relief, generate a visual inconsistency between the two (visual deformations by refraction).
Enfin, avec le souhait du style d’avoir des glaces présentant un relief important et une signature visuelle qui répondent aux mêmes attentes qu’avec des glaces présentant un faible relief, l’espace nécessaire entre la glace et l’élément lumineux devient très problématique, voire impossible à obtenir sans dégradation de l’assemblage et de l’effet esthétique recherché. Finally, with the style's desire to have mirrors with significant relief and a visual signature that meet the same expectations as with mirrors with low relief, the space required between the mirror and the light element becomes very problematic. , or even impossible to obtain without degrading the assembly and the desired aesthetic effect.
L’invention vise donc à pallier ces inconvénients en proposant un dispositif de signalisation lumineuse dans lequel la glace et l’élément lumineux ne forment qu’une seule pièce ce qui, outre la réduction de coût, simplifie l’assemblage et évite les incohérences visuelles. Par ailleurs, le jeu actuellement nécessaire entre glace et l’élément lumineux, pour éviter la condensation, est supprimé. The invention therefore aims to overcome these drawbacks by providing a light signaling device in which the glass and the light element form a single piece which, in addition to the reduction in cost, simplifies assembly and avoids visual inconsistencies. . In addition, the currently necessary clearance between the glass and the light element, to prevent condensation, has been eliminated.
De ce fait, il ne peut plus y avoir de condensation entre glace et l’élément lumineux et le profil extérieur de la glace peut accepter des reliefs importants sans dégradation de l’effet visuel donc esthétique. As a result, there can no longer be any condensation between the glass and the luminous element and the external profile of the glass can accept significant relief without degradation of the visual and therefore aesthetic effect.
Plus précisément, pour parvenir à ce résultat, la présente invention propose un dispositif de signalisation lumineuse pour véhicule, en particulier pour véhicule automobile, ledit dispositif comprenant : More precisely, to achieve this result, the present invention proposes a light signaling device for a vehicle, in particular for a motor vehicle, said device comprising:
- un boîtier ouvert à l’avant, c’est-à-dire vers l’extérieur lorsque le dispositif est monté sur un véhicule, - a box open to the front, that is to say to the outside when the device is mounted on a vehicle,
- au moins une source lumineuse disposée à l’intérieur du boîtier, - at least one light source placed inside the housing,
- une glace correspondant à une paroi adaptée pour fermer le boîtier, et - a glass corresponding to a wall adapted to close the housing, and
- au moins un élément lumineux adapté pour diffuser de la lumière issue de ladite source lumineuse. - at least one light element suitable for diffusing light coming from said light source.
Le dispositif est caractérisé en ce que l’élément lumineux est surmoulée sur une partie de la glace pour former un élément optique monobloc : la partie de glace correspondant à la face extérieure de l’élément optique monobloc et l’élément lumineux recouvrant la face intérieure de la partie de glace, correspondant à la face intérieure de l’élément optique monobloc. The device is characterized in that the luminous element is molded onto a part of the lens to form a single-piece optical element: the portion of mirror corresponding to the outer face of the one-piece optical element and the light element covering the inner face of the lens part, corresponding to the inner face of the one-piece optical element.
Selon une caractéristique, l’élément optique monobloc définit un corps creux obtenu après moulage par injection bi-matière : un premier type de matière constituant la partie de glace et une deuxième matière identique ou différente, constituant l’élément lumineux ; ledit corps creux formant une protubérance vers l’extérieur par rapport au reste de la paroi de glace fermant le boîtier. According to one characteristic, the one-piece optical element defines a hollow body obtained after two-material injection molding: a first type of material constituting the ice part and a second identical or different material constituting the luminous element; said hollow body forming an outward protrusion from the rest of the glass wall closing the housing.
Selon une autre caractéristique, l’élément lumineux est scindé en deux parties obtenues à partir du même procédé de moulage par injection du même deuxième type de matériau ; chaque partie de l’élément lumineux définissant la face intérieure du corps creux à l’exception du fond du corps creux qui définit une fenêtre de sortie pour la lumière. According to another characteristic, the luminous element is split into two parts obtained from the same injection molding process of the same second type of material; each part of the luminous element defining the inner face of the hollow body except the bottom of the hollow body which defines an exit window for the light.
Selon une autre caractéristique, la fenêtre de sortie de lumière supporte un réseau de diffraction sur sa face intérieure. According to another characteristic, the light exit window supports a diffraction grating on its inner face.
Selon une autre caractéristique, la partie de glace a une forme générale de « U » dont les premières et deuxièmes branches s’évasent en partant du fond du corps creux jusqu’au reste de la paroi de glace ; l’élément lumineux recouvrant la face intérieure de la partie de glace présentant également respectivement une forme générale de « U » dont les premières et deuxièmes branches recouvrent respectivement les première et deuxième branches de la partie de glace. According to another characteristic, the ice portion has a general "U" shape, the first and second branches of which widen from the bottom of the hollow body to the rest of the ice wall; the luminous element covering the inner face of the ice part also respectively having a general shape of "U", the first and second branches of which respectively cover the first and second branches of the ice part.
Selon une autre caractéristique, les extrémités des première et deuxième branches la partie de glace se raccordent respectivement au reste de la paroi de glace présentant une surface sensiblement uniforme, par des parties sensiblement planes. According to another characteristic, the ends of the first and second branches of the ice portion are connected respectively to the rest of the ice wall having a substantially uniform surface, by substantially flat parts.
Selon une autre caractéristique, les surfaces intérieures des parties sensiblement planes de la paroi de glace sont recouvertes d’un troisième type de matériau opaque à la lumière obtenue à partir du même procédé de moulage par injection et définissant des parties de glace opaque à la lumière. According to another characteristic, the interior surfaces of the substantially flat parts of the ice wall are covered with a third type of material opaque to light obtained from the same injection molding process and defining parts of glass opaque to light. .
Selon une autre caractéristique, au moins une source de lumière est agencée pour diffuser la lumière dans les tranches des première et deuxième branches de l’élément lumineux utilisé en tant que guide de lumière ou pour éclairer la ou les faces arrières de l’élément lumineux utilisé en tant qu’écran opalin. According to another characteristic, at least one light source is arranged to diffuse the light in the edges of the first and second branches of the luminous element used as a light guide or to illuminate the rear face (s) of the luminous element. used as an opaline screen.
Selon une autre caractéristique, au moins une source de lumière est agencée en regard de chaque tranche des première et deuxième branches de l’élément lumineux pour éclairer chacune des première et deuxième branches de l’élément lumineux et dans lequel au moins une troisième source lumineuse est agencée en regard de la fenêtre de sortie de lumière de la partie de glace. According to another characteristic, at least one light source is arranged opposite each edge of the first and second branches of the light element to illuminate each of the first and second branches of the light element and in which at least a third light source is arranged opposite the light exit window of the part of glass.
L’invention a pour deuxième objet, un véhicule automobile comprenant au moins un dispositif de signalisation lumineuse tel que décrit ci-dessus. The second object of the invention is a motor vehicle comprising at least one light signaling device as described above.
L’invention concerne également un véhicule comprenant un dispositif de signalisation lumineuse selon l’invention. The invention also relates to a vehicle comprising a light signaling device according to the invention.
D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée des modes de réalisation de l'invention, donnés à titre d'exemple uniquement, et en référence aux dessins qui montrent : Other characteristics and advantages of the invention will become apparent on reading the detailed description of the embodiments of the invention, given by way of example only, and with reference to the drawings which show:
[Fig. 1] la figure 1 , déjà décrite, un schéma d’un dispositif d’éclairage et/ou de signalisation lumineuse selon l’art antérieur ; [Fig. 1] Figure 1, already described, a diagram of a lighting and / or light signaling device according to the prior art;
[Fig. 2] la figure 2, déjà décrite, un deuxième dispositif de signalisation selon l’art antérieur ; [Fig. 2] Figure 2, already described, a second signaling device according to the prior art;
[Fig. 3] la figure 3, déjà décrite, un troisième dispositif de signalisation selon l’art antérieur ; [Fig. 4] la figure 4, une vue en coupe selon le plan XY d’un élément optique d’un dispositif de signalisation, montrant l’impact du jeu fonctionnel JEF sur une glace présentant un relief important. [Fig. 3] Figure 3, already described, a third signaling device according to the prior art; [Fig. 4] FIG. 4, a sectional view along the XY plane of an optical element of a signaling device, showing the impact of the JEF functional clearance on ice with high relief.
[Fig. 5] la figure 5, une vue en coupe selon le plan XY d’un premier mode de réalisation d’un élément optique monobloc d’un dispositif de signalisation lumineuse selon l’invention ; [Fig. 6] la figure 6, une vue en coupe selon le plan XY d’un deuxième mode de réalisation d’un élément optique monobloc d’un dispositif de signalisation lumineuse selon l’invention [Fig. 7] la figure 7, une vue en coupe selon le plan XY d’un premier agencement de source(s) lumineuse(s) et d’un élément optique monobloc d’un dispositif de signalisation lumineuse selon l’invention ; [Fig. 5] FIG. 5, a sectional view along the XY plane of a first embodiment of a one-piece optical element of a light signaling device according to the invention; [Fig. 6] FIG. 6, a sectional view along the XY plane of a second embodiment of a one-piece optical element of a light signaling device according to the invention [Fig. 7] FIG. 7, a sectional view along the XY plane of a first arrangement of light source (s) and of a one-piece optical element of a light signaling device according to the invention;
[Fig. 8] la figure 8, une vue en coupe selon le plan XY d’un deuxième agencement de source(s) lumineuse(s) et d’un élément optique monobloc d’un dispositif de signalisation lumineuse selon l’invention ; et [Fig. 8] FIG. 8, a sectional view along the XY plane of a second arrangement of light source (s) and of a one-piece optical element of a light signaling device according to the invention; and
[Fig. 9] la figure 9, une vue en coupe selon le plan XY d’un troisième agencement de source(s) lumineuse(s) et d’un élément optique monobloc d’un dispositif de signalisation lumineuse selon l’invention. [Fig. 9] FIG. 9, a view in section along the XY plane of a third arrangement of light source (s) and of a single-piece optical element of a light signaling device according to the invention.
Les dessins des figures sont orientés suivant un référentiel XYZ généralement utilisé pour représenter un véhicule automobile dans l’espace. The drawings of the figures are oriented along an XYZ frame of reference generally used to represent a motor vehicle in space.
Par convention, on désignera par disposition « avant », une disposition orientée vers l’extérieur du dispositif de signalisation lorsqu’il est considéré monté sur le véhicule. De la même manière, les termes « extérieur » et « intérieur » désignent respectivement des dispositions d’éléments se situant vers l’extérieur et vers l’intérieur du dispositif de signalisation. By convention, the term “front” arrangement will denote an arrangement oriented towards the outside of the signaling device when it is considered mounted on the vehicle. Likewise, the terms “exterior” and “interior” respectively denote arrangements of elements situated towards the exterior and toward the interior of the signaling device.
Sur les différentes figures, les éléments identiques ou similaires, sont référencés avec les mêmes repères. In the various figures, identical or similar elements are referenced with the same references.
La figure 4 illustre suivant une vue en coupe dans le plan XY du référentiel XYZ, un détail de l’assemblage d’une partie de glace PGL et d’un l’élément lumineux ELU pour une glace GLA à fort relief. Le profil de la partie de glace PGL forme une protubérance PRO qui est imposée par le style. Figure 4 illustrates, in a sectional view in the XY plane of the XYZ frame of reference, a detail of the assembly of a part of PGL ice and of an ELU luminous element for a GLA glass with high relief. The profile of the PGL ice part forms a PRO protuberance which is imposed by the style.
Sur cette figure, on observe que le jeu nécessaire JEF (suivant Y) entre l’élément lumineux ELU et la partie de glace PGL impose à la fois une réduction de la largeur RDR de l’élément lumineux ELU (suivant Y) et un décalage DER (suivant X) résultant important entre l’extrémité libre de l’élément lumineux ELU et le fond de la partie de glace PGL. In this figure, one observes that the necessary clearance JEF (according to Y) between the luminous element ELU and the part of glass PGL imposes both a reduction in the width RDR of the luminous element ELU (according to Y) and a shift DER (along X) resulting significant between the free end of the ELU light element and the bottom of the PGL ice part.
Dans le cas d’une glace GLA de forme simple (avec peu de relief), ce jeu crée déjà quelques effets esthétiques indésirables, comme une vision moins nette des éléments internes, ainsi qu’une difficulté pour atteindre les angles de visibilité réglementaires. In the case of a GLA mirror of simple shape (with little relief), this game already creates some undesirable aesthetic effects, such as a less clear view of the internal elements, as well as difficulty in reaching the regulatory angles of visibility.
Ces effets indésirables sont accentués avec une glace GLA de forme complexe présentant des reliefs important (protubérances) : différence de forme entre la glace extérieure et les éléments internes (lumineux) et donc perception altérée de la signature visuelle, déformation visuelle des éléments internes au travers des surfaces rayonnées de la glace (phénomènes de réfractions). These undesirable effects are accentuated with a GLA lens of complex shape with significant reliefs (protuberances): difference in shape between the exterior lens and the internal elements (light) and therefore altered perception of the visual signature, visual deformation of the internal elements through it. radiated surfaces of ice (refraction phenomena).
Le principe de la présente invention consiste à intégrer l’élément lumineux ELU à une partie de la glace PGL sans aucun jeu entre la partie de glace PGL et l’élément lumineux ELU, pour éviter toute condensation visible. The principle of the present invention is to integrate the ELU light element into a part of the PGL glass without any clearance between the PGL part of the glass and the ELU light element, to avoid any visible condensation.
Ainsi l’élément lumineux ELU et la partie de glace PGL forment un ensemble optique monobloc EOM qui se présente comme une seule et même pièce. Thus, the ELU light element and the PGL glass part form an EOM monobloc optical assembly which appears as one and the same part.
Pour cela, selon l’invention, l’élément lumineux ELU est surmoulé sur la surface intérieure de la partie de glace PGL comme illustrée aux figures 5 à 9. For this, according to the invention, the ELU luminous element is overmolded on the inner surface of the PGL ice portion as illustrated in Figures 5 to 9.
L’élément lumineux ELU peut être choisi parmi une couche de matériau opalin, voire un guide de lumière, ou rideau de lumière, afin que la juxtaposition de l’élément choisi, avec l’épaisseur de la partie de glace PGL permette d’obtenir l’effet optique désiré. The ELU light element can be chosen from a layer of opaline material, or even a light guide, or light curtain, so that the juxtaposition of the chosen element, with the thickness of the part of the PGL ice makes it possible to obtain the desired optical effect.
Dans un premier mode de réalisation, décrit en référence à la figure 5, l’élément optique monobloc EOM est réalisé par injection d’une résine bi matière dans un moule définissant les formes de la partie de glace PGL et de l’élément lumineux ELU. Un premier type de matériau est utilisé pour la partie de glace PGL et un deuxième matériau, différent ou identique, est utilisé pour l’élément lumineux ELU par exemple un PMMA (Polyméthacrylate de méthyle PMMA) qui peut être transparent, opaque ou opalin, et du PC (Polycarbonate). In a first embodiment, described with reference to FIG. 5, the monobloc optical element EOM is produced by injecting a bi-material resin into a mold defining the shapes of the part of ice PGL and of the luminous element ELU . A first type of material is used for the PGL ice portion and a second material, different or identical, is used for the ELU luminous element for example a PMMA (Polymethyl methacrylate PMMA) which can be transparent, opaque or opaline, and PC (Polycarbonate).
Dans un deuxième mode de réalisation, décrit en référence à la figure 6, l’élément optique monobloc EOM est réalisé par injection d’une résine tri matière dans un moule définissant les formes de la partie de glace PGL, de l’élément lumineux ELU (écran opalin par exemple) et d’éléments de glace opaque EGO obtenues à partir d’un troisième type de matériau par exemple un PMMA noir opaque. In a second embodiment, described with reference to FIG. 6, the monobloc optical element EOM is produced by injecting a tri-material resin into a mold defining the shapes of the part of ice PGL, of the luminous element ELU (opaline screen for example) and EGO opaque ice elements obtained from a third type of material, for example an opaque black PMMA.
Dans les premier et deuxième modes de réalisation illustrés aux figures 5 et 6, l’ensemble optique monobloc EOM définit un corps creux COC dont le profil extérieur et intérieur a une forme générale en « U ». Les première et deuxième branches BR1 et BR2 du « U » sont sensiblement évasées en partant de la base du « U » (correspondant au fond du corps creux COC). In the first and second embodiments illustrated in Figures 5 and 6, the EOM one-piece optical assembly defines a COC hollow body whose outer and inner profile has a general "U" shape. The first and second branches BR1 and BR2 of the “U” are substantially flared starting from the base of the “U” (corresponding to the bottom of the hollow body COC).
L’élément lumineux ELU est surmoulé à l’intérieur de la partie de glace PGL en épousant complètement le profil intérieur en « U » de la partie de glace PGL. Il a donc également une forme générale en « U » évasé. La partie de glace PGL et l’élément lumineux ELU présentent donc respectivement des première et deuxième branches BG1 , BG2 et BE1 , BE2. The ELU light element is overmolded inside the PGL ice portion completely conforming to the interior "U" profile of the PGL ice portion. It therefore also has a general flared "U" shape. The ice part PGL and the luminous element ELU therefore have first and second branches BG1, BG2 and BE1, BE2 respectively.
Les première et deuxième branches BG1 et BG2 de la partie de glace PGL se prolongent respectivement par des parties sensiblement planes PPL s’étendant sur le reste de la paroi de la glace GLA, sensiblement uniforme, fermant le boitier BOI. The first and second branches BG1 and BG2 of the PGL ice portion extend respectively by substantially planar portions PPL extending over the rest of the wall of the GLA glass, substantially uniform, closing the BOI case.
Les première et deuxième branches BE1 et BE2 de l’élément lumineux ELU s’arrêtent au niveau des parties planes PPL de la paroi de glace GLA. The first and second branches BE1 and BE2 of the ELU light element stop at the level of the plane parts PPL of the wall of ice GLA.
En se référant plus particulièrement à la figure 6, une couche de matériau opaque à la lumière (glace opaque GLO) est surmoulée avec la partie de glace PGL et l’élément lumineux ELU. Cette glace opaque GLO est agencée à la base du corps creux COC, de part et d’autre de l’élément lumineux ELU, sur la face intérieure des parties planes PPG de la glace GLA. Les zones de glace opaque permettent, d’une part d’entourer la (ou les) zone(s) transparente(s) dédiée(s) à la fonction lumineuse en évitant les fuites de lumière, d’autre part à cacher de la vue extérieure les autres éléments techniques constitutifs du dispositif de signalisation. La base du corps creux COC correspond au reste de la glace GLA définissant une paroi sensiblement uniforme qui ferme la face avant du boitier (non représenté). With particular reference to Figure 6, a layer of light-opaque material (opaque glass GLO) is overmolded with the PGL ice portion and the ELU luminous element. This opaque GLO lens is arranged at the base of the COC hollow body, on either side of the ELU light element, on the inner face of the PPG flat parts of the GLA lens. The opaque glass areas make it possible, on the one hand, to surround the transparent area (s) dedicated to the light function by preventing light leaks, on the other hand to hide from the light. exterior view the other technical components of the signaling device. The base of the hollow body COC corresponds to the rest of the glass GLA defining a substantially uniform wall which closes the front face of the case (not shown).
Partant du mode de réalisation de la figure 6, les figures 7 à 9 illustrent respectivement différents agencements d’une ou de plusieurs sources lumineuses SOL par rapport à l’ensemble optique monobloc EOM du dispositif de signalisation DIS selon l’invention. Ces sources de lumière SOL permettent d’éclairer l’élément lumineux ELU intégré à la partie de glace PGL. Starting from the embodiment of FIG. 6, FIGS. 7 to 9 respectively illustrate different arrangements of one or more light sources SOL with respect to the monobloc optical assembly EOM of the signaling device DIS according to the invention. These SOL light sources are used to illuminate the ELU light element integrated into the PGL ice part.
La figure 7 illustre un premier agencement « mixte » dans lequel deux sources de lumière (une première et une deuxième LEDs) SOL1 et SOL2 éclairent respectivement les premières et deuxièmes branches BE1 et BE2 de l’élément lumineux ELU. L’acronyme anglo-saxon LED (ou LEDs au pluriel) pour « Light-Emitting Diode », désigne une diode électroluminescente couramment utilisée comme source de lumière dans les dispositifs d’éclairage et/ou de signalisation de véhicule automobile. FIG. 7 illustrates a first "mixed" arrangement in which two light sources (a first and a second LEDs) SOL1 and SOL2 respectively illuminate the first and second branches BE1 and BE2 of the light element ELU. The acronym LED (or LEDs in the plural) for "Light-Emitting Diode" designates a light-emitting diode commonly used as a light source in automotive vehicle lighting and / or signaling devices.
La première LED SOL1 est agencée en regard de la tranche de la première branche BE1 de l’élément lumineux ELU. Le flux lumineux est directement injecté dans la tranche de la première branche BE1. L’élément lumineux ELU est utilisé en tant que guide de lumière. The first LED SOL1 is arranged opposite the edge of the first branch BE1 of the light element ELU. The luminous flux is directly injected into the edge of the first branch BE1. The ELU light element is used as a light guide.
La deuxième LED SOL2 est agencée en regard d’un réflecteur REF de forme partiellement parabolique. Le flux lumineux généré par la deuxième LED SL2 est réfléchi par le réflecteur REF vers l’arrière de l’élément lumineux ELU qui est utilisé comme écran opalin pour diffuser la lumière sur toute la surface extérieure de l’élément lumineux ELU. Cet agencement est dit « mixte » car il combine un éclairage par la tranche avec un éclairage par l’arrière de l’élément lumineux. The second SOL2 LED is arranged opposite a REF reflector of partially parabolic shape. The luminous flux generated by the second SL2 LED is reflected by the REF reflector towards the rear of the ELU light element which is used as an opaline screen to diffuse light over the entire outer surface of the ELU light element. This arrangement is said to be "mixed" because it combines illumination from the edge with illumination from the rear of the luminous element.
La figure 8 illustre un deuxième agencement dans lequel une seule source de lumière (une LED ou une rangée de LEDs) SOL est agencée entre les première et deuxième branches BE1 et BE2 de l’élément lumineux ELU. Cet agencement montre que l’éclairement de l’élément lumineux ELU lorsque celui-ci est utilisé comme un écran opalin, peut se faire par sa face arrière, et non plus par ses tranches lorsqu’il est utilisé en guide de lumière comme expliqué précédemment en figure 7. Un réflecteur REF ou autre élément optique tel qu’un tronçon de guide de lumière (non représenté), peuvent être agencés entre la LED SOL et les première et deuxième branches BE1 et BE2 de l’élément lumineux ELU pour confiner le flux lumineux vers l’élément lumineux ELU. Figure 8 illustrates a second arrangement in which a single light source (an LED or a row of LEDs) SOL is arranged between the first and second branches BE1 and BE2 of the light element ELU. This arrangement shows that the illumination of the light element ULS when it is used as an opaline screen, can be done by its rear face, and no longer by its edges when it is used as a light guide as explained previously. in Figure 7. A REF reflector or other optical element such as a light guide section (not shown) can be arranged between the LED SOL and the first and second branches BE1 and BE2 of the light element ELU to confine the luminous flux towards the ELU luminous element.
Enfin, la figure 9 illustre un troisième agencement dans lequel l’élément lumineux ELU est scindé en des première et deuxième parties ELU1 et ELU2, obtenues par le même procédé d’injection et avec le même deuxième type de matériau. Finally, FIG. 9 illustrates a third arrangement in which the luminous element ULS is split into first and second portions ULS1 and ULS2, obtained by the same injection process and with the same second type of material.
Les première et deuxième parties d’élément lumineux ELU1 et ELU2 épousent The first and second parts of the ELU1 and ELU2 light element match
respectivement les première et deuxième branches BG1 et BG2 de la partie de glace PGL. Ils ne recouvrent pas la base du « U » de la partie de glace PGL (correspondant au fond du corps creux COC), laissant ainsi apparaitre une partie de glace transparente PGT définissant une « fenêtre » de sortie pour la lumière. Deux sources de lumière (une première et une deuxième LEDs) SOL1 et SOL2 sont agencées respectivement en regard des tranches des branches BE1 et BE2 des première et deuxième parties de l’élément lumineux ELU1 et ELU2. Les flux lumineux générés par les première et deuxième LEDs SOL1 et SOL2 sont injectés directement dans les tranches des première et deuxième branches. respectively the first and second branches BG1 and BG2 of the part of ice PGL. They do not cover the base of the “U” of the part of PGL ice (corresponding to the bottom of the COC hollow body), thus letting appear a part of transparent PGT glass defining an exit “window” for the light. Two light sources (a first and a second LED) SOL1 and SOL2 are arranged respectively facing the edges of the branches BE1 and BE2 of the first and second parts of the light element ELU1 and ELU2. The luminous flux generated by the first and second LEDs SOL1 and SOL2 are injected directly into the edges of the first and second branches.
Une troisième source de lumière (troisième LED) SOL3 est agencée entre les première et deuxième LEDs, SOL1 et SOL2, en regard de la fenêtre PGT. A third light source (third LED) SOL3 is arranged between the first and second LEDs, SOL1 and SOL2, facing the window PGT.
Cet agencement permet d’obtenir simultanément ou de façon indépendante, une fonction de feux stop et une fonction de feu de signalisation de nuit. This arrangement makes it possible to obtain simultaneously or independently, a brake light function and a night signal light function.
Grâce à la « fenêtre » PGT laissée dans le fond du corps creux COC, le flux lumineux généré par la troisième LED centrale SOL3, traverse directement la partie de glace PGL pour réaliser la fonction feu stop qui nécessite plus de flux lumineux qu’une fonction de signalisation de nuit. Thanks to the PGT "window" left in the bottom of the COC hollow body, the luminous flux generated by the third central LED SOL3 passes directly through the PGL glass part to perform the brake light function which requires more luminous flux than a function. signage at night.
La surface intérieure de la fenêtre PCT, en regard de la troisième LED SOL3, peut comporter un réseau de diffraction RED obtenu lors du moulage de la partie de glace, PGL définissant par exemple une pluralité de prismes optiques. The interior surface of the PCT window, facing the third LED SOL3, may comprise a diffraction grating RED obtained during the molding of the portion of ice, PGL defining for example a plurality of optical prisms.
Le corps creux COC de l’ensemble optique monobloc EOM peut s’assimiler à une protubérance PRO présentant un relief important par rapport au reste de la paroi de la glace GLA. The COC hollow body of the EOM one-piece optical assembly can be likened to a PRO protuberance with significant relief from the rest of the wall of the GLA lens.
Plusieurs corps creux COC ou protubérances PRO peuvent être agencés en parallèle par exemple suivant Y, et de préférence, trois protubérances PRO pour définir une signature lumineuse spécifique à un constructeur automobile. Several COC hollow bodies or PRO protuberances can be arranged in parallel, for example along Y, and preferably three PRO protuberances to define a light signature specific to an automobile manufacturer.
En synthèse, les bénéfices technique, économique et esthétique apportés par la présente invention sont : In summary, the technical, economic and aesthetic benefits provided by the present invention are:
- Suppression du risque de condensation visible tout en en s’affranchissant du jeu nécessaire à la circulation d’air entre la glace et l’élément lumineux. - Elimination of the risk of visible condensation while eliminating the clearance necessary for air circulation between the glass and the lighting element.
- Visibilité de l’élément lumineux aux angles requis par la réglementation. - Visibility of the light element at the angles required by regulations.
- Réduction du nombre de pièces. - Reduction in the number of parts.
- Cohérence des formes extérieures de glace avec les élément(s) intérieur(s) lumineux. - Coherence of the exterior forms of ice with the interior luminous element (s).
- Suppression des déformations visuelles (par réfraction) des éléments internes lumineux. - Removal of visual deformations (by refraction) of internal luminous elements.

Claims

REVENDICATIONS
1. Dispositif (DIS) de signalisation lumineuse pour véhicule, en particulier pour véhicule automobile, ledit dispositif (DIS) comprenant : 1. Device (DIS) for light signaling for a vehicle, in particular for a motor vehicle, said device (DIS) comprising:
- un boîtier (BOI) ouvert à l’avant, c’est-à-dire vers l’extérieur lorsque le dispositif (DIS) est monté sur un véhicule, - a box (BOI) open to the front, that is to say to the outside when the device (DIS) is mounted on a vehicle,
- au moins une source lumineuse (SOL) disposée à l’intérieur du boîtier (BOI), - at least one light source (SOL) placed inside the box (BOI),
- une glace (GLA) correspondant à une paroi adaptée pour fermer le boîtier (BOI), et - a glass (GLA) corresponding to a wall adapted to close the case (BOI), and
- au moins un élément lumineux (ELU) adapté pour diffuser de la lumière issue de ladite source lumineuse (SOL), - at least one light element (ELU) suitable for diffusing light coming from said light source (SOL),
caractérisé en ce que l’élément lumineux (ELU) est surmoulé sur une partie de la glace (PGL) pour former un élément optique monobloc (EOM) : la partie de glace (PGL) correspondant à la face extérieure de l’élément optique monobloc (EOM) et l’élément lumineux (ELU) recouvrant la face intérieure de la partie de glace (PGL), correspondant à la face intérieure de l’élément optique monobloc (EOM). characterized in that the luminous element (ELU) is overmolded on a part of the lens (PGL) to form a single-piece optical element (EOM): the portion of glass (PGL) corresponding to the outer face of the single-piece optical element (EOM) and the luminous element (ELU) covering the inner face of the glass part (PGL), corresponding to the inner face of the one-piece optical element (EOM).
2. Dispositif (DIS) selon la revendication 1 , dans lequel l’élément optique monobloc 2. Device (DIS) according to claim 1, wherein the one-piece optical element
(EOM) définit un corps creux (COC) obtenu après moulage par injection bi-matière : un premier type de matière constituant la partie de glace (PGL) et une deuxième matière identique ou différente, constituant l’élément lumineux (ELU) ; ledit corps creux (COC) formant une protubérance (PRO) vers l’extérieur par rapport au reste de la paroi de glace (GLA) fermant le boîtier (BOI). (EOM) defines a hollow body (COC) obtained after two-material injection molding: a first type of material constituting the part of ice (PGL) and a second identical or different material, constituting the luminous element (ULS); said hollow body (COC) forming a protrusion (PRO) outwardly from the rest of the glass wall (GLA) closing the case (BOI).
3. Dispositif (DIS) selon la revendication précédente dans lequel l’élément lumineux 3. Device (DIS) according to the preceding claim wherein the light element
(ELU) est scindé en deux parties obtenues (ELU1 , ELU2) à partir du même procédé de moulage par injection du même deuxième type de matériau ; chaque partie de l’élément lumineux (ELU1 , ELU2) définissant la face intérieure du corps creux (COC) à l’exception du fond du corps creux (COC) qui définit une fenêtre de sortie pour la lumière (PGT). (ELU) is split into two parts obtained (ELU1, ELU2) from the same injection molding process of the same second type of material; each part of the luminous element (ELU1, ELU2) defining the inner face of the hollow body (COC) except the bottom of the hollow body (COC) which defines an exit window for the light (PGT).
4. Dispositif (DIS) selon la revendication précédente, caractérisé en ce que la fenêtre de sortie de lumière (PGT) supporte un réseau de diffraction (RED) sur sa face intérieure. 4. Device (DIS) according to the preceding claim, characterized in that the light output window (PGT) supports a diffraction grating (RED) on its inner face.
5. Dispositif (DIS) selon l’une des revendications 2 à 4, dans lequel la partie de glace (PGL) a une forme générale de « U » dont les premières et deuxièmes branches (BG1 et BG2) s’évasent en partant du fond du corps creux (COC) jusqu’au reste de la paroi de glace (GLA) ; l’élément lumineux (ELU) recouvrant la face intérieure de la partie de glace (PGL) présentant également respectivement une forme générale de « U » dont les première et deuxième branches (BE1 , BE2) recouvrent respectivement les première et deuxième branches (BG1 , BG2) de la partie de glace (PGL). 5. Device (DIS) according to one of claims 2 to 4, wherein the ice portion (PGL) has a general shape of "U" whose first and second branches (BG1 and BG2) flare out from the bottom of the hollow body (COC) to the rest of the ice wall (GLA); the luminous element (ELU) covering the inner face of the glass part (PGL) also respectively having a general shape of "U" of which the first and second branches (BE1, BE2) respectively cover the first and second branches (BG1, BG2) of the ice portion (PGL).
6. Dispositif (DIS) selon la revendication précédente, dans lequel les extrémités des 6. Device (DIS) according to the preceding claim, wherein the ends of
première et deuxième branches (BG1 et BG2) de la partie de glace (PGL) se raccordent respectivement au reste de la paroi de glace (GLA) présentant une surface sensiblement uniforme, par des parties sensiblement planes (PPL). first and second branches (BG1 and BG2) of the part of ice (PGL) are respectively connected to the rest of the wall of ice (GLA) having a substantially uniform surface, by substantially flat parts (PPL).
7. Dispositif (DIS) selon la revendication 6, dans lequel les surfaces intérieures des 7. Device (DIS) according to claim 6, wherein the inner surfaces of the
parties sensiblement planes (PPL) de la paroi de glace (GLA) sont recouvertes d’un troisième type de matériau opaque à la lumière obtenue à partir du même procédé de moulage par injection et définissant des parties de glace opaque à la lumière (GLO). substantially planar parts (PPL) of the glass wall (GLA) are covered with a third type of light opaque material obtained from the same injection molding process and defining light opaque ice parts (GLO) .
8. Dispositif (DIS) selon l’une des revendications 6 ou 7, dans lequel au moins une 8. Device (DIS) according to one of claims 6 or 7, wherein at least one
source de lumière (SOL) est agencée pour diffuser la lumière dans les tranches des première et deuxième branches (BE1 , BE2) de l’élément lumineux (ELU) utilisé en tant que guide de lumière ou pour éclairer la ou les faces arrières de l’élément lumineux (ELU) utilisé en tant qu’écran opalin. light source (SOL) is arranged to diffuse the light in the edges of the first and second branches (BE1, BE2) of the light element (ULS) used as a light guide or to illuminate the rear face (s) of the light element (ELU) used as an opaline screen.
9. Dispositif (DIS) selon l’une des revendications 6 ou 7, dans lequel au moins une 9. Device (DIS) according to one of claims 6 or 7, wherein at least one
source de lumière (SOL1 ou SOL2) est agencée en regard de chaque tranche des première et deuxième branches (BE1 , BE2) de l’élément lumineux (ELU) pour éclairer chacune des première et deuxième branches (BE1 , BE2) de l’élément lumineux (ELU) et dans lequel au moins une troisième source lumineuse (SOL3) est agencée en regard de la fenêtre de sortie de lumière (PGT) de la partie de glace (PGL). light source (SOL1 or SOL2) is arranged opposite each edge of the first and second branches (BE1, BE2) of the luminous element (ELU) to illuminate each of the first and second branches (BE1, BE2) of the element light (ELU) and in which at least a third light source (SOL3) is arranged opposite the light output window (PGT) of the part of ice (PGL).
10. Véhicule automobile comprenant au moins un dispositif (DIS) de signalisation 10. Motor vehicle comprising at least one signaling device (DIS)
lumineuse selon l’une des revendications précédentes. luminous according to one of the preceding claims.
PCT/FR2020/051125 2019-07-01 2020-06-29 Luminous signalling device for a vehicle WO2021001616A1 (en)

Priority Applications (2)

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EP20747052.7A EP3994389B1 (en) 2019-07-01 2020-06-29 Luminous signalling device for a vehicle
CN202080048940.1A CN114072614B (en) 2019-07-01 2020-06-29 Luminous signal device for vehicle

Applications Claiming Priority (2)

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FRFR1907247 2019-07-01
FR1907247A FR3098277A1 (en) 2019-07-01 2019-07-01 Light signaling device for vehicle

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WO2021001616A1 true WO2021001616A1 (en) 2021-01-07

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EP3994389A1 (en) 2022-05-11
CN114072614B (en) 2024-05-17
FR3098277A1 (en) 2021-01-08
EP3994389B1 (en) 2023-09-06

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