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
  • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
  • F21S43/33—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors characterised by their material, surface treatment or coatings
• • 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
  • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
  • F21S41/37—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors characterised by their material, surface treatment or coatings
• • 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
  • F21S43/251—Light guides the light guides being used to transmit light from remote light sources

Definitions

• the present invention relates to the field of lighting and signaling of vehicles, including motor vehicles. It relates more particularly to a device providing a three-dimensional effect (hereinafter referred to as 3D effect) to the rear lights signaling and / or lighting of motor vehicles.
• 3D effect a three-dimensional effect
• light-return systems are known by mirrors arranged opposite one another to provide an impression of infinity by the successive reflections of the image of the place returned by each of the mirrors alternately towards the other, the images with sensation of infinity thus obtained use flat mirrors, entirely reflective and give an impression that does not vary substantially depending on whether one places oneself near or far from one of the mirrors concerned.
• the light sources involved they are all located in front of at least one of the mirrors, while the observer is, meanwhile, in a space between the two mirrors.
• a device for a signaling device for motor vehicles providing a relief effect, consisting of a combination of mirrors and mirrors. semitransparents, as well as a curtain or a curtain guide, constituting a set of means by which the light emitted by at least one LED is distributed over the surface of the curtain and diffused with a striking relief effect.
• the present invention aims to provide an original means and particularly compact and practical to implement, capable of providing a 3D effect to all or part of the lighting of the rear lights of motor vehicles.
• the device according to the invention also makes it possible to add styling effects to the rear lights of said vehicles.
• Another object of the invention is to provide the maximum of functionalities, in a minimum volume advantageously modular, to a set of rear lights of a motor vehicle, and yet to obtain a set of rear lamps providing not only lighting and other signaling expected, but still delivering images with 3D effect.
• the invention provides a new rear light device for motor vehicles, comprising a plurality of LED light sources, said device being composed of a module comprising, from rear to front in the direction of the or substantially parallel light beams emitted by said LEDs:
• PCB printed circuit board
• LEDs at least 3 LEDs, and preferably at least 5 LEDs made functional by appropriate printed circuit boards and an external power supply, light guide,
• optical parts suitable for guiding and / or conveniently distributing the beams of one or more of said LEDs
• At least one semitransparent screen At least one semitransparent screen
• an optional housing for containing the whole in an overall structure, preferably waterproof.
• the device according to the invention can thus be qualified as the first "full modular LED” light, that is to say having only LEDs as light sources and in modular form.
• such a module combines at least 2 LEDs associated with means for providing the lantern light guide function, and 2 additional orange LEDs for the stop function and / or 2 LED additional red for the flashing function and / or 2 extra white LED 2 LEDs for the recoil function, while the LEDs for the stop function and for the flashing function can also be amber in color.
• the light guide is advantageously of the type known to those skilled in the art, or as described in the patent application FR 0905984 of 11.12.2009, published under the number 2953781 Al in the name of the same applicant.
• the mirror comprises at least one saving, that is to say at least one portion of transparent or perforated surface, located opposite at least one LED for stop function and / or for flashing function or reverse light.
• the semitransparent screen can, meanwhile, have a saving compared to each of the light beams from the LEDs or against some of them only.
• the modular device according to the invention has the remarkable advantage of being able to be designed to be extremely compact.
• Fig. 1 shows an exploded schematic view of a module according to one embodiment of the invention
• Fig. 2 is a diagram illustrating the paths of the light emitted by LEDs for a stop function with 3D effect in a module according to the invention
• Fig. 3 represents a diagram illustrating the paths of the light emitted by LEDs for a stop function without 3D effect in a module according to the invention
• Fig. 4 is a diagram illustrating the paths of the light emitted by an LED for a lantern function with 3D effect in a module according to the invention
• Fig. 5 is a schematic elevational view of the illuminating face of a module according to the invention, with visualization of a lantern function with 3D effect;
• Fig. 6 is a schematic elevational view of the illuminating face of a module according to the invention, with visualization of a stop function without 3D effect.
• a module according to the invention may comprise, apart from assembly and / or joining elements, as well as the cables and connections not shown, at least one plate printed circuit board 1, at least one light guide 2, at least two light concentration optical parts for the stop function 3 and at least two light diffusion optical parts for the stop function 3 ', a mirror 4, a semi-transparent screen 5, and an assembly box 6.
• the lantern and stop light guide 2 advantageously comprises at least two savings 7, while the mirror 4 comprises at least two savings 8 and the semi-screen transparent 5 has at least two savings 9.
• the stop function with 3D effect is provided by a set of 2 LEDs 10 combined with a light guide or guide-curtain oriented appropriately to allow the spreading of the light beam by reflections. between the mirror and the semi-transparent screen.
• LEDs 10 '(2 in the example shown) are assigned to the lantern function.
• the stop function may not itself have a 3D effect.
• the light emitted by the LEDs 10 passes through a suitable optic for its distribution in sub-beams 11, which pass through an appropriate saving 8 of the mirror 4 and an appropriate saving 9 of the semi-transparent screen 5.
• At least one LED 10 is able to emit light passing through a light guide 7 combined with a mirror 4 in front of which a semi-screen is inserted. transparent 5.
• the light guide is not flat but conical, elliptical, semi-elliptical, hyperbolic, spiral, spiral logarithmic, helical, or other, reflected light rays from successive reflections converge at the observer's point of view.
• the semi-transparent screen may or may not have one or more savings.
• the stop function can be supplemented or replaced by a flashing function, with an amber LED and a suitable control electronics.
• the device according to the invention may comprise optional or alternative characteristics, which may be taken separately or in combination, such as in particular:
• the housing further includes a transparent window on its front face.
• the optical parts interposed on the path of the light rays between the printed circuit board and the light guide consist essentially of transparent crystal optical parts made of PMMA (poly (methyl methacrylate)) or PC (polycarbonate) provided with optical elements. prisms type, covered or not with grained surface or an opalescent material itself also in PMMA or PC, which make it possible to constitute the stop function, flashing or recoil.
• PMMA poly (methyl methacrylate)
• PC polycarbonate
• the optical parts interposed on the path of the light rays between the light guide and the mirror, to the right of the savings thereof, are essentially composed of transparent crystal optical parts made of PMMA (poly (methyl methacrylate)) or PC ( polycarbonate) provided with prism-type optical elements, whereas said prisms are collimating prisms located in line with the LEDs and diffusers.
• PMMA poly (methyl methacrylate)
• PC polycarbonate
• Means for a stop function without 3D effect may be provided in addition to or instead of means for stop function with 3D effect in the device according to the invention, to further improve the security at the stop signals.
• a space is advantageously provided between the plate of the housing and the mirror, such that the light guide driving these light rays can lead directly to the periphery of the space provided between said mirror and the semi-transparent screen (see Figures 2 and 4 attached).
• the focusing of the light rays emitted by the device can be adjusted by simply adjusting the geometry of the mirror, which can thus be plane, conical, elliptical, semi-elliptical, hyperbolic, spiral, logarithmic spiral, helical, or other.
• the invention also relates to a motor vehicle lamp comprising a rear light device as described above.
• the lighting module in particular for motor vehicle rear lamps, is in a compact form, and nevertheless provides intensities and distributions of functional lighting satisfying the standards and even substantially improved, while the whole the device is a removable module and replaceable when needed, particularly practical and compact. Reducing the size of such a device is only conditioned by the cooling requirements due to the heat emitted in service, knowing that the electronics of the printed circuit boards can be at least partially damaged by overheating.

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)
• Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
• Planar Illumination Modules (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (2)

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Family Applications (1)

Country Status (5)

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Family Cites Families (7)

• 2012
  • 2012-02-03 FR FR1200271A patent/FR2986604B1/fr not_active Expired - Fee Related
• 2013
  • 2013-01-30 PL PL13701483T patent/PL2809984T4/pl unknown
  • 2013-01-30 WO PCT/EP2013/051742 patent/WO2013113728A1/fr active Application Filing
  • 2013-01-30 EP EP13701483.3A patent/EP2809984B1/de active Active
  • 2013-01-30 ES ES13701483T patent/ES2860936T3/es active Active

Non-Patent Citations (1)

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