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
  • 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
  • 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
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
  • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
  • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
  • F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
  • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
  • F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors
• • 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
  • F21V11/14—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures with many small apertures

Definitions

• the present invention relates to a signaling device, particularly a position light located at the rear or front of a vehicle, which is capable of generating a three-dimensional depth effect.
• European application FR 2,954,457 A1 describes such a device. It comprises a housing comprising a support on which are arranged at the periphery a series of light emitting diodes so as to form a general shape of rectangle.
• the device also comprises a flat screen located above the support and which comprises a semi-reflective central portion and a transparent peripheral portion.
• a reflector having a reflective convex outer surface is disposed between the support and the screen, this reflector comprising a series of orifices arranged in line with the light-emitting diodes along their main illumination axis.
• the screen and the reflector form a cavity delimited essentially by the reflective outer surface of the reflector and by the inner surface of the screen.
• the light rays emitted by the light-emitting diodes that pass through the orifices meet the inner surface of the screen.
• the rays striking the transparent portion of the screen are transmitted directly to the space to be illuminated and form a first image providing the signaling function of the device from a photometric point of view.
• Part of the other rays striking the semi-reflective portion of the screen is transmitted by the screen to the space to be illuminated and forms a second image.
• the other part of these others light rays is reflected by the screen towards the convex outer surface of the reflector.
• These rays are then reflected by the reflector towards the screen.
• These will then be partly transmitted by the screen to the space to be illuminated by forming a third image and partly reflected again by the screen to the convex outer surface of the reflector, and so on so to form a multitude of images whose light intensity gradually decreases.
• the light rays reflected by the reflector are gradually shifted towards the center of the cavity, so that the generated images form a series of concentric light rectangles giving an optical depth effect.
• the present invention therefore aims to provide a vehicle signaling device with three-dimensional effect which also has a low manufacturing cost.
• a light signaling device for a motor vehicle with three-dimensional optical effect comprising a filament lamp mounted on a support, a reflector of light rays, said lamp and said reflector being arranged behind an output screen;
• the reflector consists of a frustoconical wall extending flaring from said support towards said screen, and at a predetermined flare angle with respect to the optical axis of said device; said device further comprises a cover enclosing said lamp, said cover being contained within the volume defined by the frustoconical wall of the reflector;
• said cover comprising a lateral wall having a plurality of band-shaped passage windows and arranged one above the other, these windows enabling corresponding beams of light rays emitted by said lamp to pass through said cover and to be reflected to the exit screen by the frustoconical wall of the reflector forming luminous images contained in each other so as to generate said three-dimensional visual effect.
• the signaling device thus makes it possible to generate the same type of three-dimensional effect as the existing devices from a simple optical system based on the combination of a filament lamp, a windowed cover passing light rays and having a particular shape and arrangement, and a frustoconical reflector.
• said cover comprises an upper wall overhanging the lamp and which has a ring-shaped passage window enabling a corresponding beam of light rays emitted by said lamp to pass through said cover and to reach directly the exit screen while forming a central luminous image surrounded by the so-called luminous images;
• the upper wall of the cover has optical means capable of collimating present optical means capable of collimating the light beam passing through this passage window and redirecting it in a direction parallel to the optical axis;
• the lateral wall of the cover has optical means able to collimate the light beams passing through these passage windows and to redirect them towards the reflector so that they are then reflect back to the exit screen;
• the optical means of the side wall of the cover are configured so that said beams strike the reflector at an angle of attack substantially equal to the flare angle of this reflector, so that they are then reflected in parallel directions; to the optical axis;
• the optical means are formed by convergent lenses, Fresnel lenses or streaks;
• the reflector came from molding in one piece with the cover
• said piece is obtained from a transparent material, tinted or not, the outer face of which is then covered with a reflective coating, with the exception of certain uncovered portions which form said passage windows for a portion of the rays; light emitted by the lamp;
• the section of the frustoconical wall of the reflector by a plane perpendicular to the optical axis, has a circular profile, square, triangular, or even elliptical; and or
• the said passage windows are discontinuous on the periphery of the cache.
• FIG. 1 is a schematic representation in vertical section of the signaling device according to a first embodiment of the invention
• FIG. 2 represents an elevational view of the device of FIG. 1 when it is under tension, illustrating the illuminated appearance of this device and the three-dimensional optical effect;
• FIG. 3 is a diagrammatic representation in vertical section of the signaling device according to a variant of the embodiment illustrated in FIG. 1;
• FIGS. 4 to 6 illustrate alternatives of illuminated appearance that can be obtained with certain variants of the device according to the invention.
• Figure 1 shows a signaling device 1 according to a first embodiment of the invention, mounted in a lateral housing provided at the front or rear of a vehicle not shown.
• the device 1 is arranged to emit a colored signaling light radiation, in a generally horizontal direction towards the front or rear of the vehicle according to its positioning on the vehicle.
• This signaling device 1 comprises in a housing 2, a filament lamp 3 emitting light rays 4, a reflector 5 of light rays 4, a cover 6 enclosing the lamp 3 and an output screen 7.
• the lamp 3 is here an incandescent bulb type P21W which is mounted on a support plate 8 forming the rear part of the housing 2, its filament being here oriented along the optical axis XX 'of the signaling device 1.
• the output screen 7 which forms the front portion of the housing 2, is made of transparent thermoplastic material, tinted or not, such as polymethylmethacrylate (PMMA).
• the reflector 5 consists of a frustoconical wall extending flaring at an angle ⁇ relative to the optical axis X-X ', from the plate 8 (supporting the lamp 3 and forming the rear part of the housing 2 ) to the screen 7.
• the section of the frustoconical wall of the reflector 5 by a plane perpendicular to the optical axis X-X ' has a circular profile.
• this reflector 5 is also made of transparent thermoplastic material tinted or not, such as polymethyl methacrylate (PMMA), its outer face (that directed towards the screen 7) being covered with a reflective alumina coating.
• PMMA polymethyl methacrylate
• the cover 6 which is contained entirely inside the volume defined by the reflector 5, comprises a flat upper wall 6A overhanging the lamp 3 and a cylindrical side wall 6B which surrounds this lamp 3. Just like the screen 7 and the reflector 5, it is also obtained from a transparent thermoplastic material tinted or not, such as polymethylmethacrylate (PMMA).
• PMMA polymethylmethacrylate
• the walls 6A and 6B of this cover 6 are made opaque with a coating which is applied on their outer face, with the exception of certain uncovered portions which constitute passage windows 9, 10, 11, 12 for a part of the light rays 4 emitted by the lamp 3.
• the upper wall 6A thus has a ring peripheral plane
• the internal face of the upper wall 6A of the cover 6 has optical means 13 adapted to collimate the light beam 4A which passes through this passage window and to redirect it in a horizontal direction parallel to the optical axis X-X '.
• the side wall 6B of the cover 6 has optical means 14, 15, 16 able to collimate the light beams 4B, 4C, 4D which pass through these windows. and redirecting them towards the reflector 5.
• optical means 14, 15, 16 also makes it possible to modify the striking zones of the light beams 4B, 4C, 4D on the reflector 5, which gives greater freedom of adjustment of the desired pattern in a restricted and constrained environment.
• these optical means are configured so that the beams strike the reflector 5 at an angle of attack substantially equal to the flare angle a of this reflector 5, so that these beams 4B, 4C, 4D are then reflected. in directions parallel to the optical axis X-X '.
• the optical means here consist of convergent lenses 13, 14, 15, 16 arranged on the internal face of the cover 6.
• the reflector 5 is molded in one piece with the cover 6, which makes it possible to limit the number of parts necessary for the manufacture of the device 1 and thus to reduce the costs of come back.
• This also has the advantage of requiring only a single operation of covering the outer face of the workpiece with a reflective coating by simply previously masking the areas 9, 10, 11, 12 not to cover.
• a portion of the light rays 4 emitted by the lamp 3 passes through the upper wall 6A of the cover 6 at its peripheral ring 9, this light beam 4A being redirected by the optical means 13 to the screen 7 in a direction parallel to the optical axis X-X '.
• the beam 4A which then hits this screen 7, is transmitted directly to the space to be illuminated and forms a first central image 17 in the form of a circle, (FIG. 2)
• Another part 4B, 4C, 4D of the light rays emitted by the lamp 3 passes through the side wall 6B of the cover 6 at the level of the three cylindrical strips 10, 11, 12 and is then redirected by the optical means 14, 15, 16 towards the reflector 5.
• the three beams 4B, 4C, 4D reflected by this reflector are offset laterally from one another, so that the generated images 18, 19, 20 form a series of concentric peripheral light circles. with the central image 17 and larger diameters ( Figure 2). This multitude of light circles included in each other thus gives an optical effect of depth to the light signaling generated by the device 1.
• the cover 6 makes it possible to mask the lamp 3, while presenting through the screen 7, an alumina appearance similar to that of the reflector 5.
• the signaling device illustrated in this figure is similar to the device 1 described above except that the reflector 5 'and the cover 6' are obtained separately; the side wall 6B 'of the cover 6' being fastened by clipping on the plate 8 'supporting the lamp 3.
• the sections of the side wall of the cover and the frustoconical wall of the reflector by a plane perpendicular to the optical axis XX ' may have non-circular contours.
• these sections may for example have substantially rectangular contours, the central images 117 and peripherals 118, 119, 120 generated then forming a series of concentric light rectangles (Figure 4).
• these sections could also have square contours, triangular or even elliptical; the generated images then forming a series of squares, triangles or concentric luminous ellipses.
• the flare angle a of this frustoconical wall may be more pronounced on one side than the other of the optical axis X-X ', the generated images then forming a series of luminous patterns contained one in the other but not concentric.
• the generated central 217 and peripheral 218, 219, 220 images then form a series of luminous ellipses. contained in each other but not concentric ( Figure 5).
• the shape of the cover may be different from that illustrated in the figures.
• the latter may also have passage windows for the light rays that are discontinuous on the periphery of the cache.
• the central images 317 and peripheral 318, 319, 320 generated then form a series of discontinuous light patterns ( Figure 6).
• the convergent lenses are arranged on the outer face of the cover;
• the cache does not include optical means or the latter are different, for example consisting of Fresnel lenses or converging streaks;
• the filament lamp is of a different type, for example a halogen lamp; the filament of the lamp is oriented in a direction transverse to the optical axis of the device; and or
• the cover is made opaque with a neutral color paint, matte or metallic.

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Non-Portable Lighting Devices Or Systems Thereof (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=47628242

Family Applications (1)

Country Status (4)

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Citations (5)

Family Cites Families (1)

• 2012
  • 2012-11-28 FR FR1261323A patent/FR2998644B1/fr not_active Expired - Fee Related
• 2013
  • 2013-11-19 WO PCT/FR2013/052787 patent/WO2014083262A1/fr active Application Filing
  • 2013-11-19 EP EP13815038.8A patent/EP2926049B1/de not_active Not-in-force
  • 2013-11-19 CN CN201380059918.7A patent/CN104797880B/zh not_active Expired - Fee Related

Patent Citations (5)

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