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
  • F21S43/50—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
  • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
  • F21S43/255—Filters
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F21—LIGHTING
  • 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
  • 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
  • F21S43/40—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

Definitions

• the present invention relates to the technical field of lighting and / or light signaling. It relates more particularly to a light device and / or signaling for a motor vehicle.
• each motor vehicle must be equipped with lighting devices in order to warn other road users of the presence and intentions of the driver. Examples include the red and moderate intensity position lights located at the rear of the vehicle to signal its position and stop lights also red, but stronger intensity to signal braking.
• These luminous devices have reflective surfaces for directing outwards and in a desired direction, the light beam emitted by a light source.
• Metal surfaces are preferred because of their high reflection coefficient, such as chromium or aluminum.
• These metallic surfaces are characterized by a light color in the light of day, which can generate an unwanted contrast with the color of the bodywork. This is particularly the case when the body is dark, modifying locally and pronounced aesthetics of the vehicle.
• the present invention aims to solve this problem by proposing a light device whose interior in the light of day, is of homogeneous hue and selected compared to current lighting devices.
• the present invention proposes a light device for a motor vehicle, comprising a light source, a reflective surface and a surface of color.
• the invention is characterized in that the color surface is of different color with respect to the reflecting surface, and in that the reflecting surface is arranged to, on the one hand, reflect a light beam emitted by the light source towards outside the light device and, secondly, allow an observer outside the light device to view at least a portion of the color surface through the reflecting surface.
• the invention thus proposes to put vis-à-vis the reflecting surface a different color surface, so as to modify in a desired manner the shade of at least a portion of the reflecting surface, visible by an observer of the luminous device.
• the color surface makes it easy to modify the hue of the reflecting surface without it being necessary for this purpose to carry out complex and expensive treatments of the reflecting surface.
• the presence of the color surface advantageously makes it possible to modify the hue of the reflecting surface, so that in daylight the interior of the luminous device is of chosen color and homogeneous or substantially homogeneous.
• the color surface may be chosen so that the hue of the reflecting surface is near or substantially the same as the body of a motor vehicle comprising said light device.
• the reflecting surface comprises at least a concave-shaped proximal portion and vis-à-vis the light source, for directing the light beam emitted by the light source towards the outside of the light device.
• proximal is meant a portion of the reflecting surface near the light source.
• depth means a direction substantially parallel to the exit direction of the light beam of the light device.
• the color surface is substantially parallel to the output direction of the light beam of the light device. This embodiment makes it possible to restrict the bulk of the luminous device in a direction substantially normal to the light beam and the color surface.
• the reflecting surface comprises at least a distal portion substantially parallel to the color surface. This embodiment also makes it possible to restrict the size of the light device in a direction substantially normal to the light beam and to the reflecting surface.
• the distal portion of the reflective surface is set back from the color surface.
• the color surface is positioned between the light source and the reflecting surface.
• the color surface is arranged so that the light source is not directly visible by an observer of the light device. The light device thus provides a visual impression of a cavity of homogeneous color, without any element likely to hinder this impression.
• the distal portion of the reflecting surface is in facing relation with at least a portion of the color surface.
• At least a portion of the color surface is vis-à-vis the proximal portion of the reflecting surface.
• the present invention favors the fact that the color surface is vis-à-vis the largest possible surface of the reflective layer.
• the reflecting surface has a portion of its surface set back from its proximal portion.
• This embodiment aims to promote a larger opening angle of the light beam coming out of the light device.
• the light source is arranged so that its light beam is substantially normal to the color surface, before reflection on the proximal part of the reflecting surface.
• the reflecting surface and / or the color surface is at least partially grained.
• grained is meant the presence of elements on the surface and / or at the level of said surfaces, promoting a greater diffusion of light.
• the color surface is dark in color, for example black or black.
• the invention is not limited to this single example of color, so that the color surface could be light in color, such as red, yellow or amber.
• the color surface may comprise several distinctive colors so as to form a desired visual impression at the level of the reflecting surface.
• the light source is chosen to indicate to other users of the road, the braking and / or the position of a motor vehicle provided with said light device.
• the invention also relates to a traffic light comprising a light device described above, and also to a motor vehicle comprising at least one such traffic light.
• Figure 1 shows a schematic view of a cross section of a lit light device according to the invention
• Figure 2 shows a schematic view of a cross section of the light device illustrated in Figure 1, day and off.
• the invention proposes a light device whose interior in the light of day, is of homogeneous hue and chosen with respect to the current lighting devices.
• FIG. 1 illustrates an exemplary non-limiting embodiment of a light device 2 according to the invention.
• the light device 2 comprises a light source 4 held on a plate 6.
• the light source 4 is arranged so that its light beam 8 is substantially parallel to the plate.
• the plate 6 also serves as a support for an optical box 10 comprising an upper element 12 and a lower element 14. It should be noted that the terms "upper” and “lower” are chosen arbitrarily, and therefore do not limit the mode embodiment described here.
• the upper element 12 of the optical housing 10 is held at the plate 6 via an appendix 16A and known means.
• the upper member 12 includes a proximal portion 18A, arranged opposite the light source 4, and a distal portion 20A extending to an opening 22 of said housing.
• the proximal portion 18A is covered with a reflective layer 24, at an inner face 26A vis-à-vis the lower member 14 of the optical housing.
• the reflective layer 24 thus forms a reflective surface on which the light beam 8 emitted by the light source is reflected towards the opening 22.
• the inner face 26A of the proximal portion 18A is concave.
• the plate 6 has a hole 28 to allow the passage of an end of the proximal portion 18A, to facilitate the positioning of the center of curvature of the inner face 26A at the light source 4
• the presence of the hole 28 in the plate 6 makes it possible in particular to restrict the depth of the light device.
• the depth means a dimension substantially parallel to the direction of the light beam 8 coming out of the light device.
• the upper element 12 of the light device has a shoulder 30 so that its inner face 26A, at its distal portion 20A, is set back relative to its proximal portion 18A.
• the shoulder 30 delimits the proximal portion 18A of the distal portion 20A of the upper member 12.
• the height of the light device 2 can be adapted independently of the size of its proximal portion 18A.
• the term “height” is meant a dimension substantially normal to the depth of the light device, passing through the upper element 12 and the lower element 14. The height of the light device can then be advantageously chosen independently of the function of the light. illumination of the device itself, to provide embodiments that can meet different expectations, including aesthetic considerations.
• the distal portion 20A is also covered at its inner face 26A by a reflective layer 24.
• the reflective layer 24 is a metal deposit of chromium or aluminum type, forming a reflecting surface at the inner face 26A of the upper element 12.
• the lower element 14 of the optical housing 10 is also maintained at the plate 6, via an appendix 16B and known means.
• the lower element 14 of the optical housing comprises a proximal portion 18B, arranged as its name indicates near the light source 4, and a distal portion 20B extending to the opening 22 delimited by the element upper 12 and the lower element 14 of the optical housing 10. It should be noted that in Figures 1 and 2, the opening 22 is closed by a lens 32 without this being limiting of the invention.
• the inner face 26B of the lower element 14, situated opposite the upper element 12, is of plane or substantially flat surface.
• the inner face 26B is covered with a color layer 34, so as to have a different color surface with respect to the reflective layer 24.
• the color surface 34 is dark or black in color.
• the inner face 26B is parallel or substantially parallel to the direction of exit of the light beam 8 of the light device, so as to face the layer 24.
• the lower element 14 is arranged so that the light source is flush with or is slightly set back from the color surface 34, so as not to be visible by an observer of the light device 2.
• the color layer 34 is illuminated by the daylight 36, its hue then reflects on the reflecting layer 24 or reflective surface. It should be noted that the observer can also see the color surface through the reflective layer 24, especially at the proximal portion 18A of the upper element 12. As a result, an observer looking at daylight The inside of the light device 2 through the aperture 22, perceives a relatively uniform shade color at the inner faces 26A, 26B of the upper member and the lower member.
• the invention thus makes it possible to easily and economically modify the hue of the reflective surface of the upper element 12, without it being necessary for this purpose to carry out complicated and expensive treatments at the level of the reflective layer.
• the color layer 34 or color surface makes it easy to change the appearance of the hue of the interior of the optical package 10 when the light device is turned off.
• the reflective layer 24 may be treated to promote greater light diffusion to provide a more homogeneous light device.
• the reflecting surface may be grained.
• the hue of the color surface 34 may be close to or similar to that of the beam of light emitted by the light source 4.
• the color surface 34 may have several different hues in order to form a more or less complex pattern.
• the hue of the color surface may vary gradually in the direction of the depth of the optical box.

Landscapes

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

Applications Claiming Priority (2)

Publications (2)

Family

ID=61224126

Family Applications (1)

Country Status (4)

Families Citing this family (2)

Family Cites Families (5)

• 2017
  • 2017-12-18 FR FR1762343A patent/FR3075311B1/fr active Active
• 2018
  • 2018-12-12 WO PCT/FR2018/053234 patent/WO2019122612A1/fr unknown
  • 2018-12-12 PL PL18833476.7T patent/PL3728940T3/pl unknown
  • 2018-12-12 EP EP18833476.7A patent/EP3728940B1/de active Active

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