Vehicular luminous laminated glazed roof, vehicle incorporating same and manufacture

Patent metadata

Field	Value
Publication number	US-10688924-B2
Application number	US-201716304515-A
Country	US
Kind code	B2
Filing date	May 24, 2017
Priority date	May 26, 2016
Publication date	Jun 23, 2020
Grant date	Jun 23, 2020

Abstract

An illuminated laminated sunroof for a vehicle includes a first glazing, forming the exterior glazing, with first and second main faces; a lamination interlayer made of a polymer material with a thickness e 1 of at most 1.8 mm; a second glazing forming the interior glazing, with third and fourth main faces, the second and third main faces being the internal faces of the laminated glazing, the lamination interlayer with blind or through-openings housing diodes, and collimation optics between the diodes and the third main face.

First claim

The invention claimed is:

1. A luminous laminated glazed roof for a vehicle, said roof comprising:
a laminated glazing including:
a first transparent glazing, made of mineral glass, with first and second main faces, which first transparent glazing is intended to be an exterior glazing;
a second transparent glazing made of mineral glass, with third and fourth main faces, which second transparent glazing is intended to be an interior glazing;
between the second and third main faces, which are internal faces of the laminated glazing, a transparent lamination interlayer film made of thermoplastic polymeric material, said lamination interlayer film having a fifth main face oriented toward the second main face and a sixth main face oriented toward the third main face; and

a set of inorganic light-emitting diodes, each inorganic light-emitting diode including at least one semiconductor chip, each inorganic light-emitting diode being able to emit in a direction of the third main face;

wherein said lamination interlayer is provided, between the fifth main face and the sixth main face, with one or more apertures that are through apertures or that form blind holes;
wherein each inorganic light-emitting diode is associated with a through aperture or a blind hole housing the inorganic light-emitting diode or wherein at least one group of said inorganic light-emitting diodes is associated with a common, through aperture or a common, blind hole housing the group of inorganic light-emitting diodes,
wherein the laminated glazing includes a set of collimating optics, each collimating optics being associated with one dedicated light-emitting diode that is in the aperture, or associated with the group of light-emitting diodes that are in the common aperture and each collimating optics is arranged between the second and third main faces, with at least one functional portion between a front surface of the inorganic light-emitting diode and the third main face, and
wherein the at least one or each collimating optics includes a planar functional textured plate that is partially textured in its thickness, and that has an entrance face oriented toward the second main face facing the diode and an exit face oriented toward third main face.

2. The vehicular luminous laminated glazed roof as claimed in claim 1 , wherein said texture forms motifs of sub-millimeter-sized height.

3. The vehicular luminous laminated glazed roof as claimed in claim 1 , wherein at least one or each collimating optics is a part that is monolithic or that is made up of a plurality of united pieces, which part is mounted on a diode carrier and/or mounted on the diode or on a diode of the group of diodes, said part including:
a functional portion of the collimating optics; and
a peripheral extension, extending in the direction of the second main face along the edge face of the inorganic light-emitting diode or of at least one of the inorganic light-emitting diodes of said group of inorganic light-emitting diodes.

4. The vehicular luminous laminated glazed roof as claimed in claim 3 , wherein the peripheral extension is a surround of the inorganic light-emitting diode or of the group of inorganic light-emitting diodes.

5. The vehicular luminous laminated glazed roof as claimed in claim 4 , wherein the peripheral extension comprises a housing for accommodating the inorganic light-emitting diode or the group of inorganic light-emitting diodes, a wall of the extension including stubs for holding the inorganic light-emitting diode or the group of inorganic light-emitting diodes.

6. A luminous laminated glazed roof for a vehicle, said roof comprising:
a laminated glazing including:
a first transparent glazing, made of mineral glass, with first and second main faces, which first transparent glazing is intended to be an exterior glazing;
a second transparent glazing made of mineral glass, with third and fourth main faces, which second transparent glazing is intended to be an interior glazing;
between the second and third main faces, which are internal faces of the laminated glazing, a transparent lamination interlayer film made of thermoplastic polymeric material, said lamination interlayer film having a fifth main face oriented toward the second main face and a sixth main face oriented toward the third main face; and

a set of inorganic light-emitting diodes, each inorganic light-emitting diode including at least one semiconductor chip, each inorganic light-emitting diode being able to emit in a direction of the third main face;

wherein said lamination interlayer is provided, between the fifth main face and the sixth main face, with one or more apertures that are through apertures or that form blind holes;
wherein each inorganic light-emitting diode is associated with a through aperture or a blind hole housing the inorganic light-emitting diode or wherein at least one group of said inorganic light-emitting diodes is associated with a common, through aperture or a common, blind hole housing the group of inorganic light-emitting diodes,
wherein the laminated glazing includes a set of collimating optics, each collimating optics being associated with one dedicated light-emitting diode that is in the aperture, or associated with the group of light-emitting diodes that are in the common aperture and each collimating optics is arranged between the second and third main faces, with at least one functional portion between a front surface of the inorganic light-emitting diode and the third main face, and
wherein at least one or each collimating optics includes:
a) a set of Fresnel prisms;

or
b) a prismatic array, a set of motifs of the array being prisms on an exit face side extending longitudinally in a direction parallel or making an angle of at most 10° to a longitudinal edge face of the roof.

7. The vehicular luminous laminated glazed roof as claimed in claim 6 , wherein the motifs are contiguous or essentially contiguous.

8. The vehicular luminous laminated glazed roof as claimed in claim 6 , wherein the prisms have a half angle at the apex ranging from 30 to 55°.

9. The vehicular luminous laminated glazed roof as claimed in claim 6 , wherein the Fresnel lens has a texture on a front face side.

10. The vehicular luminous laminated glazed roof as claimed in claim 1 , wherein a flexible diode carrier is pressed against or adhesively bonded to the second main face or the third main face, the carried diode(s) being reverse mounted, said diode carrier having a thickness e′2 that is at most 0.2 mm.

11. A luminous laminated glazed roof for a vehicle, said roof comprising:
a laminated glazing including:
a first transparent glazing, made of mineral glass, with first and second main faces, which first transparent glazing is intended to be an exterior glazing;
a second transparent glazing made of mineral glass, with third and fourth main faces, which second transparent glazing is intended to be an interior glazing;
between the second and third main faces, which are internal faces of the laminated glazing, a transparent lamination interlayer film made of thermoplastic polymeric material, said lamination interlayer film having a fifth main face oriented toward the second main face and a sixth main face oriented toward the third main face; and

a set of inorganic light-emitting diodes, each inorganic light-emitting diode including at least one semiconductor chip, each inorganic light-emitting diode being able to emit in a direction of the third main face;

wherein said lamination interlayer is provided, between the fifth main face and the sixth main face, with one or more apertures that are

Assignees

• Saint Gobain

Inventors

• Bauerle Pascal
• Berard Mathieu
• Delrieu Olivier

Classifications

• B60Q3/74 Primary

  for overall compartment lighting; for overall compartment lighting in combination with specific lighting, e.g. room lamps with reading lamps (general lighting mounted on specific fittings B60Q3/20; general lighting for mass transit vehicles B60Q3/43) · CPC title

• B32B17/10036 Primary

  comprising two outer glass sheets · CPC title

• F21V5/045

  the lens having discontinuous faces, e.g. Fresnel lenses · CPC title

• B60Q3/76

  for spotlighting, e.g. reading lamps (spotlighting on or for specific fittings B60Q3/20; spotlighting in mass transit vehicles B60Q3/44) · CPC title

• B32B17/10761

  containing vinyl acetal · CPC title