Vehicular luminous laminated glazed roof, vehicle incorporating same and manufacture
A laminated glazed roof includes a first glazing, forming an exterior glazing, with first and second main faces; a lamination interlayer made of polymeric material of thickness e1 of at most 1.8 mm; a second glazing, forming an interior glazing, with third and fourth main faces, the second and third main faces being the internal faces of the laminated glazing; and a set of diodes that are housed in through apertures or blind holes of the lamination interlayer.
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, the 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
at least one inorganic light-emitting diode, 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, each inorganic light-emitting diode being of sub-millimeter-sized thickness and being housed in a through aperture or a blind hole;
wherein each inorganic light-emitting diode is associated with a through aperture or a blind hole encircling the edge face of 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,
wherein a group of said diodes is associated with a common through aperture or a common blind hole and wherein a diode carrier has a back face pressed against or adhesively bonded to the second main face or the third main face, the inorganic light-emitting diodes being reverse-mount diodes, and a front face with the group of diodes makes contact with the fifth main face or the sixth main face, the inorganic light-emitting diodes being reverse-mount diodes.
2. 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, the 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 plurality 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, each inorganic light-emitting diode being of sub-millimeter-sized thickness and being housed in a through aperture or a blind hole;
wherein the lamination interlayer includes one or more sheets of thermoplastic polymeric material, and
wherein each inorganic light-emitting diode is associated with a through aperture or a blind hole formed in a main face of a first sheet of said one or more sheets of thermoplastic polymeric material so that the through aperture or blind hole receives a single one of the plurality of inorganic light-emitting diodes, said through aperture or blind hole encircling the edge face of the inorganic light-emitting diode, the luminous laminated glazed roof further including a flexible diode carrier to support said plurality of inorganic light-emitting diodes, said flexible diode carrier including a front face on which said plurality of inorganic light-emitting diodes are mounted, said front face extending along part of, and being positioned against, the main face of said first sheet of said one or more sheets.
3. The vehicular luminous laminated glazed roof as claimed in claim 2 , wherein each inorganic light-emitting diode is an electronic component equipped with a peripheral package encapsulating an edge face of the electronic component.
4. The vehicular luminous laminated glazed roof as claimed in claim 2 , wherein the flexible diode carrier is pressed against or adhesively bonded to the second main face or the third main face, the inorganic light-emitting diodes being reverse-mount diodes, said diode carrier being of thickness that is at most 0.15 mm, and wherein the diode carrier extends beyond the edge face of the laminated glazing, and a narrower electrical supply portion of the diode carrier extending beyond the edge face of the laminated glazing, or wherein the plurality of inorganic light-emitting diodes are on the second main face or are reverse mounted on the third main face.
5. The vehicular luminous laminated glazed roof as claimed in claim 4 , wherein the diode carrier includes a diode-bearing first portion that is apertured.
6. The vehicular luminous laminated glazed roof according as claimed in claim 4 , wherein the one or more sheets of thermoplastic polymeric material include a second sheet made of thermoplastic material between a back face of the diode carrier and the second main face or the third main face, the inorganic light-emitting diodes being reverse-mount diodes.
7. The vehicular luminous laminated glazed roof as claimed in claim 2 , wherein the through aperture or the blind hole is in a thickness of a PVB sheet that forms said first sheet.
8. The vehicular luminous laminated glazed roof as claimed in claim 2 , wherein the through aperture or the blind hole is in a thickness of an acoustic lamination interlayer that forms said first sheet.
9. The vehicular luminous laminated glazed roof as claimed in claim 2 , wherein the through aperture or the blind hole is in a composite material consisting of: a PVB sheet/transparent plastic film or a PVB sheet/transparent plastic film/PVB sheet, said plastic film a low-emissivity or solar control and/or heating functional coating.
10. The vehicular luminous laminated glazed roof as claimed in claim 2 , wherein the diode carrier includes a transparent film made of plastic material and an electrical circuit is provided with conductive tracks.
11. The vehicular luminous laminated glazed roof as claimed in claim 2 , wherein the diode carrier extends at least as far as to the edge face of the laminated glazing, and between a back face of the diode carrier and the second main face or the third main face, the plurality of inorganic light emitting diodes being reverse-mount diodes, is housed an adhesive that is impermeable to liquid water, of thickness of at most 0.1 mm.
12. The vehicular luminous laminated glazed roof as claimed in claim 2 , wherein the diode carrier essentially covers the second and third main faces.
13. The vehicular luminous laminated glazed roof as claimed in claim 2 , wherein the plurality of inorganic light emitting diodes form a reading light.
14. The vehicular luminous laminated glazed roof as claimed in claim 2 , wherein the plurality of inorganic light-emitting diodes forms an indicator light of a remote, touch on/off switch oriented toward the third main face.
15. A vehicle including at least one luminous laminated glazed roof as claimed in claim 2 .
16. A process for manufacturing the luminous laminated glazed roof as claimed in claim 2 , comprising:
cutting a single sheet of an acoustic and/or tinted PVB or a composite sheet consisting of a PVB sheet/film of functional plastic or of a PVB sheet/film of functional plastic/PVB sheet to form local blind or through apertures; and
assembling the laminated glazing, with the plurality of inorganic light-emitting diodes housed in the apertures.
17. The process for manufacturing the luminous laminated glazed roof as claimed in claim 16 , wherein each aperture is blind and is produced in one of the PVB sheets of the composite sheet consisting of a PVB sheet/plastic functional film bearing the functional coating/PVB sheet without touching said functional coating or the plastic functional film.
18. The process for manufacturing the luminous laminated glazed roof as claimed in claim 16 , wherein the plurality of inorganic light-emitting diodes are surface mount devices that are mounted on the diode carrier or toward the second main face if the diodes are reverse-mount diodes.
19. The process for manufacturing the luminous laminated glazed roof as claimed in claim 18 , wherein the sheet or the composite sheet is the first sheet and a thermoplastic second sheet is between the back face of the diode carrier and the second main face or the third main face if the plurality of inorganic light-emitting diodes are reverse-mount diodes.
20. A process for manufacturing the luminous laminated glazed roof as claimed in claim 19 , wherein, by reflow, the lamination interlayer with the one or more apertures that are wider than the plurality of inorganic light-emitting diodes spreads as far as to make contact with the edge face of the plurality of inorganic light-emitting diodes and wherein, for each through aperture, spreads as far as to be between said front surface of the package of the plurality of inorganic light-emitting diodes and the third main face without spreading as far as to make contact with the emitting face of the chip.