ILLUMINATED LAMINATED GLASS ELEMENT FOR VEHICLES, VEHICLE WITH SUCH AN ILLUMINATED LAMINATED GLASS ELEMENT

Abstract

The invention relates to an illuminable laminated glass element (100) of a vehicle with an optical insulating coating (5) on the back face of a transparent non-fluoropolymer carrier film (5') within a lamination interlayer which includes a top interlayer layer (31), the carrier film having a blur value H1 which is in a range of 0.5% to 2%, and the glass element further comprising a light redirection element (8), called the top redirection element, capable of redirecting light into the carrier film.

Description

Title of the invention: ILLUMINABLE LAMINATED GLASS ELEMENT FOR VEHICLES, VEHICLE WITH SUCH AN ILLUMINABLE LAMINATED GLASS ELEMENT

[0001] The present invention relates to an illuminable laminated glazing for vehicles, in particular road vehicle glazing.

[0002] It is known to have multifunctional road vehicle roofs that can be illuminated by lighting, for example, light-emitting diodes.

[0003] With regard to vehicle roof lighting, light-emitting diodes have been used for the glazed roofs of road vehicles, in particular panoramic laminated roofs with LED lighting as described in document WO2010049638. The light emitted by the diodes is introduced edge-on into the inner glazing forming a guide, the light being extracted from the glazing by a diffusing layer on the glazing.

[0004] To improve light extraction, document WO2015118279 proposes a luminous laminated vehicle roof incorporating within the thermoplastic lamination interlayer a fluoropolymer film of at least 600nm thickness, with a refractive index n2 at 550nm, the inner glass being a guide layer with a refractive index ni, nl-n2 being at least 0.08, the fluoropolymer film then forming an optical insulator between the inner glass and the outer glass.

[0005] The present invention sought to develop a laminated vehicle glazing, alternative and even opening up the range of applications.

[0006] To this end, the present invention relates to an illuminable laminated element for a vehicle, particularly a road vehicle (fixed or opening, such as a roof, side window, particularly rear window, rear window, windshield, particularly for cars but also trucks, public transport such as buses, coaches, etc.), comprising: - laminated glazing, preferably curved, transparent (at least in one clear (central) pane), - a first sheet (which may be curved), transparent, made of mineral glass (clear or tinted, in particular grey or green), intended to form the outer glass, with a first main face called face Fl (intended to be oriented towards the outside of the vehicle), a second opposite main face called face F2 (possibly coated with a transparent functional coating (in the clear part of the glass)) and a first slice, (in particular a transparent functional coating with a thickness of at most Ipm or 200nm, for a road vehicle and even a car with a thickness preferably of at most 4mm, or even at most 2.5mm, even at most 2.2mm - in particular 1.9mm, 1.8mm, 1.6mm and 1.4mm - and even at least 0.7mm thick, for example with a refractive index nv of at least 1.5 in the visible range), the first sheet being intended to form the outer glass,- a polymer laminate interlayer (transparent (at least in the clear glass)) comprising an upper (adhesive) interlayer layer (F2 face side), in particular with a refractive index n3a in the visible, in adhesive contact with the second face F2 or with a functional transparent coating on the face F2 (in the clear glass, in particular a functional transparent coating with a thickness of at most Ipm or 200nm) (and preferably a lower (adhesive) interlayer layer on the F3 face side), - a second transparent sheet (which may be curved), made of mineral glass or polymer, with a third main face F3 and a fourth main face F4 opposite (preferably bare or even coated with a functional (transparent) coating) and a second layer with a refractive index ni in the visible of at least 1.5, (in particular a functional coating with a thickness of at most Ipm or 200nm, second sheet preferably made of mineral glass (clear and even extra clear),third face F3 facing outwards from the vehicle and fourth face F4 facing into the passenger compartment, in particular with a thickness of at least 0.7mm (to facilitate light guidance), possibly less than that of the first sheet of glass, even by no more than 2.2mm - in particular 1.9mm, 1.8mm, 1.6mm and 1.4mm - or even by no more than 1.3mm or no more than 1mm, the total thickness of the first and second sheets preferably being strictly less than 5 or 4mm, even 3.7mm), and , the glazed element comprising a transparent optical insulating layer, with a refractive index n2 in the visible range, optical insulating layer of submillimeter thickness Ei and of at least 400nm, and it comprises a coated substrate which includes: - a transparent film, called carrier film, made of a polymer, preferably thermoplastic, distinct from a fluoropolymer, with a main front face Fa oriented towards face F2 and an opposite main rear face Fb, of submillimeter thickness Ef, of at least 50 µm and preferably of at most 300 µm or 200 µm, the carrier film having a blur value H1 which is in a range from 0.5% to 2%, preferably of at most 1%, and preferably the carrier film having a refractive index n0 greater than n3a, or even preferably n0-n3a, of at least 0.1 in the visible, - the optical insulating layer which is an optical insulating coating (made of a material comprising a matrix preferably distinct from a fluoropolymer), on the rear face Fb, and a slice, n2 is less than ni, the difference in refractive indices nl-n2 being at least 0.06 in the visible, the coated substrate being laminated between the second and third faces F2 and F3, and is between the upper interlayer and a lower interlayer (with a refractive index n3b in the visible range, in particular equal to n3a), in adhesive contact with the third face F3 or with a functional transparent coating on the face F3, in particular the coated substrate having a given surface S preferably, in particular for a fixed glazing (roof, side) completely occupying the visible area and extending beyond the visible area under a peripheral internal masking layer (preferably forming a peripheral frame for a fixed glazing) delimiting the visible area, and it comprises: -in particular at a first periphery of the coated substrate (near a first edge of the coated substrate), a light redirection element, called the upper (peripheral) redirection element, preferably offset from the viewable area, capable of redirecting light, preferably emitted from the side of face F4, into the carrier film via the front face Fa (so as to guide this light while diffusing light), the upper redirection element being a prismatic reflector element comprising reflector prisms oriented towards the second face F2 or towards the third face F3, preferably the upper redirection element at least partially on the front face Fa, against or glued to the front face Fa (bare or coated with a layer, for example transparent), -means of light extraction, in particular arranged locally or discontinuously, between the optical insulating coating and the F4 face, in particular comprising a diffusing coating.

[0007] Surprisingly, the inventors have shown that the blur of the carrier film makes it possible to provide a soft, even homogeneous, luminous background. The blur must not be too high in order to distribute the light over the surface and maintain guided rays as they move away from the injection zone. In particular, a blur value of at most 2%, preferably at most 1%, provides more homogeneous diffuse lighting, preferably over the entire surface and even the clear glass, and allows the desired level of visibility from the outside to be maintained in the off (not illuminated) state, particularly in road vehicles. When the carrier film has a length in the direction of light propagation of at least 40 cm, the injection means can be duplicated by adding another upper redirecting element (and another first light source) opposite the first edge, particularly for fixed glazing (roof, side window).

[0008] It is recalled that the level of diffusion of a substrate can be characterized by the value of the blur (or blur factor), measured in a known way by a blur measuring device (Haze in English), also called a "Haze meter".

[0009] According to one characteristic, the blur H1 of the carrier film is at most 1% and even at least 0.7%.

[0010] Preferably, the coated substrate has an edge which is masked from the outside of the glazed element (or even from the inside), in particular under a peripheral internal masking layer delimiting the view.

[0011] According to one feature, the coated substrate completely occupies a clear view of the glazed element, and preferably the coated substrate extending beyond the clear view under a peripheral masking layer delimiting the clear view, forming a peripheral frame in particular for fixed glazing or at least three peripheral bands in particular for side opening glazing.

[0012] The light transmission of the carrier film can be at least 80% or 85%.

[0013] The carrier film can be a polycrystalline film (to generate the blur).

[0014] The carrier film can be a thermoplastic polymer or even a cross-linked polymer, in particular : - polyester, such as polyethylene terephthalate PET, poly(butylene terephthalate) PBT, poly(ethylene naphthalate) PEN, - polyimide, polyamide.

[0015] Preferably, the carrier film is a polyester film and even PET, preferably with an Ef of no more than 300 µm and even no more than 200 µm. The PET is particularly clear. Its light transmission can be at least 80% or 85%.

[0016] The extraction means are arranged locally or discontinuously, for example, comprising one or more extraction patterns (discrete, geometric, etc.) that are disjoint or interconnected—grid-shaped, etc.—and an extraction layer with openings, notably forming a logo. In particular, the extraction means comprise a diffusing coating on the lower laminated interlayer or on the optical insulating coating, facing the carrier film (at the surface S of the carrier film), preferably having a coverage rate of at most 40% or 30% of the surface S, extraction means capable of extracting guided light (by total internal reflection), particularly in the second sheet.

[0017] According to one feature, the optical insulating coating comprises a crosslinked polymer matrix with said index n2, preferably of at most 1.42, matrix preferably among polyacrylate-based polymers with fluorinated function, in particular urethane acrylate or fluorourethane acrylate or fluorosilicone acrylate and / or in that the optical insulating coating comprises a matrix with a refractive index n2m greater than n2 and less than ni, and preferably with n2m of at most 1.48 and n2 preferably of at most 1.42, and comprising (nano)poroses and / or (nano)particles of low index, of refractive index less than ni, in particular hollow, preferably of size of at most 300nm.

[0018] According to one feature, the matrix of the optical insulating coating is organic, in particular crosslinked polymer or thermoplastic, in particular selected from polymer based on polyacrylate, polyepoxides, polyvinyl acetate, polyester, polyurethane, PVB, or the matrix is ​​mineral in particular silica.

[0019] According to one feature, the difference in refractive indices nl-n2 is at least 0.08 in the visible range. According to one feature, the thickness Ei is at least 500 nm, and even at least 800 nm.

[0020] According to one feature, the carrier film is set back from the first or second slice by at least 10mm, and in particular the thickness Ef of the carrier film is at least 0.2mm and the element includes an intermediate frame layer, framing the perimeter of the coated substrate and in particular between the faces F2 and F3.

[0021] According to one feature, the glazed element comprises another light redirection element, called the lower redirection element, capable of redirecting light from the side of face F4 into the second sheet. The lower redirection element is transparent on the side of face F4 or reflective on the side of face F3. In particular, the lower redirection element is reflective and optically coupled with a second light source, preferably distinct from the first light source, on the third side of face F3. In particular, the lower redirection element is a prismatic reflector element comprising reflector prisms oriented towards the third face F3 or towards the second face F2, or is a transparent light redirection element, on the fourth main face F4, possibly forming a deflector, a prism, or comprising (micro)prisms.

[0022] According to one configuration, the lower redirecting element is at the periphery of a so-called reference edge which is - the first edge, the lower redirecting element being opposite the rear face Fb (outside the injection zone of the first light source), against the face F3 and bonded to the face F3 by a local adhesive or the lower interlayer or against and bonded to the face Fb and on the optical insulating coating, - an edge adjacent or opposite to the first edge, the lower redirecting element being, - at least partially opposite the optical insulating coating, - or at most 4mm away, preferably at most 1mm away, from the optical insulating coating.

[0023] In a particular example, the glazed element includes another upper redirecting element at the periphery of an edge opposite the first edge, capable of redirecting light, preferably emitted from the side of face F4, into the carrier film via the front face Fa (so as to guide the light while diffusing light), the upper redirecting element being a prismatic reflecting element comprising reflecting prisms oriented towards the third face F3 or towards the second face F2, in particular the upper redirecting element being at least partially on the front face Fa, against or bonded to the front face Fa,) and even another lower redirecting element on the periphery of an edge opposite to the reference edge, capable of redirecting (for guidance) into the second sheet a light coming from the side of face F4, the other lower redirecting element being transparent on face F4 or reflective on face F3.

[0024] In configuration a), the reflecting prisms of the upper redirecting element are wholly or partially offset from a first edge of the coated substrate, in particular from the longitudinal or lateral edge, especially the reflecting prisms being in adhesive contact with the lamination interlayer. The reflecting prisms may be oriented towards the second face F2 or towards the third face F3. Depending on the orientation of the prisms, the upper redirecting element may be in adhesive contact with a lower interlayer layer or a peripheral laminate interlayer frame layer, or even an upper or additional interlayer layer if an electrically controllable device is inserted into the laminated glass element.

[0025] In particular, the upper redirecting element is a prismatic film partially against or bonded to the front face Fa of the coated substrate, preferably by at least 2 mm, and the upper redirecting element protrudes from the first edge by at least 3 mm and preferably by no more than 10 mm. This is preferably also the case for another upper redirecting element on the opposite edge.

[0026] In a configuration b), and the reflecting prisms, are in a marginal area of ​​the coated substrate on the front face Fa, in particular along a longitudinal or lateral edge of the coated substrate, the optical insulating coating being absent from said marginal area.

[0027] The upper redirecting element is a prismatic film against or glued to the front face Fa of the coated substrate.

[0028] According to one feature, the upper redirecting element (like the lower redirecting element) is a prismatic film, optionally comprising a substrate and a textured layer or comprising a textured film.

[0029] The redirecting element (upper and / or lower) may comprise a prismatic (textured) film (with a smooth (non-textured, non-functional) main surface and a textured, functional opposite surface), flexible and therefore curved to adapt to the curvature of the laminated glazing. In particular: - a partially structured transparent polymer film forming (micro)prisms - and with a reflective coating (metallic, silver, aluminum) forming a conformal deposit; - or a transparent (planar) polymer film, forming a substrate, with on a main surface a transparent (polymer) layer with an arrangement of (micro)prisms and with a reflective coating forming a conforming deposit.

[0030] For example, a prismatic film comprises a transparent thermoplastic (polymer) film, for example, based on polyethylene terephthalate (PET), on which transparent prisms are formed from a polyacrylate (a resin crosslinked, for example, by UV). A partially textured layer is preferred. A metallic layer (conformal coating), for example silver or aluminum, is added to the prismatic film. The transparent prismatic film preferably has a light transmission of at least 70%, more preferably at least 80%, and most preferably at least 90%.

[0031] The upper redirecting element, comprising a textured film (in particular a polymeric or prismatic film) or a substrate film (in particular a polymeric film) and a textured or prismatic layer, as well as a reflective coating, can be bonded to the coated substrate (for the lower redirecting element, to the third face F3) directly or via at least one adhesive, or held by suction (strong interaction), in particular by the pressure of the assembly. For example, the redirecting element is placed on the front face (the third face F3 for the lower redirecting element), and after the air is drawn in, a suction effect occurs.

[0032] The prisms of the lower and / or upper redirecting element can be of a height of at least Ipm and preferably of at most 100 or 50pm or 30pm.

[0033] The film, in particular prismatic polymer or substrate of the microprisms (prismatic layer, organic for example) can be less than 200pm, 100pm, 80pm or 50pm and even at least 30pm.

[0034] Preferably the prismatic film has a total thickness of at most 500pm or even 400pm or 200pm or 100pm.

[0035] Preferably, the upper and / or lower prismatic redirecting element (in particular comprising a polymer film and prisms) is preferably less wide than the width of an internal masking layer for a fixed glazing of at least 1 cm and, in particular, of a length similar to that of the linear (custom-made) light source. It could be a rectangular strip with rounded corners, for example.

[0036] The microprisms (equipped with the reflective coating) act in particular as reflective prisms and reflect the light that strikes them in a direction which depends on the angle of inclination of the prism surfaces and the angle of incidence of the light on the prisms.

[0037] For example, a prismatic film comprises a transparent thermoplastic (polymer) film, for example, based on polyethylene terephthalate (PET), on which transparent prisms are formed from a polyacrylate (a resin crosslinked, for example, by UV). A partially textured layer is preferred. For the reflective prismatic film, a metallic layer (conformal coating), for example silver or aluminum, is added.

[0038] The transparent prismatic film preferably has a light transmission of at least 70%, more preferably of at least 80%, very preferably of at least 90%.

[0039] Microprisms, for example, have a triangular cross-section. Prisms, for example, are contiguous.

[0040] For example, the total thickness of the redirecting element (lower as well as upper) is at most 100pm (in particular at least 30 or 50pm) and even at most the thickness of the lower interlayer and / or the coated film (substrate).

[0041] In some embodiments, the reflecting prisms of the upper and / or lower prismatic reflecting element have an inclined face (redirecting, therefore receiving and redirecting the light) forming an angle of 30° to 50° with the smooth face of the prismatic reflecting element (with the plane of the prismatic reflecting element). The inclined surfaces of the prisms are, in particular, formed in the micrometer range. The length of the inclined faces (in cross-section) of the prisms is, for example, preferably from 10 µm to 250 µm, and in particular preferably from 20 µm to 100 µm, for example approximately 30 µm. And / or the prisms may have a height of at least 1 µm and preferably of at most 100, 50, or 30 µm.

[0042] In a preferred embodiment of the invention, the upper and / or lower prismatic element is a flexible polymer (or metallic) film. The film, in particular the prismatic polymer or prism substrate (prismatic layer, organic for example), may be less than 200 µm, 100 µm, 80 µm, or 50 µm thick, and even at least 30 µm thick. If the reflective prisms are oriented towards the third face F3, the substrate film may be tinted and even opaque or opacified. For example, it may be a tinted or even opaque (black) PET supporting the reflective prisms. Preferably, the reflective prismatic element has a total thickness of at most 500 µm, or even 400 µm, 200 µm, or 100 µm, and even at least 30 µm.

[0043] In one embodiment of the invention, the upper and / or lower prismatic reflector element is a rigid (micro)textured plate, in particular made of glass or plastic with a reflective layer, or a metal plate, for example a (micro)textured aluminum plate.

[0044] The glazed element may be available with or without light sources. Depending on one characteristic, the glazed element comprises - a first light source on the F4 face side, in particular a first set of light-emitting diodes, optically coupled to said upper redirecting element, in particular opposite the upper redirecting element,

[0045] - possibly another first light source on the F4 face side, in particular another first set of light-emitting diodes, optically coupled audit other higher redirecting element, particularly with respect to the other higher redirecting element, - possibly another second light source optically coupled to the second sheet of glass, in particular another second set of diodes, (another second light source opposite the second light source).

[0046] - a second light source optically coupled to the second sheet of glass, including a second set of diodes, second light source on the side of the first edge, on an opposite edge or on an edge adjacent to the first edge.

[0047] The glazed element may include a first optical module carrying the first light source or even the second light source. For example, the first optical module may be fixed to a peripheral seal, a profiled seal of the glazing (polymer encapsulation, etc.) and / or to face F4 (outside the light injection zones). The first optical module may have a face oriented towards face F4 that is substantially horizontal. There may be two, three, or four optical modules.

[0048] In one or more embodiments, the glazed element comprises the first (elongated) light source, in particular an array of light-emitting diodes (diode strip), preferably having a divergence of no more than 8°, positioned on the fourth principal face F4, for example facing the upper light redirection element. The light source (each diode) has a principal emission direction relative to a normal to the fourth principal face F4.

[0049] In an embodiment with the first light source and a prismatic reflector film at the top, the angle of the principal emission direction of the light source (diodes) with the normal to the plane of the glazing (i.e., the angle of incidence) is preferably at most 30° and even 25°, preferably with a divergence of at most 8°. In particular, the principal emission direction with respect to a normal to the fourth principal face F4 emits a cone of light with an angle in the range of 22° ± 4°, or even in the range of 22° ± 2°. Preferably, a collimator can be inserted between the first light source and face F4. The first light source can be oblique to face F4 with respect to the plane of the glazing. Reflecting prisms can have an inclined (redirecting) face with an angle of 35° to 50°, in particular 40° to 50° with the smooth face (opposite to the textured face).

[0050] In another embodiment with the first light source and a superior prismatic reflector film, the angle of the principal emission direction of the first light source with the normal to the plane (i.e., the angle of incidence) is preferably 0° ± 5°, preferably with a divergence of at most 8°. In particular, the principal emission direction with respect to a normal to the fourth principal face F4 emits a cone of light with angles in the range [0° ± 4°], or even in [0° ± 2°]. Preferably, a collimator can be interposed between the first light source and face F4. The first light source can be (approximately) parallel to the plane of the glazing. Reflecting prisms can have an inclined (redirecting) face with an angle of 30° to 40°, in particular 35° to 40° with the smooth face.

[0051] Preferably, a collimator can be interposed between the first light source and face F4. In the simplest case, the collimator is a type of converging lens, with the first light source preferably positioned at its focal point. The collimator can be made of glass or transparent plastic, in particular polycarbonate (PC) or polymethyl methacrylate (PMMA). The collimator is preferably attached to an optical module carrying the first light source. If the first light source is designed as a (linear) arrangement of light-emitting diodes (LEDs), a separate collimator can be provided for each LED. However, it is preferable to use a common collimator for all the LEDs. For example, in the case of a linear LED array, a strip-shaped collimator with a length at least equal to the length of the LED array can be used.The exit face of the collimator can be approximately horizontal.

[0052] According to one feature, the light extraction means comprise a diffusing coating, preferably transparent, with a binder and diffusing particles, the binder preferably having a refractive index n5 greater than or equal to ni (or n3a), in particular of at least 1.48, in particular the lower interlayer or the second sheet is the substrate of the diffusing coating, in particular possibly in contact with the optical insulating coating on the Fb face. In one example, the binder of the diffusing coating is organic, in particular a cross-linked polymer, selected from polyacrylate-based polymers, polyepoxides, polyvinyl acetate, polyester, and polyurethane. In another example, the binder of the diffusing coating is a polyacrylate polymer, and the binder of the optical insulating coating is a polyacrylate polymer, in particular a polyacrylate with a fluorinated function and / or with low-index nanoparticles or nanoporosity.

[0053] In a particular embodiment, the laminated glass element comprises, between the upper interlayer and the lower interlayer, above said optical insulating coating, an electro-controllable device, in particular with variable diffusion and / or tint, comprising an electroactive layer between a front electroconductive support on the second face F2 and a rear electroconductive support on the third face F3, or a photovoltaic device and preferably in that the lamination interlayer comprises an additional interlayer, the coated substrate being sandwiched between the additional interlayer and the lower interlayer.

[0054] According to one feature, at least the first sheet has a first irregular lower longitudinal edge, near a first edge of the coated substrate, having at least one first protruding portion referred to as the first overhang. The first light source, the lower redirecting element, and the second light source extend below the lower visibility limit of the laminated glass element, at a distance from a glazing fixing zone intended to be coupled to a window-lifting system, this fixing zone being connected to the first overhang. The laminated glass element is, in particular, a side-opening glazing unit.

[0055] In a particular example, the second sheet is of reduced size, the edge of the second sheet, called the second edge, is straight, in particular horizontal, and below the lower limit of visibility of the glazing, the second light source is under face F2 along the second edge for optical coupling by the second edge or the second sheet has a second irregular lower longitudinal edge having at least one protruding portion, called the second overhang, opposite said first overhang, the first light source or even the second light source is on face F4. The longitudinal source is more than 5cm from means of light extraction in the clear of the glazing.

[0056] Below the lower visibility limit, the "height" of the glazing may vary longitudinally between the rear and the front, said height being between the visibility limit and the lower longitudinal edge. For example, this height is at least 10 cm and at most 80 cm, or even 40 cm to maintain uniformity.

[0057] The irregular edge has, for example, a centrally curvilinear section forming a downward-oriented concave profile and the fixing areas are peripheral.

[0058] The glazed element may be a roof or a side window, particularly an opening one (of a vehicle, particularly a road vehicle). If the glazed element is an opening side window, any redirecting element and any light source must be below the lower visibility limit. If the glazed element is a fixed side window or a roof, any redirecting element and any light source must be below the internal masking layer.

[0059] An opening side window is linked to a window regulator (for the mobility of said window in vertical translation relative to a door of said vehicle). A side window drive device is selectively controlled by means of an element, such as a crank or a button, to move the window vertically relative to the door, respectively between a closed position and at least one open position.

[0060] To ensure the connection of a side window with the drive device housed in the door, a distinction is generally made between a first type of connection implementing a clamping assembly and a second type of connection implementing a screwing assembly.

[0061] In the case of a clamping connection, the connecting means comprise, for example, a Y-shaped connecting piece or pair of Y-shaped connecting pieces, in other words, a glass holder, notably fixed to the glazing by bonding. Each connecting piece (called a "holder" in English) cooperates with each of the faces of the glazing, respectively inner and outer, said connecting piece being arranged in the vicinity of the lower edge located below the lower limit of visibility, i.e., in the non-visible area concealed within the door, in order to connect the side glazing to the drive device during movement.

[0062] In the case of a screw connection, the side glazing has at least one (protruding) fixing zone, in particular central, sometimes two (protruding) fixing zones, in particular peripheral, which are made in the non-visible area located below the lower limit of visibility.

[0063] In laminated glazing used as side glazing, a particular type of glazing called "asymmetric" is distinguished, which is characterized by the fact that at least the shorter inner glass sheet does not cover the other glazing sheet(s) at the fixing area.

[0064] Thus, an asymmetrical glazing unit comprises an inner pane of glass that is not traversed by any means of connection between the glazing and the drive device, since said inner pane of glass does not include any fixing holes. The fixing area(s) include at least one fixing hole provided through the glazing. The fixing hole opening onto both faces of the glazing is intended to receive connecting means, said connecting means generally comprising an axis connected to the drive device, for example, a threaded rod. Consequently, from a mechanical standpoint, the inner pane of glass in such an asymmetrical glazing unit is connected to the drive device only via the other panes of glass, that is to say, indirectly via the interlayer due to the assembly of the constituent panes of the laminated glazing.

[0065] To do this, the opening side glazing can have one or more holes partially or totally passing through the glazing, one or more attachment gutters or glass holders, one or more rails, or slides.

[0066] The opening side glazing may include at least one and preferably at least two glazing doors having, for example in cross-section, a substantially inverted U-shape or even an inverted h-shape. Parallel walls of the h-shape enclose the glazing in its lower part, and a tail is then substantially in line with the glazing.

[0067] This h-shaped glass carrier allows the transmission of forces between the glass carrier and the glass over a large area corresponding to the sum of the inner areas of the parallel walls; however, it is perfectly possible to use a simple plate, this plate having for example at least two parts: a first part for cooperation with the glass and a second part for cooperation with the drive mechanism (raising / lowering) of the glass.

[0068] Since the glazing is curved, the parallel walls and / or the tail can be curved.

[0069] The glass carrier(s) is / are, for example, glued using an adhesive, for example, polyurethane, and then "fitted" onto the glazing, that is to say, it / they is / are positioned so that the glazing is present in the U-shape, with or without a stop, by inserting a plastic insert material, such as polypropylene, between said parallel walls and the glazing. In one variant, in-situ injection of adhesive material is proposed to form the insert material, which is made of thermoplastic hot-melt resin, for example, based on polyamide. The glass carriers used are, for example, metallic, made of aluminum alloy.

[0070] For an opening side window, any redirecting element and any source of light are outside the visibility limit of the window (in door etc).

[0071] According to one feature, the laminated glazed element comprises at least one of the following functional elements: - an internal, peripheral, opaque masking layer between the second face F2 and the third face F3, and even covering the perimeter of the optical insulating coating and even the coated substrate, particularly in contact with the second face F2, defining a clear view, - an inner, peripheral, opaque masking layer on the fourth face F4, in particular congruent with or narrower than the width of the inner masking layer, - an internal peripheral opaque masking element, at the level of the upper redirecting element and / or a lower redirecting element (the substrate of the redirecting element is particularly opaque if the reflecting prisms are oriented towards the F3 face, or fixed with black glue, etc.), -an internal coating, reflecting infrared radiation, such as a stack of silver layer(s), on the second face F2 on the first, clear sheet, or on an additional film, particularly a polymer, - an external coating, reflecting infrared, such as a transparent conductive oxide layer stack, on the fourth face F4 of the second mineral glass sheet.

[0072] The upper redirecting element is for example at most 100 mm from the clear glass and / or preferably at least 10 or 20 mm.

[0073] The slice of the upper redirecting element can be at least 10mm away from the slice of the first leaf and even at least one of the following values: 15mm, 20mm, 25mm, 30mm.

[0074] An internal opaque element of the same or similar color to the internal opaque masking layer (optional), in particular black, is preferred.

[0075] This internal opaque element, preferably black, is for example an enamel or an ink.

[0076] This internal opaque element may preferably have a light transmission of less than 5%, more preferably less than 2%, 1% or 0.5% or even zero.

[0077] An example of opaque PVB containing black pigments is the product called RB 17830000 Vanceva absolute black® sold by Saflex.

[0078] The laminated glass element (in particular the coated film) may include a protective transparent layer (film or coating), notably polymeric (thermoplastic or cross-linked polymer), with a refractive index greater than n2, a submillimeter thickness, and even a maximum of 100 µm, covering the optical insulating coating in contact with the lower interlayer and even with a diffusing coating forming light extraction means. In particular, it protects the optical insulating coating comprising (nano)porosity and / or low-index (nano)particles, particularly hollow, porous (silica, etc.). The protective transparent layer is a mechanical protection in contact with the lower interlayer and even with a functional diffusing coating, forming the light extraction means (discontinuous or local).

[0079] Preferably, the light extraction means occupy at most 50% or 40% of the glazing (roof, side glazing, etc.), or of the clear glass area, or of the lower interlayer. For example, the light extraction means (such as a diffusing coating) are on face F3 or the F3 side of the lower thermoplastic (PVB) interlayer and preferably occupy at most 40% or 30% of the roof, or of the clear glass area, or of the lower interlayer.

[0080] According to one feature, the illuminateable laminated vehicle glass element comprises (in particular on the outer face of the second sheet, on the fourth face F4) a transparent, single-layer or multi-layer infrared-reflective coating (low emissivity); the infrared-reflective coating comprises at least one electrically conductive functional layer, for example, of a transparent conductive oxide, in particular ITO. The infrared-reflective coating preferably comprises a dielectric sublayer, in particular silicon (oxy)nitride, and preferably comprises a dielectric toplayer, in particular silicon (oxy)nitride.

[0081] According to one feature, the vehicle's illuminateable laminated glass element has an internal (electroconductive) coating that reflects infrared radiation (solar control), such as a stack of silver layer(s), on the second face F2 and covering the entire view on the first sheet or on an additional film, in particular a polymer.

[0082] According to a feature comprising between the upper interlayer and the lower interlayer, above said optical insulating coating, an electro-controllable device, in particular with variable diffusion and / or tint, comprising an electroactive layer between a front electroconductive support on the second face F2 and a rear electroconductive support on the third face F3, or a photovoltaic device and preferably in that the lamination interlayer comprises an additional interlayer, the coated substrate being sandwiched between the additional interlayer and the lower interlayer.

[0083] According to one characteristic, an electro-controllable device is a liquid crystal cell preferably incorporating dichroic dyes or is an electrochromic layer, in particular the liquid crystal cell is a host-guest cell called "GHLC" (for "Guest-Host Liquid Crystal" in English) or a polymer-based cell such as a PDLC cell (for "Polymer-Dispersed Liquid Crystal" in English), or a PNLC cell (for "Polymer Network Liquid Crystal" in English) or a PSLC cell (for "Polymer stabilized liquid crystal" or a DDPDLC cell (for "Dye-Doped Polymer-Dispersed Liquid Crystal" in English).

[0084] A DDPDLC cell exhibits a discontinuous phase of microscopic liquid crystal (LC) droplets within the continuous polymer matrix phase. The shapes, dimensions, and distribution of these droplets depend on numerous physicochemical parameters (and the phase separation process used). When switched off, the DDPDLC scatters light in the OFF mode due to the presence of microdroplets with a refractive index different from that of the polymer matrix. The DDPDLC also absorbs light due to the presence of dichroic dyes in the LC phase. The combination of these two properties results in a dark and hazy (opaque) appearance.When illuminated, the dyes and LCs are oriented perpendicular to the film plane, and therefore the light is not (or only slightly) scattered. The refractive index matches that of the polymer matrix, and the absorption cross-section is low, resulting in a transparent and clear appearance. Examples of DDPDLC cells are described in patent application CN117567875.

[0085] A liquid crystal cell, referred to as a guest host cell (or GH for "guest host" in English), with variable color (light to dark state and vice versa), comprises an electroactive layer including a liquid volume of liquid crystals mixed with Dichroic dyes (dissolved), electroactive layer between an upper (electrode) support, particularly a dielectric and transparent one, comprising an upper electrode, particularly a transparent one, surmounted by an upper alignment layer, and a lower (electrode) support, particularly a dielectric and transparent one, comprising a lower electrode, particularly a transparent one, surmounted by a lower alignment layer, the electroactive layer being between the lower and upper alignment layers, the lower support being closer to the F3 face than the upper support, in particular the host-guest cell being surrounded by an interlayer laminated frame layer (based on PVB). A host-guest cell is advantageous because it exhibits a very fast switching time, high contrast between light and dark states, low blur, and a potentially neutral tint.

[0086] According to one feature, a guest host cell includes an internal polymer seal, preferably no more than 1 cm wide, between the lower support and the upper support and surrounding the electroactive layer. In the visible part of the glazing in the mounted position, the glazing includes means for masking the outside of the first edge and the internal seal, and even the other second edge of the optical insulating coating, referred to as external masking means. Preferably, the external masking means include a peripheral internal masking layer, which is: - a coating on face F2, in particular enamel, or a coating on the upper interlayer, - or an opaque interlayer abutted with the upper, so-called short, interlayer, set back from the first layer, - and preferably the internal masking methods include a peripheral internal masking layer which is: - (excluding any light injection zone) a coating, on face F3 or F4, in particular enamel, or a coating on an intermediate layer of laminate under the lower support, in particular on a lower intermediate layer or an additional intermediate layer between the lower intermediate layer and the lower support or on an intermediate frame layer, - or an opaque interlayer of the lamination interlayer, under the lower support, in particular an additional interlayer between the lower interlayer and the lower support or on an interlayer frame layer.

[0087] The electrically controlled device can have variable color.

[0088] The electrically controlled device, in particular for an opening roof or side window, can be segmented, at least in the clear glass area, into several cell regions by at least one electrical discontinuity, in particular of submillimeter width, formed in one of the upper or lower electrodes, in particular obtained by laser, each cell region having an electrical supply.

[0089] The electrically controlled device (segmented or not, single liquid crystal cell or sub-cells) can cover at least 90% or 95% or 100% of the clear glass and even extend beyond.

[0090] In one embodiment, the laminated glazing element is a side glazing, in particular opening, the internal joint and the other second edge having a lower longitudinal border below the lower limit of visibility of the glazing, and the peripheral internal masking layer includes an upper longitudinal masking band, in particular horizontal or even one or more internal lateral masking bands, and preferably the peripheral internal masking layer includes another upper longitudinal masking band or even one or more internal lateral masking bands.

[0091] The invention also relates to a vehicle, particularly a road vehicle, incorporating the aforementioned illuminated laminated glass element of the invention. In particular, the vehicle comprises a door housing the aforementioned illuminated laminated glass element of the invention as a side window, particularly one that opens at the rear.

[0092] The present invention is now described by means of purely illustrative and in no way limiting examples of the scope of the invention, and from the accompanying illustrations, in which: - [Fig. 1] shows a schematic cross-sectional view of an illuminable laminated glass element 100, in particular a motor vehicle roof according to the invention in a first embodiment. [Fig. 1] also shows a detailed view of the lower redirecting element used to redirect the light and fixed to face F3 on the second glass substrate. - [Fig.la] represents a schematic front view of the roof of [Fig.l]. - [Fig.lb] schematically illustrates the propagation of light via the upper redirecting element. - [Fig.le] schematically illustrates the propagation of light via the lower redirecting element. - [Fig.l'] represents a detailed view of an example of a prismatic reflecting film then used to redirect the light. - [Fig.2] represents a schematic cross-sectional view of an illuminable laminated glass element 200 of a motor vehicle in a second embodiment which is schematically shown in front view on [Fig.2a]. - [Fig.2'] represents a schematic longitudinal cross-sectional view of the illuminable laminated glass element 200 of the second embodiment. - [Fig.2a] represents a schematic front view of the illuminable laminated glass element 200 of the second embodiment. - [Fig.3] represents a schematic longitudinal sectional view of an illuminable laminated glass element 300 of a motor vehicle in a third embodiment. - [Fig.3'] represents a schematic cross-sectional view of the 300 illuminateable laminated glass element of the motor vehicle of the third embodiment. - [Fig.3a] represents a detailed view and a positioning variant relative to [Fig.3]' of the lower redirecting element of the illuminable laminated glass element 300 of the third embodiment. - [Fig. 4] shows a schematic cross-sectional view of a 400 laminated glass element for a motor vehicle in a fourth embodiment. [Fig. 4] also shows a detailed view of a mounting variant for the lower redirecting element used to redirect light and fixed to the rear face of the coated substrate. - [Fig.5] represents a schematic cross-sectional view of a 500 laminated glass element of a motor vehicle in a fifth embodiment. - [Fig.6] represents a schematic cross-sectional view of a 600 laminated glass element of a motor vehicle in a sixth embodiment. - [Fig.6'] represents a variant of the laminated glass element of [Fig.6]. - [Fig.7] represents a schematic cross-sectional view of a 700 laminated glass element of a motor vehicle in a seventh embodiment. - [Fig.8] represents a schematic cross-sectional view of a laminated glass element 800 of a motor vehicle in an eighth embodiment. - [Fig.9] represents a schematic cross-sectional view of a 900 laminated glass element of a road vehicle according to the invention in a ninth embodiment. - [Fig. 10] represents a schematic cross-sectional view of a 1000 laminated glass element forming an illuminable opening side window of a road vehicle according to the invention in a tenth embodiment. - [Fig.10a], [Fig.10b], [Fig.10c] and [Fig.10d] each represent a schematic front view of an example of side opening glazing with the laminated glazing element similar to that of [Fig. 10]. - [Fig. 11] represents a schematic cross-sectional view of a laminated glass element 1100 forming a fixed illuminable side window of a road vehicle according to the invention in an eleventh embodiment. - [Fig. 11a] and [Fig. 11b] each represent a schematic front view of an example of side glazing with the laminated glass element similar to that of [Fig. 11]. - [Fig. 12] represents a schematic cross-sectional view of an illuminable laminated glass element 1200 of a road vehicle according to the invention in a twelfth embodiment - [Fig. 13] represents a schematic cross-sectional view of an illuminable laminated glass element 1300 of a road vehicle according to the invention in a thirteenth embodiment - [Fig. 14] represents a schematic cross-sectional view of an illuminable laminated glass element 1400 of a road vehicle according to the invention in a fourteenth embodiment.

[0093] It is specified that for the sake of clarity the different elements of the objects represented are not necessarily reproduced to scale.

[0094] Figure 1 shows a schematic cross-sectional view (here lateral AA) of an illuminable laminated glass element 100 of a vehicle according to the invention, such as a luminous laminated vehicle roof schematically illustrated in front view in Figure 1a, in a first embodiment. In particular, for a fixed roof (canopy), the width is from 85 cm to 1.4 m and the length from 75 cm to 1.65 m.

[0095] This refers to an illuminable laminated vehicle element, 100, rectangular and curved (in one or more directions), which comprises a laminated glazing 1, preferably curved, transparent (at least in a clear (central) window) comprising: - a first sheet of glass 1 intended to form the outer glass, for example rectangular (of dimensions 1600X1100 mm for example), with a tinted composition (VG10 or TSA 4+ glass marketed by the Saint-Gobain Glass company with a light transmission or TL of about 28%) for example of a thickness of 2.1 mm, with a first main face 11 corresponding to the Fl face, a second main face 12 called face F2 and an edge (longitudinal slices 10 and 10'), the F2 face being optionally coated with a transparent functional coating (heating, etc.) or even face Fl, - a second transparent sheet, preferably mineral glass, 2, here of the same shape and dimensions as the first sheet 1, forming internal glazing, on the passenger compartment side, having a third main face 13 or face F3 and a fourth main face 14 or face F4, and an edge (longitudinal slices 20 and 20') - for example a sheet of soda-lime silicate glass, extra clear such as Diamant glass marketed by the Saint-Gobain Glass company with a TL of at least 91%, of a thickness equal for example to 2.9 mm, glass with a refractive index of around 1.52 at 600nm or Optiwhite glass of 1.95mm, or Sunmax glass of 2.05mm, - between face F2 and face F3, a laminate interlayer 3, transparent, with a longitudinal slice 30 here aligned or possibly offset from the longitudinal slices 10, 10' towards the center of the glass (therefore recessed), here comprising: . - an upper interlayer 31, in particular thermoplastic, here based on PVB (with plasticizers, at least 30% by weight), in particular 0.38 mm or 0.76 mm thick (in one or two sheets), with a refractive index n3a in the visible spectrum, clear or in a tinted variant, for example tinted gray with a TL of 27%, in adhesive contact with face F2 or with a functional transparent coating on face F2 (in the clear spectrum, in particular a functional transparent coating with a thickness of at most 1 pm or 200 nm), - a lower interlayer 32 of PVB (for example with plasticizers, at least 10% by weight), clear (as transparent as possible and with as few optical defects as possible), for example 0.38 mm or 0.76 mm thick (in one or two sheets) in adhesive contact with face F3, with a refractive index n3 of approximately 1.48 at 600 nm, for example PVB with a TL equal to at least 90%.

[0096] The upper polymeric adhesive interlayer 31 is preferably PVB-based. Alternatively, the upper interlayer 31 is based on a cross-linked polymer adhesive (OCA), for example, polyacrylate. Preferably, the upper interlayer 31 has a thickness of no more than 0.76 mm.

[0097] The lower polymeric adhesive interlayer 32 is preferably PVB-based, for example Eastmann's PVB RK11. Alternatively, the lower interlayer 32 is based on a cross-linked polymer adhesive (OCA), for example polyacrylate. Preferably, the lower interlayer 32 has a thickness of no more than 0.76 mm.

[0098] Alternatively, the lower interlayer 32 is based on clear PVB with no or little plasticizers (for example less than 10% by weight of plasticizers such as Eastmann's PVB RMI 1 or even less than 5% by weight, in particular Kuraray SkyViera film or Optical grade Thin Film for example of thickness of at most 25 pm.

[0099] As examples of gray-tinted PVB (in shades of gray), as for the upper interlayer 31, some PVBs also having acoustic properties, we can cite the commercial products listed in Table 1 below. Table 1 shows the L, a*, and b* values ​​of laminated glazing with PVB sandwiched between two 2.1 mm sheets of Saint-Gobain Planilux glass, as well as the TL of such glazing. [Tables 1] Fabricant Nom commercial Epaisseur L* a* b* TL Eastman RB47 273600 0.76 mm 70.20 -3.30 1.40 41 ± 2 % Eastman QM47 3518S1 0.76 mm 48.80 -4.30 1.30 18 + 2% Eastman RB47 352700 0.76 mm 59.20 -3.50 2.30 27 + 2 % Eastman QP57 562300 0.81 mm 55.19 0.78 0.84 23 + 2 % Eastman QE57 562300 0.81 mm 55.19 0.78 0.84 23 + 2 % Eastman RB 17 654400 0.38 mm 72.60 0.90 -4.00 44.5 + 3 % Sekisui SEK NOR RZN1 0#7018 0.76 mm 45.0 - 5 5.0 -7.0-1.0 -1.0-7.0 18 + 2% Sekisui SEK SAFRZN12 #7018 0.76 mm 45.0 - 5 5.0 -7.0-1.0 -1.0-7.0 18 + 2% Sekisui SEK NOR SE / HE 12 #7302 0.76 mm 5.0 - 25 .0 -8.0-2.0 0.5-6.5 1.6 + 1 % Sekisui SEK SAFRZN12 #7302 0.76 mm 5.0 - 25 .0 -8.0-2.0 0.5-6.5 1.6 + 1 %

[0100] The laminated glazing may include an IR-reflective coating on face 14, face F4, forming a low-emissivity layer (as reference 16 in [Fig. 6]). The transparent, single-layer or multi-layer infrared-reflective coating comprises at least one electrically conductive functional layer, for example, of a transparent conductive oxide, in particular ITO. The infrared-reflective coating preferably comprises a dielectric sublayer, in particular silicon (oxy)nitride, and preferably a dielectric toplayer, in particular silicon (oxy)nitride.

[0101] Furthermore, the laminated glazed element (roof) 100 has a peripheral internal masking layer 7 forming a masking frame delimiting a glazed area 70 (daylight), here rectangular (see [Fig. 1a]) with straight edges. Any local modification of the edges 70 is possible (gradient of dots, wider area, etc.). For example, the internal masking layer 7 is: - a black enamel on face F2, - or a black ink, on one of the faces of the upper interlayer 31, preferably the face oriented towards face F2, ink preferably PVB-based with black pigments if upper interlayer 31 is PVB; - the masking width at the front (front lateral edge side 10a) is, for example, from 10 to 40cm, - the masking width at the rear (rear side edge 10b) is, for example, from 5 to 25cm, - the masking width on the long sides (longitudinal edges) is for example 5 to 20cm, identical or different width for the two long sides.

[0102] To optically isolate a lower part (with light guide and light extraction) and the tinted, absorbent upper part, the laminated glazed element (the roof) 100 further comprises an optical insulating coating 5 on a transparent film 5', referred to as film The entire optical insulating coating 5 and the carrier film 5' are referred to as the coated substrate. The carrier film 5' has a front face 51' and a rear face 52'. The carrier film 5' has a length in the direction of light propagation of at least 40 cm, defined along a propagation axis X. The optical insulating coating 5 is on the rear face Fb 52' (side face F3) of the carrier film 5'. The rear face of the carrier film, including the optical insulating coating 5, is called the coated (or deposition) face. The coated substrate is located between the second and third faces F2 and F3, specifically sandwiched between the upper interlayer 31 and the lower interlayer 32. The coated substrate extends throughout the entire clear glass area and beyond, with the second slice 50 and the other second slice 50' being beneath the masking layer 7.

[0103] The coated substrate is recessed from the edges 10, 10', 20, 20' of the sheets 1, 2, in particular by at least 10 mm. The coated substrate has a given surface area S. The carrier film and even the coated substrate itself are here less than 200 µm thick, or even at most 100 µm, and are protected at their periphery by one or both of the lower and upper interlayers 31, 32 (particularly during lamination). If the upper interlayer is light-colored, the interface between the two lower and upper interlayers 31, 32 may be indistinguishable.

[0104] The carrier film 5' is preferably made of polymer and is distinct from a fluoropolymer and even from an optically crosslinked adhesive layer (OCA). The carrier film 5' is transparent and clear.

[0105] The optical insulating coating 5 is made of a material, preferably a polymer, comprising a separate matrix of a fluoropolymer (or even a cross-linked adhesive material) of submillimeter thickness Ei, at least 400 nm and preferably 500 nm or 800 nm, and a second layer 50 optionally recessed from the layer 50' of the carrier film 5' without compromising the optical insulating function. The optical insulating coating may be directly applied or applied over a functional sublayer (barrier, etc.), transparent to the carrier film 5'.

[0106] The optical insulating coating 5 is transparent and even as transparent as possible.

[0107] The optical insulating coating 5 is in a material comprising a matrix in particular distinct from a fluoropolymer.

[0108] The optical insulating coating 5 has a refractive index n2 in the visible and with nl-n2 which is at least 0.04 in the visible and even at least 0.08 or 0.13, of submillimeter thickness Ei of at least 400nm and even 500nm, and even at least 800nm.

[0109] In one configuration, the optical insulating coating 5 comprises a polymer matrix crosslinked with said index n2, preferably of at most 1.42 and even of at less than 1.35, matrix preferably among polyacrylate-based polymers with a fluorinated function, in particular urethane acrylate or fluorourethane acrylate or fluorosilicone acrylate. The thickness is preferably not more than 1 Opm or 5 µm or 2 µm and at least 800 nm.

[0110] In one configuration, the optical insulating coating 5 comprises a matrix with a refractive index n2m greater than n2 and less than ni, and preferably with n2m of at most 1.48 (and preferably n2 of at most 1.42 and even of at least 1.35), and comprising (nano)poroses and / or low-index and / or porous, hollow (nano)particles with a refractive index less than ni, in particular hollow particles with a size of at most 300 nm or even 100 nm, for example hollow silica nanoparticles. The thickness is preferably at most 1 Opm or 5 pm and at least 800 nm.

[0111] The matrix is ​​a crosslinked polymer or thermoplastic, in particular chosen from polymers based on polyacrylate, polyepoxides, polyvinyl acetate, polyester, polyurethane, PVB or minerals, especially silica. A polymer matrix based on polyacrylate, polyurethane or even polyepoxides, polyvinyl acetate, or polyester is preferred.

[0112] The optical insulating coating 5 may include a protective transparent layer, with a refractive index greater than n2, a submillimeter thickness, and even a maximum of 100 µm. This protective transparent layer covers the optical insulating coating in contact with the lower interlayer layer 32 and even with the extraction means 6.

[0113] Alternatively, the coating 5 is porous silica.

[0114] To avoid creases and undulations, preferably the coated substrate can be located in a roof area with a curvature, a limited sphericity, in particular with a radius of curvature of at least 1.5 m. For example, the second section 50 can be sufficiently far from the section of sheets 1 and 2. The masking width on the sides and / or front and rear can be adjusted (increased) for this purpose.

[0115] For example the carrier film 5' is a clear PET of less than 200pm (protected by fining of the upper interlayer 31) in particular of 100pm or 75pm, with a TL of about 90% or more.

[0116] The carrier film 5' has a blur value H1 which is in a range of 0.5% to 2%, preferably is at most 1% and even at least 0.7%, and the carrier film has a refractive index n0 preferably greater than n3a even preferably n0-n3 of at least 0.1.

[0117] In order to illuminate the laminated glass element 100, the latter further comprises, towards the first edge, a first light source on the face side F4, in particular a first set 4 of light-emitting diodes on their support 40, preferably each having a divergence of at most 8°, and a second light source 4', in particular a second set of diodes, on the F4 face side, on their 40' support, preferably each having a divergence of no more than 8°. The light sources are masked from the outside by the internal masking layer 7.

[0118] In particular, the laminated glass element 100 comprises, in a manner masked from the outside by the internal masking layer 7: - at a first periphery of the coated substrate 5, 5', a light redirection element 8, called the upper redirection element, capable of redirecting light, here emitted from the side of face F4, into the carrier film 5' via the front face Fa, - another light redirection element 8' called the lower redirection element, capable of redirecting into the second sheet 2 light emitted here from the side of face F4, the lower redirection element 8' being here a reflector on the side of face F3 or, alternatively, transparent on the side of face F4, - light-emitting diodes 4 (here front-emitting) on ​​a support 40 (for example PCB) opposite (or offset) the fourth main face 14 (face F4), with a series of diodes optically coupled to said upper redirector element 8, in particular opposite the upper redirector element, and another series of diodes 4' on a support 40' (for example PCB) optically coupled to said lower redirector element 8', in particular opposite the lower redirector element.

[0119] The description given above or below with regard to the upper redirector element 8 applies to the lower redirector element 8'.

[0120] The lower redirecting element and even the second light source 4' is preferably all or part offset from said upper redirecting element 8 (at least from the so-called illuminated part), more towards the center of the glazing than the upper redirecting element 8 (and even than the first light source 4).

[0121] In particular, the luminance is on the order of 1 cd / m2. The homogeneous luminous background thanks to the blur of the carrier film can provide a curtain effect, preserving privacy.

[0122] The lighting means can be doubled (in particular for the example of the roof in Figures 1 and 1a) by adding, on the side opposite the first edge, on the side of the longitudinal edges 10', 20' of the glazed element, a second first set of light-emitting diodes 4, optically coupled to another upper redirecting element 8, in particular opposite said other upper redirecting element, and a second second set of light-emitting diodes 4', optically coupled to another lower redirecting element 8', in particular opposite said other lower redirecting element. The longitudinal edges 10, 10' of the glazed element are not necessarily parallel.

[0123] Diodes can also be placed on the front or rear side edges.

[0124] Furthermore, the glazed element includes light extraction means 6 which, for example, include a diffusing coating, preferably transparent, with a binder and diffusing particles, preferably with a refractive index n5 greater than or equal to ni, in particular at least 1.48. Specifically, the substrate of the diffusing coating is the lower interlayer 32, the second sheet 2, or the optical insulating coating. The extraction means 6 face the surface S of the coated substrate. The extraction means 6 are arranged in the view between the lower redirecting elements 8'. The extraction means 6 are here on the lower interlayer 32 on the F3 face side, and / or the second sheet 2 is the substrate of the diffusing coating. In the variant of [Fig. 5], the extraction means 6 are in contact with the optical insulating coating on the Fb face.

[0125] The upper redirecting element 8 is a prismatic reflecting element comprising reflecting prisms oriented here 1 towards the second face F2 or towards the third face F3. The reflecting prisms, in particular the illuminated portion receiving said light from the first source 4, are offset from the first edge of the coated substrate of the first periphery, in particular from the longitudinal (or lateral) edge, in particular the reflecting prisms being in adhesive contact with the upper interlayer 31 of the laminate. A portion of the reflecting prisms on the front face 51 is preferably outside the light injection zone.

[0126] In [Fig. 1], the upper redirecting element 8 is therefore arranged at least partially against or bonded to the front face Fa of the carrier film 5'. The upper redirecting element is arranged against the front face Fa (covering the carrier film 5') for at least 2 mm and protrudes from the first edge of the carrier film by at least 3 mm and preferably by no more than 10 mm. The total thickness of the upper redirecting element is in particular no more than 100 µm (in particular at least 30 or 50 µm).

[0127] In [Fig. 1], the lower redirecting element 8' is located at the periphery of a so-called reference edge, which is the first edge of the coated substrate. The lower redirecting element 8' is, for example, entirely opposite the rear face Fb of the coated substrate. The lower redirecting element 8' is at most 4 mm from the rear face of the coated substrate, preferably at most 1 mm. In [Fig. 1], the lower redirecting element 8' is against face F3 and bonded to face F3 by a local adhesive or by the lower interlayer 32. The lower redirecting element 8' is at most 3 mm from the first edge of the coated substrate. The total thickness of the lower redirecting element 8' is, in particular, at most 100 µm (especially at least 30 or 50 µm).

[0128] The lower redirecting element 8' is a prismatic reflecting element comprising reflecting prisms oriented towards the second face F2 as in [Fig.1], or towards the third face F3 (as in [Fig.6]), or is a transparent light redirecting element, on the fourth main face F4 (possibly forming a deflector, macroprism or comprising (microprisms).

[0129] Alternatively, the lower redirecting element 8' can be bonded to the rear face 52 of the optical insulating coating 5, with the prisms oriented towards face F2, as illustrated in the detail view of [Fig. 1]', or with the prisms oriented towards face F3 as illustrated in [Fig. 3a]. In [Fig. 1]', the adhesive 60 used to fix the lower redirecting element 8' is opaque (e.g., black) to constitute an opaque inner element equivalent to the inner masking element 7' described later and always under the inner masking layer 7 (especially for a fixed side glazing such as a roof).

[0130] For example, each of the reflective prismatic elements 8, 8' is a polymer prismatic film, as shown in detail in [Fig.1] with: - a flat part 81 (substrate for example PET of at most 100pm) bonded to the coated substrate, - and a textured layer (by embossing etc), partially or even fully textured, forming prisms 82 which become reflective by a reflective layer 83 for example metallic (by conformal deposition on the textured prismatic surface).

[0131] The microprisms are schematically represented in cross-section as right triangles, but the angle of inclination of the inclined faces of the prisms with the mean plane of the reflective prismatic film can be adjusted to better redirect the light. Similarly, the principal direction of emission of the light source can be adjusted. A collimator can be added between face F4 and the diodes.

[0132] In a first embodiment ([Fig. 1]), the angle of the principal emission direction of the light source 4 or 4' with the normal to the plane (i.e., the angle of incidence) is preferably at most 30°, preferably with a divergence of at most 8°. In particular, the principal emission direction with respect to a normal to the fourth principal face F4 emits a cone of light with angles in the range of 22° ± 4°, or even in the range of 22° ± 2°. Preferably, a collimator can be inserted between the light source and face F4 14. The PCB support 40 or 40' can be oblique with respect to the plane of the glazing. The inclined face of the reflecting prisms (receiving the light and redirecting it) can form an angle of 35° to 50°, in particular 40° to 50°, with the average plane of the reflecting prismatic film (or even the glazing).

[0133] In another embodiment, the angle of the principal emission direction of the light source 4 or 4' with the normal to the plane (i.e., the angle of incidence) is preferably 0° ± 5°, preferably with a divergence of at most 8°. In particular, the principal emission direction with respect to a normal to the fourth principal face F4 emits a cone of light with angles in the range [0° ± 4°], or even in [0° ± 2°]. Preferably, a collimator can be interposed between the light source and the face F4 14. The PCB support 40 or 40' can be parallel to the plane of the glazing. The inclined face reflective prisms can form an angle with the mean plane of the reflective prismatic film (or even the glazing) of 30° to 40°, in particular 35° to 40°.

[0134] For example, the reflective prismatic film comprises a transparent thermoplastic film, for example based on polyethylene terephthalate (PET), on which transparent prisms are formed from a polyacrylate (reinforced resin, for example by UV) and a metallic layer (conformal deposit) to form the reflective prisms.

[0135] In another example, a transparent prismatic film comprises a transparent thermoplastic film, for example based on polyethylene terephthalate (PET), on which the transparent prisms are formed from a polyacrylate (resin crosslinked, for example, by UV).

[0136] The redirecting element 8, such as 8', forms a longitudinal band, for example schematically represented on [Fig. 1a] as the two series of linear type light sources 4 and 4' along a longitudinal edge of the roof.

[0137] Alternatively, the prismatic film 81, 82 is a monolithic polymer film, for example preformed, and the reflective layer 83 is applied.

[0138] The diodes and / or their support can be fixed to face F4 (by an additional part, etc.). Alternatively, the diodes are side-emitting (Figures 13 and 14).

[0139] The extraction means 6 are, for example, extended or point geometric patterns, in particular with a width of no more than 10mm to avoid the shading phenomenon.

[0140] For example, the distance between the extraction means extraction 6 and the diodes (or the lower prismatic film 8') is at least 10mm or 40mm.

[0141] For example, the extraction means comprise a diffusing coating (a network of disjoint and / or interconnected patterns) in contact with face F3 and covering at most 40% of the clear glass area to promote adhesion with the second sheet 2. The diffusing coating is deposited on face F3 (for example, an enamel, a transparent ink) or on the main face of the lower PVB layer 32 oriented towards face F3. The diffusing coating 6 is polymeric or mineral and is deposited by liquid means (by inkjet, screen printing, etc.).

[0142] For example, the diffusing coating is on face F3, for example with an acrylate matrix, preferably with a refractive index greater than or equal to ni, with TiO2 particles of 100 nm in diameter and preferably of at most 1 pm or 400 nm. It is 10 pm to 100 pm or even 50 pm thick. The diffusing coating (for example, based on PVB with TiO2 particles of 100 to 200 nm in diameter) is alternatively deposited on the face of the PVB oriented towards face F3.

[0143] For example, the diffusing coating (disjoint and / or interconnected pattern network) in contact with the optical insulating coating covers at most 50% of the clear glass to promote adhesion of the optical insulating coating with the lower interlayer.

[0144] The luminous glazing 100 can have a plurality of extraction zones 6, notably of a given geometry (rectangular, square, round, etc.). As an alternative to the diffusing layer 6 (enamel, ink, screen-printed or inkjet-printed, etc.), this can be a film, locally applied or bonded locally to the third face F3.

[0145] Alternatively, the light source 4 or 4' can be one or more primary sources (diodes etc.) coupled directly to a guide, along coupling slice, for example optical fiber extractor with light output zone.

[0146] One can choose diodes emitting white or colored light for ambient lighting, reading...

[0147] Several series of 4 or 4' diodes (one edge, two edges, three edges, all around the periphery) can be provided, driven independently and even of different colors.

[0148] Light sources 4 and 4' can be controlled independently.

[0149] Fig.lb schematically illustrates the injection of light into the upper redirecting element 8. The light rays emitted from the sources of the first set of diodes 4 reach the upper redirecting element 8 (the inclined faces of the reflecting prisms) which reflect and redirect the rays into the carrier film 5' via the front face.

[0150] Figure 1a schematically illustrates the injection of light into the lower redirecting element 8' and the propagation of light. The light rays emitted from the sources of the second set of diodes 4' reach the lower redirecting element 8', which reflects the rays into the glass 2. The rays then propagate by total internal reflection in the glass 2 and / or in the lower interlayer 32.

[0151] Figure 2 shows a schematic cross-sectional view, i.e., transverse to the long sides (along AA) of Figure 2a, of a laminated glazed element 200 of a road vehicle according to the invention, in particular a road vehicle roof such as an automobile, and in an embodiment of Figure 1. Figure 2' shows a schematic longitudinal cross-sectional view, i.e., parallel to the long sides (along BB) of Figure 2a. This glazing 200 differs from the first glazing 100 in that: - only the upper redirecting elements 8 extend along the two opposite longitudinal edges (the two long sides) of the glazing; - the lower redirecting elements 8' extend only along the two opposite front and rear lateral edges of the glazing (the two small sides), the lower redirecting elements 8' remaining entirely, for example, opposite the rear face Fb of the coated substrate or on the periphery preferably less than 4mm or 1mm from the edges of the coated substrate; - thus a single series of diodes is coupled to the right of each of the upper 8 and lower 8' guiding elements on each edge of the glazing.

[0152] Figure 3 shows a schematic cross-sectional (transverse to the long sides) and exploded view of an illuminable laminated glazing 300 for a road vehicle according to the invention in a third embodiment. Figure 3' shows a schematic longitudinal cross-sectional (parallel to the long sides) view of the illuminable laminated glazing 300. This glazing 300 differs from the first glazing 100 in that: - only the upper redirecting elements 8 extend along the two opposite longitudinal edges (the two long sides) of the glazing; - the lower redirecting elements 8' extend only along the two opposite front and rear lateral edges of the glazing (the two small sides); - thus a single series of diodes 4, 4' is coupled to the right of each of the respective upper 8 and lower 8' directing elements on each edge of the glazing; - the upper redirecting elements 8 on each side are laminated into the upper interlayer 31 which comprises two upper sheets 31-1 and lower sheets 31-2; the upper sheet 31-1 is for example a clear or tinted PVB; The lower sheet 31-2 is always clear, for example a clear PVB; the upper sheets 31-1 and lower sheets 31-2 have a thickness for example of 0.38 mm; - the upper redirecting elements 8 which have the same position as on [Fig.l] (partially covering the coated substrate while protruding from the edge of the coated substrate) have their prisms oriented towards face F3; - the lower redirecting elements 8' are not opposite the coated substrate, they are offset by being immediately at the edge of the coated substrate and are in adhesive contact with the upper intercalated layer 31, with their prisms also oriented towards the face F3.

[0153] Figure 3a shows a detailed view and an alternative positioning relative to Figure 3' of the lower redirecting element 8', which is then used to redirect the light. The lower redirecting element 8' is opposite the coated substrate and directly against the rear face 52 and on the optical insulating coating 5 of the inverted coated substrate, the reflecting prisms (the reflective coating) being, on the other hand, also oriented towards face F3.

[0154] Figure 4 shows a schematic cross-sectional view of a laminated glass element 400 of a road vehicle according to the invention, in particular a road vehicle roof such as an automobile, and in an embodiment of Figure 1. This glazing 400 differs from the first glazing 100 in that the lower redirecting elements 8' are reversed, with the reflective prisms (the reflective coating) facing face F3. The lower redirecting elements 8' are bonded to face F3 of the second glass sheet 2 using transparent adhesive 60'.

[0155] Figure 5 shows a schematic cross-sectional view of a laminated glass element 500 of a road vehicle according to the invention in a fifth embodiment. This glass 500 differs from the first glass 100 in that: - the upper interlayer 31 is tinted, for example a tinted PVB; - the lower redirecting element 8' is reversed, the reflecting prisms (the reflective coating) being oriented towards the face F3 and glued to the second sheet of glass 2 via transparent glue 60'; - the extraction means 6 are on the rear face Fb of the coated substrate, in contact with the optical insulating coating 5.

[0156] Figure 6 shows a schematic cross-sectional view of a laminated glass element 600 of a road vehicle according to the invention in a sixth embodiment. This glass 600 differs from the first glass 100 in that: - the upper interlayer 31 is tinted, for example a tinted PVB; - the upper redirecting elements 8 are linked to the carrier film 5' via their entire surface (without protruding), they are in particular fixed to it by glue; - the optical insulating coating 5 does not cover the entire carrier film 5', the coated substrate thus presenting at each free end of the carrier film from the inner edge a free area 5” not covered by the optical insulating coating, this free area remaining limited in surface area because the lower redirecting elements 8' must be opposite the optical insulating coating 5; - the extraction means 6 are on the rear face Fb of the coated substrate, in contact with the optical insulating coating 5; - the glazed element has on face F2 a solar control coating 15 covering the surface S (viewable surface), like a silver stack; - the glazed element has on face 14 F4 a coating reflecting infrared 16, forming a low emissivity layer, such as a stack with a transparent conductive oxide layer (TCO in English, in particular based on indium tin oxide (ITO)).

[0157] Fig. 6 represents a schematic cross-sectional view of a 600' laminated glass element of a road vehicle according to an alternative embodiment of Fig. 6: - the upper intercalated layer 31 is possibly a clear PVB as for [Fig.l]; - the upper redirecting elements 8 have their prisms oriented towards face F3; - the lower redirecting elements 8' are directly linked to the optical insulating coating 5 of the coated substrate with the prisms oriented towards the face F3; in yet another variant, the lower redirecting elements 8' glued to the optical insulating coating 5 of the coated substrate may have their prisms oriented towards the face F2.

[0158] Figure 7 shows a schematic cross-sectional view of a laminated glass element 700 of a road vehicle according to the invention in a seventh embodiment. This glass 700 differs from the first glass 100 in that: - the upper redirecting elements 8 are linked to the carrier film 5' via their entire surface (without protruding), they are in particular fixed to it by glue; - the upper redirecting elements 8 have their prisms oriented towards the face F3; - the optical insulating coating 5 does not cover the entire carrier film 5', the coated substrate thus presenting at each free end of the carrier film from the inner edge a free area 5” not covered by the optical insulating coating, this free area remaining limited in surface area because the lower redirecting elements 8' must be opposite the optical insulating coating; - the lower redirecting elements 8' have their prisms oriented towards face F3.

[0159] Figure 8 shows a schematic cross-sectional view of a laminated glass element 800 of a road vehicle according to an eighth embodiment of the invention. This glass 800 differs from the first glass 100 in that it comprises an electrically controlled device 9 between the upper interlayer 31 and the coated substrate. An additional interlayer 33 is then integrated into the laminated glass element and between the upper interlayer 31 and the carrier film 5' of the coated substrate to laminate the electrically controlled device 9. Since the device is 0.4 mm thick, a 0.38 mm thick interlayer frame 34, made of clear or tinted PVB, is added. The edges of the electrically controlled device 9 and the interlayer frame 34 are under the internal masking layer 7. The upper interlayer 31 is, for example, clear or tinted PVB. The additional intercalated layer 33 is clear.The additional interlayer 33 is, for example, a clear PVB. The coated substrate 5',5 is then in adhesive contact with the additional interlayer 33 and the lower interlayer 32.

[0160] The electro-controllable device 9 is here a PDLC liquid crystal cell or a DDPDLC cell.

[0161] The light redirection element 8 (in particular the reflective or transparent prismatic film) faces the internal masking layer 7. Preferably, the light redirection element 8 between face F2 and face F3 is offset from the electro-controllable device 9 to avoid overpressure that can degrade the electro-controllable device, particularly when the electro-controllable device is a liquid crystal cell. Thus, in particular, the coated substrate is larger than the electro-controllable device 9, the edge of the electro-controllable device 9 being offset from the edge of the coated substrate, which is closer to the edge of the glazing. The upper redirection element 8 is always on the carrier film 5' and protrudes from the first edge of the film. The upper redirection element 8 is located opposite the intermediate frame layer 34. To avoid an overthickness effect of the upper redirector element 8, a preferred safety distance between the limit of the electro-controllable device 9 and the upper redirector element 8 is at least 10mm, 20mm or in particular 30mm.

[0162] In the realization of this [Fig.8], the lower redirecting elements 8' have their prisms oriented towards the face F3 and are glued to the second sheet of glass 2.

[0163] Figure 9 shows a schematic cross-sectional view of a laminated glass element 900 of a road vehicle according to the invention in a ninth embodiment. This glass 900 differs from the first glass 100 in that it comprises an electrically controlled device 9 between the upper interlayer 31 and the coated substrate. The same laminate structure as that of Figure 8 is reproduced, but with a consistently clear upper interlayer 31, for example, a clear PVB. In addition, the lower redirecting element 8' is directly bonded to the optical insulating coating 5 of the coated substrate, with the prisms oriented towards face F3.

[0164] The electrically controllable device 9 is different from the PDLC cell of [Fig.8] and is, for example, a so-called host-guest liquid crystal cell (GHLC), or a DDPDLC cell or even a photovoltaic device with one or more solar cells.

[0165] When the electro-controllable device 9 is a guest host cell, the cell is single or comprises a set of sub-cells separated by separators forming an interconnected network, preferably polymer-based with a width of at most 100 pm.

[0166] Figure 10 shows a schematic cross-sectional view of a laminated glass element 1000 forming an illuminateable opening side window of a road vehicle according to the invention in a tenth embodiment. The lower visibility limit of the glass is schematically drawn in dashed lines. The light sources 4 are located on one side of the glass and in a door. The upper redirecting element 8 and the redirecting element 8' are arranged internally within the body of the laminated glass element. This glass 1000 differs from the first glass 100 in that: - it does not have an internal masking layer 7 on one of the sides (the side of the glass that remains internal to the bodywork); - Optionally, an internal masking layer 7', peripheral, opaque, is added to the fourth face F3, notably congruent or of a width less than the width of the internal masking layer 7.

[0167] With regard to [Fig. 10a] to [Fig. 10d], the opening side glazing has an irregular lower longitudinal edge 10, 20, which is not straight, with a projecting central portion 101, 201, and recessed front and rear portions 102, 202 and 102', 202' for example, concave in shape. The upper longitudinal edge 10', 20' may be straight, horizontal, or irregular. The lateral edges 10a, 10b may be parallel or not. The opening side window has a mounting area 110. The mounting area 110 may include at least one opening, as schematically shown in [Fig. 10c], for securing the window to the vehicle body. Alternatively, the mounting area 110 may cooperate by clamping with at least one support or window holder 9' at the lower edge 10, 20, as schematically shown in [Fig. 10d]. There may be a single central mounting area 110 or two mounting areas, referred to as front and rear (Figures 10c and 10d). The window has a lower visibility limit 701 (dashed line).

[0168] Optionally, the opening side glazing, as shown in [Fig. 10a] to [Fig. 10d], includes an electrically controlled device 9 integrated as explained in [Fig. 9]. The electrically controlled device 9 may be an electroactive device of the PDLC or DDPDLC cell type.

[0169] Figure 10b illustrates, at least in the clear glass, an electroactive device which is segmented into several cell regions 9a, 9b, 9c by at least one electrical discontinuity, in particular of submillimeter width, formed in one of the upper or lower electrodes, in particular obtained by laser, each cell region having an electrical supply. The three segmented regions of guest host cells 9a, 9b and 9c are all connected to a common connector 41a.

[0170] In the ON state of the guest host cell (here clear state of the glazing), and in the OFF state of the light source (when the light source is turned off), the extraction means 6 can be a diffusing coating 6 which can be opaque, white or almost invisible.

[0171] The extraction means 6 form areas of given geometry (rectangular, square, round ...).

[0172] For example, in the raised position of the side glazing, the light extraction means 6 extend to within 5 cm of this median portion, along a substantially horizontal axis (±1°), and the light source (and the reflective or transparent prismatic film) are longitudinally extended along this substantially horizontal axis (±1°). Preferably, the light source 4 is at least 5 mm from the irregular lower edge 10, 20.

[0173] In particular ([Fig. 10a]), the internal masking element 7 and the internal masking element 7' extend parallel to the sides of the glazing along three longitudinal bands: upper 71, lateral 72, and 73. The three bands: upper 71 and lateral 72 and 73 of the internal masking element 7' are congruent with those of the internal masking element 7 of face F2 (the internal edge of the internal masking element 7' masking from the inside the internal joint of cell 9 and the edge of the carrier film 5). The inner masking element 7' is an enamel in F3 or an ink on the lower interlayer 32 in PVB or on the upper support of cell 9 or on the additional interlayer 33.

[0174] Figure 11 shows a schematic cross-sectional view of a laminated glass element 1100 forming a fixed side window (e.g., rear window or quarter window) of a road vehicle according to the invention in an eleventh embodiment. It is rectangular in shape, for example, and in particular has a straight lower edge. The lower visibility limit of the glass is schematically drawn with horizontal dashed lines. This glass 1100 differs from the first glass 100 in that: - the light sources 4, 4' are located on one side of the glazing and in the door; - the upper redirecting element 8 and the lower redirecting element 8' are arranged in the laminated glass element internally to the door; - Optionally, an opaque, peripheral, inner masking layer 7' is added to the fourth face F3, congruent to or narrower than the width of the inner masking layer 7 (to also ensure that what is necessary is hidden from view from inside the vehicle and to clearly delineate the visible area). The upper intermediate layer 31 of this glazing is made of tinted PVB.

[0175] The fixed side glazing of [Fig. 1b] includes an electrically controllable device 9 which is optional and integrated as explained in [Fig. 9]. The electrically controllable device 9 can be an electroactive device of the PDLC or DDPDLC cell type, which is here segmented into several cell regions 9a, 9b, 9c by at least one electrical discontinuity, in particular of submillimeter width, formed in one of the upper or lower electrodes, in particular obtained by laser, each cell region having a power supply. The three segmented guest host cell regions 9a, 9b, and 9c are all connected to a common connector 41a.

[0176] In particular, for this fixed side glazing, the internal masking element 7 and the internal masking element 7' extend parallel to the sides of the glazing along upper longitudinal bands 71, lower longitudinal bands 71', and lateral bands 72 and 73 ([Fig. 1a]). The three upper bands 71 ​​and lateral bands 72 and 73 of the internal masking element 7' are congruent with those of the internal masking element 7 of face F2 (the inner edge of the masking element 7' masking from the inside the internal joint of the guest host cell and the carrier film 5). The masking element 7' is an enamel in F3 or an ink on the lower interlayer 32 in PVB or on the upper support of the guest host cell or on the additional interlayer 33.

[0177] Figure 12 shows a schematic cross-sectional view of a laminated glass element 1200 of a road vehicle according to the invention in an embodiment of Figure 1. This glass 1200 differs from the first glass 100 in that: - the second light source 4' is not front-emitting but laterally emitting from an edge of the glazing, in particular the emission is through the longitudinal edge 20 of the second sheet 2; - there is no lower redirecting element 8'.

[0178] Figure 13 shows a schematic cross-sectional view of a laminated glass element 1300 of a road vehicle according to the invention in an embodiment of Figure 1. This glass 1300 differs from the first glass 100 in that: - the second sheet of glass 2 is shorter on one side compared to the first sheet of glass 1, leaving at the level of the second slice 20' a free space or step 2'' between this second slice of the second sheet of glass and the second slice of the rest of the glazing; - the second light source 4' is not front emission but lateral emission, the emission being through the second longitudinal slice 20' of the second sheet 2 and being arranged from an edge of the glazing in the recess 2' '; - there is no lower redirecting element 8'; - the optical insulating coating 5 does not cover the entire carrier film 5', the coated substrate having at a free end of the carrier film from the inner edge a free area 5” not covered by the optical insulating coating, this free area being opposite the upper redirecting element 8; - the upper redirecting element 8 is entirely linked to the carrier film 5' (without protruding from the inner edge of said carrier film) and is glued to the front face Fa 51' of the carrier film 5' of the coated substrate; - the prisms of the upper redirecting element 8 are oriented towards face F3.

[0179] Figure 14 shows a schematic cross-sectional view of a laminated glass element 1400 of a road vehicle according to the invention in an embodiment of Figure 1. This glass 1400 differs from the first glass 100 in that: - the second glass sheet 2 is shorter on one side, at the level of the first slice 20 compared to the first glass sheet 1 and the upper intercalated layer 31 and the lower intercalated layer 32 are also shorter when being at the right of the second glass sheet 2; - The second light source 4' is not frontal but lateral, the emission being through the first longitudinal slice 20 of the second sheet 2 and being arranged at the level of the shorter edge which creates a step relative to the first sheet of glass. The second source of light 4' is fixed by gluing to the first sheet of glass 1 with glue 60' ' according to the thickness of the two intercalated layers; - there is no lower redirecting element 8'; - the optical insulating coating 5 does not cover the entire carrier film 5', the coated substrate having at a free end of the carrier film from the inner edge a free area 5” not covered by the optical insulating coating, this free area being opposite the upper redirecting element 8; - the upper redirecting element 8 is entirely linked to the carrier film 5' (without protruding from the inner edge of said carrier film) and is glued to the front face Fa 51' of the carrier film 5' of the coated substrate; - the prisms of the upper redirecting element 8 are oriented towards face F3.

Claims

1. Demands Illuminatable laminated glass element for vehicles, particularly road vehicles (100 to 1400), comprising laminated glass, preferably curved, transparent, including: - a first sheet (1), transparent, made of mineral glass, with a first main face Fl (11), a second opposite main face F2 (12) and a first slice (10), intended to form the outer glass, - a polymer laminate interlayer (3, 31, 32, 33, 34) comprising an upper interlayer layer (31), in particular with a refractive index n3a in the visible range, in adhesive contact with the second face F2 or with a functional transparent coating on the face F2, - a second transparent sheet (2), made of mineral glass or polymer, with a third principal face F3 (13), a fourth opposing principal face F4 (14), and a second slice (20), with a visible refractive index n1 of at least 1.5, and the glazed element comprising a transparent optical insulating layer (5) with a visible refractive index n2, an optical insulating layer of submillimeter thickness Ei and at least 400 nm, characterized in that it comprises a coated substrate which includes: - a transparent film (5'), called the carrier film, made of a polymer distinct from a fluoropolymer, with a front principal face Fa (51') oriented towards face F2 and an opposing rear principal face Fb (52'), with a submillimeter thickness Ef of at least 50 µm, the carrier film having a blur value H1 in the range of 0.5% to 2%, and preferably the carrier film having a refractive index n1 greater than n3a, in particular n0-n3a by at least 0.1, - the optical insulating layer, which is an optical insulating coating (5) on the rear face Fb, and a slice (50), n2 is less than ni, the difference in refractive indices nl-n2 being at least 0.06 in the visible, the coated substrate being laminated between the second and third faces F2 and F3, and is between the upper interlayer (31) and a lower interlayer (32), in adhesive contact with the third face F3 or with a functional transparent coating on face F3, and comprising: - a light redirection element (8), called upper redirection element, capable of redirecting light, preferably emitted from the side of face F4, into the carrier film via the front face Fa, upper redirection element which is a prismatic reflector element comprising reflector prisms oriented towards the third face F3 or towards the second face F2, - light extraction means (6), between the optical insulating coating (5) and face F4, capable of extracting guided light.

2. Illuminatable laminated vehicle glass element (100 to 1900) according to claim 1 characterized in that the difference in refractive indices nl-n2 is at least 0.08 in the visible and in that the thickness Ei is at least 500nm, and even at least 800nm.

3. Illuminatable laminated glass element according to claim 1 or 2, characterized in that the blur H1 of the carrier film is at most 1%

4. Illuminatable laminated glass element according to any one of claims 1 to 3 characterized in that the coated substrate completely occupies a view opening of the glass element, and preferably the coated substrate (5, 5') extending beyond the view opening under a peripheral masking layer (7) delimiting the view opening, forming a peripheral frame in particular for fixed glazing or at least three peripheral bands in particular for side opening glazing.

5. Illuminatable laminated glass element according to any one of the preceding claims, characterized in that the upper redirecting element is at least partially on the front face Fa.

6. An illuminable laminated glass element according to any one of claims 1 to 5, characterized in that the glass element comprises a light redirection element (8'), referred to as the lower redirection element, capable of redirecting light from the side of face F4 into the second sheet (2), the lower redirection element being reflective and facing face F3, in particular the lower redirection element being a reflective prismatic element comprising reflective prisms oriented towards the third face F3 or towards the second face F2 or the element lower redirector being transparent and on the F4 face side, notably prismatic.

7. Illuminatable laminated glass element according to the preceding claim, characterized in that the upper redirecting element is near a first edge of the coated substrate, preferably at least partially on the front face Fa, the lower redirecting element (8') is at the periphery of a so-called reference edge which is - the first edge, the lower redirecting element being opposite the rear face Fb, preferably offset towards the center with respect to the upper redirecting element - or an edge adjacent or opposite to the first edge, and in that the lower redirecting element is preferably: - at least partially opposite the optical insulating coating, - or at most 4mm away, preferably at most 1mm away, from the optical insulating coating.

8. Illuminatable laminated glass element according to any one of claims 6 or 7, characterized in that the upper redirecting element is near a first edge of the coated substrate and the glass element comprises another upper redirecting element (8) at the periphery of an edge opposite the first edge, capable of redirecting light, preferably emitted from the side of face F4, into the carrier film via the front face Fa, and even in that it comprises another lower redirecting element (8') at the periphery of an edge opposite the reference edge, capable of redirecting into the second sheet (2) light from the side of face F4, the other lower redirecting element being transparent on face F4 or reflective on face F3.

9. Illuminatable laminated glass element according to any one of the preceding claims, characterized in that - in a configuration a), the reflecting prisms of the upper redirecting element are wholly or partly offset from a first edge of the coated substrate, or - in a configuration b), the reflecting prisms of the upper redirecting element are wholly or partly in a marginal area of ​​the coated substrate on the front face Fa, in particular along a longitudinal or lateral edge of the coated substrate, the optical insulating coating being absent from said marginal area.

10. Illuminatable laminated vehicle glass element according to any one of the preceding claims, characterized in that the light extraction means (6) comprise a diffusing coating, preferably transparent, with a binder and diffusing particles, in particular on the lower interlayer (32) or on the second sheet (2) or on the optical insulating coating.

11. Illuminatable laminated vehicle glass element according to any one of the preceding claims, characterized in that it comprises between the upper interlayer (31) and the lower interlayer (32), above said optical insulating coating, an electro-controllable device (9), in particular with variable diffusion and / or tint, comprising an electroactive layer between a front electroconductive support on the second face F2 and a rear electroconductive support on the third face F3, or a photovoltaic device and preferably in that the lamination interlayer comprises an additional interlayer (33), the coated substrate (5',5) being sandwiched between the additional interlayer (33) and the lower interlayer (32).

12. Illuminatable laminated glass element according to one of the preceding claims, characterized in that it comprises: - a first light source (4) on face side F4, in particular a first set of light-emitting diodes, optically coupled to said upper redirecting element (8), - a second light source (4'), in particular a second set of light-emitting diodes optically coupled to the second glass sheet (2).

13. Illuminatable laminated glass element according to the preceding claim, characterized in that at least the first sheet has a first irregular lower longitudinal edge (10, 20), near a first edge of the coated substrate, having at least a first protruding portion called the first overhang, and in that the first light source, the upper redirecting element and the second light source extend below the lower visibility limit of the laminated glass element, at a distance from a fixing zone of the laminated glass element, intended to be coupled to a window lifting system, fixing zone connected to the first overhang.

14. Illuminatable laminated glass element according to claim 13, characterized in that the second sheet (2) is of reduced size, the edge of the second sheet called second edge is straight, in particular horizontal, and below the lower limit of visibility of the glazing, the second light source is under face F2 along the second edge for optical coupling by the second edge or the second sheet has a second irregular lower longitudinal edge having at least one protruding portion called second overhang opposite said first overhang, the first light source or even the second light source are on face F4 side.

15. Illuminatable laminated vehicle window according to any one of the preceding claims, characterized in that it comprises at least one of the following functional elements: - an internal, peripheral, opaque masking layer (7) between the second face F2 and the third face F3, and even covering the periphery of the optical insulating coating and even of the coated substrate, particularly in contact with the second face F2, in particular defining a clear view, - an internal, peripheral, opaque masking layer on the fourth face F3, in particular congruent with or of a width less than the width of the internal masking layer, - an internal peripheral opaque masking element, at the level of the upper redirecting element and / or a lower redirecting element, - an internal coating, reflecting infrared radiation such as a stack of silver layer(s), on the second face F2 on the first sheet or on an additional film, in particular a polymer,- an external coating (16), reflecting infrared radiation, such as a transparent conductive oxide layer stack, on the fourth face F4 of the second mineral glass sheet.

16. A vehicle, in particular a road vehicle, incorporating an illuminable laminated glass element according to one of the preceding claims, in particular a roof or side glazing, opening or fixed.

Images