WO2023160997A1

WO2023160997A1 - Illuminable glazing

Info

Publication number: WO2023160997A1
Application number: PCT/EP2023/052802
Authority: WO
Inventors: Jefferson DO ROSARIO; Achim ZEICHNER; Stephan Kremers
Original assignee: Saint-Gobain Glass France
Priority date: 2022-02-28
Filing date: 2023-02-06
Publication date: 2023-08-31
Also published as: CN116981561A

Abstract

The present invention relates to a glazing arrangement (10) at least comprising: - a first pane (1), comprising a first main surface (IV) and a second main surface (III), wherein the first pane (1) is provided in order to at least partially forward coupled-in light, wherein the first pane (1) is connected to a second pane (2) via an intermediate layer (3) to form a composite pane (101); - a light source (5.1) for generating light (3) that can be coupled into the first pane (1), which light source (5.1) is arranged in a recess (9) in the first pane (1); - a reflective cover (6) of the recess, wherein a filler material (7), which is permeable to the optical radiation, is arranged in the recess (9).

Description

Illuminatable glazing

The invention relates to a glazing assembly having a light source.

Motor vehicles have a light distribution in the interior, which provides for a discreet or conspicuous illumination of the interior, depending on requirements. The lighting not only provides orientation in the vehicle, but also creates a pleasant atmosphere for the occupants. Composite panes as glazing made from two or more glass or polymer panes are used in vehicles as windshields, rear windows, side windows and roof windows. In the case of illuminable or illuminated glazing, light from a light source is coupled into a flat light guide in the form of a pane of the glazing using total reflection.

WO 2010/049638 A1, WO 2013/053629 A1, WO 2014060409 A1 or WO 2015/095288 A2 disclose the coupling of light into a glass pane via a side surface. If the light source is placed very close to the edge of the glass, light can be coupled into the light guide very efficiently and over the entire width of the light guide. As a result, a very homogeneous, planar illumination can be achieved. It is known from WO2013/110885 A1, WO2018178591 A1 or WO2019/105855 A1 to arrange the light source in a recess and thereby couple the light into the pane. The recesses are usually arranged in one of the two glass panes of a composite pane and are hidden by an opaque imprint when looking at the other of the two glass panes. Depending on the opacity of this imprint, the light source is visible when looking at the other pane of glass and a slightly brighter ring of light appears around the point at which the light is coupled into the pane. This should be avoided for aesthetic reasons.

DE 102017 103296 A1 discloses a pane arrangement with an illumination device. The lighting device is attached to the disc body and includes a light source and a light guide layer that is attached to the disc body.

Glazing with an LED arranged in a recess is known from WO 2018/178591 A1. The glazing includes a light guide element. The object of the present invention is to provide an improved glazing assembly that has high efficiency and increased reliability.

This object is solved by a glazing arrangement according to claim 1 . Preferred embodiments emerge from the dependent claims.

The glazing assembly of the present invention includes a first pane having a first major surface and a second major surface. The first pane is connected to a second pane via an intermediate layer to form a composite pane. In this case, the first pane is provided for the purpose of at least partially forwarding coupled-in light. Furthermore, the glazing arrangement comprises a light source for generating light that can be coupled into the first pane, which light source is arranged in a recess in the first pane. Furthermore, the glazing arrangement comprises a cover for the recess and a filling material in the recess which is transparent to the optical radiation of the light source.

The filling material serves to embed the light source in the recess. This improves the coupling of the light emitted from the light source into the first pane. The glazing arrangement according to the invention achieves high efficiency and increased reliability, since the resulting light emerging from the light source enters the first pane in a targeted manner.

It is preferably provided that the filling material is formed from a hard, soft, deformable, gel-like and/or liquid material. In particular, the recess can be filled with a form fit by the deformable material, so that no disturbing scattered light can escape. The filling material can include, for example, silicone or resin, in particular synthetic resin.

The filling material in the recess can have a refractive index of 1.45 to 1.55. The refractive index of the filling material is selected in such a way that total reflection at the interfaces between the filling material and the first pane is avoided. In particular, the refractive index of the filling material np and the refractive index of the first pane ns are selected such that np s ns applies. The filling material particularly advantageously has a refractive index similar to that of glass.

In the context of the present invention, refractive indices are generally given in relation to a wavelength of 550 nm. The refractive index is basically independent of the measuring method, it can be determined, for example, by means of ellipsometry. Ellipsometers are commercially available. When determining the refractive index of the filling material, the same measuring method is used as when determining the refractive index of the first pane.

In a particularly preferred embodiment, the filler material is transparent. As a result, the light can be coupled particularly effectively into the first pane.

In a development of the invention, the filling material is additionally arranged around the recess on the first main surface of the first pane. For example, the filling material can protrude by about 2 mm to 50 mm, preferably 5 mm to 30 mm.

In an advantageous embodiment of a glazing arrangement according to the invention, the light source contains at least one light-emitting diode (LED), preferably at least one organic light-emitting diode (OLED), and/or at least one laser diode.

In a particularly preferred embodiment, the glazing arrangement also has a light guide in the recess. The light guide is provided for guiding the light so that the light generated by the light source enters the first pane. The light source and the light guide can be designed as a structural unit, in particular a module. In this case, the structural unit can have an LED circuit board which includes one or more LEDs. Furthermore, the LED circuit board can be designed as a printed circuit board (PCB). The light source preferably has a plurality of LEDs. This type of light source is particularly bright and effective. The assembly can be detachably arranged on the first pane. A reversibly closed opening of the recess to the (vehicle) interior can also be advantageous with regard to maintenance work on the structural unit. In this embodiment, the filling material serves to embed the light guide with the light source in the recess. This improves the coupling of the light emitted from the light source into the first pane. The glazing arrangement achieves high efficiency and increased reliability, since the resulting light emerging from the light guide enters the first pane in a targeted manner.

Depending on the variant, the cover, which is particularly reflective, can be disc-shaped, preferably made of aluminum. For example, the cover can be reflective and a highly reflective layer on top of the recess have facing side. Preferably, the cover is arranged on the second main surface (III) of the first pane, the reflective cover completely covering the recess. Preferably, the cover can be arranged around the recess. In this case, the cover can protrude by approximately 2 mm to 50 mm, preferably 5 mm to 30 mm.

The cover prevents moisture or components from the intermediate layer from diffusing into the recess. The cover is preferably designed as a metal foil or a metalized plastic foil. Metal foils reflect well and can effectively direct the light emitted in the area of the light source back into the first pane. The metal foil is preferably an aluminum foil. It goes without saying that films or layers of this type can also be arranged on carrier films, for example polymeric carrier films such as polyimide or polyethylene terephthalate (PET).

The cover is preferably connected directly to the second main surface of the first pane. It can be connected to the second main surface of the first pane, for example, via an adhesive layer. The cover is preferably additionally suitable for suppressing or redirecting light exiting the first pane into the first pane by reflection, preferably directed reflection, scattering, preferably diffuse scattering, or diffraction.

In a particularly preferred embodiment, a shielding element for shielding the light source is arranged between the reflecting cover and the second pane. In the installed position of the glazing arrangement, the shielding element shields the light source from the outside. In this case, the shielding element completely covers the reflective cover. The shielding element is arranged in the area of the light source, that is to say, when looking through the laminated pane, it overlaps the recess in which the light source with the light guide is arranged. The shielding element is thus arranged in a locally limited area, ie not over the entire surface of the laminated pane. Furthermore, the cover can be arranged around (on all sides) the recess and protrude approximately 2 mm to 50 mm, preferably 5 mm to 30 mm. In other words, the cover can have a larger cross-sectional area than the recess and/or the cover. This has the advantage that no light is emitted from the recess in the direction of the second pane and the recess is shielded particularly densely and stably. The shielding element can contain an opaque, preferably black, polyethylene (PET) film or a polyvinyl butyral (PVB) film. In the context of the invention, opaque means that a viewer cannot see through the film, the intermediate layer or the cover layer. The intermediate layer is preferably made of PVB. A shielding element made from PVB can therefore be integrated particularly well into an intermediate layer made from PVB. PET can be processed well as a colored film because it is compatible with common interlayer materials. The intermediate layer and the shielding element preferably have the same thickness.

The recess and the opaque shielding element can independently have any geometric shape, such as the shape of a circle, quadrilateral, triangle, square, rectangle, pentagon or another regular or irregular polygon.

In an advantageous embodiment of the glazing arrangement according to the invention, an opaque cover layer is arranged in a peripheral edge area on the second main surface (II) of the second pane. The cover layer can extend from the pane edge of the second pane over 1 mm to 500 mm, preferably 10 mm to 150 mm, particularly preferably 10 mm to 15 mm. In particular, the cover layer and the cutout overlap at least partially in the direction of looking through the laminated pane.

The cover layer is also referred to as cover print or black print. The masking print is formed from one ink. The cover layer can be formed from an opaque enamel, preferably applied as a screen print or as a digital print. The enamel can contain glass frits and/or mineral frits and optionally at least one pigment, preferably glass frits and/or mineral frits based on oxides selected from boron, bismuth, zinc, silicon, aluminum and sodium. The pigment provides the opacity of the cover layer. The pigment can be a black pigment, for example carbon black, aniline black, bone black, iron oxide black, spinel black and/or graphite. Alternatively, the covering layer can be in the form of an adhesive tape, in particular black, or a base layer, a so-called primer. The laminated pane can have several cover layers. The cover layers can have a layer thickness of 5 μm to 50 μm, particularly preferably from 8 μm to 25 μm.

The laminated pane has a see-through area in which the laminated pane has no cover layer. The see-through area of the laminated pane makes up at least 30%, preferably 50%, of the area of the laminated pane. Is the composite pane as one If the roof pane or windshield is formed, the see-through area can make up at least 70% or at least 80% of the area of the laminated pane.

In principle, all electrically insulating substrates that are thermally and chemically stable and dimensionally stable under the conditions of manufacture and use of the composite pane are suitable as the first pane and second pane.

The first pane and the second pane preferably contain glass, particularly preferably float glass made from clear glass, very particularly preferably diamond glass. Alternatively, the panes can also contain flat glass such as soda-lime glass, borosilicate glass or quartz glass, or clear plastics, rigid clear plastics, in particular polyethylene, polypropylene, polycarbonate, polymethyl methacrylate, polystyrene, polyamide, polyester, polyvinyl chloride and/or mixtures thereof. The first pane and/or second pane are preferably transparent, in particular for use of the panes as roof panes, windshields or rear panes of a vehicle or other uses where high light transmission is desired. In particular, at least the first pane and preferably also the second pane are made of clear glass.

A coating, in particular a pane or an object, is understood to be transparent if the coating, pane or object has a transmission in the visible spectral range of more than 20%, preferably 50%, particularly preferably more than 70%, in particular more than 85%. having.

However, for panes that are not in the driver's field of vision relevant to traffic, for example for roof panes, the transmission can also be much lower, for example greater than 5%. For this purpose, for example, the second pane and/or the intermediate layer can be tinted or colored.

The thickness of the first pane and the second pane can vary widely and can thus be perfectly adapted to the requirements of the individual case. Standard thicknesses of 1.0 mm to 25 mm, preferably 1.4 mm to 2.5 mm for vehicle glass and preferably 4 mm to 25 mm for furniture, appliances and buildings are preferably used. The size of the discs can vary widely and depends on the size of the use according to the invention. The first pane and second pane have areas of 200 cm ² up to 20 m ² , which are common in vehicle construction and architecture, for example. The composite pane can have any three-dimensional shape. The three-dimensional shape preferably has no shadow zones, so that it can be coated with further coatings, for example by sputtering. Preferably, the panes are planar or slightly or heavily curved in one or more directions of space. In particular, planar substrates are used. The discs can be colorless or colored.

The first pane and the second pane are connected to one another by at least the intermediate layer. The intermediate layer is preferably transparent or tinted or colored. The intermediate layer preferably contains or consists of at least one plastic, preferably polyvinyl butyral (PVB), ethylene vinyl acetate (EVA) and/or polyethylene terephthalate (PET). However, the intermediate layer can also be, for example, polyurethane (PU), polypropylene (PP), polyacrylate, polyethylene (PE), polycarbonate (PC), polymethyl methacrylate, polyvinyl chloride, polyacetate resin, casting resins, acrylates, fluorinated ethylene-propylene, polyvinyl fluoride and/or ethylene-tetrafluoroethylene , or contain copolymers or mixtures thereof. The intermediate layer can be formed by one film or by a plurality of films arranged one on top of the other, the thickness of a film preferably being from 0.025 mm to 1 mm, typically 0.38 mm or 0.76 mm. The intermediate layers can preferably be thermoplastic and, after lamination, can bond the first pane, the second pane and any further intermediate layers to one another. So-called acoustic-damping intermediate layers, which preferably consist of three layers of PVB, are particularly advantageous, with the middle layer being softer than the two outer layers.

The intermediate layer can also have a functional layer, in particular a layer that reflects infrared radiation, a layer that absorbs infrared radiation, a layer that absorbs UV radiation, a layer that is colored at least in sections and/or a layer that is tinted at least in sections. For example, the thermoplastic intermediate layer can also be a belt filter.

The terms “first pane” and “second pane” are chosen to distinguish between the two panes in a composite pane according to the invention. No statement about the geometric arrangement is connected with the terms. If the composite pane according to the invention is intended, for example, to separate the interior from the external environment in an opening, for example in a vehicle or a building, the first pane can face the interior or the external environment. In an advantageous embodiment of the glazing according to the invention, a light extraction means can be attached to/in at least one of the main surfaces, preferably on/in the second main surface of the first pane. The light coupled into the first pane is then coupled out of the first pane via the light coupling-out means and thus causes the first pane to light up there. The light outcoupling means is suitable for outcoupling part of the light guided in the first pane, preferably by scattering, reflection, refraction or diffraction, on at least one of the main surfaces of the first pane.

The light coupling-out means is advantageously arranged or incorporated in the first main surface and/or in the second main surface and/or within the first pane.

For this purpose, the light coupling-out means is introduced into the first main surface and/or into the second main surface, preferably by laser structuring, mechanical structuring such as sandblasting and/or by etching.

Alternatively or in combination, the light extraction means can be connected to the first main surface and/or to the second main surface of the first pane in a materially bonded manner, preferably by printing or gluing on an ink, a paste or particles, particularly preferably light-scattering, light-refracting or light-reflecting particles.

Alternatively or in combination, the light extraction means can comprise or consist of particles, particularly preferably light-scattering, light-refractive, light-diffracting or light-reflecting particles or cavities, which are arranged within the first pane.

In an advantageous embodiment, the composite pane is a roof pane of a motor vehicle and the first pane is the inner pane and the second pane is the outer pane. This achieves the technical advantage, for example, that the glazing arrangement is used at a particularly suitable location.

Furthermore, the first pane and/or the second pane can have other suitable coatings, for example an anti-reflection coating, an anti-stick coating, an anti-scratch coating, a photocatalytic coating, a sun protection coating and/or low-E coating. In a preferred embodiment, the second pane is provided on its second main surface with a transparent functional coating that includes electrically conductive layers. The transparent functional coating is preferably a sun protection coating. Sun protection coatings reflect parts of the sun's radiation in the near infrared spectrum and prevent it from penetrating into the vehicle interior and heating it up. They typically have one or more silver layers, which provide the IR-reflecting properties, as known, for example, from WO2013/104439A1 and from DE 19927683C1. Therefore, these layers are arranged on the side of the second pane facing the thermoplastic intermediate layer in order to protect it from corrosion and mechanical damage.

In a preferred embodiment, the first pane is provided with a Low-E coating on its first main surface. Low-E coatings are emissivity-reducing coatings and reflect IR radiation, especially thermal radiation, which emanates from a heated pane of glass. The penetration of thermal radiation into the vehicle interior is reduced, which also causes the interior to heat up less. In winter, when outside temperatures are low, the heat from the interior is prevented from radiating to the outside environment. Transparent emissivity-reducing coatings can contain, for example, reflective layers based on indium tin oxide (ITO) or other transparent conductive oxides (TCO), as known, for example, from WO2013/131667A1. When designed as a roof pane, these ensure that the heat radiation is reflected into the interior of the vehicle, which significantly increases the comfort for the vehicle occupants. The low-E coating preferably does not contain any silver layers and can therefore be arranged on the first main surface of the first pane without problems with corrosion.

In a preferred embodiment of the glazing arrangement according to the invention, a functional coating with electrically conductive layers, in particular silver layers, is arranged on the second main surface of the second pane. The opaque masking print is arranged in the edge area of the functional coating. That means the opaque masking print is printed directly onto the functional coating. The cover print is preferably formed from a printing ink that has decomposing properties compared to the functional coating. In this case, the advantages of the invention are particularly evident, since a masking print formed in this way often cannot sufficiently mask the light source when it is switched on. An additional measure, namely the shielding element according to the invention, is an excellent solution here. Furthermore, the glazing arrangement can optionally include further functional elements, in particular electronically controllable optical elements, for example PDLC elements, electrochromic elements or the like, which are typically arranged between the first pane and the second pane.

A further aspect of the invention comprises the glazing arrangement according to the invention, comprising a voltage source and control electronics which are connected to the light source. The light source can be controlled by the voltage source and control electronics so that it emits light when a voltage is applied to the light source.

In a further aspect, the present invention includes vehicles, in particular passenger cars, with a glazing arrangement according to the invention.

In a further aspect, the present invention comprises a method for producing a glazing arrangement according to the invention, at least comprising:

• Providing a first pane, a second pane and an in particular thermoplastic intermediate layer,

• Creation of at least one recess in the first pane,

• arranging the cover on the recess,

• connecting the first pane and the second pane via the thermoplastic intermediate layer, so that the second main surface (III) of the first pane faces the thermoplastic intermediate layer,

• Filling the recess with the filling material that is permeable to optical radiation,

• arranging at least one light source in the recess.

The first pane and the second pane are laminated together via the intermediate layer, for example by autoclave processes, vacuum bag processes, vacuum ring processes, calendering processes, vacuum laminators, or combinations thereof. The pane is usually connected under the action of heat, vacuum and/or pressure.

The recess can be produced by a wide variety of methods for drilling or cutting glass that are known to those skilled in the art. Preferably, the first pane and the second pane comprise glass. The recess is made in the pane using a laser process. This is particularly advantageous since laser processes can be carried out without mechanical processing steps, such as breaking by mechanical pressure. As a result, the pane of glass is cut gently so that smooth cut edges are formed without any disruptive damage. Processing using a laser process is particularly useful when using thin glass panes (thickness less than or equal to 1.4 mm).

The thermoplastic intermediate layer is preferably provided as a film.

In a particularly preferred embodiment of the method, a light guide is arranged in the recess together with the light source. The light source and the light guide can be designed as a structural unit, in particular a module. In this case, the structural unit can have an LED circuit board which includes one or more LEDs.

The present invention also includes the use of the glazing arrangement according to the invention in means of transportation for traffic on land, in the air or on water, in particular in motor vehicles, for example as a roof window, rear window and/or side window.

Within the scope of the present invention, all the embodiments that are mentioned for individual features can also be freely combined with one another, provided they are not contradictory.

The invention is explained in more detail below with reference to figures and exemplary embodiments. The figures are a schematic representation and are not drawn to scale. The figures do not limit the invention in any way.

Show it:

FIG. 1 shows a top view of an embodiment of a composite pane according to the invention using the example of a roof pane of a vehicle,

FIG. 2 shows a schematic cross-sectional representation of a first embodiment of the glazing arrangement according to the invention without a filling material, and

FIG. 3 shows a schematic cross-sectional representation of a second embodiment of the glazing arrangement according to the invention with filling material,

FIG. 4 shows a schematic cross-sectional representation of a third embodiment of the glazing arrangement according to the invention with a shielding element,

FIG. 5 shows a schematic cross-sectional representation of a fourth embodiment of the glazing arrangement according to the invention.

Specifications with numerical values are generally not to be understood as exact values, but also include a tolerance of +/- 1% to +/- 10%.

FIG. 1 shows a plan view of an embodiment of a glazing arrangement 10 according to the invention. The glazing arrangement 10 comprises a laminated pane 101 and at least one structural unit 5. The glazing arrangement 10 can be a roof pane for a vehicle, for example. Alternatively, the glazing assembly 10 may be architectural glazing or a component of furniture or electrical equipment. The glazing arrangement 10 can also be part of insulating glazing and serve, for example, as an outer or inner pane in a window of a building. Furthermore, the glazing arrangement 10 can be installed in an interior space and can be used, for example, as glazing for a conference room.

The glazing arrangement 10 comprises the laminated pane 101 and two structural units 5, each with a light source 5.1. The light sources 5.1 are intended to emit light in the visible range. Alternatively, they can emit infrared or ultraviolet light.

The laminated pane 101 also has four light extraction means 11 . A light decoupling means 11 decouples light from the laminated pane 101 . The Light extraction means 11 are arranged on a first main surface (IV) of the laminated pane 101 . At the point at which a light extraction means 11 is arranged, the light can emerge from the laminated pane 101 via the main surface (IV).

The light extraction means 11 can be arranged at any point on the first main surface (IV). In FIG. 1, the light decoupling means 1 includes structuring of the main surface IV, at which the total reflection within the laminated pane 101 is prevented and light emerges from the laminated pane 101 via the main surface (IV). The light extraction means 11 can include an imprint on the first main surface (IV) or light-scattering, light-refracting, light-diffracting or light-reflecting particles or cavities introduced into the laminated pane 101 .

In the present exemplary embodiment, the light extraction means 11 is designed as an imprint of fine, light-scattering particles on the main surface (IV). This interrupts the total reflection of a light beam at the interface between composite pane 101 and the surrounding air and light is coupled out of composite pane 101 by scattering.

The laminated pane 101 has a see-through area 15 and an edge area 16 . A covering layer 4 is arranged in the edge region 16 . The composite pane 101 also includes a peripheral pane edge 17. The cover layer 4 extends all the way around the entire peripheral pane edge 17. In this embodiment, the cover layer 4 extends like a frame in the edge area 16 of the composite pane 101. The cover layer 16 frames the viewing area 12.

Alternatively, the cover layer 4 can be arranged at least in sections along the peripheral edge 12 of the pane. The width of the edge area 16 can vary. In this embodiment, the width of the edge area 16 is measured from the pane edge 12 and is, for example, 10 mm, 50 mm or 100 mm.

The laminated pane 101 has a see-through area 15 in which the laminated pane 101 has no covering layer. The see-through area 15 of the laminated pane 101 makes up at least 70% of the surface of the laminated pane.

FIG. 2 shows a cross-sectional illustration of the glazing arrangement 10 according to the invention from FIG. The first disc 1 , the Intermediate layer 3 and the second pane 6 were connected to one another by lamination, in particular in an autoclave. The first pane 1 has a first main surface IV and a second main surface III opposite the first main surface IV. The second pane 2 has a first main surface I and a second main surface II opposite the first main surface I .

The side surfaces of the laminated pane 101 are arranged orthogonally to the main surfaces III, IV. The first pane 1 and the second pane 2 consist, for example, of soda-lime glass. The intermediate layer 3 is thermoplastic and formed, for example, from a 0.76 mm thick PVB film. The thickness of the first pane 1 is 1.6 mm, for example, and the thickness of the second pane 2 is 2.1 mm. The first disk 1 and the second disk

However, 2 can also have any thickness, for example the same thickness. The compound pane 101 is delimited by four circumferential side surfaces.

The first pane 1 can comprise toughened, partially toughened or non-toughened glass. Alternatively, the first pane 1 can be made of a plastic, for example made of polycarbonate. The first pane 1, the second pane 2 and the intermediate layer

3, for example, are clear (not tinted or colored). Alternatively, the intermediate layer 3 can have a tinted, in particular a dark tint (grey, brown, blue) or colored PVB film. Alternatively or additionally, the second pane 2 can be tinted dark (grey, brown, blue).

The first pane 1 has a recess 9 into which the structural unit 5 protrudes. The recess 9 extends continuously from the first main surface IV of the first pane 1 to the second main surface III of the first pane 1. To seal the recess 9 (in the installed position of the composite pane) above the recess on the second main surface III of the first pane 1 is a Cover 6 attached in the form of an aluminum foil or disc using an adhesive tape. In addition to improving long-term stability by protecting against moisture diffusion, for example, the cover 6, due to its good reflective properties, directs light from a light source 5.1 back into the first pane 1 and thus increases the total amount of coupled light.

The structural unit 5 includes the light sources 5.1 and a light guide 5.2. The structural unit 5 can be a so-called LED module. The intermediate layer 3 was not removed in the area of the cutout 9 . The light source 5.1 is located entirely within the laminated pane 101. The light source 5.1 is preferably an LED. The light source 5.1 can have one or more Light emitting diodes (LED, LED light) include. A light source 5.1 can also include an organic light-emitting diode (OLED).

The light emitted by the light source 5.1 is directed in the direction of the pane 1 and reaches the first pane 1 via the light guide 5.2. The pane 1 is intended to forward the coupled-in light through the pane 1 in the longitudinal direction.

The first pane 1 is preferably an inner pane and the second pane 2 is an outer pane. In the installed position, the inner pane faces an interior space. In the installed position, the outer pane faces the outside environment (e.g. of a vehicle). This arrangement is particularly advantageous because of the position of the light sources 5.1 in the first pane 1, since the light is coupled out in the direction of a (vehicle) interior, which leads to a pleasant atmosphere in the interior. Alternatively, the second pane 2 can also represent the inner pane and the first pane 1 the outer pane.

A first cover layer 4 and a second cover layer 4 are applied to the first main surface IV of the first pane 1 and to the second main surface II of the second pane 2 . The covering layers 4 are opaque, dark, in particular black or grey. The covering layer 4 is formed from a printing ink. Since it is not desirable for light to be coupled out at the edges of the composite pane 101 , the edge region 16 of the first pane 1 has the covering layer 4 .

In addition, the second opaque, dark, in particular black or gray black covering layer 4 is arranged on the second main surface II of the second pane 2 . In particular, the first covering layer 4 and the second covering layer 4 overlap in the viewing direction of the laminated pane 101. The recess 9 is covered by the second covering layer 4 in the viewing direction. The first and second cover layers 4 are peripheral, i.e. frame-like, cover prints. The covering layers 4 can be designed to be opaque, opaque and/or over the entire surface.

The first covering layer 4 and the second covering layer 4 contain pigments and glass frits. They may contain other chemical compounds. The glass frits can be melted on or on and the covering layer 4 can thereby be permanently connected (fused or sintered) to the glass surface. The pigment ensures the opacity of the covering layer 4. Such covering layers are applied as an enamel. Alternatively can the first covering layer 4 and/or the second covering layer 4 can be in the form of an adhesive tape, color layer or primer. The adhesive tape, color coat and primer are preferably black.

FIG. 3 shows a schematic cross-sectional illustration of a second embodiment of the glazing arrangement 10 according to the invention. The glazing arrangement 10 shown in FIG. 3 is particularly suitable as a roof pane of a motor vehicle. The glazing arrangement 10 from FIG. 3 has a structure similar to the glazing arrangement 10 from FIG. 2. The second pane 6 (outer pane) is the same as the pane 6 from FIG. The filling material 7 serves to embed the light guide 5.2 with the light source 5.1 in the recess 9. This improves the coupling of the light emitted from the light source 5.1 into the first pane 1. The glazing arrangement 10 thereby achieves high efficiency and increased reliability, since the resulting light emerging from the light guide 5.2 enters the first pane 1 in a targeted manner.

The filling material 7 is made of a deformable material. The filling material 7 is transparent. The transparent filling material 7 fills the recess in a form-fitting manner. The filling material 7 can, for example, comprise silicone or resin, in particular synthetic resin. In addition, the filling material 7 is arranged around the recess 9 on the first main surface IV of the first pane 1 . For example, the filling material can protrude by about 10 mm or 15 mm.

The filling material 7 has a refractive index of 1.50. The refractive index of the filling material is the same as the refractive index of the first pane 1. The refractive index of the filling material 7 is selected in such a way that total reflection at the boundary surfaces of the light guide 5.2 and the first pane 1 is avoided.

FIG. 4 shows a schematic cross-sectional representation of a further embodiment of the glazing arrangement 10 according to the invention. The glazing arrangement 10 shown in FIG. 4 is particularly suitable as a roof pane of a motor vehicle. The glazing arrangement 10 from FIG. 4 has a structure similar to the glazing arrangement 10 from FIG. 3. In contrast to FIG. In the installation position of the glazing arrangement 10 as a roof pane of a vehicle, the shielding element 8 is arranged above the cover 6 . The shielding element 8 protrudes around the recess 9 by the distance of 3 mm shown.

The shielding element 8 is designed as a black PVB film that is inserted between two 0.38 mm thick PVB partial layers 3.1 and 3.2 of the thermoplastic intermediate layer 3. The shielding element 8 is based on the same material as the thermoplastic intermediate layer 3. This prevents material incompatibilities and possible different changes in size of the film used and the intermediate layer after lamination. Thanks to the shielding element 8 arranged according to the invention, the occurrence of a light glimmer in the area of the light source 5.1 is also prevented in this case. The cover 6 is arranged below the shielding element 8 and is attached directly to the second main surface III of the first pane 1 .

FIG. 5 shows a schematic cross-sectional representation of a further embodiment of the glazing arrangement 10 according to the invention. The glazing arrangement 10 shown in FIG. 5 is particularly suitable as a roof pane of a motor vehicle. The glazing assembly 10 of Figure 5 is similar in construction to the glazing assembly 10 of Figure 4.

The shielding element 8 is designed as a black PVB film that is inserted in the intermediate layer 3 that is 0.76 mm thick. The shielding element 8 is based on the same material as the thermoplastic intermediate layer 3. This prevents material incompatibilities and possible different changes in size of the film used and the intermediate layer after lamination. Thanks to the shielding element 8 arranged according to the invention, the occurrence of a light glimmer in the area of the light source 5.1 is also prevented in this case. The cover 6 is arranged below the shielding element 8 and is attached directly to the second main surface III of the first pane 1 .

Reference list:

1 first disc

2 second disc

3 intermediate layer

3.1 first sub-layer

3.2 second sub-layer

4 cover layer

5 assembly

5.1 Light source

5.2 Light Guide

6 cover

7 filling material

8 shielding element

9 recess

10 Glazing Assembly

15 see-through area

16 edge area

17 disc edge

101 compound pane

I first major surface of the second disc 2

11 second main surface of the second disc 2

III second main surface of the first disc 1

IV first major surface of the first disc 1

Claims

Patent claims Glazing arrangement at least comprising: a first pane (1) with a first main surface (IV) and a second main surface (III), wherein the first pane (1) is intended to at least partially transmit coupled light, and wherein the first pane (1 ) is connected via an intermediate layer (3) to a second pane (2) to form a composite pane (101), a light source (5.1) for generating light (3) that can be coupled into the first pane (1), which is arranged in a recess (9 ) of the first pane (1) is arranged, a cover (6) of the recess (9), wherein a for the optical radiation of the light source (5.1) permeable filling material (7) is arranged in the recess (9). Glazing arrangement according to claim 1, wherein a refractive index of the filling material is selected such that total reflection at the interfaces of the filling material (7) and the first pane (1) is avoided, in particular the refractive index of the filling compound is less than or equal to a refractive index of the first pane (1) . A glazing assembly as claimed in claim 1 or 2, wherein the filler material (7) is formed from a hard, soft, deformable, gel or liquid material. A glazing assembly as claimed in any one of the preceding claims, wherein the

Filling material (7) silicone or resin, in particular synthetic resin. A glazing assembly as claimed in any one of the preceding claims, wherein the

Filling material (7) has a refractive index of 1.45 to 1.55. A glazing assembly as claimed in any one of the preceding claims, wherein a

Light guide (5.2) is provided for guiding the light, so that from the light source

(5.1) light generated enters the first pane (1). Glazing assembly according to claim 6, wherein the light source (5.1) and the light guide

(5.2) are designed as a structural unit (5), in particular a module. 8. A glazing assembly according to claim 7, wherein the assembly (5) is removably mounted on the first pane (1).

9. Glazing arrangement according to one of the preceding claims, wherein the cover (6) is designed to be reflective and wherein the particularly reflective cover (6) is disc-shaped, preferably made of aluminum.

10. Glazing arrangement according to one of the preceding claims, wherein a shielding element (8) for shielding the light source (5.1) is arranged between the cover (6) and the second pane (2).

11. Glazing arrangement according to claim 10, wherein the screening element (8) is an opaque, preferably black, film.

12. Glazing arrangement according to one of claims 10 or 11, wherein the shielding element (8) is a polyethylene (PET) film or a polyvinyl butyral (PVB) film.

13. Glazing arrangement according to one of claims 10 to 12, wherein the intermediate layer (3) and the screening element (8) have the same thickness.

14. Glazing arrangement according to one of the preceding claims, wherein at least one opaque cover layer (4) is arranged in a peripheral edge region (9) at least on the second main surface (II) of the second pane (2).

A glazing assembly according to any one of the preceding claims wherein the laminated pane (101) is a roof pane of a motor vehicle and the first pane (1) is the inner pane and the second pane (6) is the outer pane.

16. Vehicle, in particular passenger car, with a glazing arrangement according to one of the preceding claims. A method of manufacturing a glazing assembly (10) according to any one of claims 1 to 15 at least comprising:

Providing a first pane (1), a second pane (2) and an in particular thermoplastic intermediate layer (5),

Creating at least one recess (9) in the first pane (1),

- arranging the cover (6) on the recess (9),

Connecting the first pane (1) and the second pane (6) via the thermoplastic intermediate layer (5) so that the second main surface (III) of the first pane (6) faces the thermoplastic intermediate layer (5), filling the recess (9) with the filling material which is permeable to optical radiation,

- Arranging at least one light source (5.1) in the recess (9).