CN117136137A - Vehicle sunroof glass with integrated light source - Google Patents

Vehicle sunroof glass with integrated light source Download PDF

Info

Publication number
CN117136137A
CN117136137A CN202380008518.7A CN202380008518A CN117136137A CN 117136137 A CN117136137 A CN 117136137A CN 202380008518 A CN202380008518 A CN 202380008518A CN 117136137 A CN117136137 A CN 117136137A
Authority
CN
China
Prior art keywords
light source
optical element
glass
glass pane
vehicle sunroof
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202380008518.7A
Other languages
Chinese (zh)
Inventor
T·尼尔森
P·韦伯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saint Gobain Glass France SAS
Original Assignee
Saint Gobain Glass France SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saint Gobain Glass France SAS filed Critical Saint Gobain Glass France SAS
Publication of CN117136137A publication Critical patent/CN117136137A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10174—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
    • B32B17/10183—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer being not continuous, e.g. in edge regions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10174—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
    • B32B17/10201—Dielectric coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10174—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
    • B32B17/10201—Dielectric coatings
    • B32B17/10211—Doped dielectric layer, electrically conductive, e.g. SnO2:F
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10174—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
    • B32B17/1022—Metallic coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10174—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
    • B32B17/1022—Metallic coatings
    • B32B17/10229—Metallic layers sandwiched by dielectric layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10247—Laminated safety glass or glazing containing decorations or patterns for aesthetic reasons
    • B32B17/10256—Laminated safety glass or glazing containing decorations or patterns for aesthetic reasons created by printing techniques
    • B32B17/10266—Laminated safety glass or glazing containing decorations or patterns for aesthetic reasons created by printing techniques on glass pane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10293—Edge features, e.g. inserts or holes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10339—Specific parts of the laminated safety glass or glazing being colored or tinted
    • B32B17/10348—Specific parts of the laminated safety glass or glazing being colored or tinted comprising an obscuration band
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10541—Functional features of the laminated safety glass or glazing comprising a light source or a light guide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10761—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing vinyl acetal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/1077—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing polyurethane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10788—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing ethylene vinylacetate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10807—Making laminated safety glass or glazing; Apparatus therefor
    • B32B17/10899—Making laminated safety glass or glazing; Apparatus therefor by introducing interlayers of synthetic resin
    • B32B17/10935—Making laminated safety glass or glazing; Apparatus therefor by introducing interlayers of synthetic resin as a preformed layer, e.g. formed by extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/20—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors for lighting specific fittings of passenger or driving compartments; mounted on specific fittings of passenger or driving compartments
    • B60Q3/208—Sun roofs; Windows
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/70—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by the purpose
    • B60Q3/76—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by the purpose for spotlighting, e.g. reading lamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/80—Circuits; Control arrangements
    • B60Q3/82—Switches specially adapted for vehicle interior lighting, e.g. switching by tilting the lens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/44—Number of layers variable across the laminate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/20—Inorganic coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/20—Inorganic coating
    • B32B2255/205—Metallic coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/28—Multiple coating on one surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/202—Conductive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/204—Di-electric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/402—Coloured
    • B32B2307/4023—Coloured on the layer surface, e.g. ink
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/41—Opaque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/003—Interior finishings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)

Abstract

The invention relates to a vehicle sunroof glass comprising an outer glass pane (1) and an inner glass pane (2) which are connected to one another by a thermoplastic intermediate layer (3) and which have at least one recess (A) which is formed at least by a through-opening through the inner glass pane (2) and which extends from there optionally into the intermediate layer (3) or through the intermediate layer (3), wherein a light source (4) and an optical element (5) are inserted into the recess (A) such that the light source (4) has a smaller distance from the outer glass pane (1) than the optical element (5) and the light source (4) is directed towards the optical element (5), and wherein the vehicle sunroof glass is further provided with electrical leads (6.1, 62) which are connected to the light source (4).

Description

Vehicle sunroof glass with integrated light source
The invention relates to a vehicle sunroof glass with an integrated light source, which is provided in particular as a reading light. The invention also relates to the manufacture and use of said vehicle sunroof glass.
Many vehicles are equipped with a light source in the roof area that is directed to the interior space. The light source can, for example, act as a reading light for the vehicle occupants, wherein each vehicle occupant is preferably assigned an own light source which can be operated independently of the other light sources. Positioning of the light source is sometimes a problem if the vehicle is equipped with a sunroof glass. These can be integrated in the roof lining on the side of the roof window pane. However, to achieve more advantageous positioning and attractive aesthetics, it may be desirable to integrate the light source directly into the vehicle sunroof glass.
WO2019105855 discloses a composite glass sheet with a recess for an integrated electronic component, wherein the recess comprises a laser drilled through-part passing through the inner glass sheet. WO2017029384, WO2018/002707 and WO2018002723 disclose a composite glass sheet having capacitive buttons for controlling an integrated light source.
WO2021025651 discloses a glass sheet with a emissivity reducing coating, wherein electrical leads for a light source arranged on the coating are formed by the coating.
It is an object of the present invention to provide a vehicle sunroof glass having at least one integrated light source. The vehicle sunroof glass should be aesthetically attractive and ensure easy access to the light source for maintenance or replacement purposes. If there are a plurality of light sources, they should preferably be independent of each other and operate as intuitively as possible.
The object of the invention is achieved by a vehicle sunroof glass according to independent claim 1. Preferred embodiments are evident from the dependent claims.
The vehicle sunroof glass according to the invention is a composite glass sheet. It comprises an outer glass pane and an inner glass pane, which are connected to each other by an intermediate layer. Vehicle sunroof glass is provided for separating a vehicle interior space from an external environment in a window opening, i.e., a sunroof glass opening of a vehicle. In the sense of the present invention, an inner glass pane refers to a glass pane facing the inner space. An outer glass pane refers to a glass pane that is oriented towards the outside environment. The outer and inner glass sheets have outer and inner space side surfaces, respectively, and surrounding side edges extending therebetween. In the sense of the present invention, the outer side surface refers to that main surface which is provided for facing the external environment in the mounted position. In the sense of the invention, the inner space side surface refers to that main surface which is provided for facing the inner space in the mounted position. The inner space side surface of the outer glass plate and the outer side surface of the inner glass plate face each other and are connected to each other by a thermoplastic interlayer.
According to the invention, the vehicle sunroof glass has at least one groove. The groove extends into the composite glass sheet from the inner space side surface of the inner glass sheet. The groove is formed at least by a through portion passing through the inner glass plate. The through-hole may also be referred to as a hole in the inner glass plate; it extends from the inner space side surface of the inner glass sheet through the entire inner glass sheet to the outer side surface of the inner glass sheet. The groove according to the present invention may be formed only by the penetration through the inner glass plate. However, it may also optionally extend from the through-opening of the inner glass pane into the intermediate layer or through the entire intermediate layer. If the grooves extend into the interlayer, the portion of the interlayer adjoining the inner glass sheet or the layer adjoining the inner glass sheet also has grooves which terminate in blind holes in the interlayer. If the groove extends through the interlayer, there is a through-going portion through the entire interlayer—in this case, the groove is a through-going portion through the inner glass sheet and the interlayer, which extends from the inner space side surface of the inner glass sheet through the entire inner glass sheet and the entire interlayer, to the inner space side surface of the outer glass sheet.
According to the invention, the light source and the optical element are fitted into the recess. When the vehicle sunroof glass is used as intended, the light source is directed to the vehicle interior space. The light source here has a smaller distance from the outer pane than the optical element. It follows that it is directed towards the optical element. Accordingly, the light source is arranged with its intended emission direction toward the optical element, the inner space side surface of the inner glass plate and the vehicle interior space, so that the radiation of the light source passes through the optical element and is emitted from the composite glass plate or the groove via the inner space side surface of the inner glass plate toward the direction of the vehicle interior space. The electrical contacts of the light source are preferably arranged on the side of the light source opposite the emission direction and facing the outer glass pane.
According to the invention, the vehicle sunroof glass is further provided with an electrical lead which is electrically conductively connected to the light source. The electrical leads are used to power the light source. They are conductively connected to contacts of the light source.
In a preferred embodiment, the vehicle sunroof glass is provided with a plurality of grooves according to the invention, wherein in each groove a light source and an optical element are accommodated in a manner according to the invention. The light sources of the individual recesses are preferably in electrical contact with one another independently of one another by means of the individual electrical conductors, so that they can be operated independently of one another, in particular can be switched on and off independently of one another.
In a preferred embodiment, the light source according to the invention is used as a reading light for a vehicle occupant. If a plurality of recesses with light sources are present, they are preferably arranged on the sun roof glass and distributed over the sun roof glass, so that each vehicle occupant (for example two or three co-workers on the driver, co-driver and rear seat of the vehicle) is assigned a reading light. The light sources assigned to the respective occupants are each arranged in the area of the sunroof glass above its seat in the installed position of the sunroof glass.
The recess with the light source (or all recesses with the light source, if there are a plurality of recesses) is preferably arranged in a transparent see-through region of the vehicle sunroof glass. In the case of vehicle sunroof glass, this transparent see-through region is generally surrounded in a frame-like manner by an opaque masking region. In the sense of the present invention, the masking region refers to a region of the sunroof glass that is not transparent to it. The light transmittance of the masked area is preferably substantially 0%. In the sense of the present invention, see-through region means a region of the sun roof glass which can be seen through and thus has a certain transparency or at least translucency. The light transmittance of the see-through region is preferably at least 5%, particularly preferably at least 10%. The desired transmittance may be achieved by, inter alia, coloring the outer glass pane, the inner glass pane and/or the intermediate layer. The light transmittance is in particular the common total transmittance used for characterization in the field of vehicles, as determined by the motor vehicle glazing light transmittance test method specified by ECE-R43, appendix 3, +.9.1. The masking region is arranged in a circumferential peripheral region of the sunroof glass. The masking zone is mainly used to protect the adhesive used to bond the sunroof glass to the vehicle body from UV radiation. Furthermore, possible electrical connections in the masking region can be masked. The masking region is usually formed by an opaque, in particular black, print (cover print), in particular on the inner space-side surface of the outer pane and/or on the inner space-side surface of the inner pane. The covering print is generally composed of an enamel applied by screen printing and subsequently baked, said enamel comprising a glass frit and a colorant, in particular a pigment. The pigment is typically a black pigment, such as pigment black (carbon black), aniline black, bone black, iron oxide black, spinel black and/or graphite. The thickness of the overlay print is preferably 5 μm to 50 μm, particularly preferably 8 μm to 25 μm. Alternatively, however, the masked areas may also be formed by opaque portions of the thermoplastic intermediate layer, for example by using a heavily colored or printed polymer film.
The through-opening through the inner glass pane preferably has a circular, in particular annular, base surface in the plane of the inner space side and the outer side surface of the inner glass pane. It has in general the shape of a cylinder, in particular a cylinder, in the case of a constant cross-sectional area or a truncated cone, in particular a cone, in the case of a continuously varying cross-sectional area. The through-hole is delimited by a circumferential edge surface. The edge surfaces form the sides of the cylinder or truncated cone, while the bottom surface is given by the inlet and outlet openings of the through-going part in the outer side surface and the inner space side surface of the inner glass plate. The through-penetration through the inner glass pane is preferably produced by laser drilling.
The optical element is used for beam shaping of the light beam emitted from the light source and is designed appropriately for this purpose. The optical element is typically a lens. In particular, the light radiation emitted from a light source which can be handled approximately as a point source is bundled by the optical element such that it is concentrated on a predetermined beam region. In a preferred embodiment, the optical element is formed as a fresnel lens (in particular in the manner of a headlight lens) or as a TIR lens (TIR: total internal reflection). The fresnel lens bundles light emitted from the light source in the optical axis direction. The TIR lens consists of a core material and a jacket material surrounding it. The core material has a higher refractive index than the sheath material. The light beam is then totally reflected at the transition between the core material and the jacket material and remains within the TIR lens acting as an optical waveguide. TIR lenses are therefore also used to bundle or collimate the optical radiation towards the optical axis (i.e. to align and eject the light beams in parallel).
The optical element is preferably made of a transparent polymer. Such polymeric optical elements are inexpensive and lightweight. Since there is generally no too high requirement for the optical quality of the optical element, these requirements can be met with polymeric optical elements. If the optical element is transparent, it is advantageously unobtrusive and only insignificantly affects the perspective through the sunroof glass. The transparent polymer is preferably Polycarbonate (PC), polymethyl methacrylate (PMMA) or polyethylene terephthalate (PET). Alternatively, however, the optical element may also be made of glass, for example.
The optical element is preferably inserted into the recess in a non-destructive detachable manner, in particular clamped or engaged in a through-opening through the inner glass pane and is thereby stably fixed in the recess according to the invention.
The light source is preferably a light-emitting diode (LED). The electroluminescent material of the light-emitting diode may be, for example, an inorganic semiconductor or an organic semiconductor. In the latter case, organic light emitting diodes (OLED, organic light emitting diode) are also mentioned.
The light source is electrically connected to the electrical leads, for example by solder or conductive adhesive. Furthermore, the mechanical fixing of the light source in the sun roof glass by means of solder or adhesive is sufficient, since the light source is generally light in weight. However, the light source may be mechanically fixed by additional measures, such as additional adhesive or clamping-or engagement means. It is also possible to combine the light source and the optical element into one single component, for example by fixing the LED in a polymer lamp holder which also contains the optical element. In this case, the optical element may be formed integrally with the lamp base or may likewise be fixed in the lamp base.
In an advantageous embodiment, the edge surfaces of the through-going parts passing through the inner glass pane are exposed. Thus, it is not covered by further elements. In this case, the optical element is in direct contact with the edge surface of the through-hole, in particular is directly inserted into the through-hole. The connection between the through-going part and the optical element is preferably non-destructive detachable; in particular, the optical element is clamped directly in the through-opening. For this purpose, the optical elements can be laterally provided with flexible, elastically deformable stop lugs (Rastnasen), which are pressed to be inserted and then released, so that they bear in a force-fitting manner against the edge surfaces of the through-opening and fix the optical elements in the through-opening. In a preferred embodiment, the through-opening through the inner glass pane is formed in a conical shape, i.e. in the shape of a truncated cone, more precisely in such a way that it tapers from the outer surface of the inner glass pane to the inner space-side surface of the inner glass pane. Therefore, the opening of the through portion in the outer side surface has a larger area than the opening of the through portion in the inner space side surface. The cross-sectional area of the through-hole decreases in particular continuously from the outer surface of the inner glass pane toward the inner space-side surface of the inner glass pane. This has the advantage that the optical element to be clamped is also more stably fixed in the through-hole. Alternatively, however, the optical element may also be fixed in the through-hole, for example by means of an adhesive.
In a further advantageous embodiment, the through-hole through the inner glass pane has a lamp base. The lamp base covers the circumferential edge surface of the through-opening and can extend from there also to the outer side of the inner glass pane and/or to the peripheral region of the inner space-side surface. The lamp base in turn has a through-opening or recess in which the optical element is inserted, preferably in a non-destructive manner, in particular by screwing/screwing, clamping or engagement, alternatively for example by gluing or welding.
It is also particularly preferred here to connect the optical element to the lamp base by clamping or engagement, since these connections can be removed without damage on the one handAnd on the other hand can be disassembled very quickly and without complexity (compared to, for example, a screw connection). For this purpose, as described above, the optical elements may be provided laterally with flexible, elastically deformable stop lugs, which are pressed to be inserted and then released and thereby fixed in the through-holes or recesses of the lamp base. The connection may be force-locking, wherein the braking lugs rest against the edge surfaces of the through-opening of the lamp base. In this case, the through-opening or recess of the lamp base is also preferably formed in a conical shape, i.e. in the shape of a truncated cone, more precisely in such a way that it tapers from the outer surface of the inner glass plate to the inner space-side surface of the inner glass plate. Alternatively, if the edge surfaces of the through-portion or the recess of the lamp holder are formed with complementary engagement openings ) The engagement of the detent lugs of the optical element into these engagement openings can then be positive-locking. The opposite embodiment is also possible, wherein the edge surface is formed with a detent lug and the optical element is formed with a complementary engagement opening, or wherein the detent lug of the lamp holder is closed on the optical element.
The lampholder may be used alone to house the optical elements. Alternatively, however, the light source may also be incorporated into the lamp holder. In this case, the lamp base preferably has electrical contact surfaces which are suitable for supplying the installed light source with voltage. The lamp base also preferably has electrical connection leads between the contact surfaces and the electrical connection surfaces. The connection surface is in contact with the electrical conductor according to the invention in order to supply the contact surface with an electrical voltage. The lamp base preferably does not have a through-hole, but rather has a pocket-like depression (recess in the form of a blind hole) extending from the inner space-side surface of the inner glass pane to the bottom surface. The electrical contact surface is preferably arranged in the bottom surface. The light source can be easily inserted or engaged into the lamp holder if it is suitably formed and/or connected with the contact surface via solder or conductive adhesive.
The lamp base is preferably made of a polymer, particularly preferably a transparent polymer. Suitable transparent polymers are, for example, polycarbonate (PC), PMMA, PET or polyamide.
In combination, the optical element is therefore preferably
The clamping is carried out in a force-locking manner directly in the through-hole,
force-locking clamping in a lamp socket covering the edge surface of the through-hole, or
Engaging in a form-locking manner with a lamp base covering the edge surface of the through-opening,
for this purpose, the optical element or the lamp base is provided with a (in particular flexible, elastically deformable) braking lug. If the optical elements are provided with detent lugs, they are in direct contact with the edge surfaces of the through-opening (if the optical element is clamped in the through-opening in a force-fitting manner) or with the edge surfaces of the recess of the lamp base (if the optical element is clamped in the lamp base in a force-fitting manner), or engage in complementary engagement openings of the lamp base (if the optical element is engaged in the lamp base in a force-fitting manner). If the lamp base is equipped with detent lugs, they are engaged in complementary engagement openings of the optical element (the optical element then also positively engages the lamp base).
In a preferred embodiment, the electrical conductor according to the invention is formed from a transparent conductive coating. A coating is considered transparent in the sense of the present invention if its average transmittance in the visible spectral range is at least 70%, preferably at least 80%, and thus does not significantly limit the perspective through the vehicle glazing. This has the advantage that they are unobtrusive and do not significantly limit the perspective through the sunroof glass. Furthermore, coatings which are already present for the purpose of providing a sunroof glass with additional functions, such as sun protection coatings or coatings which reduce the emissivity (so-called low-E coatings), can be used for this purpose. However, it is also possible to use a coating which does not fulfil any other function, exclusively for the purpose of electrical contacting of the light source. The depth of the grooves depends on where (in which plane) the coating is disposed in the composite glass sheet. If the light source is to be directly connected to the coating, the recess extends from the inner space side surface of the inner glass plate up to the conductive coating, whereby one area of the coating is exposed in the recess and can be connected to the light source. A connection surface may be provided for connection to a light source, for example with additional printing containing silver.
The coating may be a large area coating in which electrical leads are created by insulated wires. This is especially suitable if the coating performs another function, such as an infrared reflecting function. Insulated wires are linear uncoated areas that electrically insulate the wire from the surrounding coating. For example, they may be formed in the coating by laser ablation. Conversely, if the coating is only used for electrical contact of the light source, the coating may also be present only in the wire region. The coating thus forms a wire as a whole, which can be achieved, for example, in a coating process by masking techniques.
Typically, two electrical conductors are assigned to each light source, wherein each conductor connects the light source to one of the two poles of the voltage source. These wires extend from the light source to a part of the peripheral region of the sun roof glass where they are connected, for example, to a flat conductor which is connected directly or indirectly to a voltage source via a further cable of the preceding stage.
In the first embodiment of the present invention, the wire is formed of a transparent conductive coating on the surface facing the intermediate layer, i.e., the inner space side of the outer glass plate. In this case, the coating is preferably a sun protection coating having at least one IR reflecting layer based on metal, in particular silver. A metallic layer, which is typically susceptible to corrosion, is protected in the interior of the composite glass sheet. In this case, the grooves extend through the entire intermediate layer, so that the connection areas of the coating are exposed in the grooves. The grooves act as through-penetrations through the entire inner glass sheet and the entire interlayer. The light source is preferably connected directly to the electrical leads, the optical element being fitted either directly into the through-going part of the inner glass plate or into the lamp socket in the through-going part, as described above. However, it is also possible to fit the lamp holder into a recess having a contact surface for the light source, as described above. In this case, the lamp base preferably extends to the conductive coating, so that the connection face in the surface of the lamp base facing the outer glass plate is in contact with the wires and the contact face in the surface of the lamp base facing the inner glass plate is in contact with the light source.
In a second embodiment of the invention, the wires are formed of a transparent conductive coating on one surface of the inner glass sheet. This may be a coating on the surface of the inner glass sheet facing the intermediate layer, i.e. the outer side. In this case, the coating is preferably a sun protection coating having at least one IR reflecting layer based on metal, in particular silver. A metallic layer, which is typically susceptible to corrosion, is protected in the interior of the composite glass sheet. However, it is also possible to provide a coating on the back-to-middle layer of the inner glass pane, i.e. on the inner space-side surface. In this case, the coating is preferably an emissivity-reducing coating having at least one IR-reflecting layer based on a transparent conductive oxide (TCO, transparent conductive oxide), in particular Indium Tin Oxide (ITO). Such a coating is not susceptible to corrosion and can therefore be used without any concern on the exposed inner space side surface of the inner glass pane. In this case, the groove is preferably formed by a through-portion which passes only through the inner glass pane, i.e. does not extend into the intermediate layer. As mentioned above, this embodiment is particularly advantageous if the through-hole through the inner glass pane has a lamp base which also contains a contact surface for the light source. The connection surface of the lamp base is then preferably in contact with the coating, and the current is fed to the contact surface via the connection lead integrated in the lamp base.
In a third embodiment of the invention, the wires are formed by a transparent conductive coating on a carrier film within the intermediate layer. In this case, the coating is preferably a sun protection coating having at least one IR reflecting layer based on metal, in particular silver. A metallic layer, which is typically susceptible to corrosion, is protected in the interior of the composite glass sheet. Alternatively, the coating is used only for the electrical connection of the light source and does not perform the sun protection function, and the size of the carrier film can be correspondingly reduced—it is only present in the wire area, whereas the majority of the sun roof glass is free of the carrier film. In this case, too, the coating preferably comprises at least one metal-based layer, in particular silver, which is advantageous because of the high electrical conductivity.
In the third embodiment, in an advantageous variant, the intermediate layer comprises at least a first thermoplastic layer and a second thermoplastic layer. The thermoplastic layers are arranged in a planar stack with each other, wherein the first thermoplastic layer is in direct contact with the inner glass pane. The second thermoplastic layer is disposed closer to the outer glass sheet. It may be in direct contact with the outer glass pane, but an additional thermoplastic layer may also be arranged between the second thermoplastic layer and the outer glass pane. The carrier film having a conductive coating is disposed between the first thermoplastic layer and the second thermoplastic layer, wherein the coated surface of the carrier film faces the first thermoplastic layer and the inner glass pane. The carrier film is arranged in the region of the vehicle sunroof glass that contains the groove, whereby the carrier film overlaps the groove and preferably extends to the side edges of the vehicle sunroof glass. In this case, the groove extends through the entire first thermoplastic layer, so that the connection region of the coating is exposed in the groove. The grooves are provided as through-holes through the entire inner glass sheet and the entire first thermoplastic layer adjacent to the inner glass sheet. The light source is preferably connected directly to the electrical leads, the optical element being fitted either directly into the through-going part of the inner glass plate or into the lamp socket in the through-going part, as described above. However, it is also possible to fit the lamp holder into a recess having a contact surface for the light source, as described above. In this case, the lamp base preferably extends to the conductive coating, so that the connection surface in the surface of the lamp base facing the outer glass plate and the carrier film is in contact with the wires and the contact surface in the surface of the lamp base facing the inner glass plate is in contact with the light source.
In principle, a further thermoplastic layer can also be present between the carrier film and the second thermoplastic layer. In this case, the grooves extend through all thermoplastic layers between the inner glass pane and the carrier film, so that the connection areas of the coating are exposed in the grooves.
Alternatively, however, the carrier film may also be in direct contact with the inner or outer glass pane and not be interposed between the two thermoplastic films of the intermediate layer. The coated surface of the carrier film is directed toward the inner glass pane. The grooves extend to the carrier film such that the connection areas of the coating are exposed in the grooves. If the carrier film is in contact with the inner glass pane, it therefore preferably extends only through the inner glass pane. If the carrier film is in contact with the outer glass sheet, it thus extends through the inner glass sheet and the entire interlayer. The light source is preferably connected directly to the electrical leads, the optical element being fitted either directly into the through-going part in the inner glass plate or into the lamp socket in the through-going part, as described above. However, it is also possible to fit the lamp holder into a recess having a contact surface for the light source, as described above. In this case, the lamp base preferably extends to the conductive coating, so that the connection surface in the surface of the lamp base facing the outer glass plate and the carrier film is in contact with the wires and the contact surface in the surface of the lamp base facing the inner glass plate is in contact with the light source.
The carrier film is preferably based on PET or formed from PET. The proportion of PET is preferably more than 90% by weight, particularly preferably more than 95% by weight. The carrier film preferably consists essentially of PET. The thickness of the support film is preferably from 20 μm to 200. Mu.m, particularly preferably from 25 μm to 150. Mu.m. However, it is also possible to use thicker carrier films, for example up to 800 μm, in particular when the thermoplastic layer present in the remaining glass pane has been locally removed in the region of the carrier film. The carrier film can then be formed correspondingly thick to compensate for the thickness of the missing thermoplastic layer. For this purpose, a plurality of carrier film types of films may also be placed one above the other.
Preferred transparent coatings that can form electrical conductors have been described above as sun protection coatings and emissivity reducing coatings. A sun protection coating is provided for reflecting infrared components of solar radiation to reduce heating of the vehicle interior space. The IR reflection effect is here particularly relevant in the near infrared range, for example in the range from 800nm to 1500 nm. In particular, the sun protection coating is a stack of thin layers, wherein the thickness of the individual layers is less than 1 μm. The thin layer stack comprises one or more IR reflecting layers based on metal, in particular silver, alternatively for example gold, aluminum or copper.
In addition to one or more IR reflecting layers, a dielectric layer is typically present. Typical dielectric layers of sun protection coatings are, for example:
an antireflection layer which reduces the reflection of visible light and thus increases the transparency of the coated glass sheet, for example based on silicon nitride, silicon-metal-mixed nitrides such as zirconium silicon nitride, titanium oxide, aluminum nitride or tin oxide, with a layer thickness of, for example, 10nm to 100 nm;
-a matching layer improving the crystallinity of the conductive layer, for example based on zinc oxide, having a layer thickness of for example 3nm to 20 nm;
a smoothing layer, which improves the surface structure of the layer lying thereon, for example amorphous oxides based on tin, silicon, titanium, zirconium, hafnium, zinc, gallium and/or indium, in particular tin-zinc mixed oxides, with a layer thickness of, for example, 3nm to 20 nm.
Coatings that reduce emissivity are also known as thermal radiation reflective coatings, low emissivity coatings, or low E coatings (low emissivity). Emissivity refers to a measure that gives how much heat radiation the glass plate emits into the interior space in the installed position compared to an ideal heat radiator (blackbody). The emissivity-reducing coating has the function of avoiding the radiation of heat into the interior space (the IR component of solar radiation, in particular the radiation of heat from the glass plate itself) and the radiation of heat out of the interior space. They have reflective properties against infrared radiation, in particular thermal radiation in the spectral range from 5 μm to 50 μm (see also standard DIN EN 12898:2019-06). Thereby improving thermal comfort in the inner space very effectively. In the case of high external temperatures and incident solar radiation, the emissivity-reducing coating can at least partially reflect the thermal radiation emitted by the entire glass pane in the direction of the interior space. In case the ambient temperature is low, they can reflect the heat radiation emitted from the inner space and thus reduce the effect of the cold glass plate as a heat sink. The emissivity-reducing coating is in particular a stack of thin layers, wherein the thickness of the individual layers is less than 1 μm. The thin layer stack comprises one (optionally several) IR reflecting layers, preferably based on conductive oxides (TCO), in particular Indium Tin Oxide (ITO), alternatively for example indium-zinc-mixed oxide (IZO), gallium-doped tin oxide (GZO), fluorine-doped tin oxide (SnO) 2 : f) Or antimony doped tin oxide (SnO) 2 ：Sb)。
In addition to the IR reflecting layer, a dielectric layer is typically present. Typical dielectric layers of emissivity-reducing coatings are, for example:
an anti-reflection layer having a lower refractive index than the TCO layer and arranged below and above it to increase the transmission through the glass plate and to reduce the reflectivity, for example based on silicon oxide, with a layer thickness of for example 10nm to 10 nm;
a barrier layer over the TCO layer for regulating oxygen diffusion (e.g. in the range of a bending process) during heat treatment of the sun roof glass, e.g. based on silicon nitride or silicon carbide, with a layer thickness of e.g. 5nm to 30 nm;
a barrier layer underneath the TCO layer, which is intended to prevent diffusion of alkali metal from the inner glass plate into the TCO layer, for example based on silicon nitride or aluminum nitride, with a layer thickness of for example 10nm to 50 nm.
If the transparent coating forming the conductor wire fulfills a further function, such as a sun protection function or a emissivity reducing function, it preferably covers the entire see-through area of the vehicle sunroof glass, except for the insulated wire used to form the conductor wire and optionally further local areas intended to ensure transmission of electromagnetic radiation through the sunroof glass as a communication, sensor or camera window. If the transparent coating does not perform such a function, the coating is preferably substantially limited to the wire area, while most of the see-through area is free of the coating.
However, the electrical leads do not necessarily have to be formed of a transparent coating. It is also possible to use metal wires (made of copper or tungsten, for example) inserted into the intermediate layer, or wires printed on the inner space side surface of the outer glass plate, on one surface of the inner glass plate or on the carrier film within the intermediate layer. Such printed conductors are common in the automotive field, for example as heating conductors on a rear window. They are typically applied by screen printing and then baked. They generally comprise a frit that ensures a stable connection with the surface of the glass plate and metal particles (in particular silver particles) that provide electrical conductivity. Such wires or printed wires, while not transparent, are more visually noticeable, but are sometimes acceptable due to their small width.
In an advantageous embodiment of the invention, the electrical conductors are dimensioned in such a way that they likewise form a series resistance for the light source. This is particularly advantageous if the light source is a light emitting diode-a series resistor is used to limit the current to avoid damage to the light emitting diode. A series resistor integral with the wire is connected in series with the light source and limits the voltage or current intensity to a non-critical value. The series resistance may be formed or set by appropriately sizing the electrical conductors. This is especially easy to achieve if the wires are formed from a transparent coating. The series resistance can then be formed or set by the design of insulated wires that insulate the electrical conductors from the surrounding coating.
In an advantageous embodiment of the invention, the vehicle sunroof glass comprises a capacitive button which is assigned to the light source and serves to switch the light source on and off. If the sun roof glass comprises a plurality of recesses with light sources, it is preferable to assign each light source an own button so that the light sources can be operated independently of each other. The buttons are preferably arranged around or near the assigned recesses, e.g. with a maximum spacing of 10cm.
The capacitive button is the area of the sunroof glass that triggers the switching process when the operator's finger touches or approaches. For this purpose, the region has at least one surface electrode. The capacitance of the surface electrode is measured by external control electronics. When the ground body is close to the surface electrode or for example contacts an insulator layer above the surface electrode, the capacitance of the surface electrode changes with respect to ground. The capacitance change is measured by the control electronics and triggers a switching signal when a threshold value is exceeded. The buttons are determined by the shape and size of the surface electrodes. In an alternative advantageous embodiment, the region has two surface electrodes that are capacitively coupled to each other. The electrodes may have, for example, a spiral, comb or loop shape. As the body/object approaches, the capacitance of the capacitor formed by the electrodes changes. The capacitance change is measured by the control electronics and triggers a switching signal when a threshold value is exceeded. The button is determined by the shape and size of the region where the electrodes are capacitively coupled.
The push button preferably has a length of 1cm 2 To 20cm 2 Is particularly preferably 2cm 2 To 10cm 2 . For example, the shape of the button may be oval, elliptical or circular, triangular, rectangular, square or other type of quadrilateral or higher order polygon.
In a particularly advantageous embodiment of the invention, the electrical leads for the one or more light sources and the capacitive button (more precisely, the one or more surface electrodes of the capacitive button) are formed by the same transparent conductive coating. At least one surface electrode of the button may also be insulated from the surrounding coating by an insulated wire. As mentioned above, the coating can be a coating on the inner space-side surface of the outer glass pane, a coating on the carrier film in the intermediate layer or a coating on the outer or inner space-side surface of the inner glass pane.
Alternatively, however, it is also possible that one or more surface electrodes of the button on the one hand and the electrical conductors for the one or more light sources on the other hand are formed by two different transparent coatings. Thus, for example, the electrical leads may be formed from a large area sun protection coating or an emissivity-reducing coating, while the coated carrier film is inserted into the surface electrode for one or more buttons in a corresponding area of the composite glass sheet, and vice versa. It is also possible that the surface electrodes of the buttons are formed by printed conductive paste, in particular screen-printed paste with glass frit and silver particles, which is baked into the surface of the outer or inner glass plate.
The outer and inner glass panes are preferably made of glass, particularly preferably soda lime glass, as is commonly used for glazing. However, the glass plate may also be made of other types of glass, such as quartz glass, borosilicate glass or aluminosilicate glass. The glass sheets may be colorless transparent or tinted or dyed independently of each other. The thickness of the outer and inner glass sheets can vary widely and can thus be adapted to the requirements of the individual case. The thickness of the outer glass plate and the inner glass plate is preferably 0.5mm to 5mm, particularly preferably 1mm to 3mm.
The vehicle sunroof glass is preferably curved in one or more spatial directions, as is common in the vehicle art, with typical radii of curvature ranging from about 10cm to about 40 m.
The interlayer preferably comprises polyvinyl butyral (PVB), ethylene Vinyl Acetate (EVA), or Polyurethane (PU). The intermediate layer comprises one or more thermoplastic layers. Each layer of the interlayer is preferably formed from a film, particularly preferably a film based on PVB, EVA or PU, in particular PVB. This means that the layer or film contains mainly the material (proportion more than 50% by weight) and may optionally contain further components, such as plasticizers, stabilizers, UV or IR absorbers, in addition to this. The thickness of each thermoplastic layer is preferably from 0.2mm to 2mm, particularly preferably from 0.3mm to 1mm. For example, films having a standard thickness of 0.38mm or 0.76mm may be used.
The invention also includes a method for manufacturing a vehicle sunroof glass, wherein
(i) Providing an outer glass pane, an inner glass pane and at least one thermoplastic layer,
(ii) A through-going part is made through the inner glass pane and optionally through the thermoplastic layer,
(iii) Arranging the outer glass pane, the at least one thermoplastic layer and the inner glass pane in the given order in a layer stack, wherein the through-portions of the inner glass pane, optionally together with the through-portions of the at least one thermoplastic layer, form a groove (a),
(iv) Laminating the stack of layers into a composite glass sheet, wherein a thermoplastic interlayer is made from the at least one thermoplastic layer,
(v) The light source is fitted into the recess with its beam direction facing away from the outer glass pane and is connected to electrical leads which are present on the surface of the outer or inner glass pane or in the intermediate layer,
(vi) The optical element is fitted into the recess in the beam path of the light source.
The embodiments described above in relation to vehicle sunroof glass apply in a corresponding manner to the manufacturing method.
In an advantageous embodiment, the penetration is introduced into the inner glass pane by laser drilling in method step (ii). Thus, the through-hole having an arbitrary shape can be realized with high accuracy. The laser-drilled through-holes can also be distinguished from mechanically drilled through-holes in the finished product, in particular by the fact that they are generally free of edge grinding and of good quality, the edge faces being free of conchioidal cracks or other damages, and by the characteristic tensile and compressive stresses in the glass.
In a particularly advantageous embodiment, the outer glass sheet and the inner glass sheet are bent by subjecting them to a bending process before being arranged in a layer stack. For bending, the glass sheets are softened by heating so that they become plastically deformable and then shaped by methods known per se, such as gravity bending, pressure bending and/or suction bending. Typical temperatures for glass bending processes are, for example, 500 ℃ to 700 ℃. The glass sheet may be bent into a cylindrical shape or a spherical shape. Preferably, the through-hole is produced in the already bent inner glass pane (the inner glass pane and the outer glass pane in method step (i) are thus provided as bent glass panes), in particular by laser drilling. Laser drilling may be better applied to bent vitreous glass sheets than mechanical drilling, which may lead to glass breakage due to stresses generated in the glass during the bending process.
The outer glass sheet and the inner glass sheet are preferably bent simultaneously, wherein the outer glass sheet and the inner glass sheet are congruently stacked. Their shapes are optimally matched with each other so that the composite glass sheet thus produced has high quality. At the same time congruent bending, the through-holes should not yet be present, since air can pass through the through-holes to between the glass panes and they do not remain in contact with each other. Thus, the drilling of the through-hole is preferably performed after bending, in particular by laser drilling.
In an advantageous embodiment, the laser drilling is performed with a laser emitting pulsed radiation in the green spectral range, in particular in the spectral range of 500nm to 550 nm. The pulse length is preferably in the nanosecond range. The concentrated laser radiation moves along the intended edge surface of the through-going part, for example in a spiral. If the entire edge surface is machined, the glass material defined by the laser (umschriebene) can be removed or can fall out of the now produced through-hole due to the action of gravity. Suitable lasers are, for example, nd: YAG laser or Yb: YAG laser.
If the through-hole through the inner glass pane should have a lamp base covering the edge face, this is preferably done after the through-hole has been drilled and before it is arranged in a layer stack. The lamp base can be produced, for example, by injection molding, wherein it is sprayed directly onto the inner glass pane or is mounted afterwards, for example glued.
In method step (iii), the through-portions of the inner glass pane and the through-portions of the at least one thermoplastic layer (if present) are arranged in superposition such that they together form a groove. If there are a plurality of thermoplastic layers, only one of which has a through-going portion, it is of course arranged in the layer stack in direct contact with the inner glass pane. If there are a plurality of thermoplastic layers, some of which have through-holes and others do not, the layers with through-holes are of course arranged in direct contact with each other and entirely directly adjoining the inner glass pane in the layer stack.
Electrical leads are provided prior to arranging the glass sheets and layers into a layer stack. If the conductor lines are to be formed from a transparent coating on one of the glass plates, the respective surface of the glass plate is pre-coated, for example by Physical Vapor Deposition (PVD), particularly preferably by cathode sputtering ("sputtering"), very particularly preferably by magnetic field assisted cathode sputtering ("magnetron sputtering"), or by other thin-layer methods, for example by Chemical Vapor Deposition (CVD), particularly plasma-assisted chemical vapor deposition (PECVD), by evaporation or by atomic layer deposition (atomic layer deposition, ALD). As long as the wire is not formed directly by masking techniques during coating, it is then preferably processed out of the coating by means of insulated wires produced in the coating by laser ablation.
If wires are to be provided on the carrier film, the carrier film is arranged between two thermoplastic layers in the layer stack.
Other types of wires may be produced, for example, by screen printing and baking on one surface of a glass plate with a printing paste containing glass frit and silver particles, or by inserting metal wires into an interlayer.
If the conductor is formed by a coating on the inner space-side surface of the outer glass pane, the method is particularly preferably carried out in the following order:
1. Coating the inner space side surface of the outer glass sheet
2. Laser ablating insulated wires in a coating to form electrical leads for a light source and planar electrodes and leads for a button
3. Bending an outer glass sheet and an inner glass sheet
4. Laser drilling through the through-holes of the inner glass sheet and creating through-holes through at least one thermoplastic layer or through all thermoplastic layers if multiple are used,
5. laminating a composite glass sheet consisting of an outer glass sheet, at least one thermoplastic layer and an inner glass sheet
6. Incorporating light sources and optical elements
If the wires are formed by a coating on the surface of the inner glass pane, the method is particularly preferably carried out in the following order:
1. coating the inner space side or outer side surface of the inner glass sheet
2. Laser ablating insulated wires in a coating to form electrical leads for a light source and planar electrodes and leads for a button
3. Bending an outer glass sheet and an inner glass sheet
4. Laser drilling through a through-hole of an inner glass plate
5. The lamp holder is mounted on the edge surface of the through part
6. Laminating a composite glass sheet consisting of an outer glass sheet, at least one thermoplastic layer and an inner glass sheet
7. Incorporating light sources and optical elements into lamp sockets
As mentioned above, the lamp base is preferably formed here with a contact surface for the light source, a connection surface for the conductor wire and an integrated connection conductor wire connecting the contact surface with the connection surface.
In both of the above-described particularly preferred embodiments, the electrical leads and the button are formed from the same coating. Alternatively, the wires may be formed only by a coating, while the buttons are made by an interposed carrier film between two thermoplastic layers, and vice versa.
If the conductor is formed from a coating on a carrier film, the method is particularly preferably carried out in the following order:
1. bending the outer and inner glass sheets to provide at least first and second thermoplastic layers
2. Laser drilling through the through-portions of the inner glass sheet and creating through-portions through the first thermoplastic layer,
3. the layer stack is produced in the following order: an outer glass pane, a second thermoplastic layer, at least one surface electrode with wires and buttons, a carrier film for the wires, a first thermoplastic layer, an inner glass pane,
4. laminating the composite glass sheet
5. Incorporating light sources and optical elements
The wires for the light source on the one hand and the surface electrodes and wires of the buttons on the other hand may be provided on the same carrier film or on two different carrier films.
The layer stack is laminated into a composite glass sheet in process step (iv). For this purpose, methods known per se, such as autoclave methods, vacuum bag methods, vacuum ring methods, calendering methods, vacuum laminators or combinations thereof, can be used. The glass panes are generally connected by an intermediate layer under the influence of heat, vacuum and/or pressure.
Typically, method steps (v) and (vi) are performed in the order given, i.e. the light source is first loaded and then the optical element is loaded. If the light source and the optical element are combined in one piece, for example by means of a lamp holder, they can be incorporated at the same time.
The light source is preferably connected to the wire in method step (v) by soldering, in particular ultrasonic soldering, or by means of a conductive adhesive. Before method step (v), a connecting material (solder or adhesive) is applied to the contact surface of the light source or to the contact surface of the wire.
The invention also includes the use of a vehicle sunroof glass according to the invention in a vehicle, preferably a motor vehicle, in particular a passenger vehicle. The light source is preferably used here as a reading light.
The invention is explained in more detail with reference to the figures and exemplary embodiments. The figures are schematic representations and are not drawn to scale. The drawings are not intended to limit the invention in any way. Wherein:
figure 1 shows a plan view of one embodiment of a vehicle sunroof glass according to the invention,
figure 2 shows a cross section along X-X' through the vehicle sunroof glass of figure 1,
fig. 3 shows a top view of a portion of the vehicle sunroof glass of fig. 1, with groove a but without light source 4 and optical element 5,
Figure 4 shows a cross-section along X-X' through another embodiment of a vehicle sunroof glass according to the invention,
fig. 5 shows a cross section along X-X' through another embodiment of a vehicle sunroof glass according to the invention.
Fig. 1, 2 and 3 show one detail each of an embodiment of a vehicle sunroof glass according to the invention. The vehicle sunroof glass is a composite glass sheet composed of an outer glass sheet 1 and an inner glass sheet 2, which are connected to each other by a thermoplastic interlayer 3. The outer glass pane 1 and the inner glass pane 2 are composed, for example, of soda lime glass and have a thickness of, for example, 2.1 mm. The interlayer is formed from a PVB-based film having a thickness of, for example, 0.76 mm. In the surrounding peripheral region, the vehicle sunroof glass has an opaque masking region, which is realized, for example, by a black coating 10 on the inner-space-side surface of the outer glass pane 1 facing the intermediate layer 3. In the installed position, the outer glass pane 1 is oriented towards the outside environment and the inner glass pane 2 is oriented towards the vehicle interior space.
The inner space-side surface of the outer glass pane 1 facing the intermediate layer 3 furthermore has a transparent conductive coating 8. The coating 8 is provided, for example, as a sun protection coating and comprises one or more thin silver layers and a dielectric layer.
The vehicle sunroof glass has four grooves a. Each groove a is a through portion passing through the inner glass plate 2 and the interlayer 3. The conductive coating 8 is thus exposed in the recess a.
The light source 4 is mounted in the recess a. The light source 4 is a Light Emitting Diode (LED) with its electrical contact surface in direct contact with the coating 8. The contact surfaces are connected to the electrical conductors 6.1, 6.2, for example by means of solder or conductive adhesive, the electrical conductors 6.1, 6.2 being formed by the coating 8 by means of insulating wires. The wires 6.1, 6.2 are used to connect the light source 4 to the positive and negative poles of a voltage source, in particular the on-board electrical system of the vehicle. The wires 6.1, 6.2 extend from the light source 4 to the peripheral region of the vehicle sunroof glass, where they are, for example, in contact with flat ribbon conductors, by means of which a connection to a voltage source is established. For connection to the contacts of the light source 4, the wires 6.1, 6.2 can have contact surfaces, not shown, in the recesses a, which are formed on the coating 8, for example by silver-containing screen printing.
The light source 4 is directed towards the interior space of the vehicle. In the beam path of the light source 4, an optical element 5 is arranged, which is likewise accommodated in the recess a. The optical element 5 is used for beam shaping of the light source 4 and is formed, for example, as a fresnel lens or a TIR lens made of transparent polycarbonate.
The optical element 5 is clamped directly in the through-going part passing through the inner glass plate 2. The through-hole is formed in a tapered shape, starting from the outer surface of the inner glass plate 2 facing the intermediate layer 3 to the inner space side surface facing away from the intermediate layer 3. The optical element has laterally arranged elastic stop lugs which are directly attached to the edge surfaces of the through-opening and which establish a force-locking connection therewith. The connection is also more stable by the tapering of the through-going part. The optical element 5 is thus stably fixed in the groove a.
There are a total of four grooves a with light sources 4 and optical elements 5. The light sources 4 are distributed on the sunroof glass in such a way that each light source 4 is assigned to one of the vehicle occupants (driver, co-driver, right rear seat, left rear seat) and is arranged above its seat. The light source 4 acts, for example, as a reading light for a vehicle occupant.
Because the electrical conductors 6.1, 6.2 and the optical element 5 are transparent, the integration of the reading lamp is optically inconspicuous. Furthermore, the optical element 5 and the light source 4 can be easily removed via the inner space side surface of the inner glass plate 2 facing away from the intermediate layer 3, for example for maintenance, repair or replacement purposes. For example, the braking lugs of the optical element can be pressed with a tool to remove the optical element 5.
Each light source 4 is assigned a capacitive button 9 arranged in its vicinity. By means of the push button 9, the operator can switch the light source 4 on and off independently of each other, so that each vehicle occupant can operate their reading light independently of the other. The button 9 is likewise formed by a coating 8. The first and second surface electrodes 9.1, 9.2 and the wires 9.3, 9.4 are realized in the coating 8 by insulating wires, which extend from the surface electrodes 9.1, 9.2 to the peripheral region of the sun roof glass, respectively, to be in electrical contact there with the flat conductors, for example, and to be connected to a control unit. The surface electrodes 9.1, 9.2 are capacitively coupled and register the proximity of the finger due to a change in capacitance caused by the proximity of the finger. This is registered by the control unit, whereby a switching process is triggered to switch on or off the light source 4.
Alternatively, the wires 6.1, 6.2 for the light source 4 and the push button 9 may also be formed by two different coatings. For example, the wires for the light source 4 may be formed by a coating 8 on the inner space side surface of the outer glass plate 1 and the surface electrodes 9.1, 9.2 and the wires 9.3, 9.4 may be provided on a carrier film between two thermoplastic layers of the intermediate layer 3.
Fig. 4 shows a cross section through another embodiment of a vehicle sunroof glass according to the invention. The outer glass pane 1 and the inner glass pane 2 are formed as in the embodiments of fig. 1-3. The intermediate layer 3 comprises two thermoplastic layers 3.1, 3.2, which are each formed, for example, from a PVB-based film having a thickness of, for example, 0.38mm and are arranged in a planar stack.
Between the thermoplastic layers 3.1, 3.2, a carrier film 3c is locally interposed, which has a transparent, electrically conductive coating 8, for example comprising silver, on the surface facing the inner glass pane 2. The carrier film 3c extends from the peripheral region of the sun roof glass to below the groove a. The recess a is formed here by a through-going part through the inner glass pane 2 and a through-going part through the first thermoplastic layer 3a in contact therewith. The coating 8 on the carrier film 3c is exposed in the recess a. Electrical leads 6.1, 6.2 for connecting the light source 4 are formed by the coating 8.
The carrier film 3c is formed, for example, in the shape of a strip, wherein the overall outer boundaries of the conductors 6.1, 6.2 in fig. 3 also form the outer boundaries of the carrier film 3 c. The two wires 6.1, 6.2 can then be separated from each other in the coating 8 by an insulated wire. Another carrier film may be inserted for the capacitive buttons 9, from which the surface electrodes 9.1, 9.2 are formed by coating. Alternatively, the wires 6.1, 6.2 and the button 9 can also be formed by the coating 8 of the common carrier film 3 c.
The light source 4 and the optical element 5 are again fitted into the recess. The light source 4 is connected to the wires 6.1, 6.2 of the carrier film 3 c. The optical element 5 is clamped directly into the through-opening of the inner glass pane 2 by means of lateral braking lugs, which for this purpose are conically formed.
Fig. 5 shows a cross section through another embodiment of a vehicle sunroof glass according to the invention. The outer glass pane 1 and the inner glass pane 2 are formed as in the embodiments of fig. 1-3. The interlayer 3 is in turn formed from one single PVB-based film with a thickness of 0.76 mm. However, the intermediate layer 3 has no through-hole here. The groove 4 is formed only by a penetration portion penetrating the inner glass plate 2. The lamp base 7 is fitted into the recess 4, and the lamp base 7 covers the edge surface of the through portion passing through the inner glass plate 2 and extends to the peripheral area of the inner space side surface of the inner glass plate 2 facing away from the intermediate space 3. The lamp base 7 is made of, for example, transparent polycarbonate.
The inner glass plate 2 has a transparent conductive coating 8 on the inner space side surface of the back-to-middle layer 3. The coating 8 is for example an emissivity-reducing coating comprising a thin layer based on ITO and a dielectric layer. The coating 8 is corrosion resistant so that it can be used on the exposed surface of the inner glass pane 2. Two electrical conductors 6.1, 6.2 are formed by the coating 8 via insulating wires, which serve to contact the light source 4 and each contact an electrical connection surface of the lamp base 7 in the portion extending to the inner space-side surface of the inner glass pane 2.
The lamp socket 7 has a pocket-like recess that opens toward the inner space side surface of the inner glass plate 2. The light source 4 is fitted into the recess and is in contact with a contact surface on the bottom surface of the lamp holder 7. The contact surfaces and the connection surfaces of the lamp base 7 are connected to each other by electrical conductors which extend, for example, as metal wires, in the interior of the lamp base 7, so that an electrical connection between the electrical conductors 6.1, 6.2 and the light source 4 is established via the lamp base 7. The optical element 5 is likewise inserted into a recess of the lamp base 7 and engages there. For example, the optical element 5 may in turn be formed with a detent lug which engages in a complementary opening in the lamp base 7, or the lamp base 7 may be provided with a detent lug which closes on the optical element 5.
The push button 8 may likewise be formed by a coating 8 by means of an insulated wire. Alternatively, for example, a multilayer structure of the intermediate layer 3 as in fig. 4 may be selected, wherein the surface electrodes 9.1, 9.2 are provided on the interposed carrier film 3 c.
List of reference numerals:
(1) Outer glass plate
(2) Inner glass plate
(3) Thermoplastic interlayers
(3a) First layer of intermediate layer 3
(3b) Second layer of the intermediate layer 3
(3c) Carrier film in intermediate layer 3
(4) Light source
(5) Optical element
(6.1, 6.2) electrical leads for connecting the light source 4
(7) Lamp holder
(8) Transparent conductive coating
(9) Push button
(9.1) first surface electrode of button 9
(9.2) second surface electrode of button 9
(9.3) leads of the first surface electrode 9.1
(9.4) leads of the second surface electrode 9.2
(10) Cover printing material
(A) Groove
X-X' section line

Claims (15)

1. A vehicle sunroof glazing comprising an outer glazing panel (1) and an inner glazing panel (2) connected to each other by a thermoplastic interlayer (3),
having at least one recess (A) which is formed at least by a through-hole through the inner pane (2) and from there extends optionally into the intermediate layer (3) or through the intermediate layer (3),
wherein the light source (4) and the optical element (5) are inserted into the recess (A) such that the light source (4) has a smaller distance from the outer glass pane (1) than the optical element (5) and the light source (4) is directed towards the optical element (5),
And wherein the vehicle sunroof glass is further provided with electrical leads (6.1, 6.2) connected to the light source (4).
2. Vehicle sunroof glass according to claim 1, wherein the through-going part through the inner glass pane (2) is delimited by a surrounding edge surface and the optical element (5)
Is clamped in the through-hole directly in a force-locking manner,
-being force-locked clamped in a lamp base (7) covered with an edge surface, or
Engaging in a form-locking manner with a base (7) covered with an edge surface,
wherein the optical element (5) or the lamp base (7) is provided with elastically deformable braking lugs.
3. The vehicle sunroof glass according to claim 1 or 2, wherein the optical element (5) is a lens, preferably a fresnel lens or a TIR lens.
4. A vehicle sunroof glass according to any one of claims 1 to 3, wherein the through-going portion through the inner glass pane (2) is delimited by a circumferential edge surface and is formed in a cone shape such that it tapers away from the surface of the inner glass pane (2) facing the intermediate layer (3), and wherein the optical element (5) is clamped directly in the through-going portion.
5. A vehicle sunroof glass according to any one of claims 1 to 3, wherein the through-going through the inner glass pane (2) is delimited by a circumferential edge surface and has a lamp base (7), the lamp base (7) covering the edge surface and into which the optical element (5) is fitted.
6. A vehicle sunroof glass according to any one of claims 1 to 5, wherein the groove (a) is formed by a through-going part passing through the inner glass pane (2) and the entire intermediate layer (3), and wherein the wires (6.1, 6.2) are formed by a transparent conductive coating (8) on the surface of the outer glass pane (1) facing the intermediate layer (3).
7. The vehicle sunroof glass according to any one of claims 1 to 5, wherein the interlayer (3) comprises at least two thermoplastic layers (3 a, 3 b),
and wherein the groove (A) is formed by a through-portion passing through the inner glass plate (2) and a thermoplastic layer (3 a) adjoining the inner glass plate (2),
and wherein a carrier film (3 c) is arranged between the thermoplastic layers (3 a, 3 b) in the region of the vehicle sunroof glass comprising the groove (A),
and wherein the wires (6.1, 6.2) are formed by a transparent conductive coating (8) on the carrier film (3 c).
8. The vehicle sunroof glass according to claim 5, wherein the wires (6.1, 6.2) are formed by a transparent coating (8) on the surface of the inner glass plate (2) facing the interlayer (3) or on the surface of the inner glass plate (3) facing away from the interlayer (3),
and wherein the light source (4) is likewise inserted into the lamp base (7) and connected to the wires (6.1, 6.2) by means of connecting conductors integrated into the lamp base (7).
9. The vehicle sunroof glass according to any one of claims 6 to 8, wherein the wires (6.1, 6.2) are dimensioned such that they likewise form a series resistance for the light source (4).
10. The vehicle sunroof glass according to any one of claims 1 to 9, wherein the optical element (5) is made of a transparent polymer, preferably Polycarbonate (PC), polymethyl methacrylate (PMMA) or polyethylene terephthalate (PET).
11. Vehicle sunroof glass according to any of claims 1 to 10, comprising capacitive buttons (9) for switching on and off the light sources (4), wherein each light source (4) is assigned an own button (9) if there are a plurality of light sources (4).
12. The vehicle sunroof glass according to claim 11, whenever retracted to any one of claims 6 to 9, wherein the button (9) is formed by the same coating (8) as the wires (6.1, 6.2).
13. Method for producing a vehicle sunroof glass, wherein
(i) Providing an outer glass pane (1), an inner glass pane (2) and at least one thermoplastic layer,
(ii) A through-hole is made through the inner glass pane (2) and optionally through the thermoplastic layer,
(iii) Arranging the outer glass pane (1), the at least one thermoplastic layer and the inner glass pane (2) in a layer stack in the given order, wherein the through-portions of the inner glass pane (2), optionally together with the through-portions of the at least one thermoplastic layer, form a groove (A),
(iv) Laminating the stack of layers into a composite glass sheet, wherein a thermoplastic interlayer (3) is made from the at least one thermoplastic layer,
(v) The light source (4) is inserted into the recess (A) with its beam direction facing away from the outer glass pane (1), and the light source (4) is connected to an electrical line (6), which electrical line (6) is present on the surface of the outer glass pane (1) or the inner glass pane (2) or in the intermediate layer (3),
(vi) In the beam path of the light source (4), an optical element (5) is fitted into the recess (A).
14. Method according to claim 13, wherein the outer glass plate (1) and the inner glass plate (2) are bent before arranging the layer stack, and wherein the through-holes are created in the bent inner glass plate (2) by laser drilling.
15. Use of a vehicle sunroof glass according to any one of claims 1 to 12 in a motor vehicle, wherein a light source (4) is used as reading light.
CN202380008518.7A 2022-03-14 2023-02-20 Vehicle sunroof glass with integrated light source Pending CN117136137A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP22161846 2022-03-14
EP22161846.5 2022-03-14
PCT/EP2023/054148 WO2023174636A1 (en) 2022-03-14 2023-02-20 Vehicle roof window with integrated light source

Publications (1)

Publication Number Publication Date
CN117136137A true CN117136137A (en) 2023-11-28

Family

ID=80738825

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202380008518.7A Pending CN117136137A (en) 2022-03-14 2023-02-20 Vehicle sunroof glass with integrated light source

Country Status (2)

Country Link
CN (1) CN117136137A (en)
WO (1) WO2023174636A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HUE052105T2 (en) 2015-08-18 2021-04-28 Saint Gobain Window pane with capacitive range and low-e coating
EP3264241A1 (en) 2016-06-29 2018-01-03 Saint-Gobain Glass France Lighting laminated glazing with a capacitive touch sensitive device and a light emitting diode and the manufacturing
EP3264242A1 (en) 2016-06-29 2018-01-03 Saint-Gobain Glass France Touch control glazing with a capacitive touch sensitive device and a light emitting diode and the manufacturing
RU2745553C1 (en) 2017-11-30 2021-03-26 Сэн-Гобэн Гласс Франс Double-glazed unit with integrated additional electric element
TR201911792A2 (en) 2019-08-02 2021-02-22 Mustafa Aydeskin Lighting and switching with Low-e glass

Also Published As

Publication number Publication date
WO2023174636A1 (en) 2023-09-21

Similar Documents

Publication Publication Date Title
CN106664089B (en) Glazing with low-e coating and capacitive switching region
US10139080B2 (en) Glazed roof comprising illuminating means and means for controlling light transmission
US10202075B2 (en) Sunroof comprising lighting means
KR101574456B1 (en) Transparent panel with electrically conductive coating
KR101979986B1 (en) Electrically heatable panel with switch region
KR101986031B1 (en) Composite pane with capacitive switching region
KR101975092B1 (en) Panel with illuminated switching surface and heating function
KR102179326B1 (en) Plate glass assembly with heatable composite pane with capacitive switching region
JP6967017B2 (en) Manufacture of luminous laminated glazing roofs for vehicles, vehicles incorporating them and said glazing roofs
US10639869B2 (en) Vehicular luminous laminated glazed roof, vehicle incorporating same and manufacture
JP6850307B2 (en) Manufacture of luminous laminated glazing roofs for vehicles, vehicles incorporating them, and the glazing roofs
KR20140099548A (en) Transparent pane with electrically conductive coating
CN107848378B (en) Pane with capacitive switching zone for contactless functional control
CN113905887A (en) Vehicle glazing with electroluminescent device and optical band stop filter
CN117136137A (en) Vehicle sunroof glass with integrated light source
CN115245045A (en) Glass with sensor switch surface
CN114982375A (en) Glazing with electrically heatable communication window for sensor and camera system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication