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WO2024068173A1 - Vitrage de véhicule et agencement pour un système d'aide à la conduite - Google Patents

Vitrage de véhicule et agencement pour un système d'aide à la conduite Download PDF

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Publication number
WO2024068173A1
WO2024068173A1 PCT/EP2023/073795 EP2023073795W WO2024068173A1 WO 2024068173 A1 WO2024068173 A1 WO 2024068173A1 EP 2023073795 W EP2023073795 W EP 2023073795W WO 2024068173 A1 WO2024068173 A1 WO 2024068173A1
Authority
WO
WIPO (PCT)
Prior art keywords
mirror structure
vehicle glazing
vehicle
radiation
functional layer
Prior art date
Application number
PCT/EP2023/073795
Other languages
German (de)
English (en)
Inventor
Markus KEWITZ
Julian GREVERATH
Sebastian ARENDT
Michele CAPPUCCILLI
Original Assignee
Saint-Gobain Glass France
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 filed Critical Saint-Gobain Glass France
Publication of WO2024068173A1 publication Critical patent/WO2024068173A1/fr

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/84—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A61B5/0077—Devices for viewing the surface of the body, e.g. camera, magnifying lens
    • A61B5/0079—Devices for viewing the surface of the body, e.g. camera, magnifying lens using mirrors, i.e. for self-examination
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Measuring devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/1032—Determining colour of tissue for diagnostic purposes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6887—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient mounted on external non-worn devices, e.g. non-medical devices
    • A61B5/6893—Cars
    • 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
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    • 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
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    • 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
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    • B32B17/10174—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
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    • 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
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    • 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
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    • 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
    • B32B17/10788—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
    • 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
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    • 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
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    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2503/00—Evaluating a particular growth phase or type of persons or animals
    • A61B2503/20—Workers
    • A61B2503/22—Motor vehicles operators, e.g. drivers, pilots, captains
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/02—Details of sensors specially adapted for in-vivo measurements
    • A61B2562/0233—Special features of optical sensors or probes classified in A61B5/00
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    • A61B5/16—Devices for psychotechnics; Testing reaction times ; Devices for evaluating the psychological state
    • A61B5/18—Devices for psychotechnics; Testing reaction times ; Devices for evaluating the psychological state for vehicle drivers or machine operators
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    • B32B2307/40—Properties of the layers or laminate having particular optical properties
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
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    • G08B21/06—Alarms for ensuring the safety of persons indicating a condition of sleep, e.g. anti-dozing alarms
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/002—Heaters using a particular layout for the resistive material or resistive elements
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/013—Heaters using resistive films or coatings

Definitions

  • the invention relates to a vehicle glazing and an arrangement for a driver assistance system with the vehicle glazing, a radiation source for emitting infrared radiation and a radiation receiver for receiving infrared radiation.
  • Vehicle windows in particular windshields, increasingly have full-surface electrically conductive coatings that are transparent to visible light, which cause the window to be heated in a targeted manner when an electrical voltage is applied.
  • Composite panes are known which have a transparent, electrically conductive coating on an inside surface of one of the individual panes. An external voltage source allows an electrical heating current to flow through the coating.
  • WO2012/052315 A1 discloses such a metal-based coating.
  • the electrical contact of the heating layer is made via current collectors.
  • the current collectors consist, for example, of a printed and baked silver paste.
  • the current collectors typically run along the upper and lower edges of the pane. With such an arrangement, the heating current flows essentially evenly through the entire coating, which is thus heated evenly over the entire surface.
  • Driver assistance systems are often used in motor vehicles, particularly in passenger cars.
  • Driver assistance systems support the driver in driving the vehicle, for example by automatically applying the brakes when there is a risk of a collision or by automatically keeping in lane.
  • Such driver assistance systems can include monitoring the driver in order to detect early fatigue on the part of the driver.
  • Systems are known in which the driver's face is scanned using infrared radiation. The direction and duration of the driver's gaze are recorded in order to determine whether the driver is tired.
  • Driver assistance systems usually include a radiation source for emitting infrared radiation and a radiation receiver for receiving infrared radiation, which are typically independent components but are usually arranged in the same assembly.
  • the radiation source is arranged in such a way that the infrared radiation is directed directly at the driver's face and in particular the area around the eyes.
  • the infrared radiation is reflected from the driver's face and then directly detected by the radiation receiver.
  • the radiation source and radiation receiver must be so arranged so that the driver's face is clearly visible. Such arrangements must function properly even at low temperatures and in damp weather.
  • WO 2022/157022 A1 discloses a pane with a heatable sensor field, which includes a heatable film attached to the sensor field.
  • the film consists of a coated carrier film, with the coating being electrically conductive.
  • the film is firmly bonded to the pane via an adhesive layer.
  • WO 2022/179817 A1 describes a projection arrangement with a composite pane and P-polarized radiation.
  • the composite pane has a reflection layer which is arranged between the outer pane and the inner pane of the composite pane and is suitable for reflecting P-polarized light.
  • DE 102016213066 B4 discloses a device for driver observation inside a motor vehicle with a camera that is configured to record light with a wavelength in the near infrared range and that records a mirror image of the driver.
  • the object of the present invention is to provide an improved vehicle glazing for a driver assistance system of a vehicle, which counteracts fogging and icing.
  • the vehicle glazing comprises an outer pane and a
  • the vehicle glazing comprises a thermoplastic intermediate layer, and a masking strip, which is arranged in regions on a surface of the outer pane. Furthermore, the vehicle glazing comprises a thermoplastic intermediate layer, and a masking strip, which is arranged in regions on a surface of the outer pane. Furthermore, the vehicle glazing comprises a thermoplastic intermediate layer, and a masking strip, which is arranged in regions on a surface of the outer pane. Furthermore, the vehicle glazing comprises a
  • the vehicle glazing further comprises at least one infrared radiation-reflecting functional layer with at least two current collectors, wherein the functional layer is designed to be electrically conductive and the current collectors are arranged on the functional layer in such a way that the functional layer is provided as a heating device for heating the mirror structure.
  • the vehicle glazing is intended as a composite pane for a driver assistance system that detects a facial condition, such as premature fatigue, of a vehicle user. With the invention, the driver assistance system can work without disruption in poor weather or visibility conditions, since fogging and icing on the inner pane or mirror structure can be removed quickly and easily.
  • the invention thus shows an innovation that offers significant advantages over the conventional approach that are basically not achievable in the prior art.
  • the mirror structure can reflect radiation to the radiation receiver and this radiation is detected by the radiation receiver.
  • Information about the facial condition of a vehicle user (driver) can be obtained from the recorded data.
  • the functional layer in the edge region of the vehicle glazing is electrically connected to the current bus conductors in such a way that when an electrical voltage is applied to the current bus conductors, a heating current flows through the functional layer.
  • HVAC air conditioning system
  • the mirror structure or a surface of the orthogonal projection of the mirror structure can be arranged centrally between two parallel current bus conductors. With such an arrangement, the mirror structure can be heated efficiently. This enables very good recognition of details of the driver's face and, in particular, eye movements.
  • the vehicle glazing preferably has three current collectors, with a middle current collector arranged between two current collectors being connected to a reference potential, for example ground.
  • a reference potential for example ground.
  • the functional layer has a first current collector, a second (middle) current collector and a third current collector.
  • a first heating zone is formed between the first and second current collectors and a second heating zone is formed between the second current collector and the third current collector.
  • the mirror structure is located within the first heating zone and forms a first reflection area of the vehicle glazing.
  • a second reflection area can be located within the second heating zone.
  • the reflection areas of the vehicle glazing can be selectively heated by the separate heating zones without the entire vehicle glazing being heated. In this way, energy consumption can be significantly reduced.
  • the “complete overlap of an element A with an element B” means that the orthonormal projection of element A to the plane of element B is located completely within element B.
  • the at least two current collectors extend along a side edge of the mirror structure and the length of at least one current collector corresponds to a side edge length of the mirror structure.
  • the current collectors can have different lengths.
  • the at least two current collecting conductors running essentially parallel to one another can extend vertically in the installation position of the vehicle glazing on two opposite edges of the mirror structure.
  • the vehicle glazing has a peripheral side edge, which preferably comprises an upper edge and a lower edge as well as two edges running between them with a first and a second lateral edge.
  • the upper edge refers to the edge which is intended to point upwards in the installed position.
  • the lower edge refers to the edge which is intended to point downwards in the installed position.
  • the upper edge is often also referred to as the roof edge and the lower edge as the engine edge.
  • the vehicle glazing can have any suitable geometric shape and/or curvature.
  • the current collectors can run vertically to the lower edge of the vehicle glazing, which is arranged downwards in the direction of the engine when the vehicle glazing is installed.
  • the connecting cables the current collector conductor is led out of the vehicle glazing directly at the motor edge of the vehicle glazing, in particular the windscreen. This avoids a costly solution in which the connection cables have to be led out on one side of the vehicle glazing.
  • the length of at least one current collector can be 100 mm to 500 mm, preferably 250 mm to 400 mm, particularly preferably 350 mm. Since the current collector does not extend over the entire width of the vehicle glazing, the entire surface of the vehicle glazing does not have to be heated, but rather a local, limited heating zone is heated in a targeted manner, so that heating energy can be saved.
  • the first, second and/or third current bus conductor is applied to the surface of the first inner pane and/or the electrically conductive functional layer by means of soldering or gluing.
  • the current bus conductors applied in this way are preferably designed as a wire or strip of an electrically conductive film.
  • the current bus conductors then contain, for example, at least aluminum, copper, tinned copper, gold, silver, zinc, tungsten and/or tin or alloys thereof.
  • the strip preferably has a thickness of 10 pm to 500 pm, particularly preferably 30 pm to 300 pm. Current collector conductors made of electrically conductive films with these thicknesses are technically easy to implement and have an advantageous current-carrying capacity.
  • the strip can be electrically conductively connected to the electrically conductive structure, for example via a solder mass, via an electrically conductive adhesive or by direct placement.
  • the first, second and/or third current collector is designed as a printed and burned-in conductive structure.
  • the printed current collector preferably contains at least one metal, a metal alloy, a metal compound and/or carbon, particularly preferably a noble metal and in particular silver.
  • the printing paste preferably contains metallic particles, metal particles and/or carbon and in particular noble metal particles such as silver particles.
  • the electrical conductivity is preferably achieved by the electrically conductive particles.
  • the particles can be in an organic and/or inorganic matrix such as pastes or inks, preferably as a printing paste with glass frits.
  • the layer thickness of the printed current collecting conductors is preferably from 5 pm to 40 pm, particularly preferably from 8 pm to 20 pm and most particularly preferably from 8 pm to 12 pm.
  • Printed current collecting conductors with these thicknesses are technically easy to implement and have an advantageous current carrying capacity.
  • the first current bus conductor, the second bus conductor and/or the third bus conductor are each electrically contacted by one or more connecting lines.
  • the connecting cable is preferably designed as a flexible film conductor (flat conductor, ribbon conductor). This refers to an electrical conductor whose width is significantly larger than its thickness.
  • a foil conductor is, for example, a strip or tape containing or consisting of copper, tinned copper, aluminum, silver, gold or alloys thereof.
  • the functional layer is arranged on a first surface (side III) of the inner pane, with the mirror structure being arranged on a second surface (side IV) of the inner pane.
  • the inner pane has a first surface (side III) facing the thermoplastic intermediate layer and a second surface (side IV) facing away from the thermoplastic intermediate layer.
  • the interior-side surface (side IV) of the inner pane in the installed position is also the inner surface of the vehicle glazing.
  • the outer pane has a first surface (side I) facing away from the thermoplastic intermediate layer, which is also the outer surface of the vehicle glazing.
  • the outer pane also has a second interior-side surface (side
  • the vehicle glazing is intended to separate an external environment from an interior, preferably a vehicle interior.
  • the outside surface (I) of the outer pane is intended to face the external environment and the inside surface (IV) of the inner pane is intended to face the interior.
  • the functional layer can be between the inner pane and the outer pane and the mirror structure on the first surface (side
  • the mirror structure can lie directly on the functional layer and thus be heated in a more targeted manner.
  • the mirror structure covers the at least two bus bars.
  • the first bus bar and the second bus bar are not visible from the interior of a vehicle.
  • the mirror structure preferably comprises a metal selected from a group consisting of aluminum, magnesium, tin, indium titanium, tantalum, niobium, nickel, copper, chromium, cobalt, iron, manganese, zirconium, cerium, scandium yttrium, silver, gold, platinum and palladium, ruthenium, boron-doped silicon, silicon-zirconium mixed nitride, silicon nitride, titanium oxide, silicon oxide, titanium carbide, zirconium carbide, silicon-zirconium-aluminum or mixtures thereof.
  • a metal selected from a group consisting of aluminum, magnesium, tin, indium titanium, tantalum, niobium, nickel, copper, chromium, cobalt, iron, manganese, zirconium, cerium, scandium yttrium, silver, gold, platinum and palladium, ruthenium, boron-doped silicon, silicon-zirconium mixed n
  • the mirror structure is suitable for reflecting visible light in a wavelength range of at least 380 nm to 780 nm.
  • the mirror structure preferably reflects at least 80%, particularly preferably at least 90% and in particular at least 99% of the incident light rays.
  • the mirror structure is a reflective film. This improves the vehicle glazing manufacturing process.
  • the mirror structure is preferably arranged in front of the masking strip in the direction of viewing through the vehicle glazing.
  • the masking strip covers the mirror structure in the direction of viewing through the vehicle glazing in the direction from the outer pane to the inner pane.
  • the mirror structure can be arranged in strip form along a lower edge of the vehicle glazing.
  • the mirror structure preferably has a width of 100 mm or more, particularly preferably 150 mm or more, in particular 170 mm or 300 mm (millimeters) or more. In the sense of the invention, "width" means the extent perpendicular to the direction of extension.
  • the masking strip includes a masking layer, which may be an enamel or an opaque thermoplastic film.
  • the masking layer can also be a partially opaque thermoplastic film and thus part of the thermoplastic intermediate layer or an inserted, opaque element.
  • the masking layer is in particular an opaque (dark), preferably black, coating.
  • the masking strip is preferably applied to the interior, second surface (II) of the outer pane, but it can also be applied to the first surface (III) of the inner pane or the second surface (IV) of the inner pane.
  • the masking strip is preferably a peripheral (frame-shaped) layer which extends along the peripheral edge of the vehicle glazing and in the area of Mirror structure can be widened.
  • the masking strip also serves as UV protection for the assembly adhesive of the composite window (for example for gluing into a vehicle).
  • the masking strip preferably has a transmittance (according to ISO 9050:2003) for visible light of less than 15%, preferably less than 10%, particularly preferably less than 1%.
  • the masking strip can also be semi-transparent, at least in sections, for example as a dot grid, stripe grid or checkered grid. Alternatively, the masking strip can also have a gradient, for example from an opaque covering to a semi-transparent covering.
  • the functional layer reflecting infrared radiation is arranged between the outer pane and the inner pane.
  • the functional layer is arranged between the masking strip and the mirror structure when viewed through the vehicle glazing.
  • the functional layer is transparent to visible light.
  • the functional layer reflecting infrared radiation is electrically conductive.
  • the functional layer is provided as a heating device for heating the vehicle glazing.
  • the functional layer is a single layer or a layer structure made up of several individual layers with a total thickness of less than or equal to 2 pm, particularly preferably less than or equal to 1 pm.
  • transparent means that the total transmission of the vehicle glazing, in particular as a windshield, complies with the legal requirements and preferably has a transmittance of more than 70% and in particular more than 75% for visible light.
  • opaque means a light transmission of less than 15%, preferably less than 5%, in particular 0%.
  • the values for the light transmission (TL) and the reflection (RL) refer (as is usual for automotive glazing) to light type A, i.e. the visible portion of sunlight at a wavelength of 380 nm to 780 nm, i.e. essentially the visible spectrum of solar radiation. Infrared rays are understood to be rays with a wavelength of greater than about 800 nm.
  • the functional layer contains at least one metal, preferably silver, nickel, chromium, niobium, tin, titanium, copper, palladium, zinc, gold, cadmium, aluminum, silicon, tungsten or alloys thereof, and/or at least one metal oxide layer, preferably tin-doped Indium oxide (ITO), aluminum-doped zinc oxide (AZO), fluorine-doped tin oxide (FTO, SnO2:F) or antimony-doped tin oxide (ATO, SnO2:Sb).
  • the functional layer can comprise a sequence of several individual layers, in particular at least one metallic layer and dielectric layers which, for example, contain at least one metal oxide.
  • the metal oxide preferably contains zinc oxide, tin oxide, indium oxide, titanium oxide, silicon oxide, aluminum oxide or the like, as well as combinations of one or more thereof.
  • the dielectric material contains, for example, silicon nitride, silicon carbide or aluminum nitride.
  • Silver has become the preferred metal for the metallic layer because it has a relatively neutral color effect and also selectively reflects infrared radiation outside the visible range of solar radiation.
  • the dielectric layers have the task of improving the optical properties of the coated pane via their refractive indices and protecting the metallic functional layer from oxidation.
  • Such functional layers also have a sun protection effect and are produced using the reactive sputtering process, for example.
  • layer systems with two silver functional layers, but also three or four silver functional layers are used because their efficiency, i.e. the reflection of infrared radiation outside the visible range in relation to the transmission of visible radiation, is greater.
  • the silver functional layers are separated from each other by dielectric layers.
  • Functional layers with sun protection effects are known, for example, from DE102009006062 A1, W02007/101964 A1, WO2013/104439A1, DE19927683 C1 and EP1218307 B1.
  • the thickness of the functional layer can vary widely and be adapted to the requirements of the individual case, with a layer thickness of 10 nm to 5 pm and in particular 30 nm to 1 pm being preferred.
  • the surface resistance of the functional layer with sun protection effect is preferably from 0.35 ohm/square to 200 ohm/square, preferably 0.5 ohm/square to 200 ohm/square, most preferably from 0.69 ohm/square to 30 ohm/square, and in particular from 2 ohms/square to 20 ohms/square.
  • the functional layer partially covers or covers the surface of the inner pane, but preferably over a large area.
  • the term “large area” means that at least 50%, at least 60%, at least 70%, at least 75% or preferably at least 90% of the surface of the pane is covered (e.g. coated) by the functional layer.
  • the functional layer or a carrier film with the functional layer can be arranged on a surface of the inner pane or outer pane.
  • the functional layer is located on an internal surface of one or the other pane (ie side II or side III).
  • the functional layer is arranged on the first surface of the inner pane (page III).
  • the functional layer can be embedded between two thermoplastic intermediate layers.
  • the functional layer is then preferably applied to a carrier film or carrier disk.
  • the carrier film or The carrier disc preferably contains a polymer, in particular polyvinyl butyral (PVB), ethylene vinyl acetate (EVA), polyurethane (PU), polyethylene terephthalate (PET) or combinations thereof.
  • the invention also relates to an arrangement for a driver assistance system of a vehicle, which comprises a radiation source for emitting infrared radiation, a radiation receiver for receiving infrared radiation and the vehicle glazing according to the invention.
  • the vehicle glazing has an outer pane and an inner pane, which are connected to one another via a thermoplastic intermediate layer.
  • the vehicle glazing also comprises at least one masking strip and a mirror structure for reflecting infrared and visible radiation.
  • the radiation source is arranged such that infrared radiation can be reflected from the mirror structure as first reflection radiation onto the face of a vehicle user and the first reflection radiation can be reflected from the face of the vehicle user onto the mirror structure as second reflection radiation.
  • the radiation receiver is arranged such that the second reflection radiation reflected by the mirror structure as third reflection radiation is reflected to the radiation receiver and can be received by the radiation receiver.
  • the radiation receiver also comprises a light sensor that detects light reflected by the mirror structure. According to the invention, the monitoring of a facial state is expanded by means of a light sensor that detects a light beam reflected by the mirror structure.
  • the image data provides additional information about the face of the vehicle user.
  • the radiation receiver in particular the light sensor, is intended for detecting radiation with a wavelength of 380 nm to 780 nm (nanometers), i.e. essentially for detecting radiation in the visible spectrum of radiation but also infrared radiation. Infrared rays are understood to be rays with a wavelength greater than approximately 800 nm.
  • the light sensor records the color state of the face, thereby providing the monitoring system with additional information about the condition of the person being monitored.
  • the additional provision of image data has the particular advantage that more details of the face can be recorded and thus an improved recording of the condition of a vehicle user can take place.
  • the image data can be made available to a control unit, for example, in the form of a video signal or in the form of a graphic file.
  • the video data can also be used for video telephony.
  • the mirror structure is intended to reflect infrared radiation and light.
  • a beam of light from the face of the vehicle user, in particular a driver of the vehicle, is reflected on the mirror structure.
  • the radiation receiver is arranged such that the light beam reflected by the mirror structure as a light reflection is reflected to the radiation receiver and can be received by the light sensor.
  • the light sensor is arranged in the beam path of the light rays reflected by the mirror structure.
  • the radiation receiver is intended to detect a facial condition of the vehicle user. This image data is fed into the bus system, for example the CAN bus system, in addition to other information.
  • the radiation receiver can be arranged on the dashboard (also called a console, control panel or switch panel) of the vehicle, in particular in the vicinity of the steering wheel.
  • the radiation receiver can be arranged on an A-pillar, center console, steering wheel or rear-view mirror of the vehicle.
  • the radiation receiver can be arranged centrally on the dashboard of the vehicle. This arrangement of the radiation receiver allows several faces to be detected for monitoring purposes.
  • the radiation receiver can expediently be provided for detecting a facial state of the driver and a facial state of the passenger.
  • the radiation receiver comprises a light sensor designed as a camera.
  • the light sensor can preferably be designed as a photodiode or as a camera.
  • the radiation receiver and the at least one radiation source can be designed as a module, i.e. a structural unit, in which the light sensor is arranged centrally and the at least one radiation source is arranged to the side of the radiation receiver.
  • the outer pane and inner pane preferably contain or consist of glass, particularly preferably flat glass, float glass, quartz glass, borosilicate glass, soda-lime glass, alumino-silicate glass, or clear plastics, preferably rigid clear plastics, in particular polyethylene, polypropylene, polycarbonate, polymethyl methacrylate, polystyrene, polyamide, polyester, polyvinyl chloride and/or mixtures thereof.
  • the outer pane and inner pane can have other suitable coatings known per se, for example anti-reflective coatings, non-stick coatings, anti-scratch coatings, photocatalytic coatings or sun protection coatings or low-E coatings.
  • the thickness of the individual panes can vary widely and can be adapted to the requirements of the individual case.
  • discs with standard thicknesses of 0.5 mm to 5 mm and preferably 1.0 mm to 2.5 mm are used.
  • the size of the discs can vary widely and depends on the use.
  • the thermoplastic intermediate layer contains or consists of at least one thermoplastic, preferably polyvinyl butyral (PVB), ethylene vinyl acetate (EVA) and/or polyurethane (PU) or copolymers or derivatives thereof, optionally in combination with polyethylene terephthalate (PET).
  • the thermoplastic intermediate layer can also, for example, polypropylene (PP), polyacrylate, polyethylene (PE), polycarbonate (PC), polymethyl methacrylate, polyvinyl chloride, polyacetate resin, casting resin, acrylate, fluorinated ethylene-propylene, polyvinyl fluoride and / or ethylene-tetrafluoroethylene, or a copolymer or mixture thereof.
  • the thermoplastic intermediate layer is preferably designed as at least one thermoplastic composite film and contains or consists of polyvinyl butyral (PVB), particularly preferably polyvinyl butyral (PVB) and additives known to those skilled in the art, such as plasticizers.
  • the thermoplastic intermediate layer preferably contains at least one plasticizer.
  • the thermoplastic intermediate layer can be formed by a single film or by more than one film.
  • the thermoplastic intermediate layer can be formed by one or more thermoplastic films arranged one above the other, the thickness of the thermoplastic intermediate layer preferably being from 0.25 mm to 1 mm, typically 0.38 mm or 0.76 mm.
  • the invention further extends to a system for monitoring a driver of a vehicle, which comprises an arrangement according to the invention, at least one actuator and / or at least one signal output device and an electronic control device, which is intended to provide information about the driver based on an output signal of the radiation receiver to determine. Based on the information determined, an electrical signal is sent to the at least one actuator for carrying out a mechanical action and/or to the at least one signal output device for outputting an optical and/or acoustic signal.
  • the invention relates to a motor vehicle with a driver assistance system according to the invention. Furthermore, the invention extends to a method for monitoring a vehicle user, in particular a driver of a vehicle, which comprises the following steps:
  • the invention extends to the use of the arrangement according to the invention in a driver assistance system with monitoring of a vehicle user of a vehicle for traffic on land, on water or in the air.
  • Figure 1 is a plan view of a vehicle glazing according to the invention
  • Figure 2 is a cross-sectional view of a first embodiment of the vehicle glazing according to the invention
  • Figure 3 is a cross-sectional view of a second embodiment of the vehicle glazing according to the invention.
  • FIG. 4 shows a cross-sectional view of a third embodiment of the vehicle glazing according to the invention
  • Figure 5 shows a first embodiment of an arrangement of the current bus conductors
  • Figure 6 shows a second embodiment of the arrangement of the current collecting conductors
  • Figure 7 shows a third embodiment of the arrangement of the current collecting conductors
  • Figure 8 shows a schematic view of an arrangement according to the invention for a driver assistance system of a vehicle.
  • Figure 1 shows a schematic plan view of the vehicle glazing 5 according to the invention.
  • the vehicle glazing 5 according to the invention can be, for example, a windshield of a vehicle.
  • the vehicle glazing 5 separates a vehicle interior from an external environment.
  • the vehicle glazing 5 has a frame-shaped masking strip 5.4 running around the entire length.
  • the vehicle glazing 5 also includes a mirror structure 5.5, which is located in front of the masking strip 5.4.
  • the opaque masking strip 5.4 acts as an opaque background for the mirror structure.
  • the mirror structure 5.5 is, for example, a mirror film, with the masking strip 5.4 completely covering the mirror film in the viewing direction. If the vehicle glazing 5 is irradiated with images in the area of the mirror structure 5.5, these images are reflected. In front of the opaque masking strip 5.4, the images reflected by the mirror structure 5.5 appear bright and easily recognizable.
  • the mirror structure 5.5 is arranged in an edge region 9 near a lower edge U of the vehicle glazing 5.
  • the upper edge O refers to the edge that is intended to point upwards in the installation position.
  • the lower edge U refers to the edge that is intended to point downwards in the installation position.
  • the distance between the mirror structure 5.5 and an edge of the outer pane 5.1 can be 60 mm, 80 mm or 100 mm.
  • the mirror structure 5.5 can be arranged in the upper section of the edge region 9 or on a lateral section of the edge region 9.
  • An edge-side arrangement is advantageous and expedient when the vehicle glazing 5 is used and designed as a windshield in order to meet the required requirements for the driver's field of vision.
  • the mirror structure 5.5 can be designed to be flat and continuous, in particular in one piece.
  • the mirror structure 5.5 can extend along a, in particular lower edge of the vehicle glazing 5, so that a circumferential (from one side edge to an opposite side edge) image can be generated.
  • the mirror structure 5.5 extends in several, for example three or four, sections, which are arranged in the lower (motor-side) edge region 9.
  • FIG. 2 shows a cross-sectional view of a first embodiment of the vehicle glazing 5 in the area of the mirror structure 5.5.
  • the cross-sectional view of Figure 2 corresponds to the section line AA' ( Figure 1) in area Z of the mirror structure 5.5.
  • the vehicle glazing 5 is designed as a composite pane, which has an outer pane 5.1 and an inner pane 5.2, which are firmly connected to one another by a thermoplastic intermediate layer 5.3.
  • the outer pane 5.1 and the inner pane 5.2 each consist of glass, preferably thermally toughened soda-lime glass, and are transparent to visible light.
  • the outer pane 5.1 has, for example, a thickness of 2.1 mm and the inner pane 5.2, for example, a thickness of 1.6 mm or 1.5 mm.
  • the thermoplastic intermediate layer 5.3 consists of a thermoplastic, preferably polyvinyl butyral (PVB), ethylene vinyl acetate (EVA) and/or polyethylene terephthalate (PET).
  • the outer pane 5.1 has a first surface I and an interior-side, second surface II facing the first thermoplastic intermediate layer 5.3.
  • the inner pane 5.2 has a first surface III facing the thermoplastic intermediate layer 5.3 and a second surface IV facing away from the thermoplastic intermediate layer 5.3.
  • the vehicle glazing 5 has the frame-shaped masking strip 5.4 on the outer window 5.1.
  • the masking strip 5.4 is opaque, preferably black, preferably designed as a ceramic black print.
  • the vehicle glazing 5 can have an inserted, opaque element as a further masking strip 5.4.
  • the further masking strip can be a colored thermoplastic intermediate layer, for example a colored or tinted PVB film.
  • the masking strip 5.4 is used to cover the bonds and connection structures arranged on the inside of the vehicle glazing 5.4.
  • the masking strip 5.4 can also be designed to be widespread in the lower (motor-side) section of the edge region 9. For this purpose, the section of the edge region 9 has a greater width than in the upper (roof-side) section of the edge region 9 of the vehicle glazing 5.
  • the width is understood to be the dimension of the masking strip 5.4 perpendicular to its extension.
  • the vehicle glazing 5 also includes the mirror structure 5.5, which is located on the inner window 5.2 and spatially in front of the masking strip 5.4.
  • the opaque masking strip 5.4 acts as an opaque background.
  • the mirror structure 5.5 is, for example, a mirror film, with the masking strip 5.4 completely covering the mirror film in the viewing direction.
  • the mirror structure 5.5 can be designed as a reflective coating.
  • the mirror structure 5.5 can have aluminum or nickel-chrome.
  • the mirror structure 5.5 is intended to reflect visible light.
  • the mirror structure 5.5 can reflect infrared radiation.
  • the mirror structure 5.5 is arranged on the second surface VI of the inner pane 5.2, with a transparent functional layer 5.6 being applied to the surface III of the inner pane 5.2, which is suitable for reflecting infrared radiation.
  • the functional layer 5.6 or a carrier film with the functional layer 5.6 can be used for the reflection of infrared radiation as part of the infrared-based monitoring function of a driver assistance system.
  • the functional layer 5.6 can be a single layer or a layer structure made up of several individual layers with a total thickness of less than or equal to 2 pm, particularly preferably less than or equal to 1 pm.
  • Functional layer 5.6 is designed to be electrically conductive and is provided as a heating device for heating the vehicle glazing 5.
  • the electrically conductive functional layer 5.6 contains, for example, a silver layer with a layer thickness of 15 nm.
  • the electrically conductive functional layer 5.6 extends over the entire outside surface III of the inner pane 5.2 with the exception of a peripheral edge area and optionally a local area, which is used as a communication, sensor or Camera windows are intended to ensure the transmission of electromagnetic radiation through the composite pane 1 (not shown) and are therefore not provided with the electrically conductive functional layer 5.6.
  • the functional layer 5.6 advantageously has no contact with the atmosphere and is protected from damage and corrosion, for example inside the vehicle glazing 5, by the thermoplastic intermediate layer 5.3. Because the functional layer 5.6 is positioned on the second surface III of the inner pane 5.2, it is protected there from environmental influences and contamination. In this embodiment, the mirror structure 5.5 and the functional layer 5.6 are separated from each other by the approximately 1.6 mm thick inner pane 5.2. At such a distance of less than 3 millimeters, very clear reflection images are achieved.
  • a protective layer 5.8 can be arranged on the surface of the mirror structure 5.5 facing a vehicle interior 10.
  • the protective layer can be a glass pane
  • the glass pane can be identical to the inner pane 5.2 and have a thickness of 1.5 mm or 1.6 mm.
  • the protective layer 5.8 protects the surface of the mirror structure 5.5 from the surrounding atmosphere.
  • the protective layer 5.8 provided thus forms, at least in the area of the mirror structure 5.5, the first, outer surface of the vehicle glazing 5 facing the interior 10 in the installed position and advantageously protects this and the mirror structure 5.5 from external influences and dirt.
  • the protective layer 5.8 can also be designed as a hydrophobic film, which is a coating with good resistance to deposits of, for example, liquids, salts, grease and dirt. For example, the formation of fingerprints when touched by a user can be prevented.
  • the vehicle glazing 5 can be designed without a protective layer 5.8, as shown in Figure 4.
  • Figure 3 shows a cross-sectional view of another embodiment of the vehicle glazing 5 in the area of the mirror structure 5.5.
  • the cross-sectional view of Figure 3 corresponds to the section line A-A' ( Figure 1) in the area Z of the mirror structure 5.5.
  • the masking strip 5.4 is arranged on the second surface II of the outer pane 5.1.
  • the mirror structure 5.5 is not located on the second surface IV of the inner pane 5.2, but rather between the inner pane 5.2 and the thermoplastic intermediate layer 5.3.
  • the mirror structure 5.5 and the functional layer 5.6 are arranged directly next to one another in this embodiment.
  • the functional layer 5.6 can also be designed as a functional layer 5.6 applied to a carrier film.
  • Figure 4 shows a cross-sectional view of a further embodiment of the vehicle glazing 5 in the area of the mirror structure 5.5.
  • the cross-sectional view of Figure 4 corresponds to the section line AA '( Figure 1) in area Z of the mirror structure 5.5.
  • the embodiment shown in Figure 4 essentially corresponds to the embodiment from Figure 2, so that only the differences will be discussed here and reference is otherwise made to the description of Figure 2.
  • the vehicle glazing 5 is designed without a protective layer 5.8.
  • 5 shows a top view of a first arrangement of three current bus conductors 5.7, which are applied to the electrically conductive functional layer 5.6.
  • the functional layer 5.6 has a surface resistance of 0.69 ohms/square.
  • a first strip-shaped busbar 5.7 ' is arranged essentially parallel to the lower edge of the vehicle glazing 5 in the lower edge region 9 of the vehicle glazing 5.
  • the first current bus conductor 5.7' is applied to the edge of the electrically conductive functional layer 5, which is arranged adjacent to the lower edge of the vehicle glazing 5.
  • the longer of its dimensions is referred to as length and the less long of its dimensions is referred to as width.
  • the length of the first current bus conductor 5.7' is 300 mm.
  • a second current collector 5.7" is arranged at a distance of approximately 165 mm from the first current collector 5.7'.
  • the second current collector 5.7" runs essentially parallel to the first current collector 5.7'.
  • the second current collector 5.7" is arranged in the lower edge region 9 of the vehicle glazing 5. As a result, a first heating zone H1 is formed between the first and second current collector 5.7', 5.7".
  • a third current bus conductor 5.7'' can be arranged in the upper edge region 9 of the vehicle glazing 5.
  • the third is applied to the edge of the electrically conductive functional layer 5.6, which is arranged adjacent to the upper edge O of the vehicle glazing 5.
  • the coated, transparent visible area of the vehicle glazing 5 extends between the second power bus conductor 5.7" and the third power bus conductor 5.7'".
  • the first, second and third power bus conductors 5.7', 5.7", 5.7'" have a constant material thickness of, for example, approximately 10 pm and are made of silver, for example.
  • the first, second and third current bus conductors 5.7', 5.7", 5.7'' are essentially the same length and the same width.
  • the second current collector 5.7" is arranged at a flat distance between the first and third current collector 5.7', 5.7'", so that the first heating zone H1 is formed between the first current collector 5.7' and the second collector 5.7", and a second heating zone H2 is formed between the second collector 5.7" and the third collector 5.7'".
  • the mirror structure 5.5 is located within the first heating zone H1 and forms a first reflection region B of the vehicle glazing 5.
  • a second reflection region T can be located within the second heating zone H2.
  • the reflection regions of the vehicle glazing can be selectively heated by the separate heating zones H1, H2 without the entire vehicle glazing being heated.
  • the second current collector 5.7" is arranged spatially closer to the first current collector 5.7' than to the third current collector 5.7'".
  • the first heating zone H1 overlaps the mirror structure 5.5 when viewed through the vehicle glazing 5 (seen from the interior 10).
  • the second heating zone H2 formed between the second and third current collector 5.7", 5.7'" extends at least over a part of the area of the vehicle glazing 5 intended for viewing.
  • the power bus conductors 5.7', 5.7", 5.7'' are adapted to the shape and curvature of the vehicle glazing 5.
  • An average distance between the second busbar 5.7" and the third busbar 5.7" can be, for example, 645 mm and an average distance between the second busbar 5.7" and the first busbar can be, for example, 165mm.
  • the first and third current bus conductors 5.7', 5.7'' are connected to the positive potential of an electrical energy source, not shown.
  • the second 5.7" power bus conductor is connected to the ground of the energy source.
  • the first, second and third current bus conductors 5.7', 5.7", 5.7'' are each led to the energy source via connecting lines (not shown here), so that a voltage can be applied to the power bus conductors 5.7', 5.7", 5.7''. If a voltage is applied to two adjacent current bus conductors 5.7', 5.7", 5.7'', a heating current flows through the intermediate heating zone of the electrically conductive functional layer 5.6.
  • the arrangement of the current bus conductors 5.7', 5.7", 5.7'' according to the invention makes it possible to heat the first heating zone H1 and the second heating zone H2 separately from one another. In this way, for example, only the first heating zone H1, which is located in an overlap with the mirror structure 5.5, can be heated.
  • the area near the lower edge tends to fog up or frost more quickly than the higher section, which is closer to the upper edge of the vehicle glazing 5.
  • the voltage source provides, for example, an on-board voltage that is common for motor vehicles, preferably from 12 V to 15 V and for example about 14 V, which can also be converted into a higher voltage, for example via voltage converters.
  • the voltage source can also have higher voltages, for example from 35 V to 45 V and in particular 42 V.
  • the first power bus conductor 5.7' and the second power bus conductor 5.7" are viewed through the vehicle glazing 5, depending on the direction of view, either through the Masking strip 5.4 or the mirror structure 5.5 is covered.
  • the third current bus conductor 5.7'" is covered by the masking strip 5.4 when viewed through the vehicle glazing 5 from the outside environment.
  • Figure 6 shows a top view of a second arrangement of the three current collectors 5.7', 5.7", 5.7'", which are applied to the electrically conductive functional layer 5.6.
  • the design shown in Figure 6 essentially corresponds to the design in Figure 5, so that only the differences are discussed here and otherwise reference is made to the description of Figure 5.
  • the first current collector 5.7' is shorter than in Figure 5.
  • the mirror structure 5.5 in Figure 6 has smaller dimensions than the mirror structure 5.5 in Figure 5.
  • One edge length of the mirror structure has a length of 150 mm.
  • the reflection area B has thus been significantly reduced.
  • the length of the first current collector 5.7' was adapted to the edge length of the mirror structure 5.5 and the first reflection area B.
  • the length of the first current collector 5.7' is 150 mm.
  • the area of the heating zone H1 has been reduced accordingly.
  • the length of the first current collector 5.7' was adapted to the edge length of the mirror structure 5.5 and the first reflection area B.
  • the length of the first current collector 5.7' is 150 mm.
  • the area of the heating zone H1 has been reduced accordingly.
  • FIG. 7 shows a top view of a third arrangement of the current bus conductors 5.7 ', 5.7".
  • the embodiment shown in FIG. 7 essentially corresponds to the embodiment from FIG. 5, so that only the differences will be discussed here and reference is otherwise made to the description of FIG. 5.
  • the vehicle glazing 5 only has two current bus conductors 5.7 ', 5.7".
  • the two mutually parallel current bus conductors 5.7', 5.7" are arranged vertically in the installed position of the vehicle glazing 5 on two opposite edges of the mirror structure 5.5.
  • the current bus conductors 5.7', 5.7" run vertically to the lower edge of the vehicle glazing 5, which is arranged downwards in the direction of the engine when the vehicle glazing is installed.
  • the length of the first and second current bus conductor 5.7', 5.7" was adapted to the edge length of the mirror structure 5.5 and the first reflection area B.
  • the length of the first and second current bus conductors 5.7', 5.7" is 165 mm.
  • the connecting cables of the current bus conductors 5.7', 5.7" can be led out of the vehicle glazing 5 directly at the motor edge of the vehicle glazing 5, in particular as a windshield. This becomes a cost-intensive solution where the connection cables have to be led out on one side of the vehicle glazing is avoided.
  • the embodiment in Figure 7 does not have a third current bus conductor 5.7''. There is no second reflection area T within the viewing area of the vehicle glazing 5.
  • the vehicle glazing 5 does not have a second heating zone H2.
  • FIG 8 shows a schematic view of an arrangement 1 according to the invention for a driver assistance system 100 of a vehicle.
  • the arrangement 1 according to the invention comprises the vehicle glazing 5.
  • the vehicle glazing 5 is, for example, a windshield.
  • the arrangement 1 includes a radiation source 7 for emitting infrared radiation 13 and a radiation receiver 8 for receiving infrared radiation (IR) and light, which are installed in a module (unit).
  • the radiation receiver 8 includes an 8.1 infrared sensor for receiving infrared radiation and a light sensor 8.2 for detecting light.
  • the light sensor 8.2 provides different (detection) information than the infrared sensor 8.1.
  • the module is installed here, for example, in the rear area of the dashboard 6 (also called the console).
  • the radiation receiver 8 can be arranged centrally on the dashboard of the vehicle. This arrangement of the radiation receiver 8 allows several faces to be detected at the same time.
  • the radiation source 7 is positioned such that the infrared radiation 13 is directed onto the surface IV of the inner pane 5.2 and is reflected there by the mirror structure 5.5 as the first reflection radiation 14 onto the face of the vehicle user 3.
  • the radiation source 7 is arranged such that the infrared radiation falls onto the face of a vehicle user 3 and in particular his eye area.
  • the first reflection radiation 14 is reflected from the face of the vehicle user 3 as a second reflection radiation 15 in the direction of the mirror structure 5.5.
  • the second reflection radiation is from the mirror structure 5.5
  • a light beam 11 is reflected from the face of the vehicle user 3 in the direction of the mirror structure 5.5 and is detected by the mirror structure 5.5 as a light reflection 12 by the light sensor 8.2.
  • a heating output of 250 W/m 2 per square meter is advantageous.
  • the functional layer 5.6 of the vehicle glazing 5 has a surface resistance of 0.69 ohms/square. In the case of icing, a heating output of 400 W/m 2 is advantageous. This results in high energy savings due to the lower power consumption of the local heating zones H1 and H2 than for an area in the entire surface of the vehicle glazing 5 (windshield).

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Abstract

L'invention concerne un vitrage de véhicule (5) comprenant : - une vitre externe (5.1) et une vitre interne (5.2) qui sont reliées par une couche intermédiaire thermoplastique (5.3), - une bande de masquage (5.4) qui est placée sur des zones d'une surface de la vitre externe, - une structure miroir (5.5) qui réfléchit un rayonnement infrarouge, - au moins une couche fonctionnelle (5.6) qui réfléchit un rayonnement infrarouge et - au moins deux conducteurs de bus (5.7', 5.7''), la structure miroir (5.5) et la bande de masquage (5.4) étant agencées dans une zone marginale (9) du vitrage de véhicule (5), la couche fonctionnelle (5.6) étant électroconductrice et les conducteurs de bus (5.7', 5.7'') étant agencés de telle sorte que la couche fonctionnelle (5.6) est utilisée comme dispositif de chauffage pour chauffer la structure miroir (5.5) et la structure miroir (5.5) ou une zone de la projection orthogonale de la structure miroir (5.5) étant placée au centre entre deux conducteurs de bus (5.7', 5.7'') qui sont agencés en parallèle.
PCT/EP2023/073795 2022-09-26 2023-08-30 Vitrage de véhicule et agencement pour un système d'aide à la conduite WO2024068173A1 (fr)

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EP22197728.3 2022-09-26
EP22197728 2022-09-26

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19927683C1 (de) 1999-06-17 2001-01-25 Sekurit Saint Gobain Deutsch Sonnen- und Wärmestrahlen reflektierende Verbundglasscheibe
WO2007101964A1 (fr) 2006-03-06 2007-09-13 Saint-Gobain Glass France Substrat muni d'un empilement a proprietes thermiques
EP1218307B1 (fr) 1999-09-23 2008-07-02 Saint-Gobain Glass France Vitrage muni d'un empilement de couches minces agissant sur le rayonnement solaire
DE102009006062A1 (de) 2009-01-24 2010-07-29 Saint-Gobain Sekurit Deutschland Gmbh & Co. Kg Infrarotstrahlung abschirmendes, für sichtbares Licht transparentes Laminat mit einem für Infrarotstrahlung durchlässigen optischen Fenster, Verfahren zu seiner Herstellung und seiner Verwendung
WO2012052315A1 (fr) 2010-10-19 2012-04-26 Saint-Gobain Glass France Vitre transparente
WO2013104439A1 (fr) 2012-01-10 2013-07-18 Saint-Gobain Glass France Disque transparent avec revêtement conducteur électrique
DE102016213066B4 (de) 2016-07-18 2020-10-01 Volkswagen Aktiengesellschaft Vorrichtung zur Fahrerbeobachtung
WO2022157022A1 (fr) 2021-01-19 2022-07-28 Saint-Gobain Glass France Vitre dotée d'un champ de détection pouvant être chauffé
WO2022179817A1 (fr) 2021-02-26 2022-09-01 Saint-Gobain Glass France Configuration de projection comprenant un panneau composite et un rayonnement à polarisation p
WO2022238101A1 (fr) * 2021-05-12 2022-11-17 Saint-Gobain Glass France Vitre composite à zones chauffantes et destinée à un ensemble de projection

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19927683C1 (de) 1999-06-17 2001-01-25 Sekurit Saint Gobain Deutsch Sonnen- und Wärmestrahlen reflektierende Verbundglasscheibe
EP1218307B1 (fr) 1999-09-23 2008-07-02 Saint-Gobain Glass France Vitrage muni d'un empilement de couches minces agissant sur le rayonnement solaire
WO2007101964A1 (fr) 2006-03-06 2007-09-13 Saint-Gobain Glass France Substrat muni d'un empilement a proprietes thermiques
DE102009006062A1 (de) 2009-01-24 2010-07-29 Saint-Gobain Sekurit Deutschland Gmbh & Co. Kg Infrarotstrahlung abschirmendes, für sichtbares Licht transparentes Laminat mit einem für Infrarotstrahlung durchlässigen optischen Fenster, Verfahren zu seiner Herstellung und seiner Verwendung
WO2012052315A1 (fr) 2010-10-19 2012-04-26 Saint-Gobain Glass France Vitre transparente
WO2013104439A1 (fr) 2012-01-10 2013-07-18 Saint-Gobain Glass France Disque transparent avec revêtement conducteur électrique
DE102016213066B4 (de) 2016-07-18 2020-10-01 Volkswagen Aktiengesellschaft Vorrichtung zur Fahrerbeobachtung
WO2022157022A1 (fr) 2021-01-19 2022-07-28 Saint-Gobain Glass France Vitre dotée d'un champ de détection pouvant être chauffé
WO2022179817A1 (fr) 2021-02-26 2022-09-01 Saint-Gobain Glass France Configuration de projection comprenant un panneau composite et un rayonnement à polarisation p
WO2022238101A1 (fr) * 2021-05-12 2022-11-17 Saint-Gobain Glass France Vitre composite à zones chauffantes et destinée à un ensemble de projection

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