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WO2025157878A1 - Système de chauffage ayant une vitre de véhicule - Google Patents

Système de chauffage ayant une vitre de véhicule

Info

Publication number
WO2025157878A1
WO2025157878A1 PCT/EP2025/051590 EP2025051590W WO2025157878A1 WO 2025157878 A1 WO2025157878 A1 WO 2025157878A1 EP 2025051590 W EP2025051590 W EP 2025051590W WO 2025157878 A1 WO2025157878 A1 WO 2025157878A1
Authority
WO
WIPO (PCT)
Prior art keywords
heating
vehicle
heating system
window
radiation source
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
PCT/EP2025/051590
Other languages
German (de)
English (en)
Inventor
Hadi RASTEGAR
Siyamak MEMAR JAVID
Valentin SCHULZ
Yahya MOTEMANI SHARABIANI
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 Sekurit France
Original Assignee
Saint Gobain Sekurit 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 Sekurit France filed Critical Saint Gobain Sekurit France
Publication of WO2025157878A1 publication Critical patent/WO2025157878A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B60H1/2215—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters
    • B60H1/2226—Electric heaters using radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B60H1/2215—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters
    • B60H1/2227—Electric heaters incorporated in vehicle trim components, e.g. panels or linings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B60H2001/2268—Constructional features
    • B60H2001/2293—Integration into other parts of a vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/56—Cleaning windscreens, windows or optical devices specially adapted for cleaning other parts or devices than front windows or windscreens
    • B60S1/58—Cleaning windscreens, windows or optical devices specially adapted for cleaning other parts or devices than front windows or windscreens for rear windows
    • B60S1/586—Cleaning windscreens, windows or optical devices specially adapted for cleaning other parts or devices than front windows or windscreens for rear windows including defroster or demisting means
    • 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
    • H05B2203/032—Heaters specially adapted for heating by radiation heating

Definitions

  • the invention relates to a heating system comprising a vehicle window, in particular comprising a rear window, and to the use thereof.
  • HVAC Heating, Ventilation, and Air Conditioning
  • Heated vehicle windows are well known. They have been used primarily as heated windshields in motor vehicles and offer the possibility of conveniently removing ice or condensed moisture from the windshield by heating it. Such windows feature transparent, electrically conductive coatings, particularly silver layers. The coatings are electrically connected so that a current can be passed through them. This heats up the coating, which is responsible for the heating effect. Examples include WO2013/104438A1 and DE202014010748 U1.
  • WO 2013/104439 A1 and EP 2803246 B1 disclose an electrically conductive coating for heating a windshield, which consists of different layers that can be used to slightly reduce the sheet resistance.
  • a further challenge for electrically conductive coatings, which are often multi-layered, for heating vehicle windows is the visually appealing appearance, as well as compliance with required standards, for example with regard to light transmission and color neutrality, especially for windshields but also rear windows for vehicles.
  • the use of printed heating wires is the most common method for defrosting and removing condensed moisture. This involves Joule heating, also known as ohmic heating or resistance heating.
  • the heating wires can be applied to a tempered window using silver printing. These clearly visible, printed stripes are undesirable, primarily from an aesthetic point of view.
  • the heating prints (printed heating wires) must be applied directly to the tempered rear window and electrically connected via cables and connectors, and functionally linked, if necessary, to a control system or the on-board electronics. This requires additional process steps, such as connecting cables and connectors, such as the printing and soldering of busbars (flat and bus bars), which must now be carried out using lead-free alloys as required.
  • the printed heating wires themselves which are usually implemented as silver printing, are also susceptible to damage. This can lead to failures of entire heating lines and, as a result of damage, to the formation of hotspots.
  • the cables and connections must, in turn, be optically concealed, for example using cover prints, in order to achieve an appealing aesthetic appearance.
  • DE 101 10 142 B4 discloses a method for operating a heating device for a plastic window of a motor vehicle with an infrared radiator, wherein the infrared radiator is designed to emit infrared rays with an intensity maximum in the wavelength range from approximately 1700 nm to approximately 1900 nm and to emit infrared rays with an intensity maximum in the wavelength range from approximately 2500 nm to approximately 2800 nm, and during a predetermined heating period, infrared rays with an intensity maximum at least in the wavelength range from approximately 2500 nm to approximately 2800 nm are emitted and after the heating period, only infrared rays with an intensity maximum in the wavelength range from approximately 1700 nm to approximately 1900 nm are emitted.
  • DE 10 2008 017330 A1 discloses an arrangement for heating a window of a motor vehicle, wherein the window is assigned a heating device for heating the window, wherein the heating device comprises a device for emitting electromagnetic radiation which can be radiated onto the window.
  • US 2010/187211 A1 discloses a heating system for the vehicle cabin, comprising: a first infrared radiator operable to heat a target surface in front of the first infrared radiator within an interior of a vehicle cabin; a temperature sensor disposed in front of the first infrared radiator for detecting a measured temperature in front of the first infrared radiator; and a controller operatively coupled to the first infrared radiator for selectively operating the first infrared radiator to a target surface temperature within the interior of the vehicle cabin when an estimated surface temperature of a target surface, determined based on the temperature measured by the temperature sensor, falls below a prescribed temperature range below the target surface temperature.
  • GB 2 470 038 A discloses an infrared-based defrosting system for a vehicle windshield and DE 10 2009 010303 A1 discloses a heating device and a method for heating a window pane of a motor vehicle.
  • DE 41 22 462 C2 discloses a motor vehicle with a vehicle compartment having a plurality of panes and with at least one electrically operated infrared radiator in a housing, which is directed towards the inside of a windscreen on a console provided inside the vehicle, wherein the housing of the infrared radiator is manufactured in one piece with the console provided on the windscreen.
  • DE 10 2019 211 821 A1 discloses a heating device for a vehicle, which has a sun visor with a front side and a back side, which is arranged on a ceiling of an interior of the vehicle and is associated with a window pane of the vehicle, wherein for the A sun visor is provided with a folded-in state and an unfolded state, the rear side facing the ceiling in the folded-in state, the front side facing the window pane in the unfolded state, a main heating source being arranged on the front side of the sun visor, which main heating source is designed to emit infrared radiation and to heat the window pane when the sun visor is in the unfolded state, and to heat the interior when the sun visor is in the folded-in state.
  • WO 2005/003047 A1 discloses a pane that can be heated using non-visible light.
  • the pane is made of a material that is transparent to visible light and absorbs non-visible light.
  • the present invention is therefore based on the object of providing a heating system comprising a vehicle window, in particular a rear window, which can be operated particularly selectively, effectively and energy-efficiently and at the same time enables a visually appealing appearance of the vehicle windows, and is simple and cost-effective to manufacture.
  • the vehicle window is designed as a laminated glass pane or as a single glass pane.
  • the vehicle windscreen is constructed as a laminated glass pane or a single pane of glass. Therefore, the vehicle windscreen is not a plastic pane.
  • the heating of the vehicle window according to the invention i.e., defrosting or the removal of condensed moisture (defogging) using IR radiation, can be carried out significantly faster, more efficiently, and, in particular, more energy-efficiently than with the previously known electrically heated wires, electrically conductive heating layers, or heating using the heating, ventilation, and air conditioning (HVAC) method.
  • HVAC heating, ventilation, and air conditioning
  • the radiation source is an IR radiation source that directly impacts the vehicle window, preferably with a spatial obstacle between the radiation source and the window surface, and can act on it.
  • the infrared wavelength range of the radiation source provided in the invention, it advantageously has a high transmission value of > 80% for glass, while water molecules and ice exhibit high absorption coefficients in this electromagnetic radiation range, particularly at 1450 nm. This allows for selective, rapid, and efficient removal of condensed moisture (defogging) or frost and ice (defrosting) without the need to heat the vehicle window itself.
  • the heating system according to the invention is particularly suitable for electric vehicles.
  • the radiation source(s) is (are) expediently connected to a power supply device.
  • the radiation source of the heating device can, in particular, be a radiation source similar to an LED, which can also be referred to as an "IR-emitting diode.”
  • the LEDs are arranged and soldered on a printed circuit board (PCB) in the heating device in the usual way.
  • PCB printed circuit board
  • the PCB in turn, can be arranged and mounted on a suitable heat sink, for example, on a metal plate.
  • the radiation sources can, for example, be strip-shaped or spot-shaped and arranged and fastened in or on the vehicle interior component. Other geometric shapes or arrangements, for example in a matrix, are possible. Several individual radiation sources can also be arranged next to one another, spaced apart, or in a strip-shaped manner (close to one another). If several spot-shaped LEDs are arranged next to one another, in other words, a multi-part, strip-shaped radiation source can be designed as a heating device. This makes it possible to flexibly adapt the number and intensity of the radiation sources to the requirements for heating the respective vehicle window, for example with regard to the spatial and geometric conditions and the energy required for efficient heating.
  • the heating area of the vehicle window is exposed to an energy of at least 1 mW/cm 2 by one or more IR radiation sources assigned to this area in order to demist (removal of moisture) or defrosting (removal of frost and ice).
  • heating is achieved with an energy input of between 1 mW/cm 2 and 90 mW/cm 2 , for example between 2 mW/cm 2 and 80 mW/cm 2 .
  • using an LED with a wavelength in the range of approximately 1.45 pm results in an energy input of over 80 mW/cm 2 .
  • a heating area is a surface area of the vehicle window intended for heating by the radiation source. This can be the entire surface of the vehicle window or, for example, only the driver-relevant viewing area of the rear window.
  • the window surface can have multiple heating areas, or a heating area can be divided into several sub-heating areas, also called heating zones, which are then assigned to one or more heating devices with the radiation sources. Heating areas and/or heating zones can be arranged adjacent to one another, as required, or spaced apart from one another within the vehicle window surface.
  • the vehicle window has multiple heating areas or a heating area with multiple heating zones, each of which is preferably assigned at least one heating device with at least one radiation source, these assigned heating devices and, if applicable, the radiation sources of these heating devices or heating zones can be switched and operated independently of one another as needed. This advantageously further contributes to the heating system being operated particularly energy-efficiently.
  • the IR radiation source is functionally connected to at least one environmental sensor, in particular a temperature and/or humidity sensor and/or conductivity sensor.
  • the IR radiation source can be functionally connected to at least one control unit and/or on-board electronics.
  • the vehicle window preferably the rear window, has a plurality of heating areas and/or one or more heating areas with a plurality of heating zones, each of which is assigned at least one radiation source and these assigned radiation sources can be switched and operated independently of one another.
  • the heating device can be functionally connected to a controller, in particular to on-board electronics, and/or to one or more environmental sensors, and these can communicate with each other.
  • the environmental sensor(s) can in particular comprise one or more temperature sensors, humidity sensors, conductivity sensors, and/or a variety of other sensors, which can be configured to detect environmental conditions and conditions of the vehicle windows in connection with the removal of moisture mist (defogging) and/or frost on the windows of a vehicle.
  • the controller can monitor the status of the environmental sensors and, for example, automatically switch on the heating system to remove ice or condensate from the vehicle windows and/or to prevent frost and/or moisture from accumulating on the vehicle windows.
  • a controller in functional connection with the sensors can identify whether moisture is detected by the humidity sensor and/or whether the temperature sensor registers a temperature below a freezing threshold. Accordingly, based on the detected humidity level and/or the specified temperature, the control system can determine whether a condition exists to automatically activate the heating system, i.e., to heat one or more of the vehicle's windows and demist. Manual activation of the heating system can also be provided as an alternative or in addition.
  • the vehicle window is preferably a rear window.
  • the vehicle window is the rear window of a passenger car
  • the vehicle interior component is, for example, a seat, in particular a headrest and/or the backrest of a seat, in particular a rear seat in the passenger compartment.
  • the vehicle interior component can also be, for example, a trunk cover or part of the vehicle interior trim.
  • the heating device is a heating module comprising multiple radiation sources, and the heating module is connected to the vehicle interior component, optionally as a prefabricated unit.
  • the connection can be formed, for example, by adhesive bonding or other fastening means.
  • the vehicle window is designed according to the invention as a laminated glass pane or as a single pane of glass.
  • the vehicle window is designed as a conventional, tempered laminated glass pane or as a tempered and toughened single-pane safety glass (ESG).
  • ESG tempered and toughened single-pane safety glass
  • the vehicle window can, in particular, be designed as a conventional, tempered laminated glass pane or, as a rear window, usually as a tempered and toughened single-pane safety glass (ESG).
  • ESG tempered and toughened single-pane safety glass
  • the heating system according to the invention requires no modifications or devices in, on, or on the vehicle window. Vehicle windows are already manufactured as standard from materials that exhibit high transmission for the electromagnetic infrared radiation of the radiation sources
  • a vehicle window designed as a laminated glass pane comprises a first glass pane and a second glass pane, which are connected via a thermoplastic intermediate layer.
  • the thermoplastic intermediate layer comprises at least one layer of a thermoplastic bonding material, which preferably contains or consists of ethylene-vinyl acetate (EVA), polyvinyl butyral (PVB), or polyurethane (PU), or mixtures or copolymers or derivatives thereof, particularly preferably PVB.
  • the thermoplastic intermediate layer is typically formed from at least one thermoplastic film.
  • the thickness of the film is preferably from 0.3 mm to 2 mm, with standard thicknesses of 0.36 mm and 0.76 mm being particularly common.
  • the thermoplastic intermediate layer can also comprise multiple layers of thermoplastic material and, for example, be formed from multiple polymer films arranged flatly one above the other.
  • the vehicle window is preferably a window pane of a motor vehicle, rail vehicle, ship, or aircraft. It is particularly preferably the windshield, side window, rear window, or roof window of a passenger car or truck, most preferably the rear window.
  • the vehicle is an electric vehicle. In other words, the advantages of the heating system according to the invention are particularly evident in electric vehicles.
  • the vehicle window i.e., the first pane and the second pane of the laminated glass pane or the pane of the single-pane glass pane, is preferably made of soda-lime glass, which is particularly common for rear windows.
  • the vehicle window can also be made of other types of glass (e.g., borosilicate glass, quartz glass, aluminosilicate glass).
  • the thickness of the pane can vary widely. Preference is given to panes with a thickness in the range of 0.5 mm to 10 mm, more preferably 1 mm to 5 mm.
  • the various embodiments of the invention can be implemented individually or in any combination. In particular, the features mentioned above and those to be explained below can be used not only in the specified combinations, but also in other combinations or on their own without departing from the scope of the present invention, unless they are explicitly described and described as alternatives to one another.
  • water molecules have a very high absorption coefficient
  • the vehicle window whether designed as a laminated glass pane or as a single pane of glass, has a low absorption coefficient, which means that a very selective heating effect can be achieved.
  • the heating effect does not depend on the heating of the vehicle window itself, but is achieved selectively through the excitation of the water molecules by the IR radiation.
  • the heating effect therefore occurs much more quickly than with previously used heating devices, and in addition, there is no heat loss due to convection and the large surface area of the vehicle window.
  • the dependence of the effect on the outside temperature is therefore significantly lower than with previously known heating devices, which first have to heat the windows to ultimately remove condensation and ice. This is another advantage of the heating system according to the invention.
  • the invention further relates to the use of a heating system according to the invention, as described above in various embodiments, in means of transport for traffic on land, in the air or on water, preferably in motor vehicles, particularly preferably in electric vehicles, preferably as a heating system for vehicle rear windows.
  • Figure 1 a schematic plan view of the heating device of a heating system implemented according to the invention in a car (partial view);
  • Figure 1b schematic plan view of a rear window of a car heated according to the invention (partial view from the rear);
  • Figure 1c is a schematic view of the vehicle interior (partial view of the passenger compartment with rear seat) with a heating system according to the invention for a rear window;
  • Figure 2 shows an absorption spectrum of water (liquid state).
  • FIG 1a shows, in one embodiment, a schematic plan view of the heating device of a heating system implemented according to the invention in a passenger car (PV) 10, which is shown in a partial view with an open trunk lid encompassing the vehicle window 1, namely the rear window.
  • the heating device comprises several IR radiation sources 3 as heating elements, each arranged in rows on the back of the headrests 4 of the rear seats in the vehicle interior 2.
  • the heating device includes the usual, necessary connections and cables.
  • the LEDs are usually soldered to a circuit board, which is arranged, for example, on a cooling plate (heatsink).
  • the IR rays are directed with their beam path (beam direction) P of the heating elements for heating onto the vehicle window 1 or can, if necessary, be directed onto the window surface as a heating area H manually or automatically using the heating device and/or heating module.
  • the transmission of glass in this IR radiation range is particularly high with TL > 80% and only a small part is absorbed.
  • the IR radiation sources 3 are designed and/or arranged in a strip shape. The arrows indicate the radiation direction of the IR radiation by way of example and schematically.
  • the IR radiation is absorbed by the water molecules, which are heated up and thereby evaporated when excited by the radiation.
  • a particular advantage of the invention is that, in particular, IR radiation can be used with the most precise wavelength possible and in the frequency range in which water molecules have a very high absorption coefficient, thus achieving a very selective heating effect. This contributes to achieving the heating effect particularly quickly and in an energy-saving manner.
  • the heating effect does not depend on the heating of the vehicle window 1 itself, but is achieved selectively by the excitation of the water molecules by the IR radiation.
  • the heating effect therefore occurs much more quickly than with previously used heating devices, and in addition, there is no heat loss due to convection and the large surface area of the vehicle window 1.
  • the dependence of the effect on the outside temperature is also significantly lower than with previously known heating devices, which must first heat the windows to finally remove condensate and ice.
  • the heating device can be functionally connected to a controller (not shown), in particular to on-board electronics, and/or to one or more environmental sensors (not shown), and these can communicate with each other.
  • the environmental sensor(s) can in particular comprise one or more temperature sensors, humidity sensors, conductivity sensors, and/or a variety of other sensors, which can be configured to detect environmental conditions and states, in particular of the rear window, in connection with the removal of moisture mist (defogging) and/or frost on the windows of a vehicle 10.
  • the controller can monitor the status of the environmental sensors and, for example, automatically switch on the heating system to remove ice or condensate from the vehicle windows and/or to prevent frost and/or moisture from accumulating on the vehicle windows.
  • a controller in functional connection with the sensors can identify whether moisture is detected by the humidity sensor and/or whether the temperature sensor registers a temperature below a freezing threshold. Accordingly, based on the detected humidity level and/or the specified temperature, the controller can determine whether a condition exists to automatically activate the heating system to heat one or more of the vehicle's windows and demist. Manual activation of the heating system can also be provided alternatively or additionally.
  • FIG 1b shows a schematic plan view of a vehicle window 1 of a passenger car 10, heated according to the invention, in a view from the rear.
  • the vehicle window 1 is, in the embodiment shown in Figure 1b, a rear window and, in this embodiment, has a heating area H, which is divided, for example, into three heating zones H1, H2 and H3 arranged directly adjacent to one another.
  • the heating area H can be the entire window surface or only a partial area of the vehicle window 1, for example a viewing area for a driver, which is to be freed from fogging caused by condensed moisture or ice that obstructs the view.
  • the vehicle window 1 has a heating area H with a plurality of heating zones H1, H2 and H3 arranged next to one another, to which at least one heating device, for example the heating modules M1, M2 and M3 (shown in Figure 1a), is preferably assigned, each of which has a plurality of IR radiation sources 3.
  • at least one heating device for example the heating modules M1, M2 and M3 (shown in Figure 1a)
  • the heating modules M1, M2 and M3 shown in Figure 1a
  • IR radiation sources 3 or, as shown here, heating modules M1, M2, M3 and M4 with a plurality of IR radiation sources 3, are assigned to the heating areas H or the heating zones H1, H2, H3 of a heating area H, these heating devices can preferably be switched and operated independently of one another.
  • the IR radiation sources 3 of a heating module M 1 , M 2 and M 3 can also be switched and operated independently or independently of one another. The switching can be automated by means of the functional connection to the environmental sensors and/or a controller, as described in Figure 1a.
  • the upward-facing edge is referred to as the upper edge (roof edge).
  • the downward-facing edge of the vehicle window 1 in the installed position (motor edge) is referred to as the lower edge.
  • the edges running in between are referred to as side edges.
  • Figure 1c shows a schematic view of the vehicle interior 2 in a partial view of the passenger compartment with a rear seat with a heating system according to the invention with a vehicle window 1, which is a rear window, wherein the heating modules M1, M2, M3 and M4 with the IR radiation sources 3 (shown in Figure 1a) are arranged on the back of the headrests 4a or the backrest 4b of the seats or on the trunk cover 4c (vehicle interior installation part) or in the wall paneling of the passenger compartment.
  • the IR radiation sources 3 are aligned with their beam direction towards the vehicle window 1 as the heating area H.
  • the heating modules can also preferably be arranged with several radiation sources, for example on a carrier plate (panel), which can then be connected as a structural unit to a vehicle interior installation part, optionally movable and alignable with the vehicle window 1, for example electrically controlled.
  • a carrier plate panel
  • Such arrangements may be provided as pre-assembled units, which may simplify manufacturing.
  • Figure 2 shows the absorption spectrum of water in the liquid state. The diagram shows that water molecules have a particularly high absorption coefficient, for example at wavelengths of approximately 1.45 pm, 1.9 pm and 2.95 pm (marked with vertical arrows).
  • the transmission in the relevant wavelength range is particularly high at > 80%, so that the radiation energy can be used efficiently for defrosting and evaporating water in the corresponding heating areas of the vehicle window 1, for example a rear window.
  • the radiation source 3 can, for example, be an InGaAsP diode with a wavelength of 1450 nm. This wavelength corresponds to a wavelength range in which water molecules have a particularly high absorption coefficient, which also results in particularly high excitation of the water molecules and results in particularly fast, selective, and efficient evaporation.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

L'invention concerne un système de chauffage comprenant une vitre de véhicule (1), en particulier une vitre arrière, et au moins un dispositif de chauffage, caractérisé en ce que la vitre de véhicule (1) est conçue sous la forme d'une vitre en verre feuilleté ou en tant que vitre de fenêtre individuelle, le dispositif de chauffage comprend, en tant qu'élément chauffant, au moins une source de rayonnement IR (3) ayant une plage de longueurs d'onde IR comprise entre λ = 1,4 µm et 1,5 µm, et la source de rayonnement IR (3) est disposée dans ou sur une partie d'installation intérieure de véhicule (4) et la source de rayonnement IR (3) est en outre dirigée avec son trajet de faisceau directement sur au moins une région de chauffage plane (H) de la vitre de véhicule (1) ou peut être dirigée sur la région de chauffage (H). L'invention concerne également l'utilisation d'un tel système de chauffage, de préférence dans des véhicules automobiles.
PCT/EP2025/051590 2024-01-26 2025-01-23 Système de chauffage ayant une vitre de véhicule Pending WO2025157878A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP24154052 2024-01-26
EP24154052.5 2024-01-26

Publications (1)

Publication Number Publication Date
WO2025157878A1 true WO2025157878A1 (fr) 2025-07-31

Family

ID=89767770

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2025/051590 Pending WO2025157878A1 (fr) 2024-01-26 2025-01-23 Système de chauffage ayant une vitre de véhicule

Country Status (1)

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WO (1) WO2025157878A1 (fr)

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7012573U (de) 1970-04-07 1970-09-03 Seehase Juergen Heizeinrichtung fuer die heckscheibe eines kraftfahrzeugs.
DE4122462C2 (de) 1991-07-06 1994-03-31 Johann Binder Kraftfahrzeug mit einem auf die Frontscheibe gerichteten Infrarotstrahler
WO2005003047A1 (fr) 2003-07-03 2005-01-13 Philips Intellectual Property & Standards Gmbh Vitre pouvant etre chauffee par une lumiere invisible
DE10110142B4 (de) 2001-03-02 2005-06-09 Exatec Gmbh & Co. Kg Verfahren zum Betreiben einer Heizeinrichtung für eine Kunststoffscheibe eines Kraftfahrzeuges
DE102008017330A1 (de) 2008-04-04 2009-10-08 Daimler Ag Scheibe für Heizvorrichtung
DE102009010303A1 (de) 2009-02-24 2009-10-29 Daimler Ag Heizvorrichtung und Verfahren zum Erwärmen einer Fensterscheibe eines Kraftfahrzeugs
US20100187211A1 (en) 2009-01-26 2010-07-29 Nissan Technical Center North America, Inc. Vehicle cabin heating system
GB2470038A (en) 2009-05-07 2010-11-10 Nissan Motor Mfg An apparatus for defrosting a vehicle windscreen
WO2013104438A1 (fr) 2012-01-10 2013-07-18 Saint-Gobain Glass France Disque transparent avec revêtement conducteur électrique
WO2013104439A1 (fr) 2012-01-10 2013-07-18 Saint-Gobain Glass France Disque transparent avec revêtement conducteur électrique
DE202014010748U1 (de) 2014-12-18 2016-07-13 Saint-Gobain Glass France Verbundscheibe mit korrosionsgeschützter funktioneller Beschichtung
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