WO2021246326A1 - 自動車用窓ガラス - Google Patents

自動車用窓ガラス Download PDF

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Publication number
WO2021246326A1
WO2021246326A1 PCT/JP2021/020429 JP2021020429W WO2021246326A1 WO 2021246326 A1 WO2021246326 A1 WO 2021246326A1 JP 2021020429 W JP2021020429 W JP 2021020429W WO 2021246326 A1 WO2021246326 A1 WO 2021246326A1
Authority
WO
WIPO (PCT)
Prior art keywords
automobile
window glass
wiring
glass
heat generating
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.)
Ceased
Application number
PCT/JP2021/020429
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
浩一 市田
芳男 小坂
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.)
AGC Inc
Original Assignee
Asahi Glass Co Ltd
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 Asahi Glass Co Ltd filed Critical Asahi Glass Co Ltd
Priority to DE112021001858.2T priority Critical patent/DE112021001858T5/de
Priority to JP2022528799A priority patent/JP7635783B2/ja
Priority to CN202180039806.XA priority patent/CN115884903A/zh
Publication of WO2021246326A1 publication Critical patent/WO2021246326A1/ja
Priority to US18/072,181 priority patent/US20230093219A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H05B3/86—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields the heating conductors being embedded in the transparent or reflecting material
    • 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
    • B60S1/023—Cleaning windscreens, windows or optical devices including defroster or demisting means
    • B60S1/026—Cleaning windscreens, windows or optical devices including defroster or demisting means using electrical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
    • B60R1/001—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles integrated in the windows, e.g. Fresnel lenses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
    • B60R1/20—Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
    • 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
    • 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
    • H05B2203/003—Heaters using a particular layout for the resistive material or resistive elements using serpentine layout
    • 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
    • H05B2203/008—Heaters using a particular layout for the resistive material or resistive elements with layout including a portion free of resistive material, e.g. communication window
    • 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
    • H05B2203/011—Heaters using laterally extending conductive material as connecting 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
    • H05B2203/016—Heaters using particular connecting means

Definitions

  • the present invention relates to a window glass for an automobile.
  • Patent Document 1 proposes a windshield equipped with an information acquisition device such as a camera that acquires information outside the vehicle.
  • an information acquisition area facing the camera and through which light passes is arranged adjacent to the shielding layer or so as to be surrounded by the shielding layer, and this information acquisition area is defined as an information acquisition area.
  • the heating part By heating by the heating part, the fogging of the information acquisition area is removed.
  • the information acquisition region heating section described in Patent Document 1 has a pair of bus bar sections and one heating wire connected to both bus bar sections.
  • the pair of bus bar portions are arranged so as to be included in the shielding layer in the visual field direction, and the heating lines are arranged so as to be folded back at a plurality of points at intervals and pass over the information acquisition region.
  • an automobile window glass having an antifogging function (including a snow melting function) as disclosed in Patent Document 1 is designed under three conditions of voltage, power density and heat generation range.
  • the heating wire which is a heat generating portion, the resistivity (the range of the adjustable resistance value) is determined for each material used.
  • This heating wire is connected to the battery (power source) of the automobile via wiring, and a constant voltage (for example, 11 to 14 V) is applied from the battery.
  • a means for adjusting the current flowing through the heating wire is required, and as an example of the means, a heating wire arranged outside the heat generation region, that is, a wire length arranged between the bus bar portion and the heat generation region is used. It is possible to adjust. That is, the resistance value of the heating wire itself is changed by adjusting the wire length of the heating wire arranged outside the heat generating region, and the current flowing through the heating wire is adjusted.
  • a plurality of brackets such as a camera bracket, a mirror base for an inner mirror, or a bracket for a distance measuring sensor or a rain (raindrop) sensor are fixed to the windshield.
  • the portion of the heating wire arranged outside the heat generating region where the wire length is lengthened (hereinafter referred to as "extra length wire") must be disposed so as to bypass these adhesive regions. Therefore, the area for arranging the extra length line with respect to the windshield is inevitably widened.
  • the area where the extra length lines are arranged is to be hidden by the shielding layer, the area of the shielding layer becomes large, so that there is a problem that the field of view of the occupant of the automobile is narrowed.
  • the present invention has been made in view of such circumstances, and an object of the present invention is to provide an automobile window glass having an antifogging function, which can secure a good view of an automobile occupant.
  • the present invention is an automobile window glass configured to be attached to an automobile in order to achieve the above object
  • the automobile window glass is an information communication device configured to be mounted in the automobile. And with wiring configured to connect the conductor and the power source arranged in the vehicle, the conductor is such that the information communication device transmits information through the window glass of the vehicle and / /.
  • an automobile window glass is provided which has a heat generating portion capable of heating a receivable information transmission / reception region and is configured to have an electric resistor between the heat generating portion and a power source.
  • a conductor having a heat generating portion capable of heating an information transmission / reception region in which an information communication device can transmit and / or receive information via the automobile window glass.
  • the extra length wire which is a portion where the wire length of the conductor (heating wire) arranged outside the information transmission / reception region is lengthened, can be shortened, and the arrangement area of the extra length wire can be reduced. Good visibility of the occupants can be secured.
  • FIG. 1 Front view of the windshield according to the embodiment of the present invention as viewed from the inside of the vehicle. Schematic cross-sectional view of the windshield along line 2-2 in FIG. A front view showing an enlarged upper center portion of the windshield shown in FIG.
  • Configuration diagram corresponding to the electric circuit diagram shown in FIG. A plan view showing a configuration example of the first wiring in the first example of the arrangement example of the electric resistor.
  • FIG. 14A and 14B are explanatory views showing a first example of a sheet-shaped heating element.
  • 15A and 15B are explanatory views showing a second example of a sheet-shaped heating element.
  • the window glass for an automobile includes an information communication device, a conductor, and wiring for connecting the conductor and a power source.
  • the conductor has a heat generating portion capable of heating the information transmission / reception region.
  • An electric resistor is provided between the heat generating portion and the power supply.
  • the window glass for an automobile a windshield made of laminated glass will be described as an example, but the present invention is not limited to this.
  • the automobile window glass of the present invention can be applied to other window glasses such as rear glass, door glass or roof glass made of a single glass plate.
  • FIG. 1 is a front view of the windshield 10 according to the embodiment as viewed from the inside of the vehicle. Further, FIG. 2 is a schematic cross-sectional view of the windshield 10 along line 2-2 of FIG.
  • the windshield 10 shown in FIGS. 1 and 2 is located inside the first glass plate (hereinafter, abbreviated as “glass plate”) 12 located on the outside of the vehicle when attached to the vehicle of the automobile.
  • the second glass plate (hereinafter, abbreviated as “glass plate”) 14 and the second glass plate (hereinafter, abbreviated as “glass plate”) 14 are laminated glass arranged to face each other.
  • an interlayer film 16 is arranged between the glass plate 12 and the glass plate 14, and the glass plate 12 and the glass plate 14 are joined by the interlayer film 16.
  • the glass plates 12 and 14 for example, soda lime glass, aluminosilicate glass, borosilicate glass, non-alkali glass, inorganic glass such as quartz glass, or organic glass can be used.
  • the glass plate 12 arranged on the outside of the vehicle is preferably inorganic glass from the viewpoint of scratch resistance, and is preferably soda lime glass from the viewpoint of moldability.
  • the glass plates 12 and 14 are soda lime glass, clear glass, green glass containing an iron component in a predetermined amount or more, and UV-cut green glass can be preferably used.
  • the glass plates 12 and 14 are inorganic glass, the glass plates 12 and 14 can be manufactured by, for example, a float method.
  • examples of the material of the organic glass include polycarbonate, for example, an acrylic resin such as polymethylmethacrylate, and a transparent resin such as polyvinyl chloride and polystyrene.
  • the plate thickness of the glass plate 12 is preferably 1.1 mm or more and 3 mm or less.
  • the thickness of the glass plate 12 is more preferably 1.8 mm or more and 2.8 mm or less, more preferably 1.8 mm or more and 2.6 mm or less, and 1.8 mm or more and 2.2 mm or less. It is more preferably 1.8 mm or more and 2.0 mm or less.
  • the plate thickness of the glass plate 14 is preferably 0.3 mm or more and 2.3 mm or less.
  • the thickness of the glass plate 14 is 0.3 mm or more, the handleability is good, and when the thickness is 2.3 mm or less, the weight of the windshield 10 is reduced and the fuel efficiency of the vehicle is improved, which is preferable.
  • the total thickness of the windshield 10 is preferably 2.8 mm or more and 10 mm or less. If the total thickness of the windshield 10 is 2.8 mm or more, sufficient rigidity can be ensured. Further, when the total thickness of the windshield 10 is 10 mm or less, sufficient transmittance can be obtained and haze can be reduced.
  • the thicknesses of the glass plates 12 and 14 may be the same or different.
  • One or both of the glass plates 12 and 14 may have a cross-sectional wedge shape in which the plate thickness increases from the lower side to the upper side of the windshield 10 with the windshield 10 attached to the vehicle.
  • the glass plates 12 and 14 are bent and molded after being molded by the float method or the like and before being joined by the interlayer film 16. Bending molding is performed by softening the glass plates 12 and 14 by heating. Specifically, the glass plates 12 and 14 can be bent and molded by gravity molding, press molding or the like after molding by the float method.
  • the heating temperature of the glass plates 12 and 14 during bending is 550 to 700 ° C., which is near the softening point temperature.
  • the windshield 10 may have a single bending shape that is bent only in one direction, for example, when attached to the opening of the vehicle, only in the front-rear direction or the vertical direction of the vehicle. Further, the windshield 10 may have a compound bending shape that is bent in the front-rear direction and the up-down direction of the vehicle.
  • the radii of curvature of the glass plates 12 and 14 in the windshield 10 may be the same or different.
  • the radius of curvature of the bent shape of the glass plates 12 and 14 may be 1,000 to 100,000 mm.
  • the glass plates 12 and 14 may be unreinforced glass or tempered glass.
  • Untempered glass is made by molding molten glass into a plate shape and slowly cooling it.
  • the tempered glass may be either physically tempered glass (for example, wind-cooled tempered glass) or chemically tempered glass.
  • physically tempered glass a compressive stress layer is formed on the glass surface due to the temperature difference between the glass surface and the inside of the glass by operations other than slow cooling, such as quenching the glass plate uniformly heated in bending molding from near the softening point temperature.
  • the glass surface may be strengthened by causing the above.
  • the glass surface may be strengthened by generating compressive stress on the glass surface by an ion exchange method or the like after bending molding.
  • glass that absorbs ultraviolet rays or infrared rays may be used.
  • the glass plates 12 and 14 are preferably transparent, but may be colored glass plates to the extent that the transparency is not impaired.
  • the visible light transmittance of the windshield 10 is preferably 70% or more.
  • the windshield 10 has a shielding layer 18 formed on the peripheral edge thereof.
  • the shielding layer 18 can be formed, for example, by applying a ceramic color paste containing a meltable glass frit containing a black pigment on a glass plate by screen printing or the like and firing the paste layer 18, but the shielding layer 18 is not limited thereto.
  • the shielding layer 18 may be formed by, for example, applying an organic ink containing a black or dark pigment on a glass plate by screen printing or the like and drying it.
  • the shielding layer 18 may be a colored interlayer film or a colored film having a light-shielding property, or a combination of the colored interlayer film and the colored ceramic layer.
  • the colored film may be integrated with an infrared reflective film or the like.
  • the shielding layer 18 can suppress deterioration of the resin such as urethane that holds the peripheral edge of the windshield 10 on the vehicle body due to ultraviolet rays.
  • FIG. 2 illustrates a windshield 10 in which a shielding layer 18 is formed on an inner surface of a glass plate 12, but the shielding layer 18 is formed on at least one of the glass plates 12 and 14. You just have to. Further, the forming surface of the shielding layer 18 is preferably the inner surface of the glass plates 12 and 14. Further, the shielding layer 18 may be provided on the entire circumference of the peripheral edge portion of the windshield 10, but may be formed on a part of the edge portion of the windshield 10.
  • thermoplastic resin is often used, for example, a plasticized polyvinyl acetal resin, a plasticized polyvinyl chloride resin, a saturated polyester resin, a plasticized saturated polyester resin, a polyurethane resin, and a plasticized polyurethane.
  • Thermoplastic resins conventionally used for this type of application such as based resins, ethylene-vinyl acetate copolymer resin (hereinafter, also referred to as "Ethylene vinyl acetate: EVA”), ethylene-ethyl acrylate copolymer resin, etc. Can be mentioned.
  • plastics can be obtained because they have an excellent balance of various performances such as transparency, weather resistance, strength, adhesive strength, penetration resistance, impact energy absorption, moisture resistance, heat insulation, and sound insulation.
  • a polyvinyl acetal-based resin is preferably used. These thermoplastic resins may be used alone or in combination of two or more. "Plasticization" in the above-mentioned plasticized polyvinyl acetal-based resin means that it is plasticized by adding a plasticizer. The same applies to other plasticized resins.
  • polyvinyl acetal-based resin examples include polyvinyl formal resin obtained by reacting polyvinyl alcohol (hereinafter, also referred to as “polyvinyl alcohol: PVA”) with formaldehyde, and polyvinyl acetal-based resin in a narrow sense obtained by reacting PVA with acetaldehyde.
  • PVA polyvinyl alcohol
  • PVB polyvinyl butyral
  • PVB is preferable because it has an excellent balance of various performances such as transparency, weather resistance, strength, adhesive strength, penetration resistance, impact energy absorption, moisture resistance, heat insulation, and sound insulation.
  • These polyvinyl acetal-based resins may be used alone or in combination of two or more.
  • the material forming the interlayer film 16 is not limited to the thermoplastic resin.
  • the glass plates 12 and 14 are joined by heat-pressing at a temperature at which the interlayer film 16 softens.
  • a temperature at which the interlayer film 16 softens For example, when a PVB film is used as the interlayer film 16, an autoclave device is used, the heating temperature is preferably about 130 ° C., and the pressing force is preferably about 1 MPa. When an EVA film is used, the heating temperature is preferably about 90 ° C., and the pressing force is preferably about 1 MPa. Since the method for manufacturing a laminated glass using the above-mentioned film is well known, the description thereof will be omitted here.
  • the thickness of the interlayer film 16 is preferably 0.5 mm or more and 3.0 mm or less.
  • the thickness of the interlayer film 16 is 0.5 mm or more, the penetration resistance required for the windshield 10 can be ensured. Further, when the thickness of the interlayer film 16 is 3 mm or less, the weight is reduced and the handleability is improved.
  • the interlayer film 16 may have a region having a sound insulation function, an infrared ray shielding function, an ultraviolet ray shielding function, a shade band (a function of reducing visible light transmittance), and the like. Further, the interlayer film 16 may have two or more layers. For example, when the interlayer film 16 is composed of three layers and the hardness of the central layer is lower than the hardness of both layers, the sound insulation is improved.
  • the interlayer film 16 may have a wedge shape with a cross section in which the film thickness increases from the lower side to the upper side of the windshield with the windshield 10 attached to the vehicle.
  • FIG. 3 is an enlarged front view showing the upper central portion (A portion) of the windshield 10 shown in FIG. 1.
  • a pair of bus bars 22 and 24, a part of the conductor 26 shown by a thick line, and a rectangular adhesive region 27A, 27B, 27C, 27D, 27E, 27F shown in a mesh shape or by hatching are provided. It is shown superimposed on the shielding layer 18.
  • the bus bars 22, 24, the conductor 26, and the adhesive regions 27A to 27F will be described later. Different adhesives may be used for these bonded areas.
  • a main adhesive (a known adhesive such as an acrylic resin, a urethane resin, or an epoxy resin) is used for the adhesive regions 27A, 27C, 27D, and 27E hatched, and the adhesive regions 27B shown in a mesh shape are used.
  • temporary holding is performed using double-sided tape (or hot melt adhesive) for temporary holding so that the parts can be held until the main adhesive is cured and the adhesive layer (thickness) of the main adhesive is secured. You may.
  • an in-vehicle camera 20 shown by a two-dot chain line in FIG. 3 is mounted inside the windshield 10 in the upper center portion of the windshield 10 that does not obstruct the view of the occupants of the automobile.
  • the information transmission / reception area 28 is provided in the area facing the vehicle-mounted camera 20.
  • the information transmission / reception region 28 is configured by opening a part of the shielding layer 18 in a trapezoidal shape, for example.
  • the vehicle-mounted camera 20 can capture the scenery in front of the vehicle via the transparent information transmission / reception area 28.
  • the vehicle-mounted camera 20 is an example of the information communication device of the present invention. That is, the information communication device can transmit and / or receive information via the windshield 10.
  • the information transmission / reception area 28 is configured so that the entire circumference thereof is surrounded by the shielding layer 18, but at least a part thereof may be surrounded by the shielding layer 18.
  • the visible light transmittance of the information transmission / reception region 28 is preferably 70% or more in order to acquire a good image by the vehicle-mounted camera 20.
  • FIG. 4 is an electric circuit diagram for supplying an electric current to the conductor 26.
  • the conductor 26 includes a heat generating portion 30 capable of heating the information transmission / reception region 28, a lead portion 32 connecting the first end 30A of the heat generating portion 30 and the bus bar 22 on the plus side, and a heat generating portion. It has a lead portion 34 for connecting the second end 30B of 30 and the bus bar 24 on the minus side.
  • the bus bars 22 and 24 function as the feeding unit of the present invention.
  • the conductor 26 is, for example, a conductive streak
  • the heat generating portion 30 is, for example, a heating streak.
  • the material constituting the conductor 26 when the conductor 26 is a conductive wire, it may be formed by firing a conductive silver paste containing silver powder and glass frit.
  • the components of the conductive silver paste are, for example, 60 to 90% of silver powder, 1 to 10% of glass powder, 5 to 30% of an inorganic additive, and an organic binder and an organic solvent added as solid content.
  • the average particle size of the silver powder contained in the silver paste is preferably 0.1 to 10 ⁇ m.
  • the thickness of the conductor 26 is preferably 5 to 20 ⁇ m.
  • the width of the conductive wire is preferably 0.1 mm or more and 0.5 mm or less, and more preferably 0.15 to 0.35 mm.
  • the lead portions 32 and 34 are lead wires as an example.
  • the bus bars 22, 24 and the conductor 26 are formed on the inner surface of the windshield 10. For example, it is formed on the inner surface of the glass plate 12 or the inner surface of the glass plate 14.
  • the heat generating portion 30 is arranged so as to cross the information transmission / reception area 28 in the horizontal direction by being folded back in the horizontal direction at a plurality of locations at intervals in the vertical direction.
  • the heat generation unit 30 has a function of heating the information transmission / reception region 28 as described above, but the lead units 32 and 34 are portions that supply a current to the heat generation unit 30 to heat the information transmission / reception region 28. This is the part that does not contribute.
  • the lead portions 32 and 34 can be formed by the same conductive silver paste as the heat generating portion 30.
  • bus bar 22 is connected to the positive terminal 38A of the battery 38 via the wiring 36
  • bus bar 24 is connected to the negative terminal 38B of the battery 38 via the wiring 40.
  • the battery 38 functions as a power source of the present invention.
  • the windshield 10 of the embodiment includes an in-vehicle camera 20 mounted inside the vehicle, a conductor 26, and wirings 36 and 40 connecting the conductor 26 and the battery 38.
  • the conductor 26 has a heat generating portion 30 that heats an information transmission / reception region 28 for the vehicle-mounted camera 20 to capture an image of the scenery outside the vehicle via the windshield 10.
  • the heat generating unit 30 when the current from the battery 38 is supplied to the heat generating unit 30 via the wirings 36, 40, etc., the heat generating unit 30 generates heat and is generated in the heat generating unit 30.
  • the heat warms the information transmission / reception region 28 of the windshield 10 and removes fogging or freezing on the surface of the information transmission / reception region 28.
  • the heat generating portion 30 secures a good image by the vehicle-mounted camera 20.
  • the windshield 10 of the embodiment is provided with an electric resistor 50 (see FIGS. 4 to 5 and 7 to 10) between the heat generating portion 30 and the battery 38.
  • the electric resistor 50 has a resistance value corresponding to the resistance value of the above-mentioned "extra long wire of the heat generating portion arranged outside the information transmission / reception region 28". That is, when adjusting the current flowing through the heat generating portion 30, the windshield 10 of the embodiment does not add an extra length line to the heat generating portion 30 arranged outside the information transmission / reception region 28 to adjust the current, but the above-mentioned windshield 10 does not adjust the current.
  • the electric resistor 50 By providing the electric resistor 50, the current flowing through the heat generating portion 30 is adjusted.
  • the extra length line of the heat generating portion 30 arranged outside the information transmission / reception area 28 can be shortened, so that the area increase of the shielding layer 18 due to the extra length line can be suppressed. Therefore, in the windshield 10 of the embodiment having the anti-fog function, good visibility of the occupants of the automobile can be ensured. Further, when the extra length wire arranged outside the information transmission / reception area 28 generates heat in the same manner as the heat generation unit 30, not only does it not contribute to the heating of the information transmission / reception area 28, but also the windshield 10 is unnecessarily locally applied. There is no risk of heating, or heating the information communication device itself such as the in-vehicle camera 20, or the bracket for fixing the information communication device to the windshield 10.
  • FIG. 4 is an electric circuit diagram showing a first example of an arrangement example of the electric resistor 50
  • FIG. 5 is a configuration diagram corresponding to the electric circuit diagram shown in FIG.
  • the wiring 36 has a first wiring 52 and a second wiring 54.
  • a terminal 56 electrically connected to the bus bar 22 is provided at the first end of the first wiring 52, and a first connector 58 is provided at the second end of the first wiring 52.
  • the first end of the second wiring 54 is provided with a connection portion 60 electrically connected to the battery 38, and the second end of the second wiring 54 is electrically connected to the first connector 58.
  • a second connector 62 is provided.
  • the electric resistor 50 is arranged in the first connector 58.
  • the current flowing through the heat generating portion 30 can be adjusted. Further, since the extra length line arranged in the heat generating portion 30 other than the information transmission / reception area 28 can be shortened, the area increase of the shielding layer 18 due to the extra length line can be suppressed. Further, since it is not necessary to connect the electric resistor 50 to the windshield 10, the current can be adjusted only by connecting the first connector 58 in which the electric resistor 50 is arranged and the second connector 62, so that the battery 38 can be used. This is preferable because the connection work of the above is easy. Therefore, by adopting the first example, it is possible to provide a windshield 10 capable of ensuring a good view of an automobile occupant.
  • FIG. 6 is a plan view of the first wiring 52.
  • the two first wirings 52 and 64 are bound by a binding band 66 so as to be combined with the first wiring 64 on the wiring 40 (see FIG. 4) side, and the harness 68 is used. It is connected to the.
  • the harness 68 is provided with a first connector 58 and a first connector 70 on the wiring 40 (see FIG. 4) side.
  • a terminal 72 electrically connected to the bus bar 24 (see FIG. 4) is provided at the first end of the first wiring 64.
  • the first wirings 52 and 64 shown in FIG. 6 are members connected to the windshield 10 side and handled integrally with the windshield 10.
  • the electric resistor 50 is the second as shown in a mesh shape in FIG. It may be arranged in the connector 62. That is, the electric resistor 50 may be arranged on at least one of the first connector 58 and the second connector 62.
  • reference numeral 74 is a second wiring on the wiring 40 side
  • reference numeral 76 is a second connector on the wiring 40 side.
  • FIG. 7 is a configuration diagram showing a second example of an arrangement example of the electric resistor 50.
  • the same or similar members as those of the first example shown in FIGS. 4 and 5 will be described with the same reference numerals.
  • the wiring 36 has a terminal 56 as a connector electrically connected to the bus bar 22 at the first end and a connection electrically connected to the battery 38 (see FIG. 4) at the second end. It has a unit 60 (see FIG. 4).
  • the electric resistor 50 is arranged at the terminal 56.
  • the electric resistor 50 by arranging the electric resistor 50 at the terminal 56, the current flowing through the heat generating portion 30 can be adjusted. Further, since the extra length line arranged in the heat generating portion 30 other than the information transmission / reception area 28 can be shortened, the area increase of the shielding layer 18 due to the extra length line can be suppressed. Further, since it is not necessary to connect the electric resistor 50 to the windshield 10, the current can be adjusted only by connecting the terminal 56 in which the electric resistor 50 is arranged to the bus bar 22, so that the connection work with the battery 38 is easy. Therefore, it is preferable. Therefore, by adopting the second example, it is possible to provide the windshield 10 capable of ensuring a good view of the occupants of the automobile.
  • FIG. 8 is a configuration diagram showing a third example of an arrangement example of the electric resistor 50.
  • the same or similar members as those of the first example shown in FIGS. 4 and 5 will be described with the same reference numerals.
  • the electric resistor 50 is arranged in the first wiring 52.
  • the electric resistor 50 is arranged in the first wiring 52, it is possible to provide the windshield 10 capable of ensuring a good view of the occupants of the automobile as in the first and second examples. The same applies even if the electric resistor 50 is arranged in the second wiring 54. Further, in the third example shown in FIG. 8, an example of adoption in the wiring 36 provided with the first wiring 52 and the second wiring 54 has been described, but the wiring 36 composed of one wiring can also be adopted.
  • FIG. 9 is an electric circuit diagram showing a fourth example of an arrangement example of the electric resistor 50
  • FIG. 10 is a configuration diagram corresponding to the electric circuit diagram shown in FIG.
  • an electric resistor 50 is arranged between the heat generating portion 30 and the bus bar 22. Specifically, an electric resistor 50 is arranged in a part of the lead portion 32. When the electric resistor 50 is arranged on the surface of the windshield 10, it is preferable that the lead portion 32 and the electric resistor 50 are connected by lead-free solder. When the electric resistor 50 is arranged on the surface of the windshield 10, the electric resistor 50 is covered with a silicone-based resin, an epoxy-based resin, a urethane-based resin, or the like so that moisture or the like does not come into contact with the electric resistor 50. It is preferable that it is broken.
  • the windshield 10 capable of ensuring a good view of the occupants of the automobile as in the first to third examples.
  • FIGS. 9 and 10 an example of adoption in the wiring 36 provided with the first wiring 52 and the second wiring 54 has been described, but even if the wiring 36 is composed of one wiring, it may be used. Can be adopted.
  • the electric resistor 50 may be arranged between the heat generating portion 30 and the battery 38.
  • the electric resistor 50 shown in the first to fourth examples may be a fixed resistor, a semi-fixed resistor, or a variable resistor.
  • a fixed resistor that does not fluctuate rather than a semi-fixed resistor or a variable resistor whose resistance value may fluctuate due to vibration of an automobile.
  • any fixed resistor such as a lead type, a surface mount type, and a cement resistor can be adopted.
  • the electric resistor 50 may be connected in parallel between the heat generating portion 30 and the battery 38.
  • the windshield 10 of the embodiment shown in FIGS. 3 and 4 is compared with the windshield provided with a heat generating portion having an extra length line.
  • FIG. 12 is an explanatory diagram of a main part of a windshield 80 provided with a heat generating portion 30 having an extra length line 82 arranged outside the information transmission / reception area 28.
  • FIG. 13 is an electric circuit diagram of the windshield 80 shown in FIG. In explaining the windshield 80 shown in FIGS. 12 and 13, the same or similar members as the windshield 10 of the embodiment shown in FIGS. 3 and 4 will be described with the same reference numerals.
  • the adhesive regions 27A to 27F shown in FIGS. 3 and 12 will be described.
  • the camera bracket 84 shown by the thin line in FIGS. 3 and 12 is connected to the windshield 10 (glass plate 14).
  • the adhesive region 27F is an region formed for adhering the mirror base 86 for the inner mirror shown by the thin lines in FIGS. 3 and 12 to the windshield 10 (glass plate 14).
  • the extra length wire 82 shown in FIG. 12 will be described with reference to the heat generating portion 30 of FIG. 3.
  • the extra length wire 82 is arranged so as to bypass the adhesive regions 27C, 27D, 27E and 27F, and generates heat. It is connected to the second end 30B of the portion 30 and the first end 34A of the lead portion 34. Therefore, as shown in FIGS. 12 and 13, the arrangement area 88 of the extra length line 82 with respect to the windshield 80 is inevitably widened, and when the arrangement area 88 is to be hidden by the shielding layer 18, the area of the shielding layer 18 is increased. There is a problem that the field of view of the occupants of the automobile is narrowed because the area becomes wider.
  • the windshield 10 of the embodiment shown in FIG. 3 has an electric resistor 50 (see FIGS. 4 to 10) having a resistance value corresponding to the resistance value of the extra length wire 82 as a heat generating portion. Since it is arranged between the 30 and the battery 38, it is possible to suppress an increase in the area of the shielding layer 18 due to the extra length line 82, and thus it is possible to provide a windshield 10 capable of ensuring a good view of an automobile occupant.
  • the conductor 26 shown in FIG. 3 is a conductive wire, and is formed by, for example, printing a conductive silver paste on a glass plate 12 or a glass plate 14.
  • the sheet-shaped heating elements 94 and 96 provided with a plurality of heat rays 92 in the sheet-shaped member 90. Can be adopted as the conductor 26.
  • the heat generating portion 30 can be used. The extra length line arranged outside the information transmission / reception area 28 can be shortened.
  • bus bars 98 and 100 are provided on both left and right sides of the sheet-shaped member 90, and a plurality of heat rays 92 connected to the bus bars 98 and 100 are vertically and vertically. They are arranged along the horizontal direction at intervals in the direction.
  • the heat ray 92 is made of copper, for example.
  • bus bars 102 and 104 are provided on both upper and lower sides of the sheet-shaped member 90 along the horizontal direction, and a plurality of bus bars 102 and 104 are connected to the bus bars 102 and 104.
  • the heat rays 92 are arranged along the vertical direction at intervals in the horizontal direction.
  • the plurality of heat rays 92 connected to the bus bars 102 and 104 may be thin wires patterned in a mesh shape.
  • the material for forming the heat ray 92 includes, for example, gold, silver, copper, platinum, aluminum, chromium, molybdenum, nickel, titanium, palladium, indium, and the like. Tungsten and one or more of these alloys are mentioned.
  • the bus bars 102 and 104 may be transparent conductive films.
  • the transparent conductive film include tin-doped indium oxide (ITO) films and tin oxide films.
  • the arrangement positions of the sheet-shaped heating elements 94 and 96 may be any surface other than the outer surface of the glass plate 12, for example, the car of the glass plate 12 as shown in the cross-sectional views of FIGS. 14B and 15B. It may be an inner surface, an outer surface of the glass plate 14, or an inner surface of the glass plate 14.
  • the present invention has been described above, the present invention is not limited to the above examples, and some improvements or modifications may be made without departing from the gist of the present invention.
  • the window glass for automobiles according to the present invention can be applied to window glass for railway vehicles other than automobiles or for ships.
  • the entire contents of the specification, claims, drawings and abstract of Japanese Patent Application No. 2020-096182 filed on June 2, 2020 are cited here as the disclosure of the specification of the present invention. , Incorporate.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Multimedia (AREA)
  • Surface Heating Bodies (AREA)
  • Joining Of Glass To Other Materials (AREA)
PCT/JP2021/020429 2020-06-02 2021-05-28 自動車用窓ガラス Ceased WO2021246326A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE112021001858.2T DE112021001858T5 (de) 2020-06-02 2021-05-28 Kraftfahrzeugfensterscheibe
JP2022528799A JP7635783B2 (ja) 2020-06-02 2021-05-28 自動車用窓ガラス
CN202180039806.XA CN115884903A (zh) 2020-06-02 2021-05-28 汽车用窗玻璃
US18/072,181 US20230093219A1 (en) 2020-06-02 2022-11-30 Automobile window glass

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020-096182 2020-06-02
JP2020096182 2020-06-02

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US18/072,181 Continuation US20230093219A1 (en) 2020-06-02 2022-11-30 Automobile window glass

Publications (1)

Publication Number Publication Date
WO2021246326A1 true WO2021246326A1 (ja) 2021-12-09

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JP (1) JP7635783B2 (https=)
CN (1) CN115884903A (https=)
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WO (1) WO2021246326A1 (https=)

Cited By (2)

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WO2023277007A1 (ja) * 2021-06-30 2023-01-05 日本板硝子株式会社 車両用ガラスモジュール
WO2023144546A1 (en) * 2022-01-26 2023-08-03 Pilkington Group Limited Sensor bracket glazing

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7428119B2 (ja) * 2020-12-10 2024-02-06 トヨタ自動車株式会社 防曇装置
CN118683296A (zh) * 2023-03-24 2024-09-24 本田技研工业株式会社 车辆
CN118683295A (zh) * 2023-03-24 2024-09-24 本田技研工业株式会社 车辆
GB2638690A (en) * 2024-02-27 2025-09-03 Jaguar Land Rover Ltd Vehicle windscreen heater

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JPH0789414A (ja) * 1993-09-27 1995-04-04 Asahi Glass Co Ltd 窓ガラスの加熱装置
CN202535567U (zh) * 2012-04-18 2012-11-14 德州市第二中学 一种带加热装置的平面镜
JP2014534104A (ja) * 2011-09-30 2014-12-18 ピーピージー・インダストリーズ・オハイオ・インコーポレイテッドＰＰＧ Ｉｎｄｕｓｔｒｉｅｓ Ｏｈｉｏ，Ｉｎｃ． 加熱可能な透明部材
JP2017114484A (ja) * 2015-12-22 2017-06-29 日本板硝子株式会社 ウインドシールド
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JP2019099405A (ja) * 2017-11-29 2019-06-24 日本板硝子株式会社 ウインドシールド

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PL3118036T3 (pl) * 2014-03-14 2020-06-01 Nippon Sheet Glass Company, Limited Przednia szyba
JP6633974B2 (ja) 2016-06-02 2020-01-22 日本板硝子株式会社 ウインドシールド
JP6922210B2 (ja) * 2016-12-20 2021-08-18 Ａｇｃ株式会社 車両用窓ガラス

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JPS568757Y2 (https=) * 1975-08-15 1981-02-25
JPH0789414A (ja) * 1993-09-27 1995-04-04 Asahi Glass Co Ltd 窓ガラスの加熱装置
JP2014534104A (ja) * 2011-09-30 2014-12-18 ピーピージー・インダストリーズ・オハイオ・インコーポレイテッドＰＰＧ Ｉｎｄｕｓｔｒｉｅｓ Ｏｈｉｏ，Ｉｎｃ． 加熱可能な透明部材
CN202535567U (zh) * 2012-04-18 2012-11-14 德州市第二中学 一种带加热装置的平面镜
JP2017114484A (ja) * 2015-12-22 2017-06-29 日本板硝子株式会社 ウインドシールド
JP2018118617A (ja) * 2017-01-25 2018-08-02 トヨタ自動車株式会社 車載カメラ用フロントガラス加熱装置
JP2019099405A (ja) * 2017-11-29 2019-06-24 日本板硝子株式会社 ウインドシールド

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WO2023277007A1 (ja) * 2021-06-30 2023-01-05 日本板硝子株式会社 車両用ガラスモジュール
WO2023144546A1 (en) * 2022-01-26 2023-08-03 Pilkington Group Limited Sensor bracket glazing

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CN115884903A (zh) 2023-03-31
JP7635783B2 (ja) 2025-02-26
US20230093219A1 (en) 2023-03-23
JPWO2021246326A1 (https=) 2021-12-09
DE112021001858T5 (de) 2023-01-05

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