Vehicle window glass and side door

Abstract

To provide a window glass for a vehicle capable of achieving both sound insulation and rigidity of a laminated glass.SOLUTION: A window glass 1 for a vehicle according to one aspect of the present disclosure includes a laminated glass 10 including a first glass plate 11, a second glass plate 12, and an intermediate film 13 sandwiched between the first glass plate 11 and the second glass plate 12, and a heating unit 30 provided on the laminated glass 10. In a plan view of the laminated glass 10, the laminated glass 10 has a central area 21 and a peripheral area 22 provided around the central area 21, and the heating means 30 is provided in the central area 21 of the laminated glass 10.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to vehicle glazing and side doors. [Background technology]

[0002] In recent years, laminated glass has been used as window glass for vehicles used in side doors in order to improve sound insulation inside vehicles. Patent Document 1 discloses a technique related to a side door using laminated glass. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 2023-517012 Summary of the Invention [Problem to be solved by the invention]

[0004] As described above, laminated glass is used as a vehicle window glass for a side door to improve sound insulation inside the vehicle. However, laminated glass has a problem in that its sound insulation decreases at low temperatures. For example, it seems possible to solve this problem by heating the laminated glass to a predetermined temperature or higher. However, when the laminated glass is heated, the elastic modulus of the interlayer film constituting the laminated glass decreases, and the rigidity of the laminated glass decreases. Furthermore, heating the edge portion of the laminated glass can cause the interlayer film to foam.

[0005] The present disclosure has been made in view of the above points, and has an object to provide a vehicle window glass and a side door that can achieve both sound insulation and rigidity of laminated glass. [Means for solving the problem]

[0006] A vehicle window glass according to one aspect of the present disclosure includes a laminated glass having a first glass sheet, a second glass sheet, and an interlayer film sandwiched between the first glass sheet and the second glass sheet, and a heating device provided in the laminated glass. When viewed in plan, the laminated glass has a central region and a peripheral region provided around the central region, and the heating device is provided in the central region of the laminated glass.

[0007] A side door according to one aspect of the present disclosure includes the vehicle window glass described above and a door panel to which the vehicle window glass is attached. [Effects of the Invention]

[0008] According to the present disclosure, it is possible to provide a vehicle window glass and a vehicle side door that can achieve both sound insulation and rigidity of laminated glass. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a plan view showing an example of the configuration of a vehicle window glass according to an embodiment; [Figure 2] FIG. 2 is a cross-sectional view taken along line II-II in FIG. [Figure 3] 1 is a plan view showing an example of the configuration of a vehicle window glass according to an embodiment; [Figure 4] 1 is a plan view showing an example of the configuration of a vehicle window glass according to an embodiment; [Figure 5] 1 is a plan view showing an example of the configuration of a vehicle window glass according to an embodiment; [Figure 6] 1 is a plan view showing an example of the configuration of a vehicle window glass according to an embodiment; [Figure 7] FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. 6. [Figure 8] 1 is a cross-sectional view showing an example of the configuration of a vehicle window glass according to an embodiment. [Figure 9] FIG. 2 is a plan view showing an example of the configuration of a side door. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment will be described with reference to the drawings. Fig. 1 is a plan view showing an example of the configuration of a vehicle window glass according to an embodiment, as viewed from the vehicle interior side, Fig. 2 is a cross-sectional view taken along line II-II in Fig. 1.

[0011] As shown in Fig. 1, a vehicle window glass 1 according to this embodiment is provided with holders 60_1 and 60_2 that hold the vehicle window glass 1 on the underside of the vehicle window glass 1. In this embodiment, the vehicle window glass 1 is held by the holders 60_1 and 60_2, and these holders 60_1 and 60_2 are fixed to a lifting device (not shown). The vehicle window glass 1 moves up and down by the driving force of the lifting device (not shown).

[0012] As shown in Fig. 1, a vehicle window glass 1 according to this embodiment includes laminated glass 10 and heating means 30. As shown in Fig. 2, the laminated glass 10 includes a first glass sheet 11 that is disposed on the exterior side of the vehicle when the vehicle window glass 1 is installed in the vehicle, a second glass sheet 12 that is disposed on the interior side of the vehicle, and an interlayer film 13 that is sandwiched between the first glass sheet 11 and the second glass sheet 12. The first glass sheet 11 and the second glass sheet 12 are bonded to each other using the interlayer film 13. Use of the laminated glass 10 improves the sound insulation of the vehicle window glass 1.

[0013] The thickness of the laminated glass 10 is preferably 2.8 mm to 10 mm, and more preferably 3.0 mm to 8.0 mm. When the thickness of the laminated glass 10 is 2.8 mm to 10 mm, the laminated glass 10 can have sufficient transmittance and strength.

[0014] The first glass plate 11 and the second glass plate 12 are made of inorganic glass. Examples of inorganic glass include soda lime glass and aluminosilicate glass. The inorganic glass may be either untempered glass or tempered glass. Untempered glass is made by forming molten glass into a plate shape and slowly cooling it. Tempered glass is made by forming a compressive stress layer on the surface of untempered glass. Tempered glass may be either physically tempered glass (for example, air-cooled tempered glass) or chemically tempered glass.

[0015] Although not shown, the first glass sheet 11 and the second glass sheet 12 may be formed so as to convexly face the exterior of the vehicle. Gravity forming, press forming, or the like is used to bend the glass sheet. The glass surface may be physically strengthened by rapidly cooling the uniformly heated glass sheet from a temperature near its softening point during bending, thereby generating compressive stress on the glass surface due to the temperature difference between the glass surface and the interior of the glass. After bending, the glass surface may be chemically strengthened by generating compressive stress on the glass surface using an ion exchange method or the like.

[0016] The thickness of the first glass plate 11 is preferably 1.1 mm to 5.0 mm, more preferably 1.1 mm to 4.2 mm, and even more preferably 1.1 mm to 3.6 mm, and may be 1.8 mm to 3.0 mm. When the thickness of the first glass plate 11 is 1.1 mm to 4.2 mm, the weight of the vehicle window glass can be reduced and sufficient strength can be ensured. Furthermore, the thickness of the second glass plate 12 is preferably 0.5 mm to 2.7 mm, more preferably 0.5 mm to 2.3 mm, and may be 0.5 mm to 1.8 mm. When the thickness of the second glass plate 12 is 0.5 mm to 2.7 mm, the weight of the vehicle window glass can be reduced and the second glass plate 12 can be easily handled.

[0017] The interlayer film 13 may be made of, for example, polyvinyl butyral (PVB) or ethylene-vinyl acetate copolymer (EVA). The interlayer film 13 may have either a single-layer structure or a multi-layer structure. The thickness of the interlayer film 13 is preferably 0.5 mm to 3.0 mm, and more preferably 0.5 mm to 2.8 mm. When the thickness of the interlayer film 13 is 0.5 mm to 3.0 mm, the vehicle window glass can be made lighter and sufficient impact resistance can be ensured. In this embodiment, the interlayer film 13 is preferably an interlayer film having sound insulation properties. Examples of interlayer films having sound insulation properties that can be used include S-LEC Sound Acoustic Film manufactured by Sekisui Chemical Co., Ltd. and Saflex Q series manufactured by Eastman. The interlayer film 13 may also include a heat-generating device, an antenna, a liquid crystal device, a light control device, an image projection layer, a light-emitting layer, a photovoltaic layer, a heat-reflecting layer, etc.

[0018] As shown in Fig. 1, when viewed from above, the laminated glass 10 has a central region 21 and a peripheral region 22 provided around the central region 21. The central region 21 corresponds to the position of a person's ears when they are in the vehicle. The peripheral region 22 is an area that is arranged to surround the central region 21 and is an area on the edge side of the laminated glass 10.

[0019] In this embodiment, a heating means 30 is provided in the central region 21 of the laminated glass 10. The heating means 30 may be any member capable of heating the central region 21. The heating means 30 may be formed, for example, of a conductive film or a conductive wire. As shown in FIG. 2 , the heating means 30 may be provided on the main surface of the second glass sheet 12 located on the vehicle interior side, facing the interlayer film 13. Alternatively, the heating means 30 may be provided on the main surface of the first glass sheet 11 located on the vehicle exterior side, facing the interlayer film 13. That is, in this embodiment, the heating means 30 is preferably provided between the first glass sheet 11 and the second glass sheet 12. Note that in this embodiment, the central region 21 may be heated by blowing warm air onto it. In this case, the heating means is a blower that blows warm air.

[0020] As described above, the vehicle window glass 1 according to this embodiment has the heating means 30 provided in the central region 21 of the laminated glass 10. Therefore, it is possible to provide a vehicle window glass that can achieve both sound insulation and rigidity for the laminated glass 10.

[0021] That is, laminated glass has the property that its sound insulation decreases at low temperatures. In this embodiment, heating means 30 is provided to heat the laminated glass 10 so that the temperature of the central region 21 of the laminated glass 10 is maintained at a predetermined temperature or higher. Therefore, even when the temperature outside the vehicle is low, the temperature of the central region 21 of the laminated glass 10 can be maintained at a predetermined temperature or higher, thereby suppressing a decrease in the sound insulation of the laminated glass 10. In particular, the central region 21 of the laminated glass 10 corresponds to the position of a person's ears when they are in the vehicle. Therefore, by providing heating means 30 in the central region 21 to heat the laminated glass 10, a decrease in the sound insulation of the laminated glass 10 can be effectively suppressed.

[0022] Furthermore, when laminated glass is heated, the modulus of elasticity of the interlayer film constituting the laminated glass decreases, which can lead to a decrease in the rigidity of the laminated glass. Furthermore, heating the vicinity of the edge of the laminated glass can cause bubbles to form. In this embodiment, the heating means 30 is provided in the central region 21, which is on the inner surface of the peripheral region 22 of the laminated glass 10. This prevents the peripheral region 22 from being heated, thereby preventing a decrease in the modulus of elasticity of the interlayer film 13 in the peripheral region 22 and ultimately a decrease in the rigidity of the laminated glass 10. Furthermore, preventing the peripheral region 22 from being heated also prevents the formation of bubbles near the edge of the laminated glass 10. The rigidity of the laminated glass 10 is particularly affected by the rigidity of the peripheral region 22. In this embodiment, the decrease in rigidity of the peripheral region 22 of the laminated glass 10 is prevented, thereby effectively preventing a decrease in the rigidity of the laminated glass 10.

[0023] In this embodiment, when viewed from above, the width w (see FIG. 1) of the peripheral region 22 of the laminated glass 10 is preferably 10 mm to 300 mm, more preferably 40 mm to 250 mm, even more preferably 70 mm to 200 mm, and particularly preferably 100 mm to 150 mm. By setting the width w of the peripheral region 22 of the laminated glass 10 within this range, it is possible to effectively prevent a decrease in the sound insulation and rigidity of the laminated glass.

[0024] In this embodiment, a heat-reflecting film (not shown) may be formed in the peripheral region 22 of the laminated glass 10. In this case, from the viewpoint of weather resistance, the heat-reflecting film is preferably formed on the main surface of the first glass sheet 11, which is disposed on the vehicle exterior, on the side of the interlayer film 13. Forming a heat-reflecting film in this manner can prevent the interlayer film 13 from being heated by sunlight and thereby reducing its rigidity. The heat-reflecting film can be made of a metal film or a metal oxide film, such as silver, a silver alloy, ITO (indium tin oxide), ATO (antimony tin oxide), SnO2, or ZnO.

[0025] In this embodiment, a light control means (not shown) may be enclosed between the first glass plate 11 and the second glass plate 12 of the laminated glass 10. A light control film can be used as the light control means. The light control film has a light control function in which the transmittance state changes depending on the applied voltage. For example, a suspended particle device (SPD), a polymer dispersed liquid crystal (PDLC), a polymer network liquid crystal (PNLC), a guest-host liquid crystal (GHLC), etc. can be used as the light control film.

[0026] For example, the light control means may be provided in the central region 21 of the laminated glass 10. Alternatively, the light control means may be provided in both the central region 21 and the peripheral region 22 of the laminated glass 10. When the laminated glass 10 is heated using the heating means 30, optical distortion may occur in the laminated glass 10 due to the heat. In this embodiment, by providing the laminated glass 10 with a light control means, such optical distortion can be made less noticeable using the light control means.

[0027] In this embodiment, the thickness of the first glass sheet 11 may be greater than the thickness of the second glass sheet 12. By making the thickness of the first glass sheet 11 arranged on the vehicle exterior side greater than the thickness of the second glass sheet 12 arranged on the vehicle interior side in this manner, the strength of the vehicle window glass is improved. The second glass sheet 12 may be chemically strengthened glass.

[0028] Next, specific examples of the heating means 30 provided in the vehicle window glass 1 according to this embodiment will be described with reference to FIGS.

[0029] In this embodiment, as in the vehicle window glass 1a shown in Fig. 3, the heating means 30a includes a conductive film 31, a first bus bar 41_1, and a second bus bar 41_2. The conductive film 31 is formed on the main surface of the second glass sheet 12 arranged on the vehicle interior side, on the intermediate film 13 side (see Fig. 2). Note that the conductive film 31 may also be provided on the main surface of the first glass sheet 11 arranged on the vehicle exterior side, on the intermediate film 13 side.

[0030] The first bus bar 41_1 and the second bus bar 41_2 are connected to the conductive film 31, and when a power supply voltage is applied to the first bus bar 41_1 and the second bus bar 41_2, the conductive film 31 heats the laminated glass 10. The first bus bar 41_1 and the second bus bar 41_2 have opposite polarities. That is, when the first bus bar 41_1 is positive, the second bus bar 41_2 is negative. Conversely, when the first bus bar 41_1 is negative, the second bus bar 41_2 is positive. Note that either a DC voltage or an AC voltage may be applied to the first bus bar 41_1 and the second bus bar 41_2 as the power supply voltage.

[0031] As shown in FIG. 3 , the first bus bar 41_1 is formed to extend from the front side to the rear side of the vehicle. The first bus bar 41_1 is formed obliquely so as to be approximately parallel to the upper edge of the vehicle window glass 1a. The second bus bar 41_2 is formed to be spaced a predetermined distance below the first bus bar 41_1 and to extend from the front side to the rear side of the vehicle. The conductive film 31 is formed between the first bus bar 41_1 and the second bus bar 41_2. The first bus bar 41_1 and the second bus bar 41_2 are electrically connected to the conductive film 31, and when a power supply voltage is applied to the first bus bar 41_1 and the second bus bar 41_2, the conductive film 31 heats the laminated glass 10.

[0032] In this embodiment, as shown in Fig. 3, when the vehicle window glass 1a is seen in a plan view, the second bus bar 41_2 is preferably arranged so that it is positioned lower than the position of the belt molding 50 of the door panel 80 (see Fig. 9) to which the vehicle window glass 1a is attached. By arranging the second bus bar 41_2 in this manner, the second bus bar 41_2 can be made less noticeable when the vehicle window glass 1a is attached to the door panel 80. Note that in Figs. 3 to 6, the position corresponding to the belt molding 50 is indicated by a dashed line.

[0033] For example, a transparent conductive film can be used as the conductive film 31. The conductive film 31 can be made of a metal material such as silver, gold, or palladium. In particular, in this embodiment, it is preferable to form the conductive film 31 using a conductive film containing silver as a main component. When a metal material is used as the conductive film 31, after the conductive film 31 is formed on the second glass plate 12, the second glass plate 12 can be heated to perform bending or thermal strengthening treatment.

[0034] In this embodiment, a conductive oxide film may be used as the conductive film 31. Examples of the conductive oxide film that can be used include an ITO (Indium Tin Oxide) film and a tin oxide film. The film resistance of the conductive film 31 is preferably 0.5 to 100 Ω / □, more preferably 0.5 to 50 Ω / □, even more preferably 0.5 to 30 Ω / □, and particularly preferably 0.5 to 10 Ω / □.

[0035] Methods for forming the conductive film 31 on the second glass plate 12 include vacuum deposition, sputtering, electron beam thermal evaporation, spraying, and CVD. The thickness of the conductive film 31 is, for example, about 20 to 500 nm. By making the thickness of the conductive film 31 within this range, the visible light transmittance of the conductive film 31 can be increased, making it easier to see the outside of the vehicle from inside the vehicle.

[0036] The first bus bar 41_1 and the second bus bar 41_2 may be made of a material such as silver, copper, or aluminum. The first bus bar 41_1 and the second bus bar 41_2 are formed on the conductive film 31 by, for example, printing and baking a silver paste. The thickness of the first bus bar 41_1 and the second bus bar 41_2 is, for example, about 0.5 μm to 30 μm.

[0037] The materials used for the conductive film 31, the first bus bar 41_1 and the second bus bar 41_2 described above are merely examples, and in this embodiment, materials other than the above-described materials may be used.

[0038] Next, a vehicle window glass 1b shown in FIG. 4 will be described. In the vehicle window glass 1b shown in FIG. 4, the heating means 30b includes a conductive film 32, a first bus bar 42_1, and a second bus bar 42_2. The conductive film 32 is continuously formed so as to travel back and forth between the upper and lower sides of the vehicle multiple times. In other words, the conductive film 32 is formed so as to have a meandering shape between the upper and lower sides of the vehicle. For example, the conductive film 32 may be formed on the main surface of the second glass plate 12 facing the intermediate film 13, and then a laser beam may be irradiated to remove part of the conductive film 32, thereby forming the meandering conductive film 32. The conductive film 32 may also be formed on the main surface of the first glass plate 11 facing the intermediate film 13.

[0039] One end of the conductive film 32 is connected to the first bus bar 42_1, and the other end of the conductive film 32 is connected to the second bus bar 42_2. The conductive film 32 is continuously formed between the first bus bar 42_1 and the second bus bar 42_2. Therefore, when a power supply voltage is applied to the first bus bar 42_1 and the second bus bar 42_2, the conductive film 32 heats the laminated glass 10. When the conductive film 32 is configured in this manner, the central region 21 of the laminated glass 10 can be heated evenly.

[0040] In the present embodiment, as shown in Fig. 4, when the vehicle window glass 1b is viewed from above, the first bus bar 42_1 and the second bus bar 42_2 are preferably arranged so that they are positioned below the position of the belt molding 50 of the door panel 80 (see Fig. 9) to which the vehicle window glass 1b is attached. By arranging the first bus bar 42_1 and the second bus bar 42_2 in this manner, the first bus bar 42_1 and the second bus bar 42_2 can be made less noticeable when the vehicle window glass 1b is attached to the door panel 80. The conductive film 32, the first bus bar 42_1, and the second bus bar 42_2 can be made of the same materials as those described above.

[0041] Next, a vehicle window glass 1c shown in FIG. 5 will be described. In the vehicle window glass 1c shown in FIG. 5, the heating means 30c includes a conductive film 33, a first bus bar 43_1, and a second bus bar 43_2. The conductive film 33 is continuously formed so as to travel back and forth between the front and rear sides of the vehicle multiple times. In other words, the conductive film 33 is formed so as to have a meandering shape between the front and rear sides of the vehicle. For example, the conductive film 33 may be formed on the main surface of the second glass plate 12 facing the intermediate film 13, and then a laser beam may be irradiated to remove part of the conductive film 33, thereby forming the meandering conductive film 33. The conductive film 33 may also be formed on the main surface of the first glass plate 11 facing the intermediate film 13.

[0042] One end of the conductive film 33 is connected to the first bus bar 43_1, and the other end of the conductive film 33 is connected to the second bus bar 43_2. The conductive film 33 is continuously formed between the first bus bar 43_1 and the second bus bar 43_2. Therefore, when a power supply voltage is applied to the first bus bar 43_1 and the second bus bar 43_2, the conductive film 33 heats the laminated glass 10. When the conductive film 33 is configured in this manner, the central region 21 of the laminated glass 10 can be heated evenly.

[0043] In the present embodiment, as shown in Fig. 5, when the vehicle window glass 1c is viewed from above, the first bus bar 43_1 and the second bus bar 43_2 are preferably arranged so that they are positioned below the position of the belt molding 50 of the door panel 80 (see Fig. 9) to which the vehicle window glass 1c is attached. By arranging the first bus bar 43_1 and the second bus bar 43_2 in this manner, the first bus bar 43_1 and the second bus bar 43_2 can be made less noticeable when the vehicle window glass 1c is attached to the door panel 80. The conductive film 33, the first bus bar 43_1, and the second bus bar 43_2 can be made of the same materials as those described above.

[0044] Fig. 6 is a plan view showing an example of the configuration of a vehicle window glass according to an embodiment. Fig. 7 is a cross-sectional view taken along line VII-VII in Fig. 6. A vehicle window glass 1d shown in Figs. 6 and 7 includes a conductive wire 34, a first bus bar 44_1, and a second bus bar 44_2 as heating means 30d. The conductive wire 34 is continuously arranged so as to travel back and forth between the upper and lower sides of the vehicle multiple times. In other words, the conductive wire 34 is arranged so as to form a meandering shape between the upper and lower sides of the vehicle.

[0045] One end of the conductive wire 34 is connected to the first bus bar 44_1, and the other end of the conductive wire 34 is connected to the second bus bar 44_2. When a power supply voltage is applied to the first bus bar 44_1 and the second bus bar 44_2, the conductive wire 34 heats up. By arranging the conductive wire 34 in this manner, the central region 21 of the laminated glass 10 can be heated evenly.

[0046] The conductive wire 34 is a resistance heating wire, and may be made of, for example, gold, silver, copper, platinum, aluminum, chromium, molybdenum, nickel, titanium, palladium, indium, tungsten, alloys thereof, etc. Among these, from the viewpoints of resistance value and strength, a material containing at least one selected from tungsten, copper, and silver is preferred.

[0047] 7, the conductive wire 34 is enclosed between the first glass sheet 11 and the second glass sheet 12 of the laminated glass 10. The line width of the conductive wire 34 is preferably 100 μm or less, more preferably 50 μm or less, even more preferably 30 μm or less, still more preferably 20 μm or less, and particularly preferably 10 μm or less. By setting the line width of the conductive wire 34 within this range, the conductive wire 34 can be made inconspicuous.

[0048] For example, when forming the laminated glass 10, the first glass sheet 11, the interlayer film 13_1, the conductive wire 34, the interlayer film 13_2, and the second glass sheet 12 are laminated in this order, and then heated and compressed to form the laminated glass 10 in which the conductive wire 34 is embedded. Note that the conductive wire 34 may be embedded between the first glass sheet 11 and the interlayer film 13_1, or between the second glass sheet 12 and the interlayer film 13_1.

[0049] In the present embodiment, as shown in Fig. 6, when the vehicle window glass 1d is viewed from above, it is preferable that the first bus bar 44_1 and the second bus bar 44_2 are arranged so that they are positioned lower than the position of the belt molding 50 of the door panel 80 (see Fig. 9) to which the vehicle window glass 1d is attached. By arranging the first bus bar 44_1 and the second bus bar 44_2 in this manner, the first bus bar 44_1 and the second bus bar 44_2 can be made less noticeable when the vehicle window glass 1d is attached to the door panel 80.

[0050] In this embodiment, the heating means 30e may be configured to be enclosed in the interlayer 13, as in a vehicle window glass 1e shown in Fig. 8. That is, in the configuration example shown in Fig. 8, the heating means 30e is sandwiched between an interlayer 13_1 arranged on the vehicle exterior side and an interlayer 13_2 arranged on the vehicle interior side.

[0051] The heating means 30e can be configured using, for example, a conductive film 35 in which a conductive film (transparent conductive film) is formed on a resin film. In this case, the above-mentioned materials can be used for the conductive film. Also, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), or polymethyl methacrylate (PMMA) can be used for the resin film. The thickness of the conductive film 35 is preferably, for example, 25 to 200 μm, and more preferably 50 to 100 μm.

[0052] For example, when forming the laminated glass 10, the first glass plate 11, the intermediate film 13_1, the conductive film 35, the intermediate film 13_2, and the second glass plate 12 are laminated in this order, and then heated and compressed to form the laminated glass 10 in which the conductive film 35 is enclosed.

[0053] FIG. 9 is a plan view showing an example of the configuration of a side door, and shows an example in which a side door is configured using the vehicle window glass 1 shown in FIG. 9. Note that FIG. 9 shows an example of the configuration of a sashless door. As shown in FIG. 9, the side door 100 according to this embodiment includes the vehicle window glass 1 described above and a door panel 80 to which the vehicle window glass 1 is attached. A belt molding 50 is provided on the upper side of the door panel 80. The belt molding 50 holds the vehicle window glass 1 in a state in which the vehicle window glass 1 can move up and down.

[0054] As shown in FIG. 1, holders 60_1 and 60_2 for holding the vehicle window glass 1 are attached to the underside of the vehicle window glass 1. The vehicle window glass 1 is held by the holders 60_1 and 60_2, and these holders 60_1 and 60_2 are fixed to an elevator device (not shown) provided inside the door panel 80. The vehicle window glass 1 moves up and down by the driving force of the elevator device (not shown). Note that while FIG. 9 illustrates a right front side door as an example of a side door, side doors at other positions can also be configured in the same way. Side doors can also be configured in the same way for the vehicle window glasses 1a to 1e.

[0055] Although the structural examples of the vehicle window glass according to the present embodiment have been described above, the structural examples may be combined with each other.

[0056] The present invention has been described above in accordance with the above-mentioned embodiment, but the present invention is not limited to the configuration of the above-mentioned embodiment, and naturally includes various modifications, alterations, and combinations that can be made by a person skilled in the art within the scope of the invention claimed in the claims of this application. [Explanation of symbols]

[0057] 1, 1a to 1e Vehicle window glass 10. Laminated glass 11 First glass plate 12 Second glass plate 13, 13_1, 13_2 Interlayer 21 Central area 22 Surrounding Areas 30, 30a~30e Heating means 31, 32, 33 Conductive film 34 Conductive wire 35 Conductive film 41_1~44_1 1st bus bar 41_2~44_2 2nd bus bar 50 Belt Mall 60_1, 60_2 holder 80 Door Panel 100 Side Door

Claims

1. a laminated glass including a first glass plate, a second glass plate, and an interlayer film sandwiched between the first glass plate and the second glass plate; a heating means provided in the laminated glass, When the laminated glass is viewed in plan, the laminated glass has a central region and a peripheral region provided around the central region, The heating means is provided in the central region of the laminated glass. Vehicle window glass.

2. The heating means is a conductive film formed on the first glass plate or the second glass plate; a first bus bar and a second bus bar connected to the conductive film, a power supply voltage is applied to the first bus bar and the second bus bar, whereby the conductive film heats the laminated glass; The vehicle window glass according to claim 1.

3. the first bus bar is formed to extend from the front side to the rear side of the vehicle, the second bus bar is spaced a predetermined distance below the first bus bar and is formed to extend from the front side to the rear side of the vehicle, the conductive film is formed between the first bus bar and the second bus bar. The vehicle window glass according to claim 2.

4. The conductive film is continuously formed so as to travel back and forth between the upper and lower sides of the vehicle multiple times, one end of the conductive film is connected to the first bus bar, The other end of the conductive film is connected to the second bus bar. The vehicle window glass according to claim 2.

5. the conductive film is continuously formed so as to travel back and forth between the front side and the rear side of the vehicle multiple times, one end of the conductive film is connected to the first bus bar, The other end of the conductive film is connected to the second bus bar. The vehicle window glass according to claim 2.

6. The heating means is a conductive wire enclosed between the first glass sheet and the second glass sheet of the laminated glass; a first bus bar connected to one end of the conductive wire; a second bus bar connected to the other end of the conductive wire, a power supply voltage is applied to the first bus bar and the second bus bar, whereby the conductive wire heats the laminated glass; The vehicle window glass according to claim 1.

7. 7. The vehicle window glass according to claim 6, wherein the conductive wire has a line width of 100 μm or less.

8. 8. The vehicle window glass according to claim 4, wherein, in a plan view of the vehicle window glass, the first bus bar and the second bus bar are arranged below a position of a belt molding of a door panel to which the vehicle window glass is attached.

9. The vehicle window glass according to any one of claims 1 to 7, wherein a heat reflecting film is formed in the peripheral region of the laminated glass.

10. The vehicle window glass according to any one of claims 1 to 7, wherein a light control means is enclosed between the first glass plate and the second glass plate of the laminated glass.

11. The vehicle window glass according to any one of claims 1 to 7, wherein the interlayer film included in the laminated glass is an interlayer film having sound insulation properties.

12. When the vehicle window glass is installed in a vehicle, the first glass sheet is disposed on the vehicle exterior side and the second glass sheet is disposed on the vehicle interior side, the conductive film is formed on a main surface of the second glass plate on the interlayer film side; The vehicle window glass according to any one of claims 2 to 5.

13. When the vehicle window glass is installed in a vehicle, the first glass sheet is disposed on the vehicle exterior side and the second glass sheet is disposed on the vehicle interior side, The vehicle window glass according to any one of claims 1 to 7, wherein the first glass plate has a thickness greater than a thickness of the second glass plate.

14. The vehicle window glass according to any one of claims 1 to 7, wherein, when the laminated glass is viewed in plan, the width of the peripheral region of the laminated glass is 10 mm or more and 300 mm or less.

15. A vehicle window glass according to any one of claims 1 to 7; a door panel to which the vehicle window glass is attached; Side door.

Images