Vehicle window glass and vehicle

Abstract

The invention provides vehicle window glass and a vehicle. The vehicle window glass comprises laminated glass, a transparent conductive layer and a transparent heat conduction film, the laminated glass comprises an outer glass plate, a middle layer and an inner glass plate, the outer glass plate comprises a first surface and a second surface, the inner glass plate comprises a third surface and a fourth surface, the middle layer is clamped between the outer glass plate and the inner glass plate, and the second surface faces the middle layer; the third surface faces the middle layer; the transparent conductive layer is arranged on the second surface, the third surface or the fourth surface, the window glass is provided with an information acquisition area, and at least part of the transparent conductive layer in the information acquisition area is removed; at least one of the first surface, the second surface, the third surface or the fourth surface is provided with a transparent heat-conducting film, and the projection of the transparent heat-conducting film in the thickness direction of the window glass covers the information acquisition area and is overlapped with the projection of the transparent conductive layer. The hot spots around the information acquisition area can be reduced, and the safety performance of the vehicle is improved.

Description

Technical Field

[0001] The present application relates to the technical field of glass products, in particular to vehicle window glass and vehicles. Background Art

[0002] At present, in order to avoid the large temperature difference between the indoor and outdoor of the vehicle, which causes the formation of water mist or frost on the window glass, a transparent conductive layer is usually set on the window glass. By energizing the transparent conductive layer to heat the transparent conductive layer, the purpose of defogging or defrosting the window glass is achieved. In addition, an information collection device is generally installed inside the vehicle to assist the automatic driving mode of the vehicle. The information collection device is usually installed on the inner side of the window glass. The window glass is provided with an information collection area for allowing the signal of the information collection device to pass through. In the prior art, in order to avoid the transparent conductive layer from interfering with or shielding the signal of the information collection device, the transparent conductive layer of the information collection area is usually removed. However, this will cause a large amount of current to gather around the information collection area when the transparent conductive layer is heated, thereby generating hot spots around the information collection area, making the temperature around the information collection area too high, and in severe cases, it can even cause the window glass to break, thereby reducing the safety performance of the vehicle. Summary of the invention

[0003] The purpose of the present application is to provide a vehicle window glass and a vehicle, which can reduce the hot spots around the information collection area while increasing the central temperature of the confidence collection area, thereby improving the safety performance of the vehicle.

[0004] A first aspect of the present application provides a vehicle window glass, comprising a laminated glass, a transparent conductive layer and a transparent thermal conductive film, wherein the laminated glass comprises an outer glass plate, an intermediate layer and an inner glass plate, wherein the outer glass plate comprises a first surface and a second surface disposed opposite to the first surface, wherein the inner glass plate comprises a third surface and a fourth surface disposed opposite to the third surface, wherein the intermediate layer is sandwiched between the outer glass plate and the inner glass plate, wherein the second surface faces the intermediate layer, and the third surface faces the intermediate layer;

[0005] The transparent conductive layer is provided on the second surface, the third surface or the fourth surface, the window glass is provided with an information collection area, and the transparent conductive layer in the information collection area is at least partially removed;

[0006] At least one of the first surface, the second surface, the third surface or the fourth surface is provided with the transparent heat-conductive film, and the projection of the transparent heat-conductive film along the thickness direction of the window glass covers the information collection area and overlaps with the projection of the transparent conductive layer.

[0007] It is understandable that by at least partially removing the transparent conductive layer in the information collection area, the interference or shielding of the transparent conductive layer on the signal received / transmitted by the information collection device can be reduced. By setting a transparent thermal conductive film in the information collection area of ​​the vehicle window glass, the transparent thermal conductive film can improve the thermal conductivity of the information collection area, thereby accelerating the speed of heat transfer from the periphery of the information collection area to the information collection area; and the projection of the transparent thermal conductive film along the thickness direction of the vehicle window glass overlaps with the projection of the transparent conductive layer, and the heat generated by the transparent conductive layer after being energized can be transferred to the transparent thermal conductive film, and then transferred to the information collection area by the transparent thermal conductive film, thereby reducing or even eliminating the hot spots generated around the information collection area after the transparent conductive layer is energized, and avoiding the window glass from breaking due to large local heat. In addition, it can also heat the information collection area, which is beneficial to the defog, defrost or de-icing of the information collection area.

[0008] In a possible implementation manner, the transparent thermally conductive film is in direct contact with the transparent conductive layer;

[0009] And / or, a projection of the transparent heat-conductive film along the thickness direction of the vehicle window glass overlaps with a projection of the transparent conductive layer outside the information collection area.

[0010] In a possible implementation manner, the number of the transparent thermally conductive films is two;

[0011] One of the transparent heat-conductive films is disposed on the second surface, and another of the transparent heat-conductive films is disposed on the third surface;

[0012] Alternatively, one of the transparent heat-conductive films is disposed on the second surface, and another of the transparent heat-conductive films is disposed on the fourth surface;

[0013] Alternatively, one of the transparent heat-conductive films is disposed on the third surface, and the other transparent heat-conductive film is disposed on the fourth surface.

[0014] In a possible implementation manner, the resistivity of the transparent thermally conductive film is ρ≥1000Ω·m, or ρ≥10000Ω·m, or ρ≥100000Ω·m.

[0015] In a possible implementation, the thermal conductivity of the transparent thermally conductive film is λ≥1.5 W / (m·K), or λ≥2 W / (m·K), or λ≥5 W / (m·K), or λ≥10 W / (m·K).

[0016] In a possible implementation manner, the thermal conductivity of the transparent thermally conductive film is λ≥15 W / (m·K), or λ≥20 W / (m·K), or λ≥30 W / (m·K).

[0017] In one possible embodiment, the vehicle window glass is provided with a film removal window, the transparent conductive layer in the film removal window is removed by at least 95%, the area of ​​the film removal window is greater than or equal to the area of ​​the information collection area, the outline of the film removal window is 0 to 10 mm larger than the outline of the information collection area, or the outline of the film removal window is 1 mm to 5 mm larger than the outline of the information collection area.

[0018] In a possible implementation, the thermal conductivity of the outer glass plate and / or the inner glass plate is 0.7 W / (m·K) to 1.3 W / (m·K), or the thermal conductivity of the outer glass plate and / or the inner glass plate is 0.9 W / (m·K) to 1.1 W / (m·K).

[0019] In a possible implementation manner, the information collection area covered with the transparent heat-conductive film has a transmittance TL of at least 60% for visible light with a wavelength of 440nm to 700nm incident at an incident angle of 65°. (440-700) ;

[0020] And / or, the transmittance TL of the information collection area covered with the transparent heat-conductive film to red light with a wavelength of 600nm to 700nm incident at an incident angle of 65° is (600-700) The transmittance TL of the information collection area covered with the transparent thermal conductive film to the visible light with a wavelength of 440nm to 700nm incident at an incident angle of 65° (440-700) The ratio between them is greater than or equal to 0.8;

[0021] And / or, the ratio between the transmittance Tp of the information collection area covered with the transparent heat-conductive film to P-polarized light with a wavelength of 440nm to 700nm incident at an incident angle of 65° and the transmittance Ts of the information collection area covered with the transparent heat-conductive film to S-polarized light with a wavelength of 440nm to 700nm incident at an incident angle of 65° is greater than or equal to 1.45.

[0022] In a possible implementation manner, the material of the transparent thermally conductive film includes a polymer matrix, a nanofiller and an additive;

[0023] The polymer matrix is ​​selected from at least one of poly(hexamethylene adipamide), nanocellulose, poly(p-phenylene benzobisoxazole) fiber, polyrotaxane, polyimide, and polyvinyl pyrrolidone;

[0024] The nanofiller is selected from at least one of boron nitride nanosheets, graphene nanosheets, and carbon nanotubes;

[0025] The auxiliary agent is selected from at least one of a dispersant, a leveling agent, and a reducing solution.

[0026] In one possible implementation, the thermal conductivity of the carbon nanotubes is 3000 W / (m·K) to 3500 W / (m·K), the thermal conductivity of the graphene nanosheets is 3000 W / (m·K) to 5300 W / (m·K), and the thermal conductivity of the boron nitride nanosheets is 1000 W / (m·K) to 2000 W / (m·K) at room temperature.

[0027] In a possible implementation manner, the material of the transparent thermally conductive film is a transparent insulating thermally conductive adhesive, and the thermal conductivity of the transparent insulating thermally conductive adhesive is 2 W / (m·K) to 12 W / mK.

[0028] In a possible implementation, the inner glass plate is provided with a through hole penetrating the third surface and the fourth surface, the contour of the through hole is greater than or equal to the contour of the information collection area, and the projection of the transparent thermal conductive film along the thickness direction of the window glass covers the contour of the through hole.

[0029] In a possible implementation manner, the vehicle window glass further includes a first bus bar and a second bus bar disposed between the second surface and the third surface, and the first bus bar and the second bus bar are in direct electrical contact with the transparent conductive layer.

[0030] In one possible implementation, a voltage of 36V is applied to the first busbar and the second busbar, and the window glass is heated at room temperature of 23°C for 20 minutes, and the difference between the maximum temperature of the fourth surface of the window glass having the transparent conductive layer and the central temperature of the information collection area covered with the transparent thermal conductive film is less than or equal to 46°C, or the difference between the maximum temperature of the fourth surface of the window glass having the transparent conductive layer and the central temperature of the information collection area covered with the transparent thermal conductive film is less than or equal to 40°C, or the difference between the maximum temperature of the fourth surface of the window glass having the transparent conductive layer and the central temperature of the information collection area covered with the transparent thermal conductive film is less than or equal to 35°C.

[0031] A second aspect of the present application provides a vehicle, comprising a vehicle body, an information collection device and a vehicle window glass as described above, wherein the vehicle window glass is connected to the vehicle body, the information collection device is arranged inside the vehicle, and the signal received and / or transmitted by the information collection device passes through the information collection area and the transparent thermal conductive film.

[0032] The beneficial effect of the present application is that by removing at least part of the transparent conductive layer in the information collection area, the interference or shielding of the transparent conductive layer on the signal received / transmitted by the information collection device can be reduced. By arranging a transparent heat-conductive film in the information collection area of ​​the vehicle window glass, and the projection of the transparent heat-conductive film along the thickness direction of the vehicle window glass overlaps with the projection of the transparent conductive layer, the heat generated by the transparent conductive layer after being energized can be conducted to the transparent heat-conductive film, and then conducted to the information collection area by the transparent heat-conductive film, thereby reducing or even eliminating the hot spots generated around the information collection area after the transparent conductive layer is energized, and avoiding the window glass from being broken due to large local heat. In addition, it can also heat the information collection area, which is beneficial to the defog, defrost or de-icing of the information collection area. Since the transparent heat-conductive film has electrical insulation, the transparent heat-conductive film will not divide the voltage and current of the transparent conductive layer, so that the heating power density of the transparent area can be guaranteed. That is to say, while ensuring the heating effect of the transparent area, the heating effect of the information collection area is also achieved, and the hot spots around the information collection area are reduced or even eliminated, thereby ensuring the safety performance of the vehicle window glass. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of current distribution after the transparent conductive layer of the vehicle window glass in the prior art is energized;

[0034] Figure 2 A schematic diagram of the structure of a vehicle provided in an embodiment of the present application;

[0035] Figure 3 A schematic structural diagram of a first embodiment of a vehicle window glass provided in an embodiment of the present application, wherein a first implementation manner of the positional relationship between a transparent conductive layer and a transparent thermal conductive film is shown;

[0036] Figure 4 for Figure 3 The schematic diagram of the plane structure of the laminated glass perpendicular to the thickness direction is shown;

[0037] Figure 5 for Figure 3 A structural schematic diagram of a second embodiment of the positional relationship between the transparent conductive layer and the transparent thermal conductive film;

[0038] Figure 6 for Figure 3 A structural schematic diagram of a third embodiment of the positional relationship between the transparent conductive layer and the transparent thermal conductive film;

[0039] Figure 7 for Figure 3 A structural schematic diagram of a fourth embodiment of the positional relationship between the transparent conductive layer and the transparent thermal conductive film;

[0040] Figure 8 for Figure 3A structural schematic diagram of a fifth embodiment of the positional relationship between the transparent conductive layer and the transparent thermal conductive film;

[0041] Fig. 9 for Figure 3 A structural schematic diagram of a sixth embodiment of the positional relationship between the transparent conductive layer and the transparent thermal conductive film;

[0042] Fig.10 A schematic structural diagram of a second embodiment of the vehicle window glass provided in an embodiment of the present application, wherein a first implementation manner of the positional relationship between the transparent conductive layer and the transparent thermal conductive film is shown;

[0043] Fig.11 for Fig.10 The second embodiment of the positional relationship between the transparent conductive layer and the transparent thermal conductive film is shown.

[0044] Description of reference numerals:

[0045] 300, 100-vehicle window glass, 310, 31-first busbar, 320, 32-second busbar, A, S1-information collection area, B, S2-non-information collection area, S3-film removal window, 1000-vehicle, 200-vehicle body, 10-laminated glass, 20-transparent conductive layer, 40-transparent thermal conductive film, 11-outer glass plate, 12-middle layer, 13-inner glass plate, 111-first surface, 112-second surface, 131-third surface, 132-fourth surface, S21-transparent area, S22-shielded area, 133-through hole. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0047] See also Figure 1In the prior art, a transparent conductive layer is usually arranged on the surface of the vehicle window glass 300, and a first busbar 310 and a second busbar 320 are arranged on opposite sides of the transparent conductive layer. By energizing the first busbar 310 and the second busbar 320, current flows through the transparent conductive layer, and the transparent conductive layer generates heat, thereby heating the vehicle window glass 300. In order to prevent the transparent conductive layer of the vehicle window glass 300 from interfering with or shielding the signal of the information collection device inside the vehicle, the transparent conductive layer of the information collection area A is usually removed, and only the transparent conductive layer of the non-information collection area B is retained. In this way, when the transparent conductive layer is heated, the current on the transparent conductive layer will avoid the information collection area A and flow along the edge of the information collection area A, thereby causing a large amount of current to converge locally around the information collection area A, and generating hot spots around the information collection area A, causing the temperature around the information collection area A to be too high, and in severe cases, even causing the vehicle window glass 300 to break.

[0048] For a conventional transparent conductive layer, when the voltage of the transparent conductive layer is a low voltage of 12-14V, after heating for 10-20 minutes, the temperature around the information collection area A can reach 60°C-80°C. When the voltage of the transparent conductive layer is a high voltage of 36-48V, after heating for 5-15 minutes, the temperature around the information collection area A can reach 70°C-120°C. With the increase of the heating voltage or the extension of the heating time, the temperature around the information collection area A may reach a higher level, and in severe cases, it may even cause the window glass 300 to break, thereby reducing the safety performance of the vehicle.

[0049] Based on this, the present application provides a vehicle window glass 100. When the vehicle window glass 100 of the present application is applied to a vehicle 1000, it can reduce hot spots around the information collection area S1 while increasing the central temperature of the confidence collection area S1, thereby improving the safety performance of the vehicle 1000.

[0050] See also Figure 2 , the vehicle 1000 includes a vehicle window glass 100, a vehicle body 200, an information collection device (not shown) and a vehicle-mounted power supply (not shown). The vehicle window glass 100 is connected to the vehicle body 200. The vehicle window glass 100 is installed in an opening of the vehicle body 200. The vehicle window glass 100 has an outer surface and an inner surface, the outer surface faces the outside of the vehicle 1000, and the inner surface faces the inside of the vehicle 1000. The information collection device and the vehicle-mounted power supply are arranged inside the vehicle 1000. The information collection device faces the vehicle window glass 100 and can capture and process the driving environment outside the vehicle 1000 into image data. The vehicle-mounted power supply can power the information collection device and the like.

[0051] It should be noted that the vehicle 1000 described in the present application may be, but is not limited to, a transportation vehicle such as a car, a train, or rail transit. The vehicle window glass 100 may be, but is not limited to, a front windshield, a side window glass, a rear windshield, and a sunroof glass of the vehicle 1000. The information collection device may be, but is not limited to, a visible light camera, a near infrared camera, a thermal imager, and a laser radar. The embodiments of the present application are described by taking the vehicle 1000 as a car, the vehicle window glass 100 as a front windshield, and the information collection device as a visible light camera as an example.

[0052] See also Figure 3 The present application provides a first embodiment of a vehicle window glass 100. In this embodiment, the vehicle window glass 100 includes a laminated glass 10, a transparent conductive layer 20, a first busbar 31, a second busbar 32, and a transparent thermal conductive film 40. The transparent conductive layer 20, the first busbar 31, the second busbar 32, and the transparent thermal conductive film 40 are all disposed on the laminated glass 10.

[0053] For ease of description, define Figure 3 The width direction of the vehicle window glass 100 is the X direction, the height direction of the vehicle window glass 100 is the Y axis direction, and the thickness direction of the vehicle window glass 100 is the Z axis direction. The X axis direction, the Y axis direction, and the Z axis direction are perpendicular to each other. The directional words such as "top" and "bottom" involved in this application are oriented toward the positive direction of the Y axis as "top" and oriented toward the negative direction of the Y axis as "bottom", and similar descriptions in the following text can be understood in the same way.

[0054] The laminated glass 10 includes an outer glass plate 11, an intermediate layer 12 and an inner glass plate 13, wherein the intermediate layer 12 is sandwiched between the outer glass plate 11 and the inner glass plate 13. The outer glass plate 11 includes a first surface 111 and a second surface 112 disposed in opposite directions, wherein the first surface 111 faces the outside of the vehicle 1000, and the first surface 111 serves as the outer surface of the vehicle window glass 100. The second surface 112 faces the intermediate layer 12. The inner glass plate 13 includes a third surface 131 and a fourth surface 132 disposed in opposite directions, wherein the third surface 131 faces the intermediate layer 12, and the fourth surface 132 faces the inside of the vehicle 1000, and the fourth surface 132 serves as the inner surface of the vehicle window glass 100. The intermediate layer 12 connects the second surface 112 and the third surface 131. In this embodiment, the laminated glass 10 is in a curved shape. Both the outer glass plate 11 and the inner glass plate 13 are subjected to a high temperature bending molding process of at least 500°C.

[0055] In other embodiments, the laminated glass 10 may also be in the shape of a flat plate. The shape of the laminated glass 10 is not limited to the shape described above, and it may be any shape that meets the use requirements of the vehicle window glass 100. The present application does not impose strict restrictions on the shape of the laminated glass 10.

[0056] In this embodiment, the outer glass plate 11 is transparent glass or tinted glass. Preferably, the outer glass plate 11 is transparent glass (standard white glass) or ultra-transparent glass (ultra-white glass). The visible light transmittance of the outer glass plate 11 is greater than or equal to 80%. The thickness of the outer glass plate 11 ranges from 1.6 mm to 5.0 mm. Exemplarily, the thickness of the outer glass plate 11 can be, but is not limited to, 1.6 mm, or 1.8 mm, or 2.1 mm, or 2.6 mm, or 3.2 mm, or 3.5 mm, or 4.0 mm, or 4.5 mm, or 5.0 mm, or other values ​​between 1.6 mm and 5.0 mm. Exemplarily, the thickness of the outer glass plate 11 is 1.8 mm; or, the thickness of the outer glass plate 11 is 2.1 mm.

[0057] The resistivity of the outer glass plate 11 is greater than or equal to 10 10 Ω·m. The thermal conductivity of the outer glass plate 11 is 0.7W / (m·K) to 1.3W / (m·K). Preferably, the thermal conductivity of the outer glass plate is 0.9W / (m·K) to 1.1W / (m·K). Further, the thermal conductivity of the outer glass plate is 0.95W / (m·K) to 1.05W / (m·K). The material of the outer glass plate 11 includes but is not limited to soda-lime glass, borosilicate glass, lithium aluminum silicate glass or aluminosilicate glass. Preferably, the material of the outer glass plate 11 is soda-lime glass. The thermal conductivity of soda-lime glass is 1.0W / (m·K). The present application does not specifically limit the type and material of the outer glass plate 11.

[0058] In this embodiment, the middle layer 12 is a transparent thermoplastic polymer film or a colored thermoplastic polymer film, and the thickness of the middle layer 12 is 0.38 mm to 2.28 mm. For example, the thickness of the middle layer 12 can be, but is not limited to, 0.38 mm, 0.76 mm, 1.14 mm, 1.52 mm, 1.9 mm, 2.28 mm, or other values ​​between 0.38 mm and 2.28 mm. The material of the thermoplastic polymer film can be selected from at least one of polyvinyl butyral (PVB), polyurethane (PU), ethylene-vinyl acetate copolymer (EVA), polyacrylate (PA), and ionic polymer (SentryGlasPlus, SGP). Exemplarily, the information acquisition device is a 905nm laser radar, and the middle layer 12 uses PVB; the information acquisition device is a 1550nm laser radar, and the middle layer 12 uses EVA. The visible light transmittance of the intermediate layer 12 is greater than or equal to 80%. For example, the visible light transmittance of the intermediate layer 12 may be, but is not limited to, 80%, 85%, 90%, 95%, etc. The intermediate layer 12 may be a single-layer structure or a multi-layer structure, and the multi-layer structure may be, for example, a double-layer structure, a three-layer structure, a four-layer structure, a five-layer structure, etc. The intermediate layer 12 may also have other functions, such as providing at least one tinted area as a shadow band to reduce the interference of sunlight to the human eye, or adding an infrared absorber to have a sunscreen or heat insulation function, or adding an ultraviolet absorber to have an ultraviolet shielding function, or at least one layer of the multi-layer structure has a higher plasticizer content to have a sound insulation function, or at least one layer of the multi-layer structure is wedge-shaped so that the window glass 100 can be used for a head-up display (Head Up Display) function. The thermal conductivity of the intermediate layer 12 is generally less than 0.3W / (m·K). Exemplarily, the thermal conductivity of PVB is 0.19 to 0.21W / (m·K). The thermal conductivity of EVA is 0.17 W / (m·K).

[0059] In this embodiment, the inner glass plate 13 is transparent glass or tinted glass. Preferably, the inner glass plate 13 is transparent glass or ultra-transparent glass. The visible light transmittance of the inner glass plate 13 is greater than or equal to 80%. The thickness of the inner glass plate 13 ranges from 0.7 mm to 5.0 mm. Exemplarily, the thickness of the inner glass plate 13 can be, but is not limited to, 0.7 mm, or 1.1 mm, or 1.6 mm, or 1.8 mm, or 2.1 mm, or 2.6 mm, or 3.2 mm, or 3.5 mm, or 4.0 mm, or 4.5 mm, or 5.0 mm, or other values ​​between 0.7 mm and 5.0 mm. Exemplarily, the thickness of the inner glass plate 13 is 1.8 mm; or, the thickness of the inner glass plate 13 is 2.1 mm.

[0060] The resistivity of the inner glass plate 13 is greater than or equal to 10 10 Ω·m. The thermal conductivity of the inner glass plate 13 is 0.7W / (m·K) to 1.3W / (m·K). Preferably, the thermal conductivity of the inner glass plate is 0.9W / (m·K) to 1.1W / (m·K). Further, the thermal conductivity of the outer glass plate is 0.95W / (m·K) to 1.05W / (m·K). The material of the inner glass plate 13 includes but is not limited to soda-lime glass, borosilicate glass, lithium aluminum silicate glass or aluminosilicate glass. Preferably, the material of the inner glass plate 13 is soda-lime glass. The thermal conductivity of soda-lime glass is 1.0W / (m·K). The present application does not specifically limit the type and material of the inner glass plate 13. Please refer to Figure 3 and Figure 4In this embodiment, the vehicle window glass 100 has an information collection area S1, a non-information collection area S2 and a film removal window S3. The information collection area S1 is provided with a transparent heat-conductive film 40. The signal received and / or transmitted by the information collection device passes through the information collection area S1 and the transparent heat-conductive film 40. The information collection device captures the driving environment outside the vehicle 1000 through the information collection area S1 and the transparent heat-conductive film 40 and processes it into image data, and the light outside the vehicle 1000 passes through the information collection area S1 and the transparent heat-conductive film 40 and is received by the information collection device. The non-information collection area S2 includes a transparent area S21 and a shielding area S22. The visible light transmittance of the transparent area S21 is greater than or equal to 70%, so as to facilitate the occupants of the vehicle to observe the environment outside the vehicle through the transparent area S21. The visible light transmittance of the shielding area S22 is less than or equal to 5%, so as to play the role of shielding, protection and improving the overall aesthetics; preferably, the visible light transmittance of the shielding area S22 is less than or equal to 1.5%, more preferably less than or equal to 0.5%, or even almost equal to 0, that is, opaque. Specifically, the shielding area S22 may be formed with a shielding layer, and the shielding layer is provided on at least one of the second surface 112, the third surface 131 and the fourth surface 132. The material of the shielding layer can be ceramic ink or ultraviolet ink, and the ceramic ink or ultraviolet ink is printed on the second surface 112, the third surface 131 and / or the fourth surface 132 by screen printing, inkjet printing and other processes, and the shielding layer is formed after curing or high-temperature sintering, and the thickness of the shielding layer is 5.0μm to 40.0μm.

[0061] exist Figure 4 In the embodiment, the transparent conductive layer 20 covers the transparent area S21, the information collection area S1 is located in the film removal window S3, and the film removal window S3 is located in the transparent area S21. It can be understood that the film removal window S3 can also be located in the shielding area S22.

[0062] The shielding area S22 is arranged circumferentially around the transparent area S21. Further optionally, the shielding area S22 is also arranged circumferentially around the film removal window S3. The area of ​​the film removal window S3 is greater than or equal to the area of ​​the information collection area S1. The information collection area S1 is located in the film removal window S3. The outline of the film removal window S3 is 0 to 10.0 mm larger than the outline of the information collection area S1, and specific examples include 0 (that is, the outline of the film removal window S3 completely overlaps with the outline of the information collection area S1), 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, etc.; preferably, the outline of the film removal window S3 is 1 mm to 5 mm larger than the outline of the information collection area S1.

[0063] Please continue reading Figure 3In this embodiment, the transparent conductive layer 20 includes a functional metal layer and a plurality of dielectric layers. Along the thickness direction of the transparent conductive layer 20, dielectric layers are stacked on opposite sides of the functional metal layer. The number of functional metal layers can be one, two, three, four or even more. Both the functional metal layer and the dielectric layer can be deposited by chemical vapor deposition (CVD) or physical vapor deposition (PVD). Exemplarily, both the functional metal layer and the dielectric layer are deposited by magnetron sputtering.

[0064] The functional metal layer can be a metal layer or an alloy layer. Exemplarily, the material of the functional metal layer can be a metal or a metal alloy of at least one element selected from Ag, Au, Cu, Al, and Pt. Preferably, the material of the functional metal layer is Ag or an Ag alloy. Examples of Ag alloys include AgCu alloys, AgIn alloys, AgAl alloys, etc. The resistivity of Ag is 1.6×10 -8 The material of the dielectric layer may be at least one selected from nitrides, oxides, and oxynitrides of metals such as Zn, Sn, Ti, Si, Al, Ni, Cr, Nb, Mg, Zr, Ga, Y, In, Sb, V, and Ta and alloys thereof, and specific examples include ZnSnOx, TiOx, SnOx, SiNOx, and SiNx.

[0065] It should be noted that, in the present embodiment, since the laminated glass 10 is in a curved shape, the laminated glass 10 needs to undergo a high-temperature bending and forming process at a temperature of at least 500°C. Therefore, the transparent conductive layer 20 needs to be able to withstand high-temperature heat treatment. That is to say, after the transparent conductive layer 20 undergoes a heat treatment process (such as bending and tempering), the optical properties, electrical properties, mechanical properties, etc. of the transparent conductive layer 20 will not be degraded, and may even become better.

[0066] Please refer to Figure 3 and Figure 4 In this embodiment, the transparent conductive layer 20 is disposed on the second surface 112 of the outer glass plate 11, the third surface 131 or the fourth surface 132 of the inner glass plate 13. The transparent conductive layer 20 completely covers the transparent area S21. In other embodiments, the transparent conductive layer 20 may also partially cover the transparent area S21.

[0067] Among them, the transparent conductive layer 20 in the film window S3 is removed by at least 50%, that is, the transparent conductive layer 20 in the information collection area S1 is at least partially removed. Preferably, the transparent conductive layer 20 in the film window S3 is removed by at least 60%, or at least 70%, or at least 80%, or at least 90%, or at least 95%, or at least 99%, or even completely removed by 100%. The transparent conductive layer 20 in the information collection area S1 is partially removed, including the transparent conductive layer 20 in the information collection area S1 being connected to the transparent conductive layer 20 outside the information collection area S1, that is, the transparent conductive layer 20 in the information collection area S1 is still electrically connected to the transparent conductive layer 20 outside the information collection area S1, and also including the transparent conductive layer 20 in the information collection area S1 is spaced from the transparent conductive layer 20 outside the information collection area S1, that is, the transparent conductive layer 20 in the information collection area S1 is electrically insulated from the transparent conductive layer 20 outside the information collection area S1.

[0068] Please continue reading Figure 3 In this embodiment, the materials of the first busbar 31 and the second busbar 32 include but are not limited to metal foil, conductive silver paste, conductive adhesive, etc. The metal foil can be copper foil, aluminum foil, etc.

[0069] In this embodiment, the first busbar 31 and the second busbar 32 are both stacked on the transparent conductive layer 20. That is, the first busbar 31 and the second busbar 32 are both electrically connected to the transparent conductive layer 20. Along the height direction (Y-axis direction) of the window glass 100, the first busbar 31 and the second busbar 32 are respectively located on opposite sides of the information collection area S1. Along the height direction (Y-axis direction) of the window glass 100, the distance between the first busbar 31 and the outer edge of the nearest laminated glass 10 ranges from 6.0 mm to 30.0 mm. The distance between the first busbar 31 and the outer edge of the nearest laminated glass 10 can be, but is not limited to, 6.0 mm, 12.0 mm, 18.0 mm, 24.0 mm, 30.0 mm, or other values ​​between 6.0 mm and 30.0 mm. The distance between the second busbar 32 and the outer edge of the nearest laminated glass 10 ranges from 6.0 mm to 30.0 mm (including the end values). The distance between the second busbar 32 and the outer edge of the nearest laminated glass 10 may be, but is not limited to, 6.0 mm, 12.0 mm, 18.0 mm, 24.0 mm, 30.0 mm, or other values ​​between 6.0 mm and 30.0 mm. Both the first busbar 31 and the second busbar 32 are located in the shielding area S22.

[0070] In other embodiments, the first busbar 31 and the second busbar 32 may also be located at opposite sides of the information collection area S1 in the width direction (X-axis direction) of the vehicle window glass 100 .

[0071] The first busbar 31 and the second busbar 32 are electrically connected to the positive electrode and the negative electrode of the vehicle power supply, respectively. The vehicle power supply, the first busbar 31, the transparent conductive layer 20, and the second busbar 32 form a conductive loop, and the vehicle power supply can provide voltage and current to the transparent conductive layer 20, so that the transparent conductive layer 20 generates heat after being energized, and then the transparent conductive layer 20 heats the transparent area S21 of the vehicle window glass 100, so as to defog, defrost or de-ice the transparent area S21 of the vehicle window glass 100.

[0072] The voltage of the vehicle power supply can be 12V-16V. When the first busbar 31 and the second busbar 32 are energized, the transparent conductive layer 20 generates heat and can reach at least 400W / m 2 The heating power density is beneficial to defog, defrost or de-ice the transparent area S21 of the vehicle window glass 100.

[0073] The voltage of the vehicle power supply can be 36V-48V. When the first busbar 31 and the second busbar 32 are energized, the transparent conductive layer 20 generates heat and can reach at least 500W / m 2 The heating power density can even reach at least 1000W / m 2 The heating power density is conducive to rapid defog, rapid defrost or rapid deicing of the transparent area S21 of the vehicle window glass 100.

[0074] Please continue reading Figure 3 In this embodiment, the transparent thermally conductive film 40 has electrical insulation and good thermal conductivity, and has high transmittance in the visible light band. The resistivity ρ of the transparent thermally conductive film 40 is ≥1000Ω·m, or the resistivity ρ of the transparent thermally conductive film 40 is ≥10000Ω·m, or the resistivity ρ of the transparent thermally conductive film 40 is ≥100000Ω·m. Specific examples include 1000Ω·m, 2000Ω·m, 5000Ω·m, 8000Ω·m, 10000Ω·m, 20000Ω·m, 50000Ω·m, 80000Ω·m, 100000Ω·m, 200000Ω·m, 300000Ω·m, 500000Ω·m, etc.

[0075] The thermal conductivity λ of the transparent thermally conductive film 40 is ≥1.5 W / (m·K), or the thermal conductivity λ of the transparent thermally conductive film 40 is ≥2.0 W / (m·K), or the thermal conductivity λ of the transparent thermally conductive film 40 is ≥5.0 W / (m·K), or the thermal conductivity λ of the transparent thermally conductive film 40 is ≥10.0 W / (m·K). Preferably, the thermal conductivity of the transparent thermally conductive film 40 is greater than or equal to 15.0 W / (m·K), or the thermal conductivity of the transparent thermally conductive film 40 is greater than or equal to 20.0 W / (m·K), or the thermal conductivity of the transparent thermally conductive film 40 is greater than or equal to 30.0 W / (m·K). Specific examples include 1.5W / (m·K), 2W / (m·K), 3W / (m·K), 5W / (m·K), 8W / (m·K), 10W / (m·K), 15W / (m·K), 20W / (m·K), 25W / (m·K), 30W / (m·K), 35W / (m·K), 40W / (m·K), 45W / (m·K), 50W / (m·K), etc.

[0076] In this embodiment, the transparent thermally conductive film 40 includes a polymer matrix, a nanofiller and an additive. The material of the polymer matrix is ​​selected from at least one of polyhexamethylene adipamide, nanocellulose, poly(p-phenylene benzobisoxazole) fiber, polyrotaxane, polyimide, and polyvinyl pyrrolidone. The material of the nanofiller is selected from at least one of boron nitride nanosheets, graphene nanosheets, and carbon nanotubes. The additive can be selected from at least one of a dispersant, a leveling agent, a reducing solution, and the like.

[0077] The thermal conductivity of boron nitride nanosheets at room temperature is 1000 W / (m·K) to 2000 W / (m·K), for example, 1000 W / (m·K), 1100 W / (m·K), 1200 W / (m·K), 1300 W / (m·K), 1400 W / (m·K), 1500 W / (m·K), 1600 W / (m·K), 1700 W / (m·K), 1800 W / (m·K), 1900 W / (m·K), 2000 W / (m·K), etc.

[0078] The thermal conductivity of graphene nanosheets at room temperature is 3000 W / (m·K) to 5300 W / (m·K), for example, 3000 W / (m·K), 3200 W / (m·K), 3500 W / (m·K), 3800 W / (m·K), 4000 W / (m·K), 4200 W / (m·K), 4500 W / (m·K), 4700 W / (m·K), 5000 W / (m·K), 5100 W / (m·K), 5300 W / (m·K), etc.

[0079] The thermal conductivity of carbon nanotubes at room temperature is 3000 W / (m·K) to 3500 W / (m·K), for example, 3000 W / (m·K), 3050 W / (m·K), 3100 W / (m·K), 3150 W / (m·K), 3200 W / (m·K), 3250 W / (m·K), 3300 W / (m·K), 3350 W / (m·K), 3400 W / (m·K), 3450 W / (m·K), 3500 W / (m·K), etc.

[0080] The transparent thermally conductive film 40 may be formed by, but is not limited to, printing, coating, pasting, etc. The coating method may be, for example, spray coating, flow coating, spin coating, etc. Preferably, the transparent thermally conductive film 40 is formed by spray coating. The spray coating method is easier to implement and can ensure the uniformity of the thickness of the transparent thermally conductive film 40.

[0081] In other embodiments, the transparent thermally conductive film 40 may also be made of a transparent insulating thermally conductive adhesive. The thermal conductivity of the transparent insulating thermally conductive adhesive is 2.0 W / (m·K) to 12.0 W / (m·K), such as 2 W / (m·K), 4 W / (m·K), 5 W / (m·K), 6 W / (m·K), 8 W / (m·K), 10 W / (m·K), 11 W / (m·K), 12.0 W / (m·K), etc. This embodiment does not specifically limit the material of the transparent thermally conductive film 40.

[0082] Please refer to Figure 3 and Figure 4In this embodiment, at least one of the first surface 111 of the outer glass plate 11, the second surface 112 of the outer glass plate 11, the third surface 131 of the inner glass plate 13, or the fourth surface 132 of the inner glass plate 13 is provided with a transparent heat-conductive film 40. Along the thickness direction (Z-axis direction) of the window glass 100, the orthographic projection of the transparent heat-conductive film 40 at least covers part of the information collection area S1; and the orthographic projection of the transparent heat-conductive film 40 overlaps with the orthographic projection of the transparent conductive layer 20. Equivalently, the projection of the transparent heat-conductive film 40 along the thickness direction of the window glass 100 covers the information collection area S1, and the projection of the transparent heat-conductive film 40 along the thickness direction of the window glass 100 overlaps with the projection of the transparent conductive layer 20 along the thickness direction of the window glass 100. In order to better conduct the heat of the hot spots around the information collection area S1, the projection of the transparent heat-conductive film 40 along the thickness direction of the window glass 100 overlaps with the projection of the transparent conductive layer 20 outside the information collection area S1. It can be understood that when the transparent thermally conductive film 40 is coplanar with the transparent conductive layer 20, the transparent thermally conductive film 40 is in contact with the transparent conductive layer 20, which is conducive to faster conduction of heat in the transparent conductive layer 20 to the transparent thermally conductive film 40. The transparent thermally conductive film 40 is in contact with the transparent conductive layer 20, and the projection of the transparent thermally conductive film 40 along the thickness direction of the vehicle window glass 100 overlaps with the projection of the transparent conductive layer 20 outside the information collection area S1, indicating that the transparent thermally conductive film 40 is in contact with the transparent conductive layer 20 outside the information collection area S1. When the transparent thermally conductive film 40 is not coplanar with the transparent conductive layer 20, the transparent thermally conductive film 40 is neither in contact with the transparent conductive layer 20 in the information collection area S1 nor with the transparent conductive layer 20 outside the information collection area S1. Along the thickness direction (Z-axis direction) of the vehicle window glass 100, the orthographic projection of the transparent thermally conductive film 40 overlaps with the orthographic projection of the transparent conductive layer 20. Preferably, the projection of the transparent heat-conductive film 40 along the thickness direction of the vehicle window glass 100 overlaps with the projection of the transparent conductive layer 20 outside the information collection area S1 .

[0083] The number of the transparent heat-conductive films 40 may be one, two, three or four. Exemplarily, the number of the transparent heat-conductive films 40 is two. One of the transparent heat-conductive films 40 is disposed on the second surface 112 of the outer glass plate 11, and the other transparent heat-conductive film 40 is disposed on the third surface 131 of the inner glass plate 13; or, one of the transparent heat-conductive films 40 is disposed on the second surface 112 of the outer glass plate 11, and the other transparent heat-conductive film 40 is disposed on the fourth surface 132 of the inner glass plate 13; or, one of the transparent heat-conductive films 40 is disposed on the third surface 131 of the inner glass plate 13, and the other transparent heat-conductive film 40 is disposed on the fourth surface 132 of the inner glass plate 13.

[0084] In this embodiment, the information collection device may use a high-pixel camera. In order to meet the use requirements of the high-pixel camera, the information collection area S1 covered with at least one transparent heat-conductive film 40 has a transmittance TL(440-700) of at least 60% for visible light with a wavelength of 440nm to 700nm incident at an incident angle of 65°, more preferably at least 65%, further preferably at least 70%, further preferably at least 75%, even more preferably at least 80%, and even more preferably at least 85%. TL(440-700) is the transmittance of the information collection area S1 for visible light with a wavelength of 440nm to 700nm incident at an incident angle of 65°.

[0085] In order to meet the use requirements of high-pixel cameras, it is also preferred that the ratio of the transmittance Tp of the information collection area S1 covered with at least one transparent heat-conductive film 40 to the P polarized light with a wavelength of 440nm~700nm incident at an incident angle of 65° and the transmittance Ts of the information collection area S1 covered with the transparent heat-conductive film 40 to the S polarized light with a wavelength of 440nm~700nm incident at an incident angle of 65° is greater than or equal to 1.45, that is, Tp / Ts≥1.45, and specific examples include 1.45, 1.46, 1.47, 1.48, 1.49, 1.50, 1.51, 1.52, etc.

[0086] In a first possible implementation, Figure 3 As shown, the transparent conductive layer 20 is deposited on the second surface 112 of the outer glass plate 11. The first busbar 31 and the second busbar 32 are in direct electrical contact with the transparent conductive layer 20. The transparent thermal conductive film 40 is stacked on the second surface 112 of the outer glass plate 11. The transparent thermal conductive film 40 is in direct contact with the transparent conductive layer 20.

[0087] In a second possible implementation, Figure 5 As shown, the transparent conductive layer 20 is deposited on the second surface 112 of the outer glass plate 11. The first busbar 31 and the second busbar 32 are both in direct electrical contact with the transparent conductive layer 20. The transparent thermal conductive film 40 is laminated on the third surface 131 of the inner glass plate 13. Along the thickness direction (Z-axis direction) of the window glass 100, the orthographic projection of the transparent thermal conductive film 40 overlaps with the orthographic projection of the transparent conductive layer 20.

[0088] In a third possible implementation, Figure 6 As shown, the transparent conductive layer 20 is deposited on the second surface 112 of the outer glass plate 11. The first busbar 31 and the second busbar 32 are both in direct electrical contact with the transparent conductive layer 20. The transparent thermal conductive film 40 is laminated on the fourth surface 132 of the inner glass plate 13. Along the thickness direction (Z-axis direction) of the window glass 100, the orthographic projection of the transparent thermal conductive film 40 overlaps with the orthographic projection of the transparent conductive layer 20.

[0089] In a fourth possible implementation, if Figure 7 As shown, the transparent conductive layer 20 is deposited on the third surface 131 of the inner glass plate 13. The first busbar 31 and the second busbar 32 are in direct electrical contact with the transparent conductive layer 20. The transparent thermal conductive film 40 is laminated on the third surface 131 of the inner glass plate 13. The transparent thermal conductive film 40 is in direct contact with the transparent conductive layer 20.

[0090] In a fifth possible implementation, Figure 8 As shown, the transparent conductive layer 20 is deposited on the third surface 131 of the inner glass plate 13. The first busbar 31 and the second busbar 32 are both in direct electrical contact with the transparent conductive layer 20. The transparent thermal conductive film 40 is laminated on the second surface 112 of the outer glass plate 11. Along the thickness direction (Z-axis direction) of the window glass 100, the orthographic projection of the transparent thermal conductive film 40 overlaps with the orthographic projection of the transparent conductive layer 20.

[0091] In a sixth possible implementation, Fig. 9 As shown, the transparent conductive layer 20 is deposited on the third surface 131 of the inner glass plate 13. The first busbar 31 and the second busbar 32 are both in direct electrical contact with the transparent conductive layer 20. The transparent thermal conductive film 40 is laminated on the fourth surface 132 of the inner glass plate 13. Along the thickness direction (Z-axis direction) of the window glass 100, the orthographic projection of the transparent thermal conductive film 40 overlaps with the orthographic projection of the transparent conductive layer 20.

[0092] The following transparent thermal conductive films 40 with different components are applied to Figure 3 A specific example of the information collection area S1 of the vehicle window glass 100 is described below.

[0093] In Example 1, the transparent thermally conductive film 40 includes the following raw materials in parts by weight: 81 parts of nanocellulose, 15 parts of graphene nanosheets, and 19 parts of boron nitride nanosheets.

[0094] In Example 2, the transparent thermally conductive film 40 includes the following raw materials in parts by weight: 81 parts of nanocellulose, 15 parts of graphene nanosheets, and 16 parts of boron nitride nanosheets.

[0095] In Example 3, the transparent thermally conductive film 40 includes the following raw materials in parts by weight: 81 parts of nanocellulose, 15 parts of graphene nanosheets, and 23 parts of boron nitride nanosheets.

[0096] In Example 4, the transparent thermally conductive film 40 includes the following raw materials in parts by weight: 75 parts of nanocellulose, 13 parts of graphene nanosheets, and 15 parts of boron nitride nanosheets.

[0097] In Example 5, the transparent thermally conductive film 40 includes the following raw materials in parts by weight: 85 parts of nanocellulose, 17 parts of graphene nanosheets, and 21 parts of boron nitride nanosheets.

[0098] In Example 6, the transparent thermally conductive film 40 includes the following raw materials in parts by weight: 63 parts of nanocellulose, 12 parts of graphene nanosheets, and 11 parts of boron nitride nanosheets.

[0099] In Example 7, the transparent thermally conductive film 40 includes the following raw materials in parts by weight: 89 parts of nanocellulose, 37 parts of graphene nanosheets, and 36 parts of boron nitride nanosheets.

[0100] In Example 8, the transparent thermally conductive film 40 includes the following raw materials in parts by weight: 80 parts of nanocellulose, 8 parts of graphene nanosheets, and 12 parts of boron nitride nanosheets.

[0101] In Example 9, the transparent thermally conductive film 40 includes the following raw materials in parts by weight: 92 parts of nanocellulose, 40 parts of graphene nanosheets, and 36 parts of boron nitride nanosheets.

[0102] In Example 10, the transparent thermally conductive film 40 includes the following raw materials in parts by weight: 80 parts of nanocellulose, 14 parts of graphene nanosheets, and 18 parts of boron nitride nanosheets.

[0103] In the comparative example, the information collection area S1 of the vehicle window glass 100 is not provided with the transparent heat conductive film 40 .

[0104] A voltage of 36 V was applied to the transparent conductive layer 20 of the vehicle window glass 100 through the first bus bar 31 and the second bus bar 32, and heated at room temperature (23°C) for 20 minutes. The visible light transmittance, thermal conductivity and center temperature of the information collection area S1 of the vehicle window glass 100 of Examples 1-10 and the comparative example were measured, and the results are entered in Table 1.

[0105] Visible light transmittance: measured according to international standard ISO13837.

[0106] Thermal conductivity: measured using a thermal conductivity meter.

[0107] Core temperature: measured using a thermal imager.

[0108] The highest temperature of the fourth surface 132 of the vehicle window glass 100 is 78° C.

[0109] Table 1: Parameters of the information collection area S1 of the vehicle window glass 100 of Examples 1-10 and Comparative Example

[0110]

[0111]

[0112] It can be seen from Table 1 that, compared with not setting the transparent thermal conductive film 40 in the information collection area S1 of the vehicle window glass 100, in this embodiment, by setting the transparent thermal conductive film 40 in the information collection area S1 of the vehicle window glass 100, the thermal conductivity of the information collection area S1 of the vehicle window glass 100 is significantly improved. The transparent thermal conductive film 40 can transfer the heat generated by the transparent conductive layer 20 to the information collection area S1, thereby increasing the temperature of the information collection area S1. Compared with the case where the transparent thermal conductive film 40 is not set in the prior art, the maximum temperature around the information collection area S1 is significantly reduced, which can reduce or even eliminate hot spots.

[0113] When the vehicle window glass 100 is provided with a transparent conductive layer 20, the difference between the maximum temperature of the fourth surface 132 of the vehicle window glass 100 and the central temperature of the information collection area S1 covered with the transparent thermally conductive film 40 is less than or equal to 46°C, or the difference between the maximum temperature of the fourth surface 132 of the vehicle window glass 100 and the central temperature of the information collection area S1 covered with the transparent thermally conductive film 40 is less than or equal to 40°C, or the difference between the maximum temperature of the fourth surface 132 of the vehicle window glass 100 and the central temperature of the information collection area S1 covered with the transparent thermally conductive film 40 is less than or equal to 35°C, further less than or equal to 30°C, further less than or equal to 25°C, or even less than or equal to 20°C.

[0114] It can be understood that in this embodiment, by at least partially removing the transparent conductive layer 20 in the information collection area S1, the interference or shielding of the signal received / transmitted by the information collection device by the transparent conductive layer 20 can be reduced. By setting a transparent thermal conductive film 40 in the information collection area S1 of the vehicle window glass 100, the transparent thermal conductive film 40 can improve the thermal conductivity of the information collection area S1, thereby accelerating the speed at which the heat around the information collection area S1 is transferred to the information collection area S1. The projection of the transparent thermal conductive film 40 along the thickness direction of the vehicle window glass 100 overlaps with the projection of the transparent conductive layer 20. The heat generated by the transparent conductive layer 20 after being energized can be transferred to the transparent thermal conductive film 40, and then transferred to the information collection area S1 by the transparent thermal conductive film 40, so that the information collection area S1 can be heated, which is used for defog, defrost or de-icing the information collection area S1. In particular, when the projection of the transparent heat-conductive film 40 along the thickness direction of the vehicle window glass 100 overlaps with the projection of the transparent conductive layer 20 outside the information collection area S1, it is possible to reduce or even eliminate the hot spots generated around the information collection area S1 after the transparent conductive layer 20 is powered on, thereby preventing the vehicle window glass 100 from breaking due to high heat. Since the transparent heat-conductive film 40 is electrically insulating, the transparent heat-conductive film 40 will not divide the voltage and current of the transparent conductive layer 20, thereby ensuring the heating power density of the transparent area S21. In other words, this embodiment achieves the heating effect on the information collection area S1 while ensuring the heating effect of the transparent area S21, and at the same time reduces or even eliminates the hot spots around the information collection area S1, thereby ensuring the safety performance of the vehicle window glass 100.

[0115] When the transparent thermally conductive film 40 and the transparent conductive layer 20 are located on the same surface of the laminated glass 10, the transparent thermally conductive film 40 is in direct contact with the transparent conductive layer 20, and the heat of the transparent conductive layer 20 can be directly and quickly transferred to the transparent thermally conductive film 40, so the thermal conductivity of the transparent thermally conductive film 40 is higher. When the transparent thermally conductive film 40 and the transparent conductive layer 20 are located on different surfaces of the laminated glass 10, the heat of the transparent conductive layer 20 can also be indirectly transferred to the transparent thermally conductive film 40 through the outer glass plate 11, the inner glass plate 13 or the intermediate layer 12.

[0116] Please continue reading Fig.10 The present application provides a second embodiment of a vehicle window glass 100 . The difference between this embodiment and the first embodiment is that the inner glass plate 13 is provided with a through hole 133 .

[0117] In this embodiment, the implementation of the outer glass plate 11 and the intermediate layer 12 can refer to the above-mentioned first embodiment.

[0118] In this embodiment, the inner glass plate 13 is provided with a through hole 133. Along the thickness direction (Z-axis direction) of the vehicle window glass 100, the through hole 133 penetrates the third surface 131 and the fourth surface 132 of the inner glass plate 13. The outline of the through hole 133 is greater than or equal to the outline of the information collection area S1. The information collection area S1 is located within the outline of the through hole 133. The outline of the film removal window S3 is greater than or equal to the outline of the through hole 133. The through hole 133 is located within the outline of the film removal window S3. In other embodiments, the outline of the through hole 133 may also be greater than the outline of the film removal window S3, and the film removal window S3 is located within the outline of the through hole 133.

[0119] In this embodiment, the layer structure, material and deposition method of the transparent conductive layer 20 can all refer to the first embodiment.

[0120] In this embodiment, the transparent conductive layer 20 is disposed on the second surface 112 of the outer glass plate 11, the third surface 131 or the fourth surface 132 of the inner glass plate 13. The transparent conductive layer 20 completely covers the transparent area S21. It can be understood that when the transparent conductive layer 20 is disposed on the third surface 131 or the fourth surface 132 of the inner glass plate 13, the transparent conductive layer 20 avoids the through hole 133 of the inner glass plate 13, and the transparent conductive layer 20 in the information collection area S1 is completely removed 100%.

[0121] In other embodiments, the transparent conductive layer 20 may also partially cover the transparent area S21 .

[0122] In this embodiment, the materials, positions, and distances between the first busbar 31 and the second busbar 32 and the outer edge of the laminated glass 10 closest thereto may also refer to the first embodiment.

[0123] In this embodiment, the resistivity and thermal conductivity of the transparent thermal conductive film 40 can refer to the first embodiment. The material and formation method of the transparent thermal conductive film 40 can also refer to the first embodiment.

[0124] In this embodiment, at least one of the first surface 111 of the outer glass plate 11, the second surface 112 of the outer glass plate 11, the third surface 131 of the inner glass plate 13, or the fourth surface 132 of the inner glass plate 13 is provided with a transparent heat-conductive film 40. Along the thickness direction (Z-axis direction) of the window glass 100, the orthographic projection of the transparent heat-conductive film 40 at least covers part of the information collection area S1; and the orthographic projection of the transparent heat-conductive film 40 overlaps with the orthographic projection of the transparent conductive layer 20. Equivalently, the projection of the transparent heat-conductive film 40 along the thickness direction of the window glass 100 covers the information collection area S1, and overlaps with the projection of the transparent conductive layer 20 along the thickness direction of the window glass 100. The projection of the transparent heat-conductive film 40 along the thickness direction of the window glass 100 covers the outline of the through hole 133. In other embodiments, the projection of the transparent heat-conductive film 40 along the thickness direction of the window glass 100 may not cover the outline of the through hole 133.

[0125] It should be noted that when the transparent heat-conductive film 40 is provided on the first surface 111 or the second surface 112 of the outer glass plate 11, the transparent heat-conductive film 40 can be directly printed or coated on the first surface 111 or the second surface 112 of the outer glass plate 11, or can be pasted on the first surface 111 or the second surface 112 of the outer glass plate 11 in the form of a film. When the transparent heat-conductive film 40 is provided on the third surface 131 or the fourth surface 132 of the inner glass plate 13, the transparent heat-conductive film 40 can be pasted on the third surface 131 or the fourth surface 132 of the inner glass plate 13 in the form of a film, and the transparent heat-conductive film 40 covers the through hole 133.

[0126] In a first possible implementation, Fig.10 As shown, the transparent conductive layer 20 is laminated on the second surface 112 of the outer glass plate 11. The first busbar 31 and the second busbar 32 are both in direct electrical contact with the transparent conductive layer 20. The transparent thermal conductive film 40 is laminated on the second surface 112 of the outer glass plate 11. The transparent thermal conductive film 40 is in direct contact with the transparent conductive layer 20. The projection of the transparent thermal conductive film 40 along the thickness direction of the vehicle window glass 100 covers the outline of the through hole 133.

[0127] In a second possible implementation, Fig.11As shown, the transparent conductive layer 20 is laminated on the third surface 131 of the inner glass plate 13. The first busbar 31 and the second busbar 32 are both in direct electrical contact with the transparent conductive layer 20. The transparent thermal conductive film 40 is laminated on the second surface 112 of the outer glass plate 11. Along the thickness direction of the vehicle window glass 100, the orthographic projection of the transparent thermal conductive film 40 overlaps with the orthographic projection of the transparent conductive layer 20. The projection of the transparent thermal conductive film 40 along the thickness direction of the vehicle window glass 100 covers the outline of the through hole 133.

[0128] It can be understood that, in this embodiment, by providing the through hole 133 in the inner glass plate 13 and the through hole 133 completely covering the information collection area S1 , the visible light transmittance and optical quality of the laminated glass 10 in the information collection area S1 can be improved.

[0129] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A vehicle window glass, characterized in that: The laminated glass comprises a laminated glass, a transparent conductive layer and a transparent heat-conductive film, wherein the laminated glass comprises an outer glass plate, an intermediate layer and an inner glass plate, wherein the outer glass plate comprises a first surface and a second surface arranged opposite to the first surface, the inner glass plate comprises a third surface and a fourth surface arranged opposite to the third surface, the intermediate layer is sandwiched between the outer glass plate and the inner glass plate, the second surface faces the intermediate layer, and the third surface faces the intermediate layer; The transparent conductive layer is provided on the second surface, the third surface or the fourth surface, the window glass is provided with an information collection area, and the transparent conductive layer in the information collection area is at least partially removed; At least one of the first surface, the second surface, the third surface or the fourth surface is provided with the transparent heat-conductive film, and the projection of the transparent heat-conductive film along the thickness direction of the window glass covers the information collection area and overlaps with the projection of the transparent conductive layer.

2. The vehicle window glass according to claim 1, characterized in that: The transparent heat-conductive film is in direct contact with the transparent conductive layer; And / or, a projection of the transparent heat-conductive film along the thickness direction of the vehicle window glass overlaps with a projection of the transparent conductive layer outside the information collection area.

3. The vehicle window glass according to claim 1, characterized in that: The number of the transparent thermally conductive films is two; One of the transparent heat-conductive films is disposed on the second surface, and another of the transparent heat-conductive films is disposed on the third surface; Alternatively, one of the transparent heat-conductive films is disposed on the second surface, and another of the transparent heat-conductive films is disposed on the fourth surface; Alternatively, one of the transparent heat-conductive films is disposed on the third surface, and the other transparent heat-conductive film is disposed on the fourth surface.

4. The vehicle window glass according to claim 1, characterized in that: The resistivity of the transparent thermally conductive film is ρ≥1000Ω·m, or ρ≥10000Ω·m, or ρ≥100000Ω·m.

5. The vehicle window glass according to claim 1, characterized in that: The thermal conductivity of the transparent thermally conductive film is λ≥1.5 W / (m·K), or λ≥2 W / (m·K), or λ≥5 W / (m·K), or λ≥10 W / (m·K).

6. The vehicle window glass according to claim 1, characterized in that: The thermal conductivity of the transparent thermally conductive film is λ≥15 W / (m·K), or λ≥20 W / (m·K), or λ≥30 W / (m·K).

7. The vehicle window glass according to claim 1, characterized in that: The vehicle window glass is provided with a film removal window, the transparent conductive layer in the film removal window is removed by at least 95%, the area of ​​the film removal window is greater than or equal to the area of ​​the information collection area, the outline of the film removal window is 0 to 10 mm larger than the outline of the information collection area, or the outline of the film removal window is 1 mm to 5 mm larger than the outline of the information collection area.

8. The vehicle window glass according to claim 1, characterized in that: The thermal conductivity of the outer glass plate and / or the inner glass plate is 0.7W / (m·K) to 1.3W / (m·K), or the thermal conductivity of the outer glass plate and / or the inner glass plate is 0.9W / (m·K) to 1.1W / (m·K).

9. The vehicle window glass according to claim 1, characterized in that: The information collection area covered with the transparent heat-conductive film has a transmittance TL of at least 60% for visible light with a wavelength of 440nm to 700nm incident at an incident angle of 65°. (440- 700 ) ; And / or, the transmittance TL of the information collection area covered with the transparent heat-conductive film to red light with a wavelength of 600nm to 700nm incident at an incident angle of 65° is (600-700) The transmittance TL of the information collection area covered with the transparent thermal conductive film to the visible light with a wavelength of 440nm to 700nm incident at an incident angle of 65° (440-700) The ratio between them is greater than or equal to 0.8; And / or, the ratio between the transmittance Tp of the information collection area covered with the transparent heat-conductive film to P-polarized light with a wavelength of 440nm to 700nm incident at an incident angle of 65° and the transmittance Ts of the information collection area covered with the transparent heat-conductive film to S-polarized light with a wavelength of 440nm to 700nm incident at an incident angle of 65° is greater than or equal to 1.

45.

10. The vehicle window glass according to claim 1, characterized in that: The material of the transparent thermal conductive film includes a polymer matrix, a nano filler and an additive; The polymer matrix is ​​selected from at least one of poly(hexamethylene adipamide), nanocellulose, poly(p-phenylene benzobisoxazole) fiber, polyrotaxane, polyimide, and polyvinyl pyrrolidone; The nanofiller is selected from at least one of boron nitride nanosheets, graphene nanosheets, and carbon nanotubes; The auxiliary agent is selected from at least one of a dispersant, a leveling agent, and a reducing solution.

11. The vehicle window glass according to claim 10, characterized in that: The thermal conductivity of the carbon nanotube is 3000W / (m·K) to 3500W / (m·K), the thermal conductivity of the graphene nanosheet is 3000W / (m·K) to 5300W / (m·K), and the thermal conductivity of the boron nitride nanosheet is 1000W / (m·K) to 2000W / (m·K) at room temperature.

12. The vehicle window glass according to claim 1, characterized in that: The material of the transparent heat-conductive film is a transparent insulating heat-conductive adhesive, and the thermal conductivity of the transparent insulating heat-conductive adhesive is 2W / (m·K) to 12W / mK.

13. The vehicle window glass according to claim 1, characterized in that: The inner glass plate is provided with a through hole penetrating the third surface and the fourth surface, the contour of the through hole is greater than or equal to the contour of the information collection area, and the projection of the transparent thermal conductive film along the thickness direction of the vehicle window glass covers the contour of the through hole.

14. The vehicle window glass according to claim 1, characterized in that: The vehicle window glass further includes a first bus bar and a second bus bar disposed between the second surface and the third surface, wherein the first bus bar and the second bus bar are in direct electrical contact with the transparent conductive layer.

15. The vehicle window glass according to claim 14, characterized in that: A voltage of 36V is applied to the first busbar and the second busbar, and the window glass is heated for 20 minutes at room temperature of 23°C. The difference between the maximum temperature of the fourth surface of the window glass having the transparent conductive layer and the central temperature of the information collection area covered with the transparent thermal conductive film is less than or equal to 46°C, or the difference between the maximum temperature of the fourth surface of the window glass having the transparent conductive layer and the central temperature of the information collection area covered with the transparent thermal conductive film is less than or equal to 40°C, or the difference between the maximum temperature of the fourth surface of the window glass having the transparent conductive layer and the central temperature of the information collection area covered with the transparent thermal conductive film is less than or equal to 35°C.

16. A vehicle, characterized in that: It comprises a vehicle body, an information collection device and a vehicle window glass as described in any one of claims 1 to 15, wherein the vehicle window glass is connected to the vehicle body, the information collection device is arranged inside the vehicle, and the signal received and / or transmitted by the information collection device passes through the information collection area and the transparent thermal conductive film.

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