Windshield

Abstract

A windshield is provided with: an inner glass plate disposed on the inner side of a vehicle; an outer glass plate disposed opposite to the inner glass plate and disposed on the outer side of the vehicle; and an intermediate film that bonds the outer glass sheet and the inner glass sheet, the intermediate film having a functional layer, and the windshield having impact resistance against impact from the outside of the vehicle.

Description

Technical Field

[0001] The present invention relates to a windshield. Background Art

[0002] Laminated glass is commonly used for automobile windshields. Laminated glass consists of an outer glass sheet, an inner glass sheet, and a resin interlayer bonding these sheets together. This structure allows the interlayer to shield against impacts, such as from collisions with objects outside the vehicle. Furthermore, in recent years, interlayer films have been required to provide various functions. For example, the incorporation of functional films such as heat-reflecting films and anti-reflective films within the interlayer has been proposed (e.g., Patent Document 1).

[0003] Prior art literature Patent Literature Patent Document 1: Japanese Patent Application Laid-Open No. 2007-223883 Summary of the Invention

[0004] Technical problem to be solved by the invention However, when a windshield is impacted from outside the vehicle, the windshield may not be able to sufficiently withstand the impact, causing the inner glass sheet to break and separate from the interlayer film. Therefore, a windshield with high impact resistance to impacts from outside the vehicle is desired.

[0005] The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a windshield capable of improving its impact resistance when subjected to an impact from outside the vehicle.

[0006] Technical solutions to technical problems Item 1. A windshield comprising: The inner glass panel located inside the vehicle, An outer glass plate disposed opposite to the inner glass plate and disposed on the outer side of the vehicle, and The intermediate film bonding the outer glass plate and the inner glass plate, The above-mentioned intermediate film has a functional layer, The windshield is impact-resistant against impact from the outside of the vehicle.

[0007] Item 2. The windshield according to Item 1, wherein the interlayer film comprises: The above functional layers a first adhesive layer disposed closer to the outer glass plate than the functional layer, and a second adhesive layer disposed closer to the inner glass plate than the functional layer, The thickness of the first adhesive layer is greater than or equal to 0.9 mm.

[0008] Item 3. The windshield according to Item 1, wherein the interlayer film comprises: the functional layer, a first adhesive layer disposed closer to the outer glass plate than the functional layer, and a second adhesive layer disposed closer to the inner glass plate than the functional layer, the first adhesive layer has at least a core layer, and a pair of outer layers having a higher rigidity than the core layer and sandwiching the core layer.

[0009] Item 4. The windshield according to Item 3, wherein the Young's modulus of the core layer is 25 MPa or less at a frequency of 100 Hz and a temperature of 20°C.

[0010] Item 5. The windshield according to Item 3 or 4, wherein the Young's modulus of the outer layer is 560 MPa or more at a frequency of 100 Hz and a temperature of 20°C.

[0011] Item 6. The windshield according to any one of Items 3 to 5, wherein the thickness of the first adhesive layer is 0.76 mm or more.

[0012] Item 7. The windshield according to Item 1, wherein the interlayer film has: the functional layer, a first adhesive layer disposed closer to the outer glass plate than the functional layer, and a second adhesive layer disposed closer to the inner glass plate than the functional layer, the thickness of the outer glass plate is 2.3 mm or more, and the thickness of the inner glass plate is 2.0 mm or less.

[0013] Item 8. The windshield according to any one of Items 2 to 6, wherein the thickness of the outer glass plate is greater than the thickness of the inner glass plate.

[0014] Effects of the Invention With the windshield according to the present application, the impact resistance when an impact from the outside of the vehicle is received can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a plan view showing one embodiment in which the laminated glass for automobiles according to the present application is applied to a windshield.

[0016] Figure 2 is a cross-sectional view of Figure 1 .

[0017] Figure 3 is a cross-sectional view of an interlayer film.

[0018] Figure 4 is an example of a block diagram of an in-vehicle system. DETAILED DESCRIPTION

[0019] Hereinafter, one embodiment of the windshield according to the present invention will be described with reference to the drawings. Figure 1 This is a top view of the windshield. Figure 2 yes Figure 1 For the sake of convenience, Figure 1 The up and down directions are called "up and down", "vertical", and "longitudinal". Figure 1 The left and right directions are called "left and right". Figure 1 The windshield as seen from the inside of the car is shown as an example. Figure 1 The inside of the paper is the outside of the car. Figure 1 The front side of the paper is the inner side of the car.

[0020] like Figure 1 and Figure 2 As shown, the windshield comprises a generally rectangular laminated glass 10, which is tilted and mounted on the vehicle body. Furthermore, a shielding layer 110 is laminated on the inner surface of the laminated glass 10, facing the vehicle interior, to block the view from outside the vehicle. Furthermore, a camera 2, which includes a built-in camera for capturing images of conditions outside the vehicle, is mounted on the shielding layer 110 via a bracket (not shown). A photographic window 113 is provided on the shielding layer 110 at a position corresponding to the photographic device 2, allowing the photographic device 2 to capture images of conditions outside the vehicle through this window 113.

[0021] Image processing device 3 is connected to imaging device 2, and images captured by imaging device 2 are processed by image processing device 3. The imaging device 2 and image processing device 3 constitute an in-vehicle system 5, which can provide various information to passengers based on processing performed by image processing device 3. Each component is described below.

[0022] <1. Laminated glass> 1-1. Glass Plate First, the outer glass sheet 11 and the inner glass sheet 12 will be described. These outer glass sheet 11 and the inner glass sheet 12 can be any known glass sheet, and can be made of heat-absorbing glass, standard clear glass, green glass, dark green glass, or UV green glass. However, these glass sheets 11 and 12 must achieve visible light transmittances that meet the safety standards of the country in which the vehicle is used. For example, the outer glass sheet 11 can ensure the required solar absorption rate, while the inner glass sheet 12 can adjust the visible light transmittance to meet safety standards. The following describes an example of clear glass, heat-absorbing glass, and soda-lime glass.

[0023] (clear glass) SiO2: 70-73% by mass Al2O3: 0.6-2.4 mass% CaO: 7-12 mass% MgO: 1.0 to 4.5 mass% R2O: 13 to 15 mass% (R is alkali metal) Total iron (T-Fe203) converted into Fe203: 0.08 to 0.14 mass% (Endothermic glass) The composition of the endothermic glass can be set, for example, to a composition in which, with the composition of the transparent glass as a reference, the ratio of total iron (T-Fe203) converted into Fe203 is 0.4 to 1.3 mass%, the ratio of Ce02 is 0 to 2 mass%, the ratio of Ti02 is 0 to 0.5 mass%, and the skeleton component (mainly Si02 or Al203) of the glass is decreased in correspondence with the increase in T-Fe203, Ce02, and Ti02.

[0024] (Soda-lime glass) Si02: 65 to 80 mass% Al203: 0 to 5 mass% CaO: 5 to 15 mass% MgO: 2 mass% or more NaO: 10 to 18 mass% K20: 0 to 5 mass% MgO + CaO: 5 to 15 mass% Na20 + K20: 10 to 20 mass% SO3: 0.05 to 0.3 mass% B203: 0 to 5 mass% Total iron (T-Fe203) converted into Fe203: 0.02 to 0.03 mass% In each of the glass sheets 11 and 12, the visible light transmittance can also be adjusted. Thus, for example, by adjusting the content of Fe203, the glass sheet is colored, whereby the visible light transmittance can be adjusted. For example, when the content of Fe203 is large, the coloration is green, and the green glass or dark green glass described above is obtained. On the other hand, when the content of Fe203 is small, the transparent glass described above is obtained.

[0025] The thickness of the laminated glass 10 according to the present embodiment is not particularly limited, and as an example, the total of the thicknesses of the outer glass sheet 11 and the inner glass sheet 12 can be 2.1 to 6 mm, and from the viewpoint of light weight, the total of the thicknesses of the outer glass sheet 11 and the inner glass sheet 12 is preferably 2.4 to 3.8 mm, further preferably 2.6 to 3.4 mm, and particularly preferably 2.7 to 3.2 mm.

[0026] The outer glass plate 11 mainly requires durability against damage from the outside, impact resistance, and, as a windshield for a vehicle, impact resistance against flying objects such as small stones. On the other hand, the greater the thickness, the more the weight increases, and thus is not preferable. From this viewpoint, the thickness of the outer glass plate 11 is preferably set to 1.8 to 2.5 mm, and further preferably set to 1.9 to 2.4 mm. The thickness can be determined in accordance with the use of the glass.

[0027] The thickness of the inner glass plate 12 can be the same as that of the outer glass plate 11, or, for example, in order to reduce the weight of the laminated glass 10, the thickness can be made smaller than that of the outer glass plate 11. From the viewpoint of weight reduction, the thickness of the outer glass plate 11 can be made thicker by an amount corresponding to the reduction in the thickness of the inner glass plate 12, if permitted. Thereby, the impact from the outside of the vehicle can be mitigated. As a result, the effect of peeling of the functional film and the adhesive layer between the glass plates due to the impact from the outside can be improved. Specifically, from the viewpoint of the strength of the glass, 0.6 to 2.3 mm is preferable, 0.8 to 1.6 mm is more preferable, and 1.0 to 1.4 mm is particularly preferable. Further, 0.8 to 1.3 mm is further preferable. Thereby, for example, the thickness of the outer glass plate 11 can be set to 2.3 mm or more, and the impact resistance can be improved.

[0028] In addition, the laminated glass 10 is curved in a manner that protrudes toward the outside of the vehicle, and the measurement positions of the thickness at this time are the upper and lower portions of the center line extending in the up-and-down direction from the center in the left-and-right direction of the laminated glass 10. The measurement device is not particularly limited, and, for example, a thickness gauge such as SM-112 manufactured by TECLOCK Co., Ltd. can be used. At the time of measurement, the laminated glass 10 is disposed in a manner that the curved surface of the laminated glass 10 is placed on a flat surface, and the end portion of the laminated glass 10 is gripped by the thickness gauge to perform the measurement.

[0029] <1-2. Interlayer Film> As shown in FIG. 1, the laminated glass 10 according to the first embodiment includes an outer glass plate 11, an inner glass plate 12, and an interlayer film 13 disposed between the outer glass plate 11 and the inner glass plate 12. Figure 3 The first interlayer film 13 has a transparent first adhesive layer 131 adhered to the outer glass plate 11, a transparent second adhesive layer 132 adhered to the inner glass plate 12, and a functional layer 135 disposed between the two adhesive layers 131 and 132.

[0030] <1-2-1. Adhesive Layer> The first adhesive layer 131 and the second adhesive layer 132 are not particularly limited as long as they can be adhered to each of the glass plates 11 and 12 by fusion, and, for example, can be formed of polyvinyl butyral resin (PVB), ethylene-vinyl acetate resin (EVA), or the like. Generally, the hardness of the polyvinyl butyral resin can be controlled by (a) the polymerization degree of polyvinyl alcohol as a starting material, (b) the acetalization degree, (c) the type of plasticizer, (d) the addition ratio of the plasticizer, and the like.

[0031] The surfaces of the first adhesive layer 131 and the second adhesive layer 132 before being bonded to the glass plates 11 and 12 may be embossed to facilitate expulsion of air when bonding to the functional layer 135 or bonding to the glass plates 11 and 12 .

[0032] The second adhesive layer 132 can be prepared separately during production, but can also be pre-laminated on the vehicle interior side of the functional layer 135. In this case, the intermediate film 13 can be produced by laminating the first adhesive layer 131 and the functional layer 135 with the second adhesive layer 132.

[0033] The thickness of the first adhesive layer 131 and the second adhesive layer 132 is not particularly limited, but is preferably 0.001 to 2.0 mm, more preferably 0.1 to 1.0 mm. However, the thicknesses of the two adhesive layers 131 and 132 may be the same or different. For example, when the second adhesive layer 132 is pre-laminated on the functional layer 135 as described above, the thickness of the second adhesive layer 132 may be 0.001 to 0.100 mm.

[0034] The total thickness of the adhesive layers 131 and 132 is preferably 0.76 mm or greater. This is to ensure the penetration resistance specified in JIS R3211 and R3212 in the windshield.

[0035] However, from the perspective of resistance to peeling during impact, the thickness of at least one of the adhesive layers 131 and 132 is preferably set to 0.9 mm or greater, more preferably 1.1 mm or greater, and even more preferably 2.0 mm or greater. For example, the thickness of the first adhesive layer 131 can be set to 1.1 μm or greater, and the thickness of the second adhesive layer 132 can be set to 25 μm or greater. This allows the first adhesive layer 131 to absorb the impact from outside the vehicle, preventing the inner glass sheet 12 from separating from the interlayer film 13 and scattering into the vehicle interior.

[0036] The upper limit of the thickness of the entire interlayer film 13 is not particularly limited, but from the viewpoint of weight reduction, the thickness of the interlayer film 13 is preferably 10.0 mm or less.

[0037] <1-2-2. Functional layer> Films having various functions can be used as the functional layer 135 depending on the application. For example, known heat insulation films, heat-generating films, projection films, light-emitting films, antenna films, sound insulation films, and light-adjusting films can be used.

[0038] Heat-insulating films are films that primarily reflect or absorb infrared rays to suppress temperature rises inside a vehicle. For example, a known infrared reflective film (IR reflective film) that primarily reflects infrared rays can be used to suppress temperature rises inside a vehicle.

[0039] The heat generating film is a film for defogging or deicing, and can be a film in which a plurality of thin wires that generate heat by application of a voltage are supported by a base film.

[0040] The projection film is a film on which information is projected by light irradiated from a head-up display device. The projection film is not particularly limited as long as it is a film that reflects light, for example, having a refractive index different from those of the two adhesive layers 131 and 132. The size of the projection film is not particularly limited, and is preferably larger than the area of the projected information.

[0041] The light emitting film is a film in which an LED or the like is incorporated and is capable of emitting light that displays prescribed characters, figures, or the like.

[0042] The antenna film, like the heat generating film, is a film in which an FM, AM, DTV, DAB, or the like antenna is disposed on a base film. Among them, the above are examples of the functional layer 133, and are not limited thereto.

[0043] The soundproofing film can be composed of three layers in which a soft core layer having low rigidity is sandwiched by a pair of surface layers (also referred to as outer layers) having higher rigidity than the core layer. However, it is not limited to this composition, and can be formed of a plurality of layers having a soft core layer. For example, it can be formed of two layers including the core layer (one layer of the core layer and one layer of the surface layer), or five or more odd-numbered layers in which the core layer is disposed at the center (one layer of the core layer and four layers of the surface layer), or even-numbered layers in which the core layer is included on the inner side (one layer of the core layer and the other layers being surface layers).

[0044] The core layer is not particularly limited as long as it is softer than the surface layer, and the material can be selected based on the Young's modulus. For example, the Young's modulus of the core layer is preferably set to 1 MPa or more and 25 MPa or less at a frequency of 100 Hz and a temperature of 20 degrees. In particular, the upper limit is preferably 20 MPa or less, further preferably 16 MPa or less, and particularly preferably 10 MPa or less.

[0045] As a measurement method, for example, a solid viscoelasticity measuring device DMA 50 manufactured by Metravib Co., Ltd. can be used to perform frequency dispersion measurement at a deformation of 0.05%. Hereinafter, in the present specification, the Young's modulus is the measured value measured by the above method, unless otherwise specified. Among them, the measurement at a frequency of 200 Hz or less uses a measured value, and the measurement at more than 200 Hz uses a calculated value based on the measured value. The calculated value is a value obtained based on a master curve calculated from the measured value using the WLF method.

[0046] On the other hand, the Young's modulus of the surface layer is not particularly limited, as long as it is larger than that of the core layer. For example, it is preferably in the order of 400 MPa or more, 440 MPa or more, 560 MPa or more, 650 MPa or more, 1300 MPa or more, 1764 MPa or more at a frequency of 100 Hz and a temperature of 20 degrees. On the other hand, the upper limit of the Young's modulus of the surface layer is not particularly limited.

[0047] In addition, in the case where the pair of surface layers sandwiching the core layer is provided, the Young's modulus of the surface layer on the outer glass plate 11 side is preferably larger than that of the surface layer on the inner glass plate 12 side. In addition, by making the difference between the Young's moduli of the core layer and the surface layer large, the shock resulting from the impact from the outside of the vehicle can be absorbed, and the impact resistance can be improved.

[0048] In addition, the material constituting the core layer and the surface layer is not particularly limited, but needs to be at least a material whose Young's modulus can be in the above range, and for example, a resin material can be used. Specifically, for example, the surface layer can be constituted of polyvinyl butyral resin (PVB). Polyvinyl butyral resin is preferable because of its excellent adhesion to each glass plate or penetration resistance. On the other hand, the core layer can be constituted of ethylene vinyl acetate resin (EVA), or polyvinyl acetal resin which is softer than the polyvinyl butyral resin constituting the surface layer. By sandwiching the soft core layer in the middle, the adhesion and penetration resistance equivalent to those of a single-layer resin interlayer film can be maintained, and the soundproof performance can be greatly improved.

[0049] Such a soundproof film can be used not only as a functional layer but also as the first adhesive layer 131 or the second adhesive layer 132. For example, as the first adhesive layer 131, the above-described soundproof film having a thickness of 760 μm or more can be used. As described above, the soundproof film is constituted of multiple layers, and the core layer is soft, so the impact from the outside of the vehicle can be absorbed, and the inner glass plate 12 can be prevented from falling off the interlayer film 13 and scattering into the vehicle.

[0050] The light-adjusting film (electrochromic sheet) has a property of changing the transmittance of light by applying a voltage. Thus, the transmittance and the coloring property can be changed. The light-adjusting film contains, for example, an electrochromic compound and a metal alkoxide compound. By containing the metal alkoxide compound, the adhesion to the conductive film is excellent.

[0051] The thickness of the film constituting the above-described functional layer 133 is not particularly limited, and for example, it is preferably set to 0.01 to 2.0 mm, and further preferably 0.03 to 0.6 mm. In this way, the upper limit of the thickness of the end surface of the film periphery is preferably 2.0 mm. This is because when the thickness of the end surface of the film is large, the functional layer 133 is smaller than the two adhesive layers 131, 132, and thus a step is generated in the interlayer film 13, and due to this step, air can be contained and a bubble can be generated when the interlayer film 13 is sandwiched between the two glass plates 11, 12.

[0052] Functional layers include layers with various functions, such as holographic layers, conductive layers, and ultraviolet-reflecting layers reflecting electromagnetic waves in specific wavelength ranges; color correction layers, infrared absorption layers, and ultraviolet absorption layers absorbing light in specific wavelength ranges; fluorescent layers and other luminous layers; thermochromic layers, photochromic layers, design layers, and high elastic modulus layers. Furthermore, multiple functional layers 133 may be provided, each with the same or different functions. Furthermore, the film may have a functional layer having a fine concave-convex pattern on its surface.

[0053] Furthermore, between the glass sheets 210 and 220 of the two glass sheets 11 and 12, within the scope that does not impair the effects of the present embodiment described below, in addition to the interlayer film 13, or within the interlayer film 13, a film or device having functions such as infrared reflection, light emission, power generation, dimming, visible light reflection, scattering, decoration, absorption, and electric heating may be provided. Furthermore, a film having functions such as anti-fog, water repellency, heat insulation, and low reflection may be provided on the surface of at least one of the glass sheets 11 and 12.

[0054] The above-mentioned adhesive layers 131 and 132 and functional layer 135 may be appropriately combined.

[0055] <2. Shielding layer> Next, the shielding layer 110 will be described. Figure 1 and Figure 2 As illustrated, in this embodiment, the shielding layer 110 is laminated on the inner surface 130 of the laminated glass 10 on the vehicle interior side (the inner surface of the inner glass plate 12) and is formed along the peripheral edge of the laminated glass 10. Figure 1 As shown, the shielding layer 110 can be divided into a peripheral region 111 along the periphery of the laminated glass 10 and a protruding region 112 that protrudes downward in a rectangular shape from the upper edge of the laminated glass 10. The peripheral region 111 blocks light from entering the periphery of the windshield. Furthermore, if the functional layer 135 is smaller than the glass sheets 11 and 12, the peripheral region 111 can be used to conceal the periphery. Meanwhile, the protruding region 112 is designed to prevent the camera device 2 located inside the vehicle from being visible from outside the vehicle.

[0056] However, if the shielding layer 110 blocks the photographic range of the photographic device 2, the conditions outside the vehicle in front cannot be photographed using the photographic device 2. Therefore, in this embodiment, a rectangular photographic window 113 is provided in the protruding area 112 of the shielding layer 110 at a position corresponding to the photographic device 2 so that the photographic device 2 can photograph conditions outside the vehicle.

[0057] The shielding layer 110 can be layered on, for example, the inner face of the outer glass plate 11, the outer face of the inner glass plate 12, in addition to being layered on the inner face of the inner glass plate 12 as described above. Also, it can be layered on both the inner face of the outer glass plate 11 and the inner face of the inner glass plate 12.

[0058] Next, the material of the shielding layer 110 will be described. The material of the shielding layer 110 can be appropriately selected according to the embodiment as long as it can shield the view from the outside of the vehicle, and for example, a dark-colored ceramic such as black, brown, gray, navy, and the like can be used.

[0059] In the case where the material of the shielding layer 110 is a black ceramic, for example, a black ceramic is layered on the peripheral portion on the inner face 130 of the inner glass plate 12 by screen printing or the like, and the ceramic layered with the inner glass plate 12 is heated. Thereby, the shielding layer 110 can be formed on the peripheral portion of the inner glass plate 12. Also, when the black ceramic is printed, an area where the black ceramic is not printed is provided. Thereby, the photographing window 113 can be formed. Note that the ceramic used in the shielding layer 110 can use various materials. For example, a ceramic having the composition shown in Table 1 below can be used in the shielding layer 110. <3. Vehicle-mounted system> Next, the vehicle-mounted system 5 will be described with reference to Figure 4 The vehicle-mounted system 5 having the photographing device 2 and the image processing device 3 will be described. Figure 4 The configuration of the vehicle-mounted system 5 will be exemplified. As shown in Figure 4 The vehicle-mounted system 5 according to the present embodiment has the photographing device 2 described above and the image processing device 3 connected to the photographing device 2.

[0060] The image processing device 3 is a device that processes a photographed image obtained by the photographing device 2. In the image processing device 3, for example, as a hardware configuration, a storage section 31, a control section 32, an input / output section 33, and the like are connected by a bus, which are general hardware. However, the hardware configuration of the image processing device 3 is not limited to this example, and regarding the specific hardware configuration of the image processing device 3, addition, omission, and addition of the configuration elements can be appropriately made according to the embodiment.

[0061] The storage section 31 stores various data and programs (not shown) used for the processing performed by the control section 32. The storage section 31 can be realized by, for example, a hard disk, or a recording medium such as a USB memory. Also, the various data and programs stored in the storage section 31 can be obtained from a recording medium such as a CD (Compact Disc) or a DVD (Digital Versatile Disc). Also, the storage section 31 can be referred to as an auxiliary storage device.

[0062] As described above, the laminated glass 10 is tilted relative to the vertical and curved. Furthermore, the camera 2 captures the exterior of the vehicle through the laminated glass 10. Therefore, the image captured by the camera 2 is distorted by factors such as the position, shape, refractive index, and optical defects of the laminated glass 10. Furthermore, this distortion also includes inherent aberrations of the camera lens of the camera 2. Therefore, the storage unit 31 may also store correction data for correcting image distortion caused by aberrations between the laminated glass 10 and the camera lens.

[0063] The control unit 32 includes one or more processors, such as a microprocessor or CPU (Central Processing Unit), and peripheral circuits (such as ROM (Read Only Memory), RAM (Random Access Memory), and interface circuits) used for processing by these processors. ROM, RAM, and the like are also referred to as main storage devices, meaning they are located within the address space in which the processors within the control unit 32 operate. The control unit 32 functions as the image processing unit 321 by executing various data and programs stored in the storage unit 31.

[0064] The image processing unit 321 processes the photographic image obtained by the photographic device 2. The processing of the photographic image can be appropriately selected according to the embodiment. For example, the image processing unit 321 analyzes the photographic image through pattern matching, etc., so that the subject captured in the photographic image can be identified. In this embodiment, in order for the photographic device 2 to capture the situation in front of the vehicle, the image processing unit 321 can also determine whether a person or other living thing is captured in front of the vehicle based on the subject recognition. In addition, when a person / object is captured in front of the vehicle, the image processing unit 321 can also output a warning message according to a prescribed method. In addition, for example, the image processing unit 321 can also perform prescribed processing on the photographic image. Moreover, the image processing unit 321 can also output the processed photographic image to a display device (not shown) such as a display connected to the image processing device 3.

[0065] The input / output unit 33 is one or more interfaces for transmitting and receiving data with devices external to the image processing device 3. Examples of the input / output unit 33 include an interface for connecting to a user interface or an interface such as a USB (Universal Serial Bus). In this embodiment, the image processing device 3 connects to the imaging device 2 via the input / output unit 33 to obtain images captured by the imaging device 2.

[0066] As the image processing device 3 , a device designed specifically for the provided service can also be used as a general-purpose device such as a PC (Personal Computer) or a tablet terminal.

[0067] Furthermore, the information acquisition device is mounted on a bracket (not shown), which is mounted on the shielding layer 110. Therefore, in this state, the mounting of the information acquisition device on the bracket and the mounting of the bracket on the shielding layer are adjusted so that the optical axis of the camera of the information acquisition device passes through the photographic window 113. Furthermore, a cover (not shown) is mounted on the bracket so as to cover the photographic device 2. Therefore, the photographic device 2 is arranged in a space surrounded by the laminated glass 10, the bracket, and the cover, and cannot be seen from the inside of the vehicle. Furthermore, only a portion of the photographic device 2 can be seen from the outside of the vehicle through the photographic window 113. Furthermore, the photographic device 2 and the input / output unit 33 are connected by a cable (not shown), which is drawn out from the cover and connected to the image processing device 3 arranged at a predetermined position in the vehicle.

[0068] <4. Windshield Manufacturing Method> Next, an example of a method for manufacturing the windshield configured as described above will be described. First, a method for manufacturing the laminated glass 10 will be described.

[0069] First, the aforementioned shielding layer 110 is laminated onto at least one of the flat outer glass sheet 11 and the inner glass sheet 12. Next, these glass sheets 11 and 12 are formed into a curved shape. The forming method is not particularly limited, and known methods can be employed. For example, the flat glass sheets can be passed through a heating furnace and then pressed using upper and lower molds to form a curved shape. Alternatively, the flat outer and inner glass sheets can be stacked, placed in a frame-shaped forming mold, and then passed through a heating furnace. This softens the glass sheets and, under their own weight, forms them into a curved shape.

[0070] After the outer glass sheet 11 and the inner glass sheet 12 are formed into a curved shape, the interlayer film 13 is sandwiched between the outer and inner glass sheets 11, 12. The interlayer film 13 is placed in a rubber bag and pre-bonded at approximately 70-110°C while decompressing and evacuating the air. Pre-bonding can also be performed using other methods. For example, the interlayer film 13 is sandwiched between the outer and inner glass sheets 11, 12 and heated in an oven at 45-65°C. The laminated glass is then rolled at 0.45-0.55 MPa. The laminated glass is then heated again in an oven at 80-105°C and rolled again at 0.45-0.55 MPa. This completes the pre-bonding.

[0071] Next, main adhesion is performed. For the laminated glass on which the pre-adhesion has been performed, the main adhesion is performed at 8 to 15 atmospheres and 100 to 150°C using an autoclave, for example. Specifically, the main adhesion can be performed at 14 atmospheres and 145°C, for example. In this way, the laminated glass 10 according to the present embodiment can be manufactured.

[0072] <5. Features> With the windshield glass described above, the impact resistance can be improved. That is, when an impact from the outside is received, the inside glass plate 12 can be prevented from peeling off from the interlayer film and scattering into the vehicle interior.

[0073] <6. Modified Examples> The above describes one embodiment of the present application, but the present application is not limited to the above-described embodiment, and various modifications can be made without departing from the gist thereof. The following modified examples can also be appropriately combined.

[0074] <6-1> The shape of the shielding layer 110 is one example, and the configuration is not particularly limited, and the shape can be appropriately changed according to the equipment or the like to be provided.

[0075] <6-2> In the above-described embodiment, the photographing window 113 is formed on the shielding layer 110, and the photographing device 2 is disposed, but such a photographing window 113 and photographing device 2 can not be provided.

[0076] Examples The following describes examples of the present application. The present application is not limited to the following examples.

[0077] The following describes the production of the windshield glass according to Examples 1 to 17. Specifically, as shown in Table 2 below.

[0078] As shown in Table 2, in Examples 1, 7 to 17, the soundproofing film described above is used as the first adhesion layer (the adhesion layer on the outside of the vehicle). That is, the soundproofing film having a core layer with a low Young's modulus and a pair of surface layers with a high Young's modulus is used. In Examples 2 to 6, the first adhesion layer is configured of a single layer of film. In addition, in Examples 1 to 16, an infrared ray reflecting film is used as the functional layer, and in Example 17, an electrochromic sheet is used.

[0079] In addition, the core layer is formed of an ethylene-vinyl acetate resin (EVA), and the surface layer is formed of a polyvinyl butyral resin (PVB). Furthermore, the second adhesion layer (the adhesion layer on the inside of the vehicle) is formed of a polyvinyl butyral resin (PVB).

[0080] In Embodiment 2, peeling of the functional film was prevented by making the glass plate on the outside of the vehicle thicker. Likewise, in Embodiments 7 and 8, the inside glass plate was made lightweight by making the glass plate on the inside of the vehicle thinner, and peeling of the inside glass plate from the interlayer film was suppressed by making the glass plate on the outside of the vehicle thicker.

[0081] In Embodiments 3 to 6, peeling of the inside glass plate from the interlayer film was suppressed by making the thickness of the first adhesive layer 0.9 mm or greater.

[0082] In Embodiments 9 to 11, as the first adhesive layer, a soundproofing film in which the core layer was made thicker was used, whereby peeling of the inside glass plate from the interlayer film was suppressed.

[0083] In Embodiments 12 to 15, as the first adhesive layer, a soundproofing film in which the Young’s modulus of the core layer was reduced and the Young’s modulus of the surface layer was increased was used. In this way, by making the difference between the Young’s moduli of the core layer and the surface layer greater, the shock resulting from an impact from the outside of the vehicle could be absorbed, impact resistance was improved, and peeling of the inside glass plate from the interlayer film was suppressed.

[0084] In Embodiment 16, as the first adhesive layer, a soundproofing film in which the core layer was made thicker was used. By using such an interlayer film with high soundproofing effect, peeling of the inside glass plate from the interlayer film was suppressed.

[0085] In Embodiment 17, as the functional layer, an electrochromic film was used. In the case of using such a film, the same effects could also be observed.

[0086] For the above Embodiments 1 to 17, the impact resistance test prescribed in JIS 3212 (2021) 5.4 was performed, and all of Embodiments 1 to 17 satisfied the criteria of this test, i.e., the criteria prescribed in JIS 3211 (2021) 5.3. Therefore, it can be said that the windshields of Embodiments 1 to 17 have impact resistance against impacts from the outside of the vehicle.

[0087] [Table 2] Explanation of Symbols 1: windshield; 11: outside glass plate; 12: inside glass plate; 13: interlayer film; 131: first adhesive layer; 132: second adhesive layer; 135: functional layer.

Claims

1. A windshield, characterized in that: have: The inner glass panel located inside the vehicle, an outer glass plate disposed opposite to the inner glass plate and disposed on the outer side of the vehicle, and an intermediate film bonding the outer glass plate and the inner glass plate, The intermediate film has a functional layer, The windshield has impact resistance against impact from the outside of the vehicle.

2. The windshield according to claim 1, wherein: The intermediate film has: The functional layer, a first adhesive layer disposed closer to the outer glass plate than the functional layer, and a second adhesive layer disposed closer to the inner glass plate than the functional layer, The thickness of the first adhesive layer is greater than 0.9 mm.

3. The windshield according to claim 1, wherein: The intermediate film has: The functional layer, a first adhesive layer disposed closer to the outer glass plate than the functional layer, and a second adhesive layer disposed closer to the inner glass plate than the functional layer, The first adhesive layer includes at least a core layer and a pair of outer layers having higher rigidity than the core layer and sandwiching the core layer.

4. The windshield according to claim 3, wherein: The Young's modulus of the core layer is 25 MPa or less at a frequency of 100 Hz and a temperature of 20°C.

5. The windshield according to claim 3 or 4, characterized in that: The Young's modulus of the outer layer is 560 MPa or more at a frequency of 100 Hz and a temperature of 20°C.

6. The windshield according to claim 3, wherein: The thickness of the first adhesive layer is greater than 0.76 mm.

7. The windshield according to claim 1, wherein: The intermediate film has: The functional layer, a first adhesive layer disposed closer to the outer glass plate than the functional layer, and a second adhesive layer disposed closer to the inner glass plate than the functional layer, The thickness of the outer glass plate is greater than or equal to 2.3 mm, and the thickness of the inner glass plate is less than or equal to 2.0 mm.

8. The windshield according to claim 2 or 3, characterized in that: The thickness of the outer glass plate is greater than the thickness of the inner glass plate.

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