Vehicular glass

Abstract

Provided is a vehicular glass with which it is possible to suppress a decrease in strength at an opening part where a transmission member is provided. A vehicular glass 1 includes: a glass member 10 in which two glass substrates 12, 14 and an intermediate layer 16 positioned between the glass substrates 12, 14 are laminated, and an opening 19 penetrating from a surface 12A on a first direction side (Z1 direction side) to a surface 18B on a second direction side (Z2 direction side) opposite to the first direction side is formed; and a transmission member 20 disposed in the opening 19 and transmitting far infrared rays. In the intermediate layer 16, the rigidity in a first region H including the peripheral edge of the opening 19 is higher than the rigidity in a second region S spaced apart from the first region H.

Description

Vehicle glass

[0001] This invention relates to vehicle glass.

[0002] In recent years, far-infrared cameras have been installed in automobiles. Automobile windows typically do not transmit far-infrared rays with wavelengths of 8 μm to 13 μm. Therefore, for example, Patent Document 1 describes forming an opening in the vehicle glass and providing a far-infrared-transmitting member within the opening. This allows the far-infrared rays that have passed through the transmittance member to be detected by a far-infrared camera.

[0003] International Publication No. 2021 / 182290

[0004] Incidentally, ordinary window glass is laminated glass, with a resin layer sandwiched between two layers of glass. Even if the glass is broken by flying debris from outside the vehicle, the expansion of the resin prevents penetration and protects the occupants. However, when a through-hole is made in the window glass and filled with an infrared-transmitting material, as in Patent Document 1, there is a problem in that the through-hole in the laminated glass becomes a weak point in terms of strength.

[0005] The present invention has been made in view of the above problems, and aims to provide vehicle glass that can suppress the reduction in strength at the opening where a transparent member is provided.

[0006] To solve the above-mentioned problems and achieve the objective, the vehicle glass according to this disclosure comprises a glass member in which two glass substrates and an intermediate layer located between the glass substrates are laminated to form an opening that penetrates from the surface on the first direction side to the surface on the second direction side opposite to the first direction side, and a transparent member disposed in the opening that transmits far-infrared rays, wherein the rigidity of the intermediate layer in a first region including the peripheral edge of the opening is higher than the rigidity of the second region separated from the first region.

[0007] To solve the above-mentioned problems and achieve the objective, another embodiment of vehicle glass according to the present disclosure comprises a glass member having two glass substrates and an intermediate layer located between the glass substrates laminated together to form an opening that penetrates from the surface on the first direction side to the surface on the second direction side opposite to the first direction side, and a transparent member disposed within the opening that transmits far-infrared rays, wherein the peripheral edge of the intermediate layer on the opening side is flush with the peripheral edge of the glass substrate on the opening side, or protrudes toward the center of the opening from the peripheral edge of the glass substrate on the opening side.

[0008] According to the present invention, it is possible to suppress the reduction in strength at the opening portion where the permeable member is provided.

[0009] Figure 1 is a schematic diagram showing the vehicle glass according to the first embodiment mounted on a vehicle. Figure 2 is a schematic plan view of the vehicle glass according to the first embodiment. Figure 3 is a cross-sectional view along line A-A in Figure 2. Figure 4 is a cross-sectional view along line B-B in Figure 2. Figure 5 is an enlarged cross-sectional view of the area around the opening of the glass member in the vehicle glass. Figure 6 is a diagram showing an example configuration when a far-infrared camera is attached to the vehicle glass. Figure 7 is a schematic plan view showing an example configuration when the vehicle glass is assembled on a vehicle and wiped with a wiper. Figure 8 is an enlarged cross-sectional view of the area around the opening of the glass member in the vehicle glass according to the second embodiment. Figure 9 is an enlarged cross-sectional view of the area around the opening of the glass member in the vehicle glass according to the third embodiment. Figure 10 is an enlarged cross-sectional view of the area around the opening of the glass member in the vehicle glass according to the fourth embodiment. Figure 11 is an enlarged cross-sectional view of the area around the opening of the glass member in the vehicle glass according to the fifth embodiment. Figure 12 is an enlarged cross-sectional view of the area around the opening of the glass member in a modified vehicle glass.

[0010] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings. The present invention is not limited by these embodiments, and if there are multiple embodiments, they may be constructed by combining each embodiment. Numerical values ​​include a range of rounding. When a numerical range is indicated by connecting the upper and lower limits with ~, this range includes the upper and lower limits. That is, for example, "X to Y" means that it is X or greater and Y or less. In this embodiment, the lower and upper limits can be combined as appropriate. That is, for example, if a lower limit is listed for a certain parameter and an upper limit is listed for that parameter, the lower limit may be any value selected from the listed lower limits, and the upper limit may be any value selected from the listed upper limits. Furthermore, unless otherwise specified, physical properties and dimensions will be described as values ​​at room temperature, i.e., between 5°C and 35°C.

[0011] (First Embodiment) (Vehicle) Figure 1 is a schematic diagram showing the vehicle glass according to the first embodiment mounted on a vehicle. As shown in Figure 1, the vehicle glass 1 according to the first embodiment is mounted on a vehicle V. The vehicle glass 1 is a window member applied to the windshield of the vehicle V. That is, the vehicle glass 1 is used as the front window of the vehicle V, or in other words, as a windshield. A far-infrared camera CA1 and a visible light camera CA2 are mounted inside the vehicle V. The inside of the vehicle V refers to, for example, the interior of the vehicle where the driver's seat is located. Note that the vehicle glass 1 is not limited to being applied to the windshield of the vehicle V, but may be mounted at any position on the vehicle V.

[0012] The vehicle glass 1, far-infrared camera CA1, and visible light camera CA2 constitute the camera unit 100. The far-infrared camera CA1 is a camera that detects far-infrared rays. The far-infrared camera CA1 captures a thermal image of the outside of the vehicle V by detecting far-infrared rays from outside the vehicle V. The visible light camera CA2 is a camera that detects visible light. The visible light camera CA2 captures an image of the outside of the vehicle V by detecting visible light from outside the vehicle V. In addition to the far-infrared camera CA1 and the visible light camera CA2, the camera unit 100 may further include, for example, LiDAR (Light Detection and Ranging) or millimeter-wave radar. Here, far-infrared rays refer to, for example, electromagnetic waves in the wavelength band of 8 μm to 13 μm, and visible light refers to, for example, electromagnetic waves in the wavelength band of 380 nm to 830 nm.

[0013] (Vehicle Glass) Figure 2 is a schematic plan view of vehicle glass according to the first embodiment. Figure 3 is a cross-sectional view along line A-A in Figure 2. Figure 4 is a cross-sectional view along line B-B in Figure 2. As shown in Figure 2, the upper edge of the vehicle glass 1 will be referred to as the upper edge portion 1a, the lower edge as the lower edge portion 1b, one side edge as the side edge portion 1c, and the other side edge as the side edge portion 1d. The upper edge portion 1a is the edge portion located on the vertically upper side when the vehicle glass 1 is mounted on the vehicle V. The lower edge portion 1b is the edge portion located on the vertically lower side when the vehicle glass 1 is mounted on the vehicle V. The side edge portion 1c is the edge portion located on one side when the vehicle glass 1 is mounted on the vehicle V. The side edge portion 1d is the edge portion located on the other side when the vehicle glass 1 is mounted on the vehicle V.

[0014] Hereinafter, among the directions parallel to the surface of the vehicle glass 1, the direction from the upper edge 1a to the lower edge 1b and the direction from the lower edge 1b to the upper edge 1a will be defined as the Y direction, and the direction from the side edge 1c to the side edge 1d and the direction from the side edge 1d to the side edge 1c will be defined as the X direction. In this embodiment, the X direction and the Y direction are orthogonal. The direction perpendicular to the surface of the vehicle glass 1, that is, the thickness direction of the vehicle glass 1, will be defined as the Z direction. Furthermore, one direction along the Z direction will be defined as the Z1 direction (first direction), and the direction opposite to the Z1 direction will be defined as the Z2 direction (second direction). The Z1 direction (first direction) is, for example, the direction from the inside to the outside of the vehicle V when the vehicle glass 1 is mounted on the vehicle V. The Z2 direction (second direction) is, for example, the direction from the outside to the inside of the vehicle V when the vehicle glass 1 is mounted on the vehicle V. The X and Y directions are along the surface of the vehicle glass 1, but if the surface of the vehicle glass 1 is curved, for example, they may be in directions tangent to the surface of the vehicle glass 1 at the center point O of the vehicle glass 1. The center point O is the center position of the vehicle glass 1 when viewed from the Z direction.

[0015] As shown in Figure 3, the vehicle glass 1 comprises a glass member 10. The glass member 10 is the main body portion of the vehicle glass 1 that constitutes the windshield of the vehicle V. The glass member 10 may be single-pane glass or laminated glass, but in this embodiment, the glass member 10 is made of laminated glass. Specifically, the glass member 10 comprises a glass substrate 12, a glass substrate 14, an intermediate layer 16, and a light-shielding layer 18. In the vehicle glass 1, the glass substrate 12, the intermediate layer 16, the glass substrate 14, and the light-shielding layer 18 are laminated in this order in the Z2 direction. The glass substrate 12 and the glass substrate 14 are fixed (bonded) to each other via the intermediate layer 16.

[0016] The glass substrates 12 and 14 may be inorganic glass or organic glass. As inorganic glass, for example, soda-lime glass, aluminosilicate glass, borosilicate glass, alkali-free glass, quartz glass, etc., can be used without particular limitation. Among these, soda-lime glass is particularly preferred in terms of manufacturing cost and moldability. For example, in the case of inorganic glass, glass plates formed by the float method or the like are preferred. When glass substrates 12 and 14 are inorganic glass, glass substrates 12 and 14 may be either untempered glass or tempered glass. Tempered glass may be either physically tempered glass or chemically tempered glass. Untempered glass is made by forming molten glass into a plate and slowly cooling it. Tempered glass is made by forming a compressive stress layer on the surface of untempered glass. Tempered glass may be either physically tempered glass or chemically tempered glass. In the case of physically strengthened glass, the glass surface may be strengthened by creating a compressive stress layer on the glass surface due to the temperature difference between the glass surface and the inside of the glass, through operations other than slow cooling, such as air-cooled strengthening, where a uniformly heated glass plate is rapidly cooled from a temperature near its softening point during bending. In the case of chemically strengthened glass, the glass surface may be strengthened after bending by creating compressive stress on the glass surface by methods such as ion exchange. Known molding techniques such as gravity molding, press molding, and roller molding may be used for bending the glass substrate. Glass that absorbs ultraviolet or infrared rays may also be used. Furthermore, the glass substrate 12 and the glass substrate 14 may be transparent or colored. The intermediate layer 16 is an adhesive layer that bonds the glass substrate 12 and the glass substrate 14. As the intermediate layer 16, known materials such as polyvinyl butyral (hereinafter also referred to as PVB) modified material, ethylene-vinyl acetate copolymer (EVA) material, urethane resin material, and vinyl chloride resin material can be used. Furthermore, the intermediate layer 16 may contain functional particles such as ultraviolet absorbers, infrared absorbers, adhesion enhancers, antioxidants, and light stabilizers. The intermediate layer 16 may be transparent or colored. The intermediate layer 16 may also have a multilayer structure of two or more layers.More specifically, the glass substrate 12 includes one surface 12A (the surface facing Z1) and the other surface 12B (the surface facing Z2), with the other surface 12B in contact with one surface 16A (the surface facing Z1) of the intermediate layer 16, and fixed (bonded) to the intermediate layer 16. The glass substrate 14 includes one surface 14A (the surface facing Z1) and the other surface 14B (the surface facing Z2), with one surface 14A in contact with the other surface 16B (the surface facing Z2) of the intermediate layer 16, and fixed (bonded) to the intermediate layer 16. Thus, the vehicle glass 1 is a laminated glass in which the glass substrate 12 and the glass substrate 14 are laminated together. However, the vehicle glass 1 is not limited to laminated glass; for example, it may be a configuration that includes only one of the glass substrate 12 and the glass substrate 14 (i.e., a single-pane glass). In this case, the intermediate layer 16 may not be provided. Furthermore, the intermediate layer 16 may contain a heat-generating film (PET substrate), a heating device, an antenna, a liquid crystal display device, a dimming device, an image projection layer, an emissive layer, a heat-reflective layer, and the like.

[0017] The thickness of the glass substrate 12 is preferably 1.8 mm or more and 3.0 mm or less, and more preferably 1.9 mm or more and 2.3 mm or less. By making the thickness of the glass substrate 12 within this range, it is possible to appropriately maintain the resistance performance against spalling and the like while suppressing an increase in weight and a decrease in formability. The thickness of the glass substrate 14 is preferably 0.3 mm or more and 2.3 mm or less, and more preferably 0.4 mm or more and 2.0 mm or less. If the thickness of the glass substrate 14 is thinner than this, handling during manufacturing and assembly becomes difficult. By making the thickness of the glass substrate 14 within this range, it is possible to appropriately maintain the followability to the intermediate layer 16. The thickness of the intermediate layer 16 is preferably 0.5 mm or more and 3 mm or less, and more preferably 0.7 mm or more and 1 mm or less. By making the thickness of the intermediate layer 16 within this range, it is possible to secure the safety performance required for laminated glass while suppressing an increase in weight and difficulty in handling during manufacturing and assembly. Hereinafter, when the glass substrates 12 and 14 are not distinguished, they are referred to as glass substrates. When the vehicle glass 1 is attached to a vehicle, the vehicle glass 1 may have a curved shape that is convex toward the outside of the vehicle. The bending shape from the peripheral portion to the central portion of the vehicle glass 1 may be a bending shape that is curved in only a single direction, a bending shape that is curved in two orthogonal directions, or a bending shape that is curved in three or more directions. The plate thickness of the vehicle glass 1 is not particularly limited, but is preferably 3 mm or more, more preferably 4 mm or more, still more preferably 4.5 mm or more, even more preferably 5 mm or more, and most preferably 6 mm or more. Also, the plate thickness of the vehicle glass 1 is preferably 10 mm or less, more preferably 9 mm or less, still more preferably 8 mm or less, and most preferably 7 mm or less. In the present embodiment, the upper limit value and the lower limit value can be appropriately combined. Further, when the vehicle glass 1 is laminated glass, the above plate thickness may be read as the total thickness of the laminated glass.

[0018] The light-shielding layer 18 is a layer that blocks visible light. The light-shielding layer 18 may be provided in a strip shape along the periphery of the vehicle glass 1. This suppresses the deterioration of aesthetics due to refraction of the glass substrates 12 and 14. As the light-shielding layer 18, for example, a ceramic light-shielding layer or a light-shielding film can be used. As the ceramic light-shielding layer, for example, a ceramic layer made of conventionally known materials such as a black ceramic layer can be used. As the light-shielding film, for example, a light-shielding polyethylene terephthalate (PET) film, a light-shielding polyethylene naphthalate (PEN) film, a light-shielding polymethyl methacrylate (PMMA) film, etc. can be used. The light-shielding layer 18 includes one surface 18A (the surface on the Z1 direction side) and the other surface 18B (the surface on the Z2 direction side). In the example of Figure 3, one surface 18A is in contact with and fixed to the other surface 14B of the glass substrate 14, but it is not limited to this. For example, the light-shielding layer 18 may be provided on the surface 12B of the glass substrate 12. In this case, the light-shielding layer 18 does not need to be provided on the glass substrate 14. In other words, the light-shielding layer 18 may be provided on the surface 14B of the glass substrate 14, on the surface 12B of the glass substrate 12, or on both the surface 14B and the surface 12B.

[0019] In this embodiment, the side of the vehicle glass 1 on which the light-shielding layer 18 is provided faces the interior side (Z2 direction side) and the glass substrate 12 faces the exterior side (Z1 direction side). However, it is not limited to this, and the light-shielding layer 18 may be provided on the exterior side of the vehicle V. If the vehicle glass 1 is made of laminated glass of glass substrates 12 and 14, the light-shielding layer 18 may be formed between the glass substrate 12 and the glass substrate 14. That is, the light-shielding layer 18 may be formed on, for example, the surface 12B or the surface 14A, or a part of the intermediate layer 16 may be the light-shielding layer 18. If a part of the intermediate layer 16 is the light-shielding layer 18, a part of the intermediate layer 16 may be colored with a dark pigment, or a layer containing a dark pigment may be provided in a part of the intermediate layer 16.

[0020] The glass member 10 has an opening 19 formed therethrough from the surface on the vehicle interior side (the surface 18B on the Z2 direction side) to the surface on the vehicle exterior side (the surface 12A on the Z1 direction side). An infrared transmission unit U is provided in the opening 19. That is, the vehicle glass 1 according to the present embodiment is a vehicle glass in which the infrared transmission unit U according to the present embodiment is provided in the opening 19. The infrared transmission unit U includes a transmission member 20 that transmits infrared rays and a frame member 30 provided at the peripheral edge of the transmission member 20. In the following description, the direction toward the geometric center when the transmission member 20 is viewed from the Z direction may be described as the radially inner side, and the direction away from the geometric center may be described as the radially outer side.

[0021] The transmission member 20 is disposed inside the opening 19 and transmits infrared rays. The transmission member 20 has a higher average transmittance of infrared rays with wavelengths from 8 μm to 13 μm than the glass member 10. The transmission member 20 has a higher average transmittance of infrared rays with wavelengths from 8 μm to 13 μm than the frame member 30. The average transmittance of the transmission member 20 for infrared rays with wavelengths from 8 μm to 13 μm is preferably 25% or more, more preferably 40% or more, still more preferably 50% or more, still more preferably 70% or more, and particularly preferably 85% or more. Also, the average transmittance of the transmission member 20 for infrared rays with wavelengths from 8 μm to 13 μm is preferably 100% or less. In order to make the average transmittance of infrared rays 85% or more, it is preferable to provide an antireflection film. By the average transmittance of infrared rays being within this numerical range, infrared rays can be appropriately transmitted, and the performance of the infrared camera CA1 can be fully exhibited. The transmittance of infrared rays can be measured, for example, by a Fourier transform infrared spectrometer (manufactured by Thermo Scientific, product name: Nicolet iS10).

[0022] The material of the transmission member 20 is not particularly limited, and examples thereof include ZnS, Ge, Si, chalcogenide glass, and the like. A preferable composition of the chalcogenide glass is, in atomic %, Ge + Ga: 7% to 25%, Sb: 0% to 35%, Bi: 0% to 20%, Zn: 0% to 20%, Sn: 0% to 20%, Si: 0% to 20%, La: 0% to 20%, S + Se + Te: 55% to 80%, Ti: 0.005% to 0.3%, Li + Na + K + Cs: 0% to 20%, F + Cl + Br + I: 0% to 20%. And this glass preferably has a glass transition point (Tg) of 140°C to 550°C.

[0023] It is more preferable that the transmission member 20 has at least one of Si and Ge as a main component. Here, the main component may refer to a content rate of 50% by mass or more with respect to the whole of the transmission member 20.

[0024] The transmission member 20 may be coated on the surface on the vehicle outer side (Z1 direction side) (surface 20A) or the surface on the vehicle inner side (Z2 direction side) (surface 20B). For example, an antireflection film may be provided on the surface 20A. As the antireflection film, an antireflection film of 3 to 12 layers is preferable, and the material is not particularly limited, but Ge, Si, ZnS, ZnSe, As ｘ S ｙ 、As ｘ Se ｙ 、metal oxides (Al ｘ O ｙ 、Bi ｘ O ｙ 、CeO ｘ 、CuO, HfO ｘ 、MgO, SiO, SiO ｘ 、NiO, TiO, TiO ｘ 、Ti ｘ O ｙ 、Y ｘ O ｙ 、ZrO ｘ ), hydrocarbon, diamond-like carbon (DLC), metal fluoride (MgF ｘ 、CaF ｘ 、SrF ｘ 、BaF ｘ 、PbF ｘ 、LaFｘ YF ｘ ) is preferable (x, y are any positive numbers). The layer on the Z1 side of the anti-reflective coating is preferably a film with a Mohs hardness of 7 or higher and high far-infrared transmittance, from the viewpoint of scratch resistance. The layer on the Z1 side of the anti-reflective coating is ZrO ｘ It is particularly preferable that it be a membrane.

[0025] The planar shape of the transparent member 20 is not particularly limited, but it is preferable that it be a plate-like shape that matches the shape of the opening 19. That is, for example, if the opening 19 is circular, it is preferable that the transparent member 20 be disc-shaped or cylindrical. Also, from the viewpoint of design, the surface shape of the transparent member 20 on the Z1 direction side may be processed to match the curvature of the outer surface shape of the glass substrate 12.

[0026] In the vehicle glass 1 of the first embodiment, the opening 19 on the Z1 direction side surface (surface 12A) has the same configuration as the opening 19 on the Z2 direction side surface (surface 18B), and it is preferable that the shape of the transparent member 20 is also the same as the area on the Z1 direction side surface and the Z2 direction side surface. In other words, there is no step on the inner wall of the opening 19, and the inner wall of the opening 19 extends along the thickness direction of the vehicle glass 1. By adopting such a configuration, the manufacturing of the glass member 10 and the transparent member 20 becomes easier. Furthermore, if the glass member 10 is laminated glass comprising a glass substrate 12 (Z1 direction side) and a glass substrate 14 (Z2 direction side), the opening 19 is formed by the overlapping of the opening 12a of the glass substrate 12 and the opening 14a of the glass substrate 14. In this case, the opening 12a of the glass substrate 12 should overlap with the opening 14a of the glass substrate 14, and a transparent member 20 sized to fit the opening 12a of the glass substrate 12 should be placed inside the opening 12a of the glass substrate 12.

[0027] The frame member 30 is positioned between the inner circumferential surface of the opening 19 of the glass member 10 and the transparent member 20. The frame member 30 holds the outer periphery of the transparent member 20 and is attached to the opening 19. The shape of the frame member 30 is not particularly limited, but if the transparent member 20 is disc-shaped, it is formed in a cylindrical shape and positioned on the periphery of the transparent member 20. The frame member 30 has a wall portion 32 positioned between the transparent member 20 and the glass member 10, a flange portion 34 formed on the Z2 direction side of the wall portion 32, and a base portion 36 formed on the Z2 direction side of the transparent member 20. The wall portion 32 is interposed between the transparent member 20 and the glass member 10. Viewed in the thickness direction (Z direction) of the transparent member 20, the base portion 36 overlaps with the outer periphery of the transparent member 20.

[0028] The frame member 30 may be composed of a single member or of multiple members. A frame member 30 composed of multiple members may include, for example, a first member including a wall portion 32 and a second member including a flange portion 34. A frame member 30 composed of multiple members may be composed of, for example, a first member on the Z1 direction side and a second member on the Z2 direction side. The frame member 30 may be composed of three or more members. In the first embodiment, the frame member 30 is composed of a single member including a wall portion 32, a flange portion 34 and a base portion 36.

[0029] The wall portion 32 is formed in a cylindrical shape that surrounds the peripheral edge of the transparent member 20. The outer surface of the wall portion 32 faces the inner surface of the opening 19 of the glass member 10. The inner surface of the wall portion 32 faces the outer end surface of the transparent member 20. The length of the wall portion 32 in the Z direction is greater than or equal to the total thickness of the glass member 10. The surface of the wall portion 32 on the Z1 direction side is exposed to the outside of the vehicle within the opening 19. The end of the wall portion 32 on the Z2 direction side is connected to the flange portion 34.

[0030] The flange portion 34 extends radially outward from the Z2-direction end of the wall portion 32. The flange portion 34 is provided around the entire circumference of the outer surface of the wall portion 32 and is ring-shaped. The flange portion 34 extends radially outward from the outer surface of the wall portion 32 beyond the inner surface of the opening 19 of the glass member 10. In other words, the outer dimensions of the flange portion 34 are larger than the opening 19. When the frame member 30 is attached to the glass member 10, the flange portion 34 is positioned on the Z2-direction side with respect to the Z2-direction surface of the glass member 10 (the surface 18B of the light-shielding layer 18) and faces the surface 18B in the Z direction. Adhesive 40 is provided between the flange portion 34 and the surface 18B. The frame member 30 is attached to the opening 19 of the glass member 10 by the adhesive 40 at the flange portion 34. For example, the adhesive 40 is formed in a ring shape around the entire circumference of the flange portion 34. This ensures watertightness between the inner surface of the opening 19 and the frame member 30.

[0031] The base portion 36 is located in the Z2 direction relative to the transparent member 20. The base portion 36 extends radially inward from the inner circumferential surface of the wall portion 32. The base portion 36 is an inner flange formed on the inner circumferential surface of the wall portion 32, and is, for example, ring-shaped. The base portion 36 may not be ring-shaped, and may be provided locally at one or more locations in the circumferential direction of the wall portion 32, or it may be provided intermittently (discontinuously) over the entire circumferential direction of the wall portion 32. In the example shown in Figure 3, the base portion 36 is provided from the surface 20B side of the transparent member 20 to the Z2 direction side surface of the flange portion 34, but it may also be provided so as to protrude radially inward from a part of the inner circumferential surface of the wall portion 32.

[0032] The constituent material of the frame member 30 is not particularly limited. At least a portion of the frame member 30 may be made of resins such as ABS (Acrylonitrile butadiene styrene) resin, AES (Acrylonitrile ethylene styrene) resin, rigid polyvinyl chloride (rigid PVC), polystyrene (PS), polyamide (PA), polycarbonate (PC), polyphenylene sulfide (PPS), and polytetrafluoroethylene (PTFE). When the frame member 30 is made of a thermoplastic resin such as ABS, AES, or rigid polyvinyl chloride, a molding method such as injection molding can be applied.

[0033] At least a portion of the frame member 30 may be formed from an elastomer such as ethylene propylene monomer (EPDM), flexible polyvinyl chloride (flexible PVC), thermoplastic polyvinyl elastomer (TPVC), thermoplastic polyethylene elastomer (TPE), thermoplastic polyamide elastomer (TPAE), fluorinated ethylene propylene (FEP), vinylidene fluoride fluororubber (FKM), tetrafluoroethylene-purple vinyl ether fluororubber (FFKM), or silicone rubber. Here, FKM and FFKM are elastomers defined in ASTM:D1418. By using an elastomer as a constituent material of the frame member 30, the watertightness between the glass member 10 and the permeable member 20 can be improved.

[0034] Furthermore, at least a portion of the frame member 30 may be formed from a fluororesin such as ETFE (Ethylene tetrafluoroethylene) or PFA (Perfluoroalkoxy alkanes). ETFE is a copolymer having units derived from ethylene and units derived from tetrafluoroethylene. ETFE may further contain units derived from monomers having adhesive functional groups as a third component. PFA is a copolymer having units derived from tetrafluoroethylene and units derived from perfluoro(alkyl vinyl ether). PFA may further contain units derived from monomers having adhesive functional groups as a third component. ETFE and PFA are preferred as constituent materials for the frame member 30 due to their excellent moldability, and the adhesion is further improved by including an adhesive third component.

[0035] The monomer having adhesive functional groups is preferably a monomer having a carboxyl group, an acid anhydride group, or a carboxylic acid halide group, and more preferably an unsaturated dicarboxylic acid anhydride. Examples of unsaturated dicarboxylic acid anhydrides include itaconic anhydride, citraconic anhydride, 5-norbornene-2,3-dicarboxylic acid anhydride (Hymic anhydride), and maleic anhydride. The monomer having adhesive functional groups may have one adhesive functional group alone or two or more adhesive functional groups.

[0036] ETFE may optionally contain units derived from ethylene, TFE, and monomers other than monomers having adhesive functional groups. Examples of other monomers include fluoroolefins (excluding tetrafluoroethylene) and fluoro(alkyl vinyl ethers). PFA may optionally contain units derived from TFE, perfluoro(alkyl vinyl ethers), and monomers other than monomers having adhesive functional groups. Examples of other monomers include fluoroolefins (excluding tetrafluoroethylene).

[0037] Furthermore, the frame member 30 is preferably black in color. This improves the aesthetic appearance.

[0038] The adhesive 40 provided between the frame member 30 and the glass member 10 is formed from, for example, an adhesive such as a urethane adhesive or a modified silicone adhesive. This improves load-bearing capacity, heat resistance, and cold resistance, and improves adhesive strength and shear strength.

[0039] The transparent member 20 is attached to the opening 19 via the frame member 30. Preferably, the Z1-direction side surface (surface 30A) of the frame member 30 is formed flush with (continuously with) the Z1-direction side surface (surface 20A) of the transparent member 20 and the Z1-direction side surface (surface 12A) of the glass substrate 12. In other words, the Z1-direction side surface 30A of the frame member 30 is attached so as to be continuous with the Z1-direction side surface 20A of the transparent member 20 and the surface 12A of the glass substrate 12. The step difference at the boundary between the Z1-direction side surface 20A of the transparent member 20 and the Z1-direction side surface 30A of the frame member 30 is preferably 0.3 mm or less, more preferably 0.2 mm or less, even more preferably 0.15 mm or less, and still preferably 0.1 mm or less. Furthermore, the step at the boundary between the Z1-direction surface 30A of the frame member 30 and the Z1-direction surface 12A of the glass member 10 is preferably 1.0 mm or less, more preferably 0.5 mm or less, more preferably 0.3 mm or less, more preferably 0.15 mm or less, and even more preferably 0.1 mm or less. By ensuring that the Z1-direction surface 30A of the frame member 30 is continuous with the Z1-direction surface 20A of the transparent member 20 and the surface 12A of the glass substrate 12, the wiping effect of the wiper can be suppressed. In addition, by ensuring that the surface 30A of the frame member 30 is continuous with the surface 20A of the transparent member 20 and the surface 12A of the glass substrate 12, the design of the vehicle V is not impaired, and the accumulation of sand and dust between the frame member 30 and the glass member 10, and between the frame member 30 and the transparent member 20 can be suppressed.

[0040] The step difference can be measured, for example, by using a laser displacement meter (Keyence Corporation, inline profile measuring instrument: LJ-X8200) to irradiate a laser into the area enclosed by a line segment 10 mm radially inward from the inner edge of the surface 30A of the frame member 30 and a line segment 10 mm radially outward from the outer edge of the surface 30A of the frame member 30, and then measuring the step difference profile obtained.

[0041] As shown in Figure 2, the vehicle glass 1 has a light-transmitting region A1 and a light-blocking region A2. The light-transmitting region A1 is the central part of the vehicle glass 1 when viewed from the Z direction. The light-transmitting region A1 is the region that ensures the driver's field of view. The light-transmitting region A1 is the region that transmits visible light. The light-blocking region A2 is the region that is formed around the light-transmitting region A1 when viewed from the Z direction. The light-blocking region A2 is the region that blocks visible light and ultraviolet light. Within the light-blocking region A2a, which is the part on the upper edge 1a side of the light-blocking region A2, a far-infrared transmitting region B and a visible light transmitting region C are formed.

[0042] As shown in Figures 3 and 4, the light-shielding region A2 is formed by providing a light-shielding layer 18 on the glass member 10. In other words, the light-shielding region A2 is the region in which the glass member 10 is equipped with the light-shielding layer 18. Specifically, the light-shielding region A2 is the region in which the glass substrate 12, the intermediate layer 16, the glass substrate 14, and the light-shielding layer 18 are laminated. On the other hand, the light-transmitting region A1 is the region in which the glass member 10 is not equipped with the light-shielding layer 18. Specifically, the light-transmitting region A1 is the region in which the glass substrate 12, the intermediate layer 16, and the glass substrate 14 are laminated, but the light-shielding layer 18 is not laminated.

[0043] The far-infrared transmission region B is a region that transmits far-infrared rays and is the region in which the far-infrared camera CA1 is installed. The far-infrared camera CA1 is installed in a position that overlaps with the far-infrared transmission region B when viewed from the optical axis direction of the far-infrared camera CA1. The region in which the opening 19 is formed and the far-infrared transmission unit U is installed is the far-infrared transmission region B. In other words, the far-infrared transmission region B is the region in which the opening 19 and the far-infrared transmission unit U, which is placed inside the opening 19, are installed. The far-infrared transmission region B does not have a light-shielding layer 18. That is, in the far-infrared transmission region B, the glass substrate 12, the intermediate layer 16, the glass substrate 14, and the light-shielding layer 18 are not provided, and the far-infrared transmission unit U is installed in the formed opening 19.

[0044] The visible light transmission region C is a region that transmits visible light and is the region in which the visible light camera CA2 is installed. The visible light camera CA2 is installed in a position that overlaps with the visible light transmission region C when viewed from the optical axis direction of the visible light camera CA2. As shown in Figure 4, the visible light transmission region C, like the light transmission region A1, is a region in the Z direction in which the glass member 10 does not have a light-shielding layer 18. That is, the visible light transmission region C is a region in which the glass substrate 12, the intermediate layer 16, and the glass substrate 14 are laminated, and the light-shielding layer 18 is not laminated.

[0045] As described above, the light-shielding region A2 has a far-infrared transmitting region B and a visible light transmitting region C. Therefore, the light-shielding region A2 blocks far-infrared rays in areas other than where the far-infrared transmitting region B is formed, and blocks visible light in areas other than where the visible light transmitting region C is formed. The far-infrared transmitting region B and the visible light transmitting region C are surrounded by a light-shielding region A2a. This surrounding light-shielding region A2a is preferable because it protects the various sensors from sunlight. It is also preferable from a design standpoint because the wiring of the various sensors becomes invisible from outside the vehicle. The position where the far-infrared transmitting region B is formed is not limited to within the light-shielding region A2, but can be any position.

[0046] As shown in Figure 2, the far-infrared transmitting region B is formed near the upper edge 1a of the vehicle glass 1 in the Y direction and near the center of the vehicle glass 1 in the X direction. That is, the opening 19 and the transmitting member 20 are formed near the upper edge 1a of the vehicle glass 1 in the Y direction and near the center of the vehicle glass 1 in the X direction. Furthermore, the visible light transmitting region C is preferably located near the upper edge 1a in the Y direction and near the far-infrared transmitting region B, similar to the far-infrared transmitting region B.

[0047] Specifically, the center of the far-infrared transmission region B as viewed from the Z direction is defined as the center point OB, and the center of the visible light transmission region C as viewed from the Z direction is defined as the center point OC. When viewed from the Z direction, the shortest distance between the far-infrared transmission region B (the opening 19 described later) and the visible light transmission region C is defined as distance L. Preferably, distance L is greater than 0 mm and 100 mm or less, and more preferably 10 mm or more and 80 mm or less. By positioning the visible light transmission region C within this range relative to the far-infrared transmission region B, it is possible to capture images at close range with the far-infrared camera CA1 and the visible light camera CA2, while suppressing the amount of transmission distortion in the visible light transmission region C, allowing the visible light camera CA2 to capture images appropriately. By capturing images at close range with the far-infrared camera CA1 and the visible light camera CA2, the load on the computational processing of the data obtained from each camera is reduced, and the routing of power and signal cables is also optimized.

[0048] As shown in Figure 2, it is preferable that the visible light transmission region C and the far-infrared transmission region B are located side by side in the X direction. That is, it is preferable that the visible light transmission region C is not located on the Y-direction side of the far-infrared transmission region B, but is aligned with the far-infrared transmission region B in the X direction. By arranging the visible light transmission region C side by side with the far-infrared transmission region B in the X direction, the parallax between the far-infrared camera CA1 and the visible light camera CA2 can be minimized, improving the object recognition rate of the target object, and the visible light transmission region C can be positioned near the upper edge 1a. Therefore, the driver's field of view in the light-transmitting region A1 can be appropriately secured. Note that being located side by side in the X direction means being within a range of ±50 mm with respect to the Y direction.

[0049] Thus, in this embodiment, the far-infrared transmitting region B (opening 19) is formed within the light-shielding region A2a, which is the portion of the light-shielding region A2 that is on the upper edge 1a side of the center point O (for example, in the vicinity of the upper edge 1a). However, the far-infrared transmitting region B (opening 19) is not limited to being formed within the light-shielding region A2a, but may be formed in any region on the surface of the glass member 10. For example, the far-infrared transmitting region B (opening 19) may be formed at a position on the lower edge 1b side of the center point O of the glass member 10 (for example, in the vicinity of the lower edge 1b). The same applies to the visible light transmitting region C.

[0050] (Rigidity of the intermediate layer) Next, the details of the configuration of the intermediate layer 16 will be described. Figure 5 is an enlarged cross-sectional view of the area around the opening of the glass member in the vehicle glass.

[0051] As shown in Figures 2 and 5, the glass member 10 of the vehicle glass 1 has a first region H and a second region S defined. The first region H is a predetermined range of area including the peripheral edge 19C of the opening 19. The first region H refers to the range from the peripheral edge 19C of the opening 19 to a distance Hd. The peripheral edge 19C of the opening 19 refers to the surface of the inner wall of the opening 19, or in other words, the end face of the glass member 10 on the opening 19 side. The distance Hd is preferably 5 mm or more and 50 mm or less, more preferably 10 mm or more and 45 mm or less, and even more preferably 15 mm or more and 40 mm or less. The second region S is a predetermined range of area separated from the first region H. The second region S is defined, for example, as the area including the edge opposite the edge of the glass member 10 that is closest to the opening 19 in a plan view. The second region S refers to the range from the edge opposite the edge of the glass member 10 closest to the opening 19 to a distance Sd. The distance Sd is preferably 5 mm or more and 50 mm or less, more preferably 10 mm or more and 45 mm or less, and even more preferably 15 mm or more and 40 mm or less. In the first embodiment, since the opening 19 is provided in the light-shielding region A2a, which is the part on the upper edge 1a side of the vehicle glass 1, the second region S refers to the range from the lower edge 1b of the vehicle glass 1 to a distance Sd.

[0052] The intermediate layer 16 is provided such that the stiffness in the first region H is higher than the stiffness in the second region S. When a frequency of 1 Hz is applied to a sample with a width of 5 mm, a sample length of 12 mm, and at 23°C, the tensile storage spring constant k of the intermediate layer 16 in the first region H is... Ｈ The storage spring constant k in the tensile direction of the intermediate layer 16 of the first region H is preferably 5 N / mm or more, more preferably 7 N / mm or more, and even more preferably 10 N / mm or more. Furthermore, when a frequency of 1 Hz is applied in a 23°C environment with a sample width of 5 mm and a sample length of 12 mm, the storage spring constant k in the tensile direction of the intermediate layer 16 of the first region H is Ｈ The value is preferably 10,000 N / mm or less, more preferably 1,000 N / mm or less, and even more preferably 500 N / mm or less. In this embodiment, the upper and lower values ​​can be combined as appropriate.

[0053] Storage spring constant k in the tensile direction of the intermediate layer 16 of the first region H Ｈ The storage spring constant k of the second region S. Ｓ The difference (k) Ｈ -k Ｓ The storage spring constant k of the second region S. Ｓ Ratio to (k) Ｈ -k Ｓ ) / k Ｓ It is preferably +20% or more, more preferably +40% or more, even more preferably +60% or more, even more preferably +80% or more, and particularly preferably +100% or more. The storage spring constant k in the tensile direction of the intermediate layer 16 of the first region H Ｈ The storage spring constant k of the second region S. Ｓ The difference (k) Ｈ -k Ｓ The storage spring constant k of the second region S. Ｓ Ratio to (k) Ｈ -k Ｓ ) / k Ｓ It is preferable that the value is +200% or less, more preferably +180% or less, even more preferably +160% or less, and particularly preferably +140% or less. In this embodiment, the upper and lower numerical values ​​can be combined as appropriate.

[0054] Furthermore, the storage spring constant k in the tensile direction of the intermediate layer 16 of the first region H. Ｈ The storage spring constant k of the second region S for Ｓ ratio k Ｓ / k Ｈ The ratio (storage spring constant of the second region S / storage spring constant of the first region H) is preferably greater than 0% and 90% or less, more preferably between 10% and 80%, and even more preferably between 20% and 70%.

[0055] The storage spring constant is measured using a viscoelasticity measuring instrument (A&D Company, Limited's "Reovibron Dynamic Viscoelasticity Automatic Measuring Instrument") on a strip sample cut from the intermediate layer 16. The measurement conditions are as follows: • Sample width: 5 mm • Sample length: 12 mm • Measurement mode: Tensile mode • Test temperature: 23 ± 1 °C • Frequency: 1 Hz • Average load (static tension): 5 gf • Deflection amplitude: ± 10 μm

[0056] As shown in Figure 5, in the first embodiment, the intermediate layer 16 has a thickness Ht in the first region H greater than the thickness St in the second region S. By making the thickness Ht of the intermediate layer 16 in the first region H greater than the thickness St in the second region S, the strength near the opening 19 can be improved. The thickness Ht of the intermediate layer 16 in the first region H is preferably 0.76 mm or more, more preferably 0.8 mm or more, and even more preferably 0.9 mm or more. Furthermore, the thickness Ht of the intermediate layer 16 in the first region H is preferably 3 mm or less, more preferably 2.5 mm or less, and even more preferably 2 mm or less. For example, the intermediate layer 16 may be formed in a wedge shape in cross-section such that the thickness Ht and St decrease from one edge side (upper edge 1a side) to the other edge side (lower edge 1b side) of the vehicle glass 1. Alternatively, the intermediate layer 16 may be formed such that its thickness Ht and St decrease in the direction away from the opening 19, starting from the peripheral edge 19C of the opening 19. In this embodiment, the upper and lower limits can be combined as appropriate. The overall thickness of the glass member 10 may also increase as the thickness Ht of the intermediate layer increases.

[0057] (Camera Unit) Next, the configuration of the camera unit 100 of this embodiment, more specifically, an example of the configuration when the far-infrared camera CA1 is attached to the vehicle glass 1 will be described. Figure 6 is a diagram showing an example of the configuration when the far-infrared camera is attached to the vehicle glass. The camera unit 100 comprises a vehicle glass 1 including a glass member 10, a transparent member 20 and a frame member 30, a far-infrared camera CA1 and a visible light camera CA2.

[0058] The vehicle glass 1 is mounted on the vehicle V so as to be inclined with respect to the vertical direction. When mounted on the vehicle V, the Y-direction of the vehicle glass 1 is inclined with respect to the direction aligned with the downward vertical direction. When mounted on the vehicle V, the Z-direction of the vehicle glass 1 is horizontal and inclined with respect to the direction from the front to the rear of the vehicle V. However, the vehicle glass 1 is not limited to being mounted on the vehicle V so as to be inclined with respect to the vertical direction; for example, when mounted on the vehicle V, the Y-direction of the vehicle glass 1 may be aligned with the vertical direction, and the Z-direction of the vehicle glass 1 may be aligned with the horizontal direction. In the following description, unless otherwise specified, the vehicle glass 1 is described in the state in which it is mounted on the vehicle V.

[0059] The type of far-infrared camera CA1 is not particularly limited, and any known far-infrared camera can be used. The far-infrared camera CA1 is sensitive to far-infrared rays with wavelengths of at least 8 μm to 13 μm. The far-infrared camera CA1 is installed on the interior side (Z2 direction side) of the vehicle glass 1 than the transparent member 20 of the vehicle glass 1 so that it can capture an external thermal image through the far-infrared transmission region B of the vehicle glass 1. The far-infrared camera CA1 is installed inside the vehicle V (inside the vehicle) at a position facing the far-infrared transmission region B. As shown in Figure 6, the far-infrared camera CA1 is attached to the vehicle glass 1 by, for example, a bracket 50. The far-infrared camera CA1 is usually installed so that the optical axis LX is approximately horizontal.

[0060] The type of visible light camera CA2 is not particularly limited, and any known visible light camera can be used. The visible light camera CA2 is installed on the interior side (Z2 direction side) of the vehicle glass 1's glass member 10 so that it can capture images of the outside through the visible light transmission area C of the vehicle glass 1. The visible light camera CA2 is installed inside the vehicle V (inside the vehicle) at a position facing the visible light transmission area C. It is preferable that the visible light camera CA2 is mounted so that the optical axis LX of the far-infrared camera CA1 and the optical axis of the visible light camera CA2 are approximately parallel. Approximately parallel is a concept that includes not only cases where these optical axes are perfectly parallel, but also cases where they are slightly deviated from parallel by an error margin. By doing so, the optical axis LX of the far-infrared camera CA1 and the center of the field of view of the visible light camera CA2 almost coincide, which is preferable when combining images obtained from these cameras for information processing.

[0061] (Wiper) Figure 7 is a schematic plan view showing an example configuration when a vehicle glass is assembled to a vehicle and wiped with a wiper. The wiper 60 is a wiper blade that wipes the outer surface (Z1 direction side) (surfaces 12A, 20A, 30A) of the vehicle glass 1. The wiper 60 wipes the surface of the wiping area W by moving back and forth along the surface of the vehicle glass 1. For example, the base end of the wiper 60 is supported near the lower edge 1b of the vehicle glass 1, and it swings around the base end and moves back and forth in a roughly fan-shaped area.

[0062] The wiper 60 generates a wiping noise when it reverses direction. Additionally, when the wiper 60 passes over the frame member 30, it deforms slightly due to the small steps on the surfaces 12A, 30A, and 20A, generating a striking noise. To make this wiping and striking noise less noticeable to passengers, it is preferable that the reversal position PW where the reversal direction occurs and the outer edge of the transparent member 20 are close together. Specifically, the reversal position PW of the wiper 60, i.e., the end of the wiping range W opposite to the vicinity of the lower edge 1b, preferably has a shortest distance LW from the outer edge of the transparent member 20 of 30 cm or less, more preferably 20 cm or less, and even more preferably 10 cm or less. This allows the wiping noise from the difference in the reversal direction and the striking noise when passing over the frame member 30 to overlap, making the wiping and striking noises less noticeable.

[0063] On the other hand, in order to reliably ensure wiping performance, the reverse position PW of the wiper 60 is preferably such that the shortest distance LW from the outer edge of the transparent member 20 is 3 cm or more, and more preferably 5 cm or more.

[0064] (Second Embodiment) Figure 8 is an enlarged cross-sectional view of the area around the opening of the glass member in the vehicle glass according to the second embodiment. The vehicle glass 1 according to the second embodiment differs from the first embodiment in that the intermediate layer 16 has a first portion 16D and a second portion 16E.

[0065] As shown in Figure 8, the first portion 16D is the portion of the first region H from the peripheral edge 19C of the opening 19 to a distance Hd. The second portion 16E is the portion other than the first region H, including at least the second region S. The intermediate layer 16 has a stiffness in the first portion 16D that is higher than the stiffness in the second portion 16E. In the second embodiment, the material of the first portion 16D is made of a material with higher stiffness than the material of the second portion 16E. By using a material with higher stiffness in the intermediate layer 16 of the first region H (first portion 16D) than in the intermediate layer 16 of the second region S (second portion 16E), the strength near the opening 19 can be improved.

[0066] For the first part 16D, for example, polyvinyl butyral modified material, ethylene-vinyl acetate copolymer material, urethane resin material, vinyl chloride resin material, ionomer resin, cycloolefin polymer, and polymethyl methacrylate can be used. For the second part 16E, for example, the materials listed as the intermediate layer 16 of the first embodiment, such as polyvinyl butyral modified material, ethylene-vinyl acetate copolymer material, urethane resin material, vinyl chloride resin material, ionomer resin, cycloolefin polymer, and polymethyl methacrylate can be used.

[0067] The boundary between the first portion 16D and the second portion 16E is preferably within the light-shielding region A2a where the light-shielding layer 18 is provided. That is, in the second embodiment, the first region H is preferably included within the light-shielding region A2a. This makes it possible to suppress the deterioration of aesthetics due to the boundary between the first portion 16D and the second portion 16E, which are made of different materials.

[0068] (Third Embodiment) Figure 9 is an enlarged cross-sectional view of the area around the opening of the glass member in the vehicle glass according to the third embodiment. The vehicle glass 1 according to the third embodiment differs from the first embodiment in that a step is provided on the inner wall of the opening 19.

[0069] As shown in Figure 9, in the third embodiment of the vehicle glass 1, the opening 19 on the Z1-direction side surface (surface 12A) has the same configuration as the opening 19 on the Z2-direction side surface (surface 18B), and the opening 12a of the glass substrate 12 and the opening 14a of the glass substrate 14 are formed by overlapping. That is, the peripheral edge 12C of the glass substrate 12 on the opening 19 side and the peripheral edge 14C of the glass substrate 14 on the opening 19 side are located at approximately the same position in a plan view. Similarly, the peripheral edges 12C and 14C of the glass substrates 12 and 14 on the opening 19 side and the peripheral edge 18C of the light-shielding layer 18 on the opening 19 side are located at approximately the same position when viewed from the Z direction. Here, "approximately the same" is a concept that includes not only cases where their shapes and positions are completely identical, but also cases where they deviate slightly from being identical to the extent of an error.

[0070] In contrast, in the third embodiment, the peripheral edge 16C of the intermediate layer 16 on the opening 19 side protrudes toward the center of the opening 19. In other words, the peripheral edge 16C of the intermediate layer 16 is located radially inward (towards the center of the opening 19) than the peripheral edges 12C, 14C of the glass substrates 12, 14 and the peripheral edge 18C of the light-shielding layer 18. The peripheral edge 16C of the intermediate layer 16 may be provided flush (continuously) with the peripheral edges 12C, 14C of the glass substrates 12, 14 and the peripheral edge 18C of the light-shielding layer 18.

[0071] The intermediate layer 16 is bonded to the surface 12B side of the glass substrate 12, including the peripheral edge 12C, and to the surface 14A side of the glass substrate 14, including the peripheral edge 14C. In other words, since at least the intermediate layer 16 is not recessed radially outward from the peripheral edges 12C and 14C of the glass substrates 12 and 14, the glass substrates 12 and 14 can be reinforced up to the peripheral edges 12C and 14C.

[0072] The amount D of the protrusion of the peripheral edge 16C of the intermediate layer 16 from the peripheral edge 12C, 14C of the glass substrates 12, 14 is preferably 0 mm or more, and more preferably greater than 0 mm. The amount of protrusion D is preferably 5 mm or less, more preferably 3 mm or less, and more preferably 2 mm or less. The amount of protrusion D is preferably 0 mm or more and 5 mm or less, more preferably 0 mm or more and 3 mm or less, and more preferably 0 mm or more and 2 mm or less. The overall thickness T of the glass member 10 is preferably greater than 0 mm, more preferably 2 mm or more, and more preferably 3 mm or more. The overall thickness T of the glass member 10 is preferably 10 mm or less, more preferably 7 mm or less, and more preferably 5 mm or less. In this embodiment, the upper limit and lower limit can be combined as appropriate. Also, the ratio D / T to the overall thickness T of the glass member 10 is preferably 0% or more, and more preferably greater than 0%. The ratio D / T is preferably 100% or less, more preferably 70% or less, and even more preferably 50% or less. The ratio D / T is preferably 0% or more and 100% or less, more preferably 0% or more and 70% or less, more preferably 0% or more and 50% or less, and even more preferably greater than 0% and 50% or less.

[0073] (Fourth Embodiment) Figure 10 is an enlarged cross-sectional view of the area around the opening of the glass member in the vehicle glass according to the fourth embodiment. The vehicle glass 1 according to the fourth embodiment differs from the first embodiment in that the intermediate layer 16 is a multilayer acoustic intermediate layer.

[0074] As shown in Figure 10, the vehicle glass 1 of the fourth embodiment is a multilayer acoustic intermediate layer including a first normal layer 161, a second normal layer 162, and a sound insulation layer 163. The sound insulation layer 163 is sandwiched between the first normal layer 161 and the second normal layer 162. The sound insulation performance of the sound insulation layer 163 is higher than that of the first normal layer 161 and the second normal layer 162. The level of sound insulation performance is defined by the magnitude of the loss coefficient measured by the mechanical impedance method (MIM) in accordance with ISO 16940 for a test piece of glass diaphragm on a flat plate with a length of 300 mm, a width of 25 mm, and a thickness of 2 mm.

[0075] The first normal layer 161 and the second normal layer 162 and the sound insulation layer 163 have different glass transition temperatures. The glass transition temperatures of the first normal layer 161 and the second normal layer 162 are preferably 15°C or higher. The glass transition temperature of the sound insulation layer 163 is preferably less than 15°C.

[0076] The shear modulus of the sound insulation layer 163 is preferably at least approximately 50% smaller, preferably approximately twice as small, more preferably approximately five times smaller, and even more preferably approximately ten times smaller than the shear modulus of the first normal layer 161 and the second normal layer 162 at 20°C. The shear modulus of the first normal layer 161 and the second normal layer 162 is preferably approximately the same as the shear modulus of the sound insulation layer 163.

[0077] The first normal layer 161, the second normal layer 162, and the sound insulation layer 163 can be, for example, polyvinyl butyral (PVB) modified material, ethylene-vinyl acetate copolymer (EVA), polymethyl methacrylate (PMMA), polycarbonate (PC), polystyrene (PS), polyvinyl chloride (PVC), polyamide (PA), polyetherimide (PEI), polyethylene terephthalate (PET), polyurethane (PU), acrylonitrile butadiene styrene copolymer resin (ABS), styrene acrylonitrile copolymer (SAN), styrene methyl methacrylate copolymer (SMMA) and any mixture thereof, crosslinked resin, ionoplast, ionomer, etc. It is preferable that they contain PVB, EVA, or PU, and more preferably that they contain PVB. The compositions of the first normal layer 161 and the second normal layer 162 are preferably the same. The first normal layer 161, the second normal layer 162, and the sound insulation layer 163 preferably further contain a plasticizer.

[0078] In the fourth embodiment shown in Figure 10, the intermediate layer 16 is a multilayer acoustic intermediate layer in which three layers are laminated: a first normal layer 161, a sound insulation layer 163, and a second normal layer 162. However, the normal layers and sound insulation layers 163 may be laminated alternately in four or more layers.

[0079] Furthermore, it is preferable that the intermediate layer 16 is provided such that the sound insulation performance in the first region H is higher than the sound insulation performance in the second region S. For example, the sound insulation performance in the first region H may be made higher than the sound insulation performance in the second region S by making the thickness of the sound insulation layer 163 of the intermediate layer 16 in the first region H greater than the thickness of the sound insulation layer 163 of the intermediate layer 16 in the second region S.

[0080] (Fifth Embodiment) Figure 11 is an enlarged cross-sectional view of the area around the opening of the glass member in the vehicle glass according to the fifth embodiment. In the vehicle glass 1 according to the fifth embodiment, the thickness of the sound insulation layer 163 is different from that of the fourth embodiment.

[0081] In other words, in the fourth embodiment, the thicknesses of the first normal layer 161, the second normal layer 162, and the sound insulation layer 163 are formed to decrease in the direction away from the opening 19, starting from the peripheral edge 19C of the opening 19. The thicknesses of the first normal layer 161 and the second normal layer 162 may be constant. Also, the overall thickness of the glass member 10 may increase as the thickness of the sound insulation layer 163 increases.

[0082] (Modification) The vehicle glass 1 according to the embodiment is not limited to the embodiment described above. In the above embodiment, an example was shown in which the opening 19, the transparent member 20, and the frame member 30 are circular in shape when viewed from above, but the planar shape of the opening 19, the transparent member 20, and the frame member 30 is not particularly limited. The opening 19, the transparent member 20, and the frame member 30 may be elliptical in shape when viewed from above. The circular shape shown in the above embodiment can also be said to be an example in which the length of the major axis and the length of the minor axis are equal in an ellipse. Furthermore, the opening 19, the transparent member 20, and the frame member 30 may be rectangular, square, trapezoidal, rhombus, or other quadrilateral in shape when viewed from above, or they may be a so-called oval shape (rounded rectangle), or they may be a polygon other than a quadrilateral, such as a triangle, pentagon, or hexagon, or they may be a star or a gear shape. Thus, the planar shape of the opening 19, the transparent member 20, and the frame member 30 is arbitrary. In other words, the planar shape of the far-infrared transmission region B of the vehicle glass 1 is arbitrary. Similarly, the planar shape of the visible light transmission region C of the vehicle glass 1 is arbitrary.

[0083] Figure 12 is an enlarged cross-sectional view of the area around the opening of a glass member in a modified vehicle glass. In the modified example, the inner diameter of the opening 19 (the diameter of the peripheral edge 19C) is not constant in the Z direction. That is, the inner diameter of the opening 19 differs at different positions in the Z direction, and it can be said that the inner diameters at at least two different positions in the Z direction are different from each other. In other words, the opening area of ​​the opening 19 is not constant in the Z direction, and the opening area of ​​the opening 19 differs at different positions in the Z direction. Because the inner diameter is not constant in this way, the wedge effect prevents the transparent member 20 (frame member 30) from coming out of the opening 19, thereby suppressing displacement of the transparent member 20 in the Z direction.

[0084] The opening 19 may have any shape in which the inner diameter is not constant in the Z direction, but as shown in Figure 12, in the modified example, the inner diameter increases as it moves toward the Z2 direction. More specifically, the opening 19 has a shape in which the inner diameter increases as it moves toward the Z2 direction throughout its entire length, from the end on the Z1 side (the location of surface 12A) to the end on the Z2 side (the location of surface 18B). However, it is not limited to this, and the opening 19 may have a shape in which the inner diameter increases as it moves toward the Z2 direction only in a portion of the section from the end on the Z1 side to the end on the Z2 side. By increasing the diameter toward the Z2 direction in this way, the wedge effect can be used to appropriately suppress the shifting of the transparent member 20 (frame member 30) toward the Z1 direction from the opening 19. In the further modified example, since the flange portion 34 of the frame member 30 is bonded to the surface 18B of the glass member 10 via adhesive 40, the shifting of the transparent member 20 (frame member 30) toward the Z1 direction can be suppressed.

[0085] In another modified version, the shape of the wall portion 32 of the frame member 30 is made to conform to the shape of the opening 19. That is, the outer diameter of the wall portion 32 is not constant in the Z direction. In other words, the outer diameter of the frame member 30 differs at different positions in the Z direction, and it can be said that the outer diameters at at least two different positions in the Z direction are different from each other. To put it another way, the area of ​​the region surrounded by the periphery of the outer surface of the wall portion 32 is not constant in the Z direction, and differs at different positions in the Z direction. Because the outer diameter is not constant in this way, the wedge effect prevents the permeable member 20 (frame member 30) from slipping out of the opening 19, and thus prevents the permeable member 20 from shifting in the Z direction.

[0086] (Effects of the Disclosure) The vehicle glass 1 according to the first aspect of the Disclosure comprises a glass member 10 formed by laminating two glass substrates 12, 14 and an intermediate layer 16 located between the glass substrates 12, 14, thereby forming an opening 19 that penetrates from the surface 12A on the first direction side (Z1 direction side) to the surface 18B on the second direction side (Z2 direction side) opposite to the first direction side, and a transparent member 20 disposed within the opening 19 that transmits far-infrared rays, wherein the rigidity of the intermediate layer 16 in the first region H including the peripheral edge of the opening 19 is higher than the rigidity in the second region S separated from the first region H. By increasing the rigidity of the intermediate layer 16 in the first region H including the peripheral edge of the opening 19, which could be a weak point in terms of strength, the vehicle glass 1 according to the first aspect can suppress a decrease in the strength of the glass member 10 near the opening 19. Therefore, deformation of the glass member 10 when subjected to loads such as impact can be suppressed, and cracking and penetration can be suppressed.

[0087] The vehicle glass 1 according to the second aspect of this disclosure is the vehicle glass 1 according to the first aspect, wherein the storage spring constant in the tensile direction of the intermediate layer 16 of the first region H is 5 N / mm or more and 10,000 N / mm or less when a frequency of 1 Hz is applied in a 23°C environment with a sample width of 5 mm and a sample length of 12 mm. By setting the storage spring constant of the intermediate layer 16 of the first region H in such a range, the vehicle glass 1 according to the second aspect can improve the strength near the opening 19 while suppressing a decrease in pedestrian protection performance.

[0088] A vehicle glass 1 according to a third aspect of this disclosure is a vehicle glass 1 according to the first or second aspect, wherein, with a sample width of 5 mm, a sample length of 12 mm, and under conditions of 23°C, when a frequency of 1 Hz is applied, the storage spring constant in the tensile direction in the intermediate layer 16 of the first region H is k. Ｈ The storage spring constant k in the tensile direction in the intermediate layer 16 of the second region S. ｓ The difference (k) Ｈ -k Ｓ The storage spring constant k of the second region S. Ｓ Ratio to (k) Ｈ -k Ｓ ) / k ＳThis is in the range of +20% to +200%. The vehicle glass 1 according to the third embodiment can improve the strength near the opening 19 while suppressing a decrease in pedestrian protection performance by setting the difference in the storage spring constant of the intermediate layer 16 between the first region H and the second region S to this range.

[0089] The vehicle glass 1 according to the fourth aspect of this disclosure is the vehicle glass 1 according to any of the first to third aspects, wherein the first region H is within a range of 50 mm or less from the peripheral edge of the opening 19. By making the first region H such a range, the vehicle glass 1 according to the fourth aspect can improve the strength near the opening 19 while preventing excessive rigidity in other parts, thereby suppressing a decrease in pedestrian protection performance.

[0090] The vehicle glass 1 according to the fifth aspect of this disclosure is a vehicle glass 1 according to any of the first to fourth aspects, wherein the opening 19 is formed on one edge side of the glass member 10 (in the embodiment, the upper edge 1a side), and the second region S is within a range of 50 mm or less from the other edge of the glass member 10 facing the one edge (in the embodiment, the lower edge 1b). By making the second region S such a range, the vehicle glass 1 according to the fifth aspect can improve the strength near the opening 19 while preventing excessive rigidity in other parts, thereby suppressing a decrease in pedestrian protection performance.

[0091] The vehicle glass 1 according to the sixth aspect of this disclosure is the vehicle glass 1 according to any of the first to fifth aspects, wherein the thickness Ht in the first region H of the intermediate layer 16 is greater than the thickness St in the second region S. By making the thickness Ht in the first region H greater than the thickness St in the second region S, the rigidity of the intermediate layer 16 in the first region H can be made higher than the rigidity of the second region S, thereby suppressing a decrease in the strength of the glass member 10 near the opening 19.

[0092] The vehicle glass 1 according to the seventh aspect of this disclosure is the vehicle glass 1 according to the sixth aspect, wherein the opening 19 is formed on one edge side (upper edge 1a side in the embodiment) of the glass member 10, and the intermediate layer 16 of the first region H has a wedge-shaped cross-section such that the thickness Ht decreases from one edge side toward the other edge side (lower edge 1b side in the embodiment) facing the first edge side. In the vehicle glass 1 according to the seventh aspect, by increasing the thickness Ht on one edge side in which the opening 19 is formed, the rigidity of the intermediate layer 16 in the first region H near the opening 19 can be made higher than the rigidity of the second region S, and the decrease in the strength of the glass member 10 near the opening 19 can be suppressed.

[0093] The vehicle glass 1 according to the eighth aspect of this disclosure is the vehicle glass 1 according to either the sixth or seventh aspect, wherein the thickness Ht of the intermediate layer 16 in the first region H is 0.76 mm or more and 3 mm or less. By setting the thickness Ht of the first region H in the vehicle glass 1 according to the eighth aspect to this range, it is possible to improve the strength near the opening 19 while suppressing a decrease in pedestrian protection performance.

[0094] The vehicle glass 1 according to the ninth aspect of this disclosure is a vehicle glass 1 according to any of the first to eighth aspects, wherein the intermediate layer 16 (first portion 16D) of the first region H is made of a material that is more rigid than the intermediate layer 16 (second portion 16E) of the second region S. In the vehicle glass 1 according to the ninth aspect, by making the material constituting the first portion 16D a material that is more rigid than the material constituting the second portion 16E, the rigidity of the intermediate layer 16 in the first region H can be made higher than the rigidity of the second region S, and the decrease in the strength of the glass member 10 near the opening 19 can be suppressed.

[0095] The vehicle glass 1 according to the tenth aspect of this disclosure is the vehicle glass 1 according to the ninth aspect, wherein the intermediate layer 16 (first portion 16D) of the first region H contains at least one of polyvinyl butyral modified material, ethylene-vinyl acetate copolymer material, urethane resin material, vinyl chloride resin material, ionomer resin, cycloolefin polymer, and polymethyl methacrylate, and the intermediate layer 16 (second portion 16E) of the second region S contains at least one of polyvinyl butyral modified material, ethylene-vinyl acetate copolymer material, urethane resin material, vinyl chloride resin material, ionomer resin, cycloolefin polymer, and polymethyl methacrylate. By composing the first portion 16D and the second portion 16E of the vehicle glass 1 according to the tenth aspect with such materials, the rigidity of the intermediate layer 16 in the first region H can be made higher than the rigidity of the second region S, and the decrease in the strength of the glass member 10 near the opening 19 can be suppressed.

[0096] The vehicle glass 1 according to the eleventh aspect of this disclosure is a vehicle glass 1 according to any of the first to tenth aspects, wherein the intermediate layer 16 is a multilayer acoustic intermediate layer in which three or more layers of ordinary layers (first ordinary layer 161, second ordinary layer 162) and a sound insulation layer 163 with different glass transition temperatures are alternately laminated. The vehicle glass 1 according to the eleventh aspect can improve the sound insulation performance of the vehicle glass 1 by making the intermediate layer 16 a multilayer acoustic intermediate layer.

[0097] The vehicle glass 1 according to the twelfth aspect of this disclosure is the vehicle glass 1 according to the eleventh aspect, wherein the glass transition temperature of the normal layer (first normal layer 161, second normal layer 162) is 15°C or higher, and the glass transition temperature of the sound insulation layer 163 is less than 15°C. The vehicle glass 1 according to the twelfth aspect can improve the sound insulation performance of the vehicle glass 1 by setting the glass transition temperatures of the normal layer and the sound insulation layer 163 within the above range.

[0098] The vehicle glass 1 according to the 13th aspect of this disclosure is a vehicle glass 1 according to any of the 1st to 12th aspects, wherein the sound insulation performance of the intermediate layer 16 in a first region H including the peripheral edge of the opening 19 is higher than the sound insulation performance in a second region S separated from the first region H, and the level of sound insulation performance is defined by the magnitude of the loss coefficient measured by the mechanical impedance method (MIM) in accordance with ISO 16940 for a test piece of a glass diaphragm on a flat plate having a length of 300 mm, a width of 25 mm, and a thickness of 2 mm. The vehicle glass 1 according to the 13th aspect can reduce the wiping noise generated when the wiper 60 passes (wipes) over the boundary between the glass member 10 and the transparent member 20 (more specifically, the boundary between the glass member 10 and the frame member 30, and the boundary between the frame member 30 and the transparent member 20) by increasing the sound insulation performance of the intermediate layer 16 in the first region H including the peripheral edge of the opening 19.

[0099] The vehicle glass 1 according to the 14th aspect of this disclosure is a vehicle glass 1 according to any of the 1st to 13th aspects, wherein the peripheral edge 16C of the intermediate layer 16 on the opening 19 side is flush with the peripheral edges 12C, 14C of the glass substrates 12, 14 on the opening 19 side, or protrudes toward the center of the opening 19 from the peripheral edges 12C, 14C of the glass substrates 12, 14 on the opening 19 side. In the vehicle glass 1 according to the 14th aspect, the intermediate layer 16 is reliably bonded to and reinforced with the glass substrates 12, 14 in the first region H including the peripheral edge of the opening 19, which may be a weak point in terms of strength, thereby suppressing a decrease in the strength of the glass member 10 near the opening 19. Therefore, deformation of the glass member 10 when subjected to loads such as impact can be suppressed, and cracking and penetration can be suppressed.

[0100] A vehicle glass 1 according to a 15th aspect of this disclosure comprises a glass member 10 formed by laminating two glass substrates 12, 14 and an intermediate layer 16 located between the glass substrates 12, 14, thereby forming an opening 19 that penetrates from the surface 12A on the first direction side (Z1 direction side) to the surface 18B on the second direction side (Z2 direction side) opposite to the first direction side, and a transparent member 20 disposed within the opening 19 that transmits far-infrared rays, wherein the peripheral edge 16C of the intermediate layer 16 on the opening 19 side is flush with the peripheral edges 12C, 14C of the glass substrates 12, 14 on the opening 19 side, or protrudes toward the center of the opening 19 from the peripheral edges 12C, 14C of the glass substrates 12, 14 on the opening 19 side. In the vehicle glass 1 according to the 15th embodiment, the intermediate layer 16 is reliably bonded to the glass substrates 12 and 14 in the first region H, which includes the peripheral edge of the opening 19, which may be a weak point in terms of strength, thereby reinforcing the glass member 10 and preventing a decrease in strength near the opening 19. As a result, deformation of the glass member 10 when subjected to loads such as impacts can be suppressed, and cracking and penetration can be prevented.

[0101] The vehicle glass 1 according to the 16th aspect of this disclosure is a vehicle glass 1 according to either the 14th or 15th aspect, wherein the ratio D / T of the amount of protrusion D of the peripheral edge 16C of the intermediate layer 16 protruding toward the center of the opening 19 relative to the peripheral edge 12C, 14C of the glass substrates 12, 14 toward the opening 19, to the thickness T of the glass member 10 is 0% or more and 100% or less. By setting the ratio D / T of the amount of protrusion D to the thickness T of the glass member 10 to such a range, the vehicle glass 1 according to the 16th aspect can be reliably joined and reinforced to the glass substrates 12, 14, and the decrease in the strength of the glass member 10 near the opening 19 can be suppressed. On the other hand, when the frame member 30, which is provided between the glass member 10 and the transparent member 20, is assembled into the opening 19, the outer surface of the frame member 30 and the protruding peripheral end portion 16C of the intermediate layer 16 may interfere with each other, hindering assembly or preventing deformation of the glass member 10 from the peripheral end portion 16C side by the frame member 30.

[0102] Although embodiments of the present invention have been described above, the embodiments are not limited to those described herein. Furthermore, the aforementioned components include those that can be easily conceived by those skilled in the art, those that are substantially the same, and those that fall within the so-called equivalent range. Moreover, the aforementioned components can be combined as appropriate. Furthermore, various omissions, substitutions, or modifications of the components can be made without departing from the spirit of the embodiments described above.

[0103] 1 Vehicle glass 10 Glass components 12, 14 Glass substrate 16 Intermediate layer 18 Light-shielding layer 19 Opening 20 Transmitting component 30 Frame component 40 Adhesive 50 Bracket 100 Camera unit A1 Light-transmitting area A2 Light-shielding area B Far-infrared transmitting area C Visible light transmitting area CA1 Far-infrared camera CA2 Visible light camera D Protrusion amount H First area S Second area Hd, Sd Distance Ht, St, T Thickness U Far-infrared transmitting unit V Vehicle

Claims

1. A glass member comprising: two glass substrates and an intermediate layer located between the glass substrates, wherein an opening is formed that penetrates from the surface on the first direction side to the surface on the second direction side opposite to the first direction side; and a transparent member disposed within the opening that transmits far-infrared rays, wherein the intermediate layer has a rigidity in a first region including the peripheral edge of the opening that is higher than the rigidity in a second region separated from the first region.

2. The intermediate layer of the first region has a storage spring constant in the tensile direction of 5 N / mm or more and 10,000 N / mm or less when a frequency of 1 Hz is applied, under conditions of 23°C with a sample width of 5 mm and a sample length of 12 mm. This is the vehicle glass according to claim 1.

3. When a sample width of 5 mm, a sample length of 12 mm, and a frequency of 1 Hz is applied in a 23°C environment, the ratio of the difference between the tensile storage spring constant in the intermediate layer of the first region and the tensile storage spring constant in the intermediate layer of the second region to the storage spring constant of the second region is in the range of +20% or more and +200% or less, as described in claim 1.

4. The vehicle glass according to claim 1, wherein the first region is within 50 mm or less from the peripheral edge of the opening.

5. The vehicle glass according to claim 1, wherein the opening is formed on one edge side of the glass member, and the second region is within 50 mm or less from the other edge of the glass member that is opposite to the one edge.

6. The vehicle glass according to claim 1, wherein the thickness of the intermediate layer in the first region is greater than the thickness of the second region.

7. The vehicle glass according to claim 6, wherein the opening is formed on one edge side of the glass member, and the intermediate layer of the first region has a wedge-shaped cross-section such that its thickness decreases from one edge side toward the other edge side facing the first edge side.

8. The vehicle glass according to claim 6, wherein the thickness of the intermediate layer in the first region is 0.76 mm or more and 3 mm or less.

9. The vehicle glass according to claim 1, wherein the intermediate layer of the first region is made of a material with higher rigidity than the intermediate layer of the second region.

10. The vehicle glass according to claim 9, wherein the intermediate layer of the first region comprises at least one of a polyvinyl butyral modified material, an ethylene-vinyl acetate copolymer material, a urethane resin material, a vinyl chloride resin material, an ionomer resin, a cycloolefin polymer, and polymethyl methacrylate, and the intermediate layer of the second region comprises at least one of a polyvinyl butyral modified material, an ethylene-vinyl acetate copolymer material, a urethane resin material, a vinyl chloride resin material, an ionomer resin, a cycloolefin polymer, and polymethyl methacrylate.

11. The vehicle glass according to claim 1, wherein the intermediate layer is a multilayer acoustic intermediate layer in which three or more layers of normal layers and sound-insulating layers, each having a different glass transition temperature, are alternately laminated.

12. The glass for vehicles according to claim 11, wherein the glass transition temperature of the normal layer is 15°C or higher, and the glass transition temperature of the sound-insulating layer is less than 15°C.

13. The vehicle glass according to claim 1, wherein the sound insulation performance of the intermediate layer in the first region including the peripheral edge of the opening is higher than the sound insulation performance in the second region separated from the first region, and the height of the sound insulation performance is defined by the magnitude of the loss coefficient measured by the mechanical impedance method (MIM) in accordance with ISO 16940 for a test piece of a glass diaphragm on a flat plate having a length of 300 mm, a width of 25 mm, and a thickness of 2 mm.

14. The vehicle glass according to claim 1, wherein the peripheral edge of the intermediate layer on the opening side is flush with the peripheral edge of the glass substrate on the opening side, or protrudes toward the center of the opening from the peripheral edge of the glass substrate on the opening side.

15. A glass member for a vehicle comprising: two glass substrates and an intermediate layer located between the glass substrates, laminated to form an opening that penetrates from the surface on the first direction side to the surface on the second direction side opposite to the first direction side; and a transparent member disposed within the opening that transmits far-infrared rays, wherein the peripheral edge of the intermediate layer on the opening side is flush with the peripheral edge of the glass substrate on the opening side, or protrudes toward the center of the opening from the peripheral edge of the glass substrate on the opening side.

16. The vehicle glass according to claim 14 or 15, wherein the ratio of the amount of protrusion of the peripheral edge of the intermediate layer on the opening side toward the center of the opening relative to the peripheral edge of the glass substrate on the opening side, to the thickness of the glass member, is 0% or more and 100% or less.

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