Vehicle glass

Abstract

The purpose of the present invention is to suppress local wear of a wiper. Vehicle glass (1) is configured such that an intersection point between a straight line (L1) from a center (Q) toward the upper edge of a surface (10A) of a glass member (10) and a peripheral edge (31F) of a frame member (30) is designated as an upper end point P1, a section that includes the upper end point (P1) and extends along the peripheral edge (31F) from a position (P1a) separated from the upper end point (P1) by a unit length in one direction to a position (P1b) separated from the upper end point (P1) by a unit length in the other direction is designated as an upper section (A1), an intersection point between the peripheral edge (31F) and a straight line (L2) from the center (Q) toward the lower edge of the surface (10A) is designated as a lower end point (P2), and a section that includes the lower end point (P2) and extends along the peripheral edge (31F) from a position (P2a) separated from the lower end point (P2) by a unit length in the one direction to a position (P2b) separated from the lower end point (P2) by a unit length in the other direction is designated as a lower section (A2). In this instance, the average value of Z-direction steps (D) between an end surface (31A) of the frame member (30) and the surface (10A) of the glass member (10) in the upper section (A1) and the lower section (A2) is less than the average value of the steps (D) in all sections of the peripheral edge (31F).

Description

Vehicle glass

[0001] This invention relates to vehicle glass.

[0002] Various sensors may be installed on vehicles such as automobiles to improve their safety. Examples of sensors installed on vehicles include cameras, LiDAR (Light Detection and Ranging), millimeter-wave radar, and infrared sensors.

[0003] Patent Document 1 describes a vehicle glass in which an opening is formed in a glass member, a transparent member capable of transmitting far-infrared rays is provided in the opening, and far-infrared rays are received through the transparent member. Patent Document 2 describes an infrared-transmitting member having a second glass fitted into a support member (frame member) inserted into the opening of a first glass, wherein the outer end face of the support member is recessed inward from the outer end face of the first glass.

[0004] International Publication No. 2022 / 045011, Chinese Patent Application Publication No. 116261524, Specification

[0005] In a configuration where a frame member is inserted into an opening in a glass member, if there is a step between the glass member and the frame member, the wiper may wear down due to the step when wiping the surface of the glass member. In particular, if the wiper is locally worn, wiping may result in streaks on the surface of the glass member, making it impossible to remove dirt from the glass member or reducing visibility through the glass member. Therefore, it is necessary to suppress localized wear of the wiper.

[0006] The present invention aims to provide vehicle glass capable of suppressing localized wear of wipers.

[0007] The vehicle glass according to this disclosure comprises a glass member having an opening formed therein that penetrates from the surface on the first direction side along the thickness direction to the surface on the second direction side opposite to the first direction; a transparent member provided in the opening that transmits far infrared rays; and a frame member provided between the inner circumferential surface of the opening and the outer circumferential surface of the transparent member, which fixes the transparent member to the glass member, wherein the unit length of the frame member is 1 / 18 of the total length of the outer periphery of the first end face on the first direction side, the upper endpoint is the intersection of a straight line from the center position of the surface on the first direction side of the transparent member toward the upper edge of the surface of the glass member and the periphery of the frame member, and from a position a unit length away from the upper endpoint in one direction along the periphery of the frame member, When the upper section is defined as the section along the periphery of the frame member, including the upper endpoint, up to a position separated by the unit length in the other direction along the periphery, and the lower endpoint is defined as the intersection point of a straight line from the center position of the transparent member toward the lower edge of the surface of the glass member and the periphery of the frame member, and the lower section is defined as the section along the periphery of the frame member, including the lower endpoint, up to a position separated by the unit length in one direction along the periphery of the frame member, up to a position separated by the unit length in the other direction along the periphery of the frame member, the average value of the step difference in the thickness direction between the first end face of the frame member and the surface on the first direction side of the glass member in the upper section and the lower section is smaller than the average value of the step difference over the entire section of the periphery of the frame member.

[0008] According to the present invention, localized wear of the wiper can be suppressed.

[0009] Figure 1 is a schematic diagram showing the vehicle glass according to the embodiment mounted on a vehicle. Figure 2 is a schematic plan view of the vehicle glass according to the 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 a schematic enlarged view of a portion of the surface of the region in the vehicle glass where the opening is formed. Figure 6 is a partially enlarged view of the cross-sectional view C-C in Figure 5. Figure 7A is a partially enlarged view of the cross-sectional view D-D in Figure 5. Figure 7B is a partially enlarged view of the cross-sectional view C-C in Figure 5 relating to another example. Figure 7C is a partially enlarged view of the cross-sectional view D-D in Figure 5 relating to another example. Figure 8 is a schematic enlarged cross-sectional view of the transparent member and the frame member. Figure 9 is a diagram showing an example of a configuration when a far-infrared camera is attached to the vehicle glass. Figure 10A is a cross-sectional view of the vehicle glass according to the first modified example. Figure 10B is a cross-sectional view of the vehicle glass according to another example of the first modified example. Figure 11 is a cross-sectional view of the vehicle glass according to the second modified example. Figure 12 is a cross-sectional view of a vehicle glass according to a second modified example.

[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] (Vehicle) Figure 1 is a schematic diagram showing the vehicle glass according to the embodiment mounted on a vehicle. As shown in Figure 1, the vehicle glass 1 according to this 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. Inside the vehicle V (interior), a far-infrared camera CA1 and a visible light camera CA2 are mounted. The inside of the vehicle V (interior) refers to, for example, the interior of the vehicle where the driver's seat is located.

[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 an 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. 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.

[0014] Hereafter, among the directions parallel to the surface of the vehicle glass 1, the direction that is left-right when the vehicle glass 1 is mounted on a vehicle will be defined as the X direction (lateral direction), and among the directions parallel to the surface of the vehicle glass 1, the direction that is up-down (vertical direction) when the vehicle glass 1 is mounted on a vehicle will be defined as the Y direction. Furthermore, one direction of the Y direction, more specifically the direction that is vertically upward when mounted on a vehicle V, will be defined as the Y1 direction (upward direction), and the direction opposite to the Y1 direction, more specifically the direction that is vertically downward when mounted on a vehicle V, will be defined as the Y2 direction (downward direction). In this embodiment, the X direction and the Y direction are orthogonal. Furthermore, 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 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 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 the direction 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] In this embodiment, the shape of the vehicle glass 1 (glass member 10) when viewed from the Z direction is rectangular, or for example, trapezoidal. In this embodiment, the glass member 10 has a horizontally elongated shape, which is longer in the X direction (horizontal direction) than in the Y direction (vertical direction). In other words, the shortest straight line connecting the side edge 1c, which is one side in the X direction, and the side edge 1d, which is the other side in the X direction, is longer than the shortest straight line connecting the upper edge 1a, which is the side in the Y1 direction, and the lower edge 1b, which is the side in the Y2 direction. As shown in Figure 2, the upper edge 1a is the edge located on the vertically upper side when the vehicle glass 1 is mounted on the vehicle V. The lower edge 1b is the edge located on the vertically lower side when the vehicle glass 1 is mounted on the vehicle V. The side edge 1c is the edge 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. In the example in Figure 2, the upper edge portion 1a is shorter than the lower edge portion 1b.

[0016] However, the shape of the glass member 10 when viewed from the Z direction is not limited to a rectangle or trapezoid, but can be arbitrary, for example, a circle or an ellipse, or a polygon other than a rectangle. In this case, the X and Y directions may be defined as follows: That is, the equivalent rectangle is the smallest rectangle that includes the glass member 10 inside when viewed from the Z direction and is centered at the center point O (the smallest rectangle that does not extend beyond the periphery of the glass member 10 when viewed from the Z direction and is centered at the center point O). In this case, the X direction may refer to the direction along the longer side of the equivalent rectangle, and the Y direction may refer to the direction along the shorter side of the equivalent rectangle.

[0017] 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 (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.

[0018] 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. That is, 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 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. That is, 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. Thus, in this embodiment, the far-infrared transmission region B (the opening 19 described later) is formed within the light-shielding region A2a, which is the part 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 transmission region B (the opening 19 described later) 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 transmission region B (the opening 19 described later) may be formed at a position closer to the lower edge 1b than 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 transmission region C.

[0019] 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 is not visible from outside the vehicle.

[0020] (Glass Member) The glass member 10 may be single-pane glass or laminated glass, but in this embodiment, the glass member 10 is laminated glass in which a first glass base 12 provided on the outside of the vehicle and a second glass base 14 provided on the inside of the vehicle are laminated with an intermediate layer 16 in between. Specifically, the glass member 10 comprises a first glass base 12, a second glass base 14, an intermediate layer 16, and a light-shielding layer 18. In the vehicle glass 1, the first glass base 12, the intermediate layer 16, the second glass base 14, and the light-shielding layer 18 are laminated in this order in the Z2 direction. The first glass base 12 and the second glass base 14 are fixed (bonded) to each other via the intermediate layer 16.

[0021] The glass substrate may be inorganic glass or organic glass. Examples of inorganic glass include soda-lime glass, aluminosilicate glass, borosilicate glass, alkali-free glass, and quartz glass, which can be used without particular restriction. 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 process are preferred. When the first glass substrate 12 and the second glass substrate 14 are inorganic glass, the first glass substrate 12 and the second glass substrate 14 may be either untempered glass or tempered glass. Tempered glass may be either physically tempered glass or chemically tempered glass. Untempered glass is obtained by forming molten glass into a plate and slowly cooling it. Tempered glass is obtained 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 first glass substrate 12 and the second glass substrate 14 may be transparent or colored. The plate thickness of the first glass substrate 12 and the second glass substrate 14 is not particularly limited, but is preferably 0.3 mm or more, more preferably 0.5 mm or more, even more preferably 1 mm or more, even more preferably 1.5 mm or more, and most preferably 2 mm or more. Furthermore, the plate thickness of the first glass substrate 12 and the second glass substrate 14 is preferably 5 mm or less, more preferably 4 mm or less, and even more preferably 3 mm or less. The intermediate layer 16 is an adhesive layer that bonds the first glass substrate 12 and the second 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. The intermediate layer 16 may also 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 first glass substrate 12 includes one surface 12A (the surface on the Z1 direction) and the other surface 12B (the surface on the Z2 direction), and the other surface 12B is in contact with one surface 16A (the surface on the Z1 direction) of the intermediate layer 16 and is fixed (adhered) to the intermediate layer 16. The second glass substrate 14 includes one surface 14A (the surface facing the Z1 direction) and the other surface 14B (the surface facing the Z2 direction), and the one surface 14A is in contact with the other surface 16B (the surface facing the Z2 direction) of the intermediate layer 16 and is fixed (bonded) to the intermediate layer 16. Thus, the vehicle glass 1 is a laminated glass in which the first glass substrate 12 and the second glass substrate 14 are laminated. However, the vehicle glass 1 is not limited to laminated glass, and may be a configuration that includes only one of the first glass substrate 12 and the second glass substrate 14 (i.e., a single-pane glass). In this case, the intermediate layer 16 may not be provided. The intermediate layer 16 may contain a heat-generating film (PET substrate), a heating device, an antenna, a liquid crystal device, a dimming device, an image projection layer, an emitting layer, a heat-reflective layer, etc. Hereinafter, when the first glass substrate 12 and the second glass substrate 14 are not distinguished, they will be referred to as glass substrates. When the vehicle glass 1 is installed in a vehicle, the vehicle glass 1 may have a curved shape that protrudes outwards from the vehicle. The curved shape of the vehicle glass 1 from the periphery to the center may be a curved shape in only one direction, a curved shape in two perpendicular directions, or a curved shape in three or more directions. The thickness of the vehicle glass 1 is not particularly limited, but is preferably 3 mm or more, more preferably 4 mm or more, even more preferably 4.5 mm or more, even more preferably 5 mm or more, and most preferably 6 mm or more.Furthermore, the thickness of the vehicle glass 1 is preferably 10 mm or less, more preferably 9 mm or less, even more preferably 8 mm or less, and most preferably 7 mm or less. In this embodiment, the upper and lower limits can be combined as appropriate. Also, if the vehicle glass 1 is laminated glass, the above thickness may be read as the total thickness of the laminated glass.

[0022] The light-shielding layer 18 is a layer that shields visible light (wavelength 380 nm to 830 nm). The light-shielding layer 18 may be provided in a band shape along the periphery of the vehicle glass 1. This suppresses the deterioration of aesthetics due to refraction of the glass substrate. The light-shielding layer 18 is also a layer that shields ultraviolet rays (wavelength 300 nm to 380 nm). This suppresses the exposure of components that are susceptible to deterioration by ultraviolet rays (for example, the intermediate layer 16 and the adhesive layers 50 and 52 described later) to sunlight. Preferably, the light-shielding layer 18 also shields infrared rays (wavelength 830 nm to 2000 nm). Shielding is achieved, for example, by absorbing the target light ray. For example, the visible light transmittance and ultraviolet light transmittance of the light-shielding layer 18 are 5% or less, preferably 3% or less, more preferably 1% or less, and even more preferably substantially 0%. The degree of shielding may vary depending on the wavelength of the light ray. The transmittance of light at each wavelength can be measured, for example, using an ultraviolet-visible-near-infrared spectrophotometer (manufactured by Hitachi High-Tech Corporation, product name: U-4100).

[0023] The light-shielding layer 18 is configured as a substantially opaque layer. For example, a ceramic light-shielding layer or a light-shielding film can be used as the light-shielding layer 18. As a ceramic light-shielding layer, for example, a ceramic layer made of a conventionally known material such as a black ceramic layer can be used. As a 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 second 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 first glass substrate 12. In this case, the light-shielding layer 18 may not be provided on the second glass substrate 14. In other words, the light-shielding layer 18 may be provided on the surface 14B of the second glass substrate 14, on the surface 12B of the first glass substrate 12, or on both surfaces 14B and 12B.

[0024] In this embodiment, the side of the vehicle glass 1 on which the light-shielding layer 18 is provided is the interior side (Z2 direction side), and the first glass substrate 12 is 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 a first glass substrate 12 and a second glass substrate 14, the light-shielding layer 18 may be formed between the first glass substrate 12 and the second 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.

[0025] 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 first glass substrate 12, the intermediate layer 16, the second 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 first glass substrate 12, the intermediate layer 16, and the second glass substrate 14 are laminated, but the light-shielding layer 18 is not laminated. As described above, the light-shielding region A2 blocks ultraviolet rays with the light-shielding layer 18. The ultraviolet transmittance of the light-shielding region A2 is lower than that of the region without the light-shielding layer 18 (light-transmitting region A1, far-infrared transmitting region B, and visible light transmitting region C).

[0026] As shown in Figure 4, the visible light transmission region C, like the light-transmitting region A1, is a region in the Z direction where the glass member 10 does not have a light-shielding layer 18. That is, the visible light transmission region C is a region where the first glass substrate 12, the intermediate layer 16, and the second glass substrate 14 are laminated, and the light-shielding layer 18 is not laminated.

[0027] (Far-infrared transmitting unit) The vehicle glass 1 has a far-infrared transmitting unit U. Specifically, the vehicle glass 1 has an opening 19 formed in the glass member 10, and the far-infrared transmitting unit U is provided in the opening 19. The opening 19 is an opening that penetrates from the inner surface 10B (surface 18B in the Z2 direction) of the glass member 10 to the outer surface 10A (surface 12A in the Z1 direction). The opening 19 is formed in the light-shielding region A2a. The light-shielding region A2a surrounds the opening 19. The region where the opening 19 is formed and the far-infrared transmitting unit U is provided is the far-infrared transmitting region B. The far-infrared transmitting region B does not have a light-shielding layer 18. That is, in the far-infrared transmitting region B, the first glass substrate 12, the intermediate layer 16, the second glass substrate 14, and the light-shielding layer 18 are not provided, and the far-infrared transmitting unit U is provided in the formed opening 19.

[0028] The far-infrared transmission unit U comprises a transmission member 20, a frame member 30 provided on the periphery of the transmission member 20, an adhesive layer 50 for bonding the frame member 30 and the glass member 10, and an adhesive layer 52 for bonding the transmission member 20 and the frame member 30. Note that the frame member 30 and the adhesive layers 50 and 52 are not essential components, and the transmission member 20 may be directly attached to the glass member 10. In the following description, when the transmission member 20 is viewed from the Z direction, the direction toward the geometric center of the transmission member 20 (opening 19) may be described as the radially inward direction, and the direction away from the geometric center may be described as the radially outward direction.

[0029] (Transmitting Member) The transmitting member 20 is positioned inside the opening 19 and transmits far-infrared rays. The average transmittance of far-infrared rays with wavelengths of 8 μm to 13 μm is higher for the transmitting member 20 than for the glass member 10. The average transmittance of far-infrared rays with wavelengths of 8 μm to 13 μm is higher for the transmitting member 20 than for the frame member 30. Preferably, the average transmittance of far-infrared rays with wavelengths of 8 μm to 13 μm for the transmitting member 20 is 25% or more, more preferably 40% or more, even more preferably 50% or more, even more preferably 70% or more, and particularly preferably 85% or more. Furthermore, it is preferable that the average transmittance of far-infrared rays with wavelengths of 8 μm to 13 μm for the transmitting member 20 is 100% or less. In order to make the average transmittance of far-infrared rays 85% or more, it is preferable to provide an anti-reflective coating. When the average transmittance of far-infrared rays is within this numerical range, far-infrared rays are transmitted appropriately, and the performance of the far-infrared camera CA1 can be fully demonstrated. Furthermore, the transmittance of far-infrared rays can be measured, for example, using a Fourier transform infrared spectrometer (manufactured by ThermoScientific, product name: Nicolet iS10).

[0030] The material of the transmissive 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. The transmissive member 20 more preferably has at least one of Si and Ge as a main component, and even more preferably has Si as a main component. When the transmissive member 20 has Si or Ge as a main component, an oxide layer (a layer of silicon oxide or germanium oxide) of the main component may be formed on the surface. Note that the main component in the present embodiment may refer to a content rate of 50% by mass or more with respect to the entire target member, preferably 70% by mass or more, and more preferably 90% by mass or more.

[0031] The transmissive member 20 may be coated on the surface 20A on the Z1 direction side or the surface 20B on the Z2 direction side. 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), carbon hydride, diamond-like carbon (DLC), metal fluoride (MgF ｘ CaF ｘ SrF ｘ BaF ｘ PbF ｘ LaF ｘ 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.

[0032] From the viewpoint of strength, the thickness of the permeable member 20 is preferably 1.0 mm or more, more preferably 1.5 mm or more, and even more preferably 2.0 mm or more. The upper limit of the thickness of the permeable member 20 is not particularly limited, but is usually 5.0 mm or less. Here, thickness refers to the length of the permeable member 20 in the Z direction.

[0033] (Frame Member) As shown in Figure 3, the frame member 30 is provided within the opening 19 of the glass member 10 and is a member that fixes the transparent member 20 within the opening 19. The frame member 30 will be described in detail below.

[0034] As shown in Figure 3, the frame member 30 has a wall portion 31, a fixing portion 32, and a support portion 33. The wall portion 31 is the portion provided between the inner circumferential surface of the opening 19 and the outer circumferential surface (end face) 21 of the transparent member 20. The fixing portion 32 is the portion that protrudes radially outward from the wall portion 31 and supports the surface 10B of the glass member 10 on the Z2 direction side. The support portion 33 is the portion that protrudes radially inward from the wall portion 31 and supports the surface 20B of the transparent member 20. The frame member 30 may be composed of a single member or of multiple members. A frame member 30 composed of multiple members may, for example, include a first member including the wall portion 31 and the support portion 33, and a second member including the fixing portion 32. A frame member 30 composed of multiple members may, for example, be composed of 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 this embodiment, the frame member 30 is composed of a single member including a wall portion 31, a fixing portion 32, and a support portion 33.

[0035] The wall portion 31 is formed in a cylindrical shape surrounding the outer peripheral surface 21 of the transmissive member 20. The wall portion 31 is disposed in the radial direction between the outer peripheral surface 21 of the transmissive member 20 and the inner peripheral surface at the opening 19 of the glass member 10. The length of the wall portion 31 in the Z direction, that is, the length in the Z direction from the end face 31A (first end face) on the Z1 direction side of the wall portion 31 to the end face 31B (second end face) on the Z2 direction side, is preferably not less than the total thickness of the glass member 10. Further, the end face 31A of the wall portion 31 is exposed on the Z1 direction side (outside the vehicle) within the opening 19.

[0036] The support portion 33 is formed so as to protrude radially inward from the inner peripheral surface of the wall portion 31. The support portion 33 is provided over the entire circumference in the circumferential direction of the inner peripheral surface of the wall portion 31, and in other words, is in a ring shape (flange shape). However, it is not limited thereto, and the support portion 33 may be provided only in a partial section in the circumferential direction of the inner peripheral surface of the wall portion 31, and a plurality of support portions 33 provided in the partial sections may be arranged side by side in the circumferential direction.

[0037] The support portion 33 is located on the Z2 direction side of the end face 31A of the wall portion 31. Also, in the example of FIG. 3, the support portion 33 is provided over the entire area on the Z2 direction side of the inner peripheral surface of the wall portion 31 that is on the Z2 direction side of the end face 31A, and the surface on the Z2 direction side of the support portion 33 is in the same position as the end face 31B of the wall portion 31 in the Z direction. However, it is not limited thereto, and the support portion 33 may be located on the Z2 direction side of the end face 31A and on the Z1 direction side of the end face 31B.

[0038] The support portion 33 extends from the inner peripheral surface of the wall portion 31 to radially inside of the outer peripheral surface 21 of the transmissive member 20. When the frame member 30 is attached to the transmissive member 20, the support portion 33 is disposed on the Z2 direction side with respect to the surface 20B of the transmissive member 20 and overlaps the surface 20B of the transmissive member 20 in the Z direction. An adhesive layer 52 is provided between the support portion 33 and the surface 20B of the transmissive member 20, and the support portion 33 is adhered to the surface 20B of the transmissive member 20 through the adhesive layer 52.

[0039] The fixing portion 32 is formed to protrude radially outward from the outer circumferential surface of the wall portion 31. The fixing portion 32 is located on the Z2 side of the Z1 side surface of the support portion 33 (the surface on which the transparent member 20 is supported), in other words, the fixing portion 32 protrudes radially outward from the Z2 side portion of the outer circumferential surface of the wall portion 31 (the end face 31B portion). The fixing portion 32 is provided around the entire circumference of the outer circumferential surface of the wall portion 31, in other words, it is ring-shaped (flange-shaped). However, it is not limited to this, and the fixing portion 32 may be provided only in a portion of the outer circumferential surface of the wall portion 31, and multiple fixing portions 32 provided in a portion of the surface may be arranged in the circumferential direction.

[0040] The fixing portion 32 extends from the outer peripheral surface of the wall portion 31 to radially outward from the inner peripheral surface of the opening 19 of the glass member 10. When the frame member 30 is attached to the glass member 10, the fixing portion 32 is positioned on the Z2 side relative to the Z2 side surface 10B of the glass member 10 (the surface 18B of the light-shielding layer 18 in the example of Figure 3), and overlaps with the surface 10B in the Z direction. An adhesive layer 50 is provided between the fixing portion 32 and the surface 10B of the glass member 10, and the fixing portion 32 is bonded to the surface 10B of the glass member 10 via the adhesive layer 50.

[0041] 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. 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.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 a monomer 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 a monomer 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. As the monomer having adhesive functional groups, monomers having carboxyl groups, acid anhydride groups, or carboxylic acid halide groups are preferred, and unsaturated dicarboxylic acid anhydrides are more preferred. Examples of unsaturated dicarboxylic acid anhydrides include itaconic anhydride, citraconic anhydride, 5-norbornene-2,3-dicarboxylic acid anhydride (Hymic anhydride), and maleic anhydride. Monomers having adhesive functional groups may have one adhesive functional group alone or two or more. ETFE may optionally have units derived from ethylene, TFE, and other monomers other than monomers having adhesive functional groups. Examples of other monomers include fluoroolefins (excluding tetrafluoroethylene) and fluoro(alkyl vinyl ethers). PFA may optionally have units derived from TFE, perfluoro(alkyl vinyl ethers), and other monomers other than monomers having adhesive functional groups. Examples of other monomers include fluoroolefins (excluding tetrafluoroethylene). Furthermore, the frame member 30 is preferably black. This improves aesthetics.

[0042] Furthermore, a hydrophilic material may be used for the frame member 30. Examples of hydrophilic materials include acrylic resin. Alternatively, a hydrophilic coating layer may be provided on the surface of the frame member 30. Examples of coating layers include a silane coupling agent having an amino acid ester structure (Shin-Etsu Silicone Co., Ltd., X-88-475) and a photocatalytic coating. Additionally, a coating layer with high weather resistance may be provided on the surface of the frame member 30. Examples of coating layers include a carbon film and a diamond-like carbon (DLC) film. With this configuration, deterioration of the frame member 30 can be suppressed even when it is exposed to rain.

[0043] Furthermore, the hardness of the frame member 30, measured by Shore A, is preferably between 20 and 100, more preferably between 50 and 95, and even more preferably between 65 and 90. Having a hardness within this range suppresses deformation of the frame member 30 due to external forces. This hardness can be measured according to the measurement method specified in JIS K6253.

[0044] Furthermore, the adhesive layer 50 is a layer composed of a resin adhesive. The adhesive layer 50 is preferably a cured urethane adhesive or a modified silicone adhesive, and more preferably a cured urethane adhesive. The constituent material of the adhesive layer 52 is not particularly limited. For example, the adhesive layer 52 is preferably a cured urethane adhesive or a modified silicone adhesive, and more preferably an adhesive that can be applied as a primer when integrally molding (insert molding) the permeable member 20 and the frame member 30. The adhesive layer 52 is even more preferably to contain a silane coupling agent. The silane coupling agent is a compound containing silicon and having an organic reaction site that reacts with an organic material and an inorganic reaction site that reacts with an inorganic material.

[0045] (Fixing structure of frame member) The vehicle glass 1 has the configuration described above. Below, the structure in which the frame member 30 and the transparent member 20 are fixed within the opening 19 of the glass member 10 in the vehicle glass 1 will be specifically described. Figure 5 is a schematic enlarged view of a portion of the surface of the region in which the opening of the vehicle glass is formed, Figure 6 is an enlarged view of a portion of the cross section C-C of Figure 5, and Figure 7A is an enlarged view of a portion of the cross section D-D of Figure 5. The cross section of the vehicle glass 1 shown in Figure 6 is a Y-section that passes through the center Q of the opening 19 and is perpendicular to the X direction (parallel to the Y direction). The cross section of the vehicle glass 1 shown in Figure 7A is an X-section that passes through the center Q of the opening 19 and is perpendicular to the Y direction (parallel to the X direction). Note that the center Q is the center of the opening 19 as seen from the Z direction, but it can also be said to be the center position of the surface 20A of the transparent member 20 as seen from the Z direction. In this embodiment, the center refers to the geometric center, or in other words, the centroid. For example, the center Q of the opening 19 is the geometric center (centroid) of the opening 19 as viewed from the Z direction.

[0046] (Curvature of the glass member) The glass member 10 may be flat, but as shown in Figures 6 and 7A, in this embodiment it is curved, and is curved such that the Z1 direction is convex. In this embodiment the glass member 10 is curved more in the X direction than in the Y direction. In other words, in this embodiment the radius of curvature of the glass member 10 in the X cross section (cross section in Figure 7A) is smaller than the radius of curvature of the glass member 10 in the Y cross section (cross section in Figure 6). Note that the glass member 10 is not limited to being curved more in the X direction than in the Y direction, but may be curved more in the Y direction than in the X direction, as shown in the modified example described later. Note that the radius of curvature in the Y cross section refers to the radius of curvature of the line along the surface 10A in the Y cross section, and the radius of curvature in the X cross section refers to the radius of curvature of the line along the surface 10A in the X cross section. Furthermore, if the line along the surface 10A in the Y-section or X-section is not a quadratic curve, the radius of curvature of the two-dimensional curve obtained by approximating the line along the surface 10A using the least squares method may be used as the radius of curvature in the Y-section or X-section.

[0047] In this embodiment, it is preferable that the transparent member 20 and the frame member 30 are not curved. In other words, it is preferable that the surface 20A of the transparent member 20 on the Z1 direction side and the end face 31A of the frame member 30 on the Z1 direction side are planar. Here, planar may refer to a radius of curvature of 10,000 mm or more.

[0048] (Inner surface of the glass member) As shown in Figures 6 and 7A, the inner surface of the opening 19 of the glass member 10 is defined as the inner surface 19C. In this embodiment, the shape of the periphery along the inner surface 19C when viewed from the Z direction (i.e., the shape of the opening 19) is circular, but its shape may be arbitrary, and it may be elliptical or polygonal (for example, trapezoidal).

[0049] Furthermore, as shown in Figures 6 and 7A, it is preferable that a chamfered portion 19D is formed at the boundary between the inner circumferential surface 19C and the surface 10A of the glass member 10. The chamfered portion 19D is a chamfered surface that connects the surface 10A and the inner circumferential surface 19C. When viewed from a direction perpendicular to the Z direction, that is, in a cross-sectional view as shown in Figures 6 and 7A, the chamfered portion 19D is flat (i.e., C-chamfered). The width D1 of the chamfered portion 19D in a cross-sectional view as shown in Figures 6 and 7A is preferably 0.1 mm or more and 1.0 mm or less, more preferably 0.15 mm or more and 0.8 mm or less, and even more preferably 0.2 mm or more and 0.5 mm or less. The width D1 refers to the length of the chamfered portion 19D in the radial direction. Furthermore, the chamfer angle θ1 of the chamfered portion 19D is preferably 30° or more and 60° or less, more preferably 40° or more and 50° or less, and even more preferably 45°. The chamfer angle θ1 refers to the angle between the line along the chamfered portion 19D and the line along the inner circumferential surface 19C in a cross-sectional view as shown in Figures 6 and 7A. By forming such a chamfered portion, wear of the wiper at the edge can be suppressed.

[0050] Figure 7B is a partially enlarged view of the cross-sectional view C-C of Figure 5 relating to another example, and Figure 7C is a partially enlarged view of the cross-sectional view D-D of Figure 5 relating to another example. As shown in Figures 7B and 7C, the chamfered portion 19D is not limited to being flat (i.e., C-chamfer) when viewed from a direction perpendicular to the Z direction, but may also be curved (i.e., R-chamfer). In the case of an R-chamfer, the preferred range for the width D1 and chamfer angle θ1 of the chamfered portion 19D may be the same as in the case of a C-chamfer. Note that when the chamfered portion 19D is an R-chamfer, the angle θ1 may be the angle between the tangent line at the midpoint of the chamfered portion 19D when viewed from a direction perpendicular to the Z direction and the line along the inner circumferential surface 19C. Furthermore, in the case of an R-chamfer, the radius of curvature of the chamfered portion 19D is preferably 0.01 mm or more and 5.0 mm or less, more preferably 0.05 mm or more and 3.0 mm or less, and even more preferably 0.1 mm or more and 2.0 mm or less.

[0051] (Outer surface of frame member) As shown in Figures 6 and 7A, the outer surface of the wall portion 31 of the frame member 30 is defined as the outer surface 31C. The outer surface 31C is the surface that faces (contacts in this embodiment) the inner surface 19C of the opening 19. In this embodiment, the shape of the periphery along the outer surface 31C when viewed from the Z direction is circular, but its shape may be arbitrary, and it may be elliptical or polygonal (for example, trapezoidal).

[0052] Furthermore, as shown in Figures 6 and 7A, it is preferable that a chamfered portion 31D is formed at the boundary between the outer peripheral surface 31C and the end surface 31A of the frame member 30. The chamfered portion 31D is a chamfered surface that connects the end surface 31A and the outer peripheral surface 31C. The chamfered portion 31D is curved (i.e., R-chamfered) when viewed from a direction perpendicular to the Z direction, that is, in a cross-sectional view as shown in Figures 6 and 7A, but is not limited to this, and may be flat (i.e., C-chamfered). The radius of curvature of the chamfered portion 31D in a cross-sectional view as shown in Figures 6 and 7A is preferably 0.01 mm or more and 5.0 mm or less, more preferably 0.05 mm or more and 3.0 mm or less, and even more preferably 0.1 mm or more and 2.0 mm or less. By forming such a chamfered portion, wear of the wiper at the edge can be suppressed.

[0053] As shown in Figure 5, the width W of the wall portion 31 of the frame member 30 is preferably 0.2 mm or more and 4.0 mm or less, more preferably 0.5 mm or more and 4.0 mm or less, even more preferably 1.0 mm or more and 3.0 mm or less, and even more preferably 1.5 mm or more and 2.0 mm or less. The width W refers to the length from the outer peripheral surface 31C to the inner peripheral surface 31E of the frame member 30. The inner peripheral surface 31E is the inner peripheral surface of the wall portion 31 and is the surface that faces (contacts in this embodiment) the outer peripheral surface 21 of the transparent member 20. By having the width W of the wall portion 31 within this range, the transparent member 20 can be properly fixed without making the area where visible light and far infrared rays cannot be transmitted excessively large.

[0054] (Upper End Point and Upper Section) As shown in Figure 5, when viewed from the Z direction, the straight line passing through the center Q and extending along the Y direction toward the Y1 direction, in other words, the straight line from the center Q toward the upper edge 1a of the surface 10A of the glass member 10 (see Figure 2), is defined as the straight line L1. When viewed from the Z direction, the intersection point of the peripheral edge 31F of the end face 31A of the frame member 30 and the straight line L1 is defined as the upper end point P1. Note that the peripheral edge 31F refers to the boundary portion between the outer circumferential surface 31C and the end face 31A, but if a chamfered portion 31D is formed as shown in Figure 6, for example, it refers to the boundary portion between the chamfered portion 31D and the end face 31A. If the straight line L1 and the peripheral edge 31F are offset in the Z direction and do not intersect, the straight line L1 may be translated in the Z direction so that it intersects the peripheral edge 31F, and the point where the translated straight line intersects the peripheral edge 31F may be defined as the upper end point P1. Furthermore, when viewed from the Z direction, the unit length is defined as 1 / 18 of the total length of the periphery 31F of the frame member 30. Then, the upper section A1 is defined as the section along the periphery 31F that includes the upper end point P1, from position P1a, which is a unit length away from the upper end point P1 in one direction along the periphery 31F (for example, clockwise around the center Q in Figure 5), to position P1b, which is a unit length away from the upper end point P1 in the other direction along the periphery 31F (for example, counterclockwise around the center Q in Figure 5).

[0055] (Lower End Point and Lower Section) Similarly, when viewed from the Z direction, the line passing through the center Q and extending along the Y direction toward the Y2 direction, in other words, the line extending from the center Q toward the lower edge 1b of the surface 10A of the glass member 10 (see Figure 2), is defined as line L2. When viewed from the Z direction, the intersection point of the periphery 31F of the frame member 30 and line L2 is defined as the lower end point P2. If line L2 and the periphery 31F are offset in the Z direction and do not intersect, line L2 may be translated in the Z direction so that it intersects the periphery 31F, and the point where the translated line intersects the periphery 31F may be defined as the lower end point P2. Then, the section along the periphery 31F that includes the lower end point P2, from position P2a, which is a unit length away from the lower end point P2 in one direction along the periphery 31F (for example, clockwise around the center Q in Figure 5), to position P2b, which is a unit length away from the lower end point P2 in the other direction along the periphery 31F (for example, counterclockwise around the center Q in Figure 5), is defined as the lower section A2.

[0056] (Step) As shown in Figures 6 and 7A, the step D is defined as the distance in the Z direction between the end face 31A of the frame member 30 and the surface 10A of the glass member 10. Here, the step D refers to the distance in the Z direction between a point on the peripheral edge 31F of the frame member 30 and a point P0 on the inner peripheral edge 19F of the glass member 10, which lies on the same straight line as the point on the peripheral edge 31F. The inner peripheral edge 19F refers to the boundary portion between the surface 10A and the inner peripheral surface 19C, but if a chamfered portion 19D is formed as in Figure 6, for example, it refers to the boundary portion between the surface 10A and the chamfered portion 19D. Point P0 refers to the intersection point of the straight line passing through the point on the peripheral edge 31F and the center Q, and the inner peripheral edge 19F. That is, for example, the step D at the upper end point P1 refers to the distance in the Z direction between the upper end point P1 on the end face 31A and the intersection point of the straight line L1 and the inner peripheral edge 19F. If the inner perimeter 19F and the straight line do not intersect, the straight line may be translated in the Z direction until it intersects the inner perimeter 19F, and the intersection point of the translated straight line and the inner perimeter 19F may be taken as point P0. Furthermore, the step difference between the surfaces of the vehicle glass 1 can be measured, for example, by irradiating a laser into the area enclosed by a line segment 10 mm radially inward from the inner perimeter of the end face 31A of the frame member 30 and a line segment 10 mm radially outward from the outer perimeter of the end face 31A of the frame member 30, using a laser displacement meter (Keyence Corporation, inline profile measuring instrument: LJ-X8200), within the entire area of ​​the end face 31A of the frame member 30, the surface 10A of the glass member 10, and the surface 20A of the transparent member 20, and obtaining a step difference profile.

[0057] (Step difference in upper and lower sections) The average value of step difference D in the upper section A1 and the lower section A2 (the average value of step difference D in the combined section of the upper and lower sections) is smaller than the average value of step difference D in the entire section of the periphery 31F. In other words, the step difference D in the upper section A1 and the lower section A2 is, on average, smaller than the step difference D in the entire section of the periphery 31F. The average value of step difference D here refers to the average value of step difference D at each point on the section in question, and may refer to the average value of step difference D at 10 points equidistant from each other on the section in question. Note that the average value of step difference D in the upper section A1 and the lower section A2 may be the average value of step difference D at 5 points equidistant from each other in the upper section A1 and step difference D at 5 points equidistant from each other in the lower section A2.

[0058] Thus, by making the step difference D in the upper section A1 and the lower section A2 small, it is possible to suppress the edges of the glass member 10 and the frame member 30 from protruding significantly in the Z1 direction in the upper section A1 and the lower section A2, and when the wiper wipes the surface of the vehicle glass 1 on the Z1 direction side, it is possible to suppress localized wear at the part of the wiper that comes into contact with the upper section A1 and the lower section A2. Furthermore, in this embodiment, since the glass member 10 is curved to protrude in the Z1 direction, it is not possible to make the step difference D constant over the entire length of the peripheral edge 31F of the frame member 30, and there is a risk of wiper wear occurring in parts where the step difference D is large. Moreover, as a result of diligent research, the inventors have found that localized wear is likely to occur in the upper section A1 and the lower section A2. For example, in the area where the frame member 30 is provided, the wiper may move in the X direction relative to the vehicle glass 1, and the wiper will come into localized contact with the upper section A1 and the lower section A2 on the Y direction side. In contrast, by reducing the step difference D between the upper section A1 and the lower section A2, as in this embodiment, localized wear of the wiper can be appropriately suppressed.

[0059] The average value of the step difference D in the upper section A1 and the lower section A2 is preferably 0.3 mm or less, more preferably 0.15 mm or less, and even more preferably 0.1 mm or less. By having the step difference D in the upper section A1 and the lower section A2 within this range, localized wear of the wiper can be suppressed more effectively. The average value of the step difference D in the upper section A1 and the lower section A2 is preferably small, but may be, for example, 0.01 mm or more. In this embodiment, the upper and lower limits can be combined as appropriate.

[0060] Furthermore, among the points in the upper section A1 and the lower section A2, the position where the step difference D is smallest is defined as the minimum position. In this case, it is preferable that the step difference D at the minimum position is also smallest throughout the entire section of the peripheral edge 31F. That is, it is preferable that there are no locations throughout the entire section of the peripheral edge 31F where the step difference is smaller than that at the minimum position in the upper section A1 and the lower section A2. This allows for more effective suppression of localized wear of the wiper.

[0061] (Step difference in the upper section) The average value of the step difference D in the upper section A1 is smaller than the average value of the step difference D in the section of the peripheral edge 31F excluding the lower section A2. In other words, the step difference D in the upper section A1 is smaller on average than the step difference D in the entire section excluding the lower section A2. This allows for appropriate suppression of localized wear at the point where the wiper contacts the upper section A1.

[0062] The average value of the step height D in the upper section A1 is preferably 0.3 mm or less, more preferably 0.15 mm or less, and even more preferably 0.1 mm or less. By having the step height D in the upper section A1 within this range, localized wear of the wiper can be more effectively suppressed. While a small average value of the step height D in the upper section A1 is preferable, it may be, for example, 0.01 mm or more.

[0063] (Step difference in the lower section) The average value of the step difference D in the lower section A2 is smaller than the average value of the step difference D in the section of the peripheral edge 31F excluding the upper section A1. In other words, the step difference D in the lower section A2 is smaller on average than the step difference D in the entire section excluding the upper section A1. This allows for appropriate suppression of localized wear at the point where the wiper contacts the lower section A2.

[0064] The average value of the step height D in the lower section A2 is preferably 0.3 mm or less, more preferably 0.15 mm or less, and even more preferably 0.1 mm or less. By having the step height D in the lower section A2 within this range, localized wear of the wiper can be more effectively suppressed. While a small average value of the step height D in the lower section A2 is preferable, it may be, for example, 0.01 mm or more.

[0065] (Step difference throughout the entire section) The average value of the step difference D throughout the entire section of the periphery 31F is preferably 1.0 mm or less, more preferably 0.02 mm or more and 0.5 mm or less, and even more preferably 0.05 mm or more and 0.3 mm or less. By having the average value of the step difference D throughout the entire section be within this range, wiper wear can be appropriately suppressed, while also suppressing a decrease in the wiper wiping performance of the transparent member 20 due to the frame member 30 and the transparent member 20 being recessed too much compared to the glass member 10.

[0066] (Step at the innermost point) The innermost point is defined as the point located furthest towards the Z2 direction within the entire section of the peripheral edge 31F. The innermost point may be located further towards the Z2 direction than the surface 10A of the glass member 10, in other words, it may be recessed below the surface 10A of the glass member 10. In this case, the step D at the innermost point is preferably 0.5 mm or less, more preferably 0.01 mm or more and 0.4 mm or less, and even more preferably 0.02 mm or more and 0.3 mm or less. By having the step D at the innermost point within this range, it is possible to suppress the reduction in the wiper wiping performance of the transparent member 20 caused by the frame member 30 and the transparent member 20 being recessed too much below the glass member 10.

[0067] (Step at the Foremost Point) The foremost point is defined as the point located furthest towards the Z1 direction within the entire length of the peripheral edge 31F. The foremost point may be located further towards the Z1 direction than the surface 10A of the glass member 10, or in other words, it may protrude beyond the surface 10A of the glass member 10. In this case, the step D at the foremost point is preferably 1.5 mm or less, more preferably 0.01 mm or more and 1.3 mm or less, and even more preferably 0.02 mm or more and 1 mm or less. By having the step D at the foremost point within this range, the frame member 30 is prevented from protruding too much, and wiper wear can be appropriately suppressed.

[0068] (Positional relationship between frame member and glass member in the Z direction) Preferably, the end face 31A of the frame member 30 is flush with the surface 10A of the glass member 10, or protrudes in the Z1 direction from the surface 10A of the glass member 10, in at least a portion of the entire circumference along the peripheral edge 31F. This prevents the glass member 10 from protruding from the frame member 30 around its entire circumference, and prevents wear of the wiper by the edge of the glass member 10. Note that when the end face 31A is flush with the surface 10A, it means that a target point on the peripheral edge 31F and a point P0 on the inner peripheral edge 19F which lies on the same straight line as that point are in the same position in the Z direction. Also, when the end face 31A is on the Z1 direction side of the surface 10A, it means that a target point on the peripheral edge 31F is in the Z1 direction further than a point P0 on the inner peripheral edge 19F which lies on the same straight line as that point.

[0069] Furthermore, as shown in Figure 5, when viewed from the Z direction, the straight line passing through the center Q and along the X direction, in other words, the straight line from the center Q toward the side edge 1c or side edge 1d (see Figure 2) of the surface 10A of the glass member 10, is defined as straight line L3. When viewed from the Z direction, the intersection point of straight line L3 and the outer peripheral edge 31F of the end face 31A of the frame member 30 is defined as the lateral endpoint P3. Furthermore, the section along the peripheral edge 31F that includes the lateral endpoint P3, from a position a unit length away from the lateral endpoint P3 in one direction along the peripheral edge 31F to a position a unit length away from the lateral endpoint P3 in the other direction along the peripheral edge 31F, is defined as the lateral section A3. In this embodiment, the end face 31A of the frame member 30 is located on the Z1 side of the surface 10A of the glass member 10 at the lateral endpoint P3. Furthermore, in this embodiment, the end face 31A of the frame member 30 is located on the Z1 side of the surface 10A of the glass member 10 in the lateral section A3. In this way, in the horizontal section A3, where the step D is larger than in the upper section A1 and the lower section A2, the frame member 30 protrudes in the Z1 direction relative to the glass member 10, thereby reducing the average value of the step over the entire peripheral edge 31F, and suppressing overall wear of the wiper.

[0070] Furthermore, it is preferable that the end face 31A of the frame member 30 is flush with the surface 10A of the glass member 10 at the upper end point P1 and the lower end point P2. It is also preferable that the end face 31A of the frame member 30 is flush with the surface 10A of the glass member 10 in the upper section A1 and the lower section A2. In this way, by not protruding in the Z1 direction relative to the glass member 10 in the upper section A1 and the lower section A2 where the step D is small, it is possible to suppress the glass member 10 from protruding too much in the Z1 direction over the entire length of the periphery 31F, and the overall wear of the wiper can also be suppressed. However, the positional relationship in the Z direction between the end face 31A of the frame member 30 and the surface 10A is not limited to this, for example, the end face 31A of the frame member 30 may protrude further in the Z1 direction than the surface 10A of the glass member 10 at the upper end point P1 and the lower end point P2, or it may protrude further in the Z1 direction than the surface 10A of the glass member 10 in the upper section A1 and the lower section A2.

[0071] (Transparent Member and Frame Member) In this embodiment, the outer peripheral surface 21 of the transparent member 20 and the inner peripheral surface 31E of the frame member 30 are in contact. However, the outer peripheral surface 21 and the inner peripheral surface 31E are not limited to being in direct contact without other members in between, but may be bonded via an adhesive layer. That is, in this case, an adhesive layer may be provided between the outer peripheral surface 21 and the inner peripheral surface 31E, and the outer peripheral surface 21 and the inner peripheral surface 31E may be bonded via this adhesive layer. In this case, the adhesive layer may be made of the same material as the adhesive layer 50 or adhesive layer 52 described above. Furthermore, the outer peripheral surface 21 and the inner peripheral surface 31E are not limited to being in contact or bonded, and a gap may be formed between the outer peripheral surface 21 and the inner peripheral surface 31E. If a gap is formed, it is preferable that the maximum radial distance between the outer peripheral surface 21 and the inner peripheral surface 31E is 0.5 mm or less.

[0072] Figure 8 is a schematic enlarged cross-sectional view of the transparent member and the frame member. Preferably, the surface 20A of the transparent member 20 is flush with the end face 31A of the frame member 30, or protrudes in the Z1 direction from the end face 31A of the frame member 30. This prevents the transparent member 20 from being recessed in the Z2 direction from the frame member 30, thereby suppressing a decrease in the wiper wiping performance of the transparent member 20. Note that flush means that the step E, which will be described later, is 0 mm.

[0073] When the surface 20A of the transparent member 20 protrudes in the Z1 direction beyond the end face 31A of the frame member 30, the step difference E between the surface 20A of the transparent member 20 and the end face 31A of the frame member 30 is preferably greater than 0 mm and 0.3 mm or less, more preferably between 0.01 mm and 0.25 mm, and even more preferably between 0.02 mm and 0.2 mm. Having the step difference E within this range helps to suppress a decrease in the wiper wiping performance of the transparent member 20. Note that, as shown in Figure 8, the step difference E refers to the distance in the Z direction between a point R on the inner peripheral edge of the frame member 30 and a point 20P on the outer peripheral edge of the transparent member 20. The inner peripheral edge of the frame member 30 refers to the boundary portion between the end face 31A and the inner peripheral surface 31E of the frame member 30. However, if a chamfered portion is formed between the end face 31A and the inner peripheral surface 31E, for example, it refers to the boundary portion between the end face 31A and the chamfered portion. Furthermore, the outer edge of the transparent member 20 refers to the boundary portion between the surface 20A and the outer surface 21 of the transparent member 20. However, if, for example, a chamfered portion is formed between the surface 20A and the outer surface 21, it refers to the boundary portion between the surface 20A and the chamfered portion.

[0074] (Far-infrared transmission region) Next, the far-infrared transmission region B will be described. As shown in Figure 2, the far-infrared transmission 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. The opening 19 and the transmission 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.

[0075] As shown in Figure 3, the transmissive member 20 of the far-infrared transmission region B has a length DA of the longest straight line connecting any two points in the plane on the Z1 side that is 80 mm or less. The length DA is preferably 70 mm or less, more preferably 65 mm or less, and even more preferably 50 mm or less. The length DA is preferably 25 mm or more, more preferably 30 mm or more, and even more preferably 35 mm or more. The opening 19 of the far-infrared transmission region B preferably has a length DB of the longest straight line connecting any two points in the plane on the Z1 side that is 84 mm or less. The length DB is more preferably 74 mm or less, even more preferably 69 mm or less, and even more preferably 54 mm or less. The length DB is preferably 29 mm or more, more preferably 34 mm or more, and even more preferably 39 mm or more. By setting the length DA of the transparent member 20 and the length DB of the opening 19 within this range, it is possible to maintain the image quality of the far-infrared camera CA1 while suppressing a decrease in the strength of the vehicle glass 1 and suppressing the amount of transparency distortion around the opening 19. Furthermore, considering the expansion of each material within the operating temperature range, appropriate lengths DA and DB are determined so that distortion does not occur. In addition, a gap may be provided in advance as a countermeasure against distortion due to expansion. If the shape of the Z1-side surface of the transparent member 20 is circular, lengths DA and DB correspond to the diameter of the Z1-side surface. Here, lengths DA and DB refer to the lengths of the vehicle glass 1 when it is mounted on the vehicle V. For example, if the glass is bent to form the shape for mounting on the vehicle V, lengths DA and DB will be the lengths after bending. The same applies to the explanation of dimensions and positions other than lengths DA and DB unless otherwise specified.

[0076] (Visible Light Transmission Region) Next, the visible light transmission region C will be described. As shown in Figure 2, it is preferable that the visible light transmission region C be located near the far-infrared transmission region B. 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. If the shortest distance between the far-infrared transmission region B (aperture 19) and the visible light transmission region C as viewed from the Z direction is defined as distance L, then it is preferable that 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, and enabling the visible light camera CA2 to capture images appropriately. By capturing images of nearby locations with the far-infrared camera CA1 and the visible-light camera CA2, the processing load on the data obtained from each camera is reduced, and the routing of power and signal cables is also optimized.

[0077] 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 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.

[0078] Preferably, the visible light transmission region C is located near the upper edge 1a in the Y direction and near the far infrared transmission region B in the X direction, similar to the far infrared transmission region B. By positioning the visible light transmission region C in this location, it is possible to capture images of close positions 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.

[0079] (Camera Unit Configuration) Next, the configuration of the camera unit 100, more specifically, an example of the configuration when the far-infrared camera CA1 is attached to the vehicle glass 1, will be described. Figure 9 is a diagram showing an example of the configuration when the far-infrared camera is attached to the vehicle glass.

[0080] As shown in Figure 9, the far-infrared camera CA1 is mounted on the vehicle glass 1 so as to be able to 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. The type of far-infrared camera CA1 is not particularly limited, and any known far-infrared camera can be used. As shown in Figure 9, the far-infrared camera CA1 is mounted on the vehicle glass 1 by, for example, a bracket 40. The far-infrared camera CA1 is usually mounted so that the optical axis LX is approximately horizontal.

[0081] The visible light camera CA2 is mounted on the vehicle glass 1 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.

[0082] (First Modification) Next, a first modification of the above-described embodiment will be explained. Figure 10A is a cross-sectional view of the vehicle glass according to the first modification. In the first modification, the parts that have the same configuration as the above-described embodiment will not be explained.

[0083] In the above-described embodiment, the glass member 10 was curved more in the X direction than in the Y direction, but in the first modified example, the glass member 10 is curved more in the Y direction than in the X direction. That is, in the first modified example, the radius of curvature of the glass member 10 in the Y cross-section (cross-section in Figure 6) is smaller than the radius of curvature of the glass member 10 in the X cross-section (cross-section in Figure 10A).

[0084] As shown in Figure 10A, in the first modified example, the end face 31A of the frame member 30 is located on the Z2 side of the surface 10A of the glass member 10 at the lateral endpoint P3. Also in the first modified example, the end face 31A of the frame member 30 is located on the Z2 side of the surface 10A of the glass member 10 in the lateral section A3. In this way, even when the frame member 30 is recessed on the Z2 side of the glass member 10 in the lateral section A3, the difference in height between the upper section A1 and the lower section A2 is small, similar to the embodiment described above, so localized wear of the wiper can be suppressed.

[0085] Figure 10B is a cross-sectional view of a vehicle glass according to another example of the first modified example. In the example of Figure 10A, the chamfered portion 19D is flat when viewed from a direction perpendicular to the Z direction (i.e., C chamfer), as in the embodiment described above. However, as in the other example of the embodiment described above, the chamfered portion 19D in the first modified example may also be curved when viewed from a direction perpendicular to the Z direction (i.e., R chamfer), as shown in Figure 10B.

[0086] (Second Modification) Next, a second modification will be described. Figure 11 is a cross-sectional view of a vehicle glass according to the second modification. In the second modification, the parts that are the same as those in the above-described embodiment will not be described. Note that the second modification is also applicable to the first modification. That is, in the second modification, similar to the first modification, the glass member 10 is curved more significantly in the Y direction, and the frame member 30 may be recessed in the Z2 direction side than the glass member 10 at the lateral endpoint P3 and the lateral section A3.

[0087] As shown in Figure 11, in the second modification, the surface 20A of the transparent member 20 protrudes in the Z1 direction more than the surface 10A of the glass member 10. In the second modification, the end face 31A of the frame member 30 includes an inclined region AR1. The inclined region AR1 is a region of the entire end face 31A that slopes in the Z1 direction as it moves radially inward (towards the Y2 direction in the example of Figure 11). In other words, the inclined region AR1 slopes in the Z1 direction as it moves radially inward with respect to a plane parallel to the surface 20A of the transparent member 20. That is, the end face 31A of the frame member 30 has an inclined region AR1 formed between a point P on the outer peripheral edge 31F and a point R on the inner peripheral edge, which slopes in the Z1 direction as it moves from point P to point R. Note that point P on the end face 31A is located in the Z direction such that there is a step D with respect to the surface 10A of the glass member 10, similar to the embodiment described above. Furthermore, point R on the end face 31A is located in the Z direction such that it forms a step E with respect to the surface 20A of the transparent member 20, similar to the embodiment described above.

[0088] By including the inclined region AR1 in this way, even when the surface 20A of the transparent member 20 protrudes more than the surface 10A of the glass member 10, it is possible to suppress the formation of a large step, thereby appropriately suppressing wiper wear and a decrease in wiping performance.

[0089] The length of the line connecting the outer peripheral edge to the inner peripheral edge of the end face 31A of the frame member 30 radially inward along the end face 31A (i.e., the length of the line connecting point P and point R along the end face 31A) is preferably 0.2 mm to 6 mm, more preferably 0.25 mm to 5 mm, and even more preferably 0.3 mm to 4 mm. By having the length from point P to point R within this range, the distance the wiper travels across the end face 31A of the frame member 30 is shortened, thereby appropriately suppressing a decrease in wiper wiping performance and wiper wear.

[0090] Also, the line connecting point P and point R is the line L. ＰＲLet's assume that point P is an outer peripheral point on the outer edge of the end face 31A of the frame member 30, and point R is an inner peripheral point located radially inward from point P on the inner peripheral edge of the end face 31A of the frame member 30 (the intersection point of the inner peripheral edge of the end face 31A and the line passing through point P and the center Q of the opening 19). In this case, the line L ＰＲ The angle θ2 between the surface 20A of the transparent member 20 and the end face 31A is preferably 70° or less, more preferably 5° to 65°, and even more preferably 10° to 60°. When the angle θ2 is within this range, the inclination of the end face 31A can be made smaller than the wiping angle of the wiper, and the decrease in wiper wiping performance can be suppressed more appropriately. The wiping angle of the wiper refers to the angle between the surface of the wiper that contacts the vehicle glass 1 and the surface of the vehicle glass 1.

[0091] In the example shown in Figure 11, the inclined region AR1 occupies the entire area of ​​the end face 31A. That is, in Figure 11, the entire area of ​​the end face 31A is inclined toward the Z1 direction as it moves radially inward. Also, in the example shown in Figure 11, the inclined region AR1 is flat. However, the inclined region AR1 may occupy only a part of the area of ​​the end face 31A, or it may be curved instead of flat. Other examples of end faces having an inclined region AR1 will be described below.

[0092] Figure 12 is a cross-sectional view of a vehicle glass according to a second modified example. The end face 31A may include an inclined region AR1 and a flat region AR2. The flat region AR2 is a region parallel to the surface 20A of the transparent member 20. By including the flat region AR2 in this way, the frame member 30 can function as a positioning element when attaching it to the transparent member 20 or the glass member 10, and the attachment of the frame member 30 can be facilitated.

[0093] In the example shown in Figure 12, flat regions AR2 are formed on the end face 31A on the side of point P and on the side of point R, and an inclined region AR1 is formed between the flat region AR2 on the side of point P and the flat region AR2 on the side of point R. The inclined region AR1 in Figure 12 is curved, and more specifically, it is a curved shape that is convex in the Z2 direction. By making the inclined region AR1 curved in this way, wiper wear and a decrease in wiping performance can be appropriately suppressed. Note that the inclined region AR1 is not limited to being a curved shape that is convex in the Z2 direction, but may also be a curved shape that is convex in the Z1 direction.

[0094] (Effects) The vehicle glass 1 according to the first aspect of this disclosure comprises a glass member 10 having an opening 19 that penetrates from the surface 10A on the first direction (Z1 direction) side along the thickness direction (Z direction) to the surface 10B on the second direction (Z2 direction) side opposite to the first direction; a transparent member 20 provided in the opening 19 that transmits far-infrared rays; and a frame member 30 provided between the inner circumferential surface 19C of the opening 19 and the outer circumferential surface 21 of the transparent member 20, which fixes the transparent member 20 to the glass member 10. The unit length is 1 / 18 of the total length of the outer peripheral edge 31F of the end face 31A on the Z1 direction side of the frame member 30. Furthermore, the intersection point of the straight line L1 extending from the center Q of the Z1-direction surface 20A of the transparent member 20 to the upper edge (upper edge portion 1a) of the surface 10A of the glass member 10 and the peripheral edge 31F of the frame member 30 is defined as the upper endpoint P1. The upper section A1 is defined as the section along the peripheral edge 31F of the frame member 30 that passes through the upper endpoint P1, from position P1a, which is a unit length away from the upper endpoint P1 in one direction along the peripheral edge 31F of the frame member 30, to position P1b, which is a unit length away from the upper endpoint P1 in the other direction along the peripheral edge 31F of the frame member 30. Furthermore, the intersection point P2 of the straight line L2 extending from the center Q of the transparent member 20 to the lower edge (lower edge portion 1b) of the surface 10A of the glass member 10 and the peripheral edge 31F of the frame member 30 is defined as the lower end point P2. The lower section A2 is defined as the section along the peripheral edge 31F that passes through the lower end point P2, from a position unit length away from the lower end point P2 in one direction along the peripheral edge 31F to a position unit length away from the lower end point P2 in the other direction along the peripheral edge 31F. In this case, the average value of the step difference D in the Z direction between the end face 31A of the frame member 30 and the surface 10A of the glass member 10 in the upper section A1 and the lower section A2 is smaller than the average value of the step difference D over the entire section of the peripheral edge 31F. In this way, the small step difference D in the upper section A1 and the lower section A2 can suppress localized wear of the wiper when wiping the surface of the vehicle glass 1 on the Z1 direction side with the wiper.

[0095] The vehicle glass 1 according to the second aspect of this disclosure is the vehicle glass 1 according to the first aspect, wherein the average value of the step difference D in the upper section A1 is smaller than the average value of the step difference D in the section excluding the lower section A2 of the peripheral edge 31F of the frame member 30. According to this disclosure, localized wear of the wiper can be suppressed.

[0096] The vehicle glass 1 according to the third aspect of this disclosure is the vehicle glass 1 according to the first or second aspect, wherein the average value of the step D in the lower section A2 is smaller than the average value of the step D in the section excluding the upper section A1 of the periphery 31F of the frame member 30. According to this disclosure, localized wear of the wiper can be suppressed.

[0097] 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 position where the step difference D is smallest in the upper section A1 and the lower section A2 is also where the step difference D is smallest over the entire periphery 31F of the frame member 30. According to this disclosure, localized wear of the wiper can be suppressed.

[0098] 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 if the intersection point P3 of the straight line L3 extending from the center Q of the transparent member 20 to the side edge (side edge portion 1c) of the glass member 10 and the peripheral edge 31F of the frame member 30 is taken as the lateral endpoint P3, then the end face 31A of the frame member 30 protrudes in the Z1 direction at the lateral endpoint P3 compared to the surface 10A of the glass member 10. According to this disclosure, since the frame member 30 protrudes in the Z1 direction in sections where the step D is large, the average value of the step over the entire section can be reduced, and wiper wear can be suppressed.

[0099] 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 end face 31A of the frame member 30 is flush with the surface 10A of the glass member 10 at the upper end point P1 and the lower end point P2. According to this disclosure, the amount of protrusion of the glass member 10 can be suppressed over the entire section, and wiper wear can be suppressed.

[0100] The vehicle glass 1 according to the seventh aspect of this disclosure is the vehicle glass 1 according to any of the first to sixth aspects, wherein the average value of the step difference D in the upper section A1 and the lower section A2 is 0.3 mm or less. According to this disclosure, localized wear of the wiper can be suppressed.

[0101] The eighth aspect of this disclosure is a vehicle glass 1 according to any of the first to seventh aspects, wherein the average value of the step D over the entire periphery of the frame member 30 is 1.0 mm or less. According to this disclosure, wiper wear can be suppressed.

[0102] 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 when the point furthest to the Z2 direction within the entire periphery of the frame member 30 is defined as the innermost point, the innermost point is located on the Z2 direction side of the surface 10A on the Z1 direction side of the glass member 10, and the step D at the innermost point is 0.5 mm or less. According to this disclosure, wiper wear can be suppressed.

[0103] The vehicle glass 1 according to the tenth aspect of this disclosure is a vehicle glass 1 according to any of the first to ninth aspects, wherein the glass member 10 has a convex shape that protrudes in the Z1 direction. If the glass member 10 is curved to protrude in the Z1 direction, it is not possible to keep the step difference D constant over the entire length of the peripheral edge 31F of the frame member 30, and wiper wear may occur in the parts where the step difference D is large. In contrast, according to this disclosure, localized wear can be effectively suppressed by reducing the step difference D in the upper section A1 and the lower section A2.

[0104] The vehicle glass 1 according to the eleventh aspect of this disclosure is the vehicle glass 1 according to any of the first to tenth aspects, wherein the width W at the end face 31A of the frame member 30 is 0.2 mm or more and 4.0 mm or less. By having the width W of the wall portion 31 within this range, the transparent member 20 can be properly fixed without making the area where visible light and far infrared light cannot be transmitted excessively large.

[0105] The vehicle glass 1 according to the twelfth aspect of this disclosure is a vehicle glass 1 according to any of the first to eleventh aspects, wherein a chamfer with a radius of curvature of 0.01 mm or more and 5.0 mm or less is formed at the boundary between the end face 31A and the outer peripheral surface 31C of the frame member 30. This allows for appropriate suppression of wiper wear.

[0106] 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 a chamfer with a width of 0.1 mm or more and 1.0 mm or less is formed at the boundary between the surface 10A of the glass member 10 and the inner circumferential surface 19C of the opening 19. This allows for appropriate suppression of wiper wear.

[0107] 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 surface 20A of the transparent member 20 on the Z1 direction side protrudes in the Z1 direction more than the end face 31A of the frame member 30, and the step difference E in the Z direction (thickness direction) between the end face 31A of the frame member 30 and the surface 20A of the transparent member 20 on the Z1 direction side is greater than 0 mm and 0.3 mm or less. This makes it possible to appropriately suppress wiper wear while suppressing a decrease in wiper wiping performance.

[0108] The vehicle glass 1 according to the 15th aspect of this disclosure is a vehicle glass 1 according to any of the 1st to 14th aspects, wherein the surface 20A of the transparent member 20 on the Z1 direction side protrudes in the Z1 direction more than the surface 10A of the glass member 10 on the Z1 direction side, and the end face 31A of the frame member 30 includes an inclined region AR1 that slopes in the Z1 direction side as it moves radially inward. This makes it possible to appropriately suppress wiper wear while suppressing a decrease in wiper wiping performance.

[0109] The vehicle glass 1 according to the 16th aspect of this disclosure is the vehicle glass 1 according to the 15th aspect, wherein the inclined region AR1 is curved. This makes it possible to appropriately suppress wiper wear while suppressing a decrease in wiper wiping performance.

[0110] The vehicle glass 1 according to the 17th aspect of this disclosure is the vehicle glass 1 according to the 15th or 16th aspect, wherein the length of the line connecting the outer peripheral edge to the inner peripheral edge of the end face 31A of the frame member 30 radially inward along the end face 31A (length from point P to point R) is 0.2 mm or more and 6 mm or less. This makes it possible to appropriately suppress wiper wear while suppressing a decrease in wiper wiping performance.

[0111] The vehicle glass 1 according to the 18th aspect of this disclosure is a vehicle glass 1 according to any of the 15th to 17th aspects, wherein a point P on the outer peripheral edge of the outer circumference of the end face 31A of the frame member 30 is defined as the outer peripheral point, and a point R on the inner peripheral edge of the end face 31A of the frame member 30, radially inward from the outer peripheral point, is defined as the inner peripheral point, and a straight line L connecting the outer peripheral point and the inner peripheral point is defined as the outer peripheral point. ＰＲ The angle θ2 between the transparent member 20 and the surface 20A on the Z1 direction side is 70° or less. This allows for appropriate suppression of wiper wear while suppressing a decrease in wiper wiping performance.

[0112] The vehicle glass 1 according to the 19th aspect of this disclosure is a vehicle glass 1 according to any of the 1st to 18th aspects, wherein the outer peripheral surface 21 of the transparent member 20 and the inner peripheral surface 31E of the frame member 30 are in contact or bonded via an adhesive layer. This prevents dust and moisture from entering between the transparent member 20 and the frame member 30.

[0113] In addition, the vehicle glass 1 may also include a wiper for wiping the surface 10A of the glass member 10, in addition to the glass member 10, the transparent member 20, and the frame member 30. In this case, the wiper may be attached to the glass member 10 so as to move in the X direction while in contact with the surface 10A of the glass member 10, in the region of the surface 10A where the opening 19 is formed (to wipe in the X direction).

[0114] 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.

[0115] 1. Vehicle glass 10. Glass member 10A. Surface 19. Opening 19C. Inner circumferential surface 20. Transparent member 30. Frame member 31. Wall portion 31A. End face 31C. Outer circumferential surface 31F. Periphery A1. Upper section A2. Lower section D. Step P1. Upper endpoint P2. Lower endpoint

Claims

1. A vehicle glass comprising: a glass member having an opening formed therein that penetrates from the surface on the first direction side along the thickness direction to the surface on the second direction side opposite to the first direction; a transparent member provided within the opening that transmits far-infrared rays; and a frame member provided between the inner circumferential surface of the opening and the outer circumferential surface of the transparent member, which fixes the transparent member to the glass member, wherein the unit length of the frame member is 1 / 18 of the total length of the outer periphery of the first end face on the first direction side, the upper endpoint is defined as the intersection of a straight line extending from the center position of the surface on the first direction side of the transparent member to the upper edge of the surface of the glass member and the periphery of the frame member, and the upper section is defined as the section along the periphery of the frame member, including the upper endpoint, from a position a unit length away from the upper endpoint in one direction along the periphery of the frame member to a position a unit length away from the upper endpoint in the other direction along the periphery of the frame member, Vehicle glass, wherein the lower end point is defined as the intersection of a straight line extending from the center position of the transparent member to the lower edge of the surface of the glass member and the periphery of the frame member, and the lower section is defined as the section along the periphery of the frame member and including the lower end point, from a position a unit length away from the lower end point in one direction along the periphery of the frame member to a position a unit length away from the lower end point in the other direction along the periphery of the frame member, wherein the average value of the step difference in the thickness direction between the first end face of the frame member and the surface on the first direction side of the glass member in the upper section and the lower section is smaller than the average value of the step difference over the entire section of the periphery of the frame member.

2. The average value of the step in the upper section is smaller than the average value of the step in the section of the periphery of the frame member excluding the lower section, as described in claim 1.

3. The average value of the step height in the lower section is smaller than the average value of the step height in the section of the periphery of the frame member excluding the upper section, as described in claim 1.

4. The position in the upper section and the lower section where the step difference is smallest is also the position in the entire periphery of the frame member where the step difference is smallest, according to any one of claims 1 to 3.

5. The vehicle glass according to any one of claims 1 to 3, wherein, if the intersection point of a straight line extending from the center position of the transparent member toward the side edge of the glass member and the peripheral edge of the frame member is defined as the transverse endpoint, the first end face of the frame member protrudes toward the first direction at the transverse endpoint more than the surface of the glass member toward the first direction.

6. The first end face of the frame member is flush with the surface of the glass member on the first direction side at the upper and lower ends, according to any one of claims 1 to 3.

7. The average value of the step difference in the upper section and the lower section is 0.3 mm or less, the vehicle glass according to any one of claims 1 to 3.

8. The average value of the step difference over the entire periphery of the frame member is 1.0 mm or less, as described in any one of claims 1 to 3.

9. The vehicle glass according to any one of claims 1 to 3, wherein, when the point furthest to the second direction within the entire periphery of the frame member is defined as the innermost point, the innermost point is located on the second direction side of the surface of the glass member on the first direction side, and the step at the innermost point is 0.5 mm or less.

10. The vehicle glass according to any one of claims 1 to 3, wherein the glass member has a convex shape that protrudes toward the first direction.

11. The width of the first end face of the frame member is 0.2 mm or more and 4.0 mm or less, the vehicle glass according to any one of claims 1 to 3.

12. The vehicle glass according to any one of claims 1 to 3, wherein a chamfer with a radius of curvature of 0.01 mm or more and 5.0 mm or less is formed at the boundary between the first end face and the outer circumferential surface of the frame member.

13. The vehicle glass according to any one of claims 1 to 3, wherein a chamfer with a width of 0.1 mm or more and 1.0 mm or less is formed at the boundary between the surface of the glass member on the first direction side and the inner circumferential surface of the opening.

14. The surface of the transparent member on the first direction side protrudes in the first direction side more than the first end face of the frame member, and the difference in the thickness direction between the first end face of the frame member and the surface of the transparent member on the first direction side is greater than 0 mm and 0.3 mm or less, as described in any one of claims 1 to 3.

15. The surface of the transparent member on the first direction side protrudes further in the first direction than the surface of the glass member on the first direction side, and the first end face of the frame member includes an inclined region that slopes toward the first direction as it extends radially inward, the vehicle glass according to any one of claims 1 to 3.

16. The vehicle glass according to claim 15, wherein the inclined region is curved.

17. The vehicle glass according to claim 15, wherein the length of the line connecting the outer peripheral edge to the inner peripheral edge of the first end face of the frame member radially inward along the first end face is 0.2 mm or more and 6 mm or less.

18. The vehicle glass according to claim 15, wherein, if a point on the outer edge of the outer circumference of the first end face of the frame member is defined as the outer circumference point, and a point on the inner edge of the inner circumference of the first end face of the frame member, located radially inward from the outer circumference point, is defined as the inner circumference point, the angle between the straight line connecting the outer circumference point and the inner circumference point and the surface of the transparent member on the first direction side is 70° or less.

19. The vehicle glass according to any one of claims 1 to 3, wherein the outer circumferential surface of the transparent member and the inner circumferential surface of the frame member are in contact or bonded via an adhesive layer.

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