Vehicular glass

Abstract

According to the present invention, a far-infrared radiation transparent member is prevented from falling off without interfering with wiping by a wiper. This vehicular glass includes a glass member (10) in which an opening (19) that penetrates from a surface on a first direction side to a surface on a second direction side on the opposite side to the first direction is formed, a transparent member (20) that is disposed inside the opening (19) and that is transparent to far-infrared radiation, and a frame member (30) that holds an outer peripheral portion of the transparent member (20) and is attached to the opening (19), wherein, in the thickness direction of the transparent member (20), a step (D1) between a first surface (20A) of the transparent member (20) on the first direction side and the surface of the frame member (30) on the first direction side is 0.3 mm or less; an overlapping part (OL) in which an outer peripheral portion of the transparent member (20) and an inner peripheral portion of the frame member (30) overlap in a plan view seen from the thickness direction is provided on the first direction side of a second surface (20B) of the transparent member (20) on the second direction side; and a width (W) of the overlapping part (OL) in the direction along the first surface (20A) of the transparent member (20) is 0.1% or more and 50% or less of a maximum dimension (DC) of the first surface (20A) of the transparent member (20).

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] Infrared radiation is classified into near-infrared (e.g., wavelengths 0.83 μm to 2 μm), mid-infrared (e.g., wavelengths 3 μm to 5 μm), and far-infrared (e.g., wavelengths 8 μm to 13 μm) based on its wavelength range. Infrared sensors that detect these infrared rays include touch sensors, near-infrared cameras, and LiDAR for the near-infrared, gas analysis and mid-infrared spectroscopy (functional group analysis) for the mid-infrared, and night vision and thermoviewers (hereinafter referred to as far-infrared cameras) for the far-infrared.

[0004] By installing a far-infrared camera inside the vehicle, specifically within the wiper's operating area, the camera is protected by the window glass, and dirt and other contaminants can be wiped away, thus ensuring robustness, water resistance, and dust resistance. However, vehicle windows typically do not transmit far-infrared rays with wavelengths of 8 μm to 13 μm. Therefore, Patent Document 1 discloses a window member in which a through-hole is made in a part of the window glass and the through-hole is filled with an infrared-transmitting material.

[0005] UK Patent Application Publication No. 2271139

[0006] When a through-hole is drilled in a windowpane and filled with an infrared-transmitting member, as described in Patent Document 1, it is desirable to prevent the infrared-transmitting member from falling out to the outside of the vehicle when subjected to impact or other forces. To prevent the infrared-transmitting member from falling out to the outside of the vehicle, it is conceivable to place a member such as a stopper on the outer surface of the windowpane to hold the infrared-transmitting member in place. However, if a stopper is provided, the stopper will protrude from the surface of the windowpane, which will hinder wiping by the wiper.

[0007] The present invention has been made in view of the above problems, and aims to provide vehicle glass that can prevent the detachment of far-infrared transmitting members without hindering wiping by the wiper.

[0008] To solve the above-mentioned problems and achieve the objective, the vehicle glass according to this disclosure comprises a glass member having an opening formed that penetrates from the surface on the first direction side to the surface on the second direction side opposite to the first direction, a far-infrared emitting member disposed inside the opening, and a frame member that holds the outer periphery of the emitting member and is attached to the opening, wherein in the thickness direction of the emitting member, the step difference between the first surface on the first direction side of the emitting member and the first direction side of the frame member is 0.3 mm or less, and an overlap portion is provided on the first direction side of the second surface on the second direction side of the emitting member, such that in a plan view from the thickness direction, the outer periphery of the emitting member and the inner periphery of the frame member overlap, and the width of the overlap portion in the direction along the first surface of the emitting member is 0.1% or more and 50% or less of the maximum dimension of the first surface of the emitting member.

[0009] According to the present invention, it is possible to prevent the detachment of the far-infrared transmitting member without hindering wiping by the wiper.

[0010] Figure 1 is a schematic diagram showing the vehicle glass according to the first embodiment mounted on a vehicle. Figure 2 is a schematic plan view of the vehicle glass according to the first embodiment. Figure 3 is a cross-sectional view along line A-A in Figure 2. Figure 4 is a cross-sectional view along line B-B in Figure 2. Figure 5 is a diagram showing an example of a configuration when a far-infrared camera is attached to the vehicle glass. Figure 6 is an enlarged cross-sectional view of the periphery of the far-infrared transmission area in the vehicle glass. Figure 7 is a plan view and a cross-sectional view of the far-infrared transmission unit. Figure 8 is an enlarged cross-sectional view of the periphery of the overlapping portion of the transmission member and the frame member. Figure 9 is a schematic diagram illustrating an example of a method for manufacturing the vehicle glass according to the first embodiment. Figure 10 is an enlarged cross-sectional view of the periphery of the overlapping portion of the transmission member and the frame member in the vehicle glass according to the second embodiment. Figure 11 is an enlarged cross-sectional view of the periphery of the overlapping portion of the transmission member and the frame member in the vehicle glass according to the third embodiment. Figure 12 is an enlarged cross-sectional view of the periphery of the overlapping portion of the transmission member and the frame member in the vehicle glass according to the fourth embodiment. Figure 13 is an enlarged cross-sectional view of the area around the overlapping portion of the transparent member and frame member in a vehicle glass according to the fifth embodiment. Figure 14 is an enlarged cross-sectional view of the area around the overlapping portion of the transparent member and frame member in a vehicle glass according to the sixth embodiment. Figure 15 is an enlarged cross-sectional view of the area around the overlapping portion showing a first configuration example in which an adhesive layer is formed on the transparent member and frame member. Figure 16 is an enlarged cross-sectional view of the area around the overlapping portion showing a second configuration example in which an adhesive layer is formed on the transparent member and frame member. Figure 17 is an enlarged cross-sectional view of the area around the overlapping portion showing a third configuration example in which an adhesive layer is formed on the transparent member and frame member. Figure 18 is a schematic diagram showing a first modified example of the planar shape of the frame member and transparent member. Figure 19 is a schematic diagram showing a second modified example of the planar shape of the frame member and transparent member.

[0011] 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.

[0012] (First Embodiment) (Vehicle) Figure 1 is a schematic diagram showing the vehicle glass according to the first embodiment mounted on a vehicle. As shown in Figure 1, the vehicle glass 1 according to the first embodiment is mounted on a vehicle V. The vehicle glass 1 is a window member applied to the windshield of the vehicle V. That is, the vehicle glass 1 is used as the front windshield of the vehicle V, or in other words, as a windshield. Inside the vehicle V, a far-infrared camera CA1 and a visible light camera CA2 are mounted. The inside of the vehicle V refers to, for example, the interior of the vehicle where the driver's seat is located.

[0013] 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.

[0014] (Vehicle Glass) Figure 2 is a schematic plan view of vehicle glass according to the first embodiment. Figure 3 is a cross-sectional view along line A-A in Figure 2. Figure 4 is a cross-sectional view along line B-B in Figure 2. As shown in Figure 2, the upper edge of the vehicle glass 1 will be referred to as the upper edge portion 1a, the lower edge as the lower edge portion 1b, one side edge as the side edge portion 1c, and the other side edge as the side edge portion 1d. The upper edge portion 1a is the edge portion located on the vertically upper side when the vehicle glass 1 is mounted on the vehicle V. The lower edge portion 1b is the edge portion located on the vertically lower side when the vehicle glass 1 is mounted on the vehicle V. The side edge portion 1c is the edge portion located on one side when the vehicle glass 1 is mounted on the vehicle V. The side edge portion 1d is the edge portion located on the other side when the vehicle glass 1 is mounted on the vehicle V.

[0015] Hereinafter, among the directions parallel to the surface of the vehicle glass 1, the direction from the upper edge 1a to the lower edge 1b will be defined as the Y direction, and the direction from the side edge 1c to the side edge 1d will be defined as the X direction. In the first embodiment, the X direction and the Y direction are orthogonal. The direction perpendicular to the surface of the vehicle glass 1, that is, the thickness direction of the vehicle glass 1, will be defined as the Z direction. Furthermore, one direction along the Z direction will be defined as the Z1 direction (first direction), and the direction opposite to the Z1 direction will be defined as the Z2 direction (second direction). The Z1 direction 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 direction and the Y direction are along the surface of the vehicle glass 1, but for example, if the surface of the vehicle glass 1 is curved, they may be directions that are 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 central position of the vehicle glass 1 when viewed from the Z direction.

[0016] 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. 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.

[0017] 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.

[0018] 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.

[0019] As shown in Figure 3, the vehicle glass 1 comprises a glass member 10. The glass member 10 is the main body portion of the vehicle glass 1 that constitutes the windshield of the vehicle V. The glass member 10 may be single-pane glass or laminated glass, but in the first embodiment, the glass member 10 is made of laminated glass. Specifically, the glass member 10 comprises a glass substrate 12, a glass substrate 14, an intermediate layer 16, and a light-shielding layer 18. In the vehicle glass 1, the glass substrate 12, the intermediate layer 16, the glass substrate 14, and the light-shielding layer 18 are laminated in this order in the Z2 direction. The glass substrate 12 and the glass substrate 14 are fixed (bonded) to each other via the intermediate layer 16.

[0020] The glass substrates 12 and 14 may be inorganic glass or organic glass. As inorganic glass, for example, soda-lime glass, aluminosilicate glass, borosilicate glass, alkali-free glass, quartz glass, etc., can be used without particular limitation. Among these, soda-lime glass is particularly preferred in terms of manufacturing cost and moldability. For example, in the case of inorganic glass, glass plates formed by the float method or the like are preferred. When glass substrates 12 and 14 are inorganic glass, glass substrates 12 and 14 may be either untempered glass or tempered glass. Tempered glass may be either physically tempered glass or chemically tempered glass. Untempered glass is made by forming molten glass into a plate and slowly cooling it. Tempered glass is made by forming a compressive stress layer on the surface of untempered glass. Tempered glass may be either physically tempered glass or chemically tempered glass. In the case of physically strengthened glass, the glass surface may be strengthened by creating a compressive stress layer on the glass surface due to the temperature difference between the glass surface and the inside of the glass, through operations other than slow cooling, such as air-cooled strengthening, where a uniformly heated glass plate is rapidly cooled from a temperature near its softening point during bending. In the case of chemically strengthened glass, the glass surface may be strengthened after bending by creating compressive stress on the glass surface by methods such as ion exchange. Known molding techniques such as gravity molding, press molding, and roller molding may be used for bending the glass substrate. Glass that absorbs ultraviolet or infrared rays may also be used. Furthermore, the glass substrate 12 and the glass substrate 14 may be transparent or colored. The thickness of the glass substrate 12 and the 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 thickness of the glass substrate 12 and the 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 glass substrate 12 and the glass substrate 14 together.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 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 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. In this way, the vehicle glass 1 is a laminated glass in which the glass substrate 12 and the glass substrate 14 are laminated together. However, the vehicle glass 1 is not limited to laminated glass, and may be a configuration that includes only one of the glass substrate 12 and the glass substrate 14 (i.e., a single-pane glass). In this case, the intermediate layer 16 may not be provided. 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 glass substrates 12 and 14 are not distinguished, they will be referred to as the glass substrate. 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.

[0021] The light-shielding layer 18 is a layer that blocks visible light. The light-shielding layer 18 may be provided in a strip shape along the periphery of the vehicle glass 1. This suppresses the deterioration of aesthetics due to refraction of the glass substrates 12 and 14. As the light-shielding layer 18, for example, a ceramic light-shielding layer or a light-shielding film can be used. As the ceramic light-shielding layer, for example, a ceramic layer made of conventionally known materials such as a black ceramic layer can be used. As the light-shielding film, for example, a light-shielding polyethylene terephthalate (PET) film, a light-shielding polyethylene naphthalate (PEN) film, a light-shielding polymethyl methacrylate (PMMA) film, etc. can be used. The light-shielding layer 18 includes one surface 18A (the surface on the Z1 direction side) and the other surface 18B (the surface on the Z2 direction side). In the example of Figure 3, one surface 18A is in contact with and fixed to the other surface 14B of the glass substrate 14, but it is not limited to this. For example, the light-shielding layer 18 may be provided on the surface 12B of the glass substrate 12. That is, the light-shielding layer 18 may be provided on the surface 14B of the glass substrate 14, on the surface 12B of the glass substrate 12, or on both the surface 14B and the surface 12B.

[0022] In the first 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 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 glass substrates 12 and 14, the light-shielding layer 18 may be formed between the glass substrate 12 and the glass substrate 14. That is, the light-shielding layer 18 may be formed on, for example, the surface 12B or the surface 14A, or a part of the intermediate layer 16 may be the light-shielding layer 18. If a part of the intermediate layer 16 is the light-shielding layer 18, a part of the intermediate layer 16 may be colored with a dark pigment, or a layer containing a dark pigment may be provided in a part of the intermediate layer 16.

[0023] 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 a light-shielding layer 18. Specifically, the light-shielding region A2 is the region in which the glass substrate 12, the intermediate layer 16, the glass substrate 14, and the light-shielding layer 18 are laminated. On the other hand, the light-transmitting region A1 is the region in which the glass member 10 is not equipped with a light-shielding layer 18. Specifically, the light-transmitting region A1 is the region in which the glass substrate 12, the intermediate layer 16, and the glass substrate 14 are laminated, but the light-shielding layer 18 is not laminated.

[0024] 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 glass substrate 12, the intermediate layer 16, and the glass substrate 14 are laminated, and the light-shielding layer 18 is not laminated.

[0025] (Far-infrared transmitting unit) As shown in Figure 3, the glass member 10 has an opening 19 that penetrates from the inner surface (surface 18B in the Z2 direction) to the outer surface (surface 12A in the Z1 direction). A far-infrared transmitting unit U is provided inside 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 light-shielding layer 18 is not provided in the far-infrared transmitting region B. That is, in the far-infrared transmitting region B, the glass substrate 12, the intermediate layer 16, the glass substrate 14, and the light-shielding layer 18 are not provided, and the far-infrared transmitting unit U is provided in the formed opening 19.

[0026] The far-infrared transmission unit U comprises a transmission member 20 and a frame member 30 provided on the periphery of the transmission member 20. In the following description, the direction toward the geometric center when the transmission member 20 is viewed from the Z direction may be described as the radially inward direction, and the direction away from the geometric center may be described as the radially outward direction.

[0027] (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).

[0028] The material of the transmission member 20 is not particularly limited, and examples thereof include ZnS, Ge, Si, chalcogenide glass, and the like. A preferable composition of the chalcogenide glass is, in atomic percent, 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 transmission member 20 more preferably has at least one of Si and Ge as a main component. Here, the main component may refer to a content rate of 50% by mass or more with respect to the whole transmission member 20.

[0029] The transmission member 20 has a first surface 20A on the vehicle outer side (Z1 direction side), a second surface 20B on the vehicle inner side (Z2 direction side), and an outer peripheral end face 21. The transmission member 20 may be coated on the first surface 20A or the second surface 20B. For example, an antireflection film may be provided on the first 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 , ｘ , <00000f18>, ｙ , ｘ , ｙ , ｙ , ｘ , ｙ , ｘ , ｘ , ｘ , ｘ , ｘ , ｘ , ｘ S ｙ 、As ｘ Se ｙ 、metal oxides (Al ｘ O ｙ 、Bi ｘ O ｙ 、CeO ｘ 、CuO、HfO ｘ 、MgO、SiO、SiO ｘ 、NiO、TiO、TiO ｘ 、Ti ｘ O ｙ 、Y ｘ O ｙ 、ZrO ｘ ), hydrocarbon, diamond-like carbon (DLC), metal fluoride (MgF ｘ 、CaF ｘ 、SrF ｘ 、BaF ｘ 、PbFｘ 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.

[0030] The shape of the transparent member 20 is not particularly limited, but it is preferably a plate-like shape that matches the shape of the opening 19. That is, for example, if the opening 19 is circular, it is preferable that the transparent member 20 be disc-shaped (cylindrical). Also, from the viewpoint of design, the surface shape of the transparent member 20 on the Z1 direction side may be processed to match the curvature of the outer surface shape of the glass substrate 12. Furthermore, the transparent member 20 may be lens-shaped in order to achieve both a wider field of view of the far-infrared camera CA1 and improved mechanical properties. Such a configuration is preferable because it allows for efficient collection of far-infrared rays even with a small area of ​​the transparent member 20. In this case, the number of lens-shaped transparent members 20 is preferably one to three, and typically one is preferred. Furthermore, it is particularly preferable that the lens-shaped transparent member 20 is pre-aligned and modularized, and integrated with a housing or bracket 40 for bonding the far-infrared camera CA1 to the vehicle glass 1.

[0031] In the vehicle glass 1 of the first embodiment, the opening 19 on the surface (surface 18B) on the Z2 direction side has the same configuration as the opening 19 on the surface (surface 12A) on the Z1 direction side, but may have a different configuration. The shape of the transmissive member 20 may also have the same area on the surface on the Z2 direction side and the surface on the Z1 direction side, or may have different areas on the surface on the Z2 direction side and the surface on the Z1 direction side. In other words, no step is provided on the inner wall of the opening 19, and the inner wall of the opening 19 extends along the thickness direction of the vehicle glass. Furthermore, when the glass member 10 is a laminated glass including a glass substrate 12 (on the Z1 direction side) and a glass substrate 14 (on the Z2 direction side), the opening 19 is formed by overlapping the opening 12a of the glass substrate 12 and the opening 14a of the glass substrate 14. In this case, the opening 12a of the glass substrate 12 may be overlapped with the opening 14a of the glass substrate 14, and the transmissive member 20 having a size corresponding to the opening 12a of the glass substrate 12 may be disposed in the opening 12a of the glass substrate 12.

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

[0033] (Frame Member) The frame member 30 is positioned between the inner circumferential surface of the opening 19 of the glass member 10 and the transparent member 20. The frame member 30 holds the outer periphery of the transparent member 20 and is attached to the opening 19. The shape of the frame member 30 is not particularly limited, but if the transparent member 20 is disc-shaped, it is formed in a cylindrical shape and positioned on the periphery of the transparent member 20. The frame member 30 has a wall portion 31 positioned between the transparent member 20 and the glass member 10, and a flange portion 32 formed on the Z2 direction side relative to the wall portion 31. The wall portion 31 is interposed between the transparent member 20 and the glass member 10. 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 a second member including the flange 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 the first embodiment, the frame member 30 is composed of a single member including a wall portion 31 and a flange portion 32.

[0034] The wall portion 31 is formed in a cylindrical shape that surrounds the peripheral edge of the transparent member 20. The outer surface of the wall portion 31 faces the inner surface of the opening 19 of the glass member 10. The inner surface of the wall portion 31 faces the outer end surface of the transparent member 20. The length of the wall portion 31 in the Z direction is greater than or equal to the total thickness of the glass member 10. The surface of the wall portion 31 in the Z1 direction is exposed to the outside of the vehicle within the opening 19. The end of the wall portion 31 in the Z2 direction is connected to the flange portion 32.

[0035] The flange portion 32 extends radially outward from the end portion of the wall portion 31 in the Z2 direction. The flange portion 32 is provided on the entire circumference of the outer peripheral surface of the wall portion 31 and is ring-shaped. The flange portion 32 extends from the outer peripheral surface of the wall portion 31 to the radially outer side of the inner peripheral surface of the opening portion 19 of the glass member 10. That is, the outer dimension of the flange portion 32 is larger than that of the opening portion 19. When the frame member 30 is attached to the glass member 10, the flange portion 32 is disposed on the Z2 direction side with respect to the surface in the Z2 direction (surface 18B of the light shielding layer 18) of the glass member 10 and faces the surface 18B in the Z direction. An adhesive 50 is provided between the flange portion 32 and the surface 18B. The frame member 30 is attached to the opening portion 19 of the glass member 10 by the adhesive 50 at the flange portion 32. For example, the adhesive 50 is formed in a ring shape over the entire circumference of the flange portion 32. Thereby, the water-stopping property between the inner peripheral surface of the opening portion 19 and the frame member 30 is ensured.

[0036] 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.

[0037] The adhesive 50 between the frame member 30 and the glass member 10 is formed from an adhesive such as a urethane adhesive or a modified silicone adhesive. This improves load-bearing capacity, heat resistance, and cold resistance, and improves adhesive strength and shear strength.

[0038] (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.

[0039] 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.

[0040] (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.

[0041] 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.

[0042] 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.

[0043] (Camera Unit Configuration) Next, the configuration of the camera unit 100 of the first embodiment, more specifically, an example of the configuration when the far-infrared camera CA1 is attached to the vehicle glass 1 will be described. Figure 5 is a diagram showing an example of the configuration when the far-infrared camera is attached to the vehicle glass.

[0044] The far-infrared camera CA1 is mounted on the vehicle glass 1 so as 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 5, 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.

[0045] 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.

[0046] (Holding structure for the transparent member) Next, the details of the holding structure for the transparent member 20 by the frame member 30 will be described. Figure 6 is an enlarged cross-sectional view of the periphery of the far-infrared transmission area in vehicle glass. Figure 7 is a plan view and a cross-sectional view of the far-infrared transmission unit. Figure 8 is an enlarged cross-sectional view of the periphery of the overlapping portion of the transparent member and the frame member.

[0047] In the first embodiment, the transparent member 20 and the frame member 30 are provided with a structure to prevent the transparent member 20 from falling off. Specifically, an overlap portion OL is provided on the outside of the vehicle side of the second surface 20B on the vehicle side of the transparent member 20, where the outer circumference of the transparent member 20 and the inner circumference of the frame member 30 overlap in a plan view from the thickness direction (Z direction). In other words, in the overlap portion OL, the outer circumference of the transparent member 20 and the inner circumference of the frame member 30 are aligned in the Z direction. In this overlap portion OL, the frame member 30 holds the outer circumference of the transparent member 20.

[0048] The frame member 30 includes a retaining portion 33 located in the Z1 direction relative to the transparent member 20 in the overlap portion OL. The retaining portion 33 extends radially inward from the inner circumferential surface of the wall portion 31. The retaining portion 33 is an inner flange formed on the inner circumferential surface of the wall portion 31, and in the examples of Figures 6 to 8, it is ring-shaped. The retaining portion 33 extends radially inward from the outer end of the wall portion 31. The outer surface of the wall portion 31 and the outer surface of the retaining portion 33 form a continuous flat surface, constituting the outer surface 30A of the frame member 30. The retaining portion 33 may not be ring-shaped, and may be provided locally at one or more locations in the circumferential direction of the wall portion 31, or it may be provided intermittently (discontinuously) over the entire circumferential direction of the wall portion 31.

[0049] In the example shown in Figure 6, the outer periphery of the transparent member 20 and the holding portion 33 of the frame member 30 overlap on the outside (Z1 direction side) of the second surface 20B on the inside of the vehicle side of the transparent member 20. The outermost surface on the outside of the vehicle side in the overlapping portion OL is the surface of the holding portion 33.

[0050] Furthermore, in the example shown in Figure 6, a stepped portion 22 is provided on the outer periphery of the first surface 20A of the transparent member 20, recessed toward the second surface 20B side compared to the inner periphery of the frame member 30. In other words, the position of the third surface 22A, which is the surface on the outside of the vehicle (Z1 direction) of the stepped portion 22, is shifted in the Z2 direction compared to the first surface 20A in the far-infrared transmission region B on the inner periphery side of the stepped portion 22. The holding portion 33 of the frame member 30 is positioned on this stepped portion 22. The holding portion 33 of the frame member 30 is positioned in the Z1 direction relative to the third surface 22A of the stepped portion 22. The third surface 22A and the opposing surface 30B, which is the Z2 side surface of the holding portion 33 of the frame member 30, face each other in the Z direction.

[0051] Therefore, if the permeable member 20 attempts to move outwards (in the Z1 direction) due to an external force, the outer periphery (third surface 22A) of the permeable member 20 is locked in place by the holding portion 33 of the frame member 30 in the overlap portion OL. This prevents the permeable member 20 from falling outwards (in the Z1 direction) from the opening 19 (frame member 30).

[0052] In this embodiment, the width W of the overlap portion OL in the direction along the first surface 20A of the transparent member 20 is 0.1% or more and 50% or less of the maximum dimension DC of the first surface 20A of the transparent member 20. In the example of Figure 6, the width W of the overlap portion OL is the width between the inner circumference end of the holding portion 33 and the outer circumference end (outer circumference end face 21) of the transparent member 20 in a plan view of the first surface 20A of the transparent member 20 along the Z direction. The maximum dimension DC of the first surface 20A of the transparent member 20 is the maximum length of the line segment connecting two points on the outer circumference of the first surface 20A in a plan view of the first surface 20A along the Z direction. In the example of Figure 7, since the first surface 20A is circular, the maximum dimension DC of the first surface 20A is equal to the diameter of the first surface 20A. For example, if the transparent member 20 is square, the maximum dimension DC of the first surface 20A of the transparent member 20 is equal to the length of the diagonal of the transparent member 20. For example, if the transparent member 20 is elliptical, the maximum dimension DC of the first surface 20A of the transparent member 20 is equal to the length of the major axis of the transparent member 20. By having the width W of the overlap portion OL be 0.1% or more of the maximum dimension DC of the first surface 20A of the transparent member 20, the contact area (engagement) for locking the transparent member 20 with the frame member 30 can be increased. By having the width W of the overlap portion OL be 50% or less of the maximum dimension DC of the first surface 20A of the transparent member 20, the reduction in the far-infrared transmission region B can be suppressed. Therefore, the field of view size of the far-infrared camera CA1 can be ensured. The width W of the overlap portion OL is preferably 1% to 10% of the maximum dimension DC of the first surface 20A of the transparent member 20, and more preferably 1% to 5%.

[0053] Furthermore, the width W of the overlap portion OL is preferably, for example, 0.1 mm to 7 mm, more preferably 0.1 mm to 5 mm, and even more preferably 0.1 mm to 3 mm. By having the width W of the overlap portion OL within this range, it is possible to secure a contact area (engagement) for locking the transparent member 20 without excessively restricting the range of the far-infrared transmission region B.

[0054] Furthermore, the average thickness of the transparent member 20 in the overlap portion OL is preferably 1% to 75% of the maximum thickness tm of the transparent member 20, more preferably 1% to 50%, and even more preferably 1% to 25%. The average thickness of the transparent member 20 in the overlap portion OL is the average value of the Z-direction distance from the second surface 20B to the third surface 22A in the overlap portion OL. The maximum thickness tm of the transparent member 20 is the Z-direction distance between the position on the second surface 20B closest to the Z2 direction and the position on the first surface 20A closest to the Z1 direction. By having the average thickness of the transparent member 20 in the overlap portion OL within this range, it is possible to ensure load-bearing performance when an external force is applied to the transparent member 20 without reducing the far-infrared transmittance of the transparent member 20.

[0055] Furthermore, the average thickness of the frame member 30 in the overlap portion OL is preferably 1% to 75% of the maximum thickness tm of the permeable member 20, more preferably 1% to 50%, and even more preferably 1% to 25%. The average thickness of the frame member 30 in the overlap portion OL is the average value of the distance in the Z direction from the outer surface 30A of the frame member 30 to the Z-direction opposing surface 30B with the outer periphery of the permeable member 20 in the overlap portion OL. In the example of Figure 6, the opposing surface 30B is the Z2 direction surface of the holding portion 33, and the average thickness of the frame member 30 in the overlap portion OL corresponds to the thickness of the holding portion 33. By having the average thickness of the frame member 30 in the overlap portion OL within this range, load-bearing performance when an external force is applied to the permeable member 20 can be ensured without making the permeable member 20 excessively thick.

[0056] As shown in Figure 6, the wall portion 31 has a radial thickness tr. In the example in Figure 6, the thickness tr of the wall portion 31 is smaller than the width W of the overlap portion OL. This ensures that the field of view of the far-infrared camera CA1 can be maintained even when the overlap portion OL is provided.

[0057] In the example shown in Figure 6, the outer periphery of the transparent member 20 and the base portion 34 of the frame member 30 overlap on the interior side (thickness direction side) of the second surface 20B on the interior side of the transparent member 20.

[0058] The base portion 34 is located in the Z2 direction relative to the transparent member 20. The base portion 34 extends radially inward from the inner circumferential surface of the wall portion 31. The base portion 34 is an inner flange formed on the inner circumferential surface of the wall portion 31, and is ring-shaped in the examples shown in Figures 6 to 8. The base portion 34 may not be ring-shaped, and may be provided locally at one or more locations in the circumferential direction of the wall portion 31, or it may be provided intermittently (discontinuously) around the entire circumferential direction of the wall portion 31.

[0059] In Figure 6, the outer periphery of the second surface 20B of the transparent member 20 is flat, and there are no steps on the second surface 20B. In other words, the Z-direction position of the second surface 20B of the transparent member 20 is the same inside the far-infrared transmission region B and on the outer periphery outside the far-infrared transmission region B. The base portion 34 of the frame member 30 is positioned to overlap with the outer periphery of the second surface 20B. The base portion 34 is positioned in the Z2 direction relative to the second surface 20B. The second surface 20B and the Z1 side surface of the base portion 34 face each other in the Z direction.

[0060] Therefore, if the permeable member 20 attempts to move inward due to an external force, the outer periphery of the second surface 20B of the permeable member 20 is locked in place by the base portion 34. This prevents the permeable member 20 from falling outward (in the Z2 direction) from the opening 19 (frame member 30) towards the inside of the vehicle.

[0061] With this configuration, in the examples shown in Figures 6 to 8, the frame member 30 has a clamping structure SW that clamps the outer periphery of the transparent member 20 from both the outside and inside of the vehicle. The clamping structure SW is formed on the inner periphery of the wall portion 31. The clamping structure SW includes a holding portion 33 located in the Z1 direction relative to the transparent member 20 and a base portion 34 located in the Z2 direction relative to the transparent member 20. The holding portion 33 and the base portion 34 clamp the outer periphery of the transparent member 20, where the stepped portion 22 is provided, in the Z direction, thereby preventing the transparent member 20 from falling out to the outside of the vehicle and falling out to the inside of the vehicle.

[0062] In the permeable member 20, the opposing surface facing the frame member 30 in the overlap portion OL preferably has an arithmetic mean roughness Ra value of 0.1 μm or more. The arithmetic mean roughness Ra of the opposing surface is preferably 0.5 μm or more, and more preferably 1 μm or more. This increases the frictional resistance at the contact point between the permeable member 20 and the frame member 30 in the overlap portion OL, effectively preventing the permeable member 20 from falling out of the vehicle. In Figure 8, the opposing surface facing the frame member 30 in the overlap portion OL includes the outer peripheral end surface 21 of the permeable member 20, the third surface 22A on the Z2 direction side of the stepped portion 22, the fourth surface 22B on the radial direction side of the stepped portion 22, and the outer peripheral portion of the second surface 20B facing the base portion 34. Note that the arithmetic mean roughness Ra refers to the arithmetic mean roughness Ra specified in JIS B 0601:2001.

[0063] Furthermore, adhesive may be applied (or filled) at the boundary between the frame member 30 and the permeable member 20. That is, the adhesive may be placed so as to be in close contact with the inner circumferential surface of the clamping structure SW and the outer surface of the permeable member 20 on which the stepped portion 22 is formed. The frame member 30 and the permeable member 20 may be in direct contact or indirect contact via adhesive or other filler. The adhesive can suppress minute positional displacement between the frame member 30 and the permeable member 20 due to impact, etc., and can also improve watertightness between the frame member 30 and the permeable member 20. If the frame member 30 is ring-shaped, the adhesive may be placed so as to be continuous around the entire circumference of the boundary between the frame member 30 and the permeable member 20. This completely separates the boundary between the frame member 30 and the permeable member 20 into the outside and inside of the vehicle, thereby improving watertightness. The configuration of providing adhesive at the boundary between the frame member 30 and the permeable member 20 will be described later with reference to Figures 15 to 17.

[0064] (Step difference between each component) As shown in Figure 8, in the embodiment, the step difference D1 between the first surface 20A on the Z1 direction side (outside the vehicle) of the transparent member 20 and the surface 30A on the Z1 direction side of the frame member 30 in the thickness direction (Z direction) of the transparent member 20 is 0.3 mm or less. A step difference D1 of 0.2 mm or less is more preferable. A step difference D1 of 0.15 mm or less is more preferable. A step difference D1 of 0.1 mm or less is even more preferable. In other words, it is preferable that the first surface 20A on the Z1 direction side of the transparent member 20 and the surface 30A on the Z1 direction side of the frame member 30 are formed flush (continuously). Note that the first surface 20A of the transparent member 20 and the surface 30A on the Z1 direction side of the frame member 30 are surfaces exposed on the Z1 direction side in the vehicle glass 1. In this way, the first surface 20A on the Z1 direction side of the transparent member 20 and the surface 30A on the Z1 direction side of the frame member 30 are continuous, which helps to prevent the wiper's wiping effect from being impaired. In addition, because the step D1 is small, it is possible to prevent the step D1 from impairing the design of the vehicle V, and to prevent sand and dust from accumulating on the step D1.

[0065] Furthermore, in the embodiment, it is preferable that the step D2 between the Z1-side surface 12A of the glass member 10 and the Z1-side surface 30A of the frame member 30 in the thickness direction (Z direction) of the transparent member 20 is 1.0 mm or less. More preferably, the step D2 is 0.5 mm or less, and even more preferably 0.3 mm or less. More preferably, the step D2 is 0.15 mm or less, and even more preferably 0.1 mm or less. In other words, it is preferable that the Z1-side surface 12A of the glass member 10 and the Z1-side surface 30A of the frame member 30 are formed flush (continuously). By making the Z1-side surface 12A of the glass member 10 and the Z1-side surface 30A of the frame member 30 continuous in this way, it is possible to suppress the impairment of the wiper's wiping effect. Also, because the step D2 is small, it is possible to suppress the risk of the step D2 impairing the design of the vehicle V, and the accumulation of sand and dust on the step D2.

[0066] The height of the step D1 in the thickness direction between the first surface 20A of the transparent member 20 on the Z1 direction side and the surface 30A of the frame member 30 on the Z1 direction side can be measured, for example, using a laser displacement meter (Keyence Corporation, inline profile measuring instrument: LJ-X8200). This measurement is performed by irradiating a laser into a region enclosed by a line segment 10 mm radially inward from the inner peripheral edge of the surface 30A of the frame member 30 and a line segment 10 mm radially outward from the outer peripheral edge of the surface 30A of the frame member 30, and then measuring the step profile obtained. Note that the peripheral edges of the first surface 20A of the transparent member 20, the surface 30A of the frame member 30, and the surface 12A of the glass member 10 may be chamfered. In this case, the height of the steps D1 and D2 is the difference in the Z-direction position between the surface positions of the flat portion near the outer periphery, excluding the chamfered portion. The flat portion near the outer periphery is, for example, a flat portion within a radius of 1 mm from the chamfered portion.

[0067] The transparent member 20 may be molded to match the curved shape of the vehicle glass 1 to which it is applied. This allows the surface of the transparent member 20 to be aesthetically smooth. The method of forming the transparent member 20 is not particularly limited, but polishing or mold forming can be selected depending on the curved shape and the member. When the transparent member 20 is formed by polishing, it is desirable to polish the transparent member 20 in parallel to improve its flatness accuracy. This flatness accuracy is an indicator of the reflective surface accuracy at a measurement wavelength of 632.8 nm, and it is preferable that the number of Newton lines is 2 or less. The ass, which indicates the difference in the number of Newton lines in the vertical and horizontal directions, is preferably 0.5 or less, and the distortion, which indicates the local distortion of the Newton fringes, is preferably 0.5 or less. This allows the far-infrared camera CA1 to acquire far-infrared images without distortion. Here, the number of Newton lines, ass, and distortion can be measured according to the instructions of JIS B0091:2010 and ISO 14999-4:2007, and the number of fringes, wavelength, or nanometers are used as units.

[0068] (Method for manufacturing vehicle glass) The method for manufacturing vehicle glass 1 is not particularly limited, but one example is described below. Figure 9 is a schematic diagram illustrating an example of a method for manufacturing vehicle glass according to the first embodiment.

[0069] As shown in Figure 9, a far-infrared transmission unit U is prepared in which a transmission member 20 is held in a frame member 30 (step S10). For example, to make the far-infrared transmission unit U, a mold matching the completed far-infrared transmission unit U is prepared, the pre-fabricated transmission member 20 is placed in the mold, and a resin frame member 30 is formed around the transmission member 20 by injection molding (insert molding). In injection molding, the inner surface of the mold corresponding to the surface 30A of the frame member 30 is aligned with the first surface 20A of the transmission member 20, so that the step difference D1 between the first surface 20A of the transmission member 20 and the surface 30A of the frame member 30 is 0.3 mm or less. Alternatively, the frame member 30 is made into a split structure, and the split parts of the frame member 30 are attached to the pre-fabricated transmission member 20 from both radial sides, and then the split parts are fixed together by adhesive or screws. Alternatively, the frame member 30 can be divided into two separate parts: an outer portion including the holding portion 33 and an inner portion including the base portion 34. The divided part including the holding portion 33 is placed on the outer portion of the outer periphery of the pre-fabricated transparent member 20, and the divided part including the base portion 34 is placed on the inner portion of the outer periphery of the transparent member 20, and the divided parts are fixed together. During assembly, the step difference D1 between the first surface 20A of the transparent member 20 and the surface 30A of the frame member 30 is kept within 0.3 mm. For example, the first surface 20A and the surface 30A are brought into contact with a flat jig for alignment during assembly. By any of these methods, a far-infrared transmission unit U equipped with a transparent member 20 and a frame member 30 having an overlapping portion OL can be manufactured.

[0070] Next, a glass member 10 with an opening 19 is prepared, and the far-infrared transmitting unit U is placed inside the opening 19 (step S12). At this time, with adhesive 50 placed on the flange portion 32 of the frame member 30, the far-infrared transmitting unit U is inserted into the opening 19, so that the adhesive 50 is placed between the surface (surface 18B) of the glass member 10 on the Z2 direction side around the opening 19 and the flange portion 32 of the frame member 30. In addition, a jig 60 is placed on the surface 12A of the glass member 10 and the surface 30A of the frame member 30, either planar or shaped to match the curved shape of the surface 12A of the glass member 10, and the relative position of the far-infrared transmitting unit U in the Z direction with respect to the glass member 10 is adjusted so that the step difference D2 between the surface 12A of the glass member 10 and the surface 30A of the frame member 30 is within 1.0 mm.

[0071] Then, the adhesive 50 is cured while maintaining the relative position between the glass member 10 and the far-infrared transmitting unit U (step S14). The curing method for the adhesive 50 is determined according to the type (components) of adhesive 50 used. Curing methods include, for example, vaporizing the solvent over time, reacting with moisture in the air, curing by heating, melting the adhesive 50 by heating and then curing it as it cools, adding a curing agent, or irradiating with light such as ultraviolet light.

[0072] The above process completes the manufacturing of one example of vehicle glass 1.

[0073] Here, the glass member 10 according to the first embodiment can be manufactured, for example, by the following method. First, flat glass substrates 12 and 14 are prepared, and openings 12a and 14a are formed in them. Then, each of the flat glass substrates 12 and 14 with the openings 12a and 14a is bent to a shape that fits the windshield of the vehicle V. Then, the bent glass substrates 12 and 14 are joined together via an intermediate layer 16 to form laminated glass. After forming the laminated glass, the intermediate layer 16 may be removed by thermal or chemical means only in the portion that overlaps the openings 12a and 14a to create communication. The light-shielding layer 18 may be formed at any stage, for example, before bending. Also, the light-shielding layer 18 may not be formed at all. Furthermore, the opening 19 may be formed after joining the glass substrates 12 and 14. In the manufacturing of the glass component 10 in this case, flat glass substrates 12 and 14 are prepared, then a light-shielding layer 18, such as a black ceramic splice material, is applied to the glass substrate 14, and the glass substrates 12 and 14 are bent. Next, the bent glass substrates 12 and 14 are joined together via an intermediate layer 16 to form laminated glass. After that, openings 12a and 14a are formed in the laminated glass at the same time. This forms the opening 19.

[0074] (Second Embodiment) Figure 10 is an enlarged cross-sectional view of the area around the overlap portion of the transparent member and frame member in the vehicle glass according to the second embodiment. The vehicle glass 1 according to the second embodiment differs from the first embodiment in that the chamfered portion 121 of the transparent member 20 fits into the concave portion 131 of the frame member 30 in the overlap portion OL.

[0075] As shown in Figure 10, in the second embodiment, the transparent member 20 has a chamfered portion 121 on the outer circumference of the first surface 20A. The frame member 30 has a recessed portion 131 in the overlap portion OL into which the chamfered portion 121 fits. In the overlap portion OL, the chamfered portion 121 fits into the recessed portion 131, so that the Z1 direction side of the chamfered portion 121 is covered by a part of the frame member 30. Therefore, if the transparent member 20 tries to move outwards due to an external force, the transparent member 20 is locked in place by the frame member 30. This prevents the transparent member 20 from falling outwards from the opening 19 (frame member 30) to the outside of the vehicle.

[0076] The chamfered portion 121 is the part of the transparent member 20 where the corner between the first surface 20A and the outer peripheral end face 21 is removed in an oblique or curved shape. In the example of Figure 10, the chamfered portion 121 is formed by a C-chamfer where the corner is removed in an oblique straight line. The size of the chamfered portion 121 is not particularly limited, but it is preferable that the chamfered portion 121 is formed by a C-chamfer with a chamfer width Wc of 0.05 mm or more. By having a chamfer width Wc of 0.05 mm or more, a contact area (overlap) can be secured by the frame member 30 to prevent the transparent member 20 from falling out of the vehicle. The chamfer width Wc is more preferably 0.07 mm or more, and even more preferably 0.1 mm or more. The larger the chamfer width Wc, the larger the contact area between the frame member 30 and the chamfered portion 121 of the transparent member 20, thus improving the effect of preventing the transparent member 20 from falling out. On the other hand, the chamfer width Wc is preferably 1 mm or less, and more preferably 0.5 mm or less. By setting the chamfer width Wc within this range, the area of ​​the chamfered portion 121 within the transparent member 20 does not become excessively large, thus ensuring a sufficient area of ​​the far-infrared transmission region B. Furthermore, the chamfer width Wc is preferably 1% to 75% of the maximum thickness tm of the transparent member 20 (see Figure 6), more preferably 5% to 50%, and even more preferably 10% to 25%. By setting the chamfer width Wc within this range, an appropriate contact area (overlap) corresponding to the thickness of the transparent member 20 can be ensured.

[0077] The chamfer angle θ of the chamfered portion 121 is not particularly limited, but it is preferable that the chamfered portion 121 is formed with a C-chamfer where the chamfer angle θ is 0.1 degrees or more and less than 90 degrees. The chamfer angle θ is the inclination angle of the chamfered portion 121 with respect to the thickness direction (Z direction) of the transparent member 20, with the Z1 direction being 0 degrees. When the chamfer width Wc is constant, the smaller the chamfer angle θ, the larger the thickness of the frame member 30 in the overlap portion OL, and the load-bearing performance when an external force is applied to the transparent member 20 is improved. When the chamfer width Wc is constant, the larger the chamfer angle θ, the smaller the thickness of the frame member 30 in the overlap portion OL, and the total thickness of the transparent member 20 and the frame member 30 can be suppressed. By having the chamfer angle θ within the above range, a design can be achieved in which the total thickness is not excessively large while ensuring load-bearing performance. The chamfer angle θ is preferably 0.1 degrees or more, more preferably 0.5 degrees or more, and even more preferably 1 degree or more. Furthermore, the chamfer angle θ is preferably less than 90 degrees, more preferably 89 degrees or less, and even more preferably 45 degrees or less. In this embodiment, the upper and lower limits can be combined as appropriate. This makes it possible to achieve both load-bearing performance and a reduction in total thickness. The chamfer angle θ can be measured, for example, by irradiating the chamfered portion 121 with a laser using a laser displacement meter (Keyence Corporation, inline profile measuring instrument: LJ-X8200) and taking the obtained surface profile.

[0078] The concave portion 131 is recessed radially outward from the inner circumferential surface of the frame member 30. The concave portion 131 is formed in a concave shape corresponding to the cross-sectional shape of the chamfered portion 121. Therefore, the depth of the concave portion 131 and the inclination angle of the opposing surface 131A, which is the inner surface of the concave portion 131, are set according to the shape of the chamfered portion 121. As the opposing surface 131A of the frame member 30 is inclined to match the chamfered portion 121, the thickness in the Z direction of the overlap portion OL decreases as it moves radially inward. The frame member 30 covers the entire chamfered portion 121. As a result, the outer surface 30A of the frame member 30 and the first surface 20A of the transparent member 20, which is radially inward from the chamfered portion 121, become continuously substantially flush. In other words, the step difference D1 between the outer surface 30A of the frame member 30 and the first surface 20A of the transparent member 20 that is radially inward from the chamfered portion 121 is 0.3 mm or less. This prevents interference with wiping by the wiper.

[0079] It is preferable that the overlap portion OL is provided continuously around the entire circumference of the transparent member 20. In this case, the chamfered portion 121 is formed around the entire circumference of the outer periphery of the transparent member 20, and the concave portion 131 is formed around the entire circumference of the inner periphery of the frame member 30. This increases the contact area between the transparent member 20 and the frame member 30 due to the overlap portion OL.

[0080] (Third Embodiment) Figure 11 is an enlarged cross-sectional view of the area around the overlap portion of the transparent member and frame member in the vehicle glass according to the third embodiment. The vehicle glass 1 according to the third embodiment differs from the second embodiment in that the chamfered portion 121 of the transparent member 20 has an R chamfer.

[0081] As shown in Figure 11, in the third embodiment, the chamfered portion 121 is formed by an R chamfer, where the corner is removed in an arc-shaped curved surface. The radius R (radius of curvature) of the chamfered portion 121 is not particularly limited, but it is preferable that the chamfered portion 121 is formed by an R chamfer with a radius of 0.05 mm or more. By having a radius R of 0.05 mm or more, a contact area (overlap) can be secured by the frame member 30 to prevent the transparent member 20 from falling out to the outside of the vehicle. The radius R of the chamfered portion 121 is more preferably 0.1 mm or more, and even more preferably 0.3 mm or more. The larger the radius R of the chamfered portion 121, the larger the contact area between the frame member 30 and the chamfered portion 121 of the transparent member 20 can be, thus improving the effect of preventing the transparent member 20 from falling out. On the other hand, the radius R of the chamfered portion 121 is more preferably 2 mm or less, and more preferably 1 mm or less. By setting the radius R of the chamfered portion 121 within this range, the area of ​​the chamfered portion 121 within the transparent member 20 does not become excessively large, thus ensuring a sufficient area of ​​the far-infrared transmission region B. Furthermore, the radius R of the chamfered portion 121 is preferably 1% to 10% of the maximum dimension DC of the first surface 20A of the transparent member 20, and more preferably 3% to 7%. By setting the radius R of the chamfered portion 121 within this range, an appropriate contact area (overlap) corresponding to the size of the first surface 20A of the transparent member 20 can be ensured. The radius R of the chamfered portion 121 can be calculated, for example, by irradiating the chamfered portion 121 with a laser using a laser displacement meter (Keyence Corporation, in-line profile measuring instrument: LJ-X8200) and obtaining a surface profile.

[0082] The concave portion 131 is recessed radially outward from the inner circumferential surface of the frame member 30. The concave portion 131 is formed in a concave shape corresponding to the cross-sectional shape of the outer circumferential portion of the transparent member 20 on which the chamfered portion 121 is formed. Therefore, the concave portion 131 is formed as a concave curved surface corresponding to the cross-sectional shape of the chamfered portion 121, and the chamfered portion 121 fits into the concave portion 131. The frame member 30 covers the entire chamfered portion 121. As a result, the outer surface 30A of the frame member 30 and the first surface 20A of the transparent member 20 that is radially inward from the chamfered portion 121 are continuously substantially flush. In other words, the step difference D1 between the outer surface 30A of the frame member 30 and the first surface 20A of the transparent member 20 that is radially inward from the chamfered portion 121 is 0.3 mm or less. As a result, wiping by the wiper is not obstructed.

[0083] Thus, in the third embodiment, the overlap portion OL is the portion where the chamfered portion 121 fits into the concave portion 131, and the Z1 direction side of the chamfered portion 121 is covered by a part of the frame member 30. Therefore, the width W of the overlap portion OL is the width from the inner circumferential end (inner circumferential end of the surface 30A) of the portion covering the Z1 direction side of the chamfered portion 121 in a plan view of the first surface 20A of the transparent member 20 along the Z direction, to the bottom of the concave portion 131 (outer circumferential end of the chamfered portion 121). In the example of Figure 11, the overlap portion OL is located radially outward from the inner circumferential end face 34A of the base portion 34. As a result, light LT incident on the transparent member 20 from radially outward from the inner circumferential end face 34A can be incident on the far-infrared camera CA1 without being blocked by the frame member 30. In other words, the field of view of the far-infrared camera CA1 can be widened.

[0084] It is preferable that the overlap portion OL is provided continuously around the entire circumference of the transparent member 20. In this case, the chamfered portion 121 is formed around the entire circumference of the outer periphery of the transparent member 20, and the concave portion 131 is formed around the entire circumference of the inner periphery of the frame member 30. This increases the contact area between the transparent member 20 and the frame member 30 due to the overlap portion OL.

[0085] (Fourth Embodiment) Figure 12 is an enlarged cross-sectional view of the area around the overlap portion of the transparent member and the frame member in the vehicle glass according to the fourth embodiment. The vehicle glass 1 according to the fourth embodiment differs from the first embodiment in that the engagement groove 122 on the outer peripheral end face 21 of the transparent member 20 engages with the engagement projection 132 formed on the inner peripheral surface of the frame member 30.

[0086] As shown in Figure 12, in the fourth embodiment, an engagement groove 122 is formed on the outer peripheral end face 21 of the transparent member 20. The engagement groove 122 does not contact either the first surface 20A or the second surface 20B of the transparent member 20, and is provided within the plane of the outer peripheral end face 21. The engagement groove 122 is recessed radially inward from the outer peripheral end face 21. The cross-sectional shape of the engagement groove 122 is exemplified as a rectangular groove in Figure 12, but it may also be a curved groove such as an arc shape, or a groove with a triangular cross-section, and is not particularly limited.

[0087] The frame member 30 has an engaging projection 132 that fits inside an engaging groove 122 formed on the outer peripheral end face 21 of the transparent member 20. The engaging projection 132 is formed on the inner circumferential surface of the frame member 30, at a position further inward than the outer surface 30A of the frame member 30. The engaging projection 132 protrudes radially inward from the inner circumferential surface of the frame member 30. The engaging projection 132 is formed in a convex shape corresponding to the cross-sectional shape of the engaging groove 122. The engaging projection 132 fits inside the engaging groove 122. As a result, the frame member 30 and the transparent member 20 engage in the Z direction. In the Z direction, the distance from the outer surface 30A of the frame member 30 to the engaging projection 132 is approximately equal to the distance from the first surface 20A of the transparent member 20 to the engaging groove 122. As a result, the outer surface 30A of the frame member 30 and the first surface 20A of the transparent member 20 are continuously substantially flush. In other words, the step difference D1 between the outer surface 30A of the frame member 30 and the first surface 20A of the transparent member 20 is 0.3 mm or less. This prevents interference with wiping by the wiper.

[0088] When the engaging projection 132 reaches the radial bottom of the engaging groove 122, the radial groove depth of the engaging groove 122, the radial projection length of the engaging projection 132, and the width W of the overlapping portion OL coincide. Therefore, the preferred range for the width W of the overlapping portion OL described above also applies to the groove depth of the engaging groove 122 and the projection length of the engaging projection 132.

[0089] It is preferable that the overlap portion OL is provided continuously around the entire circumference of the transparent member 20. In this case, the engagement groove 122 is formed around the entire circumference of the transparent member 20, and the concave portion 131 is formed around the entire circumference of the inner part of the frame member 30. This increases the contact area between the transparent member 20 and the frame member 30 due to the overlap portion OL.

[0090] (Fifth Embodiment) Figure 13 is an enlarged cross-sectional view of the area around the overlapping portion of the transparent member and the frame member in the vehicle glass according to the fifth embodiment. The vehicle glass 1 according to the fifth embodiment differs from the first embodiment in that the uneven portions 140 formed on the outer peripheral end surface 21 of the transparent member 20 and the inner peripheral surface of the frame member 30 overlap each other.

[0091] As shown in Figure 13, in the fifth embodiment, in the overlap portion OL, overlapping recessed and recessed portions 140 are formed on the outer peripheral end surface 21 of the transparent member 20 and on the inner peripheral surface of the frame member 30 that faces the outer peripheral end surface 21 (the inner peripheral surface of the wall portion 31). The overlapping of the recessed and recessed portions 140 prevents the transparent member 20 from falling off the frame member 30. Hereinafter, the recessed and recessed portions 140 of the transparent member 20 will be referred to as recessed and recessed portions 140A, and the recessed and recessed portions 140 of the frame member 30 will be referred to as recessed and recessed portions 140B, and when neither is distinguished, they will simply be referred to as recessed and recessed portions 140. The recessed and recessed portions 140 have a shape in which recesses and protrusions are arranged regularly or irregularly. The uneven surface 140, in which recesses and protrusions are regularly arranged, can take the form of a screw shape in which spiral protrusions and recesses are formed at a constant pitch, a bellows-like shape in which ring-shaped protrusions and ring-shaped recesses are alternately arranged in the Z direction, or a shape in which a certain pattern of unevenness repeats, such as knurling. The number of uneven surfaces in the uneven surface 140 is represented, for example, by the number of vertices of the protruding parts. There can be multiple uneven surfaces. Preferably, there is one or more uneven surfaces, and more preferably three or more. By having three or more uneven surfaces, the contact area of ​​the overlapping parts of the uneven surface 140 can be effectively increased. The number of uneven surfaces is the number of protrusions on the transparent member 20 that are in contact with the frame member 30. In Figure 13, since five protrusions on the transparent member 20 are in contact with the frame member 30, the number of uneven surfaces in the cross-section shown in Figure 13 is five.

[0092] The uneven portion 140A of the transparent member 20 is provided on the outer peripheral end surface 21 of the transparent member 20. The uneven portion 140A of the transparent member 20 is formed on the outer peripheral end surface 21, extending from the end (corner) on the first surface 20A side of the transparent member 20 to the end (corner) on the second surface 20B side. The uneven portion 140B is formed on the inner peripheral surface of the frame member 30 (wall portion 31) in a range corresponding to the formation range of the uneven portion 140A. The uneven portion 140B is formed on the inner peripheral surface of the frame member 30 up to the end (corner) that contacts the outer surface 30A of the frame member 30. When the uneven portion 140A and the uneven portion 140B are interlocked, the outer surface 30A of the frame member 30 and the first surface 20A of the transparent member 20 become continuously substantially flush. In other words, the step difference D1 between the outer surface 30A of the frame member 30 and the first surface 20A of the transparent member 20 is 0.3 mm or less. This prevents interference with wiping by the wiper.

[0093] The height of the uneven portion 140 (height of the unevenness) is not particularly limited, but is preferably 0.1 mm or more. By having a height of 0.1 mm or more of the uneven portion 140, a contact area can be secured by the frame member 30 to prevent the transparent member 20 from falling out to the outside of the vehicle. The height of the uneven portion 140 is more preferably 0.5 mm or more, and even more preferably 1 mm or more. On the other hand, the height of the uneven portion 140 is preferably 2 mm or less. By having a height of 2 mm or less of the uneven portion 140, the processing of the transparent member 20 can be facilitated. In the example of Figure 13, a base portion 34 that supports the second surface 20B of the transparent member 20 is provided on the frame member 30, but the base portion 34 is not required. If the base portion 34 is not provided, the greater the height of the uneven portion 140, the larger the area in which far-infrared rays are blocked by the frame member 30. Therefore, by keeping the height of the uneven portion 140 at 2 mm or less, it is possible to suppress the narrowing of the field of view of the far-infrared camera CA1. Furthermore, the height of the uneven portion 140 is preferably 1% to 75% of the maximum thickness tm of the transparent member 20, more preferably 5% to 50%, and even more preferably 10% to 25%. By keeping the height of the uneven portion 140 within this range, an appropriate contact area corresponding to the thickness of the transparent member 20 can be secured. Furthermore, the height of the uneven portion 140 is preferably 1% to 75% of the maximum dimension DC of the first surface 20A of the transparent member 20, more preferably 10% to 50%. By keeping the height of the uneven portion 140 within this range, an appropriate contact area corresponding to the size of the transparent member 20 can be secured. The height of the uneven surface 140 can be calculated, for example, by irradiating the entire uneven surface 140 with a laser using a laser displacement meter (Keyence Corporation, in-line profile measuring instrument: LJ-X8200) and obtaining a surface profile. Specifically, the height of the uneven surface 140 is defined as the difference between the maximum height of the concave portion (the depth of the shallowest valley) and the minimum height of the convex portion (the height of the lowest peak) in the surface profile of the uneven surface 140.

[0094] Thus, in the fifth embodiment, the overlap portion OL is the portion where the uneven portion 140A of the transparent member 20 and the uneven portion 140B of the frame member 30 overlap (align in the Z direction) in the Z direction. In Figure 13, the width W of the overlap portion OL is equal to the width between the peaks and valleys of the uneven portion 140, that is, the height of the uneven portion 140. It is preferable that the overlap portion OL is provided continuously around the entire circumference of the transparent member 20. In this case, the uneven portion 140A is formed around the entire circumference of the transparent member 20, and the uneven portion 140B is formed around the entire circumference of the inner part of the frame member 30. This increases the contact area between the transparent member 20 and the frame member 30 due to the overlap portion OL.

[0095] (Sixth Embodiment) Figure 14 is an enlarged cross-sectional view of the area around the overlapping portion of the transparent member and the frame member in the vehicle glass according to the sixth embodiment. The vehicle glass 1 according to the sixth embodiment differs from the first embodiment in that the frame member 30 is not provided with a structure (base portion 34) that supports the second surface 20B of the transparent member 20.

[0096] As shown in Figure 14, in the sixth embodiment, the structure of the transparent member 20 (stepped portion 22) and the structure of the frame member 30 (holding portion 33) constituting the overlap portion OL are the same as in the first embodiment. The width W of the overlap portion OL is the same as in the first embodiment as the width of the portion in which the holding portion 33, which is arranged in the stepped portion 22, overlaps with the transparent member 20 in the Z direction (aligned in the Z direction), and is the width between the inner circumferential end of the holding portion 33 and the outer circumferential end (outer circumferential end face 21) of the transparent member 20 in a plan view of the first surface 20A of the transparent member 20 along the Z direction.

[0097] In the sixth embodiment, the frame member 30 is not provided with a structure to support the second surface 20B of the transparent member 20. In other words, the frame member 30 does not have a portion that faces the vehicle side toward the second surface 20B of the transparent member 20. On the other hand, in the overlap portion OL, the frame member 30 faces the third surface 22A, which is the vehicle side surface of the stepped portion 22, in the Z direction. Therefore, in the sixth embodiment, the frame member 30 prevents the transparent member 20 from falling out to the vehicle side by the overlap portion OL, but does not have a structure to prevent the transparent member 20 from falling out to the vehicle side.

[0098] Thus, the transparent member 20 and the frame member 30 only need to have an overlap portion OL on the vehicle side of the second surface 20B to prevent the transparent member 20 from falling outwards on the vehicle side (Z1 direction), and do not need to have a structure to prevent the transparent member 20 from falling inwards on the vehicle side. As shown in Figure 5, a space for arranging the far-infrared camera CA1 is provided on the vehicle side of the transparent member 20. Therefore, a separate member can be provided in this space to prevent the transparent member 20 from falling inwards on the vehicle side (Z2 direction).

[0099] For example, in Figure 14, a support member 150 that supports the second surface 20B of the transparent member 20 is provided in the space for positioning the far-infrared camera CA1. The support member 150 supports the outer periphery of the second surface 20B of the transparent member 20 from the inside of the vehicle. The support member 150 prevents the transparent member 20 from falling into the inside of the vehicle. The support member 150 supports the outer periphery of the second surface 20B of the transparent member 20 at one or more locations. The support member 150 may be cylindrical, for example, and support the outer periphery of the second surface 20B of the transparent member 20 around its entire circumference. Preferably, the support positions by the support member 150 overlap with the formation range of the overlap portion OL in the radial direction. This prevents the support member 150 from restricting the field of view of the far-infrared camera CA1.

[0100] (Example of configuration in which adhesive is provided at the boundary between the transparent member and the frame member) Next, an example of configuration in which adhesive is provided at the boundary between the transparent member 20 and the frame member 30 will be described. Figure 15 is an enlarged cross-sectional view of the area around the overlap portion showing the first configuration example in which an adhesive layer is formed on the transparent member and the frame member. Figure 16 is an enlarged cross-sectional view of the area around the overlap portion showing the second configuration example in which an adhesive layer is formed on the transparent member and the frame member. Figure 17 is an enlarged cross-sectional view of the area around the overlap portion showing the third configuration example in which an adhesive layer is formed on the transparent member and the frame member. Each configuration example shown in Figures 15 to 17 shows, as an example, a configuration in which adhesive is provided at the boundary between the frame member 30 and the transparent member 20 of the structure shown in the first embodiment (see Figure 8), but it may also be applied to each of the structures shown in the second to sixth embodiments.

[0101] As shown in Figure 15, in the first configuration example, an adhesive layer 70 is provided in the overlap portion OL to bond the outer periphery of the transparent member 20 and the inner periphery of the frame member 30. The adhesive layer 70 is a layer made of adhesive that bonds the transparent member 20 and the frame member 30. The adhesive layer 70 is provided at the boundary between the transparent member 20 and the frame member 30. The adhesive layer 70 is in contact with the surface of the outer periphery of the transparent member 20. The adhesive layer 70 is in contact with the surface of the inner periphery of the frame member 30. The adhesive layer 70 bonds the opposing surfaces of the outer periphery of the transparent member 20 and the inner periphery of the frame member 30.

[0102] The thickness of the adhesive layer 70 is not particularly limited. For example, the thickness of the adhesive layer 70 is 100 μm or less. The thickness of the adhesive layer 70 is the distance between the contact surface of the adhesive layer 70 with the transparent member 20 and the contact surface of the adhesive layer 70 with the frame member 30. The adhesive layer 70 can be formed by applying the adhesive that will become the adhesive layer 70 as a primer to the bonding area when integrally molding (insert molding) the transparent member 20 and the frame member 30. By integrally molding the far-infrared transmitting unit U, the adhesive layer 70 is sufficiently adhered to both the transparent member 20 and the frame member 30, improving the watertightness of the boundary between the two members. The thickness of the adhesive layer 70 is more preferably 50 μm or less. The thickness of the adhesive layer 70 is even more preferably 30 μm or less, and particularly preferably 10 μm or less. This reduces the gap at the boundary where the adhesive layer 70 is formed, improves watertightness, and suppresses exposure of the adhesive layer 70 to water and sunlight. Furthermore, the thickness of the adhesive layer 70 is preferably 0.1 μm or more, more preferably 0.5 μm or more, and even more preferably 1 μm or more. This allows for the formation of an adhesive layer 70 with sufficient thickness to ensure adhesive strength and watertightness, thereby improving adhesive reliability. The thickness of the adhesive layer 70 is a representative value calculated from the overall thickness profile of the adhesive layer 70, and specifically, it is the average value of the thickness of the adhesive layer 70.

[0103] The constituent material of the adhesive layer 70 is not particularly limited as long as it is an adhesive that can be applied as a primer when integrally molding (insert molding) the permeable member 20 and the frame member 30. Preferably, the adhesive layer 70 contains 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. This allows for strong adhesion between inorganic and organic materials, which are generally difficult to bond, by silane coupling bonds, when the surface of the permeable member 20 is made of an inorganic material and the surface of the frame member 30 is made of an organic material. The silane coupling agent used in the adhesive layer 70 is not particularly limited, but for example, 3-glycidoxypropyltrimethoxysilane can be used.

[0104] The adhesive layer 70 may be formed on any surface included in the overlap portion OL. In the first configuration example shown in Figure 15, the adhesive layer 70 is formed on the third surface 22A and the outer peripheral end surface 21 of the surface of the permeable member 20, which are included in the overlap portion OL. In the first configuration example, the adhesive layer 70 is not formed on the fourth surface 22B and the outer peripheral portion of the second surface 20B. The adhesive layer 70 may also be provided on these surfaces. The adhesive layer 70 may be provided on only a single surface, such as the third surface 22A, or it may be provided on multiple surfaces as shown in Figure 15. By providing the adhesive layer 70 on multiple surfaces, a larger bonding area can be secured, improving the reliability of adhesion and watertightness. In the first configuration example, the adhesive layer 70 is formed on the entire third surface 22A. The adhesive layer 70 is formed on the entire outer peripheral end surface 21. The adhesive layer 70 may be formed on only a part of a particular surface, rather than the entire surface. When the adhesive layer 70 is formed over the entire surface, the bonding area can be increased and the positional variation of the formation area (the area where the adhesive is applied) can be reduced, compared to when it is applied to only a part of the surface.

[0105] It is preferable that the adhesive layer 70 is provided so as not to be exposed on the outer surface (Z1 direction side) of the far-infrared transmission unit U. That is, as in the first configuration example in Figure 15, it is preferable that the Z1 direction end 70A of the adhesive layer 70 is positioned Z2 direction side of the Z1 direction end of the boundary between the transmission member 20 and the frame member 30. In other words, the adhesive layer 70 does not reach the position of the first surface 20A of the transmission member 20 or the outer surface 30A of the frame member 30, but is positioned Z2 direction side of these surfaces. Furthermore, it is preferable that the Z1 direction end 70A of the adhesive layer 70 is covered from the outside by at least one of the transmission member 20 and the frame member 30. In the first configuration example in Figure 15, the Z1 direction end 70A of the adhesive layer 70 is the inner circumference end of the portion formed on the third surface 22A. The Z1-direction end 70A of the adhesive layer 70 is covered from the Z1-direction side by the holding portion 33 of the frame member 30 because the adhesive layer 70 is not formed on the fourth surface 22B. The fourth surface 22B of the transparent member 20 and the inner circumferential surface of the holding portion 33 of the frame member 30 are in close contact without any gaps. Therefore, the Z1-direction end 70A of the adhesive layer 70 is not exposed in the Z1 direction from the boundary between the transparent member 20 and the frame member 30. The adhesive layer 70 is not visible from the outside of the vehicle (Z1 direction side) of the far-infrared transmission unit U. Because the adhesive layer 70 is not exposed in the Z1 direction from the boundary between the transparent member 20 and the frame member 30, it is possible to suppress the end 70A of the adhesive layer 70 from being directly subjected to water pressure from the outside of the vehicle. Because the end 70A of the adhesive layer 70 is less susceptible to water pressure, it is possible to suppress the occurrence of peeling or cracking at the end 70A of the adhesive layer 70. As a result, the deterioration of the adhesive layer 70 over time can be suppressed, and the long-term reliability of the water-stopping function of the adhesive layer 70 can be improved. Apart from the example in Figure 15, the end portion 70A may be covered from the Z1 direction side by a part of the permeable member 20. The end portion 70A may be covered from the Z1 direction side by both a part of the permeable member 20 and a part of the frame member 30.

[0106] In a configuration where the frame member 30 has a base portion 34 facing the second surface 20B of the transparent member 20 in the overlap portion OL, it is preferable that the adhesive layer 70 is provided between the second surface 20B and the base portion 34 and reaches the inner circumference end 34E of the base portion 34, as shown in Figure 16.

[0107] In the second configuration example shown in Figure 16, the adhesive layer 70 is formed on the outer periphery of the second surface 20B, which is included in the overlap portion OL of the surface of the transparent member 20. The second configuration example also shows an example in which the adhesive layer 70 is formed on the third surface 22A and the outer periphery end face 21, as in Figure 15. The adhesive layer 70 may also be formed only on the outer periphery of the second surface 20B.

[0108] In the second configuration example, the adhesive layer 70 contacts the second surface 20B of the transparent member 20 and also contacts the surface of the base portion 34 on the Z1 direction side. The adhesive layer 70 adheres the second surface 20B of the transparent member 20 and the surface of the base portion 34 on the Z1 direction side. The adhesive layer 70 reaches the inner circumferential end 34E of the base portion 34. The inner circumferential end 34E of the base portion 34 refers to the inner circumferential end of the surface that contacts the adhesive layer 70 (the surface of the base portion 34 on the Z1 direction side). In Figure 16, in the radial direction, the Z2 direction side (inside the vehicle) end 70B of the adhesive layer 70 is positioned at the inner circumferential end 34E of the base portion 34. In other words, the Z2 direction side (inside the vehicle) end 70B of the adhesive layer 70 and the inner circumferential end 34E of the base portion 34 are flush. Furthermore, the adhesive layer 70 extends to the outer peripheral edge of the surface of the base portion 34 on the Z1 direction side. The adhesive layer 70 is in contact with the entire surface of the base portion 34 on the Z1 direction side. Because the adhesive layer 70 reaches the inner peripheral edge 34E of the base portion 34, the maximum bonding area between the permeable member 20 (second surface 20B) and the base portion 34 can be secured. As a result, the reliability of the adhesion between the permeable member 20 and the frame member 30 is improved. And the watertightness of the boundary between the permeable member 20 and the frame member 30 is improved.

[0109] Furthermore, as shown in Figure 17, it is preferable that the adhesive layer 70 extends from the boundary between the second surface 20B and the base portion 34 along the second surface 20B and is formed to a position radially inward from the inner circumference end portion 34E of the base portion 34.

[0110] In the third configuration example shown in Figure 17, the adhesive layer 70 extends from the outer periphery of the second surface 20B included in the overlap portion OL to a position radially inward of the overlap portion OL. The adhesive layer 70 is formed from a position radially outside the inner end 34E of the base portion 34, beyond the position of the end 34E, and to a position radially inward of the end 34E. The end 70B of the adhesive layer 70 is located radially inward of the end 34E. By forming the adhesive layer 70 to a position radially inward of the inner end 34E of the base portion 34, the bonding area between the permeable member 20 (second surface 20B) and the base portion 34 can be reliably maximized without being affected by dimensional variations or material shrinkage during molding. As a result, the reliability of the adhesion between the permeable member 20 and the frame member 30 is improved. Furthermore, the watertightness of the boundary portion between the permeable member 20 and the frame member 30 is improved. Furthermore, since the interior side (Z2 direction side) of the transparent member 20 is not visible from the exterior side, even if the adhesive layer 70 protrudes, it does not affect the aesthetic appearance. Even if the adhesive layer 70 is exposed on the interior side (Z2 direction side) of the transparent member 20, it is covered by the far-infrared camera CA1 and bracket 40 as shown in Figure 5, so it does not affect the aesthetic appearance on the interior side.

[0111] In the third configuration example, the amount of overhang (radial length) of the adhesive layer 70 from the end 34E is not particularly limited, but it is preferable to minimize it while ensuring that it overhangs from the end 34E. This makes it difficult for the adhesive layer 70 to enter the field of view of the far-infrared camera CA1 in the far-infrared transmission region B. The amount of radial overhang of the adhesive layer 70 from the end 34E is, for example, 3 mm or less. The amount of radial overhang of the adhesive layer 70 from the end 34E is preferably 2 mm or less, and more preferably 1 mm or less. The amount of radial overhang of the adhesive layer 70 from the end 34E is, for example, 0.1 mm or more. The amount of radial overhang of the adhesive layer 70 from the end 34E is preferably 0.3 mm or more, and more preferably 0.5 mm or more.

[0112] (Modifications) The vehicle glass according to the embodiment is not limited to the embodiment described above. Other modifications are described below.

[0113] Figure 18 is a schematic diagram showing a first modified example of the planar shape of the frame member and the transparent member. Figure 19 is a schematic diagram showing a second modified example of the planar shape of the frame member and the transparent member.

[0114] In the above embodiment, an example was shown in which the opening 19, frame member 30, and transparent member 20 are circular in plan view, but the planar shape of the opening 19, frame member 30, and transparent member 20 is not particularly limited. The opening 19, frame member 30, and transparent member 20 may be rectangular in plan view, as shown in Figure 18. In Figure 18, the frame member 30 and transparent member 20 are rectangular, but they may also be square, trapezoidal, rhombus, etc. Although not shown, the planar shape of the opening 19, frame member 30, and transparent member 20 may be a polygon other than a quadrilateral, such as a triangle, pentagon, or hexagon, or it may be a star shape or a gear shape.

[0115] The opening 19, frame member 30, and transparent member 20 may be elliptical in plan view, as shown in Figure 19. The circular shape shown in the above embodiment can also be considered an example of an ellipse where the length of the major axis and the length of the minor axis are equal. In addition, the opening 19, frame member 30, and transparent member 20 may be a so-called oval shape (rounded rectangle), etc.

[0116] Thus, the planar shapes of the opening 19, the frame member 30, and the transparent member 20 are arbitrary. In other words, the planar shape of the far-infrared transmission region B of the vehicle glass 1 is arbitrary. Similarly, the planar shape of the visible light transmission region C of the vehicle glass 1 is arbitrary. In the example shown in Figure 18, the planar shapes of the frame member 30 and the transparent member 20 are polygonal, and the width W of the overlap portion OL may differ at the corners and edges. The width W of the overlap portion OL is the width of the overlap portion OL in the direction along the first surface 20A of the transparent member 20 (i.e., the radial direction) when viewed in plan from the thickness direction of the transparent member 20. The width W of the overlap portion OL may differ in the circumferential direction of the transparent member 20. The width W of the overlap portion OL should be within the range of 0.1% to 50% of the maximum dimension DC of the first surface 20A at each position in the circumferential direction.

[0117] (effect) As described above, the vehicle glass according to the first aspect of this disclosure comprises a glass member 10 having an opening 19 that penetrates from the surface on the Z1 direction side to the surface on the Z2 direction side opposite to the Z1 direction, a far-infrared emitting member 20 disposed inside the opening 19, and a frame member 30 that holds the outer periphery of the emitting member 20 and is attached to the opening 19, wherein in the thickness direction (Z direction) of the emitting member 20, the step D1 between the first surface 20A on the Z1 direction side of the emitting member 20 and the surface on the Z1 direction side of the frame member 30 is 0.3 mm or less, and an overlap portion OL is provided on the Z1 direction side of the second surface 20B on the Z2 direction side of the emitting member 20, where the outer periphery of the emitting member 20 and the inner periphery of the frame member 30 overlap in a plan view from the thickness direction, and the width W of the overlap portion OL in the direction along the first surface 20A of the emitting member 20 is 0.1% or more and 50% or less of the maximum dimension DC of the first surface 20A of the emitting member 20. According to this disclosure, the step D1 between the transparent member 20 and the frame member 30 is 0.3 mm or less, so that wiping by the wiper is not hindered. Since an overlapping portion OL is provided on the Z1 side of the second surface 20B on the Z2 side of the transparent member 20, the movement of the transparent member 20 on the Z1 side is prevented by the frame member 30 in the overlapping portion OL. Since the width W of this overlapping portion OL is 0.1% to 50% of the maximum dimension DC of the first surface 20A of the transparent member 20, the frame member 30 and the transparent member 20 can be sufficiently engaged in the overlapping portion OL while ensuring a wide area of ​​far-infrared transmission, thereby effectively preventing the transparent member 20 from falling off. As a result, according to the vehicle glass of the first embodiment of this disclosure, the falling off of the far-infrared transparent member can be prevented without hindering wiping by the wiper.

[0118] A vehicle glass according to a second aspect of this disclosure is a vehicle glass according to the first aspect, wherein the transparent member 20 has a chamfered portion 121 on the outer periphery of the first surface 20A, and the frame member 30 has a recessed portion 131 in the overlap portion OL into which the chamfered portion 121 fits. This makes it possible to use the chamfered portion 121 on the outer periphery of the transparent member 20 as a locking portion and to fit the chamfered portion 121 into the frame member 30, thereby realizing a structure that prevents the transparent member 20 from falling out without forming a step D1 on the Z1 side.

[0119] The vehicle glass according to the third aspect of this disclosure is the vehicle glass according to the second aspect, wherein the chamfered portion 121 is formed with a C chamfer with a chamfer width Wc of 0.05 mm or more. This ensures a contact area for preventing the transparent member 20 from falling off by the frame member 30.

[0120] The vehicle glass according to the fourth aspect of this disclosure is the vehicle glass according to the second or third aspect, wherein the chamfered portion 121 is formed with a C chamfer with a chamfer angle θ of 0.1 degrees or more and less than 90 degrees. This effectively prevents the transparent member 20 from falling off with the frame member 30.

[0121] The vehicle glass according to the fifth aspect of this disclosure is the vehicle glass according to the second aspect, wherein the chamfered portion 121 is formed with a radius R chamfer of 0.05 mm or more. As a result, the detachment of the transparent member 20 can be effectively prevented by fitting the arc-shaped chamfered portion 121 into the frame member 30.

[0122] The vehicle glass according to the sixth aspect of this disclosure is a vehicle glass according to any of the first to fifth aspects, wherein in the overlap portion OL, overlapping recesses 140 are formed on the outer peripheral end surface 21 of the transparent member 20 and on the inner peripheral surface of the frame member 30 that faces the outer peripheral end surface 21. This effectively prevents the transparent member 20 from falling off due to the interlocking of the outer peripheral end surface 21 of the transparent member 20 and the inner peripheral surface of the frame member 30.

[0123] The vehicle glass according to the seventh aspect of this disclosure is the vehicle glass according to the sixth aspect, wherein the height of the uneven portion 140 is 0.1 mm or more. This ensures a contact area for preventing the transparent member 20 from falling off with the frame member 30.

[0124] The eighth aspect of the present disclosure is a vehicle glass according to any of the first to seventh aspects, wherein the opposing surface of the transparent member 20 that faces the frame member 30 in the overlap portion OL has an arithmetic mean roughness Ra value of 0.1 μm or more. This increases the frictional resistance at the contact point between the transparent member 20 and the frame member 30 in the overlap portion OL, effectively preventing the transparent member 20 from falling off.

[0125] The vehicle glass according to the ninth aspect of this disclosure is a vehicle glass according to any of the first to eighth aspects, wherein the overlap portion OL is provided around the entire circumference of the transparent member 20. This increases the contact area between the transparent member 20 and the frame member 30 due to the overlap portion OL, thereby more effectively preventing the transparent member 20 from falling off.

[0126] The vehicle glass according to the tenth aspect of this disclosure is a vehicle glass according to any of the first to ninth aspects, wherein the frame member 30 has a clamping structure SW that clamps the outer periphery of the transparent member 20 from both the Z1 direction side and the Z2 direction side. This prevents both the transparent member 20 from falling out in the Z1 direction and the transparent member 20 from falling out in the Z2 direction.

[0127] The vehicle glass according to the eleventh aspect of this disclosure is a vehicle glass according to any of the first to tenth aspects, wherein the frame member 30 has an engaging projection 132 that fits inside an engaging groove 122 formed on the outer peripheral end face 21 of the transparent member 20. This prevents both the transparent member 20 from falling out in the Z1 direction and the transparent member 20 from falling out in the Z2 direction.

[0128] The vehicle glass according to the twelfth aspect of this disclosure is a vehicle glass according to any of the first to eleventh aspects, wherein the step D2 between the surface 12A on the Z1 direction side of the glass member 10 and the surface 30A on the Z1 direction side of the frame member 30 in the thickness direction of the transparent member 20 is 1.0 mm or less. By making the step D2 between the glass member 10 and the frame member 30 1.0 mm or less, wiping by the wiper is not hindered.

[0129] The vehicle glass according to the 13th aspect of this disclosure is a vehicle glass according to any of the 1st to 12th aspects, wherein an adhesive layer 70 is provided in the overlap portion OL to bond the outer periphery of the transparent member 20 and the inner periphery of the frame member 30, and the Z1-direction end 70A of the adhesive layer 70 is positioned Z2-direction side than the Z1-direction end of the boundary between the transparent member 20 and the frame member 30. By positioning the adhesive layer 70 Z2-direction side than the Z1-direction end of the boundary between the transparent member 20 and the frame member 30, peeling and cracking of the end 70A of the adhesive layer 70 can be suppressed. As a result, deterioration of the adhesive layer 70 over time can be suppressed and the long-term reliability of the water-stopping function of the adhesive layer 70 can be improved.

[0130] A vehicle glass according to a fourteenth aspect of this disclosure is a vehicle glass according to a thirteenth aspect, wherein the Z1-direction end 70A of the adhesive layer 70 is covered by at least one of the transparent member 20 and the frame member 30. This prevents the end 70A of the adhesive layer 70 from being directly subjected to water pressure from the outside of the vehicle. Since the end 70A of the adhesive layer 70 is not directly subjected to water pressure, deterioration of the adhesive layer 70 over time is suppressed, and the long-term reliability of the water-stopping function of the adhesive layer 70 can be effectively improved.

[0131] The vehicle glass according to the 15th aspect of this disclosure is the vehicle glass according to the 13th or 14th aspect, wherein the frame member 30 has a base portion 34 facing the second surface 20B of the transparent member 20 in the overlap portion OL, and the adhesive layer 70 is provided between the second surface 20B and the base portion 34 and reaches the inner circumferential end 34E of the base portion 34. By the adhesive layer 70 reaching the inner circumferential end 34E of the base portion 34, the adhesive area between the transparent member 20 (second surface 20B) and the base portion 34 can be maximized. As a result, the reliability of adhesion between the transparent member 20 and the frame member 30 is improved. Furthermore, the watertightness of the boundary portion between the transparent member 20 and the frame member 30 is improved.

[0132] The vehicle glass according to the sixteenth aspect of this disclosure is the vehicle glass according to the fifteenth aspect, wherein the adhesive layer 70 extends from the boundary between the second surface 20B and the base portion 34 along the second surface 20B and is formed to a position radially inward from the inner circumferential end 34E of the base portion 34. By forming the adhesive layer 70 to a position radially inward from the inner circumferential end 34E of the base portion 34, the bonding area between the transparent member 20 (second surface 20B) and the base portion 34 can be reliably maximized without being affected by dimensional variations or material shrinkage during molding.

[0133] 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.

[0134] 1 Vehicle glass 10 Glass members 12, 14 Glass substrates 12a, 14a, 19 Opening 20 Transmitting member 20A First surface 20B Second surface 21 Outer peripheral end face 22 Stepped portion 22A Third surface 30 Frame member 30B, 131A Opposing surface 31 Wall portion 32 Flange portion 33 Holding portion 34 Base portion 34E End portion 50 Adhesive 70 Adhesive layer 100 Camera unit 121 Chamfered portion 122 Engagement groove 131 Concave portion 132 Engagement protrusion 140, 140A, 140B Uneven portion 150 Support member A1 Light-transmitting region A2, A2a Light-shielding region B Far-infrared transmitting region C Visible light transmitting region CA1 Far-infrared camera CA2 Visible light camera D1, D2 Step SW Clamping structure U Far infrared transmission unit V Vehicle W Width (width of overlapping portion) Wc Chamfer width θ Chamfer angle R Radius (radius of chamfered portion)

Claims

1. A glass member having an opening formed therein that penetrates from the surface on the first direction side to the surface on the second direction side opposite to the first direction; a far-infrared emitting member disposed inside the opening; and a frame member that holds the outer periphery of the emitting member and is attached to the opening, wherein in the thickness direction of the emitting member, the step difference between the first surface on the first direction side of the emitting member and the first direction side of the frame member is 0.3 mm or less; an overlap portion is provided on the first direction side of the second surface on the second direction side of the emitting member, such that in a plan view from the thickness direction, the outer periphery of the emitting member and the inner periphery of the frame member overlap; and the width of the overlap portion in the direction along the first surface of the emitting member is 0.1% or more and 50% or less of the maximum dimension of the first surface of the emitting member.

2. The vehicle glass according to claim 1, wherein the transparent member has a chamfered portion on the outer periphery of the first surface, and the frame member has a recessed portion in the overlap portion into which the chamfered portion fits.

3. The chamfered portion is formed with a C-chamfer having a chamfer width of 0.05 mm or more, as described in claim 2.

4. The vehicle glass according to claim 2, wherein the chamfered portion is formed with a C-chamfer having a chamfer angle of 0.1 degrees or more and less than 90 degrees.

5. The chamfered portion is formed with a radius of 0.05 mm or more, the vehicle glass according to claim 2.

6. In the overlapping portion, overlapping recesses are formed on the outer peripheral end surface of the transparent member and on the inner peripheral surface of the frame member that faces the outer peripheral end surface. The vehicle glass according to claim 1.

7. The vehicle glass according to claim 6, wherein the height of the uneven portion is 0.1 mm or more.

8. The vehicle glass according to claim 1, wherein the opposing surface of the transparent member that faces the frame member in the overlap portion has an arithmetic mean roughness Ra value of 0.1 μm or more.

9. The overlap portion is provided around the entire circumference of the transparent member, as described in claim 1.

10. The vehicle glass according to claim 1, wherein the frame member has a clamping structure that clamps the outer periphery of the transparent member from both the first direction side and the second direction side.

11. The vehicle glass according to claim 1, wherein the frame member has an engaging projection that fits into an engaging groove formed on the outer peripheral end face of the transparent member.

12. The vehicle glass according to claim 1, wherein, in the thickness direction of the transparent member, the difference in height between the surface of the glass member on the first direction side and the surface of the frame member on the first direction side is 1.0 mm or less.

13. The overlapping portion is provided with an adhesive layer for bonding the outer periphery of the transparent member and the inner periphery of the frame member, wherein the end of the adhesive layer on the first direction side is located on the second direction side of the boundary between the transparent member and the frame member on the first direction side.

14. The end of the adhesive layer on the first direction side is covered in the thickness direction of the transparent member by at least one of the frame member and the transparent member, as described in claim 13.

15. The vehicle glass according to claim 13, wherein the frame member has a base portion facing the second surface of the transparent member in the overlap portion, and the adhesive layer is provided between the second surface and the base portion and reaches the inner circumference end of the base portion.

16. The vehicle glass according to claim 15, wherein the adhesive layer extends from the boundary between the second surface and the base portion along the second surface and is formed to a position radially inward from the inner circumferential end of the base portion.

Images