Vehicle window structure

Abstract

Provided is a vehicle window structure that allows a light-emitting device to be disposed on the outside of a laminated glass.　This vehicle window structure is configured to be installed in an opening of a vehicle. The vehicle window structure has a first glass plate and a light-emitting device. At least a part of the light-emitting device is disposed in a space formed among: the first glass plate; an adhesive that bonds the first glass plate to a body flange of the vehicle; and an interior member of the vehicle.

Description

[Technical field]

[0001] The present invention relates to a window structure for a vehicle. [Background technology]

[0002] There is a known technology for encapsulating a structure such as a light-emitting device in laminated glass. For example, there is a technology for encapsulating a light-emitting diode mounted on a printed circuit board in the peripheral region of laminated glass used as a windshield. The light-emitting diode is encapsulated, for example, in the intermediate film of the laminated glass, and displays warning information (collision prevention) to the driver (for example, see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 2019-522613 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the case where a light-emitting device including a light-emitting diode or the like is encapsulated in an interlayer of a laminated glass, for example, if a crack occurs in a glass plate during the manufacturing process of the laminated glass or if the light-emitting device malfunctions, the entire laminated glass becomes unusable. As a result, production efficiency decreases, which causes an increase in production costs. In addition, the maintainability of the laminated glass encapsulating the light-emitting device after it is released to the market also decreases.

[0005] The present invention has been made in consideration of the above-mentioned points, and has an object to provide a vehicle window structure in which a light-emitting device can be arranged on the outer side of a laminated glass or the outer side of a single glass pane. [Means for solving the problem]

[0006] A vehicle window structure according to one embodiment of the present invention is a vehicle window structure to be installed in an opening of a vehicle, the vehicle window structure having a first glass plate and a light emitting device, at least a part of the light emitting device being disposed in a space formed between the first glass plate, an adhesive that bonds the first glass plate to a body flange of the vehicle, and an interior material of the vehicle. the body flange has an area extending in a direction opposite to an end of the first glass plate relative to a position in contact with the adhesive and facing the first glass plate, and the interior material has an area facing the first glass plate across the body flange. . Effect of the Invention

[0007] According to one embodiment of the disclosure, since a light emitting device can be arranged on the outside of a laminated glass or a single sheet of glass, even if a crack occurs in a glass plate during the manufacturing process of the laminated glass or single sheet of glass or if the light emitting device malfunctions, a decrease in production efficiency and an increase in production costs can be suppressed, and at the same time, a vehicle window structure can be provided that improves maintainability after a laminated glass or single sheet of glass containing at least a part of a light emitting device is released to the market. [Brief description of the drawings]

[0008] [Figure 1] 1(a) and (b) are diagrams illustrating a vehicle window structure according to a first embodiment of the present invention. [Diagram 2] 2(a) to 2(c) are diagrams illustrating a vehicle window structure according to a first modified example of the first embodiment. [Diagram 3] 3(a) to 3(c) are diagrams illustrating vehicle window structures according to second and third modified examples of the first embodiment. [Figure 4] 4(a) and (b) are cross-sectional views illustrating vehicle window structures according to fourth and fifth modified examples of the first embodiment. [Diagram 5] 5(a) and (b) are cross-sectional views illustrating vehicle window structures according to sixth and seventh modified examples of the first embodiment. [Figure 6] 6(a) and (b) are cross-sectional views illustrating vehicle window structures according to eighth and ninth modified examples of the first embodiment. [Figure 7] 7(a) and (b) are diagrams illustrating a vehicle window structure according to a second embodiment of the present invention. [Figure 8] 8(a) and (b) are cross-sectional views illustrating vehicle window structures according to first and second modified examples of the second embodiment. [Figure 9] 9(a) and (b) are cross-sectional views illustrating vehicle window structures according to third and fourth modified examples of the second embodiment. [Figure 10] 10(a) and (b) are cross-sectional views illustrating vehicle window structures according to fifth and sixth modified examples of the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. In each drawing, the same components are given the same reference numerals, and duplicated explanations may be omitted. In each drawing, the size and shape may be partially exaggerated to make the contents of the embodiment of the present invention easier to understand.

[0010] The vehicle is typically an automobile, but refers to a moving body having laminated glass or single glass, including trains, ships, aircraft, etc. Hereinafter, a vehicle window structure having laminated glass will be described as an example, but the vehicle window structure may have a single glass sheet.

[0011] The plan view refers to a predetermined area of ​​the laminated glass viewed from the normal direction of the surface of the laminated glass facing the vehicle interior, and the planar shape refers to a shape of a predetermined area of ​​the laminated glass viewed from the normal direction of the surface of the laminated glass facing the vehicle interior.

[0012] 1(a) and 1(b) are diagrams illustrating a vehicle window structure according to a first embodiment of the present invention. FIG. 1(a) is a schematic diagram showing a state in which the vehicle window structure is attached to a vehicle and viewed from inside the vehicle to the outside of the vehicle. FIG. 1(b) is a partially enlarged cross-sectional view taken along line AA in FIG. 1(a). Note that FIG. 1(a) omits the illustration of dam rubber 31, urethane adhesive 32, and the like shown in FIG. 1(b).

[0013] 1(a) and 1(b), a vehicle window structure 1 according to the first embodiment has a laminated glass 10 and a light emitting device 20. The laminated glass 10 is fixed to a body flange 33 that protrudes inward from the outer periphery of a substantially rectangular opening in the body of the vehicle via a dam rubber 31 and a urethane adhesive 32 provided on the peripheral edge of the surface of the laminated glass 10 facing the vehicle interior. Reference numeral 34 denotes an interior material of the vehicle.

[0014] In the following description, reference numeral 101 is referred to as the upper edge of the laminated glass 10, reference numeral 102 is referred to as the lower edge, reference numeral 103 is referred to as the left edge, and reference numeral 104 is referred to as the right edge. When the laminated glass 10 is attached to a right-hand drive vehicle and viewed from inside the vehicle, the upper edge refers to the edge on the roof side of the vehicle, the lower edge refers to the edge on the engine compartment side, the left edge refers to the edge on the passenger seat side, and the right edge refers to the edge on the driver's seat side.

[0015] The laminated glass 10 according to the first embodiment is a laminated glass for a vehicle, which has a glass plate 11, a glass plate 12, an interlayer film 13, and a shielding layer 14. The laminated glass 10 according to the first embodiment can be applied to fixed windows such as a front window, a rear window, a rear quarter window, a roof, and an extra window for a vehicle. The laminated glass 10 according to the first embodiment can also be applied to a side window as long as the window is a fixed window that does not slide up and down.

[0016] The laminated glass 10 may be flat or may be curved in both the longitudinal and lateral directions. Alternatively, the laminated glass 10 may be curved only in the longitudinal direction or curved only in the lateral direction. When the laminated glass 10 is curved, it is preferable that the laminated glass 10 be curved so as to be convex toward the outside of the vehicle.

[0017] The glass sheet 11 is an interior glass sheet that faces the interior side of the vehicle when the laminated glass 10 is installed in the vehicle. The glass sheet 12 is an exterior glass sheet that faces the exterior side of the vehicle when the laminated glass 10 is installed in the vehicle.

[0018] When the laminated glass 10 is curved, the radius of curvature of the laminated glass 10 is preferably 1,000 mm or more and 100,000 mm or less. The radii of curvature of the glass plates 11 and 12 may be the same or different. When the radii of curvature of the glass plates 11 and 12 are different, the radius of curvature of the glass plate 11 is larger than the radius of curvature of the glass plate 12.

[0019] The glass plate 11 and the glass plate 12 are a pair of glass plates facing each other. The interlayer film 13 is located between the pair of glass plates. The glass plate 11 and the glass plate 12 are fixed together with the interlayer film 13 sandwiched between them. When the vehicle window structure has a single pane glass, the single pane glass may be either the glass plate 11 or the glass plate 12, and the interlayer film 13 does not need to be disposed.

[0020] The interlayer film 13 is a film that bonds the glass plate 11 and the glass plate 12. The outer periphery of the interlayer film 13 is preferably edge-treated. That is, the ends (edges) of the interlayer film 13 are preferably treated so as not to protrude significantly from the ends (edges) of the glass plates 11 and 12. It is preferable that the amount by which the ends of the interlayer film 13 protrude from the ends of the glass plates 11 and 12 is 150 μm or less in terms of not impairing the appearance. Details of the glass plate 11, the glass plate 12, and the interlayer film 13 will be described later.

[0021] The shielding layer 14 is an opaque layer, and can be provided, for example, in a strip shape along the peripheral portion (upper edge portion 101, lower edge portion 102, left edge portion 103, and right edge portion 104) of the vehicle interior surface of the laminated glass 10. The shielding layer 14 is, for example, an opaque (e.g., black) colored ceramic layer. The shielding layer 14 may be a colored intermediate film or colored film having light-shielding properties, or a combination of a colored intermediate film and a colored ceramic layer. The colored film may be integrated with an infrared reflective film, etc.

[0022] The laminated glass 10 has an opaque shielding layer 14, which can prevent ultraviolet light from deteriorating the urethane adhesive 32 and the like that holds the peripheral portion of the laminated glass 10 to the vehicle body. In addition, the bus bars and electrodes electrically connected to the light emitting device 20 can be concealed so as to be difficult to see from the outside and / or inside of the vehicle.

[0023] The shielding layer 14 can be formed, for example, by applying a ceramic color paste containing a fusible glass frit containing a black pigment onto a glass plate by screen printing or the like, and then firing the paste, but is not limited thereto. The shielding layer 14 may also be formed, for example, by applying an organic ink containing a black or dark color pigment onto a glass plate by screen printing or the like, and then drying the ink.

[0024] 1(a) and (b), the shielding layer 14 is provided only on the peripheral edge of the interior surface of the glass plate 11. However, the shielding layer 14 may be provided only on the peripheral edge of the interior surface of the glass plate 12, or may be provided on both the peripheral edge of the interior surface of the glass plate 11 and the peripheral edge of the interior surface of the glass plate 12.

[0025] A dam rubber 31 is disposed between the shielding layer 14 of the laminated glass 10 and a body flange 33 of the vehicle, and the laminated glass 10 and the body flange 33 are bonded together by a urethane adhesive 32 located on the periphery of the laminated glass 10 rather than the dam rubber 31. This allows the periphery of the laminated glass 10 to be held to the vehicle body. To improve the design from the inside of the vehicle, an interior material 34 of the vehicle is provided so as to cover the periphery of the laminated glass 10, the dam rubber 31, the urethane adhesive 32, and the body flange 33. Therefore, a space S is formed between the inside surface of the laminated glass 10, the urethane adhesive 32, and the interior material 34.

[0026] In the narrow sense, the space S is a space surrounded by the laminated glass 10, the urethane adhesive 32, the body flange 33, and the interior material 34. When there is a gap between the body flange 33 and the interior material 34, the body flange 33 may be virtually extended toward the interior material 34 side, and when there is a gap between the laminated glass 10 and the interior material 34, the interior material 34 may be virtually extended toward the laminated glass 10 side to define the space S in the narrow sense.

[0027] The dam rubber 31 serves as a spacer that defines the distance between the laminated glass 10 and the body flange 33, and also serves as a dam that prevents the urethane adhesive 32 from flowing out before hardening. The material of the dam rubber 31 is, for example, polyethylene or ethylene propylene diene rubber. Although the dam rubber 31 is disposed in the space S, the provision of the dam rubber 31 is not essential, and the dam rubber 31 is disposed when necessary.

[0028] The light-emitting device 20 is a device that emits light into the interior of the vehicle, and includes a plurality of light-emitting elements 21 and a light-guiding material 22. The light-emitting device 20 causes one or a plurality of light-emitting elements 21 to emit light, and guides the emitted light to the light-guiding material 22, and can, for example, provide notifications, warning displays, and the like. For example, when the vehicle approaches a vehicle traveling ahead, a predetermined number of light-emitting elements 21 may be turned on or flashed to warn the driver of danger. The light-emitting device 20 may be used as a room lamp, an ultraviolet sterilization lamp, or the like.

[0029] The light-emitting elements 21 can be disposed at one or more locations of the upper edge 101, the lower edge 102, the left edge 103, and the right edge 104 of the laminated glass 10, but in this embodiment, as an example, the light-emitting elements 21 are disposed in a row at predetermined intervals along each of the lower edge 102, the left edge 103, and the right edge 104. However, if no other components such as a camera are disposed on the upper edge 101 and the light-emitting elements 21 can be disposed thereon, the light-emitting elements 21 may be disposed on the upper edge 101 as necessary.

[0030] At least a part of the light emitting device 20 is disposed in the space S. In this embodiment, the light emitting element 21 and the light guiding material 22 are fixed to the laminated glass 10, and the entire light emitting element 21 and a part of the light guiding material 22 are disposed in the space S. When the laminated glass 10 is viewed in plan, it is preferable that the light emitting element 21 is disposed at a position overlapping with the shielding layer 14, from the viewpoint of being concealed from the outside.

[0031] The light emitting element 21 is mounted on, for example, a substrate, and the substrate is fixed to the shielding layer 14 by adhesion or the like. The substrate is made of, for example, polyethylene terephthalate, polyethylene naphthalate, polyaniline, polythiophene, carbon nanotubes, graphene, or the like. However, the light emitting element 21 may be fixed directly to the shielding layer 14 by an adhesive or the like without using a substrate. The light emitting color of the light emitting element 21 is not particularly limited, and may be, for example, red, green, blue, yellow, white, or the like. The light emitting device 20 may have a plurality of light emitting elements 21 with different light emitting colors from each other.

[0032] The light emitting element 21 is, for example, an LED (Light Emitting Diode). The light emitting element 21 may be an organic EL (Organic Electro-Luminescence), an inorganic EL (Inorganic Electro-Luminescence), or the like. The LED here includes a micro LED. The light emitting element 21 may be a hot cathode fluorescent lamp (HCFL), a cold cathode fluorescent lamp (CCFL), or an incandescent light bulb.

[0033] The shape of the light-emitting element 21 is not particularly limited, but may be, for example, a rectangular parallelepiped. Examples of the size of the light-emitting element 21 when it is a rectangular parallelepiped include length 1.0 mm × width 0.5 mm × height 0.2 mm, length 1.6 mm × width 0.8 mm × height 0.3 mm, length 3.2 mm × width 2.0 mm × height 1.0 mm, etc.

[0034] When the light emitting element 21 is an LED, the shape of the light emitting element 21 is, for example, a length of 0.1 mm to 3.2 mm, a width of 0.1 mm to 2.0 mm, and a height of 0.1 mm to 1.0 mm. When the light emitting element 21 is a micro LED, the shape of the light emitting element 21 is, for example, a length and a width of 100 μm or less, preferably 50 μm or less, and more preferably 20 μm or less. The lower limit values ​​of both the length and width of the micro LED are preferably 3 μm or more in view of various manufacturing conditions, etc., particularly in order to reduce edge effects. The height of the micro LED is 10 μm or more and 50 μm or less.

[0035] It is also possible to use a structure in which a plurality of light emitting elements 21 are arranged at predetermined intervals and formed into a tape shape as a whole (for example, a tape LED or a line LED).

[0036] The light-guiding material 22 is disposed at each of the lower edge portion 102, the left edge portion 103, and the right edge portion 104, toward the center of the surface of the laminated glass 10 on the vehicle interior side relative to the light-emitting elements 21, for example so as to be in contact with the light-emitting elements 21. The light-guiding material 22 guides and emits light emitted by the light-emitting elements 21, thereby illuminating a part or all of the lower edge portion 102, the left edge portion 103, and the right edge portion 104 of the laminated glass 10. The light-guiding material 22 may be, for example, an elongated sheet integrated with a plurality of light-emitting elements 21. The light-guiding material 22 may be, for example, printed directly on the laminated glass 10.

[0037] A part of the light-guiding material 22 is disposed in the space S, and the other part protrudes outside the space S. When the laminated glass 10 is viewed in a plan view, the light-guiding material 22 is preferably disposed at a position overlapping with the shielding layer 14, in that it can be concealed from the outside. An end of the light-guiding material 22 toward the center of the surface on the interior side of the laminated glass 10 may extend to a position overlapping with an end of the shielding layer 14 on the inner side of the laminated glass 10 in a plan view. The larger the area of ​​the light-guiding material 22 that protrudes from the space S to the inside of the laminated glass 10, the easier it is to view the light emitted by the light-emitting element 21 from the interior side of the vehicle.

[0038] For example, an injection molded light guide can be used as the light guide 22. The injection molded light guide is made by injection molding a transparent resin material such as acrylic, polycarbonate, polyethylene terephthalate, urethane, etc., and the light emission method can be appropriately selected from the prism method, blast method, dot method, etc. Also, a known optical fiber light guide or liquid light guide can be used as the light guide 22.

[0039] In addition, instead of or in addition to the light guide material 22, a reflector that reflects the light emitted from the light emitting element 21 and / or the light guide material 22, or a diffusing material that diffuses the light emitted from the light emitting element 21 and / or the light guide material 22 may be disposed at least partially in the space S, or may be disposed entirely in the space S. That is, the light emitting device 20 may have an optical member including at least one of the light guide material 22, the reflector, and the diffusing material in addition to the light emitting element 21. The reflector or the diffusing material may be disposed on the laminated glass 10 side, or may be disposed on the surface of the dam rubber 31 on the light emitting element 21 side, the surface of the body flange 33 on the light emitting element 21 side, or the surface of the interior material 34 on the light emitting element 21 side. Examples of the reflector include a member containing titania or zirconia. The reflector may be a white colored ceramic layer. Examples of the diffusing material include a member having fine particles such as titanium oxide or coated mica, a member having a blasted surface, and a member having a concave-convex lens structure.

[0040] The reflective material and / or diffusing material may be made of a transparent material. When the reflective material and / or diffusing material made of a transparent material is disposed on the laminated glass 10 side, the reflective material and / or diffusing material does not necessarily have to entirely overlap with the shielding layer 14 in a plan view. For example, the reflective material and / or diffusing material on the vehicle inner side of the laminated glass 10 may extend further toward the center than the shielding layer 14 when the laminated glass 10 is viewed in a plan view. This makes it possible to easily allow the light of the light-emitting element 21 to reach the vehicle inner side while ensuring visibility as a vehicle window.

[0041] Thus, in the vehicle window structure 1, at least a portion of the light emitting device 20 is disposed in the space S formed between the laminated glass 10, the urethane adhesive 32, and the interior material 34. By effectively utilizing the space S, which has not been actively used in the past, it is possible to dispose the light emitting device 20 in a position that is difficult to see from the inside and outside of the vehicle.

[0042] In addition, in the conventional embodiment in which the light-emitting device is enclosed in the interlayer of the laminated glass, for example, if a crack occurs in the glass plate during the manufacturing process of the laminated glass or if the light-emitting device malfunctions, the entire laminated glass becomes unusable. In contrast, by disposing the light-emitting device 20 on the outside of the laminated glass 10 (the opposite side of the interlayer 13 of the glass plates 11 and 12) as in the present embodiment, for example, if the light-emitting device malfunctions, only the light-emitting device needs to be replaced, which improves production efficiency and contributes to reducing production costs. The same is true after the product is released to the market. For example, after the laminated glass is installed in a vehicle, if the laminated glass is damaged by flying stones or the like, only the laminated glass needs to be replaced, and if the light-emitting device breaks down, only the light-emitting device can be easily replaced, which also provides excellent maintainability.

[0043] Here, the glass plate 11, the glass plate 12, and the interlayer film 13 will be described in detail.

[0044] [Glass plate] The glass plates 11 and 12 may be inorganic glass or organic glass. Examples of inorganic glass that can be used include, without particular limitation, soda-lime glass, aluminosilicate glass, borosilicate glass, alkali-free glass, and quartz glass. The glass plate 12 located on the vehicle exterior side of the laminated glass 10 is preferably inorganic glass from the viewpoint of scratch resistance, and is preferably soda-lime glass from the viewpoint of formability. When the glass plates 11 and 12 are soda-lime glass, clear glass, green glass containing a predetermined amount or more of iron components, and UV-cut green glass can be suitably used.

[0045] The inorganic glass may be either unstrengthened glass or tempered glass. Unstrengthened glass is obtained by forming molten glass into a plate shape and slowly cooling it. Tempered glass is obtained by forming a compressive stress layer on the surface of unstrengthened glass.

[0046] The tempered glass may be either physically tempered glass such as air-cooled tempered glass or chemically tempered glass. When the tempered glass is physically tempered glass, the glass surface can be tempered by generating a compressive stress layer on the glass surface due to the temperature difference between the glass surface and the inside of the glass by an operation other than slow cooling, such as rapidly cooling a glass sheet uniformly heated in bending from a temperature near the softening point.

[0047] When the tempered glass is chemically tempered glass, for example, after bending, the glass surface can be tempered by generating a compressive stress on the glass surface by an ion exchange method or the like. In addition, glass that absorbs ultraviolet or infrared rays may be used as the inorganic glass. Furthermore, the inorganic glass is preferably transparent, but may be a glass plate that is colored to the extent that the transparency is not impaired.

[0048] On the other hand, examples of materials for organic glass include transparent resins such as polycarbonate, acrylic resins such as polymethyl methacrylate, polyvinyl chloride, and polystyrene.

[0049] Although the glass plates 11 and 12 have been described as a single glass plate, the glass plates 11 and 12 may be different glass plates. For example, one may be inorganic glass and the other organic glass, or one may be tempered glass and the other untempered glass. The glass plates 11 and 12 may be a combination of various glass plates other than those exemplified.

[0050] The shape of the glass plates 11 and 12 is not particularly limited to a rectangular shape, and may be processed into various shapes and curvatures. Gravity forming, press forming, roller forming, etc. are used for bending the glass plates 11 and 12. The forming method of the glass plates 11 and 12 is also not particularly limited, but for example, in the case of inorganic glass, glass plates formed by a float method or the like are preferable.

[0051] The thickness of the glass plate 12 is preferably 1.1 mm or more and 3 mm or less at the thinnest part. When the thickness of the glass plate 12 is 1.1 mm or more, the strength such as resistance to flying stones is sufficient, and when the thickness is 3 mm or less, the mass of the laminated glass 10 does not become too large, which is preferable in terms of fuel efficiency of the vehicle. The thickness of the glass plate 12 is more preferably 1.8 mm or more and 2.8 mm or less at the thinnest part, further preferably 1.8 mm or more and 2.6 mm or less, further preferably 1.8 mm or more and 2.2 mm or less, and further preferably 1.8 mm or more and 2.0 mm or less.

[0052] The thickness of the glass plate 11 is preferably 0.3 mm or more and 2.3 mm or less. When the thickness of the glass plate 11 is 0.3 mm or more, the glass plate 11 is easy to handle, and when the thickness is 2.3 mm or less, the weight does not become too large.

[0053] In addition, the glass sheets 11 and 12 may be flat or curved. However, if the glass sheets 11 and 12 are curved and the thickness of the glass sheet 11 is not appropriate, forming two sheets of glass with particularly deep curves as the glass sheets 11 and 12 will result in a mismatch between the shapes of the two sheets, which will have a significant effect on the glass quality, such as residual stress after compression bonding.

[0054] However, if the thickness of the glass plate 11 is 0.3 mm or more and 2.3 mm or less, sufficient glass quality such as residual stress can be maintained. If the thickness of the glass plate 11 is 0.3 mm or more and 2.3 mm or less, it is particularly effective in maintaining glass quality in glass with a deep curve. The thickness of the glass plate 11 is more preferably 0.5 mm or more and 2.1 mm or less, and even more preferably 0.7 mm or more and 1.9 mm or less. If it is within this range, the above-mentioned effects become more remarkable.

[0055] When the laminated glass 10 is used in, for example, a head-up display, the glass sheets 11 and / or 12 may not have a constant thickness, but may have a thickness that varies from place to place as necessary. For example, when the laminated glass 10 is a windshield, one or both of the glass sheets 11 and 12 may have a wedge-shaped cross section whose thickness increases from the lower edge to the upper edge of the windshield when the windshield is installed in a vehicle. In this case, if the thickness of the interlayer film 13 is constant, the total wedge angle of the glass sheets 11 and 12 varies, for example, in the range of more than 0 mrad to 1.0 mrad or less.

[0056] A coating having water repellency and ultraviolet or infrared blocking properties, or a coating having low reflection properties and low radiation properties may be provided on the side of the glass plates 11 and / or 12 opposite to the side in contact with the interlayer film 13. Furthermore, a coating having ultraviolet or infrared blocking properties, low radiation properties, visible light absorption properties, coloring properties, etc. may be provided on the side of the glass plates 11 and / or 12 in contact with the interlayer film 13.

[0057] When the glass sheets 11 and 12 are curved inorganic glass, the glass sheets 11 and 12 are bent after being formed by a float method and before being bonded with the interlayer film 13. The bending is performed by softening the glass by heating. The heating temperature of the glass during bending is about 550°C to 700°C.

[0058] [Interlayer] Thermoplastic resins are often used for the intermediate film 13, and examples of such thermoplastic resins include those conventionally used for this type of application, such as plasticized polyvinyl acetal resins, plasticized polyvinyl chloride resins, saturated polyester resins, plasticized saturated polyester resins, polyurethane resins, plasticized polyurethane resins, ethylene-vinyl acetate copolymer resins, ethylene-ethyl acrylate copolymer resins, cycloolefin polymer resins, ionomer resins, etc. Also suitable for use is a resin composition containing a modified hydrogenated block copolymer, as described in Japanese Patent No. 6065221.

[0059] Among these, plasticized polyvinyl acetal resins are preferably used because they have an excellent balance of various properties such as transparency, weather resistance, strength, adhesive strength, penetration resistance, impact energy absorption, moisture resistance, heat insulation, and sound insulation. These thermoplastic resins may be used alone or in combination of two or more. The term "plasticized" in the plasticized polyvinyl acetal resin means that it is plasticized by adding a plasticizer. The same applies to other plasticized resins.

[0060] However, when a specific object is enclosed in the interlayer film 13, the object may be deteriorated by a specific plasticizer depending on the type of object, and in that case, it is preferable to use a resin that does not substantially contain the plasticizer. In other words, it may be preferable that the interlayer film 13 does not contain a plasticizer. Examples of resins that do not contain plasticizers include ethylene-vinyl acetate copolymer resins.

[0061] Examples of the polyvinyl acetal resin include polyvinyl formal resin obtained by reacting polyvinyl alcohol (hereinafter, sometimes referred to as "PVA" as necessary) with formaldehyde, polyvinyl acetal resin in the narrow sense obtained by reacting PVA with acetaldehyde, and polyvinyl butyral resin (hereinafter, sometimes referred to as "PVB" as necessary) obtained by reacting PVA with n-butylaldehyde, and the like. In particular, PVB is preferred because it has an excellent balance of various properties such as transparency, weather resistance, strength, adhesive strength, penetration resistance, impact energy absorption, moisture resistance, heat insulation, and sound insulation. These polyvinyl acetal resins may be used alone or in combination of two or more kinds.

[0062] However, the material forming the intermediate film 13 is not limited to thermoplastic resin. The intermediate film 13 may also contain functional particles such as infrared absorbing agents, ultraviolet absorbing agents, and luminescent agents. The intermediate film 13 may also have a colored portion called a shade band (a region having a function of reducing visible light transmittance). The color pigment used to form the colored portion is not particularly limited as long as it can be used for plastics and the visible light transmittance of the colored portion is 40% or less. For example, organic color pigments such as azo-based, phthalocyanine-based, quinacridone-based, perylene-based, perinone-based, dioxazine-based, anthraquinone-based, and isoindolino-based pigments, and inorganic color pigments such as oxides, hydroxides, sulfides, chromates, sulfates, carbonates, silicates, phosphates, arsenates, ferrocyanides, carbon, and metal powders may be used. These color pigments may be used alone or in combination of two or more. The amount of color pigment added is not particularly limited and may be any amount according to the desired color tone, so long as the visible light transmittance of the colored portion is 40% or less.

[0063] The thickness of the interlayer film 13 is preferably 0.5 mm or more at its thinnest part. When the interlayer film 13 is made up of multiple layers, the thickness of the interlayer film 13 is the total thickness of the layers. If the thickness of the interlayer film 13 at its thinnest part is 0.5 mm or more, the impact resistance required for laminated glass is sufficient. Furthermore, the thickness of the interlayer film 13 is preferably 3 mm or less at its thickest part. If the maximum thickness of the interlayer film 13 is 3 mm or less, the mass of the laminated glass does not become too large. The maximum thickness of the interlayer film 13 is more preferably 2.8 mm or less, and even more preferably 2.6 mm or less.

[0064] When the laminated glass 10 is used in, for example, a head-up display, the interlayer film 13 does not have to have a constant thickness, and the thickness may vary from place to place as necessary. For example, when the laminated glass 10 is a windshield, the interlayer film 13 may have a wedge-shaped cross section whose thickness increases from the lower edge to the upper edge of the windshield when the windshield is installed in a vehicle. In this case, if the thicknesses of the glass sheets 11 and 12 are constant, the wedge angle of the interlayer film 13 varies, for example, in the range of more than 0 mrad to 1.0 mrad or less.

[0065] The interlayer film 13 may have three or more layers. For example, the sound insulation of the laminated glass 10 can be improved by forming the interlayer film from three or more layers and making the shear modulus of any layer other than the layers on both sides smaller than the shear modulus of the layers on both sides by adjusting the plasticizer or the like. In this case, the shear modulus of the layers on both sides may be the same or different.

[0066] Furthermore, when the interlayer film 13 is made up of multiple layers, it is preferable that each layer is made of the same material, but they may be made of different materials. However, from the viewpoint of adhesion to the glass sheets 11 and 12, or the functional materials to be incorporated into the laminated glass 10, it is preferable that at least 50% of the thickness of the interlayer film 13 be made of the above-mentioned materials.

[0067] To produce the interlayer film 13, for example, the above-mentioned resin material that will become the interlayer film is appropriately selected and extruded in a heated and molten state using an extruder. The extrusion conditions, such as the extrusion speed of the extruder, are set so as to be uniform. Thereafter, the extruded resin film is stretched as necessary to give curvature to the upper and lower sides in accordance with the design of the laminated glass, thereby completing the interlayer film 13.

[0068] [Laminated Glass] The total thickness of the laminated glass 10 is preferably 2.8 mm or more and 10 mm or less. If the total thickness of the laminated glass 10 is 2.8 mm or more, sufficient rigidity can be ensured. If the total thickness of the laminated glass 10 is 10 mm or less, sufficient transmittance can be obtained and haze can be reduced.

[0069] The plate misalignment between the glass plates 11 and 12 is preferably 1.5 mm or less, and more preferably 1 mm or less, on at least one side of the laminated glass 10. Here, the plate misalignment between the glass plates 11 and 12 refers to the amount of misalignment between the end of the glass plate 11 and the end of the glass plate 12 in a plan view.

[0070] It is preferable that the misalignment between the glass plates 11 and 12 be 1.5 mm or less along at least one side of the laminated glass 10 in order to avoid impairing the appearance. It is even more preferable that the misalignment between the glass plates 11 and 12 be 1.0 mm or less along at least one side of the laminated glass 10 in order to avoid impairing the appearance.

[0071] To manufacture the laminated glass 10, an interlayer film 13 is sandwiched between glass plates 11 and 12 to form a laminate. Then, for example, this laminate is placed in a rubber bag, a rubber chamber, a resin bag, or the like, and bonded in a vacuum with a gauge pressure of -65 kPa to -100 kPa at a temperature of about 70°C to 110°C. The heating conditions, temperature conditions, and lamination method are appropriately selected.

[0072] Furthermore, for example, by performing a heating and pressing process under conditions of a temperature of 100° C. to 150° C. and a pressure of 0.6 MPa to 1.3 MPa, a laminated glass 10 with even greater durability can be obtained. However, in some cases, this heating and pressing process may not be used in consideration of simplification of the process and the properties of the material to be filled in the laminated glass 10.

[0073] That is, a method called "cold bending" may be used in which either or both of the glass plates 11 and 12 are joined in a state of elastic deformation to each other. Cold bending can be achieved by using a laminate consisting of the glass plates 11, 12, and the interlayer film 13 fixed by a temporary fixing means such as tape, a conventionally known preliminary pressure bonding device such as a nip roller, a rubber bag, or a rubber chamber, and an autoclave.

[0074] In addition to the interlayer 13, a film or device having functions such as heating, infrared reflection, light emission, power generation, light control, touch panel, visible light reflection, scattering, decoration, absorption, etc. may be provided between the glass plates 11 and 12, so long as the effects of the present invention are not impaired. In addition, the surface of the laminated glass 10 may have a film having functions such as anti-fogging, water repellency, heat shielding, low reflection, etc. In addition, the surface of the glass plate 11 facing the vehicle exterior and the surface of the glass plate 12 facing the vehicle interior may have a film having functions such as heat shielding, heat generation, etc.

[0075] Modification of the First Embodiment In the modified example of the first embodiment, an example of a vehicle window structure in which a light emitting device is attached in a different manner from that in the first embodiment is shown. Note that in the modified example of the first embodiment, the description of the same components as those in the already described embodiment may be omitted.

[0076] Fig. 2(a) is a cross-sectional view illustrating a vehicle window structure according to Modification 1 of the first embodiment (before a light-emitting device is mounted) and shows a cross section corresponding to Fig. 1(b). Fig. 2(b) is a cross-sectional view illustrating a vehicle window structure according to Modification 1 of the first embodiment (after a light-emitting device is mounted) and shows a cross section corresponding to Fig. 1(b). Fig. 2(c) is a perspective view illustrating the vicinity of a light-emitting element of the light-emitting device.

[0077] As shown in Fig. 2(a) to Fig. 2(c), a vehicle window structure 1A according to the first modification includes a laminated glass 10 and a light emitting device 20A. The light emitting device 20A is similar to the light emitting device 20 in terms of the light emitting element 21 and the light guiding material 22, but differs from the light emitting device 20 in that a convex mounting terminal 211 is provided on the side of the light emitting element 21 opposite to the light guiding material 22. The mounting terminals 211 may be provided in the same number as the light emitting elements 21, for example, but are not limited to this.

[0078] Also, a bracket 31A is provided instead of the dam rubber 31. The bracket 31A is in contact with the laminated glass 10 and the body flange 33. The bracket 31A is a spacer that defines the distance between the laminated glass 10 and the body flange 33, and also serves as a dam that prevents the urethane adhesive 32 from flowing out before hardening. The bracket 31A is provided with a concave mounting terminal 311, and when the mounting terminal 211 of the light-emitting element 21 is inserted into the mounting terminal 311, the two are fitted together and the light-emitting device 20A is fixed to the bracket 31A. With this structure, the light-emitting device 20A can be freely attached and detached to the bracket 31A. For example, if the light-emitting device 20A breaks down, it can be easily replaced.

[0079] The mounting terminals 211 and 311 may be a male connector and a female connector, and when these are joined together, the light emitting device 20A and the wiring provided within the bracket 31A may be electrically connected.

[0080] FIG. 3(a) is a cross-sectional view illustrating a vehicle window structure according to a second modified example of the first embodiment, and shows a cross section corresponding to FIG. 1(b).

[0081] As shown in FIG. 3(a), the vehicle window structure 1B according to the second modification includes a laminated glass 10 and a light-emitting device 20B. The light-emitting device 20B includes a light-emitting element 21 mounted on a base material 23, and a reflecting material 24. The base material 23 is fixed to a side surface of the dam rubber 31 facing the vehicle interior side by adhesion or the like. The light-emitting element 21 may be directly fixed to the side surface of the dam rubber 31 facing the vehicle interior side without providing the base material 23. Alternatively, instead of the light-emitting element 21, a light-emitting unit in which the light-emitting element and the light-guiding material are integrated may be fixed to the side surface of the dam rubber 31 facing the vehicle interior side. The light emitted by the light-emitting element 21 is reflected by the reflecting material 24 and becomes visible from the vehicle interior side. The same effect can be obtained even if a diffusing material is provided instead of the reflecting material 24.

[0082] Fig. 3(b) is a cross-sectional view illustrating a vehicle window structure according to a third modification of the first embodiment, and shows a cross section corresponding to Fig. 1(b). Fig. 3(c) is a perspective view illustrating a light-emitting element portion of a light-emitting device according to the third modification.

[0083] As shown in FIG. 3(b) and FIG. 3(c), a vehicle window structure 1C according to the third modification includes a laminated glass 10 and a light-emitting device 20C. The light-emitting device 20C includes a light-emitting element 21 and a reflecting material 24. In the vehicle window structure 1C, a bracket 31C is provided instead of the dam rubber 31, and the light-emitting element 21 is fixed to a light-emitting element mounting groove 313 provided in the bracket 31C. It is preferable that the light-emitting element 21 protrudes from the surface of the bracket 31C facing the vehicle interior side in terms of diffusing light. Note that, instead of the light-emitting element 21, a light-emitting element part of a light-emitting unit in which a light-emitting element and a light-guiding material are integrated may be fixed to the light-emitting element mounting groove 313 provided in the bracket 31C. The light emitted by the light-emitting element 21 is reflected by the reflecting material 24 and becomes visible from the vehicle interior side. Note that the same effect can be obtained even if a diffusing material is provided instead of the reflecting material 24.

[0084] FIG. 4(a) is a cross-sectional view illustrating a vehicle window structure according to a fourth modified example of the first embodiment, and shows a cross section corresponding to FIG. 1(b).

[0085] As shown in FIG. 4(a), the vehicle window structure 1D according to the fourth modification includes a laminated glass 10 and a light-emitting device 20D. The light-emitting device 20D includes a light-emitting element 21 mounted on a base material 23 and a reflector 24. As in the vehicle window structure 1D, instead of the dam rubber 31, a bracket 31D having an inclined surface facing the vehicle interior side of the laminated glass 10 may be provided, and the light-emitting element 21 mounted on the vehicle interior may be fixed to the inclined surface of the bracket 31D by adhesion or the like. In the example shown in FIG. 4(a), the bracket 31D has an inclined surface inclined at about 20° with respect to the vehicle interior side of the laminated glass 10 based on the thickness direction of the laminated glass 10. The light-emitting element 21 may be directly fixed to the inclined surface of the bracket 31D facing the vehicle interior without providing the base material 23. Alternatively, instead of the light-emitting element 21, a light-emitting unit in which the light-emitting element and the light-guiding material are integrated may be fixed to the inclined surface of the bracket 31D facing the vehicle interior. The light emitted by the light-emitting element 21 is reflected by the reflecting material 24 and becomes visible from inside the vehicle. By adjusting the angle of the inclined surface, the light emitted by the light-emitting element 21 can be efficiently reflected toward the inside of the vehicle. The same effect can be obtained by providing a diffusing material instead of the reflecting material 24.

[0086] FIG. 4(b) is a cross-sectional view illustrating a vehicle window structure according to a fifth modified example of the first embodiment, and shows a cross section corresponding to FIG. 1(b).

[0087] As shown in FIG. 4(b), the vehicle window structure 1E according to the fifth modification includes a laminated glass 10 and a light-emitting device 20E. The light-emitting device 20E includes a light-emitting element 21 mounted on a base material 23. Instead of the dam rubber 31, a bracket 31E having an inclined surface facing the interior material 34 may be provided as in the vehicle window structure 1E, and the light-emitting element 21 mounted on the base material 23 may be fixed to the inclined surface of the bracket 31E by adhesion or the like. In the example shown in FIG. 4(b), the bracket 31E has an inclined surface inclined at about 50° toward the vehicle interior side based on the thickness direction of the laminated glass 10. The light-emitting element 21 may be directly fixed to the inclined surface of the bracket 31E facing the interior material 34 without providing the base material 23. Alternatively, instead of the light-emitting element 21, a light-emitting unit in which the light-emitting element and the light-guiding material are integrated may be fixed to the inclined surface of the bracket 31E facing the interior material 34. The light emitted from the light emitting element 21 is transmitted through a transmission area 341 provided in the interior material 34 and becomes visible from inside the vehicle. The transmission area 341 may be provided with a light guiding or diffusing function to give directionality to the light.

[0088] As described above, the inclined surface is inclined at a predetermined angle from the thickness direction of the laminated glass 10 as 0° toward the vehicle interior side surface or the interior material 34 side of the laminated glass 10. The inclination angle can be appropriately adjusted from 5° to 85°. The inclination angle may be 10° or more, 20° or more, 30° or more, or 45° or more. The inclination angle may be 80° or less, 70° or less, 60° or less, 50° or less, or 45° or less.

[0089] FIG. 5(a) is a cross-sectional view illustrating a vehicle window structure according to a sixth modified example of the first embodiment, and shows a cross section corresponding to FIG. 1(b).

[0090] As shown in FIG. 5(a), the vehicle window structure 1F according to the sixth modification includes a laminated glass 10 and a light-emitting device 20F. The light-emitting device 20F includes a light-emitting element 21 mounted on a base material 23 and a reflecting material 24. As in the vehicle window structure 1F, the light-emitting element 21 mounted on the base material 23 may be fixed by adhesion or the like to the surface of the interior material 34 facing the dam rubber 31. The light-emitting element 21 may be directly fixed to the surface of the interior material 34 facing the dam rubber 31 without providing the base material 23. Alternatively, instead of the light-emitting element 21, a light-emitting unit in which the light-emitting element and the light-guiding material are integrated may be fixed to the surface of the interior material 34 facing the dam rubber 31. The light emitted by the light-emitting element 21 is reflected by the reflecting material 24 provided on the surface of the dam rubber 31 facing the vehicle interior, and is visible from the vehicle interior. The same effect can be obtained by providing a diffusing material instead of the reflecting material 24.

[0091] FIG. 5(b) is a cross-sectional view illustrating a vehicle window structure according to a seventh modified example of the first embodiment, and shows a cross section corresponding to FIG. 1(b).

[0092] As shown in FIG. 5(b), the vehicle window structure 1G according to the seventh modification includes a laminated glass 10 and a light-emitting device 20G. The light-emitting device 20G includes a light-emitting element 21 mounted on a base material 23 and a reflector 24G. In the vehicle window structure 1G, the bottom side of the dam rubber 31G extends toward the interior material 34 along the shielding layer 14, and an L-shaped reflector 24G is provided on the bottom side of the dam rubber 31G, i.e., the extending portion on the laminated glass 10 side and the side surface of the dam rubber 31G on the vehicle interior side. The light emitted from the light-emitting element 21 is reflected by the L-shaped reflector 24G, and passes through a transmission area 341 provided in the interior material 34 to be visible from the vehicle interior side. The transmission area 341 may be provided with a light-guiding or diffusion function to have directionality.

[0093] FIG. 6(a) is a cross-sectional view illustrating a vehicle window structure according to an eighth modified example of the first embodiment, and shows a cross section corresponding to FIG. 1(b).

[0094] As shown in FIG. 6(a), the vehicle window structure 1H according to the eighth modification includes a laminated glass 10 and a light-emitting device 20H. The light-emitting device 20H includes a light-emitting element 21 mounted on a base material 23 and a reflector 24. As in the vehicle window structure 1H, the light-emitting element 21 mounted on the base material 23 may be fixed by adhesion or the like to the surface of the body flange 33 facing the laminated glass 10. The light-emitting element 21 may be directly fixed to the surface of the body flange 33 facing the laminated glass 10 without providing the base material 23. Alternatively, instead of the light-emitting element 21, a light-emitting unit in which the light-emitting element and the light-guiding material are integrated may be fixed to the surface of the body flange 33 facing the laminated glass 10. The light emitted by the light-emitting element 21 is reflected by the reflector 24 provided on the shielding layer 14 exposed to the vehicle interior side beyond the dam rubber 31, and is visible from the vehicle interior side. The same effect can be obtained even if a diffusing material is provided instead of the reflector 24.

[0095] FIG. 6(b) is a cross-sectional view illustrating a vehicle window structure according to a ninth modified example of the first embodiment, and shows a cross section corresponding to FIG. 1(b).

[0096] As shown in FIG. 6(b), the vehicle window structure 1I according to the ninth modification includes a laminated glass 10 and a light-emitting device 20I. The light-emitting device 20I includes a light-emitting element 21 mounted on a base material 23. As in the vehicle window structure 1I, the light-emitting element 21 mounted on the base material 23 may be fixed by adhesion or the like to the surface of the body flange 33 facing away from the laminated glass 10. The light-emitting element 21 may be directly fixed to the surface of the body flange 33 facing away from the laminated glass 10 without providing the base material 23. Alternatively, instead of the light-emitting element 21, a light-emitting unit in which a light-emitting element and a light-guiding material are integrated may be fixed to the surface of the body flange 33 facing away from the laminated glass 10. The light emitted from the light-emitting element 21 passes through a transmission region 341 provided in the interior material 34 and becomes visible from the inside of the vehicle. The transmission region 341 may be provided with a light-guiding or diffusion function to have directionality.

[0097] Second Embodiment In the second embodiment of the present invention, an example of a vehicle window structure in which a light-emitting element is attached at a different position from that in the first embodiment is shown. Note that in the second embodiment, the description of the same components as those in the already described embodiments may be omitted.

[0098] 7(a) and (b) are diagrams illustrating a vehicle window structure according to a second embodiment, and Fig. 7(a) is a schematic diagram showing a state in which the vehicle window structure is attached to a vehicle and viewed from inside the vehicle to outside the vehicle. Fig. 7(b) is a partially enlarged cross-sectional view taken along line BB in Fig. 7(a). Note that Fig. 7(a) omits the illustration of the dam rubber 31 and the urethane adhesive 32 shown in Fig. 7(b).

[0099] 7(a)(b), the vehicle window structure 2 according to the second embodiment has a light-emitting device 20J having a light-emitting element 21 and a light-guiding material 22, and the light-emitting element 21 is disposed near both ends and near the center of each of the lower edge portion 102, the left edge portion 103, and the right edge portion 104. However, if no other members such as a camera are disposed in the upper edge portion 101 and the light-emitting element 21 can be disposed therein, the light-emitting element 21 may be disposed in the upper edge portion 101 as necessary. Furthermore, as long as the light-emitting element 21 and the light-guiding material 22 are disposed alternately along a predetermined edge portion of the laminated glass 10, the light-emitting element 21 does not necessarily have to be disposed near both ends and near the center of the predetermined edge portion.

[0100] The light-guiding material 22 is disposed in the space S, and receives light emitted by the light-emitting element 21 from an end portion and emits the light while guiding it, thereby illuminating part or all of the lower edge portion 102, the left edge portion 103, and the right edge portion 104 of the laminated glass 10. The light-emitting element 21 may be disposed in the space S. As the light-guiding material 22, for example, a known light-guiding rod (a rod body having a core layer and a clad layer having a predetermined refractive index difference), glass fiber, a light guide such as a liquid light guide that guides light using a light-transmitting liquid core, or the like can be used.

[0101] In this way, by arranging the light emitting elements 21 and the light guiding materials 22 alternately along a predetermined edge of the laminated glass 10 and guiding the light emitted by the light emitting elements 21 while the light guiding materials 22 emit the light, it is possible to illuminate a part or the whole of the predetermined edge of the laminated glass 10 with a small number of light emitting elements 21. In other words, a low-cost vehicle window structure can be realized.

[0102] In the vehicle window structure 2, similarly to the vehicle window structure 1 and the like, at least a portion of the light emitting device 20J is disposed in the space S formed between the glass plate 11, the dam rubber 31, and the interior material 34. By effectively utilizing the space S, which has not been actively used in the past, the light emitting device 20J can be disposed in a position that is difficult to see from inside the vehicle. Also, since it differs from the conventional form in which the light emitting device is enclosed in the intermediate film of the laminated glass, similarly to the vehicle window structure 1 and the like, it can contribute to reducing production costs and is also excellent in maintainability after the product is released on the market.

[0103] Modification of the Second Embodiment In the modified example of the second embodiment, an example of a vehicle window structure in which a light emitting device is attached in a different manner from that in the second embodiment is shown. Note that in the modified example of the second embodiment, the description of the same components as those in the already described embodiment may be omitted.

[0104] FIG. 8(a) is a cross-sectional view illustrating a vehicle window structure according to a first modified example of the second embodiment, and shows a cross section corresponding to FIG. 7(b).

[0105] In the vehicle window structure 2A according to the first modified example of the second embodiment shown in FIG. 8(a), a light guide material 22A is disposed between the laminated glass 10 and the body flange 33 instead of the dam rubber 31. The light guide material 22A has the same function as the light guide material 22. The light guide material 22A further serves as a spacer that defines the distance between the laminated glass 10 and the body flange 33, and also serves as a dam that prevents the urethane adhesive 32 from flowing out before hardening. That is, the light guide material 22A also serves as a spacer that defines the distance between the laminated glass 10 and the body flange 33. In this way, instead of the dam rubber 31, a light guide material 22A having a height approximately equal to that of the dam rubber 31 may be disposed.

[0106] FIG. 8(b) is a cross-sectional view illustrating a vehicle window structure according to Modification 2 of the second embodiment, and shows a cross section corresponding to FIG. 7(b).

[0107] 8(b), in a vehicle window structure 2B according to the second modification of the second embodiment, a bracket 31K is provided instead of the dam rubber 31, and the light guide material 22 is fixed to a light guide material attachment groove 315 provided in the bracket 31K. It is preferable that the light guide material 22 protrudes from the surface of the bracket 31K facing the vehicle interior side in terms of diffusing light.

[0108] FIG. 9(a) is a cross-sectional view illustrating a vehicle window structure according to a third modified example of the second embodiment, and shows a cross section corresponding to FIG. 7(b).

[0109] As in a vehicle window structure 2C according to a third modified example of the second embodiment shown in Fig. 9(a), a light-guiding material 22 may be fixed by adhesion or the like to a surface of an interior material 34 facing the dam rubber 31. The light emitted while being guided by the light-guiding material 22 is reflected by a reflecting material 24 provided on a surface of the dam rubber 31 facing the vehicle interior, and becomes visible from inside the vehicle. The same effect can be obtained by providing a diffusing material instead of the reflecting material 24.

[0110] Fig. 9(b) is a cross-sectional view illustrating a vehicle window structure according to Modification 4 of the second embodiment, and shows a cross section corresponding to Fig. 7(b). Even in the case where a light-guiding material 22 is arranged at the end of the interior material 34 on the laminated glass 10 side, as in the vehicle window structure 2D according to Modification 4 of the second embodiment shown in Fig. 9(b), the same effect as in the case of Fig. 9(a) is achieved.

[0111] Fig. 10(a) is a cross-sectional view illustrating a vehicle window structure according to Modification 5 of the second embodiment, and shows a cross section corresponding to Fig. 7(b). As in the vehicle window structure 2E according to Modification 5 of the second embodiment shown in Fig. 10(a), a fiber guide 28 may be provided on the shielding layer 14, and the fiber guide 28 may hold an optical fiber 29 serving as a light-guiding material.

[0112] Fig. 10(b) is a cross-sectional view illustrating a vehicle window structure according to Modification 6 of the second embodiment, and shows a cross section corresponding to Fig. 7(b). As in the vehicle window structure 2F according to Modification 6 of the second embodiment shown in Fig. 10(b), the dam rubber may not be provided, and the urethane adhesive 32 may function as a spacer. Note that the configuration of Fig. 10(b) can also be applied to the other forms shown in the first and second embodiments as long as the light-emitting element and the light-guiding material are not fixed to the dam rubber or a bracket replacing the dam rubber.

[0113] Although the preferred embodiments have been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications and substitutions can be made to the above-described embodiments without departing from the scope of the claims. The entire contents of the specification, claims, drawings and abstract of Japanese Patent Application No. 2020-095772, filed on June 1, 2020, are hereby incorporated by reference as the disclosure of the specification of the present invention. [Explanation of symbols]

[0114] 1, 1A-1I, 2, 2A-2D Vehicle window structure 10. Laminated Glass 101 upper edge 102 Lower edge 103 Left edge 104 Right edge 11, 12 Glass plate 13 Interlayer 14 Shielding layer 20, 20A, 20B, 20J Light-emitting device 21 Light emitting element 22, 22A light guide material 23 Base material 24 Reflective material 28 Fiber Guide 29 Optical Fiber 31 Dam Rubber 31A, 31C, 31D, 31E, 31K brackets 32 Urethane adhesive 33 Body flange 34 Interior materials 211, 311 Mounting terminal 313 Light emitting element mounting groove 315 Light guide material mounting groove 341 Transparent area

Claims

1. A vehicle window structure to be installed in an opening of a vehicle, The vehicle window structure includes a first glass plate, A light emitting device, At least a portion of the light emitting device is the first glass plate is disposed in a space formed between an adhesive that bonds the first glass plate to a body flange of the vehicle, and an interior material of the vehicle; the body flange has a region that extends in a direction opposite to an end of the first glass plate relative to a position in contact with the adhesive and faces the first glass plate, The interior material has a region facing the first glass plate across the body flange.

2. The light emitting device includes a light emitting element and 2. The vehicle window structure according to claim 1, further comprising an optical member including at least one of a light-guiding material into which the light emitted by the light-emitting element is incident, a reflecting material that reflects the light emitted by the light-emitting element, and a diffusing material that diffuses the light emitted by the light-emitting element.

3. The vehicle window structure according to claim 2 , wherein the light emitting element and / or the optical member is fixed to the first glass plate.

4. a spacer is provided between the first glass plate and the body flange to define a distance between the first glass plate and the body flange; The vehicle window structure according to claim 2 , wherein the light emitting element and / or the optical member is fixed to the spacer.

5. the optical member is disposed between the first glass plate and the body flange, The vehicle window structure according to claim 2 , wherein the optical member also serves as a spacer that defines a distance between the first glass plate and the body flange.

6. a spacer is provided to define a distance between the first glass plate and the body flange; The vehicle window structure according to claim 2 , wherein the light emitting element and the optical member are detachably attached to the spacer.

7. The vehicle window structure according to claim 4 , wherein the spacer has an inclined surface having an inclination angle of 5° to 85° with respect to a thickness direction of the first glass plate.

8. The vehicle window structure according to claim 2 , wherein the light emitting element and / or the optical member is fixed to the interior material.

9. The vehicle window structure according to claim 2 , wherein the light emitting element and / or the optical member is fixed to the body flange.

10. The vehicle window structure according to claim 2 , wherein light emitted from the light emitting element and / or the optical member passes through a transparent region provided in the interior material and reaches an interior side of the vehicle.

11. The vehicle window structure according to claim 2 , wherein the optical member is the light-guiding material.

12. The vehicle window structure according to claim 11, wherein a member that reflects or diffuses light emitted from the light-emitting element and / or the light-guiding material is disposed in the space.

13. the optical member is the reflector and / or the diffusing material, 11. The vehicle window structure according to claim 2, wherein the reflective material and / or the diffusing material is formed of a transparent material, is disposed on the vehicle interior surface of the first glass plate, and extends to the center side beyond a shielding layer formed on the peripheral portion of the vehicle interior surface of the first glass plate when the first glass plate is viewed in a plane.

14. 14. The vehicle window structure according to claim 2, wherein, when the first glass plate is viewed in a plan view, the light-emitting element and / or the optical component is arranged in a position overlapping with a shielding layer formed on a peripheral portion of the vehicle interior surface of the first glass plate.

15. The vehicle window structure according to claim 2 , wherein the light emitting elements are arranged in a row along a predetermined edge portion of the first glass plate.

16. The vehicle window structure according to claim 2 , wherein the light emitting elements and the optical members are alternately arranged along a predetermined edge portion of the first glass plate.

17. The vehicle window structure according to claim 1 , further comprising a second glass plate located on an outer side of the first glass plate, and an intermediate film is provided between the first glass plate and the second glass plate.

Images