Vehicle window structure

Abstract

The present invention provides a vehicle window structure capable of arranging a light-emitting device outside a laminated glass panel. This vehicle window structure is provided in a vehicle opening and comprises a first glass panel and a light-emitting device. At least a portion of the light-emitting device is arranged in a space formed between the first glass panel, an adhesive bonding the first glass panel to a vehicle body flange, and the vehicle interior trim.

Description

Technical Field

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

[0002] Technologies for enclosing structures such as light-emitting devices within laminated glass are known. For example, light-emitting diodes mounted on a printed circuit board are enclosed in the peripheral area of ​​laminated glass used as a windshield. For example, the light-emitting diodes are enclosed within the interlayer film of the laminated glass to display warning messages (such as collision prevention) to the driver (see, for example, Patent Document 1).

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application No. 2019-522613 Summary of the Invention

[0006] Technical problem to be solved by the invention

[0007] However, when light-emitting devices, such as LEDs, are enclosed within the interlayer film of laminated glass, cracks in the glass sheets or malfunctions of the light-emitting devices during the manufacturing process can render the entire laminated glass unusable. This results in reduced production efficiency and is a major contributor to increased production costs. Furthermore, laminated glass enclosed with light-emitting devices is less maintainable after it is released to the market.

[0008] The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a vehicle window structure in which a light-emitting device can be arranged outside a laminated glass or outside a single-plate glass.

[0009] Means of solving problems

[0010] A vehicle window structure according to one embodiment of the present invention is a vehicle window structure arranged in an opening portion of a vehicle, wherein the vehicle window structure has a first glass plate and a light-emitting device, and at least a portion of the light-emitting device is arranged in a space formed between the first glass plate, an adhesive bonding the first glass plate to the vehicle body flange, and the vehicle interior material.

[0011] Effects of the Invention

[0012] According to one disclosed embodiment, since the light-emitting device is arranged on the outside of the laminated glass or the outside of the single-plate glass, a vehicle window structure can be provided in which, even if cracks appear on the glass plate during the manufacturing process of the laminated glass or the single-plate glass, or if the light-emitting device malfunctions, the decrease in production efficiency and the increase in production costs can be suppressed, and the maintainability of the laminated glass or single-plate glass including at least a portion of the light-emitting device after it is put on the market is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 : Figure 1 (a) and (b) are views illustrating a vehicle window structure according to a first embodiment of the present invention.

[0014] Figure 2 : Figure 2 (a) to 2(c) are diagrams illustrating a vehicle window structure according to a first modification of the first embodiment.

[0015] Figure 3 : Figure 3 (a) to 3(c) are diagrams illustrating vehicle window structures according to Modifications 2 and 3 of the first embodiment.

[0016] Figure 4 : Figure 4 (a) and (b) are cross-sectional views illustrating vehicle window structures according to Modifications 4 and 5 of the first embodiment.

[0017] Figure 5 : Figure 5 (a) and (b) are cross-sectional views illustrating vehicle window structures according to Modifications 6 and 7 of the first embodiment.

[0018] Figure 6 : Figure 6 (a) and (b) are cross-sectional views illustrating vehicle window structures according to Modifications 8 and 9 of the first embodiment.

[0019] Figure 7 : Figure 7 (a) and (b) are views illustrating a vehicle window structure according to a second embodiment of the present invention.

[0020] Figure 8 : Figure 8 (a) and (b) are cross-sectional views illustrating vehicle window structures according to Modifications 1 and 2 of the second embodiment.

[0021] Figure 9 : Figure 9 (a) and (b) are cross-sectional views illustrating vehicle window structures according to Modifications 3 and 4 of the second embodiment.

[0022] Figure 10 : Figure 10(a) and (b) are cross-sectional views illustrating vehicle window structures according to Modifications 5 and 6 of the second embodiment. DETAILED DESCRIPTION

[0023] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In each of the drawings, identical components are denoted by the same reference numerals, and duplicate descriptions may be omitted. Furthermore, in each of the drawings, sizes and shapes may be partially exaggerated to facilitate understanding of the embodiments of the present invention.

[0024] Vehicles are typically automobiles and include trains, ships, airplanes, and other vehicles having laminated glass or single-pane glass. Hereinafter, a vehicle window structure having laminated glass will be described as an example, but a vehicle window structure may also have a single-pane glass panel.

[0025] The term "planar view" refers to a predetermined region of the laminated glass viewed from the direction normal to the vehicle interior side surface of the laminated glass. The term "planar shape" refers to the shape of the predetermined region of the laminated glass viewed from the direction normal to the vehicle interior side surface of the laminated glass.

[0026] Figure 1 (a) and (b) are diagrams illustrating a vehicle window structure according to a first embodiment of the present invention. Figure 1 (a) Schematically shows a state of looking outside the vehicle cabin from inside the vehicle cabin after the vehicle window structure is installed in the vehicle. Figure 1 (b) is along Figure 1 (a) is a partially enlarged cross-sectional view of line AA. Figure 1 In (a), the Figure 1 (b) shows a diagram of a seal rubber 31 or a polyurethane adhesive 32.

[0027] like Figure 1 As shown in Figures (a) and (b), a vehicle window structure 1 according to the first embodiment includes a laminated glass 10 and a light-emitting device 20. The laminated glass 10 is secured to a vehicle body flange 33 by a rubber sealant 31 and a polyurethane adhesive 32 provided around the periphery of the inner side of the laminated glass 10. The vehicle body flange 33 protrudes inward from the outer periphery of a generally rectangular opening in the vehicle body. Reference numeral 34 denotes the vehicle interior trim material.

[0028] In the following description, reference numeral 101 refers to the upper edge of the laminated glass 10, reference numeral 102 refers to the lower edge, reference numeral 103 refers to the left edge, and reference numeral 104 refers to the right edge. When the laminated glass 10 is installed in a right-hand drive vehicle and viewed from the inside of the vehicle, the upper edge refers to the roof edge of the vehicle, the lower edge refers to the engine compartment edge, the left edge refers to the passenger seat edge, and the right edge refers to the driver seat edge.

[0029] The laminated glass 10 of the first embodiment is a laminated glass for a vehicle, comprising a glass sheet 11, a glass sheet 12, an interlayer 13, and a shielding layer 14. The laminated glass 10 of the first embodiment can be applied to fixed windows such as front windows, rear windows, rear quarter windows, roofs, and additional windows of a vehicle. The laminated glass 10 of the first embodiment is also applicable to fixed windows that do not slide vertically, including side windows.

[0030] The laminated glass 10 may be flat or may have a multi-curved shape that curves in both the longitudinal and transverse directions. Alternatively, the laminated glass 10 may have a single curve that curves only in the longitudinal direction or only in the transverse direction. When the laminated glass 10 is curved, it is preferably curved so as to convexly face the vehicle exterior.

[0031] The glass plate 11 is a vehicle interior glass plate that becomes the vehicle interior side when the laminated glass 10 is installed in the vehicle, and the glass plate 12 is a vehicle exterior glass plate that becomes the vehicle exterior side when the laminated glass 10 is installed in the vehicle.

[0032] When the laminated glass 10 is curved, the radius of curvature of the laminated glass 10 is preferably not less than 1000 mm and not more than 100,000 mm. The radii of curvature of the glass sheet 11 and the glass sheet 12 may be the same or different. When the radii of curvature of the glass sheet 11 and the glass sheet 12 are different, the radius of curvature of the glass sheet 11 is larger than that of the glass sheet 12.

[0033] Glass sheets 11 and 12 are a pair of glass sheets facing each other. Intermediate film 13 is located between the pair of glass sheets. Glass sheets 11 and 12 are fixed with intermediate film 13 sandwiched therebetween. When the vehicle window structure includes single-pane glass, the single-pane glass may be either glass sheet 11 or glass sheet 12, and intermediate film 13 may not be provided.

[0034] The interlayer film 13 is a film that joins the glass sheets 11 and 12. The outer periphery of the interlayer film 13 is preferably edge-treated. Specifically, the ends (edges) of the interlayer film 13 are preferably treated so as not to significantly protrude from the ends (edges) of the glass sheets 11 and 12. To maintain the appearance, the amount of protrusion of the ends of the interlayer film 13 from the ends of the glass sheets 11 and 12 is preferably 150 μm or less. Details of the glass sheets 11, 12, and the interlayer film 13 will be described later.

[0035] The shielding layer 14 is an opaque layer, and can be provided, for example, in a strip along the periphery of the inner side of the laminated glass 10 (the upper edge 101, the lower edge 102, the left edge 103, and the right edge 104). The shielding layer 14 can be, for example, an opaque (e.g., black) colored ceramic layer. The shielding layer 14 can also be a light-shielding colored interlayer film, or a combination of a colored interlayer film and a colored ceramic layer. The colored film can be integrated with, for example, an infrared reflective film.

[0036] The laminated glass 10 having the opaque shielding layer 14 can suppress ultraviolet degradation of the polyurethane adhesive 32 and other materials that secure the periphery of the laminated glass 10 to the vehicle body. Furthermore, the busbars and electrodes electrically connected to the light-emitting device 20 can be concealed, making them difficult to see from the outside and / or inside of the vehicle.

[0037] The shielding layer 14 can be formed, for example, by applying a ceramic color paste containing a fusible glass frit containing a black pigment to a glass plate by screen printing or the like and then firing the paste, but the present invention is not limited thereto. The shielding layer 14 can also be formed, for example, by applying an organic ink containing a black or dark pigment to a glass plate by screen printing or the like and then drying the ink.

[0038] Figure 1 In the examples (a) and (b), the shielding layer 14 is provided only on the periphery of the inner side of the glass plate 11. However, the shielding layer 14 may be provided only on the periphery of the inner side of the glass plate 12, or may be provided on both the periphery of the inner side of the glass plate 11 and the periphery of the inner side of the glass plate 12.

[0039] A rubber sealant 31 is placed between the shielding layer 14 of the laminated glass 10 and the vehicle's body flange 33. The laminated glass 10 and the vehicle's body flange 33 are bonded together by a polyurethane adhesive 32 positioned closer to the periphery of the laminated glass 10 than the rubber sealant 31. This secures the periphery of the laminated glass 10 to the vehicle body. To enhance the appearance from the interior of the vehicle, a vehicle interior material 34 is provided to cover the periphery of the laminated glass 10, the rubber sealant 31, the polyurethane adhesive 32, and the vehicle body flange 33. Consequently, a space S is formed between the interior side of the laminated glass 10, the polyurethane adhesive 32, and the interior material 34.

[0040] In a narrow sense, space S is the space enclosed by the laminated glass 10, the polyurethane adhesive 32, the body flange 33, and the interior material 34. If a gap exists between the body flange 33 and the interior material 34, the body flange 33 can be imaginarily extended toward the interior material 34. Similarly, if a gap exists between the laminated glass 10 and the interior material 34, the interior material 34 can be imaginarily extended toward the laminated glass 10 to define the narrow space S.

[0041] The rubber seal 31 is a spacer that defines the gap between the laminated glass 10 and the vehicle body flange 33. It also acts as a barrier to prevent the uncured polyurethane adhesive 32 from flowing out. The material of the rubber seal 31 is, for example, polyethylene or ethylene propylene diene rubber. While the rubber seal 31 is disposed within the space S, its placement is not mandatory and may be used as needed.

[0042] The light-emitting device 20 emits light into the vehicle interior and comprises multiple light-emitting elements 21 and a light-guiding material 22. The light-emitting device 20 emits light from one or more of the light-emitting elements 21, which is then guided by the light-guiding material 22 to provide notifications or warnings, for example. For example, if the vehicle approaches a preceding vehicle, a predetermined number of light-emitting elements 21 can be illuminated or flashed to warn the driver of the danger. The light-emitting device 20 can also be used as an interior light or an ultraviolet sterilization lamp.

[0043] The light-emitting elements 21 may be disposed at any one or more of the upper edge 101, lower edge 102, left edge 103, and right edge 104 of the laminated glass 10. However, in this embodiment, as an example, the light-emitting elements 21 are disposed in a row at predetermined intervals along the lower edge 102, left edge 103, and right edge 104. However, if the light-emitting elements 21 can be disposed at the upper edge 101 without disposing other components such as a camera, the light-emitting elements 21 may be disposed at the upper edge 101 as needed.

[0044] At least a portion 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 portion of the light-guiding material 22 are disposed in the space S. When the laminated glass 10 is viewed from above, it is preferable that the light-emitting element 21 be disposed at a position overlapping with the shielding layer 14 in order to provide shielding from the outside.

[0045] The light-emitting element 21 is mounted on a substrate, for example, which is fixed to the shielding layer 14 by adhesive 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 adhesive or the like without using a substrate. The color emitted by the light-emitting element 21 is not particularly limited and may be, for example, red, green, blue, yellow, or white. The light-emitting device 20 may also include multiple light-emitting elements 21 emitting different colors.

[0046] The light-emitting element 21 is, for example, an LED (Light Emitting Diode). Alternatively, the light-emitting element 21 may be an organic EL (Organic Electro-Luminescence), an inorganic EL (Inorganic Electro-Luminescence), or the like. The term "LED" herein also includes micro-LEDs. Furthermore, the light-emitting element 21 may be a hot cathode fluorescent lamp (HCFL), a cold cathode fluorescent lamp (CCFL), or an incandescent bulb.

[0047] The shape of the light emitting element 21 is not particularly limited, and can be, for example, a rectangular parallelepiped. Examples of dimensions of the light emitting element 21 include 1.0 mm long, 0.5 mm wide, and 0.2 mm high, 1.6 mm long, 0.8 mm wide, and 0.3 mm high, or 3.2 mm long, 2.0 mm wide, and 1.0 mm high.

[0048] When the light-emitting element 21 is an LED, the shape of the light-emitting element 21 is, for example, 0.1 mm to 3.2 mm in length, 0.1 mm to 2.0 mm in width, and 0.1 mm to 1.0 mm in height. When the light-emitting element 21 is a micro-LED, the shape of the light-emitting element 21 is 100 μm or less in length and width, preferably 50 μm or less, and more preferably 20 μm or less. The lower limits of the length and width of the micro-LED are preferably both 3 μm or more, depending on various manufacturing conditions, especially to reduce edge effects. The height of the micro-LED is 10 μm to 50 μm.

[0049] Alternatively, a structure in which a plurality of light emitting elements 21 are arranged in advance at predetermined intervals and formed into a strip shape as a whole (for example, a strip LED or a line LED) may be employed.

[0050] The light guide material 22 is disposed at each of the lower edge 102, left edge 103, and right edge 104, respectively, on the center side of the surface of the light-emitting element 21 on the interior side of the laminated glass 10, for example, in contact with the light-emitting element 21. The light guide material 22 guides and emits light emitted by the light-emitting element 21, thereby illuminating part or all of the lower edge 102, left edge 103, and right edge 104 of the laminated glass 10. The light guide material 22 may be, for example, a long, narrow sheet integrally formed with a plurality of light-emitting elements 21. Alternatively, the light guide material 22 may be directly printed on the laminated glass 10.

[0051] A portion of the light guide material 22 is disposed within the space S, while another portion extends outside of the space S. When viewing the laminated glass 10 from above, it is preferred that the light guide material 22 be disposed so as to overlap with the shielding layer 14, thereby concealing the light guide material from the outside. The end of the light guide material 22 located centrally on the surface of the laminated glass 10 facing the interior of the vehicle may extend to a position where it overlaps with the end of the shielding layer 14 facing the interior of the laminated glass 10 when viewed from above. The greater the area of ​​the light guide material 22 that extends from the space S toward the interior of the laminated glass 10, the easier it is to see the light emitted by the light-emitting element 21 from the interior of the vehicle.

[0052] As the light guide material 22, for example, an injection-molded light guide can be used. Injection-molded light guides are made by injection molding from a transparent resin material such as acrylic, polycarbonate, polyethylene terephthalate, or polyurethane. A suitable light-emitting method can be selected, such as a prism method, a blast method, or a dot method. Alternatively, a known optical fiber light guide or liquid light guide can be used as the light guide material 22.

[0053] Alternatively, instead of the light-guiding material 22, or in addition to the light-guiding material 22, a portion of a reflective material that reflects light emitted from the light-emitting element 21 and / or the light-guiding material 22, or a diffuser that diffuses light emitted from the light-emitting element 21 and / or the light-guiding material 22 may be arranged in the space S, or all of them may be arranged in the space S. That is, the light-emitting device 20 may include an optical component including at least one of the light-guiding material 22, the reflective material, and the diffuser in addition to the light-emitting element 21. The reflective material or the diffuser may be arranged on the side of the laminated glass 10, or on the surface of the sealing rubber 31 on the side of the light-emitting element 21, on the surface of the vehicle body flange 33 on the side of the light-emitting element 21, or on the surface of the interior material 34 on the side of the light-emitting element 21. Examples of the reflective material include components containing titanium oxide or zirconium oxide. The reflective material may be a white colored ceramic layer. Examples of the diffuser include components containing titanium oxide or coated mica particles, components with sandblasted surfaces, and components with a concave-convex lens structure.

[0054] The reflective material and / or diffuser can be made of a transparent material. When the reflective material and / or diffuser are arranged on the laminated glass 10 side, they do not necessarily overlap with the shielding layer 14 when viewed from above. For example, the reflective material and / or diffuser on the interior side of the laminated glass 10 can extend closer to the center than the shielding layer 14 when viewed from above. This ensures visibility through the vehicle window while also allowing light from the light-emitting element 21 to easily reach the interior of the vehicle.

[0055] As described above, 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 polyurethane adhesive 32, and the interior material 34. By effectively utilizing the space S, which has not been actively utilized in the past, the light-emitting device 20 can be disposed in a position that is difficult to be seen from both the inside and outside of the vehicle.

[0056] In addition, in the conventional form of sealing the light-emitting device within the interlayer film of the laminated glass, if, for example, cracks appear on the glass sheets during the manufacturing process of the laminated glass, or if the light-emitting device malfunctions, the laminated glass will be unusable as a whole. In contrast, by arranging the light-emitting device 20 on the outside of the laminated glass 10 (on the side of the glass sheets 11 and 12 opposite the interlayer film 13) as in the present embodiment, if, for example, the light-emitting device malfunctions, only the light-emitting device needs to be replaced, thereby improving production efficiency and helping to reduce production costs. Moreover, the same applies after the product is launched on the market. For example, after the laminated glass is installed on a vehicle, if the laminated glass is damaged by flying stones, etc., only the laminated glass needs to be replaced. In the event of a malfunction of the light-emitting device, only the light-emitting device needs to be easily replaced, resulting in excellent maintainability.

[0057] Next, the glass plate 11 , the glass plate 12 , and the interlayer film 13 will be described in detail.

[0058] [glass plate]

[0059] The glass sheets 11 and 12 can be either inorganic glass or organic glass. Inorganic glass, for example, soda-lime glass, aluminosilicate glass, borosilicate glass, alkali-free glass, and quartz glass can be used without particular limitation. The glass sheet 12 located on the vehicle exterior side of the laminated glass 10 is preferably inorganic glass for scratch resistance, and soda-lime glass for formability. When the glass sheets 11 and 12 are soda-lime glass, clear glass, green glass containing a predetermined amount of iron or higher, and UV-cut green glass are preferably used.

[0060] Inorganic glass can be either untempered glass or tempered glass. Untempered glass is formed by shaping molten glass into a sheet and then annealing it. Tempered glass is formed by forming a compressive stress layer on the surface of untempered glass.

[0061] Tempered glass may be, for example, physically tempered glass, such as air-cooled tempered glass, or chemically tempered glass. In the case of physically tempered glass, for example, a non-annealing operation, such as rapidly cooling a uniformly heated glass sheet from a temperature near its softening point during bending, creates a compressive stress layer on the glass surface due to the temperature difference between the glass surface and the interior, thereby strengthening the glass surface.

[0062] When the tempered glass is chemically tempered, compressive stress can be generated on the glass surface by, for example, ion exchange after bending, thereby strengthening the glass surface. Inorganic glass that absorbs ultraviolet or infrared rays can also be used. While the inorganic glass is preferably transparent, it may also be tinted to a degree that does not impair transparency.

[0063] On the other hand, examples of materials for organic glass include polycarbonate, acrylic resins such as polymethyl methacrylate, and transparent resins such as polyvinyl chloride and polystyrene.

[0064] While the glass plates 11 and 12 are described collectively as glass plates, 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 also be a combination of various glass plates other than those illustrated.

[0065] The shapes of the glass sheets 11 and 12 are not particularly limited to rectangles and may be various shapes or shapes processed to have curvatures. The glass sheets 11 and 12 may be bent by gravity forming, press forming, roll forming, or the like. The forming method for the glass sheets 11 and 12 is also not particularly limited. For example, in the case of inorganic glass, glass sheets formed by a float process or the like are preferably used.

[0066] The thickness of the glass sheet 12 at its thinnest portion is preferably 1.1 mm to 3 mm. A thickness of 1.1 mm or greater provides sufficient strength, such as stone-flying resistance, while a thickness of 3 mm or less prevents excessive weight increase in the laminated glass 10, which is preferable from the perspective of vehicle fuel efficiency. The thickness of the glass sheet 12 at its thinnest portion is more preferably 1.8 mm to 2.8 mm, more preferably 1.8 mm to 2.6 mm, even more preferably 1.8 mm to 2.2 mm, and even more preferably 1.8 mm to 2.0 mm.

[0067] 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 handling is good, and when the thickness is 2.3 mm or less, the weight does not become too large.

[0068] 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 inappropriate, if the glass sheets 11 and 12 are formed into two sheets of glass with a particularly deep curve, the shapes of the two sheets of glass may not match, significantly affecting the glass quality, such as residual stress after press-bonding.

[0069] However, if the thickness of the glass sheet 11 is between 0.3 mm and 2.3 mm, sufficient glass quality, such as residual stress, can be maintained. A thickness of the glass sheet 11 between 0.3 mm and 2.3 mm is particularly effective in maintaining the glass quality of deeply bent glass. The thickness of the glass sheet 11 is more preferably between 0.5 mm and 2.1 mm, and even more preferably between 0.7 mm and 1.9 mm. Within this range, the aforementioned effects are more pronounced.

[0070] When the laminated glass 10 is used, for example, in a head-up display, the thickness of the glass sheets 11 and / or 12 is not fixed, but can vary depending on the location as needed. For example, when the laminated glass 10 is a windshield, one or both of the glass sheets 11 and 12 can have a wedge-shaped cross-section, where the thickness increases from the bottom edge toward the top 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 combined wedge angle of the glass sheets 11 and 12 can vary within a range of, for example, greater than 0 mrad and less than or equal to 1.0 mrad.

[0071] A film having waterproofing, ultraviolet or infrared blocking properties, or a film having low reflection or low emissivity properties may be provided on the side of the glass plate 11 and / or 12 opposite to the side in contact with the interlayer film 13. Furthermore, a film having ultraviolet or infrared blocking properties, low emissivity properties, visible light absorption, or coloring properties may also be provided on the side of the glass plate 11 and / or 12 in contact with the interlayer film 13.

[0072] When the glass sheets 11 and 12 are inorganic glass sheets with curved shapes, they are bent after being formed by a float process and before being bonded together using the interlayer film 13. Bending is performed by heating the glass to soften it. The heating temperature of the glass during bending is approximately 550°C to 700°C.

[0073] [Intermediate film]

[0074] The interlayer film 13 is often made of a thermoplastic resin. Examples of thermoplastic resins conventionally used for such applications include 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, and ionomer resins. Resin compositions containing hydrogenated modified block copolymers as described in Japanese Patent No. 6065221 can also be preferably used.

[0075] Among these, plasticized polyvinyl acetal resins are preferred due to their excellent balance of properties, including transparency, weather resistance, strength, adhesion, penetration resistance, impact energy absorption, moisture resistance, heat insulation, and sound insulation. These thermoplastic resins can be used alone or in combination of two or more. The "plasticity" in these plasticized polyvinyl acetal resins refers to the ability to be plasticized by the addition of a plasticizer. The same applies to other plasticized resins.

[0076] However, when encapsulating a specific substance in the interlayer film 13, depending on the type of the encapsulated substance, the specific plasticizer may cause degradation. In such cases, it is preferable to use a resin that substantially does not contain the plasticizer. In other words, it is sometimes preferable that the interlayer film 13 does not contain a plasticizer. Examples of the plasticizer-free resin include ethylene-vinyl acetate copolymer resins.

[0077] Examples of the polyvinyl acetal resin include polyvinyl formal resins obtained by reacting polyvinyl alcohol (hereinafter sometimes referred to as "PVA") with formaldehyde, polyvinyl acetal resins in a narrow sense obtained by reacting PVA with acetaldehyde, and polyvinyl butyral resins obtained by reacting PVA with n-butyraldehyde (hereinafter sometimes referred to as "PVB"), among others. PVB is particularly preferred from the perspective of excellent balance among various properties such as transparency, weather resistance, strength, adhesion, 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.

[0078] However, the material forming the intermediate film 13 is not limited to thermoplastic resins. The intermediate film 13 may also contain functional particles such as infrared absorbers, ultraviolet absorbers, and luminescent agents. In addition, the intermediate film 13 may also have a colored portion called a light-shielding band (a region with the function of reducing visible light transmittance). The coloring pigment used to form the colored portion is not particularly limited as long as it can be used as a plastic and the visible light transmittance of the colored portion is 40% or less. Examples include organic coloring pigments such as azo, phthalocyanine, quinacridone, perylene, pyrenone, dioxazine, anthraquinone, and isoindolinone, and inorganic coloring pigments such as oxides, hydroxides, sulfides, chromic acid, sulfates, carbonates, silicates, phosphates, arsenates, ferrocyanide, carbon, and metal powder. These coloring pigments can be used alone or in combination of two or more. The amount of coloring pigment added can be arbitrarily set according to the target color tone as long as the visible light transmittance of the colored portion is 40% or less, and is not particularly limited.

[0079] The thickness of the interlayer film 13 at its thinnest portion is preferably 0.5 mm or greater. If the interlayer film 13 is composed of multiple layers, the thickness of the interlayer film 13 refers to the total thickness of each layer. If the thickness of the interlayer film 13 at its thinnest portion is 0.5 mm or greater, the impact resistance required for laminated glass is sufficient. Furthermore, the thickness of the interlayer film 13 at its thickest portion is preferably 3 mm or less. If the maximum thickness of the interlayer film 13 is 3 mm or less, the weight of the laminated glass will not be excessively increased. 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.

[0080] When the laminated glass 10 is used, for example, for a head-up display, the thickness of the interlayer film 13 is not fixed and can vary depending on the location as needed. For example, when the laminated glass 10 is a windshield, the interlayer film 13 can have a wedge-shaped cross-section, where the thickness increases from the bottom edge of the windshield toward the top edge when the windshield is installed in a vehicle. In this case, if the thickness of the glass sheets 11 and 12 is fixed, the wedge angle of the interlayer film 13 can vary, for example, within a range of greater than 0 mrad and less than or equal to 1.0 mrad.

[0081] The interlayer film 13 may also have three or more layers. For example, by forming the interlayer film from three or more layers and adjusting the shear modulus of any layer other than the two side layers to be lower than that of the two side layers by adjusting a plasticizer or the like, the sound insulation of the laminated glass 10 can be improved. In this case, the shear moduli of the two side layers may be the same or different.

[0082] When the interlayer film 13 is composed of multiple layers, each layer is preferably formed of the same material, but may be formed of different materials. However, from the perspective of adhesion to the glass sheets 11 and 12, or the functional materials incorporated into the laminated glass 10, it is preferred that at least 50% of the thickness of the interlayer film 13 be made of the above-mentioned materials.

[0083] To produce the interlayer film 13, for example, the aforementioned resin material to be used as the interlayer film is appropriately selected and extruded in a heated, molten state using an extruder. Extrusion conditions, such as the extrusion speed, are set to achieve uniformity. The extruded resin film is then curved on its upper and lower sides to match the design of the laminated glass and, for example, stretched as needed, to complete the interlayer film 13.

[0084] [Laminated glass]

[0085] The total thickness of the laminated glass 10 is preferably 2.8 mm or more and 10 mm or less. A total thickness of 2.8 mm or more ensures sufficient rigidity, while a total thickness of 10 mm or less provides sufficient transmittance and reduces haze.

[0086] The plate misalignment between the glass sheets 11 and 12 on at least one side of the laminated glass 10 is preferably 1.5 mm or less, more preferably 1 mm or less. Here, the plate misalignment between the glass sheets 11 and 12 refers to the amount of misalignment between the ends of the glass sheets 11 and 12 when viewed from above.

[0087] It is preferable that the misalignment between the glass sheets 11 and 12 on at least one side of the laminated glass 10 is 1.5 mm or less from the perspective of not impairing the appearance. It is more preferable that the misalignment between the glass sheets 11 and 12 on at least one side of the laminated glass 10 is 1.0 mm or less from the perspective of not impairing the appearance.

[0088] In the production of laminated glass 10, an interlayer film 13 is sandwiched between glass sheets 11 and 12 to form a laminate. This laminate is then placed in a rubber bag, a rubber chamber, a resin bag, or the like, and pressure-bonded at a temperature of approximately 70°C to 110°C in a vacuum at a gauge pressure of -65 kPa to -100 kPa. The heating conditions, temperature conditions, and lamination method can be appropriately selected.

[0089] Furthermore, by performing a heat-and-press bonding process at a temperature of 100°C to 150°C and a pressure of 0.6 MPa to 1.3 MPa, for example, a laminated glass 10 with even greater durability can be obtained. However, in some cases, such a heat-and-press bonding process may not be employed in consideration of process simplification or the properties of the material enclosed in the laminated glass 10.

[0090] That is, a method called "cold bending" can also be used, in which one or both of the glass sheets 11 or 12 are joined together in an elastically deformed state. Cold bending can be achieved by using a laminate consisting of the glass sheets 11 and 12 and the interlayer 13, which are temporarily fixed by means such as tape, and a conventionally known pre-pressing device such as a nip roller, a rubber bag, or a rubber chamber, and an autoclave.

[0091] Without prejudice to the effects of the present invention, films and devices having functions such as electric heating lines, infrared reflection, luminescence, power generation, dimming, touch screens, visible light reflection, scattering, decoration, and absorption may be placed between the glass sheets 11 and 12 in addition to the interlayer film 13, provided that they do not impair the effects of the present invention. Furthermore, films having functions such as anti-fog, water repellency, heat insulation, and low reflection may also be placed on the surface of the laminated glass 10. Furthermore, films having functions such as heat insulation and heating may also be placed on the exterior side of the glass sheet 11 or the interior side of the glass sheet 12.

[0092] <Modification of First Embodiment>

[0093] The modification of the first embodiment shows an example of a vehicle window structure in which the light emitting device is mounted in a manner different from that of the first embodiment. In the modification of the first embodiment, description of the same components as those of the already described embodiment may be omitted.

[0094] Figure 2 (a) is a cross-sectional view illustrating a vehicle window structure according to a first embodiment of the present invention (before a light emitting device is mounted), showing Figure 1 (b) Corresponding cross section. Figure 2 (b) is a cross-sectional view illustrating a vehicle window structure according to a first modification of the first embodiment (after the light emitting device is mounted), showing the Figure 1 (b) Corresponding cross section. Figure 2 (c) is a perspective view illustrating the vicinity of a light-emitting element of the light-emitting device.

[0095] like Figure 2 As shown in Figures (a) to 2(c), a vehicle window structure 1A according to Modification 1 includes a laminated glass 10 and a light-emitting device 20A. The light-emitting element 21 and light-guiding material 22 of the light-emitting device 20A are identical to those of the light-emitting device 20. However, the light-emitting device 20A 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 the light-guiding material 22. The number of mounting terminals 211 can be, for example, the same as the number of light-emitting elements 21, but this is not a limitation.

[0096] In addition, a bracket 31A is provided in place of the sealing rubber 31. The bracket 31A is connected to the laminated glass 10 and the vehicle body flange 33. The bracket 31A is a spacer that defines the distance between the laminated glass 10 and the vehicle body flange 33 and acts as a barrier to prevent the uncured polyurethane adhesive 32 from flowing out. The bracket 31A is provided with a concave mounting terminal 311. When the mounting terminal 211 of the light-emitting element 21 is inserted into the mounting terminal 311, the two engage, securing the light-emitting device 20A to the bracket 31A. This structure allows the light-emitting device 20A to be easily attached and detached to the bracket 31A. For example, if the light-emitting device 20A malfunctions, it can be easily replaced.

[0097] Alternatively, the mounting terminals 211 and 311 may be provided as a male connector and a female connector, and when the two are joined together, the light emitting device 20A is electrically connected to wiring provided in the bracket 31A.

[0098] Figure 3 (a) is a cross-sectional view illustrating a vehicle window structure according to a second modification of the first embodiment. Figure 1 (b) Corresponding cross section.

[0099] like Figure 3As shown in (a), the vehicle window structure 1B of modification example 2 has a laminated glass 10 and a light-emitting device 20B. The light-emitting device 20B has a light-emitting element 21 and a reflective material 24 mounted on a substrate 23. The substrate 23 is fixed to the side of the sealing rubber 31 facing the inside of the vehicle by bonding or the like. It is also possible to fix the light-emitting element 21 directly to the side of the sealing rubber 31 facing the inside of the vehicle without providing the substrate 23. Alternatively, a light-emitting portion formed by integrating the light-emitting element and the light-guiding material can be fixed to the side of the sealing rubber 31 facing the inside of the vehicle instead of the light-emitting element 21. The light emitted by the light-emitting element 21 is reflected by the reflective material 24 and can be seen from the inside of the vehicle. In addition, the same effect can be achieved by providing a diffusion material instead of the reflective material 24.

[0100] Figure 3 (b) is a cross-sectional view illustrating a vehicle window structure according to a third modification of the first embodiment. Figure 1 (b) Corresponding cross section. Figure 3 (c) is a perspective view illustrating the light-emitting element portion of the light-emitting device of Modification Example 3.

[0101] like Figure 3 (b) and Figure 3 As shown in (c), the vehicle window structure 1C of modification example 3 has a laminated glass 10 and a light-emitting device 20C. The light-emitting device 20C has a light-emitting element 21 and a reflective material 24. In the vehicle window structure 1C, a bracket 31C is provided instead of the sealing rubber 31, and the light-emitting element 21 is fixed in a light-emitting element mounting groove 313 provided on the bracket 31C. It is preferable that the light-emitting element 21 protrudes from the surface of the bracket 31C facing the inner side of the vehicle from the perspective of diffusing light. In addition, the light-emitting element part of the light-emitting portion formed by integrating the light-emitting element and the light-guiding material can be fixed in the light-emitting element mounting groove 313 provided on the bracket 31C instead of the light-emitting element 21. The light emitted by the light-emitting element 21 is reflected by the reflective material 24 and can be seen from the inner side of the vehicle. In addition, the same effect can be obtained by providing a diffusion material instead of the reflective material 24.

[0102] Figure 4 (a) is a cross-sectional view illustrating a vehicle window structure according to a fourth modification of the first embodiment. Figure 1 (b) Corresponding cross section.

[0103] like Figure 4As shown in (a), the vehicle window structure 1D of the modified example 4 has a laminated glass 10 and a light emitting device 20D. The light emitting device 20D has a light emitting element 21 and a reflective material 24 mounted on a substrate 23. Like the vehicle window structure 1D, a bracket 31D having an inclined surface facing the inner side of the laminated glass 10 can be provided instead of the sealing rubber 31, and the light emitting element 21 mounted on the substrate 23 can be fixed to the inclined surface of the bracket 31D by bonding or the like. Figure 4 In the example shown in (a), the bracket 31D has an inclined surface that is inclined at about 20° relative to the inner side of the laminated glass 10 with respect to the thickness direction of the laminated glass 10. Alternatively, the substrate 23 may be omitted and the light-emitting element 21 may be directly fixed on the inclined surface of the bracket 31D facing the inner side of the vehicle. Alternatively, a light-emitting portion formed by integrating the light-emitting element and the light-guiding material may be fixed on the inclined surface of the bracket 31D facing the inner side of the vehicle instead of the light-emitting element 21. The light emitted by the light-emitting element 21 is reflected by the reflective material 24 and can be seen from the inner side of the vehicle. By adjusting the angle of the inclined surface, the light emitted by the light-emitting element 21 can be efficiently reflected to the inner side of the vehicle. Alternatively, the same effect can be achieved by providing a diffusion material instead of the reflective material 24.

[0104] Figure 4 (b) is a cross-sectional view illustrating a vehicle window structure according to a fifth modification of the first embodiment. Figure 1 (b) Corresponding cross section.

[0105] like Figure 4 As shown in (b), the vehicle window structure 1E of the modified example 5 has a laminated glass 10 and a light-emitting device 20E. The light-emitting device 20E has a light-emitting element 21 mounted on a substrate 23. As in the vehicle window structure 1E, a bracket 31E having an inclined surface toward the interior material 34 can be provided instead of the sealing rubber 31, and the light-emitting element 21 mounted on the substrate 23 can be fixed to the inclined surface of the bracket 31E by bonding or the like. Figure 4 In the example shown in (b), the bracket 31E has an inclined surface that is inclined at approximately 50° toward the interior of the vehicle with respect to the thickness direction of the laminated glass 10. Alternatively, the substrate 23 may be omitted and the light-emitting element 21 may be directly fixed to the inclined surface of the bracket 31E facing the interior material 34. Alternatively, a light-emitting portion formed by integrating a light-emitting element and a light-guiding material may be fixed to the inclined surface of the bracket 31E facing the interior material 34 instead of the light-emitting element 21. The light emitted from the light-emitting element 21 passes through the transmission area 341 provided on the interior material 34 and can be seen from the interior of the vehicle. A light-guiding or diffusion function may also be added to the transmission area 341 to provide directivity.

[0106] As described above, the inclined surface is inclined at a predetermined angle toward the vehicle interior side of the laminated glass 10 or the interior material 34 side, with the thickness direction of the laminated glass 10 being 0°. The inclination angle can be appropriately adjusted within a range of 5° to 85°. The inclination angle can be 10° or more, 20° or more, 30° or more, or 45° or more. The inclination angle can be 80° or less, 70° or less, 60° or less, 50° or less, or 45° or less.

[0107] Figure 5 (a) is a cross-sectional view illustrating a vehicle window structure according to a sixth modification of the first embodiment. Figure 1 (b) Corresponding cross section.

[0108] like Figure 5 As shown in (a), the vehicle window structure 1F of modification example 6 has a laminated glass 10 and a light-emitting device 20F. The light-emitting device 20F has a light-emitting element 21 and a reflective material 24 mounted on a substrate 23. Like the vehicle window structure 1F, the light-emitting element 21 mounted on the substrate 23 can be fixed to the surface of the interior material 34 facing the sealing rubber 31 by bonding or the like. Alternatively, the substrate 23 may not be provided and the light-emitting element 21 may be directly fixed to the surface of the interior material 34 facing the sealing rubber 31. Alternatively, a light-emitting portion formed by integrating a light-emitting element and a light-guiding material may be fixed to the surface of the interior material 34 facing the sealing rubber 31 instead of the light-emitting element 21. The light emitted by the light-emitting element 21 is reflected by the reflective material 24 provided on the surface of the sealing rubber 31 facing the interior of the vehicle and can be seen from the interior of the vehicle. Alternatively, the same effect can be achieved by providing a diffusion material instead of the reflective material 24.

[0109] Figure 5 (b) is a cross-sectional view illustrating a vehicle window structure according to a seventh modification of the first embodiment. Figure 1 (b) Corresponding cross section.

[0110] like Figure 5 As shown in (b), the vehicle window structure 1G of modification 7 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 substrate 23 and a reflective material 24G. In the vehicle window structure 1G, the bottom side of the sealing rubber 31G extends along the shielding layer 14 to the interior material 34 side, and an L-shaped reflective material 24G is provided on the bottom side of the sealing rubber 31G, that is, the extended portion on the laminated glass 10 side, and the side surface of the sealing rubber 31G on the vehicle interior side. The light emitted from the light-emitting element 21 is reflected by the L-shaped reflective material 24G and can be seen from the vehicle interior side through the transmission area 341 provided on the interior material 34. A light-guiding or diffusion function may be added to the transmission area 341 to provide directivity.

[0111] Figure 6 (a) is a cross-sectional view illustrating a vehicle window structure according to a modification 8 of the first embodiment. Figure 1 (b) Corresponding cross section.

[0112] like Figure 6 As shown in (a), the vehicle window structure 1H of modification example 8 has a laminated glass 10 and a light-emitting device 20H. The light-emitting device 20H has a light-emitting element 21 and a reflective material 24 mounted on a substrate 23. Like the vehicle window structure 1H, the light-emitting element 21 mounted on the substrate 23 can be fixed to the surface of the vehicle body flange 33 facing the laminated glass 10 by bonding or the like. Alternatively, the substrate 23 may not be provided and the light-emitting element 21 may be directly fixed to the surface of the vehicle body flange 33 facing the laminated glass 10. Alternatively, a light-emitting portion formed by integrating a light-emitting element and a light-guiding material may be fixed to the surface of the vehicle body flange 33 facing the laminated glass 10 instead of the light-emitting element 21. The light emitted by the light-emitting element 21 is reflected by the reflective material 24 provided on the shielding layer 14 exposed further to the vehicle interior than the sealing rubber 31 and can be seen from the vehicle interior. Alternatively, the same effect can be achieved by providing a diffusion material instead of the reflective material 24.

[0113] Figure 6 (b) is a cross-sectional view illustrating a vehicle window structure according to a ninth modification of the first embodiment. Figure 1 (b) Corresponding cross section.

[0114] like Figure 6 As shown in (b), the vehicle window structure 1I of modification 9 has a laminated glass 10 and a light-emitting device 20I. The light-emitting device 20I has a light-emitting element 21 mounted on a substrate 23. Like the vehicle window structure 1I, the light-emitting element 21 mounted on the substrate 23 can be fixed to the surface of the vehicle body flange 33 facing the side opposite to the laminated glass 10 by bonding or the like. Alternatively, the substrate 23 may not be provided and the light-emitting element 21 may be directly fixed to the surface of the vehicle body flange 33 facing the side opposite to the laminated glass 10. Alternatively, a light-emitting portion formed by integrating a light-emitting element and a light-guiding material may be fixed to the surface of the vehicle body flange 33 facing the side opposite to the laminated glass 10 instead of the light-emitting element 21. The light emitted from the light-emitting element 21 can be seen from the inside of the vehicle by passing through a transmission area 341 provided on the interior material 34. A light-guiding or diffusion function may also be added to the transmission area 341 to provide directivity.

[0115] <Second embodiment>

[0116] In the second embodiment of the present invention, an example of a vehicle window structure is shown in which the mounting position of the light emitting element is different from that of the first embodiment. In the second embodiment, descriptions of the same components as those in the previously described embodiments may be omitted.

[0117] Figure 7 (a) and (b) are diagrams illustrating a vehicle window structure according to a second embodiment. Figure 7 (a) schematically shows a state viewed from inside the vehicle cabin, after the vehicle window structure is mounted on the vehicle. Figure 7 (b) is along Figure 7 (a) is a partially enlarged cross-sectional view of line BB. Figure 7 In (a), the Figure 7 (b) is a diagram showing a seal rubber 31 or a polyurethane adhesive 32, etc.

[0118] Figure 7 The vehicle window structure 2 of the second embodiment shown in (a) and (b) includes a light-emitting device 20J having light-emitting elements 21 and a light-guiding material 22. The light-emitting elements 21 are arranged near the ends and near the center of each of the lower edge 102, the left edge 103, and the right edge 104. However, if the light-emitting elements 21 can be arranged at the upper edge 101 without arranging other components such as a camera, the light-emitting elements 21 may be arranged at the upper edge 101 as needed. Furthermore, if the light-emitting elements 21 and the light-guiding material 22 are alternately arranged along a predetermined edge of the laminated glass 10, the light-emitting elements 21 do not need to be arranged near the ends and near the center of the predetermined edge.

[0119] The light-guiding material 22 is disposed in the space S, and guides the light emitted by the light-emitting element 21 from its end, thereby illuminating a portion or all of the lower edge 102, the left edge 103, and the right edge 104 of the laminated glass 10. The light-emitting element 21 may also be disposed in the space S. Examples of the light-guiding material 22 include a known light-guiding rod (a rod having a core layer and a cladding layer with a predetermined refractive index difference), glass fiber, and a liquid light guide that uses a translucent liquid core to guide light.

[0120] In this manner, by alternately arranging the light-emitting elements 21 and the light-guiding materials 22 along a predetermined edge of the laminated glass 10, and allowing the light-guiding materials 22 to guide light while emitting light emitted by the light-emitting elements 21, a relatively small number of light-emitting elements 21 can be used to illuminate a portion or all of the predetermined edge of the laminated glass 10. This allows for a low-cost vehicle window structure to be realized.

[0121] Furthermore, in the vehicle window structure 2, similar to the vehicle window structure 1 and other embodiments, at least a portion of the light-emitting device 20J is positioned within the space S formed between the glass sheet 11, the rubber sealant 31, and the interior trim material 34. By effectively utilizing the previously underutilized space S, the light-emitting device 20J can be positioned in a location that is less visible from the vehicle interior. This differs from conventional methods of encapsulating the light-emitting device within the interlayer film of laminated glass, thus contributing to reduced production costs and excellent post-market maintenance, similar to the vehicle window structure 1 and other embodiments.

[0122] <Modification of Second Embodiment>

[0123] The modification of the second embodiment shows an example of a vehicle window structure in which the light emitting device is mounted in a manner different from that of the second embodiment. In the modification of the second embodiment, descriptions of components identical to those of the previously described embodiment may be omitted.

[0124] Figure 8 (a) is a cross-sectional view illustrating a vehicle window structure according to a first modification of the second embodiment. Figure 7 (b) Corresponding cross section.

[0125] exist Figure 8 In the vehicle window structure 2A of the modified example 1 of the second embodiment shown in (a), a light-guiding material 22A is arranged between the laminated glass 10 and the vehicle body flange 33 instead of the sealing rubber 31. The light-guiding material 22A has the same function as the light-guiding material 22. The light-guiding material 22A is also a spacer that defines the interval between the laminated glass 10 and the vehicle body flange 33, and acts as a dam to prevent the polyurethane adhesive 32 from flowing out before curing. That is, the light-guiding material 22A also serves as a spacer that defines the interval between the laminated glass 10 and the vehicle body flange 33. In this way, a light-guiding material 22A having the same height as the sealing rubber 31 can be arranged instead of the sealing rubber 31.

[0126] Figure 8 (b) is a cross-sectional view illustrating a vehicle window structure according to a second modification of the second embodiment. Figure 7 (b) Corresponding cross section.

[0127] picture Figure 8 As shown in FIG. 2( b ), in a vehicle window structure 2B according to a second modification of the second embodiment, a bracket 31K is provided in place of the seal rubber 31, and the light guide material 22 is fixed to a light guide material mounting groove 315 provided in the bracket 31K. It is preferable for the light guide material 22 to protrude from the surface of the bracket 31K facing the vehicle interior in order to diffuse light.

[0128] Figure 9(a) is a cross-sectional view illustrating a vehicle window structure according to a third modification of the second embodiment. Figure 7 (b) Corresponding cross section.

[0129] Can be like Figure 9 As in the vehicle window structure 2C of the third variant of the second embodiment shown in FIG. (a), a light guide material 22 is fixed to the surface of the interior material 34 facing the rubber seal 31 by adhesive or the like. Light emitted by the light guide material 22 while guiding light is reflected by the reflective material 24 provided on the surface of the rubber seal 31 facing the vehicle interior, allowing it to be seen from the vehicle interior. Alternatively, a diffuser material may be provided in place of the reflective material 24 to achieve the same effect.

[0130] Figure 9 (b) is a cross-sectional view illustrating a vehicle window structure according to a fourth modification of the second embodiment. Figure 7 (b) The corresponding cross section. Figure 9 As in the vehicle window structure 2D of the fourth modification of the second embodiment shown in (b), when the light guide material 22 is arranged at the end of the interior material 34 on the laminated glass 10 side, the same function is achieved. Figure 9 The same effect as in case (a).

[0131] Figure 10 (a) is a cross-sectional view illustrating a vehicle window structure according to a fifth modification of the second embodiment. Figure 7 (b) The corresponding cross section. Figure 10 As in the vehicle window structure 2E of the fifth modification of the second embodiment shown in (a), a fiber light guide 28 is provided on the shielding layer 14 and an optical fiber 29 serving as a light guide material is held on the fiber light guide 28 .

[0132] Figure 10 (b) is a cross-sectional view illustrating a vehicle window structure according to a sixth modification of the second embodiment. Figure 7 (b) The corresponding cross section. Figure 10 As in the vehicle window structure 2F of the modified example 6 of the second embodiment shown in (b), no sealing rubber is provided, but the polyurethane adhesive 32 has the function of a spacer. Figure 10 The structure of (b) may be any structure as long as the light emitting element or the light guide material is not fixed to the sealing rubber or a holder replacing the sealing rubber, and other structures shown in the first and second embodiments may also be applied.

[0133] Although preferred embodiments have been described in detail above, the present invention is not limited to the above-described embodiments and can be variously modified and replaced without departing from the scope of the claims.

[0134] The entire contents of the specification, claims, drawings, and abstract of Japanese Patent Application No. 2020-095772 filed on June 1, 2020 are cited herein and are incorporated herein by reference as a disclosure of the specification of the present invention.

[0135] Explanation of symbols

[0136] 1. 1A~1I, 2. 2A~2D vehicle window structures

[0137] 10Laminated glass

[0138] 101 upper edge

[0139] 102 lower edge

[0140] 103 left edge

[0141] 104 right edge

[0142] 11, 12 glass plates

[0143] 13 Intermediate film

[0144] 14 shielding layers

[0145] 20, 20A, 20B, 20J light-emitting devices

[0146] 21 light-emitting elements

[0147] 22, 22A light guide material

[0148] 23 base material

[0149] 24 reflective materials

[0150] 28 fiber optic guides

[0151] 29 optical fibers

[0152] 31 sealing rubber

[0153] 31A, 31C, 31D, 31E, 31K brackets

[0154] 32 polyurethane adhesive

[0155] 33 Body flange

[0156] 34 Interior materials

[0157] 211, 311 installation terminals

[0158] 313 light emitting element mounting slot

[0159] 315 light guide material installation groove

[0160] 341 transmission area

Claims

1. A vehicle window structure, which is provided at an opening of a vehicle. The vehicle window structure includes a first glass plate and a light emitting device. At least a portion of the light emitting device is disposed in a space formed between the first glass plate, an adhesive bonding the first glass plate to the vehicle body flange, and an interior material of the vehicle. The vehicle body flange has a region extending in a direction opposite to the end of the first glass plate relative to a position in contact with the adhesive and facing the first glass plate. The interior material has a region facing the first glass plate across the vehicle body flange.

2. The vehicle window structure according to claim 1, wherein: The light-emitting device includes a light-emitting element and an optical component. The optical member includes 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 component are fixed to the first glass plate.

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

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

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

7. The vehicle window structure according to any one of claims 4 to 6, wherein: The spacer has an inclined surface with an inclination angle of 5° or more and 85° or less with respect to the 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 are fixed to the interior material.

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

10. The vehicle window structure according to claim 2 or 3, wherein: Light emitted from the light emitting element and / or the optical member passes through the transparent region provided on the interior material and reaches the vehicle interior.

11. The vehicle window structure according to claim 2 or 3, 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 vehicle window structure according to claim 2 or 3, wherein: The optical member is the reflective material and / or the diffusing material, The reflective material and / or the diffusing material are formed of a transparent material and are arranged on the surface of the first glass plate on the vehicle interior side. When the first glass plate is viewed from above, the reflective material and / or the diffusing material extend to a position closer to the center than the shielding layer formed on the peripheral portion of the vehicle interior side surface of the first glass plate.

14. The vehicle window structure according to claim 2 or 3, wherein: The light emitting element and / or the optical member are arranged at a position overlapping with a shielding layer formed on a peripheral edge portion of the vehicle interior side surface of the first glass sheet in a plan view of the first glass sheet.

15. The vehicle window structure according to claim 2 or 3, wherein: The light emitting elements are arranged in a row along a predetermined edge of the first glass plate.

16. The vehicle window structure according to claim 2 or 3, 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 or 2, wherein: The vehicle further includes a second glass sheet located closer to the vehicle exterior than the first glass sheet, and an intermediate film is provided between the first glass sheet and the second glass sheet.

Images