CN114423604A

CN114423604A - Laminated glass

Info

Publication number: CN114423604A
Application number: CN202080065841.4A
Authority: CN
Inventors: 高桥阳; 松岛孝典; 木村壮志
Original assignee: Asahi Glass Co Ltd
Current assignee: AGC Inc
Priority date: 2019-10-03
Filing date: 2020-09-23
Publication date: 2022-04-29
Also published as: DE112020004771T5; JP2022169820A; WO2021065616A1

Abstract

The laminated glass for a vehicle is provided with an inner glass plate for a vehicle, an outer glass plate for a vehicle, an intermediate film for joining the inner glass plate and the outer glass plate, and a light-emitting device sealed in the intermediate film, wherein the light-emitting device is a device for emitting light to the inside of the vehicle through the inner glass plate, the intermediate film is provided with a 1 st intermediate film joined to the inner glass plate for a vehicle and a 2 nd intermediate film joined to the outer glass plate, and the total visible light transmittance of members located on the inner side of the vehicle than the light-emitting device is 50% or less.

Description

Laminated glass

Technical Field

The present invention relates to laminated glass.

Background

Conventionally, laminated glasses in which light emitting devices having light emitting elements are sealed have been used in the field of building materials. In addition, a technique of using a light emitting device in which a light emitting element is enclosed as a window glass has been studied.

For example, there is a technology of sealing 1 group of light emitting diodes arranged on a support of transparent glass in an automotive sunroof as a laminated glass and using the sealed light emitting diodes as a lighting device (for example, see patent document 1).

Documents of the prior art

Patent document 1: japanese patent No. 6360828

Disclosure of Invention

Technical problem to be solved by the invention

If the light emitting element is sealed in the laminated glass for a vehicle, there is a problem that wiring connected to the light emitting element is not aesthetically pleasing because the wiring is visible from the inside of the vehicle when the light emitting element is not emitting light.

The present invention has been made in view of the above problems, and an object thereof is to make it difficult for wiring connected to a light emitting element to be recognized from the inside of a vehicle in a laminated glass in which a light emitting device is sealed.

Technical scheme for solving technical problem

The laminated glass for a vehicle comprises an interior glass plate, an exterior glass plate, an intermediate film for joining the interior glass plate and the exterior glass plate, and a light-emitting device sealed in the intermediate film, wherein the light-emitting device emits light into the interior of the vehicle through the interior glass plate, the intermediate film comprises a 1 st intermediate film joined to the interior glass plate and a 2 nd intermediate film joined to the exterior glass plate, and the total visible light transmittance of members located on the vehicle interior side of the light-emitting device is 50% or less.

Effects of the invention

In the laminated glass in which the light-emitting device is enclosed, the wiring connected to the light-emitting element can be made less recognizable from the inside of the vehicle by the disclosed embodiment.

Drawings

Fig. 1 is a view illustrating a laminated glass of the present embodiment.

Fig. 2 is a perspective view illustrating a curved shape of the laminated glass of the present embodiment.

Fig. 3 is a view illustrating an installation angle of laminated glass.

Fig. 4 is a partially enlarged plan view of a region B of fig. 1 (a).

Fig. 5 is a plan view showing a modified example 1 of the laminated glass of the present embodiment.

Fig. 6 is a plan view showing a modified example 2 of the laminated glass of the present embodiment.

Fig. 7 is a plan view showing a modified example 3 of the laminated glass of the present embodiment.

Fig. 8 is a plan view showing a modified example 4 of the laminated glass of the present embodiment.

Fig. 9 is a diagram (1) illustrating an embodiment.

Fig. 10 is a diagram (2) illustrating an embodiment.

Detailed Description

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same components are denoted by the same reference numerals, and redundant description thereof may be omitted. In the drawings, the size and shape of a part may be exaggerated to facilitate understanding of the contents of the present invention.

Here, the vehicle is typically an automobile, but also refers to a moving object having a laminated glass, including an electric train, a ship, an airplane, and the like.

The planar shape is a shape of the predetermined region of the laminated glass viewed from the direction normal to the vehicle interior surface of the laminated glass.

Fig. 1 is a view illustrating a laminated glass according to the present embodiment, fig. 1(a) schematically shows the laminated glass when viewed from the inside of a vehicle to the outside of the vehicle after the laminated glass is mounted on the vehicle, and fig. 1(b) is a cross-sectional view taken along line a-a of fig. 1 (a).

As shown in fig. 1, a laminated glass 10 is a laminated glass for a vehicle, which has a glass plate 11, a glass plate 12, an interlayer 13, a shielding layer 14, and a light-emitting device 15. B indicates a region where the light emitting device 15 is disposed. That is, in the laminated glass 10, the light emitting devices are arranged in 2 regions near the left and right sides. The light emitting device 15 may be disposed in 1 region of the laminated glass 10, or may be disposed in 3 or more regions. The light emitting device 15 may be disposed over the entire inner region of the shielding layer 14 in a plan view.

The laminated glass 10 is shown in a flat plate shape in fig. 1, but as shown in fig. 2, the laminated glass 10 may be formed in a multi-curved shape curved in both the longitudinal direction and the short direction. Alternatively, the laminated glass 10 may have a single-curved shape that is curved only in the longitudinal direction or a single-curved shape that is curved only in the short-side direction. When the laminated glass 10 is bent, it is preferably bent so as to be convex toward the vehicle exterior.

In fig. 1 and 2, the laminated glass 10 is rectangular, but the planar shape of the laminated glass 10 is not limited to rectangular, and may be any shape including trapezoidal.

The laminated glass 10 can be suitably used for, for example, a front window glass, a rear delta glass, a rear window glass, a roof glass, an additional window (エクストラウインドウ), and the like for a vehicle.

For example, when the rear window is attached to the vehicle with the rear window tilted forward, the visibility to the rear is poor because the rear view of the vehicle driver is narrowed when only the rear window is present. The additional window is then a glass mounted under the rear window glass of the vehicle in order to improve the rear visibility of the driver of the vehicle.

Mounting angle theta of additional window_ECan be mounted at an angle theta to the rear window_RDifferent. Mounting angle theta of additional window_EMay be more than 50 deg. relative to the ground. Preferably above 70 deg.. Here, as shown in fig. 3(a) and 3(b), the installation angle θ is an angle formed by a line connecting the center point of the horizontal width of the laminated glass 10 to the top edge in order from the bottom edge as a center line L and a horizontal plane H (a plane parallel to the ground). Fig. 3(a) schematically shows a state in which the laminated glass is recognized from the outside of the vehicle interior to the inside of the vehicle interior when the laminated glass is mounted on the vehicle, and fig. 3(b) is a vertical cross section passing through a center line L in fig. 3 (a).

As described above, the rear window is attached to the vehicle with the rear window tilted forward, that is, the attachment angle θ of the rear window_RIn the case where the angle of the window to the ground is 10 ° to 40 °, if an additional window is further disposed below the rear window glass, the additional window has an attachment angle θ_EWhen the angle is 50 ° or more with respect to the ground, the rearward field of view of the vehicle driver can be widened.

In addition, the laminated glass 10 is not limited to the additional window. If the attachment angle θ of the laminated glass 10 is 50 ° or more with respect to the ground, the laminated glass 10 may be a rear window glass, or may be a front window glass, a rear window glass, or a rear quarter glass. That is, the attachment angle θ of the laminated glass 10 to the ground is preferably 50 ° or more. More preferably 70 ° or more.

On the other hand, the laminated glass 10 may be attached at an attachment angle θ of 10 ° or less, that is, substantially parallel to the ground. That is, the laminated glass 10 may be a roof glass.

The glass plate 11 is an interior glass plate that becomes the interior of the vehicle when the laminated glass 10 is mounted on the vehicle. The glass plate 12 is a vehicle exterior glass plate that becomes a vehicle exterior side when the laminated glass 10 is mounted on a vehicle.

When the laminated glass 10 is bent, the curvature radius is preferably 1000mm or more and 100000mm or less. The glass plate 11 and the glass plate 12 may have the same or different radii of curvature. In the case where the glass plate 11 and the glass plate 12 have different radii of curvature, the radius of curvature of the glass plate 11 is larger than the radius of curvature of the glass plate 12.

The glass plate 11 and the glass plate 12 are a pair of glass plates facing each other, and the interlayer 13 and the light-emitting device 15 are positioned between the pair of glass plates. The glass plate 11 and the glass plate 12 are fixed with the interlayer 13 and the light emitting device 15 interposed therebetween.

The interlayer film 13 is a film for bonding the glass plate 11 and the glass plate 12. The intermediate film 13 includes, for example, an intermediate film 131 bonded to the glass plate 11 and an intermediate film 132 bonded to the glass plate 12. A frame-shaped intermediate film, which is different from the

intermediate films

131 and 132, may be provided between the

intermediate films

131 and 132 and surrounds the outer periphery of the light-emitting device 15. When it is not particularly necessary to distinguish the intermediate film 131 from the intermediate film 132, the intermediate film is simply referred to as an intermediate film 13.

The outer periphery of the intermediate film 13 is preferably subjected to a trimming process, that is, the end (edge) of the intermediate film 13 is preferably processed so as not to protrude from the end (edge) of the glass plate 11 and the glass plate 12 to a large extent. It is preferable that the end of the interlayer film 13 protrude from the end of the

glass plates

11 and 12 by 150 μm or less, so that the appearance is not impaired. However, when the laminated glass 10 is a side window glass, the lower edge is shielded by the door panel, and therefore, it is not necessary to perform the edge-trimming process on the lower edge of the intermediate film 13. Details of the glass plate 11, the glass plate 12, and the interlayer 13 will be described later.

The shielding layer 14 is an opaque layer, and may be provided in a band shape along the peripheral edge portion of the laminated glass 10, for example. The shielding layer 14 may have slits, a lattice, a pattern, or the like. The masking layer 14 is, for example, an opaque (e.g., black) colored ceramic layer. The masking layer 14 may be a colored interlayer having a light-shielding property or a colored film, or a combination of a colored interlayer and a colored ceramic layer. The colored film may be integrated with an infrared-ray reflective film or the like. By the presence of the opaque shielding layer 14 in the laminated glass 10, deterioration of a resin such as urethane that holds the peripheral edge portion of the laminated glass 10 on the vehicle body due to ultraviolet rays can be suppressed.

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

In the example of fig. 1 and 2, the shielding layer 14 is provided on the peripheral edge portion of the vehicle interior side surface of the glass plate 11. However, the shielding layer 14 may be provided to both the peripheral edge portion of the vehicle interior side surface of the glass plate 11 and the peripheral edge portion of the vehicle interior side surface of the glass plate 12 as necessary.

Fig. 4 is a partially enlarged plan view of a region B of fig. 1 (a). However, in fig. 4, the wiring 153 of the light emitting device 15 is not shown.

Referring to fig. 1 and 4, the light-emitting device 15 includes a base 151, a plurality of light-emitting elements 152 mounted on the base 151, and wires 153 connected to the light-emitting elements 152. The light emitting device 15 may be a light guide member (not shown). In this case, the light guide member is sandwiched between the intermediate film 131 and the intermediate film 132. The light guide member guides light emitted from the light emitting elements provided inside or outside the glass plate 11 and the glass plate 12, and emits the light. For example, in a plan view, at least a part of the peripheral edge of the light-emitting device 15 overlaps the shielding layer 14, and at least a part of the peripheral edge is located further inside the shielding layer 14.

The light-emitting device 15 may further include constituent elements (such as a protective layer covering the light-emitting element 152 or the wiring 153) other than the base 151, the light-emitting element 152, and the wiring 153, as necessary. The light-emitting device 15 may further include a bus bar, not shown, for supplying power to the plurality of light-emitting elements 152. In addition, the laminated glass 10 may further have a wire harness connected to the bus bar in order to supply power from the outside of the laminated glass 10. In fig. 1, the wiring 153 is schematically illustrated, and actually, the arrangement of the wiring 153 on the substrate 151 is relatively complicated.

The substrate 151 is, for example, polyethylene terephthalate. The substrate 151 may be polyethylene naphthalate, polyaniline, polythiophene, carbon nanotube, graphene, or the like.

The Light Emitting element 152 is, for example, an LED (Light Emitting Diode). The light-emitting element 152 may be an organic EL (organic electroluminescence), an inorganic EL (inorganic electroluminescence), or the like. The LEDs described herein also include Micro LEDs.

The shape of the light-emitting element 152 is not particularly limited, and is, for example, a rectangular parallelepiped. When the light-emitting element 152 is a rectangular parallelepiped, the dimensions are, for example, 1.0mm in length × 0.5mm in width × 0.2mm in height, 1.6mm in length × 0.8mm in width × 0.3m in height, 3.2m in length × 2.0mm in width × 1.0mm in height, and the like.

When the light emitting element 152 is an LED, the light emitting element 152 preferably has a shape with a length of 0.1mm to 3.2mm, a width of 0.1mm to 2.0mm, and a height of 0.1mm to 1.0 mm. The shape of the light emitting elements 152 is preferably such that the light emission of each light emitting element 152 is easily recognized by the passenger in the vehicle if the light emitting element 152 has a length of 0.1mm to 3.2mm and a width of 0.1mm to 2.0 mm. If the height of the light emitting element 152 is 0.1mm to 1.0mm, it is preferable to seal the interlayer 13 between the glass plate 11 and the glass plate 12.

When the light emitting element 152 is a Micro LED, the light emitting element 152 has a shape with a length and a width of 100 μm or less, preferably 50 μm or less, and more preferably 20 μm or less. From the viewpoint of various conditions in manufacturing, etc., particularly in order to reduce the edge effect, the lower limit value of both the length and width of the Micro LED is preferably 3 μm or more. The Micro LED has a height of 10 to 50 μm.

The wiring 153 is not particularly limited if it is a conductive material, and examples thereof include Indium Tin Oxide (ITO), fluorine-doped tin oxide (FTO), antimony-doped tin oxide (ATO), zinc oxide (ZnO), and metal nanowires (silver nanowires, copper nanowires, etc.).

The bus bar may be formed of at least 1 metal selected from silver, copper, tin, gold, aluminum, iron, tungsten, chromium, and nickel, an alloy containing 2 or more metals selected from the above metals, a conductive organic polymer, or the like by a sputtering method or the like. As the bus bar, a copper tape or a plain-weave copper wire can be used, and for example, a silver paste is applied by a printing method such as screen printing and fired. The bus bar may be formed at a peripheral portion of the light emitting device 15.

As the wire harness, a flexible printed substrate (FPC), a Flexible Flat Cable (FFC), or a wire may be used.

The light-emitting device 15 emits light into the vehicle through the glass plate 11, and the interlayer 13 is sealed such that the substrate 151 faces the glass plate 12 side and the plurality of light-emitting elements 152 face the glass plate 11 side. The surface of the light-emitting device 15 on the glass plate 11 side (the mounting surface of the light-emitting element 152) is covered with the interlayer film 131, and the surface of the light-emitting device 15 on the glass plate 12 side is covered with the interlayer film 132. The peripheral edge of the substrate 151 of the light-emitting device 15 is not necessarily parallel to the peripheral edges of the glass plate 11 and the glass plate 12.

The emission color of the light-emitting element 152 is not particularly limited, and is, for example, red, green, blue, yellow, white, or the like. A plurality of light-emitting elements 152 having different emission colors may be mounted on 1 substrate 151.

The light-emitting device 15 can emit light from the plurality of light-emitting elements 152 to display, for example, characters (for example, display of a logo, a notification, a warning display, or the like) toward the inside of the vehicle. The light-emitting device 15 can emit light from the plurality of light-emitting elements 152 to display an image (e.g., an arrow or the like) or a pattern, for example, toward the vehicle interior. That is, the plurality of light emitting elements 152 may be arranged regularly or irregularly, that is, the plurality of light emitting elements 152 may be arranged at equal and unequal distances. The light emitting element 15 may be used as a ceiling lamp, an ultraviolet sterilization lamp, or the like.

Preferably, at least a part of the peripheral edge portion of the light-emitting device 15 overlaps the shielding layer 14 in a plan view, whereby at least a part of the peripheral edge portion of the light-emitting device 15 can be concealed and is not easily recognized from the vehicle exterior side and/or the vehicle interior side. That is, the light emitting device 15 can conceal the edge of the base material 151 so as to make it difficult to recognize the edge from the vehicle exterior side and/or the vehicle interior side, and can conceal the perspective deformation caused by the edge of the base material 151 so as to make it difficult to recognize the edge from the vehicle exterior side and/or the vehicle interior side. Further, the light emitting device 15 can conceal the bus bar formed in the peripheral edge portion thereof so as to be difficult to recognize from the vehicle exterior side and/or the vehicle interior side. When the shielding layer 14 is provided on both the peripheral edge of the vehicle interior side surface of the glass plate 11 and the peripheral edge of the vehicle interior side surface of the glass plate 12, the bus bar electrically connected to the light emitting device 15 is preferably not easily recognized from both the vehicle exterior side and the vehicle interior side.

The glass plate 11, the glass plate 12, and the interlayer 13 will be described in detail below.

[ glass plate ]

The

glass plates

11 and 12 may be either inorganic glass or organic glass. Examples of the inorganic glass include soda lime glass, aluminosilicate glass, borosilicate glass, alkali-free glass, and quartz glass, and are not particularly limited. The glass plate 12 located outside the laminated glass 10 is preferably an inorganic glass from the viewpoint of scratch resistance, and is preferably a soda lime glass from the viewpoint of formability. When the

glass plates

11 and 12 are soda lime glass, transparent glass, green glass containing a predetermined amount or more of iron component, and UV-cut green glass can be suitably used.

The inorganic glass may be any of non-tempered glass and tempered glass. The unreinforced glass is formed by forming molten glass into a plate shape and annealing the formed glass. The tempered glass is a glass in which a compressive stress layer is formed on the surface of an unreinforced glass.

The tempered glass may be any of physically tempered glass such as air-cooled tempered glass and chemically tempered glass. In the case of physically strengthened glass, the glass surface can be strengthened by an operation other than annealing, for example, by rapidly cooling a uniformly heated glass sheet from a temperature near the softening point in the bending process, thereby generating a compressive stress layer on the glass surface by utilizing the temperature difference between the glass surface and the inside of the glass.

In the case of chemically strengthened glass, the glass surface can be strengthened by, for example, applying a compressive stress to the glass surface by an ion exchange method or the like after bending. Further, glass that absorbs ultraviolet light or infrared light may be used, and transparent glass is more preferable, but a glass plate colored to such an extent that transparency is not impaired may also be used.

On the other hand, as the material of the organic glass, polycarbonate, for example, acrylic resin such as polymethyl methacrylate, and transparent resin such as polyvinyl chloride and polystyrene can be cited.

The shape of the

glass plates

11 and 12 is not particularly limited to a rectangle, and may be various shapes and shapes processed into a curvature. As the bending of the

glass sheets

11 and 12, gravity forming, press forming, roll forming, or the like can be used. The method for forming the

glass sheets

11 and 12 is also not particularly limited, but for example, in the case of inorganic glass, a glass sheet formed by a float method or the like is preferable.

The thinnest portion of the glass plate 12 is preferably 1.1mm to 3 mm. When the thickness of the glass plate 12 is 1.1mm or more, the strength such as the flying stone resistance is sufficient, and when it is 3mm or less, the mass of the laminated glass 10 is not excessively large, which is preferable from the viewpoint of fuel efficiency of the vehicle. The thinnest portion of the glass plate 12 is more preferably 1.8mm to 2.8mm, still more preferably 1.8mm to 2.6mm, still more preferably 1.8mm to 2.2mm, and still more preferably 1.8mm to 2.0 mm.

The thickness of the glass plate 11 is preferably 0.3mm to 2.3 mm. The glass plate 11 has good workability when the plate thickness is 0.3mm or more, and does not have an excessively large mass when the plate thickness is 2.3mm or less.

Further, the

glass plates

11 and 12 may be flat plate-shaped or curved. However, when the

glass plates

11 and 12 are curved and the plate thickness of the glass plate 11 is not appropriate, if 2 pieces of glass having a particularly large curvature are formed as the

glass plates

11 and 12, the shapes of the 2 pieces are not matched, and the glass quality such as residual stress after press bonding is greatly affected.

However, by setting the thickness of the glass plate 11 to 0.3mm or more and 2.3mm or less, the glass quality such as residual stress can be maintained. Making the thickness of the glass plate 11 0.3mm or more and 2.3mm or less is particularly effective for maintaining the glass quality of glass having a deep curvature. The thickness of the glass plate 11 is more preferably 0.5mm to 2.1mm, and still more preferably 0.7mm to 1.9 mm. If within this range, the above effect becomes more remarkable.

A coating having a water-repellent, ultraviolet or infrared-cut function or a coating having low-reflection properties and low-emission properties may be provided on the outer side of the glass plate 11 and/or 12. The glass plate 11 and/or 12 may be provided with a coating film such as an ultraviolet or infrared cut-off film, a low emission film, a visible light absorption film, or a coloring film on the side in contact with the interlayer film 13.

In the case where the

glass plates

11 and 12 are inorganic glass having a curved shape, the

glass plates

11 and 12 may be curved after forming by the float method and before bonding via the interlayer film 13. The bending is performed by heating to soften the glass. The heating temperature of the glass during bending is about 550 ℃ to 700 ℃.

[ intermediate film ]

As the interlayer film 13, a thermoplastic resin conventionally used for such applications, such as a plasticized polyvinyl acetal resin, a plasticized polyvinyl chloride resin, a saturated polyester resin, a plasticized saturated polyester resin, a polyurethane resin, a plasticized polyurethane resin, an ethylene-vinyl acetate copolymer resin, an ethylene-ethyl acrylate copolymer resin, a cycloolefin polymer resin, and an ionomer resin, can be cited. Further, a resin composition containing a hydrogenated modified block copolymer described in Japanese patent No. 6065221 can also be suitably used.

Among them, from the viewpoint of excellent balance among various properties such as transparency, weather resistance, strength, adhesive strength, penetration resistance, impact energy absorption, moisture resistance, heat insulation, and sound insulation, a plasticized polyvinyl acetal resin is preferably used. Such thermoplastic resins may be used alone or in combination of 2 or more. The "plasticization" in the plasticized polyvinyl acetal resin means that the resin can be plasticized by adding a plasticizer. The same meaning is also indicated for other plasticizing resins.

However, when the light-emitting device 15 is sealed in the interlayer film 13, there is a possibility that the deterioration may be caused by a specific plasticizer depending on the kind of the sealed material, and in this case, it is preferable to use a resin that does not substantially contain the plasticizer. That is, it is sometimes preferable that the intermediate film 13 does not contain a plasticizer. The resin containing no plasticizer may, for example, be an ethylene-vinyl acetate copolymer resin.

Examples of the polyvinyl acetal resin include a polyvinyl formal resin obtained by reacting polyvinyl alcohol (hereinafter, also referred to as "PVA" as needed) with formaldehyde, a polyvinyl acetal resin in a narrow sense obtained by reacting PVA with acetaldehyde, and a polyvinyl butyral resin obtained by reacting PVA with n-butyl aldehyde (hereinafter, also referred to as "PVB" as needed), and among these, PVB is particularly preferably used from the viewpoint 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 2 or more.

However, the material for forming the intermediate film 13 is not limited to the thermoplastic resin. The intermediate film 13 may further contain functional particles such as an infrared absorber, an ultraviolet absorber, and a luminescent agent. The intermediate film 13 may have a colored portion called a light-shielding tape. The coloring pigment used for forming the colored portion may be a coloring pigment used as a coloring pigment for plastics, and the visible light transmittance of the colored portion may be 40% or less, and examples thereof include, but are not particularly limited to, azo pigments, phthalocyanine pigments, quinacridone pigments, and the like,

Pyrenone type, pyrene type

Organic coloring pigments such as oxazines, anthraquinones, and isoindolinones, and inorganic coloring pigments such as oxides, hydroxides, sulfides, chromic acid, sulfates, carbonates, silicates, phosphates, arsenates, ferrocyanides, carbon, and metal powders. These coloring pigments may be used alone or in combination of 2 or more. The amount of the coloring pigment added is not particularly limited as long as the visible light transmittance of the colored portion is 40% or less and the amount is not particularly limited as long as the amount matches the target color tone.

The thinnest part of the intermediate film 13 is preferably 0.5mm or more. When the interlayer 13 is composed of the 1 st interlayer 131 and the 2 nd interlayer 131, the thickness of the interlayer 13 is the total thickness of the 1 st interlayer 131 and the 2 nd interlayer 132. When the thickness of the thinnest portion of the interlayer film 13 is 0.5mm or more, the impact resistance required for the laminated glass is sufficient. The thickest part of the film thickness of the intermediate film 13 is preferably 3mm or less. If the maximum thickness of the interlayer film 13 is 3mm or less, the quality of the laminated glass will not be excessive. The maximum thickness of the interlayer film 13 is more preferably 2.8mm or less, and still more preferably 2.6mm or less.

In addition, the intermediate film 13 may have 3 or more layers. For example, the sound insulating properties of the laminated glass 10 can be improved by forming an interlayer film from 3 or more layers and adjusting the plasticizer so that the shear modulus of some of the layers other than the layers on both sides is smaller than the shear modulus of the layers on both sides. In this case, the shear modulus of the layers on both sides may be the same or different.

It is preferable that the intermediate film 131 and the intermediate film 132 included in the intermediate film 13 are formed of the same material, but the intermediate film 131 and the intermediate film 132 may be formed of different materials. From the viewpoint of adhesiveness between the

glass plates

11 and 12, or functional materials inserted into the laminated glass 10, it is preferable to use the above materials in an amount of 50% or more of the thickness of the interlayer film 13.

In the production of the intermediate film 13, for example, the resin material for forming the intermediate film is appropriately selected and extrusion-molded in a heated and molten state by using an extruder. Extrusion conditions such as the extrusion speed of the extruder are set to be uniform. Then, the resin film obtained by extrusion molding is matched with the design of the laminated glass, and for example, stretched as necessary so that the upper and lower sides have curvatures, thereby completing the intermediate film 13.

[ laminated glass ]

The total thickness of the laminated glass 10 is preferably 2.8mm to 10 mm. When the total thickness of the laminated glass 10 is 2.8mm or more, sufficient rigidity can be secured. When the total thickness of the laminated glass 10 is 10mm or less, the haze can be reduced while obtaining sufficient transmittance.

The sheet deviation of the glass sheet 11 and the glass sheet 12 is preferably 1.5mm or less, more preferably 1mm or less, at least 1 side of the laminated glass 10. Here, the plate misalignment between the glass plate 11 and the glass plate 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.

It is advantageous that the sheet deviation between the glass sheet 11 and the glass sheet 12 is 1.5mm or less on at least 1 side of the laminated glass 10, so that the appearance is not impaired. It is more advantageous that the sheet deviation between the glass sheet 11 and the glass sheet 12 is 1.0mm or less in at least 1 side of the laminated glass 10 in order not to impair the appearance.

In the production of the laminated glass 10, the interlayer film 13 and the light-emitting device 15 are sandwiched between the glass plate 11 and the glass plate 12 to form a laminate. Then, for example, the laminate is put in a rubber bag and bonded in a vacuum of-65 to-100 kPa at a temperature of about 70 to 110 ℃. The heating conditions, temperature conditions, and lamination method may be appropriately selected in consideration of the properties of the light-emitting device 15, for example, such that no degradation occurs during lamination.

Further, for example, by performing the pressure bonding treatment under heating and pressure at 100 to 150 ℃ and an absolute pressure of 0.6 to 1.3MPa, the laminated glass 10 having more excellent durability can be obtained. However, in some cases, the heating and pressing step may not be used in consideration of simplification of the steps and the characteristics of the material sealed in the laminated glass 10.

In other words, a method called "cold bending" in which one or both of the

glass plates

11 and 12 are joined to each other in an elastically deformed state may be used. The cold bending can be achieved by using a laminate composed of the glass plate 11, the glass plate 12, the intermediate film 13, and the light emitting device 15 fixed by temporary fixing means such as a tape, a previously-known pre-pressure bonding device such as a roller, a rubber bag, or a rubber chamber, and an autoclave.

In addition to the interlayer 13 and the light-emitting device 15, a film or a device having functions such as an electric heating wire, infrared reflection, light emission, power generation, dimming, touch panel, visible light reflection, scattering, decoration, and absorption may be present between the glass plate 11 and the glass plate 12 within a range in which the effects of the present invention are not impaired. Further, a film having functions of antifogging, water repellency, heat insulation, low reflection, and the like may be present on the surface of the laminated glass 10. Further, a film having functions of heat insulation, heat generation, and the like may be present on the vehicle exterior side surface of the glass plate 11 or the vehicle interior side surface of the glass plate 12.

[ visibility of wiring, light-emitting element, and substrate when light-emitting element is not emitting ]

In the light-emitting device 15, when the light-emitting element 152 does not emit light, it is preferable that the edge of the base 151, the light-emitting element 152, and the wiring 153 are not recognized from the inside of the vehicle from the viewpoint of improvement in design. In particular, if the irregularly arranged wiring 153 is recognized when the light emitting element 152 is not emitting light, the design property is greatly deteriorated, and it is important that the wiring 153 is not easily recognized from the vehicle interior.

Since there is no regulation of visible light transmittance in the regulations for front side window glass, rear triangular window glass, rear window glass, roof glass, additional window glass for a vehicle, and the like, it is possible to set an arbitrary visible light transmittance. In this case, the total visible light transmittance of the members located on the vehicle interior side of the light-emitting device 15 in the laminated glass 10 is 50% or less. The visible light transmittance can be determined according to JIS R3106: 1998.

In the laminated glass 10, the glass plate 11 and the interlayer film 131 are members located on the vehicle interior side of the light emitting device 15. Therefore, in the laminated glass 10, the visible light transmittance of the visible light passing through the 2 layers of the glass plate 11 and the interlayer film 131 is 50% or less, preferably 40% or less, and more preferably 20% or less.

Accordingly, by setting the total visible light transmittance of the members located on the vehicle interior side of the light emitting device 15 to 50% or less, the edge of the base 151, the light emitting element 152, and the wiring 153 can be made less visible from the vehicle interior when the light emitting element 152 is not emitting light, and thus the design can be improved.

The total visible light transmittance of the members located on the vehicle interior side of the light-emitting device 15 is more preferably 40% or less, still more preferably 30% or less, still more preferably 20% or less, yet more preferably 10% or less, and still more preferably 5% or less. The lower the visible light transmittance, the less easily the edge of the base 151, the light-emitting element 152, and the wiring 153 are visible from the vehicle interior. Even when the total visible light transmittance of the members located on the vehicle interior side of the light emitting device 15 is decreased, the light emitted from the light emitting element 152 can be recognized from the vehicle interior when the light emitting element 152 emits light.

In order to make the visible light transmittance of the glass plate 11 and the interlayer film 131 50% or less, for example, privacy glass may be used for the glass plate 11, and a transparent interlayer film may be used for the interlayer film 131. In this case, for example, the glass plate 11 has a visible light transmittance of 50% or less, and the intermediate film 131 has a visible light transmittance of 90% or more.

In order to make the visible light transmittance of the glass plate 11 and the interlayer film 131 50% or less, green glass or transparent glass may be used for the glass plate 11, and a colored interlayer film may be used for the interlayer film 131. In this case, for example, the glass plate 11 has a visible light transmittance of 80% or less, and the intermediate film 131 has a visible light transmittance of 50% or less.

In order to make the visible light transmittance of the glass plate 11 and the interlayer film 131 50% or less, privacy glass may be used for the glass plate 11, and a colored interlayer film may be used for the interlayer film 131. In this case, for example, the glass plate 11 has a visible light transmittance of 50% or less, and the intermediate film 131 has a visible light transmittance of 50% or less.

Here, the green glass is glass having high transparency. For example, the visible light transmittance of the green glass is about 83% to 88% when the thickness is 1.6mm to 2.0 mm. The transparent glass is a glass having a higher transparency than the green glass, and has a visible light transmittance of about 88% to 92% when the thickness is, for example, 1.8mm to 2.0 mm.

The transparent intermediate film is an intermediate film having high transparency. For example, the transparent intermediate film has a visible light transmittance of about 90% to 95% when the film thickness is 0.76 mm. For example, a product having a visible light transmittance of 93.7% when the film thickness is 0.76mm is commercially available from Hydroxycarb chemical industries, Inc. (Tokyo Shuichi chemical Co., Ltd.) or Istman chemical Co., Ltd. (イーストマン Co.).

The privacy glass is glass having lower transparency than the green glass and the transparent glass, and is also called dark gray glass. Can be converted into Fe by conversion in the glass plate 11₂O₃Is realized by adjusting the total iron content of the iron-containing alloy. For example, the visible light transmittance of the privacy glass can be adjusted to about 40% to 50% when the thickness is 1.8mm, and the visible light transmittance of the privacy glass can be adjusted to about 30% to 45% when the thickness is 2.0 mm.

In an example of the composition of the privacy glass, SiO is contained as a main composition of the glass in terms of mass% based on oxides₂：66～75％、Na₂O：10～20％、CaO：5～15％、MgO：0～6％、Al₂O₃：0～5％、K₂O: 0-5%, FeO: 0.13 to 0.9% by weight of Fe₂O₃Total iron represented: more than 0.8% and less than 2.4%, TiO₂: more than 1% and not more than 5%, and contains 100 to 500 mass ppm of CoO, 0 to 70 mass ppm of Se, and 0 to 800 mass ppm of Cr based on the total amount of the main components of the glass₂O₃And CoO, Se and Cr₂O₃The total amount of (B) is less than 0.1 mass%.

Further, as for the privacy glass, there is a detailed description in, for example, international publication No. 2015/088026, the contents of which are incorporated herein by reference.

The colored intermediate film is an intermediate film having lower transparency than the transparent intermediate film. The colored intermediate film can be produced by coloring the materials exemplified in the description of the [ intermediate film ]. Specifically, a colored intermediate film is mainly produced by incorporating a colorant into a composition containing a thermoplastic resin. The colored intermediate film may contain a plasticizer for adjusting the glass transition temperature.

The colorant is not particularly limited as long as it can reduce visible light transmittance, and examples thereof include dyes, inorganic pigments, and organic pigments. Among them, inorganic pigments or organic pigments are preferable from the viewpoint of less possibility of discoloration due to long-term use, and inorganic pigments are preferable from the viewpoint of excellent light resistance.

Examples of the organic pigment include black pigments such as aniline black and red pigments such as alizarin lake (アリザリンレーキ). Examples of the inorganic pigment include carbon pigments and metal oxide pigments. Examples thereof include black pigments such as carbon black, ivory black, masson black (マルスブラック), sumac black (ピーチブラック), lamp black (ランプブラック) and magnetic ferroferric oxide, brown pigments such as brown, dark brown (バーントアンバー), yellow brown (イエローウォーカー), rust brown (ヴァンダイクブラウン), ochre (シェンナ) and dark ochre (バーントシェンナ), red pigments such as bengal, molybdate red (モリブデンレッド) and cadmium red (カドミウムレッド), orange pigments such as equatorial orange (erythrosin) and chrome vermilion (クロムバーミリオン), blue pigments such as ultramarine blue, prussian blue, cobalt blue and azure blue, green pigments such as chromium oxide, turquoise green (ピリジアン), china pink (エメラルドグリーン) and cobalt green, yellow pigments such as lead yellow, cadmium yellow, iron oxide yellow, titanium yellow, etc., and violet pigments such as manganese violet, mineral violet, etc. These colorants may be used in combination of 1 or 2 or more.

The amount of the colorant blended is such that the visible light transmittance of the intermediate film 131 becomes 50% or less. The colored intermediate film may further contain 1 or 2 or more of various additives such as an infrared absorber, an ultraviolet absorber, a fluorescent agent, an adhesion regulator, a coupling agent, a surfactant, an antioxidant, a heat stabilizer, a light stabilizer, a dehydrating agent, an antifoaming agent, an antistatic agent, and a flame retardant.

The colored intermediate film can be produced by forming a printed layer in a dark color on the surface of the uncolored intermediate film 131 to form a colored intermediate film. A method of forming the dark color printed layer may generally use a printing method of applying a colored material to a resin substrate. As the colored material, the same organic pigments or inorganic pigments as those of the above colorants can be cited. In this case, since the printed layer does not need to have durability at a temperature near the softening point of glass, as in the case of a shielding layer made of ceramic, for example, an organic pigment containing carbon black can be used. The thickness of the printing layer may be appropriately adjusted to a thickness such that the visible light transmittance of the intermediate film 131 becomes 50% or less.

By using the colored intermediate film, the visible light transmittance of the intermediate film 131 can be greatly reduced. For example, the intermediate film 131 may have a visible light transmittance of 20% or less, 10% or less, or 5% or less. For example, a product having a visible light transmittance of 1.33% when the film thickness is 0.76mm and a product having a visible light transmittance of 8.96% when the film thickness is 0.76mm are commercially available from Hydrocarbon chemical Co., Ltd and Istman chemical Co. Further, a product having a visible light transmittance of 18.00% at a film thickness of 0.76mm was obtained from waterlogging chemical Co.

When the visible light transmittance of the glass plate 12 is 80% or more and the visible light transmittance of the glass plate 11 is 50% or less, the compositions of the glass plate 11 and the glass plate 12 cannot be the same, and the bending conditions of the two are different. Therefore, in the case where the

glass plates

11 and 12 are in a curved shape, it is difficult to bend the

glass plates

11 and 12 with a shape accuracy to such an extent that the laminated glass 10 can be easily produced.

For this reason, when the

glass plates

11 and 12 are curved, it is more preferable to set the visible light transmittance of the intermediate film 131 to 50% or less than 50% of the visible light transmittance of the glass plate 11. In this case, the compositions of the glass plate 11 and the glass plate 12 can be made the same, and the bending conditions of both can be made the same, so that the laminated glass 10 can be easily manufactured. The glass plate 12 having the same composition as the glass plate 11 having a visible light transmittance of 50% or less and having the same visible light transmittance of 50% or less may be used. That is, the glass plate 11 and the glass plate 12 are preferably the same composition.

In the laminated glass 10, the glass plate 11 and the interlayer 131 are members located on the vehicle interior side of the light emitting device 15, but the laminated glass 10 may have members other than the glass plate 11 and the interlayer 131 on the vehicle interior side of the light emitting device 15 in order to reduce the visible light transmittance.

For example, the laminated glass 10 may further include a privacy film on the vehicle interior side of the light-emitting device 15, in addition to the glass plate 11 and the interlayer film 131. The privacy film may be disposed on the vehicle interior side and/or the vehicle exterior side of the glass plate 11, for example. Examples of the privacy film include resin films such as a smoke film.

For example, films having a visible light transmittance of 8% to 71% are available from 3M company. Further, a film having a visible light transmittance of 11% to 65% is commercially available from Linekuke (リンテック Co.). Further, a film having a visible light transmittance of 7% to 44% is available from Shikino corporation (アイケーシー Co.). For example, a film having a total visible light transmittance of 50% or less of members located on the vehicle interior side of the light-emitting device 15 may be selected from among the above films and used as the privacy film.

When the laminated glass 10 has a privacy film on the vehicle interior side of the light-emitting device 15, green glass and transparent glass can be used as the glass plate 11, and a transparent interlayer can be used as the interlayer 131. However, the privacy film and the privacy glass and/or the colored intermediate film may be used in combination.

As described above, in the light-emitting device 15, in order to make the edge of the base material 151, the light-emitting element 152, and the wiring 153 less likely to be recognized from the vehicle interior when the light-emitting element 152 is not emitting light, it is preferable that the total visible light transmittance of the members located on the vehicle interior side of the light-emitting device 15 be 50% or less. Specifically, in the laminated glass 10, the total visible light transmittance of the members located on the vehicle interior side of the light emitting device 15 is preferably 50% or less even in the portion not overlapping with the shielding layer 14 in a plan view. In addition, in the laminated glass 10, it is preferable that the total visible light transmittance of the members located on the vehicle interior side of the light emitting device 15 in the portion not overlapping with the shielding layer 14 is greater than 0%, because the vehicle exterior can be seen from the vehicle interior.

When the total visible light transmittance of the members located on the vehicle interior side of the light emitting device 15 is within a range of 50% or less, the visible light transmittance may be partially changed. For example, in the laminated glass 10, the visible light transmittance of a portion which does not overlap with the edge of the substrate 151, the light-emitting element 152, and the wiring 153 in a plan view may be higher than that of a portion which overlaps with at least 1 of the edge of the substrate 151, the light-emitting element 152, and the wiring 153. By thus reducing the visible light transmittance of only the portion desired to be concealed, it is possible to make the portion desired to be concealed less visible while ensuring visibility from the inside of the vehicle to the outside.

In addition, the visible light transmittance of the glass plate 12 and/or the intermediate film 132, which is located on the vehicle outer side of the light-emitting device 15 and serves as the background of the light-emitting device 15, can be reduced. Thereby, the edge of the base 151, the light emitting element 152, and the wiring 153 are less likely to be recognized from the inside of the vehicle when the light emitting element 152 does not emit light, and the members are less likely to be seen from the outside of the vehicle.

To reduce the visible light transmission of the glass sheet 12 and/or the intermediate film 132, for example, privacy glass may be used for the glass sheet 12 and a transparent intermediate film may be used for the intermediate film 132. In this case, the visible light transmittance of the glass plate 12 is 50% or less, and the visible light transmittance of the intermediate film 132 is 90% or more.

In order to reduce the visible light transmittance of the glass plate 12 and/or the intermediate film 132, green glass or transparent glass may be used for the glass plate 12, and a colored intermediate film may be used for the intermediate film 132. In this case, for example, the glass plate 12 has a visible light transmittance of 80% or more, and the intermediate film 132 has a visible light transmittance of 50% or less.

In order to reduce the visible light transmittance of the glass plate 12 and/or the intermediate film 132, privacy glass may be used for the glass plate 12, and a colored intermediate film may be used for the intermediate film 132. In this case, for example, the visible light transmittance of the glass plate 12 is 50% or less, and the visible light transmittance of the intermediate film 132 is 50% or less.

In fig. 1, the example in which the light emitting devices 15 are provided in 2 regions near the left and right sides of the laminated glass 10 is shown, but the light emitting devices 15 may be provided in 1 region near the left and/or right sides of the laminated glass 10, or in 3 or more regions.

The region where the light emitting device 15 is provided is not limited to the left and/or right vicinity of the laminated glass, and the light emitting device 15 may be provided in 2 regions B near the upper side as in the laminated glass 10A shown in fig. 5, for example. Alternatively, the light emitting devices 15 may be provided in 1 or 3 or more regions near the upper side of the laminated glass 10A.

The light emitting device 15 may be disposed in 1 region B near the lower side as in the laminated glass 10B shown in fig. 6. Alternatively, the light emitting device 15 may be provided in 2 or more regions near the lower edge of the laminated glass 10B. Alternatively, the light emitting device 15 may be provided in any 2 or more regions selected from the left vicinity, the right vicinity, the upper vicinity, and the lower vicinity of the laminated glass.

The light emitting device 15 may be provided in 1 region B near the lower right corner as in the laminated glass 10C shown in fig. 7. Alternatively, the light-emitting device 15 may be provided in 2 or more regions near the lower right corner of the laminated glass 10C. Alternatively, the light-emitting device 15 may be provided in 1 or more regions near the upper right, upper left, and/or lower left corner of the laminated glass 10C.

The light emitting device 15 may be provided on the entire inner side of the shielding layer 14 in a plan view, as in the laminated glass 10D shown in fig. 8. That is, the light emitting device 15 may be provided over the entire region not overlapping with the shielding layer 14 in a plan view.

Example (embodiment)

The following examples are illustrative, but the present invention is not limited to these examples at all.

[ example 1]

According to the layer structure of example 1 of fig. 9, a glass plate 12 to be an outer plate (a vehicle exterior side glass plate), a glass plate 11 to be an inner plate (a vehicle interior side glass plate), and 2

interlayer films

131 and 132 are prepared in the production of a laminated glass. The glass plate 11 and the glass plate 12 each had a size of 300 mm. times.300 mm. times.2 mm in thickness. The intermediate film 131 and the intermediate film 132 each have a size of 300mm × 300mm × 0.76mm in thickness. Further, a light-emitting device was prepared in which a plurality of LEDs each having a length of 1.6mm × a width of 0.8mm × a height of 0.3mm were mounted on a polyethylene terephthalate substrate, and wiring was formed of ITO.

In the columns of the glass plate 11 and the glass plate 12 in fig. 9, P represents privacy glass, C represents transparent glass, and Green represents Green glass. In the columns of the intermediate film 131 and the intermediate film 132 in fig. 9, C represents a transparent intermediate film, G represents a colored intermediate film, and the parenthesis of G indicates the visible light transmittance of the intermediate film alone. The same is true of fig. 10.

Then, the interlayer film 131, the light emitting device and the interlayer film 132 are sandwiched between the glass plate 11 and the glass plate 12 to form a laminate, and the laminate is put into a rubber bag and bonded in a vacuum having an apparent pressure of-65 to-100 kPa at a temperature of about 70 to 110 ℃. Then, the laminated glass LG1 for evaluation was prepared by heating and pressing under an absolute pressure of 0.6 to 1.3MPa and a temperature of about 100 to 150 ℃.

Then, the laminated glass LG1 for evaluation was evaluated for the visibility of the evaluation target (edge of substrate, LED, and wiring). Specifically, the laminated glass LG1 for evaluation was placed on a white cardboard in a state where the glass plate 12 side was facing downward, and all the LEDs of the under-fluorescent-lamp lighting device were in a non-lighting state. Then, the distance between the observer's point of view and the light-emitting device was set to 0.4m, and it was confirmed whether or not the evaluation objects (the edge of the substrate, the LED, and the wiring) could be recognized from the glass plate 11 side. 10 persons having a visual acuity of 1.5 or more were arbitrarily selected from the observers, and the case where all the persons could not recognize the evaluation object was marked as "good" (acceptable), the case where 7 or more persons could not recognize the evaluation object was marked as "Δ" (acceptable), and the other cases were marked as "x" (unacceptable).

The visible light transmittance Tv1 (%) of the entire laminated glass LG1 for evaluation and the visible light transmittance Tv2 (%) of only the glass plate 11 and the interlayer 131 were measured for the laminated glass LG1 for evaluation by the method according to JIS R3106: 1998.

[ examples 2 to 8]

Laminated glasses LG2 to LG8 for evaluation were prepared in the same manner as in example 1, except that the glass plate 11 and the glass plate 12, and the interlayer film 131 and the interlayer film 132 were prepared in accordance with the layer structures of examples 2 to 8 of fig. 9. Then, the visible light transmittance Tv1 and the visible light transmittance Tv2 of the laminated glasses LG2 to LG8 for evaluation were measured and the visibility was evaluated in the same manner as in example 1.

[ examples 9 to 17]

Laminated glasses LG9 to LG17 for evaluation were prepared in the same manner as in example 1, except that the glass plate 11 and the glass plate 12, and the interlayer film 131 and the interlayer film 132 were prepared in accordance with the layer structures of examples 9 to 17 in fig. 10. Then, the visible light transmittance Tv1 and the visible light transmittance Tv2 of the laminated glasses LG9 to LG17 for evaluation were measured and the visibility was evaluated in the same manner as in example 1.

[ evaluation results ]

The layer structures of the glass plate 11 and the glass plate 12, and the interlayer film 131 and the interlayer film 132, as well as the visible light transmittances Tv1 and Tv2, and the evaluation results of the respective laminated glasses for evaluation are shown in fig. 9 and 10.

As is clear from the evaluation results of fig. 9 and 10, if the visible light transmittance Tv2 is 50% or less, the wiring is not easily recognized from the glass plate 11 side serving as the vehicle interior glass plate when the light-emitting element does not emit light. In order to reduce the visible light transmittance Tv2 to 50% or less, a privacy glass is used for the glass plate 11, a colored intermediate film is used for the intermediate film 131, or both of these methods are used.

It was also found that by reducing the transmittance of the glass plate 12 and/or the intermediate film 132, the wiring, the edge of the substrate, and the LED are not easily visible from the glass plate 11 side, which becomes the vehicle interior glass plate, when the light-emitting element does not emit light.

From the above, the following can be concluded. That is, it is preferable to use privacy glass as the glass plate 11, to use a colored interlayer as the interlayer 131, or to use both of these methods, because the visible light transmittance Tv2 is 50% or less, and it is difficult to see the wiring from the glass plate 11 side which becomes the vehicle interior glass plate. In addition, by using privacy glass as the glass plate 12, or using a colored interlayer as the interlayer 132, or both of these methods, the edges of the wiring and the substrate and the LED are less likely to be seen from the glass plate 11 side which becomes the vehicle interior glass plate, and therefore, this is more preferable.

Although preferred embodiments and the like have been described above in detail, the present invention is not limited to the above embodiments and the like, and various changes and substitutions may be made to the above embodiments and the like without departing from the scope of the claims.

The international patent application claims priority to japanese patent application No. 2019-.

Description of the symbols

10. 10A, 10B, 10C and 10D laminated glass

11. 12 glass plate

13. 131, 132 intermediate film

14 masking layer

15 light emitting device

151 base material

152 light emitting element

153 wiring

Claims

1. A laminated glass for a vehicle, comprising an interior glass plate, an exterior glass plate, an interlayer for bonding the interior glass plate and the exterior glass plate, and a light-emitting device sealed in the interlayer,

the light emitting device emits light into the vehicle through the vehicle interior glass panel,

the intermediate film includes a 1 st intermediate film bonded to the vehicle interior glass panel and a 2 nd intermediate film bonded to the vehicle exterior glass panel,

the total visible light transmittance of the members located on the vehicle interior side of the light-emitting device is 50% or less.

2. The laminated glass according to claim 1, wherein the member is the vehicle interior glass sheet and the 1 st intermediate film, the vehicle interior glass sheet has a visible light transmittance of 50% or less, and the 1 st intermediate film has a visible light transmittance of 90% or more.

3. The laminated glass according to claim 1, wherein the member is the vehicle interior glass sheet and the 1 st intermediate film, the vehicle interior glass sheet has a visible light transmittance of 80% or more, and the 1 st intermediate film has a visible light transmittance of 50% or less.

4. The laminated glass according to claim 1, wherein the member is the vehicle interior glass sheet and the 1 st intermediate film, the vehicle interior glass sheet has a visible light transmittance of 50% or less, and the 1 st intermediate film has a visible light transmittance of 50% or less.

5. The laminated glass according to any one of claims 1 to 4, wherein the visible light transmittance of the vehicle exterior glass plate is 50% or less, and the visible light transmittance of the 2 nd intermediate film is 90% or more.

6. The laminated glass according to any one of claims 1 to 4, wherein the visible light transmittance of the vehicle exterior glass plate is 80% or more, and the visible light transmittance of the 2 nd intermediate film is 50% or less.

7. The laminated glass according to any one of claims 1 to 4, wherein the visible light transmittance of the vehicle exterior glass sheet is 50% or less, and the visible light transmittance of the 2 nd intermediate film is 50% or less.

8. The laminated glass according to any one of claims 1 to 7, wherein the light-emitting device uses a light-emitting element as a light source.

9. The laminated glass according to claim 8, wherein the light emitting element is a light emitting diode.

10. The laminated glass according to claim 8 or 9, wherein the light-emitting device comprises a base material, a plurality of the light-emitting elements mounted on the base material, a wiring connected to the plurality of the light-emitting elements, and a bus bar.

11. The laminated glass according to any one of claims 8 to 10, wherein the light-emitting element has a shape of 0.1mm to 3.2mm in length, 0.1mm to 2.0mm in width, and 0.1mm to 1.0mm in height.

12. The laminated glass according to any one of claims 1 to 11, wherein a shielding layer is formed on a peripheral edge portion of a surface on the vehicle interior side of the vehicle interior side glass plate, and at least a part of a peripheral edge portion of the light-emitting device overlaps with the shielding layer in a plan view.

13. The laminated glass according to claim 12, wherein at least a part of a peripheral edge portion of the light-emitting device is located further inside than the shielding layer.

14. The laminated glass according to any one of claims 1 to 13, wherein the vehicle interior glass panel and the vehicle exterior glass panel are curved.