Laminated glass

Abstract

This technology helps to suppress the glare from the edges of laminated glass visible from outside the vehicle. [Solution] The laminated glass comprises a first glass plate, an interlayer, and a second glass plate in that order, from the outside of the vehicle to the inside of the vehicle. The interlayer has a first interlayer and a second interlayer in that order, from the outside of the vehicle to the inside of the vehicle. The laminated glass is provided with an LED-equipped film at the interface between the first interlayer and the second interlayer, which consists of an LED that irradiates light toward the outside of the vehicle and a film that supports the LED. At least one of the end faces of the first glass plate and the second glass plate has a chamfered surface and an arithmetic mean roughness of 10 μm or less.

Description

Technical Field

[0001] This disclosure relates to laminated glass.

Background Art

[0002] The laminated glass described in Patent Document 1 has a planar light-emitting device enclosed in an intermediate film. The planar light-emitting device emits light to the outside of the vehicle of the laminated glass. In Patent Document 1, techniques for suppressing light leakage to the inside of the vehicle when the planar light-emitting device emits light are being studied.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Laminated glass having an LED (Light Emitting Diode) inside is being studied. The LED irradiates light, for example, toward the outside of the vehicle. A part of the light of the LED spreads throughout the inside of the laminated glass while undergoing total reflection at the interface between the laminated glass and air. As a result, a part of the light of the LED is scattered at the end face of the laminated glass, and the end face of the laminated glass may appear to shine from the outside of the vehicle.

[0005] One embodiment of this disclosure provides a technique for suppressing the end face of the laminated glass from appearing to shine from the outside of the vehicle.

Means for Solving the Problems

[0006] A laminated glass according to one embodiment of the present disclosure comprises a first glass plate, an interlayer, and a second glass plate in that order, from the outside of the vehicle to the inside of the vehicle. The interlayer has a first interlayer and a second interlayer in that order, from the outside of the vehicle to the inside of the vehicle. The laminated glass includes an LED-equipped film at the interface between the first interlayer and the second interlayer, which comprises an LED that irradiates light toward the outside of the vehicle and a film that supports the LED. At least one of the end faces of the first glass plate and the second glass plate has a chamfered surface and an arithmetic mean roughness of 10 μm or less. [Effects of the Invention]

[0007] According to one embodiment of the present disclosure, it is possible to suppress the appearance of glare from the edge surface of laminated glass when viewed from outside the vehicle. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a cross-sectional view showing laminated glass according to one embodiment. [Figure 2] Figure 2 is a cross-sectional view showing an example of light scattering at the end face of laminated glass. [Figure 3] Figure 3 is a cross-sectional view showing an example of the first light-shielding layer. [Figure 4] Figure 4 is a cross-sectional view showing an example of the second light-shielding layer. [Figure 5] Figure 5 is a cross-sectional view showing another example of the second light-shielding layer. [Figure 6] Figure 6 is a plan view showing an example of a measurement area for the haze of laminated glass. [Figure 7] Figure 7 is a plan view showing an example of a rear window. [Figure 8] Figure 8 is a plan view showing another example of a rear window. [Modes for carrying out the invention]

[0009] The embodiments for implementing this disclosure will be described below with reference to the drawings. In each drawing, identical or similar components will be denoted by the same reference numeral, and their descriptions may be omitted. In the specification, the "~" indicating a numerical range means that the numbers written before and after it are included as the lower and upper limits. The numerical range includes the rounded range.

[0010] Referring to Figure 1, a laminated glass 1 according to one embodiment will be described. The laminated glass 1 comprises a first glass plate 10, a second glass plate 20, and an interlayer 30. The interlayer 30 adheres the first glass plate 10 and the second glass plate 20. The laminated glass 1 is arranged in the order of the first glass plate 10, the interlayer 30, and the second glass plate 20, from the outside of the vehicle towards the inside of the vehicle.

[0011] Laminated glass 1 is in the form of a plate. In Figure 1, laminated glass 1 is flat, but it may also be curved. Laminated glass 1 is used as window glass for a vehicle. As will be described in more detail later, it is preferable that laminated glass 1 is a rear window installed at the rear of the vehicle. The vehicle is typically an automobile, but it may also be a railway vehicle. When laminated glass 1 is used as window glass for an automobile, laminated glass 1 is usually a curved plate that is convex toward the outside of the vehicle.

[0012] The first glass plate 10 is installed on the outside of the vehicle, and the second glass plate 20 is installed on the inside of the vehicle. In Figure 1, the first glass plate 10 and the second glass plate 20 are flat, but they may also be curved. The first glass plate 10 and the second glass plate 20 are trapezoidal in shape when viewed from the outside or inside of the vehicle, but are not particularly limited.

[0013] In this embodiment, the first glass plate 10 and the second glass plate 20 are made of inorganic glass. Inorganic glass has superior scratch resistance compared to organic glass. The first glass plate 10 and the second glass plate 20 may be made of the same inorganic glass or of different inorganic glass. Examples of inorganic glass include soda-lime glass, aluminosilicate glass, borosilicate glass, alkali-free glass, or quartz glass.

[0014] As an example of the inorganic glass, a glass containing, in terms of mol% of oxide conversion, 50 to 80% of SiO2, 0 to 10% of B2O3, 0.1 to 25% of Al2O3, 3 to 30% of Li2O + Na2O + K2O, 0 to 25% of MgO, 0 to 25% of CaO, 0 to 5% of SrO, 0 to 5% of BaO, 0 to 5% of ZrO2 and 0 to 5% of SnO2 can be mentioned, but it is not particularly limited.

[0015] As a method for producing the inorganic glass plate, for example, a float method, a fusion method, a roll-out method, or a down-draw method is used. As a bending method for the inorganic glass plate, gravity forming, press forming, or roller forming is used. The inorganic glass plate is bent at approximately 550°C to 770°C. Further, the inorganic glass plate may be physically strengthened (for example, air-cooled strengthening) or chemically strengthened.

[0016] Incidentally, the first glass plate 10 and the second glass plate 20 may be formed of an organic glass, that is, a resin. As the resin, a polycarbonate resin, an acrylic resin, a polystyrene resin, an aromatic polyester resin, a polyester resin, a polyarylate resin, a polycondensate of halogenated bisphenol A and ethylene glycol, an acrylic urethane resin, or a halogenated aryl group-containing acrylic resin is used. Among these, from the viewpoints of light weight and flexibility, a polycarbonate resin is preferable. Note that two or more types of resins may be used in combination.

[0017] The first glass plate 10 is preferably colorless and transparent in order to efficiently extract the light of the LED 41 described later to the outside of the vehicle. On the other hand, the second glass plate 20 is usually colorless, but may be any one having transparency and may be colored. In the case of being colored, a so-called privacy glass having a dark color such as gray may be used. If the second glass plate 20 is colored, a part of the light of the LED 41 is attenuated while being totally reflected at the interface between the laminated glass 1 and the air and spreading throughout the inside of the laminated glass 1.

[0018] The average value of the thickness t1 of the first glass plate 10 and the average value of the thickness t2 of the second glass plate 20 are not particularly limited, but are preferably 0.5 mm to 3.0 mm. t1 and t2 may vary depending on the location in the laminated glass 1.

[0019] The average value of t1 on the outer side of the vehicle and the average value of t2 on the inner side of the vehicle may be the same or different. In the latter case, the average value of t2 on the inner side of the vehicle is preferably 0.3 mm to 2.3 mm. If the average value of t2 is 0.3 mm or more, the handling performance is good. Also, if the average value of t2 is 2.3 mm or less, the weight reduction of the laminated glass 1 is good.

[0020] Also, if the average value of t2 on the inner side of the vehicle is 0.3 mm to 2.3 mm, the glass quality is good, for example, the residual stress after bending is small. The fact that the average value of t2 is 0.3 mm to 2.3 mm is particularly effective when the radius of curvature of the laminated glass 1 is small. The average value of t2 on the inner side of the vehicle is more preferably 0.5 mm to 2.1 mm, and even more preferably 0.7 mm to 1.9 mm.

[0021] The average value of t1 on the outer side of the vehicle is preferably 1.8 mm to 3.0 mm. When the average value of t1 is 1.8 mm or more, the strength such as the stone impact resistance performance is sufficient. When the average value of t1 is 3.0 mm or less, the weight reduction of the laminated glass 1 is good. The average value of t1 on the outer side of the vehicle is more preferably 1.8 mm to 2.8 mm, and even more preferably 1.8 mm to 2.6 mm.

[0022] <000010�>The first glass plate 10 has a first main surface 11 and a second main surface 12 opposite to the first main surface 11. The second glass plate 20 has a third main surface 21 and a fourth main surface 22 opposite to the third main surface 21. From the outer side of the vehicle toward the inner side of the vehicle, the first main surface 11, the second main surface 12, the third main surface 21, and the fourth main surface 22 are arranged in this order.

[0023] At least one of the first main surface 11, second main surface 12, third main surface 21, and fourth main surface 22 may be provided with a functional film (not shown). The functional film may provide properties such as water repellency, hydrophilicity, or light shielding (e.g., light shielding from visible light, ultraviolet light, or infrared light). Multiple functional films having different functions may be provided. The multiple functional films may be provided in a laminated manner or spaced apart.

[0024] The interlayer 30 adheres the first glass plate 10 and the second glass plate 20. When the first glass plate 10 or the second glass plate 20 breaks, the interlayer 30 suppresses the scattering of glass fragments. The interlayer 30 can be made of any common material and is not particularly limited, but for example, it can be made of polyvinyl butyral (PVB) or ethylene vinyl acetate (EVA).

[0025] The interlayer 30 is usually colorless, but may be transparent or colored. The interlayer 30 may have a colored layer containing a coloring agent. The colored layer is, for example, called a shade band. The coloring agent is not particularly limited, but may be, for example, carbon black. The visible light transmittance Tv of the colored layer is, for example, 1% to 50%, preferably 2% to 30%. In this specification, the visible light transmittance Tv is measured in accordance with JIS R3212:2015.

[0026] The interlayer 30 may contain a coloring agent, an infrared absorber, an ultraviolet absorber, or a light-emitting agent. Of the first interlayer 31 and the second interlayer 32 that make up the interlayer 30, the first interlayer 31, which is on the outside of the vehicle relative to the LED-equipped film 40, preferably contains an ultraviolet absorber. The ultraviolet absorber suppresses the degradation of the LED-equipped film 40 (more specifically the LED 41) due to ultraviolet light.

[0027] The interlayer 30 has a first interlayer 31 and a second interlayer 32 in that order, from the outside of the vehicle to the inside of the vehicle. The first interlayer 31 is preferably a colorless, transparent interlayer in order to efficiently extract the light from the LED 41 to the outside of the vehicle. On the other hand, the second interlayer 32 is preferably a colored interlayer containing a coloring agent so that a portion of the light from the LED 41 is attenuated as it spreads throughout the interior of the laminated glass 1 while undergoing total internal reflection at the interface between the laminated glass 1 and the air. However, the second interlayer 32 may also be a colorless, transparent interlayer.

[0028] The laminated glass 1 includes an LED-equipped film 40 at the interface between the first interlayer 31 and the second interlayer 32. The LED-equipped film 40 is preferably smaller than the first interlayer 31 and the second interlayer 32. The first interlayer 31 and the second interlayer 32 are preferably in contact outside the periphery of the LED-equipped film 40. The LED-equipped film 40 consists of an LED 41, which is a first light source, and a film 42 that supports the LED 41. In this specification, the LED includes an OLED (Organic Light Emitting Diode).

[0029] LED41 emits light outwards from the vehicle. The light emitted by LED41 is visible light. LED41 is, for example, a rear lamp located at the rear of the vehicle. The rear lamp includes, for example, a high-mounted stop lamp 101, a brake lamp 102, a tail lamp 103, and a turn signal 104, as shown in Figures 7 and 8. The high-mounted stop lamp 101, brake lamp 102, and tail lamp 103 are, for example, red, and the turn signal 104 is, for example, orange. The type, position, and color of the rear lamp are not limited to those shown in Figures 7 and 8.

[0030] The film 42 can be any common material for supporting the LED 41, and at the very least, it should be insulating. The material of the film 42 is not particularly limited, but for example, it could be PET (polyethylene terephthalate). An electrical circuit (not shown) is formed on the film 42, and this electrical circuit supplies power to the LED 41.

[0031] The laminated glass 1 preferably has multiple LEDs 41. The multiple LEDs 41 may be supported by multiple different films 42, or by the same single film 42. The multiple LEDs 41 may be used as different rear lamps. It is preferable that the multiple LEDs 41 can be individually switched on and off for each type of rear lamp. Switching between on and off is performed by operating a switch (not shown). The switch is provided inside the vehicle.

[0032] Referring to Figure 2, an example of light scattering at the end face of laminated glass 1 will be described. The end face 3 of laminated glass 1 mainly consists of the end face 13 of the first glass plate 10 and the end face 23 of the second glass plate 20. The end face 13 of the first glass plate 10 and the end face 23 of the second glass plate 20 each have a chamfered surface in order to improve strength.

[0033] The cross-sectional shape of the end faces 13 and 23 is, for example, an arc shape. At least a portion of the end faces 13 and 23 should have a chamfered surface, and the cross-sectional shape of a portion of the end faces 13 and 23 may be straight. The chamfered surface is formed by grinding. Immediately after grinding, the chamfered surface is rough and scatters light.

[0034] LED41 emits light outwards from the vehicle. A portion of the light from LED41 undergoes total internal reflection at the interface between the laminated glass 1 and the air, spreading throughout the interior of the laminated glass 1. As a result, a portion of the light from LED41 reaches the end face 3 of the laminated glass 1. The chamfered surface immediately after grinding is rough and scatters light as shown by the dashed line in Figure 2. Therefore, conventionally, the end face 3 of the laminated glass 1 could sometimes appear to be shining from outside the vehicle.

[0035] At least one of the end faces 13 and 23 preferably has an arithmetic mean roughness Ra of 10 μm or less in order to suppress light scattering, as shown by the dashed line in Figure 2. The arithmetic mean roughness Ra is measured in accordance with JIS B0601:2013. If the arithmetic mean roughness Ra is 10 μm or less, there is little light scattering. Therefore, it is possible to suppress the end face 3 of the laminated glass 1 from appearing reflective from outside the vehicle.

[0036] Polishing the ground surface can reduce the arithmetic mean roughness Ra of the ground surface. From the viewpoint of reducing light scattering, a smaller arithmetic mean roughness Ra is preferable, preferably 10 μm or less, more preferably 8 μm or less, and even more preferably 6 μm or less. From the viewpoint of processing time, the arithmetic mean roughness Ra may be 0.1 μm or more.

[0037] It is preferable that at least the outer end face 13 of the outer end face 13 and the inner end face 23 have an arithmetic mean roughness Ra of 10 μm or less. This is because the outer end face 13 is more visible from outside the vehicle than the inner end face 23. It is more preferable that both the outer end face 13 and the inner end face 23 have an arithmetic mean roughness Ra of 10 μm or less.

[0038] To ensure that the light from the LED 41 is efficiently extracted to the outside of the vehicle, the visible light transmittance Tv of the first glass plate 10 is preferably 80% or more, more preferably 85% or more, even more preferably 90% or more, and particularly preferably 95% or more. The visible light transmittance Tv of the first glass plate 10 is preferable as it is higher, and may be 100% or less.

[0039] The visible light transmittance Tv of the second glass plate 20 is preferably 70% or less, more preferably 60% or less, even more preferably 50% or less, particularly preferably 40% or less, and most preferably 30% or less, so that a portion of the light from the LED 41 is attenuated as it spreads throughout the interior of the laminated glass 1 while undergoing total internal reflection at the interface between the laminated glass 1 and the air. The visible light transmittance Tv of the second glass plate 20 is preferably as low as possible, but may be 3% or more.

[0040] To ensure that the light from the LED 41 is efficiently extracted to the outside of the vehicle, the visible light transmittance Tv of the first interlayer 31 is preferably 80% or more, more preferably 85% or more, even more preferably 90% or more, and particularly preferably 95% or more. The visible light transmittance Tv of the first interlayer 31 is preferable as it is higher, and may be 100% or less.

[0041] The visible light transmittance Tv of the second interlayer 32 is preferably 70% or less, more preferably 60% or less, even more preferably 50% or less, particularly preferably 40% or less, and most preferably 30% or less, so that a portion of the light from the LED 41 is attenuated as it spreads throughout the interior of the laminated glass 1 while undergoing total internal reflection at the interface between the laminated glass 1 and the air. The visible light transmittance Tv of the second interlayer 32 is preferably as low as possible, but may be 3% or more.

[0042] An example of the first light-shielding layer 50 will be described with reference to Figure 3. The laminated glass 1 is provided with the first light-shielding layer 50 on at least one of the end faces 13 of the first glass plate 10 and the end face 23 of the second glass plate 20. The first light-shielding layer 50 blocks the light from the LED 41. Preferably, the first light-shielding layer 50 absorbs the light from the LED 41. Preferably, the first light-shielding layer 50 is black. The first light-shielding layer 50 is, for example, a painted film or a molding. The molding is made of rubber or the like. The molding is used for purposes such as preventing water leakage or for decoration.

[0043] The first light-shielding layer 50 blocks the light from the LED 41, thereby suppressing the appearance of light from the end face 3 of the laminated glass 1 from outside the vehicle. Furthermore, if the laminated glass 1 is equipped with the first light-shielding layer 50, at least one of the end faces 13 and 23 may or may not have an arithmetic mean roughness Ra of 10 μm or less.

[0044] The first light-shielding layer 50 is preferably provided on at least the outer end face 13 of the outer end face 13 and the inner end face 23 of the vehicle. This is because the outer end face 13 is more visible from outside the vehicle than the inner end face 23. It is more preferable to provide the first light-shielding layer 50 on both the outer end face 13 and the inner end face 23, and it is particularly preferable to provide it on the end face 33 of the interlayer 30.

[0045] The first light-shielding layer 50 may be provided on at least a portion of the periphery of the laminated glass 1 as viewed from outside the vehicle. However, it is preferable that the first light-shielding layer 50 be provided on the entire periphery of the laminated glass 1 as viewed from outside the vehicle. In other words, it is preferable that the first light-shielding layer 50 be provided in a frame shape.

[0046] An example of the second light-shielding layer 60 will be described with reference to Figure 4. The laminated glass 1 is provided with the second light-shielding layer 60 on at least one of the peripheral edges of the second main surface 12 and the fourth main surface 22. The second light-shielding layer 60 blocks the light from the LED 41. Preferably, the second light-shielding layer 60 absorbs the light from the LED 41. The second light-shielding layer 60 is, for example, a black ceramic layer. The second light-shielding layer 60 is formed, for example, by sintering black ceramic powder during the bending process of the first glass plate 10 or the second glass plate 20.

[0047] As a portion of the light from the LED 41 spreads throughout the interior of the laminated glass 1 while undergoing total internal reflection at the interface between the laminated glass 1 and the air, the second light-shielding layer 60 absorbs the light from the LED 41. The light from the LED 41 is attenuated before it reaches the end face 3 of the laminated glass 1, and the end face 3 of the laminated glass 1 does not appear to be shining from outside the vehicle.

[0048] Furthermore, if the laminated glass 1 includes a second light-shielding layer 60, at least one of the end faces 13 and 23 may or may not have an arithmetic mean roughness Ra of 10 μm or less. Also, if the laminated glass 1 includes a second light-shielding layer 60, it may or may not have a first light-shielding layer 50.

[0049] It is preferable that the second light-shielding layer 60 be provided on at least the peripheral edge of the second main surface 12 on the outside of the vehicle, compared to the peripheral edge of the fourth main surface 22. This is because the outer end face 13 is more visible from outside the vehicle than the inner end face 23. It is even more preferable that the second light-shielding layer 60 be provided on both the peripheral edge of the second main surface 12 and the peripheral edge of the fourth main surface 22.

[0050] The second light-shielding layer 60 may be provided on at least a portion of the periphery of the laminated glass 1 as viewed from outside the vehicle. However, it is preferable that the second light-shielding layer 60 be provided on the entire periphery of the laminated glass 1 as viewed from outside the vehicle. In other words, it is preferable that the second light-shielding layer 60 be provided in a frame shape as shown in Figures 7 and 8.

[0051] Referring to Figure 5, another example of the second light-shielding layer 60 will be described. As shown in Figure 5, the first glass plate 10 is larger than the second glass plate 20 and the interlayer 30, and the second light-shielding layer 60 is provided at least on the periphery of the second main surface 12 and hides the end face 23 of the second glass plate 20 when viewed from outside the vehicle. This suppresses the end face 23 of the second glass plate 20 from being visible as luminous from outside the vehicle. In addition, the number of times the light from the LED 41 hits the second light-shielding layer 60 before reaching the end face 13 of the first glass plate 10 can be increased, thereby suppressing the end face 13 of the first glass plate 10 from being visible as luminous from outside the vehicle.

[0052] Referring to Figure 6, an example of the measurement area for the haze of laminated glass 1 is described. The haze of laminated glass 1 is measured in the vicinity of LED 41. The measurement area A may be within 10 mm of LED 41. The haze is the percentage of the diffuse light transmittance Td to the total light transmittance Tt (Td / Tt × 100). Tt is the transmittance of light including both the parallel and diffuse components. Td is the transmittance of the diffuse component excluding the parallel component. The diffuse component is the component that has deviated by 2.5° or more from the incident light due to forward scattering. The haze is measured in accordance with JIS K7136:2000.

[0053] If the haze of the laminated glass 1 near the LED 41 is 10% or less, the blurring of the rear lamp as seen from outside the vehicle is reduced, and the visibility of the rear lamp as seen from outside the vehicle is good. The haze of the laminated glass 1 near the LED 41 is preferably 10% or less, more preferably 8% or less, and even more preferably 5% or less. The smaller the haze of the laminated glass 1 near the LED 41, the better, and it may be 0% or more.

[0054] A method for manufacturing the laminated glass 1 shown in Figure 1 will be described below. The method for manufacturing the laminated glass 1 includes, for example, the following steps (A) to (C). (A) The first glass plate 10, the first interlayer 31, the LED-equipped film 40, the second interlayer 32, and the second glass plate 20 are stacked in this order to create a laminate. The second light-shielding layer 60 is formed in advance on at least one of the first glass plate 10 and the second glass plate 20.

[0055] (B) The laminate is placed inside a rubber bag, and the rubber bag is heated while the pressure inside the bag is reduced, bonding the first glass plate 10 and the second glass plate 20 with the interlayer film 30. The pressure inside the rubber bag is, for example, -100kPa to -65kPa, relative to atmospheric pressure. The heating temperature of the rubber bag is, for example, 70°C to 110°C.

[0056] (C) The laminate removed from the rubber bag is heated at 100°C to 150°C and pressed together under pressure of 0.6 MPa to 1.3 MPa. An autoclave, for example, is used for pressing. After that, the first light-shielding layer 50 may be formed on at least one of the end faces 13 of the first glass plate 10 and the end face 23 of the second glass plate 20.

[0057] The following additional information is disclosed regarding the above embodiments, etc. [Note 1] Laminated glass comprising a first glass plate, an interlayer, and a second glass plate in that order, from the outside to the inside of the vehicle. The aforementioned interlayer has a first interlayer and a second interlayer in this order, from the outside of the vehicle towards the inside of the vehicle. The laminated glass is provided with an LED-equipped film at the interface between the first interlayer and the second interlayer, which consists of an LED that emits light toward the outside of the vehicle and a film that supports the LED. Laminated glass in which at least one of the end faces of the first glass plate and the second glass plate has a chamfered surface and an arithmetic mean roughness of 10 μm or less. [Note 2] The laminated glass according to Appendix 1, wherein both the end face of the first glass plate and the end face of the second glass plate have a chamfered surface and have an arithmetic mean roughness of 10 μm or less. [Note 3] The laminated glass according to Appendix 1 or 2, wherein at least one of the end faces of the first glass plate and the end face of the second glass plate is provided with a first light-shielding layer that blocks the light. [Note 4] Laminated glass comprising a first glass plate, an interlayer, and a second glass plate in that order, from the outside to the inside of the vehicle. The aforementioned interlayer has a first interlayer and a second interlayer in this order, from the outside of the vehicle towards the inside of the vehicle. The laminated glass is provided with an LED-equipped film at the interface between the first interlayer and the second interlayer, which consists of an LED that emits light toward the outside of the vehicle and a film that supports the LED. The laminated glass comprises a first light-shielding layer that blocks light on at least one of the end faces of the first glass plate and the end face of the second glass plate. [Note 5] The laminated glass described in Appendix 4, wherein the first light-shielding layer is provided on both the end face of the first glass plate and the end face of the second glass plate. [Note 6] The first glass plate has a first main surface and a second main surface facing the opposite direction to the first main surface, and the second glass plate has a third main surface and a fourth main surface facing the opposite direction to the third main surface, and the first main surface, second main surface, third main surface, and fourth main surface are arranged in this order from the outside of the vehicle to the inside of the vehicle. The laminated glass according to any one of the appendices 1 to 5, wherein the laminated glass is provided with a second light-shielding layer that blocks the light on at least one of the peripheral edges of the second main surface and the peripheral edges of the fourth main surface. [Note 7] The laminated glass according to Appendix 6, wherein the second light-shielding layer is provided on both the peripheral edge of the second main surface and the peripheral edge of the fourth main surface. [Note 8] The laminated glass according to Appendix 6 or 7, wherein the first glass plate is larger than the second glass plate and the interlayer, and the second light-shielding layer is provided at least on the periphery of the second main surface and conceals the end face of the second glass plate when viewed from outside the vehicle. [Note 9] Laminated glass as described in any one of the appendices 1 to 8, wherein the visible light transmittance Tv of the first glass plate is 80% or more, and the visible light transmittance Tv of the second glass plate is 70% or less. [Note 10] Laminated glass according to any one of the appendices 1 to 9, wherein the visible light transmittance Tv of the first interlayer is 80% or more, and the visible light transmittance Tv of the second interlayer is 70% or less. [Note 11] The laminated glass according to any one of the appendices 1 to 10, wherein the haze of the laminated glass in the vicinity of the LED is 10% or less. [Note 12] The laminated glass is a rear window installed at the rear of the vehicle, as described in any one of the appendices 1 to 11. [Note 13] The aforementioned LED is a rear lamp provided at the rear of the vehicle, made of laminated glass as described in Appendix 12.

[0058] The laminated glass described above is not limited to the embodiments described herein. Various changes, modifications, substitutions, additions, deletions, and combinations are possible within the scope of the claims. These also naturally fall within the technical scope of this disclosure. [Explanation of Symbols]

[0059] 1. Laminated glass 3 End face 10. First glass plate 13 End face 20. Second glass plate 23 End face 30 Interlayer 31. First Interlayer 32. Second Interlayer 40 LED-equipped film 41 LED 42 film

Claims

1. Laminated glass comprising a first glass plate, an interlayer, and a second glass plate in this order, from the outside to the inside of the vehicle. The aforementioned interlayer has a first interlayer and a second interlayer in this order, from the outside of the vehicle towards the inside of the vehicle. The laminated glass is provided with an LED-equipped film at the interface between the first interlayer and the second interlayer, which consists of an LED that emits light toward the outside of the vehicle and a film that supports the LED. Laminated glass in which at least one of the end faces of the first glass plate and the second glass plate has a chamfered surface and an arithmetic mean roughness of 10 μm or less.

2. The laminated glass according to claim 1, wherein both the end face of the first glass plate and the end face of the second glass plate have a chamfered surface and have an arithmetic mean roughness of 10 μm or less.

3. The laminated glass according to claim 1 or 2, wherein at least one of the end faces of the first glass plate and the end face of the second glass plate is provided with a first light-shielding layer that blocks the light.

4. Laminated glass comprising a first glass plate, an interlayer, and a second glass plate in this order, from the outside to the inside of the vehicle. The aforementioned interlayer has a first interlayer and a second interlayer in this order, from the outside of the vehicle towards the inside of the vehicle. The laminated glass is provided with an LED-equipped film at the interface between the first interlayer and the second interlayer, which consists of an LED that emits light toward the outside of the vehicle and a film that supports the LED. The laminated glass is provided with a first light-shielding layer that blocks light on at least one of the end faces of the first glass plate and the end face of the second glass plate.

5. The laminated glass according to claim 4, wherein the first light-shielding layer is provided on both the end face of the first glass plate and the end face of the second glass plate.

6. The first glass plate has a first main surface and a second main surface facing the opposite direction to the first main surface, and the second glass plate has a third main surface and a fourth main surface facing the opposite direction to the third main surface, and the first main surface, second main surface, third main surface, and fourth main surface are arranged in this order from the outside of the vehicle to the inside of the vehicle. The laminated glass according to claim 1, 2, 4, or 5, wherein the laminated glass is provided with a second light-shielding layer that blocks light on at least one of the peripheral edges of the second main surface and the peripheral edges of the fourth main surface.

7. The laminated glass according to claim 6, wherein the second light-shielding layer is provided on both the peripheral edge of the second main surface and the peripheral edge of the fourth main surface.

8. The laminated glass according to claim 6, wherein the first glass plate is larger than the second glass plate and the interlayer, and the second light-shielding layer is provided at least on the periphery of the second main surface and conceals the end face of the second glass plate when viewed from outside the vehicle.

9. The laminated glass according to claim 1, 2, 4, or 5, wherein the visible light transmittance Tv of the first glass plate is 80% or more, and the visible light transmittance Tv of the second glass plate is 70% or less.

10. The laminated glass according to claim 1, 2, 4, or 5, wherein the visible light transmittance Tv of the first interlayer is 80% or more, and the visible light transmittance Tv of the second interlayer is 70% or less.

11. The laminated glass according to claim 1, 2, 4, or 5, wherein the haze of the laminated glass in the vicinity of the LED is 10% or less.

12. The laminated glass according to claim 1, 2, 4, or 5, wherein the laminated glass is a rear window provided at the rear of a vehicle.

13. The laminated glass according to claim 12, wherein the LED is a rear lamp provided at the rear of the vehicle.

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