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CN-122003335-A - Laminated glass for vehicle roof

CN122003335ACN 122003335 ACN122003335 ACN 122003335ACN-122003335-A

Abstract

A laminated glass (10) for a vehicle roof, which is used for at least a part of a roof (2) of a vehicle, is provided with a light adjustment layer (14) which can adjust the light transmittance of light by applying a voltage, an intermediate layer (13) which has insulation properties and is arranged so as to sandwich the light adjustment layer (14), an outer glass plate (12) and an inner glass plate (11) which are a pair of glass plates (11, 12) arranged so as to sandwich the intermediate layer (13), and the laminated glass (10) for a vehicle roof further has a color tone integration layer M which is arranged on the inner side of the light adjustment layer (14) and can realize color tone integration with other glass plates (4 a) arranged on the face of the vehicle connected to the roof (2).

Inventors

  • MIYABE DAISUKE
  • Ryunosuke Kakegawa
  • ISHIKAWA AKIRA
  • ASAOKA HISASHI

Assignees

  • 日本板硝子株式会社

Dates

Publication Date
20260508
Application Date
20240830
Priority Date
20230907

Claims (16)

  1. 1. A laminated glass for a roof of a vehicle, for at least a part of a roof of the vehicle, the laminated glass comprising: A dimming layer that can adjust light transmittance by applying a voltage; an intermediate layer having insulation properties and disposed so as to sandwich the light modulation layer, and An outside glass plate and an inside glass plate, which are a pair of glass plates disposed so as to sandwich the intermediate layer, The laminated glass for a vehicle roof has a tone integration layer which is disposed on the vehicle interior side of the light adjustment layer and which can be tone integrated with another glass plate provided on the face of the vehicle connected to the roof.
  2. 2. The laminated glass for a vehicle roof according to claim 1, wherein the color tone integration layer is constituted by the vehicle interior side glass sheet.
  3. 3. The laminated glass for a vehicle roof according to claim 1 or 2, further comprising an optical adjustment layer that adjusts optical properties.
  4. 4. The laminated glass for a vehicle roof according to claim 3, wherein the optical adjustment layer is configured to adjust at least one of visible light transmittance, brightness, and luminosity.
  5. 5. The laminated glass for a vehicle roof according to claim 3 or 4, wherein the optical adjustment layer is disposed on the outer side of the color tone integration layer.
  6. 6. The laminated glass for a vehicle roof according to any one of claim 3 to 5, The intermediate layer includes: A support substrate disposed on both sides of the light modulation layer and supporting the light modulation layer, and An adhesive layer disposed between the support base and the pair of glass plates, for adhering the support base to the glass plates, The optical adjustment layer is composed of at least one of the light adjustment layer, the support substrate, the adhesive layer, and the vehicle exterior side glass plate.
  7. 7. The laminated glass for a vehicle roof according to any one of claims 3 to 6, wherein the optical adjustment layer is configured to include at least one of a Low-E film and an anti-reflection layer.
  8. 8. The laminated glass for a vehicle roof according to any one of claims 1 to 7, wherein each of the pair of glass plates has an area of 800 mm ×600 mm or more.
  9. 9. The laminated glass for a vehicle roof according to any one of claims 1 to 8, wherein the color tone integration layer is composed of only the vehicle interior side glass sheet, and is formed on CIE L a b In chromaticity represented by the chromaticity diagram, a difference in hue between the hue integration layer and the other glass plate is a Within 5 dimensions, at b The dimension is within 5.
  10. 10. The laminated glass for a vehicle roof according to claim 9, which is laminated glass for a vehicle roof in CIE L a b In chromaticity represented by the chromaticity diagram, a of the tone integration layer B is-10.0 to 6.5 inclusive Is-3.5 to 6.5 inclusive.
  11. 11. The laminated glass for a vehicle roof according to any one of claims 1 to 8, wherein the color tone integration layer is composed of a pair of the glass plates, and is formed in CIE L when the light adjustment layer is in a light transmitting state transmitting visible light a b In chromaticity represented by the chromaticity diagram, a difference in hue between the hue integration layer and the other glass plate is a Within 5 dimensions, at b The dimension is within 5.
  12. 12. The laminated glass for a roof of a vehicle according to claim 11, which is laminated glass for a roof of a vehicle in CIE L a b In chromaticity represented by the chromaticity diagram, a of the tone integration layer B is-10.0 to 6.5 inclusive Is-3.5 to 6.5 inclusive.
  13. 13. The laminated glass for a vehicle roof according to any one of claims 1 to 12, wherein the color tone integration layer is composed of soda lime glass having a total amount of Fe 2 O 3 of 1.2wt% or less and TiO 2 of 0.5wt% or less.
  14. 14. The laminated glass for a vehicle roof according to claim 13, wherein the color tone integration layer is further composed of a soda lime glass having Co 3 O 4 of 100 ppm or less and Se of 5 ppm or less.
  15. 15. The laminated glass for a vehicle roof according to any one of claims 1 to 12, wherein the color tone integration layer is composed of a soda lime glass in which the total amount of Fe 2 O 3 and TiO 2 is 1.0wt% or more and 4.0wt% or less, co 3 O 4 is 500 ppm or less, and Se is 15 ppm or more and 40 ppm or less.
  16. 16. The laminated glass for a vehicle roof according to any one of claim 1 to 15, CIE L is obtained based on the total amount of Fe 2 O 3 , the respective contents of TiO 2 、Co 3 O 4 and Se contained in the color tone integration layer a b Chromaticity represented by chromaticity coordinate graph and a Coloring component functions Fa, and b with correlation The coloring component function Fb with correlation is defined as follows: fa= -3.5 x [ total amount of Fe 2 O 3 (wt%) ] -1.5 x [ TiO 2 (wt%) ] +0.20 x [ Se (ppm) ], and Fb= [ total amount of Fe 2 O 3 (wt%) ] +4× [ TiO 2 （wt％）]-43×10 -4 ×[Co 3 O 4 （ppm）]+0.4×10 -4 × [ Se (ppm) ]; at this time, the tone integration layer is composed of soda lime glass satisfying-9≤Fa≤1 and-5≤Fb≤10.

Description

Laminated glass for vehicle roof Technical Field The present invention relates to a laminated glass for a vehicle roof. Background There is known a light-adjusting laminated glass in window glass of an automobile or a railway, in which a light-adjusting portion capable of changing light transmittance by electric power is sealed in an interlayer film. The light control unit is composed of a light control layer and a pair of conductive layers sandwiching the light control layer. Such a light control laminated glass is to improve privacy of a passenger, and for example, the light control layer scatters light when it is in an off state, and the light control layer is in a frosted glass state, and the light control layer becomes transparent when it is in an on state. As the light modulation layer, for example, a liquid crystal element can be used (for example, see patent document 1). Prior art literature Patent literature Patent document 1 International publication No. 2022/153998 Disclosure of Invention Problems to be solved by the invention Light-regulating laminated glass is used, for example, in the roof of a vehicle. In addition, in a vehicle, for example, privacy glass with gray color may be used in a portion such as a rear glass or a side glass adjacent to a roof. By using privacy glass at a portion such as the rear glass, the privacy of the rear seat occupant can be protected from the outside. In this case, the visible light transmittance of the front windshield is required to reach more than 70% according to the requirements of regulations. Therefore, there is a large difference in visible light transmittance between the vehicle front side and the vehicle rear side of the vehicle interior space, and tone incompatibility is liable to occur. In order to achieve a uniform tone of the vehicle interior space, for example, a dimming function using a dimming laminated glass used for a roof may be considered. However, even if the dimming layer of the roof glass is adjusted to have the same hue as that of the rear glass, there is a difference in hue between the two, and it is therefore difficult to ensure uniform hue in the vehicle interior space. Therefore, there is a need for a laminated glass for a vehicle roof that can achieve color tone integration with other glass disposed adjacent to the roof. Means for solving the problems The laminated glass for a vehicle roof according to the present invention is characterized by comprising a light control layer capable of controlling light transmittance by applying a voltage, an insulating interlayer disposed so as to sandwich the light control layer, an exterior glass plate and an interior glass plate, each of which is a pair of glass plates disposed so as to sandwich the interlayer, and a tone integration layer disposed on the interior of the light control layer and capable of achieving tone integration with other glass plates disposed on the face of a vehicle connected to the roof. According to the present structure, the laminated glass for a vehicle roof has a tone integration layer which is disposed on the vehicle inner side of the light adjustment layer and can realize tone integration with other glass plates provided on the face of the vehicle connected to the roof. Therefore, even if another glass plate provided on the face of the vehicle connected to the roof is a colored glass plate, the color tone integration layer provided in the laminated glass for the roof of the vehicle can integrate the color tone with the other glass plate. As a result, the uniformity of the color tone of the interior space of the vehicle can be ensured easily and appropriately. In another feature, the color tone integration layer is formed of the vehicle interior glass plate. A light-adjusting laminated glass for use in a vehicle comprises a light-adjusting layer capable of adjusting light transmittance by applying a voltage, an intermediate layer having insulation properties disposed so as to sandwich the light-adjusting layer, and an outside glass plate and an inside glass plate, each of which is a pair of glass plates disposed so as to sandwich the intermediate layer. Therefore, as in the present configuration, if the color tone integration layer is formed of the vehicle interior glass sheet, the vehicle roof laminated glass can be formed without adding a member as the color tone integration layer, and the cost, the process, and the like at the time of manufacturing can be reduced. In addition, if the glass plate of the inside glass plate as the tone integrating layer is the same as another glass plate provided on the face of the vehicle connected to the roof, tone integration with another glass is easily achieved, and tone unification of the vehicle interior space is easily ensured. Another feature is that the optical device further comprises an optical adjustment layer for adjusting optical performance. Since the laminated glass for a vehicle roof having the light control layer