Laminated glass

Patent metadata

Field	Value
Publication number	US-12330481-B2
Application number	US-202117911108-A
Country	US
Kind code	B2
Filing date	Mar 12, 2021
Priority date	Mar 13, 2020
Publication date	Jun 17, 2025
Grant date	Jun 17, 2025

Abstract

The present invention is a windshield on which an information acquisition device that acquires information from outside of a vehicle by emitting and/or receiving light can be arranged, the windshield including: an outer glass plate; an inner glass plate; an interlayer film arranged between the outer glass plate and the inner glass plate; and a mask layer laminated on at least one of a surface on a vehicle interior side of the outer glass plate and a surface on a vehicle exterior side of the inner glass plate, in which the interlayer film includes a colored shade region, a transparent non-shade region, and a transparent sheet member that is fitted into at least one through hole formed over the shade region and the non-shade region.

First claim

The invention claimed is:

1. A laminated glass on which an information acquisition device for acquiring information from outside of a vehicle by emitting and/or receiving light is arrangeable, the laminated glass comprising:
an outer glass plate;
an inner glass plate;
an interlayer film arranged between the outer glass plate and the inner glass plate; and
a mask layer laminated on at least one of a surface on a vehicle interior side of the outer glass plate or a surface on a vehicle interior side of the inner glass plate,
wherein the interlayer film includes:
a colored shade region;
a transparent non-shade region; and
a transparent sheet member fitted into at least one through hole formed over the shade region and the non-shade region,

the mask layer includes at least one opening that is formed on an inner side relative to an edge portion of the sheet member at a position corresponding to the sheet member,
the light of the information acquisition device passes through the opening,
when a thickness between an outer surface of the outer glass plate and an inner surface of the inner glass plate at a central point of the sheet member is defined as H1, a thickness between the outer surface of the outer glass plate and the inner surface of the inner glass plate at a point that is 400 mm away from the edge portion of the sheet member on a virtual line extending in a horizontal direction through the central point is defined as H2, and
any point A on an inner edge of the opening, a point B that is the shortest distance from the point A on an outer edge of the sheet member, and a point C at which a virtual line extending from the point A through the point B and an outer edge of the mask layer intersect each other,
a distance between the point A and the point B is defined as S1, and a distance between the point B and the point C is defined as S2,
when H1 is greater than H2, S1 is smaller than S2 at a location where S1+S2 is minimized,
when H1 is less than H2, S1 is greater than S2 at a location where S1+S2 is minimized, and
|H1-H2|≥120 μm.

2. The laminated glass according to claim 1 , wherein when H1 is greater than H2, the distance S2 is 5 to 50 mm.

3. The laminated glass according to claim 1 , wherein when H1 is less than H2, the distance S1 is 5 to 50 mm.

4. The laminated glass according to claim 2 , wherein S1+S2 is 100 mm or less.

5. The laminated glass according to claim 1 , wherein
a plurality of the openings is formed, and
when the shortest distance between the openings that are adjacent to each other is smaller than the sum of the S2 of the openings, the sheet members corresponding to the openings are formed integrally with each other.

6. The laminated glass according to claim 1 , wherein
a mask material forming the mask layer and the glass plate have different thermal expansion rates,
the glass plate and the mask layer are formed by being heated together,
an opening peripheral edge region in which a percentage by which the mask layer is arranged per unit surface area is low is formed in at least a partial region along an inner peripheral edge of the opening of the mask layer, and
the light passes through a region on an inner side relative to the opening peripheral edge region.

7. The laminated glass according to claim 6 , wherein the opening peripheral edge region is formed over the entirety of the inner peripheral edge of the opening.

8. The laminated glass according to claim 6 , wherein
an inner portion of the opening peripheral edge region of the laminated glass is constituted by a distortion region along an inner peripheral edge of the opening peripheral edge region and a central region adjacent to an inner side of the distortion region, and
the light passes through all or a portion of the central region.

9. The laminated glass according to claim 6 , wherein
the opening peripheral edge region includes a plurality of mask pieces made of the mask material, and
the plurality of mask pieces is arranged at intervals from each other.

10. The laminated glass according to claim 9 , wherein each mask piece is formed in a circular shape.

11. The laminated glass according to claim 6 , wherein an electromagnetic wave blocking film is formed in at least a portion of the region where the information acquisition device is attached in the mask layer, the opening peripheral edge region, and the distortion region.

12. The laminated glass according to claim 11 , wherein at least a portion of the mask layer, the opening peripheral edge region, and the distortion region is formed by arranging a first field-of-view blocking film, the electromagnetic wave blocking film, and a second field-of-view blocking film in the stated order from a vehicle exterior side to a vehicle interior side.

13. The laminated glass according to claim 1 , wherein the sheet member is larger than a square with 100 mm sides, and is smaller than a square with 300 mm sides.

14. The laminated glass according to claim 1 , wherein the interlayer film is constituted by a plurality of layers.

15. The laminated glass according to claim 14 , wherein
the interlayer film includes at least a core layer and a pair of outer layers sandwiching the core layer, and
the Young's modulus of the core layer is 20 MPa or less at 20° C. and 100 Hz.

16. The laminated glass according to claim 1 , wherein two to four of the through holes are formed, and the sheet member is fitted into each of the through holes.

17. The laminated glass according to claim 1 , wherein a cross-section taken in a vertical direction is formed in a wedge shape.

18. The laminated glass according to claim 1 , wherein the thickness of the outer glass plate is less than the thickness of the inner glass plate.

19. The laminated glass according to claim 1 , which is used as a windshield.

20. The laminated glass according to claim 1 , which is used as a rear glass.

21. The laminated glass according to claim 1 , wherein the thickness of the transparent sheet member is different from the depth of the through hole of the interlayer film.

22. The laminated glass according to claim 1 , wherein |H1-H2|<300 μm.

Assignees

• Nippon Sheet Glass Co Ltd

Inventors

• Chiba Kazuki
• Ogawa Hisashi
• Asaoka Hisashi

Classifications

• B60J3/007

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