Automobile laminated glass

Patent metadata

Field	Value
Publication number	US-11964544-B2
Application number	US-201917311230-A
Country	US
Kind code	B2
Filing date	Dec 5, 2019
Priority date	Dec 5, 2018
Publication date	Apr 23, 2024
Grant date	Apr 23, 2024

Abstract

A automobile laminated glass according to the present invention includes: a first glass plate that is formed into a rectangular shape; a second glass plate that is disposed so as to face the first glass plate, and is formed into a rectangular shape; an intermediate film that is disposed between the first glass plate and the second glass plate; a functional layer that is disposed between the first glass plate and the second glass plate; and an obstructing layer that is laminated on a peripheral edge portion of at least one of the first glass plate and the second glass plate, wherein the functional layer is formed so that an outer edge of at least a portion of the functional layer is located outward of an inner edge of the obstructing layer.

First claim

The invention claimed is:

1. An automobile laminated glass comprising:
a first glass plate that is formed into a rectangular shape;
a second glass plate that is disposed so as to face the first glass plate, and is formed into a rectangular shape;
an intermediate film that is disposed between the first glass plate and the second glass plate, and includes a functional layer; and
an obstructing layer that is laminated on a peripheral edge portion of at least one of the first glass plate and the second glass plate,
wherein the functional layer is formed so that an outer edge of at least a portion of the functional layer is located outward of an inner edge of the obstructing layer and the functional layer is configured to thermally shrink when heated at 130° C. for 30 minutes.

2. The automobile laminated glass according to claim 1 ,
wherein the functional layer includes a projection film for a head-up display device, and at least one base film that supports the projection film, and
a portion of the outer edge of the functional layer is formed so as to reach an end edge of the automobile laminated glass.

3. The automobile laminated glass according to claim 1 ,
wherein the functional layer includes a projection film for a head-up display device, and at least one base film that supports the projection film, and
a portion of the outer edge of the functional layer is disposed with a gap from an end edge of the automobile laminated glass.

4. The automobile laminated glass according to claim 1 ,
wherein the functional layer includes a projection film for a head-up display device, and at least one base film that supports the projection film, and
an end edge of the projection film is located inward of an end edge of the base film, with a gap of at least 10 mm from the end edge of the base film.

5. The automobile laminated glass according to claim 1 ,
wherein the second glass plate is located on a vehicle interior-side,
the functional layer includes a projection film and at least one base film that supports the projection film, and
when a distance between the base film and the second glass plate is no greater than 50 μm, an end edge of the projection film is located inward of an end edge of the base film, with a gap of at least 26.8 mm from the end edge of the base film.

6. The automobile laminated glass according to claim 1 ,
wherein the second glass plate is located on a vehicle interior-side,
the functional layer includes a projection film for a head-up display device, and
a visible light transmittance of the second glass plate is greater than a visible light transmittance of the first glass plate.

7. The automobile laminated glass according to claim 1 ,
wherein the second glass plate is located on a vehicle interior-side,
the functional layer includes a projection film for a head-up display device, and
a distance between the projection film and the second glass plate is smaller than a distance between the projection film and the first glass plate.

8. The automobile laminated glass according to claim 1 ,
wherein the obstructing layer is provided with an opening through which light entering an information acquisition device that is provided on a vehicle interior-side passes, and
a distance between the opening and the functional layer is no less than 10 mm.

9. The automobile laminated glass according to claim 8 ,
wherein a distance between the functional layer and either one of the glass plates is no greater than 50 μm, and
a distance between the opening and the functional layer is no less than 26.8 mm.

10. The automobile laminated glass according to claim 8 ,
wherein the functional layer is provided with an projection film for a head-up display device, and
an upper edge of the projection film is located lower than the opening.

11. The automobile laminated glass according to claim 1 ,
wherein the functional layer is provided with an infrared reflective film, and
a distance between the infrared reflective film and the first glass plate is smaller than a distance between the infrared reflective film and the first glass plate.

12. The automobile laminated glass according to claim 1 ,
wherein the intermediate film is provided with
the functional layer, and
at least one adhesion layer for bonding the functional layer to at least one of the glass plates.

13. The automobile laminated glass according to claim 1 ,
wherein the functional layer is formed so that an outer edge of at least a portion of the functional layer is located within a range of 10 mm inward of an outer edge of the automobile laminated glass.

14. The automobile laminated glass according to claim 1 ,
wherein the automobile laminated glass is curved so as to protrude toward the first glass plate side, and
a maximum distance between a virtual line connecting respective midpoints of upper and lower sides of the second glass plate and the second glass plate is no less than 10 mm.

15. The automobile laminated glass according to claim 1 ,
wherein the automobile laminated glass is curved so as to protrude toward the first glass plate side, and
at least one of Formulas (1) and (2) below is satisfied:
r V ×r H ≥r MD ×r TD   (1)

r V ≥0.9990 and r V ≥r TD   (2)

where
O denotes a midpoint of an upper side of the second glass plate,
P denotes a midpoint of a lower side of the second glass plate,
Q denotes a midpoint of a left side of the second glass plate,
R denotes a midpoint of a right side of the second glass plate,
L V denotes a length of a curved line OP that extends along a first surface of the second glass plate on an opposite side of the first glass plate,
I V denotes a length of a straight line OP,
Lh denotes a length of a curved line QR extending along the first surface of the second glass plate,
I H denotes a length of a straight line QR,
rV denotes I V /L V ,
r H denotes I H /L H ,
an MD direction denotes a roll winding direction in which the functional layer is fed out,
a TD direction denotes a direction that is orthogonal to the roll winding direction in which the functional layer is fed out,
r MD denotes a heat shrinkage of the functional layer in the MD direction before and after being heated at 130° C. for 30 minutes,
r TD denote a heat shrinkage of the functional layer in the TD direction before and after being heated at 130° C. for 30 minutes, and
the MD direction of the functional layer coincides with a direction in which the curved line QR extends.

16. The automobile laminated glass according to claim 1 ,
wherein the first glass plate is located on a vehicle exterior-side,
the second glass plate is located on a vehicle interior-side, and
the obstructing layer is laminated on at least one of a vehicle interior-side surface of the first glass plate and a vehicle interior-side surface of the second glass plate.

17. The automobile laminated glass according to claim 1 , wherein the functional layer includes a heat shield film.

18. The automobile laminated glass according to claim 1 , wherein the functional layer includes at least one of a heating element or an antenna element.

19. The automobile laminated glass according to claim 1 ,
wherein the automobile laminated glass is configured so that light emitted from a head-up display device projects information thereto, and
the functional layer includes a projection film to which the information is projected.

Assignees

• Nippon Sheet Glass Co Ltd

Inventors

• Chiba Kazuki
• Ogawa Ryohei
• Ogawa Hisashi
• Asaoka Hisashi

Classifications

• B60K35/10

  Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor · CPC title

• B60K35/23

  Head-up displays [HUD] (optical aspects of head-up displays G02B27/01) · CPC title

• B60K35/60

  Instruments characterised by their location or relative disposition in or on vehicles (arrangements of lighting devices on dashboards B60Q3/10) · CPC title

• B60J1/001 Primary

  Double glazing for vehicles · CPC title

• B32B17/10036

  comprising two outer glass sheets · CPC title