Vehicle light transmission panel

Patent metadata

Field	Value
Publication number	US-2026091728-A1
Application number	US-202519325056-A
Country	US
Kind code	A1
Filing date	Sep 10, 2025
Priority date	Sep 27, 2024
Publication date	Apr 2, 2026
Grant date	—

Abstract

A vehicle light transmission panel to be disposed outward of a light source, constitute a part of a design surface of a vehicle, and transmit visible light emitted from the light source through a plurality of holes formed at the vehicle light transmission panel by laser processing, includes: a base material containing a resin having visible light transmittance; and a decorative layer disposed closer to the design surface than the base material, the plurality of holes penetrate the decorative layer in a thickness direction of the decorative layer, and between the base material and the decorative layer in the thickness direction, a protective layer, that has visible light transmittance and is configured to protect the base material from laser light, is provided.

First claim

What is claimed is:

1 . A vehicle light transmission panel to be disposed outward of a light source, constitute a part of a design surface of a vehicle, and transmit visible light emitted from the light source through a plurality of holes formed at the vehicle light transmission panel by laser processing, the vehicle light transmission panel comprising:
a base material comprising a resin having visible light transmittance; and a decorative layer disposed closer to the design surface than the base material, wherein the plurality of holes penetrate the decorative layer in a thickness direction of the decorative layer, and between the base material and the decorative layer in the thickness direction, a protective layer, that has visible light transmittance and is configured to protect the base material from laser light, is provided.

2 . The vehicle light transmission panel according to claim 1 , wherein
the protective layer comprises a base resin having visible light transmittance and a filler that is dispersed in the base resin and is configured to reflect the laser light.

3 . The vehicle light transmission panel according to claim 1 , wherein
the protective layer comprises a base resin having visible light transmittance and a filler that is dispersed in the base resin and is configured to absorb the laser light, and the filler has higher heat resistance than the base material.

4 . The vehicle light transmission panel according to any one of claim 1 , wherein
the decorative layer comprises a colored layer containing a colorant, and a concealing layer that is laminated on a surface of the colored layer on a side opposite to the design surface and contains a colorant having higher concealing power than the colorant contained in the colored layer.

5 . The vehicle light transmission panel according to any one of claim 2 , wherein
the decorative layer comprises a colored layer containing a colorant, and a concealing layer that is laminated on a surface of the colored layer on a side opposite to the design surface and contains a colorant having higher concealing power than the colorant contained in the colored layer.

6 . The vehicle light transmission panel according to any one of claim 3 , wherein
the decorative layer comprises a colored layer containing a colorant, and a concealing layer that is laminated on a surface of the colored layer on a side opposite to the design surface and contains a colorant having higher concealing power than the colorant contained in the colored layer.

7 . The vehicle light transmission panel according to claim 4 , wherein
the vehicle light transmission panel constitutes a part of a design surface of an outer shell of the vehicle, and the concealing layer has a Martens hardness of 30 N/mm 2 or less.

8 . The vehicle light transmission panel according to claim 5 , wherein
the vehicle light transmission panel constitutes a part of a design surface of an outer shell of the vehicle, and the concealing layer has a Martens hardness of 30 N/mm 2 or less.

9 . The vehicle light transmission panel according to claim 6 , wherein
the vehicle light transmission panel constitutes a part of a design surface of an outer shell of the vehicle, and the concealing layer has a Martens hardness of 30 N/mm 2 or less.

10 . The vehicle light transmission panel according to claim 4 , wherein
the vehicle light transmission panel constitutes a part of a design surface of an outer shell of the vehicle, the vehicle light transmission panel further comprises a second protective layer that is configured to protect the concealing layer and is provided closer to the design surface than the concealing layer, and the second protective layer has a Martens hardness of 30 N/mm 2 or less.

11 . The vehicle light transmission panel according to claim 5 , wherein
the vehicle light transmission panel constitutes a part of a design surface of an outer shell of the vehicle, the vehicle light transmission panel further comprises a second protective layer that is configured to protect the concealing layer and is provided closer to the design surface than the concealing layer, and the second protective layer has a Martens hardness of 30 N/mm 2 or less.

12 . The vehicle light transmission panel according to claim 6 , wherein
the vehicle light transmission panel constitutes a part of a design surface of an outer shell of the vehicle, the vehicle light transmission panel further comprises a second protective layer that is configured to protect the concealing layer and is provided closer to the design surface than the concealing layer, and the second protective layer has a Martens hardness of 30 N/mm 2 or less.

13 . The vehicle light transmission panel according to claim 10 , wherein
the second protective layer is a filling layer that is filled in the plurality of holes, has visible light transmittance and is provided on a side opposite to the base material with the decorative layer interposed in between in the thickness direction, and the filling layer is the second protective layer.

14 . The vehicle light transmission panel according to claim 11 , wherein
the second protective layer is a filling layer that is filled in the plurality of holes, has visible light transmittance and is provided on a side opposite to the base material with the decorative layer interposed in between in the thickness direction, and the filling layer is the second protective layer.

15 . The vehicle light transmission panel according to claim 12 , wherein
the second protective layer is a filling layer that is filled in the plurality of holes, has visible light transmittance and is provided on a side opposite to the base material with the decorative layer interposed in between in the thickness direction, and the filling layer is the second protective layer.

Assignees

• Toyoda Gosei Kk

Inventors

• Okada Masaki
• Ido Takayasu
• Takao Kazuki
• Senda Masaki
• Kumamoto Yasuhisa
• Okumura Koji
• Kuramitsu Yuhki
• Shibakawa Hiroko
• Higuchi Keisuke

Classifications

• G02B1/111

  using layers comprising organic materials · CPC title

• B23K26/57

  the laser beam entering a face of the workpiece from which it is transmitted through the workpiece material to work on a different workpiece face, e.g. for effecting removal, fusion splicing, modifying or reforming · CPC title

• B23K26/40

  taking account of the properties of the material involved · CPC title

• B60Q1/5035 Primary

  electronic displays · CPC title