Patent ID: 11865904
Assignee: YOUNG SUNG GEUM
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 1:
2. The automatic light blocking device of claim 1, wherein the at least one sliding groove comprises at least a first sliding groove and a second sliding groove among
the first sliding groove provided adjacent to the ceiling or roof of the vehicle and open in a first direction;
the second sliding groove stacked above the first sliding groove to be separate therefrom and open in a second direction opposite to the first direction or crossing the first direction;
a third sliding groove stacked above the second sliding groove to be separate therefrom and open in a third direction opposite to the second direction or crossing the second direction; and
a fourth sliding groove stacked above the third sliding groove to be separate therefrom and open in a fourth direction opposite to the third direction or crossing the third direction.