US 11,912,193 B2
Vehicular illumination device
Shuichi Ishibashi, Makinohara (JP)
Assigned to KOITO MANUFACTURING CO., LTD., Tokyo (JP)
Filed by YAZAKI CORPORATION, Tokyo (JP)
Filed on Aug. 29, 2022, as Appl. No. 17/897,629.
Claims priority of application No. 2021-140306 (JP), filed on Aug. 30, 2021.
Prior Publication US 2023/0061287 A1, Mar. 2, 2023
Int. Cl. B60Q 3/74 (2017.01); F21Y 103/10 (2016.01); F21Y 115/10 (2016.01)
CPC B60Q 3/74 (2017.02) [F21Y 2103/10 (2016.08); F21Y 2115/10 (2016.08)] 13 Claims
OG exemplary drawing
 
1. A vehicular illumination device to be disposed on a ceiling portion in a vehicle passenger compartment, the vehicular illumination device comprising:
a left-row light source unit including a plurality of left-row module regions each having three or more light sources arranged side by side in a front-rear direction of the vehicle, the left-row light source unit being disposed on a left side of a center in a width direction of the vehicle;
a right-row light source unit including a plurality of right-row module regions each having three or more light sources arranged in the front-rear direction of the vehicle, the right-row light source unit being disposed on a right side of the center in the width direction of the vehicle; and
a master control unit configured to give instructions for illuminations to the left-row light source unit and the right-row light source unit to provide hospitality to an occupant of the vehicle by controlling the illuminations of the left-row light source unit and the right-row light source unit, wherein
optical paths of the light sources are set to be placed in a state where a light irradiation region of the left-row light source unit and a light irradiation region of the right-row light source unit partially overlap with each other on a floor surface in the vehicle passenger compartment, and
the master control unit executes a hospitality control to turn on the light sources of the left-row light source unit and the right-row light source unit towards the front-rear direction for each of the left-row module regions and the right-row module regions, from a state where all the light sources of the left-row light source unit and the right-row light source unit are in off-state.