US 11,999,286 B2
Vehicle drawing device
Yuichi Shibata, Shizuoka (JP)
Assigned to KOITO MANUFACTURING CO., LTD., Tokyo (JP)
Appl. No. 17/640,436
Filed by KOITO MANUFACTURING CO., LTD., Tokyo (JP)
PCT Filed Aug. 11, 2020, PCT No. PCT/JP2020/030562
§ 371(c)(1), (2) Date Mar. 4, 2022,
PCT Pub. No. WO2021/049232, PCT Pub. Date Mar. 18, 2021.
Claims priority of application No. 2019-163835 (JP), filed on Sep. 9, 2019.
Prior Publication US 2022/0341560 A1, Oct. 27, 2022
Int. Cl. B60Q 1/38 (2006.01)
CPC B60Q 1/38 (2013.01) [B60Q 1/381 (2022.05); B60Q 2400/50 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A vehicle drawing device that draws a sign on a road surface with amber-colored light,
wherein, when a luminance of the sign is assumed as a road surface drawing luminance, and a luminance in a surrounding environment of a driving vehicle is assumed as a background luminance, the amber-colored light is irradiated such that a luminance contrast calculated by the road surface drawing luminance and the background luminance is 0.2 or more, and
wherein an angle formed by an inclination direction at a tip end of the sign with respect to an irradiation direction of the amber-colored light is less than 120 degrees.