US 12,459,425 B2
Projection device for vehicle, method of operating same, and light fixture for vehicle
Yuichiro Washi, Isehara (JP); and Hideto Kurimoto, Isehara (JP)
Assigned to Ichikoh Industries, Ltd., Isehara (JP)
Appl. No. 18/564,023
Filed by Ichikoh Industries, Ltd., Isehara (JP)
PCT Filed May 16, 2022, PCT No. PCT/JP2022/020356
§ 371(c)(1), (2) Date Nov. 24, 2023,
PCT Pub. No. WO2022/249912, PCT Pub. Date Dec. 1, 2022.
Claims priority of application No. 2021-089595 (JP), filed on May 27, 2021.
Prior Publication US 2024/0253558 A1, Aug. 1, 2024
Int. Cl. B60Q 1/34 (2006.01); B60Q 1/46 (2006.01); F21S 41/265 (2018.01); F21S 41/40 (2018.01); F21S 43/20 (2018.01); H05B 47/16 (2020.01)
CPC B60Q 1/34 (2013.01) [B60Q 1/46 (2013.01); F21S 41/265 (2018.01); F21S 41/40 (2018.01); F21S 43/26421 (2024.05); H05B 47/16 (2020.01)] 15 Claims
OG exemplary drawing
 
1. A projection apparatus for a vehicle comprising,
a projection unit having at least M light sources (where M represents a natural number greater than or equal to 2) and for projecting at least N individual images (N represents a natural number of 2 or more) onto a road surface along a predetermined direction based on the lighting of the light sources; and
a control unit for controlling the at least M light sources so that, in a predetermined period of at least P milliseconds (where P represents a real number of 200 or more), the projection of the at least N individual images onto the road surface starts in a predetermined order from a start point of the predetermined period, all of the at least N individual images are projected onto the road surface at an intermediate point of the predetermined period, and the projection of the at least N individual images onto the road surface ends at an end point of the predetermined period, wherein:
the control unit is configured to control the at least M light sources so that the projection of the second projected image in the at least N individual images is started at a second time point after a first time point in which a period of P/N milliseconds has elapsed from a projection start time point of the first projected image in the at least N individual images.