US 12,420,702 B2
Vehicle projection device, control method therefor, and vehicle lamp
Yasufumi Suzuki, Isehara (JP)
Assigned to Ichikoh Industries, Ltd., Isehara (JP)
Appl. No. 18/260,286
Filed by Ichikoh Industries, Ltd., Isehara (JP)
PCT Filed Jan. 6, 2022, PCT No. PCT/JP2022/000272
§ 371(c)(1), (2) Date Jul. 3, 2023,
PCT Pub. No. WO2022/149600, PCT Pub. Date Jul. 14, 2022.
Claims priority of application No. 2021-001689 (JP), filed on Jan. 7, 2021; and application No. 2021-214893 (JP), filed on Dec. 28, 2021.
Prior Publication US 2024/0059214 A1, Feb. 22, 2024
Int. Cl. B60Q 1/46 (2006.01); B60Q 1/34 (2006.01); F21S 43/20 (2018.01); F21W 103/20 (2018.01); F21W 103/30 (2018.01); F21W 103/60 (2018.01); H05B 47/16 (2020.01)
CPC B60Q 1/46 (2013.01) [B60Q 1/346 (2013.01); H05B 47/16 (2020.01); F21S 43/26 (2018.01); F21W 2103/20 (2018.01); F21W 2103/30 (2018.01); F21W 2103/60 (2018.01)] 17 Claims
OG exemplary drawing
 
1. A vehicle projection device comprising:
a projection unit that includes a light source and projects a predetermined image onto a road surface based on lighting of the light source; and
a lighting control unit that performs lighting control of at least the light source of the projection unit, wherein:
the lighting control unit performs the lighting control of the light source of the projection unit such that a required time period from a first time point at which the light source of the projection unit starts lighting in response to an input of a turn signal or a hazard signal to a second time point at which the light source of the projection unit reaches a target light intensity ends later than a third time point at which a turn lamp or a hazard lamp is lit at a target light intensity of the turn lamp or the hazard lamp in response to the input of the turn signal or the hazard signal, and
the lighting control unit performs the lighting control of the light source such that the required time period is shortened as a speed of an own vehicle increases.