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US 11,999,286 B2Granted
Vehicle drawing device
AssigneeKoito Manufacturing Co., Ltd.
InventorYuichi Shibata
Life of this patent
Estimating the term…
Abstract
A vehicle drawing device draws a sign on a road surface with amber-colored light. 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.
Claims7
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.
A vehicle drawing device that draws a sign on a road surface with amber-colored light,
- wherein a maximum luminous intensity in a light distribution pattern of light irradiated from the vehicle drawing device is three times or more of a maximum luminous intensity in a light distribution pattern of light irradiated from a turn signal lamp, 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.
Dependencies are inferred from the claim text.