Patent attributes
An on-board display device installable in a vehicle cabin of a vehicle includes a liquid crystal panel and a light source. The liquid crystal panel displays an image of an outside of the vehicle, the image having been captured by a camera. The light source illuminates the liquid crystal panel. A direction of maximum luminance of the light source is a direction passing through an inside of an eye range preset in the vehicle. An equi-luminance line has a shape longer in a second direction that intersects a first direction than in the first direction in a luminance distribution map that represents luminance of the light source in each direction represented by a polar angle and an azimuth angle. The second direction and a longitudinal direction of an aggregate of points which represent polar angles and azimuth angles of tangential lines of the eye range, the tangential lines passing through the center of the liquid crystal panel, on the luminance distribution map are inclined to a same side with respect to a longitudinal direction of the liquid crystal panel.
