PURPOSE: To prevent occurrence of a double image even if a light passage length stays short, without using an optical system or the like, by making a parallax between the 1st light ray which is reflected at the 1st field surface on the operation side of a reflecting member and the 2nd light ray which is reflected at the 2nd field surface within the reflecting member and heads for a visual point position, small by making the refractive index of the reflecting member high.

CONSTITUTION: A display image is recognized by eyes, as the light of display from an indicator is reflected respectively at the 1st field surface 2A and the 2nd field surface 2B of a reflecting member 2 to an operation seat side, At this instance, on account of the refractive index of the reflecting member 2 being high, the angle of the 2nd light ray L2 within this reflecting member 2 becomes small, and the 2nd light ray L2 emitted after refraction at the 1st field surface 2A, agrees with the 1st light ray L1 heading for a visual point position 4 after reflection at the 1st field surface 2A. As a result, a parallax between the 1st light ray L1 and the 2nd light ray L2 can be made smaller than the resolving power of eyes.