An illumination device, provided with: a front predetermined range illumination unit capable of illuminating a predetermined range by illumination light emitted from a moving body; and a line-of-sight direction detection unit for detecting the orientation of the line-of-sight and/or the orientation of the face of the operator of the moving body. The front predetermined range illumination unit controls the light distribution of the illumination light or the lighting of the illumination light on the basis of the orientation of the line-of-sight and/or the orientation of the face of the operator detected by the line-of-sight direction detection unit.