Headlight assembly for a working vehicle

A headlight assembly for a working vehicle includes a body (16) having a front frame (19), and side frames (20) bent and extending rearward from opposite ends of the front frame, and light source units mounted in a pair of right and left openings (21) formed in the body. The body (16) is an integral unit formed of resin. The light source units include a pair of right and left main bulbs for forward illumination, and reflector units for forwardly reflecting light from the main bulbs. A cover member (18) is provided for covering at least a large part of the body. The cover member (18) includes a pair of right and left lens regions opposed to light radiating planes of the reflector units (32), respectively, a front wall region (33) interconnecting the these lens regions, and side wall regions (34) bent and extending rearward from lateral ends of the lens regions, respectively.