Abstract: An emergency lighting apparatus designed for attachment with respect to a movable environmental structure such as a vertically movable dump body of a truck which is movable between a raised position and a down position wherein the emergency light includes a light shield pivotally movable with respect to the housing of the light responsive to gravitational force exerted therein to continuously shield the light from passing directly downwardly therefrom to prevent excessive glare being experienced by the truck driver when located in an area immediately adjacent to the truck cab. The light shield may include an opaque section to facilitate the light shading and may include an auxiliary weight secured with respect thereto to maintain proper orientation of the light shield with respect to the housing of the light during movement of the dump body of the truck between the raised and down positions.