An illumination device for providing synchronous forward and backward lighting is disclosed. The illumination device includes a light housing of a predetermined shape and an illumination light source provided in the light housing. Also provided in the light housing is a reflector having a front section and a rear section, each of which sections forms a flared reflective area. Light emitted by the illumination light source in the light housing is reflected by the reflective areas of the front and rear sections of the reflector and hence directed both forward and backward, so as for the illumination device to provide wide-range lighting when in use.