A device for installation in proximity to the windshield of a motor vehicle for reducing glare caused by sunlight reflected from parts of the motor vehicle in the daylight as well as the glare caused by headlights of oncoming vehicles after dark, including a selectively controllable artificial light source and a distributor for the light rays emanating therefrom, the distributor including a colored translucent surface through which the light rays are directed over the surface of the windshield from the interior thereof. According to an alternative embodiment of the present invention, the artificial light source may be connected to a voltage source through the foot-operated switch normally provided for adjusting the beam of the headlights.