Phototherapy instruments and devices for medical purposes, namely, a LED (light-emitting diode) light source for medical treatment of the oral cavity; semiconductor or integrated circuit light emitters, namely, lamps and LED devices for treatment of a variety of medical conditions in the oral cavity; light boxes in the nature of lamps and LED devices for treatment of a variety of medical conditions in the oral cavity; controllable light sources and lighting apparatus in the nature of lamps fo...