HEAD OF HAND ELECTRIC LIGHT Russian patent published in 1999 - IPC

FIELD: lighting engineering. SUBSTANCE: diameter of the reflector hole exceeds the lamp diameter, the external surface of the reflector is furnished with turning steps, and the end rim has shoulders placed in internal horizontal ducts of the protective glass fastening nut through internal vertical ducts; the walls of the internal horizontal ducts of the nut are installed at an angle to the plane of the internal end rim, and the width of the housing male thread at its front end. The surface shape of the nut female thread does not fully repeat the surface shape of the male thread of this housing when the housing and nut are made of plastic; the housing has a latch. EFFECT: reduced labour content of assembly and focusing, reduced cost of hand light. 5 dwg