LAMP Russian patent published in 2009 - IPC H05B33/02 F21S4/00 

FIELD: electrical engineering.

SUBSTANCE: invention relates to energy-saving technologies, particularly for saving electrical energy, used for lighting highways, streets, facilities etc. The lamp contains light-emitting-diode groups, connected in series or parallel, or series-parallel, each of which is connected to a pulsed power supply with possibility of soft limiting the heating temperature of light-emitting-diodes, which are part of each of the said groups of light-emitting-diodes. The light-emitting-diodes are mounted on a printed circuit board with a substrate made from glass textolite or aluminium, which is attached to the housing of the lamp by forge rolling or pressing to the surface of the housing of the lamp with edging of the housing, which is made from metal, functioning as radiator housing. The pulsed power supply, mounted on the printed circuit board, contains an electronic self-repairing current protection device, full-wave rectifier, pulse converter for converting voltage to constant current for powering the light-emitting-diode groups. The said pulse converter includes a thermistor based temperature sensor, which heats due to convection currents of air inside the housing, a sensor for automatic on/off switching of the lamp at the onset of darkness/light, and a motion sensor which reacts to movement of objects in the lighting zone of the lamp. The motion sensor is based on CMOS matrices, CCD matrices or infrared rays and is connected to an alternating or direct current supply mains. The motion sensor is electrically connected to the sensor for automatic on/off switching of the lamp, with possibility of controlling operation of the latter.

EFFECT: wider functional capabilities, increased reliability when using the lamp with unstable mains, protection from external effects, improved heat-sinking and increased electricity saving.

8 cl, 1 dwg