LIGHT-EMITTING DIODE LIGHT SOURCE WITH BIOLOGICALLY ADEQUATE RADIATION SPECTRUM Russian patent published in 2019 - IPC F21V9/00 H01L33/50 

FIELD: electrical equipment; electronic equipment.

SUBSTANCE: invention relates to electrical engineering and electronic engineering, more specifically to light sources based on semiconductor light-emitting diodes (LED), even more specifically to sources of white light based on LED with conversion photoluminescent substances. LED white light source with a biologically adequate radiation spectrum includes at least two white light-emitting diodes, arranged on heat-conducting printed circuit board with electrical leads for connection of light-emitting diodes to power supply source, and semitransparent cover arranged above printed-circuit board, wherein each white light-emitting diode comprises in a light-reflecting housing at least one chip with blue radiation, filled with a polymer composition with its own photoluminescent substance or a mixture of photoluminescent substances, wherein at least one light-emitting diode with blue radiation, which is coated with a composite photoluminescent film containing a photoluminescent substance in a transparent base, is additionally placed on the heat-conducting printed circuit board.

EFFECT: technical result consists in reduction of harmful effect of radiation on human body, high reliability and efficiency of light source.

5 cl, 1 tbl, 11 dwg