FIELD: electrical engineering. SUBSTANCE: lighting fixture incorporating magnetron for generating microwave energy, bulb for producing light under action of microwave energy, waveguide interconnecting magnetron and bulb generating light in magnetron, and case accommodating magnetron and waveguide integrated with bulb is provided with cooling system that has heat-transfer apparatus with cooling loop mounted outside of magnetron; radiating module mounted outside of case that radiates heat of cooling agent heated when flowing over loop of heat-transfer apparatus; and flux generating means installed between output of radiating module and input of heat-transfer apparatus to afford cooling agent circulation between heat-transfer apparatus and radiating module. EFFECT: enhanced cooling efficiency. 16 cl, 14 dwg
