Patent ID: 8427059

Claim:
A lighting device comprising: a substrate having a first surface on which a light emitting element is provided and a second surface opposite the first surface; a radiator having one edge side to which the second surface of the substrate is attached; a cover which covers the substrate and is attached to the one edge side of the radiator; a lighting circuit provided on another edge side of the radiator and configured to light the light emitting element; and an air-cooling unit provided between the radiator and the lighting circuit and configured to allow for ventilation of an interior of the radiator, wherein the radiator includes a plurality of ventilation openings including: a suction opening configured to bring air into the interior of the radiator; and an air outlet configured to discharge the air, brought into the interior of the radiator through the suction hole, toward the cover to cause the discharged air to contact a surface of the cover.