Patent ID: 8920004

Claim:
An optical semiconductor illuminating apparatus, comprising: a heat sink comprising a light emitting module disposed on a lower side thereof, the light emitting module comprising at least one semiconductor optical element; a fixed unit disposed at one side of the heat sink and configured to be fixed to a ceiling structure; a power supply disposed on an upper side of the heat sink; and a bracket assembly having the power supply embedded therein and mounted at the upper side of the heat sink, wherein: the bracket assembly comprises: a lower body mounted at the upper side of the heat sink and supporting the power supply; and an upper body, coupled to the lower body, enclosing the power supply over the power supply and coupled to the upper side of the heat sink; the heat sink comprises: a heat radiation plate having the light emitting module disposed on a lower surface thereof; a hole penetrating through the heat radiation plate; and heat radiation fins protruding radially from an upper surface of the heat radiation plate; the lower body electrically connects the power supply and the light emitting module to each other through the hole; and the lower body comprises: a lower case opened at an upper side thereof to allow the power supply to be seated thereon and having the upper body coupled to the upper side thereof; and a tube body extended from a lower surface of the lower case and configured to allow a cable for power connection to pass from the power supply to the light emitting module through the hole.