Abstract: A lighting device including a housing, a coupling member being coupled to an inner upper surface of the housing, having an insertion groove formed in the middle part thereof in a direction of the inner upper surface of the housing, and having a first connection terminal provided in the middle of the insertion groove, at least one reflector coupled between an inner wall surface of the housing and an outer wall surface of the coupling member; and a light source unit having an upper part thereof attachable to and removable from the coupling member by using the insertion groove, having a second connection terminal provided in the upper part thereof, the second connection terminal being electrically connected to the first connection terminal when connected to the coupling member, and having a lower part thereof emitting light toward the reflector.

Abstract: A lighting device includes: a housing, a coupling member, at least one reflector, and a light source unit, wherein the light source unit includes: a first body having a first coupling unit, a first sloping surface, and a first hinge protruding, a second body having a second coupling unit, a second sloping surface, and a second hinge protruding, a middle body having a second insertion groove and having a second connection terminal, the second connection terminal electrically connected to the first connection terminal, when the light source unit is coupled to the coupling member, and a main light emitting diode module disposed on the first sloping surface and the second sloping surface respectively.

Abstract: A lighting device includes a housing, at least one reflector disposed inside the housing; and a light source unit being disposed inside the housing and emitting light toward the reflector, wherein the light source unit includes a light emitting groove formed therein, the light emitting groove including a basal surface sloped toward the reflector, and wherein a plurality of light emitting devices are disposed sloping along the basal surface in the light emitting groove, and wherein the light emitting groove includes a projection part formed from the basal surface, the projection part blocking the light emitted directly from a plurality of the light emitting devices to the outside of the housing.