Patent ID: 8827490

Claim:
A lighting apparatus, comprising: a plurality of LED modules; and a power supply connected to the plurality of LED modules, electrically; and a frame having the plurality of LED modules provided therein, wherein each of the plurality of LED modules includes a case, a substrate disposed in the case, an LED mounted to the substrate, a reflective member provided in the case, and a diffusing member detachably mounted to the case, and wherein the frame has a prescribed shape, wherein when the frame is square, an M*M (M>1) number of LED modules are provided in the frame at fixed intervals, where M is a natural number, and when the frame is not square, an N*K (N≠K) number of LED modules are provided in the frame at fixed intervals, where N and K are natural numbers, wherein the frame is a plate having a plurality of openings, wherein each case is positioned with respect to one of the plurality of openings such that light from the respective LED is emitted through the respective opening, wherein the case has a recessed shape having a cross sectional area which decreases as the case extends toward a bottom surface thereof on which the substrate is positioned, wherein the diffusing member is disposed in a space between the respective LED and the respective opening, wherein the reflective member is disposed between the respective LED and the respective diffusing member, wherein at least one projection is provided at one or more edges of the diffusing member, wherein at least one groove is provided inside the case for placing the respective projection therein, and wherein a gap between the substrate and the diffusing member is shorter than a gap between the diffusing member and the respective opening of the frame.