Patent ID: 8585241

Claim:
A power-saving lighting apparatus, comprising: a preexisting upper housing having a plurality of preexisting lamp holders; a preexisting bottom cover arranged below the preexisting upper housing and assembled with the preexisting upper housing, the preexisting bottom cover comprising a frame, a plurality of reflectors assembled with the frame, and a plurality partitions assembled with the reflectors and the frame, wherein each of the reflectors comprises a first edge and a second edge opposite to the first edge, and the first edge is fixed on a surface of the preexisting bottom cover; a retrofit lighting module disposed between the preexisting upper housing and the preexisting bottom cover, wherein the retrofit lighting module is electrically connected with the preexisting lamp holders through a power adapter and only mechanically supported by the second edges edge of the reflectors of the preexisting bottom cover; a plurality of protrusions disposed on a flat surface of the retrofit lighting module, wherein the second edge of the reflectors respectively resists against the protrusions so as to bear the retrofit lighting module and push the retrofit lighting module to contact with the preexisting upper housing, such that the retrofit lighting module is fixed between the preexisting upper housing and the preexisting bottom cover, and the preexisting upper housing and the preexisting bottom cover constitute a casing of a T-bar lighting apparatus; a preexisting rope-shaped first fixing member connecting the preexisting upper housing and the preexisting bottom cover; and a preexisting rope-shaped second fixing member connecting the preexisting upper housing and the retrofit lighting module, wherein the retrofit lighting module will be hanged from the preexisting upper housing in case the retrofit lighting module is not fixed.