Abstract: A lighting apparatus includes a light passing cover, a rim structure and a pressing structure. The light passing cover has a peripheral edge, a central part and a reverse curve surface. The reverse curve surface is extended from the peripheral edge. The central part allowing a light source to emit a light to pass through. The rim structure has a socket, a peripheral wall, and a bottom edge. The pressing structure is made of an elastic strip bent to form a top portion, a middle portion and a root portion. The root portion is kept in the socket. The middle portion presses the reverse curve surface of the light passing cover with an elastic force of the elastic strip to keep the light passing cover staying between the middle portion and the bottom edge of the rim structure.

Abstract: A lighting apparatus includes a light passing cover, a rim structure and a pressing structure. The light passing cover has a peripheral edge, a central part and a reverse curve surface. The reverse curve surface is extended from the peripheral edge. The central part allowing a light source to emit a light to pass through. The rim structure has a socket, a peripheral wall, and a bottom edge. The pressing structure is made of an elastic strip bent to form a top portion, a middle portion and a root portion. The root portion is kept in the socket. The middle portion presses the reverse curve surface of the light passing cover with an elastic force of the elastic strip to keep the light passing cover staying between the middle portion and the bottom edge of the rim structure.

Abstract: A panel light apparatus is designed to be installed to a ceiling. The panel light apparatus has a bracket firstly fixed to the ceiling. The bracket has a first lateral side and a second lateral side. The panel light apparatus has a detachable panel module to be attached to the bracket. The detachable panel module has a panel, a surrounding wall, a back cover, a first connector and a second connector. When the detachable panel module is attached to the bracket, the first connector and the second connector respectively have insertion portions kept in holes of the first lateral side and the second lateral side of the bracket.