Provided is a lamp of reflector device and method of manufacturing same. The lamp comprises a base including a plurality of apertures, a LED lamp mounted on the base, a support including side walls for forming a space and a plurality of apertures, a rivet assembly including a plurality of rivets inserted through the apertures of the base and the apertures of the support to fasten at the apertures of the base by soldering and electrically connect to the LED lamp, and bond filled in the space prior to solidification. The invention has advantages of being ease of mass production due to modularized design.