US Patent 10072805 Recessed lighting unit with universal adapter

A recessed lighting unit for mounting to a ceiling or a wall is provided. The recessed lighting unit includes a thermally conductive housing, a light source module inside the housing, and an optical plate. The housing maybe engaged to a universal adapter through a simple twist and lock mechanism. The clips enable the universal adapter to be attached to junction boxes and recessed lighting can-type housings of different sizes. The universal adapter can receive different types of clips, without the use of screws, adhesives, or tools to attach the clips to the adapter. Such a recessed lighting unit may have a reduced set of components while ensuring its adaptability and easy installation. Other embodiments are also described and claimed.