US Patent 10174891 Shallow design of LED illuminating downlight devices in ceilings

A recessed, adjustable LED downlight is provided for shallow plenum installations. The fixture comprises a bottom plate, a circular base rotatable along an upper surface of the bottom plate, a heat sink enclosure secured to the upper surface of, and rotatable with, the circular base, and a bridge. The heat sink enclosure comprises a pair of fins on first opposite sides of the light source enclosure and a pair of tracks formed in second opposite sides of the heat sink enclosure between the pair of fins. The bridge, to which an LED module is secured, is affixed to the heat sink enclosure, whereby heat from the LED module is transferred to, and dissipated by, the bridge. The bridge is engaged with and pivotable along the pair of tracks in the heat sink enclosure.