US Patent 9702539 Flow-through luminaire

A housing for a luminaire is disclosed herein. The housing can include a central portion forming a substantially closed shape and having an inner area therewithin, where the central portion is thermally conductive. The central portion can include an upper end and a lower end adjacent to the upper end. The housing can also include a number of fins thermally coupled to and extending inward and outward away from the upper end of the central portion, where the plurality of fins are thermally conductive.