US 11,725,810 B2
Heat sink for luminaire and luminaire arrangements having a heat sink
John Trublowski, Troy, MI (US); Lucas Stahl, Detroit, MI (US); Jeremy Santiago, Southfield, MI (US); Christopher Ring, Derry, NH (US); Adikaramge Jayawardena, Manlius, NY (US); Ukwatte Lokuliyanage Indika Upendra Perera, Clifton Park, NY (US); Nadarajah Narendran, Clifton Park, NY (US); Nilay Mehta, Peachtree, GA (US); and Jean Paul Freyssinier, Troy, NY (US)
Assigned to EATON INTELLIGENT POWER LIMITED, Dublin (IE)
Filed by EATON INTELLIGENT POWER LIMITED, Dublin (IE); and Rensselaer Polytechnic Institute, Troy, NY (US)
Filed on Jan. 28, 2022, as Appl. No. 17/587,483.
Claims priority of provisional application 63/143,242, filed on Jan. 29, 2021.
Prior Publication US 2022/0260243 A1, Aug. 18, 2022
Int. Cl. F21V 29/77 (2015.01); F21V 29/83 (2015.01); F21K 9/235 (2016.01); F21Y 115/10 (2016.01)
CPC F21V 29/777 (2015.01) [F21K 9/235 (2016.08); F21V 29/83 (2015.01); F21Y 2115/10 (2016.08)] 11 Claims
OG exemplary drawing
 
1. A heat sink for a luminaire comprising:
a central portion having a top surface and a bottom surface, the bottom surface being adapted to receive a lighting arrangement;
a plurality of arms configured to dissipate heat generated by the lighting arrangement, the plurality of arms extending radially outward from the central portion, each one of the plurality of arms being substantially arcuate between a proximal end and a distal end;
where at least one of the plurality of arms is hollow and defines an interior space that extends between the proximal end and the distal end;
wherein at least one vent is provided on the hollow arm, the at least one vent being in fluid communication with the interior space; and
wherein the hollow arm includes a first side surface and a second side surface, and wherein the at least one vent includes a first vent and a second vent, the first vent being circular and provided on the first side surface toward the proximal end of the arm, the second vent being stadium-shaped and provided on the first side surface toward the distal end of the arm.