A camera having a substantially cubic form factor comprises, among other components, an image sensor, a lens assembly, a printed circuit board, and a heat sink. A heat sink operates to provide a thermally conductive path to an external surface of the camera. The heat sink comprises an external portion structured around a perimeter of the lens window and at least one arm extending perpendicular from the external portion to the interior of the camera. The at least one arm is thermally coupled to the at least one electronic component on the printed circuit board so as to conduct heat away from the electronics to the exterior of the camera.