<p>Disclosed are a lamp and heating device, which have a simple constitution and are capable of effectively preventing the seal part from overheating. The lamp (1) comprises a tube part (11) that houses filaments (13) that contain coiled parts (14), a seal part (12) in which is sealed a metal foil (16) connected to the ends of the aforementioned filaments (13), and an overheating prevention unit (30) that covers a portion of the exterior surface (11a) of the aforementioned tube part (11).</p>
