AIR PURIFIER

An air purifier includes a substantially L-shaped support member including a bottom portion and a lateral portion, a substrate disposed on the bottom portion, a light source that is disposed on the substrate and can emit ultraviolet light, a heat sink disposed on the lateral portion and including heat dissipation fins, a substantially L-shaped heat pipe at least partially housed in a recess formed in the support member, and a cover covering at least a part of the heat sink. The bottom portion includes a first surface and a second surface opposite to the first surface. The substrate is disposed on the first surface. The lateral portion includes a third surface joining to the first surface and a fourth surface located opposite to the third surface, and the heat sink is disposed on the third surface. The recess is formed on the second surface and the fourth surface.