An electrical heat lamp for pig breeding includes a housing and an electrical heating source. The heating source is a U-shaped, infrared electromagnetic radiation heating element, and includes an electric member portion for connecting to an external electric energy source. The heat lamp includes a reflector arranged in the housing, the reflector being adapted to reflect the electromagnetic radiation emitted from the heating source, is adapted to fit the shape of the heating source, and has a U-shaped groove which in turn has a parabolic cross section. The heat lamp includes a sealing member sealing the space or electrical connection between the heating source and the electric member portion against water optionally, one or two more sealing members are provided.