Abstract: In a heating apparatus comprising heating elements such as elongated tubular heating elements, radiating heat towards the heated space, and a reflector located behind said heating elements, the radiation-convection ratio is controlled by slowing or braking the upwardly directly current of convection air heated in contact with the heating elements. A box-like member is provided above the heating elements in order to retain the convection air flowing upwardly, thus braking said upward movement of the air. A cushion of hot air is thus created within said box-like member, which opposes the upward movement of additional heated air. The box-like member is open rearwardly to permit escapement of air, thus reducing both the velocity and the temperature of the convection air leaving the apparatus. This results in a much more uniform temperature in the space, for instance in a room, heated by the apparatus, the temperature near the floor and near the ceiling being substantially equal.

Abstract: This electric heating device comprises a support surrounded by a resistance wire and located within a vacuum outer tube, said resistance being spaced from the inner surface of the outer tube. In order properly to position the support and resistance wire on the center axis of the tube, a mounting assembly is provided at each end of the support. Said mounting assembly comprises a resilient cap-shaped centering member having an annular ring portion surrounding the support, clips limiting the engagement of said cap-shaped member onto said support, and outwardly extending resilient arms engaging the inner surface of the outer tube in order to center the support and resistance wire within said outer tube. A supply lead is connected between said resistance wire and an output/input conductor. Said supply lead comprises a longitudinal portion extending along the support and a radial portion connected to said conductor within a supporting glass case or bead projecting into the outer tube from its end.