| 摘要 |
<p>An electrical heating element for a radiant electric heater comprises an elongate electrically conductive strip (1) adapted for edgewise mounting on a base (3) of thermal and electrical insulation material. The strip comprises an elongate continuous portion and a discontinuous portion integral, and preferably substantially coplanar, with the continuous portion, the discontinuous portion comprising a plurality of mounting tabs (2) extending in a direction away from the continuous portion at spaced-apart locations, for securement to or in the base. Provided in each tab is at least one aperture such as a hole (5C) or slot (5B, 5E) or slit (5A, 5D) , whereby thermal conduction into the tabs (2) from the continuous portion is reduced or minimised and also variation in electric current density along the continuous portion of the strip (1) is reduced or minimised when the strip is electrically connected for operation in a radiant electric heater. <IMAGE></p> |
