| 摘要 |
Radiant units are known in the form of a plate-like assembly having a supporting frame which accommodates a plurality of radiant lamps on holders, the radiant lamps being shielded by a front cover and a back cover, the front cover, which is permeable to radiation, being held removably. To design a radiant unit so as to permit easy and rapid installation as well as the quick replacement of the front cover as well as of the rear cover in order to change the internally mounted radiator, and also to permit compensation for different thermal expansion between the covers and the supporting frame, the front and/or rear cover are held with their outer faces against abutments joined to the supporting frame, and spring-loaded clamps are associated with the inner faces and urge the cover from the inside against the abutments.
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