| 摘要 |
A panel heater comprises front and back panels 10, 14 joined around their perimeter (16) and enclosing a space containing an electrical heating element 22 which is spaced by an insulating layer 24 from a reflective layer 12 at the inner side of at least one of the panels 10, 14. Insulation 24 may be honeycomb layers translucent to infra-red radiation. <IMAGE> |
