Patent ID: 8420985
Filing Date: 2013-04-16
Classification: H05B

Abstract:
1. A de-fogging device including: a housing having means for mounting to a vertical surface to be heated; an elongated heating element disposed within said housing and extending parallel to said vertical surface but spaced apart therefrom when said housing is mounted to said vertical surface; a plurality of vanes disposed within said housing and, when said housing is mounted to said vertical surface, having central portions which extend parallel to said vertical surface and upper portions inclined toward said surface, said vanes being separated from one another and from said heating element by spaces which open both downwardly and upwardly of said housing such that, when said housing is secured to said vertical surface, air beneath said housing enters said spaces where it is heated by said heating element, flows upwardly by convection through said spaces, discharges upwardly from said spaces and flows across said vertical surface with resulting heating of said vertical surface.