Induced draft anti fog device for goggles

摘要

An induced draft anti-fog system for goggles and similar optical devices having an air tight goggle with ports, fixedly attached to a hollow elastomeric conduit. Said hollow conduit having an intake port and exhaust fan. The exhaust fan has an on/off switch in communication with two battery packs. When the fan is in operation air is drawn into the intake port and circulated into the goggle housing thereby defogging the goggle lens and then is circulated out through the fan.

主权项

1. An induced draft anti-fog device for optical lenses to prevent said lens from fogging up and accumulating condensation comprising:
a) a goggle housing having optical lens mounted in a front wall of said housing, and an opening in said housing opposite said front wall adapted to be worn on a face of a user; b) a first opening in one side of said housing for introducing air flow across an interior portion of said optical lens; c) a second opening in an opposite side of said housing for removing said air flow from said interior portion of said optical lens; d) a strap for holding said goggles to a user face extending between said first and second openings for circulating said air flow through said strap and said goggle housing; e) comprising a battery operated exhaust fan mounted on a rear portion of said strap for circulating incoming ambient air through said housing and exhausting said ambient air after circulating through said housing; f) an air intake port on said strap located between said exhaust fan and said first opening; and g) a barrier member within said strap disposed between said air intake port and said exhaust fan to block any mixing of exhaust air and fresh air.