Abstract: A system for controlling the temperature and relative humidity of the interior chamber of a respirator is disclosed. In the preferred embodiment, the system includes a body configured to conform to the face of a user and form an interior chamber defined by the respirator body and the face of the user. The system includes a sight region in the upper portion of the body through which the user can see. A thermoelectric module having a first temperature plate and a second temperature plate is interposed in the lower portion of the body so that the first temperature plate contacts the interior chamber and the second temperature plate contacts the external environment. A power source provides DC current to the thermoelectric module causing a temperature differential between the first temperature plate and the second temperature plate. Preferably, the plates of the thermoelectric module include heat exchangers and fans for maximizing the efficiency of the thermoelectric module.

Abstract: A system for controlling the temperature and relative humidity of the interior chamber of a respirator is disclosed. In the preferred embodiment, the system includes a body configured to conform to the face of a user and form an interior chamber defined by the respirator body and the face of the user. The system includes a sight region in the upper portion of the body through which the user can see. A thermoelectric module having a first temperature plate and a second temperature plate is interposed in the lower portion of the body so that the first temperature plate contacts the interior chamber and the second temperature plate contacts the external environment. A power source provides DC current to the thermoelectric module causing a temperature differential between the first temperature plate and the second temperature plate. Preferably, the plates of the thermoelectric module include heat exchangers and fans for maximizing the efficiency of the thermoelectric module.

Abstract: A goggles apparatus 10 is provided with an active ventilation system for reducing fogging of the goggles during use. The goggles apparatus includes, among other features, a lens 12, a body 14 supporting the lens and presenting shielding walls that define an interior space adjacent an interior surface of the lens, and inlet and outlet ports formed in the body. A fan 54 is supported in the outlet port of the goggles for drawing air through the inlet port into the interior space, and an air filter 32 is supported in the inlet port for treating air entering the goggles to protect against irritants reaching the eyes of the wearer.