Abstract: An electrical heating device includes at least one heat generating element and at least one heat emitting element having opposed surfaces that abut the heat generating element. The heat generating element includes at least one PTC heating element having strip conductors on both sides of it for the electrical supply of the PTC heating element At least one of the strip conductor is provided with at least one contact projection which protrudes beyond a PTC heating element locating face formed on the strip conductor. Also disclosed is a heat generating element having at least one strip conductor provided with at least one contact projection.

Abstract: A portable heater (100) is provided. The portable heater (100) comprises an air inlet (108) and an air outlet (118). The portable heater (100) also comprises a heating chamber (115) including one or more heating elements (230). A preheating chamber (114) is provided that is located between the air inlet (108) and a heating chamber inlet (116).

Abstract: A heating device includes a case having a plurality of openings and a plurality of slits are defined in bars of the case so that a plurality of heating boards are engaged with the slits of the case at an equal distance. A power control device is connected to the case and includes a power line having a plurality of male connectors. Each heating board includes a heating layer sandwiched between two isolation plates. Two wires are connected to the heating layer and each wire has female connectors, which are connected with the male connectors of the power line. The heating layers of the heating boards dispense heat evenly from the openings of the case.

Abstract: An electric space heater uses the heat generated by quartz-halogen lamps to heat air which may be supplied to heat a local space. The heater conducts air through a heater enclosure in which the lamps are installed. The air path is parallel to the longitudinal axis of the lamps. The air is warmed by conduction from the surface of the lamps and from heated walls surrounding the lamps and which form the air flow path. The walls are heated by radiation from the lamps. The flow path for the heated air and the placement of the heated walls substantially isolate the outer portion of the heater enclosure from the heat generated by the lamps to maintain the temperature of the outer surface of the space heater at or near ambient temperature. The walls also confine the light generated by the lamps to the interior of the space heater. The air flow through the space heater is assisted by an electric fan.