Patent ID: 6167193
Filing Date: 2000-12-26
Classification: F24H

Abstract:
A portable electrical heater comprising:portable housing means defining an air inlet, an air outlet, and an air flow path between said air inlet and said air outlet;blower means for circulating air through said air flow path;an electrically powered heater element disposed in said air flow path;a control board comprising selector means and comprising a mode switch means, and a temperature selector switch means, for effecting operation of said heater; and display means comprising a digital display, an ambient temperature lamp and a set temperature lamp;an ambient temperature sensor; andelectronic controller means for controlling energization of said display means and said heater element in response to inputs from said selector means and said temperature sensor; and wherein said controller responds to an input from said temperature sensor and selective actuation of said mode switch means by establishing alternately a temperature selection mode or an automatic ambient temperature mode; and wherein in said temperature selection mode said controller means illuminates said set temperature lamp, and in response to activation of said temperature selector switch means provides on said digital display a selected temperature; and in said automatic ambient temperature mode said controller illuminates said ambient temperature lamp, provides on said digital display ambient temperature sensed by said temperature sensor, and controls energization of said heater element to maintain an ambient temperature equal to said selected temperature.