Patent ID: 8378274
Filing Date: 2013-02-19
Classification: H05B

Abstract:
1. An induction heating device comprising: a top plate capable of placing thereon a cooking utensil containing material to be cooked, the top plate formed from translucent material; an infrared sensor having a field of view in which the infrared sensor is capable of detecting infrared radiation, the infrared radiation being emitted from the cooking utensil and then transmitted through the top plate; a temperature detector configured to detect a temperature of the cooking utensil based on an output of the infrared sensor; a coil disposed under the top plate, the coil being configured to heat the cooking utensil; a light-emitting section disposed under the top plate, the light-emitting section operable to emit visible light in an area at least partially overlapping with the field of view of the infrared sensor; and a controller configured to control the coil based on temperature information of the temperature detector, thereby control electric heating power to be supplied to the cooking utensil, and also control the light-emitting section, wherein the translucent material of the top plate and a wavelength and intensity of the visible light emitted by the light-emitting section are selected such that the visible light emitted by the light-emitting section is visible on an upper surface of the top plate within the area overlapping with the field of view of the infrared sensor.