Patent ID: 8604397
Filing Date: 2013-12-10
Classification: F24C,H03K,H05B

Abstract:
1. A cooking device comprising: a heating source operable to heat an object to be heated; a top plate provided on an upper surface of the cooking device; a metal frame provided at a periphery of the top plate and connected to the earth; an electrode unit including a key electrode provided on a lower surface of the top plate and a contact electrode provided on the lower surface of the top plate and electrically connected with the key electrode, the electrode unit operable to input an assigned control command when the top plate in the vicinity of the key electrode is touched with a finger; a control unit electrically connected with the contact electrode by means of a conductive connection member contacted with the contact electrode, the control unit being operable to apply a high frequency signal to the electrode unit and detect that the vicinity of the electrode unit is touched to control conduction to the heating source based on the control command; a cancel electrode provided on the lower surface of the top plate around the key electrode and contact electrode except at a near side of the top plate so as to surround the key electrode and the contact electrode except at the near side of the top plate, wherein a distance between the contact electrode and the cancel electrode is smaller than a predetermined width; and a light source provided on a lower side of the key electrode, wherein the light source irradiates a cutout portion formed by cutting out a part of the key electrode with light; wherein the control unit is electrically connected to the cancel electrode by means of another conductive connection member to apply a high frequency signal to the cancel electrode, and limits an operation based on the control command when detecting that the vicinity of the cancel electrode is touched.