To provide a high-frequency induction heating apparatus for carrying out efficient conduction heating.

In the high-frequency induction heating apparatus for heating a heated object which is carried in an induction heating part by impressing high-frequency current at the induction heating part, a pair of conduction rolls arranged with a given interval separated from each other and consisting of a first conduction roll and a second conduction roll carrying the heated object to be in contact with and loaded by rotating around an axis, a copper plate connecting with the first conduction roll and the second conduction roll through a wiring, an induction pipe fitted between the first conduction roll and the second conduction roll, and being as an induction heating part arranged so as the heated object to be carried in an inner part space, a high-frequency power source impressing high-frequency current to the induction pipe, and a high-frequency bus-bar connecting between the induction pipe and the high-frequency power source. The high-frequency bus-bar is fitted in the vicinity of the copper plate, and arranged in parallel as a given length with the copper plate.

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