Power-supplying member and heating apparatus using the same

A power-supplying member, which is disposed to a hollowed part in a tubular supporting member, and which supplies power to at least one of a heating resistor and an electrode which are embedded in a ceramic base supported by the supporting member, the power-supplying member comprising:

• a first rod-shaped member connected to power-supplied object;
• a second rod-shaped member connected to power supply;
• and
• a thermal-expansion absorbing member, which is disposed between the first rod-shaped member and the second rod-shaped member, and which shrinks in a longitudinal direction in response to changes in shape of the first rod-shaped member and the second rod-shaped member in the longitudinal direction due to thermal expansion,
• wherein the thermal-expansion absorbing member is formed from a member which Young's a modulus is 50 [Gpa] or more smaller than Young's modulus of the first and second rod-shaped member.

A heating apparatus comprising:

• a ceramic base in which at least one of a heating resistor and an electrode is embedded;
• a tubular supporting member which supports the ceramic base;
• and
• a power-supplying member, which is disposed to a hollowed part in the supporting member, and which supplies power to at least one of the heating resistor and the electrode,
• wherein the power-supplying member comprises:
• a first rod-shaped member connected to power-supplied object;
• a second rod-shaped member connected to a power supply;
• and a thermal-expansion absorbing member, which is disposed between the first rod-shaped member and the second rod-shaped member, and which shrinks in a longitudinal direction in response to changes in shape of the first rod-shaped member and the second rod-shaped member in the longitudinal direction due to thermal expansion.