Patent ID: 6885814
Filing Date: 2005-04-26
Classification: H01L,H05B

Abstract:
1. A carbon wire heating element sealing heater in which a carbon wire heating element using carbon fibers is sealed in a quartz glass member, wherein the quantity of water absorbed in the carbon wire heating element is 2×10 a first glass pipe disposed at an end portion of the quartz glass member and for accommodating a part of the carbon wire heating element; a second glass pipe having the same axis as that of the first glass pipe and for accommodating an end portion of a power supply connecting wire for supplying electric power to the carbon wire heating element and an end portion of the carbon wire heating element; and a terminal portion accommodated in the first and second glass pipes in a compressed state and having a wire carbon member for nipping the carbon wire heating element and power supply connecting wire, wherein the wire carbon member is constituted of plural wire carbon bundles composed of wire carbon materials and the carbon wire heating element is disposed substantially in the center of the glass pipe among the plural wire carbon bundles wherein the quantity of the wire carbon members accommodated in the second glass pipe is larger than that of the wire carbon members accommodated in the first glass pipe.