THERMAL DEFORMATION MEMBER FOR ELECTRON TUBE, COLOR PICUTRE TUBE USING THE SAME, THERMAL DEFORMATION MEMBER FOR CURRENT CONTROLLER AND CIRCUIT BREAKER USING THE SAME

摘要

A thermal deformation member (1) for electron tubes or current controllers composed of a multilayer body formed by stacking a high thermal expansion member (1) made of, for example, an Fe-Ni-Cr alloy, an intermediate member (4) made of one kind of metal selected from among Fe, Al, and Cu or an alloy containing some of the metals, and a low thermal expansion member (2) made of, for example, an Fe-Ni alloy. The coefficient of thermal expansion alpha 3 of the intermediate member (4) is greater than that alpha 2 of the low thermal expansion member (2) and smaller than that alpha , the high thermal expansion member 1 ( alpha 1> alpha 3> alpha 2). The intermediate member (4) reduces the manufacturing cost and improves the workability without deteriorating the strength and long-term reliability of the members. A color picture tube is manufactured using the above-mentioned thermal deformation member for electron tubes in the thermal deformation section of a frame holder one end of which is fixed to a panel and the other end of which is firmly stuck to the mask frame of a shadow mask. An overcurrent protector is manufactured using the above-mentioned thermal deformation member for current controllers in the thermal deformation section which opens a contact.