Patent ID: 7105994

Claim:
A color cathode ray tube comprising: a shadow mask; first frames for supporting the shadow mask; and second frames for supporting the first frames; wherein the first frames have a lateral portion for supporting the shadow masks, a bottom portion that is connected to one end of the lateral portion and bent with respect to the lateral portion, an inclined portion that is connected to one end of the bottom portion and bent with respect to the bottom portion, and a joint portion that is connected to one end of the inclined portion and bent with respect to the inclined portion, the first frames have a substantially triangular cross-section, which is formed by the lateral portion, the bottom portion, and the inclined portion, the joint portion is overlapped on the lateral portion and welded partially to the lateral portion, and a space is provided between facing surfaces of the lateral portion and a part of the joint portion other than the part welded to the lateral portion, the joint portion being inclined with respect to the lateral portion such that the space between the facing surfaces enlarges with an increase in a distance from an edge of the lateral portion on a side of supporting the shadow mask.