Getter device and inner shield for color braun tube

A getter device and inner shield for a color braun tube, comprising:

• a frame member for securing a shadow mask for the color braun tube;
• an inner shield positioned within the color braun tube for shielding an external magnetic field exerting a harmful influence upon a deflection of an electron beam;
• a getter antenna attached at one end thereof to a side of said frame member;
• a getter attached to the other end of said getter antenna for maintaining an inside of the color braun tube in a higher vacuum state by scattering at a scattering angle .beta. Barium contained on said getter into an inside of said inner shield when said getter is heated by a high frequency;
• and,
• an opening portion provided in a surface of said inner shield for receiving the Barium scattering from said getter, said opening portion being formed in a shape of a bugle and projected out from a flat portion of the inner shield to a position having a distance L away from said getter, wherein said distance L is within range of 20-100 mm, and said scattering angle .beta. is within range of 1.047-1.745 rad (60.degree.-100.degree.).