Color cathode ray tube having magnetic members for mitigating effects of an external magnetic field along an axial direction of the in-line election gun

A color cathode ray tube comprising:

• an in-line type electron gun for generating three electron beams;
• and
• a bulb having a neck tube enclosing the in-line type electron gun,
• wherein the color cathode ray tube further comprises magnetic means for mitigating effects of an external magnetic field along an axis direction of the in-line type electron gun on convergence of the electron beams, the magnetic means including a pair of magnetic members being disposed in a horizontal plane including the three electron beams so as to sandwich the three electron beams, each of the pair of magnetic members being formed of a high permeability magnetic material having a specific magnetic permeability which is greater than 1 and is high enough for the external magnetic field to pass through the inside of the magnetic members, thereby preventing misconvergence of the electron beams.