BVM coils for modulating a scanning velocity in a horizontal direction of
electron beams emitted from an electron gun are provided at a position
where the BVM coils are overlapped with an electron gun in a tube axis
direction, and a pair of magnetic substance pieces are provided at a
position where the pair of magnetic substance pieces are overlapped with
the BVM coils in the tube axis direction. The pair of magnetic substance
pieces surround a funnel continuously in a circumferential direction of
an outer circumferential surface of the funnel, except for a portion of
the surface that intersects a plane defined by the tube axis and a
vertical direction axis, and the vicinity of that portion. Because of
this, a cathode-ray tube apparatus with the sensitivity of the BVM coils
enhanced can be provided.