公开(公告)号：JPH05236490A

公开(公告)日：1993-09-10

申请号：JP24606392

申请日：1992-08-24

Applicant: APPLE COMPUTER

Inventor： DEBITSUDO ERU RANDOGUREN

IPC: H01F13/00 ,  H01J29/00 ,  H01J29/96 ,  H04N9/29

Abstract: PURPOSE: To miniaturize a degaussing coil and to reduce necessary space by arranging the spiral pattern of an electric trace on a substrate installed on a front vessel surrounding CRT. CONSTITUTION: This degaussing coil 24 for preventing the influence of a magnetic field due to the external equipment of a cathode ray tube 20 are constituted in spiral forms with the conductive trace printed at the inner face of the vessel 22. Thus, it is not necessary to separately provide the degaussing coil and to assemble it so as to make a space to be small. A contact 28 is provided and is connected to a subsequent circuit. Thus, wiring connected to the degaussing coil is not required, assembly is automated and workability can be improved.