| 摘要 |
PROBLEM TO BE SOLVED: To provide a display device, capable of exactly detecting earth magnetism by an earth magnetism sensor by preventing influence of a magnetic field from a substrate with mounted power source, polarization function part, even when the substrate is arranged at the center of a casing. SOLUTION: The display device 10 having a cathode ray tube 12 and the casing to accommodate the cathode-ray tube 12 is provided with a substrate 28 having mounted operation function part on which an operation function part for a user to perform an operation is mounted, the substrate 30 with mounted power on which the power, the polarization function part to be arranged at the center of the casing, to supply the power to the cathode ray tube 12 and to polarize electronic beam in the cathode-ray tube 12 are mounted and a geomagnetism sensor 40, between the substrate 28 with mounted operation function part and the substrate 30 with mounted power, polarization function part, to be placed at a lower part of the cathode-ray tube 12 and to detect the magnetic field of the earth magnetism in the tube axis direction of the cathode-ray tube 12 and the magnetic field in the horizontal direction which is orthogonally crossed to the tube axis direction of the cathode-ray tube 12.
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