| 摘要 |
PURPOSE:To obtain an inexpensive antenna in component cost with safety by prolonged cabinet to a head band to a case for radio reception circuit and arranging a metallic wire playing a role of the antenna in the cabinet. CONSTITUTION:The head band 11 is coupled mechanically to a part of prolonged cabinets 16, 17 provided respectively to a power case 12 and a radio reception circuit case 13 for its both ends, and the power supply contained in the case 12 is fed to a radio reception circuit contained in the case 13 via an insulation cord 18 and the head band 11. Moreover, the metallic wire 19 playing a role of the antenna is provided in the prolonged cabinet 17 of the case 13 while being insulated electrically from the head band 11. |
