| 摘要 |
PROBLEM TO BE SOLVED: To provide a detection sensor for fraudulence using radio waves or magnets in game machines which enables the accurate and quick discovery of the fraudulence committed to the game machines. SOLUTION: A planar magnetic sensor part 7 is inserted between double-layer protective glass bodies 4 of a pachinko machine 1. In the magnetic sensor part 7, an electroconductive film sheet 8 is stuck onto a transparent glass plate or an acrylic plate 9, a pair of copper foil tapes 11 and 12 is mounted along two sides facing each other of the electroconductive film sheet 8 while the electroconductive film sheet 8 is connected with a copper tape 10 insulated by a resin tape 10a therebetween and the sensor part is connected to a fraudulent magnetism detection circuit 19 which is provided with a detection circuit 20 for detecting the induction currents between the copper foils 11 and 12 and a judging output circuit 22 that judges and outputs a fraudulent magnetism based on the detection value thereof. In the fraudulence magnetism circuit 19, an LED display lamp 24 as an alarm is provided near the board surface of the game machine or on the glass plate or the acrylic plate 9. COPYRIGHT: (C)2004,JPO
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