| 摘要 |
PROBLEM TO BE SOLVED: To prevent switching to a power-saving mode before the lapse of a prescribed time.SOLUTION: A normal mode in which a performance activating a symbol display device which is performance execution means, first and second illumination devices and a speaker with a normal consumption power is executed, and a power-saving mode in which performance activating the symbol display device, the first and second illumination devices and the speaker with a suppressed consumption power in comparison with the normal mode is executed are set. A timer as time measuring means capable of measuring a time lapsing from a prescribed measurement start timing is disposed. A main control CPU switches from the normal mode to the power-saving mode after the timer measures the lapse of a preset mode switching time Tc.SELECTED DRAWING: Figure 11 |
