SAFETY DISPLAY UNIT OF CRANKSHAFT

PURPOSE: To provide a safety display unit of a crankshaft that is able to transmit both valid and invalid signals out of a safety device properly to an operator. CONSTITUTION: At the specified case being judged by a press controller 27, an operating signal out of a safety device is automatically invalidated. At this time, a crankshaft angle detector 13 detects an angle of a crankshaft, and a crankshaft angle indicator 35 displays an angle of a crankshaft 5 circlewise by an illuminant 37, while the press controller 27 judges the validity or invalidity of the operating signal out of the safety device 29 from a combination of an operation selector switch 31 and a control selector switch 33, varying a color of the crankshaft angle indicator 35. For example, the crankshaft angle indicator 35 is one that arranges this two-color illuminant 37 into a circular form at the specified center angle, whereby a color of this two-color illuminant 37 is varied, thereby display the validity or invalidity of the operating signal out of the safety device 29.