| 摘要 |
PROBLEM TO BE SOLVED: To provide an engine speed informative device which can inform an engine speed by utilizing an existing informative instrument comprised of a LED, a lamp, a buzzer and the like to inform the occurrence of warning without new construction of a tachometer or a measuring instrument. SOLUTION: The invention is characterized by that it has an engine speed detection sensor 16 to detect the engine speed of an engine E; a determination means 8A to determine whether the detected engine speed of the engine E is stayed within the specified engine speed range for the specified time or not; and an informative means 8B to inform the engine speed of the engine E when it is determined that the engine speed of the engine E is stayed within the specified engine speed range for the specified time by an existing informative instrument C comprised of a LED 4, the lamp, the buzzer and the like to inform the occurrence of warning.
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