DIRECTION INDICATOR DEVICE

When an operation lever (43) is operated to a left position, a left-turn signal lamp (16) blinks (S1). When a steering wheel (41) is right rotated, a steering angle detected by a steering angle sensor (17) is an angle of the right rotation. When the driver operates the steering wheel (41) from the right rotation to the left rotation, a course d of a vehicle starts to turn in the left direction. When the steering angle is equal to or larger than a preliminary angle (+42 degrees) and then returned to a preliminary angle (+38 degrees) or less, the blinking of the left-turn signal lamp (16) is stopped.