| 摘要 |
<p>PROBLEM TO BE SOLVED: To quickly delete a mist screen.SOLUTION: A control part 11 advances processing from a step S103 to a step S104, stops an ultrasonic vibrator 309 to stop generation of mist (a step S108), then stops individual fans 531-535 (a step S105) to drive a main fan 310 in a reverse rotation manner (a step S106). At this time, a shutter 353 is in a released state, and an upper opening 313 is in an opened state. Therefore, a screen 315 is sucked into a chamber 312 from the upper opening 313 following the reverse rotation of the main fan 310. Consequently, a projection image 600 projected on the screen 315 disappears and the screen 315 also disappears quickly.</p> |
