To solve the problem of a conventional drying device to be fitted to a veranda freely changeable height of a support having a release mechanism, a complicated structure and unseasy assembling and thick and heavy.

A lock lever 7 provided with a fall-stopper projecting part 7 over a tip thereof and provided with a lock projecting part 7b at a side thereof close to the tip is fitted to a support tool 4, which is fitted freely to be slid with the support 3 of the washing drying device, freely to turn. The support 3 is provided with several lock holes 3c to be engaged with the tip of the lock lever 7 in the vertical direction. The fall-stopper projecting part 7a is hooked on a back side of the lock hole 3c in the engaging condition to prevent the turning operation of the lock lever 7 in the release direction.