COOL AND HOT AIR BLOWING DEVICE OF CONSTRUCTION MACHINERY

摘要

A cool and hot air blowing device of construction machinery capable of sufficiently meeting the requirements of an operator for the comfortableness of air-conditioned working environment and for the use of air-conditioning for multiple purposes, wherein an upper blowing tube (2) and a lower blowing tube (3) are formed in a generally cylindrical shape having a conical peripheral surface with an inclined surface having outlets (20) and (30) provided therein, and the upper blowing tube (2) is elastically fitted to the lower blowing tube (3) and the lower blowing tube (3) is elastically fitted to the vertical part (11a) of an air-conditioning duct (11), whereby, cool and hot air can be blown in desired directions by operating air direction control knobs (24) and (34) installed in the outlets (20) and (30) rotatable horizontally at the connection parts thereof and directed to desired rotating positions to adjust the vertical directions of inside shrouds (211 to 213, 311 to 313).