| 摘要 |
PURPOSE: A duct device equipped with a support bar is provided to ensure convenient reinforcement of a duct because the support bar is installed in the duct via flanges and the length of the support bar is easily regulated. CONSTITUTION: A duct device equipped with a support bar comprises lower and upper ducts, a first support bar, and a second support bar(4). The lower duct is opened on the upper and front sides and has coupling holes on top. The upper duct is opened on the lower and front sides and has coupling holes on bottom. Both ends of the first and second support bars are coupled to the coupling holes of the upper and lower ducts. The support bars include a middle rod formed with male threads on both ends, round rods(42a,42b) which are respectively coupled to both ends of the middle rod, flanges(43a,43b) which are provided on the round rods, and fastening units which secure the flanges on the upper duct.
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