| 摘要 |
PROBLEM TO BE SOLVED: To mixedly house old and new types of sub-racks in a single main body of a multistage rack, which alternately houses the sub-racks and convection guiding devices in vertically arranged housing sections. SOLUTION: In a multistage rack provided with a rack body 1, in which sub-racks 10 and 35 are vertically arranged and convection guiding devices 50 which are provided in spaces 3 formed among housing sections, each convection guiding device 50 is provided with two side plates 51, a convection guiding plate 52, and a connecting plate 53. The front section of the plate 52 is pivoted vertically turnably by the front lower parts of the side plates 51, and the rear section of the plate 52 is supported at different height positions by a plurality of locking sections 51a and 51b provided in the rear upper parts of the side plates 51. In the rear section of the plate 52, in addition, a sub-rack bearing sections 52 is provided for bearing the rear lower surface of the sub-rack positioned immediately above the sections 52b.
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