PURPOSE: To obtain a box-form equipment body which has few number of part items and few manufacturing processes, and can prevent the generation of a flooding.
CONSTITUTION: A polygonal bottom plate 25, and plural neighboring side plates 26 and 27 bent from the sides of the bottom plate 25, whose both side edges are abutted on each other, are formed of a single sheet of metal plate 20 integrally, and the neighboring side plates 26 and 27 are welded each other making no clearance, and connected. Plural bending pieces 29 and 30 bent from the side plates 26 and 27 continuously, whose both sides are abutted each other, are provided, and the neighboring bending pieces 29 and 30 are welded each other, so as to reinforce the opening edge of a box-form equipment body A, or to install an other part to the opening surface of the box-form box body A.
ISHIZAWA YOSHIHIRO
WADA MASASHI
ENDO AKIMASA
MATSUSHITA NOBUO
TAJIMA KANJI
TOSHIBA LIGHTING & TECHNOLOGY
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