| 摘要 |
PURPOSE:To prevent water content from being infiltrated, by by bending the tip of a flange section set on the upper edge peripheral-surface of a lower box with the opened upper surface containing an electrical apparatus, upward, and by engaging the down section of an upper surface cover closing the opened section, with the flange section. CONSTITUTION:In place of a part of a plurality of block members 12 arranged vertically and horizontally, a double floor box 1 consisting of a lower box 2 and an upper surface cover 3 is set, and an electrical apparatus which is not shown in figures is contained in, and wiring is executed under a floor. The tip of a flange section 5 set on the upper edge peripheral-surface of the lower box 2 is bent upward to form a rise section 6. The down section 8 of the upper surface cover 3 closing an opened section is butted to the flange 5. The upper surface cover 3 is provided with a handle 11 outside the rise section 6. As a result, water is prevented from being infiltrated to the electrical equipment directly through the floor, and the insulation of the apparatus is prevented from being deteriorated. |
