| 摘要 |
PROBLEM TO BE SOLVED: To provide a compact control box, where no coolers are installed through heat-exchanging and cooling air warmed inside the control box. SOLUTION: In the upper part of a body case 1, an upper case part 1A having a fin portion 10 is formed. The fin portion 10 has a large number of pipes 12 supported by a ceiling wall 3 and upper sidewalls 5A. The pipes 12 are fitted to the flange portion 31 of a ceiling wall 3 and upper sidewalls 5A. The pipes 12 are supported by a support board 11, and fitted to the flange portion 31 of the ceiling board 3 and the flange portions 51 of the upper sidewalls 5A. One end of each pipe is projected outside of a box K, and the other end is arranged in a fan housing chamber inside the box K. Warmed air inside the box is heat-exchanged by the pipes 12 which pass outside air through. |
