| 摘要 |
<p>PROBLEM TO BE SOLVED: To suppress the temperature rise inside a case, by providing an electronic connection box with an opening for heat radiation on top of the upper case, providing it with a heat radiation part, and projecting a part of the bus bar for a large current accommodated in the case through the opening. SOLUTION: Bus bars 3a, 3b, and 3c, which has desired circuit patterns, and insulating boards 4a and 4b are stacked alternately in the interior 7 of the case consisting of a lower case 1 and an upper case 2. Then, this electric connection box is provided with an opening 5 for heat radiation in the shape of a thin rectangle on top of the upper case 2, while at a bus bar 3c for a large current arranged in the uppermost layer a heat radiation part 6 bent upward is made in the position corresponding to the opening 5 for heat radiation. This heat radiation part 6 is covered with an upper case 2 while being passed through the opening 5, and further the upper case 2 is covered with an upper case 10 on one hand, and the lower case 1 is covered with a lower case on the other.</p> |
