| 摘要 |
An improved device for mounting power circuit parts on a flat mother board, in order to mount power circuit parts having large volumes and weights (a) safely and strongly, (b) maintaining safety even from the standpoint of high-tension portions, (c) enabling the heat-radiating capacity to be adjusted, and enabling the power-source unit to be constructed in a small standardized size, (d) enabling the assembling, handling, operation and maintenance to be easily carried out, and (e) without electromagnetically interfering with other control cards mounted on the same control unit. The device for mounting power circuit parts on a flat mother board of the invention comprises (a) a rectangular board (5) on one surface of which is mounted a power circuit part (4); (b) two mounting members (6) mounted on the other surfaces of said rectangular board (5) along the upper and lower edges (51, 51 min ) of the rectangular board (5); (c) two rectangular heat sinks (7) of which the one side is mounted on two vertical edges (52, 52 min ) of the rectangular board (5), and which stretch in a direction to surround said power circuit part (4); and (d) a rectangular shielding board (8) that is attached to the sides (72) of said two heat sinks (7) opposed to said sides (71), and that is combined with said rectangular board (5) and said two heat sinks (7) to constitute a square cylinder, and (e) whereby the device is mounted on a flat mother board (1 min ) via one of said two heat sinks (7) and via said two mounting members (6). |
