| 摘要 |
PROBLEM TO BE SOLVED: To provide an electronic device that can suppress occurrence of short-circuiting and enhance heat dissipation performance without complexing the shape of a housing member.SOLUTION: A motor control device 1 has a heat conduction member 13. The heat conduction member 13 thermally connects a wiring pattern, etc. from the surface of a main body portion 100 to a predetermined area of a housing member 12 located at an anti-wiring board side. Therefore, it is unnecessary to provide the housing member 12 with a projection portion projecting to the neighborhood of wiring patterns 111 to 113, etc. unlike a prior art. Accordingly, heat dissipation can be performed without complexing the shape of the housing member 12. Occurrence of short-circuiting can be suppressed. The motor control device 1 has a wiring board 11 having thermal conduction patterns 114, 115. The thermal conduction patterns 114, 115 are formed on a surface facing other two side surfaces excluding two side surfaces from which the terminal portion of the main body portion 100 projects, and the surface is exposed. Therefore, the area of the thermal conduction path can be increased, and the heat dissipation performance can be enhanced.SELECTED DRAWING: Figure 13 |
