| 摘要 |
<P>PROBLEM TO BE SOLVED: To always ensure a constant heat dissipation efficiency without being affected by the direction of wind (air) passing through, and to use a heat dissipation device commonly in all types of unit without depending on wind directions even when it is mounted on a unit of different wind direction depending on the type of the unit. <P>SOLUTION: The heat dissipation device 30 has multiple heat dissipation fins 31 extending integrally from the bottom face 32a of a fin base 32 on which a polygon mirror 74 is mounted. The heat dissipation fins 31 are formed to have a circular cross-sectional shape, and arranged so that any one fin 31 is located on a straight line from any direction orthogonal to the extending direction of the heat dissipation fins 31. A heat dissipator is provided in contact with the tip of the heat dissipation fins 31, and the side surface between the heat dissipator and the fin base 32 is opened entirely as an open portion. <P>COPYRIGHT: (C)2013,JPO&INPIT |
