| 摘要 |
A hub structure includes an annular body and a flow guide unit. The annular body has a top end and a receiving space. The flow guide unit is disposed at the top end of the annular body. At least one raised section is formed on one face of the flow guide unit opposite to the receiving space. A motor set is disposed in the receiving space. When the motor set operates, the annular body and the flow guide unit are driven to rotate around the axis of a shaft rod. At this time, airflow is conducted through the raised section into the receiving space to dissipate the heat generated by the motor set. Accordingly, the temperature of the motor set can be effectively lowered to prolong the lifetime of the motor set.
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