CROSS-REFERENCE TO RELATED APPLICATION

This application claims the priority benefit of Taiwan applications serial No. 108136113, filed on Oct. 4, 2019. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of specification.

BACKGROUND OF THE INVENTION

Field of the Invention

The invention relates to a fan module.

Description of the Related Art

The display card is one of the most basic components of a personal computer. It is mainly used to process graphic data and provide display signals, so that the displayer displays the required image. With the rapid development of technology, the current display card is required to provide three-dimensional picture calculation and graphics acceleration functions while providing display signals. However, as the workload of the display card is getting heavier, various heat sinks have emerged to the display card for effectively dissipate the generated heat.

BRIEF SUMMARY OF THE INVENTION

According to the first aspect, a fan module is provided. The fan module comprises a fan and a casing. The casing accommodates the fan and includes a first cover and at least one second cover, the second cover is rotatably connected with the first cover at a first location or a second location. A portion of the fan exposed by the second cover at the first location is less than that at the second location.

According to the second aspect, a display card device is provided. The display card device comprises a display card circuit board, a heat dissipation device, and a fan module. The heat dissipation device is disposed on the display card circuit board. The fan module is disposed on a side of the heat dissipation device away from the display card circuit board. The fan module includes a fan and a casing. The casing accommodates the fan and includes a first cover and at least one second cover, the second cover is rotatably connected with the first cover at a first location or a second location. A portion of the fan exposed by the second cover at the first location is less than that at the second location.

According to the disclosure, the casing of the fan module is separated into the first cover and the second cover. Moreover, the second cover is rotated relative to the first cover or further removed from the first cover to move between the first position (the closed state) or the second (the opening state) position. In this way, when the casing of the fan module is moved to the opening state, the airflow outside the casing smoothly flow into the casing to cool down the heat dissipation device, and then the hot air leaves through the air outlet between the second casing and the first casing, which improves the heat dissipation performance of the display card. In addition, the first cover fixed to the display card protects the users and the fan at the same time, avoiding the users from being injured by the rotating fan and the fan from being damaged by the collision of foreign objects as well.

The specific details will be described in the following embodiments and related drawings.

