Portable electronic device

A portable electronic device comprising:

• a main body comprising a bottom wall, an opposite top wall and a side wall connecting the top wall with the bottom wall, the bottom wall, the top wall and the side wall cooperatively defining a space in the main body, a groove being defined in the top wall for communicating the space with an outside environment of the main body, the top wall being provided with an active cover plate corresponding to the groove, a plurality the cover plate with the top wall, and a lateral side edge of the cover plate being pivotably connected to the top wall;
• a display unit pivotably attached to a side edge of the main body, wherein when the display unit is closed relative to the main body, the cover plate is received in the groove, and when the display unit is opened relative to the main body, the springs push the cover plate upwardly to cause the cover plate to pivot relative to the top wall to form an air intake between the cover plate and the top wall, the air intake having a triangle-shaped cross section as viewed from a lateral side of the portable electronic device;
• and
• a centrifugal fan being received in the space of the main body, the centrifugal fan sucking air into the space from the outside environment via the air intake and the groove.

A portable electronic device comprising:

• a main body comprising a bottom wall, an opposite top wall and a side wall connecting the top wall with the bottom wall, the bottom wall, the top wall and the side wall cooperatively defining a space in the main body, a groove being defined in the top wall for communicating the space with an outside environment of the main body, the top wall being provided with an active cover plate corresponding to the groove, wherein the cover plate is located above and parallel to the top wall, and a plurality of springs connect the cover plate with the top wall;
• a display unit pivotably attached to a side edge of the main body, wherein when the display unit is closed relative to the main body, the cover plate is received in the groove, and when the display unit is opened relative to the main body, the springs push the cover plate upwardly relative to the top wall with an air intake being defined between the cover plate and the top wall, the air intake having a rectangular-shaped cross section as viewed from each side of the portable electronic device;
• and
• a centrifugal fan being received in the space of the main body, the centrifugal fan sucking air into the space from the outside environment via the air intake and the groove.