Patent ID: 8644023

Claim:
An electronic device, comprising: a housing, having an accommodation space and an opening through the accommodation space, and having an upper wall and a lower wall at the position where the opening is formed; a heat-generating element, disposed in the accommodation space; a heat dissipation device, disposed in the accommodation space, comprising: a first heat dissipation fin; a second heat dissipation fin, comprising a body, a first air deflector, a second air deflector, and a pair of extending sections, wherein the first air deflector and the second air deflector are located between the body and the first heat dissipation fin to form an air passage, the air passage is communicated with the opening, the air passage has an air intake end and an air outlet end opposite to the air intake end, a distance between the first air deflector and the second air deflector at the air outlet end of the second heat dissipation fin is smaller than a distance between the upper wall and the lower wall, the first air deflector and the second air deflector are located between the upper wall and the lower wall, and the pair of extending sections extends in a direction from the air outlet end of the first air deflector and the second air deflector towards the opening, so that the pair of extending sections of the second heat dissipation fin are disposed in the opening and are sandwiched between the upper wall and the lower wall; and a heat pipe, in contact with the heat-generating element, the first heat dissipation fin, and the second heat dissipation fin; and a fan, disposed in the accommodation space and located on the air intake end of the air passage for driving an air flow passing through the air passage and discharged via the opening.