Patent ID: 8199500

Claim:
A heat radiation mechanism of an electronic apparatus comprising: a housing set with a circuit board mounted with a heating device therein and including a first vent hole formed on a prescribed outer surface to be located above said heating device and a second vent hole formed on an outer surface different from the outer surface formed with said first vent hole to be located below said heating device; a first duct arranged to extend from said first vent hole toward said circuit board; and a second duct arranged to extend from said second vent hole toward said circuit board, wherein an air flow route allowing flow of air between said first vent hole and said second vent hole is formed by said first duct and said second duct, at least a portion of the circuit board mounted with said heating device is arranged in said air flow route, and an opening allowing flow of air between said first duct side and said second duct side is formed on the portion mounted with said heating device of said circuit board in said air flow route, heat generated from said heating device is radiated from said first vent hole or said second vent hole through said air flow route, and said first duct and said second duct include first air flow portions arranged on said heating device sides and formed to extend in a direction substantially perpendicular to said circuit board, and second air flow portions arranged on said first vent hole side and said second vent hole side respectively and formed to be inclined by prescribed angles with respect to said first air flow portions, respectively.