| 摘要 |
<p>PURPOSE: To cool the surface of a heat generating element and an input device such as a keyboard below specific temperature even when the portable personal computer has the high heat generating element mounted in a flat housing equipped with the input device. CONSTITUTION: A 1st space is formed between the back of the operation part of the keyboard and an electronic circuit board 2 and the surface where the high heat generating element 1a mounted on the electronic circuit board 2 is installed on a different surface from the surface facing the input device; and a 2nd space is formed of the electronic circuit board 2 and an electronic circuit board 3, and a fan 4 is installed in the housing 30 so that cooling air flows from the 1st space to the 2nd space. On the wall surface of the operation part of the input device, a flow passage is constituted which makes outside air flow in the housing 30 through a suction hole 8.</p> |
