Fujitsu Corporation

Tomoki Harada

Masatoshi Nishizawa

Goro Nakagai

Toyohiro Kato

Masuo Ohnishi

Tadanori Tachikawa

Masahiko Hattori

A fan is enclosed in the enclosure of an electronic apparatus. The fan discharges air out of a ventilation opening of the fan. Heat radiating fins are located in an air passage extending from the ventilation opening. A dust catcher is removably mounted on an outside surface of the enclosure into an opening of the enclosure. The dust catcher is located in the air passage between the heat radiating fins and the ventilation opening. The dust catcher serves to catch the dust in the air passage. The dust catcher is removed from the enclosure along with the dust.

Electronic apparatus including removable dust catcher

The inventors have revealed that the actual rotation speed of the rotor in a fan structured as a centrifugal fan exceeds the designated rotation speed if the ventilation opening of the centrifugal fan is occluded. If a larger amount of dust accumulates at the ventilation opening of the centrifugal fan, for example, the actual rotation speed of the rotor in the centrifugal fan exceeds the designated rotation speed by a predetermined deviation. The accumulation of dust at the ventilation opening can in this manner be observed in a facilitated manner. The occlusion of the ventilation opening can thus be detected.

Fan unit and electronic apparatus and method of controlling the same

A plurality of mouse input operations are switched according to the touching time period against a touch panel. Therefore, it is possible to carry out processing corresponding to a plurality of mouse input operations, selectively, by means of a single input operation, namely, a touch input operation, thereby improving the ease of operation. Furthermore, in the present invention, the direction of scrolling of a screen can be switched according to the touching time period against a touch panel. Consequently, it is possible to perform upward scrolling and downward scrolling, selectively, for example, by means of a single input operation, namely, a touch input operation, thereby improving the ease of operation.

Growing community of inventors

Kawasaki, Japan

Tomoki Harada