Abstract: Users of the portable phone 10 are allowed to promptly select and execute desired functions. A problem solution support apparatus 100 for supporting problem solutions for users of electronic device 10 based on user input on how to use the device.

Abstract: A problem solving support apparatus 100 for supporting problem solving for users of an electronic device 10 based on user input on how to use the device. The device includes: a related icon storage section 120 which stores a plurality of icons, which are images having appearance conceptually associated with at least a part of an entry word, in association with the entry word which specifies problem solving functions of the electronic device; a candidate icon display section 110 which displays at least a part of the plurality of icons that are candidates for accepting selections from outside on a screen; and an entry word extract section 130 which refers to the related icon storage section 120 to extract the entry word and display the extracted entry word based on combinations of two or more icons when the two or more icons are selected from the icons on the screen displayed by the candidate icon display section 110.

Abstract: A dust discharging apparatus suitable for use in a dust collector, which comprises series-connected upper and lower dust shoot chambers, each having a swingable discharging valve device to close and open its ceiling opening. In order to prevent dust coating on the seal members of the swingable valves and the wear of same, the swingable valve device uses a downstream-convergent throttle ring, a swingable concave pan-like valve and an upstream divergent bucket fixed to the concave plate. The upper chamber has an exhaust pipe to communicate with the dust hopper, and a suction pipe to permit the chamber to open to the surrounding atmosphere to prevent dust backflow when transferring the dust from the dust hopper to the upper chamber and then from the upper to lower chamber.