Abstract: A vacuum cleaner includes an electric air blower; a dust separator placed at an upstream side of the electric air blower and having a filtration filter for taking in dust-containing air sucked by the electric air blower and separating the dust from the air; and a dust accommodating section for accommodating the dust separated by the dust separator. The filtration filter includes a plurality of through-holes penetrating from an upstream surface at an upstream side to a downstream surface at the downstream side, and a central axis of the through-hole is inclined with respect to a normal line direction of a surface of the filtration filter.

Abstract: An electric vacuum cleaner includes electric blower for generating a suction force; dust separating unit, installed on an upstream side of the electric blower, for separating dust from air containing the dust suctioned by electric blower; dust collecting chamber for accumulating the dust separated by dust separating unit opened to dust collecting chamber; and humidifying unit, communicating to humidifying port, for generating air of high humidity; wherein humidifying unit supplies the air of high humidity from humidifying port to the dust accumulated in dust collecting chamber.

Abstract: A vacuum cleaner includes an electric air blower; a dust separator placed at an upstream side of the electric air blower and having a filtration filter for taking in dust-containing air sucked by the electric air blower and separating the dust from the air; and a dust accommodating section for accommodating the dust separated by the dust separator. The filtration filter includes a plurality of through-holes penetrating from an upstream surface at an upstream side to a downstream surface at the downstream side, and a central axis of the through-hole is inclined with respect to a normal line direction of a surface of the filtration filter.

Abstract: An autonomous driving apparatus includes: an obstacle detecting unit for detecting a presence of an obstacle or judging a distance to the obstacle; a driving unit for driving a main body; and a control unit for changing a moving direction of the main body by controlling the driving unit based on obstacle information from the obstacle detecting unit, wherein the control unit has a reciprocating mode in which the main body is reciprocatively moved within a moving area while being also moved in a direction normal to a reciprocating direction. If the control unit judges that the main body is in a movement-stuck state in which movement of the main body is stuck within a movement-stuck area by an obstacle placed in the moving area, the control unit switches the reciprocating mode to an obstacle avoiding mode in which the main body escapes from the movement-stuck area.

Abstract: An upright vacuum cleaner includes a main body, a floor nozzle unit, and a float plate or float unit. The main body has a motor fan for generating a suction force and a dust-collection chamber for collecting dust. The motor fan provides the suction force to the dust collection chamber. The floor nozzle unit is disposed under the main body. The floor nozzle unit has an inlet port connected to the dust-collection chamber for attracting dust on a floor into the dust-collection chamber by the suction force of said motor fan. The float plate or float unit is disposed on a lower face of the floor nozzle unit. The float plate or float unit includes a floor opposing face where an outlet port is formed for spouting discharge air to the floor from the motor fan. The float face is located around the outlet port to receive a lifting force produced by pressure of the discharge air between the float face and the floor to be cleaned.

Abstract: An upright vacuum cleaner has a float unit (29A) for lifting the upright vacuum cleaner during cleaning by spouting discharge air to a floor to be cleaned. The float unit (29A) has a floor-opposing face having a discharge-air outlet port (31) for spouting the discharge air of a motor fan (21).

Abstract: An upright vacuum cleaner has a floating function for lifting the upright vacuum cleaner in a cleaning operation by spouting discharge air flow to a floor to be cleaned, and at least a suction-air inlet port for sucking air with dusts is arranged at an outer portion of a bottom face of a floor nozzle unit of the upright vacuum cleaner.

Abstract: The electric blower comprises an impeller of the centrifugal type driven by a motor, a diffuser having a plurality of divergent passages into which air flow discharged from said impeller flows, an air guide having a return passage subsequently directing said air flow from said divergent passages into the interior of said motor, and a casing housing therein said impeller, said diffuser and said air guide. Each guide wall of said air guide defining said return passage includes an inner guide wall section, an outer guide wall section and a space interposed between each inner guide wall section and the corresponding outer guide wall section, an opening being formed at the inner terminal end of each space.