Cyclone dust collecting apparatus for vacuum cleaner

A cyclone dust collecting apparatus for a vacuum cleaner comprising:

• a first cyclone having an air suction hole through which dust-laden air is drawn-in, the first cyclone forcing the dust-laden air to form a first downwardly whirling air current in a space under the air suction hole so as to centrifugally separate dust from the dust-laden air;
• a second cyclone disposed inside the first cyclone, the second cyclone forcing semi-clean air entering from the first cyclone to form a second downwardly whirling air current so as to centrifugally separate fine dust from the semi-clean air;
• and
• an air guiding member forcing the semi-clean air discharged from the first cyclone to directly enter the second cyclone and, the air guiding member having a plurality of guiding blades radially disposed in at least one circular shape based on a vertical axis of the second cyclone,
• wherein the plurality of guiding blades forms a plurality of slots to simultaneously function as an air discharging opening of the first cyclone and an air entering opening of the second cyclone,
• wherein the plurality of guiding blades are disposed about a base, wherein the base comprises an inclined surface that assists in forming the first downwardly whirling air current.