Suction nozzle for a vacuum cleaner, comprising a dust flow display device

A suction nozzle for a vacuum cleaner having at least one of a suction wand and a suction hose, the suction nozzle comprising:

• a nozzle part having a suction mouth;
• a tubular connection part configured to connect to at least one of the suction wand and the suction hose;
• a dust sensor disposed in a dust-air stream inside an upward portion of the connection part, the dust sensor being insertable underneath a housing of the connection part through an opening formed on an upper side of the connection part so as to protrude into the dust-air stream near an upper wall area of the connection part;
• an indicating device having indicating elements indicating a dust flow, the indicating elements being disposed in a receiving chamber formed at the upper side of the connection part;
• and
• an electronic control device configured to analyze signals of the dust sensor and controlling the indicating device during operation.

A connection part for a suction nozzle of a vacuum cleaner, the connection part comprising:

• a first connecting portion disposed at a first side of the connection part and connectable to connector member of a suction nozzle;
• a second connecting portion disposed at a second opposite side of the connection part and connectable to at least one of a suction wand and a suction hose of the vacuum cleaner;
• a dust sensor disposed in a dust-air stream inside an upward portion of the connection part, the dust sensor being insertable underneath a housing of the connection part through an opening formed on an upper side of the connection part so as to protrude into the dust-air stream near an upper wall area of the connection part;
• and
• an indicating device having indicating elements indicating a dust flow, the indicating elements being disposed in a receiving chamber formed at the upper side of the connection part.