Showerhead

A shower head, comprising a hollow body (10) having an inlet nozzle (11) connectable with a water supply pipe, and a lower wall (12) defined by a sieve (C) perforated by a plurality of holes (13);

• cleaning means (40) mounted in an interior of the hollow body (10), carrying a plurality of downwardly projecting pins (41) and displaceable between an inoperative position in which the plurality of pins (41) are spaced from the plurality of holes (13) in the sieve (C), and an operative position in which each of the plurality of pins (41) is introduced in a respective hole (13) of the plurality of holes in the sieve (C) and defines at least one outlet (S) with the respective hole (13);
• a conical seat (70) provided in the interior of the hollow body (10) and having an outer end (71) maintained in a constant fluid communication with the inlet nozzle (11), and an inner end (72) open to the interior of the hollow body (10), driving means (50) having a piston (51) provided with a base end (51a) affixed to the cleaning means (40) and a top end (51b) cooperating with the inner end (72) of the conical seat (70) in the inoperative position of the cleaning means (40) retaining the cleaning means (40) in the inoperative position thereof when a hydraulic pressure in an interior of the inlet nozzle (11) and the conical seat (70) upstream of the piston (51) is less than a reference value, and displacing the cleaning means (40) to the operative position thereof when the hydraulic pressure reaches the reference value;
• and biasing means (60) mounted in the interior of the hollow body (10) displacing the driving means (50), together with the cleaning means (40), to the inoperative position of the cleaning means (40) when the hydraulic pressure is less than the reference value.