Abstract: A water sprinkler includes a housing and an ejection head. An impeller is assembled in the housing, pushed by water, and connected to a cam. A water-hit target is pivoted with the housing via a compression spring, and an impacted portion of the water-hit target is extending outside of the housing. The water-hit target repeatedly impacts the housing because of the pivoting motion caused by the pushing of water flow and by the pulling of the compression spring, so that the housing is pivoted to change the ejection direction of the ejection head. A water baffling cover is pivoted with the housing. A abutted member is assembled on the water baffling cover and abutted against the cam. The cam can push the abutted member to drive the pivoting motion of the water baffling cover, so that the water baffling cover shields the ejection head by different extents.

Abstract: A sprinkler structure includes a base with a rotatable stripe-shaped pipe and spraying pipes installed on the stripe-shaped pipe. The stripe-shaped pipe has an end connected to the base through a hollow shaft which has an outlet pipe, and the other end connected to the base through a pipe plug. A water fetching device is installed at an end of the base for driving the stripe-shaped pipe to rotate and includes a sleeve sheathed on the hollow shaft. A water fetching target is installed at an upper end of the sleeve and near the outlet of an outlet pipe. The base has an inlet pipe interconnected with the hollow shaft, the outlet pipe and the spraying pipe, and further has a conversion device for controlling the water fetching device to rotate in a forward or reverse direction.

Abstract: A warning device for determining water flow status includes a main body having a flow channel penetrating through both ends of the main body and an opening on a side of the main body, and an intersection of the flow channel and the opening define a working chamber. The working chamber includes a power generating device with a pivoting turbine blade and a light emitting element. The turbine blade is pushed by water flow to generate electric power to the light emitting element to emit light. The power generating device includes a flow diverting element having a slot compartment formed by a shaft cover and a sidewall, and the turbine blade is disposed therein. A plurality of flow diverting holes are disposed on the flow diverting element for flowing water into the slot compartment to push and move the turbine blade.