Sprinkler head

The design is the visual features of the SPRINKLER HEAD shown in solid lines in the drawings, whether those features are features of one of shape, configuration, ornament or pattern or are a combination of any of these features. The broken lines in the drawings form no part of the claimed design.Drawings of the design are included.In the drawings:Fig. 1 is a top perspective view of a SPRINKLER HEAD in accordance with said Industrial Design;Fig. 2 is a front view thereof;Fig. 3 is a rear view thereof;Fig. 4 is a right side view thereof;Fig. 5 is a left side view thereof;Fig. 6 is a top view thereof; and,Fig. 7 is a bottom view thereof.