The ornamental design for a lamphead, as shown and described.
FIG. 1 is a perspective view of a lamp head according to the present invention;
FIG. 2 is first side view of the lamp head of FIG. 1;
FIG. 3 is a front view of the lamp head of FIG. 1;
FIG. 4 is a second side view of the lamp head of FIG. 1;
FIG. 5 is a back view of the lamp head of FIG. 1;
FIG. 6 is a top view of the lamp head of FIG. 1; and,
FIG. 7 is a bottom view of the lamp head of FIG. 1.
The dot-dash-dot broken lines immediately adjacent the shaded areas represent the bounds of the claimed design while all other broken lines are directed to portions of the article which form no part of the claimed design.