The ornamental design for a userinterface for a welding helmet, as shown and described.
FIG. 1 is a perspective view showing an embodiment of the new design for a user interface for a welding helmet;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof;
FIG. 8 is a perspective view showing another embodiment of the new design for a user interface for a welding helmet;
FIG. 9 is a front view thereof;
FIG. 10 is a rear view thereof;
FIG. 11 is a left side view thereof;
FIG. 12 is a right side view thereof;
FIG. 13 is a top view thereof;
FIG. 14 is a bottom view thereof;
FIG. 15 is a perspective view thereof in use; and,
FIG. 16 is another perspective view thereof in use.
The broken lines in the figures depict portions of the user interface for a welding helmet that form no part of the claimed design. The broken lines in FIGS. 15 and 16 depicting a welding helmet and face shield represent environmental subject that forms no part of the claimed design. The shading is provided to illustrate contour only and is not an indication of texture, gloss, etc.