The ornamental design for a divider of lightbar, as shown and described.
FIG. 1 is a perspective view of a divider of lightbar showing my new design;
FIG. 2 is a front view thereof, the rear view being mirror symmetrical;
FIG. 3 is a left view thereof, the right view being mirror symmetrical;
FIG. 4 is a top view thereof;
FIG. 5 is a bottom view thereof; and,
FIG. 6 is a perspective view showing an in-use position.
In FIGS. 1-5, the broken lines depict portions of the divider of lightbar the form no part of the claimed design. In FIG. 6, the broken lines depict environmental structure that forms no part of the claimed design.
The separation and bracket indicate, for ease of illustration, that the precise length of the divider of lightbar is not claimed.