The ornamental design for a robotnavigationbeacon, substantially as shown and described.
FIG. 1 is a front perspective view of a robot navigation beacon showing our design.
FIG. 2 is a front view of the robot navigation beacon of FIG. 1.
FIG. 3 is a back view of the robot navigation beacon of FIG. 1.
FIG. 4 is a left side view of the robot navigation beacon of FIG. 1.
FIG. 5 is a right side view of the robot navigation beacon of FIG. 1.
FIG. 6 is a top view of the robot navigation beacon of FIG. 1.
FIG. 7 is a bottom view of the robot navigation beacon of FIG. 1.
FIG. 8 is another front perspective view of the robot navigation beacon of FIG. 1, but shown with different broken line subject matter.
FIG. 9 is a front view of the robot navigation beacon of FIG. 8.
FIG. 10 is a back view of the robot navigation beacon of FIG. 8.
FIG. 11 is a left side view of the robot navigation beacon of FIG. 8.
FIG. 12 is a right side view of the robot navigation beacon of FIG. 8.
FIG. 13 is a top view of the robot navigation beacon of FIG. 8; and,
FIG. 14 is a bottom view of the robot navigation beacon of FIG. 8.
The dash-dash broken lines illustrate portions of the robot navigation beacon. The dash-dot broken lines represent the bounds of the claim. The broken lines form no part of the claimed design.