PURPOSE: To protect a pedestrian from muddy water while insuring see through property and gas permeability, and make a muddy water receiving panel fit to a beautiful view of a city.

CONSTITUTION: Louvered projections 4 of which upper parts are provided with upward openings 5 and the other parts are continues to a panel 1, are projectingly provided on the side of a roadway 2. Or Louvered projections 4 of which lower parts are provided with downward openings 5 and the other parts are continues to a panel 1, are projectingly provided on the side of a sidewalk 3. Or the louvered projections 4 of which upper parts are provided with upward opening 5 and the other parts are continued to the panel 1 are projectingly provided on the side of a roadway, and the louvered projections of which lower parts are provided with downward openings 5 and the other parts are continued to the panel 1, are projectingly provided on the side of a sidewalk. The louvered projections 4 can be arranged zigzag. Muddy water splashed obliquely upward from a road surface is hit on the vertical face of the panel 1, or on the recessed or projecting faces of the louvered projections 4, dropped as it is, and the splashed muddy water does not pass the openings 5 keeping the angle.