MACHINED TACK, HOLLOW BODY INSTALLED TO IT FOR FACILITATING VISUAL RECOGNITION, AND DRIVING DEVICE FOR MACHINED TACK

摘要

PROBLEM TO BE SOLVED: To provide a tack manufacturable by an easy manufacturing method requiring no large-scale renewal and the like of equipment especially and driven into a slope, a ground, concrete, a rock base and the like principally for realizing improvement of visibility, designation of an area, attraction of attention, enhancement and the like of the slope, round, concrete, and rock base by artistic expression. SOLUTION: As this hollow body attached to the upper part of the tack driven into the slope, round, concrete, rock base, and the like in use for facilitating visual recognition, a hollow body having an inside face painted with a fluorescent pigment or a luminous pigment is used, and in a part of it, a screw structure is provided for attachment/detachment to/from the machined tack. In the driving device for the tack, an attachment is provided with a clearance for protecting the screw structure used for installing the hollow body facilitating visual recognition on the upper part of the tack.