| 摘要 |
<p>A warning device for the presence of fog is described, comprising: a containing box (2A); a bar (2) connected to a rod (IA) to form a balance; an interrupted terminal having a first end (3) and a second end (6); a first button (4) placed on the first end (3) of the terminal; a second button (5) placed on the second end (6) of the terminal and adapted to operatively contact the first button (4) in order to close an electric circuit between the interrupted terminal and warning means; a body made of an upper cone (7A) projecting outside of the box (2A) and of a lower cone (7B) contained inside the box (2A) and connected to the upper cone (7A); a first cup (8) adapted to receive water that drops from the lower cone (7B); a spiral-shaped duct (9) for the slow downward flowing of the collected water; and a second cup (10) adapted to receive water that goes out of the duct (9) and, through a small tube (11), is discharged outside the box (2A).</p> |
