Triangular warning sign

A triangular warning sign having a structural shape of inner and outer equilateral triangles, the inner equilateral triangle having a fluorescent shining surface and the outer equilateral triangle having a plastic optical light-reflecting surface, said sign comprising:

• a triangular frame having frame edges with front and rear faces, respectively;
• plastic optical fully-reflecting strips secured on each front and rear face;
• three fluorescent plates inserted into slots on an inner side of the triangular frame to form double-faced fluorescent shining surfaces of an inner triangle;
• a counterweighed supporting plate having two ends positioned below the triangular frame;
• a narrow positioning insert block and at least one positioning pin integrated with a bottom edge of the triangular frame, wherein the narrow positioning insert block is inserted in a supporting legs fixed seat, and said at least one positioning pin is inserted in said counterweighed supporting plate;
• fixed cuffs for enveloping two ends of counterweighed supporting plate;
• and
• supporting legs hinged at the two ends of counterweighed supporting plate, respectively;
• wherein two lateral components of said triangular frame can be foldably rotated with the two fasteners at two ends of said bottom edge as rotating centers respectively;
• two tip portions of said two lateral components of the triangular frame are staggered and overlapped with each other, said tip portions are mounted with snap fasteners by fusion, by which the two lateral components can be engaged with each other;
• each of the two ends of said counterweighed supporting plate are provided with two hinge holes which can accommodate two supporting legs having a bent end;
• said counterweighed supporting plate cooperating with the fixed cuffs and restraining the supporting legs from rotating excessively;
• said counterweighed supporting plate and said triangular frame are adequately matched in weight, so that when put on a road they have a good stability against the wind.