Structure of warning sign

An improved structure of warning sign comprised of two warning plates, two pivot axles and a plurality of light reflexible sheets, wherein:

• said two warning plates each is in the form of a plain plate, the inner sides of two lateral edges on a top end of each said warning plate are provided each with a recess, a bevelled edge is provided above each said recess, and two lateral engaging platens are provided under said two recesses of each said warning plate, one of said lateral engaging plates of each said warning plate is provided inside thereof with a protruding engaging spot and the other lateral engaging plate of said warning plate is provided inside thereof with a plurality of arciform dents, each of said warning plates is provided on the inner side thereof with a pair of engaging plates with a wider spacing and a pair of engaging platens with a narrower spacing, all said engaging plates are provided each with a pivot hole, a square window like hole is provided between said engaging plates with wider spacings and said engaging plates with narrower spacings, said lower portion of each said warning plate is formed two legs;
• said pivot axles each is in the shape of a round rod and is provided on a front end thereof with a recessed axle portion having a connection hole;
• the remainings are said light reflexible sheets;
• by providing the above parts in assembling, said two warning plates are connected to each other, said engaging plates with narrower spacings on said inner sides of said warning plates are engaged respectively with said engaging plates with wider spacings, said lateral engaging plates of said warning plates are mutually abutted against their corresponding ones of said lateral engaging plates, said protruding engaging spots on said lateral engaging plates on one of said warning plates are engaged in said arciform dents of said lateral engaging plates on the other of said warning plates to increase stability of said warning plates, then said pivot axles are extended respectively through said pivot holes of all said engaging plates on the inner sides of said two warning plates, so that said recessed axle portions of said pivot axles are engaged in said pivot holes and said warning plates are connected to form said warning sign stand which is capable of opening and closing conveniently, said light reflexible sheets are provided on the exterior surfaces of said warning plates to increase the total area and thus an effect of warning of said light reflexible surfaces of said warning sign stand.