Decoration lamp with pin joint multi-angle frame

The utility model relates to a decoration lamp with a polygon frame in pin connection. The utility model is proposed for providing a decorative lighting device which has the advantages of novel structure, convenient storage, long service life, less package material volume, low transportation cost and low warehouse cost. The decoration lamp with a polygon frame in pin connection comprises a plurality of lamp tubes which are rounded into a polygon frame, lamp bulbs which are respectively arranged in the lamp tubes, conducting wires which connect the lamp bulbs, and a convex angle movable joint and a concave angle movable joint which are assembled at a convex angle part arranged at the outer end part of the two adjacent lamp tubes and a concave angle part arranged at the inner end part of the two adjacent lamp tubes. The convex and the concave angle movable joints respectively comprise a left and a ring joint heads of which the opposite ends are pivoted. The reverse ends of the left and the right joint heads of the convex angle movable joint are respectively provided with tube slots which are inserted and connected by the outer end parts of the lamp tubes. The middle parts of the left and the right joint heads of the convex angle movable joint are respectively an angle limiting part. The reverse ends of the left and the right joint heads of the concave angle movable joint are respectively provided with tube slots which are inserted and connected by the inner end parts of the lamp tubes.