Combined strip-shaped radiating fin

The utility model discloses a combined type strip-shaped cooling fin which comprises a main cooling plate, an installation plate is connected to the main cooling plate, rotating shafts are installed at the four corners of the installation plate, telescopic rods are arranged on the outer sides of the rotating shafts, installation screw holes are formed in the ends, away from the rotating shafts, of the telescopic rods, main inserting plates are installed on the side edges of the main cooling plate, and the main inserting plates are connected with the main cooling plate. A heat dissipation fin mechanism is mounted on the surface of the main heat dissipation plate; and the first extension heat dissipation plate is located on the side edge of the main heat dissipation plate, a second extension heat dissipation plate is arranged on the side, away from the first extension heat dissipation plate, of the main heat dissipation plate, and a clamping groove is formed in the side, away from the main insertion plate, of t