Composite LED packaging structure beneficial to heat dissipation

The composite LED packaging structure comprises a lampshade, a plurality of evenly-distributed LED lamp caps are installed at the bottom of the lampshade, the interiors of the LED lamp caps are each fixedly connected with two leads and a heat transfer tube, the heat transfer tubes penetrate through the LED lamp caps and are fixedly connected with a heat dissipation disc, the outer wall of the heat dissipation disc is fixedly connected with a plurality of heat dissipation fins, and the heat dissipation fins are fixedly connected with the LED lamp caps. The two leads are respectively connected to two stages of a power supply, the LED lamp holder generates heat in the vacuum bulb, the heat is transferred to the epoxy resin packaging layer, the heat transfer tube is located on the lower side of the vacuum bulb but not connected with the outer wall of the vacuum bulb, and the heat transfer tube can absorb heat generated by heat radiation nearby and can also collect heat in the epoxy resin packaging layer. The heat