LED lamp heat dissipation structure

The invention provides an LED lamp heat dissipation structure. The LED lamp heat dissipation structure comprises a bulb shell, a lamp cap shell and a substrate thermally connected with LED light sources. The bulb shell covers the lamp cap shell, a cavity is formed between the bulb shell and the top of the lamp cap shell so as to contain the substrate, a first vent hole is formed in the bulb shell, second vent holes are formed in the lamp cap shell, a ventilating column is arranged at the top of the lamp cap shell and located in the cavity, the middle of the ventilating column is provided with a vertically-through airflow channel, the airflow channel of the ventilating column is communicated with the first vent hole and the second vent holes, part of the substrate is connected to the ventilating column, and at least part of the substrate stretches into the airflow channel of the ventilating column. The LED lamp heat dissipation structure has the advantage of being high in heat dissipation efficiency.