LED display device

The invention discloses an LED display device which comprises a box body, a plurality of back plates and an LED display panel, wherein the back plates are arranged on the box body; the LED display panel is arranged on the back plates; gaps are formed between the side wall surfaces of the two adjacent back plates; through the gaps, the stress dispersion effect between the back plates can be reduced; meanwhile, the gaps are arranged in a penetrating way between the two back plates; the gaps communicate with each other, so when air circulates through the gaps, inside heat can be discharged alongwith the air circulation; the gaps also achieve a heat radiation effect; and the heat radiation effect of the gaps is obvious. The stress dispersion between the back plates can be greatly improved. The gaps are connected in a communicating way; and the heat radiation effect on the back plates can also be improved. The LED display device has the advantages that the structure is simple; and the popularization is convenient.