Cooling device for cabinet with two-way air inlet and side air outlet

The cooling device comprises an outer shell, the outer shell is composed of a rear shell and a front shell, a partition plate is installed in the middle of the inner side of the rear shell, the upper space and the lower space of the inner side of the rear shell are divided into an air inlet cavity and an air outlet cavity through the partition plate in the rear shell, air inlet holes are formed in the two side walls of the air inlet cavity, and air outlet holes are formed in the two side walls of the air outlet cavity. A volute fan is installed on the inner side of the air outlet cavity, the air outlet end of the volute fan penetrates through the side wall of the rear shell, an air outlet hole is formed in the position, corresponding to the air outlet end of the volute fan, of the side wall of the front shell, a rainproof cover is installed at the position, located at the air outlet hole, of the side face of the front shell, and a flow guide plate is installed at the position, facing an opening of the front s