LED display screen freezes in winter

LED display in the northern winter sometimes encounter some difficult problems, such as: outdoor display cabinet circuit boards every evening to the morning on a layer of frost. Lead to housing short circuit, or display screen garbled flowers, etc. Against the problem of LED screen of choose and buy when the IP level must reach more than 5 or 6. Only enough to prevent moisture from entering the waterproof and dustproof level. If you can only open the tuyere has been installed to should solution problem.