As temperatures drop neon signs lose their luminosity and appear dull. This is due to the effect that cold temperatures can have on gases. However, neon is an inert gas, so it is not to blame. Neon is in the most liquid range of -248.45 to -245.95 degrees Celsius (-415.21 to -410.71 degrees Fahrenheit) This means that the gas is insensitive to cold temperatures.
The neon signs that are affected by temperature changes are created by the combination of gases and neon. Neon and Argon, are the most commonly used gas used in the production of neon signs. According to the literature, neon can withstand frigid temperatures. Argon can react strongly in cold temperatures. In the end, neon lights made of Argon gas may dim or flicker, or shut off as temperatures drop.
LED Neon signs make use of neon gases which work best in warmer temperatures. Research has proven that electricity produces heat. If a neon sign’s gas is contained in tubes, and later struck by an electric source, it releases heat. The process is interrupted by cold temperatures that can cause neon signs to turn dull or pinkish when it is too cold.
Do you have a solution?
It doesn’t matter if the neon sign dims or flickers in cold weather. It’s still functional even when it’s warm. There are now neon signboards with dark sign cabinets. They have fluorescent lamps which warm the neon sign during colder weather.