Neon lights are bright and luminous, energized glass tubes or bulbs filled with rare neon gas or other rare gases, and are cold cathode gas discharge lamps. The neon tube is a sealed glass tube with electrodes at both ends, which is filled with some low-pressure gas. A voltage of several thousand volts is applied to the electrode, and the gas in the ionization tube causes it to emit light. The color of the light depends on the gas in the tube. Neon light is the transliteration of neon light. Neon, a rare gas, emits a popular orange-red light, but the use of other gases will produce other colors, such as hydrogen (red), helium (pink), carbon dioxide ( White), mercury vapor (blue), etc.