Pay attention to the connection distance of festive decorative lights: Generally speaking, the connection distance of festive decorative lights in the festive decorative lights series is 20 meters, and the connection distance of festive decorative lights in the series is 15 meters. If the connection distance is exceeded, it is easy to generate heat, and the service life will be affected during use. The glass tube can be colorless or colored, and the inner wall can also be coated with fluorescent powder.
Power connection mode: the general voltage of LED lamp band is DC 12V, which needs to be powered by switching power supply. The size of the power supply is determined according to the power and connection length of the LED light strip. If you don't want each LED light belt to be controlled by one power supply, you can purchase a high-power switching power supply as the total power supply, and then connect all the LED light belt input power supplies in parallel (if the wire diameter is not enough, it can be extended separately) and unified by the main switching power supply.
The outline of the city during the day is defined by the shape, color and shadow of the building edge. At night, the festival lights of the city clearly delineate the outline of the city, making it completely different from the surrounding areas. Looking at the city from a high place at night, the silhouette is complete and clear, which directly reflects the shape and scale of the city. After vacuuming, the lamp tube is filled with one or more inert gases such as neon, argon, helium, or a small amount of mercury.
Festive decorative lamp lighting project according to the color of tubular glass, the nature of fluorescent powder and the filled gas, you can obtain various festive lights with different light colors. The two ends of the festival decorative glass tube are equipped with copper electrodes, and the surface is chemically treated to prevent corrosion. The lead wire led out from the electrode and the power supply is called the lead wire, which is required to have the same thermal expansion characteristics as the glass. In order to prevent glass from cracking, nickel alloy is generally used.
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