What material are the luminous characters on the roof generally made of?

Light-emitting characters on the roof are generally made of aluminum or steel, and led exposed lights are generally used as light sources. Led exposed lights are used on roofs and high floors. Many signboards also hide many human stories, which has become a major cultural feature of our country. Cover mainly represents different kinds of goods or services, also known as "line labels", which can be divided into images, logos and words. Chinese characters on the roof have certain requirements for resisting wind and earthquake, so it is certain that the steel structure base is indispensable. There are generally two forms of luminous characters, one is exposed luminous characters, and the other is foamed luminous characters; Exposed luminous characters have high brightness and convenient maintenance, but there are many light sources and few choices with good quality; The manufacturing process of blister luminous characters is mature, and the LED module with built-in light source has great selectivity.

At present, the only shortcomings are that the quality of power supply can not meet the requirements, there are not many high-quality brands, and there is no short circuit protection function. Once the low-voltage line is short-circuited, the consequence will be fire. Now there is a high-voltage 220V module, which is directly powered by 220V mains. The product comes with short circuit protection, 2.5W, which is suitable for the use of large characters on the roof. 1 square meter only needs about 20 yuan, which is really maintenance-free. At present, there are three kinds of luminous characters on the market: resin luminous characters, aluminum fiber luminous characters and exposed luminous characters. Generally, the size of roof characters is more than two meters! Yingmu.com has this information. Signboards are mainly used to indicate the name and mark of shops, also known as "shop signs", including horizontal signs, vertical signs, wall signs and sitting signs. The font size is engraved on doors, columns, eaves, walls or counters. Signboards are relatively fixed in form, but each word has its own merits. For example, Beijing's "Quanjude", "Liubiju" and "Tongrentang". The time-honored signboard has actually become the brand symbol of the operator, which has been passed down to this day, such as "Wang Mazi scissors" and "Dog ignores".