What is the billboard on the highway bridge?

A kind of billboard has a very thick steel pipe column extending into the sky, shaped like an anti-aircraft gun, so people in the industry refer to it as anti-aircraft gun, also known as the column. Tianzhu.
1. Anti-aircraft gun is a type of outdoor billboard. Mainly refers to the erection of tall, eye-catching billboards next to major sections of roads, including expre ssways, urban highways, overpasses, etc.
2. Usually anti-aircraft guns have two sides, three sides, and a small number of four-sided anti-aircraft guns. .
3. The size of billboards is generally a 3:1 ratio, such as a conventional width of 6 meters long, 18 meters high and 18 meters high, a width of 7 meters long, 21 meters high and 21 meters high, and a width of 8 meters long and 24 meters high. 24 meters, and the height of the column should be adjusted appropriately according to the height of the road surface.
4. Anti-aircraft gun billboards are generally made of steel frame structures, steel pipes and angle irons. Nowadays, there are also a few grid structures. In a A rectangular or triangular card surface is installed on the column, and the card surface is covered with galvanized iron sheet or color steel plate. Anti-aircraft gun advertising Anti-aircraft gun is a type of outdoor billboard. It mainly refers to erecting tall and eye-catching billboards next to major sections of roads, including expre ssways, urban highways, overpasses, etc. Usually, anti-aircraft guns have two sides, three sides, and a small number of four-sided anti-aircraft guns. The size of the billboard surface is generally 3 to 1, such as a conventional width of 6 meters, a length of 18 meters and a height of 18 meters, a width of 7 meters, a length of 21 meters and a height of 21 meters, a width of 8 meters, a length of 24 meters and a height of 24 meters. It also depends on the road surface. Adjust the height of the column appropriately. Anti-aircraft gun billboards are generally made of steel frame structure, steel pipe and angle iron. Nowadays, there are also a few grid structure. A rectangular or triangular card surface is installed on a column, and the card surface is sealed with galvanized iron sheet or color steel plate. Make graphics or text on the card so that many people can see it to achieve the advertising effect.