Large billboards have three main components: steel used to construct and support the frame, artwork that conveys the advertising[advertising?:advertising material cutting machine] message, and electrical equipment for lighting and other special effects.
Steel structure of billboard:
There are two types of billboards. Hand-painted billboards are usually used for small campaigns that want to create a special look. More often, billboards are produced from poster panels that are mass-produced copies of the original artwork.
stock items that are pre-made and stored in their warehouse awaiting a customer's order. Larger signs, or signs that have special design requirements like the ability to withstand severe weather or moving parts, must be custom ordered. After the design is finalized, the erection company orders the appropriate steel. Some common sizes and grades of steel are kept in stock and are quickly accessible. Unusual steel components, such as those designed for use in high wind conditions, must be specially ordered from the steel fabricators.
Artwork of billboard:
The steel frame is covered with a backing material, known as a facing. The artwork is affixed to the facing. The art is either preprinted on paper[paper?:paper sample maker cutting machine] or vinyl sheets that are pasted onto the facing, or in some cases, the art is painted directly onto a plywood or canvas facing. CUTCNC[CUTCNC?:cutting machine sample maker manufacturer] billboard cutting machine[cutting machine?:CUTCNC sample maker cutting machine] can cut the artwork shapes.
Electrical systems of billboard:
Most billboards are electrically lit and therefore require appropriate lighting and power systems along with a significant number of high wattage bulbs. Activation of these lighting systems is no simple matter. While many billboards are located in major metropolitan areas, others can be found in remote areas along interstates. In both cases, it is very impractical to have to travel to each sign every night to turn on the lights. Therefore, automatic switches have been developed to turn on the lights at specified times. Other systems use photosensitive cells to turn on the lights when dusk sets. Still other more advanced systems turn lights on and off electronically with a signal from a satellite system.
