This trend is difficult to carry to outdoor advertising. Sometimes these signs are located in buildings on the doors of the office of the company. Since they are considered close, and then drawing the letters and logo must pick out a high resolution. Bent on the design of neon tubes are unlikely to solve this problem, given the diameter of the tubes (not less than 10 mm) and material of these tubes (glass). Therefore, these tasks are entrusted designer-artist who works in the genre of fluorescent painting. Luminescence excitation light is painted a light source emitting in the ultraviolet spectral region. Fluorescent colors in contrast to conventional and even have additional features associated with the fact that most of the ultraviolet radiation absorbing the outermost layer of paint, but in ordinary painting also defines the outer layer of paint the strongest component of the color.
So when choosing a source of illumination should be taken care of and that was not broken conceived palette image. Illumination of such signs is a challenge. Bulky UV lamps will just deface the sign, so for these purposes are used compact UV LEDs. Sometimes visible (blue) part of the radiation of the diodes degrades the color palette, and you have to go to the use of LEDs in which the visible portion of the spectrum is completely absent. The use of LEDs in signs advertising allows you to avoid high voltage (about a thousand volts) applied to the traditional neon tubes, which is important, given the application at the office door. In addition LEDs offer wide scope for creating dynamic effects, and unlike the neon is achieved is less expensive and means available.