How to choose the type & size of a large electronic sign display / sign / display?
1. Large electronic system for outdoor advertising
2. Large electronic system for sports (electronic sign displays at open stadium) & concert usage
First of all, you should consider the type of your stadium – open (outdoor) or closed (indoor).
If it is indoor, you should choose an inner system (either a rear-projection, or a projection, or a LED sign display / sign / display).
If the stadium is outdoor, you should go back to part 2.
The only specific feature is, that several purely informational signs are used in composition for displaying the score, time, etc.
Though there are displays that face the stadium during some sports events and are turned to the city (work as ad-sign displays, for example, in St-Petersburg) but it is determined by the location of the stadium in the city.
The use of assembling/disassembling systems is also possible
The choice of the sign display type (for a definite sign display size) – the up-to-date lamp, LED, LED cluster, etc. – depends on your financial opportunities.
The largest stadiums in the world have been generally equipped with LED cluster sign displays / signs / displays (even though they are very expensive). There are also examples of the use of up-to-date lamp systems at large stadiums (40-60 thousand spectators) – in the US & the UK. At first there were CRT sign displays installed at the stadiums (mostly in Socialist countries). Lamp sign displays prevail at smaller stadiums (20.000 spectators) in England and America because of their good quality and acceptable price (better than the quality of cheap LED or CRT sign displays).
The situation in South-Eastern Asia is a bit different:
Led-sign displays on dot-matrixes are installed at smaller stadiums (anyway they concede to cluster sign displays, but they are also much cheaper). LED cluster sign displays are installed at the biggest stadiums.