noun
large video screen; jumbotron
Refers to a very large outdoor or stadium video display used for advertising, sports broadcasts, and public events. ビジョン here is wasei-eigo for 'video screen'.
駅前の大型ビジョンでニュースが流れていた。
The news was playing on the large video screen in front of the station.
スタジアムの大型ビジョンに選手の顔が映し出された。
The players' faces were shown on the stadium's jumbotron.