EMB ERJ 145 ER/LR
Flight Crew Air Transport Pilot (ATP)
Distraction
Inflight Event / Encounter Other / Unknown
General None Reported / Taken
Airport; Environment - Non Weather Related
On short final to runway 27R at KORD; there is an LED light advertisement sign.  During nighttime operations; the light from this sign can be very bright; especially with mostly white light projecting from the sign.  It was observed to be most prominent from the First Officer's seat. Although our flight landed without incident; I believe it is a safety concern that needs to be addressed.
EMB-145 Captain reported a very bright LED advertisement sign on final approach to Runway 27R at ORD. He stated that the sign is a potential safety hazard.