As long as you only want one (or a small number of them) something like this from one of my favorite surplus places may do. You need to watch the shipping on it as US postal rates are pretty high but they have some neat stuff, it tends to sell out quickly (at least sometimes) and then be no longer available and data on how to hook it up is often either non existent or sketchy. (although this particular one looks pretty easy) :
http://www.goldmine-elec-products.com/prodinfo.asp?number=G18420
Ebay is another potential source although I didn't see anything that good in a quick search. If the logo isn't changing a panel will be cheaper and easier to hook up than any of the displays.
Peter