This is the same place as the Neon Boneyard, the "museum" is really just the gift shop and where you meet to start the tour of the Boneyard. Yelp should really merge the two. I am going to paste my review for the boneyard below, because they are really the same place.
Super fun idea for family or even a chill date night. I was impressed with how they have the yard set up, the signs are arranged along a path you walk along with a tour guide, most of them are nonfunctional but they illuminate them with spot lights at night. I think you could go at any time of day and it would be fun, we chose evening/night and it was cool, but since not all signs are lit daytime would be cool as well. The tour guides are great and give fun little anecdotal stories for most of the signs.