They are the standard gooseneck clamp-on 120VAC desk lamps (LOWES). I use the CFL bulbs in them to save energy... I think they do look pretty neat... Gives a nice glow around the sitting area reflecting back from the low branches above you and keeps all the big bugs over by the lights.... I just run an extension cord over from the camp power Pedestal 20AMP service receptacle.
Here is this photo you can see one pointing up and one pointing down on the lamp post at this camp site... Usually i have both pointing up into the trees... This camp site is Cloudland Canyon State Park in Trenton, GA in October with the leaves changing colors - beautiful place to be in October.