Circle ring light/lamp with fuse?
It looks like a circular fluorescent lamp. The electrical connections are out of camera range to the right. They come in several sizes and should be available in any good lighting store.
What do you want it for? There just might be options that forum members can suggest.
Living and loving it in Bangkok, Thailand. Canon 7D - See the gear list for the rest.
|IMG_8168ABCD by citori525|
|McKinley meadow by TimR32225|
from Natural meadows
|_DSC2146 by jerste|
from Helios-44 II
|Leopoldsteinersee by RaCor|
from Landscape - Colour #3