A tanning bed or sunbed is a device emitting ultraviolet radiation (typically 97% UVA and 3% UVB, +/-3%) used to produce a cosmetic tan. There are a few units called "high pressure" beds that generate primarily UVA with some UVB but these are much less common and much more expensive. Regular tanning beds use several fluorescent lamps that have phosphor blends designed to emit UV in a spectrum that is somewhat similar to the sun.
http://tanningbeds.mercola.com/tanning-beds/vitality-tanning-bed.aspx
A machine used for tanning skin. Emitting only the right amount of UV rays which is good substitute for sunlight exposure.