I constructed myself an UV box a few months back, with the help of Loris from APUG. The thing about the bulb is you are looking for a BL365 ( Blacklikght in365 nm wavelength ). The bulb from the amazon says it is for ambient lighting and it is purple. BL365 bulbs produce blue blacklight. It is UV-A light and it is hazardous to stare at them or being exposed to them for long.

This one suits your needs. Look for the wavelength, BL365
http://www.alibaba.com/product-gs/52...ent_Lamps.html

Regular light bulbs are E27 socket and I don't think you can blow it up buy using these bulbs. They are usually 20W bulbs, but check your current bulbs Watt in the light box to make sure.

Edit:
BTW mosquito trap bulbs might work too. They are BL350.