As T-Sauer said. Either get rid of, or get a cage for the Bulb. If the Snake touches that, it will burn itself. I have a Ceramic Heat Emitter with a cage in my big vivarium to keep the ambient perfect, as well as a Heat Mat run in conjunction with a thermostat, which is a must have.
This is what I mean by cage: http://www.888reptiles.co.uk/2318.html