​WHAT ARE EXPLOSION PROOF LAMPS FOR?

Generally speaking, explosion proof lamps make sure that no hazardous ignition can take place, cause by their technical features, the materials they are made of, or the design of the explosion proof lamps. 
 
So in fact the term 'explosion proof lamps', suggesting that the lamps themselves can withstand any form of explosion, is not really appropriate, although the sturdiness and solidness of the lamps are such, that they will be able to cope with a tremendous amount of external force without losing their functionality or safety features.