Contrary to Hollywood propaganda, tubular lanterns are infinitely safer than any other non-electric artificial light source.  If a tubular lantern is tipped over, the balanced draft cuts off the air supply to the burner and extinguishes the flame within seconds.  With the advent of modern lamp oil and synthetic kerosene, both Hot Blast and Cold Blast lanterns are well suited for indoor use in ventilated areas.  Since the design of a Hot Blast lantern re-circulates spent air to the burner for more complete combustion, it has a slight edge over the Cold Blast Design, and a 10% greater efficiency rating.  For light output however, cold blast lanterns remain the best choice.