Every user care to answer led question on the service time. it’s obvious that the led service is more long than traditional lamp. the reason is the led will not produce blow the fuse. and it won’t directly stop work, the led would progressively deteriorate by time fly. through we had repeatedly test, the excellent quality led can work more 50,000 hour constantly. 50,000 hour after, the luminous intensity does only one-third. but it  could at least make lit. how to make more long work time for led? the answer is dissipate heat. This is not a good solution for led service time.