Self-ballasted electrodeless discharge lamp and the electrodeless discharge lamp lighting device

摘要

A bulb type electrodeless discharge lamp, comprising a recessed part ( 102 ), wherein the maximum diameter of a light emitting tube ( 101 ) is 60 to 90 mm and the tube wall load of the light emitting tube ( 101 ) is 0.07 to 0.11 W/cmSUP2/SUP, and a relation between the diameter Dc of the recessed part ( 102 ) and an interval Deltah between the top of the recessed part ( 102 ) and the top part of the light emitting tube ( 101 ) meets the requirement of Deltah=1.15xDc+1.25 [mm].