LIGHTING DEVICE

PROBLEM TO BE SOLVED: To achieve efficient radiation of heat generated at LEDs with the use of a resin-made case endowed with a heat radiation function.SOLUTION: At a small-diameter end of a case 11 formed in a shape gradually increasing in diameter size from the small-diameter end up to a large-diameter another end, a base 16 supplying power from a power source is attached, and at the another large-diameter end, an LED module substrate 13 structured by mounting a plurality of LEDs 12 on a substrate 121 is attached. Inside a storage part 111 formed in the case 11, a lighting circuit board 15 which has an input part electrically connected to the base 16 and output part electrically connected to LEDs 12, and which is mounted with a lighting circuit for lighting the LEDs 12, are housed. A translucent globe 14 is attached for covering the LED module substrate 13 and diffusing light emitted from the LEDs 12. As a material of the case 11, a resin containing a carbon-based filler of a high thermal conductivity is used.