Patent ID: 7948001

Claim:
An LED lighting fixture comprising: a light-emitting device that includes an LED chip, a heat transfer plate made of a thermally conductive material and having one side on which the LED chip is mounted, a sub-mount member interposed between the LED chip and the heat transfer plate, a wiring board having on one side a patterned conductor for supplying an electric power to the LED chip, being bonded to an LED chip mount-side of the heat transfer plate, and being formed with an exposure part through which the LED chip mount-side on the heat transfer plate is exposed, an encapsulation part in which the LED chip is encapsulated on the one side of the wiring board, and a dome-shaped color-changing member formed with an optically transparent material and a fluorescent material excited by light emitted from the LED chip and emitting light of a color different from a color of the light emitted from the LED chip, and placed to surround the encapsulation part on the one side of the wiring board; a metal fixture body on which the LED chip-containing light-emitting device is held; and an insulating layer having electrical insulating properties and being interposed between the heat transfer plate and the fixture body to thermally couple the same, wherein the light-emitting device is bonded to the fixture body with the insulating layer interposed therebetween, a surface area of the sub-mount member is larger than a surface area of the LED chip, and a rim of the sub-mount member is placed outside the boundary of a truncated cone shape having an upper base formed by a circular perimeter of a sub-mount member-facing surface of the LED chip and a lower base formed by a circular perimeter of a bottom surface of the heat transfer plate.