An
LED illumination device includes
LED lamp modules 34 coupled in a vertical direction. Each of said
LED lamp modules 34 includes a base 12, a
bus bar circuit 35 formed on the base 12, and a cover 25 connected to the base 12 to cover the
bus bar circuit 35. A locking frame 14 (
coupling portion) to be coupled with the upper
LED lamp module 34 is formed on said base 12. A locking arm 32 (
mating coupling portion) to be coupled with said locking frame 14 on the base 12 of the lower LED lamp module 34 is formed on said cover 25. Further, a guiding groove 18, into which said locking arm 34 is inserted, is formed on said base 12 near the locking frame 14, and a guiding hole 27, into which said locking frame 14 is inserted, is formed on the cover 25 near the locking arm 32.