A surface on one side of {HEAD ~ the wiring board} is a device forming surface including the plurality of the LED chip groups, an external connecting terminal for leading out electrodes, and {TAIL ~ a wiring pattern} for electrical connection between the LED chip groups and the external connecting terminal 
A surface on one side of { HEAD ~ the wiring board } is a device forming surface including the plurality of the LED chip groups , an external connecting terminal for leading out electrodes , and { TAIL ~ a wiring pattern } for electrical connection between the LED chip groups and the external connecting terminal
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH