EL light emitting device includes a cylindrical EL light emitting unit and
a columnar power feeding unit. EL light emitting unit is composed such
that a cylindrical receiver coil is arranged and connected along an inner
circumferential face of the cylindrical EL light emitting element and
integrated into a single body by an outer cover member. The power feeding
unit is formed in a columnar shape whose diameter is smaller than an
inner diameter of EL light emitting unit so that the power feeding unit
can be inserted into the cylindrical EL light emitting unit. When the
power feeding unit is inserted into EL light emitting unit and the power
feeding unit is impressed with an alternating voltage, a high alternating
voltage corresponding to the turn rate of both coils is generated in the
receiver coil, so that light can be emitted from EL light emitting
element.