Wireless power feeding system having battery mounted device engaged with power receiving device with light unit mounted device

A composite wireless power feeding system comprising two wireless power feeding systems including:

• a first wireless power feeding system that includes
• a first power feeding coil generating electromagnetic waves,
• a first power feeding circuit unit supplying power to cause the first power feeding coil to generate the electromagnetic waves,
• a first power reception coil receiving the electromagnetic waves emitted from the first power feeding coil by electromagnetic induction,
• a first power reception circuit unit recovering energy generated in the first power reception coil, and
• a first battery storing the energy recovered by the first power reception circuit unit, and
• that charges the first battery by supplying electric energy by electromagnetic induction using a phenomenon in which the first power feeding coil and the first power reception coil resonate at a predetermined resonance frequency;
• and
• a second wireless power feeding system that includes
• a second power feeding coil generating electromagnetic waves,
• a second power feeding circuit unit supplying power to cause the second power feeding coil to generate the electromagnetic waves,
• a second power reception coil receiving the electromagnetic waves emitted from the second power feeding coil by electromagnetic induction,
• a second power reception circuit unit recovering energy generated in the second power reception coil, and
• an energy consumption circuit unit consuming the energy recovered by the second power reception circuit unit, and
• that supplies energy to the energy consumption circuit unit by supplying electric energy by electromagnetic induction using a phenomenon in which the second power feeding coil and the second power reception coil resonate at a predetermined resonance frequency, wherein
• the first power reception coil is configured as a wireless power reception/feeding coil that also serves as the second power feeding coil,
• the first battery is used as a power source that causes the second power feeding coil to generate the electromagnetic waves,
• the second power feeding circuit unit and the first power reception circuit unit are mounted on one circuit board, and configured as a power reception/feeding circuit unit in which switching between a power feeding mode and a power reception mode is performable by predetermined mode switching means,
• in a case where the power feeding mode is activated by the mode switching means, the second power feeding circuit unit is activated and outputs electromagnetic waves from the wireless power reception/feeding coil toward the second power reception coil to supply energy to the energy consumption circuit unit, and
• in a case where the power reception mode is activated by the mode switching means, the first power reception circuit unit is activated and recovers energy generated in the wireless power reception/feeding coil to charge the first battery by electromagnetic induction of the electromagnetic waves emitted from the first power feeding coil.