To realize an illumination device in which adequate illumination performance is obtained in illumination equipment and highly reliable wireless communication is performed without impairing the outer appearance of the illumination equipment. An illumination device (100) is provided with an illumination module (1), a wireless communication module (2), and a power supply unit (3). The inductive reactance of coils (L1 L2, L3) at a carrier frequency (f) is set to a high impedance, whereby a circuit of the illumination module (1) functions, due to a first antenna part (A11) and a second antenna part (A12), as a dipole antenna circuit in response to a high-frequency signal, and functions as a circuit for causing light-emitting elements (LE1-LEn) to emit light in response to a DC-component signal.
