Wavelength conversion device, light source device, and projector

A wavelength conversion device comprising:

• a rotating body having a disk-like shape;
• a wavelength converter having a plane of incidence and an exit surface, and disposed in a portion at circumferential edge side of the rotating body so as to form a ring-like shape centering on a rotational axis of the rotating body, excitation light entering the plane of incidence, the exit surface being arranged at an opposite side to the plane of incidence, and the exit surface emitting converted light obtained by performing a wavelength conversion on the excitation light;
• and
• a motor configured to rotate the rotating body, wherein
• the rotating body includes a vapor chamber,
• the vapor chamber includes a sealed container configured to contain a working fluid changing in phase between a vapor phase and a liquid phase,
• the sealed container includes
• a heat receiver which is arranged in an outer circumferential part of the sealed container, and which is configured to receive heat of the wavelength converter, and
• a heat dissipater which is arranged at the rotational axis side of the heat receiver, and which is configured to release the heat received by the heat receiver,
• the working fluid in the liquid phase is changed to the liquid phase due to the heat received by the heat receiver, and
• the working fluid in the vapor phase is condensed by the heat dissipater,
• the rotating body includes a substrate having a disk-like shape,
• the wavelength converter is arranged at a circumferential edge side of the substrate in the substrate,
• the heat receiver is disposed at a position closer to the rotational axis of the substrate than an incident area which the excitation light enters of the wavelength converter,
• the motor is arranged at an incident side of the excitation light with respect to the substrate,
• the vapor chamber is arranged at the incident side of the excitation light with respect to the substrate,
• the vapor chamber has a through opening configured to penetrate the vapor chamber along the rotational axis, and
• the motor is coupled to the substrate through the through opening.