Light source device and projector

A light source device comprising:

• a first light source configured to emit first light in a first wavelength band;
• a wavelength conversion element configured to convert the first light into second light in a second wavelength band different from the first wavelength band;
• a first optical member disposed between the first light source and the wavelength conversion element and configured to transmit the first light and reflect the second light;
• a first light guide disposed between the wavelength conversion element and the first optical member and configured to guide the second light converted by the wavelength conversion element;
• a first reflecting member configured to reflect the first light and the second light;
• and
• a support member configured to support the wavelength conversion element, wherein
• the wavelength conversion element includes a first surface on which the first light is incident via the first optical member and the first light guide, a second surface and a third surface crossing the first surface and facing respective sides opposite to each other, and a fourth surface and a fifth surface crossing the first surface, the second surface, and the third surface and facing respective sides opposite to each other,
• the first reflecting member is disposed in a region at the second surface side of the wavelength conversion element and at the second surface side of the first light guide,
• the second light converted by the wavelength conversion element travels through the first light guide and is emitted from a region at the third surface side of the first light guide,
• the support member includes a first support portion configured to support the fourth surface of the wavelength conversion element and a second support portion configured to support the fifth surface of the wavelength conversion element, and
• the first optical member is in contact with the first support portion and the second support portion to cover an opposite side to the wavelength conversion member of the first light guide disposed between the first support portion and the second support portion.