Light source device and projector

A light source device comprising:

• a light emitting element which emits first light having a first wavelength band;
• a substrate having a first surface on which the light emitting element is arranged, and a second surface located at an opposite side to the first surface;
• a wavelength conversion member which includes a phosphor, and which is configured to convert the first light emitted from the light emitting element into second light having a second wavelength band different from the first wavelength band;
• a support member having a third surface having contact with the first surface of the substrate, and a fourth surface located at an opposite side to the third surface, and configured to support the wavelength conversion member;
• a fixation member configured to fix the support member to the substrate;
• and
• a spacer member having contact with each of the substrate and the wavelength conversion member to hold the light emitting element and the wavelength conversion member at positions separated from each other, wherein
• the fixation member is configured including an elastic member, and is configured to fix the support member to the substrate in a state of pressing the third surface toward the first surface;
• the first surface of the substrate is provided with a hole,
• a through hole penetrating the support member in a direction crossing the third surface is disposed at a position of the support member corresponding to the hole of the substrate,
• the fixation member includes a screw member to be inserted in the through hole and the hole, and an elastic member intervening between a head of the screw member and the support member, and
• the fixation member fixes the support member to the substrate in a state in which the elastic member is compressed.