Cooling structure for light source device and projector

A projector comprising:

• a case;
• a light source;
• a light source;
• a heat dissipation plate formed in a plate shape and having a mounting surface on which the light source is mounted;
• a plurality of heat dissipation fins formed in a plate shape in which a first direction along a back surface of the heat dissipation plate opposite to the mounting surface is a thickness direction and arranged at intervals in the first direction;
• and
• a blower fan disposed to face the back surface via the plurality of heat dissipation fins and blowing air toward the back surface, wherein
• each of first ends of the plurality of heat dissipation fins in a second direction orthogonal to the first direction along the back surface does not protrude outside of a first edge of the heat dissipation plate in the second direction,
• the plurality of heat dissipation fins are provided with a cover that is provided at the plurality of first ends and covers a region corresponding to each distal end in an extension direction of the plurality of heat dissipation fins extending from the back surface toward the blower fan in a gap between the heat dissipation fins adjacent in the first direction, and
• a region corresponding to each basal end in the extension direction of the plurality of heat dissipation fins in the gap between the adjacent heat dissipation fins is covered with the cover, and thus an opening is formed at a position corresponding to each of the plurality of basal ends of the plurality of first ends such that the gap between adjacent heat dissipation fins faces the outside of the plurality of heat dissipation fins.