| 摘要 |
PROBLEM TO BE SOLVED: To provide a structure capable of effectively cooling, in particular, a region where a light-emitting element substrate is attached in a heat sink, with a cooling air evenly applied to a cooling fin, in a light source device incorporating a light source unit composed of the heat sink to which the light-emitting element substrate including a light-emitting element is attached, and a cooling fan disposed opposite to the cooling fin of the heat sink, within a casing.SOLUTION: An air intake guide for guiding a cooling air to one end part of the cooling fin in an extension direction is disposed between the cooling fin of the heat sink and the cooling fan, and an exhaust port is formed in the casing to face the other end part of the cooling fin in the extension direction. |
