Light source apparatus

A light source apparatus comprising:

• a housing;
• a coupling unit configured to fix the housing to a target structure;
• a light source module configured to emit light onto the target structure;
• and
• a power source module configured to supply electrical power to the light source module,
• wherein the light source module includes a first circuit board, a second circuit board disposed at one side of the first circuit board, a third circuit board disposed at the other side of the first circuit board,
• wherein at least one first ultraviolet light emitting element is disposed on one surface of the first circuit board, at least one second ultraviolet light emitting element is disposed on one surface of the second circuit board, and at least one third ultraviolet light emitting element is disposed on one surface of the third circuit board,
• wherein the housing includes an inlet and an outlet through which a rotating rail of the target structure passes, a first brush disposed at the inlet of the housing, and a second brush disposed at the outlet of the housing,
• wherein the first brush includes an elongated hole for adjustably coupling the first brush a predetermined distance from the rotating rail, and
• wherein the second brush includes an elongated hole for adjustably coupling the second brush a predetermined distance from the rotating rail.