PROBLEM TO BE SOLVED: To provide an in-shoe cleaning system including a light source device with safety taken into consideration, for in-shoe cleaning.SOLUTION: An in-shoe cleaning system includes: a light source device 100 to be inserted into a shoe where a liquid containing photocatalyst particles obtaining a photocatalytic activity by a visible light is sprayed and a sprayer for spraying a photocatalytic solution obtaining the photocatalytic activity by a visible light to the inside of a shoe. The light source device 100 includes: a light emitting element storage part 10 stored with LEDs 20 and a battery storage part 30 for storing a battery for the LEDs 20. In the light emitting element storage part, a housing includes a base material with translucency, and a prescribed interval is arranged between the housing and the light emitting element.COPYRIGHT: (C)2014,JPO&INPIT【課題】安全性を考慮した靴内清浄用の光源装置を含む靴内清浄システムを提供する。【解決手段】可視光線によって光触媒活性が得られる光触媒粒子を含む液体が噴霧された靴内に挿入される光源装置100と、前記靴内に可視光線によって光触媒活性が得られる光触媒溶液を噴霧する噴霧器とを備える。光源装置100は、LED20が収容されている発光素子収容部10と、LED20用の電池が収容される電池収容部30とを備え、前記発光素子収容部は、筐体が透光性を有する素材を含み、当該筐体と前記発光素子との間に所要の間隔を設けている。【選択図】 図7