Disclosed herein is an oral illumination device. The oral illumination device includes a housing, a plurality of light-emitting diodes (LEDs) and a light-transmitting plate. The housing is made from a non-transparent material and has an opening disposed at one end. The LEDs are disposed in the housing and positioned opposite to the opening. The light-transmitting plate is disposed in the housing for conducting the light emitted from the LEDs to the opening.在此揭示一種口腔照明裝置,包括一板狀殼體、複數個發光二極體和一導光板。所述板狀殼體不可透光且一端具有一開口。所述複數個發光二極體,設於板狀殼體內部且位於所述開口之相對端。所述導光板設於板狀殼體內部,用以將發光二極體所發射出之光線傳導至板狀殼體的開口處。100‧‧‧口腔照明裝置110‧‧‧板狀殼體112‧‧‧開口120‧‧‧發光二極體124‧‧‧印刷電路板126‧‧‧發光二極體列130‧‧‧導光板
