PURPOSE: To make possible continuous projection of slide films with ease of construction and handling by spreading and guiding a film length connected to endless strip form with a guide mechanism and intermittently feeding the same, frame by frame, with a driving mechanism.

CONSTITUTION: A light source part 10 built in with a light source lamp 11 and condensing lens 12 is provided in the upper part of a main unit 9. A guide mechanism 14 which spreads and guides a film length 13 connecting a multiplicity of slide films to endless form is provided to one side face of this main unit. This guide mechanism 14 is constituted by the pulleys 15, 16 guide member 17 and drive pulley 18 respectively provided to the four corners of the main unit. The film length 13 is so constituted as to be intermittently fed, frame by frame, by a driving mechanism 21. Thereby, a series of slide films may be continuously projected by the simple constitution and with ease of handling.