PROBLEM TO BE SOLVED: To assure dustproof of an image projector even before it is assembled in an instrument panel.SOLUTION: An image projector 10 projects an image to a front glass F through an opening 20a which is provided at a bezel member 20 inserted in a wall A facing the front glass F of an instrument panel I of a vehicle V, being closed with a transparent cover 60. It includes a housing 13 (case) where a projection opening 13d, arranged to be overlapped with the opening 20a, is formed, and a pre-assembling protection sheet 17 which is arranged in the housing 13 (case) so as to close the projection opening 13d from inside, before the projection opening 13d is disposed to be overlapped with the opening 20a. At the housing 13 (case), a pull-out opening 13e is formed which is a part of the pre-assembling protection sheet 17, to be extended. The pre-assembling protection sheet 17 is provided in such a manner as being possible to be pulled out of the pull-out opening 13e by pulling an extension portion being
