A projection-type display device comprises: a display body including an upper cabinet having a screen at a front portion thereof and a lower cabinet having a pair of side frames for supporting the upper cabinet; a projector unit including projectors and mounting device on which the projectors are mounted movable in the forward/backward directions with respect to the lower cabinet; guide device for guiding the projector unit to a predetermined position in the display body when the projector unit is separated from or received into the display body; locating device for locating the projector unit at a predetermined position and securing together the projector unit and the display body to separate one of them from the floor surface; and a device for supporting the other of the projector unit and the display body is grounded on the floor surface, at three positions.