PURPOSE: To provide a display device which does not lose the continuity of a screen and has excellent visibility by mounting a light transparent holding plate having the same coefft. of expansion as the coefft. of expansion of plural screen members at the front surface side of a casing and holding the plural screen members by this light transparent holding plate from its rear surface side.

CONSTITUTION: The light rays from projectors 22, 23 arrive at the rear surface of the light transparent holding plate 28 via mirrors 26, 27, further, pass the inside of the light transparent holding plate 28 and are projected on the screens 10, 12. At this time, silicone rubber 32 is packed and, therefore, the leakage of the light from gaps does not arise. When the temp. in the casing 9 rises, the thermal stresses tend to be generated by the tightening of screw members 31 but the generation such thermal stresses does not arise as the coeffts. of thermal expansion of the screens 10, 12 and the light transparent holding plates 28, 30 are the same. The expansion in a vertical direction can be dealt with that the through-holes for the mounting screws 29 which are disposed on the front surface side of the frame 1 are formed sufficiently large.