Provided is a tilt foot mechanism of a projection display device, in which the number of components is reduced to lower costs. The tilt foot mechanism includes foot (14) elevatable with respect to the case of the projection display device. Foot (14) includes rod (20) in which spiral groove (23) is formed. The tilt foot mechanism further includes base portion (11) integrally formed with the case, lever (12) rotatably attached to base portion (11) and having convex portion (42) formed to fit in groove (23) of rod (20), and spring (13) disposed between base portion (11) and lever (12). Lever (12) has projection (45) on which a part of foot (14) can abut. Lever (12) is rotated against the pressing of spring (13) along with the rising of foot (14) abutted on projection (45).