Household projector with heat dissipation and dust prevention functions

The present invention discloses a household projector with heat dissipation and dust prevention functions. The household projector comprises a shell, a mounting cavity and a functional cavity are formed in the shell, a heat conduction plate is fixedly connected between the mounting cavity and the functional cavity, and an isolation block is glued to the inner top wall of the functional cavity; a first sliding plate and a second sliding plate are slidably connected between the isolation block and the inner side wall of the functional cavity in a sealed mode, springs are fixedly connected between the first sliding plate and the inner top wall of the functional cavity and between the second sliding plate and the inner top wall of the functional cavity, and the space between the first sliding plate and the inner bottom wall of the functional cavity and the space between the second sliding plate and the inner bottom wall of the functional cavity are filled with cooling liquid; and a plurality of condensation pipes