A latch device includes a display apparatus having a display apparatus body installed in the ceiling portion or the like of a vehicle and a display section retracted so that it can be developed from the display apparatus body. A plunger section is fixed to the display apparatus body for driving an actuator section on the basis of input signals. A pressing structure is bent by the driving of the actuator section. Movement of a sliding structure is restricted by the bending of the pressing structure. A latch section projects toward the display section retracted in the display apparatus body in accordance with the movement of the sliding structure.