Telescopic mechanism of display device and display device

The invention discloses a telescopic mechanism of a display device and the display device. The telescopic mechanism (20) comprises a first shell (30), a second shell (40) and a driving assembly (50), and the first shell (30) is movably connected with the second shell (40); the driving assembly (50) is located in the first shell (30) and connected with the first shell (30); in the connection state, the second shell (40) is connected with the driving assembly (50) and can be driven by the driving assembly (50) to stretch out and draw back relative to one side of the first shell (30); in the disengaged state, the second shell (40) is separated from the driving assembly (50); the telescopic mechanism (20) is configured to be switched from the connection state to the disconnection state when the acceleration of the second shell (40) moving relative to the first shell (30) is larger than a preset value.