the anti-dazzling unit is configured to adjust a reflectivity of incident ambient light and a transmittance of image light exited from the display unit in response to a light intensity of ambient light sensed by the sensor unit;

wherein the anti-dazzling unit comprises an anti-dazzling liquid crystal screen and a semi-reflection semi-transmission film, wherein the semi-reflection semi-transmission film is between the anti-dazzling liquid crystal screen and the display unit;

wherein the anti-dazzling liquid crystal screen is configured to adjust a polarization state of incident light in response to a loaded voltage; the display unit comprises a display panel, a first polarizer on a side of the display panel away from the semi-reflection semi-transmission film, and a second polarizer on a side of the display panel close to the semi-reflection semi-transmission film, and the anti-dazzling liquid crystal screen comprises a third polarizer on a side of liquid crystal molecules in the anti-dazzling liquid crystal screen away from the semi-reflection semi-transmission film, wherein an absorption axis of the first polarizer is orthogonal to an absorption axis of the second polarizer, the absorption axis of the second polarizer is orthogonal to an absorption axis of the third polarizer, and a transmission axis of the half reflection half reflection film is orthogonal to the absorption axis of the second polarizer; or, the display unit consists of a display panel and a first polarizer on a side of the display panel away from the semi-reflection semi-transmission film, and the anti-dazzling liquid crystal screen further comprises a third polarizer on a side of liquid crystal molecules of the anti-dazzling liquid crystal screen away from the semi-reflection semi-transmission film, wherein an absorption axis of the first polarizer is the same as an absorption axis of the third polarizer, and a transmission axis of the semi-reflection semi-transmission film is the same as the absorption axis of the first polarizer; or,

wherein the anti-dazzling liquid crystal screen is a twisted nematic liquid crystal display screen, and is configured to adjust a polarization state of incident light in response to a loaded voltage; the display unit comprises a display panel, a fourth polarizer on a side of the display panel away from the semi-reflection semi-transmission film, and a fifth polarizer on a side of the display panel close to the semi-reflection semi-transmission film, and the anti-dazzling liquid crystal screen further comprises a sixth polarizer on a side of liquid crystal molecules in the anti-dazzling liquid crystal screen away from the semi-reflection semi-transmission film, wherein an absorption axis of the fourth polarizer is orthogonal to an absorption axis of the fifth polarizer, the absorption axis of the fifth polarizer is parallel to an absorption axis of the sixth polarizer, and a transmission axis of the half reflection half reflection film is orthogonal to the absorption axis of the sixth polarizer; or, the display unit consists of a display panel and a fourth polarizer on a side of the display panel away from the semi-reflection semi-transmission film, and the anti-dazzling liquid crystal screen further comprises a sixth polarizer on a side of liquid crystal molecules in the anti-dazzling liquid crystal screen away from the semi-reflection semi-transmission film, wherein an absorption axis of the fourth polarizer is orthogonal to an absorption axis of the sixth polarizer, and a transmission axis of the semi-reflection semi-transmission film is orthogonal to the absorption axis of the sixth polarizer;

wherein in an anti-dazzling state, the reflectivity of the incident ambient light is controlled to reduce a light intensity of the incident ambient light, thereby realizing an anti-dazzling function; and in a display state, the transmittance of the image light exited from the display unit is controlled to implement a transmission of the image light, thereby realizing a display function.