HUD device, illumination monitoring method and device thereof, and readable storage medium

The invention discloses an HUD device, an illumination monitoring method and device of the HUD device and a readable storage medium, and relates to the technical field of head-up display, and the illumination monitoring method is applied to a control unit in the HUD device. The HUD equipment comprises an image generation unit connected with the control unit, an optical display unit arranged on a projection light path of the image generation unit and an illumination sensor arranged on a light path of the optical display unit; the illumination monitoring method comprises the following steps: acquiring an instant environment temperature of the HUD equipment; according to the instant environment temperature, determining a target environment temperature level of the instant environment temperature from a plurality of preset environment temperature levels; acquiring a preset screen temperature corresponding to the target environment temperature level and a preset temperature threshold value of an image generation u