Abstract: The disclosure provides a dust removal device for a solar panel. The dust removal device includes a first track and a second track, arranged on two sides of the solar panel; worms, connected with the first track and the second track; an ultrasonic vibration device, fixed to a stepper motor on a framework which can move along the worms to enable the ultrasonic vibration device to swing left and right; a hair brush, fixed on the framework and configured to move in the direction of the worms; a fan, fixed to the framework which can move along the worms, blowing away dust brushed by the hair brush; and an ultrasonic sensor, configured to detect a distance between the framework and the first track or the second track, and enabling the framework to return to the first track or the second track when the distance is smaller than a preset threshold.

Abstract: An LCD apparatus comprising an LCD screen, backlight arrangements for providing back illumination to the LCD screen, video processing circuitry and air moving devices, characterized in that the air moving devices are arranged to move air to condition the image displaying surface of the LCD screen. An LCD image displaying apparatus according to the present invention could operate at a brightness level of above 1000 nits, and even 3000 nits, which provides an astounding visual effect in the outdoor environment.

Abstract: An LCD apparatus comprising an LCD screen, backlight arrangements for providing back illumination to the LCD screen, video processing circuitry and air moving devices, characterized in that the air moving devices are arranged to move air to condition the image displaying surface of the LCD screen. An LCD image displaying apparatus according to the present invention could operate at a brightness level of above 1000 nits, and even 3000 nits, which provides an astounding visual effect in the outdoor environment.