Bidirectional digital set top box with automatic periodic dust removal structure

The invention discloses a bidirectional digital set top box with an automatic periodic dust removal structure. The set top box comprises a DEH instruction module, one side of the DEH instruction module is unidirectionally and electrically connected with a servo plate; one side of the servo board is connected with a power amplifier board; one side of the power amplifier board is unidirectionally and electrically connected with a servo valve, one side of the servo valve is connected with a hydraulic servo-motor, the other side of the hydraulic servo-motor is connected with a feedback board, thefeedback board is unidirectionally and electrically connected with the power amplifier board, the feedback board is unidirectionally and electrically connected with the servo board, one side of the feedback board is provided with a wire pressing mechanism, and the top end of the hydraulic servo-motor is provided with a monitoring mechanism. In the set top box, under the action of the dust removalmechanism, the electric te