Patent ID: 9414516
Filing Date: 2016-08-09
CPC Classification: G02F,G09F,H05K

Claim Text:
1. A digital sign, comprising: a case having an inner space, the inner space including a first space in communication with a second space at respective first ends thereof; a display panel provided in the case; a circuit device to drive the display panel; a suction port formed in the case to guide external air into the inner space; a discharge port formed in the case to allow discharge air from the case; a circulation fan provided in the inner space to induce air flow in the inner space; a circulation damper provided between respective second ends of the first space and the second space to selectively open and close the respective second ends of the first and second spaces, and at least one temperature sensor to measure at least one of a temperature of the inner space of the case or a temperature of an exterior of the case, wherein the air introduced into the inner space of the case through the suction port passes through the inner space of the case and is discharged through the discharge port when the circulation damper is in a closed position, and the air circulates in the first space and the second space when the circulation damper is in an open position, and wherein the circulation damper is in the closed position when the temperature measured by the temperature sensor is greater than or equal to a first reference temperature; and is in the open position when the temperature measured by the temperature sensor is less than the first reference temperature.