Patent ID: 8174629

Claim:
A vehicle display system having both an untwisting function and a position restoring function, comprising: a main body mounted on a ceiling of a vehicle; a display panel coupled to the main body so as to be rotated; one or more drive means for rotating two connection members connected to respective ends of the display panel; a microcontroller for controlling the drive means, and operating the drive means so that the display panel is unfolded when receiving basic signals, which are generated by supply of power, a playback operation, and insertion of a recording medium; one or more clutch means, each comprising: spring washers, each of which is configured to press a corresponding connection member in one direction so as to prevent the corresponding connection member from running idle due to a diameter of a coupling hole of the corresponding connection member, which is greater than an external diameter of a corresponding rotational shaft provided in a corresponding drive means; and a lubrication washer, which is configured to have high-viscosity lubricant holding grooves to adjust frictional resistance of the corresponding connection member and which is fastened to the corresponding rotational shaft so as not to be rotated; wherein each of the clutch means is interposed between the corresponding connection member and the rotational shaft of the corresponding drive means, and causes the corresponding connection member to run idle over the corresponding rotational shaft when a force that is greater than that necessary for unfolding or folding the display panel is applied; and windup springs, each of which is mounted to the corresponding rotational shaft that connects the main body with the display panel and is wound when the display panel is unfolded.