Patent ID: 7388755

Claim:
A mechanical liquid crystal display device comprising: a case, an extendable deck, a coupling mechanism, a display panel holding mechanism and a downward folding adjustment device, wherein: the case is hollow and has a window and a first channeling mechanism and a second channeling mechanism located respectively on two sides corresponding to each other to guide the extendable deck to retract inwards or extend outwards at desired locations; the extendable deck has a front side pivotally engaged with the display panel holding mechanism and is coupled with the first channeling mechanism and the second channeling mechanism for positioning; the coupling mechanism is located on one side of the extendable deck to control folding, latching and releasing of the display panel holding mechanism; the display panel holding mechanism has a panel to hold a LCD panel; and the downward folding adjustment device is located in the display panel holding mechanism and connected to the extendable deck and has a downward folding actuation assembly to guide the display panel holding mechanism for folding downwards and storing; wherein the LCD panel is foldable downwards and storable in the case, wherein the downward folding actuation assembly includes two dampers, a sliding board, and an elevation angle push plate, wherein the sliding board has two sides each having a gear rack corresponding to the damper, a bottom edge forming respectively a latch trough on two sides, a longitudinal trough in the center, and a latch strut on each of two sides to anchor a first end of a sliding board spring, the sliding board spring having a second end fastened to a strut on a back side of the display panel holding mechanism.