The invention discloses a direct type liquid-crystal display device and relates to the technical field of electronic and electrical products. The direct type liquid-crystal display device comprises a back plate, a middle frame, a front frame, a backlight module and a display screen, wherein the back plate comprises a base plate and side plates, the middle frame is installed on the side plates through fasteners and clamping tables, a supporting plate is further arranged on the middle frame, the backlight module is embedded between the supporting plate and the back plate, the front frame covers the outer side of the back plate and the outer side of the middle frame, and the display screen is embedded between the front frame and the supporting plate. A reinforcing plate is further fixed to the back plate, clamping hooks are arranged on the reinforcing plate, the backlight module comprises lamp strips, the lamp strips are provided with clamping holes, and the clamping hooks are matched with the clamping holes to fix the lamp strips on the reinforcing plate. The strength of the back plate is improved by arranging the reinforcing plate on the back plate, back plate damage during lamp strip installation is avoided, the size of the back plate is decreased, and the production cost is saved. In addition, the lamp strips and the reinforcing plate are connected through the clamping hooks and the clamping holes, mounting and dismounting are convenient, the assembly time is saved, and the lamp strip mounting and changing efficiency is improved.