Direct type panel lamp

The utility model discloses a direct type panel lamp which comprises a frame formed by splicing a plurality of frame strips, and each frame strip is of a hollow structure and provided with a cavity which extends in the length direction of the frame strip and is closed in the circumferential direction. The edge of the light-transmitting diffusion plate is lapped on the frame; the back plate is of a housing-shaped structure, the edge of the back plate is connected with the frame through a fastener, the back plate elastically abuts against the diffusion plate so that the edge of the diffusion plate can be attached to the frame, and one end of the fastener penetrates through the back plate from the outside and is hidden in the cavity. The cavities of the frame strips not only improve the overall structural strength of the frame, but also face the punching positions of the fasteners, the fasteners are hidden in the cavities, so that the surfaces of the frame strips are smooth, actually, the matching depth of the f