LED (Light Emitting Diode) backlight source capable of directionally condensing light

The utility model discloses an LED (light-emitting diode) backlight source capable of directionally condensing, which belongs to the technical field of LED backlight sources and comprises a backlight source shell, a lap joint groove is arranged in the backlight source shell, a dimming structure is connected in the lap joint groove in a sliding manner, a second condensing lens is mounted in the dimming structure, and a diffusion plate is fixedly connected to the inner wall of the upper end of the backlight source shell. A dustproof lens is fixedly connected to the upper end of the backlight source shell and located at the upper end of the diffusion plate, a connecting plate is fixedly connected to the interior of the backlight source shell, a first collecting lens is fixedly connected to the upper end of the connecting plate, a filter lens and a heat conduction plate are fixedly connected to the middle of the inner end of the connecting plate, and the heat conduction plate is located below the filter lens. Acc