Patent ID: 8057064

Claim:
A lighting fixture for a lamp tube, which is adapted for improving a light output efficiency of the lamp tube, comprising: a concave reflecting plate; and a lampshade disposed under the reflecting plate and comprising a first side plate, a second side plate, a first end plate, a second end plate and a plurality of partition plates; the first side plate, the second side plate, the first end plate, and the second end plate forming a rectangle, and the partition plates being disposed in the rectangle and above a light output opening which is located at a bottom of the lampshade; wherein each of the partition plates comprises a first surface and a second surface, each of the first surface and the second surface comprises an upper inclined plane and a lower curved surface, the upper inclined plane of the first surface and the upper inclined plane of the second surface are connected to form a curved top portion having an arc surface, the lower curved surface of the first surface and the lower curved surface of the second surface are connected to form a bottom portion having an arc line, a radius of the curved top portion is larger than that of the reflecting plate, both the first surface and the second surface have two concave joints, both the first side plate and the second side plate are inclined planes and are respectively located at both sides of the rectangle, each the first side plate and the second side plate has a plurality of side holes corresponding to the partition plates and two side hook holes corresponding to the side hooks, the concave joints of the partition plate are wedged into the side holes to connect the partition plate with the lampshade, and the side hooks of the reflecting plate are engaged with the side hook holes to connect the reflecting plate with the lampshade.