US 11,231,161 B1Granted

Direct-type panel lamp with uniform light

AssigneeCh Lighting Technology Co., Ltd.

InventorsJiangfeng Jiang, Jizhong Pu

Life of this patent

Estimating the term…

Loading patent…

Abstract

The present application discloses a direct-type panel lamp with uniform light, including a frame, a diffusion plate, a back plate, a reflective sheet and at least one lamp strip. A central region of the back plate bulges to form a chamber for accommodating the lamp strip. The chamber includes a flat bottom wall and inclined side walls. Each lamp strip is fixed on the bottom wall. The reflective sheet is located in the chamber and attached to the back plate. The reflective sheet is provided with cut-outs, and two side edges of each cut-out are attached to each other to adapt to a corner of the back plate. The cut-outs may prevent the folded edge from wrinkling or folding at the corners of the side walls, so that the reflective sheet is smoothly installed, avoiding causing light spots.

Claims20

Dependent claims

A direct-type panel lamp with uniform light, comprising:

at least one lamp strip, each lamp strip comprising a substrate and a plurality of LED beads fixed on the substrate;
a back plate, with a central region bulging to form a chamber for accommodating the lamp strip, the chamber comprising a flat bottom wall and a plurality of inclined side walls, wherein each of the at least one lamp strip is fixed on the bottom wall;
a diffusion plate, having a light transmitting function, and arranged opposite to the back plate to close the chamber;
a frame, formed by connecting a plurality of frame strips, and each frame strip is connected with a respective edge of the diffusion plate and a respective edge of the back plate;
and
a reflective sheet, located in the chamber and attached to the back plate, wherein the reflective sheet is provided with a plurality of cut-outs, and two side edges of each cut-out are attached to each other to adapt to a corner of the back plate.

3 more elements

Dependencies are inferred from the claim text.