Patent ID: 11965639
Assignee: HUIZHOU HANXING OPTOELECTRONIC CO., LTD
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC F | IPC F

Claim 10:
11. The lighting apparatus of claim 8, wherein the lamp shade comprises:
a base plates in a quare frame shape, having concave grooves or steps formed on a long edge of a front side of the base plate from top to bottom, and an annular groove defining on a back side of the base plate to fix a sealing ring;
a guard wall, extending upward from an inner circumferential side of the base plate; and
a top plate, covered on an end of the guard wall away from the base plate, the plurality of recesses are formed on the front face of the top plate, a bottom of each recess being smooth and circular, a depth of each recess is range from 0.1 mm to 3 mm; the plurality of the arc protrusions protruding from a back of the top plate and being in a truncated cone shape; and
a height of the arc protrusions from the back of the top plate is smaller than that of the guard wall protruding from the back of the top plate.