US 11,719,417 B1
Lamp tube structure capable of preventing glue from overflowing
Fuxing Lu, Fujian (CN); Rongtu Liu, Fujian (CN); and Honggang Sun, Fujian (CN)
Assigned to Xiamen PVTECH Co., Ltd., Fujian (CN)
Filed by Xiamen PVTECH Co., Ltd., Fujian (CN)
Filed on Nov. 7, 2022, as Appl. No. 17/981,487.
Claims priority of application No. 202210834044.9 (CN), filed on Jul. 14, 2022.
Int. Cl. F21K 9/272 (2016.01); F21V 17/10 (2006.01); F21S 4/28 (2016.01)
CPC F21V 17/101 (2013.01) [F21K 9/272 (2016.08); F21S 4/28 (2016.01)] 9 Claims
OG exemplary drawing
 
1. A lamp tube structure capable of preventing glue from overflowing, comprising a hollow tube body and a cap body covering an opening of the hollow tube body, wherein an inner surface of the cap body is provided with a plurality of protrusion portions, and the protrusion portions are ring-shaped and arranged to be parallel with each other, wherein a glue is distributed over the inner surface of the cap body and the protrusion portions are configured to prevent the glue from overflowing, and an outer surface of the hollow tube body contacts the protrusion portions, wherein the protrusion portions include a first protrusion portion and a second protrusion portion, and the first protrusion portion and the second protrusion portion are circular and cross-sections of the first protrusion portion and the second protrusion portion are conical.