LED TUBE LAMP

摘要

An LED tube lamp including a glass lamp tube, an LED light strip disposed inside the glass lamp tube, and an end cap attached over an end of glass lamp tube is disclosed. The glass lamp tube includes a main body region, a rear end region, and a two-arc-shaped transition region connecting the main body region and the rear end region. The LED light strip includes a bendable circuit sheet being longer than the glass lamp tube to form a freely extending end portion. In addition, the end cap has at least one opening on surface to dissipating heat resulting from power supply and/or the process of heating of a hot melt adhesive.

主权项

1. An LED tube lamp, comprising:
a glass lamp tube extending in a first direction along a length of the glass lamp tube comprising a main body region, a rear end region, and a two-arc-shaped transition region connecting the main body region and the rear end region, the main body region and the rear end region are substantially parallel; an end cap disposed at one end of the glass lamp tube, wherein the end cap comprises an electrically insulating tubular part sleeved with the end of the glass lamp tube having an inner circumferential surface with a plurality of protruding portions formed thereon and extending inwardly in a radial direction of the electrically insulating tubular part, a socket for connection with a power supply, at least one opening on surface to dissipate heat, and a magnetic metal member fixedly disposed between the protruding portions of the inner circumferential surface of the electrically insulating tubular part of the end cap and the end of the glass lamp tube, wherein each of the protruding portions is disposed between an outer circumferential surface of the magnetic metal member and the inner circumferential surface of the electrically insulating tubular part thereby forming a space therebetween with a hot melt adhesive contained in the space, and the glass lamp tube and the end cap are secured by the hot melt adhesive; a power supply provided inside the end cap having a metal pin at one end, while the end cap having a hollow conductive pin to accommodate the metal pin of the power supply; and an LED light strip disposed inside the glass lamp tube with a plurality of LED light sources mounted on the LED light strip; wherein the LED light strip has a bendable circuit sheet electrically connect the LED light sources and the power supply, and the length of the bendable circuit sheet is larger than the length of the glass lamp tube and the bendable circuit sheet has a first end and a second end opposite to each other along the first direction, and at least the first end of the bendable circuit sheet is bent away from the glass lamp tube to form a freely extending end portion along a longitudinal direction of the glass lamp tube, and the freely extending end portion is electrically connected to the power supply.