LED TUBE LAMP STRUCTURE

• US 20140009923A1
• Filed: 07/06/2012
• Published: 01/09/2014
• Est. Priority Date: 07/06/2012
• Status: Abandoned Application

• Current Assignee: Fin-Core Corporation, Tong Hong Investment Co., Ltd.
• Original Assignee: Fin-Core Corporation, Tong Hong Investment Co., Ltd.
• Inventors: Wu, Tan Chih, Yang, Fu Pao
• Application Number:
  US13/542,744
• Publication Number:
  US 20140009923A1
• Time in Patent Office: Days
• US Class Current: 362/218
• CPC Class Codes: F21K 9/27 Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
• CPC Class Codes: F21V 29/506 of globes, bowls or cover glasses
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

An LED tube lamp structure includes a heat-transferring and light-pervious glass tube; a heat-dissipation metal base in the form of an elongated strip with a predetermined curve and bonded to an inner surface of the glass tube via a thermal adhesive; an LED chip circuit board fitted in a receiving seat on a front side of the heat-dissipation metal base and connected to an LED driving circuit; and two electrode covers fitted on two open ends of the glass tube and internally provided with an insertion section each. The heat-dissipation metal base has two ends inserted into the two insertion sections to have an upward tension for tightly contacting with the glass tube. Therefore, heat produced by the LED tube lamp is effectively transferred to the glass tube and dissipated into ambient air to extend the service life of the LED tube lamp.

Claims

1. An LED tube lamp structure, comprising:

a glass tube being a heat-transferring and light-pervious hollow cylindrical member having two open ends;

a heat-dissipation metal base being a long strip with a predetermined curve, and having a front side formed into a receiving seat and a rear side attached to an inner surface of the glass tube via a thermal adhesive;

an LED chip circuit board being fitted in the receiving seat on the front side of the heat-dissipation metal base and connected to an LED driving circuit; and

two electrode covers being separately fitted on two open ends of the glass tube to electrically connect to the LED driving circuit;

the two electrode covers being respectively internally provided with an insertion section, and the heat-dissipation metal base having two ends inserted into the two insertion sections to thereby be fixedly held in place and provided with an upward tension;

wherein, since the heat-dissipation metal base is tightly attached to the inner surface of the glass tube via the thermal adhesive and under the upward tension without the risk of becoming dropped, deformed or separated from the glass tube, heat produced by the lightened LED tube lamp can be effectively transferred from the heat-dissipation metal base to the whole glass tube and uniformly dissipated into ambient air from the glass tube to ensure extended service life of the LED tube lamp structure.

2. The LED tube lamp structure as claimed in claim 1, wherein the heat-dissipation metal base has a substantially arcuate cross section, giving the rear side of the heat-dissipation metal base a slightly tensioned arched back with two longitudinal edges formed into two guide rails;

and wherein the receiving seat on the front side of the heat-dissipation metal base is in the form of an inward recessed channel.

3. The LED tube lamp structure as claimed in claim 2, wherein the electrode covers are respectively include an end cap provided with pins and a short cylindrical body;

the end cap being connected to and closing an outer open end of the short cylindrical body, and the insertion section being provided in an inner open end of the short cylindrical body and in the form of an L-shaped plate to protrude from an inner upper surface of the short cylindrical body.

4. The LED tube lamp structure as claimed in claim 3, wherein the heat-dissipation metal base is an elongated aluminum extrusion strip, and the LED driving circuit is received in one of the electrode covers.