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1. (WO2017152408) LED LAMP TUBE

Pub. No.:    WO/2017/152408    International Application No.:    PCT/CN2016/076061
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Fri Mar 11 00:59:59 CET 2016
IPC: F21S 2/00
Applicants: SHENZHEN RUIZI LIGHT ELECTRICITY TECHNOLOGY CO., LTD
深圳市瑞梓光电科技有限公司
Inventors: HUANG, Xiaohua
黄晓华
Title: LED LAMP TUBE
Abstract:
Disclosed is an LED lamp tube with a tube diameter of 11 mm - 24 mm. The LED lamp tube comprises: an LED assembly (8), a heat dissipation tube (9), a lamp cover (7), and a drive power supply assembly (12). The LED assembly (8) comprises a first circuit board (81) and an LED (82) disposed on the first circuit board (81). The heat dissipation tube (9) is disposed below the first circuit board (81). The lamp cover (7) is sheathed on the LED assembly (8). The drive power supply assembly (12) is disposed in the heat dissipation tube (9). The drive power supply assembly (12) comprises: a second circuit board (121), a transformer (123) disposed on the second circuit board (121), and a plurality of elements. The transformer (123) comprises a main frame (1231) and a magnetic core assembly (1232). The main frame (1231) comprises a winding portion and lead portions arranged at two ends of the winding portion. The axial length of the winding portion is 16 mm - 24 mm. An avoidance structure (1233) is provided at the edge of the magnetic core assembly (1232) to reduce the width of an upper part of the magnetic core assembly (1232) so as to avoid the heat dissipation tube (9). The LED lamp tube with a tube diameter of 11 mm - 24 mm can still be applied to a lamp holder of G5 standard even when the drive power supply assembly is added.