Linear Solid-State Lighting With Ballast Free Of Electric Shock Hazard

摘要

A linear light-emitting diode (LED)-based solid-state lamp using an AC current control scheme and shock protection switches operates normally with an electronic ballast. Due to the use of shock protection switches in the two lamp bases at two opposite ends, the ballast-compatible LED lamp fully protects a person from possible electric shock during initial installation, maintenance, and re-lamping no matter what the rated power and the brand of the LLT lamp are and no matter whether the electronic ballast is existing used ones that may be incompatible with the lamp or faulty, leading to an unacceptable leakage current.

主权项

1. A linear light-emitting diode (LED) tube lamp, comprising:
a housing comprising two ends; a light-emitting diode printed circuit board (LED PCB), the LED PCB comprising LED arrays fixed thereon; two lamp bases respectively connected to the two ends of the housing, each lamp base comprising a shock protection switch and a bi-pin with the bi-pin comprising two pins protruding outwards; and an LED driver comprising interface ports receiving power from an electronic ballast through the bi-pins and the shock protection switches in the two lamp bases and powering the LED arrays, wherein, in each lamp base, when the shock protection switch is off, the bi-pin is not electrically connected to the LED driver, and wherein, in each lamp base, when the bi-pin is installed in a lamp socket, the shock protection switch is actuated to electrically connect the bi-pin to the LED driver.