LED TUBE LAMP

摘要

An LED tube lamp is provided herein, which implements the safety function for protecting the user from electric shock since it conducts only when both ends thereof have been correctly installed into a lamp socket. The LED tube lamp includes a lamp tube; two end caps having pin(s) respectively and coupled to both ends of the lamp tube correspondingly for receiving an external driving signal; two rectifying circuits rectifying the external driving signal to produce a rectified signal; a filtering circuit filtering the rectified signal to produce a filtered signal; an LED lighting module receiving the filtered signal to produce a driving signal for the LED tube lamp to emit light; and an installation detection module determining whether cutting off the external driving signal passing through the LED tube lamp, wherein the installation detection module includes a first installation detection terminal and a second installation detection terminal, further, when a current passing through the first and the second installation detection terminals is bigger than or equal to a set current value, the installation detection module conducts; when the current passing through the first and the second installation detection terminals is smaller than the set current value, the installation detection module cuts off.

主权项

1. A light-emitting diode (LED) tube lamp, comprising:
a lamp tube; two end caps, each having at least one pin, and each coupled to a respective end of the lamp tube, the pins of the two end caps for receiving an external driving signal; a first rectifying circuit, coupled to a pin of one of the two end caps, for rectifying the external driving signal to produce a rectified signal; a second rectifying circuit, coupled to a pin of the other of the two end caps, for simultaneously rectifying the external driving signal with the first rectifying circuit; a filtering circuit, coupled to the first and the second rectifying circuits, for filtering the rectified signal to produce a filtered signal; an LED lighting module, coupled to the filtering circuit, and configured to receive the filtered signal to produce a driving signal, wherein the LED lighting module includes an LED module configured to receive the driving signal and emit light; and an installation detection module, configured to determine whether to cut off the external driving signal passing through the LED tube lamp, wherein the installation detection module includes a first installation detection terminal and a second installation detection terminal, the first installation detection terminal is coupled to the first and/or the second rectifying circuits, the second installation detection terminal is coupled to the filtering circuit, wherein, the installation detection module is configured such that when a current passing through the first and the second installation detection terminals is bigger than or equal to a specific current value, the installation detection module conducts to make the LED tube lamp operate in a conductive state; and when the current passing through the first and the second installation detection terminals is smaller than the specific current value, the installation detection module cuts off to make the LED tube lamp enter in a non-conducting state.