LED tube lamp and power supply module applicable thereto
First Claim
1. A light-emitting diode (LED) tube lamp adapted to install on a lamp socket and having electric shock protection function protecting a user from electric shock when installing the LED tube lamp into the lamp socket, the LED tube lamp comprising:
- a lamp tube;
two end caps, each having a first external connection terminal, and each coupled to a respective end of the lamp tube, the first external connection terminals of the two end caps for receiving an external signal;
a rectifying circuit, coupled to the first external connection terminals of the end caps, for rectifying a received signal to produce a rectified signal;
a filtering circuit, coupled to the rectifying circuit, for filtering the rectified signal to produce a filtered signal;
an LED module coupled to the rectifying circuit and the filtering circuit and configured for emitting light;
an electric shock protection controller, configured to determine whether to limit a current on a power loop formed between the first external connection terminals to less than a predefined value according to a detection result;
a transistor, coupled to the power loop and configured to be switched according to a detection control signal; and
one or more impedance devices, coupled to the transistor, which impedance devices and the transistor form a detection path coupled between the power loop and a ground terminal,wherein the electric shock protection controller is configured to cause a current to be conducted in the detection path for detecting an installation state between the LED tube lamp and the lamp socket and generating the detection result.
1 Assignment
0 Petitions
Accused Products
Abstract
A power supply module is applicable to an LED tube lamp adapted to install on a lamp socket, and having an electric shock protection function, the LED tube lamp including a lamp tube, two end caps, each having a first external connection terminal, and each coupled to a respective end of the lamp tube, the first connection terminals of the two end caps for receiving an external signal, and an LED module configured for emitting light. The power supply module includes: a rectifying circuit, coupled to the first external connection terminals of the end caps and the LED module, for rectifying a received signal to produce a rectified signal; a filtering circuit, coupled to the rectifying circuit and the LED module, for filtering the rectified signal to produce a filtered signal; a transistor configured to be switched according to a control signal; an electric shock protection controller for detecting whether an electric shock risk has occurred, and configured to cause a current to be conducted in the detection path for generating the detection result.
31 Citations
35 Claims
-
1. A light-emitting diode (LED) tube lamp adapted to install on a lamp socket and having electric shock protection function protecting a user from electric shock when installing the LED tube lamp into the lamp socket, the LED tube lamp comprising:
-
a lamp tube; two end caps, each having a first external connection terminal, and each coupled to a respective end of the lamp tube, the first external connection terminals of the two end caps for receiving an external signal; a rectifying circuit, coupled to the first external connection terminals of the end caps, for rectifying a received signal to produce a rectified signal; a filtering circuit, coupled to the rectifying circuit, for filtering the rectified signal to produce a filtered signal; an LED module coupled to the rectifying circuit and the filtering circuit and configured for emitting light; an electric shock protection controller, configured to determine whether to limit a current on a power loop formed between the first external connection terminals to less than a predefined value according to a detection result; a transistor, coupled to the power loop and configured to be switched according to a detection control signal; and one or more impedance devices, coupled to the transistor, which impedance devices and the transistor form a detection path coupled between the power loop and a ground terminal, wherein the electric shock protection controller is configured to cause a current to be conducted in the detection path for detecting an installation state between the LED tube lamp and the lamp socket and generating the detection result. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A power supply module applicable to an LED tube lamp adapted to install on a lamp socket, and having electric shock protection function, the LED tube lamp including a lamp tube;
- two end caps, each having a first external connection terminal, and each coupled to a respective end of the lamp tube, the first external connection terminals of the two end caps for receiving an external signal; and
an LED module configured for emitting light, the power supply module comprising;a rectifying circuit, coupled to the first external connection terminals of the end caps and the LED module, for rectifying a received signal to produce a rectified signal; a filtering circuit, coupled to the rectifying circuit and the LED module, for filtering the rectified signal to produce a filtered signal; a switch circuit configured to be switched according to a control signal; an electric shock protection controller coupled to the switch circuit, for detecting whether an electric shock risk has occurred, and configured to turn the switch circuit on or off according to the detection result; and one or more impedance devices, which impedance devices and at least one electric component of the electric shock protection controller form a detection path, wherein the electric shock protection controller is configured to cause a current to be conducted in the detection path for generating the detection result. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
- two end caps, each having a first external connection terminal, and each coupled to a respective end of the lamp tube, the first external connection terminals of the two end caps for receiving an external signal; and
-
31. A power supply method for a ballast-bypass type LED tube lamp, comprising:
-
receiving an AC signal, without the AC signal passing through a ballast, from respective ends of the LED tube lamp; rectifying and filtering the AC signal to produce a filtered signal; converting the filtered signal into a driving signal by a power conversion means; providing the driving signal to an LED module of the LED tube lamp for emitting light; detecting a signal feature on a detection path on the LED tube lamp and generating an installation detection result; and limiting a current on a current path of the LED tube lamp when the installation detection result indicates a risk of electric shock exists. - View Dependent Claims (32, 33, 34, 35)
-
Specification