LED tube lamp
First Claim
1. A light emitting diode (LED) tube lamp, comprising:
- a lamp tube;
a first pin and a second pin coupled to the lamp tube, for receiving an external driving signal;
a first rectifying circuit coupled to the first pin and the second pin and configured to rectify the external driving signal to produce a rectified signal;
a filtering circuit coupled to the first rectifying circuit and configured to filter the rectified signal to produce a filtered signal;
an LED lighting module coupled to the filtering circuit and configured to receive the filtered signal for emitting light; and
a ballast-compatible circuit coupled to the first rectifying circuit and containing a metallic electrode, a bimetallic strip, and a heating filament in an inert gas,wherein the bimetallic strip is connected to the heating filament, and a spacing is configured between the bimetallic strip and the metallic electrode,wherein the bimetallic strip includes two metallic strips, and a first metallic strip of the two metallic strips that is closer to the metallic electrode has a smaller temperature coefficient than that of a second metallic strip of the two metallic strips that is further away from the metallic electrode, andwherein when the external driving signal is initially input at the first pin and second pin, the ballast-compatible circuit will be in an open-circuit state and does not allow the LED tube lamp to emit light, and when the ballast-compatible circuit is in a conduction state, which allows a current input at the first pin and second pin to flow through the LED lighting module, the LED tube lamp emits light.
1 Assignment
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Accused Products
Abstract
An LED tube lamp includes a lamp tube, having a first pin and a second pin for receiving an external driving signal; a first rectifying circuit for rectifying the external driving signal; a filtering circuit for producing a filtered signal; an LED lighting module configured for emitting light; and a ballast-compatible circuit, coupled to the first rectifying circuit, and containing a metallic electrode, a bimetallic strip, and a heating filament in an inert gas. A spacing is configured between the bimetallic strip and the metallic electrode, and the bimetallic strip includes two metallic strips with different temperature coefficients. When the external driving signal is initially input at the first pin and second pin, the ballast-compatible circuit will be in an open-circuit state, until entering a conduction state, which allows a current to flow through the LED lighting module thus allowing the LED tube lamp to emit light.
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Citations
16 Claims
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1. A light emitting diode (LED) tube lamp, comprising:
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a lamp tube; a first pin and a second pin coupled to the lamp tube, for receiving an external driving signal; a first rectifying circuit coupled to the first pin and the second pin and configured to rectify the external driving signal to produce a rectified signal; a filtering circuit coupled to the first rectifying circuit and configured to filter the rectified signal to produce a filtered signal; an LED lighting module coupled to the filtering circuit and configured to receive the filtered signal for emitting light; and a ballast-compatible circuit coupled to the first rectifying circuit and containing a metallic electrode, a bimetallic strip, and a heating filament in an inert gas, wherein the bimetallic strip is connected to the heating filament, and a spacing is configured between the bimetallic strip and the metallic electrode, wherein the bimetallic strip includes two metallic strips, and a first metallic strip of the two metallic strips that is closer to the metallic electrode has a smaller temperature coefficient than that of a second metallic strip of the two metallic strips that is further away from the metallic electrode, and wherein when the external driving signal is initially input at the first pin and second pin, the ballast-compatible circuit will be in an open-circuit state and does not allow the LED tube lamp to emit light, and when the ballast-compatible circuit is in a conduction state, which allows a current input at the first pin and second pin to flow through the LED lighting module, the LED tube lamp emits light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A light emitting diode (LED) tube lamp, comprising:
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a lamp tube; a first pin and a second pin coupled to the lamp tube and configured to receive an external driving signal; a first rectifying circuit coupled to the first pin and the second pins and configured to rectify the external driving signal to produce a rectified signal, wherein the first rectifying circuit comprises a rectifying unit and a terminal adapter circuit, and the rectifying unit is coupled to the terminal adapter circuit and is capable of performing half-wave rectification, and the terminal adapter circuit is configured to transmit the external driving signal received via at least one of the first pin and the second pin; a filtering circuit coupled to the first rectifying circuit and configured to filter the rectified signal to produce a filtered signal; an LED lighting module coupled to the filtering circuit and configured to receive the filtered signal for emitting light; and a ballast-compatible circuit coupled between the rectifying unit and the terminal adapter circuit, and containing a metallic electrode, a bimetallic strip, and a heating filament in an inert gas, wherein the bimetallic strip is connected to the heating filament, and a spacing is configured between the bimetallic strip and the metallic electrode, wherein the bimetallic strip includes two metallic strips, and one of the two metallic strips that is closer to the metallic electrode has a smaller temperature coefficient than that of the other of the two metallic strips that is further away from the metallic electrode, and wherein when the external driving signal is initially input at the first pin and second pin, the ballast-compatible circuit is in an open-circuit state and does not allow the LED tube lamp to emit light, and when the ballast-compatible circuit enters a conduction state, which allows a current input at the first pin and the second pin to flow through the LED lighting module, the LED tube lamp emits light. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification