Abstract: A light-emitting diode (LED) tube lamp comprising a tube, end caps with contact pins and located on both ends of the tube, a first rectifying circuit and a second rectifying circuit and a filtering circuit that are coupled with the contact pins on the two end caps respectively, and a switch circuitry that is located between the rectifying circuits and the filtering circuit characterized in that the switch circuitry is capable of detecting whether the LED tube lamp is correctly installed on a lamp socket so as to reduce the risk of electric shock.

Abstract: A light-emitting diode (LED) tube lamp comprising a tube, end caps with contact pins and located on both ends of the tube, a first rectifying circuit and a second rectifying circuit and a filtering circuit that are coupled with the contact pins on the two end caps respectively, and a switch circuitry that is located between the rectifying circuits and the filtering circuit characterized in that the switch circuitry is capable of detecting whether the LED tube lamp is correctly installed on a lamp socket so as to reduce the risk of electric shock.

Abstract: An LED tube lamp includes a lamp tube; an LED light strip disposed inside the lamp tube and comprising a mounting region and a connecting region, a plurality of LED light sources mounted on the mounting region and at least two first connecting pads arranged on the connecting region; a fixing structure disposed inside the lamp tube and extending along the longitudinal direction of the lamp tube, the fixing structure comprising a first end fixedly connected to an inner circumferential surface of the lamp tube and second end fixedly connected to the LED light strip; a power supply module disposed on the fixing structure and electrically connecting to the LED light strip via the two first connecting pads, the power supply module comprising a circuit board separate from the light strip and a plurality of electronic components mounted on the circuit board; and two end caps attached to two ends of the lamp tube respectively.

Abstract: An LED lamp includes: a lamp shell including a lamp head, a lamp neck and a sleeve; a passive heat dissipating element having a heat sink connected to the lamp shell; a power source having a first portion and a second portion; a light emitting surface connected to the heat sink of the passive heat dissipating element and comprising LED chips electrically connected to the power source; a first heat dissipating channel formed in a first chamber of the lamp shell for dissipating heat generated from the power source while the LED lamp is working, and the first chamber is located between bottom of the LED lamp and an upper portion of the lamp neck; and a second heat dissipating channel formed in the heat sink and between the fins and the base of the heat sink for dissipating the heat generated from the LED chips and transferred to the heat sink; wherein a lateral outline of the LED lamp detours around the axis of the LED lamp 360 degrees to turn around to form a contour of the LED lamp, the outline includes an out

Abstract: An LED light bulb, comprising of: a lamp housing; a bulb base connected to the lamp housing; a stem connected to the bulb base and located in the lamp housing; a single flexible LED filament, disposed in the lamp housing, the flexible LED filament comprising: a plurality of LED sections; a plurality of conductive sections, located between the adjacent two LED sections, where each of the conductive sections includes a conductor, the conductor is copper foil; at least two conductive electrodes; and a light conversion layer comprising a phosphor layer and a silicon layer superposed on the phosphor layer, disposed on the LED chips and at least two sides of the conductive electrodes, and a portion of the conductive electrodes is exposed by the light conversion layer, the LED chip comprising a upper surface and a lower surface opposite to the upper surface of the LED chip, the phosphor layer directly contacts the upper surface of the LED chip, and a base layer contacts the lower surface of the LED chip; the base la

Abstract: An LED lamp includes: a lamp shell; a passive heat dissipating element having a heat sink connected to the lamp shell; a power source disposed in the lamp shell; and a light emitting surface connected to the heat sink of the passive heat dissipating element and comprising LED chips electrically connected to the power source; wherein the heat sink comprises first fins and second fins, each of the first fins is divided into two portions in a radial direction of the LED lamp, the two portions are divided with a gap portion, at least one of the second fins includes a third portion and two fourth portions, the third portion is connected to the fourth portion through a transition portion, the transition portion has a buffer section and a guide section, a direction of any tangent of the guide section is separate from the gap portion.

Abstract: An LED lamp includes: a lamp shell including a lamp head, a lamp neck and a sleeve; a passive heat dissipating element having a heat sink connected to the lamp shell; a power source having a first portion and a second portion; a light emitting surface connected to the heat sink of the passive heat dissipating element and comprising LED chips electrically connected to the power source; a first heat dissipating channel formed in a first chamber of the lamp shell for dissipating heat generated from the power source while the LED lamp is working, and the first chamber is located between bottom of the LED lamp and an upper portion of the lamp neck; and a second heat dissipating channel formed in the heat sink and between the fins and the base of the heat sink for dissipating the heat generated from the LED chips and transferred to the heat sink; wherein a lateral outline of the LED lamp detours around an axis of the LED lamp 360 degrees to turn around to form a contour of the LED lamp, any point on the outline mee

Abstract: An LED lamp includes: a lamp shell including a lamp head, a lamp neck and a sleeve; a passive heat dissipating element having a heat sink connected to the lamp shell; a power source having a first portion and a second portion; a light emitting surface connected to the heat sink of the passive heat dissipating element and comprising LED chips electrically connected to the power source; a first heat dissipating channel formed in a first chamber of the lamp shell for dissipating heat generated from the power source while the LED lamp is working, and the first chamber is located between bottom of the LED lamp and an upper portion of the lamp neck; and a second heat dissipating channel formed in the heat sink and between the fins and the base of the heat sink for dissipating the heat generated from the LED chips and transferred to the heat sink; wherein a lateral outline of the LED lamp detours around the axis of the LED lamp 360 degrees to turn around to form a contour of the LED lamp, the outline includes an out

Abstract: An LED light bulb, comprising of: a lamp housing; a bulb base connected to the lamp housing; a stem connected to the bulb base and located in the lamp housing, the stem comprises a stand extending to the center of the lamp housing; a single LED filament, disposed in the lamp housing, the LED filament comprising: a light conversion layer, coated on at least two sides of the LED chip and the conductive electrodes, and a portion of each of the conductive electrodes is not coated with the light conversion layer, the light conversion layer has at least one top layer and one base layer, the top layer and the base layer are disposed on the opposing surface of the LED chip, wherein the light emitting surface of the LED chips overlaps with the center of the top layer; and two conductive supports, respectively connected with the stem and the LED filament.

Abstract: An LED light bulb, comprising: a lamp housing, a bulb base, connected with the lamp housing; a stem with a stand extending to the center of the lamp housing, disposed in the lamp housing; a single flexible LED filament, disposed in the lamp housing, points of the flexible LED filament in an xyz coordinates are defined as X, Y, and Z, an x-y plane of the xyz coordinates is perpendicular to the height direction of the light bulb, a z-axis of xyz coordinates is parallel with the stem, the filament is bent into spiral in an axial direction, the diameter of the outer spiral coil of the filament is large than the diameter of the intermediate spiral coil of the LED filament in the YZ plane.

Abstract: An LED light bulb, consisting of: a lamp housing; a bulb base connected to the lamp housing; a stem connected to the bulb base and located in the lamp housing, the stem comprises a stand extending to the center of the lamp housing; a single LED filament, disposed in the lamp housing, the LED filament comprising: a plurality of LED sections, each of the LED sections includes at least two LED chips that are electrically connected to each other by a wire; a plurality of conductive sections, each of the conductive sections is located between the two adjacent LED sections and configured to electrically connect the two adjacent LED sections, each of the conductive section includes a conductor connecting the LED sections, and length of the wire being less than that of the conductor, the conductor comprises joint region and transition regions, the joint region is located between the transition regions and configured to connect the transition regions, wherein taking the central point of the LED chip as the center, the

Abstract: An LED lamp includes: a lamp shell including a lamp head, a lamp neck and a sleeve; a passive heat dissipating element having a heat sink connected to the lamp shell; a power source having a first portion and a second portion; a light emitting surface connected to the heat sink of the passive heat dissipating element and comprising LED chips electrically connected to the power source; a first heat dissipating channel formed in a first chamber of the lamp shell for dissipating heat generated from the power source while the LED lamp is working, and the first chamber is located between bottom of the LED lamp and an upper portion of the lamp neck; and a second heat dissipating channel formed in the heat sink and between the fins and the base of the heat sink for dissipating the heat generated from the LED chips and transferred to the heat sink; wherein a lateral outline of the LED lamp detours around an axis of the LED lamp 360 degrees to turn around to form an contour of the LED lamp, any point on the outline me

Abstract: An LED lamp includes: a lamp shell including a lamp head, a lamp neck and a sleeve; a passive heat dissipating element having a heat sink connected to the lamp shell; a power source having a first portion and a second portion; a light emitting surface connected to the heat sink of the passive heat dissipating element and comprising LED chips electrically connected to the power source; a first heat dissipating channel formed in a first chamber of the lamp shell for dissipating heat generated from the power source while the LED lamp is working, and the first chamber is located between bottom of the LED lamp and an upper portion of the lamp neck; and a second heat dissipating channel formed in the heat sink and between the fins and the base of the heat sink for dissipating the heat generated from the LED chips and transferred to the heat sink; wherein a lateral outline of the LED lamp detours around the axis of the LED lamp 360 degrees to turn around to form a contour of the LED lamp, the outline includes an out

Abstract: An LED lamp includes: a lamp shell including a lamp head, a lamp neck and a sleeve; a passive heat dissipating element having a heat sink connected to the lamp shell; a power source having a first portion and a second portion; a light emitting surface connected to the heat sink of the passive heat dissipating element and comprising LED chips electrically connected to the power source; a first heat dissipating channel formed in a first chamber of the lamp shell for dissipating heat generated from the power source while the LED lamp is working, and the first chamber is located between bottom of the LED lamp and an upper portion of the lamp neck; and a second heat dissipating channel formed in the heat sink and between the fins and the base of the heat sink for dissipating the heat generated from the LED chips and transferred to the heat sink; wherein a lateral outline of the LED lamp detours around the axis of the LED lamp 360 degrees to turn around to form a contour of the LED lamp, the outline includes an out

Abstract: An LED tube lamp comprises a lamp tube, two light boards disposed in the lamp tube having a plurality of light sources mounted thereon, two lamp caps respectively disposed at both ends of the lamp tube and having a power supply disposed in the lamp caps, and a support unit. The power supply comprises a circuit board. The support unit is configured to fix the light board and comprises a main body and a support arm. The support arm is disposed on the main body and abutted to the inner surface of the lamp tube, so that the support unit can support the inner surface of the lamp tube.

Abstract: An LED tube lamp comprises a lamp tube; two groups of light boards arranged in the lamp tube, having a first light source and a second light source respectively; and two lamp caps, which are respectively arranged at both ends of the lamp tube. The two groups of the light boards are oppositely arranged in the lamp tube, so that the first light source and the second light source are arranged oppositely, and the light boards are fixed on the inner circumferential surface of the lamp tube.

Abstract: An LED lamp includes: a lamp shell including a lamp head, a lamp neck and a sleeve; a passive heat dissipating element having a heat sink connected to the lamp shell; a power source having a first portion and a second portion; a light emitting surface connected to the heat sink of the passive heat dissipating element and comprising LED chips electrically connected to the power source; a first heat dissipating channel formed in a first chamber of the lamp shell for dissipating heat generated from the power source while the LED lamp is working, and the first chamber is located between bottom of the LED lamp and an upper portion of the lamp neck; and a second heat dissipating channel formed in the heat sink and between the fins and the base of the heat sink for dissipating the heat generated from the LED chips and transferred to the heat sink; wherein a lateral outline of the LED lamp detours around an axis of the LED lamp 360 degrees to turn around to form an contour of the LED lamp, any point on the outline me

Abstract: An LED lamp includes: a lamp shell including a lamp head and a lamp neck, the lamp head connects to the lamp neck; a passive heat dissipating element having a heat sink connected to the lamp shell, wherein the heat sink comprises fins, a total height of the lamp neck and the lamp head is greater than a height of the heat sink; a power source disposed in the lamp shell; and a light emitting surface connected to the heat sink of the passive heat dissipating element and comprising LED chips electrically connected to the power source.

Abstract: An LED tube lamp comprises an LED module for emitting light; a rectifying circuit for rectifying an input external driving signal to produce a rectified signal; and a ballast interface circuit coupled to the LED module and comprising a detection circuit configured to determine that the external driving signal is a high frequency or high voltage signal when the voltage level of the rectified signal is higher than a predefined first threshold level. The ballast interface circuit causes an open circuit for the LED module when the voltage level of the rectified signal is higher than a predefined second threshold level but lower than the predefined first threshold level. And the ballast interface circuit causes current conduction in the LED module when the voltage level of the rectified signal, as based on an external driving signal from an inductive ballast, is lower than the predefined second threshold level.

Abstract: An LED lamp includes: a lamp shell including a lamp head, a lamp neck and a sleeve; a passive heat dissipating element having a heat sink connected to the lamp shell; a power source having a first portion and a second portion; a light emitting surface connected to the heat sink of the passive heat dissipating element and comprising LED chips electrically connected to the power source; a first heat dissipating channel formed in a first chamber of the lamp shell for dissipating heat generated from the power source while the LED lamp is working, and the first chamber is located between bottom of the LED lamp and an upper portion of the lamp neck; and a second heat dissipating channel formed in the heat sink and between the fins and the base of the heat sink for dissipating the heat generated from the LED chips and transferred to the heat sink; wherein a lateral outline of the LED lamp detours around the axis of the LED lamp 360 degrees to turn around to form a contour of the LED lamp, the outline includes an out