An LED tube lamp includes a tube having two ends, two end caps respectively at the two ends of the tube, a power supply module in one or both of the end caps, an LED light strip in the tube; and LED light sources on the LED light strip. Each of the end caps includes a lateral wall substantially coaxial with the tube and an end wall substantially perpendicular to an axial direction of the lateral wall. An axial direction of one or more openings of each of the end caps is substantially parallel with the axial direction of the lateral wall. The LED light sources are electrically connected to the power supply module via the LED light strip. The power supply module includes a fuse, and the fuse is positioned close to the end wall of the first end cap.

An LED tube lamp includes a tube having two ends, two end caps respectively at the two ends of the tube, a power supply module in one or both of the end caps, an LED light strip in the tube; and LED light sources on the LED light strip. Each of the end caps includes a lateral wall substantially coaxial with the tube and an end wall substantially perpendicular to an axial direction of the lateral wall. An axial direction of one or more openings of each of the end caps is substantially parallel with the axial direction of the lateral wall. The LED light sources are electrically connected to the power supply module via the LED light strip. The power supply module includes a fuse, and the fuse is positioned close to the end wall of the first end cap.

There is provided a lens for a light emitter which includes: a bottom surface; an incident surface connected to the bottom surface at a central region of the bottom surface and disposed on or above a light source to allow light emitted from the light source to be made incident thereto and travel in an interior of the lens; and an output surface connected to the bottom surface at an edge of the bottom surface and configured to allow the light which has traveled in the interior of the lens to be emitted outwardly therefrom, wherein the central region of the bottom surface protrudes with respect to the other region of the bottom surface.

An LED lamp retrofit system, kit, and method is presently disclosed. The LED retrofit system comprises at least one longitudinally extending LED lamp having a length substantially greater than a width and open longitudinal ends. A first LED lamp support rail holds and covers a first open longitudinal end of each of the at least one longitudinally extending LED lamps and is configured to electrically connect each of the at least one longitudinally extending LED lamps to a power source. A second LED lamp support rail holds and covers a second open longitudinal end of each of the at least one longitudinally extending LED lamps held with the first LED lamp support rail. A system holder on each of the first and second LED lamp support rails is configured and disposed to hold the retrofit system to a portion of a lamp fixture being retrofitted.

An LED lamp retrofit system, kit, and method is presently disclosed. The LED retrofit system comprises at least one longitudinally extending LED lamp having a length substantially greater than a width and open longitudinal ends. A first LED lamp support rail holds and covers a first open longitudinal end of each of the at least one longitudinally extending LED lamps and is configured to electrically connect each of the at least one longitudinally extending LED lamps to a power source. A second LED lamp support rail holds and covers a second open longitudinal end of each of the at least one longitudinally extending LED lamps held with the first LED lamp support rail. A system holder on each of the first and second LED lamp support rails is configured and disposed to hold the retrofit system to a portion of a lamp fixture being retrofitted.

An elongated modular heat sink array having through power and/or data flowing from end to end powering and/or communicating with externally mounted coupled electronic devices.

An elongated modular heat sink array having through power and/or data flowing from end to end powering and/or communicating with externally mounted coupled electronic devices.

An LED lamp A includes a plurality of LED modules 2 each including an LED chip 21, and a support member 1 including a support surface 1a on which the LED modules 2 are mounted. The LED modules 2 include a plurality of kinds of LED modules, or a first through a third LED modules 2A, 2B and 2C different from each other in directivity characteristics that represent light intensity distribution with respect to light emission directions. This arrangement ensures that the entire surrounding area can be illuminated with sufficient brightness.

An LED lamp A includes a plurality of LED modules 2 each including an LED chip 21, and a support member 1 including a support surface 1a on which the LED modules 2 are mounted. The LED modules 2 include a plurality of kinds of LED modules, or a first through a third LED modules 2A, 2B and 2C different from each other in directivity characteristics that represent light intensity distribution with respect to light emission directions. This arrangement ensures that the entire surrounding area can be illuminated with sufficient brightness.

An LED tube lamp is disclosed. The LED tube lamp includes a lamp tube, a first external connection terminal and a second external connection terminal coupled to the lamp tube and for receiving an external driving signal, a rectifying circuit coupled to the first external connection terminal and the second external connection terminal and configured to rectify the external driving signal to produce a rectified signal, a filtering circuit coupled to the rectifying circuit and configured to filter the rectified signal to produce a filtered signal, an LED module coupled to the filtering circuit and configured to receive the filtered signal for emitting light; and a conduction-delaying circuit coupled to the rectifying circuit and comprising a conduction-delaying device, wherein the conduction-delaying circuit is configured such that when the external driving signal is initially input to the LED tube lamp, the conduction-delaying device is in an open-circuit state, and then the conduction-delaying device will enter a conducting state when voltage across the conduction-delaying device exceeds the conduction-delaying device's trigger voltage value, wherein the conducting state of the conduction-delaying device causes the LED module to conduct current for emitting light.