A light socket configuration originally intended for light sources based on technologies other than light emitting diodes (LEDs) can be upgraded to accommodate an LED light source. The upgraded socket can be backward compatible with the non-LED light sources and thus may accommodate both LED- and non-LED-based light sources. The upgrade can comprise adding heat management technology to the light socket to address heat sensitivity of LED light sources. A structural portion of the socket can be formed from a material that has a relatively high thermal conductivity in order to conduct heat away from the LED light source. The socket may include heat dissipating fins. An associated heat spreader or heat sink can spread, sink, dissipate, or otherwise manage the heat conducted away from the LED light source.

An E26 wire-plugged bakelite lampholder is composed of a housing, an joint bracket, a threaded ring, a positive electrode plate and a negative electrode plate and installed to a downlight. The lampholder has two wire plug slots for plugging two electrodes of a power line by a bare line section, so that a power source is introduced with a convenient operation. The joint bracket and the housing of the E26 wire-plugged bakelite lampholder are made of a bakelite material, and a combining groove is reserved on the housing to provide for installing and positioning the joint bracket, and further inserting into the combining groove of the housing to engage via the combining latch rod of the joint bracket. In the meantime, the threaded ring of the E26 wire-plugged bakelite lampholder is integrally formed in the housing, so as to facilitate the manufacturing and assembling processes.

A light emitting device including a board, light emitting elements, a wavelength conversion member, and first and second metal plates. The board has a first surface and an opposite second surface, and is longer in a first direction than in a second direction perpendicular to the first direction. The light emitting elements are mounted on the first surface and are arrayed in a row along the first direction. The wavelength conversion member includes a first portion covering the light emitting elements and a second portion covering the second surface. The light emitting elements includes a first light emitting element located closest to the first metal plate, and a second light emitting element located closest to the second metal plate. The light emitting elements on the first surface are located between a first end surface of the first metal plate and a first end surface of the second metal plate.

An LED bulb includes an LED photoelectric module having at least two branches of LED beads with different color temperatures connected in parallel, a control switch connected with one of the branches of LED beads, and an adjustment ring. A total voltage of one branch of LED beads is less than that of each of the other branches of LED beads. The control switch has a ball, the adjustment ring has a magnet, and when the adjustment ring rotates, the magnet draws the ball to roll to switch on or off the control switch. When the control switch is on, the branch of LED beads connected with the control switch is lighted up, and when the control switch is off, the branch of LED beads connected with the control switch is not lighted up.

The present disclosure provides to a lamp socket structure. The lamp socket structure includes a plastic outer housing, a metal inner housing, an insulating bottom plate, a live-wire metal connecting piece, and a neutral-wire metal connecting piece, wherein the metal inner housing is in a cylindric structure, a receiving chamber configured to receive a lamp cap is disposed inside the metal inner housing, a positioning chamber having a small upper portion and a large lower portion vertically runs through a top portion of the metal inner housing, the live-wire metal connecting piece is plugged into the two matting columns, a riveting head is integrally and protrusively fixed to both a top portion of the live-wire metal connecting piece and a top portion of the neutral-wire metal connecting piece, the riveting head being in a U-shaped plate structure; and the metal inner housing, the insulating bottom plate, the live-wire metal connecting piece, and the neutral-wire metal connecting piece constitute a conducting base for conduction of the lamp cap, the plastic outer housing being mounted to the conducting base by an injection molding process. The lamp socket structure is reasonable in design, and may prevent poor contacts at a wire junction due to high temperature at the lamp cap when the wire is mounted. Therefore, this lamp socket structure is suitable to promotion and application.

An LED bulb includes an LED photoelectric module having at least two branches of LED beads with different color temperatures connected in parallel, a control switch connected with one of the branches of LED beads, and an adjustment ring. A total voltage of one branch of LED beads is less than that of each of the other branches of LED beads. The control switch has a ball, the adjustment ring has a magnet, and when the adjustment ring rotates, the magnet draws the ball to roll to switch on or off the control switch. When the control switch is on, the branch of LED beads connected with the control switch is lighted up, and when the control switch is off, the branch of LED beads connected with the control switch is not lighted up.

An optical device includes a light source with at least two radiation sources, and at least two layers of wavelength-modifying materials excited by the radiation sources that emit radiation in at least two predetermined wavelengths. Embodiments include a first plurality of n radiation sources configured to emit radiation at a first wavelength. The first plurality of radiation sources are in proximity to a second plurality of m of radiation sources configured to emit radiation at a second wavelength, the second wavelength being shorter than the first wavelength. The ratio between m and n is predetermined. The disclosed optical device also comprises at least two wavelength converting layers such that a first wavelength converting layer is configured to absorb a portion of radiation emitted by the second radiation sources, and a second wavelength converting layer configured to absorb a portion of radiation emitted by the second radiation sources.

A weather-resistant socket assembly is adapted to be used with a string light. The weather-resistant socket assembly for a string light, comprises an electrically powered housing having an opening, a chamber extending from the opening, and a ridged wall covering a portion of an internal periphery of the electrically powered housing; and a socket comprising electrical connections adapted to power the socket and a cooperating ridged wall covering a portion of an external periphery of the socket. When the socket is inserted in the chamber of the electrically powered housing, the ridged wall and the cooperating ridged wall come into contact and the contact prevents a rotation of the socket relative to the electrically powered housing. Further described is a solar string light that comprises the weather-resistant socket assembly.

Apparatus and associated methods relate to an energy efficient and pollution reducing post top lamp. In an illustrative example, a replaceable light unit (RLU) includes a LED package distributed about a first axis of the RLU. The LED package, for example, may emit a light being redirected by a first optical element to generate a first optical distribution along a first optical axis in a first direction, the first optical axis being substantially parallel to the first axis. The first optical distribution may be, for example, reflected by a second optical element such that at least a portion of the light in the first optical distribution may be reflected into a second optical distribution. For example, at least fifty percent of the light in the second optical distribution may be greater than fifty degrees from the first optical axis. Various embodiments may advantageously conserve energy and/or reduce light pollution.

An LED lamp that can take the place of incandescent lamps. An elevated light source is positioned above a screw-type base. A first plurality of LEDs is connected in a series on one side of a flat substrate and a second plurality of LEDs, equal in number to the first, is connected in series on an opposite side of the substrate. Each LED of the first and second plurality of LEDs is mounted proximate a heat sink and a drive circuit is provided for the LEDs, with the drive circuit being located proximate and electrically connected to the screw base.