A light bulb holder structure and a light bulb having same, in which the bulb cap of the light bulb holder is provided with a plurality of grooves in a tactful manner, and the depth of the grooves is greater than that of the external threads of the bulb cap, such that after the bulb cap is mounted on the light bulb and the light bulb is mounted on the light socket, the water accumulated between the light bulb holder structure and the light socket can be effectively discharged through the grooves. As a result, failure of the insulator (connector) on the light bulb holder structure caused by water accumulation can be avoided to a certain extent, thereby improving the reliability and safety of the light bulb.

A lighting device configured to deactivate pathogens in an environment. The lighting device includes a housing, means for mounting the housing to a surface in the environment, one or more first light-emitting elements arranged in the housing and configured to each produce disinfecting light having a wavelength in a first range of wavelengths, and one or more second light-emitting elements arranged in the housing and configured to each produce disinfecting light having a wavelength in a second range of wavelengths different from the first range of wavelengths. The disinfecting light produced by the first light-emitting elements and the disinfecting light produced by the second light-emitting elements mix to form a combined light, the combined light being visible light other than white light.

Methods and apparatus for providing circadian-friendly LED light sources are disclosed. A light source is formed to include a first LED emission (e.g., one or more LEDs emitting a first spectrum) and a second LED emission (e.g., one or more LEDs emitting a second spectrum) wherein the first and second LED emissions are combined in a first ratio and in a second ratio such that while changing from the first ratio to the second ratio the relative circadian stimulation is varied while maintaining a color rendering index above 80.

An LED lighting device or LED lamp comprising one or more LED packages; and a switch control unit is provided. The switch control unit is configured to operate the one or more LED packages. The switch control unit is in communication with a sensor located in a space, the LED lighting device or LED lamp also being located in the space. The switch control unit is configured to (i) receive a sensor signal from the sensor, (ii) process the sensor signal, (iii) determine an adjustment to the operating light qualities of the LED lighting device or LED lamp based on the processing of the sensor signal and one or more goal light qualities corresponding to the space, and (iv) adjust the operation of the one or more LED packages in accordance with the adjustment.

An LED lighting device or LED lamp comprises one or more LED packages, and a switch comprising at least two selectable positions. At least one selectable position corresponds to a set operating mode and one selectable position corresponds to a configurable operating mode. When the switch is in the selectable position corresponding to the set operating mode, responsive to receiving an indication of user input for selecting user-selected operating light qualities, the one or more LED packages continue to be operated in accordance with the predefined operating light qualities corresponding to the set operating mode. When the switch is in the selectable position corresponding to the configurable operating mode, responsive to receiving an indication of user input for selecting user-selected operating light qualities, operation of the one or more LED packages is modified in accordance with the user-selected operating light qualities.

A multiple function LED night light has at least one LED device and added function(s) such as an air-freshener adaptor device, sonic device, frequency device, sensor device, bug repeller device, second light device, timepiece, electric message device, timer device, temperature device, surge protection device, electric short circuit protection device, base device for installation on an existing lamp socket, emergency light device, or any other electric device(s) suitable for home use to keep people comfortable or safe. The LED device has a first optic means to change the narrow-viewing angle of an LED's spot-light beams into a wider-viewing angle and second optic means to help make the LED night light exhibit a smooth lighting effect. The device may be arranged to fit into an existing night light bulb socket to turn any existing bulb night light into a power saving LED night light.

The (LED or-and Laser) light source for bulb or light device such as garden light that has at least one of or more than one optics-lens, and light device has one top cover having shape of flat or ½ ball, ⅔ ball, sphere, dome shape for top cover. Foe laser light source incorporate with flat top protective lens and laser film or grating film to enlarge or created plurality of image, lighted patterns. For LED light source can has project assembly which is a built-in or add-on or assembled inside of said light device. Further can incorporated flexible bendable arms to change position, direction, orientation of (LED or-and Laser) light beam. The said Light device also can offer near-by and far-away illumination, or-and lighted image, pattern projection with desired light effects by rotating optic-lens or LED(s). It also can get desired effects while LED(s) controlled by IC or circuitry making LED(s) for color changing or on-off on desired time, duration, cycles. The light device further can have more than one function selected from USB charger, power failure, RF remote control, Infra-red controller, blue-tooth, wifi, internet, App software, motion sensor and wireless with multiple-way communication. Also, light device may have rechargeable circuit, batteries or rechargeable battery, USB ports for the (LED or-and Laser)-bulb be charged or supply other device current.

An LED or laser projection light has more than one function, which may include functions of a conventional all-purpose light device and additional projection light functions using different light sources to project a light beam, image, or digital data from a digital data storage means, as well as functions of a desk top light, floor light, garden light, emergency light, safety light, anti-burglar light, underwater light, street light, reading light, night light, light fixture, motion sensor light, power fail light, photo sensing light, dimmable light, spotlight, seasonal light, Christmas light and/or ornament, licensee products, cartoon character related products, promotion light, commercial light, sign, motion sensor light, blue tooth light, moving device light, car light, vehicle light, boat light, aircraft light, and or multi-function LED light or Laser, with rechargeable or non-rechargeable energy storage kits having preferred circuit means, switch means, sensor means, timer means, IC means, electric parts, and accessories.

A light emitting device includes a first metal plate, a second metal plate, and light emitting elements between the metal plates. The device further includes a wavelength conversion member excited by a first light from the light emitting elements to emit a second light having a wavelength different from the first light, a bulb including a base, a first lead connected to the first metal plate, and a second lead connected to the second metal plate. The base of the bulb includes terminals connected to respective leads. The conversion member covers the light emitting elements entirely, opposite surfaces of the first metal plate partially, and opposite surfaces of the second metal plate partially. The first lead is connected to a portion of the first metal plate exposed from the conversion member, and the second lead is connected to a portion of the second metal plate exposed from the conversion member.

A water purifier including a water discharge unit configured so that purified, cold, and hot water are selectably dischargeable therethrough, the water discharge unit including a rotatable body, a water discharge tube having a changeable position according to rotation of the body, and a display device including a first and a second light source, a light guide cover, and a guide case to guide light emitted from the first and second light source so as to be incident on the light guide cover, and to prevent mixing of the light from the first and the second light sources. The light guide cover projects the light from the first light source in a direction of water discharge from the water discharge tube, and projects the light from the second light source toward an outer peripheral surface of the display device to indicate which of purified, cold, and hot water is selected.