Philips Lighting Holding B.v.

Koninklijke Philips Corporation N.V.

Signify Holding B.v.

Fudan University

Chuan Yuan

Yan Xiong

Xiaoqing Duan

Bao Wang

Ye Liu

Mo Shen

Lin Wang

Wenyi Li

Qingqing Jiang

Muqing Liu

Xiaoli Zhou

James M Gaines

Yun Li

Hao Jiang

Wanlu Zhang

Donald Bouton Ellingham, Jr

Kai Han

Yuefeng Zhang

Lin Nan Li

Rosen Guo

Qianying Dai

Zhigang Pei

A horticultural lighting device for sustaining indoor plant growth, wherein said horticultural lighting device comprises lighting unit arranged for providing illumination in accordance with one of a plurality of modi, wherein, for each modus, said lighting unit is arranged for differentiating in different growth stages of a plant by illuminating in different electromagnetic spectrums, a power unit arranged for receiving an Alternating Current, AC, mains supply voltage and for providing power to said lighting unit, and a control unit arranged for detecting interruptions in said received AC mains supply voltage and for cycling through said plurality of modi for said lighting unit triggered by detected interruptions.

Horticultural lighting device for sustaining indoor plant growth as well as corresponding horticultural lighting system and method

A lighting device () comprising a housing () comprising a polymer material, the housing including an elongated hollow neck portion () and a collar portion () arranged at an end of the neck portion. The collar portion includes an essentially annular surface () surrounding the end of the neck portion peripherally. The collar portion has a metalized surface. The surface is structured into a plurality of electrically conductive pads () and the pads are electrically isolated from each other. A plurality of light emitting elements () are arranged on the collar portion of the housing. Each of the light emitting elements has a first terminal () electrically connected to a first electrically conductive pad () and a second terminal () electrically connected to a second electrically conductive pad (). The collar portion is directly in contact with the surroundings, promoting an improved heat transfer from the light emitting elements. The lighting device further comprises an annular lens () arranged to cover the collar portion and configured to refract light from the light emitting elements.

Lighting device with an improved housing

A lamp () for replacement of a HPS or HID lamp, is disclosed that comprises a support element () including a mounting shaft () extending therefrom, said mounting shaft being substantially parallel and having lateral displacement relative to a central axis of the lamp and a plurality of modules () each comprising a heat spreading element () wherein at least one module is mounted on the mounting shaft and is rotatable about the mounting shaft such that said at least one module can be pivoted between a first orientation in which the modules cooperate to define a closed structure; and a second orientation in which the at least one module is pivoted away from at least one neighboring module to define an opened structure. The lamp further comprises a plurality of sets of solid state lighting elements () wherein each set is mounted on an outer surface () of one of said modules, and a holder () for holding the support element (), wherein the holder comprises a lamp cap () to connect the lamp () to a power source, wherein the lamp cap is compatible with a socket for the HPS or HID lamp to be replaced. A luminaire including such a lamp is also disclosed.

Solid state lighting device and luminaire

A lighting device () comprising a driver () arranged at a base () of the lighting device (), a heat sink () arranged at a portion () of the lighting device (), separate from the driver (), a light source () mounted to the heat sink (), and a wire () arranged to electrically connect the light source () to the driver (), wherein a portion of the wire () extending from the base () to the portion of the lighting device () is arranged to be exposed to light from the light source (). The present embodiment is advantageous in that the thermal performance is improved and the lifetime of the lighting device () is increased. Further, the exposed wire () may be illuminated by the light source () and visible from outside the lighting device (), thereby having the appearance of a filament.

Lighting device having a light source heat sink arranged separate from a driver

A LED light bulb () having at least one LED (-). Light output from the LED is directed toward an offset scattering optics structure () that intersects and scatters the light output. The LED may optionally be paired with a narrow beam optical piece (--) to focus and direct the light output of the LED toward the scattering optics structure. A mounting structure () may support the scattering optics structure and offset the scattering optics structure from the LED.

LED light bulb with light scattering optics structure

The invention provides an illumination apparatus () and a method of assembling the illumination apparatus. The illumination apparatus comprises a light source () having a plurality of LED arrays, wherein at least two of the plurality of LED arrays have different lumen degradations as a function of junction temperature of the respective LED arrays; and a heat dissipation unit () configured to be capable of dissipating heat generated by the light source, wherein the heat dissipation unit is mounted on a first surface of the light source in such a way that there is a gap between the first surface and the heat dissipation unit when the light source is not in operation, and the gap is narrowed or can be deemed to disappear when the light source reaches a preset temperature, so that the heat dissipation efficiency of the heat dissipation unit is improved.

Illumination apparatus and a method of assembling the illumination apparatus

This invention belongs to the luminous flux measurement field, and especially relates to the equipment and method for LED's total luminous flux measurement with a narrow beam standard light source. The system for LED's total luminous flux measurement with a narrow beam standard light source in this invention comprises an integrating sphere, the light source, a narrow aperture fiber, a spectrometer and a driver for the light source. The light source is lighted by the driver. The narrow beam standard light source (both luminous flux standard and spectrum standard) is placed on the interior surface of integrating sphere, there is not any baffle in the sphere, and a narrow aperture fiber transfers the light to a multi-channel spectrometer which measures the spectrum distribution of LED and calculates its total luminous flux. The equipment in this invention is easy to use, has small error and low cost, and can achieve accurate results for LED's total luminous flux.

Equipment and method for LED's total luminous flux measurement with a narrow beam standard light source

Growing community of inventors

Shanghai, China

Chuan Yuan