摘要:
An LED based illumination device includes an and a LED based light engine and a light control and communications gateway (LCCG). An LED driver in the LCCG receives receives a light control command via a lighting control network interface and in response provides an an electrical current that controls the amount of light produced by the LED based light engine. The lighting control network interface of the LCCG is communicatively coupled to a lighting control network. The LCCG additionally includes a building management network interface that is communicatively coupled to a building management network. Identification and operational data for a plurality of LED based illumination devices communicatively coupled to the lighting control network is stored in memory, and operational data is communicated from the LCCG over the building management network interface to a building management system communicately coupled to the LCCG over the building management network.
摘要:
An LED based illumination device includes a receiver and a transmitter for communications adhering to a lighting control communications protocol and a high speed communications protocol. The LED based illumination device may be part of a lighting control network, wherein the data transmission rate of the high speed communications protocol is more than twice that of the lighting control communications protocol. The lighting control network may be coupled to a digital communications gateway, including a digital communications interface configured to be coupled to a network operating in accordance with an internet protocol and a lighting control network interface coupled to the lighting control network. A processor determines a summary status value of the LED based illumination device based on information stored in memory of the digital communications gateway. The digital communications gateway may periodically transmit the time of day to the LED based illumination device over the lighting control network.
摘要:
A Light Emitting Diode (LED) based illumination device may include a Light Control and Data Interface Module (LCDIM). The LCDIM may include an LED driver that supplies electrical power to the LED based light engine of the LED based illumination module. The LCDIM may include a radio frequency (RF) transmitter that communicates a signal indicative of an operational status of the LED based light engine to another device on a wireless communications network using a Bluetooth Low Energy (BLE) advertising packet. Additionally, in a lighting control system, a light control device may include a RF transmitter to communicate a signal indicative of a lighting control command to the LCDIM using a BLE advertising packet.
摘要:
An LED based illumination device includes a plurality of LEDs that emit light through an output port of a housing. The LED based illumination device includes a heat sink that is in thermal contact with the plurality of LEDs. A peripheral electrical circuit board is configured to be contained within the housing, e.g., surrounding at least a portion of the heat sink. The peripheral electrical circuit board may include a radio frequency (RF) transceiver configured to communicate data between the LED based illumination device and another electronic device. A primary electrical circuit board may be electrically coupled to the peripheral electrical circuit board and electrically coupled to the plurality of LEDs.
摘要:
An illumination module includes a color conversion cavity with a first interior surface having a first wavelength converting material and a second interior surface having a second wavelength converting material. A first LED is configured to receive a first current and to emit light that preferentially illuminates the first interior surface. A second LED is configured to receive a second current and emit light that preferentially illuminates the second interior surface. The first current and the second current are selectable to achieve a range of correlated color temperature (CCT) of light output by the LED based illumination device.
摘要:
An illumination module includes a plurality of Light Emitting Diodes (LEDs). The illumination module may include a reflective color converting element with a PTFE layer and a color converting layer fixed to the PTFE layer. The color converting layer includes phosphor particles embedded in a polymer matrix and has a thickness that is less than five times an average diameter of the phosphor particles. The illumination module may include a transmissive color converting element. The color converting elements may be produced by mixing a polymer binder with a solvent and phosphor particles to form a homogeneous suspension of the phosphor particles. The homogeneous suspension is applied to a surface to form an uncured color converting layer, which is heated to vaporize the solvent. The cured color converting layer includes the phosphor particles suspended in the polymer binder.
摘要:
A mounting collar on a light fixture provides a compressive force between the illumination module and a light fixture. For example, a mounting collar that is fixed to the light fixture may engage with an illumination module to deform elastic mounting members on the illumination module to generate the compressive force. The mounting collar may include tapered features on first and second members that are moveable with respect to each other and that when engaged generate the compressive force. The mounting collar may include elastic mounting members on first and second members that move with respect to each other, wherein the movement deforms the elastic mounting members to generate the compressive force. The mounting collar may include an elastic member, wherein movement movement of the mounting collar relative to a light fixture deforms the elastic member to generate the compressive force.
摘要:
An illumination module includes a plurality of Light Emitting Diodes (LEDs) and a light conversion sub-assembly mounted near but physically separated from the LEDs. The light conversion sub-assembly includes at least a portion that is a polytetrafluoroethylene (PTFE) material that also includes a wavelength converting material. Despite being less reflective than other materials that may be used in the light conversion sub-assembly, the PTFE material unexpectedly produces an increase in luminous output, compared to other more reflective materials, when the PTFE material includes a wavelength converting material.
摘要:
An illumination module includes a plurality of Light Emitting Diodes (LEDs). A grid structure is present on a transmissive layer over the LEDs, such as an output window, to form a plurality of color conversion pockets. A portion of the pockets are coated with a first type of wavelength converting material while other portions of the pockets are coated with a different type of wavelength converting material.
摘要:
An LED based illumination module includes a thermal interface surface that is coupled to a thermal interface surface of a reflector using engaging members that generate a compressive force between the thermal interface surfaces. The engaging members may be, e.g., protrusions that interface with recesses, spring pins, formed sheet metal, magnets, mounting collar, etc. The reflector may include a vented portion that is not optically coupled to the LED based illumination module to allow air to pass through the reflector.