WO2015031328A1 - Procédés et dispositifs pour fournir un éclairage par del - Google Patents

Procédés et dispositifs pour fournir un éclairage par del Download PDF

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Publication number
WO2015031328A1
WO2015031328A1 PCT/US2014/052652 US2014052652W WO2015031328A1 WO 2015031328 A1 WO2015031328 A1 WO 2015031328A1 US 2014052652 W US2014052652 W US 2014052652W WO 2015031328 A1 WO2015031328 A1 WO 2015031328A1
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WO
WIPO (PCT)
Prior art keywords
leds
lighting device
led
efficacy
proceeding
Prior art date
Application number
PCT/US2014/052652
Other languages
English (en)
Inventor
Daniel Stewart Lang
Original Assignee
Photon Holding Llc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Photon Holding Llc filed Critical Photon Holding Llc
Publication of WO2015031328A1 publication Critical patent/WO2015031328A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/54—Cooling arrangements using thermoelectric means, e.g. Peltier elements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
    • H10N10/10—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects
    • H10N10/13—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects characterised by the heat-exchanging means at the junction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/64—Heat extraction or cooling elements
    • H01L33/645—Heat extraction or cooling elements the elements being electrically controlled, e.g. Peltier elements

Definitions

  • This disclosure generally relates to systems, methods, and devices for providing Light Emitting Diode (“LED”) lighting.
  • LED Light Emitting Diode
  • This disclosure also relates to systems, methods, and devices for providing Organic Light Emitting Diode (“OLED”) lighting.
  • OLED Organic Light Emitting Diode
  • This disclosure also relates to systems, methods, and devices for providing LED lighting with reduced energy consumption.
  • LED lighting has come to the forefront as a more efficient means of providing household and commercial lighting. In contrast to most conventional lighting techniques, LEDs generally require electrical flow in one direction or direct current (“DC”) in order to produce light. Since standard building wiring throughout the world is alternating current (“AC”), LED lighting designs typically take one of two prevailing approaches to insure sustainable light.
  • DC direct current
  • AC alternating current
  • the first approach utilizes a driver circuit that converts AC to DC, steps down, and conditions the power.
  • a typical converter design currently in the market utilizes up to eighty components to achieve the conversion and may use additional components if dimming is required.
  • the second approach is to use AC LED technology.
  • the LEDs may be isolated or substantially isolated from each other to avoid or reduce optical, thermal, and/or electrical interference associated with the production of visible light.
  • a plurality of the LEDs may be isolated or substantially isolated from each other to avoid or reduce optical, thermal, and/or electrical interference associated with the production of visible light.
  • one or more LEDs may not be isolated or substantially isolated from each other to avoid or reduce optical, thermal, and/or electrical interference associated with the production of visible light, if so desired.
  • Exemplary embodiments may provide a method for blocking the adverse effects on LEDs of light produced by adjacent LEDs in LED arrays.
  • Certain embodiments may provide a device, system and/or method for blocking, reducing, or substantially blocking certain adverse effects on LEDs of light produced by adjacent LEDs in LED arrays.
  • the first LED hits another LED (the second LED) there may be at least two different things that negatively affect the ability of the second LED to produce light.
  • the reflected light creates a voltage in the second LED (i.e., electrical interference), which negatively affects the ability of the second LED to produce photons.
  • the light emitted by the first LED reflects off the lens covering the second LED (i.e., optical interference) reducing the ability of the second LED to emit its own light- producing photons.
  • a lens or reflector between the LEDs may be utilized to block the path of light from one LED to another LED.
  • reflectors or shields reduce and/or eliminate at least one or both of the electrical and optical interference of the first LED on the second LED.
  • at least one lens, at least one reflector, and/or at least one shield between the LEDs may be utilized to block, reduce, or substantially block the path of light from one LED to another LED.
  • These lenses, reflectors and/or shields reduce, substantially eliminate, partially eliminate and/or eliminate at least one or both of the electrical and optical interference of the at least one first LED on the at least one second LED.
  • active heat management may be implemented using a thermoelectric device(s) that convert heat generated by the LEDs and/or other components (including, e.g., the sun, resistors, capacitors, transformers and/or other electrical components on the circuit) into electrical energy that is used to cool the LEDs.
  • thermoelectric device(s) that convert heat generated by the LEDs and/or other components (including, e.g., the sun, resistors, capacitors, transformers and/or other electrical components on the circuit) into electrical energy that is used to cool the LEDs.
  • thermoelectric generators thermally connected to the LEDs and/or transformers may be used to convert the emitted heat into electrical energy.
  • at least one thermoelectric generator may be in thermal communication with at least one LED and/or at least one transformer and such a configuration may be used to convert the emitted heat into electrical energy.
  • the electrical energy may be used to power another thermoelectric device(s) that actively cools the LEDs.
  • this approach may be advantageous to typical passive aluminum heat sinks for at least three reasons, first the heat sink simply removes, or reduces, the heat but is unable to utilize it for other purposes, second, in many cases the heat sink(s) may be integrated and the heat they dissipate is for the most part trapped in the fixture housing rendering it useless over time and third, heat sinks may work against an outdoor circuit, when heated by the sun's thermal energy the heat sink may transfer the heat directly back to the circuit the heat sink is supposed to protect causing a much shorter life of the circuit and the circuits components. Certain disclosed embodiments address these and/or other issues and provide one or more advantages over existing LED products.
  • a pair of AC powered LEDs with opposite polarity may be used to produce constant light.
  • the paired LEDs when positioned in close proximity to each other produce a steady stream of light without a noticeable strobe effect notwithstanding that each LED is cycling at e.g., between 50-60 pulses per second.
  • power control at the component level may be utilized to minimize and/or reduce power consumption and optimize and/or
  • the device and/or system may utilize only a few components to produce light from the LEDs.
  • the main component may be a step transformer that may be governed by two resistors.
  • the active heat management system may have no outside power consumption as it may be powered by wasted energy of the transformers and resistors and may be on an entirety isolated circuit. In certain embodiments, the heat management system may have no outside power
  • the LED lighting may not require the conversion of power from AC to DC or the storage of current as used by current systems, each of which results in loss of energy.
  • the LED lighting may:
  • a standard dimmer may be used to dim the LED lighting
  • the life of the LED may be extended because of combinations of one or more of the following: (1 ) half operation of the LEDs as discussed in exemplary double string A/C embodiments; (2) reducing the current through each LED (or through a plurality of LEDs) by using more LEDs per fixture; (3) maintaining the LEDs in a cooler operating and ambient temperature; (4) not subjecting the LEDs to the high temperatures of a reflow process often used in populating circuit boards; (5) eliminating, or at least reducing, the printed circuit board primarily used for LED lighting and utilizing a substrate that eliminates, or at least reduces, thermal build up around the LEDs; and/or (6) eliminating, or at least reducing, the printed circuit board primarily used for LED lighting and utilizing the substrate that is part of a system to harvest the unwanted LED thermal energy and/or convert it into electrical energy to be used by additional LEDs, to operate chillers, or other electronic needs.
  • the life of the LED may be extended
  • Exemplary embodiments may provide a lighting device comprising: a plurality of LEDs; a plurality of optic devices corresponding to the plurality of LEDs; at least one optical separator for substantially preventing the light emitted from one LED from effecting the other LEDs; a thermoelectric device configured to harvest heat generated by the LEDs and convert the harvested heat into electrical energy; and a low temperature material for creating a temperature difference across the
  • thermoelectric device thermoelectric device
  • Exemplary embodiments may provide a lighting device comprising: a plurality of LEDs; a plurality of optic devices corresponding to the plurality of LEDs; at least one optical separator for substantially preventing the light emitted from one LED from effecting the other LEDs; optionally a thermoelectric device configured to harvest heat generated by the LEDs and convert the harvested heat into electrical energy and a low temperature material for creating a temperature difference across the thermoelectric device.
  • At least one optical separator substantially prevents a change in refractive index of the other LEDs.
  • At least one optical separator substantially prevents a photovoltaic effect on the other LEDs.
  • the low temperature material is a phase change material.
  • the harvested electrical energy is used to aid in maintaining the low temperature material at a low temperature.
  • the harvested electrical energy is used to aid in powering at least one additional LED.
  • the lighting device is supplied with DC voltage.
  • the DC power may be harvested from the site where the light is needed (e.g., waste thermal energy from a water line or other local process, rectified radio waves, sunlight, etc.).
  • the lighting device is supplied with AC voltage and at plurality of LEDs are arranged such that about 50% are in a first polarity and about 50% are in a reverse polarity.
  • Exemplary embodiments may provide a lighting device comprising: a plurality of lighting means for providing light; a plurality of optic means corresponding to the plurality of lighting means; at least one optical separator means for substantially preventing the light emitted from one lighting means from affecting the other lighting means; thermoelectric means configured to harvest heat generated by the lighting means and convert the harvested heat into electrical energy; and a low temperature means for creating a temperature difference across the thermoelectric device.
  • the lighting means may be LEDs, including OLEDs.
  • At least one optical separator means substantially prevents a change in refractive index of the other LEDs.
  • At least one optical separator means for substantially preventing a photovoltaic effect on the other LEDs may be provided.
  • the low temperature means is a phase change material.
  • the generated electrical energy is used to aid in maintaining the low temperature means for storing thermal energy at a low temperature.
  • the generated electrical energy is used to aid in powering at least one additional lighting means.
  • the generated electrical energy may be used to aid in powering a device not associated with the lighting device but able to be powered by the generated energy (e.g., smoke detectors, motion detectors, cameras, etc.).
  • the generated electrical energy may be used to aid in powering a device associated with the lighting device that can be powered by the generated energy (e.g., timers, controllers, servos, etc.).
  • the lighting device may be supplied with AC voltage and at plurality of LED means are arranged such that about 50% are in a first polarity and about 50% are in a reverse polarity and the voltage is stepped up or down by use of a transformer with governing resistance.
  • the lighting device may be supplied with AC voltage where the number of LEDs placed in series equals the A/C input voltage to reduce (or substantially eliminate) the efficiency loss of a transformer.
  • the lighting device may be supplied with AC voltage and a plurality of LEDs means are arranged such that about 50% are in a first polarity and about 50% are in a reverse polarity and the lighting device is supplied with AC voltage where the forward voltage of the LED's placed in series match the supplied AC voltage to eliminate the efficiency loss of a transformer.
  • the lighting device may be supplied with AC voltage and the first four LEDs are configured as diodes in a typical rectifying pattern where the reverse current allowable for the LEDs is not exceeded giving the remaining LED DC power and the forward voltage of the LED's placed in series matching the supplied AC voltage.
  • the lighting device may be supplied with AC voltage and the at least first four LEDs are configured as diodes in a rectifying pattern where the reverse current allowable for the LEDs is not exceeded giving the remaining LEDs DC power and the forward voltage of the LED's placed in series matching, or substantially matching, the supplied AC voltage and at least one thermoelectric chiller may be placed in the circuit after the first four LEDs configured as diodes in a rectifying pattern.
  • the lighting device may be supplied with AC voltage and the first four LEDs are configured as diodes in
  • the lighting device may be supplied with AC voltage and the at least first four LEDs are configured as diodes in a rectifying pattern where the reverse current allowable for the LEDs is not exceeded giving the remaining LED DC power and the voltage is stepped up or down by use of at least one transformer with governing resistance and at least one thermoelectric chiller may be placed in the circuit after the first four LEDs configured as diodes in a rectifying pattern.
  • the lighting device may be supplied with AC voltage and four blocking diodes may be included in a typical rectifying pattern to convert the AC to DC giving the LEDs DC power and the voltage is stepped up or down by use of a transformer with governing resistance.
  • the lighting device may be supplied with AC voltage and four blocking diodes may be included in a typical rectifying pattern to convert the AC to DC giving the LEDs DC power and the voltage is stepped up or down by use of a transformer with governing resistance and a thermoelectric chiller may be placed in the circuit after the first four LEDs configured as diodes in a typical rectifying pattern.
  • the lighting device may be supplied with AC voltage and four blocking diodes may be included in a typical rectifying pattern to convert the AC to DC giving the LEDs DC power and the voltage is dealt with by the number of LED's placed in series on the circuit eliminating the need for of a transformer with governing resistance.
  • the lighting device may be supplied with AC voltage and four blocking diodes may be included in a typical rectifying pattern to convert the AC to DC giving the LEDs DC power and the voltage is dealt with by the number of LED's placed in series on the circuit eliminating the need for of a transformer with governing resistance and a thermoelectric chiller may be placed in the circuit after the four blocking diodes configured as diodes in a typical rectifying pattern.
  • the lighting device may be supplied with AC voltage and four blocking diodes may be included in a typical rectifying pattern to convert the AC to DC giving the LEDs DC power, the voltage being dealt with by the number of LED's placed in series on the circuit
  • SUBSTITUTE SHEET RULE 26 eliminating the need for of a transformer with governing resistance and a capacitor may be added between the rectifying circuit and the LEDs to smooth out current ripple.
  • the lighting device may be supplied with AC voltage and four blocking diodes may be included in a typical rectifying pattern to convert the AC to DC giving the LEDs DC power, the voltage being dealt with by the number of LED's placed in series on the circuit eliminating the need for of a transformer with governing resistance, a capacitor may be added between the rectifying circuit and the LEDs to smooth out current ripple and a thermoelectric chiller may be placed in the circuit after the four blocking diodes configured as diodes in a typical rectifying pattern.
  • the lighting device may be supplied with AC voltage and four blocking diodes may be included in a typical rectifying pattern to convert the AC to DC giving the LEDs DC power, the voltage being dealt with by the number of LED's placed in series on the circuit eliminating the need for of a transformer with governing resistance and a fuse may be added on the neutral lead before the rectifying circuit to protect the lighting device from power spikes.
  • the lighting device may be supplied with AC voltage and four blocking diodes may be included in a typical rectifying pattern to convert the AC to DC giving the LEDs DC power, the voltage being dealt with by the number of LED's placed in series on the circuit eliminating the need for of a transformer with governing resistance, a fuse may be added on the neutral lead before the rectifying circuit to protect the lighting device from power spikes and a thermoelectric chiller may be placed in the circuit after the four blocking diodes configured as diodes in a typical rectifying pattern.
  • the lighting device may be supplied with AC voltage and four blocking diodes may be included in a typical rectifying pattern to convert the AC to DC giving the LEDs DC power, the voltage being dealt with by the number of LED's placed in series on the circuit eliminating the need for of a transformer with governing resistance, a capacitor may be added between the rectifying circuit and the LEDs to smooth out current ripple and a fuse added on the neutral lead before the rectifying circuit to protect the lighting device from power spikes.
  • the lighting device may be supplied with AC voltage and four blocking diodes may be included in a
  • the lighting device may be supplied with AC voltage and four foam diodes may be included in a typical rectifying pattern to convert the AC to DC giving the LEDs DC power and the voltage is stepped up or down by use of a transformer with governing resistance.
  • the lighting device may be supplied with AC voltage and four foam diodes may be included in a typical rectifying pattern to convert the AC to DC giving the LEDs DC power and the voltage is stepped up or down by use of a transformer with governing resistance and a thermoelectric chiller may be placed in the circuit after the four foam diodes configured as diodes in a typical rectifying pattern.
  • the lighting device may be supplied with AC voltage and four foam diodes may be included in a typical rectifying pattern to convert the AC to DC giving the LEDs DC power and the voltage is dealt with by the number of LED's placed in series on the circuit eliminating the need for of a transformer with governing resistance.
  • the lighting device may be supplied with AC voltage and four foam diodes may be included in a typical rectifying pattern to convert the AC to DC giving the LEDs DC power and the voltage is dealt with by the number of LED's placed in series on the circuit eliminating the need for of a transformer with governing resistance and a thermoelectric chiller may be placed in the circuit after the four foam diodes configured as diodes in a typical rectifying pattern.
  • the lighting device may be supplied with AC voltage and four foam diodes may be included in a typical rectifying pattern to convert the AC to DC giving the LEDs DC power, the voltage being dealt with by the number of LED's placed in series on the circuit eliminating the need for of a transformer with governing resistance and a capacitor may be added between the rectifying circuit and the LEDs to smooth out current ripple.
  • the lighting device may be supplied with AC voltage and four foam diodes may be included in a typical rectifying pattern to convert the AC to DC giving the LEDs DC power, the voltage being dealt with by the number of LED's placed in series on the circuit eliminating the need for of a transformer with governing resistance, a capacitor may be added between the rectifying circuit and the LEDs to smooth out current ripple and a thermoelectric chiller may be placed in the circuit after the four foam diodes configured as diodes in a typical rectifying pattern.
  • the lighting device may be supplied with AC voltage and four foam diodes may be included in a typical rectifying pattern to convert the AC to DC giving the LEDs DC power, the voltage being dealt with by the number of LED's placed in series on the circuit eliminating the need for of a transformer with governing resistance and a fuse may be added on the neutral lead before the rectifying circuit to protect the lighting device from power spikes.
  • the lighting device may be supplied with AC voltage and four foam diodes may be included in a typical rectifying pattern to convert the AC to DC giving the LEDs DC power, the voltage being dealt with by the number of LED's placed in series on the circuit eliminating the need for of a transformer with governing resistance, a fuse may be added on the neutral lead before the rectifying circuit to protect the lighting device from power spikes and a thermoelectric chiller may be placed in the circuit after the four foam diodes configured as diodes in a typical rectifying pattern.
  • the lighting device may be supplied with AC voltage and four foam diodes may be included in a typical rectifying pattern to convert the AC to DC giving the LEDs DC power, the voltage being dealt with by the number of LED's placed in series on the circuit eliminating the need for of a transformer with governing resistance, a capacitor added between the rectifying circuit and the LEDs to smooth out current ripple and a fuse may be added on the neutral lead before the rectifying circuit to protect the lighting device from power spikes.
  • the lighting device may be supplied with AC voltage and four foam diodes may be included in a typical rectifying pattern to convert the AC to DC giving the LEDs DC power, the voltage being dealt with by the number of LED's placed in series on the circuit eliminating the need for of a transformer with governing resistance, a capacitor added between the
  • EET RULE 26 rectifying circuit and the LEDs to smooth out current ripple
  • a fuse may be added on the neutral lead before the rectifying circuit to protect the lighting device from power spikes and a thermoelectric chiller may be placed in the circuit after the four foam diodes configured as diodes in a typical rectifying pattern.
  • a lighting circuit, or part of a lighting circuit, with multiple lighting devices may share the voltage transformer and AC to DC conversion thereby reducing the cost and complexity of the lighting device and also sharing a single conversion loss over multiple lighting devices.
  • the LEDs may be configured in a three dimensional pattern to emit light in an omnidirectional pattern separated by their relative angle in space so as not to emit light on one another.
  • the LEDs may be configured in a three dimensional pattern inside a diffuser bulb housing to emit light in an omnidirectional pattern separated by their relative angle in space so as not to emit light on one another.
  • the LEDs may be configured in a three dimensional pattern on the outside of a bulb housing to emit light in an
  • the LEDs may be configured in a three dimensional pattern on the inside of a bulb housing with openings in the bulb housing for the LED lenses to emit light in an omnidirectional pattern separated by their relative angle in space so as not to emit light on one another and not take secondary diffusion loss, reduce secondary diffusion loss, or substantially not take secondary diffusion loss.
  • the LEDs may be configured in a three dimensional pattern manufactured within the bulb housing with openings in the bulb housing for the LED lenses to emit light in an omnidirectional pattern separated by their relative angle in space so as not to emit light on one-another and not take secondary diffusion loss, reduce secondary diffusion loss, or substantially not take secondary diffusion loss.
  • the LED lighting device may comprise multiple panels that can be arranged in a particular manner to geometrically shape the output light in a desired manner.
  • the LED device may comprise three panels that are configured such that two of the panels move relative to the third panel.
  • the LED lighting device may have 4, 5, 6, 7, 8, 9, or 10 panels.
  • the panels may comprise one or a plurality of LEDs, such as 6, 8, 10, 12, 14, 16, 18, or 20 LEDs.
  • the panels may be rectangular, or circular, or square, or triangular.
  • the LED lighting device may be configured to allow the light to be shaped using current shaping.
  • the current shaping may be accomplished by sizing the width of the various wires and/or traces within the LED circuit. Wires and/or traces may be reduced in size to increase resistance and/or increased in size to increase resistance.
  • the light might be current shaped such that the center LEDS are brighter than the outer LEDs.
  • the light may be current shaped such that the bottom lights are brighter than the top lights.
  • the light may be current shaped such that the outer lights are brighter than the center lights.
  • the light may be current shaped such that the top lights are brighter than the bottom lights.
  • the amount of light provided to a working surface may be improved by using one (or a combination of) geometric shaping and/or current shaping.
  • the amount of light on the working surface may be improved by at least 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, or 100%.
  • the lighting device may have multiple Color Rendering Indexes ("CRI") by having multiple circuits of LEDs with different CRIs that may be controlled by a physical switch.
  • CRI Color Rendering Indexes
  • the lighting device may have multiple CRI's by having multiple circuits of LEDs with different CRI's that may be controlled by a resident memory switch chip.
  • the lighting device may have multiple C I's by having multiple circuits of LEDs with different CRI's that may be controlled by a Digital Multiplex interface (“DMX-512") control system.
  • DMX-512 Digital Multiplex interface
  • the lighting device may have multiple Correlated Color Temperatures ("CCT") by having multiple circuits of LEDs with different CCT's that may be controlled by a physical switch.
  • CCT Correlated Color Temperatures
  • the lighting device may have multiple CCT's by having multiple circuits of LEDs with different CCT's that may be controlled by a resident memory switch chip.
  • the lighting device may have multiple CCT's by having multiple circuits of LEDs with different CCT's that may be controlled by a Digital Multiplex interface (“DMX-512") control system.
  • DMX-512 Digital Multiplex interface
  • the lighting device may have multiple color LEDs (e.g. , red, green and blue), wherein one or more have different output of emitted light for the fixed generation of "white” light.
  • multiple color LEDs e.g. , red, green and blue
  • the lighting device may have one color or multiple color LEDs (e.g., red, green and blue), wherein one or more have different output of emitted light for the fixed generation of various colors of light.
  • one color or multiple color LEDs e.g., red, green and blue
  • the lighting device may have one color or multiple color LEDs (e.g., red, green and blue), wherein one or more have different output of emitted light for the adjustable generation of various colors of light that may be controlled by a Digital Multiplex interface (“DMX-512”) control system.
  • DMX-512 Digital Multiplex interface
  • the lighting device may have multiple color LEDs (e.g., red, green, blue, ultra violet and near infrared), wherein one or more have different output of emitted light to match (or substantially match) the ideal light spectrum for photosynthesis for the growth of plant life.
  • multiple color LEDs e.g., red, green, blue, ultra violet and near infrared
  • FIG. 1 is a schematic diagram of an exemplary LED lighting device
  • FIG. 2 is a schematic diagram of an exemplary LED lighting device
  • FIG. 3 is a schematic diagram of an exemplary LED lighting device
  • FIG. 4 is a schematic diagram of an exemplary LED lighting device
  • FIG. 5 is a schematic diagram of an exemplary transformer assembly for use in an LED lighting assembly
  • FIG. 6 is a schematic diagram of an exemplary AC LED assembly
  • FIG. 7 is a schematic diagram of an exemplary LED mounting structure for use in an LED lighting assembly where a thermal path is made using substantially solid vias;
  • FIG. 8 is a schematic diagram of an exemplary active heat management system for use in an LED lighting assembly
  • FIG. 9 is a schematic diagram of an exemplary DC circuit for use in an LED lighting assembly for harvesting thermal energy from four local heat sources, converting the thermal energy to electrical energy using thermoelectric generators (in series), to power a thermoelectric chiller;
  • FIG. 10 is a schematic diagram of an exemplary DC circuit for harvesting thermal energy from one local heat source in an LED lighting assembly and converting the thermal energy to electrical energy using a thermoelectric generator to power a thermoelectric chiller;
  • FIG. 1 1 is a schematic diagram of an exemplary DC circuit for harvesting thermal energy from two local heat sources in an LED lighting assembly and converting the thermal energy to electrical energy using two thermoelectric generators, in parallel, to power a thermoelectric chiller;
  • FIG. 12 is a schematic diagram of an exemplary DC circuit for harvesting thermal energy from two local heat sources in an LED lighting assembly and converting the thermal energy to electrical energy using two thermoelectric generators, in series, to power a thermoelectric chiller;
  • FIG. 13 is a schematic diagram of an exemplary DC circuit for harvesting thermal energy from one local heat source in an LED lighting assembly and converting the thermal energy to electrical energy using a thermoelectric generator to power another local device, (e.g., a camera, a timer or a sensor, etc.);
  • a thermoelectric generator to power another local device, (e.g., a camera, a timer or a sensor, etc.);
  • FIG. 14 is a schematic diagram of an exemplary DC circuit for harvesting thermal energy from two local heat sources in an LED lighting assembly and converting the thermal energy to electrical energy using two thermoelectric generators, in parallel, to power another local device, (e.g., a camera, a timer or a sensor, etc.);
  • another local device e.g., a camera, a timer or a sensor, etc.
  • FIG. 15 is a schematic diagram of an exemplary DC circuit for harvesting thermal energy from two local heat sources in an LED lighting assembly and converting the thermal energy to electrical energy using two thermoelectric generators, in series, to power another local device, (e.g., a camera, a timer or a sensor, etc.;
  • another local device e.g., a camera, a timer or a sensor, etc.
  • FIG. 16 is a schematic diagram of an exemplary embodiment of an electromagnetic and thermal energy harvesting power supply for use in, e.g., an LED lighting assembly;
  • FIG. 17 is a schematic diagram of an exemplary embodiment of cross- section A of the exemplary power supply of FIG. 16 for use in an LED lighting assembly;
  • FIG. 18 is a schematic diagram of an exemplary embodiment of cross- section B of the exemplary power supply of FIG. 16 for use in an LED lighting assembly;
  • FIG. 19 is a schematic diagram of an exemplary embodiment of cross- section C of the exemplary power supply of FIG. 16 for use in an LED lighting assembly;
  • FIG. 20 is a schematic diagram of an exemplary AC LED assembly which uses the first 4 LEDs in the string to rectify the AC power without requiring the use of additional components;
  • FIG. 21 is a schematic diagram of an exemplary embodiment of an LED lighting assembly
  • FIG. 22 is a schematic diagram of an exemplary embodiment of an LED lighting assembly for use in, e.g., a refrigerator room/case.
  • FIG. 23 is a schematic diagram of an exemplary embodiment of an LED bulb
  • FIG. 24 is an electrical schematic of an exemplary embodiment for an AC powered LED bulb
  • FIG. 25 is another electrical schematic of an exemplary embodiment for an AC powered LED bulb
  • FIG. 26 is another electrical schematic of an exemplary embodiment for an AC powered LED bulb
  • FIG. 27 is another electrical schematic of an exemplary embodiment for an AC powered LED bulb
  • FIG. 28 is a schematic diagram of an exemplary embodiment of an LED bulb
  • FIG. 29 is an electrical schematic of an exemplary embodiment for an AC powered LED bulb
  • FIG. 30 is a schematic section diagram of a conditioned bridge rectifier used in an exemplary embodiment of an LED lighting assembly
  • FIG. 31 is an electrical schematic of a conditioned bridge rectifier used in an exemplary embodiment of an LED lighting assembly
  • FIG. 32 is an exploded diagram of an exemplary embodiment of an LED lighting assembly
  • FIG. 33 is an isometric view of an exemplary embodiment of an LED lighting assembly
  • FIG. 34 is an exploded and isometric view of another exemplary embodiment of an LED lighting assembly as described in Figure 1 ;
  • FIG. 35 is an exploded and isometric view of another exemplary embodiment of an LED lighting assembly as described in Figure 2;
  • FIG. 36 is a section and isometric view of a parabolic reflector to be used for architectural building illumination
  • FIG. 37 is a plan view of a parabolic reflector to be used for architectural building illumination
  • FIG. 38 is a graph that plots the Forward Current verse the relative luminous flux from NS6W183AT;
  • FIG. 39 is a graph that plots the Forward Current verse the relative luminous flux from NS6W183AT;
  • FIG. 40 is a graph that plots Forward Voltage verse Forward Current from NS6W183AT;
  • FIG. 41 is a graph that plots duty ration verse allowable Forward Current from the NS6183AT;
  • FIG. 42 is schematic diagram of an exemplary embodiment of an LED lighting assembly
  • FIG. 43 is an electrical schematic of the exemplary embodiment of the LED lighting assembly illustrated in FIG. 42;
  • FIG. 44 is an exemplary embodiment of a directivity and distribution chart produced by LED and LED lens / reflector manufacturer
  • FIG. 45 is an exemplary embodiment of a schematic diagram depicting the illumination pattern of an LED lensed light source with a mounting height of five meters;
  • FIG. 46 is an exemplary embodiment of a schematic diagram depicting the use of separate reflectors in combination with separate LED lenses
  • FIG. 47 is an exemplary embodiment of a schematic diagram of LED lens and/or reflector spacing
  • FIG. 48 is an exemplary embodiment of a schematic diagram of the light source in FIG. 45 set an angle other than parallel to the target area;
  • FIG. 49 is an exemplary embodiment of a schematic diagram of a luminaire for use in roadway and/or flood lighting
  • FIG. 50 is an exemplary embodiment of a schematic diagram of LED array circuit boards configured to allow different intensities of luminous flux output of different LEDs within the same array to be achieved without the aid of an LED driver;
  • FIG. 51 is an exemplary embodiment of a schematic diagram of an LED array driver to allow larger different intensities of luminous flux output of different LEDs within the same array than those described in FIG. 50;
  • FIG. 52 is another exemplary embodiment of a schematic diagram of an LED array driver to allow larger different intensities of luminous flux output of different LEDs within the same array than those described in FIG. 50.
  • Exemplary embodiments described in the disclosure relate to efficient LED light generation and delivery. Certain embodiments disclosed herein may be beneficial for environmental and/or economic reasons. In certain embodiments, the systems, methods and devices for LED lighting disclosed herein may require an amount of power that renders it feasible for building LED lighting systems to be completely or partially off-grid power. In certain embodiments, due to the low current and the active cooling methods disclosed herein, the life cycle of the systems, methods and devices for LED lighting may exceed 25,000, 50,000, 100,000,
  • the systems, methods and devices for LED lighting disclosed herein may reduce the cost of agriculture by providing economical hydroponic and/or aeroponic urban indoor farming due at least in part to the ability of producing a variety of spectrums of light with a reduced heat and/or power consumption as compared to conventional agricultural grow light systems.
  • the cost of cooling in buildings may be decreased due to the little, reduced, or minimal heat output of the certain
  • the systems, methods and devices for LED lighting may provide possible roadway lighting to be, partially, substantially, or entirely off the power grid and/or powered instead by solar power, reducing the cost of energy, the cost of infrastructure and/or maintenance or combinations thereof related to roadway lighting.
  • the systems, methods and devices for LED lighting may provide for reduced power needs and/or longer life- cycles to electronics such as LED billboards, televisions, displays, laptop and desktop computers, tablet computers, cellphones and/or handheld devices.
  • Certain embodiments may provide secondary electrical power for subsystems here before not possible without additional power supplies. Certain embodiments may provide additional cooling to electronic systems, which may enhance performance and/or extend lifespan. Certain embodiments disclosed herein provide methods to eliminate, or reduce, the need for circuit boards in electrical systems which may reduce manufacturing cost for lighting and/or other types of electronics.
  • the systems, methods and devices for LED lighting disclosed herein may reduce the amount of photons needed, and thus require less power, to be generated because a substantial portion, or a portion, of the photons emitted from the LED device makes it to the desired working surface.
  • the systems, methods and devices for LED lighting disclosed herein may use AC and/or DC power. However, in certain applications, DC power may be the preferred and/or more efficient choice.
  • the systems, methods and devices for LED lighting disclosed herein permit a typical 100 Watt incandescent bulb replacement with a light output of 1 ,600 lumens, and a lifespan of 750 hours to be replaced by an LED bulb with a light output of 1 ,600 lumens and a lifespan of in excess of 60,000, 100,000, 400,000, 800,000 or a million hours which uses approximately 8 Watts.
  • this LED bulb may be manufactured for at least 20%, 30%, 40%, 50%, 65%, or 75% less costs than conventional LED bulbs on the market.
  • the systems, methods and devices for LED lighting disclosed herein permit disclosure a typical 60 Watt incandescent bulb replacement with a light output of 910 lumens and a lifespan of 1000 hours to be replaced by an LED bulb with a light output of 9 0 lumens and a lifespan of in excess of 60,000, 00,000, 400,000, 800,000 or a million hours which uses approximately 5.4 Watts.
  • this LED bulb may be manufactured for at least 20%, 30%, 40%, 50%, 65%, or 75% less cost than conventional LED bulbs . on the market.
  • the systems, methods and devices for LED lighting disclosed herein permit a typical 40 Watt incandescent bulb replacement with a light output of 600 lumens and a lifespan of 1 ,200 hours to be replaced by an LED bulb with a light output of 600 lumens and a lifespan of in excess of 60,000, 100,000, 400,000, 800,000 or a million hours which uses approximately 3,5 Watts.
  • this LED bulb may be manufactured for at least 20%, 30%, 40%, 50%, 65%, or 75% less costs than conventional LED bulbs on the market.
  • the systems, methods and devices for LED lighting disclosed herein permit a H.I.D. lamp and ballast consuming 1 ,250 Watts with a system lifespan of three to five years to be replaced by an LED system with equivalent light output at the working surface and a lifespan of in excess of 60,000, 100,000, 400,000, 800,000 or a million hours which uses less than 10 Watts.
  • this LED system may be priced for a return of investment of under one year
  • the systems, methods and devices for LED lighting disclosed herein permit a parking lot and parking structure lamps and ballast consuming 1 ,250 Watts with a system lifespan of three to five years to be replaced by an LED system with equivalent light output at the working surface and a lifespan of millions of hours may use less than 10 Watts and may be priced for a return of investment of under one year.
  • the systems, methods and devices for LED lighting disclosed herein permit a parking lot and parking structure lamps and ballast consuming 650 Watts with a system lifespan of three to five years to be replaced by an LED system with equivalent light output at the working surface and a lifespan of in excess of 60,000, 100,000, 400,000, 800,000 or a million hours which uses less than 5 Watts.
  • the LED system may be priced for a return of investment of under one year.
  • the systems, methods and devices for LED lighting disclosed herein permit a parking lot and parking structure lamps and ballast consuming 350 Watts with a system lifespan of three to five years to be replaced by an LED system with equivalent light output at the working surface and a lifespan of in excess of 60,000, 100,000, 400,000, 800,000 or a million hours which uses less than 3 Watts.
  • this LED system may be priced for a return of investment of under one year.
  • the systems, methods and devices for LED lighting disclosed herein permit an outdoor architectural building illumination lamps
  • this LED system may be priced for a return of investment of under one year.
  • the systems, methods and devices for LED lighting disclosed herein permit a halogen work lights consuming 500 Watts with a lamp lifespan of 1 ,000 hours to be replaced by an LED system with equivalent light output at the working surface and a lifespan of in excess of 60,000, 100,000, 400,000, 800,000 or a million hours millions of hours may use less than 12 Watts if powered by AC or 8 Watts if powered by DC.
  • Certain embodiments are directed to systems, methods and/or devices for LED lighting wherein the life cycle of the LED lighting is in excess of 30,000, 50,000, 100,000, 250,000, 500,000, 750,000, or 1 million hours of use.
  • Certain embodiments are directed to systems, methods and/or devices for LED lighting wherein the life cycle of the LED lighting is between 50,000 to 100,000, 100,000 to 250,000, 150,000 to 300,000, or 500,000 to 750,000 hours of use.
  • Certain embodiments are directed to systems, methods and/or devices for LED lighting wherein the life cycle of the LED lighting is in excess of 5, 10, 15, 20, 30, 50, or 100 years of use.
  • Certain embodiments are directed to systems, methods and/or devices for LED lighting wherein disclosed herein permit.
  • FIG. 1 is a schematic diagram of an exemplary LED lighting device.
  • an individual optic device 1 is used for each LED (or a plurality of LEDs) in the exemplary fixture.
  • An optic separator 2 may be set at the edge of the LED lens 3 and may be a part of or be separate from the optic device 1. This arrangement may help to ensure that substantially less, little to no stray light from the other LEDs or elsewhere cause a reflection across the protected LED thus changing its refractive index or otherwise causing an unwanted photovoltaic effect on the semiconductor at the base of the LED lens 3.
  • the LED lens 3 may be seated in an LED die 4.
  • the LED anode 5 and LED cathode 6 may be connected to the fixture circuit layer 7 using electrically and thermally conductive epoxy 8 that may cure at a temperature below 70°C, to avoid high temperatures (e.g., >260°C ) typically used by the electronics industry in reflow ovens.
  • high temperatures e.g., >260°C
  • the oven temperatures may be more than those considered safe for LEDs. Exposure to these high temperatures
  • SUBSTITUTE SHEET RULE 26 causes loss in the LEDs' lifetime.
  • limiting the exposure of the LEDs to temperatures below 70°C e.g., below 100°C, below 90°C, below 80°C, below 75°C, below 70°C, below 65°C, below 60°C, below 50°C, etc. may extend the duty cycle of the LEDs.
  • the circuit layer 7 may be a
  • this may be accomplished by way of printing, etching and/or fastening, that eliminates the use of circuit boards.
  • the elimination of the circuit board may achieve one or more benefits, including but not limited to; firstly, it may allow for a direct (or substantially direct) path of component thermal waste energy away from the component eliminating (or reducing) the common heat buildup into the circuit board's dielectric layer that has negative effects on the components and/or secondly, it may make possible the use of a printed, etched and/or fastened trace to the substrate as a resistor eliminating (or reducing) circuit components.
  • the LED circuit begins and ends with LED power supply connectors 1 1 and in exemplary embodiment no driver board may be required as the circuit layer 7 may be engineered to include the LED component specific current and voltage resistance and/or impedance in the case of alternating current.
  • the thermoelectric device substrate (cold side) 12 of the thermoelectric device 10 is fastened, using known methods practiced for thermoelectric devices, to a thermally conductive substrate 13.
  • the thermally conductive substrate 13 may include thermally conductive vertical path walls 14 that attach to the optic separator 2 to chill the ambient temperature of the LEDs and may also be part of the containment structure for low temperature phase change material storage 15.
  • thermoelectric device 10 In operation, when electrical energy is connected to the circuit layer 7 by way of the LED power supply connectors 1 1 , the connected LEDs emit light as intended but also produce waste heat through the LED anode 5 and LED cathode 6. The waste heat is drawn away through the thermoelectric device 10 towards the low temperature phase change material storage 15 in a calculable and/or definable high temperature flow direction 17.
  • the design temperature of the low temperature phase change material storage 15, the heat rejection flow direction 16, the thermal energy produced by the LEDs, and/or the thermal resistivity of the thermoelectric device 10 determines at least in part the amount of wasted heat energy converted back into electrical energy. Parts of the low temperature phase change material storage 15
  • -22- TUTE SHEET RULE 26 that are not desired to be thermally conductive may be constructed using a thermal insulating barrier 18 to aid in maintaining the temperature of the low temperature phase change material storage 15.
  • thermoelectric device 10 Another source of heat to create a high temperature flow direction 17 through the thermoelectric device 10 towards the low temperature phase change material storage 15 and generate electrical energy is the fixture's outer housing 19, especially in outdoor fixtures during daytime hours as long as there is a thermally conductive link 25 to the low temperature phase change material storage 15.
  • the electricity generated by the processes described herein moves as a direct current flow 20 from the positive leads 21 of the thermoelectric device 10 through protection diodes 23 (designed to confine the flow in one direction) and onto the positive lead 21 of the thermoelectric chiller 24 which continually chills the low temperature phase change material storage 15 and out the negative lead 22 through protection diodes 23 and onto the negative lead 22 of the thermoelectric device 10, completing the circuit.
  • this electrical circuit may be substantially separated or completely separate from the circuit powering the LEDs.
  • the power supply for the LED circuit may be done without secondary circuits because of the current and voltage regulating circuit layer 7.
  • DC power which in exemplary embodiments may be desirable, the selection of the proper DC power source voltage and amperage per the LED manufacture's specifications may be sufficient to what is required.
  • AC power exemplary embodiments may employ the use of a transformer that converts the incoming voltage and amperage to the desired power source voltage and amperage of the LEDs per the LED manufacture's specifications.
  • the LED circuit may have equal LEDs set on the circuit layer 7 in reverse polarity and set in close proximity to its opposite LED, so as to use both sides of the electrical wave pattern.
  • the use of resistors on both leads of the high voltage portion of the transformer may be suggested to maintain a longer transformer life.
  • a method of eliminating the transformer may be to use a large number of LEDs in series to match the high voltage in buildings and use the first four LEDs to act as blocking diodes in a rectifying circuit configuration. Two of the four LEDs would alternate and the rest of the LEDs would get a direct current.
  • the alternating pairs may be close to one another or cover the same area at the working surface the LED lighting is intended for.
  • the LED components prior to being used in a lighting system may have an efficacy of 150 Im/w at 2.86V and 350mA with a 25°C Ambient and Solder Junction Temperature and a Lifecycle of 100,000 hours ?(lifecycle may be to 70% efficiency) as may be specified by LED manufacturers.
  • Typical industry fixtures may have one or more of the following features:
  • a driver board designed for 3V and 500mA power mismatch and current overdrive: -30 Im/w - Lifecycle loss 5%;
  • Driver board loss (A/C to D/C and rectifying-smoothing): -40 Im/w - Lifecycle loss 0%;
  • the light may be mounted on PCB using reflow oven (heat damage to LED integrated optics): -2 Im/w - Lifecycle loss 18%;
  • the thermal design of the fixture may not remove/reduce solder junction heat: - 5 Im/w - Lifecycle loss 10%;
  • typical lighting solutions may have one or more of the following limitations:
  • the LED Efficacy may drop from 150 Im/w to 56 Im/w;
  • the LED Lifecycle may drop from 00,000 hours to 25,000 hours (manufactures generally do not give more than a 5 year warranty);
  • driver board may fail sooner
  • ⁇ Driver board may cause more heat due to more
  • Heat transfer methods may not work in fixture housings like ceiling cans
  • Certain embodiments disclosed herein provide lighting devices that use multiplies of LEDs per lighting device as compared with a typical LED lighting device.
  • the disclosed lighting device may use a multiply of 2, 3, 4, 5, 6, 7, 8, 10, 12, 16, 20, 30, 50, 60, 70, or 100.
  • the disclosed lighting device may use a multiply of 2, 3, 4, 5, 6, 7, 8, 10, 12, 16, 20, 30, 50, 60, 70, or 100 and drawing 1/32, 1/20, 1/16, 1/10, 1/8, 1/4 or 1/2 of the current, with the voltage matched (or substantially match) to the recommended current of the LED per the manufacturer's specifications.
  • this may result in one or more of the following: reducing the amount of heat generated by the fixture, increasing the efficacy (lumens per Watt of power used) of each LED (or the plurality of LEDs) and the lighting device, and lengthening the life span of the LEDs and the lighting device.
  • the amount of heat generated may be reduce by 10%, 20%, 35%, 50%, 65%, 70%, 85%, 90%, or 95%.
  • the lighting device are configured such that the efficacy of the plurality of LEDs is at least 5%, 10%, 15%, 20%, 25%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95% or 99% greater than the efficacy of an individual LED.
  • the lighting device are configured such that the efficacy of the plurality of LEDs is between 5% to 99%, 5% to 40%, 10% to 30%, 20% to 40% 50% to 70%, 60% to 85% or 40% to 90% greater than the efficacy of an individual LED.
  • the lighting device may have a life cycle that exceeds 25,000, 50,000, 100,000, 250,000, 400,000, 600,000, 900,000 or a million hours.
  • embodiments may combine one or more of the features discussed herein.
  • LED chip and/or component manufactures publish specifications for their products that include electrical charts for matching the current with the proper voltage, thermal charts for determining heat vs. light output and lifecycle charts that determine lifespan (or "duty-cycle) based on the previous chart specifications.
  • a typically LED lighting device may often be required to endure a greater amount of heat, produce less light and have a considerably shorter duty- cycle as compared with certain disclosed embodiments.
  • a lighting device according to certain embodiment may use four LEDs using one fourth of the current for each LED. Since the efficacy of each LED increases as you lower the current, the efficacy of the combined four is considerably higher than the single LED running at a higher current.
  • One way to determine an optimal power input for a lighting device according to certain embodiments wherein the desire is to achieve higher efficacies in the lighting device is to determine a power ratio verses relative luminous flux.
  • -25- BSTITUTE SHEET RULE 26 may be done by using the following method. First you begin with chip selection from the binning tables of the LED specification (For example NS6W183AT). Below in Table 2 is set forth such a binning table:
  • Bin B14 is selected because it gives a maximum luminous Flux of 150 lumen based upon 350mA per Table 2 and the Forward Voltage is 3.2V current.
  • a lower Forward Current may be selected from the graph as shown by the X in FIG.39.
  • FIG. 39 shows an X that has a current of 100mA and a relative luminous flux 0.33 or 1501m (49.5 lumens).
  • the duty ration verse allowable Forward Current from the NS6183AT specification shown in FIG. 41. As shown in FIG.
  • the LED lighting may have one or more of the following features:
  • a power source design for about 2.78V and 80mA e.g., substantial power match to LED specifications: +72.57 Im/w (e.g., 20 Im/w , 30 Im/w , 40 Im/w, 50 Im/w, 60 Im/w, 70 Im/w, 75 Im/w, 80 Im/w, 90 Im/w, etc.)
  • Lifecycle gain 600% e.g., 50%, 100%, 200%, 300%, 400%, 500%, 700%, 800%);
  • the LEDs may be mounted on the TEG substrate using conductive paste or electrically conductive ultra violet light cured optical gel: +/- 0 Im/w - Lifecycle loss 0% (e.g., substantially no lifecycle loss);
  • An active thermal design of fixture to remove/reduce ambient heat + 8 Im/w (e.g., 4 Im/w, 5 Im/w, 6, Im/w, 7 Im/w, 9 Im/w, 10 Im/w, 15 Im/w, etc.) - Lifecycle Gain 100% (e.g., 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100%, 1 10%, 120%, 130%, 140%, 150%);
  • An active thermal design of fixture to remove solder junction heat to: + 5 Im/w (e.g., 4 Im/w, 5 Im/w, 6, Im/w, 7 Im/w, 9 Im/w, 10 Im/w, 15 Im/w, etc.) - Lifecycle Gain 100% (e.g. , 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100%, 1 10%, 120%, 130%, 140%, 150%);
  • the harvested thermal energy may be converted back to light: + 6 Im/w (e.g., 4 Im/w, 5 Im/w, 6, Im/w, 7 Im/w, 9 Im/w, 10 Im/w, 15 Im/w, etc.) - Lifecycle Gain 0% (e.g., substantially no lifecycle loss);
  • Minimal optical loss from lens or reflectors -3% Im/w - (e.g., 1 Im/w, 2 Im/w, 3 Im/w, 4 Im/w, 5 Im/w, 6 Im/w, 7 Im/w, etc.) - Lifecycle Loss 0% (e.g., substantially no lifecycle loss).
  • exemplary embodiments may experience one or more of the following improvements:
  • LED Efficacy raised from 150 Im/w to 234.32 Im/w (e.g., an improvement of 25%, 30%, 40%, 50%, 55%, 60%, 70%, 75%, 80%, 90%, 100%, etc.);
  • LED Lifecycle raised from 100,000 hours to 800,000 hours (e.g., 150,000, 200,000, 250,000, 300,000, 350,000, 400,000, 450,000, 500,000, 550,000, 600,000, 650,000, 700,000, 750,000, 800,000, 850,000, 900,000, 1 ,000,000 hours, etc.) or a life cycle extension of e.g., 100%, 200%, 300%, 400%, 500%, 600%, 700%, etc.;
  • Heat transfer methods may work in a number of fixture housings and environments
  • Outdoor fixtures may benefit from harvesting heat from the sun cold thermal energies at night;
  • FIG. 2 is a schematic diagram of an exemplary LED lighting device.
  • the embodiment illustrated in FIG. 2 is similar to the embodiment described above with respect to FIG. 1 except the cold side of the thermoelectric device is in contact with a thermally conductive outer housing 19. This arrangement assumes that the ambient temperature is lower than the temperature of the waste heat so the thermoelectric device produces electrical energy.
  • the ambient temperature is lower than the temperature of the waste heat so the thermoelectric device produces electrical energy.
  • the electrical energy generated could be used for a of a number of purposes (e.g., powering a camera, sensor, alarm, etc., or combinations thereof).
  • FIG. 3 is a schematic diagram of an exemplary LED lighting device.
  • the housing 19 acts in a known manner to dissipate heat from the LEDs.
  • this embodiment may still use the optics described herein.
  • the housing 19 includes "island" pads in the shape of the substrates 13 for better heat isolation.
  • FIG. 4 is a schematic diagram of an exemplary LED lighting device. This embodiment is similar to the embodiment of FIG. 3 except the outer housing 19 includes sintered heat pipes 26 and working fluid 27. The heat pipes 26 and working fluid 27 aid in drawing away the waste heat from the LEDs.
  • FIG. 5 is a schematic diagram of an exemplary transformer assembly for use in an LED lighting assembly.
  • the LED lighting is a schematic diagram of an exemplary transformer assembly for use in an LED lighting assembly.
  • the LED lighting is a schematic diagram of an exemplary transformer assembly for use in an LED lighting assembly.
  • the LED lighting is a schematic diagram of an exemplary transformer assembly for use in an LED lighting assembly.
  • the LED lighting is a schematic diagram of an exemplary transformer assembly for use in an LED lighting assembly.
  • the LED lighting is a schematic diagram of an exemplary transformer assembly for use in an LED lighting assembly.
  • the LED lighting is a schematic diagram of an exemplary transformer assembly for use in an LED lighting assembly.
  • SHEET RULE 26 assembly may utilize a thermally isolated standard step-down power transformer 28 to more precisely match the input voltage and current to the LED manufacture's specifications.
  • the resistors 32 may be sized to limit the power drawn from the transformer 28 so as not to overheat the transformer and reduce its lifespan.
  • the waste thermal energy from the transformer 28 and resistors 32 clamped against a Thermally Conductive Substrate 13 may also be harvested as shown in Fig. 8.
  • FIG. 6 is a schematic diagram of an exemplary AC LED assembly.
  • two sets of LED strings 44 are wired with opposite polarity so that they are powered and produce light in an alternating fashion without the need for an LED driver circuit.
  • FIG. 7 is a schematic diagram of an exemplary LED mounting structure for use in an LED lighting assembly.
  • LEDs 33 with opposite polarity are mounted on a thermally modified printed circuit board ("PCB") 34 in pairs so that a pair produces a steady stream of light.
  • PCB printed circuit board
  • opposing LEDs are spaced at a distance of no more than the diameter of their isolating lens plus an additional distance for ease of manufacture, to prevent or reduce a possible strobe effect.
  • the lighting may be placed at other distances from each other so long as they are aimed at the same, or substantially the same, surface.
  • the thermal pads 35 upon which the LEDs are mounted are "I" shaped, electrically isolated and have 0.25mm solid copper vias 36 spaced as close together as PCB manufacturing will allow to an identical, or substantially similar, thermal pad on the backside of the PCB.
  • This passive thermal technique helps transfer the heat from the LED 33 die solder junction to the back of the PCB 34.
  • LEDs 33 may be attached to the PCB 34 using the reflow method specified by the LED manufacturer and/or preferably an electrical and thermal conductive epoxy to prevent the LEDs 33 from sustaining damage from the reflow oven temperature.
  • FIG. 8 is a schematic diagram of an AC LED lighting assembly with an exemplary active heat management system for use in an LED lighting assembly.
  • the active heat management system draws away the passively transferred waste heat at the backside of the PCB 34 and converts it into electrical energy.
  • the PCB 34 may be mechanically attached to the primary heat-sink plate 13 that is shaped to match the thermal pads 35 of the LEDs 33 so as not to allow heat to dissipate across the backside of the PCB 34.
  • the thermal connection of the pad to plate is enhanced by the use of thermal adhesive.
  • the transformer 28 may be mechanically attached to the
  • the resistors 32 may be mechanically attached to the primary heat-sink plate 13 using a resistor clamp 31 and is also sufficiently isolated from the PCB 34 by dropping it below the isolation wall 18.
  • the thermal connection of the resistors 32 and the resistor clamp 31 to the primary heat- sink plate 3 is enhanced by the use of thermal adhesive.
  • a heat-sink stack of thermally conductive substrate 13 matching the thermal pads 35 of the LEDs 33 may be attached by compression to the primary thermally conductive substrate 13.
  • the thermal connection of the primary thermally conductive substrate 13 to stack is enhanced by the use of thermal adhesive.
  • an isolation wall 18 that houses a thermoelectric device 10 with its "hot side" facing the heat-sink stack 13 may be attached by compression to the heat-sink stack 13.
  • the thermal connection of the stack to the thermoelectric device 10 may be enhanced by the use of thermal adhesive.
  • the thermoelectric device 10 may receive most of the waste heat generated by the LEDs 33, the transformer 28 and the resistors 32, as described herein, and are configured in series, parallel or a mix of both to define the output to the desired configuration of the electrical power ( volts and amps) they generate from the waste heat.
  • These configurations of the thermoelectric devices 10 would be readily understood by a person of ordinary skill in the art. Additional thermoelectric devices may also be stacked behind the thermoelectric device 10 shown to transfer heat in stages to produce additional power and move the heat further from the PCB 34.
  • a phase change material packet ring 15 may be chilled by a thermoelectric chiller 24 that is powered by the reclaimed energy from wasted heat to maximize the cooling.
  • the thermoelectric chiller 24 becomes a thermoelectric chiller when DC power is applied in the appropriate polarity.
  • a blocking diode 23 maintains the chilling effect by not allowing (or reducing the likelihood) the thermoelectric chillers 24 to become thermoelectric heaters.
  • the phase change material packet 15 material may have a target temperature of 20°C. In exemplary embodiments, this secondary DC power source would add substantially less, little or no additional power consumption for the LEDs, as it is powered by
  • FIG. 9 is a schematic diagram of an exemplary DC circuit for use in actively cooling an LED lighting assembly.
  • LED to LED interference The lens used in many LED fixtures cause interference and diminish the lumen output due to interference of the light generated by one LED with the ability of adjacent LEDs to operate at optimal efficiency (“LED to LED interference").
  • LED to LED interference comes in two forms. First, the reflection of light generated by one LED off the lens of another LED causes optical interference, which changes the refractive index of the LED's built in lens. This optical interference diminishes the efficiency of the LED luminary fixture. Second, the absorption of light generated by an LED by adjacent LEDs creates a small photovoltaic effect resulting in a reverse voltage in the circuit interfering with the effectiveness of the power deployed to run the LED.
  • exemplary embodiments may use individual lenses with isolation housings or reflectors to stop, or substantially reduce, the path of light from one LED to another and the negative effects thereof.
  • the lenses or reflectors also may tighten up the beam angle to the desired spread.
  • the desired spread may be determined based on the entire array and not the individual LEDs.
  • an index matched gel may also be utilized at the juncture point of the optical lens and the LED lens to reduce loss caused by refraction at the juncture point.
  • An exemplary optical adhesive is Norland Optical Cement. In general, the adhesive may have various combinations of properties similar to one or more of those detailed below in Table 1 :
  • FIG, 10 is a schematic diagram of an exemplary DC circuit for use in actively cooling an LED lighting assembly.
  • a single thermoelectric generator 10 receives the wasted heat from a source, (e.g., an LED, heat of the sun on the fixture case, etc.) on one side described as the high temperature flow 17 and receives a cooler temperature on its opposite side from a source (e.g., cooler ambient temperature, a low temperature phase change material or a condensation line, etc.) described as a heat rejection flow 16.
  • the circuit generates direct current electrical energy that flows through a blocking diode 23 placed as a protection device to ensure a single direction of electrical flow to a single thermoelectric chiller 24.
  • the thermoelectric chiller 24 receives the electrical energy and pumps away heat from
  • thermoelectric chiller 24 one side causing a heat rejection flow 16 from one side and a high temperature flow 17 on the other.
  • Another blocking diode 23 may be placed after the thermoelectric chiller 24 before closing the circuit back at the thermoelectric generator 10.
  • FIG. 1 1 is a schematic diagram of an exemplary DC circuit for use in actively cooling an LED lighting assembly.
  • multiple thermoelectric generators 10 receive the wasted heat from multiple sources (e.g., an LED, heat of the sun on the fixture case, etc.) on one side described as the high temperature flow 17 and receive cooler temperature on their opposite side from multiple sources (e.g., cooler ambient temperature, a low temperature phase change material or a condensation line, etc.) described as a heat rejection flow 16.
  • sources e.g., an LED, heat of the sun on the fixture case, etc.
  • cooler temperature e.g., cooler ambient temperature, a low temperature phase change material or a condensation line, etc.
  • the circuit generates multiple sources of direct current electrical energy connected together in parallel that flow through a blocking diode 23 placed as a protection device to ensure a single direction of electrical flow to a thermoelectric chiller 24 that receives the electrical energy and pumps away heat from one side causing a heat rejection flow 16 from one side and a high temperature flow 17 on the other.
  • a blocking diode 23 may be placed after the thermoelectric chiller 24 before closing the circuit back at the thermoelectric generators 10.
  • FIG. 12 is a schematic diagram of an exemplary DC circuit for use in actively cooling an LED lighting assembly, where multiple thermoelectric generators 10 receive the wasted heat from multiple sources (e.g., an LED, heat of the sun on the fixture case, etc.) on one side described as the high temperature flow 17 and receive cooler temperature on their opposite side from multiple sources (e.g., cooler ambient temperature, a low temperature phase change material or a condensation line, etc.) described as a heat rejection flow 16.
  • sources e.g., an LED, heat of the sun on the fixture case, etc.
  • cooler temperature e.g., cooler ambient temperature, a low temperature phase change material or a condensation line, etc.
  • the circuit generates multiple sources of direct current electrical energy connected together in series that flow through a blocking diode 23 placed as a protection device to ensure a single direction of electrical flow to a thermoelectric chiller 24 that receives the electrical energy and pumps away heat from one side causing a heat rejection flow 16 from one side and a high temperature flow 17 on the other.
  • a blocking diode 23 may be placed after the thermoelectric chiller 24 before closing the circuit back at the thermoelectric generators 10.
  • FIG. 13 is a schematic diagram of an exemplary DC circuit for use in actively cooling an LED lighting assembly and harvesting that thermal energy and converting it back into electrical energy.
  • a single thermoelectric generator 10 receives the wasted heat the LED or LEDs on one side described as the high temperature flow 17 and receives a cooler temperature on the opposite side from a
  • SUBSTITUTE SHEET RULE 26 source (e.g., cooler ambient temperature, a low temperature phase change material or a condensation line, etc.) described as a heat rejection flow 16.
  • the circuit generates direct current electrical energy that flows through a blocking diode 23 placed as a protection device to ensure a single direction of electrical flow to any type of electrical device capable of using the power provided shown as "work.”
  • Another blocking diode 23 may be placed after the thermoelectric chiller 24 before closing the circuit back at the thermoelectric generator 10.
  • FIG. 14 is a schematic diagram of an exemplary DC circuit for use in actively cooling an LED lighting assembly and/or harvesting that thermal energy and/or converting it back into electrical energy.
  • multiple thermoelectric generators 10 receive the wasted heat from multiple sources (e.g., the LEDs, heat of the sun on the fixture case, etc.) on one side described as the high temperature flow 17 and receive cooler temperature on their opposite side from multiple sources (e.g., cooler ambient temperature, a low temperature phase change material and/or a condensation line, etc.) described as a heat rejection flow 16.
  • sources e.g., the LEDs, heat of the sun on the fixture case, etc.
  • cooler temperature e.g., cooler ambient temperature, a low temperature phase change material and/or a condensation line, etc.
  • the circuit generates multiple sources of direct current electrical energy connected together in parallel that flow through a blocking diode 23 placed as a protection device to ensure a single direction of electrical flow to various types of electrical devices capable of using the power provided shown as "work.”
  • a blocking diode 23 may be placed after the thermoelectric chiller 24 before closing the circuit back at the thermoelectric generator 10.
  • FIG. 15 is a schematic diagram of an exemplary DC circuit for use in actively cooling an LED lighting assembly and/or harvesting that thermal energy and/or converting it back into electrical energy.
  • multiple thermoelectric generators 10 receive the wasted heat from multiple sources (e.g., the LEDs, heat of the sun on the fixture case, etc.) on one side described as the high temperature flow 17 and receive cooler temperature on their opposite side from multiple sources (e.g., cooler ambient temperature, a low temperature phase change material or a condensation line, etc.) described as a heat rejection flow 16.
  • sources e.g., the LEDs, heat of the sun on the fixture case, etc.
  • cooler temperature e.g., cooler ambient temperature, a low temperature phase change material or a condensation line, etc.
  • the circuit generates multiple sources of direct current electrical energy connected together in series that flow through a blocking diode 23 placed as a protection device to ensure a single direction of electrical flow to various types of electrical devices capable of using the power provided shown as "work.”
  • a blocking diode 23 may be placed after the thermoelectric chiller 24 before closing the circuit back at the thermoelectric generator 10.
  • FIG. 16 is a schematic diagram of an exemplary embodiment of an electromagnetic and thermal energy harvesting power supply for use in, e.g., an LED lighting assembly.
  • FIG. 17 is a schematic diagram of an exemplary embodiment of cross-section A of the exemplary power supply of FIG. 16 for use in an LED lighting assembly.
  • FIG. 18 is a schematic diagram of an exemplary embodiment of cross- section B of the exemplary power supply of FIG. 16 for use in an LED lighting assembly.
  • FIG. 19 is a schematic diagram of an exemplary embodiment of cross- section C of the exemplary power supply of FIG. 16 for use in an LED lighting assembly.
  • an electromagnetic and thermal energy harvesting power supply for use in a device of choice (e.g., an LED lighting assembly) is shown.
  • the power supply may be used to power a device so long as the input power requirement of the device matches (or substantially matches) the output power of the described power supply.
  • ambient electromagnetic radiation may be harvested using a series of enameled (or otherwise insulated) wire coil around an electrically conductive shaft (e.g., cylindrical ferrite cores 52) of differing sizes and wraps to match multiple frequencies in order to harvest energy at multiple wavelengths and frequencies where it is then converted to direct current using blocking diodes in a rectifying circuit 53 and used to fill ultra capacitor arrays 41 designed for an output power matching the input of
  • thermoelectric chillers 24 and Nichrome coil heat elements 43 may be implemented without a conductive shaft.
  • the electromagnetic harvesting may be constant, if desired, regardless of whether the device of choice is being operated.
  • the Nichrome coil heat elements 43 are in contact with the thermoelectric device substrate (hot side) 9 of thermoelectric generators 10.
  • the thermoelectric chillers 24 are in contact with low temperature phase change material 5 as shown in FIG. 17, which is a vertical cross section schematic diagram of FIG. 16. and FIG.'s 18 and 19, which are horizontal cross section schematic diagrams of FIG. 16, keeping the thermoelectric device at a calculated constant temperature. Referring to FIG.'s 17, 18 and 19, the
  • thermoelectric device substrate (cold side) 12 of the thermoelectric generators 10 is in contact with the low temperature phase change material 15.
  • the thermoelectric device substrate (hot side) 9 of thermoelectric generators 10 are in contact with the Nichrome coil heat elements 43 which cause a thermal difference between both sides of the thermoelectric generators 10 which converts the thermal energy into a calculable electrical energy that is capable in powering the device of choice.
  • thermoelectric device substrate (hot side) 9 of thermoelectric generators 10 the waste heat from one or more components may be routed to the thermoelectric device substrate (hot side) 9 of thermoelectric generators 10 to provide passive cooling to those components and harvest the thermal energy.
  • ambient temperature and the low temperature phase change material 15 cause a calculable thermal difference between both sides of the thermoelectric generators 10 which converts the thermal energy into a calculable electrical energy that is capable of powering the thermoelectric chillers 24 for the chilling of low temperature phase change material 15.
  • the low temperature phase change material 15 is in contact with the thermoelectric generator's 10 and thermoelectric chiller's 24 low thermoelectric device substrate (cold side) 12.
  • the other areas of the low temperature phase change material 15, are insulated with, e.g., low temperature phase change pellet insulation 39 separated with polypropylene case walls 40.
  • the entire power supply is then sealed in outer material of choice (e.g., fiber glass, plastic or metal).
  • FIG. 20 is a schematic diagram of an exemplary AC LED assembly which uses the first 4 LEDs in the string to rectify the AC signal without requiring the use of additional components.
  • an electrical schematic two separate LED strings 44, of differing color temperatures and color rendering indexes are set in series (positive to negative), in order to add up to the voltage of the input voltage.
  • the input voltage may be 120 Volts in the United States and other countries and may be 220 to 230 volts in European and other countries. To calculate this, the input voltage may be divided by the desired forward voltage of the individual LEDs.
  • a fraction can be rounded down with resistance added using a resistor 32 to make up the fraction or, if the number of LEDs is large enough, rounded up to add an additional LEDs to the LED strings 44.
  • Both LED strings 44 are started with four L.E.D.'s set in a pattern commonly known in the electrical industry as a rectifying circuit 53. This can be done as long as the maximum reverse current specified by the LED manufacturer is not exceeded.
  • a resident memory switch chip 51 is added to allow the control of which of the LED string 44 is active.
  • a resident memory switch chip 51 is a semiconductor switch manufactured by, e.g., Texas Instruments that "remembers” the position of the switch unless a user fast double switches the power switch, in which case the resident memory switch chip 51 changes position and "remembers” it's new position until fast double switched again. In this way a single fixture can have multiple color temperatures and color rendering indexes.
  • FIG. 21 is a schematic diagram of an exemplary embodiment of an LED lighting assembly.
  • a detailed section of a light bulb embodiment of the invention invented to replace the popular but highly inefficient incandescent bulb, with two color temperatures and two color rendering indexes controlled by a resident memory switch chip 51 added after the glass fuse enclosure 50 to one leg of the LED strings 44 allowing the control of which of the LED strings 44 is active.
  • the LED strings 44 are electrically wired according to FIG. 20 to accept A C current without the need of transformers or secondary rectifying circuitry.
  • the individual LEDs of the LED strings 44 are kept clear of negative changes to their lenses refractive index and from negative photovoltaic effects due to the other LEDs in the LED strings 44 shining upon them by the aid of an individual optic separator, - reflector 2, half of which is attached to the LED cathode 6 and the other half, connected to the LED anode 5.
  • the LED strings 44 cathodes 6 and anodes 5 are clipped into holes in a ceramic geodesic substrate and shaft 45 superstructure making contact with a copper foil circuit layer 46 on the ceramic geodesic substrate and shaft's 45 back side.
  • the copper foil circuit layer 46 is electrically attached to enameled connecting wires 47 that electrically attach to the standard bulb screw cap 49 interior with connecting wire contacts 48. Fuse protection is added in a typical bulb industry standard glass fuse enclosure 50. In order to keep the bulb
  • thermoelectric chiller(s) 24 This is achieved by placing an enameled wire coil around cylindrical ferrite core 52 around the enameled connecting wires 47 which will receive a fraction of the electrical power running through the enameled connecting wires 47 when power is on. Both ends of the enameled wire coil around cylindrical ferrite core 52 are connected to a rectifying circuit's 53 AC connectors 44 through an inline resistor 32 on each leg and through or around blocking diodes 23 that changes the electrical flow from AC to DC.
  • thermoelectric chillers 24 are connected to the direct current flow positive lead 21 and the direct current flow negative lead 22 of the rectifying circuit 53 with the "cold" side, when powered, facing into the bulb atmosphere 56 and the "hot” side, when powered embedded in ceramic filler 55.
  • the upper outer shell of the light bulb may be cellulose triacetate diffuser bulb 57 shaped to match the incandescent bulb it is replacing and made in two halves and heat welded together in order to fit around the ceramic geodesic substrate and shaft 45 superstructure and attached to a standard bulb screw cap 49.
  • FIG. 22 is a schematic diagram of an exemplary embodiment of an LED lighting assembly for use in, e.g., a refrigerator room/case.
  • an LED lighting assembly for use in, e.g., a refrigerator room/case.
  • an LED lighting assembly for use in, e.g., a refrigerator room/case.
  • an LED lighting assembly for use in, e.g., a refrigerator room/case.
  • an LED lighting assembly for use in, e.g., a refrigerator room/case.
  • an LED lighting assembly for use in, e.g., a refrigerator room/case.
  • an LED lighting assembly for use in, e.g., a refrigerator room/case.
  • an LED lighting assembly for use in, e.g., a refrigerator room/case.
  • an LED lighting assembly for use in, e.g., a refrigerator room/case.
  • an LED lighting assembly for use in, e.g., a refrigerator room/case.
  • an LED lighting assembly for use in, e
  • SUBSTITUTE SHEET RULE 26 33 is attached to a pair of optic electrically conductive separators - reflectors 2 using electrical and thermally conductive epoxy. One is directly attached to the LED anode 5 the other to the LED cathode 6.
  • the optic separators - reflectors 2 are connected to the power supply, LED anode 5 to the positive lead 21 and LED cathode 6 to the negative lead 22.
  • the waste heat produced by the LED 33 is transferred to the optic separators - reflectors 2, preventing, or substantially reducing, them to be affected by condensation that normally requires a secondary casing to alleviate.
  • FIG. 23 is a schematic diagram of an exemplary embodiment of an LED bulb.
  • the LED string 44 may be electrically wired according to, for example, Figs. 24, 25, 26 or 27, to accept A/C current without the need of transformers and/or secondary rectifying circuitry by using at least two of the needed LEDs 33 required for light output along with at least two additional LEDs 33 to make up a four LED bridge rectifier 53.
  • the individual LEDs 33 of the LED string 44 and each of the four LED bridge rectifier 53 LEDs 33 may be kept clear of negative changes to their lenses refractive index and/or from negative photovoltaic effects due to other LEDs 33 in the LED string 44 shining upon them by their location in and/or embedment into the bulb shell 58.
  • the LED strings 44 cathodes 6 and anodes 5 are wired according to, for example, Figs. 24, 25, 26 or 27, on a flexible circuit, hand- wired manually, wired by automation and/or prewired by a LED manufacturer as a single bulb-shaped die, on the inside of the bulb shell 58.
  • the circuit may be electrically attached to connecting wires 47 that electrically attach to the standard bulb screw cap 49 interior in, for example, the same or similar manner as the current incandescent bulb.
  • at least one thermoelectric chiller 24 may be included to the circuit shown in, for example, Figs.
  • the outer shell of the bulb 58 may be of recycled plastic, new plastic or other moldable material.
  • the material selected may be of limited, acceptably, or not electrically conductive, and/or shaped to match the incandescent bulb it is replacing and attached to a standard bulb screw cap 49. If the individual LEDs 33 of the LED string 44 are not manufactured into the bulb shell 58 they may be connected to the bulb shell 58 with optical adhesive 59 that may be cured with ultraviolet light so as not to diminish the light emission of the LEDs 33 while bonding and sealing the LEDs 33 and bulb shell 58. Additionally, as shown in the electrical schematics of FIG.'s 24 and 25, at least one protective removable fuse 60 may be added to prevent damage in the event of power spikes. Also, as shown in the electrical schematics of FIG.'s 24
  • At least one capacitor 61 may be included in the circuit for current smoothing purposes.
  • FIG. 28 is a schematic diagram of an exemplary embodiment of an LED bulb.
  • the LED string 44 is electrically wired according to, for example, Fig. 29, to accept NO current without the need of transformers by using at least one conditioned bridge rectifier 62 as shown in Fig. 30 and Fig. 31.
  • the individual LEDs 33 of the LED string 44 may be kept clear of negative changes to their lenses refractive index and/or from negative photovoltaic effects due to the other LEDs 33 in the LED string 44 shining upon them by their location in and/or embedment into the bulb shell 58.
  • the LED strings 44 cathodes 6 and anodes 5 are wired, for example, according to Fig.
  • thermoelectric chiller 24 may be included to the circuit shown, for example, in Fig.
  • the outer shell of the bulb 58 may be of recycled plastic, new plastic or other moldable material.
  • the material selected may be of limited, acceptably or not electrically conductive, and/or shaped to match the incandescent bulb it is replacing and attached to a standard bulb screw cap 49.
  • the individual LEDs 33 of the LED string 44 are not manufactured into the bulb shell 58, they may be connected to the bulb shell 58 with optical adhesive 59 that may be cured with ultraviolet light so as not to diminish the light emission of the LEDs 33 while bonding and sealing the LEDs 33 and the bulb shell 58.
  • optical adhesive 59 may be cured with ultraviolet light so as not to diminish the light emission of the LEDs 33 while bonding and sealing the LEDs 33 and the bulb shell 58.
  • FIGs. 30 and 31 schematics of a conditioned bridge rectifier that may be used in an exemplary embodiment of an LED lighting assembly, AC current is bridge rectified into DC current by assembling at least four silicone foam diode donuts 64, 65, 66, and 67 into the usual configuration of a standard bridge rectifying circuit.
  • Diode donut D1 's 64 cathode side shares a contact plate with diode donut D3's 66 cathode side.
  • Diode donut D3's 66 anode side shares a contact plate with diode donut D2's 65 cathode side and diode donut D2's 65 anode side shares a contact plate with diode donut D4's 67 anode side.
  • Diode donut D1 's 64 cathode side shares a contact plate with diode donut D3's 66 cathode side.
  • Diode donut D3's 66 anode side shares a contact plate with diode donut D2's 65 cathode side and diode donut D2's 65 anode side shares a contact plate with diode donut D4's 67 anode side.
  • Diode donut D1 's 64 cathode side shares a contact plate with
  • SUBSTITUTE SHEET RULE 26 D4's 67 cathode side plate is connected to the AC live contact 68 and is also connected, without making electrical contact to other electrically conductive contact plates, to diode donut D1 's 64 anode side plate.
  • An AC neutral contact 69 is connected to the shared contact plate of diode donut D2 65 and diode donut D3 66.
  • a capacitor 61 is inserted in the holes of the diode donuts with its positive lead connected to the shared contact plate between diode donut D1 64 and diode donut D3 66, without making electrical contact to other electrically conductive contact plates, and then continuing out to form a positive lead terminal and with its negative lead connected to the shared contact plate between diode donut D2 65 and diode donut D4 67, without making electrical contact to other electrically conductive contact plates, and then continuing out to form a negative lead terminal.
  • This configuration allows the AC input to be bridge rectified into direct current (DC) first through diode donuts 64, 65, 66, and 67, then conditioned with the capacitor or ultra capacitor 61 prior to the remainder of the electrical circuit of the thermoelectric chiller 24 and the LED string 44.
  • DC direct current
  • a hand built prototype of this configuration was tested to have a lumen output of 910 lumens and consumed 8 Watts of power using Nichia 157A LED components. It is calculated, using a more efficient chip and producing the bulb under proper manufacturing conditions, the power consumption will be further reduced down to 5.4 Watts with a lumen output of 910 lumens with a CCT of 2.700K.
  • FIG. 32 an exploded view diagram of an exemplary embodiment of an LED lighting assembly that may be used, for example, for parking lot lights, work lights and other directional light sources.
  • LEDs 33 are connected to a ceramic circuit plate 70 according to one or more of the electrical schematics shown in FIG.'s 33, 34 or 35 using electrical conductive epoxy that will cure at or below sixty five degrees Celsius and/or electrically conductive optical adhesive that will cure using ultra violet light that may be placed using common pick and place machine and/or other methods.
  • the circuit traces may be designed for the optimal resistance to limit the voltage and/or current to the desired LED 33 levels without the use of, or a reduced use of, other electronic components.
  • the ceramic circuit plate 70 may be attached to a thermally conductive back housing 71 with thermally conductive epoxy resulting in a sufficient heat sink for the LEDs 33.
  • the positive and negative lead wires may be fed through a hole or holes of the back housing 71 for connection to a power source.
  • a Parabolic Cover Plate 72 covers the assembly that may be attached with epoxy, having one parabolic reflector per LED 33, designed for beam spreads from three degrees to ninety degrees from either side of the centerline of light beam (though other ranges of degrees may also be used), in order to isolate, or substantially isolate, each LED 33 (or a plurality of LEDS) from one another to ensure that a
  • -40- UBSTITUTE SHEET RULE 26 reduced amount of, substantially no, or no photometric and/or photovoltaic interference occurs.
  • Optical cement may then be placed at the base of each parabolic reflector (or a plurality of parabolic reflectors) and over the LEDs 33 and cured under ultraviolet light, sealing and waterproofing the LEDs 33 without causing refractive loss, reducing refractive loss or minimizing refractive loss.
  • An end cap 73 may be added to aid in attachment to new or existing fixtures and to enclose electrical connections to a power source.
  • FIG. 33 an isometric view of an exemplary embodiment of the LED lighting assembly described in FIG. 32.
  • Prototypes using the described method was built with the following results: A parking lot fixture prototype to replace parking lot and parking structure lamps and ballast that typically consume 1 ,250 Watts with a system lifespan of three to five years was built and tested, provided equivalent light output at the working surface and based upon the LED current and LED temperature should have a lifespan that exceeds a million hours. The parking lot prototype consumed approximately 12 Watts. A work-light prototype to replace halogen work- lights that consume 500 Watts with a lamp lifespan of 1 ,000 hours was built and tested, provided more light output at the working surface and based upon the LED current and LED temperature should have a lifespan that exceeds a million of hours.
  • the work-light prototype consumed approximately 8 Watts.
  • a roadway light prototype to replace 400 Watt roadway Type I fixtures was built and tested and has been running basically continuously for over 1 1 months produces the required illumination with a significantly improved beam pattern than the typical 400 Watt roadway light fixture and consumes 1.5 Watts of power.
  • FIG. 35 an exploded diagram and isometric view of another exemplary embodiment of an LED lighting assembly as described in Figure 2.
  • a prototype was built to test the amount of thermal energy that could be harvested if there was a significant thermal difference.
  • the prototype successfully powered additional LEDs with harvested heat energy from its LED circuit.
  • it also was able to run a small thermoelectric chiller with harvested heat energy from its LED circuit.
  • FIG. 36 is a section view and isometric view and FIG. 37 is a plan view of FIG. 36 of a parabolic reflector to be used for architectural building illumination.
  • a prototype was built and a side-by-side test was done replacing two - 1 ,500 Watts H.I.D. parabolic architectural building illumination fixtures using 60 Watts of power.
  • FIG. 42 is schematic diagram of an exemplary embodiment of an LED lighting assembly.
  • the LED lighting assembly shown in FIG. 42 includes six columns of six LEDs arranged on three individual panels.
  • each panel includes 12 LEDs.
  • the panels may also be constructed of 8, 10, 14, or 16 LEDs.
  • the three panels are designed in a manner to allow the side panels to rotate outward from the center panel allowing the light output from the three panels to be directed in multiple directions.
  • the assembly may include two panels or more than three panels (e.g., 4, 5, 6, 7, or 8 panels).
  • the three panel assembly may be configured to have at least six vertical settings that allows the installer the ability to direct the beam angle of the fixture to best achieve the desired illumination of a working surface.
  • the adjustments may be utilized whether the fixture is mounted in a vertical or horizontal configuration.
  • the LEDs may be Nichia NS6W183BT-c1 , C2/B13, B14, B15/Rnn LEDs.
  • the LED lighting assembly may include features such as the optics and/or thermoelectric devices discussed with reference to FIG. 1
  • FIG. 43 is an electrical schematic of the exemplary embodiment of the LED lighting assembly illustrated in FIG. 42.
  • the assembly may be constructed in a manner that facilitates shaping of the light output using current shaping.
  • the light output of individual LEDs on a circuit or circuits may be modified to direct light to a particular area and with a desired intensity.
  • it may be desirable to have a higher LED light output in a bottom potion of an LED assembly than at the top.
  • the center panel may be designed to have a higher light output than the side panels.
  • the exemplary LED assembly includes 6 columns of 6 LEDs.
  • the circuit is designed such that the LEDs in the center panel of the circuit is the brightest and the outermost right and left rows are the weakest. Additionally, for this application the bottom of each row may be brighter than the top of each row. To achieve this the columns are laid out such that the innermost four columns are in series and the outermost two columns are in parallel.
  • SUBSTITUTE SHEET RULE 26 Each column has 6 LEDs connected in parallel. In exemplary embodiments, this configuration may maximize (or at least increase) the efficiency of the LED chips used because testing suggested that the best efficiency was obtained with 4 placed in series with any number placed in parallel.
  • the parallel traces of the center two rows may be restricted in thickness (e.g., about 0.009") except for the series jump between them that was oversized (e.g., about 0.09").
  • the anode (positive) side parallel traces of the remaining 4 columns may also be restricted in size (e.g., to about 0.009") and the Cathode (negative) side parallel traces may also be restricted in size (e.g., to about 0.039").
  • the series jumps between the panels may be wires oversized to cause little to no resistance.
  • This exemplary circuit design causes the lower center LEDs to have the least resistance to complete the circuit and the upper outer LEDs to have the most resistance to complete the circuit due to heavier "traffic" of electrons on the restricted traces.
  • the width of the traces and/or wires can be sized to increase or decrease the resistance within a particular portion of the circuit so as to adjust the intensity of particular LEDs within the circuit. For example, in exemplary embodiments, it may be desirable to illuminate the upper LEDs and/or the outer LEDs with more intensity.
  • One of the differentiating attributes of LED technology over other types of illumination technologies is the considerably smaller form factor relative to the light output (luminous flux) and higher efficacy (Im/w or lumen output per watt of electrical energy) per LED.
  • These attributes can be beneficial in luminaire energy efficiency by correctly directing one or more of an LED luminaire's luminous flux and/or a ratio of luminous flux to different sectors of a desired target area from the luminaire. In exemplary embodiments, this may facilitate the generation of luminous flux for the desired application. In practice it may allow for a simple method of determining a luminaire's "functional efficacy" factor as opposed to only the standard efficacy factor of the luminaire system currently used in the industry.
  • LED chips manufactured for the general lighting industry are most LED chips emitting footprint areas range in size in
  • the target areas for the luminaires they are used in may range in size from tens to hundreds of square meters. This size differential, as it is being currently used in luminaire design, does not exploit the full potential of LED technology. A new approach, as described herein may help realize more of the potential of LED technology.
  • Nichia NS6W183AT chip with an emitting area of approximately 13mm2.
  • the chip is utilized in a luminaire utilizing 36 chips having a combined emitting area of approximately 468mm2.
  • a 12-meter wide roadway is to be illuminated by the example luminaire at a mounting height of 9 meters and a 30-meter length target area. This gives a 360m2 illumination target area with an average illuminance requirement of 10 lumens per m2 (10 lux).
  • a luminaire that provided 5,040 lumens of total lumen output also meeting the example's average illuminance requirement of 10 lux, and still consuming the same electrical energy of 27.69 watts (meaning this luminaire has a standard efficacy factor of 182 Im/w), should receive a less than "perfect" functional efficacy factor of 1.4. It is not delivering the lumen output as efficiently as the
  • the functional efficacy of such systems may be less than or about 1.3, 1.25, 1.2, 1.15, 1.1 , 1.09, 1.08, 1.07, 1.06, 1.05, 1.04, 1.03, 1.02, and/or 1.01.
  • Proper LED lens or reflector selection and/or design for achieving more optimum illumination distribution to the desired target may be a desirous step in achieving better functional efficacy. While the unique small form factor of LED light sources provide exceptional possibilities for directing the light output efficiently towards a target the methods used in older technologies for luminaire design must be reexamined.
  • FIG. 44 is a directivity and distribution chart which may be produced by LED and LED lens / reflector manufactures. Most LED and LED lens / reflector manufactures include these types of charts for their products. These charts speak to the products beam angle described in the data sheets and sales specifications relative to 50% of their intensity, which is an industry standard of measurement. As can clearly be seen in the LED Directivity Chart of FIG. 44, 50% of the relative illuminance of the LED being described in the chart (between points 0.5 on the right and 0.5 on the left) is within a beam angle of 120° (between angles 60° on the right and -60° on the left).
  • the relative luminous intensity of the LED lens being described in the chart of FIG 44 is 15° (between points -7.5° on the right and 7.5° on the left) for it's FWHM (Full Width at Half Maximum) illuminance beam. While this information may be useful for defining a product for sales purposes it is somewhat deceptive for luminaire design since there is a substantial amount of light output (50%) at angles greater than those of the 50% data point as indicated by the arrows that have been added to these charts to illustrate this point. To utilize this often overlooked output an understanding of the LED and/or LED lens or reflectors small size relative to the size and position they are placed within a luminaire and the relative distance that luminaire will be from the target to be illuminated should be understood and accounted for.
  • FIG. 45 is a schematic diagram depicting the illumination pattern if a single LED 30° FWHM lensed light source with a mounting height of five meters.
  • SUBSTITUTE SHEET RULE 26 These types of lens generate two well-defined beam distribution patterns; one (a center beam) that distributes approximately 75% of the luminous flux to the target within a specified area and another (a secondary beam) that distributes the remainder.
  • a center beam that distributes approximately 75% of the luminous flux to the target within a specified area
  • a secondary beam that distributes the remainder.
  • the typical solution to this issue is to use diffusers to even out this effect but that comes at a cost of efficiency due to lumen losses resulting from refraction, scattering and absorption.
  • the secondary beam effect is also present in asymmetrical lens. If these types of lenses are used a more efficient method to pull the secondary beam and shape it into the center beam may be to add a parabolic reflector ring or partial ring.
  • FIG. 46 is a schematic diagram depicting the use of separate reflectors in combination with separate LED lens.
  • the reflector opening size may be sized to the center beam angle, and the reflector shape may be parabolic, faceted or angled to direct the secondary beam into the center beam.
  • the reflector opening size may be sized smaller than the center beam angle, and the reflector shape may be parabolic, faceted or angled to direct the secondary beam and as well as a portion of the center beam into the remaining center beam. This method may leave a cleaner pattern as shown in the figure and also allow the luminaire designer cleaner beam shaping options not otherwise feasible with lenses such as those with rectangular, square or octagonal shapes.
  • the LED's own beam angle may be used with the reflector without the need of the LED lens.
  • FIG. 47 is a schematic diagram of LED lens and/or reflector spacing.
  • the spacing of LEDs, LED lenses, and/or reflectors may be considered and determined so as to not shade the beam angle of it's neighboring LED, LED lens and/or reflector. If the lens or reflector of one LED is in any portion of the beam or another, it will likely be trapped within the luminaire and never reach the desired target. In FIG. 47 the lens separation width illustrated prevents the LED lenses from shading one another's secondary beam angle. In exemplary
  • this distance may be determined by calculating the entire beam angle of each lens and the projection of each lens.
  • this method may allow a single reflector to be used to shape the beam angle of multiple lensed or non-lensed LEDs in an array of a luminaire.
  • FIG. 48 is a schematic diagram of the same single LED 30° FWHM lensed light source mounted at the height as described in FIG. 45 but set at an angle other than parallel to the target area. Since LED's are of a relatively small form factor
  • SUBSTITUTE SHEET RULE 26 compared to the size of the target area, use of geometry in a luminaire design can achieve accuracy in light shaping for desired illumination effects. Is illustrated, both the center and secondary beams illuminations are elongated relative to the angle of the source. If reflectors are added as described in FIG. 46 and FIG. 47 the remaining combined beam can be shaped. In exemplary embodiments, this may be a valuable method for applications in which the relative size of the target area is significantly larger than the entire luminaire as is the case of roadway and flood lighting.
  • FIG. 49 is a schematic diagram of a luminaire for use in roadway and flood lighting. As illustrated, three LED modules are configured at angles to direct their output for specific parts of the target area as described in connection with FIG. 48. A benefit of this method may be that it allows for elongated patterns that increase exponentially based on distance to the surface. However, this method may be prone to cause glare and/or some of the beam missing the target area. Accordingly, the luminaire illustrated in FIG. 49 incorporates reflector wings at the outside of each angled face. These reflector wings may be placed inside a portion of the beam angle to reflect and redirect the otherwise lost luminous flux onto the target area.
  • the redirected luminous flux may be designed to reach a specific under illuminated section and/or spread across the entire target to even out any spotting.
  • the wings may also provide a true cut-off of luminous flux from the luminaire, thereby eliminating (or at least reducing) the issue of glare.
  • FIG. 50 is a schematic diagram of an LED array circuit board to allow different intensities of luminous flux output of different LEDs within the same array to be achieved without the aid of an LED driver.
  • the schematic diagram on the right achieves this by reducing the trace size on the cathode side of the circuit. In exemplary embodiments, this may cause added resistance to that LED thereby reducing it's ability to draw it's share of the current of the array.
  • the other LEDs in the circuit receive a proportional share of the current based upon their respective circuit trace widths.
  • Adjusting the amount of luminous flux within an array makes it possible to have more luminous flux emitting from the LED's that have a larger distribution area and less from those in the array that have smaller areas to illuminate.
  • the schematic diagram on the left achieves similar results by the use of resistors added to the cathode side of the circuit causing added resistance to that LED thereby reducing it's ability to draw it's share of the current of the array.
  • the other LEDs in the circuit receive a proportional share of the circuit based upon their
  • FIG. 51 is a schematic diagram of an LED array driver configured to allow larger different intensities of luminous flux output of different LEDs within the same array than those described in FIG. 50.
  • the base driver may be any boost or buck driver that allows for a designable voltage range to multiple constant current circuits that may be configured to provide fixed large current output differences to multiple LED's within the array.
  • the constant current circuit consists of an adjustable voltage regulator, a capacitor and a resistor. The use of any multiple of these circuits, placed in the configuration shown and driven by any boost or buck LED driver allows for different desired output levels with extremely low energy loss to allow for maximizing the advantages described in FIG's 45 thru 50.
  • the LEDs providing illumination in the center of the target area are much closer to their target, and therefore have a smaller distribution pattern requiring less lumen output then those that are providing illumination at the end of the target area.
  • the difference in distance may be much as 30 to 40 meters. Since all beam pattern areas expand in relation to distance, if an equal or near equal distribution is desired across the entire target area, the LEDs or LED arrays with larger areas to illuminate may have an output greater than those with smaller areas to provide an equal (or substantially equal) lumen per square meter result.
  • FIG. 52 is a schematic diagram of a LED array driver configured to allow larger different intensities of luminous flux output of different LEDs within the same array than those described in FIG. 50.
  • the base driver may be any boost or buck driver that allows for a designable voltage range to multiple constant current circuits that may be configured to provide adjustable large current output differences to multiple LEDs within the array.
  • the adjustable constant current circuit may consist of an adjustable voltage regulator, a capacitor, multiple resistors and a switching circuit, such as one consisting of a PWM (Pulse Width Modulation) controller, for remotely controlling the current.
  • PWM Pulse Width Modulation
  • a lighting device comprising: a plurality of LEDs; a plurality of optic devices corresponding to the plurality of LEDs; at least one optical separator for substantially preventing the light emitted from one LED from effecting the other LEDs; a thermoelectric device configured to harvest heat generated by the LEDs and convert the harvested heat into electrical energy; and a low temperature material for creating a temperature difference across the thermoelectric device.
  • the lighting device may comprise at least one optical separator that substantially prevents a change in refractive index of the other lights.
  • the lighting device may comprise at least one optical separator that substantially prevents a photovoltaic effect on the other lights.
  • the lighting device may comprise a low temperature material that is a phase change material.
  • the lighting device may generate electrical energy that is used to aid in maintaining the low temperature material at a low temperature.
  • the lighting device the generated electrical energy is used to aid in powering at least one additional LED.
  • the lighting device may be powered by DC voltage.
  • the DC power may be harvested from the site where the light is needed (e.g., waste thermal energy from a water line or other local process, radio waves, sunlight, etc.),
  • the lighting device may be supplied with AC voltage and a plurality of LEDs may be arranged such that about 50% are in a first polarity and about 50% are in a reverse polarity.
  • the power source may be designed to supply about 2.78V and about 80mA.
  • the power supply may be a substantial power match to the LED specifications.
  • Matching the power supply may benefit the lighting device by increasing the output by +72.57 Im/w (e.g., 20 Im/w , 30 Im/w , 40 Im/w, 50 Im/w, 60 Im/w, 70 Im/w, 75 Im/w, 80 Im/w, 90 Im/w, etc.).
  • +72.57 Im/w e.g., 20 Im/w , 30 Im/w , 40 Im/w, 50 Im/w, 60 Im/w, 70 Im/w, 75 Im/w, 80 Im/w, 90 Im/w, etc.
  • Matching the power supply may result in a lifecycle gain of about 600% (e.g. , 50%, 100%, 200%, 300%, 400%, 500%, 700%, 800%).
  • the LEDs in the lighting device may be mounted on the TEG substrate using conductive paste; +/- 0 Im/w - Lifecycle loss 0% (e.g., substantially no lifecycle loss).
  • An active thermal design of the lighting device to remove/reduce ambient heat may result in an increase in output of about + 8 Im/w (e.g., 4 Im/w, 5 Im/w, 6, Im/w, 7 Im/w, 9 Im/w, 10 Im/w, 15 Im/w, etc.) and/or a lifecycle gain of about 100% (e.g., 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100%, 110%, 120%, 130%, 140%, 150%).
  • Im/w e.g., 4 Im/w, 5 Im/w, 6, Im/w, 7 Im/w, 9 Im/w, 10 Im/w, 15 Im/w, etc.
  • a lifecycle gain e.g. 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100%, 110%, 120%, 130%, 140%, 150%).
  • An active thermal design of the lighting device to remove solder junction heat may result in an increase of output by about +5 Im/w (e.g., 4 Im/w, 5 Im/w, 6, Im/w, 7 Im/w, 9 Im/w, 10 Im/w, 15 Im/w, etc.) and/or a lifecycle gain of about 100% (e.g., 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100%, 110%, 120%, 130%, 140%, 150%).
  • +5 Im/w e.g., 4 Im/w, 5 Im/w, 6, Im/w, 7 Im/w, 9 Im/w, 10 Im/w, 15 Im/w, etc.
  • a lifecycle gain e.g., 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100%, 110%, 120%, 130%, 140%, 150%).
  • the harvested thermal energy may be converted back to light which may result in an effective improvement of about +6 Im/w (e.g., 4 Im/w, 5 Im/w, 6, Im/w, 7 Im/w, 9 Im/w, 10 Im/w, 15 Im/w, etc.) and/or a lifecycle gain of about 0% (e.g., substantially no lifecycle loss).
  • +6 Im/w e.g., 4 Im/w, 5 Im/w, 6, Im/w, 7 Im/w, 9 Im/w, 10 Im/w, 15 Im/w, etc.
  • a lifecycle gain 0% (e.g., substantially no lifecycle loss).
  • the lighting device may have a lens designed to reduce optical loss from the lens or reflectors which may reduce lens/reflector loss to about -3% Im/w - (e.g., 1 Im/w, 2 Im/w, 3 Im/w, 4 Im/w, 5 Im/w, 6 Im/w, 7 Im/w, etc.) and/or a lifecycle loss of about 0% (e.g., substantially no lifecycle loss).
  • a lens designed to reduce optical loss from the lens or reflectors which may reduce lens/reflector loss to about -3% Im/w - (e.g., 1 Im/w, 2 Im/w, 3 Im/w, 4 Im/w, 5 Im/w, 6 Im/w, 7 Im/w, etc.) and/or a lifecycle loss of about 0% (e.g., substantially no lifecycle loss).
  • the lighting device may have an LED Efficacy that is raised from 150 Im/w to 234.32 Im/w (e.g., an improvement of 25%, 30%, 40%, 50%, 55%, 60%, 70%, 75%, 80%, 90%, 100%, etc.).
  • the lighting device may have an LED Lifecycle: raised from 100,000 hours to 800,000 hours (e.g., 150,000, 200,000, 250,000, 300,000, 350,000, 400,000, 450,000, 500,000, 550,000, 600,000, 650,000, 700,000, 750,000, 800,000, 850,000, 900,000, 1 ,000,000 hours, etc.) or a life cycle extension of, e.g., 100%, 200%, 300%, 400%, 500%, 600%, 700%, etc.
  • 100,000 hours to 800,000 hours e.g., 150,000, 200,000, 250,000, 300,000, 350,000, 400,000, 450,000, 500,000, 550,000, 600,000, 650,000, 700,000, 750,000, 800,000, 850,000, 900,000, 1 ,000,000 hours, etc.
  • a life cycle extension e.g., 100%, 200%, 300%, 400%, 500%, 600%, 700%, etc.
  • the lighting device may have fewer components than convention device and may cost less to manufacture.
  • the lighting device may be easier to manufacture and have a smaller
  • the lighting device may have heat transfer methods that work in suitable fixture housings and environments.
  • Outdoor versions of the lighting device may have fixtures that benefit from harvesting heat from the sun cold thermal energies at night.
  • the lighting device may have optic design at the individual LED level that improves the percentage of the lumens that reach the intended working surface
  • the lighting device may be able to harvest more thermal energy to run another type of subsystem (e.g., camera, signal, sensors, etc.).
  • another type of subsystem e.g., camera, signal, sensors, etc.
  • Example 1 A lighting device comprising:
  • At least one optical separator for substantially preventing the light emitted from one LED from effecting the other LEDs
  • thermoelectric device configured to harvest heat generated by the LEDs and convert the harvested heat into electrical energy
  • thermoelectric device a low temperature material for creating a temperature difference across the thermoelectric device.
  • Example 2 The lighting device of example 1 wherein the at least one optical separator substantially prevents a change in refractive index of the other lights.
  • Example 3 The lighting device of one or more of the preceding examples wherein the at least one optical separator substantially prevents a photovoltaic effect on the other lights.
  • Example 4 The lighting device of one or more of the preceding examples wherein the low temperature material is a phase change material.
  • Example 5 The lighting device of one or more of the preceding examples wherein the generated electrical energy is used to aid in maintaining the low temperature material at a low temperature.
  • Example 6 The lighting device of one or more of the preceding examples wherein the generated electrical energy is used to aid in powering at least one additional LED.
  • Example 7 The lighting device of one or more of the preceding examples wherein the lighting device is supplied with DC voltage.
  • Example 8 The lighting device of one or more of the preceding examples wherein the lighting device is supplied with AC voltage and at plurality of LEDs are arranged such that about 50% are in a first polarity and about 50% are in a reverse polarity.
  • Example 9 The lighting device of one or more of the proceeding examples wherein the plurality of LEDs are configured such that the efficacy of the plurality of LEDs is greater than the efficacy of an individual LED.
  • Example 10 The lighting device of one or more of the proceeding examples wherein the plurality of LEDs are configured such that the efficacy of the plurality of LEDs is at least 5%, 10%, 15%, 20%, 25%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95% or 99% greater than the efficacy of an individual LED.
  • Example 1 The lighting device of one or more of the proceeding examples wherein the plurality of LEDs are configured such that the efficacy of the plurality of LEDs is between 5% to 99%, 5% to 40%, 10% to 30%, 20% to 40% 50% to 70%, 60% to 85% or 40% to 90% greater than the efficacy of an individual LED.
  • Example 12 The lighting device of one or more of the proceeding examples wherein the plurality of LEDs are configured such that the lumens per watt of the plurality of LEDs is greater than the lumens per watt of an individual LED.
  • Example 13 The lighting device of one or more of the proceeding examples wherein the plurality of LEDs are configured such that the lumens per watt of the plurality of LEDs is at least 5%, 10%, 15%, 20%, 25%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95% or 99% greater than the lumens per watt of an individual LED.
  • Example 14 The lighting device of one or more of the proceeding examples wherein the plurality of LEDs are configured such that the lumens per watt of the plurality of LEDs is between 5% to 99%, 5% to 40%, 10% to 30%, 20% to 40% 50% to 70%, 60% to 85% or 40% to 90% greater than the lumens per watt of an individual LED.
  • Example 15 A lighting device comprising:
  • a plurality of optic devices corresponding to the plurality of LEDs; and at least one optical separator for substantially preventing the light emitted from one LED from effecting the other LEDs.
  • Example 16 The lighting device of example 15 wherein the at least one optical separator substantially prevents a change in refractive index of the other lights.
  • Example 17 The lighting device of one or more of the preceding examples wherein the at least one optical separator substantially prevents a photovoltaic effect on the other lights.
  • Example 18 The lighting device of one or more of the preceding examples further comprising: a thermoelectric device configured to harvest heat generated by the LEDs and convert the harvested heat into electrical energy; and a low temperature material for creating a temperature difference across the
  • thermoelectric device thermoelectric device
  • Example 19 The lighting device of one or more of the preceding examples wherein the low temperature material is a phase change material.
  • Example 20 The lighting device of one or more of the preceding examples wherein the generated electrical energy is used to aid in maintaining the low temperature material at a low temperature.
  • Example 21 The lighting device of one or more of the preceding examples wherein the generated electrical energy is used to aid in powering at least one additional LED.
  • Example 22 The lighting device of one or more of the preceding examples wherein the lighting device is supplied with DC voltage.
  • Example 23 The lighting device of one or more of the preceding examples wherein the lighting device is supplied with AC voltage and at plurality of LEDs are arranged such that about 50% are in a first polarity and about 50% are in a reverse polarity.
  • Example 24 The lighting device of one or more of the proceeding examples wherein the plurality of LEDs are configured such that the efficacy of the plurality of LEDs is greater than the efficacy of an individual LED.
  • Example 25 The lighting device of one or more of the proceeding examples wherein the plurality of LEDs are configured such that the efficacy of the plurality of LEDs is at least 5%, 10%, 15%, 20%, 25%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95% or 99% greater than the efficacy of an individual LED.
  • Example 26 The lighting device of one or more of the proceeding examples wherein the plurality of LEDs are configured such that the efficacy of the plurality of LEDs is between 5% to 99%, 5% to 40%, 10% to 30%, 20% to 40% 50% to 70%, 60% to 85% or 40% to 90% greater than the efficacy of an individual LED.
  • Example 27 The lighting device of one or more of the proceeding examples wherein the plurality of LEDs are configured such that the lumens per watt of the plurality of LEDs is greater than the lumens per watt of an individual LED.
  • Example 28 The lighting device of one or more of the proceeding examples wherein the plurality of LEDs are configured such that the lumens per watt of the plurality of LEDs is at least 5%, 10%, 15%, 20%, 25%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95% or 99% greater than the lumens per watt of an individual LED.
  • Example 29 The lighting device of one or more of the proceeding examples wherein the plurality of LEDs are configured such that the lumens per watt of the plurality of LEDs is between 5% to 99%, 5% to 40%, 10% to 30%, 20% to 40%
  • Example 30 A lighting device comprising:
  • thermoelectric device configured to harvest heat generated by the LEDs and convert the harvested heat into electrical energy
  • thermoelectric device a low temperature material for creating a temperature difference across the thermoelectric device
  • Example 31 The lighting device of example 30 further comprising: at least one optical separator for substantially preventing the light emitted from one LED from effecting the other LEDs.
  • Example 32 The lighting device of one or more of the proceeding examples wherein the at least one optical separator substantially prevents a change in refractive index of the other lights.
  • Example 33 The lighting device of one or more of the preceding examples wherein the at least one optical separator substantially prevents a photovoltaic effect on the other lights.
  • Example 34 The lighting device of one or more of the preceding examples wherein the low temperature material is a phase change material.
  • Example 35 The lighting device of one or more of the preceding examples wherein the generated electrical energy is used to aid in maintaining the low temperature material at a low temperature.
  • Example 36 The lighting device of one or more of the preceding examples wherein the generated electrical energy is used to aid in powering at least one additional LED.
  • Example 37 The lighting device of one or more of the preceding examples wherein the lighting device is supplied with DC voltage.
  • Example 38 The lighting device of one or more of the preceding examples wherein the lighting device is supplied with AC voltage and at plurality of LEDs are arranged such that about 50% are in a first polarity and about 50% are in a reverse polarity.
  • Example 39 The lighting device of one or more of the proceeding examples wherein the plurality of LEDs are configured such that the efficacy of the plurality of LEDs is greater than the efficacy of an individual LED.
  • Example 40 The lighting device of one or more of the proceeding examples wherein the plurality of LEDs are configured such that the efficacy of the
  • SUBSTITUTE SHEET RULE 26 plurality of LEDs is at least 5%, 10%, 15%, 20%, 25%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95% or 99% greater than the efficacy of an individual LED.
  • Example 41 The lighting device of one or more of the proceeding examples wherein the plurality of LEDs are configured such that the efficacy of the plurality of LEDs is between 5% to 99%, 5% to 40%, 10% to 30%, 20% to 40% 50% to 70%, 60% to 85% or 40% to 90% greater than the efficacy of an individual LED.
  • Example 42 The lighting device of one or more of the proceeding examples wherein the plurality of LEDs are configured such that the lumens per watt of the plurality of LEDs is greater than the lumens per watt of an individual LED.
  • Example 43 The lighting device of one or more of the proceeding examples wherein the plurality of LEDs are configured such that the lumens per watt of the plurality of LEDs is at least 5%, 10%, 15%, 20%, 25%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95% or 99% greater than the lumens per watt of an individual LED.
  • Example 44 The lighting device of one or more of the proceeding examples wherein the plurality of LEDs are configured such that the lumens per watt of the plurality of LEDs is between 5% to 99%, 5% to 40%, 10% to 30%, 20% to 40% 50% to 70%, 60% to 85% or 40% to 90% greater than the lumens per watt of an individual LED.
  • Example 45 A lighting device comprising:
  • the plurality of LEDs are configured such that the efficacy of the plurality of LEDs is greater than the efficacy of an individual LED.
  • Example 46 The lighting device of example 45 further comprising: a plurality of optic devices corresponding to the plurality of LEDs; and at least one optical separator for substantially preventing the light emitted from one LED from effecting the other LEDs.
  • Example 47 The lighting device of examples 45 or 46 further comprising:
  • thermoelectric device configured to harvest heat generated by the LEDs and convert the harvested heat into electrical energy
  • thermoelectric device a low temperature material for creating a temperature difference across the thermoelectric device.
  • Example 48 The lighting device of one or more of the proceeding examples wherein the at least one optical separator substantially prevents a change in refractive index of the other lights.
  • Example 49 The lighting device of one or more of the preceding examples wherein the at least one optical separator substantially prevents a photovoltaic effect on the other lights.
  • Example 50 The lighting device of one or more of the preceding examples wherein the low temperature material is a phase change material.
  • Example 51 The lighting device of one or more of the preceding examples wherein the generated electrical energy is used to aid in maintaining the low temperature material at a low temperature.
  • Example 52 The lighting device of one or more of the preceding examples wherein the generated electrical energy is used to aid in powering at least one additional LED.
  • Example 53 The lighting device of one or more of the preceding examples wherein the lighting device is supplied with DC voltage.
  • Example 54 The lighting device of one or more of the preceding examples wherein the lighting device is supplied with AC voltage and at plurality of LEDs are arranged such that about 50% are in a first polarity and about 50% are in a reverse polarity.
  • Example 55 The lighting device of one or more of the proceeding examples wherein the plurality of LEDs are configured such that the efficacy of the plurality of LEDs is greater than the efficacy of an individual LED.
  • Example 56 The lighting device of one or more of the proceeding examples wherein the plurality of LEDs are configured such that the efficacy of the plurality of LEDs is at least 5%, 10%, 15%, 20%, 25%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95% or 99% greater than the efficacy of an individual LED.
  • Example 57 The lighting device of one or more of the proceeding examples wherein the plurality of LEDs are configured such that the efficacy of the plurality of LEDs is between 5% to 99%, 5% to 40%, 10% to 30%, 20% to 40% 50% to 70%, 60% to 85% or 40% to 90% greater than the efficacy of an individual LED.
  • Example 58 A method for providing lighting that comprises using the lighting device of one or more of the proceeding examples.
  • Example 59 A system for providing lighting that comprises using the lighting device of one or more of the proceeding examples.
  • EET RULE 26 disclosure, however, is not to be interpreted as reflecting an intention that the claimed inventions requires more features than are recited expressly in each claim. Rather, as the following claims reflect, inventive aspects may lie in less than all features of a single foregoing disclosed embodiment.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

Certaines formes de réalisation se réfèrent à un dispositif d'éclairage comprenant un ou plusieurs des éléments suivants : une pluralité de DEL ; une pluralité de dispositifs optiques correspondant à la pluralité des DEL ; au moins un séparateur optique, qui empêche sensiblement la lumière émise par une DEL d'influencer les autres DEL ; un dispositif thermoélectrique, conçu pour recueillir la chaleur émise par les DEL et convertir la chaleur recueillie en énergie électrique ; et une matière à faible température, qui sert à produire une différence de température sur l'ensemble du dispositif thermoélectrique.
PCT/US2014/052652 2013-08-26 2014-08-26 Procédés et dispositifs pour fournir un éclairage par del WO2015031328A1 (fr)

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US20110235328A1 (en) * 2010-03-25 2011-09-29 Jian Xu Energy harvester for led luminaire
WO2012068221A1 (fr) * 2010-11-16 2012-05-24 Daniel Stewart Lang Systèmes, procédés et/ou dispositifs d'éclairage à del

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US20110235328A1 (en) * 2010-03-25 2011-09-29 Jian Xu Energy harvester for led luminaire
WO2012068221A1 (fr) * 2010-11-16 2012-05-24 Daniel Stewart Lang Systèmes, procédés et/ou dispositifs d'éclairage à del
WO2012068218A1 (fr) * 2010-11-16 2012-05-24 Daniel Stewart Lang Systèmes, procédés et/ou appareils pour génération d'énergie thermoélectrique
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