Light emitting diode luminaire device and system with color temperature tunning

Abstract

A lighting device is disclosed that includes one or more master circuit boards configured to power light emitting diodes. The lighting device also includes modular light boards with arrays of light emitting diodes that interchangeably couple to the matched connectors on the master circuit board. The master circuit boards and the modular light boards are positioned within a housing with one or elongated diffuser lenses covering or embedding rows of light emitting diodes on the modular light boards. In accordance with the embodiments of the invention, master circuit boards and modular light boards are mounted in a stacked arrangement to emit light from opposed sides of the housing. In further embodiments of the invention, the lighting device includes a controller for independently controlling light output from each master circuit board.

Claims

1. A lighting device comprising: a) a first master circuit board with connectors configured to power arrays of light emitting diodes; b) a first set of light boards with the arrays of light emitting diodes to the connectors on the first master circuit board, wherein arrays of light emitting diodes include 20 or more light emitting diodes and, wherein the light emitting diodes use 0.2 watts or less of electrical power; and c) elongated curved diffuser lenses covering or embedding rows of the light emitting diodes on the first set of light boards.

2. The lighting device of claim 1, wherein the first master circuit board includes a transformer.

3. The lighting device of claim 1, further comprising a first diffuser lens cover positioned in front of light emitting surfaces of the first set of light boards.

4. The lighting device of claim 1, wherein further comprising a housing for housing the first master circuit board a first set of light boards, wherein the housing includes a hinged access plate for servicing the lighting device.

5. The lighting device of claim 1, further comprising: a) a second master circuit board with connectors configured to power light emitting diodes; and b) a second set of light boards with arrays of light emitting diodes electrically coupled to the connectors on the second master circuit board.

6. The lighting device of claim 5, further comprising a second diffuser lens cover positioned in front of light emitting surfaces of the second set of light boards.

7. The lighting device of claim 1, further comprising a controller for independently controlling light output from the first set of light boards and the second set of modular light boards.

8. A lighting device comprising: a) a housing with stacks of light emitting diodes arrays positioned within housing and configured to emit light through the housing; and b) a controller for independently controlling light output from the stacks of light emitting diodes arrays, wherein the stacks of light emitting diodes arrays include a master circuit board with connectors and modular light boards with arrays of light emitting diodes having matched connectors configured to detachably and interchangeably couple to the connectors on the master circuit board, wherein modular light boards have 20 or more light emitting diodes and, wherein each light emitting diode uses use 0.2 watts or less of electrical power.

9. The lighting device of claim 8, further comprising a diffuser lens cover positioned in front the stacks of light emitting diodes arrays.

10. The lighting device of claim 8, further comprising a mounting features for securing to a wall or a ceiling.

11. A lighting device comprising: a) a first master circuit board with connectors configured to power arrays of light emitting diodes; b) a first set of modular light boards with the arrays of light emitting diodes and matched connector configured to detachably and interchangeably couple to the connectors on the first master circuit board; c) a second master circuit board with connectors configured to power light emitting diodes; d) a second set of modular light boards with arrays of light emitting diodes and a matched connector configured to detachably and interchangeably couple to the connectors on the second master circuit board; e) a controller for independently controlling light output from first set of modular light boards and the second set of modular light boards; and f) elongated curved diffuser lenses covering or embedding rows of a portion of the light emitting diodes on the first set of light boards and second set of modular light boards.

12. The lighting device of claim 11, further comprising a an elongated housing for supporting first set of modular light boards and the second set of modular light boards.

13. The lighting device of claim 11, further comprising on or more diffuser lens covers.

14. The lighting device of claim 12, wherein elongated the housing includes a hinged access plate of accessing the first set of modular light boards and the second set of modular light boards.

15. A lighting system comprising: a) one or more LED light fixtures, each comprising at least two different sets of LED arrays mounted to modular light boards that emit different output spectra that include a component of white light, wherein the different output spectra combine to produce a combined output light intensity and a combined output light color temperature and wherein each of the LED light fixtures has a master circuit board with connectors configured to power the modular light boards through connectors configured to detachably and interchangeably couple to matched connectors master circuit board; b) a control unit coupled to the one or more LED light fixtures for controlling power to the one or more LED light fixtures and control the combined output light intensity and the output light color temperature to correspond to input intensity and input color temperature values selected; c) one or more control interface devices coupled to control unit for simultaneously selecting the input intensity and input color temperature values; and d) diffuser lenses covering or embedding portions of the light emitting diodes on the modular light boards.

16. The lighting system of claim 15, further comprising sensors coupled to the control unit for automatically adjusting one or more of the combined output light intensity and the combined output light color temperature based on a measured or detected condition to maintain the input intensity and input color temperature selected.

17. The lighting system of claim 16, wherein the sensors include daylight sensors and the measured or detected condition is ambient light.

18. The lighting system of claim 16, wherein the sensors include a white light sensor and wherein the measured or detected condition is an amount of white light in ambient light.

19. The lighting system of claim 16, wherein the sensors include a occupancy sensor and wherein the measured or detected condition is the presence of an occupant in a vicinity of the one or more LED light fixtures.

20. The lighting system of claim 15, wherein the one or more control interface devices include a touch screen device that displays movable intersecting cross-hairs, wherein positions of the intersecting cross-hairs on the touch screen device correspond to the input intensity and input color temperature values selected.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG. 1A is a schematic representation of a master circuit board with modular light boards having matched connectors that detachably and interchangeably couple to the connectors on the master circuit board, in accordance with the embodiments of the invention.

[0023] FIG. 1B shows an elongated curved diffusion lens with light emitting diodes are covered by or embedded within the elongated curved diffusion lens, in accordance with the embodiments of the invention.

[0024] FIG. 1C shows of an array of light emitting diodes on a modular light board that electrically couples to the master circuit board, in accordance with the embodiments of the invention.

[0025] FIG. 1D shows a perspective view of a lighting device with an elongated housing, in accordance with the embodiments of the invention.

[0026] FIG. 1E shows a cross-sectional view of a lighting device with stacked arrays of light emitting diodes for emitting light through opposed sides of a housing structure, in accordance with the embodiments of the invention.

[0027] FIG. 1F is a schematic representation of an advanced control lighting system, in accordance with the embodiments of the invention.

[0028] FIG. 2A shows a view of a control interface device for controlling output lighting from an advanced control lighting system, in accordance with the embodiments of the invention.

[0029] FIG. 2B shows selectable graphical control interfaces operable from a remote control interface device for controlling output lighting from an advanced control lighting system, in accordance with the embodiments of the invention.

[0030] FIG. 2C shows a schematic representation of an advanced control lighting system with a wireless transducer for receiving and processing input control command signals from a remote control interface device, in accordance with the embodiments of the invention.

[0031] FIG. 3A shows schematic representation of a power control center for powering an advanced control lighting system of the present invention.

[0032] FIG. 3B shows a schematic representation of signals control center for controlling an advanced control lighting system of the present invention.

[0033] FIG. 4 shows a schematic representation of a user control interface for inputting control command signals and controlling an advanced control lighting system, in accordance with the embodiments of the invention.

[0034] FIG. 5 shows a schematic representation of an advanced control lighting system in accordance with a preferred embodiment of the invention.

[0035] FIG. 6 shows a schematic representation of a connection layout for an advanced control lighting system of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

[0036] FIG. 1A is a schematic representation 100 of a master circuit board 101 with modular light boards 103 and 105 that have matched connectors 111′ and 113′ that detachably and interchangeably couple to the connectors 111, 113, 115 on the master circuit board 101. The master circuit board 101 includes, or is electrically coupled to, a transformer 106 for converting alternating current from power leads 107 and 109 into direct current for powering light emitting diodes. The master circuit board 101 along with modular light boards 103 and 105 are used in a lighting device such as described in detail below.

[0037] FIG. 1B shows an elongated curved diffusion lens 119 with light emitting diodes 118, 118′ and 118″ that are covered by or embedded within the curved diffusion lens 119. Preferably rows of light emitting diodes on modular light boards are covered or embedded within the curved diffusion lens 119, such as described below. The curved diffusion lens 119 is formed from a clear plastic or epoxy material, such as acrylic. The curved diffusion lens 119 spreads or softens the light emitted by the light emitting diodes within the arrays.

[0038] FIG. 1C shows a schematic representation 125 of an array of light emitting diodes 126, 128 and 135 on a modular light board 103 that electrically couples to a master circuit board 101 (FIG. 1A). Each of the modular light boards 103 and 105 in the lighting device of the present invention include arrays of light emitting diodes with 20 or more discrete light emitting diodes and upwards of 40 or more discrete light emitting diodes. Preferably, the discrete light emitting diodes used in the lighting device of the present invention each use 0.2 watts or less of electrical power. In accordance with the embodiments of the invention, selected rows of the light emitting diodes 126, 128 and 135 are coved by or embedded within elongated curved diffusion lenses 127, 129 and 130. Alternatively, all of the rows of light emitting diodes on the modular light boards 103 and 105 are covered by or embedded with elongated curved diffusion lenses, such as the elongated curved diffusion lens 119.

[0039] The modular light boards 103 and 105 of the lighting device are capable of being individually changed in the event that any one of the modular light boards 103 and 105 fails or diodes on any one of the modular light boards 103 and 105 fails. A lighting device or lighting system of the present invention includes any number of modular light boards and modular light boards can be added or removed according to lighting needs of the environment where the lighting device is installed. Modular light boards 103 and 105 have multiple LED arrays having different corresponding color spectra and/or the modular light boards 103 and 105 each have LED arrays having different corresponding color spectra, such that the color temperature of light emitted can be controlled, such as described in detail below.

[0040] FIG. 1D shows a perspective view of a lighting device 100′ with an elongated housing 131, in accordance with the embodiments of the invention. The elongated housing 131 is configured for holding one or more master circuit boards each with any number of modular light boards 133, 135, 137 and 139 with each of the modular light boards having arrays of light emitting diodes, such as described above. Preferably, the elongated housing 131 has a diffuser lens cover (not shown) that is positioned in front of the arrays of light emitting diodes or modular light boards 133, 135, 137 and 139 for diffusing light emitted therefrom.

[0041] FIG. 1E shows a cross-sectional view 150 of a lighting device 100″ with stacked arrays of light emitting diodes 161 and 163 for emitting light through opposed sides of a housing structure 151′.

[0042] The stacked arrays of light emitting diodes 161 and 163 are positioned on any number of modular light boards that are electrically coupled to a respective master circuit through matched connectors, such as described above with reference to FIG. 1A. Each of the master circuit board is electrically coupled to a transformer and any other necessary circuitry for powering the stacked arrays of light emitting diodes 161 and 163 from an alternating current power source (not shown).

[0043] Still referring to FIG. 1E, in accordance with the embodiments of the invention the lighting device 100″ includes a controller 173. The controller 173 allows for independently controlling light output from each master circuit board, from each modular light boards and/or from each of the stacked arrays of light emitting diodes 161 and 163. The controller includes the appropriate circuitry for executing communication protocols that allow the color temperature of the light output to be adjusted through a user interface, such as described with reference to FIGS. 2A-B.

[0044] Preferably, the lighting device 100″ includes diffuser lens covers 169 and 171 positioned in front of each of the stacked array of light emitting diodes 161 and 163, respectively. In accordance with further embodiments of the invention one of the diffuser lens covers 171, or both of the diffuser lens covers 169 and 171 extends along a wall portion 152 of the housing 151′, such that soft-wash lighting emits from side surfaces 171′ of the diffuser lens cover 171 with the array of light emitting diodes 163 powered on. Alternatively to or in addition to the diffuser lens covers 169 and 171, rows of light emitting diodes within the arrays of light emitting diodes 161 and 163 are covered by or embedded within elongated curved diffuser lenses 129′.

[0045] Referring to FIG. 1E, a lighting system 175 of the present invention includes an advanced control interface. For example, the lighting system 175 includes light fixture 181 with multiple LED arrays 184, 184′ and 184″ having different corresponding color spectra C.sub.1, C.sub.2 and C.sub.3. As described above, each of the multiple LED arrays 184, 184′ and 184″ can include combinations of LEDs having different color spectra C.sub.1, C.sub.2 and C.sub.3. However, for simplicity of explaining operation of the advanced control interface, the LED arrays 184, 184′ and 184″ are described herein as having a single but different corresponding color spectra C.sub.1, C.sub.2 and C.sub.3. The LED arrays 184, 184′ and 184″ are mounted on modular light boards that have matched connectors that detachably and interchangeably couple to the connectors on the master circuit board, such as described with reference to FIG. 1A. Also, the LED arrays 184, 184′ and 184″ can be mounted to provide upward and downward lighting and can include controls for independent upward and downward dimming, such as described above with reference to FIG. 1D.

[0046] Preferably each of the LED arrays 184, 184′ and 184″ emit a component of white light with a component of red, yellow or blue. In other words, the multiple LED arrays 184, 184′ and 184″ are formed form white LEDs that emit light with varying amounts of cool (higher color temperature) and warm (lower color temperature) white light.

[0047] The system also includes a control unit 183 in electrical communication with the light fixture 101. The control unit 183 is configured to independently control the light output intensities I.sub.1, I.sub.2 and I.sub.3 of each of the of the LED arrays 184, 184′ and 184″, such that light emitted from the LED arrays 184, 184′ and 184″ combine to give a total light output intensity I.sub.T. By varying the relative amounts or percentages of light output light intensities I.sub.1, I.sub.2 and I.sub.3 emitted from each of the LED arrays 184, 184′ and 184″, the color spectra C.sub.1, C.sub.2 and C.sub.3 combine to produce a total color temperature C.sub.T of the output light emitted by the light fixture 181 is varied. By maintaining relative amounts or percentages of output light I.sub.1, I.sub.2, and I.sub.3 emitted from each of the LED arrays and simultaneously decreasing or increasing the light output light intensities I.sub.1, I.sub.2, and I.sub.3, the total output light intensity I.sub.T emitted from the light fixture is decrease or increased.

[0048] The system 175 includes a user interface 185, also referred to herein as a control interface device. The control interface device 185 is either a mechanical control interface device, a touch screen control interface device, a remote wireless control interface device, or a combination thereof. Regardless, the control interface device 185 allows a user to adjust, manipulate, or select both the combined output light intensity from LED arrays 184, 184′ and 184″ (by changing I.sub.T) and the combine output light color temperature from LED arrays 184, 184′ and 184″ (by changing the relative percentages of I.sub.1, I.sub.2, and I.sub.3 that contribute to I.sub.T).

[0049] FIG. 2A shows a view 200 of a control interface device 201 for controlling output lighting from an advanced control lighting system, in accordance with the embodiments of the invention. The control interface device 201 is divided into two control zones 211 and 213. In the control zone 211, a user can select a total light output intensity I.sub.T from a set of LED light fixtures within the lighting system, that include LED fixtures similar to the LED light fixture 181 described with reference to FIG. 1E. The total light output intensity I.sub.T is selected by touching a set buttons or by toggling up or down using arrows within the control zone 211. In the control zone 213, a user can select a total color temperature C.sub.T from a set of LED light fixtures within the lighting system, that include LED fixtures similar to the LED light fixture 181 described with reference to FIG. 1E. The total color temperature C.sub.T is selected by touching a set buttons or by toggling up or down using arrows within the control zone 213. The control interface device 201 is portable, or mounted to a wall and preferably includes a master on and off switch for turning on and off a set or sets of LED light fixtures within the lighting system that are assigned to the control interface device 201.

[0050] Referring to FIG. 2B, in accordance with the embodiments of the invention a control interface device is a Bluetooth enabled control interface device that has a touch screen, such as a smart-phone or a computer. In operation, the Bluetooth enabled control interface device “pairs” with a Bluetooth transducer coupled to the control unit 183 (FIG. 1E). The Bluetooth enabled control interface device runs software that generates one or more selectable graphical control interfaces 221, 223 and 225, such as shown in FIG. 2B. The graphical control interfaces 221, 223 and 225 allow a user to select or input target output light intensities and select or input target output light color temperatures. The graphical control interfaces 221 and 223 are both divided into two control zones, 221 being divided into two vertical control zones and 223 being divided in two horizontal control zones. As described above with reference to FIG. 2A, graphical control interfaces 221 and 223 include one control zone for selecting or adjusting a total light output I.sub.T from a set of light fixtures within the lighting system and one control zone for selecting or adjusting a total color temperature C.sub.T from the set of light fixtures within the lighting system.

[0051] Preferably, one of the selectable graphical control interfaces 225 includes movable intersecting cross-hairs. In operation, a user drags or moves positions of the intersecting cross-hairs on the touch screen of the Bluetooth enabled control interface device to select a total light output I.sub.T from the set of light fixtures within the lighting system and a total color temperature C.sub.T from the set of light fixtures within the lighting system either individually or simultaneously.

[0052] FIG. 2C shows a schematic representation 250 of an advanced control lighting system 210 with a wireless transducer 210 for receiving and processing input control signals from a remote control interface control device and/or transmitting system status signals to the a remote control interface device (not shown), such as a smart-phone or a computer. The system 210 includes a set of LED light fixtures. Each of the LED light fixtures within the set of LED light fixtures 201 includes at least two different sets of LEDs 205/206, 205′/206′ and 205″/206″ that emit different output spectra. The LEDs 205/206, 205′/206′ and 205″/206″ are mounted on modular light boards that have matched connectors that detachably and interchangeably couple to the connectors on the master circuit board, such as described with reference to FIG. 1A. Also, the LEDs 205/206, 205′/206′ and 205″/206″ can be mounted to provide upward and downward lighting and can include controls for independent upward and downward dimming, such as described above with reference to FIG. 1D

[0053] The system further includes a control unit 233. The control unit 233 includes all the necessary electrically components, including one or more computing units (CPUs) for running software and analyzing control signals received from sensors 215 and control interface devices and connectors for coupling to and for powering the set of LED light fixtures 203. The sensors 215 can include any number of sensors including but not limited to light sensors for measuring ambient light and/or measuring and calibrating light outputs from the set of light fixtures 203 and motion or occupancy sensors. Preferably, at one of the sensors 215 is used to measure and calibrate light outputs from set of light fixtures 203 such that a selected or target output light intensity and selected or target output light color temperature is maintained. In operation the light sensor measures white light from ambient light. The light sensor send the appropriate control command signals to control unit 213 and the control unit 213 adjusts the total output intensity of from the set of LED light fixtures 203 as wells as the relative intensities of different LEDs 205/206, 205′/206′ and 205″/206″ within the set LED light fixtures 203 to compensate for white light provided by the ambient light.

[0054] Still referring to FIG. 2C, in a preferred embodiment of the invention the lighting system 210 includes a Bluetooth transmitter 231 that allows a user to “pair” a Bluetooth enabled wireless remote control interface device, such as a smart-phone or computer, with the lighting system 210. Preferably, the Bluetooth enabled wireless remote control interface device includes a touch screen and is capable of running application software to display a graphical control interface (FIG. 2B) that includes movable and intersecting cross-hairs, such as described above. The axis 321 on the graphical control interface 225 (FIG. 2B) can, for example, represent output light intensity and the axis 223 on the graphical control interface 225 (FIG. 2B) can, for example, represent output light color temperature. By moving the cross-hairs to different locations 235 and 235′ within the frame of touch screen of the blue-tooth enabled wireless remote control interface device, the light outputs from the set of light fixtures 203 are adjusted to new output light intensities and new output light color temperatures. For example, the graphical representation 209′ corresponds to a lower light output intensity and cooler output light color that the corresponding to the graphical representation 209.

[0055] Referring now to FIG. 3A showing a power control center 300 and FIG. 3B showing a signal control center 350 for powering and controlling the advanced control lighting system of the present invention. The power control center 300 includes a junction box 301 that provides power to a power supply 303. The power control center 300 includes a panel 309 that powers a local control connector 351 of the signal control center 350 and an isolated DMX/RMX 307 that powers a central control connector 307′) of the signal control center 350 through a regulated power source 303′. The power control center 300 also provides power for a set of sensors 311 in communication with a control center CPU 353 of the signals control center 350. The power control center 300 also provided power to a set master DMX output connectors 306 through DMX connectors 305, 305′ and 305″ and the regulated power source 303′.

[0056] In operation, the signal control center CPU 353 receives control command signals from the local control connector 351, the central control connector 307′ and the set of sensors 311. Based on the control command signals the signal control center CPU will adjust the output signals to the set master DMX output connectors 306 that control LED light fixtures in the system of the present invention.

[0057] FIG. 4 shows a schematic representation of a user control interface 400 powered by a regulated power source 303′ and configured for controlling the advanced control lighting system, in accordance with the embodiments of the invention. The user control interface 400 can include an control interface 407 that is coupled to an control interface device 185 (FIG. 1E). The control interface includes button or switch contacts for selecting output light intensities and selecting output light color temperatures, such as described above. The control interface 400 can also include LED indicators to show values of output light intensities and output light color temperatures that have been selected through the buttons or switches of a control interface device 185 (FIG. 1E). The user control interface 400 also includes indicators 405, such as color corrected temperature indicators, that provide an indication of a status of the LED light fixtures within the system that are assigned to the user control interface 400. The user control interface 400 also preferably includes a bluetooth module 403 that allows advanced control lighting system to be control by bluetooth enabled wireless remote control device, such as described with reference to FIG. 2C above and FIG. 5 below. In operation, control command signals are input through the user control interface 400 from the control interface 407, via control interface device 105, or the bluetooth module 403, via bluetooth enabled wireless remote control device. The control command signals are processed by a control interface CPU 401 and an output control signals are transmitted to the local control connector 351 (FIG. 3B) and LED light fixtures assigned to the user control interface 400 are adjusted according to the control command signals through the signal control center CPU 353 and the set master DMX output connectors 306 (FIG. 3B)

[0058] FIG. 5 shows a schematic representation of an advanced control lighting system 500 in accordance with a preferred embodiment of the invention. The system in sets of LED light fixtures 513 and 513 connected to three master DMX output connectors 305, 305′ and 305″ (Channel A, Channel B and Channel C). Each of the LED light fixtures in the sets LED light fixtures 511 and 513 are dual color luminaires (meaning each have two sets of different white LEDs). The system includes a master control center 515 with sensors 311, a power control center 300 (FIG. 3A), the signal control center 350 (FIG. 3B) and user control interface 400 (FIG. 4) and an isolated eternal DMX 509. Other features and specifications of the advanced control lighting system 500, the master control center 515, the connections 305, 305′ and 305″ and the LED light fixtures 511 and 513 are provided in the co-pending U.S. provisional patent applications Ser. Nos. 62/122,621, 62/178,705 and 62/230,798 that are all incorporated herein by reference.

[0059] As described above, the master control center 515 preferably includes a Bluetooth module 503.

[0060] The Bluetooth module 503 allows a Bluetooth enabled wireless remote control device 505, such a smart-phone, to provide control command signals to the system and control the sets of LED light fixtures 511 and 513 through one or more graphical control interfaces 501. Preferably, a user can selectively control output signals provided through connectors 305, 305′ and 305″ corresponding (Channel A, Channel B and Channel C) individually or independently.

[0061] FIG. 6 shows a schematic representation of a connection layout for the advanced control lighting system 600 of the present invention. In the system 600, sensors and a user interface 501′ are electrically couple to a power center interface board 603 through RJ11 and RJ45 plugs. The Power center interface board 603 is electrically coupled to and input/output driver circuit 601. The sets of LED light fixtures 611, 613 and 615 are coupled to the power interface board 603 through double grid boxes 607 and 609. Preferably, the advanced control lighting system 600 is connected and assembled through two-part plug connectors, as shown, such that installing the system and maintaining the system 600 requires a minimized effort. Each of the LED light fixtures 611, 613 and 615 include LED arrays having different two or more corresponding color spectra C.sub.1, C.sub.2 and C.sub.3. The LED arrays are mounted on modular light boards that have matched connectors that detachably and interchangeably couple to the connectors on the master circuit board, such as described with reference to FIG. 1A. Also, the LED arrays can be mounted in light fixtures, such as described with reference to FIG. 1D, to provide upward and downward lighting and can include controls for independent upward and downward dimming control.

[0062] The present invention has been described in terms of specific embodiments incorporating details to facilitate the understanding of the principles of construction and operation of the invention. As such, references herein to specific embodiments and details thereof are not intended to limit the scope of the claims appended hereto. It will be apparent to those skilled in the art that modifications can be made in the embodiments chosen for illustration without departing from the spirit and scope of the invention.