This invention relates generally to grow lights, and particularly to a customizable system of LED grow lights that produces optimal light spectrum signatures for a variety of specific applications.
Grow lights are artificial light sources for stimulating plant growth, typically in applications where there is no naturally occurring light, or where supplemental light is required, such as in indoor applications. Grow lights are used for horticulture, indoor gardening, plant propagation and food production, including indoor hydroponics and aquatic plants. Specific ranges of light spectrum, luminous efficacy and color temperature are desirable for use with specific plants and time periods. In recent years, use of LED (light-emitting diode) grow lights has been increasing due to their high efficiency, ability to produce specific wavelength spectra of light, and continuing decrease in cost.
Conventional LED grow lights may be configured, for example, as an array of LEDs on a support structure, collectively known as a light bar, wherein the light bar may be integral to or a component of a luminaire. However, particular grow lights may be limited to a particular spectrum that is not most desirable for a particular application. In addition, many LED light bars are not interchangeable with various light fixtures and/or frame structures.
Short-day plants are plants that require a period of at least 12 hours of darkness (a photoperiod that has an absence of light in active growth wavelengths) in order to induce and maintain proper flowering/fruiting growth stages. Conventional lighting, such as task lighting and/or emergency/egress lighting, and the like, used for indoor plant growing rooms and other horticultural applications, include light in active growth wavelengths that adversely affect the growth stages of plants.
Accordingly, what is needed is an improved grow light system that is cost-effective, efficient, and that may produce any of a variety of desirable light spectrum signatures in a customizable way.
The present invention relates to lighting, and particularly to a customizable system of LED grow lights that produces optimal light spectrum signatures for a variety of specific applications, and that avoid providing undesirable light in active growth wavelengths at undesirable times.
A light bar may comprise an array of LEDs coupled to a support structure, a driver coupled to, or integral to, the support structure and in electrical communication with each LED of the array of LEDs, and a power cord coupled thereto for supplying power to the driver by connection to an external power source. A support structure may comprise a plurality of mounting holes, mounting slots, mounting brackets, mounting accessories, and/or any combination thereof (not shown), for coupling the support structure to any of a variety of standard lighting system components, such as conventional light fixture components, frame structures, rack systems, and the like, in an interchangeable modular fashion. A light bar may comprise at least one magnet coupled thereto for magnetically coupling the light bar to any of a variety of ferrous components of a light fixture, frame structure, or the like, to which it may be attached.
A first embodiment of a light bar may emit light in a wavelength spectrum that is heavily-weighted in a red wavelength spectrum, particularly suited for fruiting and flowering growth stages of growing plants. For example, the red wavelength spectrum may be in the range of approximately 590 nm to 860 nm. A second embodiment of a light bar may emit light in a wavelength spectrum that is heavily-weighted in a blue wavelength spectrum, particularly suited for beginning growth stages of growing plants. For example, the blue wavelength spectrum may be in the range of approximately 400 nm to 520 nm. A third embodiment of a light bar may emit light in a full wavelength spectrum more closely approximating white light, particularly suited for all cycles of plant life. For example, the white wavelength spectrum may be in the color temperature range of approximately 2500K to 6700K. In addition the spectral output of a light bar may include any of a variety of other useful light output spectra, or combinations thereof. For example, a light bar may emit light in a wavelength spectrum that is limited to a green wavelength range that is safe for exposure to growing plants during “dark” photoperiods (emulating nighttime). The green wavelength spectrum may be in the range of about 528 nm to 540 nm. Other embodiments of a light bar may emit ultraviolet light in a first ultraviolet range of about 315 nm to 400 nm, or in a second ultraviolet range of about 280 nm to 315 nm.
In some embodiments, a light bar may comprise LEDs of various wavelength spectra in any combination with LEDs of other wavelength spectra to create a custom light spectrum signature to address specific lighting needs. In addition, light bars, of the present invention, may be stand-alone components, or they may be combined together in various locations, numbers, and/or configurations, in a modular fashion, to create a custom light spectrum signature to address specific lighting needs.
A green LED exit sign, according to an embodiment, emits light in a limited green wavelength spectrum, providing visibility and a safe means of egress from a structure in which the LED exit sign is located, while not adversely affecting plant growth during dark cycles. Similarly, a green light LED luminaire, according to an embodiment, comprises an LED light bar that emits light in a limited green wavelength spectrum that does not adversely affect plant growth during growth cycles.
Because a green LED exit sign and a green light LED luminaire, as described above, emit light in a limited green wavelength spectrum, such components may be utilized in applications in which light of other wavelengths may adversely affect plant growth during dark cycles. Thus, for example, critical tasks to be performed in grow rooms (such as plant grooming, maintenance, and the like), as well as safe egress from rooms, may be performed under green light illumination during dark cycles without adversely affecting plant growth.
A grow light frame assembly may comprise a framework (such as, for example, a rectangular framework) that may be suspended from or otherwise coupled to a support structure. A grow light bar, or bars, may be suspended or otherwise coupled to the modular grow light frame, in any combination.
The foregoing and other features and advantages of the present invention will be apparent from the following more detailed description of the particular embodiments of the invention, as illustrated in the accompanying drawings.
A more complete understanding of the present invention may be derived by referring to the detailed description and claims when considered in conjunction with the Figures, wherein like reference numbers refer to similar items throughout the Figures, and:
As discussed above, embodiments of the present invention relate to lighting, including grow lights, and to a customizable system of LED grow lights that produces optimal light spectrum signatures for a variety of specific applications, and emergency exit signs that avoid providing undesirable light in active growth wavelengths at undesirable times
Referring to the drawings,
A support structure 20 may comprise a plurality of mounting holes, mounting slots, mounting brackets, mounting accessories, and/or any combination thereof (not shown), for coupling the support structure to any of a variety of standard lighting system components, such as conventional light fixture components, frame structures, rack systems, and the like. Thus, a light bar 10, or a plurality of light bars 10, of the present invention, may be easily and independently replaceable and interchangeable with other standard lighting system components, conventional light fixture components, frame structures, rack systems, and the like, without the need to replace, or purchase for replacement, entire luminaires, frame structures, rack systems, or light fixture systems.
A light bar 10 may comprise at least one magnet 26 coupled thereto for magnetically coupling the light bar 10 to any of a variety of ferrous components 28 of a light fixture, frame structure, or the like, to which it may be attached.
A first embodiment of a light bar 12, as shown in
In some embodiments, a lightbar 10 may comprise a plurality of LEDs 18 coupled thereto, wherein each of the plurality of LEDs 18 may emit light in a Red, Blue, White, First UV, or Second UV light range, in any combination with other of the plurality of LEDs 18 in any other of Red, Blue, White, First UV or Second UV light range. For example, without limitation, a lightbar 10 may comprise an array 30 of LEDs 18, wherein 10% of the array of LEDs is Blue, 35% is Red, 35% is White, 10% is of the First UV range, and 10% is of the Second UV range. By combining various numbers of LEDs 18 of different colors on a single light bar 10, including Blue, Red, White, First UV, and Second UV ranges, a customized combined spectral light output may be achieved that has desired characteristics for specific growing conditions or other lighting needs. Each of a variety of Red, Blue, White, First UV, or Second UV range LEDs may be combined in any number from 0% to 100%, in any combination, as a specialized “Recipe” to provide a particular spectral light output corresponding to that Recipe.
Light bars 10 of the present invention may be stand-alone components, or they may be combined together by a purchaser to provide any of an infinite number of desirable light spectrum signatures. For example, light bars 10 may be combined in various locations, numbers, and/or configurations, in a modular fashion, according to a particular Recipe to create a custom light spectrum signature to address specific lighting needs. In some embodiments, multiple light bars 10 may be electrically-connected in a daisy-chain fashion. Because the light bars 10 are modular, they may be arranged, rearranged, added, deleted, exchanged, or replaced, in any combination, without the need to purchase or replace entire light bar systems, entire fixtures, frame structures, rack systems, and the like.
As described briefly above, short-day plants require a period of at least 12 hours of darkness (a photoperiod that has an absence of light in active growth wavelengths) in order to induce and maintain proper flowering/fruiting growth stages. Conventional lighting, such as task lighting and/or emergency/egress lighting, and the like, used for indoor plant growing rooms and other horticultural applications, includes light in active growth wavelengths (such as light in the blue and red spectral ranges) that adversely affect the growth stages of plants. Referring again to the drawings,
Similarly, referring to
Because a green LED exit sign 34 and a green light LED luminaire 36, as described above, emit light only in a limited green wavelength spectrum, such components may be utilized in applications in which light of other wavelengths may adversely affect plant growth during dark cycles. Thus, for example, critical tasks to be performed in grow rooms (such as, for example, plant grooming or maintenance tasks preformed at night), as well as safe egress, may be performed under green light illumination during dark cycles without adversely affecting plant growth.
Some embodiments of a green light LED luminaire 36, and/or a green LED exit sign 34, may comprise a battery backup (not shown) to allow for continuous operation during power outages.
Referring to
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Each end 54 of each side rail 40 may comprise an end cap 52 coupled thereto, as shown in
A modular grow light frame 40, as shown in
As shown in
A grow light frame assembly 76 may comprise a pair of parallel side rails 40 and a pair of parallel end rails 42 coupled together to form a rectangular frame 82. The frame 82 may be of any length and any width corresponding to the lengths of the pair of side rails 40 and the lengths of the pair of end rails 42, respectively. In the embodiment shown, each of the side and end rails 40 and 42 is of common steel channel strut. As shown, each side rail 40 may be coupled to each end rail 42 by a corner bracket 70, wherein the corner bracket 70 is configured for coupling to the ends of the corresponding side and end rails 40 and 42, respectively, and bolted thereto by use of bolts 68 and receiving nuts 64. In the embodiment shown, a receiving nut 64 may be spring-loaded for fitting within a channel 62 of the channel strut side and end rails 40 and 42. The spring 74 biases the receiving nut 64 against the channel strut arms but may be overcome by pressing the receiving nut 64 inward, thereby allowing the receiving nut 64 and spring 74 to slide within the channel 62 for adjusting the location of the receiving nut 64 relative to the channel 62. In the embodiment shown, one of the side rail 40 or end rail 42, at a corner junction, may comprise a single receiving nut 64, and the other of the side rail 40 or end rail 42 may comprise two receiving nuts 64, one of the two receiving nuts 64 being located at the corner where the two rails intersect. A mounting bolt 68 is inserted through the corner bracket 70 and into each receiving nut 64 to secure the corner bracket 64 to the rail and fix the receiving nut 64 to the rail. When the mounting bolts 68 are loosened, the corresponding receiving nuts 64 and springs 74 are free to slide within the channel 62 of the rail to adjust the location of the corner bracket 70, but only in the rail comprising the receiving nut 64 located at the corner where the two rails 40 and 42 intersect. In this manner, the width of the frame assembly 76 may be adjusted by changing the positions of the corner brackets 70 relative to the end rails 42. Similarly, by changing the interfaces between the side rails 40 and end rails 42, such that the end rails 42 run into the ends of the side rails 40, the length of the frame assembly 76 may be adjusted by changing the positions of the corner brackets 70 relative to the side rails 40. One or more of the mounting bolts 68 may be an eyebolt configured for suspending the frame assembly 76 from a support structure. Furthermore, a frame assembly 76 may comprise at least one hook 94 coupled thereto for suspending one or more light bars 10 from the frame assembly 76 in the manner shown in
The components defining any grow light system may be formed of any of many different types of materials or combinations thereof that can readily be formed into shaped objects provided that the components selected are consistent with the intended operation of a grow light system. For example, the components may be formed of: rubbers (synthetic and/or natural) and/or other like materials; glasses (such as fiberglass) carbon-fiber, aramid-fiber, any combination thereof, and/or other like materials; polymers such as thermoplastics (such as ABS, Fluoropolymers, Polyacetal, Polyamide; Polycarbonate, Polyethylene, Polysulfone, and/or the like), thermosets (such as Epoxy, Phenolic Resin, Polyimide, Polyurethane, Silicone, and/or the like), any combination thereof, and/or other like materials; composites and/or other like materials; metals, such as copper, zinc, magnesium, titanium, copper, iron, steel, carbon steel, alloy steel, tool steel, stainless steel, aluminum, any combination thereof, and/or other like materials; alloys, such as aluminum alloy, titanium alloy, magnesium alloy, copper alloy, any combination thereof, and/or other like materials; any other suitable material; and/or any combination thereof.
Furthermore, the components defining any grow light system may be purchased pre-manufactured or manufactured separately and then assembled together. However, any or all of the components may be manufactured simultaneously and integrally joined with one another. Manufacture of these components separately or simultaneously may involve extrusion, pultrusion, vacuum forming, injection molding, blow molding, resin transfer molding, casting, forging, cold rolling, milling, drilling, reaming, turning, grinding, stamping, cutting, bending, welding, soldering, hardening, riveting, punching, plating, and/or the like. If any of the components are manufactured separately, they may then be coupled with one another in any manner, such as with adhesive, a weld, a fastener (e.g. a bolt, a nut, a screw, a nail, a rivet, a pin, and/or the like), wiring, sewing, any combination thereof, and/or the like for example, depending on, among other considerations, the particular material forming the components. Other possible steps might include sand blasting, polishing, powder coating, zinc plating, anodizing, hard anodizing, and/or painting the components for example.
The embodiments and examples set forth herein were presented in order to best explain the present invention and its practical application and to thereby enable those of ordinary skill in the art to make and use the invention. However, those of ordinary skill in the art will recognize that the foregoing description and examples have been presented for the purposes of illustration and example only. The description as set forth is not intended to be exhaustive or to limit the invention to the precise form disclosed. Many modifications and variations are possible in light of the teachings above without departing from the spirit and scope of the forthcoming claims.
Number | Date | Country | |
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62976674 | Feb 2020 | US |