Abstract:
The invention is an assembly of elements to collect solar energy and rain water. Solar energy is converted to electricity by either photovoltaic film or laminate panels or sheets mounted atop arcuate, curved canopy structures that are formed and positioned like “wings”. Rainwater is collected by the low-incidence arcuate curved wings and directed to a central trough along the wings&#39; structural spine, which conducts it through a support column to a water container or vessel. In a preferred embodiment the vessel is an underground container extending parallel to and as long as the above-ground structural spine of the assembly.

Description:
[0001]    This application claims the benefit of priority from U.S. Provisional Application No. 61,306,677 filed Feb. 22, 2010. 
     
    
     FIELD OF THE INVENTION 
       [0002]    The invention relates to a lightweight, easy to assemble, arcuate-winged solar canopy assembly that that combines electric power generation with various additional uses. 
       BACKGROUND 
       [0003]    Solar panels placed atop free standing structures combine power generation with, for example, shade production, which results in the maximization of the value and use of the airspace. Freestanding structures that generate electric or wind power from rooftop devices to electrically charge and run vehicles are known in the art. See for example, Japanese Patent Publication No. 09-002259, U.S. Pat. No. 6,590,363 and United States Patent Publication No. 2010/0000596 published Jan. 7, 2010. More specifically, JP 09-002259 discloses a photovoltaic power generation apparatus and a cartridge-type storage battery for a vehicle, for example a train, which can be exchanged when the vehicle is parked in a charging station having the photovoltaic power generation mounted on its roof. U.S. Pat. No. 6,590,363 discloses a charging station having a duct, a wind power generator and a battery in which the duct is formed from upper and lower panels that include a solar panel. The battery stores the power generated by the wind power generator and the solar panel and the duct is formed so as to collect wind blowing toward the wind power generator and to increase the speed of the collected wind. United States Patent Publication No. 2010/0000596 discloses a dual-inclination support structure having an array of photovoltaic modules mounted on its roof and having multiple uses such as advertising, water collection, energy transmission, and the ability too place the solar cells at different angles to improve yields. Lastly, United States Patent Publication No. 2010/0108113 discloses an aeroelastic solar power-generating canopy that can be formed over supporting structures without requiring an existing roof. 
         [0004]    Certain problems are associated with the foregoing approaches. The rigid solar panel installations known in the art typically are mounted atop already existing roof structures. This makes them not readily accessible, often compromises roof integrity and results in a rigid and expensive assembly. In addition, conventional roof top solar arrays are typically designed and disposed along a single slope plane, which may not be ideal in some locales, and are problematic for example where there is snow or ice buildup in the winter. Inclined, fixed plane canopies with mono-planar wings cannot maximize solar collection capability without adjustment to the wing angle. 
         [0005]    It would be advantageous to have a lightweight, multi-purpose solar canopy that can be assembled and disassembled easily and maximizes solar collection capability at times associated with air-conditioning needs and peak utility needs without the need to adjust the wing angle. It would also be advantageous if the assembly was constructed of low-maintenance materials with integral finishes, and if the downstream replacement or upgrade of the solar generation element represented minimal waste disposal costs and issues. The foregoing is provided by this invention. 
       SUMMARY OF THE INVENTION 
       [0006]    The invention is an assembly of elements to collect solar energy and rain water. Solar energy is converted to electricity by either photovoltaic film or laminate panels or sheets mounted atop arcuate, curved canopy structures that are formed and positioned like “wings”. Rainwater is collected by the low-incidence curved wings and directed to a central trough along the wings&#39; structural spine, which conducts it through a support column to a water container or vessel. In a preferred embodiment the vessel is an underground container extending parallel to and as long as the above-ground structural spine of the assembly. The low-incidence curved wings allow for optimal solar collection (i.e., power production) in mid-day during summer months in the northern latitudes when utilities often experience their highest daily and historic demand. The principal application is for parking lots, as the full canopy assembly provides site and vehicle cooling, and mitigates against albedo effect for additional environmental benefits. The invention can be used to collect solar energy, and water from rain or snowmelt. In addition to parking lots, it can be installed in parks, marinas, walkways, remote areas, and urban areas with adequate solar access to provide electricity and store water for later distribution. It further provides a non-polluting, zero carbon emission method of supplying electricity, and the ability to charge or re-charge electric vehicles or equipment without additional fuel expenditure or supplemental connection to an existing electrical grid. In it&#39;s parking lot application, it provides shade for vehicles, thereby reducing the need for drivers to run their air conditioning systems to pre-cool their vehicles prior to driving. In its farm application, it collects water for redistribution, provides electricity to pumps and other farm equipment and provides shelter for crop, feed, animals and equipment storage. In it&#39;s marine application, it may be erected on a pier and provide grey water for cleaning watercraft, power for recharging boat batteries and sunshade for pier users and craft. The arcuate curvature in the winged solar canopy assembly of the invention creates a “waterfall effect”, such that water moving toward the trough at the proximal edges of the canopy increases in speed due to the curvature and pulls the water at the distal edges of the canopy along with it. This causes the water on the distal edges of the canopy to move faster than water falling on a non-curved canopy. This “sweeping” of the canopy by rainfall assists in the cleaning of the assembly. In addition, the structure and shape of the canopy wing arms allow the edges to vibrate in the wind, which also facilitates the movement of water, snow and debris off the canopy. 
         [0007]    The solar canopy assembly of the invention includes at least two pairs of dual-inclined wing structural arms. The arms are composed of a first pair of low-incidence, downwardly-curved or arcuate wing arms and a second pair of low-incidence, downwardly curved or arcuate wing arms. Each of the first and second pairs of downwardly-curved arcuate wing arms have proximal ends and distal ends. The proximal ends in each pair are arranged to be in opposed relation to each other, forming a structural spine in the assembly. The curvature in the downwardly-sloping, arcuate, wing arms begins at the distal ends of the wing arms and increases in steepness as one nears the proximal ends and structural spine. For stability, the wing arms increase in thickness from their distal ends, which are relatively thin, to their proximal ends, which are relatively thick. These first and seconds dual-inclined wing members are arranged in spaced apart relation to each other for reasons discussed below. 
         [0008]    The assembly of the invention also includes at least two support columns for supporting the wing arms. A first support column is end-mounted on a ground surface or in the ground at its lower end and extends vertically along a substantially longitudinal axis to support at its other end the weight of the first pair of dual-inclined wing structural arms. A second support column is likewise end-mounted on a ground surface or in the ground and extends vertically along a substantially longitudinal axis to support at its other end the weight of the second pair of dual-inclined wing members. The support columns have a height sufficient to enable vehicles to traverse or park underneath the canopy assembly. Their maximum height is limited by the length of the wing arms, the distance between them, and the overall structural integrity of the assembly. The first and second support columns and wing members are in spaced-apart relation to each other. The distance between the support columns and their corresponding structural arms is variable, and choosing an appropriate distance is well within the skill in the art, a typical distance being between about 9 ft to about 15 ft. Additional support columns and wing structural arms may be employed and arranged in the same fashion. 
         [0009]    The third major element composing the assembly is at least one pair of rigid arcuate canopy decks. The pair of arcuate canopy decks is formed and positioned to span from one wing member pair to another wing member pair and is mounted on the top surface of each wing member at the deck edges. The decks are further formed and positioned to follow the curvature of the pairs of low-incidence, arcuate wing arms. The length of each deck substantially conforms to the length of the wing arm and the width of each deck is such that the deck can be mounted at it edges onto the top of wing arm. Each of the canopy decks in the assembly is composed of a corrugated structural sheet or its equivalent demountably coupled or affixed to the top of the wing arms, a substrate layer superposed and mounted on the corrugated structural sheet and a means to collect solar radiation superposed on the substrate layer. The substrate layer is composed of a waterproof, rigid material that is thin in cross-section, for example, marine plywood, Nyloboard™ (Nyloboard LLC, Covington, Ga.), or an equivalent water-resistant material of adequate structural capacity. Any type of solar collection means may be employed, but preferred are photovoltaic laminates. One such laminate is manufactured and sold by Uni-Solar, United Solar Ovonic LLC (Rochester Hills, Mich.). The photovoltaic film laminate material is adhered to the top of the substrate layer by any appropriate means. Exemplary are tacks, clips, straps, hold downs, fasteners, and adhesives, with integral adhesives being preferred. When the canopy deck pairs span from one wing to the next, the number of canopy decks required will be one less than the number of wing arms and support columns. In an alternative embodiment, the canopy decks may be twice or thrice as wide, so that additional wings are spanned by each canopy deck. 
         [0010]    The fourth major element included in the assembly is a trough, which is formed and positioned centrally extending longitudinally between the proximal edges of the deck canopy that form the structural spine of the assembly. The trough extends lengthwise (longitudinally) from the first pair of wing arms to the terminal pair of wing arms. 
         [0011]    Additional elements that can compose the assembly include water storage means positioned either above or below ground level, but in either location below the level of the wing members, and means to transport water from the overhead trough into the water storage means. When the support columns are hollow, the support columns can comprise the water transport means In such case a hole in the trough concentrically located over the open top end of the support column will allow the water to drain from the trough into the support column and a hole in the top of the water storage means will allow the water to drain from the support column into the water storage means by way of a coupling pipe. An optional rain leader tube may be positioned inside the top of the support column to better direct the flow of water down the column. The rain leader tube may be a separate piece or it may be integral with the trough and have a diameter smaller than the diameter of the support column. In the latter case, the rain leader tube will have a diameter identical to the diameter of the hole in the trough. As a separate piece the rain leader tube may be slightly larger in diameter than the diameter of the hole in the trough and smaller than the diameter of the support column. In either case, the rain leader tube projects into the top of the hollow support column. 
         [0012]    When the support columns are solid, a separate water conductor mounted adjacent to the support column can be employed. The separate water conductor may be in the form of a tube, however, the shape is unimportant as long as the conductor has the ability to transfer the water from the overhead trough into the water storage means. In such case a hole in the trough, optionally with an integral rain leader, is positioned to project into and drain water directly into the separate water conductor. The water exits the conductor via a coupling pipe and passes through a hole in or near the top of storage means. When the water storage means is positioned below ground level, it and the support columns (and vertically disposed hollow tubes if present) are mounted on an underground footing formed and positioned to support their weight and resist all superimposed structural loads. When the water storage means is positioned above ground, the support columns may be directly mounted onto the ground surface, for example the paving or a pier. In an alternate embodiment, the water storage means may be hung from the wing arms at an appropriate height. In this embodiment, water collected in the water storage means can be used with the need for a separate pump. This would be of particular advantage is the assembly is employed in its marine application. 
         [0013]    The dual-inclined, arcuate wing members and the support columns may be composed of high strength-to-weight ratio material. Exemplary materials that may be employed are plastic, fiberglass, aluminum, aluminum alloy, fiber reinforced plastic, composites, composite wood and carbon fiber. Fiber reinforced plastic is preferred. Likewise, the support columns may be composed of the same or a different high strength to weight ratio material. If the support columns are hollow and used for water transport, the columns should be composed of a material that will not decay in the presence of water, for example, plastic, fiberglass, fiber reinforced plastic or carbon fiber. 
         [0014]    In another embodiment of the design, the plurality of spaced-apart, wing structural arms may be replaced with a single pair of continuous wings that extend along the length of the entire canopy structure. In this embodiment, the corrugated structural sheet, substrate, and photovoltaic laminate (i.e., the canopy deck) are superposed atop the continuous wings (in that order). Because in this case it is necessary to substantially minimize the weight of the wings, an extremely light-weight material must be employed, for example Nomex® honeycomb panels (DuPont, Wilmington, Del.). The continuous, arcuate wings of this embodiment have an upper portion and a lower portion and are hollow except for one or more fixed braces, or spars, extending between the upper portion of the wings and the lower portion of the wings. Like the first embodiment, the arcuate wings have proximal ends and distal ends and the proximal ends are arranged to be in opposed relation to each other forming a structural spine in the assembly. The curvature in the downwardly-sloping, arcuate, continuous wing arms begins at the distal ends of the wing arms and increases in steepness as one nears the proximal ends and structural spine. The upper and lower portions meet distally in a distal terminus, as is the case in the first described embodiment. 
         [0015]    The water storage means should be composed of concrete, fiberglass, metal or other suitable waterproof composite material. Preferably the water storage means comprises a substantially horizontally disposed, rigid, tubular container similar to a water drain pipe of the sort used for water run-off. The container is capped or sealed at each end and extends the length of assembly in substantially the same plane as the structural spine. Such containers are known in the art. See for example, U.S. Patent Publication 2009/0230142 and U.S. Pat. Nos. 4,190,187; 5,954,224; 5,979,748 and 6,852,267. 
         [0016]    To enable use of the solar power collected by the canopies, the invention includes at least one inverter to convert direct current from the solar collection means to alternating current for storage and/or distribution. In addition, to maximize its functionality, the system can include at least one vehicle charging outlet, the outlet being able to draw electric power from the inverter, or grid, to charge electric vehicles or other equipment. 
         [0017]    In another aspect, the invention is a kit for constructing an arcuate winged solar canopy comprising least two pairs of dual-inclined wing structural arms. The arms are composed of a first pair of low-incidence, downwardly-curved or arcuate wing arms and a second pair of low-incidence, downwardly curved or arcuate wing arms. Each of the first and second pairs of downwardly-curved arcuate wing arms have proximal ends and distal ends. The proximal ends in each pair are arranged to be in opposed relation to each other forming a structural spine in the assembly. The curvature in the downwardly-sloping, arcuate, wing arms begins at the distal ends of the wing arms and increases in steepness as one nears the proximal ends and structural spine. For stability the wing arms increase in thickness from their distal ends, which are relatively thin to their proximal ends, which are relatively thick. In other words, beginning from the proximal end the wings arms taper in thickness approaching the distal end, and terminate in a taper end. These dual-inclined wing members are arranged in spaced apart relation to each other for reasons discussed below. 
         [0018]    The kit of the invention also includes at least two support columns for supporting the wing arms. A first support column is end-mounted on a ground surface (or underground as describe above) at its lower end and extends vertically along a substantially longitudinal axis to support at its other end the weight of the first pair of dual-inclined wing structural arms. A second support column is likewise end-mounted on a ground surface and extends vertically along a substantially longitudinal axis to support at its other end the weight of the second pair of dual-inclined wing members. The support columns have a height sufficient to enable vehicles to traverse or park underneath the canopy assembly. The first and second support columns and wing members are in spaced-apart relation to each other. The distance between the support columns and their corresponding structural arms is variable and choosing an appropriate distance is well within the skill in the art, a typical distance being between about 9 ft to about 15 ft. Additional support columns and wing structural arms may be included in the kit and arranged in the same fashion. 
         [0019]    The third major element included in the kit is at least one pair of rigid canopy decks. The canopy decks are formed and positioned to span from one wing member pair to another wing member pair and are mounted on the top surface of each wing member at the deck edges. The decks are further formed and positioned to follow the curvature of the pairs of low-incidence, arcuate wing arms. The length of each deck substantially conforms to the length of the wing arm and the width of each deck is such that the deck can be mounted at it edges onto the top of wing arm. Each of the canopy decks in the assembly is composed of a corrugated structural sheet or its equivalent, a substrate layer superposed on the corrugated sheet and a means to collect solar radiation superposed on the substrate layer. Any type of solar collection means may be employed, but preferred are photovoltaic laminates. One such laminate is manufactured and sold by Uni-Solar, United Solar Ovonic LLC (Rochester Hills, Mich.). The photovoltaic film laminate material is adhered to the top of said substrate layer by any appropriate means. Exemplary are tacks, clips, straps, and adhesives, with integral adhesives being preferred. The number of canopy decks included in the kit will be one less than the number of support columns and wing arms provided in the kit. 
         [0020]    The fourth major element included in the kit is a trough, which is formed and positioned between the proximal edges that form the structural spine of the assembly. The trough is formed to extend longitudinally from the first pair of wing arms to the second pair of wing arms, or the last pair of wing arms if more than two are provided in the kit, as already described. 
         [0021]    Additional elements that may be included the kit include water storage means as described above positioned either above or below ground level, but in either location below the level of the wing members, and means to transport water from the overhead troughs into the water storage means, also as described above. When the support columns are hollow, the support columns can comprise the water transport means. In such case a hole in the trough directly above the open top end of the support column will allow the water to drain from the trough into the support column and a hole in the top of the water storage means will allow the water to drain from the support column into the water storage means. When the support columns are solid, a separate water conductor mounted adjacent to the support column can be employed. The separate water conductor may be in the form of a tube, however, the shape is unimportant as long as the conductor has the ability to transfer the water from the overhead trough into the water storage means. In such case a hole in the trough is positioned to drain water directly into the separate water conductor, and the water exits the conductor via a hole in the storage means. When the water storage means is positioned below ground level, it and the support columns (and vertically disposed hollow tubes if present) are mounted on an underground footing formed and positioned to support their weight and resist all superimposed structural loads. 
         [0022]    In another embodiment of the design, the wing structural arms included in the kit may be replaced with a pair of continuous wings that extend along the length of the entire canopy structure, as opposed to a plurality of pairs of wings that are in spaced apart relation to each other extending along the length of the entire canopy structure. The continuous arcuate wings of this embodiment have an upper panel and a lower panel and are hollow except for one or more fixed braces extending between the upper panel of the wings and the lower panel of the wings. Like the first embodiment, the arcuate wings have proximal ends and distal ends and the proximal ends are arranged to be in opposed relation to each other forming a structural spine in the assembly. The curvature in the downwardly-sloping, arcuate, continuous wing arms begins at the distal ends of the wing arms and increases in steepness as one nears the proximal ends and structural spine. 
         [0023]    In yet another aspect the invention comprises a method for providing a solar canopy assembly of the invention. The method includes erecting the support columns included in the kit in a space-apart manner such that they extend substantially vertically along their longitudinal axes and are far enough apart so that a vehicle is able to traverse between them. Each pair of dual-inclined wing members included in the kit are mounted at their proximal ends on or near the top of each support column such that the proximal ends in each pair are in opposed relation to each other and form a structural spine in the assembly. The pairs of canopy decks, which are formed and positioned to follow the curvature of the pairs of low-incidence, downwardly curved wing arms, are mounted on the wing members at their edges so that they span from wing arm to wing arm. A water trough is next disposed between the proximal edges of the wing members forming the structural spine and extending lengthwise from wing arm to wing arm. The additional elements included in the kit as described above may then be positioned. 
     
    
     
       DESCRIPTION OF THE DRAWINGS 
         [0024]      FIG. 1  is a side elevation view of a cross section of the assembly of the invention taken along the line  1 - 1  in  FIG. 2 . 
           [0025]      FIG. 2  is a plan view of the assembly of the invention. 
           [0026]      FIG. 3  is a front elevation view of the assembly of the invention. 
           [0027]      FIG. 4  is a detailed side elevation view of one half of the wing structure of the invention. 
           [0028]      FIG. 5  is a detailed side elevation view identical to  FIG. 4  but illustrating another embodiment of the wing structure of the invention. 
           [0029]      FIG. 6  is a side elevation view of the bottom of the support column element of the assembly. 
           [0030]      FIG. 7  is a plan view of  FIG. 6 . 
           [0031]      FIG. 8  is a cross section plan view of the top of the support column taken along the lines  8 - 8  in  FIG. 4 . 
           [0032]      FIG. 9  is front elevation view of the top of the support column taken along the line  9 - 9  in  FIG. 4 . 
           [0033]      FIG. 10  is a cross section view of the top of the support column taken along the line  10 - 10  in  FIG. 9 . 
       
    
    
     DETAILED DESCRIPTION 
       [0034]      FIG. 1  shows a preferred embodiment of the invention. In  FIG. 1 , canopy assembly  25  is composed of support column  1  which extends substantially vertically from below ground level to a height sufficient to permit the parking of vehicles or storage of equipment under attached wing member  2 . Support columns  1  may have a cylindrical shape, although other various shapes may be employed, for example open box, octogonal, hexagon and the like. Wing member  2  is composed of two, arcuate, structural arms  3  attached to support column  1  at one end by means of wing connection flange  5 . Mounted on wing structural arms  3  are structural canopy decks (unnumbered) composed of three elements  8 ,  10  and  11 . The structural canopy decks are composed of corrugated structural sheet  8  made of fiberglass, aluminum or fiber reinforced plastic for example. The decks are positioned on structural arm  3  such that the deck&#39;s parallel ridges and furrows run parallel to the support columns as can best be seen in  FIGS. 1 and 3 . The structural canopy decks and structural sheet  8  substantially conform in length to the length of the wing arms and are wide enough to span from one wing arm pair to another wing arm pair. Superposed and mounted on, and attached to the ridges of, structural deck  8  is substrate  10 . Substrate  10  provides a thin, flat surface onto which the means for collecting solar radiation are positioned. Substrate  10  may be composed of any type of waterproof or water resistant planar material that can conform to the arcuate shape of wing member  2 . Superposed on and attached to the upper surface of substrate  10  is solar radiation collection means  11 . Solar radiation means  11  may comprise a photovoltaic film laminate, a preferred means for the collection of the solar radiation. Such flexible photovoltaic panels or films that can be mounted on curved structures are known in the art. One such film laminate is available through Uni-Solar, United Solar Ovonic LLC (Rochester Hills, Mich. 48309). 
         [0035]    Duel-inclined, wing structural arms  3  are formed with a low-incident, arcuate, downwardly-sloping curve and are positioned with one end proximal to the support column and the other end distal to the support column. The curvature in the structural arms begins at the distal end and increases in steepness near the proximal ends, and the height dimension of the structural arms also increases from distal to proximal ends as can best be seen in  FIG. 1 . The actual height (from arm bottom to arm top) and length (from distal end to proximal end) of the wing arms throughout their span is dependent on the length of the span, the weight of the structural deck, substrate, and solar collection means, and the environment in which the assembly will be used. Preferably, the top and bottom of the structural arms taper or decrease in height as they approach the distal end and they meet and form a taper terminus at the distal end. The determination of an appropriate height and length is within the level of skill in the art. 
         [0036]    Structural arms  3  are constructed with a plurality of optional cut-outs, or ovoid holes in order to help minimize its weight. As also shown in  FIG. 1 , the proximal ends of the arms are in opposed relation to each other, thereby forming a structural spine in the assembly running from support column to support column. Water trough  12  is formed and positioned atop the structural spine with the bottom of the trough positioned directly on the spine, and the sides of the trough adjacent to and meeting the proximal ends of the wing arms such that the trough is able to collect water (or snow). Preferably, the trough is formed with least one hole (not numbered) positioned concentrically over support column  1 . Mounted inside support column  1  is cylindrical rain leader  13  extending from trough  12  into support column  1 . Rain leader  13  is formed and positioned to direct the water collected in the trough into support columns  1 . It&#39;s diameter is the same or greater than the diameter of the hole in the trough (See  FIG. 2 ). Also mounted within support columns  1  are column closure discs  14  disposed near the bottom of the support column. The discs are positioned within the columns with the disc edges abutting the interior surfaces of the columns and having their planer surfaces substantially perpendicular to the longitudinal axis of the column, thereby creating a false bottom in the column. 
         [0037]    The two wing arms,  3 , can be mounted on support column  1  by a separate mounting member, or the arms may be composed with an integral, flanged, mounting cylinder. That latter embodiment is shown in the figures and best seen in  FIGS. 8-10 . Referring now to  FIG. 8 , there is shown in cross sectional plan view wing arms  3 , each of which terminates in integral half-cylinder wing connection flange  5 . Each flange,  5 , is formed in mating half-cylinders which enclose support column  1  and are formed with integral longitudinally-flanged edges. The flanged edges have a series of holes arranged longitudinally from top to bottom (shown in  FIG. 9 ). The mating half-cylinders are positioned such that their flanged edges mate and wing flange connection bolts  6  extend through the series of holes to secure the pairs of wing arms together tightly surrounding the top of support column  1 . Also shown is centrally disposed rain leader  13  and water trough  12 . In  FIGS. 9 and 10  there is shown the relevant portion of wing arms  3  as secured to support column  1  in side elevation views. A series of wing connection bolts extend through holes disposed in the mating flanged portions of the wing connection flanges. Water trough  12  is positioned above and rests on the top end of support column  1  and the mating flanged portions of the integral wing connection flanges of wing structural arms  3 . Trough  12  is formed with a flat bottom, and opposed, upwardly extending, parallel sides which bend outwardly at the uppermost portion forming dog legs  23  so as to fit under the proximal edges of corrugated structural sheet  8  (best seen in  FIG. 4 ). Optionally, trough  12  may be formed with integral centrally mounted splashguard  26  to assist in maximizing the amount of rainwater caught by trough  12 . Cylindrical rain leader  13 , open on both ends, has a diameter the same or slightly greater than the diameter of the hole in trough  12  for the purpose of leading the water into support column  1 . Deck attachment block  7  provides additional stability to the structural arms at their mounting point on support column  1 . 
         [0038]      FIG. 2  is a plan view of the assembly of the invention illustrating the general position of structural arms beneath and supporting structural sheet  8 , substrate  10  and solar radiation collection means,  11 . Three structural arms,  3 , are illustrated in this figure only two of which have rain leaders for water collection. The maximum number of rain leaders employed is limited by the number of support columns; any number equal to or less than the number of support columns will work, although many less may be necessary to allow the flow of water into the support columns in the given environment in which the canopy is used. As can be seen, structural arms  3  are in regular spaced-apart relation to each other to permit parking and transverse of vehicles under the canopy assembly. 
         [0039]      FIG. 3  is a front elevation view of the canopy assembly  25  of the invention. In  FIG. 3  there is illustrated a plurality of spaced-apart support columns  1  having a plurality of spaced-apart structural arms  3  supported thereby and mounted thereon by means of connection flange  5  and connection bolts  6 . The columns and structural arms may be spaced any distance apart, although three different distances of 9, 12 and 15 feet are shown. Mounted on structural arms  3  is the canopy deck. At the distal edge of the deck there is formed and arranged deck closure bracket  9  extending longitudinally along the distal end of the deck so as to enclose the distal edge of the deck. Deck closure bracket may be fastened to the deck by appropriate fastening means or it may be formed to be demountably coupled to the distal edge and clipped into place without fasteners. Water collection means  17 , sealed by water caps  18  at both ends, is shown extending longitudinally beneath the ground surface the entire length of canopy assembly  25 . Collection means  17  is connected to water trough  12  by means of structural arm  3  as discussed in general terms previously. Structural arm  3  is formed having one or more bore(s),  15 , through its side and positioned slightly above (higher than, in the vertical direction) the top of water collection means  17 . A coupling pipe,  16 , (not shown in  FIG. 3 ; see  FIG. 1 ) extends between bore  15  and collection means  17  to enable water to flow from the column into the collection means. As illustrated in  FIG. 3 , bore  15  is positioned high enough on structural arm  3  so that gravity flow is used to move the water from the water trough into the water collection means but bore  15  is not positioned so high that coupling pipe  16  is very long in order to minimize the chance of pipe breakage. Below bore  15  and mounted within wing structural arm  3  is column closure plate  14 , which provides a bottom to prevent water leakage from reaching and damaging the bottom of the structural arm at its mounting end. Collection means  17  is, in its preferred embodiment, made of tubular HDPE pipe; however, other water-tight containers are well known in the art and may be used for this purpose. In operation, rain or snow hits the canopy deck and is shunted into water trough  12  by means of the arcuate sloping of the deck. From the trough, the rain or snow enters the support columns by means of the hole(s) in the columns and the optional rain leader(s)  13 . Gravity then carries the water or snow,  19 , into water storage means  17 . Support columns  1  are mounted on underground footings  21 , which are surrounded by structural fill  22 . Alternatively, the support columns may be mounted above-ground. The mounting means is discussed in detail below in reference to  FIGS. 6-7 . 
         [0040]    Also shown in  FIG. 3  are optional elements inverter  23  and vehicle charging outlet  24 . Inverter  23  converts direct current from the solar radiation collection means to alternating current for storage and/or distribution. Vehicle charging outlet  24  is coupled to and able to draw electric power from the inverter to charge electric vehicles or other electric equipment. How these elements are positioned in the canopy assembly is not critical, so long as they can be accessed and made use of by vehicles and the like. This is within the level of skill in the art. 
         [0041]      FIGS. 4-5  illustrate different embodiments of the wing structural arms of the assembly. In  FIG. 4  the arm is shown with integral wing connection flange  5  as discussed previously. Bracket shaped deck closure plate  9  covers the distal end of the arm for cosmetic purposes as briefly discussed above. The edges of the canopy deck are affixed to the top of wing structural arm  3  by means of a mounting in or on the furrows of corrugated sheet  8 . This mounting may a permanent mounting or, preferably, the deck may be removably affixed, for example by a plurality of bolts extending through mating holes in the furrowed portion of the deck and in the arm, or by a plurality of screws. Methods of either permanent or removable affixation are known in the art and may be employed for this purposed. Resting and superposed on the ridges of corrugated sheet  8  is substantially planer, flexible substrate  10 , the side edges of which are affixed to the ridge portions of deck  8 . Superposed on the top surface of substrate  10  and extending on all sides to the edges of the substrate is flexible photovoltaic laminate  11  and water trough  12  is shown centrally disposed, with its dog leg upper portion  27  contiguous with the underside of the deck ridge. 
         [0042]      FIG. 5  illustrates a second embodiment of the wing structural arm of the assembly in which the plurality of paired, space-apart wing structural arms are eliminated and replaced by a pair of continuous wings that extend longitudinally along the entire canopy structure. The continuous arcuate wings,  40 , of this embodiment have an upper panel  43  and a lower panel  44  and are hollow except for one or more fixed braces or spars,  41 , extending between the upper panel of the wings and the lower panel of the wings. Like the first embodiment, hollow continuous wings  40  are formed with a low-incident, arcuate, downwardly-sloping curve and are positioned with one end proximal to support column  1  and the other end distal to the support column. Also like the first embodiment, the continuous arcuate wings have proximal ends  45  and distal ends  46  and the proximal ends and are arranged to be in opposed relation to each other forming a structural spine in the assembly. The arcuate curvature in the continuous hollow wings begins at the distal end and increases in steepness near the proximal ends, and the height dimension of the hollow wings also increases from distal to proximal ends. In other words, the upper and lower panels  43  and  44  taper or decrease in height as they approach the distal end of the wings and form a taper terminus at distal end  46 . The actual height and length (from distal end to proximal end) of the hollow wings throughout their span is dependent on the length of the span, the weight of the structural sheet, substrate, and solar collection means, and the environment in which the assembly will be used. The same mounting means may be employed to attach hollow wings  40  to support columns  1  as in the first embodiment. The upper panel  43  of the continuous wings forms a structural deck upon which the solar radiation collection means  11  is removably affixed on the top surface. The solar collection means is preferably a flexible photovoltaic laminate that can be rolled into position on the top surface of the continuous wings and fixed thereto by any appropriate means, for example clamps, clips, pins, screws, bolts and other hold downs and fasteners that can be removed to simplify replacement of the laminate. 
         [0043]      FIGS. 6-7  illustrate the manner in which support columns  1  can be mounted to either pavement or to underground footing  21  as illustrated in  FIG. 1 . In either case, the bottom end of the support column is secured in a substantially vertical manner by means of annular restraint collar  20 , which is bolted in place on the pavement or to the top of underground footing  21  by means of bolts  31 . Collar  20  has a flat bottom plate  30  a centrally disposed upwardly extending annular collar and a plurality of angled, stabilizing flanges  29 , which assist in maintaining support column  1  in a substantially vertical manner. Collar  20  may be formed from any type of heavyweight, rigid material, for example, steel or other metal alloy. 
         [0044]    The invention is not limited to the embodiments explained above. It will be understood that many additional changes in the details, materials, steps and arrangement of parts that have been herein described and illustrated to explain the nature of the invention may be made by those skilled in the art within the principle and scope of the invention as expressed in the appended claims.