Patent Grant
10121396
The present invention is directed to lighting systems. The invention finds particular attention to light emitting diode (LED)-illuminated display signs having a mounting system, where the LED illumination system can be adapted to mount on conventional, pre-existing structures, and will be described with particular reference thereto. However, it is to be appreciated that the present exemplary embodiment is also amenable to other like applications.
Billboards are structures typically used to display graphics, menus, or other information in outdoor locations. These billboards may be free-standing (e.g., along highways, roads, etc.) or installed on other structures (e.g., on the side of a building, on top of a stadium, on the side of a truck, etc.). During daylight hours, the sign can be visible without any additional lighting structures.
Traditional billboards usually measure 14 feet by 48 feet and contain lighting structures installed on the front of the billboard structure that are directed toward the sign in order to light the sign and improve its visibility, for example, during nighttime hours or bad weather conditions.
With new technology, lighting systems, such as the LED, have been introduced.
In view of the prior aft, there remains a need for an LED billboard system that can easily and conveniently be attached to pre-existing and future billboard structures.
Disclosed in various embodiments are LED billboard systems that are useful for attachment to pre-existing billboard structures to provide LED-illuminated media and will be described with particular reference thereto. However, it can be appreciated that the LED billboard system of the present invention can be attached to other structures (e.g., walls, roofs, cars, trucks, boats, trains, airplanes, trailers, doors, etc.). Furthermore, although the light mounting system described herein is particularly directed to LED lighting system, it will be appreciated that other types of lighting systems can be used (e.g., plasma lighting systems, incandescent lighting systems, halogen lighting systems, florescent lighting systems, etc.).
In one non-limiting embodiment of the present invention, there is provided a novel structure for LED lighting systems which may be attached to billboard structures.
In another non-limiting embodiment of the present invention, there is provided an assembled LED panel unit which, when on billboard structures or on other structures, will serve to illuminate the billboard graphic from behind.
In yet another non-limiting embodiment of the present invention, there is provided a novel lighting system for illumination of billboard graphics for the purpose of illuminating the billboard graphic as needed or required, such as, but not limited to, usually in low visibility conditions (e.g., dusk, dawn, nighttime hours, mist conditions, rain conditions, snow conditions, etc.).
In still yet another non-limiting embodiment of the present invention, there is provided one or more assembled LED panel units which can easily and conveniently be attached to pre-existing billboard structures.
These and other objects, features, and advantages of the present invention will become apparent from the subsequent description taken in conjunction with the accompanying drawings.
Reference may now be made to the drawings, which illustrate various nonlimiting embodiments that the invention may take in physical form and in certain pans and arrangements of parts wherein:
An exemplary non-limiting embodiment of the present invention includes a LED billboard system, suitable for attachment to pre-existing billboard structures. Although the LED billboard system of the present invention described herein is illustrated in an exemplary embodiment as being associated with pre-existing billboard structures, the LED billboard system can also be used with pre-existing and future billboard structures and/or any non-standard size billboard structure. It can also be appreciated that the LED billboard system of the present invention can be attached to other structures (e.g., walls, roofs, cars, trucks, boats, airplanes, trailers, doors, etc.).
Referring now to the drawings wherein the showing is for the purpose of illustrating non-limiting embodiments of the invention only and not for the purpose of limiting the same,
Optionally, the LED billboard system of the present invention can be used for indoor applications (e.g., an indoor wall of a building, etc.); however, this is not required.
According to one non-limiting aspect of the present invention, an LED billboard system optionally comprises panel subunits, LED light boards, baffles, and a graphic wrap (e.g., vinyl graphic wrap, etc.); however, this is not required. Generally, the assembled LED billboard system can be attached or retrofitted to fit pre-existing billboard structures for the purpose of illuminating the billboard display as needed or required, usually in low visibility conditions (e.g., during dusk, nighttime hours, etc.).
In use, as best seen in
As best seen in
Generally, twelve assembled panel units can be assembled to fit a standard 14′ by 48′ billboard; however, this is not required. As can be appreciated, the number of assembled panel units can be varied to properly fit the structure and size of any preexisting billboard. As such, the LED billboard system panels of the present invention are adaptable to pre-existing and future billboard structures, or for used with many other structures.
In one non-limiting embodiment, the material of light board 16 is cut acrylic and aluminum; however, it can be appreciated that other or additional materials can be used. LED light strips are optionally provided thereon. As can be appreciated, the light board can be formed of other or additional materials. The LED light strips can include one or more LEDs, one or more circuit boards with control circuits, and/or one or more electrodes; however, this is not required.
In one non-limiting embodiment of the present invention, the LED light board can comprise an edge-lit configuration wherein one or more LED light strips can be arranged in a linear fashion along one edge of a light board. The back surface (i.e., the surface of the light board facing away from the overlaying cover graphic) of the light board can provide a scattering portion for the purpose of reflecting or diffusing light toward the front surface of said light board such that it is emitted in a general direction away from the billboard through the overlaying cover graphic.
The light emitted from the LEDs can be partially guided, spread across the emissions area, and redirected out of the light board perpendicular to the light board. Many types of methods achieve such function, including etched lines or dots on the light board, and wedged light boards for controlled total internal reflections with light emissions. The light from the LED entering the light board can be spread by various diffusion mechanisms such that each LED covers a certain area with light with overlapping regions between the LEDs. The structural diffusing properties of the light board can be used to provide a uniform intensity profile across the surface of the light board; however, it can be appreciated that a non-uniform intensity profile can also be formed.
Edge-lit backlight LED panels, when used, can provide several advantages, namely improved efficiency and lower cost. According to one non-limiting embodiment of the present invention, a large number of LED light boards can be used to provide the necessary backlighting for the billboard.
In another non-limiting embodiment of the present invention, the LEDs can be distributed across the back surface (i.e., the surface of the light board facing away from the overlaying cover graphic) of the light board for the purpose of providing different lighting outputs in the same direction of the light board.
In yet another non-limiting embodiment of the present invention, the LEDs can be distributed across the front surface (i.e., the surface of the light board which faces the overlaying cover graphic) of the light board. In this embodiment, the light board is not transparent or light guiding; however, this is not required. Furthermore, the light board can be a circuit board or a board with LEDs mounted thereon; however, this is not required. The arrangement of LEDs on the light board is non-limiting. The LEDs can be white, single-colored or multi-colored and can be controlled as a single unit, or can be controlled individually.
The use of LED light boards in displays provides a number of advantages over other types of lighting systems: 1) they are easily electronically controlled; 2) they last longer than incandescent lighting; 3) they radiate “cold light” meaning they generate less heat than traditional lighting systems; 4) they are energy efficient in that they consume less energy to produce brighter illuminated displays; 5) the light intensity emitted can be controlled; and/or 6) the color of lighting can be controlled and/or varied, etc. In addition, when in use, the LED light boards of the present invention can be used to permit an even distribution of light, illuminating the billboard graphic from behind; however, uneven and/or variable distribution of the lighting can also be achieved.
The light-diffusion properties provided by the LED billboard system of the present invention can optionally be such that the diffused angular distribution of light can be symmetrical in the x (i.e., the horizontal direction) and the (i.e., the vertical direction) directions; however, this is not required. As can be appreciated, the angular distributions can be different in the x and the y directions. For example, it may be desirable to have a larger horizontal viewing angle than the vertical viewing angle.
The overall dimensions of one non-limiting LED light board are about 7′ in height by about 2′ in width and about 0.25″ in depth. However, it can be appreciated that the LED light board can have other dimensions.
According to one non-limiting embodiment of the present invention, the LED light board can optionally include a light board portion, with optional scattering features provided thereon such as an etched pattern formed on one side of the light board, and a back diffuser portion. An LED light strip can optionally be placed along one edge of the light board such that the LED light outputs are coupled into the light board. The scattering features of the light board can optionally be designed to provide a spatially uniform array of light. Along two sides of the light plate perpendicular to the LED light strip, a tube (e.g., metal tube, composite tube, etc.) can be mounted to each side wherein the tubes can be connected to the LEDs and act as positive and negative electrodes. Thus, the LED light boards which form a complete panel unit can have a single pair of electrodes for connection to a single power supply; however, this is not required. The wire and the tubes can be in intimate contact such that the LED can be driven by the power supply connected to the wires; however, this is not required.
Because the LED billboard system of the present invention is comprised of one or more individual LED light boards, each LED light board can be operated independently (i.e., controlled by an external controller); however, this is not required. As such, each LED light board can be separately operated such that the color and/or intensity can be controlled by a computer creating a multitude of visual effects (e.g., flashing panels, vertical or horizontal movement of columns and rows of panels, etc.). A controller can be added to each LED light panel or to a group of neighboring LED light panels; however, this is not required. Alternatively, each LED light panel can have its own controller. The type of controller used in the LED light panel is non-limiting. The one or more controllers can be coupled to a command unit and a programmer unit; however, this is not required.
As seen in
Panel subunit 20 has a general rectangular shape. That is, two adjacent sides are greater in length than the other two adjacent sides; however, this is not required. In one non-limiting embodiment, the dimensions of a panel subunit are about 89.5″ in length by about 48″ in width and about 2.5″ in depth. However, it can be appreciated that the panel subunit can have many other types of shapes and dimensions.
The flanges for overlap 28 are provided such that two identical panel subunits can be optionally coupled together to form one panel unit (as best seen in
As best seen in
Located between the left edge and right edge of panel unit 20, there is optionally provided a substantially square channel 34 for LED wiring. In one non-limiting embodiment, channel 34 is provided parallel to the left and right edges in a position equidistant from the left edge and right edge, and extends the full length of the panel subunit; however, it can be appreciated that other distances can be used. In embodiments. When two panel subunits are coupled at their coupling edge (forming one panel unit), channel 34 is continuous across both panels; however this is not required.
Referring now to
Located at or near the left and right side edges of panel unit 20 are one or more optional flat zones where a pull-down latch or latching hook is fastened (one of which is labeled 36). Also located at or near the left and right side edges of panel unit 20 are one or more optional flat zones where PBU clips can optionally be fastened (one of this is labeled as 38). As can be appreciated, the location and quantity of flat zones 36 and 38 on the back surface 24 of panel subunit 20 can be varied.
As seen in
Located at the distal end of each panel 20a and 20b, there is optionally attached a top-bottom bracket 42 for attachment to the panel, thus preventing the baffles (not shown) from sliding off the LED light boards (not shown). In one non-limiting embodiment, the material of top-bottom bracket 42 is aluminum; however, this is not required. As can be appreciated, the top-bottom bracket can be formed of other or additional materials.
In another or alternative non-limiting embodiment, the PBU clips can optionally be substituted with slide bars or arm members (e.g., telescoping, etc.) that can be adjusted to provide a relatively infinite adjustable arrangement to angle the assembled panel units in any direction; however, this is not required. As such, the billboard display can optionally be tilted downward at any one of a variety of angles to provide better visibility to groundlevel observers. As can be appreciated, individual panels can be tilted at different angles relative to one another; however, this is not required.
In another or alternative non-limiting embodiment, the orientation of the assembled panel units can be positioned such that the light generated by the LEDs are generally directed away from traffic approaching the billboard, thereby reducing bright spots and glare to viewers approaching the billboard; however, this is not required.
As seen in
In one non-limiting embodiment, the material of baffle 46 is injection molded acrylic; however, this is not required. As can be appreciated, the baffle can be formed of other or additional materials.
The overall dimensions of one non-limiting baffle are about 28″ in length by about 24″ in width and about 2″ in depth. However, it can be appreciated that the baffle can have other dimensions. The unique structure and thickness of the baffle optionally permits air and moisture to pass through the system, but limits the amount of air passing through the baffle such that the overlaying graphic wrap is not blown away by wind, for example; however, this is not required.
In one non-limiting embodiment of the present invention, an LED light board is not required. Instead, LED light strips can be directly mounted to the baffle. The crest/valley structure of the baffle is designed to provide sufficient mechanical strength and sturdiness for the mounting operations. The LED light strips can be mounted in the valley portion of the baffle; however, this is not required. The height of the crest of the baffle can be designed such that the overlaying cover is illuminated uniformly.
In another non-limiting embodiment of the present invention, the LED light strips can be mounted on the back side of the baffle with the LEDs emitting through the baffle (i.e., between two valleys underneath a crest). As such, the illumination effect can be further modified with various spacer structures, materials, transparency, translucency, color, surface features, etc.
As seen in the non-limiting perspective illustration of
Each 4″×4″ square of 3M™ Dual Lock attached to square 18 on panel subunit 20 receives a 4″×4″ 3M™ Dual Lock square on the back surface of the light boards. As such, when the light board is engaged with the panel, the securing of the 3M™ Dual Lock and top-bottom brackets assists in preventing up or down, side-to-side, or rotational movement of the light board relative to the panel.
In one non-limiting embodiment, one or more light dispersing components may optionally be used between any layers of the assembled panel unit for the purpose of optionally absorbing, reflecting, or refracting light from the lighting source; however, this is not required.
One non-limiting advantage of the lighting system of the present invention is that in the event an LED light board fails or the bulbs go out, the LED light board can be easily and conveniently replaced via separation of the 3M™ Dual Lock.
As seen in
In one non-limiting embodiment, each LED light board requires its own 24 Volt transformer; however, this is not required. As such, four transformers are optionally mounted to the top-bottom bracket 42 of the assembled LED billboard system unit.
Referring now to
As seen in
The LED transformers 48 are optionally strung together toward the bottom of the billboard; however, this is not required.
In use, the assembled panel units are optionally hung on a pre-existing billboard's structural crossbars and a graphic wrap is optionally stretched across the partial or entire face of the billboard. When the LED panels are switched on, the billboard can be illuminated from behind.
In one non-limiting embodiment, a light sensor module can be used to control switching the LED panels on and/or off; however, this is not required. In another or alternative non-limiting embodiment, a clock-controlled module can be used to control switching the LED panels on and/or off; however, this is not required. The light sensor can also optionally be used to control brightness, color, wavelength, etc. of the one or more LED lights on a panel and/or the lights on various panels.
Traditional spotlight lighting systems on billboards provide substantially uneven light distribution across the front face of a billboard. One non-limiting advantage of the LED billboard system of the present invention is that the LED light boards used in the present invention can provide a substantially even light distribution across the partial or entire face of the billboard, or customized light distribution on various regions of the billboard; however, this is not required.
To accommodate various orientations and locations of pre-existing and future billboards, the LED billboard system, according to one non-limiting aspect of the present invention, can be provided in which the orientation/angle of the billboard, distance from the billboard to intended viewer, brightness, and positioning of additional lighting fixtures (e.g., street lights, parking lot lights, etc.) can be compensated for by adjusting the LED lighting system; however, this is not required. In this regard, different intensities of light may be required on different portions of the billboard. As such, the light panels of the LED billboard system of the present invention can be controlled individually and be optionally adjusted such that the billboard is illuminated differently at various points across its surface; however, this is not required.
Referring now to
Generally, the unique structure of LED billboard system 10 permits easy and convenient attachment or retrofitting to pre-existing billboard structures for illuminating billboard graphics as needed during low visibility conditions (e.g., at dusk, during nighttime hours, etc.).
The LED billboard system of the present invention can be modified to be implemented onto most pre-existing and future billboard structures. A typical billboard structure comprises a welded steel frame wherein panels are hung on the front side crossbars of the steel billboard structure that are generally comprised of steel and wood to provide a substantially flat shape for an overlaying graphic wrap to be displayed. However, the manufacturing costs of current billboard panels are high and the materials with which the panels are made are very heavy. The optional blow-molded polyethylene material of the panel subunits and optional aluminum material of the brackets of the LED billboard system, according to one aspect of the present invention, make the assembled panel units of the present invention considerably less expensive and dramatically lighter in weight.
In non-limiting embodiments, the assembled panel unit of the present invention is designed to provide support for optional LED light boards and baffles to protect them; however, this is not required. As can be appreciated, other or alternative types of light boards can be used.
The unique structure of the LED billboard system of the present invention permits quick and easy on-site assembly at any location where the LED billboard system is to be used. The parts and components of the LED billboard system can be optionally packed into boxes and transported to the site of installation where a crew of workers can assemble the panel units prior to installation; however, this is not required. As can be appreciated, the LED billboard system can be pre-assembled.
In one non-limiting method of installation, two identical blow-molded panels can be fastened together using side brackets. Top-bottom brackets and clips can be fastened to the panels. 3M™ Dual Lock or similar material can be used to secure four LED light boards onto each assembled panel unit. Eight baffles can be used to attach onto the four LED light boards. The twelve fully assembled panel units can be hoisted to the billboard structure and can be attached to the pre-existing billboard structure. Pull-down buckle latches can be used to secure neighboring panels side-by-side. A graphic wrap can be hung across the partial or entire face of the billboard such that when the LED light boards are switched on, the billboard can be illuminated from behind. As can be appreciated, other or additional quantities of components and methods of installation can be used.
Optional or additional installation steps can include grounding of LED electrical components, etc.
Referring now to another non-limiting embodiment of the invention as illustrated in
Traditional billboard structures can also comprise outriggers 57, steel I-beams running perpendicular to the torsion bar, and a skirting 58 running parallel to the stringer 60 or catwalk 61.
The material of stringer 60 can be angle metal; however, this is not required. As can be appreciated, other or alternative materials can be used. The stringer dimensions can be 3″ in height by 3″ in width; however, this is not required. As can be appreciated, other or alternative sizes can be used. In non-limiting embodiments, one stringer unit can consist of one or more 3″ by 3″ pieces.
In non-limiting embodiments, stringer 60 can be welded, bonded, riveted, etc. perpendicularly to the upright masts 62 of the billboard skeleton; however, this is not required. Traditional billboard structures can comprise structural crossbars running perpendicular to the upright masts. In other non-limiting embodiments, stringer 60 can be attached to the structural crossbars directly; however, this is not required.
In another non-limiting embodiment, stringers 60 can be welded, bonded, riveted, etc. substantially parallel to catwalk 61; however, this is not required. As can be appreciated, the one or more stringers can be oriented in any direction such that stringer 60 can accept and engage the PBU clip mounted to the back surface of a panel unit. The distance between the one or more stringers can be equal; however, this is not required. As can be appreciated, the spacing between parallel stringers can be unequal.
As seen in
Generally, the blow molding process includes the formation of a plastic parison 67, which can be clamped into a two-part mold apparatus 68 into which air can be blown. As air pressure rises inside the parison, the plastic is pushed out to match the mold. Once the plastic is cooled, the mold releases the plastic and the blow-molded component is released. As can be appreciated, other or alternative methods of blow molding can be used.
The LED billboard panels of the present invention can be manufactured by a plastic component manufacturer; however, this is not required.
Optional PBU clips can come pre-assembled to the blow-molded panels in their designated orientation; however, this is not required.
In one non-limiting embodiment of the present invention, three clear acrylic baffle extrusions are provided, marked here as 70, 71, and 72; however, this is not required. Baffle extrusions can optionally include a hollow tube 97 along the top surface of the baffle extrusion. The tubes on top of the baffle extrusions serve to separate, lift, or give distance between the LED panel and the graphic wrap. This distance (e.g., approximately 1-6 inches, 3 inches, etc.), is used to provide air space for light to diffuse before penetrating the translucent graphic wrap. In use, a small gap can exist between neighboring LED panels which are not illuminated, and can appear as a dark line on the illuminated billboard. Thus, the tubes also can optionally serve to diffuse light across the shadow gap between two adjacent LED panels. Any edge that intersects with the back of the printed sign panel will show up as a shadow except a tube that diffuses the light from below and has no hard upper edge.
Baffle extrusion 70 can optionally comprise a bottom plate 100, continuously connected with a vertical plate 101 extending perpendicularly from one edge of bottom plate 100, and further continuously connected with a third plate 102 parallel to the bottom plate 100 that extends partially over bottom plate 100, wherein a channel is created between the bottom plate 100, vertical plate 101, and parallel plate 102. Optionally provided on bottom plate 100 are holes through which the baffle extrusion can be mounted to a surface of a panel (e.g., blow molded panel, etc,).
Baffle extrusion center piece 71 can contain a bottom plate 103, continuously connected with a vertical plate 104 extending perpendicularly therefrom from a midline of bottom plate 103, and further continuously connected with a third plate 105 parallel to the bottom plate 103 that extends partially over bottom plate 103. As such, channels are created between bottom plate 103 and top parallel plate 105 on one or both sides of vertical plate 104. Optionally provided on bottom plate 103 are holes through which the baffle extrusion can be bolted to a surface of a blow-molded panel.
Baffle extrusion 72 can comprise a bottom plate 106, continuously connected with a vertical plate 107 extending perpendicularly from one edge of bottom plate 106, and further continuously connected with a third plate 108 parallel to the bottom plate 106 that extends partially over bottom plate 106, wherein a channel is created between the bottom plate 106, vertical plate 107, and parallel plate 108. Optionally provided on bottom plate 106 are holes through which the baffle extrusion can be mounted to a surface of a blow-molded panel.
The width of the channel in baffle extrusions 71, 71, and 72 can be the same; however, this is not required. As can be appreciated, the thickness of the channels created can be easily controlled during manufacturing to accommodate different dimensions of light boards and other like lighting systems.
Referring now to
The optional holes provided on baffle extrusions 70, 71, and 72 provide a means to secure the baffle extrusions to the front surface of panel subunit 74. In one non-limiting embodiment, bolts are used to secure the baffles to the panel subunit; however, this is not required. As can be appreciated, other means of attachment can be used.
Optionally disposed at or near the top edge 76 of panel unit 74 are hanging cables 75 for use in installation. As such, the hanging cables can be secured to the panel such that a crane can lift the panel unit by the hanging cable and hoist the panels up to the billboard structure; however, this is not required.
Referring now to
With continued reference to
Referring now to
In non-limiting embodiments, the provided panel unit is about 14′ in length by about 4′ in width; however, this is not required.
The material of side bracket 78 is metal; however, this is not required. As can be appreciated, the side bracket can be formed of other or alternative materials.
In non-limiting embodiments, the material of PBU clip 82 is metal (e.g., galvanized metal); however, this is not required. As can be appreciated, the PBU clip can be formed of other or alternative materials.
In other non-limiting embodiments, the PBU clips can come pre-assembled to the panels in their designated orientation; however, this is not required. As such, holes on the body 84 of the engagement surface of PBU clip 82 are arranged such that the PBU clips can be screwed into threaded inserts in the panel; however, this is not required.
Baffles or spacers can be added to the channels for the purpose of limiting the vibration or shaking of the LED light board or LED carpet within the extrusion channel; however, this is not required. As can be appreciated, other methods can be used to minimize movement within the extrusion channel.
Each LED light board can have LEDs on two sides, thus permitting the light to project through the graphic wrap; however, this is not required. As can be appreciated, the LED light board can have LEDs on one surface. As such, the light is evenly distributed, except for the long edges, which are often brighter. By placing tubular extrusion baffles above the bright edges, light can be dispersed at an even flow.
As best seen in
Generally, twelve assembled panel units 80 can be assembled to fit a standard 14′ by 48′ billboard; however, this is not required. As can be appreciated, the number of assembled panel units can be varied to properly fit the structure and size of any pre-existing billboard. As such, the LED billboard system panels according to one non-limiting embodiment of the present invention are adaptable to pre-existing and future billboard structures.
The gap in the stringer channel has tolerance, such that the workman on the sign and the workman operating the crane can maneuver the billboard panel onto the stringers. The sheer weight of each panel can hold the LED billboard system in place on the billboard. Furthermore, all the panels are buckled together, side by side, such that all the panels function together as a single sign unit. The weight of all twelve panels together is enough to resist moderate wind. The graphic wrap is stretched across the partial or entire billboard face and is tied down with hooks and straps at multiple points on all four sides. The hooks and straps can wrap around the front edges of the billboard, and hook securely to the backside of the billboard structure. Thus, the graphic wrap, having been stretched around the entire billboard face, secures all the billboard panels and led panels in their place. The security and stability is enough to resist even gale force winds.
Referring now to
As seen in
In non-limiting embodiments, 22 buckles can be used to complete the whole billboard; however, this is not required. As can be appreciated, the type and number of buckles/latches can be varied.
As seen in
In use, as best seen in
In one non-limiting method of installation, two identical panels can be fastened together using side brackets. Top-bottom brackets and one or more baffle can be fastened to the panels. LED light boards or LED carpet can be slid into the baffle channel of each panel unit. Three baffles can be used to create the baffle channels. The twelve fully assembled panel units can be hoisted to the billboard structure and can be attached to the pre-existing billboard structure. Buckle latches can be used to secure neighboring panels side-by-side. A graphic wrap can be hung across the partial or entire face of the billboard such that when the LED lights are switched on, the billboard can be illuminated from behind. As can be appreciated, other or additional quantities of components and methods of installation can be used.
Referring now to another non-limiting embodiment of the present invention as illustrated in
With reference now to
Baton 110 can include a base portion 112 comprising surface projection hooks extending perpendicular to the surface of the base portion 112; however, this is not required. As such, the extensions, one of which is labeled as 120, can extend upwardly and pass through slot 96 of LED carpet 90 and further through slot 116 of baton 110 such that the base 112 and baton 110 snap together or are held together by other means, thereby holding the LED carpet rigidly in place; however, this is not required. In non-limiting embodiments, the material of the baton can be clear, UV stabilized polycarbonate; however, other materials can be used. As can be appreciated, other or alternative materials can be used. One baton can be disposed at every seam of the LED carpet; however, this is not required. One baton can also be disposed at the top and bottom of the LED carpet; however, this is not required. In one non-limiting embodiment of the present invention, eighteen batons are provided for a LED carpet; however, it can be appreciated that other numbers of baton can be used.
Referring now to
With reference now to
One non-limiting advantage of the present invention is the unique structure of the LED billboard system. In this regard, the LED billboard system of the present invention is an electroluminescent billboard, separating it from traditional spot lamp billboards and digital billboards.
Another non-limiting advantage of the present invention is the location of the lighting source. When the LED panels are switched on, the billboard is illuminated from behind.
Yet another non-limiting advantage of the present invention is the LED billboard system can be used for both outdoor and indoor applications.
As can be appreciated by any non-limiting embodiment of the present invention, the LED billboard system can be adapted to fit on an existing support structure of a billboard (e.g., when a traditional billboard graphic needs to be replaced without replacement of the underlying support structure, etc.). As such, the existing support structure of a billboard may provide a plurality of structural crossbars to which the LED billboard systems of the present invention can be attached.
The LED light provided by the billboard system of the present invention can optionally provide a static image; however, this is not required. For example, by changing or varying the wavelength of light produced by the LEDs, the image could be made to appear to be moving or changing over time and, thus, be non-static.
In other or alternative non-limiting embodiments of the present invention, light reactive inks and/or dyes can be provided on the graphic cover wrap such that the ink can react with the light emitted from the light boards to provide multiple effects; however, this is not required.
In another non-limiting embodiment of the present invention, the color of the LED backlight created by the LED light boards is white; however, this is not required. As can be appreciated, the standard color of light emitted by the LED lights can be other or additional colors. The LEDs used can be single color or multi-color with multiple chips mounted on the same substrate. For example, a common colored LED has four chips: red, green, blue, and white optionally mounted in the same package and optionally separately used in order to selectively vary the color output.
The use of LED light in the present invention and present indoor/outdoor application provides several advantages. For example, the LED lights emit narrow wavelength bands of light in red, green, blue, ultraviolet, and/or infrared. The narrow wavelength of bands makes it possible to shield the ambient light of a different wavelength with optical filters, thus enhancing the image contrast. As such, the LED billboard will appear brighter, clearer, and more visible to all viewers. By adjusting the wavelength and color of light emitted, different images can optionally be created.
The LED billboard system of the present invention provides vast improvements to billboard technology manufacturing, installation and assembly, product life span, maintenance, and consumer satisfaction.
The invention has been described with reference to a number of different embodiments. It is to be understood that the invention is not limited to the exact details of construction, operation, exact materials or embodiments shown and described, as obvious modifications and equivalents will be apparent to one skilled in the art. It is believed that many modifications and alterations to the embodiments disclosed will readily suggest themselves to those skilled in the art upon reading and understanding the detailed description of the invention. It is intended to include all such modifications and alterations insofar as they come within the scope of the present invention.
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| Number | Date | Country | |
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| 62290105 | Feb 2016 | US |
