Apparatus, method and system for retrofitting lighting system with upward lighting

Abstract

A free-standing luminaire, driver and attachment assembly has at least a first luminaire, an attachment beam defining a driver receiving cavity, and a driver assembly configured to fit within the driver receiving cavity. The first luminaire includes a single row of light emitting diodes and at least a first set of optics configured to provide horizontal and vertical expansion of at least a portion of the light emitted from the single row of light emitting diodes. The vertical distribution of light is rebounded from the reflective visor.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is a national phase application, which claims priority and the benefit of International Patent Application PCT / US2024 / 038011 filed on July 15, 2024, which is related to and claims the benefit of U.S. Provisional Application Serial No. 63 / 578,481 filed on August 24, 2023 and the contents of each application are hereby incorporated by reference in their entirety. Technical Field

[0003] The present disclosure generally relates to improvements in luminaire design related to beam cutoff sharpness. More specifically, the present disclosure relates to providing an LED luminaire for upward lighting of baseball stadiums (as well as for other large area uses, rail and shipping yards, parking lots, and building illumination, for example) having a sharp light cutoff at the lower edge of the composite light beam projected therefrom, which reduces the angle covered by the transition from "full light" to "no light" of the light projected from the luminaire. This allows for relatively high illumination levels in the vertical space above the field by having a sharp cutoff just above but relatively close to the players on the field. The present disclosure also relates to a luminaire that may require fewer light sources that generate less heat, thereby reducing cost. Background Art

[0004] Lighting a baseball field requires both illuminating the playing surface of the field and providing "uplighting" (i.e., lighting the air space above and / or adjacent to the field). Field lighting is typically provided in accordance with at least minimum acceptable standards, such as those set forth in RP-6-15 of the Illuminating Engineering Society (IES). U.S. Patent No. 10,267,491 discusses the need to consider the level of air lighting.

[0005] The lighting industry also knows that lighting that is otherwise satisfactory and meets the illumination standards for field lighting can still cause problems when upward lighting is considered. As discussed in U.S. Patent No. 7,976,198, light sources can cause glare and reduce the ability of certain players to play due to the mounting position and aiming angle of the light source. For example, providing upward lighting but causing reflections on surfaces near the fixture or internal glow from the fixture can cause unwanted glare in the eyes of a batsman or other player. This glare can obscure the ball and reduce the player's ability to visually track the ball. U.S. Patents Nos. 7,976,198 and 9,402,292 both discuss some considerations for determining when upward lighting is necessary, when glare may be perceived, how to adequately design a lighting system to provide upward lighting while mitigating glare, and the like.

[0006] Furthermore, it is well known in the field of lighting design that improving lighting and reducing costs are major drivers and can result in many excellent designs that are optimized for specific primary functions, but sometimes lead to the detriment of secondary functions. For example, older designs with less control tend to be able to provide adequate lighting for aerial spaces (although generally with less control over perceived glare) because the baffles and the like are not precise enough - especially for HID lighting. In contrast, new designs, such as new LED luminaires, exhibit enhanced beam control and, while well suited to the target area, no longer have enough uncontrolled light available for aerial lighting. This is in addition to the fact that there are still some important areas (old or new technology) that lack sufficient progress. For example, there has been little progress in reducing the number of poles or lamp mounting locations for wide-area lighting applications - such progress can reduce costs.

[0007] Therefore, the one-to-one replacement approach in the residential lighting retrofit market, such as taking out the old light source and installing the new light source without other changes, is not practical for the professional lighting retrofit market.

[0008] Some luminaires are also not suitable for upward lighting from low or mid-mount positions because multiple rows of LEDs can create problems with creating a sharp light cutoff near the edge of the composite beam.

[0009] It would therefore be desirable to provide an apparatus, method, and system for retrofitting existing lighting systems to provide uplighting having desirable attributes, such as glare control, at a reduced cost. Summary of the invention

[0010] A freestanding luminaire, driver, and attachment assembly according to an embodiment of the present disclosure may include at least a first luminaire, an attachment beam defining a driver receiving cavity, and a driver assembly configured to fit within the driver receiving cavity. The first luminaire may include a single row of light emitting diodes, and at least a first set of optical devices configured to provide horizontal and vertical expansion of at least a portion of light emitted from the single row of light emitting diodes.

[0011] According to another embodiment of the present disclosure, an LED lamp may include a rear fixing plate, wherein a heat sink is connected to the rear fixing plate; an LED board configured to be connected to the rear fixing plate; at least a first optical device holder; at least a first optical device member configured to be held adjacent to the LED board by the first optical device holder; a window; and a front frame configured to capture the window, the first optical device member, the first optical device holder, and the LED board adjacent to the rear fixing plate. The LED board may include a single row of LEDs and the heat sink may include a predetermined number of heat sinks, the LED board may include a predetermined number of LEDs, and the ratio of the predetermined number of LEDs to the predetermined number of heat sinks is in the range of 2.0 to 3.0. In a specific embodiment, the ratio may be in the range of 2.4 to 2.6 (e.g., about 2.5).

[0012] According to another embodiment of the present disclosure, an optical device member may include a central plate portion, a front lens portion defining an upper undulating boundary and a lower undulating boundary, and a rear LED receiving portion including a plurality of cones, each cone defining an elongated cavity. The front lens portion may be angled with the central plate portion to redirect light upward relative to the plurality of cones.

[0013] The details of one or more examples of the present disclosure are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the present disclosure will be apparent from the description and drawings, and from the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The following drawings are used to illustrate specific examples of the present disclosure and therefore do not limit the scope of the present disclosure. The drawings are not necessarily drawn to scale, but the examples may include the scales shown and are intended to be used in conjunction with the description in the following detailed description, where the same reference numerals represent the same elements. Examples of the present disclosure will be described below in conjunction with the drawings.

[0015] FIG. 1 shows a prior art system of an exterior lighting system that includes a pole to which LED (light emitting diode) lamps are attached for illuminating a playing field and the area above the playing field. As shown, a baseball field or other playing field may be illuminated by the prior art system. It is contemplated that some prior art systems may employ HID (high intensity discharge) lamps in other applications.

[0016] FIG. 2 shows a prior art uplighting fixture that may be attached to one or more of the poles in FIG. 1 .

[0017] 3 is a perspective view of the four optics components used in the fixture of FIG. 2 shown alone.

[0018] Figure 4 is a front perspective view of single and dual uplighting fixtures and cross arm assemblies that may be attached to a pole according to various embodiments of the present invention.

[0019] Figure 5 yes Figure 4 A rear perspective view of the components in FIG. 1 , wherein the vertical beam member has been removed, revealing an LED driver assembly mounted inside the vertical beam member for powering the upward lighting fixture.

[0020] Figure 6 yes Figure 5 A magnified front perspective view of a single uplighting fixture and cross arm assembly in FIG, with the windows removed revealing the five sets of optics and the optics holder covering the LEDs mounted on the LED board.

[0021] Figure 7 Shows Figure 6 A single uplighting fixture in which the optics have been removed, revealing an aperture designed to receive the rear portion of the optics and the LED itself.

[0022] Figure 8 Shows Figure 7 A single uplighting fixture in Figure 1 with the optics holder removed. The LED board can be clearly seen.

[0023] Fig. 9 is with Figure 6 A front perspective view of a single uplighting fixture showing the LED board alone, a single instance of an optics holder, and a single instance of an optics member.

[0024] Fig.10 It shows more clearly Fig. 9 An enlarged front perspective view of an optics component and an optics holder.

[0025] Fig.11 yes Fig.10 A top cross-sectional view of .

[0026] Fig.12 It is shown by itself Fig.10 Front perspective view of an optical device component.

[0027] Fig.13 yes Fig.12 Front view of the optical device components.

[0028] Fig.14 yes Fig.12 Rear perspective view of the optical device components.

[0029] Fig.15 yes Fig.14 Rear view of the optical device components.

[0030] Fig.16 yes Fig.12 Right side view of the optical device components.

[0031] Fig.17 yes Fig.14 A top view of an optical device component.

[0032] Fig.18 yes Fig.17 Magnified view of the central lens portion of the optics component.

[0033] Fig.19 is shown separately Fig.10 Front perspective view of the optics holder.

[0034] Fig. 20 yes Fig.19 Rear perspective view of the optics holder.

[0035] Fig.21 is a side schematic diagram showing an optical model of the new optic component, illustrating how it bends and refracts light toward a reflective sunshade that reflects the light upward.

[0036] Fig. 22 is a side view showing more generally how the new optics assembly bounces light off the reflective bezel to provide upward illumination.

[0037] Fig.23 Various baseball trajectories are shown, indicating that the maximum angle required for uplighting from an uplighting fixture at 25 feet above the ground is approximately 45.0 degrees from the horizontal plane.

[0038] Fig.24 The vertical and horizontal beam expansion achievable using the new optics components is shown. DETAILED DESCRIPTION

[0039] The following detailed description is illustrative in nature and is not intended to limit the scope, applicability, or configuration of the technology or system described herein in any way. In contrast, the following description provides some practical illustrations of examples for implementing the technology or system described herein. Those skilled in the art will recognize that many of the examples have a variety of suitable alternatives.

[0040] In order to further understand the present disclosure, specific exemplary embodiments according to the present disclosure will be described in detail. The drawings will be frequently mentioned in this specification. Reference numerals will be used to indicate certain components in the drawings. Unless otherwise specified, the same reference numerals will be used to indicate the same components throughout the drawings. In addition, similar reference numerals (e.g., 702, 802, 902, 1002, 1102) will be used to indicate similar components or functions between embodiments. Reference numerals with letters after them (e.g., 100, 100a) can represent identical or similar features that are symmetrical to each other, etc.

[0041] Regarding terminology, unless otherwise explicitly stated, terms such as “device,” “equipment,” “element,” “component,” “part,” “portion,” “structure,” “assembly,” and “member” may be used interchangeably in the singular or plural in a convenient manner herein and will not depart from the aspects of the present disclosure or have a limiting effect on the aspects of the present disclosure.

[0042] Additionally, terms such as "having," "including," "with," and the like, or forms thereof, should be interpreted as open ended without limiting the components of a structure that may be added to the structure. The terms "substantially linear," "linear array," or forms thereof, should be interpreted as including arrays such as LED articles that follow a scan path that is at least partially straight or slightly curved such that a tangent at one end of the array forms an angle of less than 40 degrees with a tangent at the other end of the array.

[0043] In addition, many terms are used for reasons of convenience or explanation, but they should not be considered as limiting the contents described herein. For example, as in the lighting industry, the terms "lamp" and "lighting fixture" are used interchangeably herein. Neither term is intended to represent any specific limitation beyond what is described herein.

[0044] As another example, "ballast" and "driver" are mentioned herein; while both are power regulating devices of lighting technology, the former is used herein for HID light sources, while the latter is used for LED light sources. However, it should be noted that where aspects of the present disclosure are applied to other types of light sources (e.g., laser diodes), the corresponding terminology for the power regulating device may be different. It should be generally understood that various embodiments of the present disclosure are directed to lighting system modifications and therefore any specific reference to a light source type or power regulating device should be given its broadest interpretation.

[0045] For example, the ballast may include a magnetic ballast, an electronic ballast, and generally any AC power conditioning device, while the driver may include a universal driver (i.e., a simple DC power conditioning device), a so-called smart driver (i.e., a complex AC power conditioning device that may include programmable functions, self-healing components, active feedback loops, etc.), or something in between. All of the above possibilities are considered to be within the scope of the present disclosure.

[0046] Finally, with respect to terminology, reference may be made herein to terms such as "ray," "beam," "beam pattern," "beam shape," "compound beam," "beam design," and the like. All of these terms refer to the light projected from a lighting fixture. It should be understood that the properties of light are complex, and the terms herein may generally describe the shape of the light projected from a lighting fixture to a target area, or the intensity in the airspace above the target area, or the general direction of the light as it leaves the fixture, etc. While specific descriptions and illustrations are provided herein, it should be understood that none of these terms, descriptions, or illustrations should be considered to encompass all lighting issues that may be encountered during a retrofit situation; however, it should also be noted that all of these are well-known terms and are well understood in the lighting arts.

[0047] Overview

[0048] As mentioned above, the present disclosure is directed to lighting system modification. More specifically, modification of a dedicated lighting system is disclosed.

[0049] Such a dedicated lighting system is shown in FIGS. 1 and 2 . Here, a sports lighting system 50 is depicted that is designed to illuminate a sports field 52 and certain portions of the air space above the field. As can be seen in FIG. 1 , downward lighting is provided by LED lamps 54. It is contemplated that other systems may employ HID (high intensity discharge) lamps for downward lighting. In any case, upward lighting may not initially be provided and it may be desirable to provide upward lighting at a reasonable cost. In some lighting systems as described in FIG. 1 , one or more LED upward lighting fixtures 60 (which may have been attached to pole 56) may have been provided.

[0050] Such an LED uplighting fixture 60 is shown in Figure 2 by itself. The fixture 60 is attached to a cross arm (not clearly shown in Figures 1 and 2) extending from the rod 56 by an adjustable support bracket 62 (e.g., a knuckle), which is attached to a heat sink 64 having a high density of fins 66 (e.g., 50 fins) for dissipating the heat generated by powering the LEDs. The heat sink 64 is in turn connected to a rear mounting plate 68. LEDs 70 (which may be 80 XP-L2 type LEDs available from Cree, Inc. of Durham, North Carolina, arranged in a compact array) are shown covered by a transparent window 72, which is captured to the rear mounting plate 68 by fasteners or the like. Ribs 74 or darkened portions help reduce interior glow, perceived glare and / or backlighting. A reflective surface 76 is provided on the visor to help provide uplighting, while a front edge 78 of the visor helps provide light cutoff. Visor side portions 80 help provide glare control.

[0051] 1 and 2, it will be appreciated that wiring is routed internally through the rod 56, into the cross arm, through the adjustable support frame 62 and to each of the light fixtures 54, 60 that may be arranged in an array. Alternatively, wiring may be routed externally relative to the beam, rod, cross arm, etc., such as through conduits from a power source to the light fixtures (including uplighting, etc.). This is a sufficient description of a specialized lighting system that may be adapted and benefit from aspects of the present disclosure, although additional background information may be found in U.S. Patent Nos. 6,250,596, 7,600,901, 8,163,993, 8,337,058, and 8,770,796, among others.

[0052] 3 shows a quad optic element 82, so called because the rear cone 84 has a cavity (not shown) for receiving four LEDs. The front lens portion 86 is substantially parallel to the center plate portion 88. This increases the cost of the fixture, as will be discussed in more detail later in this document.

[0053] Exemplary embodiments contemplate systems, devices, and methods for upgrading lighting systems in a manner that provides adequate upward lighting while reducing costs. These exemplary embodiments will now be described herein, utilizing various aspects of the general examples already described.

[0054] Standalone luminaires, drivers and accessories

[0055] Now it will be from Figure 4 and Figure 5 Discussion begins with a freestanding light fixture, driver, and attachment assembly 100, 100a constructed in accordance with an embodiment of the present disclosure.

[0056] Such an assembly 100, 100a may include at least a first light fixture 200, an attachment beam 102 defining a driver receiving cavity 104, and a driver assembly 106 configured to fit within the driver receiving cavity 104. The first light fixture 200 includes a single row of light emitting diodes 202 (see Fig. 9 ) and at least a first set of optical devices (see Figure 6 The first set of optical devices is configured to provide horizontal and vertical expansion of at least a portion of the light emitted from the single row of light emitting diodes 202 in a manner that will be described in further detail later in this document.

[0057] Still refer to Figure 4 and 5, the attachment beam 102 can take the form of a vertical beam 102a that defines a front face 108 that defines a driver receiving cavity 104. Other configurations are also considered to be within the scope of the present disclosure. For example, the attachment beam can extend horizontally and its top surface can define a driver receiving cavity, etc. For the assembly 100 (which can be referred to as a single freestanding light fixture, driver, and attachment assembly), it can include a shorter cross arm 110 extending perpendicular to the front face 108, and the first light fixture 200 can be a single light fixture disposed in front of the front face 108.

[0058] For the assembly 100a (which may be referred to as a dual freestanding light fixture, driver, and attachment assembly), a longer cross arm 110a may be provided that extends through the front face 108 of the vertical beam 102a on a first side 112 and a second side 112a in a direction parallel to the front face 108. The cross arms may take on other lengths and configurations, such as diagonal, etc. A first light fixture 200 may be provided at a first end of the longer cross arm 110a and a second light fixture 200a (which may be configured similarly or identically to the first light fixture 200) may be provided at a second end of the longer cross arm 110a.

[0059] like Figure 6 As shown, the adjustable support bracket 62 (e.g., a knuckle) can connect the first lamp 200 and / or the second lamp 200a to the shorter cross arm 110 and the longer cross arm 110a. The driver assembly 106 can include a front mounting plate 114, which is configured to be mounted to the front face 108 of the vertical beam 102a (see FIG. 3); a driver attachment plate 116, which extends vertically from the rear surface of the front mounting plate 114, and at least a first driver 118, which is attached to the driver attachment plate 116. The rear surface of the front mounting plate 114 can define a seal receiving groove 120, wherein a seal 122 is disposed in the seal receiving groove to provide a watertight seal between the plate and the vertical beam.

[0060] Although two drivers are shown for assembly 100, only one driver may be needed due to only one lamp. Exemplary drivers that may be used include INVENTRONICS model ESM-240S150DT (27 watt) drivers, etc. The various plates of the driver assembly may be made of steel, aluminum, etc.

[0061] Reference now Figures 4 to 6 The assembly 100, 100a may also include a top plate 124 covering the vertical beam 102a, and a bottom terminal plate 126 disposed at the bottom of the vertical beam 102a for powering the lamp in the manner discussed herein above with reference to FIGS. 1 and 2.

[0062] Additionally, the top mounting bracket assembly 128 and the bottom mounting bracket assembly 128a may be attached to the vertical beam 102a to allow the freestanding light fixture, driver, and attachment assembly 100, 100a to be easily attached to the pole of the lighting system in the field. In some embodiments of the present disclosure, the top mounting bracket assembly 128 and the bottom mounting bracket assembly 128a are identically constructed (within a reasonable manufacturing tolerance of + / -.010 inches), but this is not required.

[0063] See also Figure 5 and Figure 6 , the bottom mounting bracket assembly 128a may include a top mounting plate 130 including a first mounting ear 132 and a second mounting ear 132a (the ears may be symmetrical about a vertical plane). Similarly, a bottom mounting plate 130a having the same construction as the top mounting plate 130 may be provided.

[0064] A first side U-shaped bracket 134 may be provided to connect the top mounting plate to the bottom mounting plate at the first mounting ear, and a second side U-shaped bracket 134a may be provided to connect the top mounting plate to the bottom mounting plate at the second mounting ear. Although not shown, it is understood that the top mounting bracket assembly 128 and the bottom mounting bracket assembly 128a may be used with a pair of sheet metal straps that are perforated to correspond with the holes of the side U-shaped brackets. Fasteners and nuts connect the sheet metal straps to the side U-shaped brackets, which are rotated to loosen or tighten the sheet metal straps around the pole for holding the freestanding light fixture, driver, and attachment assembly 100, 100a to the pole in a fixed manner.

[0065] Lighting

[0066] Focus Figures 6 to 8 , we will now discuss an LED lamp 200 as previously discussed herein, which may replace the previous uplighting lamp discussed herein with respect to FIGS. 1 and 2 (having many or all of the same features). The LED lamp 200 may include a rear mounting plate 204, with a heat sink 205 connected to the rear mounting plate 204; an LED board 206 (see Figure 8 and 9 ), which is configured to be connected to the rear fixing plate 204 (e.g., via the fastener receiving hole 207); at least the first optical device holder 208; at least the first optical device structure 300, which is configured to be held adjacent to the LED board 206 by the first optical device holder 208; the window 210 (see Figure 4 ); and a front frame 210 configured to capture the window 210, the first optical device member 300, the first optical device holder 208 and the LED board 206 adjacent to the rear fixing plate 204.

[0067] See also Figure 5 and Figure 8 , the LED board 206 may include a single row 212 of LEDs, and the heat sink 205 may include a predetermined number of heat sinks 214. More specifically, the LED board 206 includes a predetermined number of LEDs 216, and a ratio of the predetermined number of LEDs 216 to the predetermined number of heat sinks 214 is in the range of 2.0 to 3.0 (e.g., 2.5). Figure 5 and Figure 8 In the specific embodiment shown, the LED board includes 50 LEDs (which may be the same type of LEDs discussed earlier in this document) or less, and the heat sink includes 20 heat sinks or less. The optical devices to be discussed herein allow for the use of fewer LEDs, thereby reducing costs, and since less heat needs to be dissipated, fewer heat sinks are also required, further reducing costs. Other ratios, numbers of LEDs and heat sinks may be used in other embodiments of the present disclosure, depending on the application, etc.

[0068] like Fig. 9 As shown, the LED board 206 includes a plurality of pairs of LEDs 218 that are spaced apart from each other by a minimum distance 220 of .060 inches, and each pair of the plurality of pairs of LEDs is spaced apart from each other by a maximum distance 222 of .518 inches. In other embodiments of the present disclosure, these distances may be different. In different embodiments of the present disclosure, these distances may provide appropriate optics and heat dissipation.

[0069] Now turn to Fig.10 , 19 20, it can be observed that the optics holder 208 includes a central raised section 224, which defines a plurality of lens receiving holes 226 and a plurality of LEDs and optical surround ribs 229. In addition, the optics holder has a first lower section 226, which is configured to be attached to the rear fixing plate through the fastener receiving hole 207. Two such lower sections 226, 226a can be provided. A plurality of posts 228 can extend forward from the central raised section 224, which are assembled into the post receiving holes 302 of the optics member 300, thereby holding it in place before the window and front frame are assembled on top of it. The posts can be heat-soldered pins, but not necessarily. The optics holder can be made of a suitable thermoplastic.

[0070] Optical device components

[0071] Now turn to Fig.11 , it can be seen that the optical device member 300 can include a plurality of front lens portions 304, which are disposed in front of each of the plurality of pairs of LEDs 218. In addition, the optical device member 300 can include a plurality of rear cones 306, each of which defines an elongated cavity 308 (see Fig.14 and 15), the elongated cavity is configured to receive one of the plurality of paired LEDs 218. The perimeter of the cone 306 can fit into the (complementarily shaped) lens receiving hole 226.

[0072] Now refer to Figures 12 to 18 Discuss an optic member 300 that may be provided as a replacement part. The optic member 300 may have a central plate portion 310 and one or more front lens portions 304 that define an upper relief boundary 312 and a lower relief boundary 314.

[0073] As previously described, a rear LED receiving portion 315 may be provided that includes a plurality of cones 306, each of which defines an elongated cavity 308 for receiving an LED. Each of the plurality of cones 306 may be at least partially prismatic (e.g., may have a flat or nearly flat inclined surface 316). In addition, the elongated cavity may be at least partially formed by a central raised section 318 and two deeper end sections 320 (see also FIG. 1 ). Fig.11 The transition point between the deeper end section and the central raised section can be aligned with the center of the LED.

[0074] like Fig.13 and 17 As best shown in FIG. 1 , the upper undulating border 312 and the lower undulating border 314 define a plurality of narrowed portions 322 that define a pair of side portions of a pair of LED lens portions 304a disposed in front of one of the plurality of cones 306. This pattern is repeated.

[0075] exist Fig.16 , the central plate portion 310 may define a flat surface 324, and the front lens portion 304 may be in a plane perpendicular to the flat surface 324 (eg, Fig.16 A line 326 is defined in a plane (i.e., a plane) from a highest point 328 to a lowest point 330 of the front lens portion 304, thereby forming an acute angle 332 in the plane with the flat surface 324. In some embodiments, the acute angle 332 is in a range of 5.0 degrees to 15.0 degrees (or, more specifically, 9.0 degrees to 11.0 degrees or about 10.0 degrees in certain embodiments of the present disclosure).

[0076] refer to Fig.17 and 18 , the front lens portion 304 includes a forward-facing undulating surface 334 (which may be referred to as a corrugation) that defines a higher frequency 336, while the upper undulating boundary 312 or the lower undulating boundary 314 defines a frequency 338 that is lower than the high frequency 336. Fig.18 As best shown in FIG. 1 , the forward-facing undulations are composed of a series of convex surfaces 340 and a series of concave surfaces 342, the concave surfaces having a smaller angular range and radius than the convex surfaces. Fig.16As shown, the forward facing undulating surface 334 is convex in a plane perpendicular to the flat surface 324 of the center panel portion 310. Other configurations and dimensions are possible in other embodiments of the present disclosure.

[0077] It is noted that the optic member or lens may be used for applications other than uplighting, and may be made from a variety of materials including glass, acrylic, polystyrene, polycarbonate, silicone, and the like.

[0078] Industrial Applicability

[0079] In practice, one or more of the following parts, assemblies or sub-assemblies are initially offered at the first point of sale in an original equipment manufacturer (OEM) context or as replacement or alternative parts in an aftermarket context: stand-alone lamp, driver and accessory assembly; circuit board and heat sink assembly; loose wiring end bracket; LED lamp and optics member or lens, etc.

[0080] During the retrofit process or initial installation, various approaches may be employed. For example, if the prior installation lacked upward lighting, a freestanding fixture, driver, and attachment assembly may be attached to a pole or other structural member using sheet metal straps as previously described herein. If the prior system already had upward lighting as shown in FIGS. 1 and 2 , the prior LED fixture may be disconnected (may be both electrically and mechanically) from the adjustable support frame or the interface between the adjustable support frame and a structural member such as a cross arm, and a new LED fixture constructed in accordance with the embodiments discussed herein may be connected (may be both electrically and mechanically) to the adjustable support frame or interface.

[0081] Alternatively or in addition to these steps, the freestanding light fixture, driver and attachment assembly may be attached to a pole or other structural member using sheet metal straps as previously described.

[0082] Once installed, LED lamps according to embodiments of the present disclosure can provide suitable upward lighting to the user at half the wattage (60% or more of the previous lamp of FIG. 2 ) and at a reduced initial purchase cost.

[0083] Fig.21 is a side schematic diagram showing an optical model of the new optical component, showing how it bends and refracts light downward toward a reflective baffle that reflects light upward, and Fig. 22 is a side view showing more generally how the new optical component bounces light off the reflective bezel to provide upward lighting.

[0084] Fig.23 Various baseball trajectories are shown which indicate that the maximum angle required for upward lighting from an uplighting fixture at 25 feet above the ground is approximately 45.0 degrees from the horizontal plane.

[0085] Today, new optics components more efficiently refract light to bounce off reflective bezels and inventions recognize the required upward lighting, so fewer LEDs are needed to achieve the required upward lighting. Fig.24 As shown, the horizontal and vertical angles of the dual tilted or angled optical elements provide similar performance to the quad optical elements, with only a slight reduction in horizontal light intensity and a slight increase in vertical light intensity. Therefore, fewer LEDs are required, reducing costs, and fewer heat sinks are required, further reducing costs.

[0086] It should be appreciated that, according to examples, certain actions or events of any of the techniques described herein may be performed in a different order, may be added, combined, or omitted entirely (e.g., not all of the actions or events described are necessary to practice the technique). In addition, in some examples, actions or events may be performed simultaneously, such as through multithreading, interrupt processing, or multiple processors, rather than sequentially.

[0087] Various examples of the present disclosure have been described. Any combination of the described systems, operations, or functions is contemplated. These and other examples are within the scope of the following claims.

Claims

1. A stand-alone lamp, driver and attachment assembly comprising: At least the first lamp; an attachment beam defining a driver receiving cavity; as well as a driver assembly configured to fit within the driver receiving cavity; The first lamp comprises a single row of light emitting diodes; and at least a first set of optical devices, wherein the first set of optical devices is configured to provide horizontal expansion and vertical expansion of at least a portion of light emitted from the single row of light emitting diodes.

2. The freestanding light fixture, driver and attachment assembly of claim 1, wherein: The attachment beam is a vertical beam that defines a front face that defines the driver receiving cavity.

3. The freestanding light fixture, driver and attachment assembly of claim 2, further comprising a cross arm extending perpendicular to the front face, and wherein the first light fixture is a single light fixture disposed forward of the front face.

4. The freestanding light fixture, driver, and attachment assembly of claim 2, further comprising a cross arm extending across the front face on a first side and a second side in a direction parallel to the front face.

5. The freestanding light fixture, driver and attachment assembly of claim 4, wherein: The first light fixture is disposed at a first end of the cross arm, and the freestanding light fixture, driver, and attachment assembly further includes a second light fixture disposed at a second end of the cross arm.

6. The freestanding light fixture, driver, and attachment assembly of claim 2, further comprising a cross arm attached to the attachment beam; and an adjustable support bracket connecting the first light fixture to the cross arm.

7. The freestanding light fixture, driver and attachment assembly of claim 2, wherein: The driver assembly includes a front mounting plate configured to be mounted to the front face of the vertical beam, a driver attachment plate extending vertically from a rear surface of the front mounting plate, and at least a first driver attached to the driver attachment plate.

8. The freestanding light fixture, driver and attachment assembly of claim 7, wherein: The rear surface defines a seal receiving groove, and the freestanding light fixture, driver, and attachment assembly further includes a seal disposed in the seal receiving groove.

9. The freestanding light fixture, driver, and attachment assembly of claim 2, further comprising a top plate covering the vertical beam and a bottom terminal plate disposed at a bottom of the vertical beam.

10. The freestanding light fixture, driver, and attachment assembly of claim 2, further comprising a top mounting bracket assembly and a bottom mounting bracket assembly attached to the vertical beam.

11. The freestanding light fixture, driver and attachment assembly of claim 10, wherein: The top mounting bracket assembly and the bottom mounting bracket assembly are identically constructed.

12. The freestanding light fixture, driver and attachment assembly of claim 10, wherein: The bottom mounting bracket assembly includes a top mounting plate, the top mounting plate includes a first mounting ear and a second mounting ear; and a bottom mounting plate that is constructed identically to the top mounting plate.

13. The freestanding light fixture, driver and attachment assembly of claim 12, wherein: The bottom mounting bracket assembly includes a first side U-shaped bracket connecting the top mounting plate to the bottom mounting plate at the first mounting ear and a second side U-shaped bracket connecting the top mounting plate to the bottom mounting plate at the second mounting ear.

14. An LED lamp, comprising: a rear mounting plate, wherein a heat sink is connected to the rear mounting plate; an LED board configured to be connected to the rear fixing plate; at least a first optics holder; at least a first optics member configured to be held adjacent to the LED board by the first optics holder; window; as well as a front frame configured to capture the window, the first optics member, the first optics holder, and the LED board adjacent the rear mounting plate; Wherein, the LED board includes a single row of LEDs and the heat sink includes a predetermined number of heat sinks, the LED board includes a predetermined number of LEDs, and a ratio of the predetermined number of LEDs to the predetermined number of heat sinks is in a range of 2.0 to 3.

0.

15. The LED lamp according to claim 14, wherein: The LED board includes 50 LEDs or less, and the heat sink includes 20 fins or less.

16. The LED lamp according to claim 14, wherein: The LED board includes a plurality of pairs of LEDs spaced apart from each other by a minimum distance of .060 inches, and each pair of the plurality of pairs of LEDs spaced apart from each other by a maximum distance of .518 inches.

17. The LED lamp according to claim 14, wherein: The optics holder includes a central raised section defining a plurality of lens receiving holes and a plurality of LED board contact ribs.

18. The LED lamp of claim 17, further comprising at least a first lower section configured to be attached to the rear mounting plate.

19. The LED lamp of claim 17, further comprising a plurality of posts extending forwardly from the central raised section.

20. The LED lamp according to claim 16, wherein: The optics member includes a plurality of front lens portions, and each of the plurality of front lens portions is disposed in front of each of the plurality of pairs of LEDs.

21. The LED lamp according to claim 20, wherein: The optic member includes a plurality of rear cones each defining an elongated cavity configured to receive one of the plurality of pairs of LEDs.

22. An optical device component, comprising: Center plate section; a front lens portion defining an upper relief boundary and a lower relief boundary; as well as a rear LED receiving portion including a plurality of cones each defining an elongated cavity; wherein the front lens portion is angled relative to the central panel portion to redirect light upward relative to the plurality of cones.

23. The optical device component according to claim 22, wherein: The center plate portion defines a plurality of post receiving apertures.

24. The optical device component according to claim 22, wherein: Each of the plurality of pyramids is at least partially prismatic.

25. The optical device component according to claim 22, wherein: The elongated cavity is at least partially defined by an elongated bottom plate having a central raised section and two deeper end portions 26. The optical device component according to claim 22, wherein: The upper undulating boundary and the lower undulating boundary define a plurality of narrowed portions defining a pair of side portions of a pair of LED lens portions disposed in front of one of the plurality of cones.

27. The optical device member according to claim 22, wherein: The central plate portion defines a flat surface, and the front lens portion defines, in a plane perpendicular to the flat surface, a highest point, a lowest point, and a line connecting the highest point and the lowest point, the line forming an acute angle with the flat surface.

28. The optical device component according to claim 27, wherein: The acute angle is in the range of 5.0 degrees to 15.0 degrees.

29. The optical device component according to claim 28, wherein: The acute angle is in the range of 9.0 degrees to 11.0 degrees. 29a. An optic member according to claim 29, wherein the acute angle is approximately 10.0 degrees + / - .25 degrees.

30. The optical device member according to claim 27, wherein: The front lens portion includes a forward-facing relief surface defining a higher frequency, and the upper relief boundary or the lower relief boundary defines a frequency lower than the higher frequency.

31. The optical device member according to claim 30, wherein: The forward facing undulating surface is convex in a plane perpendicular to the flat surface.

32. The optical device member according to claim 30, wherein: The forward facing undulating surface includes a series of convex surfaces and a series of concave surfaces that are smaller than the convex surfaces.

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