Abstract:
There is provided a low bay lighting apparatus secured to an elevated horizontal surface, the low bay lighting apparatus including a light fixture, including a modular light source configured to illuminate areas disposed beneath the light fixture, a modular power supply configured to provide power to the modular light source, and a plurality of posts disposed on planes that are perpendicular to a long side of the modular light source and on opposite ends of opposing outer side surfaces of the light fixture, and a mounting bracket secured to the elevated horizontal surface, the mounting bracket including a plurality of slots configured to mate respectively with the plurality of posts to removably secure the light fixture to the mounting bracket.

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
       [0001]    This application claims the benefit under 35 U.S.C. §119(e) of U.S. Provisional Application No. 61/072,073, filed on Dec. 8, 2010, in the United States Patent and Trademark Office, the entire disclosure of which is incorporated herein by reference for all purposes. 
     
    
     BACKGROUND 
       [0002]    1. Field 
         [0003]    The following description relates to general, commercial, and industrial illumination, and, more particularly, to a low bay lighting apparatus configured to illuminate general, commercial, and industrial environments while being serviceable on site without disconnection of electricity or removal of the low bay lighting apparatus from its affixed location. 
         [0004]    2. Description of the Related Art 
         [0005]    Low bay lighting solutions are implemented in a variety of general purpose, industrial, and commercial illumination environments, such as the illumination of parking structures, transportation garages, warehouses, assembly areas, gyms, hangars, retail spaces, showrooms, and the like. 
         [0006]    Low bay lighting applications conventionally utilize metal halide lamps. Metal halide lamps are relatively small in size and high in light output. However, metal halide lamps require extremely high pressures to operate, and generate high temperatures during operation. Thus, special fixtures are required to compensate for the extremely high pressures and temperatures. Even so, due to the high stress of operation, metal halide lamps are often subject to explosions and, thus, have the potential to cause substantial injury in the workplace or during maintenance. In addition, in order to make metal halide lamps safe to operate in everyday illumination environments, the special fixtures that metal halide lamps require necessarily sacrifice convenience and ease of installation and maintenance in order to provide the utmost safety for those who work around and maintain the metal halide lamps. 
         [0007]    In view of the various disadvantages of metal halide lamps, low bay lighting solutions are being developed that utilize light emitting diodes (LEDs). While a significant amount of LEDs are required to equal the lighting output of metal halide lamps, techniques in optimizing LEDs for use in low bay and other illumination applications have been successful. In addition, implementations of LEDs in low bay lighting applications have been found to be much safer than implementations of metal halide lamps in low bay lighting applications. Further, low bay lighting applications that implement LEDs consume much less power than a typical metal halide lamp. 
         [0008]    However, low bay lighting applications implementing LEDs still suffer from many drawbacks. For example, related low bay lighting applications that implement LED technology do not take into account heat buildups caused by boundary conditions created within the lamp that creating high thermal resistances. 
         [0009]    Further, conventional low bay fixtures designed to implement LEDs are one-piece sealed units. These one-piece sealed units make component or LED replacement extremely difficult without compromising seals and ratings. Compromise of those seals and ratings often serve to invalidate the warranty of the fixture. 
         [0010]    In addition, conventional low bay fixtures implementing LEDs are generally unable to be maintained in the field and must be removed to be serviced. Moreover, the subsequent removal of the conventional low bay fixtures implementing LEDs requires an electrical supply to be disconnected or shut down. Thus, in order to service a single related low bay fixture, electricity supplied to a numerous amount of perfectly functioning fixtures must be terminated. This termination of electricity can sometimes require a significant amount of time and participation of multiple individuals communicating over mobile devices in order to efficient service the low bay fixture. 
       SUMMARY 
       [0011]    In one general aspect, a low bay lighting apparatus secured to an elevated horizontal surface is provided, the low bay lighting apparatus including a light fixture, including a modular light source configured to illuminate areas disposed beneath the light fixture, a modular power supply configured to provide power to the modular light source, and a plurality of posts disposed on planes that are perpendicular to a long side of the modular light source and on opposite ends of opposing outer side surfaces of the light fixture, and a mounting bracket secured to the elevated horizontal surface, the mounting bracket including a plurality of slots configured to mate respectively with the plurality of posts to removably secure the light fixture to the mounting bracket. When being serviced, the light fixture is configured to freely hang from one portion of the plurality of slots respectively via one portion of the plurality of posts disposed at one of the opposite ends of the opposing outer side surface of the light fixture. 
         [0012]    The general aspect of the apparatus may further provide that the modular light source includes a plurality of lighting modules, each of the lighting modules comprising a plurality of light emitting diodes (LEDs). 
         [0013]    The general aspect of the apparatus may further provide a plurality of spring clips configured to secure the modular light source to the light fixture and release the modular light source from the light fixture when the plurality of slots of the mounting bracket are mated respectively with the plurality of posts of the light fixture. 
         [0014]    The general aspect of the apparatus may further provide that the modular light source is secured from and released to an outer periphery of the light fixture. 
         [0015]    The general aspect of the apparatus may further provide a plurality of mating locking clips configured to prevent the plurality of spring clips from being operated to release the modular light source from the light fixture when the mating locking clips are inserted into the spring clips. 
         [0016]    The general aspect of the apparatus may further provide that the one portion of the plurality of slots includes a plurality of inverted T slots disposed on one end of opposing outer side surfaces of the mounting bracket, the plurality of inverted T slots being configured to accept the one portion of the plurality of posts through a vertically slanted portion of the inverted T slots, enable slidable adjustment and resting of the one portion of the plurality of posts on a horizontal portion of the inverted T slots, and support the one portion of the plurality of posts to enable the light fixture to freely hang from the horizontal portion of the inverted T slots. 
         [0017]    The general aspect of the apparatus may further provide that the plurality of slots includes a plurality of straight slots disposed on an opposite end of the opposing outer side surfaces of the mounting bracket from the plurality of inverted T slots, the plurality of straight slots being configured to accept an other portion of the plurality of posts through a vertical opening of the straight slots, the vertical opening being disposed at a horizontal edge portion of the other end of the opposing outer side surfaces of the mounting bracket, the other portion of the plurality of posts being disposed on an other one of the opposite ends of the opposing outer side surfaces of the light fixture from the one portion of the plurality of posts, and enable slidable adjustment and resting of the other portion of the plurality of posts on a horizontal portion of the straight slots, and support the other portion of the plurality of posts to enable the light fixture to be supported horizontally by the plurality of slots. 
         [0018]    The general aspect of the apparatus may further provide that the light fixture and the mounting bracket further include one or more locking fastener receivers configured to accept a fastener to prevent the plurality of posts from sliding in the plurality of slots, the locking fastener receivers of the light fixture having a location that corresponds with a location of the locking fastener receivers of the mounting bracket. 
         [0019]    The general aspect of the apparatus may further provide a watertight hand-operated power cord configured to supply the modular power supply with electricity, and a watertight hand-operated connection cord configured to connect the modular light source to the modular power supply, and enable a disconnection of the modular light source from the modular power supply while modular power supply is being supplied with electricity. 
         [0020]    The general aspect of the apparatus may further provide that the watertight hand-operated power cord, the watertight hand-operated connector cord, the modular power supply, and the modular light source are configured to be water tight to a submergible rating of IP67. 
         [0021]    The general aspect of the apparatus may further provide that the modular light source is further configured to be removed without terminating an electricity supply to the modular power source. 
         [0022]    In another general aspect, a low bay lighting apparatus is provided, the low bay lighting apparatus including a mounting bracket configured to hang from an elevated horizontal position, the mounting bracket including a plurality of slots, a light fixture configured to hang from the mounting bracket, the light fixture including a plurality of posts configured to mate with the plurality of slots of the mounting bracket to secure the light fixture to the mounting bracket. When a portion of the plurality of posts is not mated with a corresponding portion of the plurality of slots, an other portion of the plurality of posts is configured to rotate in a corresponding other portion of the plurality of slots, and support the light fixture in a freely hanging position that is substantially perpendicular to a position of the mounting bracket. 
         [0023]    The general aspect of the apparatus may further provide a plurality of modular light emitting diode (LED) boards disposed in the light fixture, the plurality of modular LED boards including a plurality of spring clips configured to attach the modular LED boards to the light fixture without using tools. 
         [0024]    The general aspect of the apparatus may further provide that the mounting bracket further includes a plurality of louvers configured to convect heat generated by the light fixture into ambient air outside of the low bay lighting apparatus. 
         [0025]    The general aspect of the apparatus may further provide a modular power supply configured to supply power to the plurality of modular LED boards, the modular power supply and the plurality of modular LED boards being sealed and watertight, a watertight hand-operated power cord configured to connect the modular power supply to a source of electricity, and a plurality of watertight hand-operated connector cords configured to supply the plurality of modular LED boards with power from the modular power supply. The watertight power cord and the plurality of watertight connector cords are further configured to prevent water damage to the plurality of modular LED boards and the modular power supply, and allow connection to and disconnection from the modular power supply and the plurality of modular LED boards without using tools or termination of the source of electricity. 
         [0026]    The general aspect of the apparatus may further provide a plurality of mating locking clips configured to lock the spring clips when inserted in the spring clips. 
         [0027]    In another general aspect, there is provided a low bay lighting apparatus secured to an elevated horizontal surface, the low bay lighting apparatus including a lighting module removably secured to a light fixture, the lighting module including one or more light emitting diodes (LEDs), posts disposed on opposite ends of opposing outer side surfaces of the light fixture, a mounting bracket secured to the elevated horizontal surface, the mounting bracket including slots configured to mate respectively with the posts to removably secure the light fixture to the mounting bracket, and spring clips configured to secure the lighting module to the light fixture and release the lighting module from the light fixture. 
         [0028]    The general aspect of the apparatus may further provide that the spring clips are further configured to secure the lighting module from and release the lighting module to an external periphery of the light fixture. 
         [0029]    The general aspect of the apparatus may further provide mating locking clips configured to mate with portions of the spring clips disposed in an internal periphery of the light fixture to prevent operation of the spring clips to release the lighting module to an external periphery of the light fixture. 
         [0030]    The general aspect of the apparatus may further provide that the mating locking clips mate with the portions of the spring clips disposed in the internal periphery of the light fixture when the light fixture is freely hanging from a pair of the slots respectively via a pair of the posts disposed at one of the opposite ends of the opposing outer side surface of the light fixture. 
         [0031]    Other features and aspects may be apparent from the following detailed description, the drawings, and the claims. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0032]      FIG. 1  illustrates a plan view example of a mounting bracket of a low bay lighting apparatus. 
           [0033]      FIG. 2  illustrates a plan view example of a light fixture of a low bay lighting apparatus having dummy plates installed. 
           [0034]      FIG. 3  illustrates a plan view example of a light fixture of a low bay lighting apparatus having lighting modules installed. 
           [0035]      FIG. 4  illustrates a plan view example of a low bay lighting apparatus. 
           [0036]      FIG. 5  illustrates a side view example of a low bay lighting apparatus. 
           [0037]      FIG. 6  illustrates another plan view example of a low bay lighting apparatus. 
           [0038]      FIG. 7  illustrates a sectional view example of a low bay lighting apparatus. 
           [0039]      FIG. 8  illustrates additional plan view examples of a low bay lighting apparatus. 
           [0040]      FIG. 9  illustrates additional plan view examples of a low bay lighting apparatus. 
           [0041]      FIG. 10  illustrates another plan view example of a low bay lighting apparatus. 
           [0042]      FIG. 11  illustrates another plan view example of a low bay lighting apparatus. 
           [0043]      FIG. 12  illustrates another plan view example of a low bay lighting apparatus. 
       
    
    
       [0044]    Throughout the drawings and the detailed description, unless otherwise described, the same drawing reference numerals will be understood to refer to the same elements, features, and structures. The relative size and depiction of these elements may be exaggerated for clarity, illustration, and convenience. 
       DETAILED DESCRIPTION 
       [0045]    The following description is provided to assist the reader in gaining a comprehensive understanding of the methods, apparatuses, and/or systems described herein. Accordingly, various changes, modifications, and equivalents of the methods, apparatuses, and/or systems described herein will be suggested to those of ordinary skill in the art. The progression of processing steps and/or operations described is an example; however, the sequence of steps and/or operations is not limited to that set forth herein and may be changed as is known in the art, with the exception of steps and/or operations necessarily occurring in a certain order. Also, descriptions of well-known functions and constructions may be omitted for increased clarity and conciseness. 
         [0046]    A low bay lighting apparatus  21  includes a mounting bracket  1  and a light fixture  10 . The mounting bracket  1  and the light fixture  10  may be fabricated from any one of a number of different powder-coated metals.  FIG. 1  illustrates a plan view example of the mounting bracket  1  of the low bay lighting apparatus  21 .  FIG. 2  illustrates a plan view example of the light fixture  10  of the low bay lighting apparatus  21  having dummy plates  16  installed.  FIG. 3  illustrates a plan view example of the light fixture  12  of the low bay lighting apparatus  21  having lighting modules  18  installed.  FIGS. 4-12  illustrate various examples of the low bay lighting apparatus  21 , which includes the mounting bracket  1  and the light fixture  12 . 
         [0047]    Referring to  FIG. 1  and portions of  FIGS. 4-12 , the mounting bracket  1  of the low bay lighting apparatus may include flush mount fastener receivers  2 , mounting slots  3 , a removable pendent pipe receiver  4 , pendent pipe receiver fasteners  5 , louvers  6 , and mounting bracket locking fastener receivers  7 , inverted T slots  8 , and straight slots  9 . 
         [0048]    The mounting bracket  1  may be secured to any one of a ceiling, a mounting plate, a metal beam, an electrical box, and other equivalent elevated horizontal mounting surface on which a low bay lighting apparatus  21  would be mounted. 
         [0049]    The flush mount fastener receivers  2  may be disposed on a flat top portion of the mounting bracket  1 . The flush mount fastener receivers  2  may be used to mount the mounting bracket  1  flush against any elevated horizontal surface on which flush mounting of the mounting bracket  1  of a low bay lighting apparatus  21  may be achieved. The flush mount fastener receivers  2  are sealed shut unless flush mounting is required, in which case the flush mount fastener receivers  2  may be opened to receive fasteners to secure the mounting bracket to the surface being used for flush mounting. 
         [0050]    The mounting slots  3  are patterned in a circular formation in a depressed area of the mounting bracket  1  that is surrounded by the flat top portion of the mounting bracket  1 . The mounting slots  3  may enable mounting of the mounting bracket  1  to well-known ceiling electrical boxes. 
         [0051]    The removable pendent pipe receiver  4  may be disposed at a center portion of the depressed area of the mounting bracket  1  that is surrounded by the mounting slots  3 . When not in use, the removable pendent pipe receiver  4  may be removed by unfastening the pendent pipe receiver fasteners  5 , which serve to secure the removable pendent pipe receiver  4  to the mounting bracket  1 . The removable pendent pipe receiver  4  may enable mounting of the mounting bracket  1  to a threaded pipe or the like. A screw and a screw receiver (not shown) are provided in the removable pendent pipe receiver  4  in order to secure the threaded pipe. 
         [0052]    The louvers  6  are provided on slanted portions of the mounting bracket  1  that surround the flat top portion of the mounting bracket  1 . The louvers  6  may allow convection to ambient air of whatever heat might be generated in the low bay lighting apparatus  21 . 
         [0053]    The mounting bracket locking fastener receivers  7 , the inverted T slots  8 , and the straight slots  9  may be provided on opposing plates that hang vertically from the slanted portions. The inverted T slots  8  are disposed opposing each other at one end of the opposing plates. The inverted T slots  8  have an upside-down T form with a vertical portion of the upside-down T form being slanted away from the louvers  6 . 
         [0054]    The straight slots  9  are disposed opposing each other on the edge of the opposing plates at opposite ends of the opposing plates from the inverted T slots  8 . The straight slots  9  have an opening that faces outward from the mounting bracket  1  and away from the inverted T slots  8 . The mounting bracket locking fastener receivers  7  are disposed opposing each other on the ends of the opposing plates that include the straight slots  9 . 
         [0055]    Referring to  FIGS. 2 and 3  and portions of  FIGS. 4-12 , the light fixture  10  may include a safety hook  11 , posts  12 , light fixture locking fasteners and fastener receivers  13 , a power supply compartment  14 , power supply compartment securing fasteners and fastener receivers  15 , dummy plates  16 , lighting module fasteners and fastener receivers  17 , and lighting modules  18 . 
         [0056]    Referring to  FIGS. 2-12 , the posts  12  of the light fixture  10  are provided on the light fixture  10  at opposite ends of opposing outer side surfaces of the light fixture  10 . The posts  12  on one opposing side of the light fixture  10  may be oriented facing away from the posts on the other opposing side of the light fixture  10 . The posts  12  of the light fixture  10  are provided to mate with the respective inverted T slots  8  and straight slots  9  of the mounting bracket  1 , thus serving to mate the light fixture  10  to the mounting bracket  1 . 
         [0057]    The safety hook  11  may be provided at an end of the light fixture  10  that corresponds with an end of the mounting bracket  1  that includes the inverted T slots  8 . A safety wire (not shown) may attach the safety hook  11  to a secure position (not shown) to provide an added level of security with respect to the mating of the light fixture  10  to the mounting bracket  1 . 
         [0058]    The light fixture locking fasteners and fastener receivers  13  are located at an opposite end from the safety hook  11 , on opposing outer portions of the light fixture  10 , and to correspond with the mounting bracket locking fastener receivers  7  of the mounting bracket  1 . The light fixture locking fastener and fastener receivers  13  may be used to lock a mating position of the light fixture  10  when mated to the mounting bracket  1 . In other words, the light fixture locking fastener  13  may be inserted in the light fixture locking fastener receivers  13  and, subsequently, in the mounting bracket locking fastener receivers  7  to lock a mating position of the light fixture  10  when mated to the mounting bracket  1 . 
         [0059]    Specifically, when the posts  12  of the light fixture  10  are inserted into the respective inverted T slots  8  and straight slots  9  of the mounting bracket for mating purposes, the posts  12  are left unsecured due to the horizontal straight slots  9  and the horizontal portion of the inverted T slots  8 . Further, the straight slots  9  are open at an end of the mounting bracket  1 . Thus, if the posts  12  resting in the inverted T slots  8  are not positioned in the inverted T slots  8  near to the respective end of the mounting bracket  1 , the posts  12  that are disposed in the straight slots  9  may subsequently fall out of the straight slots  9 , resulting in an unwanted sudden rotation of the light fixture  10  due to an unwanted sudden rotation of the posts  12  disposed in the inverted T slots  8 . 
         [0060]    When the light fixture locking fasteners  13  are inserted into the light fixture locking fastener receivers  13  and the mounting bracket locking fastener receivers  7 , the posts  12  resting in the inverted T slots  8  are in a locked position at the portion of the inverted T slots  8  nearest the respective end of the mounting bracket  1 . Further, the posts  12  that are disposed in the straight slots  9  are prevented from falling out of the straight slots  9 , and the posts  12  disposed in the inverted T slots are prevented from unwanted sudden rotation. Thus, a mating position of the light fixture  10  in the mounting bracket  1  is locked and maintained. 
         [0061]    However, when the light fixture locking fasteners  13  are removed from the light fixture locking fastener receivers  13 , the posts  12  resting in the inverted T slots  8  may be slid in the inverted T slots  8  away from the respective end of the mounting bracket  1  purposefully in order to place the low bay lighting apparatus  21  in a maintenance orientation to hang freely, as is shown in  FIG. 9 . This may provide a low bay lighting apparatus  1  that allows maintenance without being overly concerned about the stability of the apparatus during maintenance and/or installation. 
         [0062]    Specifically, the posts  12  disposed in the straight slots  9  fall out of the straight slots  9  when the posts  12  resting in the inverted T slots  8  are slid away from the respective end of the mounting bracket  1 . Thus, the posts  12  resting in the inverted T slots  8  rotate, which results in the rotation of the light fixture  10  into a substantially vertical position that substantially forms a right angle with the mounting bracket  1 . In this position, the low bay lighting apparatus  21  can be serviced. 
         [0063]    A standard tool may be employed to remove the light fixture locking fasteners  13  from the light fixture locking fastener receivers  13 , and, subsequently, place the low bay lighting apparatus  21  in the above-referenced maintenance orientation, as is shown in  FIG. 9 . 
         [0064]    In addition, the light fixture  10  may be secured from the maintenance orientation by rotating the posts  12  disposed in the inverted T slots  8  and the light fixture  10  upwards until the posts  12  disposed in the inverted T slots  8  can be slid to enable the posts  12  disposed opposite the inverted T slots  8  to rest in the straight slots  9 . The light fixture locking fasteners  13  may then be inserted in the light fixture locking fastener receivers  13  to lock a position of the light fixture  10  with respect to the mounting bracket  1 , and, thus, lock a position of the low bay lighting apparatus  21 . 
         [0065]    Further, referring to  FIGS. 2 ,  3 , and  7 , a power supply compartment  14  is provided in the light fixture  2  that is configured to store a power supply  20 . The power supply  20  is secured in the power supply compartment  14  using power supply compartment securing fasteners and fastener receivers  15 . The power supply compartment securing fasteners  15  may be removed in order to access the power supply  20  for maintenance purposes. The power supply  20  is also removable for maintenance or replacement. 
         [0066]    Referring to  FIGS. 2 and 7 , the light fixture  10  may include dummy plates  16  that are installed in the place of lighting modules  18  when the light that would accompany a lighting module  18  is not needed. Referring to  FIG. 4 , the light fixture  10  may include dummy plate fastener receivers  19  into which fasteners can be inserted to secure a dummy plate  16  to the light fixture  10 . 
         [0067]    Referring to  FIGS. 3 ,  4 , and  9 - 12 , the light fixture  10  may include lighting modules  18  that can be removed or installed according to required lighting needs. The lighting modules  18  may be adapted for any type of lighting technology such that the lighting technology is acceptable for embodiment in the lighting modules  18 , and the lighting modules  18  generated from the lighting technology are subsequently acceptable for embodiment in the low bay lighting apparatus  21 . 
         [0068]    One general aspect may provide that the lighting modules  18  are a collection of light emitting diodes (LEDs) disposed on a printed circuit board, an “LED brick”, or the like. These aspects may provide a low bay lighting apparatus  21  that directs the principle light from the lighting modules  18  downward in an efficient manner to a desired illumination area. A clear top plastic cover may also be provided on a lighting surface of the lighting modules  18  to protect components of the lighting modules  18  and to function as a lens to manage light emitted from LEDs and direct the light emitted from the LEDs in a desirable manner. 
         [0069]    Referring to  FIGS. 8-12 , the low bay lighting apparatus  21  may include a watertight power cord  22  that connects the low bay lighting apparatus  21  to a source of electricity. The watertight power cord  22  is connected to the power supply  20  via a watertight hand-operated electrical connector (not shown). The power supply  20  is further connected to the lighting modules  18  via watertight hand-operated electrical connectors (not shown). These watertight hand-operated electrical connectors may further allow installation and maintenance without tools or concern of electric shock. Further, the lighting modules  18  and the power supply  20  may be watertight as well. 
         [0070]    All modular components of the low bay lighting apparatus  21 , including the lighting modules  18 , the power supply  20 , the watertight power cord  22 , and other miscellaneous wires, cords, and connectors, may be sealed to be watertight to a submergible rating of IP67. In addition, as technological advances occur, the low bay lighting apparatus  21  may be enabled to support revised, improved, and/or more efficient versions of the above-referenced modular components. These aspects may allow for easy installation, maintenance, and retrofitting compared with conventional low bay lighting units. 
         [0071]    Further, in concert with the louvers  6  of the mounting bracket  1 , the lighting modules  18  may be designed in order to provide efficient convection to ambient air of heat generated by the lighting modules  18 . The lighting modules  18  may be further designed to promote efficient convection of heat to ambient air by being constructed of heat conducting material or by including heat sinks  25 , shown in  FIGS. 3 and 9 , directly coupled to the lighting modules  18 . 
         [0072]    Referring to  FIGS. 2 and 7 , the lighting modules  18  may be secured to the light fixture  10  using lighting module fasteners and fastener receivers  17 . The lighting modules  18  secured to the light fixture by the lighting module fasteners  17  may be removed by orienting the light fixture  10  in the above-referenced maintenance orientation, utilizing a common tool to remove the lighting module fasteners  17  from the lighting module fastening receivers  17 , and disconnecting the lighting modules  18  being removed from the watertight hand-operated electrical connectors (not shown) provided to connect the lighting modules  18  to the power supply  20 . 
         [0073]    Referring to  FIGS. 10-12 , the lighting modules  18  may be secured to the light fixture  10  using spring clips  23 . After connecting the lighting modules  18  to the power supply  20  via the watertight hand-operated electric connectors, the spring clips  23  may be used to physically couple the lighting modules  18  to the light fixture  10  without the use of tools. Further, the spring clips  23  can be pressed to remove the lighting modules  18  without placing the low bay lighting apparatus  21  in maintenance orientation. The lighting modules  18  may then be disconnected from the power supply  20  via hand and without concern of electric shock by disconnecting the lighting modules  18  from the watertight hand-operated electrical connectors. In addition, referring to  FIG. 12 , mating locking clips  24  may be inserted into the spring clips  23  to provide a secure lock and prevent unwanted removal or theft of the lighting modules  18 . 
         [0074]    A number of examples have been described above. Nevertheless, it will be understood that various modifications may be made. For example, suitable results may be achieved if the described techniques are performed in a different order and/or if components in a described system, architecture, device, or circuit are combined in a different manner and/or replaced or supplemented by other components or their equivalents. Accordingly, other implementations are within the scope of the following claims.