Patent Publication Number: US-11391446-B2

Title: Suspended luminaire

Description:
REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation of co-pending U.S. patent application Ser. No. 16/355,004, filed Mar. 15, 2019, which claims the benefit of prior-filed, U.S. Provisional Patent Application No. 62/643,941, filed Mar. 16, 2018, the entire contents of which are incorporated by reference. 
    
    
     FIELD 
     The present disclosure relates to a luminaire and more specifically to an overhead luminaire. 
     BACKGROUND 
     Suspended luminaires may be supported away from a ceiling surface in various ways. 
     SUMMARY 
     In one embodiment, a luminaire includes a first portion, a second portion, and a third portion. The first portion extends along a first axis and supports a first light emitter. The second portion is laterally spaced from the first portion and extends along a second axis that is oriented parallel to the first axis. The second portion supports a second light emitter. The third portion is disposed laterally between the first portion and the second portion and extends along a third axis that is oriented parallel to the first axis. The third portion supports at least one current driver for driving at least one of the first light emitter and the second light emitter. 
     In another embodiment, a luminaire includes a first portion, a second portion, and a third portion. The first portion includes a first end and a second end. A first axis extends between the first and second ends. The first portion supports a first light emitting diode. The second portion includes a first end and a second end. A second axis extends between the first and second ends and is oriented parallel to the first axis. The second portion supports a second light emitting diode and is laterally spaced from the first portion. The third portion is disposed between the first portion and the second portion. The third portion includes a first end and a second. A third axis extends between the first end and the second end and is parallel to the first axis. The third portion is spaced apart from the first portion and the second portion. The third portion also supports a first current driver that is in electrical communication with the first light emitting diode and a second current driver that is in electrical communication with the second light emitting diode. A first bracket is coupled to a first end of the first portion, a first end of the second portion, and a first end of the third portion. A second bracket is coupled to the second end of the first portion, a second end of the second portion, and a second end of the third portion. 
     In yet another embodiment, a luminaire includes a first portion, a second portion, and a third portion. The first portion extends along a first axis and supports a first light emitter. A second portion is laterally spaced from the first portion and extends along a second axis that is parallel to the first axis. The second portion supports a second light emitter. The third portion is disposed between the first portion and the second portion and extends along a third axis that is parallel to the first axis. The third portion supports at least one current driver to drive at least one of the first light emitter and the second light emitter. A cover is removably coupled to the third portion using fasteners. The fasteners are rotatable between a first position where the cover is coupled to the third portion and a second position where the cover is decoupled from the third portion. The second position is ninety degrees form the first position. 
     Other aspects of the disclosure will become apparent by consideration of the detailed description and accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1A  is an upper perspective view of a luminaire. 
         FIG. 1B  is an upper perspective view of the luminaire of  FIG. 1A  including upwardly oriented light emitting devices. 
         FIG. 2  is a lower perspective view of the luminaire of  FIG. 1A . 
         FIG. 3  is an exploded view of the luminaire of  FIG. 1A . 
         FIG. 4  is a lower view of the luminaire of  FIG. 1A  with one lens removed. 
         FIG. 5  is an enlarged view of  FIG. 4 , illustrating light emitting devices. 
         FIG. 6  is a cross-sectional view of the luminaire of  FIG. 1A , viewed along section  6 - 6 . 
         FIG. 7A  is a first end view of the luminaire of  FIG. 1A   
         FIG. 7B  is a second end view of the luminaire of  FIG. 1A . 
         FIG. 8  is a perspective view of the luminaire of  FIG. 1A  including a wire guard. 
         FIG. 9  is a perspective view of the luminaire of  FIG. 1A  including a sensor. 
         FIG. 10  is a perspective view of a luminaire of  1 A including a battery. 
         FIG. 11  is a perspective view of a luminaire according to another embodiment. 
         FIG. 12  is a lower view of the luminaire of claim  11 . 
         FIG. 13  is a cross-sectional view of the luminaire of  FIG. 11 , viewed along section  13 - 13 . 
         FIG. 14  is an upper perspective view of a luminaire according to another embodiment. 
         FIG. 15  is a lower perspective view of the luminaire of  FIG. 14 . 
         FIG. 16  is a lower view of the luminaire of  FIG. 14 . 
         FIG. 17  is a cross sectional view of the luminaire of  FIG. 14 , viewed along section  17 - 17 . 
         FIG. 18  is an upper perspective view of a luminaire including brackets. 
     
    
    
     DETAILED DESCRIPTION 
     Before any embodiments are explained in detail, it is to be understood that the disclosure is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The disclosure is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. Use of “including” and “comprising” and variations thereof as used herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Use of “consisting of” and variations thereof as used herein is meant to encompass only the items listed thereafter and equivalents thereof. Unless specified or limited otherwise, the terms “mounted,” “connected,” “supported,” and “coupled” and variations thereof are used broadly and encompass both direct and indirect mountings, connections, supports, and couplings. 
     In general, the present disclosure relates to a suspended light fixture or luminaire. The luminaire includes a first portion housing a light engine and a second portion housing one or more light emitting devices powered by the light engine. The first portion and the second portion are spaced apart from one another so that the light engine and the light emitters are housed in different sections of the luminaire. 
     As shown in  FIGS. 1A-2 , a luminaire  10  includes distinct portions. In the illustrated embodiment, the luminaire  10  includes a first tray or first portion  14  extending along a first axis  16 , a second tray or second portion  18  extending along a second axis  20 , and a channel or third portion  22  extending along a third axis  24 . Each of the portions  14 ,  18 ,  22  is substantially rectangular in shape and extends between a first end  32  and a second end  34  of the luminaire  10 . The axes  16 ,  20 ,  24  are oriented parallel to one another. 
     In the illustrated embodiment, each portion  14 ,  18 ,  22  is laterally spaced apart from the other two portions. In other words, none of the portions  14 ,  18 ,  22  are directly fixed to each other. The first portion  14  is disposed on one side of the luminaire  10  and the second portion  18  is disposed on another side of the luminaire, such that the first portion  14  and the second portion  18  are spaced apart from one another. The third portion  22  is disposed between the first and second portions  14 ,  18 . The third portion  22  is spaced apart from the first and second portions  14 ,  18 , and a gap  26  is disposed between the third portion  22  and the first portion  14  and another gap  26  is disposed between the third portion  26  and the second portion  18 . 
     As shown in  FIG. 4 , the first portion  14  includes a channel  30  that extends along the axis  16 . In the illustrated embodiment, the channel  30  extends substantially between the first end  32  and the second end  34  of the luminaire  10 . The channel  30  is defined by a support surface  38  and two side surfaces  40 . The support surface  38  is disposed between the side surfaces  40  so that the side surfaces  40  are spaced apart from one another. In the illustrated embodiment, the support surface  38  is substantially rectangular in shape and extends along the axis  16 . Each side surface  40  extends the length of the support surface  38  along the axis  16 . 
     As shown in  FIG. 6 , each side surface  40  is oriented obliquely with respect to the support surface  38 . In the illustrated embodiment, the side surfaces  40  are oriented at an obtuse angle with respect to the support surface  38 . In other words, the side surfaces  40  are inclined away from the axis  16  ( FIG. 1 ). The side surfaces  40  are substantially rectangular in shape and include a pocket  46  that opens away from the channel  30  (i.e., an opening to the pocket  46  faces away from the channel  30 ). In other embodiments, the openings of the pocket  46  may face the channel  30 . Faces of the pockets  46  are inclined with respect to the side surfaces  40 . A first face  47  is substantially parallel with respect to the support surface  38  and a second surface  48  is inclined with respect to the support surface  38 . 
     Returning to  FIG. 4 , light emitting devices  42  are coupled to the support surface  38 . In the illustrated embodiment, the light emitting devices  42  are light emitting diodes (LEDs). In the illustrated embodiment, the LEDs  42  are aligned in strips. In other words, an elongated strip of electrically and mechanically connected LEDs are coupled to the support surface  38  and extend in a direction parallel to the axis  16 . In the illustrated embodiment, three strips of LEDs  42  are coupled to the support surface  38  within the first portion  14 ; although in other embodiments, fewer or more LED strips  42  may be coupled to the support surface  38 . Each LED strip  42  includes holes  50  which receive fastening members  54  (e.g., threaded screws). The fastening members  54  removably couple each LED strip  42  to the support surface  38 . 
     As shown in  FIGS. 4 and 6 , the second portion  18  is substantially similar to the first portion  14 . The second portion  18  includes a channel  56  defined by a support surface  58  and side surfaces  62 , which are oriented in a substantially similar manner as the support surface  58  and the side surfaces  62 . Each side surface  62  includes a pocket  66  that opens away from the channel  56  (i.e., an opening to the pocket  66  faces away from the channel  56 ); although in other embodiments, the openings of the protrusions may face the channel  56 . 
     LED strips  42  are coupled to the support surface  58  of the second portion  18 . In the illustrated embodiment, an equivalent number of LED strips  42  are coupled to the support surface  58  and the support surface  38  (e.g., three LED strips  42 ). Although in other embodiments, fewer or more LED strips  42  may be coupled to the support surface  58 , and fewer or more LED strips may be positioned on the support surface  58  of the second portion  18  than the support surface  38  of the first portion  14 . 
     As shown in  FIG. 6 , a first lens  70  is coupled to the first portion  14  and a second lens  72  is coupled to the second portion  18 . The lenses  70 ,  72  are substantially similar in shape and the first lens  70  may be coupled to the second portion  18  and the second lens  72  may be coupled to the first portion  14 . In the illustrated embodiment, the lenses  70 ,  72  have a curved profile with a smooth internal face proximate the channel  30 ,  56  and a ridged outer face proximate an external environment. 
     The lenses  70 ,  72  include a bent portion  86  disposed on either side of the lenses  70 ,  72 . In the illustrated embodiment, the bent portions  86  are formed as protuberances that bend outwardly, toward the external environment. The pockets  46 ,  66  are substantially similar in shape to the protuberances  86 , which allows one of the pockets  46 ,  66  to engage or nest with one of the associated protuberances  86 . Each lens  70 ,  72  snaps onto one of the portions  14 ,  18 . 
     Contact between the pockets  46 ,  66  and the respective surfaces of the protuberances  86  limit movement of the lens  70 ,  72  relative to the portion  14 ,  18  in directions that are non-parallel to the axes  16 ,  20  (e.g., in a vertical direction as shown in  FIG. 6 ). In the illustrated embodiment, the nesting arrangement forces direct contact between the pockets  46 ,  66  and the respective surfaces of the protuberances  86  while the lens  70 ,  72  is coupled to the respective portion  14 ,  18 . The pockets  46 ,  66  and protuberances  86  directly contact each other and engage each other, e.g., by a snap-fit. 
     The snap fit between the lens  70 ,  72  and the portion  14 ,  18  facilitates quick coupling of the lenses  70 ,  72  and portions  14 ,  18  together. A user may also remove the lens  70 ,  72  by applying a force proximate either bent portion  86  of the lens  70 ,  72  to move the bent portion  86  away from the pocket  46 ,  66 , thereby allowing the lens  70 ,  72  to be separated from the respective portion  14 ,  18 . 
     As shown in  FIGS. 4 and 6 , the third portion  22  includes a channel  98  that extends along the axis  24 . In the illustrated embodiment, the channel  98  extends substantially between the first end  32  and the second end  34  of the luminaire  10 . The channel  98  is defined by a support surface  102  and two side surfaces  106 . The support surface  102  is disposed between the side surfaces  106  so that the side surfaces  106  are spaced apart from one another. The support surface  102  is substantially rectangular in shape and extends along the axis  24 . Each side surface  106  extends the length of the support surface  102  along the axis  24 . 
     Light emitting devices  126  are coupled to the support surface  102  and disposed in an external environment (i.e., the light emitting devices  126  and the control housing  122  are coupled to opposite faces of the support surface  102 ). The light emitting devices  126  are light emitting diodes (LEDs). The light emitting devices  126  on the support surface  102  provide uplighting in a direction opposite the light output from the first portion  14  and the second portion  18 . In the illustrated embodiment, the LEDs  126  are aligned in strips. In other words, an elongated strip of electrically and mechanically connected LEDs are coupled to the support surface  102  and extend in a direction parallel to the axis  24 . In the illustrated embodiment, four strips of LEDs  126  are coupled to the support surface  102 ; although in other embodiments, fewer or more LED strips  126  may couple to the support surface  102 . Each LED strip  126  receives fastening members (e.g., threaded screws—not shown). The fastening members removably couple each LED strip  126  to the support surface  102 . 
     As shown in  FIG. 6 , the side surfaces  106  include an oblique portion  110 , an orthogonal portion  114 , and a parallel portion  118 . Each of the portions  110 ,  114 ,  118  is substantially planar surfaces. The oblique portion  110  is adjacent the support surface  102  and is disposed obliquely with respect to the support surface  102 . The orthogonal portion  114  is adjacent the oblique portion  110  and disposed orthogonally with respect to the support surface  102 , and obliquely with respect to the oblique portion  110 . The parallel portion  118  is adjacent the orthogonal portion  102  and is disposed parallel with respect to the support surface  102  and orthogonally with respect to the orthogonal surface  114 . 
     A control housing  122  is coupled to the support surface  102  and disposed within the channel  98 . The control housing  122  houses various control elements (not shown) that are in electrical communication with each other and/or electrical elements disposed outside of the control housing  122 . For example, the control elements are in electrical communication with the LEDs  126 . The control elements may also sensors  127  (e.g., motion sensors or occupancy sensors), which may be positioned on the luminaire  10  ( FIG. 9 ). The sensors  127  may be positioned at various locations on the luminaire  10 , including on a cover  138  of the third portion  22 . Sensors  127  may also be coupled to an end cap  130 ,  134 , for example, protruding from the end cap away from the third portion. The control elements may include current control, which drives a current output by the control elements. 
     The cover  138  is coupled to the third portion  22  proximate the parallel portions  118  and encloses the control housing  122 . The cover  138  is removable from the lower surface of the third portion  22 , facilitating access to the components in the third portion  22  for servicing or replacement purposes. A fastening member  142  is disposed at either end of the third portion  22  (i.e., proximate the first end  32  and the second end  34 ) and is used to couple the cover  138  to the third portion  22 . In the illustrated embodiment, the fastening members  142  are quarter-turn screws. Each quarter-turn screw  142  is rotatable ninety degrees between a lock position (i.e., where the cover  138  is coupled to the third portion  22 ) and an unlocked position (i.e., where the cover  138  is decoupled from the third portion  22 ). 
     As described above and illustrated in  FIG. 3 , each portion  14 ,  18 ,  22  is an independent body. Two end caps  130 ,  134  are coupled to each of the portions  14 ,  18 ,  22 . In the illustrated embodiment, the portions  14 ,  18 ,  22  are disposed such that the respective support surfaces  38 ,  58 ,  102  are oriented in substantially the same direction. The first end cap  130  is coupled to the first end  32  of the luminaire  10 . The second end cap  134  is coupled to the second end  34  of the luminaire  10 . Each end cap  130 ,  134  includes a substantially similar profile as the combination of the three portions  14 ,  18 ,  22  (i.e., sides of the end caps  130 ,  134  have a similar shape to the lenses  70 ,  72  coupled to the first or second portions  14 ,  18  and a middle has a similar shape to the three portions  110 ,  114 ,  118  ( FIG. 6 ). 
     One edge of the end caps  130 ,  134  includes flanges  146 . Each portion  14 ,  18 ,  22  is positioned in a respective location of the end caps  130 ,  134  (i.e., the third portion  22  is positioned in the middle of the end caps  130 ,  134  and the first and second portions  14 ,  18  are positioned on the sides). The flanges  146  abut the portions  14 ,  18 ,  22  on surfaces opposite the support surfaces  38 ,  58 ,  102  proximate the channels  30 ,  56 ,  98  (i.e., the flanges  146  are external to the channels). Fastening members (e.g., threaded screws)  150  ( FIG. 5 ) extend through the flanges  146  and the respective support surfaces  38 ,  58 ,  102  so that the end caps  130 ,  134  are coupled to each portion  14 ,  18 ,  22  ( FIG. 5 ). 
     As shown in  FIG. 7A , the end caps  130 ,  134  include apertures  154  oriented parallel to the axes  16 ,  20 ,  24  while the end caps  130 ,  134  are coupled to the portions  14 ,  18 ,  22 . In the illustrated embodiment, each end cap  130 ,  134  includes two apertures  154  disposed proximate the third portion  22 . One aperture  154  is disposed on each side of the third portion  22 . 
     As shown in  FIG. 7B , a bracket  158  is coupled to the end cap  134 . The bracket  158  is substantially rectangular in shape and extends orthogonally with respect to the axes  16 ,  20 ,  24  while the end cap  134  is coupled to the portions  14 ,  18 ,  22 . The bracket  158  includes a passage  162  ( FIG. 3 ) that extends the length of the bracket  158 . Electrical wiring (not shown) extends from the control housing  122  ( FIG. 6 ) in the third portion  22  into the passage  162 . The wiring travels through the passage  162  to the channel  38  of the first portion  14  and to the channel  58  of the second portion  18 . The wiring to provide current to the LEDs in both the first portion  14  and the second portion  18  is provided from one end of the fixture  10 , simplifying assembly and servicing. The wiring electrically connects to the LEDs  42  and provides the LEDs  42  with a source of electrical current. The control elements disposed in the control housing  122  may control other aspects of the LEDs  42  (e.g., on/off controls, brightness controls, color hue controls). 
     The luminaire  10  is a low-profile light fixture (e.g., a high bay light fixture) and is configured to be suspended from an elevated surface or ceiling (not shown). Cables (not shown) may extend through apertures  154  and can be anchored to the ceiling in order to secure the luminaire  10  to the ceiling. In other embodiments, such as  FIG. 18 , brackets  220  can be coupled to the luminaire  10  proximate the support surface  102 . Fasteners  222  (e.g., threaded screws— FIG. 18 ) may be received through the bracket  220  to couple the luminaire  10  to the ceiling. In the embodiment of  FIG. 18 , two brackets  220  engage slots on sides of the third portion  22 . In other embodiments, fewer or more brackets  220  may support the luminaire  10 . 
     While coupled to the ceiling, the luminaire  10  is oriented so that the lenses  70 ,  72  face the floor. Light emitted from the LEDs  42  passes through the respective lenses  70 ,  72  and into a room. In some embodiments, the body of the luminaire  10  includes a gloss finish to improve surface reflectivity. The lenses  70 ,  72  can include prisms (not shown) to allow for narrow or wide light distribution. The LEDs  126  are oriented toward an opposite direction from the LEDs  42  (i.e., toward the ceiling). The LEDs  126  provide an up-light and illuminate the ceiling to avoid shadows and dark spots on the ceiling. 
     The quarter-turn screws  142  and the snap-fit lenses  70 ,  72  allow a user to easily access each portion  14 ,  18 ,  22  independently once the luminaire  10  has been mounted to the ceiling. The bracket  158  stores all of the wiring in a single passage  162  to provide a clean look to the luminaire  10 . 
     As shown in  FIG. 8 , in some embodiments a cage or wire guard  166  can be positioned around one or both lenses  70 ,  72 . In the illustrated embodiment, one wire guard  166  is disposed around the first lens  70  and one wire guard is disposed around the second lens  72 , allowing each wire guard  166  to be removed independently of the other wire guard  166 . The wire guards  166  couple to opposite sides of the luminaire  10 . Fastening brackets  170  of the wire guards  166  are coupled to the cover  138  as well as the support surfaces  38 ,  58 . The wire guards  166  provide protection for the lenses  70 ,  72 . 
     As shown in  FIG. 10 , in some embodiments a back pan  200  is coupled to the side surfaces  106  of the third portion  22 . In the illustrated embodiment, the back pan  200  is spaced apart from the support surface  102 . A battery  202  is coupled to the back pan  200 . The battery  202  supplies electrical energy to the control housing  122  ( FIG. 6 ). In some embodiments, the battery  202  may be a battery back-up, while in other embodiments, the battery may be the control housing&#39;s  122  only supply of electrical energy. 
       FIGS. 11-13  illustrate a luminaire  510  according to another embodiment. At least some differences and similarities between luminaire  510  and luminaire  10  are described below. Similar features are identified with similar reference numbers, plus  500 . 
     As shown in  FIGS. 11-13 , the luminaire  510  includes distinct portions, channels, or trays. In the illustrated embodiment, the luminaire  510  includes a first portion  514  extending along a first axis  516 , a second portion  518  extending along a second axis  520 , and a third portion  522  extending along a third axis  524 . Each of the portions  514 ,  518 ,  522  is substantially rectangular in shape and extends between a first end  532  and a second end  534  of the luminaire  510 . Each axes  516 ,  520 ,  524  is parallel with respect to the other axes. 
     The first portion  514  is disposed on one side of the luminaire  510  and the second portion  518  is disposed on another side of the luminaire  510 , such that the first portion  514  and the second portion  518  are spaced apart from one another. The third portion  522  is disposed between the first and second portions  514 ,  518 . The third portion  522  is adjacent to the first and second portions  514 ,  518 . In the illustrated embodiment, the first, second, and third portions  514 ,  518 ,  522  are formed as a unitary piece of material. 
     As shown in  FIG. 13 , each portion  514 ,  518 ,  522  has a substantially U-shape with a support surfaces  538 ,  558 , and  602  respectively. LEDs  542  are coupled to the support surfaces  538 ,  558 . In the illustrated embodiment, three strips of LEDs  542  are coupled to the each support surface  538 ,  558 . Two side surfaces  540 ,  562 ,  606  extend from each support surface  538 ,  558 ,  602  respectively. A control housing  622  is coupled to the support surface  602  and houses various control elements (not shown) that are in electrical communication with each other and/or electrical elements disposed outside of the control housing  622 . For example, the control elements are in electrical communication with the LEDs  626 . The control elements may include current control, which drives a current output by the control elements. 
     The side surfaces  540 ,  562  include pockets  546 ,  566  that receive protuberances  586  from a lens  570 ,  572 . The protuberances  586  nest within the pockets  546 ,  566  is a substantially similar manner as described above with regard to the luminaire  510  and are not repeated here for the sake of brevity. In the illustrated embodiment, the lenses  570 ,  572  fit within the respective portions  514 ,  518  so that substantially the entire lens  570 ,  572  is received within the respective portion  514 ,  518 . 
     A planar surface  674  extends between third portion  522  and each of the first and second portions  514 ,  518 . A cover  638  is positioned on the planar surfaces  674  such that planar surfaces of the cover  638  abut the planar surfaces  674 . The cover  638  is removable from the lower surface of the third portion  522 , facilitating access to the components in the third portion  522  for servicing or replacement purposes. As shown in  FIG. 10 , fasteners  642  are disposed proximate the first end  532  and the second end  534  of the luminaire  510 . In the illustrated embodiment, the fasteners  642  are quarter-turn screws. Each quarter-turn screw  642  is rotatable ninety degrees between a lock position (i.e., where the cover  638  is coupled to the third portion  522 ) and an unlocked position (i.e., where the cover  638  is decoupled from the third portion  522 ). 
     Two end caps  630 ,  634  are coupled to each of the portions  514 ,  518 ,  522 . in the illustrated embodiment, the portions  514 ,  518 ,  522  are disposed such that the respective support surfaces  538 ,  558 ,  602  are oriented in substantially the same direction. The first end cap  630  is coupled to the first end  532  of the luminaire  510 . The second end cap  634  is coupled to the second end  534  of the luminaire  510 . Each end cap  530 ,  534  includes a substantially similar profile as the combination of the three portions  514 ,  518 ,  522 . 
     As shown in  FIG. 11 , a bracket  658  is coupled to the end cap  634 . The bracket  658  is substantially rectangular in shape and extends orthogonally with respect to the axes  516 ,  520 ,  524  while the end cap  634  is coupled to the portions  514 ,  518 ,  522 . The bracket  658  includes a passage (not shown) that extends the length of the bracket  658 . Electrical wiring (not shown) extends from the control housing  622  ( FIG. 13 ) in the third portion  522  into the passage. The wiring travels through the passage to the first portion  514  and to the second portion  518 . The wiring to provide current to the LEDs in both the first portion  514  and the second portion  518  is provided from one end of the fixture  510 , simplifying assembly and servicing. The wiring electrically connects to the LEDs  542  and provides the LEDs  542  with a source of electrical current. The control elements disposed in the control housing  622  may control other aspects of the LEDs  542  (e.g., on/off controls, brightness controls, color hue controls). 
     The luminaire  510  is a low profile high bay light and is configured to be suspended from an elevated surface or ceiling (not shown). Cables (not shown) may extend through apertures  654  and anchor into the ceiling in order to secure the luminaire  510  to the ceiling. In other embodiments, brackets (not shown) may be coupled to the luminaire  510  proximate the support surface  602 . Fasteners (e.g., threaded screws—not shown) may be received through the bracket to couple the luminaire  510  to the ceiling. 
     While coupled to the ceiling, the luminaire  510  is oriented so that the lenses  570 ,  572  face the floor. Light emitted from the LEDs  542  passes through the respective lenses  570 ,  572  and into a room. In some embodiments, the body of the luminaire  510  includes a gloss finish to improve surface reflectivity. The lenses  570 ,  572  can include prisms (not shown) to allow for narrow or wide light distribution. LEDs  626  are coupled to an outer surface of the third portion  522  oriented toward an opposite direction from the LEDs  542  (i.e., toward the ceiling). The LEDs  626  provide an up-light and illuminate the ceiling to avoid shadows and dark spots on the ceiling. 
     The quarter-turn screws  642  and the snap-fit lenses  570 ,  572  allow a user to easily access each portion  514 ,  518 ,  522  independently once the luminaire  510  has been mounted to the ceiling. The bracket  658  stores all of the wiring in a single passage to provide a clean look to the luminaire  510 . 
       FIGS. 14-17  illustrate a luminaire  710  according to another embodiment. At least some differences and similarities between luminaire  710  and luminaire  10  are described below. Similar features are identified with similar reference numbers, plus  700 . 
     As shown in  FIGS. 14-17 , the luminaire  710  includes distinct portions, channels, or trays. In the illustrated embodiment, the luminaire  710  includes three first portions  714  extending along a first axis  716 , three second portions  718  extending along a second axis  720 , and a third portion  722  extending along a third axis  724 . Each of the portions  714 ,  718 ,  722  is substantially rectangular in shape and extends between a first end  732  and a second end  734  of the luminaire  710 . Each axes  716 ,  720 ,  724  is parallel with respect to the other axes. 
     In the illustrated embodiment, each portion  714 ,  718 ,  722  is laterally spaced apart from the other portions. In other words, none of the portions  714 ,  718 ,  722  are directly fixed to the other. The first portions  714  is disposed on one side of the luminaire  710  and the second portions  718  is disposed on another side of the luminaire  710 , such that the first portions  714  and the second portions  718  are spaced apart from one another. Each first portion  714  and each second portion  718  are also spaced apart from each other. The third portion  722  is disposed between the first and second portions  714 ,  718 . The third portion  722  is spaced apart from the first and second portions  714 ,  718 , and a gap  726  is disposed between each adjacent portion  714 ,  718 ,  722 . 
     As shown in  FIG. 17 , each portion  714 ,  718 ,  722  has a substantially U-shape with a support surfaces  738 ,  758 , and  802  respectively. LEDs  742  are coupled to the support surfaces  738 ,  758 . In the illustrated embodiment, one strip of LEDs  742  are coupled to the each support surface  738 ,  758 . Two side surfaces  740 ,  762 ,  806  extend from each support surface  738 ,  758 ,  802  respectively. A control housing  822  is coupled to the support surface  802  and houses various control elements (not shown) that are in electrical communication with each other and/or electrical elements disposed outside of the control housing  822 . For example, the control elements are in electrical communication with the LEDs  826 . The control elements may include current control, which drives a current output by the control elements. 
     The side surfaces  740 ,  762  include protuberances  880  that are received in pockets  884  on a lens  770 ,  772 . The protuberances  880  have a substantially planar surface that abuts a substantially planar surface of the pockets  884 . As described above, the arrangement of the protuberance  880  abutting the pockets  884  provides a snap-fit arrangement. In this arrangement though, the lenses  770 ,  772  may move in a direction transverse the axes  716 ,  720 ,  724  (i.e., the lenses  770 ,  772  may move toward the support surfaces  738 ,  758 . To decouple the lenses  770 ,  772  from the portions  714 ,  718 ,  722 , a user may provide a force directed toward a center of the lens  770 ,  772  so that the planar surfaces of the pocket  884  and the protuberance  880  no longer abut. 
     The side surfaces  806  include an oblique portion  810 , an orthogonal portion  814 , and a parallel portion  818 . Each of the portions  810 ,  814 ,  818  is substantially planar surfaces. The oblique portion  810  is adjacent the support surface  802  and is disposed obliquely with respect to the support surface  802 . The orthogonal portion  814  is adjacent the oblique portion  810  and disposed orthogonally with respect to the support surface  802 , and obliquely with respect to the oblique portion  810 . The parallel portion  818  is adjacent the orthogonal portion  802  and is disposed parallel with respect to the support surface  802  and orthogonally with respect to the orthogonal surface  814 . 
     A cover  838  is coupled to the third portion  722  proximate the parallel portions  818  and encloses the control housing  822 . The cover  838  is removable from the lower surface of the third portion  722 , facilitating access to the components in the third portion  722  for servicing or replacement purposes. As shown in  FIG. 16 , a fastening member  842  is disposed at either end of the third portion  722  (i.e., proximate the first end  732  and the second end  734 ) and is used to couple the cover  838  to the third portion  722 . In the illustrated embodiment, the fastening members  842  are quarter-turn screws. Each quarter-turn screw  842  is rotatable ninety degrees between a lock position (i.e., where the cover  838  is coupled to the third portion  722 ) and an unlocked position (i.e., where the cover  838  is decoupled from the third portion  722 ). 
     Two end caps  830 ,  834  are coupled to each of the portions  714 ,  718 ,  722 . In the illustrated embodiment, the portions  714 ,  718 ,  722  are disposed such that the respective support surfaces  738 ,  758 ,  802  are oriented in substantially the same direction. The first end cap  830  is coupled to the first end  732  of the luminaire  710 . The second end cap  834  is coupled to the second end  734  of the luminaire  710 . Each end cap  730 ,  734  includes a substantially similar profile as the combination of the three portions  714 ,  718 ,  722 . 
     As shown in  FIGS. 15 and 17 , a mounting bracket  890  is coupled to the support surfaces  738 ,  758 ,  802  of all of the portions  714 ,  718 ,  722 . The bracket  890  receives fasteners and provides an additional coupling means between the portions  714 ,  718 ,  722  of the luminaire. Each portion  714 ,  718 ,  722  may be independently removed from the mounting bracket  890 . 
     As shown in  FIG. 15 , a bracket  858  is coupled to the end cap  834 . The bracket  858  is substantially rectangular in shape and extends orthogonally with respect to the axes  716 ,  720 ,  724  while the end cap  834  is coupled to the portions  714 ,  718 ,  722 . The bracket  858  includes a passage (not shown) that extends the length of the bracket  858 . Electrical wiring (not shown) extends from the control housing  822  ( FIG. 17 ) in the third portion  722  into the passage. The wiring travels through the passage to the first portion  714  and to the second portion  718 . The wiring to provide current to the LEDs in both the first portion  714  and the second portion  718  is provided from one end of the fixture  710 , simplifying assembly and servicing. The wiring electrically connects to the LEDs  742  and provides the LEDs  742  with a source of electrical current. The control elements disposed in the control housing  822  may control other aspects of the LEDs  742  (e.g., on/off controls, brightness controls, color hue controls). 
     The luminaire  710  is a low profile high bay light and is configured to be suspended from an elevated surface or ceiling (not shown). Cables (not shown) may extend through apertures  854  and anchor into the ceiling in order to secure the luminaire  710  to the ceiling. In other embodiments, brackets (not shown) may be coupled to the luminaire  710  proximate the support surface  802 . Fasteners (e.g., threaded screws—not shown) may be received through the bracket to couple the luminaire  710  to the ceiling. 
     While coupled to the ceiling, the luminaire  710  is oriented so that the lenses  770 ,  772  face the floor. Light emitted from the LEDs  742  passes through the respective lenses  770 ,  772  and into a room. In some embodiments, the body of the luminaire  710  includes a gloss finish to improve surface reflectivity. The lenses  70 ,  72  can include prisms (not shown) to allow for narrow or wide light distribution. LEDs  826  are coupled to an outer surface of the third portion  722  oriented toward an opposite direction from the LEDs  742  (i.e., toward the ceiling). The LEDs  826  provide an up-light and illuminate the ceiling to avoid shadows and dark spots on the ceiling. 
     The quarter-turn screws  842  and the snap-fit lenses  770 ,  772  allow a user to easily access each portion  714 ,  718 ,  722  independently once the luminaire  710  has been mounted to the ceiling. The bracket  858  stores all of the wiring in a single passage to provide a clean look to the luminaire  710 . 
     The embodiment(s) described above and illustrated in the figures are presented by way of example only and are not intended as a limitation upon the concepts and principles of the present disclosure. As such, it will be appreciated that variations and modifications to the elements and their configuration and/or arrangement exist within the spirit and scope of one or more independent aspects as described.