Patent Publication Number: US-9890932-B2

Title: Luminaire

Description:
FIELD OF THE INVENTION 
     The present invention relates to the field of luminaires, and in particular, luminaires utilized for perimeter lighting. 
     BACKGROUND 
     A luminaire may be utilized to provide perimeter lighting. In one example, a luminaire configured for perimeter lighting may be positioned within a recess, or a cove structure. As such, one or more recesses, or cove structures, may be positioned around a perimeter of a space into which a luminaire is configured to provide lighting. In one example, recesses, or cove structures, may be configured with a variety of different dimensions (lengths, widths and/or heights). As such, a luminaire configured for recessed lighting may include features configured to adjust one or more lighting parameters (directionality, and the like) of the luminaire. Accordingly, the present disclosure provides for improved systems and methods for adjusting one or more lighting parameters associated with a luminaire configured for perimeter lighting. 
     BRIEF SUMMARY 
     The following presents a simplified summary of the present disclosure in order to provide a basic understanding of some aspects of the claimed subject matter. This summary is not an extensive overview of the claimed subject matter. It is not intended to identify key or critical elements of the claimed subject matter or to delineate the scope of the claimed subject matter. The following summary merely presents some concepts of the claimed subject matter in a simplified form as a prelude to a more detailed description provided below. 
     In one aspect, this disclosure describes a luminaire configured for perimeter lighting, and having improved features for adjusting one or more lighting characteristics of said luminaire. The luminaire may comprise a light bar structure positioned between a pair of bracket structures within a housing structure, and the light bar structure may rotate relative to the housing structure. The luminaire may also have a reflector structure that redirects a portion of light emitted from the light bar structure. The reflector structure may have a light scoop and a spine or pivot structure about which the reflector structure may rotate relative to the housing structure. The luminaire may further allow for an angle of rotation of the light bar structure to be adjustable independently of an angle rotation of the reflector structure. 
     In another aspect, a luminaire is described as having a housing structure that is positioned within a recessed cove. The housing structure may have a light bar structure for emitting visible light, and a hinge or pivot structure on the light bar structure that allows the light bar structure to rotate relative to the housing structure. The luminaire also has a reflector structure for redirection of light emitted from the light bar structure. Additionally, the reflector structure has a light scoop and a hinge or pivot structure, configured to rotate relative to the housing structure, and independently of the light bar structure. In yet another aspect, this disclosure includes a luminaire having a housing structure. The housing structure of the luminaire has a linear light source array and a light scoop, and each of the linear light source array and the light scoop are configured to rotate independently, relative to the housing structure. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The present invention is illustrated by way of example and not limited in the accompanying figures in which like reference numerals indicate similar elements and in which: 
         FIG. 1  illustrates one embodiment of a luminaire according to one or more aspects described herein. 
         FIG. 2  illustrates an alternative view of an embodiment of a luminaire according to one or more aspects described herein. 
         FIG. 3  illustrates a cross-sectional view of an exemplary embodiment of a luminaire according to one or more aspects described herein. 
         FIGS. 4A-4B  depict further cross-sectional views of exemplary embodiments of a luminaire according to one or more aspects described herein. 
         FIG. 5A  schematically illustrates a cross-sectional view of an exemplary embodiment of a luminaire according to one or more aspects described herein. 
         FIG. 5B  depicts an isometric view of the exemplary luminaire embodiment from  FIG. 5A . 
         FIG. 6  depicts a cross-sectional view of a bracket structure according to one or more aspects described herein. 
         FIG. 7  depicts a cross-sectional view of a hinge arm according to one or more aspects described herein. 
         FIGS. 8A-8F  depict various configurations of an exemplary embodiment of a luminaire according to one or more aspects described herein. 
         FIGS. 9A-9B  depict two configurations of a luminaire in operation according to one or more aspects described herein. 
         FIGS. 10A-10C  depict another implementation of a luminaire according to one or more aspects described herein. 
         FIG. 11  schematically depicts an alternative implementation of a luminaire according to one or more aspects described herein. 
         FIG. 12  depicts a bracket structure according to one or more aspects described herein. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     As discussed above, there is need for improved luminaire designs. Furthermore, as is apparent from the Figures described above and the description provided below, various components are disclosed below, wherein said components may be mounted to other components. Mounting may be direct or indirect and this disclosure is not intended to be limiting in this respect. It is noted that various components are described below as separate components. Two or more of these components may be combined to form a single component as appropriate, and this disclosure is not intended to be limiting in this respect. 
     In addition, various features are described below in greater detail. It should be noted that different combinations of these features may be combined as desired to generate luminaires with more or less features, depending on the features that are needed. Thus, it is envisioned that additional luminaires using combinations of the below described features are within the scope of the present invention. 
     In one implementation, the systems and methods described herein are directed towards one or more embodiments of a luminaire having improved features for adjusting one or more lighting characteristics of said luminaire. Accordingly,  FIG. 1  schematically depicts a luminaire  100  positioned within a recessed cove structure  102 . In one example, luminaire  100  comprises a substantially elongated structure within a substantially elongated cove structure  102 . As such, luminaire  100  extends along a longitudinal length  104 , such that longitudinal length  104  is comparatively greater in length than width  106 . However, those of ordinary skill in the art will recognize that luminaire  100  may be configured as a luminaire for perimeter lighting (a luminaire configured to be positioned within a recessed cove) such that luminaire  100  may have a longitudinal length  104  and a width  106  configured with any dimensions. Additionally, those of ordinary skill in the art will recognize that multiple luminaires, such as luminaire  100 , may be positioned (spaced apart, or coupled to one another) within a recessed cove structure  102 . 
       FIG. 2  depicts a detailed view of luminaire  100  from  FIG. 1 . In one example, luminaire  100  comprises a light source array  202 , a light scoop structure  204 , a housing structure  206 , a lock mechanism  212 , and an electrical supply  216 . In one example, light source array  202  comprises a plurality of light sources, wherein elements  208   a  and  208   b  are exemplary light sources from the plurality of light sources. In one example, light sources  208   a  and  208   b  are configured as a linear array (one-dimensional) substantially along a longitudinal length (such as longitudinal length  104 ) of luminaire  100 . In another example, light source array  202  comprises a two-dimensional array of light sources, such as light sources  208   a  and  208   b . In one example, light sources  208   a  and  208   b  are light-emitting diodes. In another implementation, luminaire  100  may be configured with element  202  having additional or alternative light source technologies. For example, luminaire  100  may comprise one or more fluorescent tube light sources, or incandescent light sources, among others. Furthermore, light source array  202  may comprise a single/continuous light-emitting element (such as, for example, a light-emitting diode) instead of discrete light sources ( 208   a ,  208   b , among others). 
     In one example, light source array  202  comprises a structure that includes electrical circuitry (wiring, electrical components, and the like) configured to deliver electrical energy to the array of light sources (elements  208   a ,  208   b  and the like). Additionally, light source array  202  may comprise a structure having one or more heatsink elements configured to dissipate heat generated from one or more of light sources  208   a  and  208   b , and the like. In one example, light source array  202  comprises a lens structure  207 , wherein said lens  207  may comprise a transparent, partially-transparent, or translucent structure configured to shield one or more internal components of the light source array  202 . In one implementation, said lens  207  may be configured to focus, diffuse, or transmit substantially unchanged, a portion of light energy (luminous flux) emitted from one or more light source elements  208   a  and  208   b.    
     In one example, light scoop structure  204  may be configured to redirect a portion of light emitted from the light source array structure  202 . Accordingly, the light scoop structure  204  may comprise a substantially reflective surface. In one example, light scoop structure  204  is configured to rotate about an axis of rotation  210 . Accordingly, in one implementation, light source array structure  202  is configured to rotate independently of light scoop structure  204  such that a directionality (or a lighting “envelope,” or area of illumination) of light emitted from light source array  202  may be adjusted. 
     In one implementation, light scoop structure  204  comprises a substantially concave structure facing towards light source array  202 . Accordingly, surface  203  may be a substantially concave surface of light scoop structure  204 , and may comprise, in one example, a reflective material configured to reflect a portion of light emitted from light source array  202 . 
     In one example, luminaire  100  comprises a lock mechanism  212  comprising a structure configured to selectively prevent rotation of one or more of light scoop structure  204  and/or light source array structure  202  relative to housing structure  206 . As such, lock mechanism  212  may be rigidly coupled to housing structure  206 , and rotatably coupled to one or more of light scoop structure  204  and/or light source array structure  202 . In order to selectively prevent rotation of one or more of light scoop structure  204  and/or light source array structure  202 , thumb screw  214  may be actuated to rigidly couple light scoop structure  204  and/or light source array structure  202  to lock mechanism  212 . This selective rigid coupling is described in further detail in relation to  FIG. 4 . In an alternative implementation, thumb screw  214  may be replaced by another component that serves as an adjustable linear actuator element. For example, thumb screw  214  may alternatively comprise a screw, a pin, a bolt, a clip, or an electrically-actuated linear actuator member, among others. 
     In one implementation, luminaire  100  comprises an electrical supply  216 , wherein electrical supply  216  represents one or more components configured to supply electrical energy to the one or more light sources (e.g.  208   a  and  208   b ) that make up the light source array  202 . In this way, electrical supply  216  may comprise one or more components (transformers, and the like) configured to step-up or step-down a voltage supplied to luminaire  100  from an external electrical energy supply (not pictured). Additionally, electrical supply  216  may comprise one or more components configured to condition a supply of electrical energy to luminaire  100  (A.C. to D.C. conversion, current limiting and the like). Furthermore, electrical supply  216  may comprise one or more components configured to dissipate heat generated within luminaire  100 . In yet another implementation, electrical supply  216  may comprise wiring configured to allow a pair of luminaires, such as a pair of luminaire  100  to be positioned end-to-end such that end  250  of luminaire  100  may be positioned in contact with the corresponding end (not pictured) of another luminaire. In this way, two or more luminaires  100  may be positioned along a longitudinal length  104  of a recessed cove structure  102 . Additionally, those of ordinary skill in the art will recognize various additional or alternative components that may be utilized within electrical supply  216  to provide electrical energy to light source array  202 . 
     Those of ordinary skill in the art will recognize that luminaire  100  may be utilized with any power rating/lighting intensity rating/luminous flux of light sources, such as light sources  208   a  and  208   b , and without departing from the disclosures described herein. 
     Those of ordinary skill in the art will recognize various structural materials that may be utilized in luminaire  100 , wherein selection of a material may be based upon one or more of a specific properties, or structural properties including, among others, electrical conductivity, thermal conductivity, and mechanical strength. As such, one or more components of luminaire  100  may comprise, among others, a metal, an alloy, a ceramic, a polymer, a fiber-reinforced material, a wooden material, or combinations thereof. In one specific example, housing structure  206  comprises a sheet metal structure, and the like. In one specific example, light scoop  204  may comprise a metallized polymer configured to reflect light. 
       FIG. 3  depicts a cross-sectional view of luminaire  100 . In particular, luminaire  100  is depicted as positioned within a recessed cove structure  301 . Accordingly, in one example, recessed cove structure  301  is depicted as having lengths  306 ,  308 ,  310 ,  312 ,  314 , and  316 . Those of ordinary skill in the art will recognize, however, that these lengths  306 - 316  may each have any dimensional value, without departing from the scope of the disclosures described herein. 
     In particular, luminaire  100  is depicted as having a light source array structure  202  and a light scoop structure  204  in respective first orientations. As depicted, the light source array structure  202  is hingedly-coupled to the bracket structure  303  by a first hinge arm  305 . Similarly, the light scoop structure  204  is hingedly-coupled to the bracket structure  303  by a second hinge arm  307 . In one example, bracket structure  303  comprises a symmetrical cross-sectional area, and is configured to receive the first hinge arm  305  and the second hinge arm  307  to form a first nested circular hinge and a second nested circular hinge, respectively. Accordingly, the nested circular hinges are described in greater detail in relation to  FIG. 6  and  FIG. 7 . 
       FIG. 4A  depicts another cross-sectional view of luminaire  100 . In one example,  FIG. 4A  depicts a second configuration of light source array  202 , compared to that first configuration of light source array  202  from  FIG. 3 . Accordingly, arrow depicts a schematic arc  404  through which light source array  202  may be rotated about bracket structure  303 . In one implementation, light source array  202  may rotate relative to bracket structure  303  (along arc  404 ) through a range of rotation. As such, those of ordinary skill in the art will recognize that the various implementations may be utilized with any ranges of rotation, without departing from the disclosures described herein. Accordingly, the light source array  202  may rotate relative to the bracket structure  303  through any range of rotation, and any angular values presented in this disclosure are merely by way of example, and should not be construed as limiting the described disclosures to the presented angular values. Similarly,  FIG. 4B  depicts a second configuration of light scoop  204 , compared to that first configuration of light scoop  204  from  FIG. 3 . As such, arrow depicts a schematic arc  412  through which light scoop  204  may be rotated about bracket structure  303 . In one implementation, light scoop  204  may rotate relative to bracket structure  303  (along arc  412 ) through a range of rotation. As such, those of ordinary skill in the art will recognize that the very simple notations may be utilized with any ranges of rotation, without departing from the disclosures described herein. Accordingly, the light scoop  204  may rotate relative to the bracket structure  303  for any range of rotation. 
     In one implementation,  FIG. 4B  depicts a lock mechanism bracket  212  having a lock mechanism bearing  420  and a lock mechanism sleeve  416  configured to receive a portion of a hinge arm  307  of light scoop  204 . As such, lock mechanism sleeve  416  is configured to rotate with that lock mechanism bearing  420  as the hinge arm  307  rotates within the bracket structure  303 . Furthermore, actuation of a thumb screw  214  may selectively couple the lock mechanism bearing  420  to the lock mechanism bracket  212  such that rotation of the lock mechanism sleeve  416 , the hinge arm  307 , and light scoop  204 , is prevented. Additionally or alternatively, rotation of the light source array  202  and its associated hinge arm  305  may be selectively locked using a same lock mechanism bracket  212 , or a second lock mechanism bracket (not pictured). 
       FIG. 5A  depicts the internal structure of luminaire  100 . Accordingly, luminaire  100  may comprise, among others, a light source array  202  rotatably-coupled to a bracket structure  303  by a first hinge arm  305 . Additionally, luminaire  100  may comprise a light scoop  204  rotatably-coupled to the bracket structure  303  by a second hinge arm  307 . In one example, bracket structure  303  comprises a uniform cross-sectional area when depicted in that orientation shown in  FIG. 5A . Similarly, one or more of the first hinge arm  305  and second hinge arm  307  may also comprise uniform cross-sectional areas, when depicted in that orientation shown in  FIG. 5A . 
       FIG. 5B  depicts an isometric view of luminaire  100 . As such,  FIG. 5B  illustrates a uniform cross-sectional area of one or more of the first hinge arm  305  associated with light source array  202 , the bracket structure  303 , and/or the second hinge arm  307  associated with light scoop  204 . 
       FIG. 6  depicts a cross-sectional view of the bracket structure  303 . In one example, bracket structure  303  comprises a symmetrical cross-sectional area about center line  601 . In one implementation, bracket structure  303  comprises a first hinge channel  602  and a second hinge channel  604 . As such, in one example, the first hinge channel  602  is configured to receive a first hinge arm, such as hinge arm  305  associated with a light source array  202 , and configured to form a first nested circular hinge. Similarly, in one example, the second hinge channel  604  is configured to receive a second hinge arm, such as hinge arm  307  associated with light scoop  204 , and configured to form a second nested circular hinge. 
     In one example, the hinge channel  604  comprises a center of curvature  606 . Furthermore, the hinge channel  604  may comprise a hook structure  608  having an open end  610  and a tangential end  612 . The hinge channel  604  further comprises a linear backstop structure  614  having a proximal end, corresponding to the tangential end  612 , and a distal end  616 . The hinge channel  604  further comprises an outer sleeve structure  618  with a first end corresponding to the distal end  616  of backstop structure  614 , and a second end  620 . Additionally, bracket structure  303  may comprise a support structure  630  configured to rigidly couple the bracket structure  303  to a support surface of a housing structure, such as housing structure  206 . Furthermore, it will be apparent that one or more surfaces may make up a structure, as described herein, and such that the terms “structure” and “surface” may be used interchangeably in certain instances. 
       FIG. 7  depicts a cross-sectional view of a hinge arm  307 . In particular, hinge arm  307  comprises a center of curvature  702 . As such, hinge arm  307  has a pivot structure  704 , and a radial arm structure  706  that is coupled to the pivot structure  704  at point  708 , and coupled to a circular arm structure  712  at point  710 . Said circular arm structure  712  further comprises a second end  714 . Accordingly, in one example, pivot structure  704  comprises a circular structure having a center of curvature corresponding to the center of curvature  702 . In one implementation, circular arm structure  712  also has a center of curvature corresponding to that center of curvature  702 . 
     In one implementation, the first hinge channel  602  and/or the second hinge channel  604  from the bracket structure  303 , as depicted in  FIG. 6 , are configured to receive the hinge arm  307 . Accordingly, a rotatable coupling between the bracket structure  303  and the hinge arm  307  is schematically depicted in  FIG. 5A  by the rotatable coupling between bracket structure  303  and one or more of the depicted hinge arms  305  and  307 . In one example, when hinge arm  307  is received into hinge channel  604  of bracket structure  303 , the center of curvature  606  approximately coincides with the center of curvature  702 . However, those of ordinary skill in the art will recognize that the described coupling of hinge channel  604  and hinge arm  307  may include engineering/manufacturing tolerances, and such that there may exist some degree of variation between the coupling of hinge channel  604  and hinge arm  307 . In one example, an engineering tolerance may be +/−20% of a given dimension, and the like. 
     In one example, a hinge arm, such as hinge arm  307 , is configured to be received into a hinge channel, such as hinge channel  604  of bracket structure  303 , with an interference fit. In another example, a hinge arm  307  is configured to be received into hinge channel  604  with a loose fit, and such that an angle of rotation of, in one example, a light scoop  204  relative to a bracket structure  303 , is maintained by selectively coupling the light scoop  204  to the bracket structure  303  using a lock mechanism to rigidly couple the light scoop  204  to the bracket structure  303 . In one example, this selective coupling may be facilitated by lock mechanism  212  from  FIG. 2 . 
     In one example, pivot structure  704  is configured to rotate about a center of curvature  702  and slide relative to hook structure  608 . Additionally, circular arm structure  712  is configured to rotate about the same center of curvature  702  and slide relative to outer sleeve structure  618  of hinge channel  604 . In a first configuration, and as schematically depicted in  FIG. 5A  by the relative positioning of hinge arm  307  and bracket structure  303 , the radial arm structure  706  is configured to contact the linear backstop structure  614  of the hinge channel  604 . In a second configuration, and as schematically depicted in  FIG. 4B  by the relative positioning of the hinge arm  307  relative to the bracket structure  303 , the radial arm structure  706  is configured to be spaced apart from the linear backstop structure  614  of the hinge channel  604 . In another example, hinge arm  307  comprises a stop  720  configured to contact endpoints  620  of outer sleeve structure  618  when configured in the first configuration described above. 
       FIGS. 8A-8F  depict various configurations of a luminaire  100 . In one example, luminaire  100  may comprise a light source array  202 , and a light scoop  204 . In one example, luminaire  100  comprises a lock mechanism bracket  212 , similar to lock mechanism  212  from  FIG. 2 . As such, in one example, luminaire  100  further comprises an angle gauge and bearing  420  configured to display an angle of rotation of one or more of light source array  202  and/or light scoop  204 . Furthermore, luminaire  100  may comprise a screw mechanism  214  configured to allow selective locking of one or more of light source array  202  and/or light scoop  204 . Accordingly, in one example, one or more of the light source array  202  and/or the light scoop  204  may rotate through an angle of 50° or more. In another example, one or more of the light source array  202  and/or the light scoop  204  may rotate through an angle of 70° or more. In yet another example, one or more of the light source array  202  and/or the light scoop  204  may rotate through an angle of 90°. 
     In one example, and as previously described, an orientation/rotation angle of one or more of light source array  202  and/or light scoop  204  may be adjustable to provide for variable directionality for a portion of light emitted from light source array  202 . In another example, the orientation/rotation angle of one or more of the light source array  202  and/or light scoop  204  may be adjusted to provide for adjustable lighting “envelopes,” or areas of illumination, and the like. As such, lines  812  and  814  schematically depict bounds of an area of illumination by luminaire  100 . As such, area  816  represents an area illuminated by a one or more light sources (such as light sources  208   a  and  208   b ) associated with light source array  202 . Accordingly,  FIGS. 8A-8F  depict various configurations of the independently-rotatable light source array  202  and light scoop  204 , wherein areas  816   a - 816   f  schematically illustrate different areas of illumination that may be achieved by adjusting one or more of an angle of rotation of the light source array  202  and/or light scoop  204 . Furthermore, those of ordinary skill in the art will recognize that the depicted configurations of luminaire  100  are not limited to those depicted in  FIGS. 8A-8F , wherein an angle of rotation of one or more of light source array  202  and/or light scoop  204  may be infinitely adjustable between a lower angular bound (which may be referred to as an angle of approximately 0°, and the like) and an upper angular bound. Accordingly, those of ordinary skill in the art will recognize that these described implementations may be utilized with any angular values without departing from the scope of the disclosures described herein. Accordingly, an upper angular bound may be associated with any angular value, and such that an angular range through which the light source array  202  and/or the light scoop  204  may be adjusted may have any value. Additionally, it will be readily apparent to those of ordinary skill that an illuminated area, such as area  816   a  from  FIG. 8A , may not be strictly bounded by those lines  812  and  814 . In other words, there may exist a gradient between an area in shadow, and that illuminated area  816   a , and such that lines  812  and  814  do not represent a sharp boundary between the illuminated area  816   a  and an area in shadow, and the like. 
       FIGS. 9A-9B  depict two configurations of luminaire  100  in operation. As such, luminaire  100  comprises a light source array  202 , a light scoop  204 , and a lock mechanism bracket  212 , among others. In that first configuration depicted in  FIG. 9A , luminaire  100  illuminates that area  906   a . In a second configuration, such as that configuration depicted in  FIG. 9B , luminaire  100  illuminates area  906   b , wherein the size and direction of area  906   b  differs from that of area  906   b  due to a difference in an angle of rotation of one or more of light source array  202  and/or light scoop  204  in  FIG. 9B  as compared to  FIG. 9A . 
       FIGS. 10A-10C  depict another implementation of a luminaire. In particular, luminaire  1000  may have a housing structure  1002  with a longitudinal length  1004 . In one example, this housing structure  1002  may be similar to housing structure  206 . As such, in one implementation, housing structure  1002  may be constructed from one or more of a metal, an alloy, a polymer, a fiber-reinforced material, a wooden material, or a glass, among others. In one specific example, housing structure  1002  may be constructed from a steel sheet metal material, and the like. As such, those of ordinary skill in the art will recognize that any construction material and/or technique may be utilized to construct luminaire  1000  without departing from the scope of the disclosures described herein. Further, luminaire  1000  may be constructed with any dimensional values, such that longitudinal length  1004  may be embodied with any length, without departing from the scope of the disclosures described herein. 
     In one implementation, luminaire  1000  comprises a first bracket  1006   a  coupled to a first end  1008   a , and a second bracket  1006   b  coupled to a second end  1008   b  of the housing structure  1002 . The luminaire  1000  may further have a light bar structure  1010  comprising a plurality of light sources. As such, light bar structure  1010  may be similar to light source array  202 . Further, light bar structure  1010  may comprise a plurality of light sources configured into a one-dimensional, two-dimensional, or three-dimensional array. In one specific example, light bar structure  1010  may comprise a plurality of light-emitting diodes (LEDs). In one embodiment, the light bar structure  1010  may comprise a lens structure  1012 , and configured to adjust the light emitted from the light bar structure  1010 . In this way, the lens structure  1012  may be similar to lens structure  207 , previously described. 
     In one example, the light bar structure  1010  has a first end  1014   a  spaced apart from a second end  1014   b  along the longitudinal length  1004 . Further, the light bar structure  1010  may be rotatably-coupled to the first bracket  1006   a  at the first end  1014   a  by a first bearing element  1016   a . Similarly, the light bar structure  1010  may be rotatably-coupled to the second bracket  1006   b  at the second end  1014   b  by a second bearing element  1016   b . Those of ordinary skill in the art will recognize that the first bearing element  1016   a  and the second bearing element  1016   b  may comprise any bearing structure known to those of ordinary skill in the art, including, among others, a ball bearing, or a bearing comprising a sleeve (configured as part of the brackets  1006   a  and  1006   b ) configured to receive a shaft that is rigidly-coupled to the light bar structure  1010 , and such that the shaft is configured to rotate relative to the sleeve through use of one or more low friction materials. In one example, the first bearing element  1016   a  and the second bearing element  1016   b  may be configured to form an interference fit with each of the first bracket  1006   a  and the second bracket  1006   b . As such, this described interference fit may resist rotational motion of the light bar structure  1010 , e.g. rotational motion of the light bar structure  1010  due to a weight of the light bar structure  1010 . In one example, the described interference fit between the light bar structure  1010  and the first and second brackets  1006   a  and  1006   b  may resist rotational motion of the light bar structure  1010  relative to the brackets  1006   a  and  1006   b  until a manual rotational force is applied to the light bar structure  1010 , thereby overcoming a friction force in the first and second bearing elements  1016   a  and  1016   b.    
     In one implementation, the luminaire  1000  comprises a reflector structure  1018 . As such, in one example, the reflector structure  1018  comprises a light scoop  1020  and a spine structure  1022 , such that the spine structure  1022  is rigidly-coupled to a proximal side  1024  of the light scoop  1020 . In one implementation, the spine structure  1022  has a first end  1026   a  configured to be rotatably-coupled to the first bracket structure  1006   a  by a third bearing element  1028   a , and a second end  1026   b  configured to be rotatably-coupled to the second bracket structure  1006   b  by a fourth bearing element  1028   b . Accordingly, in one example, the third and fourth bearing elements  1028   a  and  1028   b  may be similar to the first and second bearing elements  1016   a  and  1016   b . As such, the third and fourth bearing elements  1028   a  and  1028   b  may be configured to resist rotational motion of the reflector structure  1018  due to a weight of the reflector structure  1018  exerted on the third and fourth bearing elements  1028   a  and  1028   b . Accordingly, the reflector structure  1018  may be configured to rotate relative to the third and fourth bearing elements  1028   a  and  1028   b  upon application of a manual rotational force to the reflector structure  1018 . Further, in one example, the light scoop  1020  may be similar to light scoop structure  204 . 
     In one example, the reflector structure  1018  may have a uniform cross-sectional area along the longitudinal length  1004  of the housing structure  1002 . Accordingly, in one example, the reflector structure  1018 , and in particular, the spine structure  1022 , may have a geometry similar to that described in relation to the second hinge arm  307  from  FIG. 7 . However, in another implementation, the spine structure  1022  may be embodied with one or more additional or alternative geometrical structures. For example, the spine structure  1022  may be configured to have a simple rod-like shape extending along the longitudinal length  1004  of the housing structure  1002 . As such, this rod-like shape may be similar to the geometry of spine element  1102  (otherwise referred to as a hinge structure  1102 ) that is schematically depicted in  FIG. 11 . 
     In one implementation, each of the reflector structure  1018  and the light bar structure  1010  may be configured to rotate relative to the housing structure  1002 . As such, an angle of rotation of the light bar structure  1010  may be adjustable independently of an angle of rotation of the reflector structure  1018 . 
     In one implementation, the first bracket  1006   a  comprises a first scale  1030   a  and a second scale  1030   b  configured to indicate an angle of rotation of the light bar structure  1010  and the light scoop  1020 , respectively. Similarly, the second bracket  1006   b  may be configured with similar scales to those scales  1030   a  and  1030   b , and the like. Further, those of ordinary skill in the art will recognize that the light bar structure  1010  and/or the light scoop  1020  may be configured to rotate through any rotational angle range, without departing from the scope of the disclosures described herein. For example, the light bar structure  1010  and/or the light scoop  1020  may be configured to rotate through an angular range of 70°, 80°, 90°, 100°, or 110°. Further, an angular range through which the light bar structure  1010  may be rotated may be different to an angular range through which the light scoop  1020  may be rotated, without departing from the scope of the disclosures described herein. 
     In one implementation, a position of the light bar structure  1010  and/or the reflector structure  1018  may be selectively locked using a locking mechanism (not shown). Accordingly, those of ordinary skill in the art will recognize various locking mechanisms that may be utilized with the disclosures of  FIGS. 10A-10C , without departing from the scope of the disclosures described herein. In one specific example, a locking mechanism similar to that thumb screw  214  may be utilized with a luminaire  1000 , and the like. 
       FIG. 11  schematically depicts an alternative implementation of a luminaire  1100 . In particular, the schematic implementation of luminaire  1100  comprises a light bar structure  1104 , and a reflector structure  1106 . Accordingly, the light bar structure  1104  may be similar to the light bar structure  1010  from  FIGS. 10A and 10B . Further, the reflector structure  1106  may be similar to the reflector structure  1018  depicted in  FIG. 10C . As such, the reflector structure  1106  may comprise a light scoop  1108 , similar to the light scoop  1020 , and a hinge structure  1102 . In one example, the hinge element  1102  extends along a longitudinal length of the luminaire  1100 , with said longitudinal length schematically-illustrated by arrow  1110 . In particular, the hinge structure  1102  may comprise a cylindrical structure configured with a first opening  1112   a . In one example, rotation of the reflector structure  1106  may be about a center axis of the circular opening  1112   a . Accordingly, in one example, the first opening  1112   a  may be configured to receive a first peg  1202  of a bracket structure  1200 , as schematically depicted  FIG. 12 . In this way, the circular opening  1112   a  may be configured to rotate relative to the first peg structure  1202  of the bracket structure  1200 . In one example, the circular opening  1112   a  of the hinge structure  1102  may loosely rotate relative to the first peg structure  1202 . 
     Similar to the reflector structure  1106 , the light bar structure  1104  may rotate utilizing a hinge structure  1114 , similar to the hinge structure  1102 . As such, the hinge structure  1114  may have a second opening  1112   b  configured to receive a second peg structure  1204  of the bracket structure  1200  depicted in  FIG. 12 . Accordingly, in one example, a rotatable coupling between the hinge structure  1102 , the hinge structure  1114 , and the bracket structure  1200  from  FIG. 12  may not be configured to resist motion of one or more of the reflector structure  1106  and/or the light bar structure  1104 . As such, in one implementation, the luminaire  1100  comprises a hinge retention structure  1118  that is configured to resist motion of hinge structure  1102  and hinge structure  1114 , thereby resisting rotational motion of the light bar structure  1104  and/or the reflector structure  1106 . In particular, the hinge retention structure  1118  may comprise a first tab  1116  and a second tab  1117 . Accordingly, in one example, the first tab  1116  may be configured to engage between a selected pair of a first plurality of teeth  1120  of the hinge structure  1102 . As such, the first plurality of teeth  1120  may be configured in a circular arc around an outer hinge surface  1122  of the hinge structure  1102 . As such, engagement between the first tab structure  1116  and a selected pair of the first plurality of teeth  1120  of the hinge structure  1102  may be configured to resist rotation of the reflector structure  1106  under a weight of the reflector structure  1106 . In one implementation, upon application of a manual rotational force to the reflector structure  1106 , the first tab structure  1116  may be configured to retract into the hinge retention structure  1118 , thereby allowing the hinge structure  1102  to rotate relative to the first peg structure  1202 . In one example, retraction of the first tab structure  1116  may be facilitated by a flexure structure. However, those of ordinary skill in the art will recognize alternative or additional implementations of the hinge retention structure  1118 , without departing from the scope of these disclosures. For example, the first tab structure  1116  may retract into the hinge retention structure  1118  using one or more spring elements, among others. In one implementation, operation of the second tab structure  1117  may be similar to the first tab structure  1116 , and such that the second tab structure  1117  may be configured to engage with a selected two of a second plurality of teeth  1124  on the hinge structure  1114 . In this way, engagement between the second tab structure  1117  and the selected pair of a second plurality of teeth  1124  on the hinge structure  1114  may be configured to resist rotation of the light bar structure  1104 . As such, an angle of rotation of the light bar structure  1104  may be adjusted upon application of a manual rotational force that causes the second tab structure  1117  to disengage from the selected two of the second plurality of teeth  1124 . 
     In one implementation, the light bar structure  1104  may comprise a heat sink structure  1130  that is configured to dissipate heat energy from one or more light sources within the light bar structure  1104 , among others. 
     It is noted that, as used herein, the term “approximately” may indicate a value ranging by plus or minus (+/−) 20% from an indicated value, and the like. 
     The present invention has been described in terms of preferred and exemplary embodiments thereof. Numerous other embodiments, modifications and variations within the scope and spirit of the appended claims will occur to persons of ordinary skill in the art from a review of this disclosure.