Patent Grant
9279553
The invention relates generally to a system and method for retrofitting an existing troffer style light fixture. Existing troffer light fixtures can be retrofitted to include a more efficient light source, replace components of a damaged troffer style light fixture, and/or otherwise upgrade or replace an existing troffer light fixture.
A troffer light fixture is a generally square or rectangular tray like housing and light source which is installed in a ceiling system. The ceiling system may be a dropped ceiling, ceiling grid and tile system, or other engineered ceiling system. The troffer light fixture includes a housing which includes a top body wall and four side body walls. Mounted to the troffer housing are typically lamp sockets (e.g., for fluorescent lamps), lighting ballast which receives electrical power from wiring within the ceiling, and/or other components. The troffer light fixture may further include a door which attaches to the troffer housing. The door may be or include a lens and typically opens downward from the troffer housing. It is challenging and difficult to develop a system which allows for quick and easy retrofitting of an existing troffer light fixture. It is also challenging and difficult to develop a system which retrofits an existing troffer light fixture and reuses the existing troffer housing. Further, it is challenging and difficult to develop a system which is compatible with a variety of troffer light fixtures.
One embodiment relates to a retrofitting kit for retrofitting an existing troffer light fixture having a troffer housing. The retrofitting kit includes at least one of an adapter bracket and a retainer configured to engage at least one of the existing troffer light fixture and a T-bar of a ceiling system and a door assembly configured to be held in the ceiling system by the at least one of the adapter bracket and the retainer. The door assembly includes a lens, a housing configured to hold the lens, the housing including one or more sidewalls disposed around a periphery of the lens, where the one or more sidewalls extend upward, away from the lens to define a cavity, and a plurality of LEDs having primary light axes extending inward into the cavity. The plurality of LEDs are coupled to the one or more sidewalls and positioned to illuminate the lens from behind with a uniform distribution of light when engaged. The plurality of LEDs are disposed around at least a portion of the periphery of the housing thereby providing a low-profile lighting arrangement configured to fit within a space above the ceiling system.
Another embodiment relates to a light fixture that includes a retainer configured to engage a T-bar of a ceiling system and a door assembly configured to be held in the ceiling system by the retainer. The door assembly includes a lens, a housing configured to hold the lens, the housing including one or more sidewalls disposed around a periphery of the lens, where the one or more sidewalls extend upward, away from the lens to define a cavity, and a plurality of LEDs having primary light axes extending inward into the cavity. The plurality of LEDs are coupled to the one or more sidewalls and positioned to illuminate the lens from behind with a uniform distribution of light when engaged. The plurality of LEDs are disposed around at least a portion of the periphery of the housing thereby providing a low-profile lighting arrangement configured to fit within a space above the ceiling system.
Another embodiment relates to a method for retrofitting an existing troffer light fixture using a door assembly that includes removing a door of the existing troffer light fixture, disconnecting the wiring from a power source to the existing troffer light fixture, wiring the door assembly to the wiring from the power source, and installing the door assembly within a ceiling system with which the existing troffer light fixture is associated. Installing the door assembly includes inserting a housing of the door assembly through an opening in the ceiling system and thereafter lowering the housing such that a retainer of the door assembly engages a T-bar of the ceiling system. The door assembly includes a plurality of LEDs coupled to one or more sidewalls of the housing.
In the following detailed description, reference is made to the accompanying drawings. In the drawings, similar symbols typically identify similar components, unless context dictates otherwise. The illustrative embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be utilized, and other changes may be made, without departing from the spirit or scope of the subject matter presented here.
Referring now to
In alternative embodiments, troffer door retrofit system 100 includes only door assembly 101. Door assembly 101 can include hinges and/or latches which are positioned such that door assembly 101 can be hung from an existing troffer housing. For example, an existing troffer light fixture may include a door hung from slots included in the housing of the existing troffer light fixture. The door may be removed, and door assembly 101 of troffer door retrofit system 100 may be hung from the slots in the housing of the existing troffer light fixture. Internal components (e.g., lamps and ballast) of the existing troffer light fixture may be removed first to make room for door assembly 101 when in the closed position.
In further embodiments, troffer door retrofit system 100 includes door assembly 101 and adaptor brackets 103, but adaptor brackets 103 may be optionally used when retrofitting an existing troffer light fixture. For example, the hinges and latches of door assembly 101 may be positioned such that door assembly 101 is compatible with a wide range of and/or a common existing troffer light fixture and its housing. The door of the existing troffer light fixture may be removed and replaced with door assembly 101 (e.g., without the use of adaptor brackets 103). If door assembly 101 is not compatible with an existing troffer housing (e.g., the hinges and or latches do not align with slots in the existing troffer housing), adaptor brackets 103 may be used. This adaptability may advantageously increase the number of existing troffer light fixture types (e.g., different configurations and/or different manufacturers) with which troffer door retrofit system 100 is compatible. Thus, troffer door retrofit system 100 may be packaged or sold with both door assembly 101 and adaptor brackets 103 to increase the number of existing troffer light fixtures which can be retrofit as described herein. In alternative embodiments, door assembly 101 and/or adaptor brackets 103 may be packaged or sold individually.
In some further embodiments, door assembly 101 includes hinges and/or latches which may be repositioned on door assembly 101. For example, the hinges and/or latches may be secured in a slot which allows longitudinal movement, and the hinges and/or latches may be secured in the desirable position by engaging a fastener (e.g., tightening a nut and bolt combination). Advantageously, this may increase the number of existing troffer light fixtures with which troffer door retrofit system 100 is compatible (e.g., door assembly 101 may be compatible with a larger range of slot configurations in existing troffer housings).
Still referring to
Troffer door retrofit system 100 and door assembly 101 may include the same style lamps as an existing troffer light fixture or otherwise be approximately equivalent in parameters such as efficiency, cost to operate, lifespan, operating costs including maintenance, and/or other parameters. However, troffer door assembly 101 may include ballast, a controller, sensors, communication equipment, and/or other electronic components which are superior to those of an existing troffer light fixture or not included in an existing troffer light fixture. Retrofitting an existing troffer light fixture using troffer door retrofit system 100 may therefore provide an upgrade in electronics associated with a lighting system, sensors associated with a lighting system, control of a lighting system, automation of a lighting system, and/or otherwise upgrade a lighting system other than increasing the efficiency of the system by replacing the type of lamp used.
As an additional example, troffer door retrofit system 100 may provide a further advantage by allowing for easy replacement or repair of existing troffer light fixtures. For example, an existing troffer light fixture may break or otherwise need maintenance or repair (e.g., one or more lamps have burnt out or need replacing, ballast has been damaged or stops functioning properly, and/or other components require maintenance or repair). Troffer door retrofit system 100 may be used to replace components rather than repair them. Advantageously, this may be more cost effective than repairing the component (e.g., including or not including the long term energy savings of switching to a more efficient lamp) and may be more cost effective than replacing the entire existing troffer light fixture with one of the same type (e.g., troffer door retrofit system 100 may be comparable on cost and it may be quicker to install troffer door retrofit system 100 thereby reducing labor costs).
Referring now to
Existing troffer light fixture 207 can include components such as lens 213, troffer housing 209, lamps 211, ballast, supply wires, and/or other components.
As described in greater detail with reference to
The ceiling system may include a plurality of T-bars 201 which form a ceiling grid. The ceiling grid typically has dimensions such that ceiling tiles 2′ by 2′ (e.g., 2×2 ceiling tile 203) and/or ceiling tiles 2′ by 4′ (2×4 ceiling tile 205) are supported by the T-bars 201. Existing troffer light fixture 207 is sized to be supported in one of a 2×2 grid location or 2×4 grid location. In further embodiments, the ceiling system may have other dimensions. The dimensions of other devices, systems, and components described herein may be adjusted to be compatible with the other dimensions.
Typically, troffer housing 209 of existing troffer light fixture 207 includes a plurality of slots which allow a panel or door to attach to troffer housing 209. The panel or door may open and close (e.g., using latches and hinges) to allow access to other components of existing troffer light fixture 207. For example, the panel or door may be opened to change one or more lamps 211 of existing troffer light fixture 207. The panel or door may be or include a lens 213 or louver. The panel or door may also be removable from troffer housing 209 (e.g., unlatched and the hinges removed from the slots included in troffer housing 209). As described herein, the panel or door of existing troffer light fixture 207 may be removed and door assembly 101 of troffer door retrofit system 100 may be installed using the slots included in the troffer housing 209 of the existing troffer light fixture 207.
In some embodiments, existing troffer light fixture 207 may not include slots for a panel or door or may include slots which are not compatible with door assembly 101 of troffer door retrofit system 100. Adaptor brackets 103 may be used in conjunction with troffer housing 209 in such cases.
Existing troffer light fixture 207 may be sized to be compatible with differently sized ceiling systems. For example, troffer housing 209 may be sized the same or approximately the same as 2×2 ceiling tile 203 or 2×4 ceiling tile 205. Existing troffer light fixture 207 may therefore be secured by T-bar 201 of the ceiling system in any location sized for a corresponding ceiling tile. Advantageously, door assembly 101 and/or adaptor brackets 103 of troffer door retrofit system 100 may be sized either for a 2×2 ceiling system location, a 2×4 ceiling system location, or other sized systems.
With continued reference to
Referring now to
Troffer housing 209 can be supported by T-bars 201 using flanges 215. Flanges 215 may have a variety of configurations. In one embodiment, flanges 215 include a first vertical portion extending downward from troffer housing 209, a horizontal portion which rests on T-bar 201, and an additional vertical portion (e.g., for preventing lateral movement of troffer housing 209 in conjunction with the vertical portion of T-bar 201). In further embodiments, flanges 215 may have other configurations. For example, flanges 215 may meet T-bar 201 at an angle (e.g., 45 degrees), flanges 215 may not include a second or additional vertical portion, etc.
As described later in more detail, adaptor brackets 103 of troffer door retrofit system 100 are configured to be held in place against T-bar 201 in some embodiments. Adaptor brackets 103 may be inserted between the horizontal portion of flange 215 and the horizontal portion of T-bar 201. Adaptor brackets 103 may be prevented from moving laterally by engaging a portion of flange 215 such as the additional vertical portion. As a result, a portion of adaptor bracket 103 may be located between the end of flange 215 (e.g., an end formed by the additional vertical portion) and the vertical portion of T-bar 201. Adaptor brackets 103 can be further configured to extend horizontally so as to avoid interference with the remainder portion of flange 215 and/or other portions of troffer housing 209.
In alternative embodiments, troffer housing 209 may be supported on T-bar 201 using the top of the vertical portion of T-bar 201 and a support mechanism attached to troffer housing 209. Troffer housing 209 may include a portion which extends at least to the horizontal portion of T-bar 201 and may overlap with T-bar 201. This may give the appearance that existing troffer light fixture 207 is flush or nearly flush with the ceiling system. In such embodiments, adaptor bracket 103 may be held in place using a combination of T-bar 201 and the above described portion of troffer housing 209 which extends near to or overlapping with the horizontal portion of T-bar 201.
From flange 215, troffer housing 209 may extend vertically and/or horizontally to a top portion. The top portion may continue until the flange and upward extension is mirrored to meet a second T-bar 201. For example and as illustrated in
The geometry of door assembly 101 of troffer door retrofit system 100 may be configured such that a portion of door assembly 101 is contained within troffer housing 209. For example, door assembly 101 may have the same or similar profile as compared to the panel or door of existing troffer light fixture 207 when the door assembly 101 is installed and viewed from below.
Troffer housing 209 may also include slots for use with a panel or door as previously described. Troffer housing 209 can include one or more hinge slots 217. Hinge slots 217 are configured to accept a hinge portion (e.g., an extended flange) of the panel or door. For example, hinge slots 217 may include a first opening and a second smaller opening connected to the first opening. The hinge portion of the panel or door may be shaped so as to fit through the first opening, move down, and be prevented from exiting the hinge slot by the second smaller opening which is smaller than the hinge portion of panel or door. The panel or door can then be removed from troffer housing 209 by lifting the panel or door and removing the hinge portion from larger portion of hinge slot 217 (e.g., the first opening). Hinge slot 217 can be located on flange 215.
In some embodiments, two hinge slots 217 are included in troffer housing 209. Door assembly 101 of troffer door retrofit system 100 can include two hinges (e.g., extended flanges) such that door assembly 101 can be hung from hinge slots 217. In other embodiments, troffer housing 209 may include a different number of hinge slots 217. For example, one or three hinge slots 217 may be included. Continuing the example, troffer housing 209 may include no hinge slots 217. In such cases, door assembly 101 may include a corresponding number of hinges, or adaptor brackets 103 may be used to hang door assembly 101.
Troffer housing 209 can also include one or more latch slots 219. Latch slot 219 may be an opening in troffer housing 209 (e.g., an opening in flange 215). Latch slot 219 allows a hook portion of a latch on the panel or door to extend through troffer housing 209 and hook onto or otherwise interface with a portion of troffer housing 209. For example, a hook portion of a latch may extend through latch slot 219 from below and rotate vertically to rest on or engage a horizontal portion of troffer housing 209 (e.g., flanges 215).
In some embodiments, two latch slots 219 are included in troffer housing 209. Door assembly 101 of troffer door retrofit system 100 can include two latches (e.g., rotatable latches with a grip and hook portion) such that door assembly 101 can be latched to latch slots 219. In other embodiments, troffer housing 209 may include a different number of latch slots 219. For example, one or three latch slots 219 may be included. Continuing the example, troffer housing 209 may include no latch slots 219. In such cases, door assembly 101 may include a corresponding number of latches, or adaptor brackets 103 may be used to hang door assembly 101.
Referring now to
Referring now to
The frame components may be assembled or joined such that the frame provides structural support to door assembly 101. The frame may further provide one or more mounting points or surfaces for additional components of door assembly 101. Lower side frame 307 can be joined or attached to frame ends 317. This may form a square or rectangular frame on which other components are attached or joined. Latches 301 are attached or joined to lower side frame 307. Hinges 303 are attached or joined to the opposite lower side frame 307.
In some embodiments, door assembly 101 includes lens 305. Lens 305 can be transparent or translucent such that light emitted from a light source in door assembly 101 exits lens 305 to an area below door assembly 101. Lens 305 may enhance the performance of the retrofitted troffer light fixture. For example, lens 305 may be used to diffuse light, focus light, form one or more beams, filter light, and/or otherwise alter or manipulate light emitted from a light source included in door assembly 101. Alternatively, lens 305 may not substantially alter the light exiting lens 305. In further embodiments, lens 305 protects one or more components within door assembly 101. For example, lens 305 may limit access to LEDs included in door assembly 101.
Lens 305 can be supported by and/or attached to lower side frames 307 of door assembly 101. In some embodiments, lens 305 is removable from door assembly 101. This may allow access to one or more other components of door assembly 101. For example, removing lens 305 may provide access to lamps, supply wiring, electronics, controllers, and/or other components. This allows for replacement or repair of components (e.g., replacing lamps). In some embodiments, lens 305 may rest on a portion of lower side frames 307 and/or frame ends 317. Lens 305 may be made of a deformable material (e.g., is plastically deformable) such that lens 305 may be deformed and removed from the frame of door assembly 101. Lower side frames 307 and/or frame ends 317 may include a track or channel which lens 305 is inserted into. This may secure lens 305. In alternative embodiments, lens 305 may be mounted on one or more hinges and/or include one or more latches or other features which non-permanently secure lens 305 in the frame of door assembly 101. This may allow lens 305 to be opened and provide access to internal components of door assembly 101.
Lens 305 may be made of a transparent or translucent material. In some embodiments, lens 305 is made of glass or another ceramic material. In other embodiments, lens 305 is made of acrylic or polycarbonate. Alternatively, lens 305 may be made of other polymers or plastics. In alternative embodiments, lens 305 may be a louver. In further alternative embodiments, door assembly 101 does not include a lens 305.
Referring now to
In some embodiments, upper side frame 309 and/or top portion 311 are configured to reflect light from within door assembly 101 out through lens 305. For example, one or more of upper side frame 309 and/or top portion 311 may be coated with a reflective material on the side facing lens 305. Alternatively, one or more of upper side frame 309 and/or top portion 311 may be constructed of a reflective material (e.g., a metal). In still further embodiments, door assembly 101 uses troffer housing 209 of existing troffer light fixture 207 as a reflector. For example, door assembly 101 may not include upper side frames 309, may not include top portion 311, or upper side frames 309 and/or top portion 311 may include an opening to troffer housing 209 of existing troffer light fixture 207.
Referring now to
In alternative embodiments, the LEDs may be located elsewhere in or on the housing of door assembly 101. For example, the LEDs may be mounted on the side of top portion 311 facing troffer housing 209. The LEDs may extend through one or more openings in top portion 311 and into the interior of the housing of door assembly 101. As an additional example, the LEDs may be mounted on one or more of upper side frame 309. Alternatively, the LEDs may be mounted on a brace member (not illustrated) located within the housing of door assembly 101 and above lens 305. LEDs may be positioned to emit light towards lens 305 and/or towards top portion 311 and/or upper frame side 309 (e.g., these components may act as reflectors as previously described).
In other embodiments, the light source may be a lamp such as a florescent lamp or incandescent lamp. The light source may be attached to one or more components of door assembly 101 such that light is emitted within the housing and exits through lens 305. For example, the light source may be attached to the inside of top portion 311. The light source may be attached with hardware such as lamp holders. Ballast, controllers, and/or other electronics for use with the light source may be located between cover 313 and top portion 311.
Still referring to
In some embodiments, door assembly 101 may include a single housing which is produced as one piece of material. For example, a housing (e.g., including lower side frame 307, upper side frame 309, frame ends 317, top portion 311, and/or other components) may be a single component made by stamping, machining, printing, extruding, casting, injection molding, and/or other manufacturing techniques.
Referring now to
Lower side frames 307 and/or frame ends 317 may include channels. The channels may give the appearance that door assembly 101 is flush with T-bar 201 when installed. Lower side frames 307 may also include a flange or other horizontal surface for receiving and/or supporting lens 305. Flanges may be included in other components and used for a variety of purposes. For example, flanges may provide additional strength to components (e.g., acting as a U beam). As an additional example, flanges may provide a surface on which to apply adhesives, spot weld two components, or otherwise facilitate the joining of two components or the attachment of one component to another.
Referring generally to
Alternative embodiments of door assembly 101 are possible. In some embodiments, troffer door assembly 101 includes a variety of sizes. For example, troffer door assembly 101 may be sized to fit 2×2, 2×4, 1×4, or other size ceiling grid openings. In further embodiments, components of troffer door assembly 101 vary. For example, lens 305 can be a flat lens, contour lens, or combination lens (e.g., segmented lens). The height, geometry (e.g., trapezoidal, rectangular, etc.), and/or configuration of troffer door assembly 101 may also vary. For example, cover 313 may be located on a side rather than the top of troffer door assembly 101.
Referring now to
Referring further to
In some embodiments, adaptor bracket 601 includes lip 603. Lip 603 can engage with an end or flange of troffer housing 209. Lip 603 can prevent adaptor bracket 601 from sliding horizontally and away from T-bar 201. Troffer housing 209 may push against lip 603 in the direction of T-bar 201.
Referring further to
In alternative embodiments, side 607 may be at an angle to channel 605. This may allow channel 605 to be narrower (e.g., approximately the width of the end or flange of troffer housing 209). Side 607 can extend vertically and horizontally such that slot 609 is positioned within troffer housing 209. In further alternative embodiments, side 607 may be at a downward angle relative to channel 605. This may lower slot 609 relative to troffer housing 209 of existing troffer light fixture 207. Advantageously, this may provide more clearance for door assembly 101 to fit at least partially within troffer housing 209 when hung and closed. This may make troffer door retrofit system 100 compatible with a wider variety of existing troffer light fixtures 207.
Slot 609 is configured to accept hinge 303 of door assembly 101 such that door assembly 101 can be hung from adaptor bracket 601 using slot 609. Slot 609 is configured to have a large opening and a small opening. As previously described, the large portion of the opening allows hinge 303, including an extended portion of the hinge, to be inserted through slot 609. Slot 609 also includes a smaller portion. When hinge 303 is lowered after being inserted into slot 609, the smaller portion of slot 609 prevents hinge 303 from exiting slot 609 (e.g., an extended portion of hinge is larger than the smaller opening of slot 609).
Slot 609 also extends to and into latch surface 611. Latch surface 611 is a horizontal surface onto which a hook portion of latch 301 engages. The hook portion of latch 301, when engaged, cannot exit slot 609 due to interference of latch surface 611. When latch 301 is in a disengaged position, the hook portion is rotated vertically and can exit slot 609.
In alternative embodiments, latch surface 611 is at an angle to side 607. In further alternative embodiments, slot 609 does not extend into latch surface 611. For example, latch surface 611 may contain, be made of, or include magnetic material or a magnet. Latch 301 may include a magnet as previously described for securing door assembly 101 to adaptor bracket 601.
In some embodiments, adaptor bracket 601 further includes flange 613. Flange 613 may extend at a downward angle from latch surface 611. Flange 613 may prevent accidental removal of hinge 303 from slot 609 by partially overhanging slot 609 and limiting access thereto. In other embodiments, adaptor bracket 601 does not include flange 613.
Still referring to
To provide for air returns or air supply to or from the plenum space in the ceiling system, adaptor bracket 601 can be vented. Latch surface 611 and/or flange 613 may run for only a portion of the length of adaptor bracket 601 to provide for venting. When hung using hinges 303, latches 301, and the corresponding slots 609 and latch surfaces 611 of adaptor brackets 601, door assembly 101 may be separated from adaptor bracket 601 by a distance. In some embodiments, this distance is substantially the width of attachment surface 611 and/or flange 613. Therefore, in embodiments in which latch surface 611 and/or flange 613 do not run the entire length of adaptor bracket 601, a vent space is created between door assembly 101 and adaptor bracket 601. Advantageously, this vent space may be used as an air supply or air return for use in a plenum ceiling system (e.g., for return of room air and/or supply of conditioned air in a heating ventilation and/or air conditioning system). This feature of some embodiments of troffer door retrofit system 100 can be used to add additional supplies or returns when retrofitting existing troffer light fixtures 207 of a plenum ceiling system. This feature can also be used to retrofit existing troffer light fixtures 207 which include a supply or return for use in a plenum ceiling system.
In alternative embodiments, lip 603 of adaptor bracket 601 engages with T-bar 201. For example, lip 603 may be or include a hook which engages the vertical portion of T-bar 201. The hook portion of lip 601 may slip over the vertical portion of T-bar 201. Advantageously, this may prevent adaptor bracket 601 from moving horizontally relative to T-bar 201. Furthermore, adaptor bracket 601 may be held in place by the hook portion without relying on or using the weight of troffer housing 209 to secure adaptor bracket 601.
In other alternative embodiments, adaptor bracket 601 does not rest on or connect to T-bar 201. For example, adaptor bracket 601 may be mounted to troffer housing 209 of an existing troffer light fixture 207. Adaptor bracket 601 may include a hook, latch or other mechanism to attach adaptor bracket 601 to troffer housing 209 using existing slots in troffer housing 209.
Referring now to
The installer can remove the door of the existing troffer light fixture 207 (503). In some embodiments, the installer removes the door after disconnecting the power. In alternative embodiments, the installer removes the door prior to turning off the power. As previously described herein, the existing troffer light fixture 207 can include a door. The door may be or include the lens or a louver of the existing troffer light fixture 207. Removing the door can include unlatching the door from the troffer housing 209 of the existing troffer light fixture 207. Removing the door can also include unhinging the door from the troffer housing 209. For example, the hinges of the door may be lifted out of slots included in the troffer housing 209.
The installer may determine if clearance in the housing 209 of the existing troffer light fixture 207 is sufficient to permit installation of door assembly 101 (505). This can include taking one or measurements. This may also or alternatively include consulting an instruction manual with instructions for retrofitting a particular existing troffer light fixture 207. For example, the instruction manual may have been prepared with the knowledge of the clearances of many types of existing troffer light fixtures 207. Based on the particular make or model of the existing troffer light fixture 207 being retrofit, the instructions may instruct the installer that clearance does or does not permit installation of door assembly 101 without removing one or more components of existing troffer light fixture 207.
If clearance does not permit installation of door assembly 101, the installer can remove lamps, a ballast cover, and/or the ballast of existing troffer light fixture 207 (507). Removing these components, a subset of these components, and/or other components of existing troffer light fixture 207 can provide sufficient clearance for the installation of door assembly 101.
If clearance does permit installation of door assembly 101, lamps, a ballast cover, ballast, and/or other components of existing troffer light fixture 207 may be left within troffer housing 209.
The installer can hang the door assembly 101 from the existing troffer housing 209 (509). As previously described herein, the hinges 303 of door assembly 101 can be configured to operate with slots of a troffer housing 209 of the existing troffer light fixture 207. Hanging door assembly 101 from the troffer housing 209 can include inserting hinges 303 of the door assembly 101 into a slot on troffer housing 209. Door assembly 101 can then be lowered such that hinges 303 do not exit the slots in troffer housing 209.
The installer can wire door assembly 101 to a power supply for the existing troffer light fixture 207 (511). This can include first removing power supply wires from the ballast or another component of the existing troffer light fixture 207. The power supply wires may then be wired (e.g., joined to, using a twist-on wire connector) to a power supply wire for door assembly 101. The power supply wire for door assembly 101 may be extending from a cover 313, electronics housing, or other portion of door assembly 101. The installer may also complete any wiring for other components of door assembly 101. For example, the installer may wire other electronics of door assembly 101 such as controllers and sensors to existing or newly installed components related to existing troffer light fixture 207. Alternatively, door assembly 101 can be wired to already existing components such as controllers or sensors included in or related to existing troffer light fixture 207.
The installer can close door assembly 101 and secure latches 301 of door assembly 101 (513). This can include positioning latches 301 of door assembly 101 in the disengaged position. The door assembly 101 can be closed by pivoting it on hinges 303. As door assembly 101 is closed, latches 301 can enter slots included in troffer housing 209. The latches can then be positioned in a closed position such that latches 301 interact with troffer housing 209 to prevent door assembly 101 from opening.
If at any point prior to or during the performance of method 500, the installer determines that the hinges 303 and/or latches 301 of door assembly 101 do not align with or are otherwise incompatible with troffer housing 209 of existing troffer light fixture 207, the installer may use adaptor brackets 103 to perform the retrofit. Additionally, if the installer determines that there is insufficient clearance even after removing components of existing troffer light fixture 207, the installer can use adaptor brackets 103 to perform the retrofit.
As described above and elsewhere herein, an existing troffer light fixture 207 can be retrofit using only door assembly 101. In other embodiments described later and elsewhere herein, an existing troffer light fixture 207 can be retrofit using adaptor bracket 103 as well. Advantageously, either method of retrofitting can be performed without the use of tools. For example, no fasteners, drills, screwdrivers, wire cutters, or other tools are required to complete the retrofit. In some embodiments, even the twist-on wire connector may be salvaged from existing troffer light fixture 207. In one embodiment, no tools are required to attach any component (e.g., adaptor bracket 103) to troffer housing 209 of existing troffer light fixture 207. Advantageously, retrofitting without the use of tools may decrease the time taken to perform the retrofit. This may reduce costs and/or otherwise speed up the retrofitting of one or a plurality of existing troffer light fixtures 207. The retrofit methods described herein may also allow for retrofitting of an existing troffer light fixture 207 without disruption of existing ceiling tiles and/or without the removal of existing fixtures. This may reduce the complexity and/or risk of damage from the retrofit process.
Referring now to
In some embodiments, door assembly 101 does not include hinges 303 and/or latches 301. As described in greater detail with reference to
Still referring to
In alternative embodiments, door assembly 101 includes fewer components than illustrated and previously described with reference to
Referring now to
In one embodiment, door assembly 101 is secured to existing troffer light fixture 207 by screwing screw system 701 through door assembly 101 and into existing troffer light fixture 207 (e.g., troffer housing 209). Screw system 701 may pass through a hole in door assembly 101 with a diameter that allows screw threads but not a screw head and/or washer to pass through. Alternatively, screw system 701 can penetrate door assembly 101 (e.g., top portion 311) during the installation process.
Lens 305 of door assembly 101 may be removable to provide access for screwing screw system 701 through door assembly 101 and into troffer housing 209 and/or another component of existing troffer light fixture 207. Prior to screwing screw system 701 through door assembly 101 and into existing troffer light fixture 207, one or more components of existing troffer light fixture 207 may be removed as described with reference to
Referring now to
Sleeve 705 is configured to attach to screw portion 703. Sleeve 705 includes threads 711 which are on an internal surface of sleeve 705. Sleeve 705 is hollow which allows sleeve 705 to be screwed onto screw portion 703. Threads 709 of screw portion 703 and threads 711 of sleeve 705 engage with each other. Advantageously, this allows the total height of screw system 701 to be adjusted. The height may be decreased by screwing sleeve 711 further onto screw portion 703. An installer or user can screw portion 703 into a receiving component (e.g., troffer housing 209). The installer or user can then thread sleeve 705 onto screw portion 703 to a depth where door assembly 101 will be flush to the ceiling system (e.g., ceiling tiles and/or troffer housing 209) when connected to screw system 701. The installer or user can make adjustments as desired by threading sleeve 705 on or off screw portion 703.
Door assembly 101 is attached to screw system 701 using sleeve 705 and receiver 707. Sleeve 705 can include protrusion 713. Receiver 707 can include receptacle 715. Door assembly 101 and receiver 707 can be pushed onto sleeve 705 such that protrusion 713 enters receiver 707 and is secured by receptacle 715. Protrusion 713 can be made of a plastically deformable material (e.g., plastic, rubber, or other material). Protrusion 713 is compressed while entering the narrower mouth of receiver 707 and expands to fill the wider region formed by receptacle 715. This removably secures receiver 707 and door assembly 101 to screw system 701 which is in turn mounted to troffer housing 209 and/or other components in a ceiling system. Door assembly 101 can be removed from screw system 701 (e.g., sleeve 705) by pulling with sufficient force that protrusion 713 deforms and exits receiver 707. Screw system 701 can be adjusted (e.g., sleeve 705 moved up or down by threading or unthreading it from screw portion 703) and door assembly 101 can be reattached to screw system 701 using sleeve 705 and receiver 707. In alternative embodiments, other systems, devices, and/or components are used to attach door assembly 101 to screw system 701 or a portion thereof.
Screw system 701 advantageously allows for door assembly 101 to be mounted to existing troffer light fixtures 207, components thereof, and/or other portions of a ceiling system without screwing through door assembly 101. Additionally, screw system 701 allows for door assembly 101 to be removably mounted to existing troffer light fixtures 207, components thereof, and/or other portions of a ceiling system.
Referring now to
Referring now to
In one embodiment, pressure fit system 801 is a tab or other protrusion which is plastically or otherwise deformable. As door assembly 101 is inserted into troffer housing 209, pressure fit system 801 contacts troffer housing 209 and deforms. The contact between pressure fit system 801 and troffer housing 209 supports door assembly 101 using the resulting friction force. In alternative embodiments, pressure fit system 801 includes one or more components which secure pressure fit system 801 against troffer housing 209.
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In some embodiments, friction plate 805 is fixedly attached to support 803. For example, friction plate 805 may be welded to support 803. In further embodiments, friction plate 805 and support 803 may form a single component. For example, a single component including friction plate 805 and support 803 may be cast, milled, and/or injection molded. Advantageously, the shape of support 803 and friction plate 805 may be configured to function as an additional spring mechanism. For example, friction plate 805 may slope away from support 803 such that it springs towards its original position when compressed against troffer housing 209. Friction plate 805 and/or support 803 may be constructed of a material which is plastically deformable allowing friction plate 805 and/or support 803 to function as a spring as described herein. For example, support 803, friction plate 805, and/or other components of pressure fit system 801 may be or include one or more of metals (e.g., aluminum, steel, alloys, and/or other metals), plastics, and/or other plastically deformable materials. In some embodiments, pressure fit system 801 does not include spring 807.
In alternative embodiments, friction plate 805 is attached to support 803 with some degree of motion possible. For example, friction plate 805 may be attached to support 803 using a hinge. In further embodiments, friction plate 805 may be bolted to support 803 such that friction plate 805 can pivot on the bolt towards and/or away from door assembly 101.
In some embodiments, spring 807 provides friction force by pushing friction plate 805 away from support 803 and door assembly 101 and into contact with troffer housing 209. Spring 807 may be permanently attached to one or more of support 803 and friction plate 807. For example, spring 807 may be welded or glued to support 803 and/or friction plate 807. In other embodiments, spring 807 may be secured in place by its own geometry. For example, support 803 and/or friction plate 805 may include one or more receiving structures such as a hollow cylinder which encompass or receive one end of spring 807. The resistance to compression of spring 807 may keep spring 807 inserted into the one or more receiving structures keeping spring 807 in place.
In one embodiment, spring 807 is a coil spring. In various other embodiments, spring 807 is various other types of springs. For example, spring 807 may be a leaf, torsion, or other type of spring. In still further embodiments, spring 807 may be a plastically deformable material placed between support 803 and friction plate 805. For example, spring 807 may be a piece of rubber or plastic placed between support 803 and friction plate 805 configured to provide resistive force when compressed.
In some embodiment, friction plate 805 includes friction material 809. Friction material 809 may be any material with a high coefficient of friction. For example, friction material 809 may be rubber, friction tape, or other material or geometry for gripping troffer housing 209. Friction material 809 may be coupled to friction plate 805 using one or more techniques or substances such as adhesives, sonic welding, etc. In alternative embodiments, friction plate 805 has a geometry or surface roughness which creates a high coefficient of friction.
In some embodiments, pressure fit system 801 includes attachment structure 811. Attachment structure 811 allows for the attachment of pressure fit system 801 to door assembly 101. Attachment structure 811 can be attached to door assembly 101 using techniques and/or hardware such as welding, rivets, nuts and bolts, screws, and/or other coupling systems or methods. In alternative embodiments, pressure fit system 801 is an integral portion of door assembly 101. In some embodiments, support 803 and/or the position of friction plate 805 on support 803 is height adjustable. For example, support 803 may be telescoping with protrusions, an interference fit, and/or other mechanisms which secures or locks the height of support 803. In alternative embodiments, friction plate 805 can be adjusted relative to support 803 to set the height of friction plate 805.
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In one embodiment, magnets 903 are included at each corner of door assembly 101. In other embodiments, magnet system 901 has a different number of magnets 903 and/or magnets 903 at other locations on door assembly 101. For example, magnets 903 may be located on one or more of lower side frame 307, upper side frame 309, top portion 311, and/or other locations. In one embodiment, magnets 903 are located on top portion 311 at locations 905. In still further embodiments, door assembly includes flange 909. Flange 909 extends from door assembly 101. In some embodiments, flange 909 is or functions as trim as explained in greater detail with reference to
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In alternative embodiments, magnets 903 are located in locations 907 on flanges 909. This positions magnets 903 below T-bars 201. When in close proximity to or in contact with a magnetic T-bar 201 or a second magnet or ferromagnetic material attached to T-bar 201, magnets 903 secure door assembly 101 to T-bar 201. In further alternative embodiments, magnets 903 can be located at one or more of the locations described herein. For example, magnets 903 can be located on the side of door assembly 101 as well as in portions 907.
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In various embodiments, biting teeth 1003 are located in various locations in or on door assembly 101. In one embodiment, biting teeth 1003 are located at the four corners of door assembly 101. In alternative embodiments, biting teeth 1003 are located at positions 1005 on top portion 311 of door assembly 101. Various numbers of biting teeth 1003 can be located at various locations of door assembly 101 in alternative embodiments.
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In one embodiment, biting teeth 1003 include one or more of point 1007, edge 1009, notches 1011, and/or attachment structure 1013. Point 1007 may be a partial or complete reduction in the cross section of biting teeth 1003. Point 1007 assists in puncturing the support structure with biting teeth 1003. Point 1007 may reduce the force applied by a user or installer to insert and secure door assembly 101 using biting fit teeth system 1001.
Biting teeth 1003 may include one or more edges 1009. Edges 1009 can be sharpened portions, serrated portions, or portions otherwise configured for cutting. Edges 1009 may reduce the force applied to puncture the support structure (e.g., troffer housing 209). Edges 1009 and/or other portions of biting teeth 1003 can include notches 1011. Notches 1011 prevent biting teeth 1003 from becoming disengaged from the support structure (e.g., troffer housing 209). One or more notches 1011 can be inserted through the support structure as biting teeth 1003 puncture the support structure. Notches 1011 then interfere with the support structure to prevent biting teeth from disengaging with the support structure.
In some embodiments, biting teeth 1003 include attachment structure 1013. Attachment structure 1013 allows for the attachment of biting teeth 1003 to door assembly 101. Attachment structure 1013 can be attached to door assembly 101 using techniques and/or hardware such as welding, rivets, nuts and bolts, screws, and/or other coupling systems or methods. In alternative embodiments, biting teeth 1003 are an integral portion of door assembly 101.
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In alternative embodiments, flanges 1103 and/or edges 1105 are configured to support door assembly 101 against troffer housing 209 of existing troffer light fixture 207 and/or other portions of a ceiling system. Flanges 1103 and edges 1105 can be inserted past features of troffer housing 209 and/or other features while contracting and then expand to support door assembly 101 as described with reference to T-bars 201.
In one embodiment, flange system 1101 includes a flange 1103 on each side of door assembly 101. In alternative embodiments, a subset of the sides of door assembly 101 include flanges 1103. For example, two opposite sides of door assembly 101 can include flanges 1103 with the other sides not including flanges 1103. Flanges 1103 can be attached to door assembly 101. For example, flanges 1103 can be welded, attached with adhesive, attached with fasteners (e.g., screws, nuts and bolts, rivets, and/or other fasteners), and/or otherwise attached to door assembly 101. In alternative embodiments, flanges 1103 are integral part of door assembly 101. For example, flanges 1103 can form a portion of lower side frame 307.
Flanges 1103 have a geometry and/or are made from a material which allows flanges 1103 to plastically deform and support the weight of door assembly 101. Flanges 1103 may have varying cross sections, channels, dimensions, and/or other characteristics in varying embodiments. In some embodiments, flanges 1103 are constructed of the same material as one or more components of door assembly 101. In alternative embodiments, flanges 1103 are constructed of materials different from those of door assembly 101. In one embodiment, flanges 1103 are constructed of a metal. For example, flanges 1103 may be constructed using aluminum, steel, alloys, and/or other metals. In alternative embodiments, flanges 1103 may be constructed using materials such as plastics, polymers, natural materials, and/or other materials.
Flanges 1103 can be connected with flexible portion 1107. Flexible portion 1107 allows flanges 1103 to deform towards door assembly 101 while being inserted without interfering with one another. Flanges 1103 can deform until they are flush with door assembly 101 in some embodiments. Advantageously, when flanges 1103 return to their original shape and/or otherwise expand away from door assembly 101 after being inserted past T-bars 201, flexible portion 1107 expands with flanges 1103. Flexible portion 1107 can function as a skirt. Flexible portions 1107 may be made of a flexible materials such as rubber, a polymer, cloth, plastic, and/or other materials. Flexible portions 1107 may assist in sealing door assembly 101 to T-bars 201 and/or prevent contaminants, water, or other material from entering the ceiling system. Flexible portion 1107 can give the illusion from below that flanges 1103 extend from door assembly 101 and completely overlap with T-bars 201 or other supporting structures. This provides an aesthetically pleasing appearance as explained in greater detail with reference to
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In one embodiment, trim 1201 includes panels 1203 extending from door assembly 101. Panels 1203 are included on each side of door assembly 101. In some embodiments, four panels 1203 are attached to door assembly 101. Panels 1203 are configured to meet with one another (e.g., panels 1203 can be mitered). Panels 1203 can be attached to door assembly 101 (e.g., at lower side frames 307 and frame ends 317) using one or more techniques and/or hardware such as welding, rivets, nuts and bolts, screws, and/or other techniques. In alternative embodiments, trim 1201 is made of a single panel 1203 which surrounds door assembly 101. In still further embodiments, panel(s) 1203 are an integral part of door assembly 101. For example, panel 1203 may be a portion of each lower side frame 307 and frame end 317 such that when lower side frames 307 and frame ends 317 are joined, trim 1201 is created.
Referring now to
In an alternative embodiment, panels 1203 extend both downward and out from door assembly 101. This allows trim 1201 to overlap with T-bars 201 passing under T-bars 201. Panels 1203 can include vertical portion 1205 and horizontal portion 1207.
In some embodiments, trim 1201 is adjustable. Trim 1201 can include panel 1203 and a clasp, shown as sliding portion 1204. Sliding portion 1204 may have a running fit with panel 1203 which allows sliding portion 1204 to be moved away from and/or towards door assembly 101. Advantageously, this allows trim 1201 to be configured by a user or installer to a desired size to fit one T-bar 201 of T-bars 201 of varying widths. Sliding portion 1204 can be kept in the desired location relative to panel 1203 due to friction between sliding portion 1204 and panel 1203, a positioning system such as protrusions on panel 1203 and a receiver of sliding portion 1204, and/or using other techniques. Trim 1201 including sliding portion 1204 can be in the same plane as T-bars 201 such that sliding portion 1204 comes into contact with T-bars 201 when extended. In alternative embodiments, sliding portion 1204 is positioned so as to overlap with T-bars 201.
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Edge panels 1303 form a frame of door assembly 101. In one embodiment, four edge panels 1303 are attached to create the frame. Edge panels can be attached using techniques and/or hardware such as welding, rivets, nuts and bolts, screws, and/or other coupling systems or methods. In alternative embodiments, a single panel 1303 forms the frame. A single panel can be formed using techniques such as injection molding, casting, extrusion, stamping, and/or other techniques. Panel(s) 1303 may be constructed of metals (e.g., aluminum, steel, alloys, etc.), plastics, and/or other materials. Lens 1305 and top panel 1301 can enclose the frame made of edge panels 1303. Top panel 1301 can support electronics enclosure 1307. The components can be made and/or attached using similar techniques and/or hardware. LEDs 1309 are attached to one or more vertical portions of panel(s) 1303 such that LEDs 1309 illuminate door assembly 101 and provide light through lens 1305 from the edge of door assembly 101 outward. LEDs 1309 may have primary light axes extending inward into a cavity defined by edge panels 1303. LEDs 1309 may illuminate lens 1305 from behind with a uniform distribution of light when engaged. The position of LEDs 1309 (e.g., disposed around at least a portion of the periphery of the housing, etc.) may provide a low-profile lighting arrangement configured to fit within a space above the ceiling system without jeopardizing light uniformity (e.g., relative to traditional systems involving LEDs coupled to a back panel of a housing and positioned close to a lens, etc.).
Edge lit door assembly 101 can provide one or more advantages over an overhead lit door assembly 101 (e.g., door assembly 101 as described in reference to
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In some embodiments, door assembly electronics 1601 include a power supply 1611. Power supply 1611 can be one or more electrical supply wires which enter cover 313. Power supply 1611 can include further components such as capacitors, modulators, transformers, batteries, and/or other components to regulate, alter, modify, or otherwise provide electrical power to door assembly electronics 1601 and/or LEDs in door assembly 101.
In some embodiments, door assembly electronics 1601 include driver 1609. Driver 1609 can be a driver for driving or otherwise providing power to LEDs within door assembly 101. Driver 1609 may be electrically coupled to one or more LEDs, LED strips, and/or other LEDs through wiring. The wiring may exit cover 313. Driver 1609 can control electrical power supplied to the LEDs using techniques such as pulse width modulation and/or other techniques. Driver 1609, by controlling the supply of electrical power to the LEDs, can control the light output of the LEDs. Driver 1609 can control the intensity of the light output from the LEDs, control the color temperature of light output by the LEDs, dim the LEDs, turn on or off the LEDs, and/or otherwise alter or control the light output from the LEDs. Driver 1609 can be coupled to control circuit 1603. Driver 1609 can be controlled by control circuit 1603.
In some embodiments, door assembly electronics 1601 include control circuit 1603. Control circuit 1603 may contain circuitry, hardware, and/or software for facilitating and/or performing the functions described herein. Control circuit 1603 may handle inputs, process inputs, run programs, handle instructions, route information, control memory 1607, control a processor 1605, process data, generate outputs, communicate with other devices or hardware, and/or otherwise perform general or specific computing tasks. In some embodiments, control circuit 1603 includes a processor 1605 and/or memory 1607. Control circuit 1603 can perform functions such as controlling driver 1609 in response to inputs, receiving inputs from transceiver 1613, receiving inputs locally (e.g., through a user interface, buttons, switches, etc.), receiving inputs from sensor circuitry 1615, controlling sensor circuitry 1615, controlling transceiver 1613 (e.g., sending or receive communications using transceiver 1613), and/or performing other functions related to door assembly 101 and/or other light fixtures or devices.
Processor 1605 may be implemented as a general-purpose processor, an application specific integrated circuit (ASIC), one or more field programmable gate arrays (FPGAs), a digital-signal-processor (DSP), a group of processing components, or other suitable electronic processing components. Memory 1607 is one or more devices (e.g. RAM, ROM, Flash Memory, hard disk storage, etc.) for storing data and/or computer code for facilitating the various processes described herein. Memory 1607 may be or include non-transient volatile memory or non-volatile memory. Memory 1607 may include database components, object code components, script components, or any other type of information structure for supporting various activities and information structures described herein. Memory 1607 may be communicably connected to processor 1605 and provide computer code or instructions to processor 1605 for executing the processes described herein. Memory 1607 and/or the control circuit 1603 may facilitate the functions described herein using one or more programming techniques, data manipulation techniques, and/or processing techniques such as using algorithms, routines, lookup tables, arrays, searching, databases, comparisons, instructions, etc.
In some embodiments, door assembly electronics 1601 include transceiver 1613. Transceiver 1613 may be a wireless transceiver used to send and/or receive wireless communications. For example, transceiver 1613 may be a transceiver which sends and/or receives radio frequency transmissions using protocols and/or hardware related to WiFi, Zigbee, Bluetooth, or other types of communication. In other embodiments, transceiver 1613 uses communication techniques other than the use of radio frequency transmissions. For example, transceiver 1613 may use ultrasound, optical, infrared, and/or other communications techniques. Transceiver 1613 can provide control signals to control circuit 1603. In response to control signals (e.g., sent from a control device such as a mobile phone, computer, remote, or other device), control circuit 1603 can control the light output of door assembly 101 using driver 1609. For example, control circuit 1603 can adjust the light intensity, color temperature, turn on or off LEDs, or otherwise change the light output of door assembly 101 using driver 1609.
In some embodiments, control circuit 1603 can control transceiver 1613 in order to transmit communication signals. Control circuit 1603 can transmit information, using transceiver 1613, related to the functions of door assembly 101, the light output of door assembly 101, and/or sensor information received by sensor circuitry 1615. For example, control circuit 1603 can cause the transmission of information, using transceiver 1613, including diagnostic information, whether door assembly 101 is currently on or off, the light intensity being produced by door assembly 101, whether motion has been detected by sensor circuitry 1615, and/or other information. In some embodiments, transceiver 1613 transmits this and/or other information to mobile phones, computers, remotes, and/or other devices. In further embodiments, transceiver 1613 transmits this information to one or more other door assemblies 101.
In some embodiments, door assembly electronics 1601 includes sensor circuitry 1615. Sensor circuitry 1615 can be controlled by control circuit 1603. Sensor circuitry 1615 can also provide sensor information and/or control signals to control circuit 1603. Sensor circuitry 1615 may include one or more logic modules 1617, memory 1619, and/or sensors 1621. Sensor circuitry 1615 can use these and/or other components to provide door assembly electronics 1601 information regarding the environment in which door assembly 101 operates. For example, sensor circuitry 1615 can detect motion with a motion sensor. In response to detecting motion (e.g., using a motion sensor 1621 and processing the data using memory 1619 and/or logic module 1617), sensor circuitry 1615 can provide the information and/or a control signal to control circuit 1603 which causes control circuit 1603 to take action (e.g., turning on one or more LEDs, adjusting the intensity and/or color temperature of the light output, etc.). As an additional example, sensor circuitry 1615 can determine the intensity or amount of light surrounding door assembly 101. In response to determining the amount or intensity of light (e.g., using a light sensors 1621, memory 1619, a threshold value and/or logic module 1617), sensor circuitry 1615 can provide the information and/or a control signal to control circuit 1603 which causes control circuit 1603 to take action (e.g., adjust the light output using driver 1609 to compensate for low light by increasing the light output, decreasing the light output in response to high levels of ambient light, etc.).
Sensor circuitry 1615 may contain circuitry, hardware, and/or software for facilitating and/or performing the functions described herein. Sensor circuitry 1615 may handle inputs, process inputs, run programs, handle instructions, route information, control memory 1619, control or use a logic module 1617, process data, generate outputs, communicate with other devices or hardware, and/or otherwise perform general or specific computing tasks. Sensor circuitry 1615 can be or include an application specific integrated circuit (ASIC), one or more field programmable gate arrays (FPGAs), a digital-signal-processor (DSP), a group of processing components, or other suitable electronic processing components. Memory 1619 is one or more devices (e.g. RAM, ROM, Flash Memory, hard disk storage, etc.) for storing data and/or computer code for facilitating the various processes described herein. Memory 1619 may be or include non-transient volatile memory or non-volatile memory. Memory 1619 may include database components, object code components, script components, or any other type of information structure for supporting various activities and information structures described herein. Memory 1619 may provide computer code or instructions for executing the processes described herein. Memory 1619 and/or the sensor circuitry 1615 may facilitate the functions described herein using one or more programming techniques, data manipulation techniques, and/or processing techniques such as using algorithms, routines, lookup tables, arrays, searching, databases, comparisons, instructions, etc.
Logic module 1617 may be implemented as hardware and/or software. Logic module 1617 may be stored in or use memory 1619. Logic module 1617 can provide code or instructions for carrying out or facilitating the functions of sensor circuitry 1615 described herein. Alternatively, logic module can carry out these functions directly. Logic module 1617 can be used to perform tasks such as comparing sensor data to threshold values, determining if movement has occurred using a variety of techniques, measuring ambient light, comparing ambient light measurements to threshold values, formatting control signals for control circuit 1603, and/or performing other tasks or functions to facilitate the operation of door assembly 101 as described herein.
In some embodiments, sensor circuitry 1615 includes one or more sensors 1621. Sensors 1621 can be any type of sensor. In one embodiment, sensor 1621 is or includes a motion sensor. For example, sensor 1621 may be or include an infrared motion sensor, ultrasound motion sensor, projected capacitance motion sensor, and/or other type of motion sensor. In other embodiments, sensor 1621 can be or include a light sensor. For example, sensor 1621 may be or include a photodetector, bolometer, photoresister, or other light sensor. In still further embodiments, sensor 1621 can be or include other types of sensors such as temperature sensors, humidity sensors, and/or other sensors. Sensor 1621 may be located partially or wholly outside of cover 313.
The present disclosure contemplates methods, systems, and program products on any machine-readable media for accomplishing various operations. The embodiments of the present disclosure may be implemented using existing computer processors, or by a special purpose computer processor for an appropriate system, incorporated for this or another purpose, or by a hardwired system. Embodiments within the scope of the present disclosure include program products including machine-readable media for carrying or having machine-executable instructions or data structures stored thereon. Such machine-readable media can be any available media that can be accessed by a general purpose or special purpose computer or other machine with a processor. By way of example, such machine-readable media can include RAM, ROM, EPROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to carry or store desired program code in the form of machine-executable instructions or data structures and which can be accessed by a general purpose or special purpose computer or other machine with a processor. When information is transferred or provided over a network or another communications connection (either hardwired, wireless, or a combination of hardwired or wireless) to a machine, the machine properly views the connection as a machine-readable medium. Thus, any such connection is properly termed a machine-readable medium. Combinations of the above are also included within the scope of machine-readable media. Machine-executable instructions include, for example, instructions and data which cause a general purpose computer, special purpose computer, or special purpose processing machines to perform a certain function or group of functions.
Although the figures may show a specific order of method steps, the order of the steps may differ from what is depicted. Also two or more steps may be performed concurrently or with partial concurrence. Such variation will depend on the software and hardware systems chosen and on designer choice. All such variations are within the scope of the disclosure. Likewise, software implementations could be accomplished with standard programming techniques with rule based logic and other logic to accomplish the various connection steps, processing steps, comparison steps and decision steps.
While various aspects and embodiments have been disclosed herein, other aspects and embodiments will be apparent to those skilled in the art. The various aspects and embodiments disclosed herein are for purposes of illustration and are not intended to be limiting, with the true scope and spirit being indicated by the following claims.
This application claims the benefit of U.S. Provisional Patent Application Nos. 62/056,262, filed Sep. 26, 2014, and 62/056,294, filed Sep. 26, 2014, both of which are incorporated herein by reference in their entireties.
| Number | Name | Date | Kind |
|---|---|---|---|
| 4041657 | Schuplin | Aug 1977 | A |
| 8083369 | Richardson | Dec 2011 | B1 |
| Number | Date | Country | |
|---|---|---|---|
| 62056294 | Sep 2014 | US | |
| 62056262 | Sep 2014 | US |
