The subject matter described herein relates to lighting fixtures. More particularly, the subject matter described herein relates to recessed lighting fixtures for mounting within a wall or ceiling.
A recessed light or downlight is a lighting fixture that is installed into a hollow opening in a ceiling or wall. A large percentage of residential recessed lighting fixtures include a metal cylinder (“can”) mounted into the ceiling using horizontal metal struts attached to the ceiling framework. A light bulb socket is mounted within the cylinder, into which a light bulb can be inserted. The light bulb is commonly a 60 W incandescent light bulb or a 15 W compact fluorescent bulb. This arrangement provides structural support and the electrical connection for the light bulb installed. Further, the cylinder can be substantially airtight around the sides and top to prevent the loss of ambient heat or cooling from the room into the ceiling cavity through the fixture, and the cylinder can shield the light bulb from any insulation placed around the can within the ceiling cavity to help prevent the light bulb from starting a fire.
An insert can be installed into the can to provide a better fit for the light bulb, to reflect at least some of the light directed into the fixture, or to simply improve the aesthetic appearance of the lighting fixture. This insert is often referred to as a trim portion. By modifying the basic arrangement in this way, a single fixture can be adapted for use with a wide variety of shapes and styles of lighting elements. The ability to modify the fixture is not limited to using different trim portions to accommodate different incandescent light bulbs, though. For instance, U.S. Patent Application Pub. No. 2007/0279903 to Negley et al. discloses a lighting device containing a group of solid state light emitters (e.g., light-emitting diodes) that can be used in the kind of standard residential recessed lighting fixture discussed above.
Unfortunately, the generally standardized and easily modified design of residential recessed lights is not carried over to the commercial lighting market. Because many commercial applications involve lighting being recessed in drop ceilings, there is generally no contact with insulation and thus there is not necessarily a need for a cylindrical can to be included in the fixture. Rather, a lighting fixture rough-in can be installed. As will be understood by those having skill in the art, a lighting fixture rough-in is a base structural component that can be mounted between ceiling joists or other structural members of a commercial drop ceiling and that serves as a frame to provide support for the components of the lighting fixture. For example, a lighting fixture rough-in of this kind can often simply include a frame, often referred to as a “pan”, mounted into the ceiling using horizontal metal struts attached to the ceiling framework. An example of a typical lighting fixture rough-in of this kind is shown in
As is shown in
Thus, whereas residential fixtures can generally be easily adapted for use with a wide variety of light bulbs or other lighting elements, the options for the kinds of lighting elements that can be used with these can-less commercial fixtures are often limited by the specific configuration of the lighting fixture rough-in.
According to the present disclosure, novel assemblies for use in lighting fixtures are provided for adapting unfinished lighting fixture rough-ins to receive a lighting element, such as an incandescent light bulb or a light-emitting diode (LED) lighting device.
In one aspect, the present disclosure provides a universal adapter for connecting an LED lighting module to a commercial lighting fixture rough-in. The universal adapter can include an adapter body positioned within a lighting fixture rough-in for receiving an LED lighting module. In addition, the present disclosure also provides a method for adapting a lighting fixture rough-in for use with an LED lighting module. The method can include providing a universal adapter having an adapter body, positioning the adapter body within the lighting fixture rough-in, inserting an LED lighting module into the adapter body, and connecting the LED lighting module to a power source.
In another aspect, the present disclosure provides a universal adapter for connecting a lighting element to a commercial lighting fixture rough-in. The universal adapter can include an adapter body positioned within a lighting fixture rough-in, an adapter socket positioned in the adapter body, and an electrical connector operatively connected to the adapter socket. The adapter body can be adapted for receiving a lighting element, the adapter socket can serve to secure the lighting element within the adapter body, and the electrical connector can serve to electrically connect the adapter socket to a power source.
Further, the present disclosure also provides a method for adapting a lighting fixture rough-in for use with a lighting element. This method can involve providing a universal adapter having an adapter body, an adapter socket positioned in the adapter body, and an electrical connector operatively connected to the adapter socket. The method can further involve positioning the adapter body within the lighting fixture rough-in and connecting a lighting element to the adapter socket.
The present invention may be more fully understood with reference to the accompanying drawings and the following detailed description.
Preferred embodiments of the subject matter described herein will now be explained with reference to the accompanying drawings of which:
a-6f illustrate steps in the installation of a universal adapter to a lighting fixture rough-in according to the subject matter disclosed herein; and
Lighting fixtures are described herein with reference to
Furthermore, relative terms such as “on” or “above” are used herein to describe one structure's or portion's relationship to another structure or portion as illustrated in the Figures. It will be understood that relative terms such as “on” or “above” are intended to encompass different orientations of the device in addition to the orientation depicted in the Figures. For example, if the device in the Figures is turned over, structure or portion described as “above” other structures or portions would now be oriented “below” the other structures or portions. Likewise, if the device in the Figures is rotated along an axis, structure or portion described as “above” other structures or portions would now be oriented “next to” or “left of” the other structures or portions. Like numbers refer to like elements throughout.
According to one aspect of the subject matter disclosed herein, a universal adapter is provided for connecting a lighting element to a lighting fixture rough-in, such as a typical lighting fixture rough-in described above. Referring to
Adapter body 32 can include at least a first end and a second end and can be configured to be used with a lighting element 60 by being open at one end for receiving lighting element 60. For instance, adapter body 32 can have a substantially cylindrical shape similar to the shape of the cylindrical can formed in many residential lighting fixtures. Adapter socket 40 can be secured to one end of the cylindrical adapter body 32, and the opposite end of the cylindrical adapter body 32 can be an open end 33 for receiving lighting element 60. Therefore, adapter body 32 can be used to modify a commercial lighting fixture rough-in 10 to emulate the universal can of residential downlight fixtures. As such, a wide variety of light bulbs can be used in the adapted lighting fixture, even those for which a corresponding finishing section 16 designed to fit in aperture 14 does not exist. Specifically, an LED lighting device adapted for use with standard residential downlight fixtures can be received in adapter body 32 to be used in lighting fixture rough-in 10.
One example of such an LED device is the LR6 downlight retrofit element sold by Cree LED Lighting Solutions, Inc., a subsidiary of Cree, Inc. of Durham, N.C. The LR6 is designed to be easily installed in standard 6-inch recessed lighting fixtures through the use of locking clips that are movable to engage the interior sidewalls of the cylindrical can of a standard lighting fixture. The use of universal adapter 30 thus provides a similar structure to typical residential lighting fixtures, enabling the locking clip design of the LR6 to be used with lighting fixture rough-ins 10 that do not have a can.
As noted above, adapter body 32 can further be configured to be positioned within aperture 14 in frame 12. In particular, adapter body 32 can be sized so that the end connected to adapter socket 40 and electrical connector 42 is no larger than aperture 14. That being said, it should be noted that adapter body 32 need not fit perfectly through aperture 14, and it can be desirable for adapter body 32 to be sized to easily pass through aperture 14 with a reasonable amount of clearance. In this way, the use of universal adapter 30 is not limited to a lighting fixture rough-in 10 having a particular size aperture 14.
When properly sized, adapter body 32 can be inserted into aperture 14 to be coupled with frame 12. To ensure that adapter body 32 cannot be inserted completely through aperture 14, adapter body 32 can include a flange 34 extending outwardly that cannot pass through aperture 14. For example, flange 34 can be positioned at or near the open end 33 of adapter body 32. When the lighting fixture rough-in 10 is installed above a ceiling, flange 34 supports adapter body 32 in place with respect to the ceiling, with open end 33 of adapter body 32 lying substantially flush with the surface of the ceiling C. Such an arrangement is desirable because it can make the finished lighting fixture as unobtrusive as possible.
To couple adapter body 32 to frame 12 of lighting fixture rough-in 10 and thereby prevent universal adapter 30 from being easily dislodged from its position within aperture 14, one or more retainers 36 can be provided on adapter body 32 (see
Retainers 36 can be moveable with respect to adapter body 32 to adjust the position of adapter body 32 with respect to frame 12. Stated otherwise, retainers 36 can be releasably engaged with adapter body 32 and capable of sliding along the length of adapter body 32 relative to open end 33 along adapter slots S within adapter body 32. In this way, the distance between flange 34 and gripping portion 38 is adjustable so that universal adapter 30 can be coupled to lighting fixture rough-in 10 regardless of the thickness of ceiling C. The combination of flange 34 and retainers 36 effectively clamp about the combined thickness of frame 12 and ceiling C to hold adapter body 32 in place. For instance, retainers 36 can be adjusted so that adapter body 32 extends only far enough from frame 12 to accommodate a 3/8 inch plyboard ceiling between frame 12 and flange 34. Alternatively, retainers 36 can be adjusted away from flange 34 such that a thicker ceiling can be accommodated, such as a ¾ inch plaster ceiling or even a ceiling as thick as 2 inches or more.
With universal adapter 30 securely mounted within frame 12, a trim portion can be provided just as is generally done in residential lighting fixtures. As noted above, the inclusion of a trim portion can help provide a better fit for lighting element 60, it can reflect at least some of the light directed into the fixture, and it can improve the aesthetic appearance of the lighting fixture. Alternatively, lighting element 60 can include elements serving the purpose of a trim portion. Namely, lighting element 60 can be sized to readily fit into adapter body 32, and visible features can be designed to be visually pleasing. Further still, adapter body 32 itself can be designed to be aesthetically pleasing so that no trim portion is needed.
Adapter socket 40 can be configured to receive lighting element 60, thereby securing lighting element 60 to lighting fixture rough-in 10. In this regard, adapter socket 40 can be of the widely used screw-in (“Edison”) type socket. Alternatively, adapter socket 40 can be a GU-24 type socket, which is designed to work with line voltage sockets used for energy-efficient compact fluorescent bulbs.
Of course, adapter socket 40 not only provides physical support for lighting element 60, but also provides an electrical connection for lighting element 60. In this regard, electrical connector 42 serves to electrically connect adapter socket 40 to electrical junction box 20 of lighting fixture rough-in 10. Specifically, electrical connector 42 can be a screw-in type plug where junction head 22 includes an Edison-type junction socket 24. In this arrangement, instead of a light bulb being directly connected to electrical junction box 20 through junction socket 24, electrical connector 42 is used to bridge the electrical connection from electrical junction box 20 to adapter socket 40.
To account for varying configurations of junction socket 24 and junction head 22 extending from electrical junction box 20, electrical connector 42 can include an electrical conduit 48 connecting adapter socket 40 to electrical connector 42. The inclusion of electrical conduit 48 provides flexibility in connecting and securing universal adapter 30 in place. In addition, the connection of electrical connector 42 to adapter socket 40 can be an angled fitting 50 (e.g., 90° fitting) to place the attachment in the center of the end of adapter body 32. In addition, this kind of fitting 50 provides a low-profile connection to adapter body 32, which can address space issues caused by the size and shape of adapter body 32 being different than finishing section 16 designed for use with lighting fixture rough-in 10.
Because junction head 22 is often designed to be coupled directly with finishing section 16 (see
Enclosure structure 46 can be secured onto electrical connector 42 by a tri-clip/slot mating feature with bendable tabs. With this kind of feature, which is illustrated in
The connection of electrical connector 42 to junction socket 24 can be further shielded by an additional, secondary enclosure structure. For instance, a clamshell-type enclosure structure 57 can be positioned to surround electrical connector 42 and junction head 22. One example of such clamshell enclosure 57 is illustrated in
In another aspect, the disclosed subject matter can include a method for using the above described universal adapter 30 to adapt a lighting fixture rough-in 10 for use with a lighting element 60. Just as disclosed above, lighting fixture rough-in 10 can include a frame 12 defining an aperture 14 therethrough and an electrical junction box 20. Connecting universal adapter 30 to lighting fixture rough-in 10 can involve connecting electrical connector 42 to electrical junction box 20 of lighting fixture rough-in 10. As noted above, and as illustrated in
The now-connected junction head 22 and electrical connector 42 can further be enclosed inside clamshell enclosure 57, as is depicted in
Once the electrical connection is made and the connectors safely enclosed, adapter body 32 can be inserted through aperture 14 in frame 12 of lighting fixture rough-in 10. Flange 34 can brace adapter body 32 against the ceiling or wall above which lighting fixture rough-in 10 is installed. In the other direction, the position of retainers 36 can be adjusted so that they engage frame 12 and support adapter body 32 in place with respect to aperture 14. For instance, as is shown in
Lighting element 60 can be inserted into open end 33 of adapter body 32 and connected to adapter socket 40 to create a completed lighting fixture. As noted above, depending on the configuration of lighting element 60, a trim portion can be provided to help provide a better fit for lighting element 60, reflect at least some of the light directed into adapter body 32, and/or improve the aesthetic appearance of any exposed portions of the lighting fixture.
It will be understood that various details of the presently disclosed subject matter may be changed without departing from the scope of the presently disclosed subject matter. Furthermore, the foregoing description is for the purpose of illustration only, and not for the purpose of limitation.
The presently disclosed subject matter claims the benefit of U.S. Provisional Patent Application Ser. No. 61/127,923, filed May 16, 2008; the disclosure of which is incorporated herein by reference in its entirety.
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Number | Date | Country | |
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