The present invention relates generally to lighting devices and more particularly to a lighting device with an adaptor band having torsion spring receivers.
A significant percentage of electricity that is generated in the United States goes towards lighting applications. Incandescent lamps have been in use for over one hundred years, and still remain in widespread use. These incandescent lamps, although relatively inexpensive and easy to replace, are not very efficient at generating light. As the demand for and the cost of generating electricity has risen over the years, utility companies and other governmental agencies have begun promoting the use of more efficient ways to generate light. Fluorescent light bulbs are more efficient than incandescent light bulbs but are still less efficient that solid state light emitters, such as light emitting diodes (“LEDs”).
However, replacing the entire light fixture with a new light fixture can he expensive, especially when several light fixtures need to be replaced. Instead, it would be more economical to replace just the light module of the preexisting light fixture with a different light module, thereby saving costs. However, some new light modules require torsion spring receivers within the housing of the preexisting fixture, which were not originally provided. In view of the foregoing, and for at least the reasons mentioned above, there is a need in the art to develop ways in which to retrofit existing light housings to receive torsion springs.
According to one exemplary embodiment, the apparatus includes a material strip, a first torsion spring receiver, a second torsion spring receiver, and a coupling means. The material strip includes a front surface and a rear surface. The first torsion spring receiver is positioned at a first location on the material strip, while the second torsion spring receiver is positioned at a second location on the material strip, which is different than the first location. The first and second torsion spring receivers extend inwardly from the front surface. The coupling means couples the material strip to a housing.
According to another exemplary embodiment, the luminaire includes a housing and an adaptor band coupled to an inner surface of the housing. The housing includes the inner surface and an opening at a first end. The adaptor band includes a material strip, a first torsion spring receiver, a second torsion spring receiver, and a coupling means. The material strip includes a front surface and a rear surface. The first torsion spring receiver is positioned at a first location on the material strip, while the second torsion spring receiver is positioned at a second location on the material strip, which is different than the first location. The first and second torsion spring receivers extend inwardly from the front surface. The coupling means couples the material strip to a housing.
According to another exemplary embodiment, a method for installing an adaptor band includes providing an adaptor band, inserting the adaptor band into a luminaire housing, and coupling the adaptor band to an inner surface of the housing. The adaptor band has a first diameter and includes a material strip, a first torsion spring receiver, a second torsion spring receiver, and a coupling means. The material strip includes a front surface and a rear surface. The first torsion spring receiver is positioned at a first location on the material strip, while the second torsion spring receiver is positioned at a second location on the material strip, which is different than the first location. The first and second torsion spring receivers extend inwardly from the front surface. The coupling means couples the material strip to a housing.
The foregoing and other features and aspects of the invention are best understood with reference to the following description of certain exemplary embodiments, when read in conjunction with the accompanying drawings, wherein:
The drawings illustrate only exemplary embodiments of the invention and are therefore not to be considered limiting of its scope, as the invention may admit to other equally effective embodiments.
The present invention is directed to lighting devices that include an adaptor band having torsion spring receivers capable of receiving torsion springs. Although the description of exemplary embodiments is provided below in conjunction with torsion springs coupled to a light module or a reflector trim, the torsion springs arc also capable of being coupled to any other component associated with a lighting device, for example, a lens, without departing from the scope and spirit of the exemplary embodiment. Additionally, although the description of exemplary embodiment is provided below in conjunction with an adaptor band that is able to be coupled to a housing's inner surface having a nominal diameter ranging from about 6 ⅛ inch to about 6 ⅞ inch, the adaptor band can be re-dimensioned to fit a housing's inner surface having different nominal diameters without departing from the scope and spirit of the exemplary embodiment of the invention.
The invention is better understood by reading the following description of non-limiting, exemplary embodiments with reference to the attached drawings, wherein like parts of each of the figures are identified by like reference characters, and which are briefly described as follows.
In one exemplary embodiment, the material strip 110 is a strip of 301 stainless steel metal that is half-hardened and includes a front surface 112 and a rear surface 114. In this example, the material strip has a thickness 102 of about one millimeter, a width 104 of about 1 ¼ inch at the widest point, and a full arc length 106 of about seventeen inches. The exemplary dimensions provided above allow the adaptor band 100 to be coupled to a housing having a nominal inside diameter 205 (
In one exemplary embodiment, the material strip 110 is flexible, substantially C-shaped, and has a first diameter 190 determinable while the material strip 110 is in a steady-state condition (uncompressed and unexpanded). The material strip 110 is compressible to a range of diameters, including a second diameter 192, as shown in
The first torsion spring receiver 120 is positioned on the material strip 110 at a first location 122 and extends inwardly from the front surface 112. In one exemplary embodiment, the first torsion spring receiver 120 is integrally fabricated with the material strip 110. Alternatively, the receiver 120 is separately formed and attached to the material strip 110 using known attachment means including, but not limited to, welding, adhesives, and rivets. When integrally forming the first torsion spring receiver 120, a portion of the material strip 110 is cut, folded over, and formed into the first torsion spring receiver 120. When separately forming the first torsion spring receiver 120, the first torsion spring receiver 120 or portions of the first torsion spring receiver 120 are initially formed and thereafter coupled to the material strip 110 using the attachment means.
The first location 122 is positioned at the centerpoint of the first torsion spring receiver 120 when positioned on the material strip 110. In this exemplary embodiment, the first location 122 is positioned at an arc length of about 5.1 inches from the midpoint between the first location 122 and the second location 152 along the arc length of the material strip 106. The ends of the first torsion spring receiver 120 are substantially U-shaped and face one another. Alternatively, the first torsion spring receiver 120 has other end shapes capable of receiving and securing torsion springs including, but not limited to, L-shaped ends. Additionally, although the first location 122 is positioned at an arc length of about 5.1 inches from the midpoint between the first location 122 and the second location 152, in alternative embodiments, the first location 122 is positioned at an arc length that is greater or less than 5.1 inches from the midpoint between the first location 122 and the second location 152 along the arc length of the material strip 106, depending upon the size of the housing's nominal inside diameter 205 (
Similarly, the second torsion spring receiver 150 is positioned on the material strip 110 at a second location 152 and extends inwardly from the front surface 112 so that it substantially extends toward the first torsion spring receiver 120. In one exemplary embodiment, the second torsion spring receiver 150 is integrally fabricated with the material strip 110. Alternatively, the receiver 150 is separately formed and subsequently attached to the material strip 110 using known attachment means including, but not limited to, welding, adhesives, and rivets. In one exemplary method, when integrally forming the second torsion spring receiver 150, a portion of the material strip 110 is cut, folded over, and formed into the second torsion spring receiver 150. When separately forming the second torsion spring receiver 150, the second torsion spring receiver 150 or portions of the second torsion spring receiver 150 are initially formed and thereafter coupled to the material strip 110 using known attachment means.
The second location 152 is positioned at the centerpoint of the second torsion spring receiver 150 when positioned on the material strip 110. In this exemplary embodiment, the second location 152 is positioned at an arc length of about 5.1 inches from the midpoint between the first location 122 and the second location 152 along the arc length of the material strip 106. The ends of the second torsion spring receiver 150 are substantially U-shaped and face one another. Alternatively, the second torsion spring receiver 150 has other end shapes capable of receiving and securing torsion springs including, but not limited to, L-shaped ends. Additionally, although the second location 152 is positioned at an arc length of about 5.1 inches from the midpoint between the first location 122 and the second location 152, in alternative embodiments, the second location 152 is positioned at an arc length that is greater or less than 5.1 inches from the midpoint between the first location 122 and the second location 152 along the arc length of the material strip 106, depending upon the size of the housing's nominal inside diameter 205 (
The coupling means 180 couples the material strip 110 to the housing's inner surface 220 (
The dome-shaped top 212 includes a passageway 214 extending from the interior of the housing 210 to the exterior of the housing 210. The passageway 214 is sized to allow electrical wires (not shown) to proceed through the passageway 214 and supply a light module 400 (
The cylindrical wall 216 has a cylindrical or substantially cylindrical cross-section and includes the internal surface 220 and an external surface 222. The internal surface 220 and the external surface 222 are both substantially circular. However, in certain alternative exemplary embodiments, the internal surface 220 and the external surface 222 can be any other geometric or non-geometric shape. One end of the wall 216 is coupled to the dome-shaped top 212, while the opposing end defines an opening 230, which provides an illumination pathway for a light source (not shown). The opening 230 also is substantially circular. However, in certain alternative embodiments, the opening 230 has a non-circular shape that corresponds to the shape of the external surface 222.
The adaptor band 100 is positioned adjacent the opening 230 and compressed so that the diameter of the adaptor band 100 becomes a second diameter 192, which is less than the housing's nominal inside diameter 205. The adaptor band 100 is inserted through the opening 230 so that it is surrounded by the internal surface 220. The adaptor band 100 is released and it expands, thereby changing the diameter of the adaptor band 100 from the second diameter 192 to a third diameter 290. Since the adaptor band 100 is positioned and constrained within the internal surface 220, the third diameter 290 is substantially similar to the nominal inside diameter 205. The adaptor band 100 is adjusted within the internal surface 220 so that the first torsion spring receiver 120 and the second torsion spring receiver 150 are substantially within the same plane and are, for example, about 170-190 degrees apart from one another. Additionally, the adaptor band 100 is oriented so that the first torsion spring receiver 120 and the second torsion spring receiver 150 are about 1 ¼ inches from the opposing end of the housing 210, which defines the opening 230. In alternative exemplary embodiments, the first torsion spring receiver 120 and the second torsion spring receiver 150 range from about ½-4 inches from the opposing end of the housing 210. In certain exemplary embodiments, a longitudinal edge of the adaptor band 100 is aligned with and positioned adjacent to the opposing end of the housing 210 that defines the opening 230.
Once the adaptor band 100 is properly oriented within the housing 210, the adaptor band 100 applies an outward force against the internal surface 220, thereby creating a friction fit between the adaptor band 100 and the internal surface 220. Thus, the adaptor hand 100 is stable and unmovable within the housing 210 without application of additional force on the adaptor band 100. Accordingly, the adaptor band 100 is capable of being fastened to the housing's internal surface 220 with fasteners without having to use a hand or other device to hold the adaptor band 100 in place. One or more fasteners including, but not limited to, metal piercing screws, other types of screws, nails, or rivets are used to securely couple the adaptor band 100 to the internal surface 220. As previously mentioned, an adhesive including, but not limited to, a glue, cement, or Velcro* can be placed on the adaptor band's rear side 114 to facilitate coupling between the rear side 114 and the internal surface 220.
The adaptor band 100 is in a first compression state 310 when inserted and properly oriented within the housing 210 having a nominal inside diameter 205 of about 6 ⅛ inches. When in the first compression state 310, a first compression angle 316 is formed between the centerpoint 312 of the first torsion spring receiver 120 and the centerpoint 314 of the second torsion spring receiver 150. The first compression angle 316 is about 170 degrees. The adaptor band 100 is in a second compression state 320 when inserted and properly oriented within the housing 210 having a nominal diameter 205 of about 6 ½ inches. When in the second compression state 320, a second compression angle 326 is formed between the centerpoint 322 of the first torsion spring receiver 120 and the centerpoint 324 of the second torsion spring receiver 150. The second compression angle 326 is about 180 degrees. The adaptor band 100 is in a third compression state 330 when inserted and properly oriented within the housing 210 having a nominal diameter 205 of about 6 ⅞ inches. When in the third compression state 330, a third compression angle 336 is formed between the centerpoint 332 of the first torsion spring receiver 120 and the centerpoint 334 of the second torsion spring receiver 150. The third compression angle 336 is about 190 degrees. This adaptor band 100 is designed to receive torsion springs that are coupled to a device, wherein the torsion springs are at an angle ranging from about 170 degrees to about 190 degrees between one another. However, the angle between the centerpoint of the first torsion spring receiver 120 and the centerpoint of the second torsion spring receiver 150 can vary from the description provided above depending upon the angle formed between the torsion springs on the device that the torsion springs are coupled to.
According to the exemplary embodiment, the heat sink 410 has a substantially circular profile with one or more fins 412 extending outwardly from a central area of the heat sink 410. The fins 412 can be evenly spaced about the outer perimeter of the heat sink 410. In alternative exemplary embodiments, the profile of the heat sink 410 can vary without departing from the scope and spirit of the exemplary embodiment of the invention. The heat sink 410 manages heat output from the light source. The heat sink 410 is fabricated form any material capable of conducting and/or convecting heat, such as die cast metal.
The reflector 420 also has a substantially circular profile and is coupled to the heat sink 410 at one end using one or more fasteners (not shown), such as screws, clips, nails, pins, and rivets. The reflector 420 is fabricated from a material capable of reflecting, refracting, transmitting, or diffusing light that is emitted from the light source.
Torsion springs 440 are coupled to the side surfaces of the reflector 420 using a mounting bracket 425. Typically, two torsion springs 440 are mounted about 180 degrees form one another, however, a different number of torsion springs 440 can be mounted and at different angles from one another. Accordingly, in these alternative embodiments, the adaptor band 110 (
Each torsion spring 440 includes opposing bracket ends 440a that are inserted inside corresponding torsion spring receivers 120 and 150 (
Although each exemplary embodiment has been described in detail, it is to he construed that any features and modifications that are applicable to one embodiment are also applicable to the other embodiments. Furthermore, although the invention has been described with reference to specific embodiments, these descriptions are not meant to be construed in a limiting sense. Various modifications of the disclosed embodiments, as well as alternative embodiments of the invention will become apparent to persons of ordinary skill in the art upon reference to the description of the exemplary embodiments. It should be appreciated by those of ordinary skill in the art that the conception and the specific embodiments disclosed may be readily utilized as a basis for modifying or designing other structures or methods for carrying out the same purposes or the invention. It should also be realized by those of ordinary skill in the art that such equivalent constructions do not depart from the spirit and scope of the invention as set forth in the appended claims. It is therefore, contemplated that the claims will cover any such modifications or embodiments that fall within the scope of the invention.
Number | Date | Country | |
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Parent | 12633645 | Dec 2009 | US |
Child | 14010065 | US |