This application is a non-provisional application of U.S. Provisional Application No. 61/937,772 filed Feb. 10, 2014, the disclosure of which is hereby incorporated herein by reference in its entirety.
Broadly, the present invention relates the ground lighting. More particularly, the present invention relates to lighting elements for illuminating and or providing markers within hardscape structures such as patios, driveways, roadbeds and walkways.
Masonry and other hard structures used as a part of a landscape design are known as the “hardscape”. The hardscape incorporates structures such as pathways, sidewalks, steps, driveways, retaining walls and the like into an aesthetic installation generally, although not exclusively, in an outdoor setting which combines plant, masonry, and lighting elements to enhance the visual environment of a residence, commercial facility or school campus to cite but a few examples.
The hardscape may be formed, inter alia, of concrete, natural stone, bricks or blocks manufactured from concrete or other hard materials which are available in various colors, shapes and textures that simulate natural or quarried stone. Such products, for example, those provided by companies such as EP Henry of Woodbury, N.J., constitute structural systems which allow for the construction of structures such as patios, driveways, roadbeds and walkways using discrete masonry elements that may be positioned adjacent one another to form a surface without the use of mortar. The structure is, nevertheless, a substantially permanent structure due to the weight, regular shape, friction and quasi-interlocking nature of the discrete elements.
As lighting is often an important component of the landscape design, it is desirable to incorporate lighting elements, such as lamps or markers, into the design. Present practice features stand-alone lamps that mount adjacent to the hardscaping and which may also require an electrical box adjacent the hardscaping, often requiring significant modification of one or more of the discrete elements around the lamp. It would be advantageous to provide lamps that form an integral part of the hardscape and which require minimum modification of the hardscaping.
Broadly, the present invention provides a lighting element for an illuminated hardscape. The lighting element includes a body structure defining a dispersion surface from which the light is dispersed to the environment outside the lighting element and which comprises a material through which light can pass, such as a clear or translucent material. A light fixture is positioned within the body and is configured to provide the light which passes through the material of the body to the dispersion surface.
Another embodiment of the invention is directed to a hardscape structure that incorporates the lighting element between elements of the horizontal hardscape structure. In one form, the body structure of the lighting element has a configuration which facilitates positioning of hardscape filling material thereabout and between adjacent hardscape elements. For example, the lighting element body structure can have an I-beam like cross-section. A method of illuminating a hardscape is also provided.
In another embodiment of the invention, a cover can be provided for the dispersion surface of the light element. The cover can be used to change the color of the light emitted from the lighting element, add indicia or symbols which can be lit up, and even change the texture of the dispersion surface.
The accompanying drawings, which are incorporated herein and constitute part of this specification, illustrate the presently preferred embodiments of the invention, and, together with the general description given above and the detailed description given below, serve to explain the features of the invention. In the drawings:
In the drawings, like numerals indicate like elements throughout. Certain terminology is used herein for convenience only and is not to be taken as a limitation on the present invention. The following describes preferred embodiments of the present invention. However, it should be understood, based on this disclosure, that the invention is not limited by the preferred embodiments described herein.
Referring to
If the lighting element 10 is intended to throw light, the body structure 12 may be made out of a clear material such as a clear polycarbonate material. In the preferred embodiment, it is desirable to provide a glowing lighting element 10 that can be used as a marker or delineator. To this end, it is believed that a clear, completely translucent material would throw light rather than disperse light. To help disperse the light, if desired to make the product more of a lit marker or delineator, a pigment may be mixed with the material. For the pigmented version, it has been found that a material made up of approximately 98% clear polycarbonate and 2% white polycarbonate mixed thoroughly prior to the molding provided the preferred amount of light dispersion or glow. The invention is not limited to the given ratio, and other ratios may be utilized to provide a desired lighting effect. Further, while a white pigment is preferred, other colors may be used such that light of any desired color may be dispersed.
The body structure 12 is shaped preferably to cooperate with the hardscaping and be held in place thereby. For example, a body 12 with changes in width along the sides 12a of the body 12 will cooperate with sand and other fill materials to hold the light element 10 in place with the hardscape blocks 102 as further described below. Such changes in width can include indentations and structures that extend from the sides of the body into the fill material, or other types of changes in the cross sectional width of the body 12 along the sides 12a which can cooperate with the fill material to help hold the light element 10 in place. In the illustrated embodiment, such changes in width are provided by the longitudinally extending light element body 12 having an I-beam or rail like cross-section with a center section 20 extending between a wider top flange section 22 and a wider bottom flange section 24. As illustrated in
Referring to
The top flange section 22 of the illustrated body structure 12 has a dispersion surface 28 which disperses light coming from the light fixture 16. The dispersion surface 28 is preferably a convex surface, slightly convex as shown, with the curvature aiding in light distribution as well as naturally shedding dirt and water to maintain a clean light emitting surface. Other configurations may be used. The dispersion surface 28 may be formed preferably as a roughened surface such that the texture and appearance are similar to that of the hardscape blocks 102. The height from the bottom of the bottom section 24 to the dispersion surface 28 is preferably approximately equal to the height of the hardscape blocks 102. The lighting element 10 is preferably positioned relative to the hardscape blocks 102 such that the dispersion surface 28 is substantially even with the top surface of the hardscape blocks 102.
As illustrated in
Referring to
The internal channel 14 extends into the bottom flange section 24 a distance preferably greater than 50% the length of the body section, but less than 100% of the total length. More preferably, the internal channel 14 extends approximately 75% of the length of the body 12 beginning at the channel opening 38 and terminating at a channel closed end 40. It is apparent that the bottom section 24 has a height sufficient to include the internal channel 14 within. With such a configuration, with the lighting fixture 16 positioned within the channel 14, the light source 30 is preferably centered lengthwise along the body structure 12 to provide a uniform lighting effect at the dispersion surface 28. Where multiple LEDs or other light sources are used, they are preferably separated from one another and positioned within the body 12 to provide a uniform or otherwise desired lighting effect.
During assembly, after the light fixture 16 is placed into the channel 14, the channel 14 is filled preferably with a clear or translucent potting material 42, such as a two part silicone or epoxy potting material, that preferably remains soft or gel like. The potting material 42 seals and protects the electrical components from the environment and fixes the light fixture 16 in place within. The plug 18 is configured to close and seal the open end 18 of the channel 14. As illustrated in
To facilitate passage of the lighting fixture wire 34 into the channel 14, a tapered relief channel 44 is formed along the lower section of the open end 38 of the internal channel 14. As illustrated in
In a preferred method of manufacture, the body structure 12 is molded as a unitary integral member with the internal channel 14 and relief channel 44 formed therein. In this regard, one or more removable cores on molding tool inserts (not shown) defining the configuration of the channels 14 and 44 are positioned within the mold and the body structure 12 is then molded about the cores. The channel 14 may taper outwardly from the closed end 40 to the open end 38 to facilitate removal of the molding cores. Additionally, if any supports are utilized to support the cores during the molding process, they may leave holes in the body structure 12, however, such holes may be plugged with corresponding plug members 48 as illustrated in
In the illustrated embodiment, the internal channel 14 is configured to position the light fixture 16 in a preferred centered position longitudinally parallel with the top and bottom sections 22, 24, and in a flat orientation, which position is fixed in place by the potting material 42. This preferred configuration is now described in more detail
As best seen if
Other configuration for the channel 14 may be used to position and orient the light fixture 16 within. For example, making the height of the channel 14 substantially smaller than the width of the light fixture 14 would prevent the fixture 14 from becoming angled within.
Having described a lighting element 10 in accordance with an exemplary embodiment of the invention, an illustrative illuminated hardscape 100 incorporating the lighting elements 10 will be described with respect to
A plurality of lighting elements 10 are integrally mounted within the hardscape 100 by positioning the body structure 12, and if desired the shims 60, 62, between adjacent blocks 102. In the illustrated embodiment, the blocks 102 adjacent the lighting element 10 abut or are next to the bottom section 24 of the lighting element 10 so that the width W1 of the bottom section 24 sets the width between the blocks adjacent the lighting element 10. When used with blocks 102, preferably, the lighting element 10 should be substantially the same length as the length of the side of the block 102 adjacent to the light element 10. The wiring 34 extends from each lighting element 10 and is connected to a main wiring 108 which in turn is connected to a power source (not shown). The wiring 34 and 108 preferably runs beneath or between the hardscaping elements or in the ground adjacent the hardscaping to the power source as shown and as known in the art to remain out of sight and protected from the environment. Once the blocks 102 and lighting elements 10 are positioned, fill material 104 is positioned between adjacent blocks 102 and also between the lighting elements 10 and the blocks 102 adjacent thereto. A shaker or the like may be utilized to assist in placing the filling material as is known in the art. As explained above, the fill material 104 fills around the body structure 12 and secures the lighting element 10 within the hardscape 100. No special tools are required, and the components of the lamp are readily accessible for repair or replacement, providing significant ease of maintenance. Once fully installed and the wiring 34 is connected to a suitable power source, preferably with a power switch that may or may not be controlled by a timer, the power can be turned on to illuminate the lighting element 10 and create the desired lighting effect to the hardscape.
Although lighting elements are shown oriented horizontally in the hardscape 100, it is understood that a vertical orientation is also feasible by positioning the lighting elements 10 within the vertical seam between two adjacent blocks in a wall structure or the like. As illustrated, the top of the light element 10, here the dispersion surface 28, is approximately aligned with or slightly above the top surface of the hardscape blocks 102 to provide a minimum light element profile while providing the desired lighting effect. In one preferred configuration for use with blocks 102 having approximately an 8 inch length, the light element 10 can be dimensioned approximately as follows: length—8 inches, width W1 of bottom section—¾ inch, width W2 of top section—½ inch, width of central section—¼ inch. Other preferred configurations for a longitudinally extending light element 10 similar to that shown in
A key benefit of the invention is that regardless of the shape or configuration, the lighting element 10 can be made as a unitary block having the desired shape and size, and of material suitable for the outdoor environment and which can transmit light from the light fixture within to at least one surface of the device for providing the desired lighting effect. Moreover, positioning the lighting fixture 16 within an internal channel 14, sealed within the body 12 from the environment outside, allows the light fixture and its electronic components to be completely protected from the environment while the light created thereby is readily transmitted through the material to the desired outer surface for the desired lighting effect.
Another embodiment of the present invention is now described with reference to
With initial reference to
Any suitable means to attach the cover 80 to the upper section 22 of the light element 10 can be used. This includes mechanical means, adhesives, etc. One preferred means as illustrated is to shape the cover to cooperate with the section of the light element 10 to which it will attach, such as a dove-tail type arrangement. For example, here the cover 80 has arms 86 extending downward from the cover top section 82 and which arms are configured to compliment and wrap around the upper flange section 22, allowing the cover to slide onto the light element 10 prior to installation with the hardscaping 100. The dimensions of the cover can be made so that the cover 80 friction fits over the top section 22, thereby securely affixing the cover to the light element 10. It is appreciated that the light element may need to be positioned a little lower in the ground to compensate for the thickness of the cover 80. Another possible attachment means is to configure the cover 80 to snap onto the light element 10.
The cover 80 can be configured to provide the desired lighting effect. In
Light elements 10 according to the invention provide a simple and elegant illumination for hardscape design that is easy to install and maintain. Such light elements are readily removable and repositionable and facilitate repair or reconfiguration of the hardscape as required. They may be used with any form of hardscape, for example, concrete products such as blocks or bricks, natural stone, mortared or stacked structures, and poured concrete structures to cite but a few exemplary applications.
These and other advantages of the present invention will be apparent to those skilled in the art from the foregoing specification. Accordingly, it will be recognized by those skilled in the art that changes or modifications may be made to the above-described embodiments without departing from the broad inventive concepts of the invention. It should therefore be understood that this invention is not limited to the particular embodiments described herein, but is intended to include all changes and modifications that are within the scope and spirit of the invention as defined in the claims.
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Number | Date | Country | |
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20150300608 A1 | Oct 2015 | US |
Number | Date | Country | |
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61937772 | Feb 2014 | US |