Not applicable to this application.
Not applicable to this application.
1. Field of the Invention
The present invention relates generally to a flexible LED light strip and more specifically it relates to an extended length flexible LED light strip system for extending the length of a flexible LED light strip.
2. Description of the Related Art Any discussion of the related art throughout the specification should in no way be considered as an admission that such related art is widely known or forms part of common general knowledge in the field.
Light strips, such as flexible LED light strips, have become increasingly popular in various applications such as but not limited to under cabinet lighting, TV back lighting, staircase lighting, architectural lighting, bar lighting, kitchen lighting, toe kick lighting, ceiling cove lighting, decorations and vehicles. A flexible LED light strip is comprised of an elongated flexible strip of printed circuit board (PCB) having two or more electrically conductive traces to provide electrical power, a plurality of light-emitting diodes (LED) attached along the front surface of the flexible strip and electrically connected to the conductive traces, and a length of adhesive along the back surface of the flexible strip. The LEDs may emit the same light or may change colors to provide a range of light options. Most conventional flexible LED light strips utilize a low-voltage 12V DC electrical power. During installation of flexible LED light strips, at least one end of the flexible LED light strip is physically and electrically connected to a connector (e.g. DC power coupler, splice connector, etc.). The end of the flexible LED light strip may be attached by soldering the LED light strip to the connector.
One problem with convention flexible LED light strips is that the traces are limited in width and thickness thereby resulting in significant voltage drop along the traces. The voltage drop along the traces limits the total usable length of the flexible LED light strips to approximately 35 feet in length thereby requiring additional power sources to be added for additional flexible LED lights strips where lighting requirements exceed 35 feet. In addition, installing conventional flexible LED light strips is time consuming because of the required soldering of the ends of the flexible LED light strips to a DC power source. Because of the inherent problems with the related art, there is a need for a new and improved extended length flexible LED light strip system for extending the length of a flexible LED light strip.
The invention generally relates to a flexible LED light strip which includes a protective covering having a passage, a light strip extending within the passage of the protective covering, a first power bus and a second power bus within the protective covering, and a plurality of connectors electrically connecting the light strip to the power buses at selected lengths. A power coupler is provided that includes a pair of prongs that extend into the protective covering and electrically contact the power buses to provide DC power to the power buses.
There has thus been outlined, rather broadly, some of the features of the invention in order that the detailed description thereof may be better understood, and in order that the present contribution to the art may be better appreciated. There are additional features of the invention that will be described hereinafter and that will form the subject matter of the claims appended hereto. In this respect, before explaining at least one embodiment of the invention in detail, it is to be understood that the invention is not limited in its application to the details of construction or to the arrangements of the components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced and carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein are for the purpose of the description and should not be regarded as limiting.
Various other objects, features and attendant advantages of the present invention will become fully appreciated as the same becomes better understood when considered in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the several views, and wherein:
a is a cross sectional view taken along line 8-8 of
b is a cross sectional view showing the protective covering comprised of a material encasing the light strip without a passage.
a is an exploded top view of an alternative power coupler having two sets of prongs for connecting adjacent light strips.
b is a top view of the alternative power coupler.
Turning now descriptively to the drawings, in which similar reference characters denote similar elements throughout the several views,
b illustrate an exemplary light strip 30 that is positioned within the protective covering 20. The light strip 30 emits light preferably from only one side of the light strip 30, but may emit light in multiple directions. The light strip 30 includes a plurality of light units 32 that emit light when electrical power is distributed to the light strip 30. The light units 32 may be equidistantly spaced apart or spaced apart at different intervals. The light strip 30 is electrically powered preferably by DC voltage. The DC voltage required to illuminate the light units 32 on the light strip 30 may range from 5V DC to 48V DC (e.g. 12V DC, 24V DC).
As further shown in
The traces within the elongated base 31 extend along an entire length of the light strip 30. The traces are electrically connected to the light units 32 to provide electrical power to the light units 32. For example, for a single color light strip 30, only a first trace and a second trace are required to provide the electrical power needed to illuminate the light units 32. If multiple colors are to be emitted by the light strip 30, then a third trace and a fourth trace are included within the elongated base 31 of the light strip 30 to provide selective electrical power to the traces to create the desired color.
One or both of the ends of the light strip 30 may include electrical connectors for electrically connecting to an external device (e.g. power unit). In addition, the light strip 30 includes a plurality of first contacts 34 and a plurality of second contacts 36 that are electrically connected to the first trace and the second trace respectively along the length of the light strip 30 (e.g. every 6 inches). The first contacts 34 and the second contacts 36 are attached to a first surface of the elongated base 31 as best illustrated in
The protective covering 20 is transparent or semi-transparent to allow the light from the light units 32 to pass through the protective covering 20 and to illuminate a surrounding area. The protective covering 20 may have various cross sectional shapes such as but not limited to rectangular, square, triangular, circular, oval, polygonal and the like.
The protective covering 20 is preferably waterproof to prevent water from making contact with the light strip 30. The protective covering 20 may be comprised of a tubular structure having a passage 24 such as a sleeve constructed of silicone, polyurethane or plastic tubular structure as shown in
The preferred embodiment of the protective covering 20 has a rectangular cross section having a base portion 26, a first sidewall 27 extending from a first side of the base portion 26, a second sidewall 28 extending from the second side of the base portion 26 and an outer portion 29 extending between the distal ends of the sidewalls 27, 28 to form the passage 24 as illustrated in
A plurality of power buses 40, 42, 44, 46 (e.g. wires) extend within the protective covering 20 and preferably are encapsulated within the protective covering 20 spaced from the light strip 30. The power buses 40, 42, 44, 46 are comprised of electrically conductive material (e.g. metal) that is capable of transmitting significantly more electrical power than the traces of the light strip 30 are capable of transmitting thereby extending the usable length of the light strip 30, particularly when the light strip 30 is comprised of a flexible LED light strip 30. The power buses 40, 42, 44, 46 may be positioned within the passage 24 if surrounded by insulation, however, it is preferable that the power buses 40, 42, 44, 46 are not positioned within or in contact with the passage 24 of the protective covering 20.
As illustrated in
The first trace of the light strip 30 is electrically connected to the first power bus 40 at a plurality of spaced apart locations and the second trace of the light strip 30 is electrically connected to the second power bus 42 at a plurality of spaced apart locations. It is preferable that the connection locations between the first bus and the second bus with respect to the first trace and the second trace are in the approximate same distance along the length of the light strip 30.
In particular, a plurality of first connectors 50 electrically connect the first power bus 40 to a corresponding plurality of first contacts 34 electrically connected to the first trace, and a plurality of second connectors 52 electrically connect the second power bus 42 to a corresponding plurality of second contacts 36 electrically connected to the second trace. The first connectors 50 and the second connectors 52 are electrically conductive such as wires. The plurality of first connectors 50 and the plurality of second connectors 52 are preferably equidistantly spaced apart at a distance to ensure a relatively consistent voltage is applied to all of the light units 32 within the light strip 30 (e.g. every 6 inches along the length of the light strip 30).
As illustrated in
The power coupler 60 includes a first prong 62 and a second prong 64 that extend outwardly from the housing 61 of the power coupler 60. The first prong 62 and the second prong 64 are preferably parallel with respect to one another and extend outwardly at least 0.2 inches from the housing 61. The first prong 62 and the second prong 64 are comprised of electrically conductive material (e.g. metal) that are electrically connected to the power receptacle 66 within the housing 61. The power receptacle 66 receives a main power connector 14 from a power cable 12, wherein the power cable 12 is electrically connected to a DC power source (e.g. batteries, AC/DC converter). It is preferable that the DC power source provides 12V DC electric power, however, the DC voltage provided may be greater or less than 12V DC.
The power coupler 60 is attached to an end of the protective covering 20 to electrically communicate with the power buses 40, 42, 44, 46 and to seal the end of the protective covering 20. Sealant or adhesive may be utilized to connect the power coupler 60 in a sealed manner with respect to the protective covering 20 to prevent the entry of water into the passage 24 or otherwise making contact with the light strip 30.
The first prong 62 and the second prong 64 extend into the protective covering 20 to directly and electrically connect to the first power bus 40 and the second power bus 42 respectively as best illustrated in
The power coupler 60 preferably includes an extended tubular portion 69 that extends outwardly from the housing 61 and surrounds the prongs 62, 64, 67, 68. The extended tubular portion 69 receives and surrounds the end of the protective covering 20 to assist in maintaining a physical connection between the power coupler 60 and the protective covering 20. The extended tubular portion 69 also prevents water from entering into the passage 24 of the protective covering 20 or otherwise making contact with the light strip 30. Sealant or adhesive are preferably applied between the extended tubular portion 69 and the protective covering 20 to seal and secure the same.
a and 9b illustrate an alternative power coupler 60 having two sets of a first prong 62 and a second prong 64 extending from the housing 61 to provide electrical power to two different lighting strips. It can be appreciated that a third set of prongs may also be attached to the power coupler 60.
In use, the user is provided with a length of the lighting strip comprised of the light strip 30 within the protective covering 20 such as in a spool or roll as illustrated in
Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Although methods and materials similar to or equivalent to those described herein can be used in the practice or testing of the present invention, suitable methods and materials are described above. All publications, patent applications, patents, and other references mentioned herein are incorporated by reference in their entirety to the extent allowed by applicable law and regulations. The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is therefore desired that the present embodiment be considered in all respects as illustrative and not restrictive. Any headings utilized within the description are for convenience only and have no legal or limiting effect.
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Entry |
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www.xtremeledsonline.com/store/pages.php?pageid=94; Webpage from Xtreme LEDs Online.Com; Received and Printed on Apr. 29, 2013. |
www.ledworldlighting.com/ledborder.html; Webpage from LED World Lighting; Received and Printed on Apr. 29, 2013. |
www.americanlighting.com/products.cfm?ID=139; Webpage from American Lighting Products; Received and Printed on Apr. 29, 2013. |
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Number | Date | Country | |
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20140334142 A1 | Nov 2014 | US |