Patent Application
20090109676
This disclosure relates generally to lighting sources. More particularly, the disclosure relates to a Light-Emitting Diode (“LED”) light.
Historically, incandescent lights with filament-type bulbs have been a popular light source. Incandescent light bulbs illuminate radially outward and the illumination is distributed approximately uniformly in all directions. Fluorescent lights with fluorescent circular tubes have been an alternative to incandescent lights because of their energy-efficient qualities.
LED bulbs are light sources that use semiconductor materials rather than filaments or gasses to emit light. LED bulbs are generally more efficient light sources than incandescent, light bulbs because LED bulbs are nearly monochromatic and emit light within a very narrow range of wavelengths. LED bulbs also generally last many times longer than incandescent light bulbs or fluorescent light sources.
According to one aspect, a Light-Emitting Diode (“LED”) light comprising a ring-shaped homing having a cross section, a transparent section and a non-transparent section and wherein the ring-shaped housing defining a horizontal plane relative to a midpoint of the cross section; and a board fitted within the ring-shaped housing at an angle between about ten to sixty degrees relative to the horizontal plane and having a plurality of LEDs mounted thereon to emit, light through the transparent section.
According to another aspect, a Light-Emitting Diode (“LED”) light comprising a ring-shaped housing having a cross section, a transparent section and a non-transparent section and wherein the ring-shaped housing defining a horizontal plane relative to a midpoint of the cross section; a support comprising at least one strut coupled to the non-transparent section; and a printed circuit board fitted within the ring-shaped housing at an angle between about ten to sixty degrees relative to the horizontal plane and having a plurality of LEDs mounted thereon to emit, light through the transparent section.
According to another aspect, a Light-Emitting Diode (“LED”) light comprising a ring-shaped housing having a cross section, a transparent section and a non-transparent section and wherein the ring-shaped housing defining a horizontal plane relative to a midpoint of the cross section; a support comprising at least two struts coupled to the non-transparent section; and a printed circuit hoard fitted within the ring-shaped housing at an angle between about twenty to twenty-five degrees relative to the horizontal plane and having a plurality of LEDs mounted thereon, wherein the plurality of LEDs are mounted approximately perpendicularly onto the printed circuit board.
It is understood that other embodiments will become readily apparent to those skilled in the art from the following detailed description, wherein it is shown and described various embodiments by way of illustration. The drawings and detailed description are to be regarded as illustrative in nature and not as restrictive.
The detailed description set forth below in connection with the appended drawings is intended as a description of various embodiments of the present invention and is not intended to represent the only embodiments in which the present invention may be practiced. Each embodiment described in this disclosure is provided merely as an example or illustration of the present invention, and should not necessarily be construed as preferred or advantageous over other embodiments. The detailed description includes specific details for the purpose of providing a thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced without these specific details. In some instances, well-known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the present invention. Acronyms and other descriptive terminology may be used merely for convenience and clarity and are not intended to limit the scope of the invention.
In one aspect, a Printed Circuit Board (“PCB”) 106 is fitted within the ring-shaped housing 101 at an angle 107. The angle 107 is denoted as φ in
In one aspect, a board is fitted within the ring-shaped housing 101 at an angle 107, and the LEDs 108 are mounted approximately perpendicularly onto the board. The board provides physical support and orientation for the LEDs 108. The board may be sectioned into two or more board pieces to fit into the ring-shaped housing 101. Here, a PCB 106 is electrically coupled to the LEDs 108 to provide electrical connectivity to the LEDs 108. In one aspect, a PCB 106 may be located within the ring-shaped housing 101, for example, along side the board. In another aspect, a PCB 106 may be located external to the ring-shaped housing 101. For example, the PCB 106 may be located within the support 115. One skilled in the art would understand that the placement of the PCB 106 is a design choice and may depend on the particular application.
In one aspect, electrical wires 109 provide electrical connectivity between an external power supply (not shown) and the PCB 106. In one aspect, the electrical wires 109 are fed through the struts 110 and coupled to the PCB 106 which is fitted within the ring-shaped housing 101. One of ordinary skill would understand that the electrical and physical arrangement of the PCB 106 is a design choice that depends on a particular application.
In one aspect, the angle 107 is between ten and sixty degrees relative to a horizontal plane 111 through the midpoint 112 of the ring-shaped housing 101. As illustrated in
In one aspect, the angle 107 at which the PCB 106 is fitted is chosen to reduce light pollution above an imaginary horizontal line of sight. Accordingly, the LEDs 108 are mounted approximately perpendicularly to the plane of the PCB 106 and emit light directed toward the ground to provide maximum desired ground illumination and to reduce light pollution above an imaginary horizontal line of sight. In one aspect the non-transparent section 104 is chosen to reduce light pollution above the imaginary horizontal line of sight. The non-transparent section 104 blocks light emitted from the LEDs 108.
In one aspect, the LEDs 108 are mounted on the PCB 106 in a column 113 and row 114 grid pattern.
An example of an application for the loop LED light 100 is to illuminate a street or sidewalk by mounting the loop LED light 100 on a street post as shown in
In one aspect, the transparent section 103 of the ring-shaped housing 101 is aligned with the angle 107. Accordingly, light emitted from the LEDs 108 passes through the transparent section 103 of the ring-shaped housing 101, and minimal illumination are directed towards the non-transparent section 104.
In one aspect, the loop LED light 100 includes at least one strut 110.
In one aspect, the struts 110 are coupled to a support 115 located approximately at the center of the ring-shaped housing 101. In one aspect, at least one strut 110 is fixed to the non-transparent section 104 of the ring-shaped housing 101. In one aspect, the electrical wires 109 are fed from the support 115 which houses a power supply (not shown) and then through the struts 110 to where the electrical wires 109 are coupled to the PCB 106 housed within the ring-shaped housing 101.
In one aspect, the support 115 is fitted to a post 116. For example, the support 115 may include an open center 117 (shown in
The previous description of the disclosed embodiments is provided to enable any person skilled to the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention.
