# Patent

## Title
Cooler with LED lighting

## Abstract

A cooler that utilizes multiple LEDs to illuminate an entire interior is disclosed herein. The LEDs are activated by a magnetic reed switch positioned between an inside liner and an outer liner of the cooler. A magnet is positioned in a lid. Removal of the magnetic field of the magnet when the lid is in an open state allows the magnetic reed switch to complete a circuit from a battery to the LEDs thereby allowing the LEDs to illuminate the entire interior chamber of the cooler.

## Background
CROSS REFERENCE TO RELATED APPLICATION
Not Applicable
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
Not Applicable
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention generally relates to portable beverage coolers.
2. Description of the Related Art
The prior art discusses various coolers, including coolers with lighting.
Winslow, U.S. Pat. No. 4,754,376 for an Automatic Ice Chest Light discloses a lighting device (light bulb) attached to n interior surface of a lid of an ice chest that is automatically activated when the lid is raised and deactivates when the lid is closed by way of a mercury switch.
Bania, U.S. Pat. No. 6,182,462 for an Internally Illuminated Cooler Box, discloses an incandescent light bulb built into an internal wall of a lid of a cooler box and which is activated by an automatic spring loaded switching mechanism.
Pashley et al., U.S. Pat. No. 6,726,341 for a LED Illumination For Cold Storage Compartments discloses the use of LED lighting for a cold storage compartment.
Blanchard et al., U.S. Pat. No. 6,519,965 for an Externally Illuminated Cooler Box, discloses an incandescent light bulb built into an external side wall of a cooler box and which is activated by a switching mechanism.
Wyatt, U.S. Pat. No. 6,997,007 for a Light Assembly And Cooler System discloses a light assembly positioned on a front wall of a cooler and having an interior illumination panel and an exterior illumination panel which is controlled by a switch that deactivates the lighting when the lid is closed.
Incandescent lights have heat-driven emissions which use an electric current through a filament and produce light along with heat. This light source is completely useless for application to a cooler since it directly takes away from the basic functionality of a cooler. Fluorescent lights use a gas-discharge lamp and electricity to excite mercury vapor, producing a short-wave ultraviolet light that causes a phosphor to fluoresce, in turn producing actual, visible light. This type of light source is cost efficient however requires a ballast to regulate current through a bulb or lamp. Ballasts take up volume and generate heat. Since volume maximization is a primary attribute to be contained, a fluorescent light with a ballast is an improbable solution. Also, fluorescent bulbs are extremely fragile, with the possibility of breakage upon closing of the lid which would expose the hazardous gas and mercury within the cooler.
The prior art, although providing various means for illuminating a cooler, has still not addressed all of the problems with illuminating a portable cooler. The entire interior of the cooler should be illuminated and should be illuminated for an extensive period without an external power source. Also, the illumination should only create a minimal amount of heat in order for the cooler to serve its primary function of cooling the contents of the cooler. The cooler should also have an “automatic” switch to activate the illumination, and the switch should be durable.
BRIEF SUMMARY OF THE INVENTION
The cooler of the present invention resolves the problems associated with prior art coolers by providing a cooler that utilizes multiple light emitting diodes (“LED”) to illuminate the entire interior of the cooler by unique placement of the LEDs which allows for a minimal number of LEDs to minimize power consumption. The LEDs are activated by a magnetic reed switch positioned between an inside liner and an outer liner of the cooler. A magnet of the magnetic reed switch is positioned in the lid. A magnetic field of the magnet is in an activating location when the lid is in an open state wherein the magnetic reed switch completes a circuit from a battery to the LEDs thereby allowing the LEDs to illuminate the entire interior of the chamber of the cooler. Each of the LEDs is preferably positioned along an upper region of the main body in which the upper region extends from an upper edge of the main body to 2 inches below the upper edge. The interior chamber preferably has a volume ranging from 40 quarts to 50 quarts. The LEDs can preferably illuminate the interior chamber of the cooler for at least four hours of continuous use.
The present invention is generally directed to a portable cooler with LED lighting. An illustrative embodiment of the cooler includes a lid and an interior chamber. The cooler has a main body having a plurality of insulated walls that define an interior chamber and a lid attached to the main body wherein the lid is moveable from a closed state to an open state. A plurality of LEDs are positioned along an upper region of the main body and each of the plurality of LEDs has a millicandela ranging from 4000 to 20000. Further included is a nine volt battery for providing power to each of the plurality of LEDs. There is at least one 1.5 watt 5% tolerance 220 ohm resistor positioned between the nine volt battery and the plurality of LEDs. A magnetic reed switch is positioned between an inside liner and an outer liner of the cooler. A magnet is positioned in the lid wherein the magnetic field of the magnet is in an activating location when the lid is in an open state and wherein the magnetic field is removed from the magnetic reed switch when the lid is in an open state which allows the magnetic reed switch to close and complete a circuit from the battery to the plurality of LEDs allowing the plurality of LEDs to automatically illuminate the interior of the chamber. The present invention is further directed to a circuit for a lighting system for the cooler having a lid and interior chamber.
The present invention further comprises a circuit for a lighting system for a cooler having a lid and an interior chamber. The circuit comprises a plurality of LEDs, each of the LEDs having a millicandela ranging from 4000 to 20000, a nine volt battery, at least one 1.5 watt 5% tolerance 220 ohm resistor positioned between the nine volt battery and the plurality of LEDs and a switch positioned between the nine volt battery and the plurality of LEDs. The switch is in a closed state when the lid of the cooler is open, allowing power to flow to each of the plurality of LEDs for illuminating the interior chamber of the cooler.
In another embodiment of the present invention, the cooler capable of illuminating an exterior are comprises a main body having a plurality insulated walls that define an interior chamber, each of the insulated walls having an interior surface and an exterior surface. A lid is attached to the main body, the lid moveable from a closed state to an open state. The cooler further comprises a plurality of LEDs positioned along the outer surface of an insulated wall of the plurality of insulated walls of the main body. Each of the LEDs has a millicandela of at least 20000. The cooler comprises a nine volt battery for providing power to each of the plurality of LEDs and at least one 1.5 watt 5% tolerance 220 ohm resistor positioned between the nine volt battery and the plurality of LEDs. Further included is an on/off rocker switch positioned on the main body, the on/off rocker switch completing a circuit from the battery to the plurality of LEDs allowing the plurality of LEDs to an exterior area to the cooler.
Having briefly described the present invention, the above and further objects, features and advantages thereof will be recognized by those skilled in the pertinent art from the following detailed description of the invention when taken in conjunction with the accompanying drawings.



BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
FIG. 1 is a top perspective view of a preferred embodiment of a cooler.
FIG. 1A is a top perspective view of an alternative embodiment of a cooler.
FIG. 2 is a hinged side elevational view of a preferred embodiment of a cooler.
FIG. 3 is a side elevational view of a preferred embodiment of a cooler.
FIG. 4 is a bottom plan view of a preferred embodiment of a cooler.
FIG. 5 is a top plan view of a preferred embodiment of a cooler.
FIG. 6 is a front elevational view of a preferred embodiment of a cooler.
FIG. 7 is a side elevational view of an alternative embodiment of a cooler.
FIG. 8 is a cross-sectional view along line 8-8 of FIG. 7 illustrating a transparent portion of an outer liner of a main body of a cooler.
FIG. 9 is a top plan view of a main body of a preferred embodiment of a cooler illustrating an open interior of the main body of the cooler.
FIG. 10 is an isolated cross-sectional view of a portion of the cooler along lines 10-10 of FIG. 9.
FIG. 11 is a side elevational view of an inner liner of a main body of a preferred embodiment of a cooler.
FIG. 12 is a top plan view of a lid of an alternative embodiment of a cooler.
FIG. 13 is a cross-sectional view of the lid of FIG. 12 along line 13-13.
FIG. 14 is an isolated view of portion 14 of FIG. 13.
FIG. 15 is a plan view of a main body of a cooler illustrating a magnetic reed switch positioned within an outer liner and inner liner of the main body.
FIG. 16 is a side view of a cooler in a closed lid state with a magnetic reed switch in dashed lines in a main body of the cooler and a magnet in dashed lines in a lid of the cooler with a magnetic field in dashed lines.
FIG. 17 is a side view of a cooler in an open lid state with a magnetic reed switch in dashed lines in a main body of the cooler and a magnet in dashed lines in a lid of the cooler with a magnetic field in dashed lines.
FIG. 18 is a top view of an isolated view of the interior of the cooler.
FIG. 19 is a block diagram of a circuit for a cooler of the present invention.



DETAILED DESCRIPTION OF THE INVENTION
As shown in FIGS. 1 and 1A, the present invention is directed to a portable cooler 20 having a lid 24 and a main body 22 having an interior chamber 21. The lid 24 is preferably made of high density polyethylene (HDPE). The main body 22 comprises an outer liner 26 and an inner liner 34 that defines an interior chamber 21. The lid 24 is attached to the main body 22, and the lid 24 movable from a closed state to an open state. Multiple LEDs 32 are positioned along an upper region of the main body 22. Each of the plurality of LEDs 32 has a millicandela ranging from 4000 to 20000. The cooler 20 also preferably has a pair of wheels 27 and a drain plug 31.
The cooler 20 further comprises at least one battery 41, positioned within a battery compartment, for providing power to each of the plurality of LEDs 32. The battery 41, not shown, preferably has a battery cover with backing made of polypropylene (PP). The preferred thickness of the wall of the backing is approximately 0.100 inch and the preferred weight is approximately 0.010 pounds. Additionally, the battery 41, not shown, preferably has at least a 0.025 inch thick adhesive backed foam on the bottom of the battery 41. The battery 41 is preferably placed in the battery compartment, which is in the upper region of the main body 22 to allow for maximum cooler space. Further, the battery is in close proximity to plurality of LEDs 32 in order to reduce power loss through resistance of the wires and to prevent unnecessary heating of the cooler by having electrical wires conducting electricity positioned throughout the cooler 20.
At least one 1.5 watt 5% tolerance 220 ohm resistor 40 is positioned between a nine volt battery 41 and the plurality of LEDs 32.
The foam of the main body 22 of the cooler 20 preferably weighs approximately 2.6 to 3.0 pounds. The foam of the lid 24 of the cooler roughly weighs between 0.2 to 0.8 pounds. The interior capacity of the cooler 20 is preferably approximately 48 quarts to 50 quarts.
As shown in FIGS. 9-11 and 15-17, the cooler 20 is further defined by an inner liner 34 and an outer liner 26 of the main body 22. A magnetic reed switch 42 is positioned between the inner liner 34 and outer liner 26 of the main body 22 in a compartment 33, which provides for greater protection of the magnetic reed switch 42. The liner is preferably made of high density polyethylene (HDPE). Further, a magnet 45 is positioned in the lid 24, wherein a magnetic field 46 of the magnet 45 is in an activating location when the lid 24 is in an open state, wherein the magnetic reed switch 42 completes a circuit 40 from the battery 41 to the plurality of LEDs 32 thereby allowing the plurality of LEDs 32 to illuminate the interior of the chamber 21 of the cooler 20. As shown in FIG. 11, a distance Ll is preferably approximately 16 inches.
In an alternative embodiment of the present invention illustrated in FIGS. 12-14, the cooler 20 is capable of illuminating an exterior area of the cooler 20 through an LED 32 in a lid illuminating area 35 of the lid 24. The material of the lid illuminating area 35 is preferably transparent allowing for the LED 32 to illuminate an exterior area of the cooler 20.
The cooler 20 comprises a main body 22 having a plurality of insulated walls that define an interior chamber 21. Each of the plurality of insulated walls has an interior surface that is preferably white in color, which is standard in the cooler industry. The white interior surface serves multiple purposes for the cooler 20, in addition to providing a reflecting amplifier for the LEDs 32, allowing for fewer and lower power LEDs 32 to be used while still illuminating the entire interior chamber 21 of the cooler 20.
As shown in FIGS. 2-8, the lid 24 of the cooler 20 is attached to the main body 22 by a plurality of hinges 25, wherein the lid 24 is movable from a closed state to an open state. The hinges 25 are placed on a hinge side of the cooler 20 while the magnetic reed switch 42, not shown, is preferably positioned on an opposite of the hinge side as disclosed below. The cooler 20 preferably has a pair of gripping handles 30 and a pulley handle 29 opposite of the wheels 27. As shown in FIG. 4, the wheels 27 are preferably attached to each other by a rotating shaft 28. As shown in FIGS. 7 and 8, an alternative embodiment has a transparent signage portion that may be illuminated by an LED.
As shown in FIGS. 1, 1A and 18, a plurality of LEDs 32 are positioned along the interior surface of the main body 22 of the cooler, below a rim 23 of the main body 22. The LEDs 32 are the preferred light source for application in the cooler 20 since LEDs are more energy-efficient than traditional light sources, emit low-intensity light, generate the absolute minimum amount of heat and do not take up any volume in the cooler 20. Placement of the LEDs 32 is designed for maximum illumination from the minimal number of LEDS 32, as well as utilizing reflection of the white interior liner. The placement of the LEDs 32 is preferably in the upper region of the cooler 20 where the lid 24 rests when in a closed position. The placement of the LEDs 32 in the upper lip of the cooler 20 allows for physical protection of the LEDs 32 when the lid 24 is in the closed position. Further, by placing the LEDs 32 as close as possible to the rim 23 of the cooler 20, optimal cooler 20 space is maximized. Also, placement of the LEDs 32 in this location allows for the maximum reflection amplification from the interior liner, regardless of the contents inside the cooler 20.
Each of the plurality of LEDs 32 has a millicandela ranging from about 4,000 to roughly 20,000. The LEDs 32 are preferably 5 mm flat top 120 degree LEDs. The 5 mm flat top 120 degree LEDs do not have a focused beam and do not have a domed surface which reduces illumination of the chamber. The invention further comprises a nine-volt battery 41 for providing power to each of the plurality of LEDs 32. To prevent power from the battery being drained quickly, at least one 1.5 watt 5% tolerance 220 ohm resistor 40 is positioned between the nine volt battery 36 and the plurality of LEDs 32.
As shown in FIG. 19, the circuit 40 for a lighting system for a cooler 20 of the present invention comprises a plurality of LEDs 32, each of the plurality of LEDs 32 preferably has a millicandela ranging from 4000 to 20000. The circuit 40 further comprises a nine volt battery 41, and at least one 1.5 watt 5% tolerance 220 ohm resistor 40 positioned between the nine volt battery 41 and the plurality of LEDs 32. A microprocessor or circuit board 43 is also preferably utilized in the circuit 40. A magnetic reed switch 42 is positioned between the nine volt battery 41 and the plurality of LEDs 32. The magnetic reed switch 42 includes two magnetized and flexible blades, preferably hermetically sealed, that overlap and are repulsed in the presence of a magnetic field. A rare earth magnet, preferably having dimensions of 1⁄4 inch by 3⁄4 inch by 1/16 inch, located in the lid 24 generates the magnetic field to open the reed switch. When the lid 24 is opened, the magnetic field is removed and the two magnetized and flexible blades of the reed switch 42 come in contact to close a circuit and activate the LEDs 32 of the cooler 20 thereby allowing power to flow from the battery 41 to each of the plurality of LEDs 32 for illuminating the interior of the chamber 21 of the cooler 20. Those skilled in the pertinent art will recognize that the magnetic reed switch may operate in an opposite manner in which the two magnetized and flexible blades contact in the presence of a magnetic field.
The magnetic reed switch 42 is installed between the inside liner 34 and the outside liner 26 of the main body 22 of the cooler 20, which protects the magnetic reed switch 42 from impact and the elements since the magnetic reed switch 42 contains a hermetically sealed glass housing for the two magnetized flexible blades. Also, the activation by the removal of the magnetic field 46 (as shown in FIG. 17) generated by the magnet 45 in the lid 24 eliminates breakage from wires that must be placed in a lid of a cooler since the magnet 45 is positioned within the lid 24 without the need for wires or other connections.
Alternatively, an on/off rocker switch is positioned on the main body 22 and the on/off rocker switch completes a circuit 40 from the battery 41 to the plurality of LEDs 32 thereby allowing the plurality of LEDs 32 to illuminate an exterior area to the cooler 20.
The LEDs 32 operate at very low temperatures preventing the plastic material of the cooler 20 from melting. Further, the use of LEDs 32 does not affect the inside temperature of the cooler 20. Retaining the inside temperature of the cooler 20 is one of the main priorities of the cooler 20 of the present invention. In turn, this design characteristic does not take away the basic functionality of the cooler.
The use of LEDs 32 to illuminate the inside contents of the cooler 20 in low light situations provides the consumer with the capability to visually see inside the cooler 20 when other light sources are inconvenient or unavailable.
Preferably for an eight LED 32 configuration, only one battery 41 and magnetic reed switch 42 are necessary for the cooler 20. For a sixteen LED 32 configuration, two batteries 41 and two magnetic reed switches 42 are necessary for the cooler 20. Twenty-six gauge stranded wire is also preferably utilized for the electronics of the cooler 20. Two to sixteen resistors 44 are preferably utilized for the cooler 20.
A preferred embodiment of placement of the LEDs 32 in the cooler 20 are illustrated in FIG. 18. In this preferred embodiment, each LED 32 of the pairs of LEDs 32 is positioned 1.25 inches from its pair LED 32. A distance D1 is preferably 11.5 inches. A distance D2 is preferably 4.125 inches. A distance D3 is preferably 6.25 inches. A distance D4 is preferably 1.25 inches. A distance D5 is preferably 7.75 inches. Those skilled in the pertinent art will recognize that other coolers having different dimensions can have different dimensions for the above-mentioned distances without departing from the scope and spirit of the present invention.
From the foregoing it is believed that those skilled in the pertinent art will recognize the meritorious advancement of this invention and will readily understand that while the present invention has been described in association with a preferred embodiment thereof, and other embodiments illustrated in the accompanying drawings, numerous changes modification and substitutions of equivalents may be made therein without departing from the spirit and scope of this invention which is intended to be unlimited by the foregoing except as may appear in the following appended claim. Therefore, the embodiments of the invention in which an exclusive property or privilege is claimed are defined in the following appended claims.

## Claims

1. A portable cooler with LED lighting, the portable cooler comprising:
a main body having an outer liner and an inner liner that defines an interior chamber of the main body;
a lid attached to the main body, the lid movable from a closed state to an open state;
a plurality of LEDs, each of the plurality of LEDS having a millicandela ranging from 4000 to 20000;
a battery;
at least one 1.5 watt 5% tolerance 220 ohm resistor positioned between the battery and the plurality of LEDs; and
a switch positioned between the battery and the plurality of LEDs;
wherein the switch is a magnetic reed switch positioned between an inner liner and an outer liner of the main body of the cooler, and a magnet is positioned in the lid, a magnetic field generated by the magnet is in an activating location when the lid is in a closed state wherein the magnetic reed switch is open and wherein the magnetic field is removed from the magnetic reed switch when the lid is in an open state which allows the magnetic reed switch to close and complete a circuit from the battery to the plurality of LEDs thereby allowing the plurality of LEDs to illuminate the interior of the chamber of the cooler.

2. The portable cooler according to claim 1 wherein each of the plurality of LEDs is positioned along an upper region of the main body, the upper region extending from a rim of the main body to approximately two inches below the rim.

3. The portable cooler according to claim 1 wherein the plurality of LEDs illuminate the interior chamber of the main body for at least four hours of continuous use.

4. The portable cooler according to claim 1 wherein interior chamber has a volume ranging from 40 quarts to 50 quarts.