# US 9,255,675 B1 · Portable solar-powered devices

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- Number: US 9,255,675 B1
- Document ID: US9255675B1
- Status: Granted
- Kind: B1
- Application number: 14/731,660
- Filed: 2015-06-05
- Granted: 2016-02-09
- Earliest claimed: 2015-01-22
- Assignees: MPOWERD Inc.
- Applicants: MPOWERD Inc.
- Inventors: John Salzinger; Michael Muehlemann
- Web page: https://patentgrep.com/patent/US9255675B1

## CPC

- F21S 9/037: {the solar unit and the lighting unit being located within or on the same housing}
- F21L 4/08: characterised by means for in situ recharging of the batteries or cells
- F21V 3/026: {being inflatable}
- F21V 15/012: {Housings with variable shape or dimensions, e.g. by means of elastically deformable materials or by movement of parts forming telescopic extensions of the housing body}
- F21V 21/406: {for portable lighting devices}
- F21V 23/009: {the casing being inside the housing of the lighting device}
- F21V 23/0414: {specially adapted to be used with portable lighting devices}
- F21V 31/00: Gas-tight or water-tight arrangements
- H05B 45/00: Circuit arrangements for operating light-emitting diodes [LED]
- H05B 45/10: Controlling the intensity of the light
- H05B 45/20: Controlling the colour of the light
- H05B 47/105: in response to determined parameters
- H05B 47/11: by determining the brightness or colour temperature of ambient light
- H05B 47/12: by detecting audible sound
- H05B 47/19: via wireless transmission
- F21V 21/40: Hand grips
- F21V 23/04: the elements being switches (safety devices F21V25/00)
- F21W 2107/00: Use or application of lighting devices on or in particular types of vehicles
- F21Y 2113/13: comprising an assembly of point-like light sources
- F21Y 2115/10: Light-emitting diodes [LED]
- Y02B 20/40: Control techniques providing energy savings, e.g. smart controller or presence detection
- F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21L: LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS

## Abstract

Solar-powered lighting devices that may be portable and/or collapsible are described. The devices may include a housing including a first wall, a second wall, and one or more side walls between the first wall and the second wall, at least one solar panel to generate solar energy, and a rechargeable battery to store the solar energy generated. The devices may include a plurality of operating modes for controlling lights within the housing, and a microprocessor for controlling the operating modes.

## Claims

### Claim 1

A collapsible solar-powered lighting device comprising:
a housing including a first wall, a second wall opposite the first wall, and one or more side walls extending between the first wall and the second wall, wherein the first wall, second wall, and one or more side walls define an inflatable bladder;
at least one solar panel integrated into an outside surface of at least one of the first wall and the second wall, thereby defining the at least one of the first wall and the second wall that includes the at least one solar panel as an electronics wall of the housing;
a plurality of light-emitting diodes (LEDs) integrated into an inside surface of the electronics wall of the housing, the plurality of LEDs facing an interior of the housing;
a rechargeable battery integrated into the electronics wall between the inside surface of the electronics wall and the outside surface of the electronics wall, the rechargeable battery being electrically connected between the at least one solar panel and the plurality of LEDs, such that the rechargeable battery is configured to supply current to the plurality of LEDs and be recharged by energy provided by the at least one solar panel;
a user element integrated into one or more of the first wall, the second wall, and the one or more side walls, the user element being selectable by a user to control an operating mode of the plurality of LEDs;
a microprocessor integrated into the electronics wall and electrically connected to the user element, the rechargeable battery, and the plurality of LEDs; and
a current regulator operably coupled to the rechargeable battery and the microprocessor, the current regulator regulating current delivered to the plurality of LEDs as controlled by the microprocessor;
wherein the microprocessor is configured to control a plurality of operating modes of the LEDs, at least one of the operating modes including changing a color of light emitted from the housing such that a first selection of the user element causes the plurality of LEDs to emit a first color of light, a second selection of the user element causes the plurality of LEDs to emit a second color of light, a third selection of the user element causes the plurality of LEDs to emit a third color of light, and an nth selection of the user element causes the plurality of LEDs to initiate a transition sequence, the transition sequence causing the plurality of LEDs to change colors between the first color of light, the second color of light, the third color of light, and the nth color of light.

### Claim 2 (depends on 1)

The device of claim 1, wherein each of the first wall and the second wall is substantially square and planar, and wherein the housing is inflatable to convert the housing from a collapsed configuration to an expanded configuration.

### Claim 3 (depends on 1)

The device of claim 1, wherein at least a portion of the housing comprises thermoplastic polyurethane.

### Claim 4 (depends on 1)

The device of claim 1, further comprising a sensor, wherein data collected by the sensor controls at least one operating mode of the device.

### Claim 5 (depends on 4)

The device of claim 4, wherein the sensor is configured to detect light, sound, motion, moisture, or a combination thereof.

### Claim 6 (depends on 1)

The device of claim 1, wherein the plurality of operating modes includes adjusting an intensity of at least a portion of the LEDs to simulate flickering light.

### Claim 7 (depends on 1)

The device of claim 1, further comprising at least one transceiver for receiving wireless input to control at least one operating mode of the device.

### Claim 8 (depends on 1)

The device of claim 1, further comprising a display coupled to the battery for indicating an amount of power remaining in the battery.

### Claim 9 (depends on 1)

The device of claim 1, wherein the plurality of LEDs includes twelve LEDs.

### Claim 10 (depends on 1)

The device of claim 1, further comprising a flexible handle coupled to an outer surface of the electronics wall.

### Claim 11 (depends on 1)

The device of claim 1, wherein the LEDs are configured to emit eight different colors of light, one of the colors of light being white light.

### Claim 12 (depends on 1)

The device of claim 1, wherein the rechargeable battery is a lithium-ion polymer battery.

### Claim 13 (depends on 1)

The device of claim 1, further comprising a flexible handle coupled to the outside surface of the electronics wall, the handle including a first end and a second end each coupled to a portion of the outside surface adjacent to the at least one solar panel, such that a middle portion of the handle between the first and second ends curves above the at least one solar panel.

### Claim 14 (depends on 13)

The device of claim 13, wherein the flexible handle comprises a snap-fit connection or Velcro for adjusting a position of the handle relative to the housing.

### Claim 15 (depends on 1)

The device of claim 1, wherein the housing is watertight.

### Claim 16 (depends on 1)

The device of claim 1, wherein the electronics wall is rigid and comprises a plastic material.

### Claim 17 (depends on 1)

The device of claim 1, further comprising a transistor to control the current delivered to the plurality of LEDs.

### Claim 18

An inflatable solar-powered lighting device comprising:
a housing including a first wall, a second wall opposite the first wall, and one or more side walls extending between the first wall and the second wall, wherein the first wall, second wall, and one or more side walls define an airtight inflatable bladder;
at least one solar panel integrated into an outer surface of the first wall or the second wall;
a plurality of at least six light-emitting diodes (LEDs) affixed to an inside surface of the at least one of the first wall and the second wall, the plurality of LEDs facing an interior of the airtight inflatable bladder defined by the first wall, second wall, and one or more side walls;
a rechargeable battery integrated into the at least one of the first wall and the second wall between the inside surface of the at least one of the first wall and the second wall, and the outside surface of the at least one of the first wall and the second wall, the rechargeable battery being electrically connected between the at least one solar panel and the plurality of LEDs, such that the rechargeable battery is configured to supply current to the plurality of LEDs and be recharged by energy from the at least one solar panel;
a button integrated into one of the first wall or the second wall that includes the at least one solar panel the button being selectable by a user to control an operating mode of the plurality of LEDs;
a microprocessor integrated into the at least one of the first wall and the second wall between the inside surface of the at least one of the first wall and the second wall and the outside surface of the at least one of the first wall and the second wall, the microprocessor being electrically connected between the button, the battery, and the plurality of LEDs; and
a current regulator coupled between the rechargeable battery and the microprocessor, the current regulator regulating current delivered to the plurality of LEDs as controlled by the microprocessor;
wherein the microprocessor is configured to control a plurality of operating modes of the LEDs, at least one of the operating modes including changing a color of light emitted from the housing.

### Claim 19 (depends on 18)

The device of claim 18, wherein the microprocessor includes an algorithm for controlling the LEDs to simulate flickering light or to gradually change color.

### Claim 20 (depends on 18)

The device of claim 18, wherein the battery operates with pulse width modulation, and at least one operating mode of the device includes modifying a duty cycle of the battery to change an intensity of light emitted from the LEDs into the housing.

### Claim 21

A collapsible solar-powered lighting device comprising:
a housing including a first wall, a second wall opposite the first wall, and one or more side walls extending between the first wall and the second wall, wherein the first wall, second wall, and one or more side walls define an inflatable bladder, the first wall and the second wall being square in shape, and the one or more side walls being collapsible between the first wall and the second wall;
a solar panel integrated into an outside surface of the first wall or the second wall, the solar panel defining the first wall or the second wall as an electronics wall of the housing;
a plurality of light-emitting diodes (LEDs) integrated into an inside surface of the electronics wall of the housing, the plurality of LEDs facing an interior of the inflatable bladder defined by the first wall, second wall, and one or more side walls;
a rechargeable battery integrated into the electronics wall of the housing between the inside surface of the electronics wall and the outside surface of the electronics wall, the rechargeable battery being electrically connected between the solar panel and the plurality of LEDs, such that the rechargeable battery is configured to supply current to the plurality of LEDs and be recharged by the solar panel;
a button integrated into the outside surface of the electronics wall, the button being selectable by a user to control an operating mode of the plurality of LEDs; and
a microprocessor integrated into the electronics wall of the housing between the inside surface of the electronics wall and the outside surface of the electronics wall, the microprocessor being electrically connected between the button, the battery, and the plurality of LEDs;
wherein the microprocessor is configured to control a plurality of operating modes of the LEDs, at least one of the operating modes including changing a color of light emitted from the plurality of LEDs.