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| United States Patent Application |
20080242190
|
| Kind Code
|
A1
|
|
Hofer; Russell D.
;   et al.
|
October 2, 2008
|
Novelty LED-projection message balloon
Abstract
Described herein is a novelty led-projection message balloon for allowing
a delightful and novel method of communicating endearing messages and/or
animation. The inventive device includes a circuit board, lens assembly,
housing, and power source. The circuit board consists of LEDs, a
microcontroller, interfacing circuitry, spring brushes, a position
detector, and a motor. The power supply provides power to the housed
circuit board mounted inside a balloon. The circuit board spins with
light emitting elements that are projected via a lens assembly onto the
balloon inner wall. The elements are rapidly turned on-off in a sequenced
manner to give the illusion of a message or animation (through the
persistence of vision) being projected onto the exterior of the balloon.
| Inventors: |
Hofer; Russell D.; (Saint Louis, MO)
; Feldkamp; Jonathan Robert; (Gardner, KS)
; Hannah; Gary R.; (Shawnee, MO)
; Hofer; Richard Allen; (Gardner, KS)
|
| Correspondence Address:
|
Russell Hofer
8928 Red Oak Dr
Saint Louis
MO
63126
US
|
| Serial No.:
|
074739 |
| Series Code:
|
12
|
| Filed:
|
March 6, 2008 |
| Current U.S. Class: |
446/220; 340/815.45; 345/82; 362/35; 446/485 |
| Class at Publication: |
446/220; 446/485; 362/35; 345/82; 340/815.45 |
| International Class: |
A63H 27/10 20060101 A63H027/10; A63H 33/26 20060101 A63H033/26; F21K 7/00 20060101 F21K007/00; G09G 3/32 20060101 G09G003/32; G09F 21/10 20060101 G09F021/10 |
Claims
1. A novelty projection device for allowing a delightful and novel method
of communicating endearing messages and/or animation comprising:plurality
of light sources, to be of single color for monochrome displays, multiple
colors for multicolor displays;lens fixture to project light sources onto
the inner surface of a balloon or onto the wall of a building;controller
to independently turn on/off the light sources in a time-sequenced manner
dependant upon rotational position;method for programming the controller
to a customized display;motor to spin light sources upon a rotational
axis;sensor to determine rotational position, and relay this information
to the controller;remote energy source with intelligence (may be derived
from controller) to supply power to the device for short durations.
2. A projection device, as set forth in claim 1, whence the light sources,
lens fixture, controller, and motor are mounted onto a printed circuit
board.
3. A projection device according to claim 2, where in addition, an audio
speaker is connected to the controller to provide sound accompaniment.
4. A projection device according to claim 2, where in addition, a
microphone is connected to the controller to provide a means to turn the
device on for short durations due to audio stimuli such as, but not
limited to a clapping noise and human speech.
5. A projection device according to claim 2, where the plurality of light
sources consists of a linear row of LEDs.
6. A projection device according to claim 2, where the plurality of light
sources consists of a linear row of laser diodes.
7. A projection device according to claim 2, where the plurality of light
sources consists of a single integrated circuit package containing a
plurality of independently controlled light emitting elements.
8. A projection device according to claim 5, where the lens fixture
consists of fiber optics connected to each LEDs' light emitting element
carrying the light to a rigid row of diffusive balls or discs.
9. A projection device according to claim 5, where the lens fixture
consists of a row of spherical lenses mechanically offset from the row of
LEDs such that the lenses approximately focus an image of the LEDs'
emitting elements onto a given surface.
10. A projection device, as set forth in claim 6, where the remote energy
source consists of AC wall power such thatthe projection device is
mounted in the proximity of a wall,the device projects a message onto the
wall of a building.
11. A projection device, as set forth in claim 9, where the remote energy
source consisting ofa set of batteries housed in a handle with an
external switch,a pair of high gauge wires connecting the remote energy
source to the printed circuit board.
12. A projection device according to claim 11, where the device is mounted
within a helium filled balloon such that the balloon provides a diffusive
surface optimal for rear projection display.
13. A projection device according to claim 12, where the device mounted
within the balloon is light enough to float.
14. A projection device according to claim 11, where the device is mounted
within an air filled balloon with the entire structure supported into
mid-air via a long rigid stick (giving the illusion of flotation).
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001]This document describes the novelty led-projection message balloon,
based entirely upon information contained within provisional application
60/908,189 (ATTY. DOCKET NO HOFE-001). The inventors claiming the current
non-provisional application have remained the same as that in the
aforementioned provisional application.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
[0002]Not Applicable.
REFERENCE TO SEQUENCE LISTING, A TABLE, OR A COMPUTER PROGRAM LISTING
COMPACT DISC APPENDIX
[0003]Not Applicable.
BACKGROUND OF THE INVENTION
[0004]1. Field of the Invention
[0005]The present invention relates generally to specialty balloons and
more specifically it relates to a novelty led-projection message balloon
for allowing a delightful and novel method of communicating endearing
messages and/or animation.
[0006]2. Description of the Related Art
[0007]It can be appreciated that specialty balloons and LED signage have
been in use for years. Typically, these are comprised of singing
balloons, light balloons, and other LED message type devices.
[0008]The main problem with conventional specialty balloons is that they
lack the novelty of the proposed balloon. For example, singing/music
balloons (U.S. Pat. No. 6,482,065) can provide entertainment and be used
to add flair to several occasions. They can sing in birthday parties,
cheer someone to get-well soon, etc. However, they lack customization of
the present invention and only provide aural sensation. The proposed
solution complements this type of balloon by providing a unique visual
communication that is customizable to the particular occasion. Another
example includes light balloons (U.S. Pat. No. 5,499,941). Light balloons
are a festive type of balloon that light up either continuously or
flashing. Typically this is done with either a simple light
bulb or an
LED, a battery, and a timing circuit. However, this type of balloon lacks
the novelty of the proposed balloon. The proposed balloon not only is
lit, but it displays a unique customizable message and/or animation for
any particular occasion.
[0009]In addition to specialty balloons, there have been an assortment of
inventions that use LEDs to display a message. Some operate by sequencing
a row of LEDs on-off to give the illusion of a message via the
persistence of vision. Ad balls (U.S. Pat. No. 6,943,762), LED pendulum
clocks (included in U.S. Pat. No. 6,433,761), and LED wands (U.S. Pat.
No. 6,265,984) are a few of the existing devices that operate by
sequencing on-off a row of moving LEDs to give the illusion of a message.
However, none of these devices project an image onto a surface.
Projection allows for a larger message to be displayed. A slightly
different type of device, an LED alarm projection clock (U.S. Pat. No.
6,798,720), does indeed project a limited 7 segment LED time display onto
a wall; however, it does not sequence a row of LEDs on-off. It is also a
much larger device that utilizes direct projection instead of rear
projection. Nor do any of the aforementioned LED devices attempt to
reside within a floating balloon; they are far too heavy to reside in a
floating balloon. Since the present invention resides in a balloon, this
adds to its flair and novelty. In addition, the mentioned LED devices
typically have limited customizability. The present invention is a unique
application of LED technology that is novel and innovative.
[0010]In these respects, the novelty led-projection message balloon
according to the present invention substantially departs from the
conventional concepts and designs of the prior art, and in so doing
provides an apparatus primarily developed for the purpose of allowing a
delightful and novel method of communicating endearing messages and/or
animation.
BRIEF SUMMARY OF THE INVENTION
[0011]In view of the foregoing disadvantages inherent in the known types
of specialty balloons and LED signage now present in the prior art, the
present invention provides a new novelty led projected message balloon
construction wherein the same can be utilized for allowing a delightful
and novel method of communicating endearing messages and/or animation.
[0012]The general purpose of the present invention, which will be
described subsequently in greater detail, is to provide a new novelty
led-projection message balloon that has many of the advantages of the
specialty balloons mentioned heretofore and many novel features that
result in a new led-projection message balloon which is not anticipated,
rendered obvious, suggested, or even implied by any of the prior art
specialty balloons and LED signage, either alone or in any combination
thereof.
[0013]To attain this, the present invention includes a spinning circuit
board 20 with light emitting elements 21 that are projected via a lens
assembly onto the balloon. The elements are rapidly turned on-off in a
sequenced manner to give the illusion of a message or animation (through
the persistence of vision) being projected onto the exterior of the
balloon.
[0014]The present invention generally comprises a housing containing both
a circuit board 20 and lens assembly 30. The circuit board consists of
LEDs 21, a microcontroller 22, interfacing circuitry 23, and a position
detector 25. The lens assembly 30 consists of eight lenses 31 and a
mounting structure 32. The briefly described housing 40 and its contents
are contained inside a balloon. An external power source 60, contained in
a plastic case the shape of a handle 64, is connected to the housing with
high gauge wires 67,68.
[0015]There has thus been outlined, rather broadly, the more important
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.
[0016]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 and to the
arrangements of the components set forth in the following description or
illustrated in the drawings. The present invention is capable of other
embodiments and of being practiced and carried out in various ways. The
inventors have contemplated that the claimed subject matter might also be
embodied in other ways, in conjunction with other present or future
technologies. The description of this particular embodiment is not
intended to limit the scope of this patent. 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.
[0017]A primary object of the present invention is to provide a novelty
led-projection message balloon that will overcome the shortcomings of the
prior art devices.
[0018]An object of the present invention is to provide a novelty
led-projection message balloon for allowing a delightful and novel method
of communicating endearing messages and/or animation.
[0019]Still another object is to provide a novelty led-projection message
balloon that is able to float and display a message.
[0020]Still yet another object is to provide a novelty led-projection
message balloon that is able to be customized to display a unique message
and/or animation.
[0021]Yet another object is to provide a novelty led-projection message
balloon that enlivens a festive event by creating a particular mood.
[0022]Other objects and advantages of the present invention will become
obvious to the reader and it is intended that these objects and
advantages are within the scope of the present invention.
[0023]To the accomplishment of the above and related objects, this
invention may be embodied in the form illustrated in the accompanying
drawings, attention being called to the fact, however, that the drawings
are illustrative only, and that changes may be made in the specific
construction illustrated.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING
[0024]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:
[0025]FIG. 1 is a perspective view of the present invention.
[0026]FIG. 2 is a perspective view of the circuit board.
[0027]FIG. 3 is a perspective view of the lens assembly.
[0028]FIG. 4 is a perspective view of an exploded housing.
[0029]FIG. 5 is a perspective view of an exploded cylindrical shaft.
[0030]FIG. 6 is a perspective view and schematic diagram of the power
source.
[0031]FIG. 7 is an exploded/assembly view of the present invention showing
all of the components.
[0032]FIG. 8 shows an alternate component of the given embodiment; the
alternate component is a single integrated circuit package containing
eight independently controlled light emitting elements.
DETAILED DESCRIPTION OF THE INVENTION
[0033]With reference now to the drawings, and in particular to FIGS. 1-8
thereof, a new novelty led-projection message balloon embodying the
principles and concepts of the present invention and generally designated
by the reference numeral 10 will be described.
[0034]Turning now descriptively to the drawings, in which similar
reference characters denote similar elements throughout the several
views, the attached figures illustrate a novelty led-projection message
balloon 10, which comprises a circuit board 20, lens assembly 30, housing
40, power source 60, and a balloon 11. The circuit board consists of LEDs
21, a microcontroller 22, interfacing circuitry 23, spring brushes 24, a
p
hotointerrupter 25, and a motor 26. The lens assembly 30 consists of
eight lenses and a mounting structure. The housing consists of two end
caps, a cylindrical shaft, a clear tube, and two mounting poles. The
power source is to consist of four AA batteries, a battery holder, a
button switch, a plastic handle case, a panel mount connector, a cable
connector, and two twisted 30 AWG stranded wires. The balloon is
typically filled with helium or air.
[0035]The circuit board 20 consists of LEDs 21, a microcontroller 22,
interfacing circuitry 23, spring brushes 24, a photointerrupter 25, and a
motor 26. The circuit board is very small, designed to be of light
construction. A microcontroller 22, eight LEDs 21, a photointerrupter 25,
a motor 26, and other miscellaneous circuitry 23 reside on the circuit
board. A microcontroller 22 resides on the circuit board for the purpose
of interfacing with eight LEDs 21, a motor 26, and a p
hotointerrupter 25.
Miscellaneous circuitry 23 includes but is not limited to resistors,
capacitors, a voltage regulator, and power transistors. Only two inputs
for power exist on the circuit board. These exist in the form of two sets
(doubled for reliability) of spring brushes 24 mounted on the end of the
circuit board. A programming device is used to interface between the
circuit board and a personal computer. Programming of the microcontroller
occurs through the power inputs. This is accomplished through the novel
usage of a comparator that may be part of the microcontroller 22. An
encoded stream of two positive DC levels are used to program the
microcontroller 22. The stream is connected to one of the inputs on the
microcontroller. The microcontroller compares this voltage to a reference
voltage to determine if a 1 or 0 is being sent. Since the encoded stream
consists of two positive DC levels, the voltage regulator is able to
maintain power to the processor.
[0036]The number of LEDs 21 is arbitrary; they could be of a greater or
smaller quantity. The colors of the LEDs may include a multiplicity of
colors to include, but not limited to all colors of the visible spectrum.
If red/green/blue capable LEDs are used, full color projection is
possible. An alternative solution for full color projection includes
placement of three separate green, red, and blue LEDs next to each other.
Furthermore, placement of a number of LEDs on the top and bottom of the
circuit board may allow for greater light output. Such a design would
entail two lens assemblies. Yet another alternate full color solution
would entail the interlocking of three circuit boards. Each board would
contain a separate color LED and its own lens assembly. Each one of the
interlocked circuit boards would fit together to form a triangular prism.
Pads on the edge of each board would be soldered to perform necessary
connections between the three circuit boards. Yet another alternative
includes the usage of ultraviolet LEDs. The balloon surface may be of a
fluorescent material to excite a visible image on its surface. In
addition to LEDs, other light emitting devices, such as laser diodes may
be used. Still yet another alternative is to use a single packaged
integrated circuit 70 in lieu of eight separate LED packages. The single
package would contain eight light emitting elements 72 collinearly
aligned on the die; nine pins 71 (grounds are common) on the package
would independently control each one of the elements. The light emitting
elements may also be oriented in a diagonal pattern to improve heat
dissipation and facilitate routing. This alternative has the advantage of
only requiring one lens and consequently a significant decrease in size,
weight, complexity, and cost. A variation of this alternative would
include a total of 24 light emitting elements, eight of each primary
color; this would allow full color projection. Another method to allow
full color projection would encompass using three LED integrated circuits
70, each of a different primary color. By using offset lenses, the three
single integrated circuits 70 would be allowed to project on top of each
other.
[0037]Also, the choice of a photointerrupter is arbitrary. Other position
detecting devices 25 may be used, to include but not limited to p
hoto
reflectors, magnetic sensors, p
hoto diodes, etc. The present invention is
described using a microprocessor 22 to perform embedded control, and thus
relies on software to respond to inputs and generate outputs. As those
well practiced in the art will appreciate, the present invention may also
be implemented using programmable logic, a hardware logic processor,
state machine, or micro-sequencer. Generally, the functions currently
implemented in software may be implemented in hardware or any combination
of hardware and software. In addition, the method for programming the
device is not limited to the above description that uses two power input
pins. Other methods may not use an electrical form of communication at
all. For example, the LED lights themselves may be used as an output
signal for an external programming device. The photointerrupter may be
used as an input for an external programming device with an infrared
light output. With this scheme, the device may be programmed externally
with no physical connection.
[0038]The lens assembly 30 consists of eight lenses 31 and a mounting
structure 32. The lens assembly is a plastic molded part consisting of
eight lenses. The lens assembly is clear with the exception of cone-like
structures that protrude on the side opposite of the eight lenses. The
lens assembly includes mounting structures on one of the longitudinal
ends as well as having mounting legs. On one end of the structure an axle
protrudes. On the other end, a more complex motor mounting structure
exists 32. The lens assembly 30 may be designed to not include the lenses
31 as part of the structure. The lenses 31 may be separately snapped into
the lens assembly 30. The construction method of the lens assembly 30
need not be limited to a plastic molding, but other manufacturing methods
may be used. An alternative to lenses involves a fiber optic connected to
each LED's light emitting element. The fiber optic would carry the light
to a diffusive ball or disc. The eight diffusive balls would be connected
in a rigid vertical row. In this alternative, the LEDs could be spaced
close together, and the size of the circuit board would be reduced.
Consequently, it would not be necessary to have a clear tube 44 or end
cap 42. This would allow the circuit board to freely swing the diffusive
balls to create an image, in a similar manner to that which will be later
discussed for the embodiment.
[0039]The housing consists 40 of two end caps 41, 42, a cylindrical shaft
43, a clear tube 44 and two mounting poles 45, 46. The two end caps will
be referred to as end cap 1 41 and end cap 2 42. The two mounting poles
will be referred to as mounting pole 1 46 and mounting pole 2 45. End cap
1 41 is described as follows. End cap 1 41 may be made of clear or opaque
material. There is a cylindrical hole in the middle of end cap 1 41. End
cap 1 41 also has a 180 degree cylindrical wedge. A cylindrical
protrusion exists on the outer side of end cap 1 41. End cap 2 42 is
described as follows. End cap 2 42 may be made of clear or opaque
material. There is a blind hole in the center of end cap 2 42 serving as
a bushing. A cylindrical protrusion exists on the outer side of end cap 2
42. The cylindrical shaft 43 consists of an electrically conductive
cylindrical pin 49, an insulating tube 48, an electrical conductive
cylinder 47, and a silicon decoupling sleeve 50. The insulating tube 48
is placed around the bottom of the conductive pin 49. The electrically
conductive cylinder 47 is then placed over the insulating tube 48. A
silicon decoupling sleeve 50 is placed upon the other end of the
conductive pin 49. The clear tube 44 is an extruded vinyl or other
optically clear tubing of sufficient thickness to provide rigid
structure. Mounting pole 1 46 consists of a hollow tube with a balloon
filling piece at the bottom. Mounting pole 2 45 consists of a hollow tube
with a round cone section attached at the top. The cylindrical shaft 43
is inserted into the hole of end cap 1 41. The cylindrical shaft will
protrude outside of the outer side of end cap 1 41. End cap 1 41 may be
inserted into the clear tube. End cap 2 42 may be inserted into the other
end of the clear tube. Mounting pole 1 46 may be inserted into the
cylindrical protrusion existing on end cap 1 41. Mounting pole 2 45 may
be inserted into the cylindrical protrusion existing on end cap 2 42. End
cap 1 41 may be intentionally made of a clear material to allow infrared
light to pass through. Mounting pole 2 45 may be replaced with a string.
In this case, it would be tied to end cap 2 42.
[0040]The power source 60 is to consist of four AA batteries 61, a battery
holder 62, button switch 63, a plastic handle case 64, a panel mount
connector 65, a cable connector 66, and two twisted 30 AWG stranded wires
67, 68. The two twisted 30 AWG stranded wires will be referred to as wire
1 67 and wire 2 68. Four AA batteries 61 are an off-the-shelf purchased
item. The battery holder 62 is an off-the-shelf purchased item. It is
designed to connect four AA batteries in series. The button switch 63 is
a momentary single pole single throw mechanical spring loaded switch. The
plastic case 64 is custom molded to resemble a handle. It allows for
mounting the battery holder 62, the button switch 63, and the panel mount
connector 65. The two 30 AWG stranded wires 67, 68 are an off-the-shelf
item. They have been chosen to be durable and as light as possible. The
length of the 30 AWG stranded wires 67, 68 is 4 feet. The panel mount
connector 65 has two terminals where wires may be soldered onto. The
cable connector 66 is a two-terminal connector with some form of strain
relief. It mates to the panel mount connector 65. The mating is keyed.
The batteries 61 are inserted into the battery holder 62. The battery
holder 62 is mounted inside the plastic handle case 64. The button switch
63 is housed into the plastic handle case 64. The panel mount connector
66 is mounted into the top of the plastic case 64. The button switch 63
is placed such that one may hold the plastic handle 64 and conveniently
press the button switch 63. The button switch's throw is connected to the
positive lead of the battery holder 62. The first terminal of the panel
mount connector 65 is soldered to the pole of the button switch 63. The
second terminal of the panel mount connector 65 is soldered to the
negative lead of the battery holder 62. One end of wire 1 67 is soldered
to the first terminal of the cable connector 66. One end of wire 2 68 is
soldered to the second terminal of the cable connector 66. The cable
connector 66 is plugged into the panel mount connector 65. Four AA
batteries 61 may be replaced with a different type of battery or number
of batteries of suitable voltage and current-carrying capabilities. The
battery holder 62 may be modified to suit such an alternate application.
The momentary switch 63 may be replaced with a toggle switch. The switch
need not be a button, but may be an alternate to include a toggle,
rocker, slide, etc. It may be practical to use a momentary switch in
addition to a simple circuit to allow for toggle action. A timer may be
incorporated to allow for a minimum and/or maximum on-time. The
microcontroller 22 of the circuit board 20 could also be used to allow a
predefined on-time when power is applied. The microcontroller 22 would be
reset by using a momentary switch to temporarily remove power (instead of
temporarily applying power) from the circuit board 20. The plastic case
64 may be molded to accommodate any number of designs. This has the
benefit of providing a themed appearance to the device. The length of the
two 30 AWG stranded wires 67, 68 is arbitrary, and may be modified to
suit the desired application. The 30 AWG wires 67, 68 may be replaced
with a coaxial cable, a two-conductor flat cable, or other dual conductor
cable.
[0041]The balloon 11 to be used with the present invention may be filled
with helium. The balloon to be used is a latex balloon with a radius of
17 inches when inflated with helium. The balloon 11 need not be latex,
but may also be of semi-transparent Mylar or other suitable material. The
inflated radius of the balloon 11 may be of varying sizes depending upon
the application. The medium that the balloon 11 is filled with may
include air. In this case, the invention would need to be held afloat
with a stick. It is also possible that other medium may be suitable for a
particular application. Also, the balloon 11 may be of the type with a
rubber hook or disc imbedded into the balloon's material. This would
facilitate mounting of the device within the balloon.
[0042]The lens assembly 30 is inserted into the circuit board 20. The lens
assembly 30 holds the circuit board's motor in a specific location. The
lens assembly 30 is held in place by applying a drop of epoxy (or other
suitable glue) on the feet that protrude through the bottom of the
circuit board 20. The circuit board 20 is inserted into a housing 40
(assuming the housing has been assembled as previously described) as
follows. Both mounting pole 1 46 and mounting pole 2 45 are removed. End
cap 1 41 of the housing is removed. The open end of the silicon
decoupling sleeve 50 of end cap 1 41 is placed around the shaft of the
circuit board's motor 26; at the same time, the brushes 24 on the circuit
board 20 should be twisted to apply tension to end cap 1's cylindrical
shaft. One set of brushes will come in contact with the cylindrical
shaft's center conductor 49; the other set of brushes will come in
contact with the outer conductor 47. To allow insertion, the 180 degree
cylindrical wedge of end cap 1 41 should be positioned opposite of the
circuit board's photointerrupter 25. End cap 2 42 is removed from the
housing's clear tube 44. The circuit board 20 is inserted into the clear
tube 44. End cap 1 41 can now be fit into the clear tube. End cap 2 42 is
placed into the clear tube such that the lens assembly's axle rests
inside end cap 2's bushing. End cap 2 42 now has a friction fit into the
clear tube. The two 30 AWG wires 67, 68 from the power source are fed
through mounting pole 1 46. Wire 1 67 is soldered to the outer conductor
of the housing's cylindrical shaft (the cylindrical shaft protrudes
outside of end cap 1 41). Wire 2 68 is soldered to the center conductive
pin of the housing's cylindrical shaft. Mounting pole 1 46 is inserted
into the cylindrical protrusion existing on end cap 1 41. Mounting pole 2
45 is placed into the cylindrical protrusion on End cap 2 42. The
assembly can now be inserted into a deflated balloon 11. The assembly is
stretched into the balloon until the housing is contained completely
within the balloon. The balloon 11 can now be filled with helium. When
helium stops being blown into the balloon, mounting pole 1 46 acts a
check valve preventing deflation of the balloon. The circuit board and
the housing's clear tube should reside close to the center of the
balloon. If mounting pole 2 were replaced with a string, it would be tied
to a rubber loop as part of the balloon and a ring being part of end cap
2 42.
[0043]If the circuit board 20 were to use laser diodes instead of LEDs 21
for the light emitting devices, this would enable the balloon to take on
a wider range of sizes and still maintain focus and high brightness. It
is conceivable that a slightly larger housing (to allow heat dissipation)
could be used to project high power laser diode's onto a balloon of much
greater size, i.e. a size of several feet or possibly up to hundreds of
feet in diameter.
[0044]This device could be modified slightly by removing the power source
and using an AC power source instead. Of course, the circuit board 20
would need some modifications to accept this type of power. Laser diodes
may need to be used instead of LEDs 21 in this application to be
effective. The device could be mounted on the ceiling next to a wall,
angled towards the wall itself. The device could then project words and
images onto the wall. The wall need not be of opaque material. A glass
wall could be used in conjunction with a diffusive sticker. The sign
could then be read from the exterior of a building. This type of sign
could be a tactful way to advertise. Another variation of this device
includes a microphone or suitable sensor to pick up tapping on the
balloon. During inactive periods of time the microcontroller 22 would be
in a low power consumption state. When the balloon is tapped, the
microcontroller would be awakened to display a message. After the message
is displayed, the microcontroller 22 would go into a sleep mode. An
additional variation of this device includes a small speaker mounted onto
the circuit board. This would allow the device to play a musical melody
or speak a message in conjunction with displaying the message.
[0045]When the power source's button switch 63 is activated, power runs
through its wires up into the balloon. The microprocessor 22 is set into
an awake state. The circuit board's microcontroller 22 operates the motor
26. The motor 26 will spin the circuit board 20 and lens assembly 30
within the housing 40. The housing 40 and balloon 11 remain fixed
relative to the circuit board 20 and lens assembly 30. The
microcontroller 22 can adjust the speed of the motor 26 by applying PWM
(pulse width modulation) to its output. The desired speed of the motor 26
is approximately 15 revolutions per second or greater. The desired speed
is adjusted by observing the current speed as follows. As the circuit
board 20 spins, the microprocessor 22 can detect a revolution from the
circuit board's photointerrupter 25. During half of the revolution, the
photointerrupter 25 is blocked by end cap 1's 180 degree cylindrical
wedge. For the other half of the revolution, the photointerrupter 25 is
not blocked. This allows the circuit board 20 to determine both the
starting position and average spinning speed. From this information, the
microcontroller 22 can adjust the speed of the motor to some desired
value. Also, assuming a reasonably constant spinning rate, the
microcontroller 22 can now accurately predict the position of the board
relative to the housing 40, and thus the balloon 11.
[0046]The LEDs 21 are spaced in the focusing plane of the lens assembly's
lenses. The magnification of the LEDs' light emitting elements is the
ratio of the distance from the lenses to the balloon relative to the
distance of the lenses to the light emitting elements. If the correct
focal length lenses are chosen, the lens will project the LED's light
emitting element onto the surface of the balloon. In addition, if
everything is configured correctly, the eight LEDs on the circuit board
will project onto the balloon as eight consecutive squares in a vertical
line. The microcontroller sequences the LEDs on-off as the device spins
each revolution. The circuit board 20 and lens assembly 30 are spinning
greater than the eyes perception (.about.15 frames per second). This
allows the microcontroller 22 to sequence the LEDs 21 on and off to form
the perception of a message or image being projected onto the balloon. In
addition, different messages may be programmed into the microcontroller
22 as described earlier. In order to connect the microcontroller 22 to a
programmer, one would unplug the handle from the 60 power source's cable
connector. The power source's cable connector 66 could then be plugged
into a programmer.
[0047]As to a further discussion of the manner of usage and operation of
the present invention, the same should be apparent from the above
description. Accordingly, no further discussion relating to the manner of
usage and operation will be provided.
[0048]With respect to the above description then, it is to be realized
that the optimum dimensional relationships for the parts of the
invention, to include variations in size, materials, shape, form,
function and manner of operation, assembly and use, are deemed readily
apparent and obvious to one skilled in the art, and all equivalent
relationships to those illustrated in the drawings and described in the
specification are intended to be encompassed by the present invention.
[0049]Therefore, the foregoing is considered as illustrative only of the
principles of the invention. Further, since numerous modifications and
changes will readily occur to those skilled in the art, it is not desired
to limit the invention to the exact construction and operation shown and
described, and accordingly, all suitable modifications and equivalents
may be resorted to, falling within the scope of the invention.
* * * * *