WO2001092781A1 - Lightweight, energy-efficient, detachable computer light - Google Patents
Lightweight, energy-efficient, detachable computer light Download PDFInfo
- Publication number
- WO2001092781A1 WO2001092781A1 PCT/US2001/017336 US0117336W WO0192781A1 WO 2001092781 A1 WO2001092781 A1 WO 2001092781A1 US 0117336 W US0117336 W US 0117336W WO 0192781 A1 WO0192781 A1 WO 0192781A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- computer
- led
- computing device
- processing unit
- light
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
- F21V21/14—Adjustable mountings
- F21V21/32—Flexible tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
- F21V33/0004—Personal or domestic articles
- F21V33/0052—Audio or video equipment, e.g. televisions, telephones, cameras or computers; Remote control devices therefor
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1632—External expansion units, e.g. docking stations
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/002—Specific input/output arrangements not covered by G06F3/01 - G06F3/16
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
- G06F3/0202—Constructional details or processes of manufacture of the input device
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- 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
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Definitions
- the invention relates generally to a computer light, and more particularly to a portable energy-efficient light that is compatible with a computer port such as the Universal Serial Bus (USB) port or the IEEE1394 (firewire) port.
- a computer port such as the Universal Serial Bus (USB) port or the IEEE1394 (firewire) port.
- the invention provides a computer light that illuminates the computer keyboard or other items, such as a document that the computer user is working on, in low light environments.
- the computer light is lightweight and has a plug that is connectabie to a computer port to draw power from the computer's power source.
- the computer hght is also energy- efficient so that it does not cause an unnecessary power drain on the power supply of the laptop computer.
- the computer light has an elongated neck that is flexible enough to allow the light head to be positioned with ease but stiff enough to allow the light head to assume a fixed position relative to the computer keyboard or other items when it is not being manipulated.
- Figure 1 illustrates a computer hght according to an embodiment of the invention
- Figure 2 illustrates the computer light connected to a port provided on a laptop computer
- Figure 3 illustrates the computer hght connected to a port provided on a computer keyboard
- Figure 4 illustrates the computer hght connected to a port provided on a main console of a desktop computer
- Figure 5A is a cross-sectional view of a gooseneck cable of the computer light
- Figure 5B is a plan view of the gooseneck cable having a cut-away portion
- Figure 5C is a perspective view of a cut-away section of the gooseneck cable
- Figure 6 A is an exploded perspective view of the LED head assembly
- Figure 6B is a cross-sectional view of the LED head assembly
- Figure 7 illustrates the computer light equipped with an ON-OFF switch
- Figure 8 is a schematic diagram illustrating the components that control the computer light to visually signal an event to the computer user.
- Figure 9 is a flow diagram illustrating the program steps executed by a processor to visually signal an event to the computer user.
- a computer light that is configured to be used with a USB port on a computer, but the invention need not be limited thereto.
- a computer hght embodying the features of the invention may be configured for use with other computer ports, including but not limited to, the IEEE 1394 (firewire) port.
- FIG 1 illustrates a computer light according to an embodiment of the invention.
- the computer hght or lamp 10 has a USB plug 20 to be connected to power and ground leads of a USB connector on a computer (see Figures 2 and 4) or a computer keyboard (see Figure 3).
- the computer hght 10 is a USB-slave device.
- a USB slave device is peripheral device that is controUed by any USB master device using a communication protocol known as the USB protocol.
- Other examples of a USB slave device include scanners, microphones, speakers, and game control devices.
- USB ports have become increasingly popular in recent years because of its high data rates, industry standard support and compact port design.
- An over-molded plastic jacket 30 is formed partially over the USB plug 20.
- the plastic jacket 30 serves as a handle used during the insertion of the USB plug 20 into a corresponding USB connection port on a computer and a stop limit to prevent the USB plug 20 from being inserted too far into the corresponding USB connection port.
- the computer light further includes a gooseneck cable 40 and a light emitting diode (LED) 50.
- the gooseneck cable 40 has a pair of insulated copper wires 41, 42 extending along its center portion to electrically couple the USB plug 20 to the LED 50.
- the gooseneck cable 40 is flexible enough to allow manual positioning of the LED 50 but stiff enough to allow the LED 50 to assume a fixed position relative to the computer keyboard or other items when it is not being manipulated. Also, when the computer light is not in use, the gooseneck cable 40 permits it to be coiled into a compact position.
- the rigidity or stiffness in the gooseneck cable 40 is introduced by a pair of tubings
- each of the tubings 43, 44 is made of metal wire and is formed by winding the metal wire into a tight spiral as shown in the cut-away view in Figure 5B and 5C.
- the outer radius of the spirals of the inner tubing 43 is formed to be substantially equal to the inner radius of the spirals of the outer tubing
- the winding direction of the spirals of the inner tubing 43 is the same as the winding direction of the spirals of the outer tubing 44. In alternative embodiments, the winding directions may be different. Further, the invention is not limited to any one way of introducing rigidity or stiffness to the gooseneck cable 40. Alternative ways are known to those of ordinary skill in the art and the invention is intended to cover all such variations.
- the length of the gooseneck cable 40 is preferably about 16-18 inches. Other lengths of the gooseneck cable 40 may be used in accordance with the invention, but based on predictable uses of the computer hght, especially with laptop computers, it was determined that the length of 16-18 inches would be convenient to the user. This length makes the computer light 10 easy to handle and allows the LED 50 to be positioned over the top, side, next to the base unit, etc.
- the LED 50 produces a super bright white light and is positioned with the gooseneck cable 40 to provide illumination for the computer keyboard, display, side, etc.
- the computer light 10 is inserted into the USB connection port on the host computer or host keyboard, power from the computer's power supply is supplied to the LED 50 by way of the USB plug 20 and the wires in the gooseneck cable.
- the LED 50 requires 3.6-4.0 volts and draws approximately 0.020-0.030 milli-amperes. As such, the LED 50 consumes around 0.1 watts when connected to the computer's power supply. Since the computer provides a 5-volt source, the voltage is stepped down to 3.6 volts before being supphed to the LED 50. Even when it is used constantly and remains ON, the LED 50 decreases the battery life of a laptop computer by only 1 to 3%.
- One example of an LED that has the above characteristics is an LED manufactured by Nichia. Another advantage of the LED is its very high hfe expectation. As a result, unhke light bulbs, which need to be replaced fairly often, with an LED, there is little or no need for replacement.
- the computer light 10 does not need a battery pack as a power source. Consequently, the lamp design is greatly simplified, has less parts and minimizes weight.
- the total weight of the computer hght 10 is less than 3 ounces.
- the computer hght 10 is very durable and shockproof. Unlike lamps that use hght bulbs, there are no parts that can break easily.
- the LED 50 is encased by aluminum cylindrical housing 60 and a plastic clear lens 70.
- One end of the cylindrical housing 60 is fitted over the gooseneck cable 40 so that the cylindrical housing surrounds the LED 50 and the lens 70 is press fitted to the other end of the cylindrical housing 60 to encapsulate the LED 50 inside the cylindrical housing 60.
- Figure 6 A is an exploded perspective view and Figure 6B is a cross-sectional view in the assembled state.
- Line A in Figure 6B represents the fore-aft position of the rear plane of the lens 70 and
- Line B in Figure 6B represents the fore-aft position of the light point source of the LED.
- Line B is behind Line A, as shown in Figure 6B .
- the position of the LED in the preferred embodiment provide useful light without producing the harsh glare that can be distracting to the user.
- the plastic clear lens 70 alters hght beam characteristics of hght emitted by the LED 50, e.g., color, amount of dispersal, etc.
- the surface finish of the lens 70 can be changed to provide different light quality as well as provide a soft glow that can be very pleasing to the user.
- the plastic clear lens 70 may include a silvered reflector that is positioned in front of the LED 50.
- the light from the LED 50 spans a small cone angle and the silvered reflector reflects the hght into desirable position, spread, characteristic or intensity.
- the plastic clear lens 70 may include physical or digital 'mask' to alter the light beam to convey information to the user such as temperature reading, time, etc.
- a lensing element plus a miniature hquid crystal display can be used together to produce a hght beam that when reflected against a wall can provide a clock feature to the user.
- a multicolor LED can be used to convey information to the user through the change in the color.
- Figure 2 illustrates the computer hght 10 connected to a USB connection port 210 provided on a main console 220 of a laptop computer.
- a keyboard (not shown) of the laptop computer is formed integrally on the upper surface of the main console 220 of the laptop computer, and a display 240 is attached in a hinged manner to the main console 220 of the laptop computer.
- Figure 3 illustrates the computer hght 10 connected to a USB connection port 310 provided on a keyboard 330 of a desktop computer.
- the keyboard 330 is electrically connected to a main console 320 of the desktop computer through an electrical cord and plug but is physically separate from the main console 320.
- a display 340 of the desktop computer is, however, is formed integrally on the front face of the desktop computer. In this embodiment, power is supplied from the power supply housed in the main console to the LED 50 through the keyboard 330.
- Figure 4 illustrates the computer light 10 connected to a USB connection port 410 provided on a main console 420 of a desktop computer.
- both the computer keyboard 430 and the computer display 440 are physically separate from the main console 420 and electrically connected to the main console 420 through their respective electrical cords and plugs.
- the main console includes a processor, associated memory, and a power source.
- the power source is typically a DC power source and is configured to supply power to externally connected devices through connection ports, e.g., to USB slave devices through USB connection ports.
- Figure 7 illustrates the computer hght 10 equipped with an ON-OFF switch 71.
- the switch 71 When the switch 71 is in an ON position, a closed circuit is formed and power from the computer's power supply is allowed to be supplied to the LED 50.
- the switch 71 When the switch 71 is in an OFF position, an open circuit is formed and power from the computer's power supply is cut off from the LED 50.
- the computer hght 10 may be provided with a female USB connection port (not shown) to allow a different USB slave device to be connected to the USB connector port of the host computer thereby and be operable when the switch 71 of the computer light 10 is turned off.
- Figure 8 is a schematic diagram of a main console 700 of a computer, illustrating the components that control the computer light 10 to visually signal an event to the computer user.
- the components include a programmed microprocessor 710 and associated memory 730 for sensing or detecting an event, e.g., an incoming email, an internet telephone call, an incoming fax that is electronically delivered to the computer, or a level of network traffic, and a USB controller circuit 720, under the control of the programmed microprocessor 710, for alternatively supplying power from the power source 740 to the connected computer hght 10 and cutting off power from the power source 740 to the connected computer hght 10, to cause the computer light 10 to flicker ON and OFF for a preprogrammed period of time, e.g., 5 seconds, which should be long enough to grab the user's attention.
- the time period for flicker may be controlled by the user by reconfiguring the email program.
- Step 810 is continuously executed by the programmed microprocessor 710 to see if an event, which may be an incoming e-mail, incoming telephone call via internet telephony, an incoming fax message, or any event that the computer recognizes, is sensed or detected. If it is, in Steps 820, 830 and 840, a type of event is distinguished. If the event is an incoming e-mail, the USB controller circuit 720 is controlled to cycle the LED 50 ON and OFF for equal time periods, e.g., ON for 0.5 second and OFF for 0.5 second (Step 825).
- the USB controller circuit 720 is controlled to cycle the LED 50 ON and OFF with a longer ON period than OFF period, e.g., ON for 1 second and OFF for 0.5 second (Step 835). If the event is an incoming facsimile, the USB controller circuit 720 is controUed to cycle the LED 50 ON and OFF with a shorter ON period than OFF period, e.g., ON for 0.5 second and OFF for 1 second (Step 845). For aU other events, the USB controUer circuit 720 is controlled to cycle the LED 50 ON for 1 second and OFF for 1 second (Step 850).
- the different information can be conveyed through the use of color through the use of a multicolor LED.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002500152A JP2004506966A (en) | 2000-05-30 | 2001-05-29 | Lightweight, energy-saving detachable computer light |
AU2001265124A AU2001265124A1 (en) | 2000-05-30 | 2001-05-29 | Lightweight, energy-efficient, detachable computer light |
GB0219935A GB2376289A (en) | 2000-05-30 | 2001-05-29 | Lightweight,energy-efficient,detachable computer light |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US20744600P | 2000-05-30 | 2000-05-30 | |
US60/207,446 | 2000-05-30 | ||
US09/847,195 US6680844B2 (en) | 2000-05-30 | 2001-05-01 | Lightweight, energy-efficient, detachable computer light |
US09/847,195 | 2001-05-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001092781A1 true WO2001092781A1 (en) | 2001-12-06 |
Family
ID=26902238
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2001/017336 WO2001092781A1 (en) | 2000-05-30 | 2001-05-29 | Lightweight, energy-efficient, detachable computer light |
Country Status (5)
Country | Link |
---|---|
US (3) | US6680844B2 (en) |
JP (1) | JP2004506966A (en) |
AU (1) | AU2001265124A1 (en) |
GB (1) | GB2376289A (en) |
WO (1) | WO2001092781A1 (en) |
Cited By (1)
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US6575593B2 (en) | 2000-05-20 | 2003-06-10 | Mark Howard Krietzman | IEEE 1394 or USB powered computer light |
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- 2001-05-01 US US09/847,195 patent/US6680844B2/en not_active Expired - Fee Related
- 2001-05-29 JP JP2002500152A patent/JP2004506966A/en not_active Withdrawn
- 2001-05-29 AU AU2001265124A patent/AU2001265124A1/en not_active Abandoned
- 2001-05-29 WO PCT/US2001/017336 patent/WO2001092781A1/en active Application Filing
- 2001-05-29 GB GB0219935A patent/GB2376289A/en not_active Withdrawn
-
2003
- 2003-11-04 US US10/702,382 patent/US20040090795A1/en not_active Abandoned
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2006
- 2006-01-11 US US11/329,435 patent/US20060109620A1/en not_active Abandoned
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US5615945A (en) * | 1996-03-27 | 1997-04-01 | Noopro Industrial Corporation | Lighting device for use with computers |
US6191699B1 (en) * | 1997-10-30 | 2001-02-20 | Kabushiki Kaisha Toshiba | Portable information device and data transfer designation method |
US6186636B1 (en) * | 1999-06-11 | 2001-02-13 | Design Rite, Llc. | Apparatus for illuminating a portable electronic or computing device |
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US6575593B2 (en) | 2000-05-20 | 2003-06-10 | Mark Howard Krietzman | IEEE 1394 or USB powered computer light |
Also Published As
Publication number | Publication date |
---|---|
US20010048409A1 (en) | 2001-12-06 |
GB2376289A (en) | 2002-12-11 |
JP2004506966A (en) | 2004-03-04 |
US20040090795A1 (en) | 2004-05-13 |
AU2001265124A1 (en) | 2001-12-11 |
GB0219935D0 (en) | 2002-10-02 |
US6680844B2 (en) | 2004-01-20 |
US20060109620A1 (en) | 2006-05-25 |
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