GB2265978A

GB2265978A - Energy efficient lightbulb

Info

Publication number: GB2265978A
Application number: GB9207870A
Authority: GB
Inventors: John Marshall Middlemas; Christopher John Coop
Original assignee: CHRISTOPHER JOHN COOP
Current assignee: CHRISTOPHER JOHN COOP
Priority date: 1992-04-10
Filing date: 1992-04-10
Publication date: 1993-10-13
Also published as: GB9207870D0

Abstract

The energy efficient light bulb is made of one or two L.E.D.'s and a resistor 6 within a screw or bayonet barrel 1 to form a light bulb. The L.E.D. or L.E.D.'s are wired so current is allowed to pass from the battery to the resistor and L.E.D. or L.E.D.'s. This bulb can be used to fit into existing lamps available. Whether one or two L.E.D.'s are used in the bulb depends on the nature of the energy source and the required brightness of the bulb. The L.E.D. or L.E.D.'s are secure in the barrel of the bulb by the use of glass fibre. <IMAGE>

Description

ENERGY EFFICIENT LIGHT BULB THIS INVENTION RELATES TO LIGHT EMITTING DIODE ILLUMINATED LIGHT BULB.

LIGHT EMITTING DIODES HAVE BEEN USED FOR VARIOUS COMMERICAL PURPOSES i.e. COMPUTER LIGHTING, WATCHES, ETC.

BATTERY POWERED LIGHTS HAVE ALSO BEEN USED FOR A NUMBER OF PURPOSES. HOWEVER, THE USEFULNESS AND LIFE EXPECTANCY OF THE BATTERY POWERED LIGHTS IS RELATED TO THE STRENGH OF THE BATTERY AND THE ENERGY INPUT OF THE BULB.

ACCORDING TO THE PRESENT INVENTION LIGHT EMITTING DIODES (L.E.D'S) ARE USED IN A SCREW OR BAYONET BARREL TO PRODUCE A LIGHT BULB. DEPENDING ON THE VOLTAGE OF ENERGY SOURCES AND THE ENERGY REQUIREMENTS OF THE L.E.D.'S, THE L.E.D.'S CAN BE MOUNTED SINGULARLY OR IN DUPLICATE. THE NATURE OF L.E.D.'S REQUIRE THAT A RESISTOR BE PLACED WITHIN THE CIRCUIT BEFORE THE CURRENT PASSES INTO THE L.E.D.

A SPECIFIC EMBODIMENT OF THE INVENTION WILL NOW BE DESCRIBED BY WAY OF EXAMPLE WITH REFERENCE TO THE ACCOMPANYING DRAWING IN WHICH:- FIGURE 1 SHOW'S ONE L. E D. WITHIN A SCREW FITTING BULB.

FIGURE 2 SHOWS ONE L.E.D. WITHIN A BAYONET FITTING BULB.

FIGURE 3 SHOW'S TWO L.E.D.'S WITHIN A SCREW FITTING BULB.

FIGURE 4 SHOWS TWO L.E.D.'S WITHIN A BAYONET FITTING BULB'S.

FIGURE 5 SHOWS A CIRCUIT DIAGRAM WITH A SINGLE L.E.D.

FIGURE 6 SHOWS A CIRCUIT DIAGRAM OF TWO L.E.D.'S PLACED IN A SERIES.

FIGURE 7 SHOW'S A CIRCUIT DIAGRAM OF TWO L.E.D.'S PLACED IN PARALLEL.

REFERING TO THE DRAWINGS, BOTH SCREW AND BAYONET BARRELS CAN BE CONSTRUCTED SO AS TO FIT INTO EXISTING LAMPS. THE BARREL OF BOTH SCREW AND BAYONET BULBS ARE SEALED AT ONE END WITH A NON-CONDUCTING MATERIAL 3, AS SHOWN IN FIG 1 TO FIG 4. THIS ENABLES A CONTACT PIN 4, AS SHOWN IN FIG.1 TO FIG.4, TO BE SECURED IN THE CENTRE OF THE BARREL. THE OTHER END OF THE BULB IS USED TO INSERT THE L.E.D. OR L.E.D.'S AND THE RESISTOR 6, AS DEMONSTRATED IN FIG 1 TO FIG 4. THE L.E.D.'S ARE PLACED WITHIN THE BULB SO THE TOP OF THE L.E.D. PLASTIC SHOULDER IS THE SAME HEIGHT AS THE TOP OF THE BULB BARREL.

THE L.E.D. 'S AND RESISTOR ARE SOLDERED SO THE CURRENT WILL PASS VIA THE WIRE 7, AS DEMONSTRATED IN FIG 1 TO FIG 4, FROM THE CONTACT PIN THROUGH THE RESISTOR TO THE L.E.D. OR LEDS THE WIRE 9, AS SHOWN IN FIG.1 TO FIG.4. COMES FROM THE L.E.D. AND THEN SOLDERED TO THE SCREW OR BAYONET BARREL. DEPENDING ON THE VOLTAGE REQUIRED AND THE BRIGHTNESS REQUIRED ONE OR TWO L.E.D.'S MAY BE USED AND WIRED IN EITHER SERIES OF PARALLEL FORM AS REQUIRED AND SHOWN IN FIG 5, FIG 6 AND FIG 7. FIG 5 SHOWS THE CIRCUIT DIAGRAM OF A SINGE L.E.D. IN FIG 6 THE CIRCUIT DIAGRAM SHOWS TWO L.E.D.'S IN SERIES AND FIG 7 SHOWS TWO L.E.D'S IN PARALLEL. THE RESISTOR REQUIRED WITHIN THE CIRCUIT CAN BE CALCULATED DEPENDING ON THE L.E.D. OR L.E.D'S USED.

Vs-Vf THE FORMULA THAT CAN BE USED IS RL = If FINALLY, THE L.E.D OR L.E.D. 'S AND RESISTOR ARE MADE SECURE AS GLASS FIBRE 8, AS SHOWN IN FIG 1 TO FIG 4, IS POURED INTO THE SCREW OR BAYONET BARREL.

Claims

1 AN ENERGY EFFICIENT LIGHT BULB COMPRISES AN L.E.D OR L.E.D.'S, WHICH ARE PLACED IN A SCREW OR BAYONET BARREL TO PRODUCE A LIGHT BULB.

2 AN ENERGY EFFICIENT LIGHT BULB AS CLAIMED IN CLAIM 1, CAN BE MOUNTED SINGULARLY OR IN DUPLICATE. THE DUPLICATE L.E.D. MOUNTING CAN BE WIRED IN EITHER SERIES OR PARALLEL.

3 AN ENERGY EFFICIENT LIGHT BULB AS CLAIM IN CLAIM 1 OR CLAIM 2, COMPRISES A RESISTOR PLACED IN THE CIRCUIT. THE RESISTOR IS WIRED TO THE CONTACT PIN AT THE BOTTOM OF THE BULB. THE RESISTOR IS ALSO WIRED TO THE L.E.D. OR L.E.D.'S. ALLOWING THE CURRENT TO PASS THROUGH THE RESISTOR AND L.E.D. OR L.E.D.'S, THE L.E.D OR L.E.D.'S ARE ALSO WIRED TO THE BARREL OR THE BULB CASING.

4 AN ENERGY EFFICIENT LIGHT BULB AS CLAIMED IN CLAIM 2 OR CLAIM 3, IS MADE TO THE SPECIFICATION SO AS TO BE EASILY FITTED TO EXISTING LAMPS.

5 AN ENERGY EFFICIENT LIGHT BULB AS CLAIMED IN CLAIM 4, WHEREIN THE BARREL OF THE BULB IS FITTED AT ONE END WITH THE L.E.D. OR L.E.D'S AND RESISTOR, THE OTHER END COMPRISES OF-AN INSULATING MATERIAL AND A CENTRAL CONTACT PIN.

6 AN ENERGY EFFICIENT LIGHT BULB AS CLAIMED IN ANY PROCEDING CLAIM, WHEREIN GLASS FIBRE IS PLACED IN THE BARREL OF THE BULB ENSURING THE L.E.D. OR L.E.D.'S AND RESISTOR ARE SECURE.