GB2434029A - Multi-filament light bulb - Google Patents

Multi-filament light bulb Download PDF

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Publication number
GB2434029A
GB2434029A GB0600293A GB0600293A GB2434029A GB 2434029 A GB2434029 A GB 2434029A GB 0600293 A GB0600293 A GB 0600293A GB 0600293 A GB0600293 A GB 0600293A GB 2434029 A GB2434029 A GB 2434029A
Authority
GB
United Kingdom
Prior art keywords
light bulb
bulb
adaptor
elements
electrical elements
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB0600293A
Other versions
GB0600293D0 (en
Inventor
Adrian John Faulkner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB0600293A priority Critical patent/GB2434029A/en
Publication of GB0600293D0 publication Critical patent/GB0600293D0/en
Publication of GB2434029A publication Critical patent/GB2434029A/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K9/00—Lamps having two or more incandescent bodies separately heated
    • H01K9/02—Lamps having two or more incandescent bodies separately heated to provide substitution in the event of failure of one of the bodies

Abstract

A light bulb 6 has two or more independent filaments 4, 5 arranged electrically in parallel. The light bulb may have additional terminals 15, 16, 19, 20 so that it can be switched between filaments by a simple action such as twisting it within its bulb holder 7. The bulb may also comprise an adaptor 8 within which the bulb can be moved to switch between filaments. The bulb preferably has an internal shield (21, fig 9) to stop debris from a spent filament from contacting a working filament. The multiple filaments improve the life of the bulb.

Description

<p>LIGHT BULB</p>
<p>This idea relates to a light bulb with 2 (or more) electric elements inside it.</p>
<p>The electrical element is a small part of the total manufacturing cost of a light bulb, the whole of which is thrown away when this small part fails.</p>
<p>To improve on this the present invention proposes 2 (or more) independent electrical elements inside a single light bulb. They are arranged electrically in parallel'. Only one element is connected to the electricity supply initially, with the other (others) standing by as spares. When the first element eventually bums out then the second element is connected to the electricity supply to give the light bulb a second life, (then the third element for a third life, and so on).</p>
<p>The 2 (or more) electrical elements double (or more) the life of the light bulb for a small addition to the manufacturing cost.</p>
<p>Preferably, the light bulb would be switched to the second (or another) electrical element by a simple action such as moving or rotating the light bulb within its bulb holder.</p>
<p>Preferably, the light bulb would be compatible with existing light bulb holders via an adaptor.</p>
<p>Preferably, the second (and subsequent) electrical elements are protected from debris created by previous electrical elements failing.</p>
<p>Some examples of light bulbs according to the invention will now be described by referring to the accompanying drawings in which:- -Fig 1 shows the light bulb with 2 elements and 4 terminals.</p>
<p>-Fig 2 shows the light bulb with an alternative arrangement of 2 elements and 4 terminals.</p>
<p>-Fig 3 shows the light bulb with 2 elements and 3 terminals.</p>
<p>-Fig 4 shows the light bulb with 4 elements and 4 terminals.</p>
<p>-Fig 5 shows how the light bulb could switch to another electrical element by a simple action such as turning it through 180 degrees within its bulb holder.</p>
<p>-Fig 6 shows how the light bulb could switch to another electrical element by a simple action such as turning it through 90 degrees within its bulb holder.</p>
<p>-Fig 7 shows the light bulb with an adaptor enabling it to be compatible with existing light bulb holders.</p>
<p>-Fig 8 shows an alternative adaptor to make the light bulb compatible with existing light bulb holders.</p>
<p>-Fig 9 shows the light bulb complete with shield to protect the second element from debris created by the first element failing.</p>
<p>-Fig 10 shows an alternative arrangement of the light bulb with shields to protect other elements from debris created by the first element failing.</p>
<p>Referring to these drawings:-Fig 1, Fig 2, Fig 3 and Fig 4 show a variety of ways in which a light bulb according to the invention could have multiple electrical elements 2 connected to electrical terminals 1.</p>
<p>The light bulbs on the left hand side in Fig 5 and Fig 6 shows how only one of the electrical elements 4 is connected to the electricity supply 3 initially. The other element 5 is standing by as a spare.</p>
<p>When the first element 4 eventually bums out then the second element 5 is connected to the electricity supply 3 as shown on the right hand side in Fig 5 and Fig 6. This is achieved by rotating the light bulb about the vertical axis through 180 degrees in Fig 5 and through 90 degrees in Fig 6.</p>
<p>Fig 7 and Fig 8 show an adaptor 8 that will fit within a conventional screw or bayonet light bulb holder 7. The light bulb according to the invention 6 is then bayoneted (as shown) or screwed into the adaptor 8. The bayonet pins 9 fit into the adaptor slots at position 11 so that terminals 15 and 16 on the light bulb connect element 4 to the electrical supply 3. Alternatively, the bayonet pins 9 fit into the adaptor slots at position 12 so that terminals 19 and 20 on the light bulb connect element 5 to the electrical supply in Fig 7 (or via terminals 19 and 16 in Fig 8).</p>
<p>The adaptor 8 in Fig 8 is fitted with an additional pair of terminal connectors 13 and 14 to permit connection of an adjacent pair of terminals on the light bulb 6 to the electric supply 3. The light bulb 6 can be removed from the adaptor 8, rotated through 180 degrees about the vertical axis, then reinserted into the adaptor 8 to connect other electrical elements to the terminal connectors 13 and 14. I.e. element 17 replaces element 4, and element 18 replaces element 5.</p>
<p>Light bulb holders 7 could also be made to function like this without the need for an adaptor 8.</p>
<p>Fig 9 and Fig 10 show a light bulb according to the invention complete with shield 21 to protect other elements from debris created by previous elements failing. 1.</p>

Claims (1)

  1. <p>CLAIMS</p>
    <p>. Two (or more) independent electrical elements inside a single light bulb arranged electrically in parallel' to give the light bulb two (or more) lives.</p>
    <p>. A florescent tube or any light according to claim 1 . A light bulb according to claim 2 which can be switched between electrical elements by a simple action such as moving or rotating it within its bulb holder.</p>
    <p>. A light bulb according to claim 3 which is compatible with existing light bulb holders via an adaptor.</p>
    <p>. A light bulb according to claim 3 that has a shield to protect subsequent electrical elements from debris created by previous electrical elements failing.</p>
    <p>An adaptor to hold a light bulb according to claim 5, and which is compatible with existing light bulb holders.</p>
    <p>Z. A shield to protect subsequent elements in a light bulb according to claim 5, from debris created by previous elements failing.</p>
    <p>. A light bulb substantially as described herein with reference to Figures 1 to 10 of the accompanying drawings.</p>
GB0600293A 2006-01-07 2006-01-07 Multi-filament light bulb Withdrawn GB2434029A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0600293A GB2434029A (en) 2006-01-07 2006-01-07 Multi-filament light bulb

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0600293A GB2434029A (en) 2006-01-07 2006-01-07 Multi-filament light bulb

Publications (2)

Publication Number Publication Date
GB0600293D0 GB0600293D0 (en) 2006-02-15
GB2434029A true GB2434029A (en) 2007-07-11

Family

ID=35911539

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0600293A Withdrawn GB2434029A (en) 2006-01-07 2006-01-07 Multi-filament light bulb

Country Status (1)

Country Link
GB (1) GB2434029A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11388790B1 (en) 2021-08-13 2022-07-12 Daniel John Kraft Self-repairing light bulb and method

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2139762A (en) * 1937-02-01 1938-12-13 Forrest J Major Multifilament lamp
DE2924200A1 (en) * 1979-06-15 1980-12-18 Siemens Ag Multiple filament lamp for traffic lights - has auxiliary secondary filament taking over when main filament burns out
US5345143A (en) * 1992-08-31 1994-09-06 Little Charles T Light bulb with program disc
GB2294806A (en) * 1994-10-17 1996-05-08 Michael John Furnell A filament lamp
FR2754936A1 (en) * 1996-10-22 1998-04-24 Soares Duarte Antoine Dual filament incandescent lamp allowing use after first filament has failed
JPH11126584A (en) * 1997-10-22 1999-05-11 Ntt Power And Building Facilities Inc Three-pole lamp
US6054812A (en) * 1995-09-15 2000-04-25 Lesch; Mark Joseph Multifilament light bulb
GB2397942A (en) * 2003-02-03 2004-08-04 Jonathan Richard Swift Multi-coloured light bulb

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2139762A (en) * 1937-02-01 1938-12-13 Forrest J Major Multifilament lamp
DE2924200A1 (en) * 1979-06-15 1980-12-18 Siemens Ag Multiple filament lamp for traffic lights - has auxiliary secondary filament taking over when main filament burns out
US5345143A (en) * 1992-08-31 1994-09-06 Little Charles T Light bulb with program disc
GB2294806A (en) * 1994-10-17 1996-05-08 Michael John Furnell A filament lamp
US6054812A (en) * 1995-09-15 2000-04-25 Lesch; Mark Joseph Multifilament light bulb
FR2754936A1 (en) * 1996-10-22 1998-04-24 Soares Duarte Antoine Dual filament incandescent lamp allowing use after first filament has failed
JPH11126584A (en) * 1997-10-22 1999-05-11 Ntt Power And Building Facilities Inc Three-pole lamp
GB2397942A (en) * 2003-02-03 2004-08-04 Jonathan Richard Swift Multi-coloured light bulb

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11388790B1 (en) 2021-08-13 2022-07-12 Daniel John Kraft Self-repairing light bulb and method

Also Published As

Publication number Publication date
GB0600293D0 (en) 2006-02-15

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Legal Events

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)