GB2447257A - Light emitting diode replacement lamp for fluorescent light fittings - Google Patents

Light emitting diode replacement lamp for fluorescent light fittings Download PDF

Info

Publication number
GB2447257A
GB2447257A GB0704157A GB0704157A GB2447257A GB 2447257 A GB2447257 A GB 2447257A GB 0704157 A GB0704157 A GB 0704157A GB 0704157 A GB0704157 A GB 0704157A GB 2447257 A GB2447257 A GB 2447257A
Authority
GB
United Kingdom
Prior art keywords
existing
led
fluorescent
light
power supply
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Withdrawn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
GB0704157A
Other versions
GB0704157D0 (en
Inventor
Ronald Deakin
Original Assignee
Ronald Deakin
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 Ronald Deakin filed Critical Ronald Deakin
Priority to GB0704157A priority Critical patent/GB2447257A/en
Publication of GB0704157D0 publication Critical patent/GB0704157D0/en
Publication of GB2447257A publication Critical patent/GB2447257A/en
Application status is Withdrawn legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21KNON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20Light sources comprising attachment means
    • F21K9/27Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
    • H05B33/00Electroluminescent light sources
    • H05B33/02Details
    • H05B33/08Circuit arrangements not adapted to a particular application
    • H05B33/0803Circuit arrangements not adapted to a particular application for light emitting diodes [LEDs] comprising only inorganic semiconductor materials
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING 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
    • F21Y2101/00Point-like light sources
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING 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
    • F21Y2103/00Elongate light sources, e.g. fluorescent tubes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING 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
    • F21Y2103/00Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING 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
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies
    • Y02B20/30Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
    • Y02B20/38Constructional details
    • Y02B20/386Retrofitting in tubes

Abstract

A one piece assembly retro-fit replacement lamp for fluorescent light fitting device with external Light Emitting Diode (LED) light panel and an internally housed LED power supply unit designed to allow the assembly to be installed into an existing fluorescent light fitting to replace the existing light source with a LED light source. The one piece assembly with an internally housed LED power supply when installed in an existing fluorescent light fitting uses the incoming mains power but isolates and makes redundant the fluorescent tube power supply and supplies the correct power output to operate the LED light panel. The assembly can be retro fitted in existing fluorescent light fitting of any length and eliminates the need to replace the existing light fitting when a more efficient and longer life light source is required.

Description

LED (light emitting diode) Retro Device For Fluorescent Light Fittings

This invention relates to retro fitting existing T8 and TI 2 fluorescent light fittings with a LED light panel to replace 18 and T12 fluorescent tubes of any length.

Standard fluorescent light fittings used in the Europe and throughout the world are known as T8 and T12. They use T8 and T12 type fluorescent tubes. The T12 tube has I.5'/ 35mm diameter and the T8 a l"/25mm diameter. The length of the fluorescent tube varies depending on power output. The maximum length of T8 and T12 fluorescent tubes is 8' / 2400 mm T8 and Ti 2 fluorescent tube light fittings use electromagnet or electronic control gear or ballasts (transformers). These components are fitted inside every fluorescent light fitting and without this component no fluorescent tube would work.

There are devices which can be used to retro fit existing T8 and T12 fluorescent light fittings so the existing light fittings can use the more efficient T5 tubes. However there are 6' /1800 mm and 8' I 2400 mm T8 and 112 that cannot be retro fitted with more efficient 15 tubes because T5 fluorescent tubes are only manufactured to a maximum of 5'/ 1500mm.

All fluorescent tubes are inefficient when compared to current LEDs (Light Emitting Diode) This invention seeks to improve the efficiency of existing TX and 112 fluorescent tubes and to overcome the problem of replacing any length T8 or T12 fluorescent tubes and their ballasts (transformers) with a more energy efficient and more environmentally friendly LED (Light Emitting Diode) Light Panel.

it is retro fit device which can be used to improve efficiency of an existing fluorescent light fitting by replacing the existing fluorescent tube light source with a more efficient LED light source and to extend the life of the existing fitting, which does not have to replaced.

The invention device is a complete, one piece assembly, light fitting complete with its own internal LED power supply and external LEDs lighting panel. It is designed to enable the complete assembly to be retro fitted and installed into an existing fluorescent light fitting for operational purposes.

The ends of the device are exactly the same shape, diameter, design as a standard 18 or 112 tube. The device has 2 metal pins which protrude out of each end of the device. These are the same design, shape and size of the 2 pins that protrude, and can be found on the end of every T8 or 112 fluorescent linear tube.

These two device pins are fixed and located on to the device in the same position as found on a 18 or 112 tubes. The complete device therefore has the same diameter at each end as the T8 or T12 tube, the same overall length of the 18 or T12 tube and the same 2 pin connectors, which it replaces.

When the existing T8 or T12 tube is removed the complete device is installed in the existing T8 or T12 light fitting in place of the removed T8 or T12 tube, in the same way as a T8 or 112 fluorescent tube would be normally replaced. The complete device therefore mimics' the same shape and approximate dimensions of the T8 or T12 tube to be replaced.

When the device has been installed in the TX or 112 light fitting the device, which is in itself a complete LED light fitting with its own internal and integral LED power supply, is ready for operation The existing ballast (transformer) fitted inside the TX or T12 light fitting is by-passed by the internal and integral LED power supply which allows this LED power supply to override the existing ballast which is made redundant.

The LED power supply in the device is connected through a metal conductivity assembly connecting LED power supply unit to the mains power supply of the T8 and TI 2 light fittings, thus allowing electrical power to the LED power supply and LED light panel. It is this power from the LED power supply which ignites and powers the externally mounted LED light panel.

The device is a complete LED light fitting, designed to enable it to replace 18 or T12 tubes that are removed from an existing TX or 112 light fitting. The actual installation of the complete device into the T8 or TI 2 fitting is a similar procedure as that of replacing a used 18 or 112 tube with a new one.

The one piece assembly device therefore allows more efficient and longer life LEDs to be used in existing 18 and T12 light fittings and thus providing an alternative to the complete removal and replacement of the existing 18 or 112 fluorescent light fittings when a more efficient, energy saving light source and a reduce Co2 emissions are required.

A preferred embodiment of the invention will now be described with reference to the accompanying drawing in which: FIGURE 1: Shows a plan view of the one piece assembly and the externally mounted LED light panel. Some LED's of the light panel are shown on this plan view.

FIGURE 2: Shows a side elevation and end view of the one piece assembly.

FIGURE 3: Shows an end view of the body of the frame of the assembly which incorporates the externally mounted LED light panel and houses the internally fitted integral LED power supply unit and power supply components.

In Figure 1 the one piece assembly includes an external LED light panel, number 2. This panel is incorporated onto the frame of the assembly. Power to the LED light panel is supplied from a integral LED Power supply, number 3, which is housed inside the frame of the assembly.

Figure 2 shows the externally mounted LED Light Panel number 2 and internally mounted LED Power supply unit number 3.

Figure 3 shows the externally mounted LED Light Panel number 2 and internally mounted LED power supply unit number 3.

Claims (4)

1) A one piece assembly light fitting device complete with its own internal LED power supply and externally fitted LED light panel designed to enable the complete assembly to be retro installed into an existing T8 or Ti
2 fluorescent light fittings to replace the existing T8 and 112 fluorescent tubes of any length and thus allowing a more efficient LED light source to be used in an existing light fitting for operational purposes 2) A one piece assembly device which houses an internally fitted LED power supply and externally fitted LED light panel and when installed in a T8 or T12 fluorescent light fitting isolates and makes redundant the existing fluorescent tube control gear required to operate the existing T8 or Ti 2 fluorescent tube and supplies mains power to the internal LED power supply frequency to enable the operation of the externally fitted LED light panel, which replaces the existing fluorescent tubes as the light source.
3) A one piece assembly device which enables a LED light panel to be fixed in an existing T8 or 112 fluorescent 11gM fittings for operational purposes, thus eliminating the need to replace, remove and dispose of the existing T8 or T12 light fitting which will be re-used to house the one piece assembly LED light panel device.
4) A one piece assembly device which as part of its internal LED power supply components includes end fitting metal conductivity assemblies connecting the internal LED power supply to existing, installed 18 or T12 fitting, thus allowing incoming mains electrical power to the existing 18 or 112 fluorescent fitting to be used the LED power supply which in turn powers the LED light panel fitted externally and part of the one piece the assembly device.
GB0704157A 2007-03-03 2007-03-03 Light emitting diode replacement lamp for fluorescent light fittings Withdrawn GB2447257A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0704157A GB2447257A (en) 2007-03-03 2007-03-03 Light emitting diode replacement lamp for fluorescent light fittings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0704157A GB2447257A (en) 2007-03-03 2007-03-03 Light emitting diode replacement lamp for fluorescent light fittings

Publications (2)

Publication Number Publication Date
GB0704157D0 GB0704157D0 (en) 2007-04-11
GB2447257A true GB2447257A (en) 2008-09-10

Family

ID=37965881

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0704157A Withdrawn GB2447257A (en) 2007-03-03 2007-03-03 Light emitting diode replacement lamp for fluorescent light fittings

Country Status (1)

Country Link
GB (1) GB2447257A (en)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2009101044B4 (en) * 2009-10-09 2009-12-03 Enlighten Australia Pty Ltd System and Method of Retrofitting Fluorescent Light Fixtures and LED Tube Lights Therefor
WO2010047972A2 (en) 2008-10-24 2010-04-29 Altair Engineering, Inc. Integration of led lighting with building controls
US8807785B2 (en) 2008-05-23 2014-08-19 Ilumisys, Inc. Electric shock resistant L.E.D. based light
US8840282B2 (en) 2010-03-26 2014-09-23 Ilumisys, Inc. LED bulb with internal heat dissipating structures
US8894430B2 (en) 2010-10-29 2014-11-25 Ilumisys, Inc. Mechanisms for reducing risk of shock during installation of light tube
US8901823B2 (en) 2008-10-24 2014-12-02 Ilumisys, Inc. Light and light sensor
US8928025B2 (en) 2007-12-20 2015-01-06 Ilumisys, Inc. LED lighting apparatus with swivel connection
US8946996B2 (en) 2008-10-24 2015-02-03 Ilumisys, Inc. Light and light sensor
US9013119B2 (en) 2010-03-26 2015-04-21 Ilumisys, Inc. LED light with thermoelectric generator
US9072171B2 (en) 2011-08-24 2015-06-30 Ilumisys, Inc. Circuit board mount for LED light
US9163794B2 (en) 2012-07-06 2015-10-20 Ilumisys, Inc. Power supply assembly for LED-based light tube
US9184518B2 (en) 2012-03-02 2015-11-10 Ilumisys, Inc. Electrical connector header for an LED-based light
US9267650B2 (en) 2013-10-09 2016-02-23 Ilumisys, Inc. Lens for an LED-based light
US9271367B2 (en) 2012-07-09 2016-02-23 Ilumisys, Inc. System and method for controlling operation of an LED-based light
US9285084B2 (en) 2013-03-14 2016-03-15 Ilumisys, Inc. Diffusers for LED-based lights
US9353939B2 (en) 2008-10-24 2016-05-31 iLumisys, Inc Lighting including integral communication apparatus
US9441795B2 (en) 2013-09-25 2016-09-13 Silicon Hill B.V. LED lamp with ballast detection and method thereof
US9510400B2 (en) 2014-05-13 2016-11-29 Ilumisys, Inc. User input systems for an LED-based light
US9574717B2 (en) 2014-01-22 2017-02-21 Ilumisys, Inc. LED-based light with addressed LEDs
US9832837B2 (en) 2015-03-26 2017-11-28 Silicon Hill B.V. LED lighting system
US10161568B2 (en) 2015-06-01 2018-12-25 Ilumisys, Inc. LED-based light with canted outer walls
US10176689B2 (en) 2008-10-24 2019-01-08 Ilumisys, Inc. Integration of led lighting control with emergency notification systems
US10342086B2 (en) 2017-01-17 2019-07-02 Ilumisys, Inc. Integration of LED lighting with building controls

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020060526A1 (en) * 2000-02-11 2002-05-23 Jos Timmermans Light tube and power supply circuit
US20030102810A1 (en) * 2001-11-30 2003-06-05 Mule Lighting, Inc. Retrofit light emitting diode tube
WO2004097291A1 (en) * 2003-05-01 2004-11-11 Allan Krogh Jensen A tubular led light source
JP2004335426A (en) * 2003-04-30 2004-11-25 Shingo Kizai Kk Fluorescent lamp conversion type light emitting diode lamp
WO2006086927A1 (en) * 2005-02-21 2006-08-24 Sze Keun Chan Led lighting lamp tube
US20060193131A1 (en) * 2005-02-28 2006-08-31 Mcgrath William R Circuit devices which include light emitting diodes, assemblies which include such circuit devices, and methods for directly replacing fluorescent tubes
GB2427762A (en) * 2005-06-15 2007-01-03 Hartland Electronics Ltd Elongate arrays of LEDs
WO2007092003A1 (en) * 2006-02-07 2007-08-16 Denovo Lighting, L.L.C. Power controls for tube mounted leds with ballast
WO2007120501A2 (en) * 2006-04-05 2007-10-25 Leotek Electronics Corporation Retrofitting of fluorescent tubes with light-emitting diode (led) modules for various signs and lighting applications
WO2007143991A1 (en) * 2006-06-12 2007-12-21 Akj Inventions V/Allan Krogh Jensen A tubular led light source

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020060526A1 (en) * 2000-02-11 2002-05-23 Jos Timmermans Light tube and power supply circuit
US20030102810A1 (en) * 2001-11-30 2003-06-05 Mule Lighting, Inc. Retrofit light emitting diode tube
JP2004335426A (en) * 2003-04-30 2004-11-25 Shingo Kizai Kk Fluorescent lamp conversion type light emitting diode lamp
WO2004097291A1 (en) * 2003-05-01 2004-11-11 Allan Krogh Jensen A tubular led light source
WO2006086927A1 (en) * 2005-02-21 2006-08-24 Sze Keun Chan Led lighting lamp tube
US20060193131A1 (en) * 2005-02-28 2006-08-31 Mcgrath William R Circuit devices which include light emitting diodes, assemblies which include such circuit devices, and methods for directly replacing fluorescent tubes
GB2427762A (en) * 2005-06-15 2007-01-03 Hartland Electronics Ltd Elongate arrays of LEDs
WO2007092003A1 (en) * 2006-02-07 2007-08-16 Denovo Lighting, L.L.C. Power controls for tube mounted leds with ballast
WO2007120501A2 (en) * 2006-04-05 2007-10-25 Leotek Electronics Corporation Retrofitting of fluorescent tubes with light-emitting diode (led) modules for various signs and lighting applications
WO2007143991A1 (en) * 2006-06-12 2007-12-21 Akj Inventions V/Allan Krogh Jensen A tubular led light source

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8928025B2 (en) 2007-12-20 2015-01-06 Ilumisys, Inc. LED lighting apparatus with swivel connection
US8807785B2 (en) 2008-05-23 2014-08-19 Ilumisys, Inc. Electric shock resistant L.E.D. based light
US10182480B2 (en) 2008-10-24 2019-01-15 Ilumisys, Inc. Light and light sensor
EP2351465A4 (en) * 2008-10-24 2012-03-28 Altair Eng Inc Integration of led lighting with building controls
US8214084B2 (en) 2008-10-24 2012-07-03 Ilumisys, Inc. Integration of LED lighting with building controls
US10036549B2 (en) 2008-10-24 2018-07-31 Ilumisys, Inc. Lighting including integral communication apparatus
EP2351465A2 (en) * 2008-10-24 2011-08-03 Altair Engineering, Inc. Integration of led lighting with building controls
US9398661B2 (en) 2008-10-24 2016-07-19 Ilumisys, Inc. Light and light sensor
US9353939B2 (en) 2008-10-24 2016-05-31 iLumisys, Inc Lighting including integral communication apparatus
US8901823B2 (en) 2008-10-24 2014-12-02 Ilumisys, Inc. Light and light sensor
WO2010047972A2 (en) 2008-10-24 2010-04-29 Altair Engineering, Inc. Integration of led lighting with building controls
US8946996B2 (en) 2008-10-24 2015-02-03 Ilumisys, Inc. Light and light sensor
US10176689B2 (en) 2008-10-24 2019-01-08 Ilumisys, Inc. Integration of led lighting control with emergency notification systems
US9585216B2 (en) 2008-10-24 2017-02-28 Ilumisys, Inc. Integration of LED lighting with building controls
US9101026B2 (en) 2008-10-24 2015-08-04 Ilumisys, Inc. Integration of LED lighting with building controls
US9635727B2 (en) 2008-10-24 2017-04-25 Ilumisys, Inc. Light and light sensor
AU2009101044C4 (en) * 2009-10-09 2012-09-27 Enlighten Australia Pty Ltd System and Method of Retrofitting Fluorescent Light Fixtures and LED Tube Lights Therefor
AU2009101044B4 (en) * 2009-10-09 2009-12-03 Enlighten Australia Pty Ltd System and Method of Retrofitting Fluorescent Light Fixtures and LED Tube Lights Therefor
US9395075B2 (en) 2010-03-26 2016-07-19 Ilumisys, Inc. LED bulb for incandescent bulb replacement with internal heat dissipating structures
US9013119B2 (en) 2010-03-26 2015-04-21 Ilumisys, Inc. LED light with thermoelectric generator
US8840282B2 (en) 2010-03-26 2014-09-23 Ilumisys, Inc. LED bulb with internal heat dissipating structures
US8894430B2 (en) 2010-10-29 2014-11-25 Ilumisys, Inc. Mechanisms for reducing risk of shock during installation of light tube
US9072171B2 (en) 2011-08-24 2015-06-30 Ilumisys, Inc. Circuit board mount for LED light
US9184518B2 (en) 2012-03-02 2015-11-10 Ilumisys, Inc. Electrical connector header for an LED-based light
US9163794B2 (en) 2012-07-06 2015-10-20 Ilumisys, Inc. Power supply assembly for LED-based light tube
US9807842B2 (en) 2012-07-09 2017-10-31 Ilumisys, Inc. System and method for controlling operation of an LED-based light
US9271367B2 (en) 2012-07-09 2016-02-23 Ilumisys, Inc. System and method for controlling operation of an LED-based light
US9285084B2 (en) 2013-03-14 2016-03-15 Ilumisys, Inc. Diffusers for LED-based lights
US9441795B2 (en) 2013-09-25 2016-09-13 Silicon Hill B.V. LED lamp with ballast detection and method thereof
US9267650B2 (en) 2013-10-09 2016-02-23 Ilumisys, Inc. Lens for an LED-based light
US10260686B2 (en) 2014-01-22 2019-04-16 Ilumisys, Inc. LED-based light with addressed LEDs
US9574717B2 (en) 2014-01-22 2017-02-21 Ilumisys, Inc. LED-based light with addressed LEDs
US9510400B2 (en) 2014-05-13 2016-11-29 Ilumisys, Inc. User input systems for an LED-based light
US10136486B2 (en) 2015-03-26 2018-11-20 Silicon Hill B.V. LED lighting system
US9832837B2 (en) 2015-03-26 2017-11-28 Silicon Hill B.V. LED lighting system
US10161568B2 (en) 2015-06-01 2018-12-25 Ilumisys, Inc. LED-based light with canted outer walls
US10342086B2 (en) 2017-01-17 2019-07-02 Ilumisys, Inc. Integration of LED lighting with building controls

Also Published As

Publication number Publication date
GB0704157D0 (en) 2007-04-11

Similar Documents

Publication Publication Date Title
US7585090B2 (en) Light-emitting-diode lamp
US9970601B2 (en) Light tube and power supply circuit
US7228052B1 (en) LED light pipe structure
KR100927851B1 (en) Tube type led lighting device
US9587815B2 (en) End cap for a tubular light source
US20090046457A1 (en) Solid-state lighting fixtures
JP3145179U (en) led lamp tube can exchange the power supply is
EP2172687A1 (en) High-power led lamp for street lighting
EP2239493A3 (en) Energy-saving lighting fixture
EP2440017A3 (en) Lighting Systems
US20100265732A1 (en) Light tube with led light source
NZ546577A (en) Linear fluorescent high-bay
USD614323S1 (en) LED light
JP2011018644A (en) Light-emitting diode-lighting system and current control method of the same
TW200905119A (en) Illumination system
CA2342321A1 (en) Preferred embodiment to led light string
GB2474158A (en) Fluorescent tube replacement having logitudinally oriented LEDs
EP2146133A3 (en) Tubular blue LED lamp with remote phosphor
SG159468A1 (en) Light emitting diode lamp tube
EP2469984A3 (en) Light emitting diode retrofit system for fluorescent lighting systems
EP2320711A3 (en) LED lighting device and illuminating device
WO2012009260A3 (en) Circuit board mount for led light tube
CA2495809A1 (en) Fluorescent lamp tube
KR100821975B1 (en) Led lamp usable fluorescent socket with the ballast
RU2013142062A (en) Lighting power generator that is compatible with electromagnetic ballast, lamp-based light-emitting diodes

Legal Events

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