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WO2013008030A1 - Module de lampe à del - Google Patents

Module de lampe à del Download PDF

Info

Publication number
WO2013008030A1
WO2013008030A1 PCT/GB2012/051669 GB2012051669W WO2013008030A1 WO 2013008030 A1 WO2013008030 A1 WO 2013008030A1 GB 2012051669 W GB2012051669 W GB 2012051669W WO 2013008030 A1 WO2013008030 A1 WO 2013008030A1
Authority
WO
WIPO (PCT)
Prior art keywords
lamp unit
led lamp
power source
electrical
led
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.)
Ceased
Application number
PCT/GB2012/051669
Other languages
English (en)
Inventor
Andrew Johnson
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.)
Aurora Ltd
Original Assignee
Aurora Ltd
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 Aurora Ltd filed Critical Aurora Ltd
Priority to EP12740644.5A priority Critical patent/EP2732200A1/fr
Priority to CN201280043004.7A priority patent/CN103958961A/zh
Priority to AU2012282258A priority patent/AU2012282258A1/en
Publication of WO2013008030A1 publication Critical patent/WO2013008030A1/fr
Priority to ZA2014/00096A priority patent/ZA201400096B/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-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
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/27—Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
    • F21S9/02—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
    • F21S9/022—Emergency lighting devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
    • F21S9/02—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • F21V23/007—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array enclosed in a casing
    • F21V23/009—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array enclosed in a casing the casing being inside the housing of the lighting device
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
    • F21V23/0457—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor sensing the operating status of the lighting device, e.g. to detect failure of a light source or to provide feedback to the device
    • 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
    • F21V27/00—Cable-stowing arrangements structurally associated with lighting devices, e.g. reels 
    • F21V27/02—Cable inlets
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • 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 present invention relates to LED lamp units. It is particularly applicable, but in no way limited, to tubular LED lamp units which are capable of providing both normal and emergency lighting.
  • LED (light emitting diodes) lamp units including LED tubes which can replace conventional fluorescent lamps, are becoming increasingly widely used.
  • LED tube lamps have advantages over conventional lamps because of the properties of LEDs. These properties include low power consumption, long lifespan, rapid start-up and directional ability.
  • new commercial and industrial buildings are usually fitted out with LED lamps, including LED tube lamps and existing commercial and industrial buildings are being retro-fitted with these types of lamp over time.
  • Emergency lights to aid escape from a building in an emergency must be provided in commercial and industrial buildings, as well as in other locations, and special emergency LED lights have been designed for that purpose. These emergency lights are generally of two main types. So-called “non-maintained” emergency lights illuminate only when the normal mains electricity supply fails. So-called “maintained” emergency lights function as a conventional light when the normal mains electrical supply is on, and also function as an emergency light when the normal mains electricity supply fails.
  • One inherent disadvantage is that the battery only charges when the unit is switched on and AC mains electricity is flowing. If the lamp unit is located in an area that is occupied infrequently, and therefore the lights are switched on infrequently, or is in an area that has the benefit of good natural light and the lights are therefore rarely required during normal building occupancy, then the battery will not be charged. This would result in the emergency light failing to function in the event of an AC mains supply failure. It is an object of the present invention to overcome or at least mitigate some or all of these disadvantages.
  • an LED lamp unit adapted to engage with, and receive electrical power from, an LED lamp unit holder, said LED lamp unit comprising:- one or more LEDs;
  • a first electrical connecting means adapted to connect the LED lamp unit to a first electrical power source in the lamp holder
  • a second electrical connecting means adapted to connect the LED lamp unit to a second electrical power source adapted to charge the rechargeable power source.
  • the first electrical power source comprises a switched power source. This corresponds to the conventional switched power source used to turn the LED lamp unit on and off in normal operation.
  • the second electrical power source comprises a permanent, unswitched power source.
  • Permanent electrical supplies are provided in commercial and industrial premises.
  • the first electrical power source comprises an alternating current power source
  • the second electrical power source comprises an alternating current power source.
  • the LED lamp unit further includes a housing.
  • This housing houses the LED array(s), the LED drivers and associated circuitry, any heat sinks and optionally the rechargeable power source and associated charging circuitry.
  • the first and second electrical connecting means extend from the housing.
  • the rechargeable power supply is located outside the housing and remote from the other components of the LED lamp unit.
  • the housing comprises a hollow tubular body wherein at least part of the tubular body is light penetrable. Since LEDs are directional, only that part of the tubular body facing into the space to be illuminated needs to be light penetrable.
  • the unit further comprises a photoelectric component.
  • the photoelectric component functions as a switch between the first electrical power source and the LEDs.
  • the photoelectric component acts as a switch between the rechargeable power source and the LEDs.
  • the photoelectric component may be replaced by or augmented with a passive infrared sensor (PIR sensor) or a microwave sensor. Both these types of sensor are capable of detecting the presence of a human or animal body in the space covered by the sensor.
  • PIR sensor passive infrared sensor
  • microwave sensor a microwave sensor
  • the second electrical connecting means comprises an electrical cable, attached at one end to circuitry in the housing and optionally with an electrical connector on the end of the cable remote from the LED lamp unit.
  • This cable can be used to connect the LED lamp unit either directly or indirectly to a secure power supply.
  • the electrical cable passes through the body of the housing.
  • the cable can pass through that part of the housing which is not light penetrable, and thus exits the housing on the side of the lamp unit away from normal view.
  • the LED lamp unit further comprises circuitry adapted to cause the LED array to operate at less than normal operating brightness when power is provided by the rechargeable power source. Because the light output requirements for normal lighting and emergency lighting are different, the emergency lighting requirement being for less light than normal lighting, this arrangement enables the rechargeable power source to last longer than if it was required to power all of the LEDs at full illumination.
  • the unit comprises a plurality of LEDs in an array.
  • the LED lamp unit further comprises circuitry adapted to cause only part of the LED array to operate when power is provided by the rechargeable power source.
  • the unit further comprises a switch adapted to disconnect the rechargeable power source from the LED array when required, such as during transit of the unit.
  • the present invention therefore encompasses an LED lamp unit having a rechargeable power source and connections to two external power sources.
  • One of the external power sources is the usual switched supply, and the other is a permanent supply. This means that no special lamp holder is required to create a maintained emergency light and that a secure power supply can be supplied to charge the rechargeable energy source, even when the LED lamp unit is switched off.
  • FIGS 1 and 2 illustrate typical wiring diagrams for LED lamp units according to the present invention for luminaires with electronic ballasts or with magnetic ballasts respectively;
  • Figure 3 illustrates a perspective view of an LED lamp unit according to the present invention
  • Figure 4 illustrates by way of an exploded diagram how the components of an LED lamp unit according to the present invention are accommodated within a tubular housing;
  • Figure 5 illustrates by way of an exploded diagram a variation of the embodiment shown in Figure 4 in which the rechargeable battery is located outside rather than accommodated within a tubular housing. Description of the preferred embodiments
  • FIG. 1 shows in diagrammatic format an LED lamp unit 100 having a tubular shape and adapted to engage with an LED lamp unit holder having fittings 1 16 at each end of the lamp holder.
  • the LED lamp unit 100 has at one end of the tube a pair of pins 1 12, and these pins 1 12 engage with a fitting 1 16A of the LED lamp unit holder both to retain the LED lamp unit 100 in place in the lamp holder, and to form an electrical connection with the lamp holder.
  • the LED lamp unit 100 has at the other end of the tube, opposite to pins 1 12, a pair of pins 1 14, being adapted to engage with a fitting 1 16B of the LED lamp unit holder to retain the LED lamp unit 100 in place in the lamp holder.
  • the pins 1 14 are connected together within the lamp unit by an electrical bridging wire 1 19 in order to complete the electrical circuit from the live side of power source 1 18 through lamp holder 1 16A, lamp holder 1 16B and back to the neutral side of power source 1 18.
  • Pins 1 12 and 1 14 in combination constitute a first electrical connecting means.
  • the LED lamp holder 1 16 is supplied from a first electrical power source 1 18, typically alternating current (AC) mains power.
  • a first electrical power source 1 18, typically alternating current (AC) mains power typically alternating current (AC) mains power.
  • the LED lamp unit will run off alternating current, but it is equally possible to use direct current if that is required.
  • the LED lamp unit 100 includes an LED driver 104, which is electrically connected to the pair of pins 1 12 in order to receive electrical power from the lamp unit holder, and to one or more LEDs 102.
  • LED driver 104 When the LED lamp unit 100 is engaged with the LED lamp holder, and the first electrical power source 1 18 is switched on, current supplied to LED driver 104 via the pair of pins 1 12 and the fittings 1 16 is typically converted into direct current (DC), which is supplied to one or more LEDs 102.
  • DC direct current
  • the lamp unit 100 also includes a charging circuit 108 and a rechargeable power source in the form of a battery 106.
  • the charging circuit is electrically connected by way of a second electrical connecting means to a second power source 120 by way of terminals 1 10.
  • the charging circuit 108 is also connected to the rechargeable power source 106 and to one or more LEDs 102.
  • Stored electrical power from the rechargeable power source 106 can be supplied to one or more LEDs 102 via charging circuit 108 in the event of a power failure.
  • the rechargeable power source 106 can be a battery, or some other device such as a capacitor or a fuel cell.
  • any conventional lamp holder may be converted into a maintained emergency light fitting.
  • the LED lamp unit 100 is fitted into the lamp holder the LED lamp unit is connected via the pins 1 12 to a first electrical power source provided by the lamp holder.
  • terminals 1 10 are electrically connected to second electrical power source 120, which is typically a permanent, or "always on", electrical power source.
  • This second electrical power source 120 is utilised by the charging circuit to charge, or maintain the charge of, the rechargeable power source 106.
  • the rechargeable power source 106 is thus maintained in a charged state, regardless of whether the first electrical power source 1 18 is on or off.
  • first electrical power source 1 18 is on, one or more LEDs 102 emit light for providing illumination in a conventional manner as described above.
  • first electrical power source 1 18 When first electrical power source 1 18 is off, current is no longer supplied to one or more LEDs 102 via LED driver 104.
  • the charging circuit 108 is adapted to detect the status of the power supply to the second electrical connecting means 1 10.
  • the first electrical power source 1 18 when power is supplied to the connecting means 1 10, the first electrical power source 1 18 causes one or more LEDs 102 to operate normally as required and no power is supplied to the LEDs by the rechargeable power source 106.
  • power from the rechargeable power source 106 is supplied to one or more LEDs 102 in order to provide emergency light.
  • Table 1 Table 1
  • circuitry is provided such that when the lamp unit is functioning as an emergency light the LED array is illuminated at less than normal operating brightness. This conserves the operational life of the rechargeable power source in an emergency power situation.
  • the charging circuit 108 may supply a lower current from the rechargeable power source 106 to one or more LEDs 102 than is supplied by the LED driver 104 in normal operation, leading to a lower level of illumination and thus conserving the rechargeable power source 106.
  • circuitry is provided such that when the lamp unit is functioning as an emergency light only part of the LED array is illuminated. This also conserves the rechargeable power source.
  • the LED array may be divided in to two or more LED arrays. The division of LED arrays into sub arrays is known, and this technology finds useful application in this invention.
  • a photoelectric component is provided (not shown) which can act as a switch to turn off the LED array in the event that there is sufficient light in the vicinity of the lamp unit such that artificial illumination is not required.
  • This light operated switch can operate on the LED array when the unit is in normal operation, or when the unit is operating as an emergency light, or both.
  • photoelectric cells and the associated circuitry to create a light operated switch are well known and can usefully be employed in the present invention.
  • a passive infrared sensor or a microwave sensor can be incorporated into the LED lamp unit. Both of these types of sensor are known and are capable of detecting the presence of a human or animal body in the space covered by the sensor. These sensors are therefore capable of turning the light or lights off when the area is unoccupied and turning it on when the area is occupied. These sensors are known, as is the associated circuitry to create a motion or body activated switch, and can usefully be employed in the present invention.
  • FIG. 2 illustrates a similar lamp unit to that illustrated in Figure 1 and an equivalent numbering system to that in Figure 1 has been used.
  • the lamp holder includes a magnetic ballast and if the lamp holder was designed to accept fluorescent tubes then it is necessary to replace the fluorescent starter with an LED starter/fuse unit. Otherwise the components and operation of the arrangement shown in Figure 2 are the same as for those shown in Figure 1 .
  • Figure 3 illustrates the typical appearance of an LED lamp unit 300 according to the present invention.
  • This takes the form of a tube 301 , the front part of which is transparent or translucent to visible light.
  • the back part of the tube 303 is not necessarily transparent to visible light and is preferably not transparent as it can be used to hide the electronic circuitry required to make the lamp unit function, and that is shown in more detail in Figure 4.
  • Connector pins 312 and 314 in end caps located at opposite ends of the tube serve to engage with, and form an electrical connection with, a lamp holder which may be of a conventional type.
  • the tube 301 and the connector pin end caps form, in combination, a housing for the LED lamp unit.
  • a second electrical connecting means in the form of a two core electrical cable 31 1 , extends from the rear or back part of the tube 303, being the part of the tube which is generally not light transparent.
  • the connecting means 31 1 remains substantially invisible to anyone standing in the room and when viewed from beneath the lamp unit. It is preferred to use a two core cable but it is equally possible to use two separate cables.
  • an on/off switch 400 shown in more detail as item 18 in Figure 4.
  • This switch can be used to disconnect the rechargeable battery from the circuit. This facility would be used, for example, when the unit is in transit. It is anticipated that the unit will be manufactured and tested with a charged, or partially charged battery. However, without this switch, when the unit is disconnected from the test mains supply and packed into its box for transit, the LED lighting array 102 would automatically come on and the battery will become fully discharged in a matter of hours. This is undesirable and can be prevented by switching the switch 400/18 to the "OFF" position, while the battery is still in a charged or partially charged state.
  • the LEDs are no longer powered by the battery and the LED array will no longer come on when the unit is disconnected from the mains electricity supply.
  • the unit will therefore arrive at its destination with the rechargeable battery still in a charged or partially charged state.
  • the installer simply moves the switch to the "ON" position and the unit functions normally as an emergency light.
  • the switch can be located in any suitable location. It is preferred that the switch is located away from the transparent/translucent part of the fitting through which light is emitted. That is to say, it is preferred if the switch 18 is located on the non- transparent part or rear of the LED lamp unit, which is not visible when the lamp unit is in its installed position in an LED lamp unit holder. It is also preferred that the switch is located in a position such that it does not interfere with any part of the lamp holder or with any starter/fuse or other items that project from the LED lamp unit holder, as shown by item 18 in Figure 4.
  • Figure 4 illustrates in exploded view format the components used in the construction of an LED lamp unit according to the present invention.
  • a key to the components in Figure 4 is shown in Table 2 below.
  • An indicator means which provides a visual indication of the state of the LED lamp unit, and in particular its ability to function as an emergency light, is provided by one or more coloured LEDs 500, shown in Figure 4.
  • a single green LED is incorporated into the LED array 102. This green LED is a charge indicator and illuminates when the battery charging circuit is functioning. It follows therefore that a simple visual inspection of such units, looking for the green lights, provides a simple visual check that everything is in order.
  • the size of rechargeable battery required may be too large to fit within the housing.
  • the rechargeable battery may be housed or located outside of the housing, and remote from the other components of the LED lamp unit.
  • This type of arrangement is shown in Figure 5.
  • the same numbering system is used in Figure 5 as that used in Figure 4 (see Table 2).
  • Lead 19, consisting of a live and neutral lead in combination, extends out of the housing, preferably through the same cord grip 17 used to grip the second electrical power source lead for connection to a secure supply.
  • a remote rechargeable battery pack (not shown), connected to the other components inside the housing by lead 19 which forms a third electrical connecting means, can be located out of sight for example above the ceiling in the ceiling void above the lamp unit.
  • the rechargeable battery pack is preferably connected to lead 19 by means of a suitable connector, such as an AMP (RTM) connector. This enables the battery pack to be changed quickly and easily should this is required.
  • RTM AMP

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

L'invention concerne un module de lampe à DEL (100) conçu pour se connecter à un support de module de lampe à DEL et recevoir de l'énergie électrique de celui-ci, ledit module de lampe à DEL (100) comprenant : une ou plusieurs DEL (102); une source d'énergie rechargeable (106); un premier moyen de connexion électrique (112) conçu pour connecter le module de lampe à DEL (110) à une première source d'énergie électrique (118) dans le support de lampe; un second moyen de connexion électrique (110) conçu pour connecter le module de lampe à DEL (100) à une seconde source d'énergie électrique (120) adaptée pour charger la source d'énergie rechargeable (118). La source d'énergie rechargeable (118) peut être située à distance des autres composants du module de lampe, comme dans une cavité de plafond.
PCT/GB2012/051669 2011-07-13 2012-07-13 Module de lampe à del Ceased WO2013008030A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP12740644.5A EP2732200A1 (fr) 2011-07-13 2012-07-13 Module de lampe à del
CN201280043004.7A CN103958961A (zh) 2011-07-13 2012-07-13 Led灯装置
AU2012282258A AU2012282258A1 (en) 2011-07-13 2012-07-13 An LED lamp unit
ZA2014/00096A ZA201400096B (en) 2011-07-13 2014-01-07 An led lamp unit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1112034.2 2011-07-13
GB1112034.2A GB2488845B (en) 2011-07-13 2011-07-13 An LED lamp unit

Publications (1)

Publication Number Publication Date
WO2013008030A1 true WO2013008030A1 (fr) 2013-01-17

Family

ID=44586526

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2012/051669 Ceased WO2013008030A1 (fr) 2011-07-13 2012-07-13 Module de lampe à del

Country Status (6)

Country Link
EP (1) EP2732200A1 (fr)
CN (1) CN103958961A (fr)
AU (1) AU2012282258A1 (fr)
GB (1) GB2488845B (fr)
WO (1) WO2013008030A1 (fr)
ZA (1) ZA201400096B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9791117B2 (en) 2013-04-02 2017-10-17 Thomas & Betts International Llc Emergency lighting fixture with remote control

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GB2536300B (en) * 2015-03-12 2021-03-10 Tridonic Gmbh & Co Kg Integrated light source module and housing therefore
US10222006B2 (en) 2016-03-15 2019-03-05 Energy Focus, Inc. Tubular lamp and lamp socket with power pin connector and signal pin connector
US10236716B2 (en) 2016-04-22 2019-03-19 Energy Focus, Inc. Lamp with battery backup capability
US10892615B2 (en) 2017-04-25 2021-01-12 Energy Focus, Inc. Circuit for mitigating electric shock

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US6505950B1 (en) * 2000-11-17 2003-01-14 Dale C. Natoli Lighted newel post
DE202004012513U1 (de) * 2004-08-10 2004-12-16 Chang, Tsu-Kang Weiße Lampenbaueinheit, die eine LED als Lichtquelle verwendet
US20060072306A1 (en) * 2004-10-05 2006-04-06 Woodyard Joe E Spotlight system and method
US20080304272A1 (en) * 2007-06-11 2008-12-11 Mickael Collins Joasil Light bulb system
US20110084554A1 (en) 2009-10-13 2011-04-14 Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. Led lamp

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US6966669B2 (en) * 2003-03-10 2005-11-22 Rally Manufacturing, Inc. Utility light
CN2684515Y (zh) * 2004-03-26 2005-03-09 郭兆东 具有紧急照明功能之照明器具
CN100549502C (zh) * 2007-09-21 2009-10-14 陈志雄 一种两用智能灯
CN101446400A (zh) * 2008-12-26 2009-06-03 深圳市稀路电器有限公司 一体化led应急灯
CN201661966U (zh) * 2009-11-24 2010-12-01 王文汶 照明装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6505950B1 (en) * 2000-11-17 2003-01-14 Dale C. Natoli Lighted newel post
DE202004012513U1 (de) * 2004-08-10 2004-12-16 Chang, Tsu-Kang Weiße Lampenbaueinheit, die eine LED als Lichtquelle verwendet
US20060072306A1 (en) * 2004-10-05 2006-04-06 Woodyard Joe E Spotlight system and method
US20080304272A1 (en) * 2007-06-11 2008-12-11 Mickael Collins Joasil Light bulb system
US20110084554A1 (en) 2009-10-13 2011-04-14 Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. Led lamp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9791117B2 (en) 2013-04-02 2017-10-17 Thomas & Betts International Llc Emergency lighting fixture with remote control

Also Published As

Publication number Publication date
GB201112034D0 (en) 2011-08-31
GB2488845A (en) 2012-09-12
ZA201400096B (en) 2015-03-25
AU2012282258A1 (en) 2014-01-23
CN103958961A (zh) 2014-07-30
EP2732200A1 (fr) 2014-05-21
GB2488845B (en) 2013-06-05

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