US20190157902A1 - Lamp with battery backup capability - Google Patents
Lamp with battery backup capability Download PDFInfo
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- US20190157902A1 US20190157902A1 US16/256,258 US201916256258A US2019157902A1 US 20190157902 A1 US20190157902 A1 US 20190157902A1 US 201916256258 A US201916256258 A US 201916256258A US 2019157902 A1 US2019157902 A1 US 2019157902A1
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- lamp
- base
- mains
- pair
- emergency
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
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- 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
- 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
- F21K9/275—Details of bases or housings, i.e. the parts between the light-generating element and the end caps; Arrangement of components within bases or housings
-
- 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
- F21K9/278—Arrangement or mounting of circuit elements integrated in the light source
-
- 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
- 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
- F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
- H02J9/065—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads for lighting purposes
-
- H05B33/0803—
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- H05B33/0842—
-
- 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]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Definitions
- AC mains Traditional electrical power supplied by the utility company is occasionally unavailable because of power outages. Power outages may be due to local disruptions because of building emergencies or more widespread outages due to grid overloading. Thus, it is desirable to have backup lighting. This backup lighting can be used to provide building occupants sufficient light to allow egress from the building until the AC mains is restored.
- a variety of techniques can be used to supply backup lighting.
- the known techniques are either overly complicated, thereby increasing equipment and installation costs and/or do not meet building code requirements. Further, the known techniques may not be aesthetically pleasing or elegant. Thus, there is room for improvement.
- the lamp includes a first pair of primary electrical contacts configured to be electrically connected to a AC mains, a second pair of primary electrical contacts configured to be electrically connected to a non-switched emergency mains, and a battery charge controller in electrical communication with the second pair of electrical contacts.
- the lamp also includes a battery pack in electrical communication with the battery charge controller, an AC mains driver electrically connected to the first pair of primary electrical contacts, an emergency driver electrically connected to the battery pack, and an LED array in electrical communication with the AC mains driver and the emergency driver.
- a method of operating a TLED lamp includes the step of positioning the TLED lamp such that a first base of the TLED lamp is electrically and mechanically connected to a first lampholder and a second base of the TLED lamp is electrically and mechanically connected to a second lampholder.
- the first lampholder is electrically connected to a switched electrical mains and the second lampholder is electrically connected to a non-switched electrical mains.
- the method also includes the step of sensing a presence and an absence of electrical power supplied to the second base, charging a battery pack of the TLED lamp with the electrical power supplied to the second base, illuminating an LED array of the TLED lamp with electrical power supplied to the first base when the presence of the electrical power at the second base is sensed, and illuminating the LED array of the TLED lamp with electrical power from the battery when the absence of the electrical power at the second base is sensed.
- the TLED lamp includes a housing, an LED array disposed within the housing, a first base disposed at a first end of the housing, and a second base disposed at a second end of the housing. The first end and the second end are at opposite ends of the housing. The first base and the second base are electrically isolated from one another.
- the TLED lamp also includes an AC mains driver disposed within the housing and in electrical communication with the first base.
- the AC mains driver receives electrical power from an AC mains.
- the TLED lamp also includes a battery charge controller disposed within the housing and in electrical communication with the second base.
- the battery charge controller receives electrical power from an emergency mains.
- the TLED lamp also includes a battery pack disposed within the housing and in electrical communication with the battery charge controller. The battery pack is charged by the battery charge controller.
- the TLED lamp further includes an emergency driver disposed within the housing and in electrical communication with the battery pack, and a microcontroller disposed within the housing that senses a presence and an absence of power from the second base.
- the microcontroller instructs the AC mains driver to supply power to the LED array when power is present at the second base and supply power from the battery pack to the LED array when power is absent from the second base.
- FIG. 1 is a front elevation view of a lamp
- FIG. 2 is a perspective view of the lamp
- FIG. 3 is an electrical schematic of the lamp
- FIGS. 4A-48 are schematic views of the lamp in an installed state.
- FIG. 5 is a flowchart illustrating a method of operating a TLED lamp.
- a lamp 10 , 10 ′ with battery backup capability is depicted.
- like elements will use like reference numbers throughout the disclosure. Where there are pertinent differences, the elements will be identified with an apostrophe appended to the reference number.
- the lamp 10 , 10 is designed to operate in a normal mode (i.e., power being supplied from an emergency mains 12 ) and, alternatively, in an emergency mode (i.e., power not being supplied from the emergency mains 12 ).
- the emergency mains 12 would not be a switched supply.
- the lamp 10 , 10 ′ outputs light sufficient to comply with regulatory requirements for lighting, In most situations, the power supplied from the AC mains 14 passes through the wall switch 15 (i.e., is a switched mains). However, it is envisioned that there may be limited situations where the AC mains is not switched (i.e., electrical power is always supplied to the lamp 10 , 10 ′ without input from an end user). These limited situations may include some schools, offices, and hospitals to prevent deep darkness that could result in a dangerous environment.
- the lamp 10 , 10 ′ can be a TLED (tubular light emitting diode) lamp and may be of any number of lengths, without departing from the scope of this disclosure.
- the lamp 10 , 10 ′ could be two foot, four feet, or six foot in length. These lengths ensure compatibility during retrofit operations in which existing linear fluorescent lamps are replaced with the present lamp 10 , 10 ′.
- the lamp 10 may include a first, end 16 and a second end 18 that are at opposite ends of the lamp 10 .
- a first base 20 can be disposed at the first end 16 and a second base 22 can be disposed at the second end 18 .
- the first base 20 and the second base 22 can be compatible with conventional installations that accept G-13 medium bi-pin bases. It is noted that the first base 20 and the second base 22 could be replaced with any number of bases without departing from the scope of this disclosure.
- the bases 20 , 22 could be traditional G-13 medium bi-pin bases. As will be appreciated that if the second base 22 were replaced with a traditional G-13 medium bi-pin base, an alternate battery connect/disconnect type device would be utilized. Alternatively, the bases 20 , 22 could be combined into a single component (i.e., a single base).
- the lamp 10 , 10 ′ can include a first pair of primary electrical contacts 24 a, 24 b and a second pair of primary electrical contacts 26 a, 26 b.
- the first pair of primary electrical contacts 24 a, 24 b may be associated with the first base 20 and the second pair of primary electrical contacts 26 a, 26 b may be associated with the second base 22 .
- the first pair of primary electrical contacts 24 a, 24 b may be a first pair of line pins 24 a, 24 b and the second pair of primary electrical contacts 26 a, 26 b may be a second pair of line pins 26 a, 26 b.
- the term primary electrical contacts can be used interchangeably with the term line, pins without departing from the scope of the disclosure.
- the pins 24 a, 24 b, 26 a, 26 b are electrically conductive.
- the first pair of line pins 24 a, 24 b are electrically isolated from the second pair of line pins 26 a. 26 b.
- one of the first pair of line pins 24 a is spaced from the other of the first pair of line pins 24 b and pins 24 a, 24 b are generally parallel to one another.
- one of the second pair of line pins 26 a is spaced from the other of the second pair of line pins 26 b and the pins 26 a, 26 b are generally parallel to one another.
- the first base 20 can also include a first base face 20 a that faces away from the second base 22 and the second base may include a second base face 22 a that faces opposite the first base face 20 a, As illustrated in the figures, the first pair of line pins 24 a, 24 b extend from the first base face 20 a in a direction away from the second base 22 . Further, the second pair of line pins 26 a, 26 b can extend from the second base face 22 a in a direction away from the first base 20 .
- the lamp 10 , 10 ′ can include a pair of first auxiliary contacts 24 c, 24 d.
- the first auxiliary contacts 24 c, 24 d can be disposed on, or associated with, the first base 20 .
- the lamp 10 , 10 ′ can also include a pair of second auxiliary contacts 26 c, 26 d.
- the second auxiliary contacts 26 c, 26 d can be disposed on, or associated with the second base 22 .
- auxiliary contacts 24 c, 24 d, 26 c, 26 d could be used for a variety of functions, including for example, dimming control or with the connection/disconnection of a battery pack 52 , 52 ′.
- the battery pack 52 may be located within the lamp 10 , as shown in FIG. 4A or the battery pack 52 ′ may be external to the lamp 10 ′, as shown in FIG. 4B .
- the auxiliary contacts 24 c, 24 d, 26 c, 26 d are shown as pins.
- the auxiliary contacts 24 c, 24 d, 26 c, 26 d could be in many different formats including, for example, recessed or flush.
- these auxiliary contacts 24 c, 24 d, 26 c, 26 d could protrude from the respective bases 20 , 22 , be recessed within the bases 20 , 22 , or structured as sockets.
- auxiliary contacts 24 c, 24 d, 26 c, 26 d do not extend from the bases 24 , 26 a sufficient distance so as to interfere with installation of the lamp 10 , 10 ′ into a pair of traditional sockets.
- the battery pack 52 , 52 ′ as will be described in more detail hereinafter, may connect with these auxiliary contacts 26 c, 26 d.
- a battery-connect element 60 can be interfaced with the auxiliary contacts to make electrical connection between the auxiliary contacts and providing connection between the battery pack 52 , 52 ′ to a battery charge controller 54 , as will be described in more detail hereinafter.
- the first base 20 may be of a first color and the second base 22 may be of a second color, where the first color is different from the second color.
- the second base 22 may be red in color, while the first base 20 could be white in color. This differentiation in color could aid in installation of the lamp 10 , 10 ′ to ensure that the lamp 10 , 10 ′ is oriented such that the first base 20 is electrically connected with and mechanically associated with the AC mains 14 and the second base 22 is electrically connected with and mechanically associated with the emergency mains 12 .
- the first pair of primary electrical contacts 24 a, 24 b are for electrical connection with AC mains contacts 28 and the second pair of primary electrical contacts 28 a, 26 b are for electrical connection with emergency mains contacts 30 .
- the emergency mains contacts 30 are in electrical communication with the emergency mains 12 and the AC mains contacts 28 are in electrical communication with the AC mains 14 .
- the emergency mains contacts 30 and the AC mains contacts 28 are shown as a first lampholder and a second lampholder, respectively.
- the first base 20 and the second base 22 can connect or interface with the contacts 28 , 30 , respectively.
- emergency mains contacts and first lampholder may be used interchangeably without departing from the scope of the disclosure.
- AC mains contacts and second lampholder may also be used interchangeably.
- the emergency mains contacts 30 and the AC mains contacts 28 could be incorporated into a single component or one general location without departing from the scope of the disclosure. It is envisioned that the first lampholder and second lampholder could be different colors from one another. It is also envisioned that the first lampholder and second lampholder could be of the first color and the second color, respectively, so as to match the color selection of the first base 20 and the second base 22 to aid in proper installation of the lamp 10 , 10 ′.
- the first base 20 and the second base 22 can be disposed at opposite ends of the lamp 10 , 10 ′ and may be identical in shape.
- the AC mains contacts 28 can be electrically connected to the AC mains 14 through the wall switch 15 and the emergency mains contacts 30 are electrically connected to the emergency mains 12 .
- an alternative system environment could be one in which the AC mains 14 does not travel through a switch.
- the emergency mains 12 is a non-switched circuit, but associated with the AC mains 14 .
- a non-switch related outage of the AC mains 14 would also result in an outage of the emergency mains 12 .
- the first base 20 and the second base 22 are designed to interface with non-shunted lampholders. Because of the shape and locations of the first base 20 and the second base 22 , compatibility with the traditional lampholders already commonly utilized is ensured.
- the emergency function of the lamp 10 , 10 ′ may be periodically tested to meet UL 924.
- UL 924 is entitled “Standard for Emergency Lighting and Power Equipment.”
- UL approval may be required for many commercial installations and a UL approved product can provide commercial viability. Further, this capability, and hence regulatory approval, is lacking with the traditional tubular LED lamps.
- a housing 32 can extend between the first base 20 and the second base 22 .
- the housing 32 may include a frame 34 and a lens 36 that cooperate to define a housing cavity 38 .
- the frame 34 can have a U-shaped cross-section. It is envisioned that the frame 34 could be made of any number of materials that would be of sufficient strength and rigidity to minimize deformation of the lamp 10 , 10 ′, including for example, aluminum. Further, the frame 34 may be made of heat resistant materials. As illustrated, the frame 34 is not transparent or translucent, thereby preventing light being emitted from the lamp 10 from passing therethrough. As such, light from the lamp 10 , 10 ′ can more efficiently be directed to the desired locations.
- the lens 36 could also be from a plurality of materials, including for example, plastic, and more specifically, polycarbonate.
- the lens 36 allows light to pass from within the housing cavity 38 to outside of the housing 32 .
- the lens 36 may be transparent, thereby allowing the light to escape the housing cavity 38 .
- the lens 36 may be translucent without departing from the scope of this disclosure. It is also possible that the lens 36 could be omitted from the lamp 10 , 10 ′.
- An LED (Light Emitting Diode) array 40 can be disposed on a mounting board 42 within the housing cavity 38 .
- the mounting board 42 can include an upper face 42 a and a lower face 42 b.
- the upper face 42 a faces toward the lens 36 and the lower face 42 b faces in a direction that is opposite the direction that the upper face 42 a faces.
- the upper face 42 a receives the LED array 40 and the lower face 42 b directly contacts the frame 34 .
- This compact assembly of the frame 34 , the LED array 40 , and the mounting board 42 allows the lamp 10 to have a reduced diameter to allow for installation in a variety of new and retrofit installations.
- the array 40 can include a plurality of LEDs.
- the LED array 40 may be disposed so as to extend in a single column format between the bases 20 , 22 . Placement of the LED array 40 in such a format between the bases 20 , 22 ensures compatibility with existing installations. For example, because the LED array 40 is disposed as described, the reflectors in existing light fixtures will be oriented so as to properly direct light from the lamp 10 , 10 ′.
- the LED array 40 will have a sufficient number of LEDs to provide for general purpose illumination.
- the LED array 40 could provide at least 900 lumens, and even greater values, for example 1800 lumens. These light output values would be attainable when the lamp 10 , 10 ′ is being operated in the normal mode or the emergency mode.
- an indicator light 44 is shown.
- the indicator light 44 may be located on the mounting board 42 to provide a visual indicator of the status of the lamp 10 .
- the indicator light 44 could indicate a strength, charging condition, and/or fault(s) of the battery pack 52 , 52 ′ or a quality of the electricity that is being supplied by the mains 12 , 14 .
- the placement of the indicator light 44 on the mounting board 42 allows for the lens 36 to protect the indicator light 44 from damage.
- the lamp 10 can also include an AC mains driver 46 , an emergency driver 48 , a microcontroller 50 , the battery pack 52 , a battery charge controller 54 , and an offline power and isolation module 56 . All of these components can be disposed within the lamp 10 , and particularly, within the housing cavity 38 of the housing 32 . As will be appreciated, these components 46 , 48 , 50 , 52 , 54 , 56 could be incorporated into a single component or a plurality of components without departing from the scope of this disclosure. It will also be appreciated that while the components are illustrated as being connected to one another with lines, and presumably, electric wires, alternative methods of connection, including for example wireless connection, are contemplated and possible.
- the AC mains driver 46 is electrically connected to the AC mains 14 through the AC mains contacts 28 . As noted hereinbefore, the AC mains 14 may be switched.
- the AC mains driver 46 is also electrically connected to the LED array 40 . As such, the LED array 40 of the lamp 10 , 10 ′ will output light in the normal mode when the wall switch 15 is in the on position (i.e., closed circuit) and the AC mains 14 is supplying electrical power through the AC mains contacts 28 to the first pair of primary pins 24 a, 24 b and the emergency mains 12 is supplying electrical power through the emergency mains contacts 30 to the second pair of primary pins 26 a, 26 b.
- the LED array 40 of the lamp 10 , 10 ′ will not output light when the wall switch 15 is in the off position (i.e., open circuit) and when the emergency mains 12 is supplying electrical power through the emergency mains contacts 30 to the second pair of primary pins 26 a, 26 b.
- the LED of the lamp 10 , 10 ′ will output light in the emergency mode when the emergency mains 12 does not supply electrical power to the emergency mains contacts 30 , and hence the second pair of primary pins 26 a, 26 b, regardless of the presence or absence of the AC mains 14 at the first pair of primary pins 24 a, 24 b. That is to say, the lamp 10 , 10 ′ will enter emergency mode when the emergency mains 12 does not supply electrical power regardless of the position of the wall switch 15 .
- the AC mains driver 46 converts the AC voltage from the AC mains 14 to DC voltage which is suitable for operating the LED array 40 .
- the AC mains driver 46 receives a form of mains power, which for example could be 100-277 V AC (50/60 Hz), from the AC mains 14 and converts it to a lower DC voltage which is supplied to the LED array 40 . This results in the LED array 40 emitting light which can subsequently be discharged through the lens 36 .
- the emergency mains 12 also supplies a form of unswitched mains power, which for example could be 100-277 V AC (50/60 Hz), during the normal mode. Further, the emergency mains 12 and the AC mains 14 may be of the same or different phases. While it is typical that a power outage event is characterized by a loss of AC mains 14 and simultaneously a loss of emergency mains 12 , it will be appreciated that an electrical fault or a test condition may cause the loss of only the AC mains 14 or the emergency mains 12 . In such a condition, the loss of emergency mains 12 will always take priority and the lamp 10 , 10 ′ will enter emergency mode.
- a power outage event is characterized by a loss of AC mains 14 and simultaneously a loss of emergency mains 12
- an electrical fault or a test condition may cause the loss of only the AC mains 14 or the emergency mains 12 . In such a condition, the loss of emergency mains 12 will always take priority and the lamp 10 , 10 ′ will enter emergency mode.
- the emergency mains 12 is not switched.
- the emergency mains 12 supplies power to the battery charge controller 54 and the offline power and isolation module 56 independent of position (i.e., on—closed circuit, off—open circuit) of the wall switch 15 .
- the battery charge controller 54 can supply electrical power to the battery pack 52 , 52 ′ at all times that emergency mains 12 is present, even though the wall switch is 15 may be off and the lamp 10 , 10 ′ may not be emitting light.
- the battery charge controller 54 is in electrical communication with the second pair of primary electrical contacts 26 a, 26 b. The only time when power would not be supplied to the offline power and isolation module 56 from the emergency mains 12 would be when there is a power outage of the circuit at the facility in which the lamp 10 , 10 ′ is installed.
- the emergency driver 48 supplies DC voltage from the battery pack 52 , 52 ′ to the LED array 40 when the lamp 10 , 10 ′ is in the emergency mode, thereby causing the LED array 40 to emit light.
- the emergency driver 48 is electrically connected to the battery pack 52 , 52 ′ and the LED array 40 .
- battery pack 52 , 52 ′ selectively supplies electrical power to the LED array 40 to cause the LED array 40 to emit light.
- the battery pack 52 , 52 ′ can be of NiMH construction and can contain sufficient electrical energy to power the LED array 40 , through the emergency driver 48 , for a period of at least 90 minutes to comply with various regulatory requirements.
- NiMH for example, lithium-ion
- other rechargeable battery types different than NiMH, for example, lithium-ion, are possible and contemplated.
- the battery charge controller 54 is in electrical communication with the emergency driver 48 , and hence, through the second pair of primary electrical contacts 26 a, 26 b, the emergency mains 12 . Further, the battery charge controller 54 is in electrical communication with the battery pack 52 , 52 ′ to selectively charge the battery pack 52 , 52 ′ during the normal mode. This is accomplished by the battery charge controller 54 supplying DC voltage to the battery pack 52 , 52 ′. As will be appreciated, the battery charge controller 54 does not supply electrical energy to the battery pack 52 , 52 ′ during the emergency mode.
- the microcontroller 50 is in electrical communication with the AC mains driver 46 , the emergency driver 48 , and the battery charge controller 54 .
- Any and/or all of the following components: the AC mains driver 46 , the emergency driver 48 , the microcontroller 50 , the battery pack 52 , the battery charge controller 54 , and the offline power and isolation module 56 may be located within the housing cavity 38 .
- locating these components within the housing cavity 38 offers numerous advantages. For example, retrofitting existing fixtures that previously housed linear fluorescent lamps with the TLED lamp 10 , 10 ′ is greatly simplified. This can be especially apparent with installations involving TLED linear lamps with a length of approximately four feet or longer.
- the battery pack 52 may be large and require a substantial amount of space within the lamp 10 , 10 ′.
- a four foot or longer lamp can incorporate the battery pack 52 within the housing cavity 38 , as shown in FIG. 4A .
- the battery pack 52 ′ could be located outside of the housing cavity 38 , as shown in FIG. 4B .
- a TLED linear lamp with a length of approximately four feet or less may have the battery pack be outside of the housing cavity due to space constraints.
- the battery pack 52 ′ may be located outside of the housing cavity 38 to accommodate a battery pack with sufficient electrical capacity to power the LED array for an extended period of time or at a greater brightness.
- the microcontroller 50 senses the presence and absence of power being supplied from the emergency mains 12 through the emergency mains contacts 30 to the second pair of primary electrical contacts 26 a, 26 b. Notably, an electrical connection between the microcontroller 50 and the battery charge controller 54 allows a presence and an absence of electrical power from the emergency mains contacts 30 to be sensed by the microcontroller 50 .
- the microcontroller 50 senses that power is being supplied to the emergency mains contacts 30 (i.e., the normal mode)
- operation of the lamp 10 , 10 ′ i.e., whether the LED array 40 emits light
- position of the wall switch 15 i.e., whether the LED array 40 emits light
- the LED array 40 is powered by AC mains driver 46 , thereby resulting in a discharge of light from the LED array 40 .
- the LED array 40 is not powered and light is not discharged from the LED array 40 .
- the lamp 10 , 10 ′ is powered by the battery pack 52 , 52 ′. More particularly, the battery pack 52 , 52 ′ provides electrical power to the emergency driver 48 and the emergency driver 48 outputs electrical power to the LED array 40 , resulting in the LED array 40 emitting light.
- operation of the lamp 10 , 10 ′ in the emergency mode is independent of the position of the wall switch 15 .
- the LED array 40 of the lamp 10 , 10 ′ will be lit even if the wall switch 15 is in the off position during the emergency mode. This ensures that building occupants are supplied sufficient light for egress should there be a power failure, even if the wall switch 15 was previously in the off position.
- the microcontroller 50 also allows tailoring of the operation of the lamp 10 , 10 ′ to specific situations, regulations, and model disparities as well as providing smart control of the lamp 10 , 10 ′.
- the microcontroller 50 can be programmed to charge the battery pack 52 , 52 ′ at a pre-determined rate according to the capacity of the battery pack 52 , 52 ′.
- the microcontroller 50 can monitor voltage of the battery pack 52 , 52 ′ to avoid over-charging of the battery pack 52 , 52 ′ by ceasing charging operation.
- the microcontroller 50 can also monitor the voltage of the battery pack 52 , 52 ′ to prevent over-discharging of the battery pack 52 , 52 ′ by ceasing the lighting function (i.e., stop the supply of electrical energy from the battery pack 52 , 52 ′ to the emergency driver 48 , thereby causing the lamp 10 , 10 ′ to not emit light) once the battery pack 52 , 52 ′ is depleted.
- the microcontroller 50 can also monitor voltage, current, and/or temperature of the battery pack 52 , 52 ′ to adjust the ‘fully-charged’ voltage level to avoid damage to the battery pack 52 , 52 ′.
- the microcontroller 50 can also disable the AC mains driver 46 while in emergency mode. Further still, the microcontroller 50 can drive the emergency lighting function or modify the power output and therefore brightness of LED array 40 to conserve battery power.
- the offline power and isolation module 56 is electrically connected to the second pair of primary electrical contacts 26 a, 26 b so as to electrically isolate the first pair of primary electrical contacts 24 a, 24 b from the second pair of primary electrical contacts 26 a, 26 b. This ensures that no shock hazard exists should one end be electrically charged while the other end is touched by a person. For example, if the lamp 10 , 10 ′ was partially installed into a fixture such that the first pair of primary electrical contacts 24 a, 24 b of the lamp 10 , 10 ′ received power from the AC mains 14 through the AC mains contacts 28 , but the individual installing the lamp 10 , 10 ′ touched the second pair of primary electrical contacts 26 a, 26 b, the installer would not be shocked. Electrical isolation between the first pair of pins 24 a, 24 b and second pair of pins 26 a, 26 b allows for the AC mains 14 and the emergency mains 12 to be of different electrical phases without creating an electrical conflict.
- the microcontroller 50 instructs the battery charge controller 54 to charge the battery pack 52 , 52 ′, if deemed necessary.
- the microcontroller 50 may make the determination of whether the battery pack 52 , 52 ′ needs charged by evaluating a number of variables relating to the battery pack 52 , 52 ′, including for example, voltage of the battery pack 52 , 52 ′ with and without a load being applied. However, as will be appreciated, power from the battery pack 52 , 52 ′ is not used to power the LED array 40 during the normal mode. As such, the battery pack 52 , 52 ′ of the TLED lamp 10 , 10 ′ is charged based upon instructions sent from the microcontroller 50 to the battery charge controller 54 located within the TLED lamp 10 , 10 ′. In particular, the microcontroller 50 may instruct the battery charge controller 54 to charge the battery pack 52 , 52 ′ at any time that the emergency mains 12 is present.
- a normally closed test button 44 a is located so as to be remote from the lamp 10 , 10 ′.
- the test button 44 a defines a normal operation position in which the test button 44 a is not depressed and the emergency mains 12 is supplying electricity to the lamp 10 , 10 ′ through the second pair of primary pins 26 a, 26 b.
- the test button 44 a also defines a test position in which the test button 44 a is depressed and the supply of electricity from the emergency mains 12 to the second pair of primary pins 26 a, 26 b is interrupted.
- the microcontroller 50 permits only the emergency driver 48 to supply the power to the LED array 40 .
- test button 44 a By depressing the test button 44 a, an open circuit between the emergency mains 12 and the microcontroller 50 is created. As such, the lamp 10 , 10 ′ is operated as though in the emergency mode. Thus, the lamp 10 , 10 ′ is then solely powered by the battery pack 52 , 52 ′ as described hereinbefore. It is also noted that, independent of the position of the wall switch 15 , the LED array 40 of the lamp 10 , 10 ′ will enter emergency mode when the test button 44 a is depressed. By locating the test button 44 a remote from the lamp 10 , 10 ′, there is no risk of if the lamp 10 , 10 ′ were changed with a dissimilar lamp that the “test” feature for the system is lost. Further, this remote placement of the test button 44 a allows for easy access to the test button 44 a for routine testing of the lamp 10 , 10 ′.
- the lamp 10 , 10 ′ may be supplied with a battery-connect element 60 .
- the battery-connect element 60 may be removably received on the second pair of auxiliary contacts 26 c, 26 d so as to electrically connect the battery pack 52 , 52 ′ to the emergency driver 48 .
- the battery-connect element 60 includes a core that is an electrical conductor and an exterior that is of an electrical insulator (i.e., made of an electrical insulative material). The core allows for electrical connection between the pins 26 c, 26 d, and hence, electrical connection of the battery pack 52 , 52 ′ to the other components of the lamp 10 , 10 ′.
- the battery-connect element 60 can be a removable item that can be supplied with the lamp 10 , 10 ′ prior to installation, but is not directly connected to the lamp 10 , 10 ′, prior to installation of the lamp 10 , 10 ′. Notably, by not installing the battery-connect element 60 until the lamp 10 , 10 ′ is ready for installation, the lamp 10 , 10 ′ does not attempt to operate with power from the battery pack 52 , 52 ′. This ensures that the battery pack 52 , 52 ′ is not unnecessarily used prior to installation of the lamp 10 , 10 ′. Subsequent to initial installation, and prior to usage of the lamp 10 , 10 ′, the battery-connect element 60 is applied to the pins 26 c, 26 d by the individual that is installing the lamp 10 , 10 ′.
- the battery-connect element 60 is placed on the lamp 10 , 10 ′ such that there is continuity between the pins 26 c, 26 d of the second base 22 to electrically connect the battery pack 52 with the rest of the lamp 10 , 10 ′.
- the size of the battery-connect element 60 can be of a small size.
- FIGS. 4A and 4B reveals that the battery pack 52 is located within the lamp 10 in FIG. 4A , whereas the battery pack 52 ′ illustrated in FIG. 4B is disposed outside of the lamp 10 ′.
- the battery-connect element 60 can be in multiple different forms without departing from the scope of the disclosure.
- the battery-connect element 60 may be integrated into the lamp 10 , 10 ′ as a switch.
- the battery-connect element 60 may be an insulating material that, when installed in the lamp 10 , 10 ′, interrupts electrical contact between the battery pack 52 , 52 ′ and the battery charge controller 54 and the emergency driver 48 . However, when removed, electrical contact is enabled.
- FIG. 4A illustrates a lamp that is approximately four feet in length
- FIG. 4B shows a lamp that is approximately two feet in length.
- any electrical power supplied to the first base 20 is isolated from the second base 22 . This isolation continues occurring any time that electrical power is supplied to the first base 20 .
- the battery-connect element 60 is installed on the TLED lamp 10 , 10 ′ to electrically connect the battery pack 52 , 52 ′ to the LED array 40 .
- the TLED lamp 10 , 10 ′ is positioned such that the first base 20 of the TLED lamp 10 , 10 ′ is electrically and mechanically connected to the AC mains contacts 28 and the second base 22 of the TLED lamp 10 , 10 ′ is electrically and mechanically connected to the emergency mains contacts 30 .
- the AC mains contacts 28 are electrically connected to a first electrical circuit, that may be switched, and the emergency mains contacts 30 are electrically connected to a second electrical circuit that is not switched.
- a presence and an absence of electrical power supplied to the second base 22 is sensed.
- the LED array 40 of the TLED lamp 10 , 10 ′ illuminates due to electrical power supplied to the first base 20 when the presence of the electrical power at the second base 22 is sensed.
- the LED array 40 of the TLED lamp 10 , 10 ′ illuminates due to electrical power from the battery pack 52 when the absence of the electrical power at the second base 22 is sensed.
- the battery pack 52 , 52 ′ of the TLED lamp 10 , 10 ′ is charged with the electrical power supplied to the second base 22 .
- the lamp 10 , 10 ′ to be incorrectly installed in the lampholders 28 , 30 (e.g., backwards).
- the lamp 10 , 10 ′ could be installed such that the first base 20 would incorrectly be in electrical communication to with the AC mains contacts 28 , while the second base 22 would incorrectly be in electrical communication with the emergency mains contacts 30 .
- an indicia is provided to differentiate between the first base and the second base.
- the first base 20 may be a neutral color, such as white, while the second base 22 could be a different color, such as red.
- labelling may be used to indicate or differentiate the first base 20 from the second base 22 .
- the lamp 10 , 10 ′ When the lamp 10 , 10 ′ is incorrectly installed, the lamp 10 , 10 ′ will enter emergency mode when the wall switch 15 is in the off position, rather than turning off, so as to notify the installer of the error. Further, pressing the test button 44 a will cause the LED array 40 to turn off if the wall switch 15 is on, or stay in emergency mode if the wall switch 15 is off. These atypical responses help ensure proper installation, and provide easy identification of improper installation to the installer or nearby observer. Further, the first lampholder 28 can be such that it mechanically prohibits receipt of the second base 22 with the battery-connect element 60 installed from achieving electrical communication.
- the TLED lamp 10 , 10 ′ can be used in retrofit installations and easily provide emergency lighting whenever there is a failure of the main power system. Further, operation and installation of the TLED lamp 10 , 10 ′ is simplified due to the similar construction to traditional linear fluorescent lamps.
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Abstract
Description
- Traditional electrical power (hereinafter AC mains) supplied by the utility company is occasionally unavailable because of power outages. Power outages may be due to local disruptions because of building emergencies or more widespread outages due to grid overloading. Thus, it is desirable to have backup lighting. This backup lighting can be used to provide building occupants sufficient light to allow egress from the building until the AC mains is restored.
- A variety of techniques can be used to supply backup lighting. However, the known techniques are either overly complicated, thereby increasing equipment and installation costs and/or do not meet building code requirements. Further, the known techniques may not be aesthetically pleasing or elegant. Thus, there is room for improvement.
- In view of the foregoing, a novel lamp with battery backup capability is provided. The lamp includes a first pair of primary electrical contacts configured to be electrically connected to a AC mains, a second pair of primary electrical contacts configured to be electrically connected to a non-switched emergency mains, and a battery charge controller in electrical communication with the second pair of electrical contacts. The lamp also includes a battery pack in electrical communication with the battery charge controller, an AC mains driver electrically connected to the first pair of primary electrical contacts, an emergency driver electrically connected to the battery pack, and an LED array in electrical communication with the AC mains driver and the emergency driver.
- A method of operating a TLED lamp includes the step of positioning the TLED lamp such that a first base of the TLED lamp is electrically and mechanically connected to a first lampholder and a second base of the TLED lamp is electrically and mechanically connected to a second lampholder. The first lampholder is electrically connected to a switched electrical mains and the second lampholder is electrically connected to a non-switched electrical mains. The method also includes the step of sensing a presence and an absence of electrical power supplied to the second base, charging a battery pack of the TLED lamp with the electrical power supplied to the second base, illuminating an LED array of the TLED lamp with electrical power supplied to the first base when the presence of the electrical power at the second base is sensed, and illuminating the LED array of the TLED lamp with electrical power from the battery when the absence of the electrical power at the second base is sensed.
- According to an embodiment, the TLED lamp includes a housing, an LED array disposed within the housing, a first base disposed at a first end of the housing, and a second base disposed at a second end of the housing. The first end and the second end are at opposite ends of the housing. The first base and the second base are electrically isolated from one another. The TLED lamp also includes an AC mains driver disposed within the housing and in electrical communication with the first base.
- The AC mains driver receives electrical power from an AC mains. The TLED lamp also includes a battery charge controller disposed within the housing and in electrical communication with the second base. The battery charge controller receives electrical power from an emergency mains. The TLED lamp also includes a battery pack disposed within the housing and in electrical communication with the battery charge controller. The battery pack is charged by the battery charge controller.
- The TLED lamp further includes an emergency driver disposed within the housing and in electrical communication with the battery pack, and a microcontroller disposed within the housing that senses a presence and an absence of power from the second base. The microcontroller instructs the AC mains driver to supply power to the LED array when power is present at the second base and supply power from the battery pack to the LED array when power is absent from the second base.
-
FIG. 1 is a front elevation view of a lamp; -
FIG. 2 is a perspective view of the lamp; -
FIG. 3 is an electrical schematic of the lamp; -
FIGS. 4A-48 are schematic views of the lamp in an installed state; and -
FIG. 5 is a flowchart illustrating a method of operating a TLED lamp. - With reference to
FIGS. 1-48 , alamp lamp emergency mains 12 would not be a switched supply. - It is noted that during the normal mode, power is selectively supplied from an
AC mains 14 to a wall switch 15 (seeFIG. 4 ). Then, if thewall switch 15 is set to on (i.e., closed circuit), power is eventually supplied to thelamp AC mains 14 to thelamp AC mains 14 could be referred to as a switched electrical mains. - During either the normal mode or the emergency mode, the
lamp AC mains 14 passes through the wall switch 15 (i.e., is a switched mains). However, it is envisioned that there may be limited situations where the AC mains is not switched (i.e., electrical power is always supplied to thelamp - The
lamp lamp present lamp - With reference to
FIGS. 1-2 and 4A-4B , thelamp 10 may include a first,end 16 and asecond end 18 that are at opposite ends of thelamp 10. Afirst base 20 can be disposed at thefirst end 16 and asecond base 22 can be disposed at thesecond end 18. Thefirst base 20 and thesecond base 22 can be compatible with conventional installations that accept G-13 medium bi-pin bases. It is noted that thefirst base 20 and thesecond base 22 could be replaced with any number of bases without departing from the scope of this disclosure. For example, thebases second base 22 were replaced with a traditional G-13 medium bi-pin base, an alternate battery connect/disconnect type device would be utilized. Alternatively, thebases - The
lamp electrical contacts 24 a, 24 b and a second pair of primaryelectrical contacts electrical contacts 24 a, 24 b may be associated with thefirst base 20 and the second pair of primaryelectrical contacts second base 22. The first pair of primaryelectrical contacts 24 a, 24 b may be a first pair ofline pins 24 a, 24 b and the second pair of primaryelectrical contacts line pins - Notably, the term primary electrical contacts can be used interchangeably with the term line, pins without departing from the scope of the disclosure. As will be appreciated, the
pins line pins 24 a, 24 b are electrically isolated from the second pair ofline pins 26 a. 26 b. Further, one of the first pair of line pins 24 a is spaced from the other of the first pair ofline pins 24 b andpins 24 a, 24 b are generally parallel to one another. Further still, one of the second pair of line pins 26 a is spaced from the other of the second pair of line pins 26 b and thepins - The
first base 20 can also include afirst base face 20 a that faces away from thesecond base 22 and the second base may include asecond base face 22 a that faces opposite thefirst base face 20 a, As illustrated in the figures, the first pair of line pins 24 a, 24 b extend from thefirst base face 20 a in a direction away from thesecond base 22. Further, the second pair of line pins 26 a, 26 b can extend from thesecond base face 22 a in a direction away from thefirst base 20. - In addition to the illustrated pins 24 a, 24 b, 26 a, 26 b, the
lamp auxiliary contacts auxiliary contacts first base 20. Thelamp auxiliary contacts auxiliary contacts second base 22. - It will also be appreciated that these
auxiliary contacts battery pack battery pack 52 may be located within thelamp 10, as shown inFIG. 4A or thebattery pack 52′ may be external to thelamp 10′, as shown inFIG. 4B . As illustrated, theauxiliary contacts auxiliary contacts auxiliary contacts respective bases bases - However, the
auxiliary contacts bases 24, 26 a sufficient distance so as to interfere with installation of thelamp battery pack auxiliary contacts connect element 60 can be interfaced with the auxiliary contacts to make electrical connection between the auxiliary contacts and providing connection between thebattery pack battery charge controller 54, as will be described in more detail hereinafter. - The
first base 20 may be of a first color and thesecond base 22 may be of a second color, where the first color is different from the second color. For example, thesecond base 22 may be red in color, while thefirst base 20 could be white in color. This differentiation in color could aid in installation of thelamp lamp first base 20 is electrically connected with and mechanically associated with theAC mains 14 and thesecond base 22 is electrically connected with and mechanically associated with theemergency mains 12. - With reference to
FIGS. 2-4B , the first pair of primaryelectrical contacts 24 a, 24 b are for electrical connection withAC mains contacts 28 and the second pair of primaryelectrical contacts 28 a, 26 b are for electrical connection withemergency mains contacts 30. As will be appreciated, theemergency mains contacts 30 are in electrical communication with theemergency mains 12 and theAC mains contacts 28 are in electrical communication with theAC mains 14. - As illustrated, the
emergency mains contacts 30 and theAC mains contacts 28 are shown as a first lampholder and a second lampholder, respectively. Thus, thefirst base 20 and thesecond base 22 can connect or interface with thecontacts - It will also be appreciated that the
emergency mains contacts 30 and theAC mains contacts 28 could be incorporated into a single component or one general location without departing from the scope of the disclosure. It is envisioned that the first lampholder and second lampholder could be different colors from one another. It is also envisioned that the first lampholder and second lampholder could be of the first color and the second color, respectively, so as to match the color selection of thefirst base 20 and thesecond base 22 to aid in proper installation of thelamp - The
first base 20 and thesecond base 22 can be disposed at opposite ends of thelamp AC mains contacts 28 can be electrically connected to theAC mains 14 through thewall switch 15 and theemergency mains contacts 30 are electrically connected to theemergency mains 12. As noted hereinbefore, an alternative system environment could be one in which theAC mains 14 does not travel through a switch. - The
emergency mains 12 is a non-switched circuit, but associated with theAC mains 14. Notably, a non-switch related outage of theAC mains 14 would also result in an outage of theemergency mains 12. As will be appreciated, thefirst base 20 and thesecond base 22 are designed to interface with non-shunted lampholders. Because of the shape and locations of thefirst base 20 and thesecond base 22, compatibility with the traditional lampholders already commonly utilized is ensured. - By arranging the
first base 20 and thesecond base 22 such that they receive electrical power from a switched mains (i.e., AC mains 14) and a non-switched mains (i.e., emergency mains 12), respectively, the emergency function of thelamp - A
housing 32 can extend between thefirst base 20 and thesecond base 22. Thehousing 32 may include aframe 34 and alens 36 that cooperate to define ahousing cavity 38. Theframe 34 can have a U-shaped cross-section. It is envisioned that theframe 34 could be made of any number of materials that would be of sufficient strength and rigidity to minimize deformation of thelamp frame 34 may be made of heat resistant materials. As illustrated, theframe 34 is not transparent or translucent, thereby preventing light being emitted from thelamp 10 from passing therethrough. As such, light from thelamp - The
lens 36 could also be from a plurality of materials, including for example, plastic, and more specifically, polycarbonate. Thelens 36 allows light to pass from within thehousing cavity 38 to outside of thehousing 32. Thelens 36 may be transparent, thereby allowing the light to escape thehousing cavity 38. Alternatively, thelens 36 may be translucent without departing from the scope of this disclosure. It is also possible that thelens 36 could be omitted from thelamp - An LED (Light Emitting Diode)
array 40 can be disposed on a mountingboard 42 within thehousing cavity 38. The mountingboard 42 can include anupper face 42 a and alower face 42 b. Theupper face 42 a faces toward thelens 36 and thelower face 42 b faces in a direction that is opposite the direction that theupper face 42 a faces. Theupper face 42 a receives theLED array 40 and thelower face 42 b directly contacts theframe 34. This compact assembly of theframe 34, theLED array 40, and the mountingboard 42 allows thelamp 10 to have a reduced diameter to allow for installation in a variety of new and retrofit installations. - As will be appreciated, the
array 40 can include a plurality of LEDs. TheLED array 40 may be disposed so as to extend in a single column format between thebases LED array 40 in such a format between thebases LED array 40 is disposed as described, the reflectors in existing light fixtures will be oriented so as to properly direct light from thelamp - It will also be appreciated that the
LED array 40 will have a sufficient number of LEDs to provide for general purpose illumination. For example, it is envisioned that theLED array 40 could provide at least 900 lumens, and even greater values, for example 1800 lumens. These light output values would be attainable when thelamp - With attention to
FIG. 2 , anindicator light 44 is shown. Theindicator light 44 may be located on the mountingboard 42 to provide a visual indicator of the status of thelamp 10. For example, theindicator light 44 could indicate a strength, charging condition, and/or fault(s) of thebattery pack mains indicator light 44 on the mountingboard 42 allows for thelens 36 to protect the indicator light 44 from damage. - With reference to
FIG. 3 , thelamp 10 can also include anAC mains driver 46, anemergency driver 48, amicrocontroller 50, thebattery pack 52, abattery charge controller 54, and an offline power andisolation module 56. All of these components can be disposed within thelamp 10, and particularly, within thehousing cavity 38 of thehousing 32. As will be appreciated, thesecomponents - The
AC mains driver 46 is electrically connected to theAC mains 14 through theAC mains contacts 28. As noted hereinbefore, theAC mains 14 may be switched. TheAC mains driver 46 is also electrically connected to theLED array 40. As such, theLED array 40 of thelamp wall switch 15 is in the on position (i.e., closed circuit) and theAC mains 14 is supplying electrical power through theAC mains contacts 28 to the first pair ofprimary pins 24 a, 24 b and theemergency mains 12 is supplying electrical power through theemergency mains contacts 30 to the second pair ofprimary pins - Further, the
LED array 40 of thelamp wall switch 15 is in the off position (i.e., open circuit) and when theemergency mains 12 is supplying electrical power through theemergency mains contacts 30 to the second pair ofprimary pins lamp emergency mains 12 does not supply electrical power to theemergency mains contacts 30, and hence the second pair ofprimary pins AC mains 14 at the first pair ofprimary pins 24 a, 24 b. That is to say, thelamp emergency mains 12 does not supply electrical power regardless of the position of thewall switch 15. - The
AC mains driver 46 converts the AC voltage from theAC mains 14 to DC voltage which is suitable for operating theLED array 40. In the normal mode, theAC mains driver 46 receives a form of mains power, which for example could be 100-277 V AC (50/60 Hz), from theAC mains 14 and converts it to a lower DC voltage which is supplied to theLED array 40. This results in theLED array 40 emitting light which can subsequently be discharged through thelens 36. - The
emergency mains 12 also supplies a form of unswitched mains power, which for example could be 100-277 V AC (50/60 Hz), during the normal mode. Further, theemergency mains 12 and theAC mains 14 may be of the same or different phases. While it is typical that a power outage event is characterized by a loss ofAC mains 14 and simultaneously a loss ofemergency mains 12, it will be appreciated that an electrical fault or a test condition may cause the loss of only theAC mains 14 or theemergency mains 12. In such a condition, the loss ofemergency mains 12 will always take priority and thelamp - As will be appreciated, the
emergency mains 12 is not switched. Thus, theemergency mains 12 supplies power to thebattery charge controller 54 and the offline power andisolation module 56 independent of position (i.e., on—closed circuit, off—open circuit) of thewall switch 15. Thus, thebattery charge controller 54 can supply electrical power to thebattery pack emergency mains 12 is present, even though the wall switch is 15 may be off and thelamp battery charge controller 54 is in electrical communication with the second pair of primaryelectrical contacts isolation module 56 from theemergency mains 12 would be when there is a power outage of the circuit at the facility in which thelamp - The
emergency driver 48 supplies DC voltage from thebattery pack LED array 40 when thelamp LED array 40 to emit light. Thus, theemergency driver 48 is electrically connected to thebattery pack LED array 40. As such,battery pack LED array 40 to cause theLED array 40 to emit light. - The
battery pack LED array 40, through theemergency driver 48, for a period of at least 90 minutes to comply with various regulatory requirements. As will be appreciated, other rechargeable battery types, different than NiMH, for example, lithium-ion, are possible and contemplated. - The
battery charge controller 54 is in electrical communication with theemergency driver 48, and hence, through the second pair of primaryelectrical contacts emergency mains 12. Further, thebattery charge controller 54 is in electrical communication with thebattery pack battery pack battery charge controller 54 supplying DC voltage to thebattery pack battery charge controller 54 does not supply electrical energy to thebattery pack - As shown in
FIG. 3 , themicrocontroller 50 is in electrical communication with theAC mains driver 46, theemergency driver 48, and thebattery charge controller 54. Any and/or all of the following components: theAC mains driver 46, theemergency driver 48, themicrocontroller 50, thebattery pack 52, thebattery charge controller 54, and the offline power andisolation module 56 may be located within thehousing cavity 38. As will be appreciated, locating these components within thehousing cavity 38 offers numerous advantages. For example, retrofitting existing fixtures that previously housed linear fluorescent lamps with theTLED lamp - As will be appreciated, the
battery pack 52 may be large and require a substantial amount of space within thelamp battery pack 52 within thehousing cavity 38, as shown inFIG. 4A . However, thebattery pack 52′ could be located outside of thehousing cavity 38, as shown inFIG. 4B . For example, a TLED linear lamp with a length of approximately four feet or less may have the battery pack be outside of the housing cavity due to space constraints. Thebattery pack 52′ may be located outside of thehousing cavity 38 to accommodate a battery pack with sufficient electrical capacity to power the LED array for an extended period of time or at a greater brightness. - The
microcontroller 50 senses the presence and absence of power being supplied from theemergency mains 12 through theemergency mains contacts 30 to the second pair of primaryelectrical contacts microcontroller 50 and thebattery charge controller 54 allows a presence and an absence of electrical power from theemergency mains contacts 30 to be sensed by themicrocontroller 50. Thus, when themicrocontroller 50 senses that power is being supplied to the emergency mains contacts 30 (i.e., the normal mode), operation of thelamp LED array 40 emits light) is dictated by position of thewall switch 15. - As such, during the normal mode, when the
wall switch 15 is in the on position, theLED array 40 is powered byAC mains driver 46, thereby resulting in a discharge of light from theLED array 40. Whereas, also during the normal mode, when thewall switch 15 is in the off position, theLED array 40 is not powered and light is not discharged from theLED array 40. - Alternatively, when the
microcontroller 50 senses that power is not being supplied to the emergency mains contacts 30 (i.e., the emergency mode), thelamp battery pack battery pack emergency driver 48 and theemergency driver 48 outputs electrical power to theLED array 40, resulting in theLED array 40 emitting light. - Notably, operation of the
lamp wall switch 15. Stated plainly, theLED array 40 of thelamp wall switch 15 is in the off position during the emergency mode. This ensures that building occupants are supplied sufficient light for egress should there be a power failure, even if thewall switch 15 was previously in the off position. - The
microcontroller 50 also allows tailoring of the operation of thelamp lamp microcontroller 50 can be programmed to charge thebattery pack battery pack microcontroller 50 can monitor voltage of thebattery pack battery pack - The
microcontroller 50 can also monitor the voltage of thebattery pack battery pack battery pack emergency driver 48, thereby causing thelamp battery pack microcontroller 50 can also monitor voltage, current, and/or temperature of thebattery pack battery pack - As will be appreciated, actual measurement of the voltage, current, and/or temperature of the
battery pack microcontroller 50 can also disable theAC mains driver 46 while in emergency mode. Further still, themicrocontroller 50 can drive the emergency lighting function or modify the power output and therefore brightness ofLED array 40 to conserve battery power. - The offline power and
isolation module 56 is electrically connected to the second pair of primaryelectrical contacts electrical contacts 24 a, 24 b from the second pair of primaryelectrical contacts lamp electrical contacts 24 a, 24 b of thelamp AC mains 14 through theAC mains contacts 28, but the individual installing thelamp electrical contacts pins 24 a, 24 b and second pair ofpins AC mains 14 and theemergency mains 12 to be of different electrical phases without creating an electrical conflict. - Thus, in the normal mode, as determined by the
microcontroller 50, power is supplied from theAC mains 14 through theAC mains contacts 28. This AC electrical energy is then converted by theAC mains driver 46 into a lower >DC voltage and used to power theLED array 40, thereby resulting in theLED array 40 discharging light from thehousing cavity 38. Simultaneously, in the normal mode, power is also supplied by theemergency mains 12 through theemergency mains contacts 30. - The
microcontroller 50 instructs thebattery charge controller 54 to charge thebattery pack microcontroller 50 may make the determination of whether thebattery pack battery pack battery pack battery pack LED array 40 during the normal mode. As such, thebattery pack TLED lamp microcontroller 50 to thebattery charge controller 54 located within theTLED lamp microcontroller 50 may instruct thebattery charge controller 54 to charge thebattery pack emergency mains 12 is present. - As illustrated in.
FIGS. 4A-4B , a normally closedtest button 44 a is located so as to be remote from thelamp test button 44 a defines a normal operation position in which thetest button 44 a is not depressed and theemergency mains 12 is supplying electricity to thelamp primary pins test button 44 a also defines a test position in which thetest button 44 a is depressed and the supply of electricity from theemergency mains 12 to the second pair ofprimary pins test button 44 a is in the test position, themicrocontroller 50 permits only theemergency driver 48 to supply the power to theLED array 40. - By depressing the
test button 44 a, an open circuit between theemergency mains 12 and themicrocontroller 50 is created. As such, thelamp lamp battery pack wall switch 15, theLED array 40 of thelamp test button 44 a is depressed. By locating thetest button 44 a remote from thelamp lamp test button 44 a allows for easy access to thetest button 44 a for routine testing of thelamp - With reference to
FIGS. 4A-4B , thelamp connect element 60. The battery-connect element 60 may be removably received on the second pair ofauxiliary contacts battery pack emergency driver 48. The battery-connect element 60 includes a core that is an electrical conductor and an exterior that is of an electrical insulator (i.e., made of an electrical insulative material). The core allows for electrical connection between thepins battery pack lamp - The battery-
connect element 60 can be a removable item that can be supplied with thelamp lamp lamp connect element 60 until thelamp lamp battery pack battery pack lamp lamp connect element 60 is applied to thepins lamp - In particular, the battery-
connect element 60 is placed on thelamp pins second base 22 to electrically connect thebattery pack 52 with the rest of thelamp pins 26 e, 26 d, and hence the battery-connect element 60 on thesecond base 22, the size of the battery-connect element 60 can be of a small size. Comparison betweenFIGS. 4A and 4B reveals that thebattery pack 52 is located within thelamp 10 inFIG. 4A , whereas thebattery pack 52′ illustrated inFIG. 4B is disposed outside of thelamp 10′. - The battery-
connect element 60 can be in multiple different forms without departing from the scope of the disclosure. For example, the battery-connect element 60 may be integrated into thelamp connect element 60 may be an insulating material that, when installed in thelamp battery pack battery charge controller 54 and theemergency driver 48. However, when removed, electrical contact is enabled. - Thus, the only non-dimensional difference between the
lamp 10 ofFIG. 4A and thelamp 10′ ofFIG. 4B , is that thebattery pack 52 of thelamp 10 is located within thelamp 10 and thebattery pack 52′ of thelamp 10′ is located exterior of thelamp 10′. As such, there are no other differences between thelamps FIGS. 4A and 4B . Typically,FIG. 4A illustrates a lamp that is approximately four feet in length, whereasFIG. 4B shows a lamp that is approximately two feet in length. - With reference to
FIG. 5 , a method of operating a TLED lamp is shown. At 100, any electrical power supplied to thefirst base 20 is isolated from thesecond base 22. This isolation continues occurring any time that electrical power is supplied to thefirst base 20. At 110, the battery-connect element 60 is installed on theTLED lamp battery pack LED array 40. At 120, theTLED lamp first base 20 of theTLED lamp AC mains contacts 28 and thesecond base 22 of theTLED lamp emergency mains contacts 30. For reference, theAC mains contacts 28 are electrically connected to a first electrical circuit, that may be switched, and theemergency mains contacts 30 are electrically connected to a second electrical circuit that is not switched. - At 130, a presence and an absence of electrical power supplied to the
second base 22 is sensed. At 140, theLED array 40 of theTLED lamp first base 20 when the presence of the electrical power at thesecond base 22 is sensed. Alternatively, at 150, theLED array 40 of theTLED lamp battery pack 52 when the absence of the electrical power at thesecond base 22 is sensed. At 160, thebattery pack TLED lamp second base 22. - As will be appreciated, because of the similar construction of the
first base 20 and thesecond base 22, thelamp lampholders 28, 30 (e.g., backwards). For example, thelamp first base 20 would incorrectly be in electrical communication to with theAC mains contacts 28, while thesecond base 22 would incorrectly be in electrical communication with theemergency mains contacts 30. To prevent this scenario, an indicia is provided to differentiate between the first base and the second base. For example, thefirst base 20 may be a neutral color, such as white, while thesecond base 22 could be a different color, such as red. Further, labelling may be used to indicate or differentiate thefirst base 20 from thesecond base 22. - When the
lamp lamp wall switch 15 is in the off position, rather than turning off, so as to notify the installer of the error. Further, pressing thetest button 44 a will cause theLED array 40 to turn off if thewall switch 15 is on, or stay in emergency mode if thewall switch 15 is off. These atypical responses help ensure proper installation, and provide easy identification of improper installation to the installer or nearby observer. Further, thefirst lampholder 28 can be such that it mechanically prohibits receipt of thesecond base 22 with the battery-connect element 60 installed from achieving electrical communication. - As will also be appreciated, this method offers numerous advantages. For example, the
TLED lamp TLED lamp - A lamp with battery backup capability has been described above with particularity. Modifications and alterations will occur to those upon reading and understanding the preceding detailed description. The invention, however, is not limited to only the embodiments described above. Instead, the invention is broadly defined by the appended claims and the equivalents thereof. Moreover, it will be appreciated that variations of the above-disclosed components and other features and functions, or alternatives or varieties thereof, may be desirably combined into many other different systems or applications. Also that various presently unforeseen or unanticipated alternatives, modifications, variations or improvements therein may be subsequently made by those skilled in the art which are also intended to be encompassed by the following claims.
Claims (20)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US16/256,258 US20190157902A1 (en) | 2016-04-22 | 2019-01-24 | Lamp with battery backup capability |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201662326261P | 2016-04-22 | 2016-04-22 | |
US15/493,216 US10236716B2 (en) | 2016-04-22 | 2017-04-21 | Lamp with battery backup capability |
US16/256,258 US20190157902A1 (en) | 2016-04-22 | 2019-01-24 | Lamp with battery backup capability |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US15/493,216 Continuation US10236716B2 (en) | 2016-04-22 | 2017-04-21 | Lamp with battery backup capability |
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US20190157902A1 true US20190157902A1 (en) | 2019-05-23 |
Family
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Family Applications (2)
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US15/493,216 Active US10236716B2 (en) | 2016-04-22 | 2017-04-21 | Lamp with battery backup capability |
US16/256,258 Abandoned US20190157902A1 (en) | 2016-04-22 | 2019-01-24 | Lamp with battery backup capability |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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US15/493,216 Active US10236716B2 (en) | 2016-04-22 | 2017-04-21 | Lamp with battery backup capability |
Country Status (3)
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US (2) | US10236716B2 (en) |
TW (1) | TW201738503A (en) |
WO (1) | WO2017184910A1 (en) |
Cited By (1)
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US11326745B2 (en) * | 2020-06-30 | 2022-05-10 | Xiamen Leedarson Lighting Co. Ltd | LED light tube apparatus |
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US10222006B2 (en) | 2016-03-15 | 2019-03-05 | Energy Focus, Inc. | Tubular lamp and lamp socket with power pin connector and signal pin connector |
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US10663129B1 (en) * | 2018-12-30 | 2020-05-26 | Shenzhen Itsuwa Light Co., Ltd. | Emergency lighting fixture |
USD957025S1 (en) * | 2019-11-08 | 2022-07-05 | Lin Qiu | LED light |
EP4240114A1 (en) * | 2022-03-02 | 2023-09-06 | Zumtobel Lighting GmbH | Driver for lighting means, emergency lighting system and methods for operating driver |
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Also Published As
Publication number | Publication date |
---|---|
US10236716B2 (en) | 2019-03-19 |
WO2017184910A1 (en) | 2017-10-26 |
US20170310157A1 (en) | 2017-10-26 |
TW201738503A (en) | 2017-11-01 |
WO2017184910A8 (en) | 2017-11-23 |
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