Note: Descriptions are shown in the official language in which they were submitted.
84067184
TITLE OF THE INVENTION
LED LUMINAIRE WITH INTEGRATED BATTERY BACKUP
[01]
BACKGROUND OF THE INVENTION
[02] (1) Field of the Invention: The instant invention relates to LED
luminaires and
more specifically to an LED luminaire with an integrated battery backup.
[03] (2) Description of Related Art: Most commercial building codes require
that
lighting systems have emergency egress lights with a battery backup power
supply.
However, many of the available devices typically mount the battery backup
within
the visible, body portion of the luminaire itself, resulting in a bulky and
unattractive
luminaire body portion.
[04] Accordingly, there is a need in the industry for a luminaire unit
where the
battery backup assembly is not mounted within the luminaire body itself so
that the
unit can be more attractively designed.
SUMMARY OF THE INVENTION
[05] This industry need is met by the present disclosure which provides a
luminaire
unit with an integrated battery backup assembly that is received and secured
within
the hidden light fixture housing mounted within the building infrastructure.
This
integrated design provides for a discreet battery backup and a luminaire body
unit
that is more attractive.
[06] In the exemplary embodiments, the LED luminaire is divided into a
decorative
body portion and a hidden infrastructure portion. More specifically, the LED
I uminaire
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comprises a luminaire body having a main lighting deck and a decorative skirt
extending
from the main lighting deck. In one embodiment, a plurality or LEDs are
arranged in a
single array on the main lighting deck. A diffuser panel is received and
secured in
interfitting relation over the main lighting deck to diffuse and soften the
light emitting
from the LED array. The decorative luminaire body and the diffuser panel are
contoured
to resemble the appearance of a recessed light fixture and flood bulb. An LED
driver
module is mounted on a rear surface of the main lighting deck of the luminaire
body
and is connected to the LED array. The LED driver module has a normal power
supply
input and is configured to control delivery of power from the normal power
supply input
to the LED array. Power from the normal power supply input can be switched or
continuous.
[07] The hidden infrastructure portion of the luminaire includes a light
fixture housing
configured and arranged to be mounted within a building infrastructure, an
emergency
battery backup assembly, and a housing fixture bracket which supports the
emergency
battery backup assembly within the light fixture housing.
[08] The light fixture housing has a top wall and downwardly extending
sidewalls
forming an internal cavity which is deeper than a conventional junction box to
accommodate the emergency battery backup assembly. The emergency battery
backup
assembly is received within an upper portion of the internal cavity of the
light fixture
housing adjacent the top wall.
[09] The emergency battery backup assembly includes a backup battery, and
an
emergency light control module connected between the backup battery and the
LED
array. The emergency light control module has an emergency power supply input
which
is active when the normal power supply is not available. The emergency backup
components are mounted on an upper surface of the housing fixture bracket and
the
bracket is secured within the light fixture housing to position the emergency
backup
assembly in the upper portion of the internal cavity.
[10] The luminaire body is assembled in interfitting relation with the
light fixture
housing where the rear surface of the main lighting deck of the luminaire body
is
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received in adjacent relation with terminal edges of said sidewalls. More
specifically, two
mounting screws extend downwardly from the fixture housing and the main
lighting
deck includes two mounting slots which rotatably receive the heads of the
mounting
screws.
[11] In operation, the emergency light control module charges the backup
battery
when power is available from the normal power supply or the emergency power
supply. Once charged, the LED driver module and the emergency light control
module cooperate to provide power to the first LED array from the normal power
supply when the normal power supply is available, from the emergency power
supply
when the normal power supply is not available, and from the backup battery
when
neither of the normal power supply and the emergency power supply are
available.
[12] In a second embodiment, separate first and second LED arrays are
mounted
on the lighting deck. An LED driver module is connected to the first LED
array. The
LED driver has a normal power supply input and delivers power to said first
LED array.
The emergency light control module is connected between the backup battery and
the second LED array and includes a sensing circuit connected to the LED
driver
module.
[13] In operation, power is supplied directly to the first LED array when
either
normal power or emergency power is present. When both the normal power and
emergency power fail, the emergency battery backup assembly senses the lack of
power and supplies battery power to the second LED array.
[013a] According to one aspect of the present invention, there is provided
an LED
luminaire comprising: a luminaire body; a first LED array mounted on said
luminaire
body; a second LED array mounted on said luminaire body; an LED driver module
connected to said first LED array, said LED driver module having a normal
power
supply input and being configured to control delivery of power from said
normal
power supply input to said first LED array;a light fixture housing configured
and
arranged to be mounted within a building infrastructure; an emergency battery
backup assembly received within said light fixture housing, said emergency
battery
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backup assembly including a backup battery, and an emergency light control
module
connected between said backup battery and said second LED array, said
emergency
light control module including an emergency power supply input; a housing
fixture
bracket, said emergency backup assembly mounted on said housing fixture
bracket,
said housing fixture support bracket being secured within said light fixture
housing,
said luminaire body being removably assembled in interfitting relation with
said light
fixture housing, said emergency light control module charging said backup
battery
when power is available from said normal power supply or said emergency power
supply, said LED driver module, said emergency light control module and said
backup
battery cooperating to provide power to said first LED array from said normal
power
supply when said normal power supply is available and when said normal power
supply is not available, and supplying power to said second LED array from
said
backup battery when neither of said normal power supply and said emergency
power
supply are available.
BRIEF DESCRIPTION OF THE DRAWINGS
[14] While the specification concludes with claims particularly pointing
out and
distinctly claiming particular embodiments of the instant invention, various
embodiments of the invention can be more readily understood and appreciated
from
the following descriptions of various embodiments of the invention when read
in
conjunction with the accompanying drawings in which:
[15] Fig. 1 is an exploded perspective view of an exemplary embodiment;
[16] Figs. 2 and 3 partially assembled views thereof;
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[17] Fig. 4 is a rear plan view thereof including wiring connections;
[18] Fig. 5 is a schematic wiring diagram of the electronic components
thereof;
[19] Fig. 6 is an exploded perspective view of another exemplary
embodiment;
[20] Fig. 7 is a partially assembled view thereof;
[21] Fig. 8 is a front plan view thereof;
[22] Fig. 9 is a rear plan view thereof including wiring connections; and
[23] Fig. 10 is a schematic wiring diagram of the electronic components
thereof.
DETAILED DESCRIPTION OF THE INVENTION
[24] Referring now to the drawings, an exemplary embodiment of the
invention is
generally indicated at 10 in Figs. 1-5.
[25] In the exemplary embodiment, the LED luminaire 10 is divided into a
decorative
body portion generally indicated at 12 and a hidden infrastructure portion
generally
indicated at 14. More specifically, the LED luminaire 10 comprises a luminaire
body 16
having a main lighting deck 18 and a decorative skirt 20 extending from the
main
lighting deck 18. At least one LED 22 is mounted on the main lighting deck 18
of the
luminaire body 16, but in most embodiments, a plurality or LEDs 22 will be
arranged in
an array on the main lighting deck 18. A diffuser panel 24 is received and
secured in
interfitting relation over the main lighting deck 18 to diffuse and soften the
light emitted
from the LED array 22. The exemplary embodiment illustrates a twist mount
arrangement. The decorative luminaire body 16, skirt 20 and the diffuser panel
24 are
contoured to resemble the appearance of a recessed light fixture trim and
flood bulb.
[26] An LED driver module 26 is mounted on a rear surface of the main
lighting deck
18 of the luminaire body 16 and is connected (see 27 in Fig. 5) to the LED
array 22. The
LED driver module 26 has a normal power supply input 28 and is configured to
control
delivery of power from the normal power supply 30 to the LED array 22. Power
from
the normal power supply input 28 can be switched or continuous.
[27] The hidden infrastructure portion 14 of the luminaire 10 includes a
light fixture
housing generally indicated at 32 configured and arranged to be mounted within
a
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building infrastructure (not shown), an emergency battery backup assembly
generally
indicated 34, and a housing fixture bracket 36 which supports the emergency
battery
backup assembly 34 within the light fixture housing 32.
[28] The light fixture housing 32 has a top wall 38 and downwardly
extending
sidewalls 40 forming an internal cavity which is deeper than a conventional
junction box
to accommodate the emergency battery backup assembly 34. The emergency battery
backup assembly 34 is received within an upper portion of the internal cavity
of the light
fixture housing 32 adjacent the top wall 38. The light fixture housing 32
further includes
opposed mounting brackets 42 for mounting the housing 32 to ceiling joists or
other
building infrastructure.
[29] The emergency battery backup assembly 34 includes a backup battery 44,
and an
emergency light control module 46 connected between the backup battery 44
(B+/B-
Figs. 4 and 5) and the LED Driver 26 and LED array 22 (LED+/LED- Figs. 4 and
5). The
backup battery 44 is sized to fit the space requirements within the light
fixture housing
32. The emergency light control module 46 has an emergency power supply input
48
that is separately connected to an emergency power supply 50 and which is
active when
the normal power supply 30 is not available.
[30] The light fixture bracket 36 comprises a main deck plate 52 configured
to fit
within the inner dimensions of the light fixture housing 32, and opposing
support arms
54 extending downwardly from a bottom surface of the deck plate 52. Each of
the
support arms 54 includes an inwardly turned mounting flange 56. The emergency
backup components (battery 44 and module 46) are mounted on an upper surface
of
the deck plate 52 and the bracket 36 is secured within the light fixture
housing 32 to
position the emergency backup assembly 34 in the upper portion of the internal
cavity
of the housing. The bracket 36 is secured to the housing 32 by two screws 58
which are
received through the flanges 56 and into mating tabs 60 turned inwardly from
the
sidewalls 40 of the housing 32. The battery 44 and module 46 are illustrated
as being
secured with clamp bars 62, however, it should be understood that these
components
can be secured in a variety of ways to the deck plate 52.
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[31] The luminaire body 16 is assembled in interfitting relation with the
light fixture
housing 32 and bracket 36 where the rear surface of the main lighting deck 18
is
received in adjacent relation with terminal edges of said sidewalls 40. More
specifically,
two mounting screws 64 extend downwardly from the fixture bracket flanges 56
and the
main lighting deck includes two arcuate mounting slots 66 which rotatably
receive the
heads of the mounting screws 64.
[32] The LED luminaire further includes a battery status indicator LED 68
mounted on
the main lighting deck 18 of the luminaire body 16. The battery status
indicator LED 68
is electrically connected (AO/A1/A2 Figs. 4 and 5) to the emergency light
control module
46 wherein the emergency light control module 46 is operative for operating
the battery
status indicator LED 68 in at least charging mode and a charged mode.
[33] In operation, the emergency light control module 46 charges the backup
battery
44 when power is available from the normal power supply 30 or the emergency
power
supply 50. Once charged, the LED driver module 26, the emergency light control
module 46 and the battery 44 cooperate to provide power to the LED array from
the
normal power supply 30 when the normal power supply is available, from the
emergency power supply 50 when the normal power supply is not available, and
from
the backup battery 44 when neither of the normal power supply 30 and the
emergency
power supply 50 are available.
[34] It is contemplated that the LED driver module 26 could also be
integrated and
located with the emergency battery backup assembly 34 to further simplify the
decorative luminaire body structure 16.
[35] Another exemplary embodiment of the invention is generally indicated
at 110 in
Figs. 6-10. The LED luminaire 110 is also divided into a decorative body
portion generally
indicated at 112 and a hidden infrastructure portion generally indicated at
114. The LED
luminaire 110 comprises a luminaire body 116 having a main lighting deck 118
and a
decorative skirt 120 extending from the main lighting deck 118. Separate first
and
second arrays of LED's 122A and 122B are mounted on the main lighting deck
118. The
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first array 122A is powered by regular power 130 and backup power 150 while
the
second array 122B is powered by the backup battery 144.
[36] Diffuser panel 124 is received and secured in interfitting relation
over the main
lighting deck 118 to diffuse and soften the light emitted from the LED arrays
122.
[37] An LED driver module 126 is connected to the LED array 122A. The LED
driver
module 126 has a normal power supply input 128 and is configured to control
delivery
of power from the normal power supply 130 to the LED array 122A.
[38] The infrastructure portion 114 of the luminaire 110 includes a light
fixture
housing generally indicated at 132 configured and arranged to be mounted
within a
building infrastructure (not shown), an emergency battery backup assembly
generally
indicated 134, and a housing fixture bracket 136 which supports the emergency
battery
backup assembly 134 within the light fixture housing 132.
[39] The emergency battery backup assembly 134 is received within an upper
portion
of the internal cavity of the light fixture housing 132 and includes a backup
battery 144,
and an emergency light control module 146 connected between the backup battery
144
and the second LED array 12211 The backup battery 144 is slightly smaller than
the
earlier described embodiment, and sized to fit the space requirements within a
regular
sized light fixture housing 132. The emergency light control module 146 has an
emergency power supply input 148 that is separately connected to an emergency
power
supply 150 which is active when the normal power supply 130 is not available.
It is
noted that most buildings provide both emergency and normal power over a
single feed
and therefore the normal and emergency power are essentially the same input.
[40] The emergency backup components (battery 144 and module 146) are
mounted
to the bracket 136 which is secured to the housing 132 by two screws 158
similar to the
earlier described embodiment.
[41] The emergency light control module 146 includes a sensing circuit 170
(Fig. 10 ¨
WW) connected to the LED driver module 126. During a total power failure, the
control
module 146 senses the presence of power at the inputs 128 of the LED driver
module
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126, and selectively provides power to the second LED array 122B when neither
of the
normal power supply 130 and the emergency power supply 150 are available.
[42] The LED luminaire 110 further includes a battery status indicator LED
168
mounted on the main lighting deck 118 of the luminaire body 116. The battery
status
indicator LED 168 is electrically connected to the emergency light control
module 146
where it is operative for indicating a charging mode and a charged mode.
[43] In operation, power is supplied directly to the first LED array when
either normal
power or emergency power is present. When both the normal power and emergency
power fail, the emergency battery backup assembly senses the lack of power and
supplies battery power to the second LED array.
[44] It can therefore be seen that the exemplary embodiments provide a
unique and
novel luminaire unit having an integrated battery backup assembly that is
received and
secured within the hidden light fixture housing mounted within the building
infrastructure. This design provides for a discreet battery backup and a
luminaire body
that is more attractively designed and more aesthetically similar to existing
recessed
lighting fixtures.
[45] While there is shown and described herein certain specific structures
embodying
various embodiments of the invention, it will be manifest to those skilled in
the art that
various modifications and rearrangements of the parts may be made without
departing
from the spirit and scope of the underlying inventive concept and that the
same is not
limited to the particular forms herein shown and described except insofar as
indicated
by the scope of the appended claims.
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