U.S. patent application number 16/990708 was filed with the patent office on 2020-11-26 for lighting system.
The applicant listed for this patent is LIFI Labs, Inc.. Invention is credited to Marc Alexander.
Application Number | 20200375013 16/990708 |
Document ID | / |
Family ID | 1000005008435 |
Filed Date | 2020-11-26 |
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United States Patent
Application |
20200375013 |
Kind Code |
A1 |
Alexander; Marc |
November 26, 2020 |
LIGHTING SYSTEM
Abstract
A connected downlight including: a housing module including a
first housing end and a second housing end; a lighting module
mounted to the first housing end; and a wireless communication
module including an antenna and arranged within the housing
interior proximal the second housing end.
Inventors: |
Alexander; Marc; (San
Francisco, CA) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
LIFI Labs, Inc. |
San Francisco |
CA |
US |
|
|
Family ID: |
1000005008435 |
Appl. No.: |
16/990708 |
Filed: |
August 11, 2020 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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16681384 |
Nov 12, 2019 |
10779384 |
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16990708 |
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15905637 |
Feb 26, 2018 |
10512140 |
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16681384 |
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62463665 |
Feb 26, 2017 |
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62475516 |
Mar 23, 2017 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F21V 23/045 20130101;
G05B 15/02 20130101; F21V 3/02 20130101; F21V 14/02 20130101; F21S
9/02 20130101; F21Y 2115/10 20160801; F21V 29/83 20150115; F21V
7/06 20130101; F21V 21/14 20130101; F21S 8/026 20130101; H05B 47/19
20200101 |
International
Class: |
H05B 47/19 20060101
H05B047/19; G05B 15/02 20060101 G05B015/02; F21V 29/83 20060101
F21V029/83; F21V 21/14 20060101 F21V021/14; F21V 14/02 20060101
F21V014/02; F21S 9/02 20060101 F21S009/02; F21S 8/02 20060101
F21S008/02; F21V 7/06 20060101 F21V007/06; F21V 23/04 20060101
F21V023/04 |
Claims
1. A connected downlight, comprising: a facing having a facing
height; an external mounting mechanism mounted to the facing; a
housing, comprising: a heat sink mounted to the facing, the heat
sink having a first side, a second side opposing the first side, a
first thermal conductivity value, and a heat sink height taller
than the facing height; an RF-translucent end cap mounted to the
second side of the heat sink and coaxially aligned along a
longitudinal axis with the heat sink, the RF-translucent end cap
having a second thermal conductivity value; and a set of cooling
channels cooperatively defined by the heat sink and the end cap,
the set of cooling channels fluidly connecting a housing interior
with a housing exterior; a lighting module comprising: a substrate
mounted and thermally connected to the first side of the heat sink;
and a plurality of light emitting elements mounted to the
substrate; and a wireless communication module comprising an
antenna, the antenna arranged separate from the lighting module and
mounted within the housing interior, proximal the end cap.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of U.S. patent
application Ser. No. 16/681,384, filed 12 Nov. 2019, which is a
continuation of U.S. patent application Ser. No. 15/905,637, filed
26 Feb. 2018, which claims the benefit of U.S. Provisional
Application No. 62/463,665, filed 26 Feb. 2017 and 62/475,516,
filed 23 Mar. 2017, all of which are incorporated in their
entireties by this reference.
TECHNICAL FIELD
[0002] This invention relates generally to the connected lighting
field, and more specifically to a new and useful lighting system
and housing in the connected lighting field.
BRIEF DESCRIPTION OF THE FIGURES
[0003] FIG. 1 is a schematic representation of an embodiment of the
lighting system.
[0004] FIG. 2 is a schematic representation of an embodiment of the
lighting system in operation.
[0005] FIG. 3 is an installed example of the lighting system.
[0006] FIG. 4 is an example of the electronic components within the
lighting system.
[0007] FIG. 5 is a schematic representation of thermal flow
throughout an example of the lighting system.
[0008] FIG. 6 is a schematic representation of an example of the
housing of the lighting system.
[0009] FIG. 7 is a cross-sectional view of an embodiment of the
lighting system along a sagittal plane.
[0010] FIG. 8 is an exploded view of an embodiment of the lighting
system.
[0011] FIG. 9 is a cross-sectional view of an embodiment of the
lighting system along the transverse plane.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0012] The following description of the preferred embodiments of
the invention is not intended to limit the invention to these
preferred embodiments, but rather to enable any person skilled in
the art to make and use this invention.
1. Overview
[0013] As shown in FIG. 1, the lighting system 100 includes a
housing module 200 (e.g., housing) including a first housing end
220 and a second housing end 240 defining a housing interior 260
and a housing exterior 280; a lighting module 300 including a
substrate 320 mounted to a plurality of light emitting elements
340, a facing 370, and a mounting mechanism 390 arranged on the
housing exterior 280 proximal the first housing end 220; a wireless
communication module 400 including an antenna 420 and arranged
within the housing interior 260 proximal the second housing end
240; a computing system 500, and a power supply unit 600. The
lighting system 100 can additionally include a plurality of sensors
700.
[0014] The lighting system 100 functions as a wirelessly-connected
lighting fixture (e.g., bulb). The lighting system 100 further
functions to cool components that generate heat (e.g., by
conduction, convection, radiation, etc.), such as the lighting
module 300 and/or the power supply unit 600.
[0015] The lighting system 100 preferably removably mounts to a
lighting fixture or socket, preferably mounted within a ceiling
(e.g., as a downlight), but can alternatively permanently or
transiently mount to any other mounting point, such as a track
lighting fixture or any suitable light fixture. The fixture or
socket is preferably electrically connectable to a primary power
source xx (e.g., power grid, wall power, etc.), by which the
lighting system 100 preferably receives and powers the lighting
system components through the power supply unit 600. However, the
lighting system 100 can directly connect to the primary power
source xx (e.g., via power terminals), be wirelessly connected to
the primary power source (e.g., receive wireless power), or be
otherwise electrically connected to the primary power source xx.
The lighting system 100 can additionally or alternatively function
to provide backup power (e.g., emergency power) in the event of
power cessation (e.g., during an emergency, a blackout, etc.).
[0016] In operation, the lighting system 100 operates based on
control instructions received from a device 800. The device 800
preferably communicates with the lighting system 100 to control
lighting system operation, receive information, data, or
instructions from the lighting system 100, or otherwise interact
with the lighting system 100. The lighting system 100 can
additionally or alternatively function to provide a wireless
network extension for the local area network or for secondary
lighting systems 100 within a common venue (e.g., as a mesh node, a
gateway, a repeater, a failover connection, etc.), and/or to add
connected functionality (e.g., remote controllability) to a
non-connected lighting module (e.g., a lightbulb). However, the
lighting system 100 can operate automatically, or operate in any
suitable manner.
2. Example
[0017] In one example, lighting system operation is controlled
based on instructions and/or data received from the device 800. As
shown in FIG. 2, the data can be wirelessly received by the
wireless communication module 400 from the device 800 (e.g., via a
LAN, mesh network, etc.), and be processed by the onboard computing
system 500, wherein the computing system 500 controls operation of
the light emitting elements 340 based on the instructions. The
instructions can be received from a user at the device 800, be
automatically generated by the device 800 (e.g., based on auxiliary
information, such as data received from a second connected system),
or be otherwise generated. In another example, information
originating from the lighting system 100 can be processed by the
computing system 500 and transmitted back to the device 800 through
the wireless communication module 400.
[0018] In an example shown in FIG. 3, the lighting system 100 is a
downlight fixture and is configured to install into a recessed hole
820 in a mounting surface 840 (e.g., a ceiling) and preferably
proximal ceiling insulation 860. The downlight can include: a
housing module 200 including: a thermally conductive first housing
end 220 (e.g., a heatsink) preferably extending beyond the length
of the insulation 860, and opposing an RF-transparent second
housing end 240; a lighting module 300 mounted to (and thermally
connected to) the first housing end 220 opposing the second housing
end 240, wherein the facing 370 is preferably exterior to the
mounting surface 840; and a wireless communication module 400
(e.g., a radio or transceiver; a WiFi chipset; etc.) arranged
within the housing interior 260 cooperatively defined by the first
and second housing ends. The first and second housing ends also
cooperatively define a housing exterior 280 and a longitudinal axis
120, wherein the lighting module 300, the first housing end 220,
and the second housing end 240 are coaxially aligned along the
longitudinal axis 120. The wireless control module 400 includes an
antenna 420, and is arranged within the housing interior 260 with
the antenna 420 proximal and/or encapsulated by the second housing
end 240.
[0019] In this example, as shown in FIG. 4, the downlight can
include a computing system 50o and a power supply unit 600, wherein
the wireless control module 400, computing system 50o, and the
power supply unit 600 can be arranged on the same circuit board 640
(e.g., PCB). The common circuit board is preferably located in the
housing interior 240, but can alternatively be located within the
reflector, mounted to the first end of the housing, or otherwise
arranged. In a specific example, the wireless control module 400
and the computing system 500 can be integrated together on a first
circuit board 140 (e.g., LCM), wherein the first circuit board is
preferably arranged proximal or mounted to a secondary circuit
board (e.g., power board 640).
[0020] In this example, as shown in FIG. 5, the housing module 200
can additionally include a set of air flow channels 250 thermally
and/or fluidly connecting the housing interior 260 with the ambient
environment. The air flow channels 250 are cooperatively defined by
the first and second housing end, and radially extend from the
housing interior 260, through the housing wall thickness, to the
housing exterior 280. As shown in FIG. 6, the downlight can
optionally include an insulative sleeve 270 within the housing
interior 260 that mounts the wireless communication system and/or
other heat-generating components (e.g., power converter, processing
unit, common circuit board, etc.). The insulative sleeve 270 can:
mechanically protect the internal components (e.g., wireless
communication system, power converter, processing unit, etc.),
thermally connect the internal components to the air flow channels
250, and/or thermally insulate the thermally conductive first
housing end 220 and/or lighting module components from the internal
components.
[0021] In this example, the downlight can additionally include: a
facing 370 mounted to the first housing end 220; a mounting
mechanism 390 attached to the facing 370 (e.g., spring clips). The
downlight can optionally include a swivel body 350 that is
statically mounted to the housing module 200 (e.g., the first
housing end 220, such as the exterior of the first housing end 220)
and rotatably mounted to the facing 370 (e.g., the facing
interior), which enables the downlight body (e.g., the components
encapsulated by the housing) to rotate relative to the facing 370
and/or mounting surface. An exploded view of this specific
embodiment is shown in FIG. 8.
[0022] In a specific example, the downlight can be 4 inches
wide.times.4 inches deep.times.4.17 inches tall (e.g., 105 mm),
with a 3.54 inch cut out. In this specific example, the downlight
can be configured to fit into a 90 mm cut out. However, the
downlight can have any suitable dimensions.
[0023] The lighting system 100 can be used with a set of devices
800, which function to transmit control instructions to the
lighting system 100 and/or receive lighting system data from the
lighting system 100. The device 800 is preferably a remote device
(e.g., not connected to the same communication network or LAN as
the lighting system 100), but can alternatively be a local device
(e.g., connected to the same communication network or LAN as the
lighting system), a device directly connected to the lighting
system 100 (e.g., via a wired connection, a LAN hosted by the
device 800 or lighting system 100, etc.), or be otherwise situated.
The device 800 can be a server system (e.g., associated with a
lighting system management entity, the lighting system
manufacturer, a third party intermediary, etc.), a smartphone,
tablet, computer, or be any suitable device.
3. Benefits
[0024] Variants of the lighting system 100 can confer several
benefits over conventional lighting systems. First, by using modern
light emitting elements 340, such as LEDs, variants of the lighting
system 100 can decrease power consumption, increase lighting system
lifespan, and, in some variants, reduce the cooling requirement for
the light emitting elements over conventional lighting solutions.
This results in reduction of costs, which is desirable to
consumers. Furthermore, some variants of the lighting module 300
may include additional components such as a reflector, a diffusor,
or a swivel body, which function to control desired lighting
effects (e.g., lighting patterns, dynamic lighting, rotational
lighting).
[0025] Second, by incorporating a wireless communication module
400, variants of the lighting system 100 can enable remote
individual and/or group control of lighting without physical or
manual user input (e.g. power provision via a switch) to present
instructions to the light emitting elements 340. The wireless
communication module 400 can additionally enable the information
routing, remote controllability, or any other suitable
communication between one or more user devices with one or more
connected or unconnected (e.g., conventional) lighting systems that
are in operation. Furthermore, the wireless communication module
400 can provide connectivity infrastructure capability in a light
fixture form factor, which can be installed into a commercial or
residential building. This can enable a building to include
built-in connectivity infrastructure (e.g., wireless internet
routers, nodes, network extenders, etc.) without the need for
additional components, or the need to house such additional
components in building compartments (e.g., network closets).
[0026] Third, incorporating a the wireless communication module 400
into the lighting system 100 enables remote individual and/or group
control of lighting systems 100 without utilizing centralized
control (e.g., of power provision via a switch) or additional
hardware (e.g., a control hub) to transmit instructions to the
light emitting elements 340. An all-in-one connected lighting
fixture may be more desirable to consumers due to ease of use and
reduced number of separate components. The onboard wireless
communication module can further enable interaction with and/or
control the lighting system using voice control (e.g., via Alexa
integration, Google Home integration, etc.). Furthermore,
incorporating an onboard computing system 500 (that converts the
remote control instructions into lighting system control
instructions) into the lighting system 100 may improve performance
and capability of operation (e.g., advanced or dynamic lighting
effects, faster responses to sensor triggers, etc.), enable data
storage (e.g., energy use and operational history), or enable more
rapid provision of feedback to the user.
[0027] Fourth, variants of the lighting system 100 incorporating a
power supply unit 600, preferably including a battery 620, can
provide backup power to the lighting system components when power
provision from the primary power source xx has ceased (e.g., when
an electrically connected light switch is in an off or disconnected
position). For example, the power supply unit 600 can power
on-board digital memory, such that settings for light emitting
element operation can be stored and retrieved. In a second example,
the power supply unit 600 can power the wireless communication
module 400, such that wireless or wired communication with the
lighting system 100 is enabled despite primary power cessation. In
a third example, the power supply unit 600 can power the light
emitting elements 340, such as during an emergency event.
[0028] Fifth, incorporation of additional sensors 700 that can
sense features of an ambient environment (e.g. motion, sound) can
provide context-responsive lighting. For example, in variants
including motion sensors, human presence can be detected and light
selectively emitted in regions in response to human presence
detection (e.g., motion detection, user device connection to a
shared LAN, etc.). In another example, in variants including one or
more microphones, voice control processing can be performed onboard
(e.g., the computing system 500), remotely (e.g., by a connected
computing system), or in any other suitable manner.
[0029] Sixth, some lighting system configurations can manage the
thermal properties of the lighting system 100. For example, some
arrangements of higher heat output and lower heat output components
within the lighting system 100 can confer benefits over
conventional systems. In particular, the higher heat output and
lower heat output components can be strategically arranged about
the housing module 200 to generate heat gradients that facilitate
natural convection. In one example, the higher heat output
components, such as the light emitting elements 340, can be
arranged above the lower heat-output components and/or
heat-sensitive components.
[0030] In another example, some lighting system configurations
thermally protect heat-sensitive components, such as LEDs, from
heat-generating components, such as the power converter, processor,
and wireless communication system. In particular, these lighting
system variants separate the heat-sensitive components (e.g., LEDs)
from the heat-generating components with a heatsink, which cools
the heat-sensitive components (e.g., by arranging the
heat-sensitive components on the opposite side of the heatsink from
the heat-generating components). Some variants can further promote
cooling by having heatsinks that extend beyond the thermal
insulation of the mounting surface (e.g., regulatorily-required
ceiling insulation). Some variants can further thermally protect
the heat-sensitive components by including a thermally insulative
layer between the heat-generating components and the heatsink
(e.g., the sleeve 270).
[0031] Other variants can obtain the benefits of the aforementioned
thermal separation while still enabling low-EMI wireless
communication. In particular, these variants can include an
RF-translucent (or transparent) second housing end, and arrange the
antenna of the wireless communication module within the second
housing end. In the specific example wherein the lighting system is
a downlight, this would place the antenna within the ceiling
headroom. The inventors have discovered that this antenna placement
can be acceptable, particularly when the lighting system is
connected to grid power. In particular, low signal receptivity,
high packet loss, high SNR, or other connectivity problems can be
resolved, in some variants, by dynamically increasing or otherwise
adjusting the power supplied to the wireless communication
system.
4. System
[0032] The housing module 200 of the lighting system 100 functions
to mechanically protect, enclose, or retain the lighting system
components. The housing module 200 also functions to provide
structural support and integration of any components of the system
into a single unit, for example, to provide a mounting point for
the lighting module 400. The housing module 200 also functions to
thermally manage heat generated by the lighting system components.
For example, the housing module 200 can conduct heat from the
components to the ambient environment, to a heat transfer fluid 101
(e.g., cooling fluid, such as a coolant, phase change material, or
ambient air), or to any other suitable cooling medium.
[0033] The housing module 200 preferably defines a cylindrical
prism with a circular base, but can alternatively be rectangular
prismatic, trapezoidal prismatic, or be any suitable volumetric
shape. The housing module 200 preferably includes a perimeter
(e.g., perimeter of the base, perimeter of the body), but can
alternatively define an edge (e.g., interface between the base and
a sidewall, etc.), or any other suitable feature. The diameter of
the housing module 200 is preferably sized according to a
standardized fixture diameter (e.g., four inches, six inches) but
can alternatively be sized according to any suitable diameter or
dimension. The length of the housing module 200 is preferably sized
according to a regulatory headroom limitation (e.g., a vertical
space limitation between the visible ceiling and a floor above the
ceiling, a regulation limiting the depth that a light fixture can
project vertically into a ceiling space, etc.) but can
alternatively be any suitable length. For example, the length
(e.g., height) of the housing module 200 can be between 50 mm-120
mm, 100 mm, 105 mm, or be any suitable length.
[0034] All or a portion of the housing module 200 is preferably
thermally conductive. Different portions of the housing module 200
preferably have different thermal conductivity values, but can
alternatively have the same thermal conductivity value. For
example, all portions of the housing module 200 can be thermally
conductive, or a subset of the housing module 200 can be thermally
insulative, have different thermal properties (e.g., different
thermal conductivity values), or have any other suitable thermal
property. Thermally conductive housing module portions are
preferably made from metal (e.g., aluminum alloys, copper alloys,
stainless steel, etc.), but can alternatively or additionally be
made from diamond, composites (e.g., AlSiC, dymalloy, etc.),
metal-coated plastics, or any other suitable material. Thermally
insulative portions or portions with low thermal conductivity can
be made from polymers (e.g., plastics), ceramics, foam, or any
other suitable material.
[0035] In one variation, the first housing end 220 has a first
thermal conductivity value, and the second housing end 240 has a
second thermal conductivity value equal to or less than the first
thermal conductivity value. However, the second thermal
conductivity value can be higher than the first thermal
conductivity value, dynamically vary as a function of the first
thermal conductivity value, or be otherwise related to the first
thermal conductivity value.
[0036] All or a portion of the housing module 200 is preferably
transparent to a set of RF (radiofrequency) wavelengths, which can
reduce EMI (electromagnetic interference). The RF-transparent
housing portions preferably have low loss and/or low diffraction
(e.g., a low dielectric constant, such as that of glass,
fiberglass, phenolic resins, PVC), but can alternatively have high
loss, high diffraction, or any other suitable property. Different
portions of the housing module 200 can have different
RF-translucency values, but can alternatively have the same
RF-translucency values. All or a portion of the housing module 200
can be transparent to the same or different RF frequencies or
wavelengths. For example, a portion of the housing module 200 can
be substantially transparent (e.g., with less than 20% loss, 10%
loss, 5% loss, etc.) to frequencies and/or wavelengths used by
wireless communication standards (e.g., IEEE 802.11, ISO/IEC
18000-3, etc.), such as the 2.4 gigahertz, 5 gigahertz, 5.8
gigahertz, or 13.56 megahertz radio bands. However, the housing
module 200 can have any other suitable transparency to any other
suitable set of radio frequencies (e.g., 20 kHz to 300 gHz).
RF-transparent housing module portions can be made from polymers
(e.g., plastics) glass, resins, or any other suitable material. The
housing portions that are RF-transparent are preferably different
from the housing portions that are thermally conductive, but can
alternatively be the same portions. RF-opaque portions or portions
with high RF loss and/or diffraction can be made from polymers
(e.g., Teflon.TM.), metals, or any other suitable material.
[0037] In one variation, the first housing end 220 has a first
RF-transparency value, and the second housing end 240 has a second
RF-transparency value equal to or higher than the first
RF-transparency value. However, the second RF-transparency value
can be lower than the first RF-transparency value, dynamically vary
as a function of the first RF-transparency value, or be otherwise
related to the first RF-transparency value.
[0038] The housing module 200 preferably includes a first housing
end 220 and the second housing end 240, but can alternatively or
additionally include any other suitable housing component. The
housing module 200 is preferably constructed from two separate
pieces (e.g., a first housing end piece and a second housing end
piece), but can alternatively be formed from a single piece that is
cast, molded, machined, printed, or otherwise manufactured.
[0039] The first and second housing ends preferably cooperatively
define a housing interior 260 that receives a portion of the
wireless communication module 400 and the power supply unit 500,
and can optionally include openings for electrical, antennae,
and/or thermal feedthroughs at either end.
[0040] The first housing end 220 of the housing module 200
functions to mount the lighting module 300, and can optionally
function as a thermal regulator for the lighting system components.
In particular, the first housing end 220 functions to cool
heat-generating components such as the light emitting elements 430.
The first thermal conductivity value (e.g., K-value) is preferably
higher than 0.024 W/mK, more preferably between 50 W/mK and 1000
W/mk, but can alternatively be lower or be any suitable value.
Additionally or alternatively, the first housing end 220 can have a
first thermal resistivity value (e.g., higher than, equal to, or
lower than the second thermal resistivity value of the second
housing end 240). The first thermal resistivity value (e.g.,
R-value) is preferably lower than 1.00 hrft2.degree. F./Btu, but
can alternatively be higher. The first end can be formed from metal
(e.g., aluminum, copper, steel, gold, composites, etc.), but can
alternatively be formed from thermally conductive polymers (e.g.,
polymers including heat-conductive additives or coatings, such as
graphite carbon fiber, aluminum nitride, boron nitride, or metals,
or any other suitable thermally conductive material. In one
variation, the first housing end 220 is preferably a thermally
conductive heat sink.
[0041] The first housing end 220 preferably has a height (and/or
length) that is greater than the facing height and/or greater than
the regulatory insulation height (e.g., specified by building code
for geographic region). In one example, the combined height of the
facing and heat sink is greater than the regulatory insulation
height (e.g., exceeds 10 mm, 20 mm, and between 10 mm and 40 mm,
etc.). However, the first housing end 220 can alternatively can
have any suitable height.
[0042] In one variation, the first housing end 220 is an open-ended
cylindrical prism with solid walls. In a second variation, the
first housing end 220 includes a set of radial fins extending away
from the lighting module substrate 420. In a third variation, the
walls of the first housing end 220 define crenellations or teeth
extending parallel the longitudinal axis, towards the second
housing end, from the perimeter of the cylinder base. The length of
the teeth, including the base, is preferably at least 30 mm, but
can alternatively be of any suitable length. The spacing between
adjacent teeth can be between 1 mm-30 mm wide, 5 mm wide, 10 mm
wide, be a predetermined percentage of the housing perimeter (e.g.,
5%, 10%, etc. per space or in total), or have any suitable
dimensions. The spacing preferably extends along the length of the
teeth, but can alternatively extend partway along the tooth length
(e.g., wherein the teeth can be connected at a distal end), or be
otherwise related to the teeth. However, the first housing end 220
can be otherwise configured.
[0043] The first housing end 220 is preferably positioned adjacent
and thermally connected to the light emitting elements 430 and/or
mounted to the lighting module substrate 420, but can be otherwise
arranged (example shown in FIG. 5). In this variation, the
substrate is a more efficient thermal conductor than other
components surrounding the light emitting elements 430, but can be
a less efficient thermal conductor, or have any suitable relative
thermal conductivity.
[0044] The first housing end 220 preferably opposes and adjoins the
second housing end 240 (example shown in FIG. 6), but can be
otherwise arranged. The first housing end 220 and the second
housing end 240 are preferably coaxially aligned along longitudinal
axis 120, but can alternatively be aligned along a different axis
(e.g., a lateral axis, rotational axis, etc.), aligned offset from
each other, or otherwise arranged.
[0045] The second housing end 240 functions to couple to the first
housing end 220, and cooperatively defines housing interior 260 to
retain components, such as the wireless communication module 400,
computing system 500, and the power supply unit 600. The second
housing end 240 (e.g., end cap) can optionally provide an
RF-translucent housing segment for low-interference wireless
transmission and/or reception. The second housing end can
additionally function to thermally couple to heat-generating
components, such as the power supply unit 600, or any other
suitable component, and conduct heat from the components to the
remainder of the housing 200.
[0046] In one variation, the second housing end is shaped as a
cylindrical prism open at one end opposing the first housing end.
However, the second housing end 240 can be otherwise
configured.
[0047] Housing module components formed from plastic can be
preferred in some variations to reduce electromagnetic interference
with the antenna 320, which is preferably positioned closest to the
second housing end 240. In one variation, the second housing end
240 is RF-transparent and has a second thermal conductivity value
that is preferably equal to or less than the first conductivity
value of the first housing end 220. Specifically, the second
housing end is formed from a thermally conductive polymer with a
thermal conductivity value 10-50 times higher than a base
thermoplastic (e.g., 10-100 W/mK),100-500 times higher than a base
thermoplastic (e.g., 10-100 W/mK), or has any other suitable
thermal conductivity. However, the second housing end 240 can have
any other suitable set of thermal and/or RF properties.
[0048] In some variants, the first and second housing ends
cooperatively define a set of air flow channels 250 along the
housing exterior 280. The set of air flow channels 250 of the
housing module 200 function to create a thermal path for passive
cooling between the housing interior 260 and the housing exterior
280. The cooling fluid is preferably gaseous, but can alternatively
be liquid. The cooling fluid can be air (e.g., from the ambient
environment), water, coolant, phase change material, or any other
suitable cooling fluid. The channels 250 preferably extend along
the longitudinal axis of the housing module 200 (e.g., extend in
parallel with the longitudinal axis 120), but can alternatively
extend in a spiral about the housing longitudinal axis, extend
perpendicular to the longitudinal axis (e.g., arcuately), or extend
in any other suitable configuration. The channels 250 are
preferably evenly distributed about the housing exterior 280, but
can alternatively be unevenly distributed. In one variation, the
channels 250 extend longitudinally along the housing (example shown
in FIG. 5). In a second variation, the channels 250 extend
arcuately, about the housing. In a third variation, the channels
250 extend radially throughout the housing thickness. However, the
channels 250 can be otherwise configured.
[0049] The set of channels 250 can be formed from perforations
(e.g., through holes or openings) in the housing module 200. The
channels 250 can be formed by the first housing end 220 or the
second housing end 240, or otherwise formed. In one example, the
channels 250 can be formed when one or both ends have a set of
teeth, wherein the spacing between the teeth forms the channels.
The channels 250 are preferably cooperatively defined by the first
housing end 220 and the second housing end 240, but can
alternatively be defined by a sleeve 270, a through hole formed
within the first housing end 220, within the second housing end
240, within the sleeve 270, or defined in any other suitable
component. The cooling channel walls can be smooth or textured
(e.g., includes bumps, divots, grooves, protrusions, fins, etc.).
In one variation, the set of channels is formed by thermally
conductive segments defined in the housing module (e.g., metal bars
embedded within the housing). In one example, the housing module is
formed by a solid piece with patterned geometries or
inconsistencies (e.g., grooves) in the surface. In a second
example, the first housing end has a different thermal conductivity
from the second end of the housing.
[0050] The housing module can additionally include a sleeve 270,
which functions to support, receive, and/or mechanically protect
components. The sleeve 270 can optionally function to thermally
isolate components within the housing interior 240 from the heat
sink, such as the circuit board xx, the wireless communication
module, the computing system, and the power supply unit, or any
other suitable functionality. The sleeve is preferably thermally
insulative (e.g., has a thermal conductivity value of less than 10
W/mK, etc.), but can alternatively be thermally conductive.
However, the sleeve can have any other suitable thermal property.
The sleeve can be made from plastic (e.g., a polymer), ceramic,
organic material (e.g., paper), or any other suitable material. The
plastic can be thermally insulative (e.g., be a thermoplastic or
thermoset, such as polysulfone, PEET, or any other suitable
thermally insulative plastic). The sleeve is preferably a separate
piece from the housing 200, but can alternatively be an integral
(singular) piece with the housing.
[0051] The sleeve 270 is preferably a cylindrical prism with a
single open end and a radius that does not exceed that of the
housing module 200. The sleeve 270 preferably has a length that is
less than or equal to the housing length, but can alternatively
have any suitable length. In one variation, the sleeve 270 extends
along the length of the housing interior. In a second variation,
the sleeve 270 extends from the first housing end partway along the
air channel length. The sleeve 270 is preferably coaxially arranged
with the housing module 200 (e.g., along the longitudinal axis),
but can alternatively be offset from the housing module 200, or
otherwise arranged. However, the sleeve can alternatively have any
other suitable configuration and/or arrangement.
[0052] In one embodiment, shown in FIG. 7, the sleeve 270 is
preferably positioned within the housing interior 260 proximal the
first and second ends of the housing, and encloses the power supply
unit 500, computing system 600, and the wireless communication
module 300 therein. The sleeve may alternatively or additionally
include a mounting point for components within the housing, and/or
provide an alignment guide such as grooves, protrusions, or other
alignment features to adjoin the first and second end assembly. The
sleeve 270 can additionally include retention features for the
circuit board, such as hooks, grooves, clips, threading, or any
other suitable retention feature. The sleeve can additionally or
alternatively include any other suitable features. The sleeve may
additionally or alternatively function to define air flow channels
with the first and second housing ends. In one example, the sleeve
is fluidly connected to the ambient environment through the spacing
of the heat sink teeth.
[0053] In another example, as shown in FIG. 9 the spacing between
the sleeve and the interior wall of the housing forms an air gap
275 through which air flow can occur (to form enclosed cooling
channels).
[0054] The lighting module 300 of the lighting system 100 functions
to emit electromagnetic radiation (e.g., light). The lighting
module is preferably controlled based on instructions received from
the wireless communication module 400 and computing system 500, but
can be otherwise controlled. The lighting module includes a
substrate 320 mounted to light emitting elements 340, and can
optionally include a reflector 310, a diffuser 330, a swivel body
350, a facing 370, and a mounting mechanism 390. However, the
lighting module can include any suitable set of components.
[0055] The lighting module 300 is preferably mounted to the first
housing end 220, but alternatively is mounted to the reflector 310,
wherein the reflector 310 is mounted to the first housing end 220.
The lighting module 300 is preferably mounted to a planar face of
the first housing end 220 (e.g., a face opposing the second housing
end 240), but can alternatively be mounted to a side of the first
housing end 220, the second housing end 240, or to any suitable
portion of the housing. The lighting module 300 is preferably
mounted to the housing exterior 280, but can alternatively be
mounted to the housing interior 260.
[0056] The lighting module 300 is preferably electrically connected
to and powered by the power supply unit 600, but can be otherwise
powered. The lighting module 300 is preferably electrically
connected to and controlled by the computing system 50o, but can be
otherwise controlled. The lighting module is preferably
communicably connected to the wireless control module 400 (e.g.,
via the computing system 500), but can be otherwise connected to
the user device. In variants where the lighting module 300 is
connected to components within the housing module 200, the lighting
module 300 is preferably connected by a wired connection, but can
alternatively be connected by a pin connector, be wirelessly
connected, or be otherwise connected. Physical connections (e.g.,
wired connections, pin connectors, etc.) preferably extend through
a hole in the housing module 200 (e.g., a hole in the first housing
end 220, a hole in the flat face of the first housing end 220,
etc.), but can alternatively wrap around the housing exterior 280,
be defined by the housing module 200 (e.g., wherein the housing
module 200 includes an integrated connector), or be otherwise
defined.
[0057] The substrate 320 of the lighting module 300 functions to
thermally connect light emitting elements 340 to the housing module
200, more preferably the first housing end 220 but alternatively
any suitable portion of the housing module 200. The substrate 320
preferably includes a first face (first substrate face), which
mounts the light emitting elements 340, and a second face (second
substrate face), which is in contact with the housing module 200.
In one variant, the substrate is a metal core printed circuit board
(MCPCB), but alternatively can be any suitable circuit board. The
geometry of the substrate is preferably rectangular, but can
alternatively be circular, triangular, or any other suitable shape.
The substrate can optionally include thermal paste (e.g., arctic
silver) or other thermal contact material on the second face to
increase the thermal contact between the second face and the first
housing end 220. However, the substrate can be otherwise
configured.
[0058] The light emitting elements 340 function to emit light of
pre-determined wavelengths or a range of wavelengths, and may be
operated individually, as a group. In a preferred embodiment, a
plurality of light emitting elements 340 mounted on a substrate 320
are arranged between the facing 370 and the housing module 200 and
connected to the housing module 200 by way of a heat sink at the
first housing end 220; however, a single lighting element may also
be used, and the light emitting elements 340 can be arranged
anywhere within the lighting system 100. The light emitting
elements 340 preferably emit visible light (e.g., white light,
colored light), but can alternatively or additionally emit
invisible light (e.g., light outside of the visible spectrum), such
as IR or UV. In one variation, the light emitting elements 340 are
LEDs, but alternatively they can be any type of light emitting
source, such as halogen or CFL bulbs. The light emitting elements
340 can be individually indexed and controlled by the computing
system 500, indexed and controlled in sub-groups (e.g., in pairs),
indexed and controlled as a group, or otherwise indexed and
controlled. In an example wherein the light emitting elements 340
include both visible-light emitting elements and invisible-light
emitting elements, the visible-light emitting elements can be
controlled as a singular group, and the invisible-light emitting
elements can be controlled as a singular group. However, the light
emitting elements 340 can be otherwise configured and/or
controlled.
[0059] The reflector 310 of the lighting module 300 functions to
modify the optical characteristics of the light emitted from the
light emitting elements. For example, the reflector 310 can focus
light, collimate light, diffuse light, reflect light, or otherwise
adjust the optical characteristics of the light. For example, the
reflector 310 can create a beam angle between 450 and 90.degree., a
beam angle of 60.degree., or any suitable beam angle. In operation,
light emitted from the light emitting elements 340 is reflected
from the inner surfaces of the reflector 310, travelling down the
length of the reflector 310 from the first open end to the second
open end and passes through the diffuser 330. The reflector 310 can
also cooperatively encapsulate light emitting elements with the
diffuser 330. The reflector 310 is preferably a parabolic
reflector, but it can be any other suitable shape, such as a
conical frustum. The reflector 310 preferably includes two opposing
open ends: a first open end encircling the light emitting elements
340 (e.g., wherein the light emitting elements and/or substrate are
nested within the reflector 310 interior through the first open
end), and a second open end preferably closed off by the diffuser
330. The radius of the first open end is preferably less than the
radius of the second open end, but can alternatively be equal to or
larger than the radius of the second open end. Alternatively, the
reflector 310 can include a single open end and a single closed end
opposing the open end, wherein the light emitting elements 340 can
be mounted to the interior face of the closed end (e.g., face
proximal the closed end). However, the reflector 310 can be
otherwise configured. The reflector 310 is preferably aligned with
the longitudinal axis 120 of the housing module 200, more
preferably coaxially aligned with the longitudinal axis 120, but
alternatively can be aligned offset the longitudinal axis 120, or
otherwise arranged. In a variation, the first open end of the
reflector is aligned coaxially with and mounted to the first
housing end 220, and surrounds the light emitting elements 340 and
the substrate 320, such that the light emitting elements 340 are
directed towards the second open end of the reflector 310. In this
variation, the second open end of the reflector 310 is preferably
capped by the diffuser 330. However, the reflector 310 can be
otherwise arranged.
[0060] The diffuser 330 of the lighting module 300 functions to
modify the intensity distribution of light emitted from the light
emitting elements 340 (e.g., diffuse light, scatter light,
attenuate light, etc.). The diffuser 330 can also cooperatively
encapsulate the light emitting elements 340 with the reflector 310.
The diffuser 330 is preferably a thin disc with a radius that is
complementary to that of the open end of the reflector 310, but can
be otherwise configured. The diffuser 330 is preferably uniformly
translucent; however the diffuser 330 may alternatively have a
translucence gradient, or have a translucency that is dynamically
adjustable by a control module (e.g., electrochromatic diffuser).
The diffuser 330 is preferably aligned with the longitudinal axis
120 of the housing module 200, more preferably coaxially aligned
with the longitudinal axis 120, but alternatively can be aligned
with the reflector 310, be arranged within the emission path of the
light emitting elements 340, or otherwise arranged. In a preferred
embodiment, the diffusor 330 is mounted to the reflector 310 at the
second open end of the reflector, but it can alternatively be
mounted at any other location that is across from the light
emitting elements 340 and opposing the housing first end 220.
[0061] The lighting module 300 can optionally include a facing 370.
In an example wherein the lighting system 100 is a downlight, as
shown in FIG. 3, the facing 370 of the lighting module 300
functions to cooperatively create an aesthetically pleasing
interface with, and/or mount the lighting module to, a mounting
surface 840 (e.g., ceiling, wall, lamp holder). The facing 370 is
preferably an annular ring, but can alternatively be square or any
suitable shape. The facing 370 preferably includes a facing height,
wherein the facing height can be less than, equal to, or taller
than the mounting surface's insulation thickness (e.g., more than
10 mm, 15 mm, etc.). The facing 370 can optionally define: a facing
perimeter, an interior surface, an exterior surface, and/or any
other suitable feature. The facing 370 is preferably concentrically
aligned with the housing module 200 (e.g., coaxially aligned with
the housing longitudinal axis 120), but can be offset or otherwise
arranged. The facing 370 is preferably mounted to the first housing
end 220, but can alternatively be connected to the lighting module
300, be mounted to a swivel body 350 that rotatably mounts the
facing 370 to the housing module 200, mounted to the second housing
end 240, or be mounted to any suitable portion of the housing
module 200. In a first variant, the first housing end 220 nests
within the facing 370, wherein the facing 370 mounts to the first
housing end 220 (e.g., an arcuate surface of the first housing end
220). In a second variant, the facing 370 encloses the lighting
module 300 and is attached to an edge of the first housing end
220.
[0062] The lighting module 300 can optionally include a mounting
mechanism 390. The mounting mechanism 390 of the lighting module
300 functions to affix the lighting system 100 to the mounting
surface 840, more preferably within a recessed hole, opening, or
other enclosed space within a mounting surface (e.g., a wall,
ceiling, etc.), but alternatively to any other suitable mounting
surface or feature. In an example wherein the lighting system 100
is a downlight, the mounting mechanism 390 preferably provides a
radial force between the facing 370 and the inside edge of a hole
in a mounting surface, but alternatively can be any suitable
mechanism to statically mount the lighting system 100 into a
lighting fixture. The mounting mechanism 390 is preferably arranged
on the exterior surface of the facing, perpendicular to the plane
in which a radial bevel extends from the facing 370. However, the
mounting mechanism 390 can be mounted to the facing interior
surface, to the housing exterior 280 (e.g., to the first housing
end 220, to the second housing end 240, etc.), or to any suitable
portion of the lighting system 100. The mounting mechanism 390 may
be evenly or unevenly distributed along the edges of the facing
370, but can alternatively be connected to any part of the housing
module 200. The mounting mechanism 390 can include a set of spring
clips, hooks, or any suitable mounting mechanism. The mounting
mechanism 390 can include two mechanisms (e.g., two clips), or any
suitable number of clips, which generate an opposing linear force
against a surface of the mounting.
[0063] The lighting module 300 can optionally include a swivel body
350. The swivel body 350 functions to rotate the light emitting
elements relative to the facing about a rotational axis that is
perpendicular to the longitudinal axis 120 (e.g., pitches the light
emitting elements relative to the facing), and additionally or
alternatively enables the housing to move relative to the facing
370 on an axis that extends through the facing 370. Alternatively,
the swivel body 350 can rotate the light emitting elements 340
and/or housing module 200 about the longitudinal axis 120, or
otherwise enable lighting system actuation. Preferably, the swivel
body 350 can rotate the entire lighting system 100, sans facing
370, relative to the facing 370, but can alternatively rotate only
the light emitting elements 340, the substrate 320, and the housing
module 100, or rotate any suitable component of the lighting module
300. The swivel body 350 can enable .+-.10.degree. pitch, between
.+-.0.degree. and .+-.90.degree. pitch, or any suitable angular
range of motion.
[0064] The swivel body 350 can define an opening to receive the
reflector 310, diffuser 330, the light emitting elements 340, and
the lighting substrate 320, but can be otherwise configured. The
swivel body 350 preferably encircles the reflector 310 and the
light emitting elements 340, while mounting the facing 370 to the
first housing end 220. In one embodiment, the swivel body 350 is
rotatably connected to the facing 370 (e.g., at the facing interior
surface) at two points along an axis perpendicular to the
longitudinal axis 120, and is rigidly connected to the housing
module 200 (e.g., at the first housing end 220, the second housing
end 240, etc.) at an interface along the edge of the swivel body
350 (e.g., by fasteners, adhesive, molded clips). Alternatively,
the swivel body 350 can be attached to the housing module exterior
280 (e.g., for track lighting). The swivel body 350 can include: a
pin and groove mechanism, a pin and hole mechanism, a gimbal (e.g.,
passive or active), a motor, and/or any other suitable mechanism of
attachment. The swivel body 350 can be manually actuated, actively
controlled by the motor (e.g. based on control instructions
received from the user device by the wireless communication module
400), or otherwise controlled.
[0065] In one example, variants of the lighting system 100 can
determine and store the rotational and/or geographic position of
the lighting module 300 relative to an external reference point
(e.g., relative to the facing 370). The relative orientation and/or
position of the lighting module 300 can subsequently or
contemporaneously be used to determine the position of a desired
illumination target relative to a reference point on the lighting
system 100, and to determine each lighting element's position
relative to the desired illumination target. As such, the lighting
system 100 can be capable of directional lighting using only the
light emitting elements 340 and a wireless communication module
400, using only the light emitting elements 340 and an ambient
light sensor, using the swivel body 350, using only the wireless
communication module 400, or any other suitable combination of
components.
[0066] The wireless communication module 400 of the lighting system
100 functions to receive, translate, and forward instructions from
the user device to the lighting system 100 to control light output
via the onboard computing system 500. The wireless communication
module 400 can additionally or alternatively transmit data to the
user device and/or execute any other suitable communicative
processes or actions. The instructions are preferably communicated
to the lighting system 100 using a wireless network communication
protocol (e.g., Zigbee; Bluetooth; NFC; WiFi, such as 802.n11b,g,n;
cellular; etc.), but can be communicated over a wired protocol
(e.g., powerline, Ethernet, etc.) or otherwise communicated. The
wireless communication module 400 preferably connects the lighting
system 100 to a LAN network using a SSID, password, security keys,
or other credentials stored by on-board memory. Additionally or
alternatively, the wireless communication module 400 can directly
connect to an auxiliary device (e.g., through a network hosted by
the wireless communication module 400 or auxiliary device), or
otherwise connect to the user device. In a first embodiment, the
network communication protocol is WiFi, but alternatively, the
wireless signals can be transmitted via a protocol that can operate
using either short-range or long-range signals, or any other
suitable wireless network communication protocol.
[0067] The wireless communication module 400 is preferably in
bidirectional communication with the computing system 50o, but can
have one-directional communication with the computing system 500
(e.g., provide information to the computing system 500), or
otherwise connected to the computing system 500. The wireless
communication module 400 is preferably arranged on the same chip or
circuit board 140 as the computing system 500, but can
alternatively be arranged on a separate board.
[0068] The wireless communication module 400 includes one or more
antennas 420 (e.g., dipole antenna, fractal antenna, whip antenna,
monopole antenna, patch antenna, etc., and can optionally include
one or more: radios (e.g., RF transceiver), chipsets (e.g., a
system-on-chip), or any other suitable set of components. In a
first variant, the antenna 420 and the radio are collocated on the
same chipset. In a second variant, the antenna 420 and radio are
distributed across the housing module 200 (e.g., mounted to
separate portions of the lighting system) and connected by a set of
wires. In one example of this variant, the radio can be positioned
opposite the antenna 420, proximal the first housing end 220,
wherein a wire extends between (and electrically connects) the
radio and the antenna 420 through openings in the first housing end
220. However, the antenna 420, radio and/or any other suitable
portion of the wireless communication module 400, can be arranged
in any suitable fashion.
[0069] All or a portion of the wireless communication module 400 is
preferably arranged inside the housing interior 220, but can
alternatively be arranged on or integrated with the housing
exterior 280, the lighting module substrate 320, the reflector 310,
the diffuser 330, the facing 370, or otherwise arranged. The
antenna 420 is preferably positioned proximal the RF-transparent
housing portion (e.g., the second housing end 240), but can
alternatively be arranged distal the first housing end 220 (e.g.
distal a metal heat sink), along, within, or integrated to the
sides of the housing module 200, the housing exterior 280, outside
the enclosure cooperatively formed by the first housing end 220 and
the second housing end 240, on the lighting module substrate 320,
on the reflector 310, or arranged in any other suitable
configuration in which the antenna 420 is communicatively
accessible by a wireless signal (e.g., arranged near a non-metal
wall of the housing).
[0070] The wireless communication module 400 is preferably coupled
to (e.g., electrically connected to) the computing system 50o and
the power supply unit 600, but can be connected to the lighting
module 300 or any other suitable component. In one variation, shown
in FIG. 4, the wireless communication module 400, the computing
system 500, and the power supply unit 600 are arranged and
collocated on the same circuit board (e.g., power board 640).
Alternatively, each component can be arranged separately within the
housing interior 260 or be grouped together in any suitable
manner.
[0071] The computing system 500 of the lighting system 100
functions as a centralized information processing center for all
data inputs and outputs to the lighting system 100, and functions
to receive, translate, send, and store user instructions, or any
other suitable data management function. In one variation, the
computing system 500 interprets received instructions and/or
collected sensor data, generates instructions for controlling light
emitting elements 340 (e.g., based on the received instructions),
sends and transmits instructions, or performs any other suitable
computing task. The computing system 500 is preferably in
communication with all elements of the lighting system 100,
including, but not limited to: the lighting module 300, the
wireless communication module 400, power supply unit 600, and the
sensors 700.
[0072] The computing system 500 can include one or more processors
(e.g., GPU, CPU, LCM, etc.) such as that described in U.S.
application Ser. No. 14/937,774 filed 10 Nov. 2015, which is
incorporated herein in its entirety by this reference, or any other
suitable processor.
[0073] The computing system 500 can optionally include manual
(e.g., non-automated, non-remote) control inputs (e.g., buttons,
switches) to control system actions or operational state (e.g.,
turn off, turn on, reset system). In a specific example, depressing
a reset button flush mounted within the facing 370 of the lighting
system 100 for a time period (e.g., 2 seconds) reboots the
computing system 500, upon which a tone is generated from an
internal speaker. In another specific example, a status light
emitting element positioned and or visible at the facing 370 of the
lighting system 100 emits green light when the wireless
communication module 400 is functioning normally and connected to
the network, yellow light when it is powered but unconnected, and
no light when the it is unpowered. The control input(s) can,
additionally or alternatively, be otherwise configured.
[0074] The computing system 500 can optionally include memory for
onboard data storage (e.g., flash memory, RAM, etc.), but it can
also store data in a cloud database or any suitable data storage
repository. Additionally or alternatively, the computing system 500
can be used in combination with other lighting system 100
components and/or external elements to implement the methods and/or
processes described in U.S. application Ser. No. 14/512,699 filed
on 13 Oct. 2014, U.S. application Ser. No. 14/542,312 filed on 14
Nov. 2014, and U.S. application Ser. No. 14/720,180 filed on 22 May
2015, each which is incorporated herein in its entirety by this
reference. The computing system 500 can, additionally or
alternatively, be otherwise operated or otherwise operate the
lighting system 100.
[0075] The computing system 500 is preferably arranged onboard the
lighting system 100, but can alternatively or additionally be
remote from the lighting system (e.g., cloud computing system,
central control hub). The computing system 500 is preferably
arranged within the housing interior 260, but can alternatively be
arranged along the housing exterior 280, or otherwise arranged. The
computing system 500 is preferably arranged proximal the second
housing end 240, but can alternatively be arranged proximal the
first housing end 220, on the lighting module substrate 320 (e.g.,
along the first substrate face, between the substrate 320 and the
first housing end 220, etc.), or otherwise arranged. The computing
system is preferably aligned parallel the longitudinal axis 12o;
however, the computing system 500 can alternatively be arranged in
any suitable manner relative to other components. In one
embodiment, the computing system 500 is integrated on the same
circuit board 140 (e.g., LCM2 chip coupled to a PCB) as the
wireless communication module 400, but can additionally or
alternatively be integrated into the power supply unit 600 or
otherwise arranged. In one example, the computing system 50o and
wireless communication module 400 are arranged on a common board
(e.g., circuit board 140) or chipset, wherein the common board
(e.g., circuit board 140) or chipset is mounted to the power supply
unit's board 640 (e.g., IC, PCB, etc.). The circuit board 140 is
preferably thermally isolated from the first housing end 220 (e.g.,
heatsink) by the housing sleeve 270 or by an airgap defined between
the first housing end 220 and the housing sleeve 2o; but can
alternatively be thermally connected to the first housing end 220
(e.g., by the housing sleeve 270, by the housing module 200, etc.)
or otherwise thermally connected to the first housing end 220.
[0076] Upon installation of the lighting system 100 into an
electrical fixture or socket (e.g., recessed electrical box), the
power supply unit 600 functions to deliver power to powered
components, such as the lighting module 300, the wireless control
module 400, and the computing system 500; and/or to convert grid
power to power suitable for light emitting elements (e.g., target
power, lighting power). The power supply unit 600 can additionally
or alternatively power any other suitable portions and/or
components of the lighting system 100. The power supply unit 600
includes one or more electrical connectors 620 (e.g., wires), and
can optionally include a circuit board (e.g., power board 640, PCB,
etc.), one or more batteries, one or more power converters (e.g.,
transformers, voltage converter, etc.), and/or any other suitable
power components. The power supply unit 600 is preferably arranged
within the housing interior 260, wherein the housing ends have
feedthroughs (e.g., openings, holes) for electrical connectors 620
to pass through to reach other components; however, the power
supply unit 600 can alternatively be arranged outside the housing
module 200 or otherwise located. Additionally and or alternatively,
the power supply unit 600 can transfer power to powered components
of the lighting system 100 wirelessly, without the use of
electrical connectors 620, or in any suitable manner.
[0077] The electrical connectors 620 function to connect the
lighting system 100 to a primary power source (e.g., external
power, building power, powerline power, mains power), and can
additionally function to provide electrical power directly to
powered components of the system. Alternatively, the electrical
connectors 620 can connect to one or more converters (e.g., AC-DC
converters) and/or power regulators to convert the wall power to a
suitable format (e.g., AC or DC, low voltage, medium voltage, high
voltage, etc.) for delivery to powered components. Any number of
electrical connectors 620 can be configured in any suitable power
and/or data connector form factor (e.g., USB, barrel plug, etc.).
At least one electrical connector is preferably accessible from
outside the housing module 200 (e.g., via a feedthrough or set of
feedthroughs in the housing module 200), in order to facilitate
connection between the power source and the lighting system 100;
alternatively, connection to the power source can be made to an
electrical connector 620 residing outside the housing module 200
(e.g., via power pins that extend beyond the second housing end
240).
[0078] The power supply unit 600 can optionally include a power
board 640 that functions to mount and/or support other components
of the lighting system. In one embodiment, the wireless
communication module 400 and the computing system 500 are
integrated on the power board 640. In a second embodiment, the
wireless communication module 400 and the computing system 50o are
mounted to the power board 640. The power board 640 is preferably
thermally insulated (or isolated) from the lighting module 300
and/or first housing end 220 by an airgap 275, sleeve 270, or other
thermal insulation, but can alternatively be thermally connected to
the first housing end 220. The power board 640 is preferably
passively cooled, but can alternatively be actively cooled. The
power board 640 can be cooled using the sleeve 270, the set of air
flow channels 230 defined by the housing exterior 280, a coolant,
or otherwise cooled.
[0079] The power supply unit 600 may optionally include one or more
batteries (e.g., Li-ion, NiMH, etc.) that function to provide an
additional or secondary power source, and additionally or
alternatively, to provide surge protection to avoid damage to
sensitive electrical components within the lighting system 100. In
some variants, the batteries are preferably electrically connected
to powered components of the lighting system 100, and can be
arranged inside or outside of the housing module 200. The batteries
are preferably thermally connected to a heat sink, such as the
first housing end 220 (e.g., in variants wherein the first housing
end 220 is a heatsink); but can alternatively be thermally isolated
from the heatsink. The batteries are preferably removable or
rechargeable, but can be otherwise configured. In some variants,
each powered component of the lighting system 100 can have a
corresponding battery with output characteristics (e.g., voltage,
current, etc) tailored to that component; for example, the lighting
module 300 can be connected to a lithium-ion polymer battery
adapted for powering LEDs, and the computing system 500 can be
connected to a button-type, low voltage, long lasting battery.
Alternatively, the lighting system 100 can include a single battery
for all or a portion of its components.
[0080] The lighting system 100 can optionally include sensors 700,
which function to sample parameters of the ambient environment and
can be used to collect environmental, contextual, or user input
data and provide them to the computing system 500. The sensors are
preferably communicatively coupled to the computing system 500 by
any suitable connection (e.g., by data transfer connection, wired
connection, wireless connection, etc.). Variants of the system may
include any number or arrangement of optical sensors (e.g., CCD
arrays, cameras), acoustic sensors (e.g., microphones), position
sensors (e.g., encoders, etc.), pressure sensors (piezoelectrics),
temperature sensors (e.g., thermocouples), or kinematic sensors
(e.g., gyroscopes, accelerometers), or any other suitable sensors,
arranged within the system depending on sensor purpose. In a first
variant, ambient light sensors can be arranged on an outer surface
of the lighting system 100 (e.g., outside of the facing 370, on the
lighting module substrate 320, etc.) directed towards the space
intended to receive emitted light. In a second variant, orientation
sensors can be arranged along the longitudinal axis 120, to measure
the angle of the housing relative to the facing 370. In a third
variant, acoustic sensors may preferably sample the ambient
environment through a manufactured hole or multiple holes in the
housing module 200 or facing 370 of the lighting system 100.
However, sensors can otherwise be arranged.
[0081] Although omitted for conciseness, the preferred embodiments
include every combination and permutation of the various system
components and the various method processes, wherein the method
processes can be performed in any suitable order, sequentially or
concurrently.
[0082] As a person skilled in the art will recognize from the
previous detailed description and from the figures and claims,
modifications and changes can be made to the preferred embodiments
of the invention without departing from the scope of this invention
defined in the following claims.
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