AU2016253590B2 - Power over ethernet led light fixtures - Google Patents

Abstract

The LEDlightixtures the prevent invention desbed heenare weatherproofThey can beused utdorsand even hosed down withwater and waterand dust and otheraiularmatterwinotingresstheampfi tre, damagqig the internalcomponentsRatigsof b5a P8r generally scentfor theposandencosurestoensuretheymeetthis criterTheenosuresareaso impactsistant to a ratingofKi Weatherprof and impactresistant casingsare comrnerayavailableand includegrommetsgastandothermeansfecuringcasingandpntecting the omponentsfromimpacts inoneembodimentanonimintaiedPOELED light xture (300) is housed in an I67 weatherproof enclosure (302) so that the i ght fixtuecanbe used outdoors andwithintheharshenvironmentofa guiding sit Enclosure 302) has P67 ratedRJ45 plug (304) orreceivinga powertn emetconnection and a secondRJ45pug(306rdaisychaining thenext Ight fittingAn between-theoRi45epugsis anEthenetTadator (308and spanofEthemetcable(310)ThesecondEthemetconnection comingout of adaptor(30)ispassedto POEsplitter (312) which strips out theED curenover a pair of lowvtagewiresandpassesthepowertoLED strips (314). 02/112016 ..... ..... - .- 30 ................ .. .... .. . .. . .. . .. ... . -- - -- - --- - - -- -- -- - - -- - 316 4TA Fig,, 2 Ax - 302 ... . .. . . . . .. . . . .. .. ...... ... . .. . . . ... .. .. ..... .. ... .. .. ... .. .. ... .. .. .... ....... ..---... .. .. .1 . .. ...... .. ... ... ... . --------- 302 ---- ----- -------- .5- -'4 -- /-. -4 -½ .................. ....... ........................... ........... .. ..............

Description

The LEDlightixtures the prevent inventiondesbed heenare weatherproofThey can beused utdorsand even hosed downwithwater and waterand dust and otheraiularmatterwinotingresstheampfi tre, damagqig the internalcomponentsRatigsof b5a P8r generally scentfor theposandencosurestoensuretheymeetthis criterTheenosuresareaso impactsistant to a ratingofKi Weatherprof and impactresistant casingsare comrnerayavailableand includegrommetsgastandothermeansfecuringcasingandpntecting the omponentsfromimpacts inoneembodimentanonimintaiedPOELED light xture (300) is housed in an I67 weatherproof enclosure (302) so that the ight fixtuecanbe used outdoors andwithintheharshenvironmentofa guiding sit Enclosure 302) has P67 ratedRJ45 plug (304) orreceivinga powertn emetconnection and a secondRJ45pug(306rdaisychaining thenext IghtfittingAn between-theoRi45epugsis anEthenetTadator (308and spanofEthemetcable(310)ThesecondEthemetconnection comingout of adaptor(30)ispassedto POEsplitter (312) which strips out theED curenover a pair of lowvtagewiresandpassesthepowertoLED strips (314).

02/112016

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AUSTRALIA Patents Act, 1990 ORIGINAL COMPLETE SPECIFICATION

APPLICANT/S: Electrical Engineering Solutions Pty Ltd (ACN 094 435 659)

INVENTORS: BOEMI, Norman Samuel

ADDRESS FOR SERVICE: Peter Maxwelland Associates Level56 60 Pitt Street SYDNEY NSW2000

INVENTION TITLE: POWER OVER ETHERNET LED LIGHT FIXTURES

DETAILS OF ASSOCIATED AU 2015 904 505 - 4 November 2015 APPLICATION NOS: AU 2015 905 273 - 18 December 2015 AU 2016 901 102 - 23 March 2016 AU 2016,903050- 3 August 2016 AU 2016 903 888 - 26 September42016

The following statement is a fulldescription of this invention including the best method of performing it known to us:-

MOBILE POWER.DATA ANDULGHTING SYSTEM

TECQHN11,C`AL FELD The present invention relates principally to driverless LED light fixtures powered over an Ethernet connection. BACKGROUND ART The driverless LED light fixtures of the present invention are preferably used for providing temporary lighting solutions in a construction zone setting. However, the invention is not limited to powering LED lights in such a setting. LED lights are almost invariably driven by LED drivers. An LED driver is an electrical device which regulates the power to an LED or a string (or strings) of LEDs. An LED driver responds to the changing needs of the LED, or LED circuit, by providinga constant quantity of power to the LED as itselectrical properties change with temperature. An LEDdriver is a self-contained power supply which has outputs that are matched to the electrical characteristics of the LED or LEDs. LED drivers may offer dimming by rneans of pulsewidth modulation circuits and may have more than one channel for separatecontroi of different LEDs or LED arrays, The power level of the LED is maintained constant by the LED driver as the electrical properties change throughout the temperature increases and decreases seen by the LEDor LEDs.The conventional view is that without the proper driver, the LED may become too hot and unstable, therefore causing poor performance or failure LED drivers corne in two major types. A constantcurrent LED driver varies the voltage across an electronic circuit allowing the device to maintain a constant electric current.This thus ensures that, no matter the variation in voltage,the current deliveredto LEDs does not change. In contrast to constant current power supplies, constant voltage LED drivers have afAxed voltage of 48VDC or 24VDC supplied to the circuit. The LED's or LED strips utilisedwill dictatewhether a constant voltage or a constant current driver isrequired. As mentioned above, LED lamps incorporating LED drivers offer the ability to control the output of the LED from intensity to colour. Conventionally this has been carried out by expensive and complicated control systems that operate on the(010V, DALI, DSIand other protocols that were developed for incandescent and fluorescent lighting. More recently with the advent of POE powered LED lamps, control of the LEDs in the lamp can be controlled via IP over ethernet enabled LED drivers. The problem with such lamps and associated drivers is that they are ill suited for the building industry and outdoor environments. Componentry such as the POE LED driver adds costs and reduces the reliability of a bank of lamps driven by them. Many of the features provided by LED lights driven by such drivers are often not required. For instance colour changing is not a requirement for temporary LED lighting in construction sites. Complex IP based networks are even more troublesome and likely to result in lights that are difficult to configure and network together with appropriate IP enabled lighting controllers. Accordingly it is an aim of the present invention to provide POE powered LED lights for use in the construction industry that substantially ameliorates some of the problems of the prior art. SUMMARY OF INVENTION Ina first aspectof the invention there is provided a POE LED light fixturehaving an ethernet port for powering the LEDs that form part of the ethernet LED light fixture.

Preferably the at least one Ethernet LED light fixture isa driverless light fixture which is powered directly from the DC power delivered by the ethernet

connection.

Still more preferably the at least one Ethernet LED light fixture is a maintained light fixture comprising an inverter, battery and one or more LEDs and wherein the inverter is configured to supply power from the battery when there is a lossof power supplied by the ethernet connection, Alternatively the at least one Ethernet LED light fixture is a sustained

light fixture comprising an inverter, battery at least one powered LED and at least one emergency LED and wherein the inverter is configured to supply

02/11/2016 power from the battery to the emergency LED when there is a loss of power supplied by the ethernet connection.

Preferably the LED or LEDs are arranged in constant voltage LED

strips. More preferably the LED or LEDs are arranged in an at least one constant current LED strip and wherein the fixture further comprises a DC/DC step down convertor for producing a constant current power supply for the at

least oneconstant current LED strip.

Preferably the at least one Ethernet LED light fixture utilises a POE

splitter for isolating the DC power for powering the light fixture. Still more preferably the at least one Ethernet LED light fixture's ethernet port provides 8 wires, the four positives and the four negatives being

joined together to form a simple positive and negative DC power supply for

powering the ethernet LED light fixture. Preferably the at least one Ethernet LED light fixture comprises at least two light fixtures and where at least one provides a second ethernet jack for

daisychaining and powering the second.

Still more preferably a stringofat east 5 Ethernet LED light fixtures are daisychained via the second ethernet jacks of the light fixtures and wherein the

daisychained fixtures are connected to a POE power source device. Preferably the string of LED light fixtures is has a PIR in line between

the LED light fixtures and the power source device such that the light fixtures

are only powered when motion is detected in proximity to the PIR. Preferably the at least one Ethernet LED light fixture takes the form of

any of a batten, a downlight, an emergency exit or floodlight form factors.

02/11/2016

According to a second aspectof the invention there is provided a method of providing a temporary lighting system to a construction sitewherein the method comprises: (i) connecting plurality of weatherproof etheret cables to a POE power source device; (ii) connecting the ethernet cables to a plurality of driverIess LED light fixtures via weatherproof RJ45 ports on theED light fixtures. Preferably the LED light fixtures have at least two weatherproof RJ-45 ports adapting the LED light fixtures to be daisychained together to provide a string of LED light fixtures. BRIEF DESCRIPTION OF THE DRAVIINGS Preferred features, embodiments and variations of theinvention may be discerned fromthe following Detailed Description which provides sufficient information forthose skilled in theart to perform the invention. The Detaied Description is not to be regarded as imiting the scope of the preceding Summary of the Invention in any way. The Detailed Description will make reference to a number of drawings as follows: Fig 1 is a schematic of anon-maintainedEthernet POElighting fixture component of a system of the second aspect of the invention. Fig 2 is a schematic of amaintained Ethernet POElighting fixture component of a system of the second aspect of the invention. Fig 3 is a schematic of a sustained Ethernet POElighting fixture component of a system of the second aspect of theinvention. Fig 4 is a schematic of a second embodiment ofa sustainedPOE Ethernet light fixture componentof a system of the second aspect of the invention. Fig|5is a schematic of a further embodiment ofanonmaintainedPOE Ethernet lighting fixture component of a systemof the second aspect of the invention. Fig 6 is a schematic of a lightfixture array utilising the light fixture of Fig 24.

02/11/2016

Fig 7 is a schematic of a T junction box component of a system of the second aspect of the invention. Fig 8 is a schematic of a light fixture array usingtheTjunctionboxof Fig 26. Fig 9 is a depiction of abatten style sustained lightfixture component of a system of the second aspect of the invention in full illumination mode. Fig 10 is a depiction ofthe light fixture of Fig 28 in emergency mode" Fig 11 is a depiction of anemergencylight form factor. Fig 12 is further depiction of an emergency light form factor. Fig 13 isastill further depiction ofanemergencyight form factr Fig 14 is a further depiction of an emergency light form factor. Fig 15 is a depiction of anembodiment of a downlightlight fixture form factor. Fig 16 is a depiction ofanembodimentofa downiightfixture form factor. Fig 17 is a depiction of a front view of a floodlight light fixture form factor. Fig 18 is a depiction of a rear side view of a floodlight light fixtureform factor. Fig 19 is a schematic of a PIR component of systems of the second aspect of the invention. DESCRIPTION OF EMBODIMENTS In the present specification and claims (if any), the word 'comprising' and its derivatives including 'comprises' and 'comprise' include each of the stated integers but does not exclude the inclusion of one or more further integers. Reference throughout this specificationto 'one embodiment' or'an embodiment' means that a particular feature, structure, or characteristic described connection with the embodiment isincluded in at least one embodiment of the present invention. Thus, the appearance of the phrases 'in one embodiment' or 'in an embodiment' in various places throughout this specification are not necessarily all referring to thesameembodiment.

02/11/2016

Furthermore,the particularfeaturesstructures, or characteristics may be combined in any suitable manner in one or more combinations. In compliance with the statute, the invention has beendescribed in language more or less specific to structural or methodical features. It is to be understood that the invention is not limited to specific features shown or described since the means herein described comprises preferredformsof putting theinvention into effect. The invention is, therefore, claimed in any of its forms or modifications including combination of features from alternate embodiments of the invention. References made to constructions sites should also betakenasa reference to other situations or places where they may not be sufficient infrastructure to provide certain services and where the device of the present invention willhave some application. In particular concert sitesandsites of other culturalactivities, particularly if put on in a greenfield situation, would benefit from the use of the presentinvenon. Power Over Ethernet Technologes Many devices that need poweron a constructionsite do not need a high voltage powersource toperform their function. The solution to many of the abovestated risksassociated with high voltage ables involves replacingthem with lowvoltage ethernet cabling. Accidentally cutting an ethernet cable carrying low voltage current will not cause electrocutionor injury. Ethernet cables are network cables that are used to connect one network device to another. They were initially developed to connect computers via RJ-45 ports. They contain 4 twisted pairs of wires. Ethernet cables have been around since the 1980's. It wasn't until the late 1990's that companies began experimenting with systems that involved sending power down one or more of the twisted pairs and data on the remaining twisted pairs so that a connected device could be simultaneously powered and networked via the single power over Ethernet (POE or PoE) connection. A device that provided a POE connection is known as a power source device or power source unit. They may include POE switches or routers that provide both thenetworkingand power in the one device. Theseare quite

02/11/2016 common today. In addition to POE switches and routers arethe POE injectors or mid spans. These devices take a non-POE Ethernet connection (data) and a source of DC power to be consumed by the connected device and combines them into a POE connection. In the present specification a reference to a POE power source includes both POE switches and routers and also non-PoE switch/router when combined with one or more PoE Injectors/midspan devices that introduce power into non PoE ethernet connections. Various standards have been ratified over the years which has fostered the uptake of the technology by peripheral manufacturers and other technology providers. One of the main features of POE connections to be agreed upon are the total available power per POE connection. The now outdated PoE standard IEEE 8023af-2003 (which is herein incorporated by reference) only provided up to 15.4W per connection. The maximum power supplied per port in a system compliant with IEEE 802.3at-2009 is 30W. Future standards such as 802.3bt will allow up to 100W per connection to be provided by utilising all four twisted pair cables within the ethernet cable. IEEE standards referred to herein are hereby incorporated by reference. In the meantime as discussed below, there are various nascentand/or non-standardsystems that provide considerably higher powered connections of up to 150W per connection. Companies such as Cisco provide a proprietary switch (Cisco UPOE) capable of delivering 60W per connection using two twisted pairs within each cable. Phihong USA Corporation produces midspans orPoE injectors that work on an "Ultra PoE" rating in which upto60W-80W are delivered per connection. Phihong also manufacture "Mega PoE" midspans or PoE injectors that provide up to 90W PoE. For example the 150W POE INJ 1000 - DinX Gigabit POE injector/splitter sold by Tycon Power Systems operates as both a midspan injector and splitter where up to 150Wcan be inserted or extracted frorn an Ethemet network connection. Tycon Power Systems frorn Bluffdale Utah also produce a mini PoE switch that takes a single PoE connection and divides the power supplied by it over 4 outlet PoE portswith a maximum outlet power rating of 35Wper port. As

LED lightcan draw relatively small amounts of power (as little as 10W-20W), a single connection from a high powered POE system such as the one provided by Tycon Power's 150W injector can power a plurality of LED lights using essentially one length of cable. It is important when using the high powered POE devices that a compatible cable is utilised, In the presentinvention the minimum standard cable that can be incorporated are Cat 5, Cat e, Cat 5+Cat 6, Cat a, Cat 7 cables.More preferablyCat Se - Cat 7 cablesareemployed. Lighting is perhaps the most important example of what can be powered by high powered PoE connections. New generations oflow voltage lighting are more than adequate frorn a luminosity and brightness perspective to provide lighting for construction sites: By replacing high voltage cablingfor lighting alone, the present invention immediately provides an improvement and safety advantages over the prior art. By providing lighting using ethernet the present invention provides several advantages over the prior art: Safer- low voltage power, when appropriate, is a safer alternative to high voltage power; Flexible - star and serial configuration of connected devices allows for a flexible arrangement of light fixtures. More efficient - (i) lessduplication when data connectivityis also required; (ii) cables can extend in any direction 100m allowing for a large area to be serviced by the onedevice (31,415m2). In some cases the high powered devices such as those 150W per port mid spans from Phihong can extend this range to 150m, increasing the area servicesto up to 70685m2. Despite conventionalconsiderations teachingaway from driverless implementationsfor powering LED lamps it has been found that the LED lifespan and efficiencies arenot detrimentally affected by dispensing with the proprietary or specific LED drivers recommendedfor any given LED stripor LED. On a most general level the LED driver is dispensed.Thus in thecase of the lamps of the present invention, there is no assigning of IP addresses or

02/11/2016 communicating withthe laps via IP or any othercomplicated protocol whichis otherwise available when powering the lamp via POE. The LED light fixtures of the present invention described herein are weatherproof. They can be used outdoors and even hosed down with water and water and dust and other particular matter will not ingress the lamp fixture, damaging the internal components. Ratings of between IP56 and IP68 are generally sufficient for the ports and enclosures to ensure they meet this criteria. The enclosures are also impact resistant to a rating of IK10. Weatherproof and impact resistant casings are commercially available and includegrommets, gasketsandother means of securing casing and protecting the components fromimpacts. Referring to Figs 1 to 5 there are depicted several versions of POE driverless, constant voltage LED lights. Broadly they can be divided into two categories, emergency lights (both maintained and sustained) and non emergency lights. Turning to Fig 1 there is depicted in schematic form a 20W daisychainable non-maintained POE LED light fixture 300 according to the present invention. The non-raintained POE LED light fixture 300 is housed in an IP67 weatherproof enclosure 302 so that the light fixture can be used outdoors and within the harsh environment of a builldingsite. Enclosure 302 has IP67 rated RJ45 plug 304 forreceiving a powering Ethernet connection and a second RJ45 plug 306 for daisychaining the next light fitting. In between the two RJ-45 plugs is an Ethernet T adaptor 308 and a span of Ethernet cable 310. The second Ethernet connection coming out of T adaptor 308 is passed to POE splitter 312 which strips out the DC current over a pair of low voltage wires and passes the power to LED strips 314. In an alternate embodiment (not shown) T adaptor 308 and POE splitter 312 are replaced with an RJ45 junction box. The junction box receives two RJ-45 plugs and connects them, and instead of a third RJ-45 plug as in the case of the T-adaptor, the junction box has the facility to connect individual wires to each wire of the Ethernet connection passing between the two RJ-45 plugs. These 8 wires are separated into + and - wires and joined so as to form a two wire DC current source that is

02/11/2016 then directly connected to LED strips. In a furtheroptional erbodinentthe second RJ-45 plug 306 can be removed together with T adaptor308 making the light a single RJ-45 connection light fitting. In that embodiment, POE splitter 312 can be used or a similar Ethernet junction box can be used to strip the wires outof the Ethemet connection coming from RJ-45 plug 304 to directly connect to the LED strips as previously described. In all of these embodirents 1OW 48V strips can be usedin parallel or alternatively two 1.W 24V LED strips can be used in series (not shown). Fig 2 shows LED light 320 which is a maintained version of the Ethernet LED light xture of Fig 20, It has the same components except that it also has an inverter 316 (DF268H LED lamp Automatic Emergency Device Dengfeng Ltd) and battery 318 (DFDY LR 7.2Hr 2500mAh). Inverter:316 detects when power from the Ethernet connection ceases and for charging wherein the battery 318 and inverter 316 operatein conjunction to provide emergency power when POE power is cut. Testing the unitinvolves turning off the power to the light to see if theemergencybattery power illuminates the LED strips 314, albeit at a reduced brightness. The same optional embodiments apply in that second RJ-45 plug can be removed together with the T junction as wel as optionally removing the POE splitter and feeding the LED strips with power derived by joining all of the positive and negative wires together to form a two wire power supply, Fig 3 shows a LED light fitting 330 which is a sustained version of the light fitting depicted in Fig 21. In this embodiment the inverter 316 powers emergency LEDs 322 when Etheret power is detected as having been cutoff rather than the main LEDs 314. Testing these lights involves the same process as turning off the power to the light to see if the emergency LEDs 322 shine. Turning to Fig 4 there is depicted maintainedemergencylight 340. It is similar to LED light 320 but for the additional test button 324 and LED 326. When test button 324 is depressed it breaks thecircuit and the Ethernet power is no longer supplied causing the LED light to turn off. However if inverter316 and battery218 are working properly, the LED strips 314 will continue to shine The test button and LED light can be used with any of the sustained or maintained LED rights 320 and 330 discussed above. For ore advanced testing capabilities an inverter having self test capabilities should be employed such as the inverter DF518T manufactured by Shenzen Dengfeng Power Supply Company. It is programmed to monitor and the fitting and discharge the battery at predetermined intervals and then 'report' pass or failurevia a signal on the LED indicatingcharging light. Again the other optionalembodiments also apply here including removing the second RJ-45 plug and also removing the POE splitter and simply hard wiring the 4 positives and 4 negative wires of the Ethernet cable into the power supply of the LED strips 314. Ethernet LED ights 300,320 330 and 340 all employ constant votage LED strips. If it is desired to provide lights utilizing constant current LED strips this can beaccommodatedwithin the designs depicted in Figs 1 to 4 by includingan upstream DC-DC step down convertor which converts thesource of power to power the LED strips 314 (and 322) into a source of constant current as opposed to constant voltage. Again thesecan be provided with or without the second RJ45 and without the POE splitterwhen the wires of the cable arehard wired to form a DC power source. Turning to Fig 5 an alternative embodiment of a daisychainable LED light fixture350 is shown. The main difference to LEDlight fixture 300 from Fig 20 is thatit contains an extra Ethernet T adaptor 308and an extra P65 rated Ethernet port 352 mounted in the housing 302 so that each light fixture has one power input and two power outputs. This allows for the LED light fixture 350 to be arranged in a branching pattern as set out in Fig 6. As an alternative to using LED light fixtures 350, one or more T box's 354 can be provided as depicted in Fig 8. The T box has three IP65 rated Ethernet ports 356 contained within an IP65 rated enclosure that has inside of it, an Ethernet T adaptor 308. Together with daisychainable LED light fixtures 300 (or any variations thereof, not shown), they can form a branched array of LED light fixtures as shown in Fig 8. Strings of LED lights (300, 320 or 330) can be daisychained together when powered by a high powered POE connection as each typicallight consumesaround 20W ofIpower which for fivelights sits within the 150W

02/11/2016 power budget made available through high powerPOEconnections utiising the Tyconpower POE injectorlsplitter previously described. More lightscan be added until the power budget is exhausted. Six 20W lightswouldfitcomfortably within the budget. Strings of LED lights with self activating sensor contain the same string of five LED lights but with a PIR sensor wired into the device upstream of the lights. When motion is detected current flows through to the five lights. When motion is not detected the power to the lights is cut. The mechanism by which this is achieved is depicted in Fig. 19 It depicts a high powered POE connection 1520 being passed to RJ45 jack 1570 which brings the Ethernet connection into enclosure 1572. The Ethernet connection is then passed to POE splitter 1574 which splits the incoming connection into DC wires 1576 which carry the high power DCcurrent and Ethernet connection 1578. The DC wires 1576 are hard wiredto the power inputs of R 1562 (EBDSPIRPRMVFC-LV from MyStart Pty Ltd) via power wires1580 which power the PIR. When the PIR 1562 senses motion, it outputs a signal along sensor wires1582which are then connectedtorelay1684inenclosure 572When the relay is provided an active signal it opens a circuit between the high power DC wires 1576 and the DC input wires to POE injector 1586.POE injector 1586 takes the DC power supplied and the Ethernet connection 578|and combines them for outputvia RJ45 jack 1588and through to LED light fixtures on Ethernet connection 1590. Ethernet LED lights 300, 320, 330, 340 and 350 can all be produced in a number of different form factors including emergency exit lights. In Fig 9 a sustained LED light fixture 330 is shown in normal operation. It takes the form of a 4 foot cylindrical batten style light. In Fig 10 it is shown with power cut off, with only the emergency LEDs shining. Fig 11, 12, 13 and 14 depict alternative form factors, particularly suited for sustained and maintained emergency lighting where the light must take the form factor of an emergency exitilight Figs 15 and 16 show downlght form factors which are also suitable for sustained and maintained components. The low bay floodlights depicted in Figs 17 and 18 have a constant current LED bank consuming 40W of power. The same form factor can be used

02/11/2016 with two or three banks of LEDs consuming 80Wand 120W in total which is under the 150W that can be delivered by the Tycon power injectors. Each bank of LEDs would have a DC-DC step down convertor upstream of each LED bank. The low bay floodlightdepicted in Figs 17 and 18 is rated for outdoor use with an IP rating of at leastP67.

02111/2016

Claims (10)

THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS:

1. A weatherproof LED light fixture comprising - a weatherproof enclosure;

- at least one constant current or constant voltage LEDs for providing

illumination, contained within the enclosure; - at least one weatherproof RJ-45 port for receiving a CAT cable in which DC

power is carried over twisted pairs of positive and negative conductors in the

CAT cable - circuits for extracting the DC power received from the ethernet port and in the

case where constant voltage LEDs are utilised the DC power is directly fed

into the LEDs and in the case of constant current LEDs the DC power is first fed into a DC-DC step down convertor before being fed into the constant current LEDs, - the constant current or constant voltage LEDs using the DC power to

illuminate the LEDs; and

wherein the weatherproof LED light fixture is driverless and does not:

-get assigned an IP address or other network address for communicating with the LED light fixture;

wherein the LEDs are illuminated whilst there is DC Power being transmitted to the weatherproof LED light fixtures across the CAT cable.

2. The light fixture of claim I wherein the circuitry is a POE splitter.

3. The light fixture of claim 1 wherein the circuitry includes positive and negative DC power terminals created by joining each of the CAT cable's positive

conductors together and each of the negative conductors together where the DC

power is used to power the at least one constant current or constant voltage LEDs.

IV7fl/t¶f)e)

4. The light fixture of claim 1 wherein there is provided a second RJ-45 port

connected in series to the first RJ-45 port wherein the second RJ-45 port is used to

connect a CAT cable to the first RJ-45 port of a second light fixture.

5. The light fixture of any of claims I to 4 wherein the ethernet powered LED

light fixture is a maintained light fixture additionally comprising an inverter and battery and wherein the inverter is configured to supply power from the battery when

there is a loss of power supplied by the CAT cable.

6. The light fixture of any of claims 1 to 4 wherein the ethernet powered LED

light fixture is a sustained light fixture further comprising an inverter, battery and at

least one emergency LED and wherein the inverter is configured to supply power from the battery to the emergency LED when there is a loss of power supplied by the CAT cable.

7. The light fixtures of any of claims 1 to 6 wherein the light fixture further comprises at least a third RJ-45 port for connecting two LED light fixtures in a

branched configuration.

8. An LED light string comprising a plurality of LED light fixtures of claim 7 and CAT cables arranged in a straight or branched orientation wherein the LED light

string further comprises a PIR wired into an upstream portion of the LED light string,

the end that is connected the source of the DC power, and wherein the PIR is

adapted to cut power to the downstream LED light fixtures unless motion is detected.

9. A method of providing a temporary lighting system to a construction site where in the method comprises:

.4 "11 1 neIfl l

-connecting a plurality of weatherproof ethernet cables to a source of DC power; -connecting the weatherproof ethernet cables to a plurality of weatherproof

driverless LED light fixtures of any of claims I to 8;

- extracting the DC power from the PoE connection and powering the LED light fixtures with the DC power extracted from the DC power source.

10. The method of claim 9 wherein the connections between the cables and the light fixtures is made by way of weatherproof RJ-45 plugs and ports.

DATED this 17th day of June 2022

Electrical Engineering Solutions Pty Ltd Patent Attorneys for the Applicant MAXWELLS PATENT AND TRADE MARK ATTORNEYS PTY LTD

'17/flt0lfl9