5337B-AU-DI "SYSTEM AND METHOD OF RETROFITTING FLUORESCENT LIGHT FIXTURES AND LED TUBE LIGHTS THEREFOR" Field of the Invention The present invention relates to fluorescent light fixtures and batons and, in particular, to a method and system of retrofitting fluorescent light fixtures to receive LED tube lights, and an LED tube light therefor. The invention has been developed primarily for use with linear or straight fluorescent type tubes and will be described with hereinafter with reference to this application. However, it will be appreciated that the invention is not limited to this particular field of use and is applicable to other fluorescent light fixtures. Background Art Straight fluorescent light tubes have been used for many years in both home and commercial environments. Fluorescent lighting is employed on a large scale due to its recognised efficiency when compared to previous lighting elements such as incandescent bulbs. This is especially the case in commercial environments where lighting is operated continuously over extended periods. Fig. 1 shows a schematic circuit diagram of one type of prior art conventional fluorescent light fixture. In this prior art fixture, a starter element is electrically disposed intermediate one pin at each end of the fluorescent tube. The other pin at one end of the fluorescent is connected to the neutral electricity supply and the other pin at the other end of the tube is connected to the active electrical supply with a magnetic ballast disposed intermediate. The fluorescent light tubes often contain mercury. A filament at each end of the fluorescent tube is energised when the fluorescent light fixture is switched on and power is shunted through the starter circuit. This causes ionisation of gases in the fluorescent tube initiating the light production process at which time the starter circuit is opened. Once the fluorescent light tube has started,
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5337B-AU-D1 the starter circuit becomes open and electricity is supplied via the ballast at one pin at one end and directly with the neutral electrical supply at one pin at the other end. Fig. 2 is a schematic circuit diagram of a second type of prior art fluorescent light fixture in which the magnetic ballast has been replaced with an electronic or high frequency ballast which also integrates the function of the starter element. The electronic or high frequency ballast integrally provides the function of the starter shown in Fig. 1. In each type of prior art fluorescent light tube fixture, the fluorescent tubes have a pair of pins at each end and operate identically regardless of the type of fixture. The pins are configured to be received within a holder with respective electrical terminals, for example, as shown in Fig. 1 or 2. Of recent times, it has become clear that solid state lighting, such as light emitting diode (LED) based lighting devices, operate at a significantly higher level of efficiency than fluorescent lights. Being solid state based lighting, ionization of gases and the necessary electrical input is not required. As such, LED tube lights having the same external dimensions as conventional fluorescent tube lights have been developed to take advantage of existing fluorescent light fittings which are almost ubiquitous in commercial environments. The LED tube lights comprise a plurality of LED's within a typically tubular polycarbonate outer housing. The LED tube lights include a pair of pins at each end the same as in a conventional fluorescent light tube. However, in the LED tube light, the pins at end are internally shorted and the LED tube lights are configured to be connected at either pin at one end to the active electrical supply at one end and by either pin to the neutral supply at the other end. In order to install an LED tube light into an existing fluorescent light fitting, any starter element must be removed. If a magnetic ballast is used in the fluorescent light fixture, this can remain, however, this significantly reduces the operating life and the 2 5337B-AU-D1 efficiency of the LED tube light. Any electronic or high frequency ballast incorporating the function of the starter must be removed in that circumstance. It is the case that a significant amount of commercial retrofitting of the fluorescent light fittings to use LED tube lights do not result in the disconnection and removal of the magnetic ballast in that type of fixture. This occurs because of the obvious labour saving during retrofitting where the step of disconnecting/removing the ballast is omitted from the process. This disadvantageously requires LED tube lights used in such types of retrofitted fittings to include electrical suppression circuits to counter the action of the ballast. LED light tubes having such suppression circuitry is not known and a significant reduction in LED light tube lifespan and efficiency will occur. It is not expected that consumers or users who may change a non-functioning LED light tube would understand whether the tube to be replaced is an LED tube or a fluorescent tube or if the consumer does know, whether the retrofitted fluorescent light fitting has its ballast removed or how the retrofitted fluorescent fitting is modified. Without this knowledge it is reasonable to assume that the consumer may attempt to install a standard fluorescent tube. To place a fluorescent tube in a retrofitted fitting will result in the tube short circuiting. This may or may not cause the tube to explode but in either event the resultant flash and noise and possible broken glass poses a safety threat to the consumer replacing the tube. As it is normal for a ladder to be used to access the light fitting, the risk to the consumer is significant as the possibility of a fall from the ladder is real and reasonable. Further, when a fluorescent tube is placed in a retrofitted fitting, the light circuit will overload and the circuit protection device will activate and all power will be cut off and the entire lighting circuit will become inactive causing darkness. This poses a risk to the power circuit and the sudden darkness increases the risks to the consumer who is reasonably expected to be on a ladder during the replacement process. The known methods of retrofitting a fluorescent tube light fixture to receive an LED tube light are also disadvantageous so far as each end of the LED tube light is electrically live. This provides a significant electrocution hazard and is therefore 3 5337B-AU-DI undesirable. For example, during installation or removal of LED tube lights, as with fluorescent lights, it is well known that one end of a tube having exposed electrical connections often contacts with the typically metal housing of the fixture whilst the pins at the other end are still in contact with the electrical terminals in one of the light holders. It is also known that it is possible for the consumer or user installing the tube can come in contact with the exposed pins at one end of the tube whilst the pins at the other end are still in contact with the electrical terminals in one of the light holders. Genesis of the Invention The genesis of the invention is a desire to provide an LED tube light fixture, a method of retrofitting fluorescent tube light fixtures to receive LED tube lighting and an LED tube light therefor that will overcome or substantially ameliorate one or more of the disadvantages of the prior art, or to provide a useful alternative. Summary of the Invention According to a first aspect of the present invention there is provided an LED fixture configured to receive an LED tube light having a pair of spaced apart pins at each end, the pins configured to be received by conventional fluorescent tube light holders spaced apart a length corresponding to a length of the LED tube light wherein one of the holders is configured to provide an electrically active terminal for connection to one pin at one end of the LED tube light and configured to provide an electrically neutral terminal to the other pin at the same end of the LED tube light such that the fluorescent light tube holder at the other end is not electrically connected, and a fuse disposed intermediate the electrically active source and the fluorescent tube light holder active terminal. According to a second aspect of the present invention there is provided a method of providing an LED tube light fixture configured to receive a LED tube light having a pair of contact pins at each end and where the pins are configured to be received by a pair of spaced apart fluorescent light tube holders, the method comprising the steps of configuring one fluorescent light tube holder to provide an electrically active terminal and a spaced apart electrically neutral terminal for connection to respective pins at one end of the LED tube light and configuring the other fluorescent tube light holder to 4 5337B-AU-DI not be electrically connected, and disposing a fuse intermediate the fluorescent light tube holder active terminal and the active supply. According to a third aspect of the present invention there is provided an LED tube light configured to received by a pair of spaced apart fluorescent light tube holders, the LED tube light comprising a pair of spaced apart pins at each end configured to be held by fluorescent light tube holders wherein one of the pair of pins at one end is configured to be electrically connected to the active electrical supply and the other pin at that end is configured to be connected to the electrical neutral supply, and wherein the pair of pins at the other end of the LED tube light are electrically isolated from LED light elements in the LED tube light. According to a fourth aspect of the present invention there is provided a method of retrofitting a fluorescent light tube fixture having a magnetic ballast and a starter to receive an LED light tube, the method comprising the steps of: electrically disconnecting the starter and the magnetic ballast; and electrically disconnecting the terminals at one of the light tube holders; connecting a neutral electricity source to one terminal of the other light tube holder and connecting the other terminal of the light tube holder to an electrically active source; and disposing a fuse electrically intermediate the active electricity terminal of the tube holder and the active electrical supply. According to another aspect of the present invention there is provided a method of retrofitting a fluorescent light tube fixture having an electronic/high frequency ballast to receive an LED light tube, the method comprising the steps of: electrically disconnecting the ballast from the light tube holders; electrically disconnecting the terminals at one of the light tube holders; connecting a neutral electricity source to one terminal of the other light tube holder and connecting the other terminal of the light tube holder to an electrically active source; and disposing a fuse electrically intermediate the active electricity terminal of the tube holder and the active electrical supply. 5 5337B-AU-DI It can therefore be seen that there is advantageously provided an LED tube light fixture and a method of providing the fixture that eliminates accidental electrocution risks posed by known LED tube light fixtures. Furthermore, there is also advantageously provided a method of retrofitting a fluorescent light fixture to receive LED tube lighting that significantly reduces electrocution hazards over conventional retrofitted fixtures. Brief Description of the Drawings Preferred embodiments of the invention will now be described, by way of example only, with reference to the accompanying drawings in which: Fig. 1 is a schematic circuit diagram of a conventional prior art fluorescent tube light fixture; Fig. 2 is schematic circuit diagram of another conventional prior art fluorescent tube light fixture with an electronic/high frequency ballast; Fig. 3 is a schematic circuit diagram of an LED tube light fixture according to the preferred embodiment; Fig. 4 is a schematic circuit diagram of a first type of fluorescent light fixture retrofitted to receive an LED tube light according to another preferred embodiment; and Fig. 5 is a schematic circuit diagram of a second type of fluorescent light fixture retrofitted to receive an LED tube light according to another preferred embodiment, Detailed Description Referring to Figs. 3 to 5 generally, it would be appreciated that like reference numerals have been used to denote like components. In Fig. 3 there is shown the schematic circuit diagram of an LED light tube fixture 1 in accordance with a preferred embodiment. The LED tube light fixture 1 is configured to receive an LED tube light 2. Although not illustrated, the LED tube light 2 includes a plurality of LED elements and electronic control elements configured to be electrically connected to the mains alternating current power supply. The LED diode elements are encased in a polycarbonate housing and are typically mounted to a circuit board substrate or 6 5337B-AU-DI the like which also advantageously emits light directionally over a smaller area than a fluorescent tube which emits in all directions. The LED light tube 2 includes a pair of spaced apart pins 3 and 4 extending a predetermined distance from a first end 5 of the LED tube light 2. At the other or second end 6 of the LED tube light 2, another pair of pins 7 and 8 extend a predetermined distance longitudinally from the tube second end 6. Each pair of pins 3, 4 and 7, 8 are configured to be received by conventional fluorescent light tube holders 9 and 10. The tube light holders 9 and 10 are spaced apart a length corresponding to the length of the LED tube light 2. The holder 9 includes respective electrical terminals 11 and 12 which are configured to electrically connect to pins 3 and 4 respectively when the LED tube 2 is engaged with the holder 9. The terminal 11 in the holder 9 is configured to be electrically connected to the active mains electricity supply and the terminal 12 in the holder 9 is configured to be connected to the neutral mains electricity supply. That is, the mains electricity active and neutral connections are applied to pins 3 and 4 respectively in order to energise the LED light tube 2. The holder 10 configured to receiving pins 7 and 8 at the second end 6 of the LED tube light 2 is not electrically connected to any power supply. The pins 7 and 8 are merely retained by the holder 10 and power is supplied to the LED tube from the pins 3 and 4 at the first end 5. It will be appreciated that the holder 10 may include electrical terminals for connection with pins 7 and 8 respectively, however, these are not connected to any electrical supply and merely act as holders. A fuse 13 is disposed electrically intermediate the active mains electricity supply and the corresponding terminal I I of the holder 9. In alternative embodiments, not illustrated, the fuse 13 maybe integrated into the holder 9. The LED tube light fixture 1 will typically be at least partly contained within a typically metal housing for reflector arrangement. The circuit diagram of Fig. 3 also shows that an earth connection is provided to any such housing. In use, the LED tube light 2 is simply inserted into the holders 9 and 10 and power supplied. Indicia or 7 5337B-AU-D1 other indicator would most preferably be provided on the LED tube light 2 and on the holder 9 indicating which end of the LED tube light 2 is configured to be energised and also which holder 9 is configured to receive that end 5 of the LED tube light 2. Other indicia may be associated with the fixture 1, for example, a warning or instructions not to attempt to insert fluorescent light tubes. It will be appreciated that at least one switch can be integrated into the active or neutral mains electricity supply as desired. With the provision of the LED tube light fixture 1, if the LED tube light 2 is inadvertently engaged with the holders so that pins 7 and 8 engage with terminals II and 12 of the holder 9, the LED tube light 2 will be incapable of producing light. Importantly, when inserting the LED tube light 2 into the holders 9 and 10, it is not of any consequence if pins 7 and 8 or 3 or 4 come into contact with the fixture housing or a conductive surround as the pins 7 and 8 are not electrically connected and connection only occurs when pins 3 and 4 are engaged with terminals 11 and 12 at the single end 5 of the LED tube light 2. It will be appreciated that the LED tube lights 2 may be configured so that the LED tube light 2 can be energised by providing power to pins 3 and 4 or 7 and 8 at either end 5 or 6 of the tube light 2. That is, the light emitting elements (not illustrated) in the LED tube light 2 can be powered by a pair of pins at either end 5 or 6. In order to prevent the possibility of power being provided to both pins 3 and 4 and 7 and 8 simultaneously, the LED tube light 2 can include an electrical supply sensing circuit (not illustrated) configured to allow active and neutral mains electricity supply to be supplied to one set of pins 3 and 4 or 7 and 8 respectively depending on which end has pins which contact the electrical supply first. That is, if the electrical supply is sensed across pins 3 or 4, or 7 or 8, the circuit can act to isolate the pins at the other end. This will prevent difficulties if such an LED tube light 2 would be inserted into a conventional fluorescent tube light fixture as shown in Figs. I and 2. Referring now to Fig 4, there is shown a schematic circuit diagram of the retrofitting of the conventional fluorescent tube light fixture of Fig. 1. In this embodiment, the magnetic ballast 20 is either short circuited as shown or it can be removed entirely. 8 5337B-AU-DI The fuse 13 is inserted intermediate active mains electricity supply and terminal 11 of holder 9. The starter circuit 21 can be open circuited as shown or removed in its entirety. The neutral mains electricity supply is then electrically connected to the terminal 12 of holder 9 and the existing neutral connection removed from a terminal 15 of a holder 10. Any electrical connection to terminal 16 of holder 10 can also be removed if desired otherwise left in situ with the starter circuit removed or open circuited. It can be seen that the retrofitting of the fluorescent light fixture of Fig. 1 provides a circuit essentially electrically the same as that shown in Fig. 3 with the same benefits. In Fig. 5 there is shown a schematic circuit diagram of the retrofitting of the second type of fluorescent tube like fixture. In this embodiment, the high frequency ballast 22 is disconnected from terminals 11, 12, 15 and 16. The switch 23 is then rewired into the active or neutral mains electrical supply. The neutral mains electrical supply is then electrically connected to terminal 4 of the holder 9 and the active supply is connected to terminal 11 of the holder 9. A fuse 13 is disposed intermediate the active mains electrical supply and the terminal 3. The retrofitting of the fluorescent tube light fixture of Fig. 2 essentially results in the provision of a circuit electrically the same as that of Fig. 3 also providing with those benefits. The foregoing describes only one embodiment of the present invention and modifications, obvious to those skilled in the arts, can be made thereto without departing from the scope of the present invention. The term "comprising" (and its grammatical variations) as used herein is used in the inclusive sense of "including" or "having" and not in the exclusive sense of "consisting only of'. 9