LED marine luminaire

Abstract

There is described a marine luminaire LED lighting device (100) for retrofit to an existing marine luminaire (1000) comprising a gear tray (2000) and an electrical supply connection, the device (100)

Description

[0001] LED Marine Luminaire

[0002] Field of the Invention

[0003] The present invention relates to marine luminaire LED lighting devices. In particular, the present invention relates to marine luminaire LED lighting devices for retrofit to an existing marine luminaire.

[0004] Background of the Invention

[0005] There is a need for improved energy efficiency in the shipping industry. Legislation and energy costs are driving shipping companies to save energy through the adoption of LED lighting to replace fluorescent lighting.

[0006] Replacing non-LED luminaires with new LED luminaires may be expensive as luminaire enclosures are highly specialised items, often comprising watertight and impact resistance properties. Not only are new luminaires expensive, the time required to install new luminaires across a fleet of marine vessels may be operationally prohibitive. Further, replacing non-LED luminaires would create lots of mixed material waste which may be expensive to dispose of or recycle.

[0007] To address these issues, marine luminaire LED lighting devices suitable for retrofit to existing marine luminaires have been developed. Existing solutions are limited to being suitable only for one type of luminaire, e.g. one model from one brand. Accordingly, to effect a successful retrofit, fleet managers must identify what luminaires exist in their fleet, procure the necessary individual retrofit devices, and fit the retrofit devices across the fleet. For a large and diverse fleet, this is a complicated and time consuming task. Often, throughout the life of a vessel, luminaires are replaced and sometimes the replacements are not like-for-like, further complicating the identification step. Further, each retrofit device will require a different installation procedure, requiring different tools and tests, and produce different waste products, including Waste Electrical and Electronic Equipment (WEEE) which must be disposed of correctly. Hence, retrofitting luminaires in a large fleet may be expensive, inconvenient and slow.

[0008] As such, there is a need for a device to improve the process of retrofitting marine luminaires with LED lighting devices to provide energy efficient lighting to marine vessels. Objects and aspects of the present claimed invention seek to alleviate at least these problems with the prior art. Summary of the Invention

[0009] At its most general, the present invention provides a marine luminaire LED lighting device that is configured to be retrofitted into a marine luminaire. That is to say, the marine luminaire LED lighting device is configured to replace a non-LED lighting device of an existing marine luminaire to provide an LED marine luminaire. The existing marine luminaire comprises a gear tray and an electrical supply connection. The gear tray may be configured to support a non-LED lighting device, such as a fluorescent tube. By removing the non-LED lighting device from the marine luminaire, a support tray of the marine luminaire LED lighting device may be received on the gear tray. By connecting a cable assembly of the marine luminaire LED lighting device to the electrical supply connection of the existing marine luminaire, electricity may be conveyed to LED componentry of the marine luminaire LED lighting device. In this way, the marine luminaire LED lighting device may be structurally and electrically retrofitted into an existing marine luminaire to provide an LED marine luminaire.

[0010] According to a first aspect of the invention, there is provided a marine luminaire LED lighting device for retrofit to an existing marine luminaire comprising a gear tray and an electrical supply connection, the device comprising: a gear tray assembly comprising: LED lighting componentry; a support tray configured to support the LED lighting componentry; and a fastening element configured to fasten the support tray to a gear tray of the existing marine luminaire; and a cable assembly configured to convey electricity from an electrical supply connection of the existing marine luminaire to the LED lighting componentry to power the LED lighting componentry, thereby providing an LED marine luminaire.

[0011] By providing a lighting device that is configured to be retrofit to an existing luminaire, existing luminaires may be converted from non-LED lighting to LED lighting. In this way, the efficiency of a marine lighting system may be vastly improved. A marine vessel comprising such a lighting system may consume less electricity for lighting than other vessels, and accordingly may be energy efficient and environmentally sustainable.

[0012] In addition, by providing a retrofittable device, the present invention provides an LED conversion kit that comprises fewer new parts than a new luminaire. Further, the present invention makes use of a structure, i.e. the gear tray, of the existing marine luminaire, requiring only any non-LED lighting devices to be removed. In this way, the device reduces an environmental impact of a conversion to LED lighting through reduction in production of new parts, and through reduction of waste, compared with luminaire replacement.

[0013] The device comprises a gear tray assembly comprising LED lighting componentry, a support tray, and a fastening element. The LED lighting componentry is supported by the support tray, the support tray is fastened to a gear tray of an existing luminaire by the fastening element. In this way, the support tray is supported by the existing marine luminaire. Electricity is conveyed by the cable assembly from an electrical supply connection of the existing marine luminaire to the LED lighting componentry. In this way, the LED lighting componentry is powered via the existing marine luminaire. Accordingly, the device comprises plug-and-play functionality.

[0014] By being fastened to the gear tray of an existing marine luminaire, the support tray of the device is configured to be received inside the luminaire. In other words, the device may be fastened to a structure of the existing marine luminaire, rather than configured to replace the structure of the luminaire. In this way, the device may be suitable for retrofit to any gear tray and therefore may be retrofitted into any existing marine luminaire. Accordingly, the device may be universally retrofittable, meaning it may be suitable for retrofit to any luminaire, rather than being confined to being suitable for only one type or model of existing marine luminaire. In this way, the device provides a versatile solution to the need to replace non-LED lighting with LED lighting in marine applications.

[0015] Marine luminaires typically are 2 foot (0.61 m) or 4 foot (1.22 m) in length. Due to standardisation of luminaire sizing, the device of the present invention may be suitable for retrofit to any marine luminaire of appropriate size. Accordingly, the device may be suitable for retrofit into any luminaire of any design, providing a housing of the luminaire comprises a suitable length.

[0016] By being universally retrofittable, the device may be suitable for retrofit to existing marine luminaires throughout a fleet of vessels wherein the fleet comprises a plurality of vessels of different manufacturers and models. Instead of inventorying, researching, purchasing and fitting a different replacement luminaire or LED conversion kit for each different luminaire on each different vessel, only the device of the present invention may be required to convert each luminaire of the entire fleet. In this way, the device may provide a convenient solution to the need to replace non-LED lighting with LED lighting in large fleets of marine vessels. The LED lighting componentry may comprise an array of LEDs and an LED driver. The LED driver may be configured to drive the LEDs. In other words, the electricity from the electrical supply connection of the existing marine luminaire may be conveyed by the cable assembly to the LED driver. The LED driver may apply a conversion to the electricity before supplying the electricity to the array of LEDs. For example, the LED driver may convert alternating current to direct current, and / or the LED driver may convert a voltage of the electricity to a voltage suitable for supply to the array of LEDs.

[0017] The array of LEDs may be arranged on a first side of the support tray, while the LED driver may be arranged on a second, opposite, side of the support tray. In this arrangement, the array of LEDs may not be obscured by the LED driver. In addition, in this arrangement the LED driver may be protected from direct sunlight which may cause a temperature in the LED driver to exceed a maximum working temperature, which may contribute to a failure of the LED driver.

[0018] The gear tray assembly may comprise a diffuser configured to diffuse light emitted by the LED lighting componentry. The diffuser may diffuse light emitted by the LED lighting componentry to produce substantially uniform illumination. In this way, the diffuser may disperse light substantially evenly so that the luminaire to which the device is retrofitted may provide substantially even illumination with reduced bright spots and shadows.

[0019] The diffuser may be arranged to cover the array of LEDs such that light emitted by the array of LEDs passes through the diffuser. In addition, by covering the array of LEDs, the diffuser may provide protection to the array of LEDs during handling and retrofitting.

[0020] The diffuser may comprise a semi-circular profile. In this way, the diffuser may disperse light substantially uniformly throughout a semi-circular profile along a length of the diffuser to provide a large illuminated area.

[0021] The diffuser may comprise a batwing diffuser configured to achieve a substantially flat-field beam profile. The diffuser may comprise any suitable diffuser configured to achieve a substantially flatfield beam profile. In this way, the diffuser may diffuse light emitted by the LED lighting componentry to provide substantially uniform illumination without a central bright spot. This may be particularly useful when illuminating a flat surface such as a floor or a bench. By comprising a diffuser, the device may soften light emitted from the LED lighting componentry to provide a quality of light that is comparable to the non-LED light source that it is replacing in the existing marine luminaire. In this way, a luminaire may provide like-for-like lighting before and after being retrofitted with the device of the present invention. Accordingly, the lighting demands of a vessel fitted with such a luminaire may be met, and no additional luminaires may be required.

[0022] The support tray may comprise a supporting plate and a leg; wherein the leg extends away from the supporting plate in a direction substantially perpendicular to the supporting plate. The supporting plate may be configured to support the LED lighting componentry. For example, an array of LEDs may be arranged on a first side of the supporting plate, and a LED driver may be arranged on a second side of the supporting plate. When retrofitted to an existing marine luminaire, the supporting plate may be arranged substantially parallel to the gear tray of the existing marine luminaire. The leg extends substantially perpendicularly away from the supporting plate. Accordingly, the leg may extend substantially perpendicularly towards the gear tray of the existing marine luminaire. In this way, the leg may separate the supporting plate and the gear tray of the existing marine luminaire such that the supporting plate is spaced apart from the gear tray by a length of the leg. Accordingly, a surface of the supporting plate that faces the gear tray of the existing marine luminaire may be used for the mounting of LED componentry, such as an LED driver. By being mounted on an opposite surface from an array of LEDs, the LED driver may not obstruct a light output from an array of LEDs.

[0023] Further, by providing a leg to space the supporting plate of the support tray away from a gear tray of an existing marine luminaire, a universality of the device may be improved. In particular, the device may be suitable for retrofit to any gear tray of an existing marine luminaire. A surface of a gear tray of an existing luminaire to which a leg of the support tray is configured to be fixed may not be flat. For example, the surface may comprise studs, fixtures, webbing etc. In this way, such a surface may not be suitable to receive a supporting plate of a support tray directly. By contrast, a leg may be readily received on such a surface, as a smaller area of suitable surface may be required. Accordingly, by providing a leg on the support tray, the device may be suitable for retrofit to any existing marine luminaire.

[0024] The support tray may comprise a plurality of legs. For example the supporting plate may comprise a number of legs selected from the range: two; four; six; eight; ten. In this way the supporting plate of the support tray may be spaced away from a gear tray of an existing marine luminaire substantially consistently across a length of the support tray. A plurality of legs may improve a security of the support tray by providing more points of engagement between the support tray and the gear tray of an existing marine luminaire. Further, a greater plurality of legs may distribute a mass of the device substantially evenly across the gear tray of an existing marine luminaire.

[0025] The support tray may be fastened to a gear tray of the existing marine luminaire via the leg. In this way, the leg may be used to secure the support tray to the gear tray of the existing marine luminaire. Accordingly, the leg may comprise a portion configured to receive the fastening element. By securing the support tray to the gear tray of the existing marine luminaire via the leg, a broad range of fastening elements may be suitable. In particular, a compact fastening element, for example one disposed inside the leg, may be used. Further, no space may be required on the supporting plate for the fastening element, accordingly the supporting plate may be reserved for receiving the LED componentry. In this way, the supporting plate may support more LED componentry, for example a greater array of LEDs, which may enable a greater light output from the device. By providing a dedicated leg configured to receive the fastening element, a use of space of the support tray may be efficient.

[0026] The leg may comprise a cavity configured to receive the fastening element. For example, the leg may comprise a blind hole, a through hole, a slot or a notch. A fastener may be received in or through the cavity. For example, a screw may pass through the cavity of the leg and into a gear tray of an existing marine luminaire to fasten the support tray to the gear tray. The cavity of the leg may enable a fastening element to be accurately located with respect to the leg of the support tray. In this way, a fastening of the support tray to a gear tray of an existing marine luminaire may be secure.

[0027] The support tray may further comprise a foot disposed at an opposite end of the leg from the supporting plate; wherein the foot extends away from the leg in a direction substantially parallel to the supporting plate. In this way, when retrofit to a gear tray of an existing marine luminaire, the foot may extend substantially parallel to the gear tray. Accordingly, the foot may be configured to abut the gear tray to stabilise the support tray with respect to the gear tray.

[0028] The support tray may be fastened to a gear tray of the existing marine luminaire via the foot. In this way, the foot may be used to secure the support tray to the gear tray of the existing marine luminaire. Accordingly, the foot may comprise a portion configured to receive the fastening element. By securing the support tray to the gear tray of the existing marine luminaire via the foot, a broad range of fastening elements may be suitable. In particular, a compact fastening element, for example a surface-fixing fastener, may be used.

[0029] Further, the foot may stabilise the support tray on a gear tray of an existing marine luminaire. The foot may be configured to receive a fastening element. By providing a foot that is arranged substantially parallel and adjacent to the gear tray of an existing marine luminaire in use, a secure and stable fastening may be achieved.

[0030] The foot may comprise a cavity configured to receive the fastening element. For example, the foot may comprise a blind hole, a through hole, a slot or a notch. A fastener may be received in or through the cavity. For example, a screw may pass through the cavity of the foot and into a gear tray of an existing marine luminaire to fasten the support tray to the gear tray. The cavity of the foot may enable a fastening element to be accurately located with respect to the foot of the support tray. In this way, a fastening of the support tray to a gear tray of an existing marine luminaire may be secure.

[0031] The support tray may comprise a plurality of legs, each leg comprising a foot. In this way, the support tray may comprise a plurality of feet. Alternatively, some legs may each comprise a foot while other legs may not. In addition, where the support tray comprises a plurality of feet, some feet may each comprise a cavity while some feet may not.

[0032] The fastening element may be configured to pierce a gear tray of the existing marine luminaire to fasten the support tray to the gear tray of the existing marine luminaire. In this way, the fastening element may create a hole in a gear tray of the existing marine luminaire during installation. For example, the fastening element may comprise a self-drilling screw. The self-drilling screw may pierce a gear tray of the existing marine luminaire to fasten the support tray to the gear tray of the existing marine luminaire. Accordingly, no preparatory operations, such as drilling or tapping a hole, may be required before the installation of the device. By piercing the gear tray to fasten the support tray to the gear tray, the fastening element improves a universality of the device. The fastening element does not rely on or require any special feature of a gear tray to render it suitable to receive the support tray of the device. The device may be suitable for retrofit to any existing marine luminaire by comprising a fastening element configured to pierce the gear tray of the existing marine luminaire. The fastening element may be configured to engage with a hole in a surface of a gear tray of the existing marine luminaire to fasten the support tray to the gear tray of the existing marine luminaire. For example, once the fastening element has pierced the gear tray of the existing marine luminaire to create a hole in the gear tray, the fastening element may engage with the hole to fasten the support tray to the gear tray. In the alternative, the fastening element may be configured to engage with a pre-existing hole in a surface of the gear tray. Such a pre-existing hole may be created through an operation of a retrofitting of the device that takes place prior to an installation of the device, such as drilling. Alternatively, the pre-existing hole may pre-date any retrofitting of the device. For example, the retrofitting of the device may take advantage of a hole in the gear tray previously configured to receive an article of non-LED componentry.

[0033] The fastening element may comprise a fastener selected from the range: machine screw; selftapping screw; self-drilling screw; rivet; bolt. The listed fasteners may be suitable to engage with a hole in a surface of a gear tray of the existing marine luminaire to fasten the support tray to the gear tray of the existing marine luminaire. In this way, the listed fasteners may provide a secure fastening of the support tray to the gear tray of the existing marine luminaire. The listed fasteners may be quick and simple to install. In particular, a self-drilling screw may be quick to install as it may be configured to pierce the gear tray to create a hole and engage with the hole to fasten the support tray to the gear tray during a single installation operation. In addition, a self-drilling screw may be secure as it engages with a hole it creates, reducing a risk of a previously created hole being over-sized leading to a loose or insecure fit.

[0034] The fastening element may be configured to engage with an unbroken surface of a gear tray of the existing marine luminaire to fasten the support tray to the gear tray of the existing marine luminaire. For example, the fastening element may be configured to fix a surface of a gear tray to a surface of the support tray. Additionally or alternatively, the fastening element may be configured to engage with an edge of a gear tray of the existing marine luminaire to fasten the support tray to the gear tray of the existing marine luminaire. In this way, no holes may be required in the support tray or the gear tray. By engaging with an unbroken surface and / or an edge of the gear tray of the existing marine luminaire, the fastening element may be suitable to be fixed in any position on the gear tray. Accordingly, the fastening element may provide a versatile fastening.

[0035] Further, by engaging with an unbroken surface and / or edge of the gear tray of the existing marine luminaire, the fastening element may be suitable to be fastened and unfastened. The support tray may be removably retained upon the gear tray of the existing marine luminaire. This may allow the support tray to be removed and replaced on the gear tray of the existing marine luminaire. In this way, a position of the support tray may be adjusted after an initial positioning on the gear tray. This may improve a final positioning of the support tray on the gear tray. Further, in this way, the support tray may be trial fitted to the gear tray before a final fitment is performed. This may allow a fitment to be checked and adjusted before the final fitment is performed. In addition, the support tray may be removed and replaced during service or maintenance operations with ease.

[0036] The fastening element may comprise a fastener selected from the range: magnet; hook and loop fastener; clip; strap. The listed fasteners may be suitable to engage with an unbroken surface and / or an edge of a gear tray of the existing marine luminaire to fasten the support tray to the gear tray of the existing marine luminaire. In this way, the listed fasteners may provide a versatile fastening of the support tray to the gear tray of the existing marine luminaire. The listed fasteners may be quick and simple to install. In particular, a magnet may be quick to install as it may be configured to magnetically attract the gear tray and the support tray. By disposing a magnet between an engagement portion, such as a foot, of the support tray and the gear tray, engagement of the support tray and the gear tray may be substantially immediately effected. Further, a magnet may be substantially reusable a great many times. In other words, the support tray may be removed and replaced upon the gear tray of the existing marine luminaire any number of times using a magnet fastener.

[0037] The fastening element may comprise a clip. Such a clip may comprise a flexible pre-formed metal protrusion configured to engage with an edge of the gear tray of the existing marine luminaire. For example, the support tray may comprise a plurality of clips arranged in pairs, one clip of each pair being configured to engage with a first edge of a gear tray of an existing marine luminaire, and a second clip of each pair being configured to engage with a second, opposite edge of a gear tray of an existing marine luminaire. Each clip may be formed into a shape configured to engage with an edge of the gear tray, such as a C-shape or Z-shape. Each clip may be flexible to deform to receive an edge of the gear tray. Further, each clip may be biased, or sprung, such that, when the clip is deformed, e.g. expanded, by an edge of the gear tray being disposed inside the clip, the clip is biased towards an undeformed, e.g. contracted, position such that it securely grips the edge of the gear tray. Alternatively, each clip may comprise a toggle clamp configured to engage with an edge of a gear tray of the existing marine luminaire. By providing a plurality of toggle clamps arranged on opposite sides of the support tray, the support tray may be securely and removably fastened to the gear tray of the existing marine luminaire.

[0038] The fastener may comprise an anti-slip element selected from the range: adhesive; adhesive tape; rubber strip; rubber washer. For example, the anti-slip element may comprise a glue, a glue dot, a spray adhesive tackifier, a non-curing paint-on glue, an anti-slip adhesive tape and / or a double-sided sticky tape. An anti-slip adhesive tape may comprise an adhesive side and an opposite anti-slip side having a stippled or otherwise rough surface configured to increase friction and thereby inhibit sliding movement. The anti-slip element is configured to inhibit a movement of the support tray with respect to the gear tray of the existing marine luminaire once fastened together. In particular, the anti-slip element inhibits a sliding of the support tray with respect to the gear tray of the existing marine luminaire when the fastening element is configured to engage with an unbroken surface of a gear tray of the existing marine luminaire. For example, when the fastening element comprises a magnet, the anti-slip element inhibits a sliding, or wandering, of the support tray with respect to the gear tray of the existing marine luminaire which may be tolerated by a magnetic connection. In this way, the anti-slip element helps retain the support tray in position on the gear tray of the existing marine luminaire. Further, anti-slip elements comprising an adhesive assist the fastening element to retain the support tray on the gear tray.

[0039] In addition, an anti-slip element may be used in conjunction with a fastener that is configured to engage with a hole in a surface of a gear tray of the existing marine luminaire to fasten the support tray to the gear tray of the existing marine luminaire. For example, an anti-slip element may be used in conjunction with a self-drilling screw. The inventors have found that an anti-slip element, such as a rubber strip or washer, disposed between the support tray and a gear tray of an existing marine luminaire, acts to reduce an impact of vibration experienced by the existing marine luminaire on the device. In this way, a risk of damage to the device caused by vibration during use may be reduced. Further, any rattling of the device caused by vibration during use after retrofit to an existing marine luminaire may be reduced.

[0040] In some embodiments, it may be preferable to provide a fastening element configured to engage with a hole in a surface of a gear tray of the existing marine luminaire and a fastening element configured to engage with an unbroken surface of a gear tray of the existing marine luminaire to fasten the support tray to the gear tray of the existing marine luminaire. For example, a support tray may be fastened to a gear tray of an existing marine luminaire by a self-drilling screw and a magnet. The self-drilling screw may be configured to engage with a first engagement portion, e.g. leg or foot, of the support tray, while a magnet may be configured to engage with a second engagement portion, e.g. leg or foot, of the support tray. In this way, dual advantages of secure fixing and rapid installation may be achieved.

[0041] Alternatively, the self-drilling screw and the magnet may be configured to engage with a same engagement portion, e.g. leg or foot, of the support tray. For example, a magnet may be provided to enable a trial fitment of the support tray to be performed, while a self-drilling screw may be installed once the trail fitment is successfully completed to finalise the installation.

[0042] The LED lighting componentry may further comprise a backup battery configured to supply power to the LED lighting componentry to provide lighting in an emergency. The backup battery may be fully charged when the device is installed so that it may be relied upon to supply electricity to power the LED marine luminaire in an emergency. The backup battery may be charged during normal operation of the LED marine luminaire such that the battery is always fully charged. The backup battery may be disposed on the support tray. Preferably, the backup battery may be disposed on an opposite side of the support tray from an array of LEDs. In this way, the array of LEDs is not obstructed by the backup battery, and the backup battery may be protected from direct sunlight.

[0043] The LED lighting componentry may comprise live, earth and neutral terminals configured to supply alternating current accordingly to standard marine electrical operation. The LED lighting componentry may comprise a further terminal, a permanent live terminal, which is configured to charge the backup battery. When a power loss is detected from the permanent live, i.e. a power loss to the marine vessel is detected, the device may receive electricity from the backup battery to provide power to the LED marine luminaire. For example, an inverter within the gear tray may switch a source of electricity to the device from an electrical supply connection of the existing marine luminaire to the backup battery. In this way, at least a percentage of normal illuminance may be provided by the LED marine luminaire for emergency escape.

[0044] In some vessels, central battery systems are used. These batteries may supply 12 V, 24 V, or any other voltage level. The device of the present invention may be configured to receive electricity from a central battery via an electrical supply connection of the existing marine luminaire, should the main source of power fail, and illuminate using this battery power. Brief Description of the Drawings

[0045] Embodiments of the present invention will now be described by way of example only and with reference to the accompanying drawings, in which:

[0046] Figure 1 depicts a schematic underside view of a marine luminaire LED lighting device according to an aspect of the invention and a schematic overhead view of an existing marine luminaire;

[0047] Figure 2 depicts a schematic overhead view of an LED marine luminaire comprising the marine luminaire LED lighting device of Figure 1 retrofitted into the existing marine luminaire of Figure 1 ; and

[0048] Figure 3 depicts a schematic isometric view of the marine luminaire LED lighting device of Figure 1.

[0049] Detailed Description

[0050] With reference to Figure 1 , a marine luminaire 1000, comprising a gear tray 2000 and an electrical supply connection (not shown), is illustrated. A marine luminaire LED lighting device 100 for retrofit to the existing marine luminaire 1000 is shown. The marine luminaire LED lighting device 100 comprises: a gear tray assembly 102 comprising: LED lighting componentry 104; a support tray 106 configured to support the LED lighting componentry 104; and a fastening element 108 configured to fasten the support tray 106 to a gear tray 2000 of the existing marine luminaire 1000; and a cable assembly 110 configured to convey electricity from an electrical supply connection of the existing marine luminaire 1000 to the LED lighting componentry 104 to power the LED lighting componentry 104, thereby providing an LED marine luminaire.

[0051] The marine luminaire 1000 comprises a non-LED lighting device 3000, comprising two fluorescent tubes 3000. The fluorescent tubes 3000 are supported by the gear tray 2000. The gear tray is enclosed by a housing 4000 and a transparent lid 5000 of the luminaire 1000. The luminaire 1000 is illustrated by way of example only. As previously discussed, the marine luminaire LED lighting device 100 of the present invention may be suitable for retrofit into any existing marine luminaire. The marine luminaire LED lighting device 100 comprises a gear tray assembly 102 and a cable assembly 110. The gear tray assembly 102 comprises a support tray 106 which supports LED lighting componentry 104. The support tray 106 has a substantially rectangular shape. The LED lighting componentry 104 comprises an LED driver 126, a connector 116, a backup battery 124 and an array of LEDs (not shown). The array of LEDs is disposed on an opposite side of the support tray 106 from the LED driver 126 The LED driver 126 is electrically connected to the array of LEDs by wires which extend through holes in the support tray from the LED driver 126 to the array of LEDs. The cable assembly 110 comprises a cable configured to be connected between the connector 116 of the LED lighting componentry 104 and the electrical supply connection of the existing marine luminaire 1000. At one end, the cable assembly 110 terminates in flying leads 112. The flying leads are configured to be connected into a terminal block (not shown) of the marine luminaire 1000. At a second end, the cable assembly 110 terminates in a connector 114. The connector 114 is configured to be connected to the connector 116 of the LED componentry 104 disposed on the support tray 106. In this way, the marine luminaire LED lighting device 100 may be electrically retrofit to the marine luminaire 1000 and the device 100 exhibits plug-and-play functionality.

[0052] The support tray 106 is fastened to the gear tray 2000 of the marine luminaire 1000 by self-drilling screws. Rubber washers are disposed between the support tray 106 and the gear tray 2000 of the marine luminaire 1000 to attenuate vibrations. During retrofit, the self-drilling screws pass through holes in the support tray 106, pierce holes in the gear tray 2000 and engage with the holes to secure the support tray 106 to the gear tray 2000. In this way, the marine luminaire LED lighting device 100 may be structurally retrofit to the marine luminaire 1000.

[0053] With reference to Figure 2, an LED marine luminaire 200 comprising the marine luminaire LED lighting device 100 retrofitted into the existing marine luminaire 1000 is provided. During retrofit of the marine luminaire LED lighting device 100 to the marine luminaire 1000, the lid 5000 is removed and the fluorescent tubes (not shown in Figure 2) are extracted and may be discarded. In this way, the gear tray 2000 is rendered accessible to receive the support tray 106 of the marine luminaire LED lighting device 100. The cable assembly 110 is connected between the connector (not shown in Figure 2) of the LED lighting componentry (not shown in Figure 2) and the electrical supply connection of the existing marine luminaire 1000. The support tray 106 is fastened to the gear tray 2000 of the marine luminaire 1000 by the fastening element 108, i.e. self-drilling screws and rubber washers. Finally the lid 5000 is replaced. In this way, an LED marine luminaire 200 is provided. In Figure 2, a side of the support tray 106 supporting the array of LEDs is shown. The array of LEDs is obscured by a diffuser 202 in Figure 2. In use, light emitted by the array of LEDs passes through the diffuser 202 and is diffused to provide a desirable beam profile. In addition, a cable assembly 110 is shown. The diffuser 202 of Figure 2 is an 85% efficient semi-circular frosted diffuser, providing a circular uniform light pattern.

[0054] With reference to Figure 3, a support tray 106 of the device 100 is shown. The support tray 106 comprises six legs 118. Each leg 118 extends away from a supporting plate 120 of the support tray 106 in a direction substantially perpendicular to the supporting plate 120. Each leg 118 comprises a foot 122. Each foot 122 extends away from its associated leg 118 in a direction substantially perpendicular to the leg 118 and parallel to the supporting plate 120. The support tray 106 is fastened to a gear tray 2000 of the existing marine luminaire 1000 via the feet 122. Each foot 122 comprises a cavity configured to receive a fastening element 108. The support tray 106 is fastened to the gear tray 2000 of the marine luminaire 1000 by the fastening element 108.

[0055] Further embodiments within the scope of the present invention may be envisaged that have not been described above, for example, the marine luminaire LED lighting device may be retrofit in any suitable luminaire. For example, the marine luminaire LED lighting device may be retrofit in a round downlight luminaire. Such a device may comprise a circular shape to conform to the round downlight luminaire, or may comprise a rectangular shape, similar to that depicted in the figures, configured to extend, for example, across a diameter of the round luminaire. In such a case, or otherwise, the LED componentry may comprise an array of LEDs, and a driver for the array of LEDs may be arranged remotely from the device. Further, the marine luminaire LED lighting device may comprise any suitable number of parts comprising any number of portions. The marine luminaire LED lighting device may comprise any suitable combination of support elements, fastening elements and LED lighting componentry. Parts of the marine luminaire LED lighting device may be fastened to a gear tray of an existing marine luminaire in any suitable manner. Any suitable number and type of fastening elements may be used to connect the parts together. For example, the fastening element may be any type of screw. The support tray may be fastened to any suitable surface of a gear tray of an existing marine luminaire. The cable assembly may be any suitable cable assembly. The LED componentry may be any suitable LED componentry. For example, the LED componentry may enable adjustment of an intensity of light emitted by an array of LEDs to provide a dimmable marine luminaire LED lighting device. Further the LED componentry may enable adjustment of an intensity of light emitted by an array of LEDs in response to a sensor, such as an occupancy sensor. In this way, a dimmable marine luminaire LED lighting device with a corridor function may be provided. The luminaire may be any suitable luminaire. In addition, the components of the invention may be formed of any suitable material.

[0056] To provide improvements in energy efficiency on marine vessels without requiring expensive and wasteful replacement of all non-LED marine luminaires, a retrofittable marine luminaire LED lighting device is required. The marine luminaire LED lighting device of the present invention is quick and simple to install and universally retrofittable. The present invention is not limited to the specific examples or structures illustrated, a greater number of components than are illustrated in the figures could be used, for example.

Claims

Claims1. A marine luminaire LED lighting device for retrofit to an existing marine luminaire comprising a gear tray and an electrical supply connection, the device comprising: a gear tray assembly comprising:LED lighting componentry; a support tray configured to support the LED lighting componentry; and a fastening element configured to fasten the support tray to a gear tray of the existing marine luminaire; and a cable assembly configured to convey electricity from an electrical supply connection of the existing marine luminaire to the LED lighting componentry to power the LED lighting componentry, thereby providing an LED marine luminaire.

2. A marine luminaire LED lighting device according to claim 1, the LED lighting componentry comprising an array of LEDs and an LED driver.

3. A marine luminaire LED lighting device according to claim 1 or claim 2, wherein the gear tray assembly further comprises a diffuser configured to diffuse light emitted by the LED lighting componentry.

4. A marine luminaire LED lighting device according to claim 3, wherein the diffuser comprises a semi-circular profile.

5. A marine luminaire LED lighting device according to claim 3 or claim 4, wherein the diffuser comprises a batwing diffuser configured to achieve a substantially flat-field beam profile.

6. A marine luminaire LED lighting device according to any preceding claim, wherein the support tray comprises a supporting plate and a leg; wherein the leg extends away from the supporting plate in a direction substantially perpendicular to the supporting plate.

7. A marine luminaire LED lighting device according to claim 6, wherein the support tray is fastened to a gear tray of the existing marine luminaire via the leg.

8. A marine luminaire LED lighting device according to claim 6 or claim 7, wherein the leg comprises a cavity configured to receive the fastening element.

9. A marine luminaire LED lighting device according to any one of claim 6 to 8, wherein the support tray further comprises a foot disposed at an opposite end of the leg from the supporting plate; wherein the foot extends away from the leg in a direction substantially parallel to the supporting plate.

10. A marine luminaire LED lighting device according to claim 9, wherein the support tray is fastened to a gear tray of the existing marine luminaire via the foot.

11. A marine luminaire LED lighting device according to claim 9 or claim 10, wherein the foot comprises a cavity configured to receive the fastening element.

12. A marine luminaire LED lighting device according to any preceding claim, wherein the fastening element is configured to pierce a gear tray of the existing marine luminaire to fasten the support tray to the gear tray of the existing marine luminaire.

13. A marine luminaire LED lighting device according to any preceding claim, wherein the fastening element is configured to engage with a hole in a surface of a gear tray of the existing marine luminaire to fasten the support tray to the gear tray of the existing marine luminaire.

14. A marine luminaire LED lighting device according to claim 13, wherein the fastening element comprises a fastener selected from the range: machine screw; self-tapping screw; self-drilling screw; rivet; bolt.

15. A marine luminaire LED lighting device according to any preceding claim, wherein the fastening element is configured to engage with an unbroken surface of a gear tray of the existing marine luminaire to fasten the support tray to the gear tray of the existing marine luminaire.

16. A marine luminaire LED lighting device according to claim 15, wherein the fastening element comprises a fastener selected from the range: magnet; hook and loop fastener; clip; strap.

17. A marine luminaire LED lighting device according to claim 14 or claim 16, wherein the fastener comprises an anti-slip element selected from the range: adhesive; adhesive tape; rubber strip; rubber washer.

18. A marine luminaire LED lighting device according to any preceding claim, the LED lighting componentry further comprising a backup battery configured to supply power to the LED lighting componentry to provide lighting in an emergency.

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