A luminaire driver assembly and method of installation

Abstract

A driver assembly for a luminaire is disclosed. The driver assembly includes a housing designed to be capable of being inserted at least partially through an opening in the luminaire and into a plenum space. A plurality of components for driving the luminaire are locatable within the housing. The housing includes a first access section to enable a line voltage connection to the driver prior to insertion into the opening. An enclosure plate, coupled to the housing, having a second access section. The enclosure plate provides a cover for the opening, and enables coupling of the driver assembly to the luminaire. The second access section enables low voltage connections between the driver and the components after insertion of the driver assembly into the opening. A method of installation for the driver assemblies is also disclosed.

Description

[0001] A LUMINAIRE DRIVER ASSEMBLY AND METHOD OF INSTALLATION

[0002] FIELD OF THE INVENTION

[0003] The invention relates to luminaire drivers and methods of installing the luminaire drivers, more particularly, to an LED driver assembly capable of being inserted into and through an opening in a drawn / low profile luminaire.

[0004] BACKGROUND

[0005] Advances in LED brightness and efficacy have allowed LED lamps and LED modules to be developed that could offer even longer lamp life and brighter outputs when properly configured, to compete with incandescent, HID or fluorescent lamps. An LED driver is used to provide the correct power to the LEDs either through PWM, constant voltage, or constant current. The LED lamps and LED modules can be hard-wired directly to the LED driver in an internal or external configuration, or can be eliminated with the use of dimmable AC LEDs and special IC chips.

[0006] LED technology reduces electrical demand and energy consumption compared to conventional fluorescent lighting systems, and also offers controllability, light uniformity, and less maintenance. In this regard, LED luminaires are an efficient alternative source of light. By utilizing a plurality of LEDs in a defined arrangement, the LEDs may be utilized to provide an alternative to current luminaires discussed above. For the LED luminaires (e.g., bulbs, tubes, fixtures) to be widely adapted they need to be able to replace current luminaires in existing lighting configurations.

[0007] Conventional LED luminaires exist that are designed so that an LED driver module is installed into a wiring (also called junction). The wiring es are concealed behind a wall or ceiling. The wiring acts as the required housing enclosure for the LED driver module. The LED driver module is placed within the wiring using some of the space normally needed for wiring connections.

[0008] Conventional recessed mounted luminaires require an electrical access from below the ceiling such that the LED driver is installed behind a wiring cover usually located behind a lens door or a removeable lens. This causes the luminaire to be deep enough to accommodate the driver and the lens internally. This adds to the overall depth of the luminaire which causes a need for a deeper plenum space (above the ceiling).

[0009] Typically, a low-profile luminaire requires use of a back mounted driver which is not accessible from below the ceiling and may only be accessed from the back of the luminaire, above the ceiling in the plenum.

[0010] US 6 402 350 Bl relates to a lighting fixture having a fixture housing, a transformer housing, and a locking means is suitable for installation in non-accessible areas. The transformer housing includes a first stop and second stop, and is pivotally engaged with an access aperture that is part of the fixture housing. The locking means serves to prevent pivotal movement of the transformer housing in relation to the access aperture. The lighting fixture may also have a fixture housing, a transformer recess, and a locking means. In this embodiment, the fixture housing includes an inner stop with which a transformer is pivotally engaged, and the transformer is retained in the recess by the locking means. The lighting fixture also includes a trim assembly.

[0011] US 2022 / 196232 Al relates to a driver that includes a housing designed to be capable of being inserted at least partially through an opening formed by removing a knockout tab in a junction box and into a plenum space that is not part of the splice compartment of the junction box. A plurality of components for driving the luminaire are locatable within the housing. An electrical connection is provided to electrically coupling the plurality of components to the luminaire.

[0012] US 2011 / 188254 Al relates to a recessed fixture housing is provided with a removable ballast box. The removable ballast box is removably received in an aperture provided through the recessed fixture housing. At least one spring clip removably engages the ballast box and maintains the ballast box in position when the ballast box is received in the ballast box aperture.

[0013] US 2017 / 184263 Al relates to a lighting arrangement with a housing having an interior and a light outlet region, and at least one light-providing device. The lightproviding device is configured such that it can be arranged within the interior to emit light during operation through the light outlet region to the outside. The light-providing device can be coupled to the housing and can be freely positioned at least within one region of the interior. A second lighting arrangement has a housing having an interior and a light outlet region, the housing having an opening, which is set up to guide at least one line through the opening out of the interior. The second lighting arrangement has at least one brush, which is provided with hairs or fibres or bristles, which are arranged in the opening and / or cover the opening at least in portions.

[0014] Aspects and embodiments of the present invention address this shortcomings by providing an LED driver that allows service (e.g. installation and power line connections) from below the low-profile luminaire because the LED driver connection are enabled before the driver assembly is located in the air space provided by a wall or ceiling plenum and the LED driver connection to the low voltage components of a luminaire after the driver assembly is located in the air space provided by a wall or ceiling plenum.

[0015] One aspect of the present invention is related to an improved method using a driver assembly, that is capable of being inserted into and through an opening or hole (or knockout hole) of one end of a luminaire, for example a low-profile or recessed luminaire. The driver assembly includes a housing, the housing contains various components, including a driver, to drive / control the luminaire. An enclosure plate and flexible conduit between the housing and enclosure plate. The driver assembly can be locked into position onto the luminaire, using the enclosure plate, once in its final position, inside a plenum space of a building. The wiring for the driver is accessible in the driver assembly. The mains or initial line voltage connections would be made in a first access section / knockout provided in the housing prior to insertion in the opening and a second access section in the enclosure plate to electrically connect the low voltage side of the LED driver, via leads, to various components of the luminaire, after insertion in the opening. Thus, both the main / line voltage and low voltage connections are made from the room side or lighting side of the luminaire (e.g. not in the plenum space). In this regard, the driver assembly can be inserted into the luminaire from a room side of a building for various applications, through luminaire opening into plenum space of the building. The driver assembly would be, for example, laid in the adjacent ceiling tile of the recessed tile ceiling. This allows for more space in the driver assembly for wiring and allows for larger LED drivers for luminaires with higher power.

[0016] Another aspect of the present invention allows for better dissipation of heat generated by the higher wattage LED drivers.

[0017] One embodiment of the present invention is directed to a driver assembly for a luminaire. The driver assembly including a housing, capable of being inserted at least partially through an opening in the luminaire and into a plenum space. A plurality of components are located in the luminaire housing including one or more LED boards, optics, diffusers, reflectors and the low voltage electrical connections points for electrically coupling the plurality of components to the luminaire and / or driver. The driver assembly for use with a luminaire, comprising a housing insertable, at least partially, through an opening in the luminaire and into a plenum space. A plurality of components for driving / controlling the luminaire within the housing, wherein the plurality of components includes at least a driver. The housing includes a first access section to enable a line voltage connection to the driver prior to insertion into the opening. An enclosure plate, coupled to the housing, having a second access section. The enclosure plate provides a cover for the opening, and enables coupling of the driver assembly to the luminaire. The second access section enables low voltage connections between the driver and the components after insertion of the driver assembly into the opening.

[0018] Another embodiment of the present invention is directed to a method for installing a driver assembly for a luminaire. The driver assembly includes a housing, a plurality of components for driving / controlling the luminaire within the housing, wherein the plurality of components includes at least an LED driver, wherein the housing has a first access section, and an enclosure plate, coupled to the housing, having a second access section, The method includes the steps of electrically connecting mains or line voltage to the driver assembly through the first access section. Inserting, at least partially, the driver assembly into an opening of the luminaire and into a plenum space, securing the river assembly to the luminaire using the enclosure plate, wherein the enclosure plate also covers the opening of luminaire. Electrically connecting low voltage leads through the second access section from the LED driver to one or more of the plurality of components of the LED luminaire.

[0019] BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Further details, aspects, and embodiments of the invention will be described, by way of example only, with reference to the drawings. Elements in the figures are illustrated for simplicity and clarity and have not necessarily been drawn to scale. In the Figures, elements which correspond to elements already described may have the same reference numerals. In the drawings,

[0021] Fig. 1 shows a driver assembly for a luminaire in accordance with an embodiment of the present invention;

[0022] Fig. 2A shows the luminaire with an opening to allow the driver assembly installation of the embodiment of Fig. 1;

[0023] Fig. 2B shows an installed driver assembly of the embodiment of fig. 1 into a plenum space of a building; and Fig. 2C shows the electrical connections from the embodiment of Fig. 1 to the luminaire’s internal components.

[0024] DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

[0025] While this invention is susceptible of embodiment in many different forms, there are shown in the drawings and will herein be described in detail one or more specific embodiments, with the understanding that the present disclosure is to be considered as exemplary of the principles of the invention and not intended to limit the invention to the specific embodiments shown and described.

[0026] In the following, for the sake of understanding, elements of embodiments are described in operation. However, it will be apparent that the respective elements are arranged to perform the functions being described as performed by them.

[0027] Further, the invention is not limited to the embodiments, and the invention lies in each and every novel feature or combination of features described herein or recited in mutually different dependent claims.

[0028] Referring to Figs. 1-3, they show a driver assembly 10 in accordance with one embodiment of the present invention. The driver assembly 10 includes a plurality of components 11 for providing operating voltage and current to an LED luminaire 12. The components 11, including an LED driver 15, are removeable from a housing 13. The components 11 may further include a connector (not shown) to conventionally (electrically) connect to the LED driver 12 to mains or initial line voltage via a first access section / knockout 17 and leads 14 to electrically connect, via a second access section 23, the low voltage side of the LED driver 12 to various components of the LED luminaire 12, for example LED board 16. The leads 14 may be flexible, including a flexible wire, flexible connector or other conventional coupling means that enables flexibility between the enclosure plate 18 and the housing, as described below.

[0029] The driver assembly 10 also includes an enclosure plate 18 having the second access section 23. The enclosure plate 18 is flexibly coupled to the housing, wherein flexibly includes bendable, adjustable, pliant and rotatable. For example, using a flexible conduit 24, bendable wires or the leads 14 . The flexible coupling help to provide flexibility in inserting the driver assembly 10 into the luminaire 12 opening 20. And allow the driver assembly 10 to lay flat in the plenum or ceiling (for example, on the ceiling title, as shown in fig. 2B) as well as help to avoid any obstructions in the plenum space 22. The enclosure plate 18 is used to provide a cover for the opening 20 of luminaire 12, and help protect the components 11 from the environment, dust, etc. and to enable coupling the driver assembly 10 to the luminaire 12. One of ordinary skill in the art will appreciate that the enclosure plate 14 is not necessary in all embodiments. For example, the flexible conduit (24) may include an attached means, such as a screw and a bolt to secure it in place to the luminaire 12. The enclosure plate 18 may also include a fastener 19 to connect to the luminaire 12. The fastener 19 may be a hardware device that mechanically joins or affixes the enclosure plate 18 of the driver assembly 10 to an opening portion 20 of the luminaire 12. In general, the fastener 19 is used to create non-permanent joint that can be removed or dismantled without damaging the driver assembly 10. In this regard, the fastener 19 may be a tab, clamp, clip or screw thread connector. The joint may also be permanent if desired, e.g., via welding. The fastener 19 may be made of metal, plastic, composite, alloy or other material generally used for fastening. Other alternative methods of joining the driver assembly 10 to the opening 20 may include crimping, soldering, brazing, taping, gluing, cement, or the use of other adhesives. Force may also be used, such as with magnets, vacuum (like suction cups), or even friction (like sticky pads).

[0030] The plurality of components 11 drive the LED luminaire 12. The components 11 may include supply and control circuits, an isolation circuit (e.g., opto-isolator, transformer), a rectifier / filter, and current (and possibly voltage) monitoring circuitry. The driver assembly 10 may slice or switch the received voltage into small slices so that the signal can be transmitted efficiently across the isolation circuit. The alternating current (AC) of the slices induces electricity on the secondary windings of the isolation circuit. The AC frequency of the slices determines the amount of current that will flow through the LED luminaires (e.g., fixtures, bulbs, tubes, arrays) being powered thereby. The driver assembly 10 may be programmed based on various parameters including parameters related to the power supply it is utilized in and LED luminaires 12 it will be powering. The driver assembly 10 may also be used for power factor correction to ensure that its power supply meets energy efficiency standards.

[0031] The isolation circuit may perform a step-down function and may convert the energy to the energy necessary to operate the LED luminaires 12 (e.g., 120V to 30V). Alternatively, other circuitry (not illustrated) may be used to convert (e.g., further step-down) the energy to the level required by the LED luminaires 12. The isolation circuit isolates the power source from the LED drives so as to prevent inadvertent contact with line power. The rectifier / filter converts AC voltage to a DC voltage and filters out any noise. The current monitoring circuitry may monitor current through the LED luminaires 12 indirectly (by measuring the frequency of the AC signal) on the primary side of the isolation circuit. The current monitoring circuitry may provide feedback (e.g., reference signal associated with the measured current) to adjusts the frequency of the AC voltage (corresponding to current) to increase or decrease the current accordingly. Voltage monitoring circuitry may monitor voltage across the LED luminaires 12 by measuring the voltage drop across the primary side of the isolation circuit to ensure the LED luminaires 12 voltage doesn't reach dangerous levels. The monitored LED luminaires 12 voltage may be may adjusted taking this measurement into account as well.

[0032] It will be understood by one of ordinary skill in the art that other known circuitry, elements and modules may be used to provide the necessary voltage and current to drive the LED luminaires 12. The present invention is also not limited to LED drivers (15) but may be include other types of drives for luminaires.

[0033] It should also be understood that the term LED does not limit the physical and / or electrical package type of an LED. For example, an LED may refer to a single light emitting device having multiple dies that are configured to respectively emit different spectra of radiation (e.g., that may or may not be individually controllable). Also, an LED may be associated with a phosphor that is considered as an integral part of the LED (e.g., some types of white LEDs). In general, the term LED may refer to packaged LEDs, non-packaged LEDs, surface mount LEDs, chip-on-board LEDs, T-package mount LEDs, radial package LEDs, power package LEDs, LEDs including some type of encasement and / or optical element (e.g., a diffusing lens), etc.

[0034] The term “lighting fixture” or “luminaire” is used herein to refer to an implementation or arrangement of one or more lighting units in a particular form factor, assembly, or package. The term “lighting unit” is used herein to refer to an apparatus including one or more light sources of same or different types. A given lighting unit may have any one of a variety of mounting arrangements for the light source(s), enclosure / housing arrangements and shapes, and / or electrical and mechanical connection configurations. Additionally, a given lighting unit optionally may be associated with (e.g., include, be coupled to and / or packaged together with) various other components (e.g., control circuitry) relating to the operation of the light source(s). An “LED-based lighting unit” refers to a lighting unit that includes one or more LED-based light sources as discussed above, alone or in combination with other non LED-based light sources. A “multi-channel” lighting unit refers to an LED-based or non LED-based lighting unit that includes at least two light sources configured to respectively generate different spectrums of radiation, wherein each different source spectrum may be referred to as a “channel” of the multi-channel lighting unit.

[0035] The housing 13 is designed to be capable for being inserted through opening 20. As shown in the embodiment of Figs. 1, 2A and 2B, the house 13 may be rectangular. However, the housing 13 is not limited to this shape and may be any shape that is capable of being inserted full or partially through one or more of the openings 20. For example, the housing 13 maybe a tubular, e.g., a cylindrical tube, polyhedral shape, an octagon tube, a 3D curved shape, a 3D shape with an angle in the middle or elsewhere (e.g., 30, 45 or 90 degrees), a U-shaped container, a non-circular 3D shape or other container capable of housing the components 11 and fitting through the opening 20. The housing 13 may also include vents to facilitate heat dissipation and may be made of metal, plastic, composite, alloy or other material that may facilitate heat dissipation.

[0036] Aside from material costs for the LED luminaires 12, the end user must take installation labor into consideration. Making the installation of LED luminaries 12 quick, easy and simple is one important consideration in the design thereof. One of the ways some of the embodiments of the present invention simply installation is by the use of the openings 20 of the luminaire 12.

[0037] For purposes of the present invention, the driver assembly 10 that includes a housing that provides protection and a safety barrier for electrical connections. The housing may be on any appropriate configuration such but not limited to a , rectangle, hexagon or other 3D shape. The housing may be made, for example, from metal, plastic, composite or other material. The housing may form part a building's electrical wiring system.

[0038] The driver assembly 10 provides a secure environment for the LED driver 15, electrical wires, generally known (in the US for example) as hot (black), white (neutral) and grounding (green or copper). Other colors of wires, which are used for secondary functions and for lighting control. The driver assembly 10 serves as the communal meeting spot for electrical wires, where they connect before moving on. In this regard, the driver assembly 10 will have a splice compartment (not shown) within housing 13 for the electrical wires into which power, lighting control wires and / or data wires are placed. The interconnection or communal meeting of such power, lighting control wires and / or data wires may be made via the first access section or knockout 17 . The driver assembly 10 may also include a plurality of first access sections 17. The driver assembly 10 must be installed correctly and in compliance with the applicable building codes. Figs. 2 and 3 show a method of installing the driver assembly 10 into the luminaire 12 via the opening 20. In fig. 2A, the driver assembly 10 is separate and not installed in the luminaire 12. The opening 20 may already be in place or one or more of the knockout tabs may need to be removed. The installer must ensure that there is space, e.g., behind the wall or ceiling 21, etc., to fit the driver assembly 10. In Fig. 2B, the LED driver 15 is also conventionally electrically connected to mains or initial line voltage from a building (not shown). Thereafter, the driver assembly 10 is inserted, pushed, moved, arranged, placed, in or partially in the opening 20. In fig. 3, the 10 enclosure plate 18 of driver assembly 10 is secured in place with the fastener 19. Leads 14, that exit the second access section 23, are used to electrically connect the low voltage side of the LED driver 15 to the various components of the LED luminaire 12, for example LED board 16. As shown in figs 2A, 2B and 3, the driver assembly 10 is designed to be capable of being inserted from a room side of a building through the luminaire 12 via the opening 20 into plenum space 22 (i.e., behind the wall or ceiling 21) of the building. Thus an installer may make an electrically connection between the LED driver 15 and the LED luminaire 12 (low voltage side) using the leads 14 and the electrically connection between the LED driver 15 and the mains or building electric (high voltage side) on the room side and not in the plenum space 22.

[0039] Future electrical access would be obtained by disconnecting the (low voltage) leads 14 from the LED board(s) 16, removing the fastener 19 in the internal luminaire enclosure plate and pulling the driver 10 back from the plenum space 22 and into the luminaire below the ceiling (e.g. room side).

[0040] This method allows for more space in the driver assembly 10 for wiring and allows for larger LED drivers 15 for LED luminaires 12 with higher power. This also allows for better dissipation of heat generated by the LED drivers 10 because the driver assembly 10 is located in a larger air space provided by the plenum space 22.

[0041] The foregoing detailed description has set forth a few of the many forms that the invention can take. The above examples are merely illustrative of several possible embodiments of various aspects of the present invention, wherein equivalent alterations and / or modifications will occur to others skilled in the art upon reading and understanding of the present invention and the annexed drawings. In particular, regard to the various functions performed by the above described components (devices, systems, and the like), the terms (including a reference to a "means") used to describe such components are intended to correspond, unless otherwise indicated to any component, such as hardware or combinations thereof, which performs the specified function of the described component (i.e., that is functionally equivalent), even though not structurally equivalent to the disclosed structure which performs the function in the illustrated implementations of the disclosure.

[0042] Although a particular feature of the present invention may have been illustrated and / or described with respect to only one of several implementations, such feature may be combined with one or more other features of the other implementations as may be desired and advantageous for any given or particular application. Furthermore, references to singular components or items are intended, unless otherwise specified, to encompass two or more such components or items.

[0043] The indefinite articles “a” and “an,” as used herein in the specification and in the claims, unless clearly indicated to the contrary, should be understood to mean “at least one.”

[0044] The phrase “and / or,” as used herein in the specification and in the claims, should be understood to mean “either or both” of the elements so conjoined, i.e., elements that are conjunctively present in some cases and disjunctively present in other cases. Multiple elements listed with “and / or” should be construed in the same fashion, i.e., “one or more” of the elements so conjoined. Other elements may optionally be present other than the elements specifically identified by the “and / or” clause, whether related or unrelated to those elements specifically identified. Thus, as a non-limiting example, a reference to “A and / or B”, when used in conjunction with open-ended language such as “comprising” can refer, in one embodiment, to A only (optionally including elements other than B); in another embodiment, to B only (optionally including elements other than A); in yet another embodiment, to both A and B (optionally including other elements); etc.

[0045] As used herein in the specification and in the claims, “or” should be understood to have the same meaning as “and / or” as defined above. For example, when separating items in a list, “or” or “and / or” shall be interpreted as being inclusive, i.e., the inclusion of at least one, but also including more than one, of a number or list of elements, and, optionally, additional unlisted items. Only terms clearly indicated to the contrary, such as “only one of’ or “exactly one of,” or, when used in the claims, “consisting of,” will refer to the inclusion of exactly one element of a number or list of elements. In general, the term “or” as used herein shall only be interpreted as indicating exclusive alternatives (i.e. “one or the other but not both”) when preceded by terms of exclusivity, such as “either,” “one of,” “only one of,” or “exactly one of.” “Consisting essentially of,” when used in the claims, shall have its ordinary meaning as used in the field of patent law. As used herein in the specification and in the claims, the phrase “at least one,” in reference to a list of one or more elements, should be understood to mean at least one element selected from any one or more of the elements in the list of elements, but not necessarily including at least one of each and every element specifically listed within the list of elements and not excluding any combinations of elements in the list of elements. This definition also allows that elements may optionally be present other than the elements specifically identified within the list of elements to which the phrase “at least one” refers, whether related or unrelated to those elements specifically identified. Thus, as a non-limiting example, “at least one of A and B” (or, equivalently, “at least one of A or B,” or, equivalently “at least one of A and / or B”) can refer, in one embodiment, to at least one, optionally including more than one, A, with no B present (and optionally including elements other than B); in another embodiment, to at least one, optionally including more than one, B, with no A present (and optionally including elements other than A); in yet another embodiment, to at least one, optionally including more than one, A, and at least one, optionally including more than one, B (and optionally including other elements); etc.

[0046] It should also be understood that, unless clearly indicated to the contrary, in any methods claimed herein that include more than one step or act, the order of the steps or acts of the method is not necessarily limited to the order in which the steps or acts of the method are recited.

[0047] In the claims, as well as in the specification above, all transitional phrases such as “comprising,” “including,” “carrying,” “having,” “containing,” “involving,” “holding,” “composed of,” and the like are to be understood to be open-ended, i.e., to mean including but not limited to. Only the transitional phrases “consisting of’ and “consisting essentially of’ shall be closed or semi-closed transitional phrases, respectively, as set forth in the United States Patent Office Manual of Patent Examining Procedures, Section 2111.03.

[0048] In the claims references in parentheses refer to reference signs in drawings of exemplifying embodiments or to formulas of embodiments, thus increasing the intelligibility of the claim. These references shall not be construed as limiting the claim.

Claims

CLAIMS:

1. A driver assembly (10) for use with a luminaire (12), comprising: a housing (13) insertable, at least partially, through an opening (20) in the luminaire and into a plenum space (21); a plurality of components (11) for driving the luminaire (12) within the housing (13); a first access section (17) in the housing (13) enables line voltage connection to the driver (15) prior to insertion into the opening (20); an enclosure plate (18), flexibly coupled to the housing (13), having a second access section (23), wherein the enclosure plate 18 provides a cover for the opening 20, and enables coupling of the driver assembly (10) to the luminaire (12), and wherein the second access section (23) enables low voltage connections between the plurality components (11) and luminaire (12) after insertion of the driver assembly (10) into the opening (20).

2. The driver assembly (10) according to claim 1, wherein the driver (15) is an LED driver (15) and the luminaire (12) is an LED luminaire (12).

3. The driver assembly (10) according to claim 1, further including a flexible conduit (24) or leads (14) connected between the housing (13) and enclosure plate (18).

4. The driver assembly (10) according to claim 1, wherein the housing (13) is one of: substantially strait rectangular or tubular, U-shaped, has a curve, has a non-circular 3D shape.

5. The driver assembly (10) according to claim 1, wherein the enclosure plate (18) further includes a fastener (19) to secure the driver assembly (10) to the luminaire (12).

6. The driver assembly (10) according to claim 2, wherein the plurality of components (11) are at least partially removeable from the housing (13).

7. The driver assembly (10) according to claim 2, wherein the housing (13) is made from a material that facilitates heat dissipation.

8. The driver assembly (10) according to claim 1, wherein the luminaire (12) is a low-profile or recessed luminaire (12).

9. A method for installing a driver assembly (10) in a luminaire (12), driver assembly (10) having a housing (13), a plurality of components (11) for driving the luminaire (12) within the housing (13), wherein the plurality of components (11) includes at least an LED driver (15), wherein the housing (13) has a first access section (17), and an enclosure plate (18), flexibly coupled to the housing (13), having a second access section 23, the method comprising the steps of: electrically connecting mains or line voltage to the driver assembly (10) through the first access section (17); inserting, at least partially, the driver assembly (10) into an opening (20) of the luminaire (12) and into a plenum space (21); securing the river assembly (10) to the luminaire using the enclosure plate (18), wherein the enclosure plate also covers the opening (20) of luminaire 12; electrically connecting low voltage leads (14) through the second access section (23) from the LED driver (15) to one or more of the plurality of components (11) of the LED luminaire (12).

10. The method according to claim 9, wherein the step of securing the driver assembly (10) includes using a fastener (16).

11. The method according to claim 9, wherein the step of inserting, at least partially, the driver assembly (10) includes using a flexible a conduit (24) or leads (14) connected between the housing (13) and enclosure plate (18) to enable insertion into the opening and placement in the plenum space (21).

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