EP2952806A1 - Pivoting heat sink for LED luminaire - Google Patents
Pivoting heat sink for LED luminaire Download PDFInfo
- Publication number
- EP2952806A1 EP2952806A1 EP14170803.2A EP14170803A EP2952806A1 EP 2952806 A1 EP2952806 A1 EP 2952806A1 EP 14170803 A EP14170803 A EP 14170803A EP 2952806 A1 EP2952806 A1 EP 2952806A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat sink
- housing
- side wall
- attached
- luminaire assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
- F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
- F21V19/0035—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources the fastening means being capable of simultaneously attaching of an other part, e.g. a housing portion or an optical component
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
- F21V21/02—Wall, ceiling, or floor bases; Fixing pendants or arms to the bases
- F21V21/025—Elongated bases having a U-shaped cross section
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
- F21V23/023—Power supplies in a casing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2113/00—Combination of light sources
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Definitions
- the present disclosure relates generally to LED luminaires and particularly to recessed or suspended ceiling and wall mounted LED luminaires. More particularly, the present disclosure relates to a system and method for replacing the power supply unit (PSU) and other internal components of a recessed or suspended ceiling or wall mounted LED luminaire.
- PSU power supply unit
- LED luminaires that are recessed in a drop ceiling include a housing that can be fitted into common ceiling grid systems.
- the housing is commonly an extruded aluminum outer shell that is able to lay on the edge of the ceiling grids.
- the housing encloses the PSU and the LED module, which is generally attached to a heat sink.
- the housing also encloses any reflectors that are used in the luminaire as well as a diffuser which generally forms the floor of the housing.
- FIG 1 is an example of a prior art luminaire 10 recessed in a ceiling 12.
- the luminaire includes an elongated housing 14 having a top wall (not shown), two side walls (only one partially shown), and two end walls (one shown).
- the bottom of the housing is enclosed by a diffuser 16.
- Diffuser 16 is held in place by retaining lips 17, 18 which run along length "1" of the lower edge of the housing 14.
- a prior art LED luminaire 20 is shown in Figure 2 in cross-section.
- the luminaire 20 includes a housing having two regions, top region 22 and bottom region 24.
- Power supply unit 26 is mounted to the inside surface of the top housing region 22.
- LED module 28 is mounted to the underside of heat sink 30 which in turn is mounted with two rows of screws 32, 34 so that it is between the top housing region 22 and bottom housing region 24.
- a diffuser 36 sits in the opening of bottom housing region 24 and reflectors 38 fit within bottom housing region 24 between the LED module 28 and the diffuser 36.
- the diffuser 36, reflectors 38, and heat sink 30 In order to access and replace the PSU 26 of the prior art luminaire 20, the diffuser 36, reflectors 38, and heat sink 30 must first be removed.
- the diffuser 36 and reflectors 38 are lightweight and relatively simple elements to remove.
- the heat sink 30 is heavy and it is awkward to unfasten screws 32, 34 and lower the heat sink from the luminaire.
- heat sink 30 has mounted thereto the LED module 28 which is quite fragile and must be carefully handled to avoid damage.
- any wiring between the LED module 28 and the PSU 26 must be disconnected in order to remove and replace the PSU 26.
- the two rows of screws 32, 34 are removed to release the heat sink 30.
- the heat sink 30, along with any wiring connecting the heat sink 30, LED module 28, and the PSU 26, is then carefully removed.
- the PSU 26 is then exposed and can be removed and replaced.
- the LED module can be damaged during the removal and temporary storage of the heat sink.
- the heat sink is heavy and awkward and its removal from the housing can be dangerous.
- the present disclosure provides a field serviceable solid state lighting device luminaire assembly which allows for the easy and safe removal and replacement of the power supply unit and other internal components.
- the present disclosure provides a solid state lighting device luminaire assembly wherein the heat sink can be folded aside to allow access to and removal of the PSU.
- the present disclosure describes a solid state lighting device luminaire assembly having a housing with a first side wall, a second side wall, a first end wall, and a second end wall and a power supply unit located within the housing.
- the solid state lighting device module is connected to a heat sink which blocks access to the power supply unit.
- the heat sink folds or pivots to allow access to the power supply unit.
- the heat sink extends across the housing and is attached to the first side wall of the housing with a fixed attachment and to the second side wall of the housing with a pivot attachment so that when the fixed attachment is disconnected the heat sink stays attached to the housing at the pivot attachment and pivots towards the second side wall. When the heat sink is pivoted the power supply unit is exposed.
- the heat sink extends across the housing and is attached to the first end wall with a fixed attachment and to the second end wall with a removable attachment and the heat sink includes at least two segments connected by a hinged connection.
- the heat sink can be unattached from the second end wall and folded at the hinged connection to expose the power supply unit.
- the present disclosure provides an LED luminaire assembly.
- the LED luminaire 50 includes a single piece housing 52 which is extruded aluminum, another metal, or plastic.
- the PSU 54 is mounted to the inside of the housing 52 such as with two rows of bolts 56, 58.
- Diffuser 60 is held by inner pointing retaining lips 62, 64 that run the length of the lower edge of the housing 52. Similar retaining lips 17, 18 are shown for the prior art luminaire shown in Figure 1 running along length "1" of the lower edge of the housing 14.
- LED module 66 is mounted on the underside of heat sink 68 by screws, adhesives, or other means (not shown).
- Heat sink 68 is held in place on one side by fixed attachment to an inwardly directed lip 70 with screws or bolts 72 or temporary or quick release mechanisms such as magnets, tethers, chains, levers, pins, or clevis fasteners.
- the other edge of heat sink 68 is held in place by a pivoting or hinged attachment 74.
- Heat sink 68 is typically aluminum but can be another thermally conductive metal, thermally conductive plastic, or other plastic. Its thickness generally ranges between about 0.5 to 20 mm.
- the diffuser 60 and reflector 61 are removed from the luminaire assembly and placed aside.
- the screws 72 or other fastening devices are removed, allowing the heat sink 68 to hinge or pivot within the housing 52.
- FIG 4 illustrates the luminaire assembly with the heat sink 68 pivoted to provide access to the PSU 54. Screws 56, 58 can be removed, allowing removal of the PSU 54.
- the LED module 66 is protected from damage because it is between the heat sink 68 and housing wall 52. Furthermore, heat sink 68 is prevented from pivoting all the way against the housing wall 52 by the lip 62 which also provides protection to the LED module 66.
- Pivot attachment 74 is shown in more detail in Figure 5 .
- the pivot attachment is a longitudinal extruded center of rotation.
- a retaining finger 80 is extruded as part of housing wall 52.
- Heat sink 68 includes a divot 82 in the surface thereof which matches with retaining ball 84, also extruded as a segment of housing wall 52.
- Heat sink 68 rotates around retaining ball 84 on the divot 82 as indicated by the directional arrow and the end 86 of heat sink 68 is retained by retaining finger 80.
- Pivot attachment 74 can be segmental along the inside of housing 52 (one or more mechanisms 74) or can be a continuous element.
- Pivoting attachments can be used other than the embodiment shown by Figures 3-5 .
- other solutions can be a classic door hinge, or a hold open hinge.
- FIG. 6 illustrates another embodiment of a pivoting attachment that can be used to provide a pivoting heat sink.
- the heat sink 90 is fastened on one side to the housing wall inwardly directed lip 92 that is an integral part of the luminaire housing 94.
- This fixed attachment can be the same as described for the above embodiment.
- the other side of the heat sink 90 is fastened to the luminaire housing 97 via one or more hooks 96 extending through one or more holes of the heat sink 90.
- the heat sink 90 is loosened from the one side it swings or pivots providing access to the PSU.
- Figure 7 illustrates a pivot attachment similar to that shown in Figures 3-5 except that the mechanism is not an integral part of the housing 98. Instead the retaining finger 100 and retaining ball 102 are a pivot unit 104 attached to the housing 98 with screws or such 106, 108 or welded to the housing 98.
- Heat sink 68 can be attached to housing 52 on its non-pivoting side in a number of ways. One embodiment is shown in Figures 3-6 .
- Figure 8 illustrates another embodiment of a fixed attachment, wherein a snap-fit fastener 110 is used to fasten the heat sink 112 to the housing retaining lip 114.
- Figure 9 illustrates yet another embodiment of a fastening means 120 having a pin 122 that extends through the retaining lip 124 and the heat sink 126 and is kept in position by a snap ring 128.
- a number of other fastening devices can be used including screws, bolts, slide bolt latches, magnets, rivets, cotter pins, leaf springs, or wedges.
- FIG. 10 A second embodiment of a field serviceable luminaire assembly 148 is illustrated in Figure 10 .
- This embodiment includes a heat sink 164 that folds crosswise to provide access to the power supply unit 162, rather than pivoting lengthwise to provide access as in the previously described embodiment.
- this embodiment includes a housing 150 with a top panel 152, first side panel 154, second side panel (not shown in this view), and end walls 158, 160.
- Power supply unit (PSU) 162 is mounted to the top panel 152.
- Heat sink 164 has a plurality of LED modules 166 mounted thereto. Heat sink 164 has two connected, hinged segments, a permanent segment 168 and a removable segment 170. Segments 168, 170 appear to be shown as being of equal length but they can be of unequal length or the heat sink 164 can be divided into more than two segments. Segment 170 is shown folded in Figure 10 , so that the power supply unit 162 is exposed.
- the luminaire 148 could have multiple power supplies or there may be other components, such as controllers, sensors, terminal blocks, etc. that the service-operator may need to access.
- the pivoting segment need not be attached at an end of the housing 150. There may be three (or more) segments with the pivoting segment in the middle, for example.
- Heat sink 164 is shown with segment 170 folded downwards.
- heat sink 164 is mounted within housing 150 generally from one end wall 158 to the other end wall 160 and from side wall 154 to the opposite side wall (not shown).
- the permanent segment is mounted with screws, adhesive, or other attachment means to the housing.
- the removable segment 170 is attached to the permanent segment 168 with a hinged connection 172 and is attached to the inside of the end wall 160 with a tab 174 which mates in a slot (not shown) on the end wall 160.
- Other methods of removably attaching the removable segment 170 can be employed.
- hinged connection 172 should accommodate any electrical connections between segments 168 and 170.
- One embodiment of an appropriate hinged connection 172 is shown in Figures 11 and 12 .
- the permanent segment 168 and removable segment 170 are connected with two slotted hinges 180, 182.
- Electrical connection between permanent segment 168 and removable segment 170 is made with a connector 184.
- To disconnect and fold the removable segment 170 it is first pulled to disengage the connector 184 (this step is shown in Figure 12 ) and the slotted hinges allow movement of the removable segment 170 away from the permanent segment 168. The removable segment 170 can then be folded as shown in Figure 10 .
- the electrical connection between heat sink sections could be a pin connector, ribbon cable, flexible wire, or flexible printed-circuit board.
- the entire heat sink could be a flexible circuit board that has enough slack at the hinged joint that it can pivot without damaging the board.
- a slotted hinge would not be necessary and a standard hinge or other pivoting mechanism would suffice.
- This embodiment will desirably include reflectors and these must be removed to access the removable segment 170 of the heat sink 164.
- the removable segment 170 is then folded down and the power supply unit 162 can be serviced or removed.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
Description
- The present disclosure relates generally to LED luminaires and particularly to recessed or suspended ceiling and wall mounted LED luminaires. More particularly, the present disclosure relates to a system and method for replacing the power supply unit (PSU) and other internal components of a recessed or suspended ceiling or wall mounted LED luminaire.
- LED luminaires that are recessed in a drop ceiling include a housing that can be fitted into common ceiling grid systems. The housing is commonly an extruded aluminum outer shell that is able to lay on the edge of the ceiling grids. The housing encloses the PSU and the LED module, which is generally attached to a heat sink. The housing also encloses any reflectors that are used in the luminaire as well as a diffuser which generally forms the floor of the housing.
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Figure 1 is an example of aprior art luminaire 10 recessed in aceiling 12. The luminaire includes anelongated housing 14 having a top wall (not shown), two side walls (only one partially shown), and two end walls (one shown). The bottom of the housing is enclosed by adiffuser 16. Diffuser 16 is held in place by retaininglips housing 14. - A prior
art LED luminaire 20 is shown inFigure 2 in cross-section. Theluminaire 20 includes a housing having two regions,top region 22 andbottom region 24.Power supply unit 26 is mounted to the inside surface of thetop housing region 22.LED module 28 is mounted to the underside ofheat sink 30 which in turn is mounted with two rows ofscrews top housing region 22 andbottom housing region 24. Adiffuser 36 sits in the opening ofbottom housing region 24 andreflectors 38 fit withinbottom housing region 24 between theLED module 28 and thediffuser 36. - In order to access and replace the
PSU 26 of theprior art luminaire 20, thediffuser 36,reflectors 38, andheat sink 30 must first be removed. Thediffuser 36 andreflectors 38 are lightweight and relatively simple elements to remove. However theheat sink 30 is heavy and it is awkward tounfasten screws heat sink 30 has mounted thereto theLED module 28 which is quite fragile and must be carefully handled to avoid damage. Furthermore, any wiring between theLED module 28 and thePSU 26 must be disconnected in order to remove and replace thePSU 26. - In other words, to remove the
heat sink 30 from theprior art luminaire 20, the two rows ofscrews heat sink 30. Theheat sink 30, along with any wiring connecting theheat sink 30,LED module 28, and thePSU 26, is then carefully removed. The PSU 26 is then exposed and can be removed and replaced. - Issues with the prior art assembly are evident. The LED module can be damaged during the removal and temporary storage of the heat sink. The heat sink is heavy and awkward and its removal from the housing can be dangerous.
- The above-described shortcomings significantly limit the usefulness of field-serviceable LED luminaires (i.e. luminaires having a replaceable PSU). Therefore, there remains a need for an LED luminaire assembly which allows for the easy and safe removal and replacement of the PSU and other internal components.
- In at least one aspect, the present disclosure provides a field serviceable solid state lighting device luminaire assembly which allows for the easy and safe removal and replacement of the power supply unit and other internal components.
- In at least another aspect, the present disclosure provides a solid state lighting device luminaire assembly wherein the heat sink can be folded aside to allow access to and removal of the PSU.
- The present disclosure describes a solid state lighting device luminaire assembly having a housing with a first side wall, a second side wall, a first end wall, and a second end wall and a power supply unit located within the housing. The solid state lighting device module is connected to a heat sink which blocks access to the power supply unit. The heat sink folds or pivots to allow access to the power supply unit.
- In one aspect the heat sink extends across the housing and is attached to the first side wall of the housing with a fixed attachment and to the second side wall of the housing with a pivot attachment so that when the fixed attachment is disconnected the heat sink stays attached to the housing at the pivot attachment and pivots towards the second side wall. When the heat sink is pivoted the power supply unit is exposed.
- In another aspect, the heat sink extends across the housing and is attached to the first end wall with a fixed attachment and to the second end wall with a removable attachment and the heat sink includes at least two segments connected by a hinged connection. The heat sink can be unattached from the second end wall and folded at the hinged connection to expose the power supply unit.
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FIG. 1 illustrates a prior art ceiling mounted luminaire. -
FIG. 2 illustrates a schematic view of a prior art LED luminaire. -
FIG. 3 illustrates a schematic view of an LED luminaire assembly in accordance with at least one embodiment of the present disclosure. -
FIG. 4 is another schematic view of the LED luminaire assembly with the heat sink pivoted to allow access to the PSU. -
FIG. 5 is an up-close view of the pivot attachment of the heat sink to the housing. -
FIG. 6 is a view of another embodiment of a pivot attachment of the heat sink to the housing using a hook mechanism. -
FIG. 7 is a view of another embodiment of a pivot attachment of the heat sink to the housing wherein the pivot mechanism is not an integral part of the housing. -
FIG. 8 is a view of another embodiment of the fixed attachment of the heat sink to the housing using a snap-fit fastener. -
FIG. 9 is a view of another embodiment of the fixed attachment of the heat sink to the housing using a pin and snap ring. -
FIG. 10 illustrates an LED luminaire where the LED module is attached to a heat sink which is hinged on an alternative axis. -
Figure 11 illustrates one embodiment of a hinged connection between permanent and removable segments of a heat sink. -
Figure 12 illustrates the hinged connection ofFigure 11 in disengaged status. - The present disclosure may take form in various components and arrangements of components, and in various process operations and arrangements of process operations. The present disclosure is illustrated in the accompanying drawings, throughout which like reference numerals may indicate corresponding or similar parts in the various figures. The drawings are only for purposes of illustrating preferred embodiments and are not to be construed as limiting the disclosure. Given the following enabling description of the drawings, the novel aspects of the present disclosure should become evident to a person of ordinary skill in the art.
- The following detailed description is merely exemplary in nature and is not intended to limit the applications and uses disclosed herein. Further, there is no intention to be bound by any theory presented in the preceding background or summary or the following detailed description. While embodiments of the present technology are described herein primarily in connection with LED luminaires for use in recessed drop ceilings, the concepts are also applicable to other types of LED luminaires and luminaires having other light sources. In addition, while the invention is described herein as applicable to LED luminaires it should be understood that it is applicable to other solid-state lighting devices as well. For example light-emitting transistors or organic light-emitting diodes/devices (OLEDs) are applicable alternative SSL devices.
- In at least one aspect, the present disclosure provides an LED luminaire assembly. As shown in
Figure 3 , theLED luminaire 50 includes asingle piece housing 52 which is extruded aluminum, another metal, or plastic. The PSU 54 is mounted to the inside of thehousing 52 such as with two rows ofbolts - Diffuser 60 is held by inner pointing retaining
lips housing 52. Similarretaining lips Figure 1 running along length "1" of the lower edge of thehousing 14. -
LED module 66 is mounted on the underside ofheat sink 68 by screws, adhesives, or other means (not shown).Heat sink 68 is held in place on one side by fixed attachment to an inwardly directedlip 70 with screws orbolts 72 or temporary or quick release mechanisms such as magnets, tethers, chains, levers, pins, or clevis fasteners. The other edge ofheat sink 68 is held in place by a pivoting or hingedattachment 74. -
Heat sink 68 is typically aluminum but can be another thermally conductive metal, thermally conductive plastic, or other plastic. Its thickness generally ranges between about 0.5 to 20 mm. - To remove the
PSU 54, thediffuser 60 andreflector 61 are removed from the luminaire assembly and placed aside. Thescrews 72 or other fastening devices are removed, allowing theheat sink 68 to hinge or pivot within thehousing 52. -
Figure 4 illustrates the luminaire assembly with theheat sink 68 pivoted to provide access to thePSU 54.Screws PSU 54. TheLED module 66 is protected from damage because it is between theheat sink 68 andhousing wall 52. Furthermore,heat sink 68 is prevented from pivoting all the way against thehousing wall 52 by thelip 62 which also provides protection to theLED module 66. -
Pivot attachment 74 is shown in more detail inFigure 5 . In this embodiment, the pivot attachment is a longitudinal extruded center of rotation. A retainingfinger 80 is extruded as part ofhousing wall 52.Heat sink 68 includes adivot 82 in the surface thereof which matches with retainingball 84, also extruded as a segment ofhousing wall 52.Heat sink 68 rotates around retainingball 84 on thedivot 82 as indicated by the directional arrow and theend 86 ofheat sink 68 is retained by retainingfinger 80.Pivot attachment 74 can be segmental along the inside of housing 52 (one or more mechanisms 74) or can be a continuous element. - Pivoting attachments can be used other than the embodiment shown by
Figures 3-5 . For example, other solutions can be a classic door hinge, or a hold open hinge. -
Figure 6 illustrates another embodiment of a pivoting attachment that can be used to provide a pivoting heat sink. Theheat sink 90 is fastened on one side to the housing wall inwardly directedlip 92 that is an integral part of theluminaire housing 94. This fixed attachment can be the same as described for the above embodiment. The other side of theheat sink 90 is fastened to theluminaire housing 97 via one ormore hooks 96 extending through one or more holes of theheat sink 90. When theheat sink 90 is loosened from the one side it swings or pivots providing access to the PSU. -
Figure 7 illustrates a pivot attachment similar to that shown inFigures 3-5 except that the mechanism is not an integral part of thehousing 98. Instead the retainingfinger 100 and retainingball 102 are apivot unit 104 attached to thehousing 98 with screws or such 106, 108 or welded to thehousing 98. -
Heat sink 68 can be attached tohousing 52 on its non-pivoting side in a number of ways. One embodiment is shown inFigures 3-6 .Figure 8 illustrates another embodiment of a fixed attachment, wherein a snap-fit fastener 110 is used to fasten theheat sink 112 to thehousing retaining lip 114. -
Figure 9 illustrates yet another embodiment of a fastening means 120 having apin 122 that extends through the retaininglip 124 and theheat sink 126 and is kept in position by asnap ring 128. - A number of other fastening devices can be used including screws, bolts, slide bolt latches, magnets, rivets, cotter pins, leaf springs, or wedges.
- A second embodiment of a field
serviceable luminaire assembly 148 is illustrated inFigure 10 . This embodiment includes aheat sink 164 that folds crosswise to provide access to thepower supply unit 162, rather than pivoting lengthwise to provide access as in the previously described embodiment. - As shown in
Figure 10 , this embodiment includes ahousing 150 with atop panel 152,first side panel 154, second side panel (not shown in this view), and endwalls top panel 152.Heat sink 164 has a plurality ofLED modules 166 mounted thereto.Heat sink 164 has two connected, hinged segments, apermanent segment 168 and aremovable segment 170.Segments heat sink 164 can be divided into more than two segments.Segment 170 is shown folded inFigure 10 , so that thepower supply unit 162 is exposed. - It should also be noted that the
luminaire 148 could have multiple power supplies or there may be other components, such as controllers, sensors, terminal blocks, etc. that the service-operator may need to access. Also, the pivoting segment need not be attached at an end of thehousing 150. There may be three (or more) segments with the pivoting segment in the middle, for example. -
Heat sink 164 is shown withsegment 170 folded downwards. In use,heat sink 164 is mounted withinhousing 150 generally from oneend wall 158 to theother end wall 160 and fromside wall 154 to the opposite side wall (not shown). The permanent segment is mounted with screws, adhesive, or other attachment means to the housing. Theremovable segment 170 is attached to thepermanent segment 168 with a hingedconnection 172 and is attached to the inside of theend wall 160 with atab 174 which mates in a slot (not shown) on theend wall 160. Other methods of removably attaching theremovable segment 170 can be employed. - It should be noted that the hinged
connection 172 should accommodate any electrical connections betweensegments connection 172 is shown inFigures 11 and 12 . As shown inFigure 11 , thepermanent segment 168 andremovable segment 170 are connected with two slottedhinges permanent segment 168 andremovable segment 170 is made with aconnector 184. To disconnect and fold theremovable segment 170 it is first pulled to disengage the connector 184 (this step is shown inFigure 12 ) and the slotted hinges allow movement of theremovable segment 170 away from thepermanent segment 168. Theremovable segment 170 can then be folded as shown inFigure 10 . - The electrical connection between heat sink sections could be a pin connector, ribbon cable, flexible wire, or flexible printed-circuit board. Alternatively, the entire heat sink could be a flexible circuit board that has enough slack at the hinged joint that it can pivot without damaging the board. In that embodiment, a slotted hinge would not be necessary and a standard hinge or other pivoting mechanism would suffice.
- This embodiment will desirably include reflectors and these must be removed to access the
removable segment 170 of theheat sink 164. Theremovable segment 170 is then folded down and thepower supply unit 162 can be serviced or removed. - Alternative embodiments, examples, and modifications which would still be encompassed by the disclosure may be made by those skilled in the art, particularly in light of the foregoing teachings. Further, it should be understood that the terminology used to describe the disclosure is intended to be in the nature of words of description rather than of limitation.
- Those skilled in the art will also appreciate that various adaptations and modifications of the preferred and alternative embodiments described above can be configured without departing from the scope and spirit of the disclosure. Therefore, it is to be understood that, within the scope of the appended claims, the disclosure may be practiced other than as specifically described herein.
- Various aspects and embodiments of the present invention are defined by the following numbered clauses:
- 1. A solid state lighting device luminaire assembly comprising:
- a housing comprising a first side wall, a second side wall, a first end wall, and a second end wall;
- a power supply unit located within the housing;
- a solid state lighting device module connected to a heat sink;
- wherein the heat sink blocks access to the power supply unit when in use; and
- wherein the heat sink folds or pivots to allow access to the power supply unit.
- 2. The luminaire assembly of clause 1, wherein the heat sink extends across the housing and is attached to the first side wall of the housing with a fixed attachment and to the second side wall of the housing with a pivot attachment so that when the fixed attachment is disconnected the heat sink stays attached to the housing at the pivot attachment and pivots towards the second side wall.
- 3. The luminaire assembly of any preceding clause, wherein the power supply unit is inaccessible when the heat sink is attached with the fixed attachment and accessible when the heat sink pivots towards the second wall.
- 4. The luminaire assembly of any preceding clause, wherein the power supply unit can be removed from the luminaire when the heat sink is pivoted towards the second side wall.
- 5. The luminaire assembly of any preceding clause, wherein the pivot attachment comprises a retaining finger extending from the second housing wall, a retaining ball extending from the second housing wall, and a divot on the heat sink, wherein the divot mates with the retaining ball and the retaining finger connects with the end of the heat sink.
- 6. The luminaire assembly of any preceding clause, wherein the solid state lighting device module is between the second side wall and the heat sink when the heat sink is pivoted towards the second side wall.
- 7. The luminaire assembly of any preceding clause, wherein the second housing side wall comprises a lip that prevents the heat sink from pivoting all the way against the second side wall and prevents the solid state lighting device module from contacting the second side wall.
- 8. The luminaire assembly of any preceding clause, wherein there are multiple pivot attachments along the second housing side wall.
- 9. The luminaire assembly of any preceding clause, wherein the pivot attachment comprises one or more hooks attached to the second housing side wall that engage one or more holes in the heat sink.
- 10. The luminaire assembly of any preceding clause, wherein the heat sink extends across the housing and is attached at the first end wall with a permanent attachment and at the second end wall with a removable attachment;
wherein the heat sink comprises at least two segments connected by a hinged connection and wherein the heat sink can be unattached from the second end wall and can be folded at the hinged connection. - 11. The luminaire assembly of any preceding clause, wherein the heat sink comprises a first segment permanently attached to the first end wall and a second segment removably attached to the second end wall, and wherein the first and second segments are connected by the hinged connector.
- 12. The luminaire assembly of any preceding clause, wherein the hinged connector is one or more slotted hinges that allow movement of the segments longitudinally away from each other before the removable segment is folded.
- 13. The luminaire assembly of any preceding clause, wherein the heat sink comprises a first segment permanently attached to the first end wall and a second segment removably attached to the second end wall, and a third segment that is connected to at least one of the first segment or second segment with a hinged connector.
- 14. A solid state lighting device luminaire assembly comprising:
- a housing comprising a first side wall, a second side wall, a first end wall, and a second end wall;
- a power supply unit located within the housing;
- a heat sink extending across the housing and attached to the first side wall and the second side wall and blocking access to the power supply unit; and
- a solid state lighting device module connected to the heat sink;
- wherein the heat sink is attached to the first side wall with a fixed attachment and to the second side wall with a pivot attachment so that when the fixed attachment is disconnected the heat sink stays attached to the housing at the pivot attachment and pivots towards the second side wall.
- 15. The luminaire assembly of any preceding clause, wherein the power supply unit is inaccessible when the heat sink is attached with the fixed attachment and accessible when the fixed attachment is disconnected and the heat sink pivots towards the second wall.
- 16. The luminaire assembly of any preceding clause, wherein the power supply unit can be removed from the luminaire when the heat sink is pivoted towards the second side wall.
- 17. The luminaire assembly of any preceding clause, wherein the pivot attachment comprises a retaining finger extending from the second housing wall, a retaining ball extending from the second housing wall, and a divot on the heat sink, wherein the divot mates with the retaining ball and the retaining finger connects with the end of the heat sink.
- 18. The luminaire assembly of any preceding clause, wherein the solid state lighting device module is between the second side wall and the heat sink when the heat sink is pivoted towards the second side wall.
- 19. A solid state lighting device luminaire assembly comprising:
- a housing comprising a first side wall, a second side wall, a first end wall, and a second end wall;
- a power supply unit located within the housing;
- a heat sink extending across the housing and attached to the first end wall and the second end wall and blocking access to the power supply unit; and
- a solid state lighting device module connected to the heat sink;
- wherein the heat sink is attached to the first end wall with a fixed attachment and to the second end wall with a removable attachment and wherein the heat sink comprises at least two segments connected by a hinged connection; and
- wherein the heat sink can be unattached from the second end wall and can be folded at the hinged connection.
- 20. The luminaire assembly of any preceding clause, wherein the power supply unit is exposed when the heat sink is unattached from the second end and folded at the hinged connection.
Claims (15)
- A solid state lighting device luminaire assembly (50) comprising:a housing (52) comprising a first side wall, a second side wall, a first end wall, and a second end wall;a power supply unit (54) located within the housing (52);a solid state lighting device module (66) connected to a heat sink (68);wherein the heat sink (68) blocks access to the power supply unit (54) when in use; andwherein the heat sink (68) folds or pivots to allow access within the housing (52).
- The luminaire assembly of claim 1, wherein the heat sink (68) extends across the housing (52) and is attached to the first side wall of the housing with a fixed attachment (72) and to the second side wall of the housing with a pivot attachment (74) so that when the fixed attachment is disconnected the heat sink (68) stays attached to the housing at the pivot attachment and pivots towards the second side wall.
- The luminaire assembly of claim 2, wherein the power supply unit (54) is inaccessible when the heat sink (68) is attached with the fixed attachment and accessible when the heat sink pivots towards the second wall.
- The luminaire assembly of claim 2 or claim 3, wherein the power supply unit (54) can be removed from the luminaire when the heat sink (68) is pivoted towards the second side wall.
- The luminaire assembly of claim 2, 3 or 4, wherein the pivot attachment comprises a retaining finger (80) extending from the second housing wall, a retaining ball (84) extending from the second housing wall, and a divot (82) on the heat sink (68), wherein the divot (82) mates with the retaining ball (84) and the retaining finger (80) connects with the end of the heat sink (68).
- The luminaire assembly of any one of claims 2 to 5, wherein the solid state lighting device module (66) is between the second side wall and the heat sink (68) when the heat sink is pivoted towards the second side wall, wherein, preferably, the second housing side wall comprises a lip that prevents the heat sink (68) from pivoting all the way against the second side wall and prevents the solid state lighting device module (66) from contacting the second side wall.
- The luminaire assembly of any one of claims 2 to 6, wherein:there are multiple pivot attachments along the second housing side wall, and/orthe pivot attachment comprises one or more hooks attached to the second housing side wall that engage one or more holes in the heat sink (68).
- The luminaire assembly of any preceding claim, wherein the heat sink (164) extends across the housing (150) and is attached at the first end wall (158) with a permanent attachment and at the second end wall (160) with a removable attachment;
wherein the heat sink (164) comprises at least two segments (168, 170) connected by a hinged connection and wherein the heat sink (164) can be unattached from the second end wall and can be folded at the hinged connection. - The luminaire assembly of claim 8, wherein the heat sink (154) comprises a first segment (168) permanently attached to the first end wall and a second segment (170) removably attached to the second end wall, and wherein the first and second segments (168, 170) are connected by the hinged connector.
- The luminaire assembly of claim 8 or claim 9, wherein the hinged connector is one or more slotted hinges (180, 182) that allow movement of the segments longitudinally away from each other before the removable segment is folded.
- The luminaire assembly of claim 8, 9 or 10, wherein the heat sink (154) comprises a first segment (168) permanently attached to the first end wall and a second segment (170) removably attached to the second end wall, and a third segment that is connected to at least one of the first segment or second segment with a hinged connector.
- The luminaire assembly of any preceding claim, wherein:the heat sink (68) extends across the housing (52) and is attached to the first side wall and the second side wall and blocks access to the power supply unit (54); andthe heat sink (68) is attached to the first side wall with a fixed attachment and to the second side wall with a pivot attachment so that when the fixed attachment is disconnected the heat sink (68) stays attached to the housing at the pivot attachment and pivots towards the second side wall.
- The luminaire assembly of claim 12, wherein the power supply unit (54) is inaccessible when the heat sink (68) is attached with the fixed attachment and accessible when the fixed attachment is disconnected and the heat sink (68) pivots towards the second wall.
- The luminaire assembly of claim 1, wherein:the heat sink (68) extending across the housing (52) and attached to the first end wall and the second end wall and blocking access to the power supply unit (54); andthe heat sink (68) is attached to the first end wall with a fixed attachment and to the second end wall with a removable attachment and wherein the heat sink comprises at least two segments connected by a hinged connection; andheat sink (68) can be unattached from the second end wall and can be folded at the hinged connection.
- The luminaire assembly of claim 14, wherein the power supply unit (54) is exposed when the heat sink (68) is unattached from the second end and folded at the hinged connection.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14170803.2A EP2952806A1 (en) | 2014-06-02 | 2014-06-02 | Pivoting heat sink for LED luminaire |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14170803.2A EP2952806A1 (en) | 2014-06-02 | 2014-06-02 | Pivoting heat sink for LED luminaire |
Publications (1)
Publication Number | Publication Date |
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EP2952806A1 true EP2952806A1 (en) | 2015-12-09 |
Family
ID=50972451
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP14170803.2A Withdrawn EP2952806A1 (en) | 2014-06-02 | 2014-06-02 | Pivoting heat sink for LED luminaire |
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EP (1) | EP2952806A1 (en) |
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WO2017099934A1 (en) * | 2015-12-10 | 2017-06-15 | GE Lighting Solutions, LLC | Lighting fixture with replaceable light engine |
EP3260773A1 (en) * | 2016-06-22 | 2017-12-27 | Self Electronics Co., Ltd. | Flipping installation device for led strip lighting |
US9863591B2 (en) | 2015-12-10 | 2018-01-09 | GE Lighting Solutions, LLC | Lighting fixture with replaceable light engine |
EP3369986A1 (en) * | 2017-03-01 | 2018-09-05 | H4X e.U. | Luminaire |
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US20060002111A1 (en) * | 2003-07-03 | 2006-01-05 | David Munson | Apparatus and method for safe illumination of fine art works |
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US20130223065A1 (en) * | 2012-02-24 | 2013-08-29 | Kuan-Hong Hsieh | Street lamp |
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US20060002111A1 (en) * | 2003-07-03 | 2006-01-05 | David Munson | Apparatus and method for safe illumination of fine art works |
US20120162980A1 (en) * | 2010-12-28 | 2012-06-28 | GE Lighting Solutions, LLC | Led retrofit module for roadway fixture |
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Publication number | Priority date | Publication date | Assignee | Title |
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WO2017099934A1 (en) * | 2015-12-10 | 2017-06-15 | GE Lighting Solutions, LLC | Lighting fixture with replaceable light engine |
US9863591B2 (en) | 2015-12-10 | 2018-01-09 | GE Lighting Solutions, LLC | Lighting fixture with replaceable light engine |
EP3260773A1 (en) * | 2016-06-22 | 2017-12-27 | Self Electronics Co., Ltd. | Flipping installation device for led strip lighting |
EP3369986A1 (en) * | 2017-03-01 | 2018-09-05 | H4X e.U. | Luminaire |
US20180252376A1 (en) * | 2017-03-01 | 2018-09-06 | H4X E.U. | Luminaire |
US10690306B2 (en) | 2017-03-01 | 2020-06-23 | H4X E.U. | Luminaire |
AT519708A3 (en) * | 2017-03-01 | 2022-03-15 | H4X Eu | lamp |
AT519708B1 (en) * | 2017-03-01 | 2022-11-15 | H4X Eu | lamp |
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