WO2011082457A1 - Luminaire à éclairage dirigé vers le bas - Google Patents

Luminaire à éclairage dirigé vers le bas Download PDF

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Publication number
WO2011082457A1
WO2011082457A1 PCT/AU2011/000022 AU2011000022W WO2011082457A1 WO 2011082457 A1 WO2011082457 A1 WO 2011082457A1 AU 2011000022 W AU2011000022 W AU 2011000022W WO 2011082457 A1 WO2011082457 A1 WO 2011082457A1
Authority
WO
WIPO (PCT)
Prior art keywords
downlight
ceiling
housing
aperture
diameter
Prior art date
Application number
PCT/AU2011/000022
Other languages
English (en)
Inventor
Jason Gerard
David Leske
Original Assignee
Gerard Lighting Pty Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from AU2010900083A external-priority patent/AU2010900083A0/en
Application filed by Gerard Lighting Pty Ltd filed Critical Gerard Lighting Pty Ltd
Priority to AU2011204751A priority Critical patent/AU2011204751A1/en
Publication of WO2011082457A1 publication Critical patent/WO2011082457A1/fr

Links

Classifications

    • 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
    • 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
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/75—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with fins or blades having different shapes, thicknesses or spacing
    • 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
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
    • 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
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/77—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
    • 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
    • F21V21/04—Recessed bases
    • 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 invention relates to downlights, and in one form, to downlights having Light Emitting Diodes (LEDs) as their light source.
  • LEDs Light Emitting Diodes
  • Downlights are lights that in use, are installed in a recess or hole in a ceiling for example, with the light source facing down and into the room covered by the ceiling. Downlights have become very popular in recent times, however, they suffer from a number of disadvantages.
  • One disadvantage in particular is the difficulty in installing the lights in the ceiling. Since the downlights must be installed into the ceiling space or cavity, it is necessary for the installer to access the ceiling space or cavity, or in some products, remove part or all of a mounting ring or collar securing the downlight to the ceiling. This requirement increases the time, difficulty and complexity of installing and replacing downlights. This can also lead to an increase in the costs of installation.
  • a downlight housing for installation in a ceiling space above a ceiling via an aperture in the ceiling, the downlight housing comprising:
  • the base has a diameter greater than or substantially equal to a diameter of any other portion of the downlight from the base to the top.
  • the diameter of the base is about 48mm.
  • the diameter of the top is less than or equal to about 42mm.
  • the downlight housing comprises a heatsink.
  • the heatsink is in use, able to dissipate at least about 7Watts.
  • the heatsink is at least about 45mm in length.
  • a downlight for installation in a ceiling space via an aperture in the ceiling, the aperture in the ceiling having an effective diameter, the downlight comprising:
  • a light transmission medium comprising:
  • the base has a diameter greater than or substantially equal to a diameter of any other portion of the downlight from the base to the top.
  • the diameter of the base is about 48mm.
  • the diameter of the top is less than or equal to about 42mm.
  • the downlight housing comprises a heatsink.
  • the heatsink is in use, able to dissipate at least about 7Watts. In one form, the heatsink is at least about 45mm in length.
  • the light source is one or more Light Emitting Diodes (LEDs).
  • LEDs Light Emitting Diodes
  • the downlight further comprises a front face comprising at least one air vent.
  • the at least one air vent is in fluid communication with a heatsink of the downlight.
  • a method of installing a downlight in a ceiling comprising:
  • a downlight housing for installation in a ceiling space above a ceiling, via an aperture in the ceiling, the aperture in the ceiling having an effective diameter, the diameter of the top of the downlight housing being less than or substantially equal to the effective diameter of the aperture in the ceiling.
  • the effective diameter of the aperture in the ceiling is defined by a collar mounted about the aperture in the ceiling. In another form, the effective diameter is defined by the aperture in the ceiling.
  • the diameter of the top of the downlight housing is less than or equal to about 42mm.
  • the downlight housing comprises a heatsink.
  • the heatsink is in use, able to dissipate at least about 7Watts. In one form, the heatsink is at least about 45mm in length.
  • a downlight for installation into a ceiling space via an aperture in the ceiling, the aperture in the ceiling having an effective diameter, the downlight comprising:
  • the diameter of the top of the downlight housing is less than or substantially equal to the effective diameter of the aperture in the ceiling.
  • the effective diameter of the aperture in the ceiling is defined by a collar mounted about the aperture in the ceiling.
  • the effective diameter is defined by the aperture in the ceiling.
  • the diameter of the top of the downlight housing is less than or equal to about 42mm.
  • the downlight housing comprises a heatsink.
  • the downlight further comprises a front face comprising at least one air vent.
  • the at least one air vent is in fluid communication with a heatsink of the downlight.
  • a downlight for installation into a ceiling space above a ceiling comprising:
  • the downlight housing comprises a heatsink.
  • the air vent is in fluid communication with the heatsink.
  • the front face comprises a plurality of apertures to provide air vents.
  • the plurality of air vents are arranged around a periphery of the front face.
  • a downlight for installation into a ceiling space above a ceiling comprising:
  • light transmission medium is a lens.
  • the light transmission medium is a diffuser.
  • a method of replacing a light transmission medium in a downlight comprising:
  • each step of the method is performed while the downlight is installed.
  • a downlight housing for installation in a ceiling space above a ceiling via an aperture in the ceiling, the downlight housing comprising:
  • the base has a footprint greater than or substantially equal to a footprint of any other portion of the downlight housing from the base to the top.
  • a downlight for installation in a ceiling space via an aperture in the ceiling comprising:
  • a downlight housing comprising:
  • the base has a footprint greater than or substantially equal to a footprint of any other portion of the downlight from the base to the top.
  • the downlight has a base for being received in an aperture in a ceiling.
  • the diameter or footprint of any portion from the base to the top of the downlight is less than or substantially equal to the diameter or footprint of the base. This allows the downlight to be installed from below the ceiling.
  • the downlight is an LED downlight.
  • Figure 1 - shows a typical application of a plurality of downlights
  • Figure 2 - shows a rear perspective view of a downlight according to one aspect
  • Figure 3 - shows a front perspective view of the downlight of Figure 2;
  • Figure 4 - shows a side view of the downlight of Figures 2 and 3 installed in a
  • Figure 5 - shows a rear perspective view of a modified form of the downlight of
  • Figure 6 A - shows a first step of installing the downlight into the ceiling space
  • Figure 6B - shows a further step of installing the downlight into the ceiling space
  • Figure 6C - shows the downlight installed in the ceiling space after the steps shown
  • Figure 7 - shows a rear perspective view of a further modified form of the downlight
  • Figure 8 - shows a front perspective view of the downlight of Figure 7;
  • Figure 9A - shows a front face of the downlight with apertures
  • Figure 9B - shows an alternative front face of the downlight with no apertures
  • Figure 10 - shows an exploded view of the components of the downlight
  • Figure 1 1 A - shows a top view of the LED mounting disc
  • Figure 1 IB - shows a side view of the LED mounting disc of Figure 1 1 A;
  • Figure 1 1C - shows a front view of the LED mounting disc of Figure 1 1 A;
  • Figure 1 1 D - shows an underside view of the LED mounting disc of Figure 11 A;
  • Figure 12 - shows another arrangement of Figure 4;
  • Figure 13 A - shows a perspective view of the downlight retaining ring of Figure 12;
  • Figure 13B - shows a top view of the downlight retaining ring of Figure 13 A;
  • Figure 14 - shows another arrangement of Figure 4;
  • Figure 15 - shows a further arrangement of Figure 4.
  • Figure 16 - shows yet a further arrangement of Figure 4;
  • Figure 17 A - shows yet a further arrangement illustrating multiple aperture
  • Figure 17B - shows the collar of Figure 17
  • Figure 18 - shows a side view of an embodiment of the downlight and/or housing of one aspect
  • Figure 19 - shows a side view of an alternative embodiment of the downlight and/or housing of Figure 18;
  • Figure 20A - shows a downlight and/or downlight housing according to another aspect
  • Figure 20B - shows the downlight or downlight housing of Figure 20A installed
  • Figure 20C - shows a variation of the housing or downlight of Figure 20A
  • Figure 20D - shows a further variation of the housing or downlight of Figure 20A
  • Figure 20E - shows a further variation of the housing or downlight of Figure 20A
  • Figure 20F - shows a further variation of the housing or downlight of Figure 20A
  • Figure 21 - is a flowchart of a method of installing a downlight
  • Figure 22A - shows a downlight according to another aspect relating to an air vent
  • Figure 22B - shows a different view of the downlight of Figure 22A
  • Figure 23 - shows a side view of the downlight of Figure 22A
  • Figure 24 - shows a downlight with a plurality of air vents
  • Figure 25A - shows a first stage in changing a lens of the downlight
  • Figure 25B - shows a second stage in changing the lens of the downlight
  • Figure 25C - shows a third stage in changing the lens of the downlight
  • Figure 25D - shows the final stage in changing the lens of the downlight
  • Figure 26 - is a flowchart of a method of changing a lens in the downlight.
  • DETAILED DESCRIPTION Figure 1 shows a typical application of a plurality of downlights 100 installed in a ceiling space (not shown) above ceiling 2, to illuminate room space 1.
  • Downlights 100 when installed may be completely flush with the surface of ceiling 2 and not protrude into room space 1, or may protrude slightly beyond the surface of the ceiling 2 into room space 1 as will be appreciated by the person skilled in the art.
  • downlight 100 may have any suitable light source, including halogen, incandescent and/or Light Emitting Diode (LED), or a combination of one or more of these.
  • LEDs Light Emitting Diodes
  • FIG. 2 shows a rear perspective view of a downlight 100 according to one aspect described herein.
  • downlight 100 has a body or housing 110 which is formed as a heatsink to dissipate heat generated by jthe light source, into the ceiling space.
  • the heatsink has 5 fins 1 1 1 extending from each of two sides of the downlight 100.
  • a downlight electrical connector 150 which may be provided as a recess, or as a protrusion, to connect to an electrical connector as will be described in more detail below.
  • Figure 3 shows a front perspective view of the downlight 100 of Figure 2.
  • downlight housing 110 with heatsink fins 11 1, base 1 12 with lip 1 13, and lens 130 retained to downlight housing 1 10 by retaining clip 120.
  • Lip 1 13 has one r more notches 1 14, the purpose of which will be described in more detail further below.
  • FIG 4 shows the downlight 100 installed in the ceiling space 5. It is shown secured to collar 3. The manner of securement can be by any suitable means as will be understood by the person skilled in the art.
  • downlight housing 110 in this embodiment, comprises a heatsink with fins 111 as shown in Figures 2 and 3.
  • the heatsink assists in radiating heat generated by the light sources (e.g. LEDs) into the ceiling space 5. While most of the examples provided herein show the housing 1 10 comprising a heatsink with fins 111 , it will be appreciated that the various aspects described herein are equally applicable to downlights without a heatsink body, such as that shown in Figure 5.
  • Figure 5 shows a downlight 1 0 with housing 1 10 which comprises a plain surface, with a downlight electrical connector 150.
  • Figures 6A to 6C show the downlight 100 and a method of installing the downlight, according to one aspect.
  • of the downlight 100 is less than or equal to the diameter 0 2 of the aperture 4 in the ceiling 2, as defined by collar 3 .
  • 0i is the maximum diameter of the downlight 100 that will not protrude into the room space 1 once the downlight is installed, and it will be understood that portions of the downlight 100, such as for example, lip 1 13, which may protrude beyond the lower surface of ceiling 2 into room space 1, may have a diameter greater than that of the aperture as defined by collar 3.
  • downlight 100 from below ceiling 2 rather than from above ceiling 2 in ceiling space 5. Because downlight diameter 0i is equal to or less than aperture diameter 02 , downlight 100 may be slid into ceiling space 5 through the aperture 4, from below.
  • Figure 6A shows the first step of installation of downlight 100, in which an electrical supply system is accessed by, for example, pulling lead 21 1 and supply electrical connector 210 through the aperture 4, and inserting supply electrical connector 210 into downlight electrical connector 150 (see Figures 2 and 5 for example).
  • the downlight 100 is then inserted into aperture 4 as shown in Figure 6B, until it is fully inserted (for example, until a portion of downlight 100 that has a diameter greater than the diameter of aperture 4 reaches aperture 4, or as determined by any other suitable means), as shown in Figure 6C. Downlight 100 is then secured to collar 3 or other securement point as will be understood by the person skilled in the art.
  • is less than or equal to about 50mm. In another embodiment, the maximum diameter ⁇ ⁇ is less than or equal to about 42mm. It will be understood that it is possible for the maximum diameter 0i to be equal to the diameter 0 2 of the aperture 4, and still be able to pass through, due to some minimal compression and/or mechanical deformation. In the case where the maximum diameter is less than the aperture diameter, the downlight 100 will pass through aperture 4 easily.
  • downlight 100 may take on other dimensions and proportions, within the constraints of the diameter relationships set out above.
  • downlight 100 can be a squatter configuration as shown in Figures 7 and 8, with like elements numbered accordingly.
  • FIG 9A shows apertures 121 in a front face 102 of downlight 100, in this example, in retaining clip 120 which retains light transmission medium 130, which is in this case a lens.
  • Front face 102 in this example is the face that is visible from the room space 1 when the downlight 100 is installed and is in this example, provided by light transmission medium or lens 130, retaining clip 120 and lip 1 13.
  • Apertures 121 provide for airflow through the apertures, which are in fluid communication with channels formed between fins 1 1 1 via fin apertures 11 la as shown for example, in Figure 7. This enables convection currents to be established, which further increase the efficiency of the heat dissipation provided by the heatsink of downlight housing 1 10.
  • apertures 121 are optional, and in some embodiments, there may not be these apertures, as is illustrated in Figure 9B.
  • FIG 10 shows an exploded view of the components of one embodiment of downlight 100, illustrating the simplicity of the construction.
  • Downlight housing 1 10 (in this example comprising a heatsink with fins 1 1 1) provides the main body of downlight 100.
  • Light source 180 for example one or more Light Emitting Diodes or LEDs
  • the LEDs are electrically connected to the power supply via LED connector pins 161 (see Figure 1 1 ) and Printed Circuit Board (PCB) 170.
  • PCB 170 is in turn electrically connected to downlight electrical connector 150.
  • PCB 170 may be mounted to housing 1 10 into a PCB slot and may be clipped into the heatsink vent holes or apertures, to thereby expose the PCB to the cooling convection currents to maintain appropriate operating temperatures of the circuitry on PCB 170.
  • Light transmission medium 130 (for example a lens) is placed in the base 1 12 of the downlight 100 and may be retained therein by retaining clip 120.
  • retaining clip 120 comprises a clip with clip fingers 121 that engage with corresponding recesses in the housing 1 10, that allows easy removal from downlight 100 even when downlight 100 is installed in the ceiling 2. This allows easy replacement of the lens 130 by simply unclipping the retaining clip from the base 1 12, removing the current lens 130, inserting a new light transmission medium 130' (for example new lens 130') and re- clipping the retaining clip 120 into the base 1 12. This allows the consumer to easily change the lens or light transmission medium, for example to vary the lighting effect such as beam angle or to replace the lens with a diffuser, without the need of a professional installer or removing the installed downlight 100.
  • the assembled product is as shown in Figures 2, 3, 7 or 8.
  • notches 1 14 in lip 1 13 may be used to engage with corresponding protrusions in collar 3 in the ceiling 2. If the corresponding protrusions in the collar do not align with the notches 1 14, the downlight 100 will not be able to be installed. This acts to prevent a downlight of a different or non-conforming type being installed in a pre installed collar. This optional feature will be described in more detail further below.
  • FIG. 1 1 A shows a top 5 view of disc 160.
  • LEDs 180 (see Figures 1 IB, 1 1C and 1 I D) mounted to the
  • LED connector pins 161 which pass from the mounting side facing the base of downlight 100, through a disc aperture 162, to the top side of disc 160, for connection to the power supply via PCB 170 and downlight electrical connector I SO as previously described.
  • LED connector pins 161 incorporate an0 insulating part 163 to prevent short circuiting of pins 161 to any other conductive element on disc 160.
  • FIG. 11 D shows the opposite side, or underside view, of disc 160, showing pins 161 for electrical connection to PCB 170.
  • S Figure 12 shows a particular practical arrangement in which a collar 3 is inserted into the aperture in the ceiling 2 and retained therein via spring-loaded arms 3a and 3b as will be understood by the person skilled in the art.
  • Downlight 100 is then inserted into a downlight retaining ring 6 (see Figures 13A and 13B) which may be retained therein by various means, including screw fir, friction fit, or further spring retainers contained on retaining ring 6.
  • the assembly of the downlight 100 and the retaining0 ring 6 is then inserted through the aperture formed by the inner or minimum diameter of collar 3
  • Figure 13A shows a perspective view of downlight retaining ring 6, with wall 6a, outer flange 6b,5 inner platform 6c and, in one embodiment, protrusion 6d.
  • Figure 13B shows a top view of downlight retaining ring 6 with like elements labelled accordingly.
  • protrusions 6d locate with notches 1 14 in lip 1 13 of downlight 100 as previously described. If a downlight does not have corresponding notches 114, the downlight will not be able to be retained by downlight retaining ring 6.
  • FIG. 14 shows such an arrangement in which a collar 3 is installed from above ceiling 2 to retain downlight 100 with retainers 3b.
  • the aperture 4 through which at least a portion of the downlight 100 must pass is that defined by the ceiling shown as 02.
  • the collar may support a gimball 7 as shown in Figure 15.
  • at least the top of downlight 100 must be able to pass through the minimum diameter, or "effective" diameter, which in this case, is defined by the top opening of gimball 7, indicated again as 02.
  • a collar 3 may be formed so as to have 2 or more diameters, to allow for example, a part of the downlight 100 to be recessed into the collar and the top part of the downlight to pass through to the ceiling space 5, through a second or subsequent diameter.
  • this arrangement is shown in which the effective diameter 02 is shown at the top of the collar 3, as well as a lower, larger diameter, shown at the bottom of collar 3, shown as diameter 03.
  • the maximum diameter of the downlight need not be less than or equal to all diameters provided by the collar.
  • the diameter 05 of the top of the downlight 100 is less than or equal to the effective or minimum diameter of the aperture defined by the collar or the aperture in the ceiling itself, to allow the top of the downlight 100 to access the ceiling space 5 for more efficient heat dissipation.
  • Figure 17A shows an arrangement in which the collar 3 presents a number of apertures of different diameters.
  • the largest, 01 is at the lowest opening of the collar with respect to the installer
  • 03 receives the lip 1 13 of downlight 100
  • 04 receives a lower portion of the downlight housing 110 and the smallest, or effective diameter 02, allows the top 101 of the downlight 100 to pass through it and into the ceiling space 5.
  • Figure 17B shows the collar 3 with the various diameters described above.
  • Figure 18 shows a specific embodiment of the downlight housing 1 10 and or downlight 100.
  • the diameter is about 50mm.
  • the diameter is about 48mm.
  • the diameter is about 42mm.
  • the diameter is about 39mm, but may be less than or equal to about 42mm. In one embodiment, the top of the housing/downlight is about 80mm high from the bottom.
  • Figure 19 shows another possible embodiment of a shorter housing/downlight.
  • the lip or bottom the diameter is about 50mm.
  • the diameter is about 48mm.
  • the diameter is about 42mm.
  • the diameter is about 39mm but may be less than or equal to about 42mm.
  • the top of the housing/downlight is about 60mm high from the bottom.
  • the length of the heatsink is at least about 45mm, and in some embodiments, can range between about 45mm to about 100mm, including about 45mm, about 50mm, about 60mm, about 70mm, about 80mm, about 90mm, about 95mm and about 100mm.
  • a downlight housing 1 10 for installation in a ceiling space above a ceiling via an aperture in the ceiling, the downlight housing 1 10 comprising a top 101 and a base 1 12 for location in the aperture.
  • the base 1 12 has a diameter 0base greater than or substantially equal to a diameter of any other portion of the downlight from the base 1 12 to (and including) the top 101.
  • the diameter of any other portion is illustrated in Figure 20A as diameters 0A, 0B, 0C, 0D, 0E, 0F, 0G,0H, 01 and 0top. These are representative examples of any portion of the housing 1 10 from the base 1 12 to the top 101.
  • the diameters of any of these portions are less than or substantially equal to the diameter 0base of base 1 12.
  • the lip 1 13 can have a diameter greater than the diameter 0base of the base 1 12.
  • lip 1 13 may protrude into the room space as previously described and as shown again in Figure 20B.
  • Figure 20C, 20D, 20E and 20F show further possible variations and configurations that are possible in accordance with this aspect.
  • base 1 12 that is located in the aperture when installed may itself have a range of diameters, however in these cases, the diameter 0base of the base 1 12 will be taken to be the largest diameter of the portion that is received within the aperture of the ceiling.
  • the base and the remainder of the downlight housing or downlight form a cylinder with the diameter of all portions all the way to the top from the base are the same or substantially the same as that of the base.
  • the diameter of some portions can be less than the diameter of the base while the diameter of other portions can be substantially equal to the diameter of the base and this may vary over the length of the housing or downlight from the base to the top.
  • the base 1 12 is not circular has thus has no well defined "diameter".
  • the edge of base 1 12 defines a footprint of the base. In this aspect, no part of any of the portions above the base extends beyond the footprint defined by the diameter.
  • the footprint is square. In some embodiments, the footprint is rectangular. In some embodiments the footprint is octagonal. In some embodiments, the footprint is hexagonal. It will be understood that the footprint can be any 2 -dimensional shape.
  • At least a part of one or more other portions above the base can extend to the edge of the footprint. In other embodiments, the other portions will lie within the footprint.
  • the footprint of the base is greater than or substantially equal to a footprint of any other portion of the downlight or downlight housing from the base to the top.
  • the diameter of the base 1 12 is about 48mm and the diameter of the top 101 is about 39mm.
  • FIG 21 is a flowchart of the method of installing a downlight as shown with reference to Figures 6A to 6C.
  • an electrical supply connector 210 is accessed from the ceiling space via the aperture in the ceiling 2.
  • the supply connector 210 is connected to the downlight 100.
  • the downlight 100 is inserted into the ceiling space via the aperture and then in step 530, the downlight 100 is secured.
  • the downlight may be secured by various means including securing to a collar 3 mounted about the aperture in the ceiling, as in Figure 6C for example, or to a gimbal 7 as shown in Figure 15 for example.
  • Figure 22A shows a downlight 200 exhibiting another aspect. This aspect relates to the provision of an aperture 240 in a front face 260 of the downlight 200.
  • the front face 260 comprises a rim 220 surrounding a light transmission medium 230 such as a lens 230at the front face, and is the face that is exposed to the room 1 when the downlight is installed.
  • Aperture 240 provides an air vent that allows hot air generated about the downlight 200 in the ceiling space when in use, to exit into the larger room space.
  • Figure 22B shows a different perspective view of the downlight 200 showing a corresponding aperture 241 above the base of the downlight 200.
  • FIG. 24 shows an embodiment in which the front face comprises a plurality of apertures 240a, 240b, 240c, 240d, 240e, 240f, 240g and 240h.
  • apertures 240 could be provided as suitable, including 1 , 2, 3, 4, 5, 6, 7, 8, 9, 10, 1 1 , 12, 13, 14, 15 or more apertures. It will also be appreciated that in some embodiments such as illustrated in Figure 24, no heatsink is present, while in other embodiments, such as shown in Figures 8, 22A, 22B and 23 for example, there is a heatsink.
  • Figures 25A to 25D show a series of steps according to another aspect.
  • This aspect relates to the ability to replace a light transmission medium such as a lens or a diffuser, from below, when the downlight is installed, without having to remove the downlight from its installed position.
  • this aspect is facilitated by the provision of retaining clip 120 which in this embodiment, also provides rim 220 as shown in Figure 22A.
  • retaining clip 120 can in some embodiments, also have apertures 121 or 240 as previously described, however, in this aspect, there need not be any apertures.
  • retaining clip 120 holds light transmitting medium 130 in place in downlight 100 at the front face of the downlight.
  • light transmitting medium 130 is a lens, however, this could equally be other light transmitting media such as a diffuser, or an otherwise transparent or translucent disc.
  • Light source 160 in this embodiment is one or more LEDs, but could equally be any other suitable light source.
  • retaining clip 120 is removed from the downlight by unclipping retaining clip 120 via clips 121 and pulling it away from downlight 100.
  • Lens 130 then also comes free from downlight 100, in some embodiments, by the mere virtue of gravity.
  • lens 130 is replaced with a new lens 130'. This may be desired simply to change the effect of the light transmission to provide a more focussed light path or a more diffuse one. In some cases, a coloured disc 130 may be inserted to provide a coloured light output.
  • retaining clip 120 is clipped back into downlight 100 with the new lens 130' in place and the replacement is complete.
  • Figure 26 is a flowchart of the steps of the method of replacing the light transmitting medium as described above with reference to Figures 25A-25D.
  • This example refers to the replacement of a lens, but it will be appreciated that the method and steps could equally be applicable to the replacement of any light transmitting medium, including those listed previously.
  • step 600 the retaining clip 120 is removed from the installed downlight.
  • step 610 the lens 130 (or other light transmitting medium) is removed from the installed downlight.
  • step 620 a new or different lens 130 (or other light transmitting medium) is inserted into the downlight and then in step 630, the retaining clip 120 is replaced in the downlight 100 to complete the replacement process.
  • the steps of the method of Figure 26 are performed while the downlight 100 is already installed. This provides a significant advantage in that a user is able to replace the light transmitting medium 130 without having to uninstall the downlight from the ceiling or wall, or other installed location.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

La présente invention a trait à un luminaire à éclairage dirigé vers le bas et à un logement de luminaire à éclairage dirigé vers le bas. Selon un aspect, le luminaire à éclairage dirigé vers le bas est équipé d'une base destinée à être reçue dans une ouverture dans un plafond. Le diamètre d'une partie quelconque de la base à la partie supérieure du luminaire à éclairage dirigé vers le bas est inférieur ou sensiblement égal au diamètre de la base. Ceci permet au luminaire à éclairage dirigé vers le bas d'être installé par un emplacement situé en dessous du plafond. Dans une forme, le luminaire à éclairage dirigé vers le bas est un luminaire à éclairage dirigé vers le bas à diodes électroluminescentes.
PCT/AU2011/000022 2010-01-11 2011-01-10 Luminaire à éclairage dirigé vers le bas WO2011082457A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2011204751A AU2011204751A1 (en) 2010-01-11 2011-01-10 Downlight

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2010900083 2010-01-11
AU2010900083A AU2010900083A0 (en) 2010-01-11 LED downlight

Publications (1)

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WO2011082457A1 true WO2011082457A1 (fr) 2011-07-14

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AU (1) AU2011204751A1 (fr)
WO (1) WO2011082457A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2490956A (en) * 2011-05-20 2012-11-21 Astro Lighting Ltd Lighting unit with demountable lamp housing, fireproofing and removable waterproofing structure
WO2019094758A1 (fr) 2017-11-09 2019-05-16 R&B Wagner, Inc. Ensemble module d'éclairage et méthode d'utilisation
CN110375238A (zh) * 2019-07-20 2019-10-25 江苏恒百利照明科技有限公司 一种新型gx53筒灯

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB942630A (en) * 1962-02-20 1963-11-27 Century Lighting Inc Downlight and device for varying the spectral quality thereof
CA2371682A1 (fr) * 2001-02-15 2002-08-15 3F Filippi S.P.A. Luminaire, particulierement du type plafonnier ou du type a raccord encastre dans les plafonds et les murs
WO2008128635A1 (fr) * 2007-04-23 2008-10-30 Zumtobel Lighting Gmbh Lampe à refroidissement
US20090097262A1 (en) * 2007-10-10 2009-04-16 Cordelia Lighting, Inc. Lighting fixture with recessed baffle trim unit
US20100259919A1 (en) * 2009-02-11 2010-10-14 Koninklijke Philips Electronics, N.V. LED Downlight Retaining Ring
US20100296272A1 (en) * 2009-05-19 2010-11-25 Square D Company Recessed LED Downlight

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB942630A (en) * 1962-02-20 1963-11-27 Century Lighting Inc Downlight and device for varying the spectral quality thereof
CA2371682A1 (fr) * 2001-02-15 2002-08-15 3F Filippi S.P.A. Luminaire, particulierement du type plafonnier ou du type a raccord encastre dans les plafonds et les murs
WO2008128635A1 (fr) * 2007-04-23 2008-10-30 Zumtobel Lighting Gmbh Lampe à refroidissement
US20090097262A1 (en) * 2007-10-10 2009-04-16 Cordelia Lighting, Inc. Lighting fixture with recessed baffle trim unit
US20100259919A1 (en) * 2009-02-11 2010-10-14 Koninklijke Philips Electronics, N.V. LED Downlight Retaining Ring
US20100296272A1 (en) * 2009-05-19 2010-11-25 Square D Company Recessed LED Downlight

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2490956A (en) * 2011-05-20 2012-11-21 Astro Lighting Ltd Lighting unit with demountable lamp housing, fireproofing and removable waterproofing structure
GB2490956B (en) * 2011-05-20 2013-07-03 Astro Lighting Ltd A lighting unit
WO2019094758A1 (fr) 2017-11-09 2019-05-16 R&B Wagner, Inc. Ensemble module d'éclairage et méthode d'utilisation
EP3707430A4 (fr) * 2017-11-09 2021-03-03 R&B Wagner, Inc. Ensemble module d'éclairage et méthode d'utilisation
US11092294B2 (en) 2017-11-09 2021-08-17 R&B Wagner, Inc. Lighting module assembly and method of use
CN110375238A (zh) * 2019-07-20 2019-10-25 江苏恒百利照明科技有限公司 一种新型gx53筒灯

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