CA2554863A1 - Directly viewable luminaire - Google Patents

Directly viewable luminaire Download PDF

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Publication number
CA2554863A1
CA2554863A1 CA002554863A CA2554863A CA2554863A1 CA 2554863 A1 CA2554863 A1 CA 2554863A1 CA 002554863 A CA002554863 A CA 002554863A CA 2554863 A CA2554863 A CA 2554863A CA 2554863 A1 CA2554863 A1 CA 2554863A1
Authority
CA
Canada
Prior art keywords
luminaire
set forth
light
emitting elements
diffuser
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.)
Granted
Application number
CA002554863A
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French (fr)
Other versions
CA2554863C (en
Inventor
Peter Kan
Adrian Weston
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Signify Holding BV
Original Assignee
Individual
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
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Application filed by Individual filed Critical Individual
Priority to CA2554863A priority Critical patent/CA2554863C/en
Publication of CA2554863A1 publication Critical patent/CA2554863A1/en
Application granted granted Critical
Publication of CA2554863C publication Critical patent/CA2554863C/en
Active legal-status Critical Current
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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
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • 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
    • 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
    • F21V29/15—Thermal insulation
    • 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
    • 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
    • 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
    • F21V29/763—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 the planes containing the fins or blades having the direction of the light emitting axis
    • 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
    • F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
    • 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
    • F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
    • F21V29/87—Organic material, e.g. filled polymer composites; Thermo-conductive additives or coatings therefor
    • 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
    • F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
    • F21V29/89—Metals
    • 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
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/507—Cooling arrangements characterised by the adaptation for cooling of specific components of means for protecting lighting devices from damage, e.g. housings
    • 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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/40—Lighting for industrial, commercial, recreational or military use
    • F21W2131/406—Lighting for industrial, commercial, recreational or military use for theatres, stages or film studios
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • 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
    • F21Y2105/00—Planar light sources
    • 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
    • F21Y2113/10—Combination of light sources of different colours
    • F21Y2113/13—Combination of light sources of different colours comprising an assembly of point-like light sources
    • 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]
    • 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]
    • F21Y2115/15—Organic light-emitting diodes [OLED]

Abstract

The present invention provides a luminaire comprising an housing having thermally separate compartments for an electronics portion and a lighting portion. These thermally separate compartments can provide a means for providing thermal isolation between the respective components, namely the electronics portion and the lighting portion. In this manner thermal interaction between these portions can be reduced, thereby improving performance of the luminaire. The lighting portion comprises a plurality of light-emitting elements and further includes optics for the manipulation of illumination created by the light-emitting elements. A power supply for supply of energy to the light-emitting elements and a controller for controlling application of energy from a power source to the light-emitting elements is provided in the electronics portion and can be thermally separated within the electronics portion. Moreover, an optical device comprising two linear diffuser elements can be used to further improve the light emission characteristics of the light-emitting elements thereby providing a directly viewable luminaire wherein the illumination produced by point light sources appears uniform along the length of the luminaire.

Claims (30)

WE CLAIM:
1. A luminaire comprising a housing defining a first internal compartment containing one or more light-emitting elements mounted on a base connected to the housing, the housing further defining a second internal compartment containing electronic driver means coupled to the one or more light-emitting element for providing controlled electrical energy to the one or more light-emitting elements, said first compartment is thermally separated from the second compartment.
2. The luminaire as set forth in claim 1, wherein the driver means comprises a controller and a power supply and wherein the second internal compartment is subdivided into thermally separate sub-compartments enabling thermal separation of controller and the power supply.
3. The luminaire as set forth in claim 1, wherein the base is in thermal contact with the one or more light-emitting elements.
4. The luminaire as set forth in claim 3, wherein the base is made of a thermally conductive material selected from the group comprising aluminum, copper, silver and a thermally conductive polymer to dissipate the heat from the one or more light-emitting elements.
5. The luminaire as set forth in claim 1, wherein the base includes a finned or undulating surface for coolth collection.
6. The luminaire as set forth in claim 1, wherein the base is H-shaped and includes at distal ends a plurality of upper and lower elements, the element forming the first and second internal compartments respectively.
7. The luminaire as set forth in claim 6, wherein the first internal compartment is covered by a transmissive cover plate.
8. The luminaire as set forth in claim 7, wherein the transmissive cover plate is hermetically sealed to the first internal compartment.
9. The luminaire as set forth in claim 1, wherein the driver means comprises a power supply unit coupled to a controller.
10. The luminaire as set forth in claim 9, wherein the controller is a microcontroller.
11. The luminaire as set forth in claim 1, wherein the housing further includes a base cover enclosing the second internal compartment.
12. The luminaire as set forth in claim 11, wherein the base cover is made of a thermally conductive material selected from the group comprising aluminum, copper, silver and a thermally conductive polymer to dissipate the heat from the electronic driver means.
13. The luminaire as set forth in claim 12, wherein the base cover includes a finned or undulating surface.
14. The luminaire as set forth in claim 12, wherein the driver means are thermally coupled to the base cover.
15. The luminaire as set forth in claim 1, wherein the driver means includes at least one enclosure of low thermal conductivity.
16. The luminaire as set forth in claim 1, wherein the driver means is thermally connected to a heat sink.
17. The luminaire as set forth in claim 1, wherein the base includes a plurality of vents.
18. The luminaire as set forth in claim 1, wherein the base further includes first and second barriers at distal ends thereof.
19. The luminaire as set forth in claim 1, wherein the one or more light-emitting elements are selected from the group comprising red, green, blue, amber and white light-emitting diodes.
20. The luminaire as set forth in claim 19, wherein the one or more light-emitting elements are configured and arranged in a linear array layout.
21. The luminaire as set forth in claim 19, wherein the one or more light emitting elements are configured and arranged in a matrix layout.
22. A luminaire comprising:
(a) a housing defining a first internal compartment containing one or more light-emitting elements mounted on a planar support connected to the housing, the housing further defining a second internal compartment containing electronic driver means coupled to the one or more light-emitting elements for providing controlled electrical energy to the one or more light-emitting elements, the first and second internal compartments being thermally isolated from one another; and (b) an optical means coupled to the housing for manipulating light emitted by the one or more light-emitting elements, said optical means comprising first and second diffuser elements positioned coaxially in a spaced apart configuration.
23. The luminaire as set forth in claim 22, wherein the first and second diffuser elements are linear hemispherical optical diffusers.
24. The luminaire as set forth in claim 23, wherein one or more reflectors having a generally parabolic spectrally selective reflective surface is disposed in a plane perpendicular to collinear axes of the first and second diffuser elements, one of the one or more reflectors being positioned around each of the one or more light-emitting elements for collecting and reflecting light produced by the one or more light-emitting elements toward the first and second diffuser elements.
25. An optical device for use with a luminaire including two or more Light-emitting elements, the optical device comprising:
(a) a first diffuser element configured to be positioned proximate to the two or more light-emitting elements, said first diffuser for diffusing emitted flux from the light-emitting elements; and (b) a second diffuser element having a length and positioned in coaxial spaced apart alignment with the first diffuser, said second diffuser for providing secondary diffusion of the emitted flux;
thereby enabling creation of a substantially constant luminance along the length of the second diffuser.
2b. The optical device as set forth in claim 25, wherein the first and second diffusers are hemispherical diffusers.
27. The optical device as set forth in claim 25, wherein the first diffuser comprises a plurality of spherical elements.
28. The optical device as set forth in claim 25 wherein the second diffuser has a mushroom cap cross sectional shape.
29. The optical device as set forth in claim 25, wherein the first and second diffusers are selected from the group comprising a linear holographic diffuser, an elliptical holographic diffuser, a Hosted glass and a circular holographic diffuser.
30. The optical element as set forth in claim 25 wherein the first and second diffusers are integrally formed as an extruded element.
CA2554863A 2004-01-28 2005-01-28 Directly viewable luminaire Active CA2554863C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2554863A CA2554863C (en) 2004-01-28 2005-01-28 Directly viewable luminaire

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CA2456385 2004-01-28
CA2,456,385 2004-01-28
CA2462767 2004-03-30
CA2,462,767 2004-03-30
CA2554863A CA2554863C (en) 2004-01-28 2005-01-28 Directly viewable luminaire
PCT/CA2005/000110 WO2005073629A1 (en) 2004-01-28 2005-01-28 Directly viewable luminaire

Publications (2)

Publication Number Publication Date
CA2554863A1 true CA2554863A1 (en) 2005-08-11
CA2554863C CA2554863C (en) 2012-07-10

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ID=34827927

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2554863A Active CA2554863C (en) 2004-01-28 2005-01-28 Directly viewable luminaire

Country Status (4)

Country Link
US (2) US7267461B2 (en)
EP (1) EP1711739A4 (en)
CA (1) CA2554863C (en)
WO (1) WO2005073629A1 (en)

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US7267461B2 (en) 2007-09-11
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