EP0751339A2 - Beleuchtungseinrichtung mit gegossenem Reflektor - Google Patents

Beleuchtungseinrichtung mit gegossenem Reflektor Download PDF

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Publication number
EP0751339A2
EP0751339A2 EP96110404A EP96110404A EP0751339A2 EP 0751339 A2 EP0751339 A2 EP 0751339A2 EP 96110404 A EP96110404 A EP 96110404A EP 96110404 A EP96110404 A EP 96110404A EP 0751339 A2 EP0751339 A2 EP 0751339A2
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EP
European Patent Office
Prior art keywords
lighting fixture
cast
reflector
lamp
lamp 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Withdrawn
Application number
EP96110404A
Other languages
English (en)
French (fr)
Other versions
EP0751339A3 (de
Inventor
David W. Cunningham
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.)
Individual
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
Application filed by Individual filed Critical Individual
Publication of EP0751339A2 publication Critical patent/EP0751339A2/de
Publication of EP0751339A3 publication Critical patent/EP0751339A3/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
    • 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
    • F21V19/0005—Fastening of light sources or lamp holders of sources having contact pins, wires or blades, e.g. pinch sealed lamp
    • 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
    • F21V29/71—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements
    • F21V29/713—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements in direct thermal and mechanical contact of each other to form a single system
    • 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
    • F21V29/74—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
    • F21V29/767—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 directions perpendicular to 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
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings
    • 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
    • F21V21/14—Adjustable mountings
    • F21V21/30—Pivoted housings or frames
    • 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

Definitions

  • This invention relates generally to lighting fixtures and, more particularly, to lighting fixtures specifically configured to project a beam of light used in theater, television and architectural lighting applications.
  • Lighting fixtures of this particular kind typically include a symmetrical, concave reflector and a lamp assembly having one or more light sources (e.g., filaments) located at or near a focal region of the reflector.
  • the lamp assembly usually is removable from the reflector, but sometimes is integrated with the reflector to form a single unit.
  • the reflector and lamp assembly typically are carried within a closed rear housing, which serves as the lighting fixture's main structural member.
  • a tubular front housing which carries a projection lens, is secured to the front end of the rear housing, adjacent to the concave reflector's mouth.
  • a gel frame retainer is carried at the front end of the front housing, for retaining a removable gel frame that colors the projected beam.
  • Some lighting fixtures of this kind are configured to image the projected beam of light at a distant location, e.g., a theater stage.
  • the concave reflector is generally ellipsoidal and the lamp assembly is positioned with its one or more filaments located generally at or near one of the reflector's two focal regions.
  • a gate assembly is carried by the front housing, at the location of the reflector's second focal region, and this gate assembly includes, for example, a removable pattern and/or a plurality of shutters for shaping the projected beam.
  • light emitted by the filaments is reflected to the gate assembly, and the projection lens then images the aperture of the gate assembly at the selected location.
  • non-imaging lighting fixtures of this kind have concave reflectors configured generally as paraboloids, and the lamp assembly is positioned with its one or more filaments located generally at or near the reflector's single focal region. In operation, light emitted by the filaments is reflected forwardly to produce a beam of selected beamwidth.
  • the position of the lamp assembly relative to the concave reflector is often made to be adjustable. This adjustability enables the assembly's one or more filaments to be selectively positioned at or near the reflector's focal region, such that the projected beam's energy distribution can be optimized.
  • the lighting fixture's rear housing which carries the concave reflector and lamp assembly, serves as the fixture's main structural element.
  • a U-shaped support bracket for attaching the fixture to an overhead support typically is secured to this rear housing.
  • Special means also are included within the rear housing for supporting the reflector.
  • the lighting fixtures described briefly above have functioned generally satisfactorily in projecting beams of light for use in theater, television, and architectural lighting applications.
  • the fixtures are believed to have included an excessive number of components and, therefore, to have been unduly complex and costly.
  • the reflectors of such fixtures are believed to have been unduly susceptible to overheating, which can be problematic when there is a desire to use certain temperature-sensitive coatings. It should, therefore, be appreciated that a need exists for a lighting fixture of this general kind that is less susceptible to overheating and that is less complex in construction, yet that provides at least comparable performance in projecting beams of light having a desired, optimal energy distribution.
  • the present invention fulfills this need.
  • the present invention is embodied in a lighting fixture for theater, television, and architectural applications, that is particularly effective in dissipating excess heat and that is substantially less complex in construction and less costly than prior fixtures of this kind, yet that provides at least comparable performance in projecting beams of light having a desired, optimal energy distribution.
  • the lighting fixture includes a cast substrate having a concave, substantially symmetrical surface defining an optical axis (e.g., a paraboloid or an ellipsoid), an opposite, convex surface that defines a plurality of cooling fins exposed to the lighting fixture's exterior, and a receptacle of predetermined shape and size, in alignment with the optical axis.
  • a reflective coating is located on the substrate's concave surface, and a lamp assembly is included, having a glass envelope and one or more light sources (e.g., filaments or arcs) located within the envelope, and further having a cast lamp base with a predetermined peripheral shape and size configured to fit conformably in the receptacle of the cast substrate.
  • the lamp assembly is configured with its one or more light sources located in predetermined, fixed locations relative to the cast lamp base, such that when the assembly is mounted to the cast substrate with its cast lamp base conformably received in the substrate's receptacle, the light sources are located in predetermined, fixed positions relative to the substrate.
  • the cast substrate preferably is formed of a highly heat conductive material such as aluminum.
  • FIG. 1 is a side elevational view of a lighting fixture embodying the invention, suitable for use in theater, television, and architectural lighting applications.
  • FIG. 2 is a side cross-sectional view of the lighting fixture of FIG. 1.
  • FIG. 3 is an exploded rear perspective view of the cast reflector, lamp assembly, and burner assembly of the lighting fixture of FIG. 1.
  • FIG. 4 is a rear elevational view of the lighting fixture of FIG. 1.
  • FIG. 5 is a front elevational view of the lighting fixture of FIG. 1.
  • the fixture includes a reflector 11 having a reflective surface 13 in the general shape of a paraboloid, which defines an optical axis 15 and which has a general focal region.
  • a receptacle 17 is defined on the rear side of the reflector, with a central aperture 19 aligned with the optical axis, for receiving a lamp assembly 21.
  • the lamp assembly includes a base 23, an elongated glass envelope 25 secured to the base, and a plurality of filaments 27 located within the envelope.
  • the lamp base is configured to fit conformably within the receptacle 17, with a longitudinal axis of the elongated glass envelope aligned with the reflector's optical axis 15 and with the filaments located at or near the focal region of the reflective surface 13.
  • a burner assembly 29 secures the lamp assembly in place and delivers electrical power to the lamp assembly.
  • a two-part, generally tubular front housing 31 is secured to the reflector's circular mouth, with its longitudinal axis aligned with the optical axis.
  • This front housing carries a lens 33 that spreads the projected beam and further carries at its forward end a set of brackets 35 that functions as a retainer for a colored gel frame (not shown) that colors the projected beam.
  • the front housing 31 includes left and right halves 31a and 31b, respectively, which are assembled together by bolts 37. This two-part construction allows the front housing to be conveniently assembled to the reflector 11, with an annular flange 39 at the reflector's mouth matingly received within an annular channel 41 at the front housing's rearward end. Decorative arms 43a and 43b project rearwardly from the respective left and right halves, toward the burner assembly 29.
  • a conventional U-shaped support bracket 45 is secured by bolts 47a and 47b to the front housing's respective left and right halves.
  • a bolt 49 with an enlarged, hand-graspable head 51 is used to tighten the support bracket in any desired orientation, so as to controllably direct the beam of light.
  • the reflector 11 and the front housing 31 both are cast of aluminum or other suitable thermally conductive material (e.g., zinc). This construction provides the components with sufficient strength to constitute the lighting fixture's main structural components. The need for a separate housing for the reflector thereby is eliminated.
  • the reflector's rear, convex side therefore, can be exposed to the ambient air, which significantly improves convective cooling of the fixture.
  • the reflector's rear side is configured to include a plurality of parallel cooling fins 53. Moreover, because the fins are an integral part of the reflector 11, the transfer of heat is further enhanced.
  • the base 23 of the lamp assembly 21 is cast of aluminum or other suitable material (e.g., ceramic), and it includes a plurality of parallel cooling fins 55. These fins project in opposite directions from a central, generally rectangular center body 57.
  • the upper surface of the base's center body has a generally rectangular recess 59 sized to receive the lower end of the lamp assembly's glass envelope 25.
  • the envelope is fixed in place using a suitable potting compound 61 (FIG. 2).
  • Power leads 63 extend from the glass envelope downwardly through apertures in the base, to project from the base's lower surface.
  • the base 23 of the lamp assembly 21 is configured to have a size and shape that conformably mates with the receptacle 17 of the cast reflector 11.
  • the fins 55 of the base define a generally cylindrical outer shape, with flats 65 defined on two opposed sides of the cylinder.
  • Two ribs 67 extend longitudinally along each flat.
  • the reflector's receptacle 17 is formed by cutouts in the five centermost cooling fins 53 on the reflector's rear side, which form a generally cylindrical recess.
  • a generally ring-shaped seat 69 encircles the receptacle's aperture 19, to receive the base's flat upper surface.
  • Slots 71 formed in two of the reflector's cooling fins are sized and positioned to receive the ribs 67 that extend along the two flats 65 of the base, thereby preventing rotation of the lamp assembly about the fixture's optical axis 15.
  • the reflector 11 and the base 23 of the lamp assembly 21 both are cast, their shapes and sizes are substantially invariant and the position of the lamp base relative to the reflector, therefore, can be known with reasonable accuracy. This feature is important in enabling the fixture to project a beam of light having the desired spread angle and the desired intensity distribution without requiring the positioning of the lamp assembly relative to the reflector to be controllably adjustable.
  • Critical in the projection of a beam of light having the desired spread angle and the desired intensity distribution is the positioning of the lamp filaments 27 relative to the reflector's parabolic, reflective surface 13 and, in particular, relative to the general focal region of that surface. It is, therefore, important that the filaments be precisely positioned relative to the lamp base 23. This is accomplished during manufacture of the lamp assembly 21 by first securing the filaments within the glass envelope 25, at an imprecise, but fixed position, and by then controllably positioning the lower end of the glass envelope within the base recess 59 such that the filaments are precisely positioned relative to the base. The glass envelope then is fixed in that precise position using the potting compound 61. In this manner, placement of the lamp assembly in the receptacle 17 of the reflector 11 will automatically position the filaments 27 at the desired position relative to the reflector's parabolic, reflective surface 13.
  • the burner assembly 29 is secured to the rear side of the reflector by a single screw 73 that is configured to engage a threaded bore 74 machined in the reflector, adjacent to the receptacle.
  • the screw has an enlarged, knurled head 75, to facilitate its convenient tightening by hand.
  • the burner assembly includes an electrical connector 77 engageable with the two leads 63 that project downwardly from the lamp assembly. Electrical power is delivered to the connector, and thereby to the lamp assembly, by a power cord 79.
  • the parabolic, reflective surface 13 of the cast reflector 11 can be used to form the parabolic, reflective surface 13 of the cast reflector 11.
  • the surface is first polished and then coated with an aluminum coating using a vapor-deposition process.
  • An overcoat of silicon oxide or suitable polymer then is applied over the aluminum coating, to protect the coating from abrasion, etc.
  • the polishing step is substituted by a step of coating the parabolic surface with a specular undercoat.
  • Suitable materials for this specular undercoat include a high-temperature polymer such as a catalyzed silicone thermoset resin.
  • the reflective aluminum coating is made to be sufficiently uniform to provide a well defined beam of light.
  • the vapor-deposited aluminum coating can comprise high-purity aluminum, which generally has a reflectivity of about 89%.
  • the vapor-deposited aluminum coating can comprise an enhanced coating that includes an aluminum layer overlayed by an alternating stack of silicon oxide and metal (e.g., titanium or tantalum) oxide layers. These alternating layers each have a thickness that approximates one-quarter wavelength at a particular nominal wavelength of interest. This enhanced coating can provide a reflectivity on the order of 95%.
  • a specular undercoat of the kind described above care must be taken to ensure that its temperature does not exceed a threshold that typically is in the range of about 200 to 300 degrees Centigrade. If this temperature threshold is exceeded, the undercoat can degrade. Avoiding an excessive temperature also is an important consideration when a protective polymer overcoat is used.
  • the parabolic surface of the cast reflector 11 is coated with a coating system that is dichroic, reflecting substantially all of the incident visible light, but absorbing substantially all of the incident infrared light.
  • a coating system that is dichroic, reflecting substantially all of the incident visible light, but absorbing substantially all of the incident infrared light.
  • This coating system includes an undercoat formed of a material that is highly absorptive of infrared light, such as a vapor-deposited metallic coating, and an overlaying coating formed of a large number of duing layers of silicon oxide and metal (e.g., titanium or tantalum) oxide, which transmits infrared light, but reflects visible light.
  • silicon oxide and metal e.g., titanium or tantalum
  • the absorptive undercoat can sometimes be subject to degradation over time at high temperatures. It is therefore desirable to maintain the temperature of this material as low as possible, and preferably below about 300 degrees Centigrade.
  • the lens 33 functions principally to spread the projected beam of light and thereby provide the desired beamwidth.
  • the PAR 56 diffusion lenses include an array of rectangular lenslets 81 (FIG. 5), each of which functions to spread incident light by a predetermined amount.
  • Some PAR 56 lenses provide a diffusion pattern that generally is circumferentially asymmetric, so the lens is made to be controllably rotatable within the front housing 31.
  • the lens is carried within a plastic, ring-shaped lens holder 83, which is confined within an annular channel 85 (FIG. 2) defined in the front housing's inner wall.
  • a plurality of ribs 87 located on the outer cylindrical surface of the lens holder are exposed through apertures 89 (FIG. 1) in the front housing, to allow a convenient manual rotation of the lens holder and lens.
  • a plurality of parallel baffles 91 project inwardly from the inner wall of the front housing 31, rearwardly of the annular channel 85 that receives the lens holder 83 and lens 33. These baffles reduce the intensity of light emitted in directions outside the desired beamwidth.
  • the filaments 27 of the lamp assembly 21 preferably are in the form of a plurality of wire coils arranged in symmetrical pattern around the assembly's longitudinal axis.
  • the reflective surface 13 of the reflector 11 preferably includes a plurality of radial facets 93, which serve to eliminate undesired filament images in the projected beam.
  • the preferred lamp assembly and reflective surface are described more fully in U.S. Patent No. 5,268,613, which is incorporated by reference.
  • the present invention provides an improved lighting fixture for theater, television, and architectural applications that is less susceptible to overheating and that is less costly and less complex in construction, yet that provides at least comparable performance in projecting beams of light having a desired, optimal energy distribution.
  • This performance is achieved by constructing the fixture's reflector as a cast, structural component whose rear side defines a plurality of cooling fins exposed directly to the fixture's exterior and by constructing the fixture's lamp assembly to have a cast base that is conformably received in a receptacle formed in the cast reflector.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
EP96110404A 1995-06-30 1996-06-27 Beleuchtungseinrichtung mit gegossenem Reflektor Withdrawn EP0751339A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US49789995A 1995-06-30 1995-06-30
US497899 1995-06-30

Publications (2)

Publication Number Publication Date
EP0751339A2 true EP0751339A2 (de) 1997-01-02
EP0751339A3 EP0751339A3 (de) 1998-05-06

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EP96110404A Withdrawn EP0751339A3 (de) 1995-06-30 1996-06-27 Beleuchtungseinrichtung mit gegossenem Reflektor

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0866265A2 (de) * 1997-03-22 1998-09-23 Imi Marston Limited Wärmesenke
DE19840475A1 (de) * 1998-09-04 2000-03-30 Armin Hopp Beleuchtungsapparatur
DE10316506A1 (de) * 2003-04-09 2004-11-18 Schott Glas Lichterzeugende Vorrichtung mit Reflektor
WO2006136387A1 (de) 2005-06-22 2006-12-28 Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg Kühlsystem für einen scheinwerfer
EP1710497A3 (de) * 2005-04-08 2007-04-18 iGUZZINI ILLUMINAZIONE S.p.A. Säulenbeleuchtungsvorrichtung mit Wärmeabfuhrvorrichtung
WO2007050547A2 (en) * 2005-10-26 2007-05-03 Acuity Brands, Inc. Lamp thermal management system
CN101749611B (zh) * 2010-01-30 2011-05-25 中山市正丰照明科技有限公司 一种可开合投射灯
WO2012044364A1 (en) * 2010-09-30 2012-04-05 GE Lighting Solutions, LLC Lightweight heat sinks and led lamps employing same
WO2013043441A3 (en) * 2011-09-20 2013-05-16 Cree, Inc. Specular reflector and led lamps using same
US9841175B2 (en) 2012-05-04 2017-12-12 GE Lighting Solutions, LLC Optics system for solid state lighting apparatus
US9951938B2 (en) 2009-10-02 2018-04-24 GE Lighting Solutions, LLC LED lamp
US10340424B2 (en) 2002-08-30 2019-07-02 GE Lighting Solutions, LLC Light emitting diode component

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US5268613A (en) 1991-07-02 1993-12-07 Gregory Esakoff Incandescent illumination system

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DE3916443A1 (de) * 1989-01-31 1990-08-02 Vollmann Gmbh & Co Kg Otto Elektrische steckfassung fuer halogenlampen
JPH03168793A (ja) * 1989-11-29 1991-07-22 Pioneer Electron Corp 光源用反射部材
EP0435318A1 (de) * 1989-12-29 1991-07-03 Toshiba Lighting & Technology Corporation Leuchte mit Reflektor aus Kunstharz

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US5268613A (en) 1991-07-02 1993-12-07 Gregory Esakoff Incandescent illumination system

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0866265A3 (de) * 1997-03-22 2000-08-16 Imi Marston Limited Wärmesenke
US6196298B1 (en) 1997-03-22 2001-03-06 Imi Marston Limited Heat sink
EP0866265A2 (de) * 1997-03-22 1998-09-23 Imi Marston Limited Wärmesenke
DE19840475A1 (de) * 1998-09-04 2000-03-30 Armin Hopp Beleuchtungsapparatur
US10340424B2 (en) 2002-08-30 2019-07-02 GE Lighting Solutions, LLC Light emitting diode component
DE10316506A1 (de) * 2003-04-09 2004-11-18 Schott Glas Lichterzeugende Vorrichtung mit Reflektor
CN1844733B (zh) * 2005-04-08 2010-10-06 伊古齐尼照明有限公司 具有散热设备的柱状照明装置
EP1710497A3 (de) * 2005-04-08 2007-04-18 iGUZZINI ILLUMINAZIONE S.p.A. Säulenbeleuchtungsvorrichtung mit Wärmeabfuhrvorrichtung
US9121589B2 (en) 2005-06-22 2015-09-01 Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg Projector
WO2006136387A1 (de) 2005-06-22 2006-12-28 Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg Kühlsystem für einen scheinwerfer
WO2007050547A2 (en) * 2005-10-26 2007-05-03 Acuity Brands, Inc. Lamp thermal management system
WO2007050547A3 (en) * 2005-10-26 2009-05-14 Acuity Brands Inc Lamp thermal management system
US7771095B2 (en) 2005-10-26 2010-08-10 Abl Ip Holding, Llc Lamp thermal management system
US9951938B2 (en) 2009-10-02 2018-04-24 GE Lighting Solutions, LLC LED lamp
CN101749611B (zh) * 2010-01-30 2011-05-25 中山市正丰照明科技有限公司 一种可开合投射灯
WO2012044364A1 (en) * 2010-09-30 2012-04-05 GE Lighting Solutions, LLC Lightweight heat sinks and led lamps employing same
US8672516B2 (en) 2010-09-30 2014-03-18 GE Lighting Solutions, LLC Lightweight heat sinks and LED lamps employing same
CN103238027B (zh) * 2010-09-30 2017-03-29 Ge照明解决方案有限责任公司 重量轻的散热器和使用该散热器的led灯
CN103238027A (zh) * 2010-09-30 2013-08-07 Ge照明解决方案有限责任公司 重量轻的散热器和使用该散热器的led灯
CN103930715A (zh) * 2011-09-20 2014-07-16 克利公司 镜面反射器和使用镜面反射器的led灯
US8840278B2 (en) 2011-09-20 2014-09-23 Cree, Inc. Specular reflector and LED lamps using same
WO2013043441A3 (en) * 2011-09-20 2013-05-16 Cree, Inc. Specular reflector and led lamps using same
US9841175B2 (en) 2012-05-04 2017-12-12 GE Lighting Solutions, LLC Optics system for solid state lighting apparatus
US10139095B2 (en) 2012-05-04 2018-11-27 GE Lighting Solutions, LLC Reflector and lamp comprised thereof

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