Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
  • H01R33/05—Two-pole devices
  • H01R33/06—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other
  • H01R33/08—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other for supporting tubular fluorescent lamp
  • H01R33/0809—Two-pole devices with two current-carrying pins, blades or analogous contacts, having their axes parallel to each other for supporting tubular fluorescent lamp having contacts on one side only
• • 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
• • 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
  • F21V19/0075—Fastening of light sources or lamp holders of tubular light sources, e.g. ring-shaped fluorescent light sources
  • F21V19/008—Fastening of light sources or lamp holders of tubular light sources, e.g. ring-shaped fluorescent light sources of straight tubular light sources, e.g. straight fluorescent tubes, soffit lamps
  • F21V19/0085—Fastening of light sources or lamp holders of tubular light sources, e.g. ring-shaped fluorescent light sources of straight tubular light sources, e.g. straight fluorescent tubes, soffit lamps at least one conductive element acting as a support means, e.g. resilient contact blades, piston-like contact
• • 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
  • F21V19/04—Fastening of light sources or lamp holders with provision for changing light source, e.g. turret
• • 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
  • F21V25/00—Safety devices structurally associated with lighting devices
• • 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
  • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
  • F21V14/02—Controlling the distribution of the light emitted by adjustment of elements by movement of light sources
• • 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
  • F21W2131/10—Outdoor lighting
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R2201/00—Connectors or connections adapted for particular applications
  • H01R2201/08—Connectors or connections adapted for particular applications for halogen lamps

Definitions

• the present invention relates to high intensity lighting fixtures, and in particular, to unjacketed, double-ended high intensity discharge (HID) lamps and fixtures for wide area lighting of relatively distant targets, such as in sports lighting.
• HID high intensity discharge
• High intensity discharge lamps such as used in sports lighting, require high operating electrical power to operate lamps that usually are on the order of 1000 watts or greater.
• HID lamps such as metal halide or mercury HID lamps generate ultraviolet (UN) radiation. Both of these characteristics of such HID lamps create safety issues, particularly for persons that install, maintain or repair such fixtures.
• HID fixtures address these issues by utilizing screw-in lamps so that there are no directly exposed current-carrying parts. These lamps also usually have glass envelopes surrounding the arc tube. The glass absorbs a sufficient amount of UN radiation so that it does not pose a serious risk to workers, even if in close proximity to the lamps when operating.
• a particular type of HID lamp does not have any glass envelope surrounding the arc tube. It also has opposite ends usually with short leads with exposed ends that are connected to exposed electrical connection posts in the fixture. Although such fixtures usually have glass lens over the front of the reflector for the fixture, which blocks UN radiation, when the lens is opened, that UN protection is removed. Also, the exposed current carrying surfaces pose risk.
• Underwriters Laboratories have standards for such fixtures (also sometimes called luminaires), which directly address the safety concerns with high-powered electricity and UN radiation relative to double-ended unjacketed HID lamps. See, for example, UL standards 1598. Sections 3.4, 6.4, and 6.5 require each fixture to have safety interlock switches which automatically disconnect electrical power to the fixture when the lens assembly is removed. The automatic disconnection of power is not only intended to prevent any risk of electrical shock, even if normally current carrying exposed surfaces are touched, but also, is intended to prevent any risk of UN exposure.
• the present invention includes a lighting fixture which improves upon the state of the art in at least the following ways. It shields the lamp lead connections to electrical power from direct exposure to a worker by utilizing connections that even when separated, do not allow direct contact by even the fingers of a worker.
• Figures 1A-D, and IF are assembled perspective views of an embodiment according to the present invention.
• Figure IE is an exploded view of those other Figures.
• hidden lines are not used, but structure which would otherwise be hidden is indicated by solid lines.
• Figures 2A-B are various plan and sectional views of component 12 (the cone or bulb cone or mounting mogul) of Figures 1A-F.
• Figures 3A-C are plan views and details of reflector 18 of Figures 1A-F and a reinforcing ring 130 (see also Figure 6A) that can be used with reflector 18.
• Figures 4A-I are isometric views of a box assembly 16 of Figures 1A-F for an ignitor circuit.
• Figures 5A-J are isometric views and details of an HID arc tube assembly 14 of Figures 1A-F.
• Figures 6A1, 6A2, 6B-M are isometric views and details of lamp holder assembly 22 of Figures 1A-F.
• Figures 7A-W are isometric and details of parabolic reflector assembly
• Figures 8A-D are isometric and details of connector assembly 28 of Figures 1A-F.
• Figures 9A and B are exploded views of parts from Figures 1A-F.
• Figure 9C is plan views of a firewall 120.
• HID fixtures are elevated from poles or structures (e.g. >35 feet tall). Examples also include indoor lighting where banks or arrays are suspended from rafters or beams or other structures. Sports lighting of this type generally utilizes HID lamps of at or above 1000 watts rating. Reflectors are used to generate relatively narrow beams (especially in the vertical plane) that can be controlled and concentrated substantial distances (many times over a hundred feet) to a target area such as a playing field.
• unjacketed double-ended HID lamps of 2000 watt rating are used.
• FIGS 1A-F illustrate an exemplary embodiment of a fixture 10, according to the present invention.
• the major sections or parts of fixture 10 include a cone 12 enclosing a connector assembly 28 and providing a connection to an adjustable mounting elbow 14 on one end and a reflector /lens assembly 18/20 on the other.
• a box assembly 16 is mounted to cone 12 and houses an igniter.
• a lamp holder assembly 22 is connected to the base of reflector 18 and provides for snap-in and out of lamp assembly 24.
• a parabloid assembly 26 is also removably mounted to the lamp holder assembly 22, and serves to reflect light energy from lamp 24, but is removably to allow access to cone 12 for installation and maintenance.
• Figure IA shows fixture 10 substantially assembled, but in a type of see- through illustration that shows how the interior parts are positioned.
• Figures IB- ID are similar to Figure IA, but in line drawing form.
• Figure IC illustrates in more detail how leads 102L (left) and 102R (right) are generally positioned in assembled form between lamp or arc tube 100 and connection assembly 28, which is in operative communication with an electrical power source (not shown).
• Figure IE illustrates the major parts of fixture 10 in exploded fashion.
• connection assembly 28 is mounted inside cone 14, and reflector 18 to cone 14 by means known within the art using the reinforcing ring shown at Figure 3C.
• Lamp holder 22 is also mounted to the reinforcing ring.
• Parabloid reflector assembly 26 has mounting structure that allows it to be removably locked into a holding position in lamp holder assembly 22.
• lamp assembly 24 is removably mountable into lamp holder assembly 22.
• Finger safe connections 102L/R and 304L/R can disconnect electrical power to lamp 100. This can be done easily, without risk that even the workers fingers can contact live electrical surfaces.
• Finger safe connections are available commercially. Those shown in the Figures are specially made to allow a worker to grip and manipulate them, and so that they can handle and have longevity in the environment of fixture 10 and the electrical power and heat experienced by it. An example of such finger safe connections can be found at co-pending U.S. Serial Number 09/076,278, commonly-owned by the owner of this application, and incorporated by reference herein.
• Cone 12 is shown and dimensioned at Figures 2A-B. It functions conventionally, except that ignitor box 16 is attachable as discussed below.
• elbow 14 is substantially shown in detail at Figures 2A-B. It too functions conventionally.
• Box assembly 16 is shown in detail at Figs. 4A-I. Note particularly that it encloses and houses an igniter for fixture 10. But also, note that it does not have to include ballast for fixture 10. In this embodiment, ballast for fixture 10 is located remotely (e.g. down at the bottom of the pole elevating fixture 10). This allows for much easier access to the ballasts and removes the ballast from the fixture, and its weight and bulk. Box 16 is connected to cone 12 by screws, bolts, or other means (see through-channels in corners of box 16). An ignitor circuit (not shown), such as are known in the art therefore can be placed relatively closely to the arc lamp 100, but away from the heat generated interiorly of reflector 18.
• the ignitor is pulsing a very high voltage level (e.g. 5000 volts), but at relatively low amperage. Therefore, electrical power of this nature tends to dissipate over distance more quickly than if at higher amperage.
• Placing housing 16 close to lamp 100 reduces or eliminates this problem. It also allows the ballast(s) for lamp 100 to be placed at a different location. For example, the ballast(s) can be placed in an enclosure nearer the base of the pole. They are easier to reach and repair and this would reduce weight and wind load at the lighting fixture.
• An appropriate opening can be made in cone 12 to allow wiring or cables from an ignitor circuit in housing 16 to pass into cone 12.
• Reflector 18 and its reinforcing ring are shown at Figures 3A-C and function conventionally.
• the reflecting properties of reflector 18 can be selected according to need.
• the HID arc lamp or tube 100 is illustrated in detail. It is a 2000 watt lamp, double-ended and unjacketed. Note that electrical leads 102L and R are completely covered along their lengths by an electrically insulating sleeving 103 (see Figure 5E), are electrically insulated at the ends of lamp 100 by ceramic or other insulating members and have finger-safe male connectors at opposite ends. Therefore, there are no electrically conducting surfaces that a worker can directly contact with his/her fingers. Further note spring clamps 106L and R at opposite lamp ends which cooperate with lamp holder assembly 22 to essentially allow lamp assembly 24 to be snapped in and out, quickly and easily and without tools (see particularly Figure 5J).
• finger safe connections 104 are shown at Figures 5F-H.
• the nature of these "finger-safe" connections is that they do not expose electrically conducting surfaces that can contacted directly by human fingers. Thus, even if the connections are electrically live, they will not shock a human even if the human handles them with his/her hands. Further description of finger-safe connections is set forth in U.S. Serial Number 09/076,278, owned by the owner of the present application, and incorporated by reference herein.
• connector assembly 28 mounts (by screws, bolts, or other means) into the interior of cone 12.
• two male finger- safe connections 304L and R can be integrally formed in a block that can be screwed, bolted or otherwise fixed to a plate or base of assembly 28.
• Each male connection 304 is raised from the plate or base, is rectangular or square in cross-section, and has raised tabs basically centered on three or all of its sides, and have distal ends that point generally in parallel towards the opening in cone 12 to reflector 18. Electrical leads from an electrical power source enter the opposite ends of connections 304, are fixed therein, and have exposed conducting surfaces internally of connections 304.
• FIGS 5A-J illustrate in detail complementary mating finger-safe female connections 104L and R having proximal ends connected to electrical leads 102L and R to opposite ends of arc tube 100.
• Connection 104 are identical and each has a distal end that matingly slides over a corresponding distal end of a connection 304. Note that the distal ends of connections 104L and R have medial axial slots on two opposite sides that extend from distal- most open ends a distance inwardly and then stop, and have holes on the other two opposite sides.
• Connections 104 have internally exposed, but finger-safe conduction surfaces that are configured to frictionally engage or contact exposed conducting surfaces internal of 304 to create an electrical connection through each mated set 104R/304L and 104R/304L.
• guides or tunnels 306L and R are aligned with the longitudinal axes of 304L and R respectively, are fixed to the plate or base of assembly 28, and are configured to allow passage of a connection 104, but closely conforms to the exterior shape of connection 104.
• guides 306 force the distal ends of 104 to be aligned with the distal ends of 304 when they come into close proximity, to ensure 104 is correctly oriented for mating with 304. None of the surfaces or pieces have electrically conducting surfaces accessible to human fingers.
• connections 104 are quite elongated. This allows the proximal ends of 104 (those nearest to the opening between cone 12 and reflector 18, to be close to that opening for easier access and gripping by a worker, but also allows the actual electrical junction between connectors 104 and 304 to be farther away from that opening; and thus farther away from heat generated inside reflector 18 during operation of lamp 100, some of which is conducted to the exterior of reflector 18 and cone 12. This is beneficial to deter or reduce any effect of such significant heat on these connections.
• Figures 5H and I illustrate in detail structure associated with lamp 100.
• lamp 100 can include a coating 110 all around lamp 100 that blocks and/or absorbs UN radiation generated in lamp 100.
• coatings are available from commercial entities, as indicated in Figure 5H. Coatings to block UN radiation are also disclosed in commonly owned U.S. Serial Number 09/076,277, incorporated by reference herein. Such coatings do not allow any more UN radiation from lamp 100 than glass lenses do in conventional fixtures. They are also formulated to adhere to lamp 100 and remain for a useful life even in the high temperatures created by HID lamps.
• lamp 100 could also have another coating 112 on or near a portion of its body.
• coating 112 is a reflective coating that, when lamp 100 is installed, is positioned on the outer facing side of lamp 100.
• Reflective coating 112 therefore can assist in diminishing glare that otherwise might be caused by light emanating directly out of fixture 10 without being controlled by any reflector.
• An automatic location structure can be built in so that reflective coating 112 always ends up in the proper position.
• Figures 5A and J show the spring clips 106L and R shown in detail in Figures 5A and J, for example. They are clamped to opposite ends of lamp 100 (other means or methods may be used to hold them in position once installed).
• Figure 5B and C show the clips in relation to arc tube 100, and in particular to the optional reflector 112.
• Figure 6a shows in more detail receivers 134L and R at the distal ends of outwardly extending arms 132L and R connected to ring 130, all of which forms lamp holder assembly 22.
• Receivers 134 are u-shaped and have holes on opposite sides of the u-shape aligned along an transverse axis.
• Clips 106 have shoulders on opposite sides configured to snap into place in holes in receivers 134 when lamp 100 is brought into place in holder assembly 22. Clips 106 fixed in a predetermined way to lamp 100 such that when the shoulders enter the holes in receivers 134, the correct rotational position of lamp 100 is automatically assured. Thus, the worker that is installing or relamping the lighting fixture can do so without tools, and having rotational position of lamp 100, and for example reflector 112, automatic.
• FIGS 6A-M detail lamp holder assembly 22. Note particularly how lamp brackets 132 extend outwardly angularly from ring 130 to lamp holders 134, which have rectangular openings to receive the spring clamp and releasably seat lamp 100 in place. Wire clips 136 allow leads 102 to be removably secured along brackets 132.
• FIGs 7A-W detail an embodiment of parabloid reflector 200.
• Vertical and horizontal brackets 202 and 204 cooperate with clamps 206 to grasp reflector 200.
• This structure insulates this glass reflector from metal to reduce the potential for breakage.
• Ceramic blankets can be placed on the back of reflector 200 to help insulate the interior of cone 12 from heat.
• a firewall 210 can be mounted as shown. Assembly 26 along with spring clips 208 (see Figures 7M-O, allow reflector 200 to be quickly and easily installed and removed, without tools.
• Lamp leads 102L and R are connectable and disconnectable to electrical power by releasable connection to the finger safe receivers 304L and R mounted on bracket 300 which in turn is mountable in the interior of cone 12 (see Figures 8A-D). Wires 302L and R are directed for connection to an electrical power source. Note guide 306 that assists a worker to line up and insert lead connections 102L and R into fixed connections 304L and R on bracket 300. Miscellaneous
• FIGS 9A and C illustrate in exploded or isolated fashion certain of the parts discussed above.
• Fixture or luminaire assembly 10 is assembled by installing connection assembly 28 into cone 12, and wiring electrical power leads to connections 304.
• Ignitor box 16 and its ignitor circuit are attached and connected electrically.
• Lamp holder assembly 22 is mounted around the opening in the apex of reflector 18. Lamp 100 is snapped into assembly 22. Finger-safe connections 104 are manipulated into guides 306 and snapped over finger-safe connections 304. Parabolic reflector 26 is placed into position closing off the opening between reflector 18 and cone 12. Lens 20 is fixed in place by lens clips.
• the assembly is finger-safe, even with power on, there is no UV threat because of the UV attenuation coating of lamp 100, the ignitor is in close proximity. Hooking up connections 104 and 304, installing parabolic reflector 28, mounting lamp 100 all are possible without tools and solely with a worker's hands.
• connections 104 and 304 are just the reverse.
• the lens is opened.
• a cable (Figure TV) could be fixed between the lens and the reflector to prevent it from falling to the ground.
• Parabolic reflector 26 can be manually removed (a cable could also be connected between it and the fixture). The worker need only pull axially outward gently but with enough force to overcome the capture of the raised tabs of 304 in the openings of 104, to separate connections 104 and 304 and cut off electrical power to lamp 100. This is efficient and economical and reliable. One can relamp quickly and easily.
• reflector 112 sends light that otherwise would leave lamp 100 back into lamp 100. It is believed that this might increase lamp life or lumen maintenance. It is believed that this promotes isothermal conditions in the arc tube 100.
• the reflective coating 112 is not required. It can be used when desired. It could also be a separate piece held near lamp 100.

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
• Non-Portable Lighting Devices Or Systems Thereof (AREA)
• Fastening Of Light Sources Or Lamp Holders (AREA)

Applications Claiming Priority (3)

Publications (1)

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• 2002
  • 2002-02-07 AU AU2002251908A patent/AU2002251908C1/en not_active Ceased
  • 2002-02-07 BR BR0207089-8A patent/BR0207089A/pt not_active IP Right Cessation
  • 2002-02-07 CA CA002437782A patent/CA2437782A1/en not_active Abandoned
  • 2002-02-07 WO PCT/US2002/003843 patent/WO2002063210A2/en not_active Application Discontinuation
  • 2002-02-07 KR KR1020037010406A patent/KR100561799B1/ko not_active IP Right Cessation
  • 2002-02-07 EP EP02720942A patent/EP1358431A2/en not_active Withdrawn
  • 2002-02-07 MX MXPA03007073A patent/MXPA03007073A/es active IP Right Grant

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