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
  • F21V7/005—Reflectors for light sources with an elongated shape to cooperate with linear 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
  • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
  • F21V17/007—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for shipment or storage
• • 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
  • F21V19/02—Fastening of light sources or lamp holders with provision for adjustment, e.g. for focusing
• • 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
  • F21V7/10—Construction
• • 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
  • F21V7/10—Construction
  • F21V7/16—Construction with provision for adjusting the curvature
• • 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

Definitions

• the present invention relates to luminaires and, in particular, to luminaries having a reflector of adjustable focal length including two curved portions.
• a reflector is described in WO 96/37732 (which has the same inventor as the present application) and will hereafter be termed a doubly arched reflector.
• the object of the present invention is to provide an arrangement whereby such a luminaire can be assembled in a more convenient fashion.
• a tensioning mechanism for the reflector of a doubly arched luminaire comprising a flexible, substantially inextensible filament having a bulbous protrusion formed at each end thereof, and at least one aperture formed in each opposite side of said reflector, each said aperture having a main opening leading into a smaller extension, each said main opening being dimensioned relative to said bulbous protrusions to permit same to pass therethrough and each said extension being dimensioned relative to said bulbous protrusions to prevent same passing therethrough.
• a lamp socket mounting for a doubly arched reflector luminaire said luminaire having a reflector including two leaves extending from a substantially centrally located V-shaped spine, said mounting comprising a bight-shaped base able to be mounted on said spine with the bight of said base facing said spine, a pair of arms extending from said base in a direction away from said bight, a housing extending between said arms and being movable longitudinally along said arms, and fastening means to locate said housing relative to said arms.
• a locating mechanism for a pair of reflector sheets from which the reflector of a doubly arched luminaire is assembled comprising at least one mushroom-shaped stud on one of said sheets and a corresponding keyhole shaped aperture on the other of said sheets, said stud comprising a stalk and a cap and said aperture comprising a main opening and a smaller extension wherein each said stud and aperture are dimensioned so that said cap can pass through said main opening but not said extension and said stalk can be retained in said extension with a friction fit.
• a tensioning mechanism for the reflector of a doubly arched luminaire comprising an aperture formed at one side of said reflector, a swing arm pivotally mounted to the opposite side of said reflector, said swing arm having at least one aperture therein, and a malleable elongate member having a length sufficient to extend from side to side of the tensioned reflector and being able to have each end thereof formed into hook means able to engage said apertures.
• FIG. 1 is an exploded perspective view of a prior art luminaire of the doubly arched reflector type
• FIG. 2 is an end elevation of the luminaire of the preferred embodiment
• FIG. 3 is a partial schematic exploded perspective view illustrating how two sheets can be brought together to form the reflector
• FIG. 4 is an enlarged fragmentary side elevational view of a portion of Fig. 3
• FIG. 5 is a partial perspective view showing the two sheets assembled to form the reflector
• FIG. 6 is an exploded perspective view of the lamp socket mounting for the luminaire
• FIG. 7 is a schematic perspective view showing a first form of reflector tensioning arrangement
• FIG. 8 is an enlarged fragmentary view of a portion of Fig. 7
• FIG. 9 is an enlarged fragmentary view of a portion of Fig. 7,
• FIG. 10 is a schematic partial perspective view of a reflector tensioning arrangement of a second embodiment.
• the reflector 1 of the prior art is formed from two sheets 2 preferably of resilient metal construction which are joined together about a spine 3 in the manner of the pages of a book.
• a tensioning device in the form of a chain 4 and hooks 5 is used to provide the desired adjustment of the focal length of the reflector 1.
• the remaining components of the luminaire are essentially a lamp socket mounting 12 which supports the lamp socket 18 which in turn supports the lamp 20. If desired, a heat shield 17 having perforations 30 can be provided.
• the luminaire 100 of the preferred embodiment is illustrated having a reflector 101 formed from two sheets 102 and 122 essentially as before with a lamp socket mounting 112 and a pair of tensioning filaments 104 (only one of which is illustrated in Fig. 2).
• the sheets 102, 122 are supplied in a compact knock down form stacked one above the other and are then joined together to form a spine 103.
• the sheet 122 is provided with a pair of generally mushroom shaped lugs 107 which each have a central cylindrical stalk 108 and a substantially flat cap 109.
• the reflector sheet 102 is provided with a pair of keyhole apertures 127 each of which has a central opening 128 and a narrow extension 129 extending therefrom. The extensions 129 are substantially parallel.
• the portions of the sheets 102, 122 which are joined together to form the spine 103 each include four holes 111.
• the caps 109 of the lugs 107 are passed through the central openings 128 of the corresponding keyhole apertures 127. This generally locates the two sheets 102, 122 in the correct orientation and configuration. Then the sheets 102, 122 are moved relative to each other in the direction of the spine 103 so as to engage the stalks 108 with the corresponding extensions 129. This results in a friction fit between the lugs 107 and the keyhole apertures 127. The friction fit may be between the stalk 108 and the extension 129, or between the underside of the caps 109 and the surface of the sheets 102, 122, or both.
• the interconnection between the lamp socket mounting 112 and the reflector 101 is effected by means of a base 121 which has a V-shaped bight 122 which is shaped to mate with the spine 103.
• the bight 122 and spine 103 are interconnected by any convenient mechanism such as self-tapping screws (not illustrated) passing through the openings 123 in the bight 122.
• such screws pass into one of the pair of holes 111 so that the lamp socket mounting 112 is positioned at one end of the reflector 101.
• the mounting 112 can be located intermediate the ends of the reflector 101.
• the base 121 has a pair of arms 124 each of which has a longitudinally extending slot 125.
• Lamp socket 18 is conventional and is mounted to an L-shaped cover 132 which closes a rectangular housing 133 having a pair of protruding side walls 134. Each of the side walls 134 has a curved slot 135 therethrough. Located within the housing 133 are electrical connectors and possible ancillary electrical equipment (all not illustrated). In addition, the L-shaped cover 32 has a pair of slots 136 each of which is shaped to receive a corresponding arm 124 of the base 121.
• the base 121 is first secured to the spine 103 of the reflector 101. Then the arms 124 are each passed through the corresponding slot 136 and a screw fastener 137 passed through each of the slots 125 and 135.
• the preferred distance between the longitudinal axis of the lamp to be engaged with socket 18 and the spine 103 can be set.
• the longitudinal axis of the lamp socket 18 can be inclined towards or away from the spine 103 as desired.
• the reflector 101 can be brought into the required shape and hence desired focus, by means of adjusting the two filaments 104.
• the filament 104 has a bulbous protrusion 144 at each end.
• a single keyhole aperture 147 having a central opening and a narrow extension.
• the narrow extension of the keyhole aperture 147 is directed in the direction in which the filament 104 is intended to lie.
• a corresponding keyhole aperture 247 again having a central opening and narrow extension.
• the narrow extension of the aperture 247 again preferably points in the direction of the filament 104.
• adjacent to the keyhole aperture 247 are four additional keyhole apertures 347 each of which has its narrow extension oriented towards the keyhole aperture 247.
• the reflector 102 can be compressed so as to increase the degree of curvature of the double arch.
• One end of the filament 104 with its bulbous protrusion 144 is passed through the central opening of the keyhole aperture 147. Thereafter, the filament 104 is tensioned slightly so as to draw the filament 104 into the narrow extension of aperture 147 and thereby engage the bulbous protrusion 144 with the narrow extension.
• the corresponding bulbous protrusion 144 and filament 104 are passed through the central opening of the keyhole aperture 247 and one of the apertures 347 in turn.
• the bulbous protrusion 144 comes into engagement with the narrow extension of the selected keyhole aperture 347.
• selecting a different aperture 347 enables the tension within the filament 104 to be adjusted.
• a similar arrangement is provided for the other filament 104 at the other end of the reflector 101. In this way the degree of curvature of the doubly arched reflector 101 can be easily and uniformly set.
• Fig. 10 an alternative tensioning mechanism is illustrated which takes the form of a pivoted arm 151 which is connected by means of a rivet 152 to the sheet 122.
• the arm 151 is able to be pivoted in the direction of the arrow in Fig. 10 so as to lie in the position illustrated by dotted lines in Fig. 10 rather than in the extended position illustrated by solid lines in Fig. 10.
• the arm 151 is provided with a number of openings 156 whilst the other reflector sheet 102 is provided with a single opening 155.
• the filament 104 of Figs. 7-9 which is preferably a stainless steel stranded wire, is replaced by a mild steel wire 53 which is malleable so as to form a hook at each end thereof.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Securing Globes, Refractors, Reflectors Or The Like (AREA)
• Non-Portable Lighting Devices Or Systems Thereof (AREA)
• Fastening Of Light Sources Or Lamp Holders (AREA)
• Circuit Arrangement For Electric Light Sources In General (AREA)
• Glass Compositions (AREA)
• Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
• Vehicle Body Suspensions (AREA)

Priority Applications (4)

Applications Claiming Priority (3)

Related Child Applications (4)

Publications (3)

Family

ID=3834400

Family Applications (1)

Country Status (9)

Cited By (1)

Families Citing this family (5)

Family Cites Families (4)

• 2002
  • 2002-02-27 AU AUPS0801A patent/AUPS080102A0/en not_active Abandoned
• 2003
  • 2003-02-26 DK DK03702202.7T patent/DK1488167T3/da active
  • 2003-02-26 CA CA2754628A patent/CA2754628C/fr not_active Expired - Lifetime
  • 2003-02-26 NZ NZ568876A patent/NZ568876A/en not_active IP Right Cessation
  • 2003-02-26 CA CA2718181A patent/CA2718181C/fr not_active Expired - Lifetime
  • 2003-02-26 NZ NZ568877A patent/NZ568877A/en not_active IP Right Cessation
  • 2003-02-26 EP EP03702202A patent/EP1488167B1/fr not_active Expired - Lifetime
  • 2003-02-26 AT AT03702202T patent/ATE503965T1/de active
  • 2003-02-26 DE DE60336547T patent/DE60336547D1/de not_active Expired - Lifetime
  • 2003-02-26 ES ES03702202T patent/ES2362215T3/es not_active Expired - Lifetime
  • 2003-02-26 NZ NZ535580A patent/NZ535580A/en not_active IP Right Cessation
  • 2003-02-26 CA CA2516674A patent/CA2516674C/fr not_active Expired - Lifetime
  • 2003-02-26 AU AU2003205431A patent/AU2003205431B2/en not_active Ceased
  • 2003-02-26 WO PCT/AU2003/000234 patent/WO2003072998A1/fr not_active Application Discontinuation

Non-Patent Citations (2)

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