DK2325554T3

DK2325554T3 - MOUNTING MOUNTING FITTING

Info

Publication number: DK2325554T3
Application number: DK10189379.0T
Authority: DK
Inventors: Paul Andrew Cronk
Original assignee: Paul Andrew Cronk
Priority date: 2002-02-27
Filing date: 2003-02-26
Publication date: 2015-03-09
Also published as: EP2325550B1; HUE024510T2; ES2530745T3; EP2325554A1; EP2325554B1; ES2478868T3; DK2325550T3; EP2325550A1

Description

TECHNICAL FIELD

The present invention relates to luminaires and, in particular, to luminaries having a reflector of adjustable focal length including two curved portions. Such 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 above described luminaire is normally sold in knockdown form and is assembled by the purchaser. Hitherto, this assembly process has been relatively time consuming because of the large number of bolts, nuts and like fasteners which must be assembled. In particular, the means by which the lamp socket mounting is held in position are cumbersome and require considerable adjustment to ensure that the longitudinal axis of the lamp is parallel to the longitudinal axis of the reflector. FR 1,534,064 (Duval) discloses a flat support ellipse centrally located within a reflector 7. A flat plate 4a connects to the centre of the support ellipse at one of various adjustable positions to move the lamp(s) 10 in the direction of their longitudinal axis (typically horizontally). Two arms 3 extend from the horizontal plate 4a to a vertical plate 4b on which the lamp(s) 10 is/are mounted. Provision is made for changing the vertical position of the lamp socket 13 to accommodate different size lamps 10 but this does not change the vertical position of the lamp longitudinal axis which remains at a fixed distance from the reflector 7. The reflector 7 is fixed and does not have a variable focus. Thus the lamp 10 should always be the same fixed distance from the reflector to optimize the performance of the reflector 7. No housing for auxiliary equipment is disclosed in this specification. FR 1.534.064 discloses a lamp socket mounting according to the preamble of claim 1.

AU33140/1999 (Sunnyfield) discloses a single flat vertical plate 28 which connects to the spine 10 of a W-shaped reflector. A lamp socket 42 is mounted on the plate 28 towards one vertical end of the plate. Inverting the plate 28 enables a different vertical distance between lamp longitudinal axis and reflector to be selected. Thus either one of two different vertical distances between lamp and reflector can be selected, but the vertical distance between lamp and reflector cannot be smoothly adjusted through a range of distances. GENESIS OF THE INVENTION

The genesis of the present invention is a desire to provide an arrangement whereby such a luminaire can be assembled in a more convenient fashion.

SUMMARY OF THE INVENTION

According to the invention, there is provided a lamp socket mounting and a luminaire as set out in the accompanying claims.

BRIEF DESCRIPTION OF THE DRAWINGS

Embodiments of the present invention will now be described with reference to the drawings in which:

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, and

Fig. 3 is an exploded perspective view of the lamp socket mounting for the luminaire.

DETAILED DESCRIPTION

As seen in Fig. 1, 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.

It will be apparent to those skilled in the art that the means by which the lamp socket mounting 12 is held in position are cumbersome and require considerable adjustment to ensure that the longitudinal axis of the lamp 20 is parallel to the longitudinal axis of the reflector 1. Furthermore, the chain 4 whilst being practical is a relatively expensive method of ensuring that the required tension in the reflector is achieved. In addition, because of the tendency of the chain 4 to collapse unless placed under tension, many purchasers find it awkward to interengage the hooks 5 and the links of chain 4.

Turning now to Figs. 2 and 3, 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 lamp socket mounting 112 will now be described with reference to Fig. 3. 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. Preferably such screws pass into one pair of the two pairs of holes or opposite ends of the reflector as seen in Fig. 1. In this way the lamp socket mounting 112 is positioned at one end of the reflector 1 or 101. Alternatively, the mounting 112 can be located intermediate the ends of the reflector 1 or 101.

In addition, 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.

In operation, 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. By sliding the housing 133 up and down the arms 124, the preferred distance between the longitudinal axis of the lamp to be engaged with socket 18, and the spine 103 can be set. In addition, by movement of both side walls 134 simultaneously in the same direction relative to the arms 124, the longitudinal axis of the lamp socket 18 can be inclined towards or away from the spine 103 as desired. Furthermore, should the lamp socket axis not be parallel to that of the spine 103, one of the side walls 134 can be pushed forwardly slightly whilst the other of the side walls 134 can be pushed rearwardly slightly, thereby moving the axis of the lamp socket 18 to right or left. Once these fine adjustments are made, the screw fasteners 137 are made fast.

It will be appreciated by those skilled in the art that the above described adjustment and alignment of the lamp socket axis is able to be easily and conveniently carried out by the end user once the lamp has been installed so as to ensure that the reflector 101 operates to the maximum of its designed potential. This is not easy to accomplish using the threaded fastener arrangement illustrated in Fig. 1.

The foregoing describes only one embodiment of the present invention and modifications, obvious to those skilled in the art, can be made thereto without departing from the scope of the present invention.

The term "comprising" (and its grammatical variations) as used herein is used in the inclusive sense of "having" or "including" and not in the exclusive sense of "consisting only of.

Claims

ASSEMBLY DEVICE FOR A LAMP FITTING

1. Lamp mounting for a double curved light reflector to allow a lamp with a longitudinal axis to be mounted with the longitudinal axis of the lamp set at an adjustable distance from the reflector, the lamp (100) having a reflector (101) with adjustable focal length with two blades (102) extending from a substantially centrally located V-shaped tip (103), characterized in that the mounting (112) comprises: a) a bay-shaped base (121) mountable on the tip with the base (b) a pair of arms (124), each extending from the base in a direction away from the bay and substantially perpendicular to the longitudinal axis of the lamp; (c) a housing (133); extending between the arms, which housing has a lamp holder (18) for the lamp, and which housing can be moved longitudinally along the arms to adjust the distance between the longitudinal axis of the lamp and the reflector, and d) a fastener (137) for positioning the housing in relation to the arm e.

The assembly of claim 1, wherein the housing includes a pair of slots (136) spaced apart with the distance between the arms, each arm passing through the corresponding slot.

The assembly of claim 2, wherein each arm includes a longitudinally extending notch (125) and the fastener comprises a pair of fasteners (137), each having a shaft which passes through the notch and can engage. the House.

The assembly of claim 3, wherein each fastening shaft engages a corresponding aperture (135) formed in the housing.

The assembly of claim 4, wherein each corresponding opening (135) has a substantial extension in a direction substantially perpendicular to the corresponding arm (124).

The assembly of claim 5, wherein each corresponding opening (135) is substantially curved to allow a longitudinal axis of the lamp to be tilted relative to the tip.

Lighting with a lamp mounting according to any one of claims 1-6.

Lighting according to claim 7 comprising an adjustable focal length reflector (101) and two blades (102) extending from a substantially centrally located V-shaped tip (103).