Illumination – With fluid distributer
Patent
1996-04-10
1997-09-09
Sember, Thomas M.
Illumination
With fluid distributer
362294, 362373, 362365, F21V 2900
Patent
active
056648723
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to a combined lamp and fan assembly comprising a first housing of substantially circular shape containing a lamp unit and having at least one air flow passage extending long the housing and opening at the lower end of the assembly, and a fan unit with a second housing.
BACKGROUND ART
In many applications, both ventilation and lighting are mounted in a ceiling panel, such as in bathrooms, showers, lavatories and kitchens. In U.S. Pat. No. 30,668,341 there is described a ceiling mounted light including a lamp, a heater and a fan.
DISCLOSURE OF INVENTION
It is an object of the present invention to provide a combined ventilation and lighting assembly of compact construction that can be installed in a ceiling panel through a small aperture and that can be easily maintained and adapted to provide lighting or ventilation only.
According to the present invention there is provided an assembly of the above-specified kind, characterized in that the second housing is of substantially the same diameter as the first housing, that the first and second housings have cooperating catches and notches whereby the second housing can be releasably retained at its lower end with the upper end of the first housing to form an extension thereof, the cooperating catches and notches providing the sole mounting for the second housing, and that the second housing opens at its upper end such that air can be drawn axially through the assembly.
The lamp unit is preferably located substantially centrally cross the width of the first housing with the or each air flow passage extending around the outside of the lamp unit. The lamp unit may be located within an enclosure, the enclosure being supported within the first housing by means of a plurality of radial supports. The lamp unit is preferably supported within the enclosure on a flange extending transversely of the enclosure, the flange having a vent aperture therethrough. The fan unit and lamp unit may be controllable separately. Preferably, the fan unit and lamp unit both operate at not more than 50 volts. The first housing may have an externally-extending flange at its lower end arranged to engage the underside of a ceiling panel. The assembly may include a removable bezel arranged to be retained to the lower end of the first housing, there being an air flow passage into the first housing via the bezel.
BRIEF DESCRIPTION OF THE DRAWINGS
A combined lamp and fan assembly in accordance with the present invention, will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a perspective, exploded view of the assembly;
FIG. 2 is a sectional side elevation of the assembly;
FIG 3 is a perspective, exploded view of a modified assembly; and
FIG. 4 is a sectional side elevation of the modified assembly of FIG. 3.
BEST MODES OF CARRYING OUT THE INVENTION
With reference to FIGS. 1 and 2, the assembly has an outer housing I of an insulative plastics material and of a generally cylindrical shape. At its lower end, the housing 1 has a radially-projecting flange 10 with two screw-fixing holes 11. Two channels 12 and 13 of circular section extend vertically, opening externally of the housing via respective narrow slots 14 and 15. Each channel 12 and 13 contains the head 16 of a retaining member 17 having a curved finger 18, which projects horizontally out of the channel. The head 16 has a screw-threaded bore 19 receiving a threaded bolt 20, the head 21 of which is located in a recess 22 at, the lower end of the housing.
Internally, the housing 1 has a central, axial enclosure 24 of cylindrical shape and circular section, with a diameter about half that of the housing 1 so that there is an annular region between the enclosure and the housing. The enclosure 24 extends along a major part of the length of the housing, terminating a short distance above the lower end of the housing 1. The enclosure supports several radial, outwardly-extending webs 31, which divide the annular region between the outside of the e
REFERENCES:
patent: 2010004 (1935-08-01), Beggren
patent: 2189008 (1940-02-01), Kurth
patent: 2258731 (1941-10-01), Blumenthal
patent: 3068341 (1962-12-01), Ortiz et al.
Howie Alasdair Buchanan
Spearman Robert Don Aldo
Vincent David
Sember Thomas M.
Smiths Industries PLC
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