The present invention relates to the field of lighting fixtures, and in particular, relates to
canopy lighting fixtures that are adapted to be mounted on a ceiling.
BACKGROUND
2 In an emerging era of rapid development in electronic technology, advancement in product
design, appearance, and more obvious sophisticated electronic components used in the
products is observed. A continuous development is recognized in field of light emitting
diodes (hereinafter ‘LED’) too. Generally, the LEDs are packed in different ways in different
lighting fixtures. One such lighting fixture is canopy lighting fixture.
3 Generally, many of the canopy lighting fixtures are intended to be installed at vehicle fuel
dispensing service stations typically having flat roofs supported by hollow vertical columns
made of corrodible materials, particularly metals. These canopy lighting fixtures typically
include one or more LEDs inside. Further, the lighting fixtures that are mounted to overhead
canopy structure are increasingly common for gasoline service stations, truck stops and the
like, and are well known in the lighting art. Such lighting fixtures serve the purpose of
providing light to outdoor areas. The canopy lighting fixtures are typically mounted to the
horizontal sheet which forms the overhead ceiling of the canopy structure.
4 Many of the presently available lighting fixtures are mounted on a horizontal sheet made up
of metals, which increases the overall cost of the lighting fixture. Further, in most of the
cases, the horizontal sheet tends to corrode over a period of time, thereby further increasing
the expenses. In addition, such columns are often used as conduits for draining water from
the flat roof, thus exposing interior of the columns to corrosive deterioration and loss of
strength needed to support the roof. Further, high overhead mounting and a fact that the
lighting fixtures are to be recessed above the canopy sheet/horizontal sheet tend to make
installation and regular maintenance of the lighting fixtures difficult and time-consuming.
5 In light of the above stated discussion, there is a need for a canopy lighting fixture that could
overcome the above stated disadvantages. Further, canopy lighting fixture should be costeffective.
SUMMARY
6 In an aspect of the present disclosure, a lighting fixture is provided. The lighting fixture is
adapted to be mounted on a ceiling. The lighting fixture includes a powder coated stainless
steel sheet and a lighting enclosure. The powder coated stainless steel sheet is a two
dimensional sheet having a two-dimensional cut-out in centre. The two-dimensional cut-out
in centre of the powder coated stainless steel sheet enables the powder coated stainless steel
sheet to get mechanically attached to the lighting enclosure through one or more connectors.
Dimensions of the lighting enclosure are slightly smaller than dimensions of the twodimensional
cut-out. The lighting enclosure includes a metal core printed circuit board
having a plurality of lighting assemblies, an extrusion post enclosing the metal core printed
circuit board and metallic die-casted glass frame enclosing the extrusion post. Each of the
plurality of lighting assemblies includes a plurality of light sources. The extrusion post is
extruded by an extrudible material. The extrudible material is aluminium. The lighting
fixture is mounted on the ceiling via a plurality of steel clamps. The powder coated stainless
steel sheet reduces an overall manufacturing cost of the lighting fixture.
7 In an embodiment of the present disclosure, the lighting fixture is a canopy lighting fixture.
8 In an embodiment of the present disclosure, the lighting fixture includes a glass covering
over the metal core printed circuit board.
9 In an embodiment of the present disclosure, the extrusion post acts as a heat sink body and
radiates dissipated heat.
10 In an embodiment of the present disclosure, the lighting fixture includes a gasketing
mechanism. The gasketing mechanism is configured to mechanically seal a space between
the extrusion post and the metallic die-casted glass frame. The gasketing mechanism
includes a gasket made of silicon.
11 In an embodiment of the present disclosure, the lighting fixture includes a driver. The driver
is configured to regulate voltage and current through the lighting fixture.
12 In an embodiment of the present disclosure, the lighting fixture includes a junction box. The
junction box is configured to enclose electrical wirings.
13 In an embodiment of the present disclosure, the lighting fixture includes a cable wiring. The
cable wiring is configured to transfer electrical signals to the lighting fixture.
14 In an embodiment of the present disclosure, each of plurality of lighting assemblies being
connected to each other in the metal core printed circuit board.
15 In an embodiment of the present disclosure, each of plurality of lighting assemblies function
independently in the metal core printed circuit board.
16 In an embodiment of the present disclosure, the extrudible material is at least one of metals,
polymers, ceramics and concrete.
BRIEF DESCRIPTION OF THE FIGURES
17 Having thus described the invention in general terms, reference will now be made to the
accompanying drawings, which are not necessarily drawn to scale, and wherein:
18 FIG. 1 illustrates a lighting fixture, in accordance with various embodiments of the present
disclosure;
19 FIG. 2 illustrates a side view of the lighting fixture, in accordance with various embodiments
of the present disclosure; and
20 FIG. 3 illustrates a top view of the lighting fixture, in accordance with various embodiments
of the present disclosure.
DETAILED DESCRIPTION
21 It should be noted that the terms "first", "second", and the like, herein do not denote any
order, quantity, or importance, but rather are used to distinguish one element from another.
Further, the terms "a" and "an" herein do not denote a limitation of quantity, but rather denote
the presence of at least one of the referenced item.
22 FIG. 1 illustrates a lighting fixture 100, in accordance with various embodiments of the
present disclosure. Generally, lighting fixtures are lighting units used to illuminate homes,
playgrounds, auditoriums, halls and the like. In an embodiment of the present disclosure, the
lighting fixture 100 is a canopy lighting fixture used to illuminate petrol stations, gas stations
or any other fuel stations. The lighting fixture 100 is adapted to be mounted on ceilings of
the petrol stations, gas stations or any other fuel stations.
23 As shown in FIG. 1, the lighting fixture 100 includes a powder coated stainless steel sheet
102. The powder coated stainless steel sheet 102 is a two-dimensional sheet having a twodimensional
cut-out in centre. In simpler terms, the powder coated stainless steel sheet 102
is a two-dimensional sheet plank which is empty and cut from its central region. The twodimensional
sheet can be a square shaped sheet, rectangular sheet, or any other quadrilateral
sheet. Further, in an embodiment of the present disclosure, shape of the two-dimensional
cut-out in the centre of the powder coated stainless steel sheet 102 is similar to the shape of
the powder coated stainless steel sheet 102. In another embodiment of the present disclosure,
the shape of the two-dimensional cut-out in the centre of the powder coated stainless steel
sheet 102 is different from the shape of the powder coated stainless steel sheet 102.
24 A sole purpose of leaving the two-dimensional cut-out in the centre is to enable the powder
coated stainless steel sheet 102 to get connected and/or mechanically attached to a lighting
enclosure 104 through one or more connectors 106. Further, dimensions of the lighting
enclosure 104 are slightly smaller than dimensions of the two-dimensional cut-out in the
powder coated stainless steel sheet 102. The smaller size of the lighting enclosure 104
enables the lighting enclosure 104 to get easily attached to the powder coated stainless steel
sheet 102. The one or more connectors 106 include but may not be limited to a plurality of
bolts, a plurality of screws and a plurality of nuts.
25 In an embodiment of the present disclosure, an approximate thickness of the powder coated
stainless steel sheet 102 is 0.8 millimeters. Further, approximate dimensions of the powder
coated stainless steel sheet 102 is 2'X2'. In an embodiment of the present disclosure, the
2'X2' sheet can be easily mounted on the ceilings of the petrol stations, gas stations and the
like. Further, the dimensions of the powder coated stainless steel sheet 102 (2'X2') is
approximately same as that of a block of a roof of the petrol/gas station which enables easy
mounting of the lighting fixture 100 on the ceilings of the petrol stations, gas stations and/or
any other fuel stations. In simpler terms, the lighting enclosure 104 is typically mounted to
the powder coated stainless steel sheet 102 and the powder coated stainless steel sheet 102
forms an overhead ceiling of the petrol stations, gas stations and/or any other fuel stations.
26 In an embodiment of the present disclosure, the powder coated stainless steel sheet 102 is
composed of a 202 grade stainless steel. The 202 grade stainless steel is made from
Chromium, Nickel and Manganese and base metal iron having similar properties to
A240/SUS 302 stainless steel. The 202 grade stainless steel offers a reasonable toughness at
low temperatures. Further, using the 202 grade stainless steel as a make-up material of the
powder coated stainless steel sheet 102 makes the lighting fixture 100 a more sustainable and
durable fixture as the 202 grade stainless steel possesses an excellent corrosion resistance
property, a higher harness and a reasonable strength. Moreover, the powder coated stainless
steel sheet 102 reduces an overall manufacturing cost of the lighting fixture 100.
27 The lighting enclosure 104 includes a metal core printed circuit board 108, an extrusion post
110 and a metallic die-casted glass frame 112. The metal core printed circuit board 108
mechanically supports and electrically connects various electronic components by utilizing
conductive tracks, pads and other features which are laminated onto an electrically nonconductive
but thermally conductive substrate. The metal core printed circuit board 108 is a
metallic board that can bear large mechanical loads, high temperature, high level of
dimensional stability and the like. In an embodiment of the present disclosure, the metal core
printed circuit board 108 is a coated metal core board. In an embodiment of the present
disclosure, the metal core printed circuit board 108 may/ may not include a ceramic
electrically non conductive and thermally conductive layer to help the metal core printed
circuit board 108 to conduct heat.
28 Further, the metal core printed circuit board 108 includes a plurality of lighting assemblies
114. In an embodiment of the present disclosure, each of the lighting assemblies 114 is
connected to each other in the metal core printed circuit board 108. In another embodiment
of the present disclosure, each of the lighting assemblies 114 functions independently in the
metal core printed circuit board 108.
29 Furthermore, each of the plurality of lighting assemblies 114 includes a plurality of light
sources. The plurality of light sources is a plurality of light emitting diodes 116. Each of the
plurality of light emitting diodes 116 is a two lead semi-conductor light source that emits
light when activated, or in other words, emits light when current passes through it. In an
embodiment of the present disclosure, colour temperature of each of the plurality of light
emitting diodes 116 is approximately 6500 K. The color temperature of each of the plurality
of light emitting diodes 116 is a temperature of an ideal black-body radiator that radiates light
of comparable hue to that of each of the plurality of light sources.
30 In an embodiment of the present disclosure, number of the plurality of light emitting diodes
116 utilized is 28. Further, the plurality of light emitting diodes 116 may/may not be densely
packed together in each of the plurality of lighting assemblies 114. In an embodiment of the
present disclosure, each of the plurality of light emitting diodes 116 are arranged horizontally
on the metal core printed circuit board 108. In an embodiment of the present disclosure, each
of the plurality of light emitting diodes 116 will glow when the input voltage is near to a
threshold value of the plurality of light emitting diodes 116.
31 Further, the extrusion post 110 encloses the metal core printed circuit board 108. The
extrusion post 110 is extruded by an extrudible material. The extrudible material is
aluminium. In general, the extrudible material is an alloy of aluminium that can be processed
by standard extrusion processes. In practice, the extrudible material is commonly a
polyolefin material useful in processes such as blown and cast film, blow molding and
extrusion coating.
32 In an embodiment of the present disclosure, the extrudible material used to extrude the
extrusion post 110 is aluminium. Further, the extrusion post 110 acts as a heat sink body and
radiates dissipated heat. Going further, the metallic die-casted glass frame 112 encloses the
extrusion post 110. The metallic die-casted glass frame 112 is an aluminium die-casted frame
and is formed by forcing molten aluminium under high pressure into a mold cavity. The
mold cavity is created using two hardened tool steel dies which have been machined into
shape.
33 Furthermore, a glass covers the metal core printed circuit board 108. In an embodiment of
the present disclosure, the glass is a toughened float glass. The glass is resistant to thermal
shock and thermal stress. Further, a low coefficient of thermal expansion of the glass
increases the lumen maintenance of the plurality of light emitting diodes 116.
34 In an embodiment of the present disclosure, the glass can withstand rapid temperature
variations. Moreover, when subjected to uneven temperature variations, the glass tends to
shatter into small granules which are less harmless.
35 Further, the lighting fixture 100 includes a gasketing mechanism. The gasketing mechanism
mechanically seals a space between the extrusion post 110 and the metallic die-casted glass
frame 112. Further, the gasketing mechanism includes a gasket made of silicon. The gasket
prevents leakage from or into the joined objects (the extrusion post 110 and the metallic diecasted
glass frame 112) under compression.
36 In an embodiment of the present disclosure, the lighting fixture 100 may/may not include a
plurality of washers. The plurality of washers includes one or more plain washers and one or
more spring washers.
37 FIG. 2 illustrates a side view 200 of the lighting fixture 100, in accordance with various
embodiments of the present disclosure. It may be noted that to illustrate system elements of
FIG. 2, references will be made to the system elements of FIG. 1. The side view 200
includes a driver 202, a junction box 204, a plurality of steel clamps 206 and a cable wiring
208.
38 The driver 202 regulates voltage and current throughout the lighting fixture 100. The driver
202 is an electrical circuit/component that controls other circuits/components, for example,
high power transistors, lighting circuits, liquid crystal displays and the like. Further, the
driver 202 operates the lighting fixture 100 within a broad range of input voltages. Further,
the driver 202 supplies a constant current to each of the plurality of light emitting diodes 116
even for varying input voltages. The junction box 204 encloses electrical wirings of the
lighting fixture 100. In other words, the junction box 204 is a container for electrical
connections, usually intended to deter tampering of the electrical connections. Further, the
junction box 204 is usually constructed by using metal or hard plastic. Further, general
appearance of the junction box 204 is either a square or rectangular design. A lid on the front
allows access to its interior. The lid may be recessed in the front of the junction box 204, or
the entire facing may swing upward or downward to allow access to the junctions within the
lighting fixture 100.
39 The plurality of steel clamps 206 facilitates mounting of the lighting fixture 100 on the
ceiling. Further, each of the plurality of steel clamps 206 is a U-shaped clamp. It may be
noted that in FIG. 2, each of the plurality of steel clamps 206 is a U-shaped clamp; however
those skilled in the art would appreciate that each of the plurality of steel clamps 206 may
have any other shape known in the art which could facilitates mounting of the powder coated
stainless steel sheet 102 on the ceiling.
40 The cable wiring 208 transfers electrical signals to the lighting fixture 100. The cable wiring
208 is a three core wire cable. In other words, the three core wire cable includes three wires
and is covered by a cable jacket.
41 FIG. 3 illustrates a top view 300 of the lighting fixture 100, in accordance with various
embodiments of the present disclosure. It may be noted that to illustrate system elements of
FIG. 3, references will be made to the system elements of FIG. 1 and FIG. 2. The top view
300 includes the lighting enclosure 104 mechanically supported by the powder coated
stainless steel sheet 102. Further, the top view 300 depicts the plurality of steel clamps 206.
As stated earlier, each of the plurality of steel clamps 206 facilitates mounting of the lighting
fixture 100 on the ceiling.
42 Further, the top view 300 shows the driver 202, the junction box 204 and the cable wiring
208. Further, functions of the driver 202, the junction box 204 and the cable wiring 208 are
described in the detailed description of FIG. 2.
43 While the disclosure has been presented with respect to certain specific embodiments, it will
be appreciated that many modifications and changes may be made by those skilled in the art
without departing from the spirit and scope of the disclosure. It is intended, therefore, by the
appended claims to cover all such modifications and changes as fall within the true spirit and
scope of the disclosure.
CLAIMS
What is claimed is:
1. A lighting fixture adapted to be mounted on a ceiling, the lighting fixture comprising:
a powder coated stainless steel sheet, wherein the powder coated stainless steel
sheet being a two-dimensional sheet having a two-dimensional cut-out in centre;
a lighting enclosure, wherein the two-dimensional cut-out in the centre of the
powder coated stainless steel sheet enables the powder coated stainless steel sheet to get
mechanically attached to the lighting enclosure through one or more connectors, wherein
dimensions of the lighting enclosure are slightly smaller than dimensions of the twodimensional
cut-out, and wherein the lighting enclosure comprises:
a metal core printed circuit board, wherein the metal core printed circuit
board comprises a plurality of lighting assemblies, wherein each of the plurality of
lighting assemblies comprises a plurality of light sources, and wherein each of the
plurality of light sources being a plurality of light emitting diodes;
an extrusion post, wherein the extrusion post being adapted to enclose the
metal core printed circuit board, wherein the extrusion post being extruded by an
extrudible material, and wherein the extrudible material being aluminium; and
a metallic die-casted glass frame, wherein the metallic die-casted glass
frame being adapted to enclose the extrusion post,
wherein the lighting fixture being mounted on the ceiling via a plurality of steel clamps,
and wherein the powder coated stainless steel sheet reduces an overall manufacturing cost
of the lighting fixture.
2. The lighting fixture as claimed in claim 1, wherein the lighting fixture being a canopy
lighting fixture.
3. The lighting fixture as claimed in claim 1, further comprising a glass covering over the
metal core printed circuit board.
4. The lighting fixture as claimed in claim 1, wherein the extrusion post acts as a heat sink
body and radiates dissipated heat.
5. The lighting fixture as claimed in claim 1, further comprising a gasketing mechanism,
wherein the gasketing mechanism being adapted to mechanically seal a space between
the extrusion post and the metallic die-casted glass frame, wherein the gasketing mechanism
comprises a gasket made of silicon.
6. The lighting fixture as claimed in claim 1, further comprising a driver adapted to regulate
voltage and current through the lighting fixture.
7. The lighting fixture as claimed in claim 1, further comprising a junction box adapted to
enclose electrical wirings.
8. The lighting fixture as claimed in claim 1, further comprising a cable wiring adapted to
transfer electrical signals to the lighting fixture.
9. The lighting fixture as claimed in claim 1, wherein each of plurality of lighting assemblies
being connected to each other in the metal core printed circuit board.
10. The lighting fixture as claimed in claim 1, wherein each of plurality of lighting assemblies
function independently in the metal core printed circuit board.