DESC:FIELD OF THE INVENTION

The present disclosure relates to lighting devices and more particularly, relates to a lighting device with improved heat dissipation.

BACKGROUND

Generally, a lighting device is defined as a means to provide light to achieve practical use and aesthetic effects. The lighting device is used everywhere, for example, in homes, in corporate buildings, as streetlights, etc. The lighting device accounts for approximately 45% of the total power used in the house or the office premises. Hence, many technological developments have occurred to reduce power consumption by the lighting device. For instance, conventional lamps have been replaced by LED lamps which consume less power and are now available at an affordable rate in the market. Further, in this regard, different types of LED-based lighting devices are available in the market, for example, an edge-lit panel light and a back-lit panel light. The back-lit panel light is defined as an array of LEDs placed on a plate horizontally and shining vertically down into a space, which is to be illuminated, through a diffuser.

Further, the edge-lit panel light is defined as a configuration where a row of LEDs is placed on a frame of a panel of the edge-lit panel light. The row of LEDs shines horizontally into a light-guiding plate. The light guiding plate directs the light downwards through a diffuser. However, a conventional configuration of the edge-lit panel light has a limitation, that the diffuser configured in the edge-lit panel light results in loss of light and also leads to a requirement of an additional component to maintain the working of the edge-lit panel light. So, there is a requirement to provide the lighting device, that is, the edge-lit panel light which eliminates loss of light and maintains efficient output from the edge-lit panel light.
In this regard, various technological solutions have been provided to overcome the problem as discussed above. For instance, in a known art, to maintain the efficiency of the light in the edge-lit panel light and to fulfil the requirement/demand of the user, an edge-lit panel light having multiple LEDs to provide a plurality of lighting options, is disclosed. The plurality of lighting options includes access to warm light and normal light, subsequently and/or simultaneously, as per the requirement of the user. The user may access the warm light and the normal light by operating a single switch. However, the configuration as disclosed has a limitation in that the disclosed edge-lit panel light generates an increased amount of heat in a light panel. The light panel is made up of a plastic material that hinders heat dissipation from the edge-lit panel light. Thus, this configuration impacts the overall efficiency of the edge-lit panel light.

Hence, there is a requirement to provide the lighting device having multiple LEDs ensuring efficient heat dissipation from the lighting device and ensuring efficient light from the lighting device while operating in the plurality of lighting options.

SUMMARY

This summary is provided to introduce a selection of concepts, in a simplified format, that are further described in the detailed description of the invention. This summary is neither intended to identify key or essential inventive concepts of the invention and nor is it intended for determining the scope of the invention.

The present disclosure aims to provide a lighting device having multiple LEDs ensuring efficient heat dissipation from the lighting device and efficient light from the lighting device while operating in at least one of predetermined switching modes.

In an embodiment of the present disclosure, a lighting device, that has, a cover member, a base plate, and a heat sink plate, is disclosed. The base plate is detachably attached to the cover member. The base plate comprises a first set of LEDs to reflect a light to illuminate an ambient environment. The heat sink plate is disposed between the base plate and the cover member. The heat sink plate comprises a second set of LEDs to reflect a light toward the base plate to illuminate the ambient environment. The heat sink plate is adapted to dissipate heat generated by at least one of the first set of LEDs and the second set of LEDs while reflecting light to illuminate the ambient environment when the lighting device is operated in at least one of predetermined switching modes.

The present disclosure ensures a simple configuration of the lighting device providing efficient heat dissipation while ensuring the operation of the lighting device in the at least one of predetermined switching modes. The operation of the lighting device in the at least one of predetermined switching provides a plurality of lighting options to a user. Further, the present disclosure ensures efficient lighting from the lighting device while eliminating the requirement for additional components. Therefore, the present disclosure ensures efficient heat dissipation from the lighting device and efficient light from the lighting device without the requirement of the additional components, while operating in the at least one of predetermined switching modes.

To further clarify the advantages and features of the present invention, a more particular description of the invention will be rendered by reference to specific embodiments thereof, which is illustrated in the appended drawings. It is appreciated that these drawings depict only typical embodiments of the invention and are therefore not to be considered limiting of its scope. The invention will be described and explained with additional specificity and detail with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

These and other features, aspects, and advantages of the present invention will become better understood when the following detailed description is read with reference to the accompanying drawings in which like characters represent like parts throughout the drawings, wherein:

Figure 1A illustrates an assembled view of a lighting device, according to an embodiment of the present disclosure;

Figure 1B illustrates an exploded view of the lighting device, according to an embodiment of the present disclosure;

Figure 2A illustrates a top perspective view of a cover member of the lighting device, according to an embodiment of the present disclosure;

Figure 2B illustrates a bottom perspective view of the cover member of the lighting device, according to an embodiment of the present disclosure;

Figure 3 illustrates a perspective view of an outer ring member of the lighting device, according to an embodiment of the present disclosure;

Figure 4 illustrates a planar view of a reflector sheet and a heat sink plate of the lighting device, according to an embodiment of the present disclosure;

Figure 5 illustrates a perspective view of a light guiding plate of the lighting device, according to an embodiment of the present disclosure;

Figure 6 illustrates a perspective view of a base plate of the lighting device, according to an embodiment of the present disclosure; and

Figure 7 illustrates a sectional view of the lighting device, according to an embodiment of the present invention.

Further, skilled artisans will appreciate that elements in the drawings are illustrated for simplicity and may not have necessarily been drawn to scale. Furthermore, in terms of the construction of the device, a plurality of components of the device may have been represented in the drawings by conventional symbols, and the drawings may show only those specific details that are pertinent to understanding the embodiments of the present invention so as not to obscure the drawings with details that will be readily apparent to those of ordinary skill in the art having benefit of the description herein.

DETAILED DESCRIPTION OF FIGURES

For the purpose of promoting an understanding of the principles of the invention, reference will now be made to the embodiment illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended, such alterations and further modifications in the illustrated system, and such further applications of the principles of the invention as illustrated therein being contemplated as would normally occur to one skilled in the art to which the invention relates. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skilled in the art to which invention belongs. The system and examples provided herein are illustrative only and not intended to be limiting.

For example, the term “some” as used herein may be understood as “none” or “one” or “more than one” or “all.” Therefore, the terms “none,” “one,” “more than one,” “more than one, but not all” or “all” would fall under the definition of “some.” It should be appreciated by a person skilled in the art that the terminology and structure employed herein is for describing, teaching, and illuminating some embodiments and their specific features and elements and therefore, should not be construed to limit, restrict or reduce the spirit and scope of the present disclosure in any way.

For example, any terms used herein such as, “includes,” “comprises,” “has,” “consists,” and similar grammatical variants do not specify an exact limitation or restriction, and certainly do not exclude the possible addition of a plurality of features or elements, unless otherwise stated. Further, such terms must not be taken to exclude the possible removal of the plurality of the listed features and elements, unless otherwise stated, for example, by using the limiting language including, but not limited to, “must comprise” or “needs to include.”

Whether or not a certain feature or element was limited to being used only once, it may still be referred to as “plurality of features” or “plurality of elements” or “at least one feature” or “at least one element.” Furthermore, the use of the terms “plurality of” or “at least one” feature or element do not preclude there being none of that feature or element, unless otherwise specified by limiting language including, but not limited to, “there needs to be plurality of…” or “plurality of elements is required.”

Unless otherwise defined, all terms and especially any technical and/or scientific terms, used herein may be taken to have the same meaning as commonly understood by a person ordinarily skilled in the art.

Reference is made herein to some “embodiments.” It should be understood that an embodiment is an example of a possible implementation of any features and/or elements of the present disclosure. Some embodiments have been described for the purpose of explaining plurality of the potential ways in which the specific features and/or elements of the proposed disclosure fulfil the requirements of uniqueness, utility, and non-obviousness.

Use of the phrases and/or terms including, but not limited to, “a first embodiment,” “a further embodiment,” “an alternate embodiment,” “one embodiment,” “an embodiment,” “multiple embodiments,” “some embodiments,” “other embodiments,” “further embodiment”, “furthermore embodiment”, “additional embodiment” or other variants thereof do not necessarily refer to the same embodiments. Unless otherwise specified, plurality of particular features and/or elements described in connection with plurality of embodiments may be found in one embodiment, or may be found in more than one embodiment, or may be found in all embodiments, or may be found in no embodiments. Although plurality of features and/or elements may be described herein in the context of only a single embodiment, or in the context of more than one embodiment, or in the context of all embodiments, the features and/or elements may instead be provided separately or in any appropriate combination or not at all. Conversely, any features and/or elements described in the context of separate embodiments may alternatively be realized as existing together in the context of a single embodiment.

Any particular and all details set forth herein are used in the context of some embodiments and therefore should not necessarily be taken as limiting factors to the proposed disclosure.

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

For the sake of clarity, the first digit of a reference numeral of each component of the present disclosure is indicative of the Figure number, in which the corresponding component is shown. For example, reference numerals starting with digit “1” are shown at least in Figure 1. Similarly, reference numerals starting with digit “2” are shown at least in Figure 2.

Figure 1A illustrates an assembled view of a lighting device 100, according to an embodiment of the present disclosure. Figure 1B illustrates an exploded view of the lighting device 100, according to an embodiment of the present disclosure. Figure 2A illustrates a top perspective view of a cover member 102 of the lighting device 100, according to an embodiment of the present disclosure. Figure 2B illustrates a bottom perspective view of the cover member 102 of the lighting device 100, according to an embodiment of the present disclosure. Figure 3 illustrates a perspective view of an outer ring member 106 of the lighting device 100, according to an embodiment of the present disclosure. Figure 4 illustrates a planar view of a reflector sheet 108 and a heat sink plate 110 of the lighting device 100, according to an embodiment of the present disclosure. Figure 5 illustrates a perspective view of a light guiding plate 112 of the lighting device 100, according to an embodiment of the present disclosure. Figure 6 illustrates a perspective view of a base plate 104 of the lighting device 100, according to an embodiment of the present disclosure. The lighting device 100 may be employed in houses, corporate buildings, and similar premises to illuminate a space. In the illustrated embodiment, the lighting device 100 is an edge-lit light panel having multiple LEDs, without departing from the scope of the present disclosure.

Referring to Figures 1a to 6, the lighting device 100 may include but is not limited to, the cover member 102, the base plate 104, the outer ring member 106, the heat sink plate 110, details of which will be provided in the subsequent paragraphs.

Referring to Figures 1a to 2b, the cover member 102 may include a holding member 202, a plurality of vents 204, an outer plate 210, a protruded member 208, and a plurality of locking members 206. The holding member 202 may be adapted to hold a panel light of the lighting device 100. The plurality of vents 204 may be adapted to dissipate heat from the lighting device 100 to the environment. Further, the cover member 102 may be adapted to be attached to the base plate 104 through the plurality of locking members 206 provided on the protruded member 208. The protruded member 208 may be adapted to be received in the base plate 104 in a manner that the other components of the lighting device 100 may be sandwiched between the base plate 104 and the cover member 102.

Referring to Figures 1a to 3, the outer ring member 106 may be adapted to be disposed between the base plate 104 and the cover member 102 such that the outer ring member 106 may be sandwiched between the base plate 104 and the cover member 102. The outer ring member 106 has an interface with the base plate 104 and the cover member 102. The outer ring 106 may include an opening 302 and a plate 304. The outer ring member 106 may be disposed such that the protruded member 208 of the cover member 102 may be received in the opening 302 of the outer ring member 106. Further, the plate 304 may be adapted to receive the outer plate 210 of the cover member 102 such that the outer plate 210 rests on the plate 304 of the outer ring member 106.

Referring to Figures 1a, 1b, 3, and 4, the heat sink plate 110 may be disposed between the base plate 104 and the cover member 102. The heat sink plate 110 may be received in the cover member 102 through the opening 302 of the outer ring member 106. The heat sink plate 110 may include a second set of LEDs 704 (as shown in Figure 7) to reflect the light towards the base plate 104 to illuminate an ambient environment. In an embodiment, the ambient environment may be a room, a hall, or an office complex without departing from the scope of the present disclosure. In an embodiment, the heat sink plate 110 may be disposed in a manner that a part of the heat sink 110 may be placed between the second set of LEDs 704 and a first set of LEDs 702 (as shown in Figure 7), where the first set of LEDs 702 may be installed on the base plate 104. Further, a reflector sheet 108 may be installed on the heat sink plate 110 and disposed between the heat sink plate 110 and a light guiding plate 112. The reflector sheet 108 may be adapted to reflect the light generated from the second set of LEDs 704 (as shown in Figure 7) towards the base plate 104 to illuminate the ambient environment. The reflector sheet 108 may be adapted to reflect the light generated from the second set of LEDs 704 towards the base plate 104 through the light guiding plate 112.

Referring to Figures 1a, 1b, and 5, the light guiding plate 112 may be disposed between the heat sink plate 110 and the base plate 104. The light guiding plate 112 may be adapted to guide the reflected light from the reflector sheet 108 and the heat sink plate 110, respectively, towards the base plate 104. In an embodiment, the light guiding plate 112 may have a circular shape, without departing from the scope of the present disclosure. In another embodiment, the light guiding plate 112 may have any other shape, without departing from the scope of the present disclosure.

Referring to Figures 1a, 1b, 2b, 3, and 6, the base plate 104 may be detachably attached to the cover member 102. In an embodiment, the base plate 104 may have a spherical shape, without departing from the scope of the present disclosure. In another embodiment, the base plate 104 may have any other shapes, for example, circle, square, pentagon, etc, without departing from the scope of the present disclosure. The base plate 104 may include the first set of LEDs 702 (as shown in Figure 7), an opening 604, an outer plate 606, a protruded portion 608, and a plurality of slots 602. The first set of LEDs 702 may be disposed on an outer surface of the protruded portion 608. Further, the first set of LEDs 702 provided in the base plate 104 may be adapted to reflect light to illuminate the ambient environment.

The base plate 104 may be detachably attached with the cover member 102 through the plurality of slots 602 provided on the protruded portion 608. For instance, the plurality of slots 602 locks with the plurality of locking members 206 of the cover member 102 to form the lighting device 100. The outer plate 606 may be adapted to support the plate 304 of the outer ring member 106. Further, the base plate 104 may be attached to the cover member 102 in such a manner that the outer ring member 106, the reflector sheet 108, the heat sink plate 110, and the light guiding plate 112 may be disposed between the cover member 102 and the base plate 104. Further, the opening 604 receives the light guiding plate 112 of the lighting assembly 100. The light guiding plate 112 may be adapted to guide light reflected from the reflector sheet 108 towards the base plate 104.

The operational details of the lighting device 100 ensuring efficient heat dissipation while providing a plurality of lighting options are elaborated in the subsequent paragraphs in conjunction with Figure 7 of the present disclosure.

Figure 7 illustrates a sectional view of the lighting device 100, according to an embodiment of the present invention.

In an embodiment, the heat sink plate 110 may include the second set of LEDs 704 and the base plate 104 may include the first set of LEDs 702 in the lighting device 100. The second set of LEDs 704 may be installed vertically on an inner edge 110a of the heat sink plate 110. The first set of LEDs 702 may be installed on the outer surface of the protruded portion 608 of the base plate 104. In an embodiment, the inner edge 110a of the heat sink plate 110 may be made up of Aluminium, without departing from the scope of the present disclosure. The second set of LEDs 704 may be attached to a circuit board with various attachment means, for example, soldering. The circuit board may be attached to the heat sink plate 110 through various attachment means, for example, adhesives.

Similarly, the first set of LEDs 702 may be attached to the circuit board with various attachment means, for example, soldering. The circuit board may be attached to the outer surface of the protruded portion 608 through various attachment means, for example, adhesives. In an embodiment, the circuit board may be a flexible type of circuit board. Further, the heat sink plate 110 may be adapted to dissipate heat generated by at least one of the first set of LEDs 702 and the second set of LEDs 704 while reflecting light to illuminate the ambient environment, when the lighting device 100 may be operated in at least one of predetermined switching modes. The at least one of predetermined switching modes indicates one of a first mode, a second mode, and a third mode. In an embodiment, the second mode is operated subsequently after the first mode and the third mode is operated subsequently after the second mode.

For instance, the first mode is operated, when the lighting device 100 operates in an ON state from an OFF state for a first instance. The first instance is described as when a user actuates a switch initially to operate the lighting device 100 in the ON state from the OFF state, without departing from the scope of the present disclosure. In the first mode, a switch may be actuated for the first instance to operate the lighting device 100 in the ON state from the OFF state. The lighting device 100 may be operated such that the second set of LEDs 704 operates to reflect the light towards the base plate 104 from the heat sink plate 110 to illuminate the ambient environment. In the first mode, the second set of LEDs 704 generates the light which travels in an upward direction and gets reflected by the reflector sheet 108 installed on the heat sink plate 110.

The light, as reflected, from the reflector sheet 108 travels downwardly and may be received by the light guiding plate 112. The light guiding plate 112 guides the light towards the base plate 104 and thus illuminates the ambient environment. Further, heat generated by the second set of LEDs 704, during the operation in the first mode, may be dissipated by the heat sink plate 110 and through the plurality of vents 204 of the cover member 102. This configuration provides efficient heat dissipation from the lighting device 100 and ensures efficient light from the lighting device 100 while eliminating the requirement of additional components unlike the conventional lighting devices when the lighting device 100 is operated in the first mode.

Further, the second mode may occur subsequently after the first mode. The second mode is operated when the lighting device 100 operates in the ON state from the OFF state for a second instance. In the second mode, the switch may be actuated for the second instance to operate the lighting device 100 in the ON state from the OFF state for the second instance, where the lighting device 100 may be in the OFF state after operating in the first mode. The lighting device 100 may be operated for the second instance such that the first set of LEDs 702 operates to reflect the light from the base plate 104 to illuminate the ambient environment. In the second mode, the first set of LEDs 702 generates the light which travels from the outer surface of the protruded portion 608 of the base plate 104 towards the outer ring member 106. Further, the outer ring member 106 acts as a diffuser to spread and channel the light downwardly to illuminate the ambient environment.

In an embodiment, the first set of LEDs 702 illuminates the ambient environment in the same manner in which a back-lit-light panel illuminates the ambient environment, without departing from the scope of the present disclosure. Further, heat generated by the first set of LEDs 702, during the operation in the second mode, may be dissipated by the base plate 104, the cover member 102, and the heat sink plate 110. For instance, the heat, as generated, may be dissipated through the base plate 104, the cover member 102, and then through the heat sink plate 110, without departing from the scope of the present disclosure. The remaining heat may be dissipated through the plurality of vents 204 of the cover member 102. This configuration provides efficient heat dissipation from the lighting device 100 and ensures efficient light from the lighting device 100 while eliminating the requirement of additional components when the lighting device 100 is operated in the second mode.

Further, the third mode may occur subsequently after the second mode. The third mode is operated when the lighting device 100 operates in the ON state from the OFF state for a third instance. In the third mode, the switch may be actuated for the third instance to operate the lighting device 100 in the ON state from the OFF state for the third instance, where the lighting device 100 may be in the OFF state after operating in the second mode. The lighting device 100 may be operated in the third mode such that the first set of LEDs 702 and the second set of LEDs 704 operates to reflect the light from the base plate 104 and the heat sink plate 110 to illuminate the ambient environment. In the third mode, the first set of LEDs 702 generates the light which travels from the outer surface of the protruded portion 608 of the base plate 104 towards the outer ring member 106. Further, the outer ring member 106 acts as the diffuser to spread and channel the light downwardly to illuminate the ambient environment. Further, the second set of LEDs 704 generates the light which travels in an upward direction and gets reflected by the reflector sheet 108 installed on the heat sink plate 110. The light, as reflected, from the reflector sheet 108 travels downwardly and may be received by the light guiding plate 112. The light guiding plate 112 guides the light towards the base plate 104 and thus illuminates the ambient environment.

Further, heat generated by the first set of LEDs 702 and the second set of LEDs 704, during the operation in the third mode, may be dissipated by the base plate 104, the cover member 102, and the heat sink plate 110. For instance, the heat, as generated, may be dissipated through the base plate 104, the cover member 102, and then through the heat sink plate 110, without departing from the scope of the present disclosure. The remaining heat may be dissipated through the plurality of vents 204 of the cover member 102. This configuration provides efficient heat dissipation from the lighting device 100 and ensures efficient light from the lighting device 100 while eliminating the requirement of additional components when the lighting device 100 operates in the third mode.

Further, once the third mode may be completed, the lighting device 100 operates in the ON state from the OFF state for a fourth instance. In the fourth instance, the lighting device 100 may be operated in the first mode as explained earlier, without departing from the scope of the present disclosure.

As would be gathered, the present disclosure ensures a simple configuration of the lighting device 100 providing efficient heat dissipation from the lighting device 100 while ensuring an operation of the lighting device 100 in one of the first modes, the second mode, and the third mode. The operation of the lighting device 100 in the first mode, the second mode, and the third mode provides a plurality of lighting options to the user. Further, the present disclosure ensures efficient lighting from the lighting device 100 while eliminating the requirement for additional components. Further, as the present configuration eliminates the requirement of the additional components, this results in the minimization of the light loss in the lighting device 100. Further, the present disclosure ensures efficient heat dissipation from the lighting device 100 and ensures efficient light from the lighting device 100 without the requirement of the additional component, where the lighting device 100 operates in the at least one of predetermined switching modes. Therefore, the configuration as disclosed maintains a life expectancy of the first set of LEDs 702 and the second set of LEDs 704, respectively, and thus maintains the efficiency of the lighting device 100.

While specific language has been used to describe the present subject matter, any limitations arising on account thereto, are not intended. As would be apparent to a person in the art, various working modifications may be made to the method in order to implement the inventive concept as taught herein. The drawings and the foregoing description give examples of embodiments. Those skilled in the art will appreciate that one or more of the described elements may well be combined into a single functional element. Alternatively, certain elements may be split into multiple functional elements. Elements from one embodiment may be added to another embodiment.
,CLAIMS:1. A lighting device (100) comprising:
a cover member (102);
a base plate (104) detachably attached to the cover member (102), the base plate (104) comprises a first set of LEDs (702) to reflect light to illuminate an ambient environment; and
a heat sink plate (110) disposed between the base plate (104) and the cover member (102), the heat sink plate (110) comprises a second set of LEDs (704) to reflect the light towards the base plate (104) to illuminate the ambient environment, wherein:
the heat sink plate (110) is adapted to dissipate heat generated by at least one of the first set of LEDs (702) and the second set of LEDs (704) while reflecting the light to illuminate the ambient environment when the lighting device (100) is operated in at least one of predetermined switching modes.
2. The lighting device (100) as claimed in claim 1, wherein the at least one of predetermined switching modes indicates one of a first mode, a second mode, and a third mode, wherein the second mode is operated subsequently after the first mode and, the third mode is operated subsequently after the second mode.

3. The lighting device (100) as claimed in claim 2, wherein the first mode is operated when the lighting device (100) operated in an ON state from an OFF state for a first instance such that the second set of LEDs (704) operates to reflect the light towards the base plate (104) from the heat sink plate (110) to illuminate the ambient environment.

4. The lighting device (100) as claimed in claim 3, wherein the heat sink plate (110) is adapted to dissipate heat generated during the operation of the second set of LEDs (704) in the first mode.

5. The lighting device (100) as claimed in claim 2, wherein the second mode is operated when the lighting device (100) operated in the ON state from the OFF state for a second instance such that the first set of LEDs (702) operates to reflect the light from the base plate (104) to illuminate the ambient environment.

6. The lighting device (100) as claimed in claim 5, wherein the base plate (104), the cover member (102), and the heat sink plate (110) are adapted to dissipate heat generated during the operation of the first set of LEDs (702) in the second mode.

7. The lighting device (100) as claimed in claim 2, wherein the third mode is operated when the lighting device (100) operated in the ON state from the OFF state for a third instance such that the first set of LEDs (702) and the second set of LEDs (704) operates to reflect the light from the base plate (104) the heat sink plate (110)to illuminate the ambient environment.

8. The lighting device (100) as claimed in claim 7, wherein the base plate (104), the cover member (102), and the heat sink plate (110) are adapted to dissipate heat generated during the operation of the first set of LEDs (702) and the second set of LEDs (704) in the third mode.

9. The lighting device (100) as claimed in claim 1, comprising a reflector sheet (108) installed on the heat sink plate (110) to reflect the light generated from the second set of LEDs (704) towards the base plate (104).

10. The lighting device (100) as claimed in claim 9, comprising a light guiding plate (112) guides the reflected light reflected from the reflector sheet (108) and the heat sink plate (110) towards the base plate (104).

11. The lighting device (100) as claimed in claim 1, wherein the second set of LEDs (704) is disposed vertically along an inner edge (110a) of the heat sink plate (110), where the inner edge (110a) of the heat sink plate (110) is made up of Aluminum.

12. The lighting device (100) as claimed in claim 1, wherein the base plate (104) is adapted to be detachably attached to the cover member (102) in a manner that a reflector sheet (108) and a light guiding plate (112) are disposed between the base plate (104) and the cover member (102).

13. The lighting device (100) as claimed in claim 12, wherein the cover member (102) comprises a plurality of vents (204) to channel heat dissipated from the lighting device (100) to the environment.

14. The lighting device (100) as claimed in claim 1, comprising an outer ring member (106) adapted to be disposed between the base plate (104) and the cover member (102).