DESC:FIELD OF THE INVENTION

The present disclosure relates to lighting apparatuses and more particularly, relates to a lighting apparatus operable in different lighting modes.

BACKGROUND

With the advancement in technology, various lighting apparatuses are employed with provisions to optimally illuminate an area in different modes based on ambience required in such area. Such lighting apparatuses are capable of emitting light in different directions in order to illuminate the area to create an ambience in such area. For instance, in one mode, a lighting apparatus directly emits the light in a downward direction to illuminate the area. The aforesaid mode of illumination is usually suitable for performing tasks, such as reading, writing, working, etc. in such area. In another mode, the lighting apparatus indirectly illuminates the area resulting from reflection of light from various surfaces, such as a roof. The aforesaid mode of illumination usually generates illumination light with lesser intensity compared to the other mode of illumination.

Generally, such lighting apparatus includes a light diffuser and a plurality of Light Emitting Diodes (LEDs) adapted to emit light. The light diffuser includes a single incident surface adapted to scatter the light emitted from the LEDs in the area. In such a lighting apparatus, an optical axis of the each of the LEDs is directed towards the single incident surface of the light diffuser. In order to operate the lighting apparatus in different lighting modes, different sets of LEDs from the among the plurality of LEDs are operated to emit light on the single incident surface of the light diffuser. For instance, in a downward lighting mode, a first set of LEDs is operated to emit light on the single incident surface of the light diffuser. Similarly, in an upward lighting mode, a second set of LEDs is operated to emit light on the single incident surface of the light diffuser. Owing to such an arrangement, when the light is scattered in different directions, such as the downward direction and the upward direction, uneven brightness is noticeable corresponding to optical axes of the LEDs. This substantially reduces the overall illumination of the area and also reduces the overall aesthetic appeal of the lighting apparatus. Further, the lighting apparatus includes a large number of sub-components which substantially increases time consumption while assembling or disassembling the lighting apparatus to replace or repair one of the sub-components. This also results in a substantial increase in the overall weight of the lighting apparatus.

Therefore, there is a need for a multi-mode lighting apparatus to substantially eliminate uneven brightness when operated in different lighting modes.

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.

In an embodiment of the present disclosure, a multi-mode lighting apparatus is disclosed. The multi-mode lighting apparatus includes a pair of light sources adapted to emit light. One of the pair of light sources is operated in a first lighting mode and another light source from among the pair of light sources is operated in a second lighting mode. Further, the multi-mode lighting apparatus includes a pair of support surfaces adapted to support the pair of light sources. The pair of support surfaces is inclined at an angle with respect to each other. The multi-mode lighting apparatus includes a light diffuser adapted to enclose the pair of support surfaces and the pair of light sources. The light diffuser includes a plurality of incident surfaces inclined at different angles with respect to each other. A plurality of edges is defined at intersections of the plurality of incident surfaces.

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:

Figures 1a and 1b illustrate isometric views of a lighting apparatus operated in different lighting modes, according to an embodiment of the present disclosure;

Figure 2 illustrates a partial isometric view of the lighting apparatus, according to an embodiment of the present disclosure;

Figure 3 illustrates a side view of the lighting apparatus, according to an embodiment of the present disclosure;

Figures 4a and 4b illustrate an operation of the lighting apparatus in different lighting modes, according to an embodiment of the present disclosure;

Figures 5a and 5b illustrate a side view of a mounting clamp of the lighting apparatus, according to an embodiment of the present disclosure; and

Figures 6a 6b, and 6c illustrate different views of an end cap of the lighting apparatus, according to an embodiment of the present disclosure.

Further, skilled artisans will appreciate that elements in the drawings are illustrated for simplicity and may not have been necessarily been drawn to scale. For example, the flow charts illustrate the method in terms of the most prominent steps involved to help to improve understanding of aspects of the present invention. Furthermore, in terms of the construction of the device, one or more 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 this invention belongs. The system, methods, and examples provided herein are illustrative only and not intended to be limiting.

The term “some” as used herein is defined as “none, or one, or more than one, or all.” Accordingly, the terms “none,” “one,” “more than one,” “more than one, but not all” or “all” would all fall under the definition of “some.” The term “some embodiments” may refer to no embodiments or to one embodiment or to several embodiments or to all embodiments. Accordingly, the term “some embodiments” is defined as meaning “no embodiment, or one embodiment, or more than one embodiment, or all embodiments.”

The terminology and structure employed herein is for describing, teaching and illuminating some embodiments and their specific features and elements and does not limit, restrict or reduce the spirit and scope of the claims or their equivalents.

More specifically, any terms used herein such as but not limited to “includes,” “comprises,” “has,” “consists,” and grammatical variants thereof do NOT specify an exact limitation or restriction and certainly do NOT exclude the possible addition of one or more features or elements, unless otherwise stated, and furthermore must NOT be taken to exclude the possible removal of one or more of the listed features and elements, unless otherwise stated with the limiting language “MUST comprise” or “NEEDS TO include.”

Whether or not a certain feature or element was limited to being used only once, either way, it may still be referred to as “one or more features” or “one or more elements” or “at least one feature” or “at least one element.” Furthermore, the use of the terms “one or more” or “at least one” feature or element do NOT preclude there being none of that feature or element, unless otherwise specified by limiting language such as “there NEEDS to be one or more . . . ” or “one or more element 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 one having ordinary skills 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 presented in the attached claims. Some embodiments have been described for the purpose of illuminating one or more of the potential ways in which the specific features and/or elements of the attached claims fulfil the requirements of uniqueness, utility and non-obviousness.

Use of the phrases and/or terms such as 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 variants thereof do NOT necessarily refer to the same embodiments. Unless otherwise specified, one or more particular features and/or elements described in connection with one or more 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 one or more features and/or elements may be described herein in the context of only a single embodiment, or alternatively in the context of more than one embodiment, or further alternatively 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 be necessarily taken as limiting factors to the attached claims. The attached claims and their legal equivalents can be realized in the context of embodiments other than the ones used as illustrative examples in the description below.

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

Figures 1a and 1b illustrate isometric views of a lighting apparatus 100 operated in different lighting modes, according to an embodiment of the present disclosure. In an embodiment, the lighting apparatus 100 may be embodied as a lighting batten, without departing from the scope of the present disclosure. The lighting apparatus 100 may be adapted to be positioned in different orientations to illuminate an area in the vicinity of the lighting apparatus 100. In one example, the lighting apparatus 100 may be positioned on a vertical surface, such as a wall. In another example, the lighting apparatus 100 may be positioned on a horizontal surface, such as a roof. In an embodiment, the lighting apparatus 100 may be adapted to be operated in different lighting modes to illuminate the area in the vicinity of the lighting apparatus 100. For instance, the lighting apparatus 100 may be adapted to be operated in a first lighting mode and a second lighting mode, without departing from the scope of the present disclosure.

Referring to Figure 1a, in the first lighting mode, the lighting apparatus 100 may be adapted to scatter the light in an upward direction to illuminate the area in the vicinity of the lighting apparatus. In the first lighting mode, the lighting apparatus 100 may emit illumination light in the upward direction with respect to the surface, such wall, on which the lighting apparatus 100 is supported. Further, referring to Figure 1b, in the second lighting mode, the lighting apparatus 100 may be adapted to scatter the light in a downward direction with respect to the surface on which the lighting apparatus 100 is supported. The lighting apparatus 100 may be adapted to scatter the light with even brightness in both the first lighting mode and the second lighting mode. Constructional and operational aspects of the lighting apparatus 100 are explained in subsequent sections of the present disclosure.

Figure 2 illustrates a partial isometric view of the lighting apparatus, according to an embodiment of the present disclosure. Figure 3 illustrates a side view of the lighting apparatus, according to an embodiment of the present disclosure. Referring to Figure 2 and Figure 3, the lighting apparatus 100 may include, but is not limited to, at least a pair of light sources 202, at least a pair of support surfaces 204, a light diffuser 206, a mounting clamp 208, a clamping surface 209, a channel 211, and a pair of end caps 602 (shown in Figure 6). In an embodiment, at least the pair of light sources 202 and at least the pair of support surfaces 204 may interchangeably be referred to as the pair of light sources 202 and the pair of support surfaces 204, without departing from the scope of the present disclosure.

In the illustrated embodiment, the pair of light sources may be adapted to emit light. The pair of light sources 202 may individually be referred to as the first light source 202-1 and the second light source 202-2. The first light source 202-1 may be adapted to be operated in the first lighting mode. Similarly, the second light source 202-2 may be adapted to be operated in the second lighting mode. Each of the first light source 202-1 and the second light source 202-2 may include, but is not limited to, a plurality of Light Emitting Diodes (LEDs), without departing from the scope of the present disclosure.

Further, referring to Figure 2 and Figure 3, the pair of support surfaces 204 may be adapted to support the pair of light sources 202. The pair of support surfaces 204 may be inclined at an angle ?1 with respect to each other. In the illustrated embodiment, the pair of support surfaces 204 may include, but is not limited to, a first support surface 204-1 and a second support surface 204-2. The first support surface 204-1 may be adapted to support the first light source 202-1. Similarly, the second support surface 204-2 may be adapted to support the second light source 202-2.

The first support surface 204-1 may be facing in a direction away from the second support surface 204-2. Each of the first support surface 204-1 and the second surface 204-2 may be inclined in a downward direction about a central axis X-X’ of the lighting apparatus 100. The angle ?1 defined between the pair of support surfaces 204 may be an obtuse angle, without departing from the scope of the present disclosure. The first support surface 204-1 may include a first slot 210-1 adapted to hold a first substrate 302-1 (as shown in Figure 3) having the first light source 202-1. Further, the second support surface 204-2 may include a second slot 210-2 adapted to hold a second substrate 302-2 having the second light source 202-2.

In the illustrated embodiment, the first slot 210-1 and the second slot 210-2 may extend along a length ‘L’ of the lighting apparatus 100 on the first support surface 204-1 and the second support surface 204-2. The plurality of LEDs of the first light source 202-1 may be distributed on the first substrate 302-1 along the length ‘L’ of the lighting apparatus 100. Similarly, the plurality of LEDs of the second light source 202-2 may be distributed on the second substrate 302-2 along the length ‘L’ of the lighting apparatus 100.

Further, as mentioned earlier, the lighting apparatus 100 may include the light diffuser 206 disposed above the pair of support surfaces 204. In an embodiment, the light diffuser 206 may be adapted to scatter light emitted from the pair of light sources 202. The light diffuser 206 may be adapted to enclose the pair of support surfaces 204 and the pair of light sources 202. The light diffuser 206 may include, but is not limited to, a plurality of incident surfaces 212 inclined at different angles with respect to each other. Further, a plurality of edges 214 may be defined at intersections of the plurality of incident surfaces 212.

In the illustrated embodiment, referring to Figure 2 and Figure 3, the plurality of incident surfaces 212 includes an upward incident surface 212-1, an intermediate incident surface 212-2 adjacent to the upward incident surface 212-1, and a downward incident surface 212-3 adjacent to the intermediate incident surface 212-2. Although, in the present embodiment, the light diffuser 206 of the lighting apparatus 100 may include three incident surfaces 212-1, 212-2, and 212-3. However, it should be appreciated by a person skilled in the art that it should not be construed as limiting, and the light diffuser 206 may include more than three incident surfaces, without departing from the scope of the present disclosure.

Further, in the illustrated embodiment, the plurality of edges 214 may include a first edge 214-1 and a second edge 214-2. The first edge 214-1 may be defined at the intersection of the upward incident surface 212-1 and the intermediate incident surface 212-2. The second edge 214-2 may be defined at the intersection of the downward incident surface 212-3 and the intermediate incident surface 212-2. The first edge 214-1 may be defined above the first light source 202-1 supported on the first support surface 204-1. The second edge 214-2 may be defined above the second light source 202-2 supported on the second support surface 204-2.

In the illustrated embodiment, the upward incident surface 212-1 and the intermediate incident surface 212-2 are inclined at an angle ?2 with respect to each other in a manner that the first edge 214-1 is directed in a direction away from the first light source 202-1 supported on the first support surface 204-1. Further, the downward incident surface 212-3 and the intermediate incident surface 212-2 are inclined at an angle ?3 with respect to each other in a manner that the second edge 214-2 is directed in a direction away from the second light source 202-2 supported on the second support surface 204-2. In an embodiment, the angle ?2 defined between the upward incident surface 212-1 and the intermediate surface 212-2 may be equal to the angle ?3 defined between the downward incident surface 212-3 and the intermediate surface 212-2.

Figures 4a and 4b illustrate an operation of the lighting apparatus 100 in different lighting modes, according to an embodiment of the present disclosure. In the illustrated embodiments, referring to Figure 4a and Figure 4b, the lighting apparatus 100 may be mounted on a vertical surface 402, such as a wall, to illuminate the area in the vicinity of the lighting apparatus 100. Referring to Figure 1a, Figure 2, and Figure 4a, during an operation of the lighting apparatus 100 in the first lighting mode, the first light source 202-1 supported on the first support surface 204-1 may be adapted to project light on the upward incident surface 212-1, the intermediate incident surface 212-2, and the first edge 214-1. Thereby, the light emitted by the first light source 202-1 may be uniformly scattered by the upward incident surface 212-1, the intermediate incident surface 212-2, and the first edge 214-1 of the light diffuser 206 to illuminate the area in the vicinity of the lighting apparatus 100.

Further, referring to Figure 1b, Figure 2, and Figure 4b, during the operation of the lighting apparatus 100 in the second lighting mode, the second light source 202-2 supported on the second support surface 204-2 may be adapted to project light on the downward incident surface 212-3, the intermediate incident surface 212-2, and the second edge 214-2. Thereby, the light emitted by the second light source 202-2 may be uniformly scattered by the downward incident surface 212-3, the intermediate incident surface 212-2, and the second edge 214-2 of the light diffuser 206 to illuminate the area in the vicinity of the lighting apparatus 100.

Figures 5a and 5b illustrate a side view of the mounting clamp 208 of the lighting apparatus 100, according to an embodiment of the present disclosure. Referring to Figure 4a, Figure 4b, Figure 5a, and Figure 5b, in the illustrated embodiment, the lighting apparatus 100 may include the clamping surface 209 adapted to be engaged with the mounting clamp 208. In particular, the clamping surface 209 may be provided below the pair of support surfaces 204 and, may be held by the mounting clamp 208. Further, the channel 211 may be defined between the clamping surface 209 and the support surfaces 204 of the lighting apparatus 100. The channel 211 may be adapted to support a LED driver (not shown) in communication with the first light source 202-1 and the second light source 202-2.

The clamping surface 209 of the lighting apparatus 100 may have a contour similar to the mounting clamp 208. The mounting clamp 208 may be adapted to mount the multi-mode lighting apparatus 100 on the surface, such as a wall. The mounting clamp 208 may include, but is not limited to, a first clamping surface 208-1, a second clamping surface 208-2, and a third clamping surface 208-3. The first clamping surface 208-1 may be inclined at an obtuse angle ?4 with respect to the third clamping surface 208-3. Similarly, the second clamping surface 208-2 may be inclined at an obtuse angle ?5 with respect to the third clamping surface 208-3. The obtuse angle ?4 defined between the first clamping surface 208-1 and the third clamping surface 208-3 may be equal to the obtuse angle ?5 defined between the second clamping surface 208-2 and the third clamping surface 208-3. The third clamping surface 208-3 of the mounting clamp 208 may be adapted to coincide with the surface on which the lighting apparatus 100 is mounted.

The clamping surface 209 and the light diffuser 206 may collectively define a polygonal tubular housing adapted to accommodate various sub-components, such as the light source and the substrates, of the lighting apparatus 100. The light diffuser 206 defines a front side of the polygonal tubular housing and the clamping surface 209 defines a rear side of the polygonal tubular housing. In the illustrated embodiment, the polygonal tubular housing may be embodied as a hexagonal tubular housing, without departing from the scope of the present disclosure. However, it should be appreciated by a person skilled in the art that it should not be construed as limiting, and the polygonal tubular housing may have different polygonal shapes, without departing from the scope of the present disclosure. In an embodiment, a number of incident surfaces of the light diffuser 206 can be varied corresponding to a number of support surface supporting a plurality of light sources. In such an embodiment, a shape of the polygonal tubular housing may depend on the number of incident surfaces of the light diffuser 206 of the lighting apparatus 100.

Figures 6a 6b, and 6c illustrate different views of an end cap of the lighting apparatus, according to an embodiment of the present disclosure. Referring to Figures 6a, Figure 6b, and Figure 6c, in the illustrated embodiment, the lighting apparatus 100 may include the pair of end caps 602 adapted to be connected to a first end 100-1 and a second end 100-2 of the lighting apparatus 100. The pair of end caps 602 may be adapted to restrict ingress of any contaminates within the lighting apparatus 100, and thereby protecting various sub-components of the lighting apparatus 100 from such contaminants.

The pair of end caps 602 may include a first end cap adapted to be connected to the first end 100-1 and a second end cap adapted to be connected to the second end 100-2. Each of the pair of end caps 602 may be removably connected to one of the first end 100-1 and the second end 100-2 of the lighting apparatus 100. In the illustrated embodiment, each of the pair of end caps 602 may include a pair of wedge-shaped protrusions 604 adapted to hold the pair of end caps 602 at both ends of the lighting apparatus. The first end cap and the second end cap may be held in position at the first end 100-1 and the second end 100-2, respectively, via the pair of wedge-shaped protrusions 604. The pair of wedge-shaped protrusions 604 may be adapted to engage with the first support surface 204-1 and the second support surface 204-2. In particular, when the pair of end caps 602 are mounted on the first end 100-1 and the second 100-2 of the lighting apparatus 100, then the pair of wedge-shaped protrusions 604 engages with the support surfaces 204 and thereby, holds each of the pair of end caps 602 on the lighting apparatus 100.

As would be gathered, the present disclosure offers the lighting apparatus 100 adapted to be operated in different lighting modes. As mentioned earlier, the lighting apparatus 100 includes the pair of support surfaces 204 adapted to support the pair of light sources 202. The pair of support surfaces 204 may be included at the angle ?1 with respect to each other to provide optimal illumination from the pair of light sources 202 in different directions. Further, the lighting apparatus 100 may include the light diffuser 206 having the plurality of incident surfaces 212 inclined at different angles with respect to each other and the plurality of edges 214 defined at intersections of the plurality of incident surfaces. The pair of support surfaces 204 may be disposed below the plurality of incident surfaces 212. The first light source 202-1 may be disposed on the first support surface 204-1 in a manner that an optical axis of each of the plurality of LEDs of the first light source 202-1 may intersect with the first edge 214-1 of the light diffuser 206. Similarly, the second light source 202-2 may be disposed on the second support surface 204-2 in a manner that an optical axis of each of the plurality of LEDs of the second light source 202-2 may intersect with the second edge 214-2 of the light diffuser 206.

Owing to such an arrangement of the pair of light sources 202 with respect to the light diffuser 206, a problem associated with uneven brightness is substantially eliminated during operation of the lighting apparatus 100 in different lighting modes. For instance, in the first lighting mode, the first light source 202-1 disposed on the first support surface 204-1 may be operated to emit light on the first edge 214-1, the upward incident surface 212-1, and the intermediate incident surface 212-2. Therefore, the light may be optimally scattered by the first edge 214-1, the upward incident surface 212-1, and the intermediate incident surface 212-2 in an upward direction with respect to the surface 402 on which the light apparatus 100 is mounted. Further, in the second lighting mode, the second light source 202-2 disposed on the second support surface 204-2 may be operated to emit light on the second edge 214-2, the downward incident surface 212-3, and the intermediate incident surface 212-2. Therefore, the light may be optimally scattered by the second edge 214-2, the downward incident surface 212-3, and the intermediate incident surface 212-2 in a downward direction with respect to the surface 402 on which the light apparatus 100 is mounted. Further, owing to such structure of the light diffuser 206, overall aesthetic appeal of the light apparatus 100 is substantially enhanced. Therefore, the lighting apparatus 100 of the present disclosure is flexible in implementation, compact, efficient, cost-effective, aesthetically appealing, and convenient.

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 multi-mode lighting apparatus (100) comprising:
at least a pair of light sources (202-1, 202-2) adapted to emit light, wherein one of the pair of light sources (202-1, 202-2) is operated in a first lighting mode and another light source from among the pair of light sources (202-1, 202-2) is operated in a second lighting mode;
a pair of support surfaces (204) adapted to support the pair of light sources (202-1, 202-2), wherein the pair of support surfaces (204) is inclined at an angle (?1) with respect to each other; and
a light diffuser (206) adapted to enclose the pair of support surfaces (204) and the pair of light sources (202-1, 202-2), the light diffuser (206) comprising:
a plurality of incident surfaces (212) inclined at different angles with respect to each other, wherein a plurality of edges (214) is defined at intersections of the plurality of incident surfaces (212).

2. The multi-mode lighting apparatus (100) as claimed in claim 1, wherein the pair of support surfaces (204) comprises a first support surface (204-1) adapted to support a first light source (202-1) from among the pair of light sources (202-1, 202-2) and a second support surface (204-2) adapted to support a second light source (202-2) from among the plurality of light sources (202).

3. The multi-mode lighting apparatus (100) as claimed in claim 2, wherein the first support surface (204-1) is facing in a direction away from the second support surface (204-2), the angle defined between the pair of support surfaces (204) is an obtuse angle.

4. The multi-mode lighting apparatus (100) as claimed in claim 2, wherein the first support surface (204-1) includes a first slot (210-1) adapted to hold a first substrate (302-1) having the first light source (202-1) and the second support surface (204-2) includes a second slot (210-2) adapted to hold a second substrate (302-2) having the second light source (202-2).

5. The multi-mode lighting apparatus (100) as claimed in claim 1, wherein the plurality of incident surfaces (212) includes an upward incident surface (212-1), an intermediate incident surface (212-2) adjacent to the upward incident surface (212-1), and a downward incident surface (212-3) adjacent to the intermediate incident surface (212-2).

6. The multi-mode lighting apparatus (100) as claimed in claim 5, wherein the plurality of edges (214) comprises:
a first edge (214-1) defined at the intersection of the upward incident surface (212-1) and the intermediate incident surface (212-2); and
a second edge (214-2) defined at the intersection of the downward incident surface (212-3) and the intermediate incident surface (212-2).

7. The multi-mode lighting apparatus (100) as claimed in one of claims 2 and 6, wherein the first edge (214-1) is defined above the first light source (202-1) supported on the first support surface (204-1) and the second edge (214-2) is defined above the second of light source (202-2) supported on the second support surface (204-2).

8. The multi-mode lighting apparatus (100) as claimed in claim 7, wherein an optical axis of the first light source (202-1) is directed to the first edge (214-1) and an optical axis of the second light source (202-2) is directed to the second edge (214-2).

9. The multi-mode lighting apparatus (100) as claimed in claim 7, wherein the upward incident surface (212-1) and the intermediate incident surface (212-2) are inclined at an angle (?2) with respect to each other in a manner that the first edge (214-1) is directed in a direction away from the first light source (202-1) supported on the first support surface (204-1).

10. The multi-mode lighting apparatus (100) as claimed in claim 7, the downward incident surface (212-3) and the intermediate incident surface (212-2) are inclined at an angle (?3) with respect to each other in a manner that the second edge (214-1) is directed in a direction away from the second light source (202-2) supported on the second support surface (204-2).

11. The multi-mode lighting apparatus (100) as claimed in any of claims 8 and 9, wherein the angle (?2) defined between the upward incident surface (212-1) and the intermediate incident surface (212-2) is equal to the angle (?3) defined between the downward incident surface (212-3) and the intermediate incident surface (212-2).

12. The multi-mode lighting apparatus (100) as claimed in claim 7, wherein:
in the first lighting mode, the first light source (202-1) supported on the first support surface (204-1) is adapted to project light on the upward incident surface (212-1), the intermediate incident surface (212-2), and the first edge (214-1); and
in the second lighting mode, the second light source (202-2) supported on the second support surface (204-2) is adapted to project light on the downward incident surface (212-3), the intermediate incident surface (212-2), and the second edge (214-2).

13. The multi-mode lighting apparatus (100) as claimed in claim 1 further comprising a clamping surface (209) held by a mounting clamp (208) disposed below the pair of support surfaces (204) and adapted to mount the multi-mode lighting apparatus (100) on a surface (402), wherein the clamping surface (209) and the light diffuser (206) collectively defines one of a polygonal tubular housing.

14. The multi-mode lighting apparatus (100) as claimed in claim 13, wherein the light diffuser (206) defines a front side of the polygonal tubular housing, and the clamping surface(209) defines a rear side of the polygonal tubular housing.

15. The multi-mode lighting apparatus (100) as claimed in claim 13 further comprising a channel (211) defined between the clamping surface (209) and the pair of support surfaces (204), wherein the channel (211) is adapted to support a LED driver in communication with the pair of light sources (202-1, 202-2).