DESC:FIELD OF THE INVENTION

The present disclosure relates to lighting apparatuses and more particularly, relates to an improved lighting apparatus for light guiding panels.

BACKGROUND

Generally, light guiding panels are deployed in lighting fixtures to spread, and direct light beams emitted from a plurality of light sources. In such lighting fixtures, various provisions are implemented to attach a light guiding panel to a sub-component of the lighting fixture. The light guiding panels can be manufactured with different shapes, sizes, and illumination patterns. Such light guiding panels can be implemented by a user based on functional or aesthetical requirements. Therefore, it is essential that the lighting fixture should be designed to support light guiding panels with different constructional and aesthetical characteristics.

However, existing light fixtures usually includes of complex mounting structures for supporting the light guiding panel. This results in a difficult and cumbersome assembling or disassembling process for the light guiding panel. Further, existing light guiding fixtures are designed only to support a light guiding panel having a specific constructional aspect, such as shape and size. Therefore, structural alterations in at least one sub-component of the lighting fixture might be needed to be implemented in order to replace such light guiding panel with a different light guiding panel. This substantially increases the overall manufacturing cost of the lighting fixture. Also, this renders the implementation of the lighting fixture as a universal fixture for mounting different light guiding panels with ease.

Therefore, there is a need for an improved lighting apparatus that is capable of supporting different light guiding panels.

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, an improved lighting apparatus is disclosed. The improved lighting apparatus includes a light substrate adapted to support a plurality of light sources to emit light beams. Further, the improved lighting apparatus comprises at least one light guiding panel positioned on the light substrate and adapted to receive light beams emitted from the plurality of light sources. The improved lighting apparatus includes a housing member adapted to encapsulate the light substrate and removably hold the at least one light guiding panel. The housing member defines a longitudinal gap adapted to removably receive a portion of the at least one light guiding panel. Further, the improved lighting apparatus includes a plurality of end caps adapted to be coupled to ends of the housing member and to hold the portion of the at least one light guiding panel disposed within the longitudinal gap of the housing member.

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 isometric view of an improved lighting apparatus, according to an embodiment of the present disclosure;

Figures 1b and 1c illustrate different planar views of the improved lighting apparatus, according to an embodiment of the present disclosure;

Figure 2 illustrates an exploded view of the improved lighting apparatus, according to an embodiment of the present disclosure;

Figure 3 illustrates a sectional view of the improved lighting apparatus taken along an axis A-A’ of Figure 1c, according to an embodiment of the present disclosure;

Figure 4 illustrates a planar view of a housing member of the improved lighting apparatus, according to an embodiment of the present disclosure;

Figures 5a and 5b illustrate different planar views of an elastic member of the lighting apparatus, according to an embodiment of the present disclosure;

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

Figures 7a, 7b, 7c, and 7d illustrate isometric views of the lighting apparatus with different light guiding panels, 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.

Figure 1a illustrates an isometric view of an improved lighting apparatus, according to an embodiment of the present disclosure. Figures 1b and 1c illustrate different planar views of the improved lighting apparatus, according to an embodiment of the present disclosure. The improved lighting apparatus 100 may interchangeably be referred to as the lighting apparatus 100. In an embodiment, the lighting apparatus 100 may be embodied as a lighting structure adapted to hold Light Guiding Panels (LGPs), 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. Constructional and operational aspects of the lighting apparatus 100 are explained in subsequent sections of the present disclosure.

Figure 2 illustrates an exploded view of the lighting apparatus 100, according to an embodiment of the present disclosure. In an embodiment, the lighting apparatus 100 may include, but is not limited to, a light substrate 202, at least one light guiding panel 204, a housing member 206, and a plurality of end caps 208. The light substrate 202 may be adapted to support a plurality of light sources 210 to emit light beams. The plurality of light sources 210 may be embodied as Light Emitting Diodes (LEDs), without departing from the scope of the present disclosure. In an embodiment, each of the plurality of light sources 210 may be adapted to emit light beams of different colours. Further, the light substrate 202 may have a Driver on Board (DOB) module. In the illustrated embodiment, the plurality of light sources 210 may be distributed on the light substrate 202 along a length ‘L’ of the housing member 206.

Figure 3 illustrates a sectional view of the improved lighting apparatus taken along an axis A-A’ of Figure 1c, according to an embodiment of the present disclosure. Figure 4 illustrates a planar view of a housing member of the improved lighting apparatus, according to an embodiment of the present disclosure. Referring to Figure 2, Figure 3, and Figure 4, in the illustrated embodiment, the housing member 206 may be adapted to encapsulate the light substrate 202 and the plurality of light sources 210 supported on the light substrate 202. Further, the housing member 206 may be adapted to removably hold the at least one light guiding panel 204.

In an embodiment, the housing member 206 may be embodied as a polygonal tubular housing, without departing from the scope of the present disclosure. Referring to Figure 3 and Figure 4, the housing member 206 may include, but is not limited to, a supporting wall 302, a first engaging wall 304, and a second engaging wall 306. In an embodiment, the supporting wall 302, the first engaging wall 304, and the second engaging wall 306 may collectively define a channel 308 adapted to hold the light substrate 202 and the at least one light guiding panel 204. The supporting wall 302 may be adapted to support the light substrate 202 within the housing member 206. In an embodiment, the light substrate 202 may be oriented in a direction parallel to the supporting wall 302 and slidably positioned on an inner surface of the supporting wall 302.

Further, the first engaging wall 304 may be aligned at an acute angle ?1 with respect to the supporting wall 302. The second engaging wall 306 may be disposed opposite to the first engaging wall 304 and aligned at an acute angle ?2 with respect to the supporting wall 302. In the illustrated embodiment, the first engaging wall 304 and the second engaging wall 306 may be aligned with respect to the supporting wall 302 in a manner that the housing member 206 may be embodied as a triangular tubular housing. In such an embodiment, the acute angle ?1 between the supporting wall 302 and the first engaging wall 304 may be similar to the acute angle ?2 between the supporting wall 302 and the second engaging wall 306.

The housing member 206 may define a longitudinal gap 310 adapted to removably receive a portion 204-1 of the at least one light guiding panel 204. In an embodiment, the longitudinal gap 310 may be defined between the first engaging wall 304 and the second engaging wall 306 to removably receive the portion 204-1 of the at least one light guiding panel 204. The first engaging wall 304 and the second engaging wall 306 may be adapted to be resiliently pushed together to vary the longitudinal gap 310 and to hold the at least one light guiding panel 204. In an embodiment, the longitudinal gap 310 may be greater than a thickness ‘T’ of the at least one light guiding panel 204.

In an embodiment, the first engaging wall 304 and the second engaging wall 306 may include a first engaging portion 312 and a second engaging portion 314, respectively. The longitudinal gap 310 may be defined between the first engaging portion 312 and the second engaging portion 314. Each of the first engaging portion 312 and the second engaging portion 314 may include a cavity 316 defined along the length ‘L’ of the housing member 206. In the illustrated embodiment, the cavity 316 formed on the first engaging portion 312 may interchangeably be referred to as the cavity 316-1. Similarly, the cavity 316 formed on the second engaging portion 312 may interchangeably be referred to as the cavity 316-2.

Referring to Figure 4, each of the first engaging portion 312 and the second engaging portion 314 may include a first protruded member 402 and a second protruded member 404. The cavity 316 may be defined between the first protruded member 402 and the second protruded member 404. In the illustrated embodiment, the cavity 316-1 may be defined between the first protruded member 402 and the second protruded member 404 of the first engaging portion 312. Similarly, in the illustrated embodiment, the cavity 316-2 may be defined between the first protruded member 402 and the second protruded member 404 of the second engaging portion 314.

Each of the first engaging wall 304 and the second engaging wall 306 may include, but is not limited to, an inner surface 406 and an outer surface 408. The inner surface 406 may be provided with a substrate holder 410 adapted to push edges of the light substrate 202 towards the supporting wall 302. The substrate holders 410 may include a pair of projections 410-1, 410-2 formed on inner surfaces of the first engaging wall 304 and the second engaging wall 306. The light substrate 202 may be adapted to be slidably positioned within a space defined between the pair of projections 410-1, 410-2 and the supporting wall 302 of the housing member 206.

As explained earlier, the housing member 206 may define the longitudinal gap 310 adapted to removably receive the portion 204-1 of the at least one light guiding panel 204. The at least one light guiding panel 204 may be positioned on the light substrate 202 and adapted to receive light beams emitted from the plurality of light sources 210. The at least one light guiding panel 204 may be adapted to be vertically oriented with respect to the light substrate 202. At least one edge of the at least one light guiding panel 204 may be aligned with the plurality of light sources 210 disposed on the light substrate 202.

In the illustrated embodiment, the portion 204-1 of the at least one light guiding panel 204 may be inserted within the channel 308 of the housing member 206 through the longitudinal gap 310 in a manner that the portion 204-1 may be orthogonally aligned with respect to the plurality of light sources 210 of the light substrate 202. In an embodiment, the at least one light guiding panel 204 may have a predefined printed pattern that is illuminated by the light beams emitted from the plurality of light sources 210. In an embodiment, the at least one light guiding panel 204 may have coloured surfaces adapted to be illuminated by the light beams from the plurality of light sources 210.

Figures 5a and 5b illustrate different planar views of an elastic member of the lighting apparatus 100, according to an embodiment of the present disclosure. Referring to Figure 2, Figure 3, and Figures 5a-5b, the lighting apparatus 100 may include, but is not limited to, a first elastic member 212-1 and a second elastic member 212-2 adapted to be positioned in the housing member 206 and abut the portion 204-1 of the light guiding panel 204 positioned in the housing member 206. Constructional details of the first elastic member 212-1 may be similar to the constructional details of the second elastic member 212-2.

The first elastic member 212-1 may be removably positioned in the cavity 316-1 of the first engaging portion 312. The second elastic member 212-2 may be removably positioned in the cavity 316-2 of the second engaging portion 314. Referring to Figure 5, in the illustrated embodiment, each of the first elastic member 212-1 and the second elastic member 212-2 may include, but is not limited to, a first portion 502 and a second portion 504. The first portion 502 may be adapted to be positioned in one of the cavities 316-1, 316-2. The second portion 504 may extend from the first portion 502 and adapted to abut the portion 204-1 of the light guiding panel 204. The second portion may be adapted to deform to hold the portion 204-1 of the light guiding panel 204 when the first engaging wall 304 and the second engaging wall 306 may be resiliently pushed in a direction towards each other. The first portion 502 and the second portion 504 may have a flat contour and a convex contour, without departing from the scope of the present disclosure.

Figures 6a, 6b, and 6c illustrate different planar views of an end cap of the lighting apparatus 100, according to an embodiment of the present disclosure. Referring to Figure 2, Figure 3, and Figures 6a-6c, the plurality of end caps 208 may be adapted to be coupled to ends 206-1, 206-2 of the housing member 206 and to hold the portion 204-1 of the at least one light guiding panel 204 disposed within the longitudinal gap 310 of the housing member 206. In the illustrated embodiment, the plurality of end caps 208 may include a first end cap 208-1 adapted to be coupled to the end 206-1 of the housing member 206 and a second end cap 208-2 adapted to be coupled to the end 206-2 of the housing member 206. Constructional details of the first end cap 208-1 may be similar to the constructional details of the second end cap 208-2.

In an embodiment, each of the plurality of end caps 208-1, 208-2 may include, but is not limited to, a pair of protruded portions 318-1, 318-2 adapted to be engaged with the portion 204-1 of the at least one light guiding panel 204. Referring to Figure 6a, a gap ‘G’ may be defined between the pair of protruded portions 318-1, 318-2. The gap ‘G’ may be adapted to be engaged with the portion 204-1 of the at least one light guiding panel 204 to vertically stabilize the at least one light guiding panel 204 with respect to the housing member 206.

Further, each of the plurality of end caps 208-1, 208-2 may include an extending portion 320 adapted to support the portion 204-1 of the light guiding panel 204 and to hold the portion 204-1 above the plurality of light sources 210 of the light substrate 202. In particular, the extending portion 320 maintains a distance between the portion 204-1 of the light guiding panel 204 and the plurality of light sources 210. Each of the plurality of end caps 208-1, 208-2 may be adapted to apply a force on the housing member 206 to resiliently push the first engaging wall 304 and the second engaging wall 306 towards each other to hold the portion 204-1 of the at least one light guiding panel 204 between the first engaging portion 312 and the second engaging portion 314.

Figures 7a, 7b, 7c, and 7d illustrate isometric views of the lighting apparatus 100 with different light guiding panels, according to an embodiment of the present disclosure. For the sake of brevity, details of the present disclosure that are explained in detail in the description of Figures 1a-1c, Figure 2, Figure 3, Figure 4, Figures 5a-5b, Figures 6a-6c are not explained in detail in the description of Figures 7a-7d.

In an embodiment, the lighting apparatus 100 may be adapted to be deployed with light guiding panels having different constructional aspects. For instance, referring to Figure 7a, the housing member 206 of the lighting apparatus 100 may be coupled to a light guiding panel 204’ having a combination of convex and concave profiles. Referring to Figure 7b, the housing member 206 of the lighting apparatus 100 may be coupled to a light guiding panel 204’’ having a semi-circular profile. Further, referring to Figure 7c, the housing member 206 of the lighting apparatus 100 may be coupled to a light guiding panel 204’’’ having a triangular profile.

Although, the present disclosure is explained with respect to the lighting apparatus 100 employed with the light guiding panels 204, 204’, 204’’, and 204’’’. However, it should be appreciated by a person skilled in the art that it should not be construed as limiting, and the lighting apparatus 100 can be equally employed with light guiding panels having different shapes and sizes, without departing from the scope of the present disclosure.

In an embodiment, a plurality of light guiding panels 204 may be removably coupled to the housing member 206 of the lighting apparatus 100. The longitudinal gap may be adapted to receive portions of the plurality of light guiding panels 204. Referring to Figure 7d, the plurality of light guiding panels 204 may be coupled to the housing member 206 and adjacently positioned with respect to each other. Further, in the illustrated embodiment, each of the plurality of light guiding panels 204 may have a predefined printed pattern and coloured surfaces adapted to be illuminated by the light beams from the plurality of light sources 210.

As would be gathered, the present disclosure offers the lighting apparatus 100 for the plurality of light guiding panels 204. As explained earlier, the lighting apparatus 100 includes the housing member 206 having the longitudinal gap 310 adapted to removably attach the light guiding panel 204 with the housing member 206. Further, the lighting apparatus 100 includes the plurality of end caps 208-1, 208-2 adapted to be coupled to the housing member 206 to hold the light guiding panel 204 in the lighting apparatus 100. In order to attach the light guiding panel 204, the plurality of end caps 208-1, 208-2 is coupled to the ends 206-1, 206-2 of the housing member 206 in a manner that the first engaging wall 304 and the second engaging wall 306 are resiliently pushed to vary the longitudinal gap 310 and to hold the light guiding panel 204. Owing to such constructional aspects of the lighting apparatus 100, the light guiding panel 204 can be assembled or dissembled from the housing member 206 with ease. This substantially reduces the overall time consumed in replacing the light guiding panel 204 with another light guiding panel in the lighting apparatus 100.

Further, as explained earlier, light guiding panels 204 having different constructional and aesthetical aspects can be attached to the housing member 206 of the lighting apparatus 100. In particular, different light guiding panels can be deployed in the lighting apparatus 100 without altering the constructional or operational aspects of various sub-components of the lighting apparatus 100. This substantially reduces the overall manufacturing cost of the lighting apparatus 100. Further, this substantially increases the overall operational flexibility of the lighting apparatus 100 which can be achieved by deploying light guiding panels with different shapes, colours, or patterns without incorporating any alterations to the sub-components of the lighting apparatus 100.

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. An improved lighting apparatus (100) comprising:
a light substrate (202) adapted to support a plurality of light sources (210) to emit light beams;
at least one light guiding panel (204, 204’, 204’’, 204’’’) positioned on the light substrate (202) and adapted to receive light beams emitted from the plurality of light sources (210);
a housing member (206) adapted to encapsulate the light substrate (202) and removably hold the at least one light guiding panel (204, 204’, 204’’, 204’’’), wherein the housing member (206) defines a longitudinal gap (310) adapted to removably receive a portion (204-1) of the at least one light guiding panel (204, 204’, 204’’, 204’’’); and
a plurality of end caps (208-1, 208-2) adapted to be coupled to ends of the housing member (206) and to hold the portion (204-1) of the at least one light guiding panel (204, 204’, 204’’, 204’’’) disposed within the longitudinal gap (310) of the housing member (206).

2. The improved lighting apparatus (100) as claimed in claim 1, wherein the at least one light guiding panel (204, 204’, 204’’, 204’’’) is adapted to be vertically oriented with respect to the light substrate (202) and at least one edge of the at least one light guiding panel (204, 204’, 204’’, 204’’’) is aligned with the plurality of light sources (210) disposed on the light substrate (202).

3. The improved lighting apparatus (100) as claimed in claim 1, wherein the housing member (206) comprising:
a supporting wall (302) adapted to support the light substrate (202) within the housing member (206); and
a first engaging wall (304) aligned at an acute angle (?1) with respect to the supporting wall (302); and
a second engaging wall (306) disposed opposite to the first engaging wall (304) and aligned at an acute angle (?2) with respect to the supporting wall (302),
wherein the longitudinal gap (310) is defined between the first engaging wall (304) and the second engaging wall (306) to removably receive the portion (204-1) of the at least one light guiding panel (204, 204’, 204’’, 204’’’).

4. The improved lighting apparatus (100) as claimed in claim 3, wherein the supporting wall (302), the first engaging wall (304), and the second engaging wall (306) collectively define a channel (308) adapted to hold the light substrate (202) and the portion (204-1) of the at least one light guiding panel (204, 204’, 204’’, 204’’’).

5. The improved lighting apparatus (100) as claimed in claim 3, wherein the first engaging wall (304) and the second engaging wall (306) are adapted to be resiliently pushed together to vary the longitudinal gap (310) and to hold the at least one light guiding panel (204, 204’, 204’’, 204’’’).

6. The improved lighting apparatus (100) as claimed in claims 3 and 5, wherein the longitudinal gap (310) is greater than a thickness (T) of the at least one light guiding panel (204, 204’, 204’’, 204’’’).

7. The improved lighting apparatus (100) as claimed in claim 3, wherein the first engaging wall (304) and the second engaging wall (306) comprises a first engaging portion (312) and a second engaging portion (314), respectively, the longitudinal gap (310) is defined between the first engaging portion (312) and the second engaging portion (314).

8. The improved lighting apparatus (100) as claimed in claim 7, wherein each of the first engaging portion (312) and the second engaging portion (314) comprises a cavity (316-1, 316-2) defined along a length (L) of the housing member (206).

9. The improved lighting apparatus (100) as claimed in claim 8, wherein each of the first engaging portion (312) and the second engaging portion (314) comprises a first protruded member (402) and a second protruded member (404), wherein the cavity (316-1, 316-2) is defined between the first protruded member (402) and the second protruded member (404).

10. The improved lighting apparatus (100) as claimed in claim 1 further comprising a first elastic member (212-1) and a second elastic member (212-2) adapted to be positioned in the housing member (206) and abut the portion (204-1) of the light guiding panel (204, 204’, 204’’, 204’’’) positioned in the housing member (206).

11. The improved lighting apparatus (100) as claimed in claims 8 and 10, wherein the first elastic member (212-1) and the second elastic member (212-2) are removably positioned in the cavity (316-1) of the first engaging portion (312) and the cavity (316-2) of the second engaging portion (314), respectively.

12. The improved lighting apparatus (100) as claimed in claims 5 and 11, wherein each of the first elastic member (212-1) and the second elastic member (212-2) comprises:
a first portion (502) adapted to be positioned in the cavity (316-1, 316-2); and
a second portion (504) extending from the first portion (502) and adapted to abut the portion (204-1) of the light guiding panel (204, 204’, 204’’, 204’’’),
wherein the second portion (504) is adapted to deform to hold the portion (204-1) of the light guiding panel (204, 204’, 204’’, 204’’’) when the first engaging wall (304) and the second engaging wall (306) are resiliently pushed in a direction towards each other.

13. The improved lighting apparatus (100) as claimed in claim 3, wherein each of the first engaging wall (304) and the second engaging wall (306) comprises an inner surface (406) and an outer surface (408).

14. The improved lighting apparatus (100) as claimed in claim 13, wherein the inner surface (406) is provided with a substrate holder (410) adapted to push edges of the light substrate (202) towards the supporting wall (302), the substrate holder (410) includes a pair of projections (410-1, 410-2) formed on inner surfaces (406) of the first engaging wall (304) and the second engaging wall (306).

15. The improved lighting apparatus (100) as claimed in claim 1, wherein each of the plurality of end caps (208-1, 208-2) comprises a pair of protruded portions (318-1, 318-2) adapted to be engaged with the portion (204-1) of the at least one light guiding panel (204, 204’, 204’’, 204’’’).

16. The improved lighting apparatus (100) as claimed in claim 15, wherein a gap (G) is defined between the pair of protruded portions (318-1, 318-2) and is adapted to be engaged with the portion (204-1) of the at least one light guiding panel (204, 204’, 204’’, 204’’’) to vertically stabilize the at least one light guiding panel (204, 204’, 204’’, 204’’’) with respect to the housing member (206).

17. The improved lighting apparatus (100) as claimed in claim 15, wherein each of the plurality of end caps (208-1, 208-2) comprises an extending portion (320) adapted to support the portion (204-1) of the light guiding panel (204, 204’, 204’’, 204’’’) and to hold the portion (204-1) above the plurality of light sources (210) of the light substrate (202).

18. The improved lighting apparatus (100) as claimed in any of preceding claims, wherein each of the plurality of end caps (208-1, 208-2) is adapted to apply a force on the housing member (206) to resiliently push the first engaging wall (304) and the second engaging wall (306) towards each other to hold the portion (204-1) of the at least one light guiding panel (204, 204’, 204’’, 204’’’).

19. The improved lighting apparatus (100) as claimed in any of preceding claims, the housing member (206) is embodied as a polygonal tubular housing.

20. The improved lighting apparatus (100) as claimed in any of preceding claims, wherein the at least one light guiding panel (204, 204’, 204’’, 204’’’) has a predefined printed pattern which is illuminated by the light beams emitted from the plurality of light sources (210).

21. The improved lighting apparatus (100) as claimed in any of preceding claims, the at least one light guiding panel (204, 204’, 204’’, 204’’’) has coloured surfaces adapted to be illuminated by the light beams from the plurality of light sources (210).

22. The improved lighting apparatus (100) as claimed in any of preceding claims, the longitudinal gap (310) is adapted to receive portions (204-1) of a plurality of light guiding panels (204, 204’, 204’’, 204’’’).

23. The improved lighting apparatus (100) as claimed in claim 22, the plurality of light guiding panel (204, 204’, 204’’, 204’’’) has a predefined printed pattern and coloured surfaces adapted to be illuminated by the light beams from the plurality of light sources (210).

24. The improved lighting apparatus (100) as claimed in any of preceding claims, wherein the light substrate (202) has a Driver on Board (DOB) module.