Claims:I/We claim:
1. A vehicle (200) comprising:
at least one front wheel (115) movably coupled to a steering column (113) at a lower end thereof, said steering column (113) coupled to a vehicle steering assembly (107) at an upper end thereof;
at least one rear wheel (125) capable of being rotated by a power unit of said vehicle (200);
a front structure (215);
a rear structure (220); said rear structure (220) comprising, a seat sub-structure (135) extending longitudinally rearwardly above said at least one rear wheel (125), and a top structure (208) disposed between said front structure (215) and said rear structure (220), said top structure(208) extending upwardly rearwardly from said front structure (215) connecting said rear structure (220);
wherein,
said top structure (208) includes one or more downwardly retractable member (332) disposed sidewardly along a left side at a leftmost region (320) and a right side as a rightmost region (325) of said top structure (208);
wherein,
said top structure (208) and said one or more downwardly retractable member (332) includes a plurality of solar panels (213).
2. A vehicle (200) comprising:
at least one front wheel (115) movably coupled to a steering column (113) at a lower end thereof, said steering column (113) coupled to a vehicle steering assembly (107) at an upper end thereof;
at least one rear wheel (125) capable of being rotated by a power unit of said vehicle (200),
a front structure (215),
a rear structure (220) ; said rear structure (220) comprising, a seat sub-structure (135) extending longitudinally rearwardly above said at least one rear wheel (125), and a top structure (208) disposed between said front structure (215) and said rear structure (220), said top structure(208) extending upwardly rearwardly from said front structure (215) connecting said rear structure (220);
wherein,
said vehicle (210) includes a plurality of portions, such as one or more fixed portions and one or more flexible portions.
3. The vehicle (200) as claimed in claim 2, wherein said one or more flexible portions includes said one or more retractable member (332).
4. The vehicle (200) as claimed in claim 2, wherein said one or more fixed portions include a top structure (208), a front structure (215) and a rear structure (220).
5. The vehicle (200) as claimed in claim 4, wherein said front structure (215) is a windshield member (210) extending upwardly towards front of said vehicle.
6. The vehicle (200) as claimed in claim 4, wherein said rear structure (220) includes a mounting member (302) capable of receiving one or more portions of said rear structure (220).
7. The vehicle (200) as claimed in claim 1 or 6, wherein said top structure (208) includes an extended backrest structure (206) and a backrest structure (204) extending rearwardly downwardly and said backrest structure (204) joining said mounting member (302) of said rear structure (220).
8. The vehicle (200) as claimed in claim 1, wherein said one or more said retractable member (332) is capable of being detachably attached.
9. The vehicle (200) as claimed in claim 1, wherein said one or more said retractable member (332) is capable of being folded when said vehicle (200) is in operable condition.
10. The vehicle (200) as claimed in claim 1, wherein said one or more retractable member (332) is capable of being unfolded or deattached from one or more fixed portions of said vehicle (200) when said vehicle (200) is in inoperable condition.
11. The vehicle (200) as claimed in claim 1, wherein said one or more retractable member (332) is retractable in nature.
12. The vehicle (200) as claimed in claim 1, wherein said one or more retractable member (332) is capable of being folded upwardly up to a predetermined length (L) or completely and unfolded downwardly up to a predetermined length (L) or completely up to the full length substantially equal to the height of said vehicle (200).
13. The vehicle (200) as claimed in claim 1, wherein said one or more retractable member (332) is capable of being folded or unfolded manually or by automated means.
14. The vehicle (200) as claimed in claim 1, wherein said top structure (208) includes a cover member extending substantially horizontally rearwardly above said seat sub-structure (135), and wherein said one or more downwardly retractable member (332) is disposed within said cover member.
15. The vehicle (200) as claimed in claim 1, wherein said vehicle (200) is an electric operated vehicle, and wherein said power unit is an electric motor.
16. The vehicle (200) as claimed in claim 1, wherein said vehicle (200) is a hybrid vehicle, and wherein said power unit includes an engine assembly and an electric motor.
17. The vehicle as claimed in claim 1, wherein said top structure (208) and said retractable member (332) is made of a light weight material selected from a group consisting of composite material like fiber reinforced plastic and polyacrylonitrile, aluminum, sheet metal and plastic.
18. The vehicle as claimed in claim 1, wherein said top structure (208) includes a bottom surface and a top surface, and wherein said top surface is provided with one or more solar panels (213) capable of receiving solar energy.
19. The vehicle as claimed in claim 1, wherein said one or more solar panels (213) being capable of generating energy by being exposed to any incident light radiation.
20. The vehicle as claimed in claim 1, wherein said top structure (208) is substantially dome shaped and provided with chamfered edges.
21. The vehicle as claimed in claim 1, wherein said top structure (208) is spheroid shaped without the edges being chamfered.
22. The vehicle (200) as claimed in claim 1, wherein said one or more retractable member (332) extends substantially sidewardly downwardly from the edges of said top structure (208) of said vehicle (100).
23. The vehicle (200) as claimed in claim 1, wherein said top structure (208) is at least one of a half-egg shaped, elliptical solid, elliptical spheroid and egg shaped.
24. The vehicle (200) as claimed in claim 1, wherein said one or more retractable member (332) is capable of being foldably stowed inside a boxlike compartment, and wherein said boxlike compartment is capable of being detachably attached to a mounting member (302) of said rear structure (220) of said vehicle (200).
25. The vehicle (200) as claimed in claim 24, wherein said boxlike compartment, is an extended backrest structure 206 of said vehicle (200).
26. The vehicle (200) as claimed in claim 24, wherein said box like compartment acts as a solar kit assembly capable of being detachably attached to said vehicle (200).
27. The vehicle (200) as claimed in claim 1, wherein said one or more retractable member (332) of said vehicle (200) includes one or more sensors restricting the downward movement of said one or more retractable member (332) when said vehicle (200) is operable.
28. The vehicle (200) as claimed in claim 1, wherein said top structure (209) includes at least one pillion handle (270) disposed downwardly from its side surface (295) allowing the pillion to hold when said vehicle (200) is operable.
29. The vehicle (200) as claimed in claim 1, wherein one square centimeter of said plurality of solar panels (213), is capable of generating approximately 6 to 16 milliwatts of power per square centimeter.
30. The vehicle (200) as claimed in claim 1, wherein said plurality of solar panels (213) of said vehicle (200) is capable of producing energy for auxiliary functions of said vehicle (200). , Description:TECHNICAL FIELD
[0001] The present subject matter, in general, relates to a vehicle and in particular, relates to a two-or three-wheeled vehicle.
BACKGROUND
[0002] Generally, small sized vehicles and especially vehicles used for personal transportation are made in a manner that typically the rider is capable of commuting from one place to another. Such small sized vehicles are also made to accommodate a pillion to accompany the rider. These vehicles are generally provided with two wheels. Though, in certain variants, they can be provided with an additional wheel added either to the front wheel or to the rear wheel or in some cases to both. Such configurations are provided to make the vehicle stand on the wheels instead of a dedicated vehicle support structure such as a center stand or a side stand. Further, addition of one or more wheels to two-wheelers also adds stability and balance while riding compared to a conventional two-wheeler thereby avoiding capsizing. All these are achieved without much increase on the overall width and length of a typical two-wheeler, which ensures that the rider can maneuver with nearly the same way as he or she does on a two-wheeler and the vehicle is more compact than a conventional four-wheeler. Such vehicles are also advantageously provided with a small sized power unit.
[0003] One of the primary features of such a vehicle is that the occupants of the vehicle including the rider are seated on a seating structure that allows the occupants to straddle or step-through to occupy the seat and are sans doors. The occupants are generally seated one behind the other, in some cases they are seated side by side. More often than not, such vehicles are exposed to atmosphere and are not enclosed in nature, and in several instances, do not contain a roof structure.

BRIEF DESCRIPTION OF THE DRAWINGS
[0004] The detailed description is described with reference to the accompanying figures.
[0005] Fig. 1 illustrates a step-through type vehicle, in accordance with an embodiment of the present subject matter.
[0006] Fig. 2 (A) illustrates a left side perspective view of a vehicle provided with a canopy structure, in accordance with an embodiment of the present subject matter.
[0007] Fig. 2 (B) depicts a left side perspective view of the vehicle shown in Fig. 2 (A) provided with a canopy structure, in accordance with another embodiment of the present subject matter.
[0008] Fig. 3 depicts another left side perspective view of the vehicle shown in Fig. 2 (B) provided with a canopy structure, in accordance with an embodiment of the present subject matter.
[0009] Fig. 4A depicts a left side perspective view of a vehicle provided with a canopy structure, in accordance with an embodiment of the present subject matter.
[00010] Fig. 4B illustrates a left side perspective view of a vehicle provided with a canopy structure, in accordance with an embodiment of the present subject matter.
[00011] Fig. 4C depicts a left side perspective view of a vehicle provided with a canopy structure, in accordance with another embodiment of the present subject matter.
[00012] Fig. 5 depicts one or more retractable portion detached from the vehicle and placed under sunlight in accordance with an embodiment of the present subject matter.

DETAILED DESCRIPTION
[00013] Several attempts have been made in the past to provide compact personal transportation vehicles such as two-wheelers with a roof like structure. However, such attempts have hardly been successful due to various technical limitations.
[00014] One such technical limitation being the bulkier configurations of roof like structures known in the existing art. Such bulkier configurations almost make a two-wheeled vehicle used for personal transportation look like a passenger car, which in turn adversely affects utility for the user as well as design flexibility for the designer. Further, such known configurations are much heavier and increase the position of the center of gravity of the vehicle from the ground level, due to a larger disposition of mass above the seating position of the vehicle. It is more applicable in case of vehicles provided with two or three wheels, which makes vehicle handling much more difficult. Moreover, such roof like structures provided on vehicles are generally provided for better safety of the rider & pillion from external weather conditions such as wind, dust, sun etc.. In the known art, such structures are generally made of combination of solar panels & support members which either run on complete solar energy or aid the powertrain and / or one or more loads of the vehicle.
[00015] Furthermore, existing vehicles which are provided with solar panel embedded roof structures are either formed as complete enclosures, which clearly make vehicle handling and vehicle manoeuvring difficult, or as extended visor like panels, which leads to various other problems including vibration of panels at high speed and fragile roof structure design without stable support. Further, in such vehicles, extension of solar panels throughout the enclosure including the front visor area towards the pillars supporting the roof structure can lead to poor corner visibility & accidents. Moreover, widening the pillar area in order to enhance the solar impedance area is also detrimental to safety as it may lead to obstructing or restricting the rider’s view. Furthermore, reducing the pillar area may lead to loss of solar impedance area around the front portion of the vehicle, which is detrimental too.
[00016] Other than the above stated problems, there are other important problems that are associated with the existing solar panel embedded roof structures. These include positioning of rear view mirror assemblies, which are often extended in vehicle widthwise direction, which leads to various safety concerns. Moreover, in many known configurations, the space available for the occupants including the rider and the pillion are often compromised for the sake of increasing area of solar panels in the vehicle. Such vehicles referred to as canopy type vehicles often deviate from the basic requirement of a personal transportation type vehicle like two-wheeler and often end up in increasing the complexity for the user for the sake of providing a roof structure.
[00017] Moreover, there exist several problems with respect to vehicles provided with roof-top solar panel structures. For instance, in the past, various attempts relating to providing covers and/or roofs made of solar cells have been made, especially in bigger automobiles such as passenger cars. For instance, conventionally a tarpaulin-based cover is known to contain a plurality of solar cells. Such tarpaulin covers helps in externally covering the car when not in use. However, the drawback with such solar powered tarpaulin covers is that they are a separate entity from the vehicle and need to be stowed when vehicle is to be used. Moreover, they tend to sag during prolonged usage due to its flexible nature, which may damage the solar cells disposed on the external surface.
[00018] In the past, attempts have also been made to address the above-described problem of sagging. For instance, solar cell covers were made to include intermediate structural members and elastic members at ends provided with solar cells. However, such structures are complicated and cumbersome to use. They still have to be manually unfolded and covered over the car.
[00019] The problem with the flexibility of covers with solar cells was overcome by fixed shields provided with solar cells. The fixed shield is electrically connected with the battery of the car enabling charging of the battery using solar power. However, such shields are still a separate entity from the vehicle itself and the use of such shields is cumbersome due to its odd shape and heavy structure. Moreover, the fixed shields may not completely cover all area e.g. corners of the car.
[00020] The problem associated with the cumbersome usage of the solar shields was overcome by automatic shields provided with solar cells, which includes flexible shields and other structural members to provide necessary rigidity. Such automatic shields are typically housed in a dedicated storage space usually provided at the rear of a car. However, such structures required dedicated storage in the vehicle, which may not be the case with all segments of automobiles especially compact saddle type two and three wheeled vehicles. Further, such structures also require dedicated mechanism for automatic unfolding and folding of the shield.
[00021] Also known are vehicles with portable solar shields. For instance, a known two-layer portable solar shield contains an outer layer with plurality of solar cells and an inner layer provided with a battery capable of being charged by the solar cells. Typically, such construction comes with an inbuilt pump used for inflating and deflating the solar shield. However, such structures are both complicated and difficult to manufacture and use.
[00022] The other known type of portable solar shields includes foldable solar panels, which has a construction to achieve folding and unfolding of the solar panels, for instance, a central shaft over which the solar panel is folded, a guide member over which the solar panels unfold and electrically controlled actuators, which enable folding and unfolding of the solar panels. As with the other portable solar shield, this type of construction is also cumbersome to use and involves a complex construction.
[00023] Further attempts were made to solve the problem with respect to handling of the solar panel covers for automobiles by using commonly known shape memory alloys on the flexible solar panels. However, usage of such flexible solar panels with shape memory alloys is restricted to the shape of a particular vehicle and hence cannot be used across all types of vehicles, especially vehicles with canopy that already has the necessity to balance and are not a cost effective solution. Thus, the dynamic requirements of such vehicles with canopy make it difficult to adapt structures with shape memory alloys. Further, such flexible solar panels with shape memory alloys are stored in a dedicated storage space upon folding. Hence, any such addition of storage space adds to the overall weight of the vehicle with canopy structure, which in turn affects the dynamics of the vehicle. Moreover, it is clear from the available technologies in the state of the art that almost all of the solutions provided including that of shape memory alloys, automatic folding mechanism leads to substantial increase in the cost of the vehicle. Hence, the solutions available in the state of the art cannot be considered as economically feasible solution to be implemented in vehicles provided with canopy structure.
[00024] Thus, there is a requirement of providing a solar panel for a vehicle with a canopy structure that overcomes all the above stated problems known in the prior art.
[00025] The present subject matter has been devised in view of the above circumstances as well as solving other problems of known art.
[00026] In an embodiment of the present subject matter, the present subject matter relates to a vehicle used for personal transportation with a portable canopy structure provided with solar panels.
[00027] As per an aspect of the present embodiment of the present subject, the canopy structure of the present subject matter includes a plurality of portions containing solar panels or array of photo voltaic cells embedded in the panel capable of receiving solar energy and charging an energy storage device. The plurality of portions containing solar panels includes a combination of one or more fixed portions and one or more flexible portions. Configuring the solar panel with split hybrid design portions viz. fixed and flexible portions enables maximum exposure area when both the fixed and flexible portions are employed, while minimum exposure area is achieved when only fixed portion is employed.
[00028] As per another aspect of the present embodiment of the present subject, the one or more fixed portions of the vehicle include a front structure, a rear structure and a top structure. The mounting member of the rear structure is a pillion handle. The top structure is one of the one or more fixed portions and present at the top of the vehicle, forming a roof type structure for the vehicle and includes plurality of solar panels. Further the top structure is made of a single piece connecting the front structure and the rear structure of the vehicle.
[00029] As per another aspect, the one or more flexible portions extend substantially sidewardly downwardly from the edges of the top structure of the vehicle. The one or more flexible portions include a plurality of solar panels.
[00030] As per another aspect, the one or more fixed portions of the plurality of portions includes a first portion acting as a cover member connecting the windshield member at a front end thereof and an upwardly extending second portion at a rear end thereof. The second portion is detachably attached to a mounting member of the rear structure.
[00031] As per another aspect, the fixed portion includes a cover member extending substantially horizontally rearwardly above a seat sub-structure. The cover member is capable of shielding occupants of the vehicle, for example, in the first configuration, from external environmental factors including wind, rainfall and snowfall.
[00032] As per another aspect of the present embodiment, the one or more flexible portions are capable of being detachably attached. The one or more flexible portions are in folded condition or detached when the vehicle is in operable condition.
[00033] As per another aspect of the present embodiment, the one or more flexible portions are in unfolded condition or attached with the one or more fixed portions when the vehicle is in inoperable condition.
[00034] As per another embodiment, the top structure is substantially dome shaped and provided with chamfered edges. In an alternative embodiment, the top structure is spheroid shaped without the edges being chamfered. In a further alternative embodiment, the top structure is spheroidal, for example half-egg shaped or elliptical profile. Further, in other alternative embodiments, the top structure is elliptical spheroid or egg shaped.
[00035] In another embodiment, the vehicle is an electric operated vehicle, wherein the power unit is an electric motor. In another embodiment, the vehicle is a hybrid vehicle, and the power unit includes an engine assembly and an electric motor.
[00036] In an embodiment, the one or more portions of the fixed portion include at least one portion acting as a backrest member extending substantially upwardly from a rearmost portion of the seat sub-structure.
[00037] In an alternate embodiment the one or more flexible portions are retractable and capable of being folded upwardly up to a predetermined full length substantially equal to length of the vehicle or completely and unfolded downwardly up to a predetermined length or completely manually or by automated means. In an alternate embodiment the one or more flexible portions include one or more sensors that restrict the downward movement of the one or more flexible portions when the vehicle is in operable condition.
[00038] In another embodiment, the plurality of portions viz., one or more fixed portions and one or more flexible parts is made of a light weight material selected from a group consisting of composite material like fiber reinforced plastic and polyacrylonitrile, aluminum, sheet metal and plastic.
[00039] In another embodiment, the one or more flexible portions is capable of being detached from the vehicle and the solar panels can produce solar power and charge a power source separately.
[00040] In an embodiment, the one or more flexible portions is capable of being foldably stowed inside a boxlike compartment, and the boxlike compartment is capable of being detachably attached to a mounting member of the rear structure of the vehicle. As per another embodiment the box like compartment wherein is an extended backrest structure of said vehicle.
[00041] In an embodiment, the box like compartment acts as a solar kit assembly capable of being detachably attached to the vehicle.
[00042] In an embodiment, the plurality of solar panels of the vehicle is capable of producing energy for auxiliary functions of the vehicle, thereby eliminating the need of an auxiliary battery of the vehicle.
[00043] These and other advantages of the present subject matter would be described in greater detail in conjunction with and embodiment of a saddle type two wheeled vehicle along with the figures in the following description. The present subject matter is further described with reference to accompanying figures. It should be noted that the description and figures merely illustrate principles of the present subject matter. Various arrangements may be devised that, although not explicitly described or shown herein, encompass the principles of the present subject matter. Moreover, all statements herein reciting principles, aspects, and examples of the present subject matter, as well as specific examples thereof, are intended to encompass equivalents thereof.
[00044] Fig. 1 illustrates a left side view of an exemplary vehicle 100, in accordance with an embodiment of the present subject matter. The vehicle 100 has a frame assembly 105 having a step-through type layout. The frame assembly 105 includes a head tube 105A, a main tube 105B extending downwardly rearward from the head tube 105A, and a pair of railing 105C that extend inclinedly rearward. A handlebar assembly 110 is mounted to a steering shaft (not shown). The steering shaft is rotatably supported by the head tube 105A. A front wheel 115 is connected to the handle bar assembly 110 through one or more front suspension(s) 120. A power unit 180 is swingably mounted to the frame assembly 105. In an embodiment, the power unit 180 is an engine functionally coupled to a rear wheel 125. In another embodiment, the power unit 180 is a motor, for example, a hub motor mounted on the hub of the rear wheel 125. In an alternative embodiment, the power unit 180 is a rotating shaft motor mounted on swinging portion, while in another alternative embodiment, the power unit 180 is a chassis mounted shaft rotating motor.
[00045] Further, the rear wheel 125 is connected to the frame assembly 105 through one or more rear suspension(s) 130. In an embodiment, the power unit 180 is swingably connected to the frame assembly 105 through a toggle link (not shown). A seat assembly 135, also interchangeably called as a seat sub-structure 135 is disposed upwardly of the power unit 180 and is supported by the pair of railings 105C. A storage compartment (not shown) provided below the seat assembly 135 are supported by the pair of railing(s) 105C. The utility box is accessible in an open condition of the seat assembly 135.
[00046] Furthermore, the vehicle 100 is provided with plurality of panels 140A, 140B, and 140C. A floorboard 145 is disposed at a step-through space defined by the frame assembly 105. The user can operate the vehicle by resting feet on the floorboard 145, in a sitting position. A front fender 150 is covering at least a portion of the front wheel 115. In the present embodiment, the front fender 150 is integrated with the panels 140A. A rear fender 155 covers at least a portion of the rear wheel 125. The front fender 150 and the rear fender 155 prevent splashing of dirt on to the vehicle parts and away from the vehicle 100. In one embodiment, a fuel tank (not shown) is supported by the frame assembly 105 and is functionally coupled to the engine assembly 180. The vehicle 100 comprises of plurality of electrical/electronic components including a headlight 160A, a tail light 160B, a battery (not shown), a transistor controlled ignition (TCI) unit (not shown), an alternator (not shown), a starter motor (not shown).
[00047] Fig. 2 (A) illustrates a left side perspective view of a vehicle 200-1 provided with a canopy structure, in accordance with an embodiment of the present subject matter. In an embodiment, the canopy structure of the vehicle 200 includes a plurality of portions containing solar panels 213 or array of photo voltaic cells embedded in the panel capable of receiving solar energy and charging an energy storage device. The plurality of portions containing solar panels 213 includes one or more fixed portions and one or more flexible portions. The one or more fixed portions of the vehicle 200 include a front structure 215, a rear structure 220 and a top structure 208. The top structure 208 extends between the front structure 215 and the rear structure 220 of the vehicle 200. In an embodiment, the top structure 208 is made of a single piece adaptable to be joined with a windshield structure 210, also called as a windshield member 210 of the front structure 215 at a front end thereof. Similarly, in an embodiment, the top structure 208 is adaptable to be joined with an extended backrest structure 206, extending upwardly rearward from a top portion of a backrest structure 204, also called as a backrest member 204 of the rear structure 220 of the vehicle 200.
[00048] As per another embodiment, the top structure 208 is substantially dome shaped and provided with chamfered edges. In an alternative embodiment, the top structure is spheroid shaped without the edges being chamfered. In a further alternative embodiment, the top structure 208 is spheroidal, for example half-egg shaped or elliptical profile. Further, in other alternative embodiments, the top structure 208 is elliptical spheroid or egg shaped.
[00049] As per another aspect, the said one or more fixed portions of the plurality of portions includes a first portion (not shown) acting as a cover member connecting the windshield structure 210 at a front end thereof and an upwardly extending second portion (not shown) at a rear end thereof. The second portion (not shown) is detachably attached to a mounting portion 302 of the rear structure 220. As per another aspect, the one or more fixed portions include a cover member extending substantially horizontally rearwardly above a seat sub-structure 135. The cover member (not shown) is capable of shielding occupants of the vehicle 200, for example, in the first configuration, from external environmental factors including wind, rainfall and snowfall.
[00050] In an embodiment, the windshield structure 210 includes a visor capable of shielding a rider of the vehicle 200 from wind and sunlight, which otherwise obstructs the rider from maneuvering ahead with ease. In one embodiment, the top structure 208 is joined to the extended backrest structure 206 by means of one or more couplers 212, which apart from providing a rigid joint at the ends also enhances ease of assembly and disassembly. In an embodiment, the extended backrest structure 206 of the rear structure 220 is provided with a transversely extending head rest portion 285, which allows a pillion rider to comfortably rest his/her head during ride. The rear structure 220 includes a mounting member 302 capable of receiving one or more portions of said rear structure 220. In an embodiment, the backrest structure 204 and the extended backrest structure 206 are aligned in order to ergonomically support the seating position of the pillion rider. In an alternative embodiment, the top structure 208 is enmolded with the front structure 215 and the rear structure 220.
[00051] Fig. 2 (B) depicts a left side perspective view of the vehicle shown in Fig. 2 (A) provided with a canopy structure, in accordance with another embodiment of the present subject matter. As per this embodiment, the vehicle 200 has a top structure 208 that is dome shaped. In an embodiment, the top structure 208 of the vehicle 200 is oval shaped when viewed from the top. Further, in one embodiment, the top structure 208 is embedded with a plurality of solar panels 213 In an embodiment, the top structure 208 is rounded at all corners extending forwardly to join with the windshield structure 210 of the front structure 215 (shown in Fig. 2A), and extending rearwardly to join with the extended backrest structure 206 of the rear structure 220. In an embodiment, the plurality of solar panels 213 are disposed uniformly across an upper surface of the top structure 208 extending forwardly and downwardly to a front most portion 275 and extending sidewardly and downwardly to a sideward portion 280. In an embodiment, the sideward portion 280 of the plurality of solar panels 213 is substantially perpendicular to the angle of incidence of sunlight allowing maximum exposure to sunlight during all positions of sun in a day. In another embodiment the sideward portion 280 is one of the one or more fixed portions of the vehicle 200. An outer surface area 223 of the sideward portion of the panel ranges from 5% to 50% of the outer surface area of the top structure 208 In an embodiment, the top structure 209 includes at least one pillion handle 270 disposed downwardly from its side surface 295 (shown in Fig. 3) allowing the pillion to hold during riding condition.
[00052] Fig. 3 depicts another left side perspective view of the vehicle 200 shown in Fig. 2 (B) provided with a canopy structure, in accordance with another embodiment of the present subject matter. In an embodiment, the plurality of solar panels 213 (shown in Fig. 2(A)) embedded to the upper surface of the top structure 208 are uniformly distributed such that a square unit 305, for example of a size of one square centimetre of the plurality of solar panels 213, is capable of generating approximately 6 to 16 milliwatts of power per square centimetre . In an embodiment, the plurality of solar panels 213 are closely spaced apart from each other uniformly across the dome shaped top structure 208. In another embodiment, the plurality of solar panels 213 are more densely stacked at the top structure 208, while are not as densely stacked extending forwardly towards the front most portion 275 and a corresponding rearwardly disposed rear most portion (not shown). In one embodiment, the plurality of solar panels 213 stacked in the sideward portion 280 (shown in Fig. 2B) extending downwardly to a side most portion 295 is substantially higher as compared to the plurality of solar panels stacked forwardly extending towards the front most portion 275 and the corresponding rear most portion.
[00053] In an embodiment, the front most portion 275 of the plurality of solar panels 213 are so disposed on the top structure 208 that the positioning of the solar panels 213 do not substantially affect a cone of vision 290 of the rider at any point of time during the ride. In an embodiment, the front most portion 275 is disposed such that the line of vision of the rider ranges in a cone angle O from approximately 0° to 10°. In another embodiment, the front most portion 275 can extend downwardly to a maximum predetermined position up to which the line of vision 290 of the rider remains unaffected, for example in a cone angle O ranging approximately between 10° to 30°. In an alternative embodiment, the top structure 208 of the vehicle 200 can be of any other shape other than a spheroidal, dome or oval shape, which provides a similarly enhanced area of exposure of the plurality of solar panels 213 to sunlight at any point of time during the day or any other incident light. In an embodiment, the top structure 208 protects the rider and the pillion from direct exposure to sunlight at all time of the day. Similarly, the vehicle 200 of the present subject matter is a green vehicle capable of utilizing the power generated by the plurality of solar panels 213 to power various loads of the vehicle 200. In an embodiment, the vehicle 200 provides an eco-friendly personal transportation means for the user, which generates less pollutants.
[00054] Fig. 4A depicts a left side perspective view of a vehicle 200 provided with a canopy structure, in accordance with another embodiment of the present subject matter. In this embodiment, the top structure 208 of the vehicle 200 is enmolded with the front structure 215 (shown in Fig. 2A) and the rear structure 220 (shown in Fig. 2A). In one embodiment, the top structure 208 of the present subject matter is made of a light weight material selected from a group consisting of composite material like fiber reinforced plastic and polyacrylonitrile, aluminum, sheet metal and plastic. In an embodiment, the canopy structure of the present subject matter includes a plurality of portions containing solar panels 213 (shown in Fig. 2A) or array of photo voltaic cells embedded in the panel capable of receiving solar energy and charging an energy storage device. The plurality of portions containing solar panels 213 includes one or more fixed portions and one or more flexible portions 332, also called as a retractable member 332. The splitting of solar panel 213 portions into fixed and flexible portions enables maximum exposure area when both the fixed and flexible portions are employed, while minimum desirable exposure area is achieved when only fixed portion is employed. In an embodiment, the one or more retractable member 332 includes a left most region 320 of the retractable member 332 and a right most region (325) of the retractable member 332 of the vehicle 200.. The one or more retractable members 332 is capable of extending substantially sidewardly downwardly from the edges of the top structure 208 of the vehicle 200 including a plurality of solar panels 213. The one or more retractable members 332 are capable of being detachably attached from the edges of the top structure 208 of the vehicle 200. The one or more retractable members 332 are retractable and capable of being folded upwardly and unfolded downwardly manually or by automated means. The one or more retractable member 332are in folded condition or detached when the vehicle 200 is in operable condition. The one or more retractable member 332are in unfolded condition up to a predetermined length L and attached with the one or more fixed portions for example, the top structure 208 when the vehicle 200 is in operable condition. The one or more retractable member 332are in completely unfolded condition and attached with the one or more fixed portions for example, the top structure 208 when the vehicle 200 is in inoperable condition. The one or more flexible retractable member 332 include one or more sensors (not shown) that restrict the downward movement of the one or more retractable member 332 from a predetermined length L or from complete unfolded condition, when the vehicle 200 is in operable condition. In this present embodiment the one or more retractable member 332 are in half folded state, or are of a length which reaches up to an lower end portion of extended backrest structure 206 of the vehicle 200, towards the backrest member 204 up to the predetermined length L of the vehicle 200.
[00055] Fig. 4B illustrates a left side perspective view of a vehicle 300-1 provided with a canopy structure, in accordance with another embodiment of the present subject matter. In this embodiment, the one or more retractable members 332 are in half folded state, or are of a length which reaches up to an end portion of extended backrest structure 206 (shown in Fig. 2A) of the vehicle 200, towards the backrest member 204 up to the predetermined length L of the vehicle 200. The one or more retractable members 332 include a plurality of solar panels 213. The plurality of solar panels 213 embedded to the upper surface of the top structure 208 is uniformly distributed such that a square surface area unit 305, for example of a size of one square centimetre of the plurality of solar panels 213, is capable of generating approximately 6 to 16 milliwatts of power per square centimetre. In an embodiment, the plurality of solar panels 213 are closely spaced apart from each other uniformly across the one or more flexible portions 332.
[00056] Fig. 4C depicts a left side perspective view of a vehicle 200 provided with a canopy structure, in accordance with another embodiment of the present subject matter. In this embodiment, the one or more retractable members 332 are in unfolded condition or attached with the one or more fixed portions, for example, edges of the top structure 208, when the vehicle 200 is in inoperable or parked condition. The one or more retractable members 332 are capable of being unfolded downwardly completely manually or by automated means. The plurality of solar panels 213 embedded to the upper surface of the top structure 208 is uniformly distributed such that a square surface area unit 305, for example of a size of one square centimetre of the plurality of solar panels 213, is capable of generating approximately 6 to 16 milliwatts of power per square centimeter. In an embodiment, the plurality of solar panels 213 are closely spaced apart from each other uniformly across the one or more flexible portions 332.
[00057] Fig. 5 depicts one or more retractable members 332 detached from the vehicle 200 and placed under solar rays 335 in accordance with an embodiment of the present subject matter. In an embodiment, the one or more retractable members 332 including plurality of solar panels 213, is capable of being directly placed under the solar rays 335 or any other source light energy radiation and desirable intensity in order to enable it to produce solar power and at the same time charge a power source (not shown) by means of a charging means 330. As per another embodiment the one or more retractable members 332 is capable of being foldably stowed inside a boxlike compartment (not shown), and the boxlike compartment is capable of being detachably attached to a mounting member 302 (shown in Fig. 2A) of the rear structure 220 (shown in Fig. 2A) of the vehicle 200.
[00058] In an embodiment, the box like compartment acts as a solar kit assembly capable of being detachably attached to the vehicle 200.
[00059] In another embodiment the boxlike compartment, is an extended backrest structure 206 of the vehicle 200.
[00060] In another embodiment, the vehicle 200 is an electric operated vehicle, wherein the power unit is an electric motor. In another embodiment, the vehicle 200 is a hybrid vehicle, and the power unit includes an engine assembly and an electric motor.
[00061] Many modifications and variations of the present subject matter are possible within the spirit and scope of the present subject matter, in the light of above disclosure.

LIST OF REFERENCE NUMERALS

100, 200: Vehicle
105: Frame assembly
105A: Head tube
105B: Main tube
105C: Pair of railing
110: Handle
115: Front wheel
120: Front suspension(s)
125: Rear wheel
130: Rear suspension(s)
135: Seat assembly
140A, 140B, 140C: plurality of panels
145: Floorboard
150: Front fender
155: Rear fender
160A: Headlight
160B: Tail light
180: Power unit
204: Backrest structure/ member
206: Extended backrest structure
208: Top structure
210: Windshield structure/ member
212: Couplers
213: Solar panel
215: Front structure
220: Rear structure
223: Outer surface area
275: Front most portion
280: Sideward portion
285: Head rest portion
290: Line of vision
295: Side surface
302: Mounting portion
305: Square unit
320: Leftmost region
325: Rightmost region
332: Reractable member
330: Charging means
335: Solar rays

TECHNICAL FIELD
[0001] The present subject matter, in general, relates to a vehicle and in particular, relates to a two-or three-wheeled vehicle.
BACKGROUND
[0002] Generally, small sized vehicles and especially vehicles used for personal transportation are made in a manner that typically the rider is capable of commuting from one place to another. Such small sized vehicles are also made to accommodate a pillion to accompany the rider. These vehicles are generally provided with two wheels. Though, in certain variants, they can be provided with an additional wheel added either to the front wheel or to the rear wheel or in some cases to both. Such configurations are provided to make the vehicle stand on the wheels instead of a dedicated vehicle support structure such as a center stand or a side stand. Further, addition of one or more wheels to two-wheelers also adds stability and balance while riding compared to a conventional two-wheeler thereby avoiding capsizing. All these are achieved without much increase on the overall width and length of a typical two-wheeler, which ensures that the rider can maneuver with nearly the same way as he or she does on a two-wheeler and the vehicle is more compact than a conventional four-wheeler. Such vehicles are also advantageously provided with a small sized power unit.
[0003] One of the primary features of such a vehicle is that the occupants of the vehicle including the rider are seated on a seating structure that allows the occupants to straddle or step-through to occupy the seat and are sans doors. The occupants are generally seated one behind the other, in some cases they are seated side by side. More often than not, such vehicles are exposed to atmosphere and are not enclosed in nature, and in several instances, do not contain a roof structure.

BRIEF DESCRIPTION OF THE DRAWINGS
[0004] The detailed description is described with reference to the accompanying figures.
[0005] Fig. 1 illustrates a step-through type vehicle, in accordance with an embodiment of the present subject matter.
[0006] Fig. 2 (A) illustrates a left side perspective view of a vehicle provided with a canopy structure, in accordance with an embodiment of the present subject matter.
[0007] Fig. 2 (B) depicts a left side perspective view of the vehicle shown in Fig. 2 (A) provided with a canopy structure, in accordance with another embodiment of the present subject matter.
[0008] Fig. 3 depicts another left side perspective view of the vehicle shown in Fig. 2 (B) provided with a canopy structure, in accordance with an embodiment of the present subject matter.
[0009] Fig. 4A depicts a left side perspective view of a vehicle provided with a canopy structure, in accordance with an embodiment of the present subject matter.
[00010] Fig. 4B illustrates a left side perspective view of a vehicle provided with a canopy structure, in accordance with an embodiment of the present subject matter.
[00011] Fig. 4C depicts a left side perspective view of a vehicle provided with a canopy structure, in accordance with another embodiment of the present subject matter.
[00012] Fig. 5 depicts one or more retractable portion detached from the vehicle and placed under sunlight in accordance with an embodiment of the present subject matter.

DETAILED DESCRIPTION
[00013] Several attempts have been made in the past to provide compact personal transportation vehicles such as two-wheelers with a roof like structure. However, such attempts have hardly been successful due to various technical limitations.
[00014] One such technical limitation being the bulkier configurations of roof like structures known in the existing art. Such bulkier configurations almost make a two-wheeled vehicle used for personal transportation look like a passenger car, which in turn adversely affects utility for the user as well as design flexibility for the designer. Further, such known configurations are much heavier and increase the position of the center of gravity of the vehicle from the ground level, due to a larger disposition of mass above the seating position of the vehicle. It is more applicable in case of vehicles provided with two or three wheels, which makes vehicle handling much more difficult. Moreover, such roof like structures provided on vehicles are generally provided for better safety of the rider & pillion from external weather conditions such as wind, dust, sun etc.. In the known art, such structures are generally made of combination of solar panels & support members which either run on complete solar energy or aid the powertrain and / or one or more loads of the vehicle.
[00015] Furthermore, existing vehicles which are provided with solar panel embedded roof structures are either formed as complete enclosures, which clearly make vehicle handling and vehicle manoeuvring difficult, or as extended visor like panels, which leads to various other problems including vibration of panels at high speed and fragile roof structure design without stable support. Further, in such vehicles, extension of solar panels throughout the enclosure including the front visor area towards the pillars supporting the roof structure can lead to poor corner visibility & accidents. Moreover, widening the pillar area in order to enhance the solar impedance area is also detrimental to safety as it may lead to obstructing or restricting the rider’s view. Furthermore, reducing the pillar area may lead to loss of solar impedance area around the front portion of the vehicle, which is detrimental too.
[00016] Other than the above stated problems, there are other important problems that are associated with the existing solar panel embedded roof structures. These include positioning of rear view mirror assemblies, which are often extended in vehicle widthwise direction, which leads to various safety concerns. Moreover, in many known configurations, the space available for the occupants including the rider and the pillion are often compromised for the sake of increasing area of solar panels in the vehicle. Such vehicles referred to as canopy type vehicles often deviate from the basic requirement of a personal transportation type vehicle like two-wheeler and often end up in increasing the complexity for the user for the sake of providing a roof structure.
[00017] Moreover, there exist several problems with respect to vehicles provided with roof-top solar panel structures. For instance, in the past, various attempts relating to providing covers and/or roofs made of solar cells have been made, especially in bigger automobiles such as passenger cars. For instance, conventionally a tarpaulin-based cover is known to contain a plurality of solar cells. Such tarpaulin covers helps in externally covering the car when not in use. However, the drawback with such solar powered tarpaulin covers is that they are a separate entity from the vehicle and need to be stowed when vehicle is to be used. Moreover, they tend to sag during prolonged usage due to its flexible nature, which may damage the solar cells disposed on the external surface.
[00018] In the past, attempts have also been made to address the above-described problem of sagging. For instance, solar cell covers were made to include intermediate structural members and elastic members at ends provided with solar cells. However, such structures are complicated and cumbersome to use. They still have to be manually unfolded and covered over the car.
[00019] The problem with the flexibility of covers with solar cells was overcome by fixed shields provided with solar cells. The fixed shield is electrically connected with the battery of the car enabling charging of the battery using solar power. However, such shields are still a separate entity from the vehicle itself and the use of such shields is cumbersome due to its odd shape and heavy structure. Moreover, the fixed shields may not completely cover all area e.g. corners of the car.
[00020] The problem associated with the cumbersome usage of the solar shields was overcome by automatic shields provided with solar cells, which includes flexible shields and other structural members to provide necessary rigidity. Such automatic shields are typically housed in a dedicated storage space usually provided at the rear of a car. However, such structures required dedicated storage in the vehicle, which may not be the case with all segments of automobiles especially compact saddle type two and three wheeled vehicles. Further, such structures also require dedicated mechanism for automatic unfolding and folding of the shield.
[00021] Also known are vehicles with portable solar shields. For instance, a known two-layer portable solar shield contains an outer layer with plurality of solar cells and an inner layer provided with a battery capable of being charged by the solar cells. Typically, such construction comes with an inbuilt pump used for inflating and deflating the solar shield. However, such structures are both complicated and difficult to manufacture and use.
[00022] The other known type of portable solar shields includes foldable solar panels, which has a construction to achieve folding and unfolding of the solar panels, for instance, a central shaft over which the solar panel is folded, a guide member over which the solar panels unfold and electrically controlled actuators, which enable folding and unfolding of the solar panels. As with the other portable solar shield, this type of construction is also cumbersome to use and involves a complex construction.
[00023] Further attempts were made to solve the problem with respect to handling of the solar panel covers for automobiles by using commonly known shape memory alloys on the flexible solar panels. However, usage of such flexible solar panels with shape memory alloys is restricted to the shape of a particular vehicle and hence cannot be used across all types of vehicles, especially vehicles with canopy that already has the necessity to balance and are not a cost effective solution. Thus, the dynamic requirements of such vehicles with canopy make it difficult to adapt structures with shape memory alloys. Further, such flexible solar panels with shape memory alloys are stored in a dedicated storage space upon folding. Hence, any such addition of storage space adds to the overall weight of the vehicle with canopy structure, which in turn affects the dynamics of the vehicle. Moreover, it is clear from the available technologies in the state of the art that almost all of the solutions provided including that of shape memory alloys, automatic folding mechanism leads to substantial increase in the cost of the vehicle. Hence, the solutions available in the state of the art cannot be considered as economically feasible solution to be implemented in vehicles provided with canopy structure.
[00024] Thus, there is a requirement of providing a solar panel for a vehicle with a canopy structure that overcomes all the above stated problems known in the prior art.
[00025] The present subject matter has been devised in view of the above circumstances as well as solving other problems of known art.
[00026] In an embodiment of the present subject matter, the present subject matter relates to a vehicle used for personal transportation with a portable canopy structure provided with solar panels.
[00027] As per an aspect of the present embodiment of the present subject, the canopy structure of the present subject matter includes a plurality of portions containing solar panels or array of photo voltaic cells embedded in the panel capable of receiving solar energy and charging an energy storage device. The plurality of portions containing solar panels includes a combination of one or more fixed portions and one or more flexible portions. Configuring the solar panel with split hybrid design portions viz. fixed and flexible portions enables maximum exposure area when both the fixed and flexible portions are employed, while minimum exposure area is achieved when only fixed portion is employed.
[00028] As per another aspect of the present embodiment of the present subject, the one or more fixed portions of the vehicle include a front structure, a rear structure and a top structure. The mounting member of the rear structure is a pillion handle. The top structure is one of the one or more fixed portions and present at the top of the vehicle, forming a roof type structure for the vehicle and includes plurality of solar panels. Further the top structure is made of a single piece connecting the front structure and the rear structure of the vehicle.
[00029] As per another aspect, the one or more flexible portions extend substantially sidewardly downwardly from the edges of the top structure of the vehicle. The one or more flexible portions include a plurality of solar panels.
[00030] As per another aspect, the one or more fixed portions of the plurality of portions includes a first portion acting as a cover member connecting the windshield member at a front end thereof and an upwardly extending second portion at a rear end thereof. The second portion is detachably attached to a mounting member of the rear structure.
[00031] As per another aspect, the fixed portion includes a cover member extending substantially horizontally rearwardly above a seat sub-structure. The cover member is capable of shielding occupants of the vehicle, for example, in the first configuration, from external environmental factors including wind, rainfall and snowfall.
[00032] As per another aspect of the present embodiment, the one or more flexible portions are capable of being detachably attached. The one or more flexible portions are in folded condition or detached when the vehicle is in operable condition.
[00033] As per another aspect of the present embodiment, the one or more flexible portions are in unfolded condition or attached with the one or more fixed portions when the vehicle is in inoperable condition.
[00034] As per another embodiment, the top structure is substantially dome shaped and provided with chamfered edges. In an alternative embodiment, the top structure is spheroid shaped without the edges being chamfered. In a further alternative embodiment, the top structure is spheroidal, for example half-egg shaped or elliptical profile. Further, in other alternative embodiments, the top structure is elliptical spheroid or egg shaped.
[00035] In another embodiment, the vehicle is an electric operated vehicle, wherein the power unit is an electric motor. In another embodiment, the vehicle is a hybrid vehicle, and the power unit includes an engine assembly and an electric motor.
[00036] In an embodiment, the one or more portions of the fixed portion include at least one portion acting as a backrest member extending substantially upwardly from a rearmost portion of the seat sub-structure.
[00037] In an alternate embodiment the one or more flexible portions are retractable and capable of being folded upwardly up to a predetermined full length substantially equal to length of the vehicle or completely and unfolded downwardly up to a predetermined length or completely manually or by automated means. In an alternate embodiment the one or more flexible portions include one or more sensors that restrict the downward movement of the one or more flexible portions when the vehicle is in operable condition.
[00038] In another embodiment, the plurality of portions viz., one or more fixed portions and one or more flexible parts is made of a light weight material selected from a group consisting of composite material like fiber reinforced plastic and polyacrylonitrile, aluminum, sheet metal and plastic.
[00039] In another embodiment, the one or more flexible portions is capable of being detached from the vehicle and the solar panels can produce solar power and charge a power source separately.
[00040] In an embodiment, the one or more flexible portions is capable of being foldably stowed inside a boxlike compartment, and the boxlike compartment is capable of being detachably attached to a mounting member of the rear structure of the vehicle. As per another embodiment the box like compartment wherein is an extended backrest structure of said vehicle.
[00041] In an embodiment, the box like compartment acts as a solar kit assembly capable of being detachably attached to the vehicle.
[00042] In an embodiment, the plurality of solar panels of the vehicle is capable of producing energy for auxiliary functions of the vehicle, thereby eliminating the need of an auxiliary battery of the vehicle.
[00043] These and other advantages of the present subject matter would be described in greater detail in conjunction with and embodiment of a saddle type two wheeled vehicle along with the figures in the following description. The present subject matter is further described with reference to accompanying figures. It should be noted that the description and figures merely illustrate principles of the present subject matter. Various arrangements may be devised that, although not explicitly described or shown herein, encompass the principles of the present subject matter. Moreover, all statements herein reciting principles, aspects, and examples of the present subject matter, as well as specific examples thereof, are intended to encompass equivalents thereof.
[00044] Fig. 1 illustrates a left side view of an exemplary vehicle 100, in accordance with an embodiment of the present subject matter. The vehicle 100 has a frame assembly 105 having a step-through type layout. The frame assembly 105 includes a head tube 105A, a main tube 105B extending downwardly rearward from the head tube 105A, and a pair of railing 105C that extend inclinedly rearward. A handlebar assembly 110 is mounted to a steering shaft (not shown). The steering shaft is rotatably supported by the head tube 105A. A front wheel 115 is connected to the handle bar assembly 110 through one or more front suspension(s) 120. A power unit 180 is swingably mounted to the frame assembly 105. In an embodiment, the power unit 180 is an engine functionally coupled to a rear wheel 125. In another embodiment, the power unit 180 is a motor, for example, a hub motor mounted on the hub of the rear wheel 125. In an alternative embodiment, the power unit 180 is a rotating shaft motor mounted on swinging portion, while in another alternative embodiment, the power unit 180 is a chassis mounted shaft rotating motor.
[00045] Further, the rear wheel 125 is connected to the frame assembly 105 through one or more rear suspension(s) 130. In an embodiment, the power unit 180 is swingably connected to the frame assembly 105 through a toggle link (not shown). A seat assembly 135, also interchangeably called as a seat sub-structure 135 is disposed upwardly of the power unit 180 and is supported by the pair of railings 105C. A storage compartment (not shown) provided below the seat assembly 135 are supported by the pair of railing(s) 105C. The utility box is accessible in an open condition of the seat assembly 135.
[00046] Furthermore, the vehicle 100 is provided with plurality of panels 140A, 140B, and 140C. A floorboard 145 is disposed at a step-through space defined by the frame assembly 105. The user can operate the vehicle by resting feet on the floorboard 145, in a sitting position. A front fender 150 is covering at least a portion of the front wheel 115. In the present embodiment, the front fender 150 is integrated with the panels 140A. A rear fender 155 covers at least a portion of the rear wheel 125. The front fender 150 and the rear fender 155 prevent splashing of dirt on to the vehicle parts and away from the vehicle 100. In one embodiment, a fuel tank (not shown) is supported by the frame assembly 105 and is functionally coupled to the engine assembly 180. The vehicle 100 comprises of plurality of electrical/electronic components including a headlight 160A, a tail light 160B, a battery (not shown), a transistor controlled ignition (TCI) unit (not shown), an alternator (not shown), a starter motor (not shown).
[00047] Fig. 2 (A) illustrates a left side perspective view of a vehicle 200-1 provided with a canopy structure, in accordance with an embodiment of the present subject matter. In an embodiment, the canopy structure of the vehicle 200 includes a plurality of portions containing solar panels 213 or array of photo voltaic cells embedded in the panel capable of receiving solar energy and charging an energy storage device. The plurality of portions containing solar panels 213 includes one or more fixed portions and one or more flexible portions. The one or more fixed portions of the vehicle 200 include a front structure 215, a rear structure 220 and a top structure 208. The top structure 208 extends between the front structure 215 and the rear structure 220 of the vehicle 200. In an embodiment, the top structure 208 is made of a single piece adaptable to be joined with a windshield structure 210, also called as a windshield member 210 of the front structure 215 at a front end thereof. Similarly, in an embodiment, the top structure 208 is adaptable to be joined with an extended backrest structure 206, extending upwardly rearward from a top portion of a backrest structure 204, also called as a backrest member 204 of the rear structure 220 of the vehicle 200.
[00048] As per another embodiment, the top structure 208 is substantially dome shaped and provided with chamfered edges. In an alternative embodiment, the top structure is spheroid shaped without the edges being chamfered. In a further alternative embodiment, the top structure 208 is spheroidal, for example half-egg shaped or elliptical profile. Further, in other alternative embodiments, the top structure 208 is elliptical spheroid or egg shaped.
[00049] As per another aspect, the said one or more fixed portions of the plurality of portions includes a first portion (not shown) acting as a cover member connecting the windshield structure 210 at a front end thereof and an upwardly extending second portion (not shown) at a rear end thereof. The second portion (not shown) is detachably attached to a mounting portion 302 of the rear structure 220. As per another aspect, the one or more fixed portions include a cover member extending substantially horizontally rearwardly above a seat sub-structure 135. The cover member (not shown) is capable of shielding occupants of the vehicle 200, for example, in the first configuration, from external environmental factors including wind, rainfall and snowfall.
[00050] In an embodiment, the windshield structure 210 includes a visor capable of shielding a rider of the vehicle 200 from wind and sunlight, which otherwise obstructs the rider from maneuvering ahead with ease. In one embodiment, the top structure 208 is joined to the extended backrest structure 206 by means of one or more couplers 212, which apart from providing a rigid joint at the ends also enhances ease of assembly and disassembly. In an embodiment, the extended backrest structure 206 of the rear structure 220 is provided with a transversely extending head rest portion 285, which allows a pillion rider to comfortably rest his/her head during ride. The rear structure 220 includes a mounting member 302 capable of receiving one or more portions of said rear structure 220. In an embodiment, the backrest structure 204 and the extended backrest structure 206 are aligned in order to ergonomically support the seating position of the pillion rider. In an alternative embodiment, the top structure 208 is enmolded with the front structure 215 and the rear structure 220.
[00051] Fig. 2 (B) depicts a left side perspective view of the vehicle shown in Fig. 2 (A) provided with a canopy structure, in accordance with another embodiment of the present subject matter. As per this embodiment, the vehicle 200 has a top structure 208 that is dome shaped. In an embodiment, the top structure 208 of the vehicle 200 is oval shaped when viewed from the top. Further, in one embodiment, the top structure 208 is embedded with a plurality of solar panels 213 In an embodiment, the top structure 208 is rounded at all corners extending forwardly to join with the windshield structure 210 of the front structure 215 (shown in Fig. 2A), and extending rearwardly to join with the extended backrest structure 206 of the rear structure 220. In an embodiment, the plurality of solar panels 213 are disposed uniformly across an upper surface of the top structure 208 extending forwardly and downwardly to a front most portion 275 and extending sidewardly and downwardly to a sideward portion 280. In an embodiment, the sideward portion 280 of the plurality of solar panels 213 is substantially perpendicular to the angle of incidence of sunlight allowing maximum exposure to sunlight during all positions of sun in a day. In another embodiment the sideward portion 280 is one of the one or more fixed portions of the vehicle 200. An outer surface area 223 of the sideward portion of the panel ranges from 5% to 50% of the outer surface area of the top structure 208 In an embodiment, the top structure 209 includes at least one pillion handle 270 disposed downwardly from its side surface 295 (shown in Fig. 3) allowing the pillion to hold during riding condition.
[00052] Fig. 3 depicts another left side perspective view of the vehicle 200 shown in Fig. 2 (B) provided with a canopy structure, in accordance with another embodiment of the present subject matter. In an embodiment, the plurality of solar panels 213 (shown in Fig. 2(A)) embedded to the upper surface of the top structure 208 are uniformly distributed such that a square unit 305, for example of a size of one square centimetre of the plurality of solar panels 213, is capable of generating approximately 6 to 16 milliwatts of power per square centimetre . In an embodiment, the plurality of solar panels 213 are closely spaced apart from each other uniformly across the dome shaped top structure 208. In another embodiment, the plurality of solar panels 213 are more densely stacked at the top structure 208, while are not as densely stacked extending forwardly towards the front most portion 275 and a corresponding rearwardly disposed rear most portion (not shown). In one embodiment, the plurality of solar panels 213 stacked in the sideward portion 280 (shown in Fig. 2B) extending downwardly to a side most portion 295 is substantially higher as compared to the plurality of solar panels stacked forwardly extending towards the front most portion 275 and the corresponding rear most portion.
[00053] In an embodiment, the front most portion 275 of the plurality of solar panels 213 are so disposed on the top structure 208 that the positioning of the solar panels 213 do not substantially affect a cone of vision 290 of the rider at any point of time during the ride. In an embodiment, the front most portion 275 is disposed such that the line of vision of the rider ranges in a cone angle O from approximately 0° to 10°. In another embodiment, the front most portion 275 can extend downwardly to a maximum predetermined position up to which the line of vision 290 of the rider remains unaffected, for example in a cone angle O ranging approximately between 10° to 30°. In an alternative embodiment, the top structure 208 of the vehicle 200 can be of any other shape other than a spheroidal, dome or oval shape, which provides a similarly enhanced area of exposure of the plurality of solar panels 213 to sunlight at any point of time during the day or any other incident light. In an embodiment, the top structure 208 protects the rider and the pillion from direct exposure to sunlight at all time of the day. Similarly, the vehicle 200 of the present subject matter is a green vehicle capable of utilizing the power generated by the plurality of solar panels 213 to power various loads of the vehicle 200. In an embodiment, the vehicle 200 provides an eco-friendly personal transportation means for the user, which generates less pollutants.
[00054] Fig. 4A depicts a left side perspective view of a vehicle 200 provided with a canopy structure, in accordance with another embodiment of the present subject matter. In this embodiment, the top structure 208 of the vehicle 200 is enmolded with the front structure 215 (shown in Fig. 2A) and the rear structure 220 (shown in Fig. 2A). In one embodiment, the top structure 208 of the present subject matter is made of a light weight material selected from a group consisting of composite material like fiber reinforced plastic and polyacrylonitrile, aluminum, sheet metal and plastic. In an embodiment, the canopy structure of the present subject matter includes a plurality of portions containing solar panels 213 (shown in Fig. 2A) or array of photo voltaic cells embedded in the panel capable of receiving solar energy and charging an energy storage device. The plurality of portions containing solar panels 213 includes one or more fixed portions and one or more flexible portions 332, also called as a retractable member 332. The splitting of solar panel 213 portions into fixed and flexible portions enables maximum exposure area when both the fixed and flexible portions are employed, while minimum desirable exposure area is achieved when only fixed portion is employed. In an embodiment, the one or more retractable member 332 includes a left most region 320 of the retractable member 332 and a right most region (325) of the retractable member 332 of the vehicle 200.. The one or more retractable members 332 is capable of extending substantially sidewardly downwardly from the edges of the top structure 208 of the vehicle 200 including a plurality of solar panels 213. The one or more retractable members 332 are capable of being detachably attached from the edges of the top structure 208 of the vehicle 200. The one or more retractable members 332 are retractable and capable of being folded upwardly and unfolded downwardly manually or by automated means. The one or more retractable member 332are in folded condition or detached when the vehicle 200 is in operable condition. The one or more retractable member 332are in unfolded condition up to a predetermined length L and attached with the one or more fixed portions for example, the top structure 208 when the vehicle 200 is in operable condition. The one or more retractable member 332are in completely unfolded condition and attached with the one or more fixed portions for example, the top structure 208 when the vehicle 200 is in inoperable condition. The one or more flexible retractable member 332 include one or more sensors (not shown) that restrict the downward movement of the one or more retractable member 332 from a predetermined length L or from complete unfolded condition, when the vehicle 200 is in operable condition. In this present embodiment the one or more retractable member 332 are in half folded state, or are of a length which reaches up to an lower end portion of extended backrest structure 206 of the vehicle 200, towards the backrest member 204 up to the predetermined length L of the vehicle 200.
[00055] Fig. 4B illustrates a left side perspective view of a vehicle 300-1 provided with a canopy structure, in accordance with another embodiment of the present subject matter. In this embodiment, the one or more retractable members 332 are in half folded state, or are of a length which reaches up to an end portion of extended backrest structure 206 (shown in Fig. 2A) of the vehicle 200, towards the backrest member 204 up to the predetermined length L of the vehicle 200. The one or more retractable members 332 include a plurality of solar panels 213. The plurality of solar panels 213 embedded to the upper surface of the top structure 208 is uniformly distributed such that a square surface area unit 305, for example of a size of one square centimetre of the plurality of solar panels 213, is capable of generating approximately 6 to 16 milliwatts of power per square centimetre. In an embodiment, the plurality of solar panels 213 are closely spaced apart from each other uniformly across the one or more flexible portions 332.
[00056] Fig. 4C depicts a left side perspective view of a vehicle 200 provided with a canopy structure, in accordance with another embodiment of the present subject matter. In this embodiment, the one or more retractable members 332 are in unfolded condition or attached with the one or more fixed portions, for example, edges of the top structure 208, when the vehicle 200 is in inoperable or parked condition. The one or more retractable members 332 are capable of being unfolded downwardly completely manually or by automated means. The plurality of solar panels 213 embedded to the upper surface of the top structure 208 is uniformly distributed such that a square surface area unit 305, for example of a size of one square centimetre of the plurality of solar panels 213, is capable of generating approximately 6 to 16 milliwatts of power per square centimeter. In an embodiment, the plurality of solar panels 213 are closely spaced apart from each other uniformly across the one or more flexible portions 332.
[00057] Fig. 5 depicts one or more retractable members 332 detached from the vehicle 200 and placed under solar rays 335 in accordance with an embodiment of the present subject matter. In an embodiment, the one or more retractable members 332 including plurality of solar panels 213, is capable of being directly placed under the solar rays 335 or any other source light energy radiation and desirable intensity in order to enable it to produce solar power and at the same time charge a power source (not shown) by means of a charging means 330. As per another embodiment the one or more retractable members 332 is capable of being foldably stowed inside a boxlike compartment (not shown), and the boxlike compartment is capable of being detachably attached to a mounting member 302 (shown in Fig. 2A) of the rear structure 220 (shown in Fig. 2A) of the vehicle 200.
[00058] In an embodiment, the box like compartment acts as a solar kit assembly capable of being detachably attached to the vehicle 200.
[00059] In another embodiment the boxlike compartment, is an extended backrest structure 206 of the vehicle 200.
[00060] In another embodiment, the vehicle 200 is an electric operated vehicle, wherein the power unit is an electric motor. In another embodiment, the vehicle 200 is a hybrid vehicle, and the power unit includes an engine assembly and an electric motor.
[00061] Many modifications and variations of the present subject matter are possible within the spirit and scope of the present subject matter, in the light of above disclosure.

LIST OF REFERENCE NUMERALS

100, 200: Vehicle
105: Frame assembly
105A: Head tube
105B: Main tube
105C: Pair of railing
110: Handle
115: Front wheel
120: Front suspension(s)
125: Rear wheel
130: Rear suspension(s)
135: Seat assembly
140A, 140B, 140C: plurality of panels
145: Floorboard
150: Front fender
155: Rear fender
160A: Headlight
160B: Tail light
180: Power unit
204: Backrest structure/ member
206: Extended backrest structure
208: Top structure
210: Windshield structure/ member
212: Couplers
213: Solar panel
215: Front structure
220: Rear structure
223: Outer surface area
275: Front most portion
280: Sideward portion
285: Head rest portion
290: Line of vision
295: Side surface
302: Mounting portion
305: Square unit
320: Leftmost region
325: Rightmost region
332: Reractable member
330: Charging means
335: Solar rays