CN113715631A - Expandable solar power generation device for vehicle and vehicle roof - Google Patents

Expandable solar power generation device for vehicle and vehicle roof Download PDF

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Publication number
CN113715631A
CN113715631A CN202110905154.5A CN202110905154A CN113715631A CN 113715631 A CN113715631 A CN 113715631A CN 202110905154 A CN202110905154 A CN 202110905154A CN 113715631 A CN113715631 A CN 113715631A
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CN
China
Prior art keywords
solar
vehicle
power generation
panel
cover plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110905154.5A
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Chinese (zh)
Inventor
唐爱平
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202110905154.5A priority Critical patent/CN113715631A/en
Publication of CN113715631A publication Critical patent/CN113715631A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L8/00—Electric propulsion with power supply from forces of nature, e.g. sun or wind
    • B60L8/003—Converting light into electric energy, e.g. by using photo-voltaic systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K16/00—Arrangements in connection with power supply of propulsion units in vehicles from forces of nature, e.g. sun or wind
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/04—External Ornamental or guard strips; Ornamental inscriptive devices thereon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D35/00—Vehicle bodies characterised by streamlining
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00—Supporting structures for PV modules
    • H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S30/00—Structural details of PV modules other than those related to light conversion
    • H02S30/20—Collapsible or foldable PV modules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K16/00—Arrangements in connection with power supply of propulsion units in vehicles from forces of nature, e.g. sun or wind
    • B60K2016/003—Arrangements in connection with power supply of propulsion units in vehicles from forces of nature, e.g. sun or wind solar power driven
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/82—Elements for improving aerodynamics
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/90—Energy harvesting concepts as power supply for auxiliaries' energy consumption, e.g. photovoltaic sun-roof

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Power Engineering (AREA)
  • Photovoltaic Devices (AREA)

Abstract

The invention discloses an improvement of a Chinese patent with an authorization publication number of CN211223057U, and provides an expandable solar power generation device for a vehicle, which comprises a bracket, a cover plate, a plurality of movable solar panels and a driving device for driving the movable solar panels to slide; when the power generation device is in a retracted state, the movable solar cell panel is stacked below the cover plate, the cover plate plays a role in protection, and when the power generation device is in an extended state, the movable solar cell panel can extend out of the bracket and the cover plate; the roof comprises a solar cell power generation device for the vehicle, wherein the device is fixedly arranged on the roof, and a cover plate is used as a roof plate; the power generation device can be unfolded when the vehicle is parked, so that the solar power generation capacity is improved, and a sun shading effect can be achieved; compared with the original patent, the wind resistance of the automobile is reduced, the power generation device is effectively protected, the risk of falling off when the automobile runs is avoided, the potential safety hazard is eliminated, the device is easy to maintain, and the service life is longer.

Description

Expandable solar power generation device for vehicle and vehicle roof
Technical Field
The disclosure relates to the photovoltaic field and the automobile accessory field, in particular to an expandable solar power generation device for a vehicle and a vehicle roof.
Background
The electric automobile is continuously popularized, fossil energy is reduced, solar energy which is clean energy is utilized to the maximum extent, and the main problem to be solved by a vehicle-mounted solar energy system is solved. Chinese patent No. CN206968786 discloses an expandable solar roof apparatus and a roof, which increases the area of available sunlight, but has the following problems: the solar panel on the roof of the device is not protected by a cover plate, so hail or stones flying on the road can damage the solar panel; when the automobile is parked outdoors for a long time, the device is not sealed with the atmosphere, and various gum dusts of fallen leaves and fallen flowers can be bonded on the solar panel, so that the power generation efficiency is greatly reduced; the device is arranged on the roof and cannot be integrated with the roof, so that large wind resistance is added to the automobile; the device sets up on the roof, bears very big wind pressure when the car is gone, has the risk that drops, leads to the device to damage and brings the potential safety hazard.
Disclosure of Invention
The utility model aims to solve the problems that the wind resistance of the automobile is increased after the solar panel on the roof is not protected and covered and the solar power generation device is added, and the device falls off to cause device damage and potential safety hazard when the automobile runs, and the like, and the following technical scheme is provided in the disclosure:
an expandable solar power generation device for a vehicle comprises a bracket, one or more movable solar panels connected with the bracket in a sliding manner, and a driving device capable of driving the movable solar panels to slide; the solar panel support is characterized by also comprising a cover plate fixed on the support, wherein the cover plate is positioned at the topmost layer and used for protecting the solar panel and the support below and constructing the shape; the cover plate is provided with a slender opening, and the movable solar cell panel can slide out of the opening; when the solar cell power generation device for the vehicle is in a retracted state, the movable solar cell panel is stacked and positioned below the cover plate; when the solar cell power generation device for the vehicle is in an unfolded state, one or more movable solar cell panels extend out of the bracket and the cover plate.
Optionally, the drive means comprises a slide rail, a rigid frame; the solar panel is arranged in the rigid frame, if the whole rigid solar panel is used and has enough strength, an additional rigid frame is not needed, and the solar panel is directly used as the rigid frame; the two sides of the rigid frame are provided with sliding rails, the corresponding sliding rail parts are arranged on the supports, the rigid frame can slide in and out on the supports, and people can manually pull out or send back the frame.
Optionally, the driving device comprises a slide rail, a rigid frame, a rack and a driving gear; the solar panel is arranged in the rigid frame, if the whole rigid solar panel is used and has enough strength, an additional rigid frame is not needed, and the solar panel is directly used as the rigid frame; the two sides of the rigid frame are provided with slide rails, the corresponding slide rail parts are arranged on the support, and the rigid frame can slide in and out on the support; the driving gear comprises a gear and a motor, a rack is arranged on the rigid frame, the driving gear is arranged on the support, the driving gear is meshed with the rack, and the frame can be driven by electric power to slide in or slide out.
Optionally, when automobile-used solar cell power generation facility is in the state of packing up, the portion that the apron covers solar panel adopts transparent toughened glass to make, and toughened glass is fit for making streamlined shape, reduces the windage, can also pass through the printing opacity, and its lower part topmost movable solar panel need not the roll-off can generate electricity, also can generate electricity when driving promptly, can perceive the power of sunlight according to the generated energy of this solar panel to can decide whether to let other movable solar panel stretch out according to the power of sunlight.
Optionally, the movable solar cell panel can slide out from 1 direction or 2 directions or 3 directions or four directions of front, back, left and right 4 directions of the support, each direction can slide out from 1 to the multilayer board, when the movable solar cell panel slides out of the multilayer board, the length of the slide rail on each layer is different, and the sliding solar cell panels are not covered with each other; when parking, the 1-2 layer plate can slide out from the side of the automobile to be used as a sunshade.
Optionally, a decorative strip is arranged on the outer side of the movable solar cell panel, and when the automotive solar cell power generation device is in a retracted state, the decorative strip seals the opening of the cover plate.
Optionally, still include breather, when using transparent toughened glass apron, can produce the heat when the solar panel electricity generation of its lower part, through the cooling of breather.
A vehicle roof comprises the deployable solar power system for a vehicle as described above, the system being fixedly mounted on the vehicle roof, the cover being engaged with the vehicle body, the cover acting as a roof panel.
The invention has the following beneficial effects:
the cover plate of the device is connected with the vehicle body, the device is integrated with the vehicle roof, the cover plate and the decorative strip can be constructed into the most suitable shape, the wind resistance of the vehicle is reduced, and the wind resistance of the vehicle is important for reducing energy consumption; all solar panels are sealed by the cover plate and the automobile body, so that the solar panels are well protected, the automobile does not need to worry about falling off when running, and potential safety hazards do not exist; all solar panel are the fly leaf, all can extend out, change, maintain, and it is more convenient to clear up, and weather is not good or when the overhead has the junk, can receive again, maintains to save worry, and life is longer.
Drawings
FIG. 1 is a schematic side view of a deployable solar power plant and roof for a vehicle;
FIG. 2 is a schematic bottom view of the deployable solar power plant for a vehicle;
the description of the reference numerals,
1. a cover plate (the part covering the solar panel 20 is made of transparent toughened glass);
20. a first movable solar panel (comprising a frame); 21. a second movable solar panel (comprising a frame); 22. a third movable solar panel (comprising a frame); 22. a movable solar panel four (comprising a frame); 22. a movable solar panel five (comprising a frame);
31. a rack; 32. a driving gear (including a gear and a motor);
4. a slide rail;
5. a support;
6. a movable frame (rigid aluminum alloy frame);
7. decorating strips;
8. an insulating panel.
Detailed Description
The specific embodiments are merely illustrative of the disclosure and are not intended to be limiting of the disclosure.
In the present disclosure, directional terms such as "front", "rear", "left", "right" and "front", "rear", "left", "right", if not specifically designated, are used to refer to the front, rear, left and right directions of a person when the person is seated in a vehicle facing the direction of the vehicle head.
An expandable solar power generation device for a vehicle is shown in fig. 1 and fig. 2, and includes a bracket 5, a cover plate 1 (a part covering a solar panel 20 is made of transparent tempered glass), which is fixedly arranged on the bracket 5, a movable solar panel (20, 21, 22, 23, 24) slidably connected with the bracket 5, and a driving device for driving the movable solar panel to slide; the cover plate is provided with a slender opening, and the movable solar cell panel can slide out of the opening; note that fig. 2 is a top view, with four solar panels of different heights; figure 2 does not show the uppermost active solar panel 20 which can slide out to the right as does the panel 22, but the panel does not need to slide out to generate electricity because the cover panel is light-transmissive and only slides out when replacing or maintaining the solar panel.
The deployable solar power generation device for the vehicle is fixedly arranged on the top of the vehicle body through a bracket 5 of the deployable solar power generation device. The movable solar cell panel can slide back and forth and back and left and right in 4 directions to slide out of/into the bracket 5 and the cover plate 1, when the movable solar cell panel is positioned in the bracket 5, the movable solar cell panel is in a laminated state, the vehicle-used expandable solar power generation device is in a retracted state, the cover plate is made of transparent toughened glass, the solar panel 20 can receive light and generate electricity, and the vehicle-used expandable solar power generation device only shields the position of the roof of a vehicle and does not influence the driving visual field; after the 4 movable solar panels slide out of the bracket 5, the vehicle-used expandable solar power generation device is in an expanded state, all the movable solar panels can effectively receive light to generate power, the effective light receiving area is increased by 4 times, and the generated energy is greatly improved.
The rear portion of the cover plate 1 is provided with a rainproof exhaust port for ventilation and cooling inside the support, so that the reduction of the power generation efficiency caused by the overhigh temperature of the movable solar panel 20 is avoided.
In the first embodiment, as shown in fig. 2, the driving device includes a rigid frame 6, a slide rail 4, a rack 31, and a driving gear 32. The drive gear 32 is composed of a gear and a motor. The slide rail 4 is composed of two rails engaged with each other to slide. The rigid frame is a rigid aluminum alloy frame, one side of the rigid frame is provided with a decorative strip 7 and an embedded handle, the side is used as the outer side, a semi-flexible solar panel is arranged in the rigid frame, the thickness is very thin (about 3 millimeters), the weight is light, and the rigid frame is suitable for large-area use.
One rail of the sliding rail is fixedly connected with the support 5, the other rail is installed at the edge of the rigid frame, a group of sliding rails are respectively arranged on two sides of the rigid frame, the frame is rigid, the frame only needs to be driven on one side (the driving on two sides involves the synchronization problem), the rack 31 is installed on the rail on the driving side, the driving gears 32 are arranged on four corners of the support, and the driving gears 32 are meshed with the rack 31. The rigid frame can slide in and out on the slide rails as the drive gear 32 rotates.
The decorative strip 7 is used for sealing the opening of the cover plate 1 and constructing an outer contour curve of the cover plate to reduce wind resistance.
In the second embodiment, the rack 31 and the driving gear 32 are removed, the motor drive is changed into manual drive, and the embedded handle on the rigid frame is pulled by hands, so that the solar panel can be pulled out or sent back.
In the third embodiment, as in the first embodiment, only the rigid frame is removed, and the whole rigid solar panel is directly used as a movable frame, a sliding rail, a rack, a decorative strip, an embedded handle and the like and is directly installed on the rigid solar panel.
In the fourth embodiment, like the third embodiment, only the rack 31 and the driving gear 32 are removed, the motor drive is changed into manual drive, and the embedded handle on the rigid solar panel is pulled by a hand, so that the solar panel can be pulled out or sent back.
In the fifth embodiment, like the first embodiment, a movable solar panel six is additionally arranged below the movable solar panel 22, corresponding sliding rails, racks, driving gears, decorative strips, handles and the like are additionally arranged, the solar panel six and the solar panel 22 slide out in the same direction, but the sliding rails are multi-section sliding rails, the length of the sliding rails is doubled, the sliding rails can slide out of the solar panel 22 and are not covered by each other, and therefore the solar panel can slide out of 2 layers of solar panels in one direction, more light receiving areas are obtained, and the solar panel is more suitable for being used as a sunshade.
Example six: as shown in fig. 1, a roof includes a heat insulating panel 8 and the solar cell power generation device for a vehicle described above, the device is fixedly provided on the heat insulating panel, a cover plate of the device is joined to a vehicle body, and the cover plate functions as a roof panel.

Claims (8)

1. An expandable solar power generation device for a vehicle comprises a bracket, one or more movable solar panels connected with the bracket in a sliding manner, and a driving device capable of driving the movable solar panels to slide; the method is characterized in that: the solar panel support is characterized by also comprising a cover plate fixed on the support, wherein the cover plate is positioned at the topmost layer and used for protecting the solar panel and the support below and constructing the shape; the cover plate is provided with a slender opening, and the movable solar cell panel can slide out of the opening; when the solar cell power generation device for the vehicle is in a retracted state, the movable solar cell panel is stacked and positioned below the cover plate; when the solar cell power generation device for the vehicle is in an unfolded state, one or more movable solar cell panels extend out of the bracket and the cover plate.
2. The deployable solar power unit for vehicles of claim 1, wherein: the driving device comprises a slide rail and a rigid frame; the solar panel is arranged in the rigid frame, if the whole rigid solar panel is used and has enough strength, an additional rigid frame is not needed, and the solar panel is directly used as the rigid frame; the two sides of the rigid frame are provided with slide rails, the support is provided with corresponding slide rail parts, and the rigid frame can slide in and out on the support.
3. The deployable solar power unit for vehicles of claim 1, wherein: the driving device comprises a sliding rail, a rigid frame, a rack and a driving gear; the solar panel is arranged in the rigid frame, if the whole rigid solar panel is used and has enough strength, an additional rigid frame is not needed, and the solar panel is directly used as the rigid frame; the two sides of the rigid frame are provided with slide rails, the corresponding slide rail parts are arranged on the supports, and the rigid frame can slide in and out on the supports; the driving gear comprises a gear and a motor, a rack is attached to the rigid frame, the driving gear is installed on the support, the driving gear is meshed with the rack, and the frame can be driven by electric power to slide in or slide out.
4. The deployable solar power unit for vehicles of claim 1, wherein: when the solar cell power generation device for the vehicle is in a retracted state, the part of the cover plate covering the solar panel is made of transparent toughened glass.
5. The deployable solar power unit for vehicles of claim 1, wherein: the movable solar cell panel can slide out from 1 direction or 2 directions or 3 directions or four directions of front, back, left and right, and 4 directions of the support, and each direction can slide out from 1 to the multilayer board.
6. The deployable solar power unit for vehicles of claim 1, wherein: the outer side of the movable solar cell panel is provided with a decorative strip, and when the solar cell power generation device for the vehicle is in a retracted state, the decorative strip seals an opening of the cover plate.
7. The deployable solar power unit for vehicles of claim 1, wherein: also comprises a ventilation device.
8. A vehicle roof, characterized by: the vehicle deployable solar power generation device as claimed in any one of claims 1 to 7, further comprising a roof panel, wherein the device is fixedly arranged on the roof of the vehicle, and the roof panel is used as the roof panel.
CN202110905154.5A 2021-08-08 2021-08-08 Expandable solar power generation device for vehicle and vehicle roof Pending CN113715631A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110905154.5A CN113715631A (en) 2021-08-08 2021-08-08 Expandable solar power generation device for vehicle and vehicle roof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110905154.5A CN113715631A (en) 2021-08-08 2021-08-08 Expandable solar power generation device for vehicle and vehicle roof

Publications (1)

Publication Number Publication Date
CN113715631A true CN113715631A (en) 2021-11-30

Family

ID=78675256

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110905154.5A Pending CN113715631A (en) 2021-08-08 2021-08-08 Expandable solar power generation device for vehicle and vehicle roof

Country Status (1)

Country Link
CN (1) CN113715631A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114684283A (en) * 2022-04-15 2022-07-01 石家庄兵甲堂高科技有限公司 But delivery vehicle's operation robot

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114684283A (en) * 2022-04-15 2022-07-01 石家庄兵甲堂高科技有限公司 But delivery vehicle's operation robot

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