Abstract:
The present invention relates to a multifunctional panel assembly, and a vehicle, an electronic product and a building using the same, and more particularly to a multifunctional panel assembly that enables panels having various functions to be selectively mounted on all items or objects each having an inside or outside mounting surface and then allows the various functions to be performed concurrently. The multifunctional panel assembly includes one or more of the functions of: 1) protecting an inside or outside surface on which a panel has been mounted, 2) providing visibility, 3) improving an aesthetic effect, 4) generating power, 5) providing a large amount of image and sound information to an observer, 6) acquiring and displaying a large amount of image and sound data, 7) maximizing the ease of mounting, and 8) restoring overall functionality without replacement or repair of an overall device.

Description:
FIELD OF THE DISCLOSURE 
       [0001]    The present invention relates to a multifunctional panel assembly, and a vehicle, an electronic product and a building using the same, and more particularly to a multifunctional panel assembly that enables panels having various functions to be selectively mounted on all items or objects each having an inside or outside mounting surface, such as a vehicle, a vessel, an aircraft, various types of electronic products, a building, etc., and then allows the various functions to be performed, and also to a vehicle, an electronic product, and a building using the same. 
       BACKGROUND OF THE DISCLOSURE 
       [0002]    Generally, various technical solutions for inside and outside surface decals, which are used for decoration with various designs so as to protect a corresponding outside surface, to indicate the name or grade of a product, and to improve visibility, discrimination or an aesthetic effect, have been applied onto items and objects each having a specific shape, including transportation machinery such as a vehicle, a vessel, an aircraft, etc., electronic devices, buildings, etc., for example, an outside surface of a vehicle body, a door or the like. 
         [0003]    For example, these functions are implemented by directly applying a paint having a color different from the color of an outside surface, applying a pattern having a specific shape onto an outside surface through attachment of sticker-type film paper, or semi-permanently mounting a plastic panel. 
         [0004]    However, when the conventional painting, the attachment of a sticker, or the semi-permanent attachment of a panel is applied, problems arise in that separation, removal and detachment are difficult after application and reuse is impossible even when separation or removal is possible. Furthermore, a problem arises in that the outside surface may be also deteriorated or damaged due to the deterioration of applied paint and sticker adhesive in the case of separation or removal. 
         [0005]    These technical problems result in the problem of limiting the convenience of use that allows a design to be changed, modified, and attached and detached at a desired time according to the intention and need of a user. 
         [0006]    Furthermore, a solar panel is constructed by adding electric wires into unit cells, each configured by forming a phosphorous N-type diffusion layer on phosphorous P-type silicon, through screen printing, constructing solar cells through attachment of an array of the unit cells onto a tempered glass film, coating the solar cells with a resin sealing and a protective film, and surrounding the coated solar cells with a metal frame. 
         [0007]    Such a solar panel is used to be provided on the roof of a house or an apartment building or the outside of a transportation means, such as a vehicle, and generate power using solar light or solar heat. 
         [0008]    However, the conventional solar panel has: the problem of being difficult to attach and detach because the conventional solar panel is permanently or semi-permanently attached to the outside surface of the vehicle body of a transportation means including a vehicle or the like; the problem of limiting decoration with various designs because the conventional solar cell is designed in a simple plane structure; the problem of suffering from difficulty in being formed to have a curvature because the conventional solar panel is configured in the form of a plane having a predetermined area or more; and the problem of replacing an overall module when part of the module has been damaged because each module of the solar panel is configured in an integrated form after electrical connection. 
         [0009]    Meanwhile, a display device is generally used in the state of standing on a surface of a certain object, or in the state of having been attached onto a structure including a larger wall surface by means of separate equipment. 
         [0010]    As an example, a display device provided on the inside or outside of a transportation means including a vehicle is a device embedded or attached in or onto the dashboard itself of a vehicle or at a location adjacent to the dashboard, and provides various types of analog and digital information, such as vehicle travelling information, machine information, etc., to a driver and a passenger. 
         [0011]    Alternatively, advertisements provided on the outsides of vehicle bodies generally represent specific information and produce advertising effects by using: a method of attaching an image, transferred to a flexible object such as paper, cloth or vinyl tape, or the like, onto an outside surface of a vehicle through adhesion; a method of disposing a light source, such as a LED or the like, in a structure having a specific shape and semi-permanently mounting the structure on an outside of a vehicle (the roof or the like of the vehicle), thereby displaying desired information, such as a character and color signal or the like, in all directions; or a method of placing such a light source inside a transparent or translucent box having a specific design pattern on a surface thereof and projecting the pattern to the outside by means of light emitted from the light source. 
         [0012]    However, the conventional display devices are limited in that: it is difficult for a user to mount such a conventional display device on an inside or outside surface of a transportation means including a vehicle; easily mountable display devices are restricted to devices having small size and low weight; a display device that has a size similar to that of the dashboard of a vehicle and can be easily attached to and detached from an inside or outside surface of a vehicle or a structure has not been implemented; and it is difficult to efficiently transfer a large analog or digital information image varying over time to an observer inside or outside a vehicle. 
         [0013]    Meanwhile, there has not been commercialized a panel-type device that is capable of selectively or concurrently performing one or more of various functions, i.e., the functions of: protecting an inside or outside surface on which a panel has been mounted; providing visibility and discrimination; improving an aesthetic effect; generating power using received solar light: providing a large amount of image and sound information to an observer through display when required; acquiring and displaying a large amount of image and sound data; maximizing the ease of mounting; and restoring overall functionality without replacement or repair of an overall device through the replacement of only a damaged portion when part of a solar panel has been damaged or a partial function has been lost. 
         [0014]    Furthermore, a panel assembly, including a panel having such a function convergence characteristic and a mounting mechanism, has not been applied to the surfaces of items or objects, including not only a transportation means such as a vehicle, etc. but also, for example, the bodies of various types of electronic products such as a microwave oven, etc., a wall, ceiling and partition of a building, etc. 
       PRIOR ART 
       [0015]    (Patent document 1) Korean Patent Application Publication No. 10-2006-0023352 
       SUMMARY 
     Technical Problem 
       [0016]    Accordingly, the present invention is intended to overcome the above-described problems, and an object of the present invention is to: provide a multifunctional panel assembly that can protect an inside or outside surface on which a panel has been mounted, can provide visibility and discrimination, can improve an aesthetic effect, can generate power using received solar light, can provide a large amount of image and sound information to an observer through display when required, can acquire a large amount of image and sound data, can maximize the ease of mounting, and can restore overall functionality without replacement or repair of an overall device through the replacement of only a damaged portion when part of a solar panel has been damaged or a partial function has been lost: and provide a vehicle, an electronic product and a building using the same. 
         [0017]    It will be clearly appreciated by those having ordinary knowledge based on the following description that technical problems that the present invention is intended to overcome are not limited or restricted to the above-described technical problem, but other technical problems in the art to which the present invention pertains are included in the spirit of the above-described technical problems. 
       Technical Solution 
       [0018]    In order to accomplish the above object, according to a first embodiment of the present invention, there is provided a multifunctional panel assembly, including: a multifunctional panel; a mounting surface configured such that the panel is seated thereon; a fastening unit configured to be fastened onto a fastening surface adjacent to the mounting surface; a connection portion configured to couple the panel to the fastening unit; and a grip portion provided on one end of the connection portion, and configured to grip the panel. 
         [0019]    The fastening unit may include: an introduction hole configured such that the other end of the connection portion is introduced thereinto; and a fastening hole configured such that the other end of the connection portion introduced into the introduction hole is snap-fitted thereinto. 
         [0020]    The connection portion may include: a flexible connection member made of an elastic or flexible material, and configured to be introduced into the introduction hole; and a fastening hook provided at the other end of the flexible connection member to be snap-fitted into the fastening hole. 
         [0021]    The flexible connection member may be introduced into the introduction hole formed in one end surface of the fastening unit, and the fastening hook may be snap-fitted into the fastening hole formed in one surface or the other end surface of the fastening unit. 
         [0022]    One or more of the introduction hole may be formed in one end surface of the fastening unit; the fastening hole may be formed in a side surface of the fastening unit, and the introduction hole and the fastening hole may communicate with each other so that they are inclined from one end surface of the fastening unit to the side surface of the fastening unit; and one or more of the flexible connection member may be introduced into the introduction hole, and the fastening hook may be snap-fitted into the fastening hole. 
         [0023]    The grip portion may be provided as a clip member configured to elasticity press and grip the panel, and a mounting depression or hole into which an end of the clip member is inserted may be formed in the panel. 
         [0024]    In order to accomplish the above object, according to a second embodiment of the present invention, there is provided a multifunctional panel assembly, including: a multifunctional panel; a mounting surface configured such that the panel is seated thereon; a pair of fastening units configured to be fastened onto a fastening surface, adjacent to the mounting surface, and the panel, respectively; and a connection portion configured to connect the pair of fastening units to each other. 
         [0025]    Each of the fastening units may include: an introduction hole configured such that each of both ends of the connection portion is introduced thereinto; and a fastening hole configured such that each of both ends of the connection portion introduced into the introduction hole is snap-fitted thereinto. 
         [0026]    The connection portion may include: a flexible connection member made of an elastic or flexible material, and configured to be introduced into the introduction holes; and fastening hooks provided at both ends of the flexible connection member to be snap-fitted into the fastening holes. 
         [0027]    The flexible connection member may be introduced into the introduction hole formed in one end surface of each of the fastening units, and each of the fastening hooks may be snap-fitted into the fastening hole formed in one surface or the other end surface of each of the fastening units. 
         [0028]    Each of the introduction holes may include at least one introduction hole formed in one end surface of the fastening unit; each of the fastening holes may be formed in a side surface of each of the fastening units, and the introduction hole and the fastening hole may communicate with each other so that they are inclined from the one end surface of the fastening unit to the side surface of the fastening unit; and one or more of the flexible connection member may be introduced into the introduction holes, and the fastening hooks may be snap-fitted into the fastening holes. 
         [0029]    In order to accomplish the above object, according to a third embodiment of the present invention, there is provided a multifunctional panel assembly, including: a multifunctional panel; a mounting surface configured such that the panel is seated thereon; a first fastening member provided on an end of the panel; and a second fastening member provided on the mounting surface, and configured such that the first fastening member is fastened thereto so as to couple the panel onto the mounting surface. 
         [0030]    The second fastening member may include at least one fastening pin coupled in a mounting depression or hole formed in the mounting surface; and the first fastening member may include a first fastening plate separably provided in a cutaway depression formed at an end of the panel, and a clip hook provided at one end of the first fastening plate and configured to be hooked around the fastening pin. 
         [0031]    The first fastening member may further include an elastic member provided at the other end of the first fastening plate to connect the first fastening plate and one end of the cutaway depression to each other. 
         [0032]    The first fastening member may further include a first rotating shaft provided at the other end of the first fastening plate to rotatably couple the first fastening plate to one end of the cutaway depression. 
         [0033]    The first fastening member may include a first clip hook provided at an end of the panel; and the second fastening member may include: a second fastening plate separably provided in a cutaway depression formed at an end of the mounting surface, provided with at least one opening so that the first clip hook is hooked into the at least one opening, and provided with a second fastening pin coupled in the opening; a second rotating shaft provided at the other end of the second fastening plate so as to rotatably couple the second fastening plate into one end of the cutaway depression; and a second clip hook configured to be hooked around a first fastening pin coupled in the other end of the cutaway depression. 
         [0034]    In order to accomplish the above object, according to a fourth embodiment of the present invention, there is provided a multifunctional panel assembly, including: a multifunctional panel: a mounting surface configured such that the panel is seated thereon; a fastening unit provided at an end of the panel, and configured to include a fastening member, a hook member, and a protrusion member, a plurality of open portions provided in the mounting surface, and configured such that the fastening unit is mounted thereinto so as to couple the panel onto the mounting surface; and a fastening rib configured to guide the fastening unit that is introduced into the open portions. 
         [0035]    The fastening member may be made of an elastic or flexible material, the hook member may be introduced and hooked into one of the open portions, and the protrusion member may be inserted into one of the open portions. 
         [0036]    In the multifunctional panel assembly according to any one of the first to fourth embodiments, at least one surface of the multifunctional panel may be provided with a decal formed by printing or transferring a design of a desired character or shape. 
         [0037]    At least one surface of the multifunctional panel may be provided with a display device configured to acquire and display an image and a sound. 
         [0038]    At least one surface of the multifunctional panel may be provided with a solar cell module. 
         [0039]    The solar cell module may include: a plurality of solar cells; a grid-type frame configured to provide a plurality of mounting spaces into which the solar cells are inserted and fastened, respectively; and connecting electric wires embedded in respective partitions of the frame defining the mounting spaces, and connected to terminals provided in the solar cells. 
         [0040]    The solar cell module may further include: first hooks provided at both ends of each of the solar cells, and second hooks provided at both ends of each of the partitions, and configured to be hooked to the first hooks. 
         [0041]    There is provided a vehicle, wherein the multifunctional panel assembly constitutes at least one of an interior surface and an exterior surface. 
         [0042]    There is provided an electronic device, wherein the multifunctional panel assembly constitutes at least one of an interior surface and an exterior surface. 
         [0043]    There is provided a building, wherein the multifunctional panel assembly constitutes at least one of an interior surface and an exterior surface. 
       Advantageous Effects 
       [0044]    According to the present invention, there are the advantages of protecting an inside or outside surface on which a panel has been mounted, providing visibility and discrimination, improving an aesthetic effect, generating power using received solar light, providing a large amount of image and sound information to an observer through display when required, acquiring a large amount of image and sound data, maximizing the ease of mounting, and restoring overall functionality without replacement or repair of an overall device through the replacement of only a damaged portion when part of a solar panel has been damaged or a partial function has been lost. 
         [0045]    Furthermore, there is the advantage of easily implementing one or more of the functions at the time and location desired by a user without a need for special or expensive additional equipment. 
         [0046]    Furthermore, an example of an advantage according to the present invention is described by using an application to a vehicle. When the multifunctional panel is mounted by using a side door of a vehicle as a mounting surface, image information acquired by the sensor unit of a right display panel may be displayed on a left display panel and, simultaneously image information acquired by the sensor unit of the left display panel may be displayed on the right display panel, from the standpoint of the driver. When such display panels are provided throughout a vehicle and image information acquired in a specific direction is displayed on a display panel in the opposite direction, an advantage arises in that a transparent vehicle body that is invisible to the eyes of an external observer can be implemented. 
         [0047]    Furthermore, according to the present invention, there is the advantage of easily converting a general vehicle body into a visually transparent vehicle body or inversely converting the visually transparent vehicle body into the general vehicle body. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0048]      FIG. 1 ( a ) and ( b )  are diagrams illustrating states in which a multifunctional panel assembly according to the present invention is mounted on outside and inside surfaces of a vehicle, respectively; 
           [0049]      FIGS. 2 ( a ) and ( b )  are diagrams illustrating examples of the mounting structure of the multifunctional panel assembly according to the present invention; 
           [0050]      FIG. 3  is a perspective view showing a multifunctional panel assembly according to a first embodiment of the present invention: 
           [0051]      FIG. 4  is a diagram illustrating an example of a fastening surface onto which the fastening unit of the multifunctional panel assembly according to the first embodiment of the present invention is fastened; 
           [0052]      FIG. 5  is a perspective view showing the fastening unit of the multifunctional panel assembly according to the first embodiment of the present invention; 
           [0053]      FIG. 6  is a perspective view showing a multifunctional panel assembly according to a first embodiment of the present invention; 
           [0054]      FIG. 7  is a perspective view showing the fastening unit of a multifunctional panel assembly according to a first embodiment of the present invention; 
           [0055]      FIG. 8  is a perspective view showing the multifunctional panel assembly according to the first embodiment of the present invention; 
           [0056]      FIG. 9  is a perspective view showing the grip portion of a multifunctional panel assembly according to a first embodiment of the present invention; 
           [0057]      FIG. 10  is a perspective view showing a multifunctional panel assembly according to a second embodiment of the present invention; 
           [0058]      FIG. 11  is a perspective view showing the panel of a multifunctional panel assembly according to a third embodiment of the present invention; 
           [0059]      FIG. 12  is a perspective view showing the mounting surface of the multifunctional panel assembly according to the third embodiment of the present invention; 
           [0060]      FIGS. 13 and 14  are perspective views showing the fastening structure of the panel and mounting surface of the multifunctional panel assembly according to the third embodiment of the present invention; 
           [0061]      FIG. 15  is a diagram illustrating an example in which the mounting surface of a multifunctional panel assembly according to a fourth embodiment of the present invention is a side surface of a vehicle body; 
           [0062]      FIG. 16  is a diagram showing the panel of the multifunctional panel assembly according to the fourth embodiment of the present invention; 
           [0063]      FIG. 17  shows sectional plan views showing various fastening structures of the mounting surface and panel of the multifunctional panel assembly according to the fourth embodiment of the present invention; 
           [0064]      FIG. 18  is a perspective view showing a case where panels of a multifunctional panel assembly according to the present invention include display devices; 
           [0065]      FIG. 19  is a sectional side view showing a case where panels of a panel assembly according to the present invention include solar cell modules; and 
           [0066]      FIG. 20  shows sectional side views schematically showing the solar cell mounting structure of the solar cell module shown in  FIG. 19 . 
       
    
    
     DESCRIPTION OF REFERENCE NUMERALS OF THE DRAWINGS 
       [0000]    
       
           110 : panel 
           112 : mounting depression or mounting hole 
           120 : mounting surface 
           130 : fastening unit 
           132 : introduction hole 
           134 : fastening hole 
           136 : communication space 
           138 : attachment member 
           140 : connection portion 
           142 : flexible connection member 
           144 : fastening hook 
           150 : grip portion 
           152 : clip member 
           210 : panel 
           220 : mounting surface 
           230 : fastening unit 
           232 : introduction hole 
           234 : fastening hole 
           240 : connection portion 
           242 : flexible connection member 
           244 : fastening hook 
           310 : panel 
           312 : cutaway depression 
           320 : mounting surface 
           322 : mounting depression or mounting hole 
           324 : cutaway depression 
           326 : first fastening pin 
           328 : second fastening pin 
           331 : first fastening plate 
           332 : clip hook 
           333 : elastic member 
           334 : first rotating shaft 
           335 : first clip hook 
           341 : fastening pin 
           342 : second fastening plate 
           343 : opening 
           344 : second rotating shaft 
           345 : second clip hook 
           420 : display device 
           430 : solar cell module 
           431 : solar cell 
           431   a : terminal 
           433 : frame 
           433   a : mounting space 
           433   b : partition 
           435 : connecting electric wire 
           437 : first hook 
           439 : second hook 
           440 : battery 
           500 : panel 
           510 : fastening unit 
           512 : fastening member 
           514 : hook member 
           516 : protrusion member 
           520 : open portion 
           522 : fastening rib 
       
     
       DETAILED DESCRIPTION 
       [0123]    Embodiments according to the present invention will be described in detail below with reference to the accompanying drawings. In this process, the sizes, shapes, etc. of components shown in the drawings may be exaggerated for clarity and convenience of description. Furthermore, the meanings of the terms particularly defined by considering the configuration and operation of the present invention may vary depending on the intention and practice of a user or an operator. These terms should be defined based on the content of the overall specification. Furthermore, the spirit of the present invention is not limited to presented embodiments. Those skilled in the art who understand the technical spirit of the present invention may easily practice other embodiments within the range of the same technical spirit. It is apparent that the other embodiments also fall within the scope of the present invention. 
         [0124]      FIGS. 1 a  and 1 b    are diagrams illustrating states in which a multifunctional panel assembly according to the present invention is mounted on outside and inside surfaces of a vehicle, respectively. In  FIGS. 1 a  and 1 b   , reference symbol “C” designates an example of the portion where the multifunctional panel assembly is mounted. In connection with the definition of a term used in the following description, multifunctional panels  110 ,  210 ,  310  and  500  refer to panels each including at least one of a decal, a display device  420 , and a solar cell module  430  on at least one surface thereof. 
         [0125]    Referring to  FIG. 1 ( a ) , multifunctional panels  110 ,  210 ,  310  and  500  each provided with at least one of a decal formed by printing or transferring a design of a desired character or shape, a display device configured to display an image, and a solar cell module are mounted on the outside surface of a vehicle. In this case, a mounting method is at least one of the mounting structure of a multifunctional panel assembly according to the present invention, welding, screw, bolt and nut fitting, an elastic clip, Velcro, an adhesive tape, and an adhesive pad. 
         [0126]    Meanwhile, the multifunctional panels  110 ,  210 ,  310  and  500  that are mounted on the front and rear windshields of a vehicle body are equipped with sensors A configured to detect an image, a sound, etc. It is preferred that acquired image and sound data is transmitted and displayed on the multifunctional panels mounted on the inside and outside of a vehicle and provided with display devices  420 , so that an occupant inside the vehicle and a user outside the vehicle can become aware of visual and sound information inside or outside the vehicle in real time. 
         [0127]    Referring to  FIG. 1 ( b ) , the multifunctional panels  110 ,  210 ,  310  and  500  provided with display devices are each mounted by using at least one of all the surfaces of a vehicle body, including front and rear windshields, front, rear, left and right windows, a vehicle instrument panel, pillar surfaces, a ceiling, and a floor inside a vehicle, as a mounting surface by means of at least one method of the mounting structure of the multifunctional panel assembly according to the present invention, welding, screw, bolt and nut fitting, an elastic clip, Velcro, an adhesive tape, and an adhesive pad. 
         [0128]    In this case, image and sound sensors A may be contained, for example, embedded, inside the panels  110 ,  210 ,  310  and  500  each mounted on an outside mounting surface, and thus information acquired from the image and sound sensors A may be displayed on the multifunctional panels  110 ,  210 ,  310  and  500  provided with display devices inside the vehicle. 
         [0129]    Accordingly, there is achieved the effect of reserving the convenience of driving of a vehicle even when existing rear-view mirrors attached onto vehicle doors and a rear-view mirror attached onto a portion above the front windshield of a vehicle are moved from a vehicle body or even when the front and rear windshields and all glass windows of a vehicle are replaced with the multifunctional panels  110 ,  210 ,  310  and  500  including the display devices  420 . 
         [0130]      FIGS. 2 a  and 2 b    are diagrams illustrating examples of the mounting structure of the multifunctional panel assembly according to the present invention. In  FIGS. 2 a  and 2 b   , reference symbol “C” designates an example of the portion where the multifunctional panel assembly is mounted. The configuration of the multifunctional panels  110 ,  210 ,  310  and  500  constituting the present invention is illustrated. 
         [0131]    That is, in a preferred embodiment, each of the multifunctional panels  110 ,  210 ,  310  and  500  provided with the display devices  420  is disposed at a center, and each of the multifunctional panels  110 ,  210 ,  310  and  500  provided with solar cell modules  430  is disposed on a surrounding portion or a rear surface. These panels are mounted by using the mounting structure of the multifunctional panel assembly according to the present invention. 
         [0132]    Furthermore, each of the multifunctional panels  110 ,  210 ,  310  and  500  provided with the solar cell modules  430  is mounted on each of the multifunctional panels  110 ,  210 ,  310  and  500  provided with decals, each formed by printing or transferring a desired character or shape design, by using the mounting structure of the multifunctional panel assembly according to the present invention, thereby forming each of the multifunctional panels  110 ,  210 ,  310  and  500 . 
         [0133]    Each of the multifunctional panels  110 ,  210 ,  310  and  500  are mounted on a mounting surface or a frame having a depressed portion, as shown in  FIG. 2 ( a )  or ( b ). In connection with the definition of a term used herein, the mounting surface and the frame are all defined as mounting surfaces  120 ,  220  and  320 . 
         [0134]    The specific structure and function of the multifunctional panel assembly according to the present invention will be described in detail below. 
         [0135]      FIG. 3  is a perspective view showing a multifunctional panel assembly according to a first embodiment of the present invention,  FIG. 4  is a diagram illustrating an example of a fastening surface onto which the fastening unit of the multifunctional panel assembly according to the first embodiment of the present invention is fastened, and  FIG. 5  is a perspective view showing the fastening unit of the multifunctional panel assembly according to the first embodiment of the present invention. The specific configuration and fastening structure of the multifunctional panel assembly will be described in detail with reference to  FIGS. 3 to 5 . 
         [0136]    Referring to  FIG. 3 , the multifunctional panel assembly is used to mount a predetermined panel, provided with a decal, a display device  420  or a solar cell module  430 , on all items and objects each having an outside or inside mounting surface, such as a vehicle, a vessel, an aircraft, an electronic product, a building, etc. The multifunctional panel assembly includes a panel  110 , a mounting surface  120 , a fastening unit  130 , a connection portion  140 , and a grip portion  150 . In this case, the mounting surface  120  may be configured as a frame. 
         [0137]    Although an example in which the mounting surface  120  of the panel  110  is a corresponding portion of the vehicle body of a vehicle will be described below, this is merely an example, and the content of the present invention is not limited by a specific example of the mounting surface  120 . 
         [0138]    The panel  110  may have various functions, such as a design function (including visibility, discrimination, aesthetic appearance, painting, and protection functions), a solar cell function (including a power generation function), a display function (including image and sound information acquisition and display functions), etc. These functions are selectively used by a user. Furthermore, the mounting surface  120  provides a surface onto which the panel  110  is seated, fastened, and mounted. 
         [0139]    The fastening unit  130  is fastened onto a fastening surface adjacent to the mounting surface  120 . For example, when the mounting surface  120  is set to an outside surface of the hood of a vehicle, as shown in  FIG. 4 , the fastening surface may correspond to an inside surface of the hood of the vehicle. 
         [0140]    In this case, the fastening surface may be set to any surface as long as the surface allows the panel  110  to be seated and mounted on the mounting surface  120 . The content of the present invention is not limited by the location of the fastening surface. 
         [0141]    More specifically, the fastening unit  130  is configured to include an introduction hole  132  and a fastening hole  134 . The introduction hole  132  and the fastening hole  134  communicate with each other through a communication space  136 . 
         [0142]    That is, the introduction hole  132  is opened in the upper end surface of the fastening unit  130  in order to allow the other end of the connection portion  140  to be introduced, and the fastening hole  134  is opened in any one of one surface, lower end surface and both side surfaces of the fastening unit  130  in order to allow the other end of the connection portion  140  introduced into the introduction hole  132  to be snap-fitted thereinto. 
         [0143]      FIGS. 3 to 5  show examples in which the fastening hole  134  is opened in one surface, i.e., the front surface, of the fastening unit  130 . 
         [0144]    Furthermore, at least one attachment member  138  is provided on the rear surface of the fastening unit  130 , as shown in  FIG. 3 . The fastening unit  130  may be attached or fastened onto the fastening surface by the attachment member  138 . 
         [0145]    In this case, the attachment member  138  may be a fastening member, such as an adhesive pad, Velcro, a screw, a bolt, a nut, a welding material, or the like. Any element or method may be used as long as the element or method can fasten the fastening unit  130  onto the fastening surface. The content of the present invention is not limited by the type of attachment member  138 . 
         [0146]    The connection portion  140  is used to connect the panel  110  to the fastening unit  130 . More specifically, the connection portion  140  includes a flexible connection member  142  having the characteristic of exhibiting some elasticity and flexibility and thus being restored when being bent, and a fastening hook  144 . 
         [0147]    The flexible connection member  142  is made of an elastic and flexible material including a synthetic resin, a metal alloy or the like so that it can be bent in various directions, and is introduced into the introduction hole  132 . The fastening hook  144  is provided at the other end of the flexible connection member  142  so that it can be snap-fitted into the fastening hole  134 . In particular, the fastening hook  144  is configured to have elasticity. Accordingly, when the fastening hook  144  is inserted into the introduction hole  132 , the shape thereof slides through the communication space  136 , and the shape of the fastening hole  134  is restored, thereby implementing snap fitting. 
         [0148]    Referring to  FIGS. 3 to 5 , since the fastening hole  134  is opened in one surface, i.e., the front surface of the fastening unit  130  as described above, the flexible connection member  142  is introduced into the introduction hole  132  formed in the upper end surface of the fastening unit  130 , and the fastening hook  144  is snap-fitted into the fastening hole  134  formed in one surface of the fastening unit  130 . 
         [0149]    Furthermore,  FIG. 6  is a perspective view showing a multifunctional panel assembly according to a first embodiment of the present invention, and illustrates an example in which a fastening hole  134  is opened in the lower end surface of a fastening unit  130 . 
         [0150]    Accordingly, according to the present embodiment, a flexible connection member  142  is introduced into an introduction hole  132  formed in the upper end surface of a fastening unit  130 , and a fastening hook  144  is snap-fitted into a fastening hole  134  formed in the lower end surface of the fastening unit  130 . 
         [0151]    Meanwhile,  FIG. 7  is a perspective view showing the fastening unit of a multifunctional panel assembly according to a first embodiment of the present invention, and  FIG. 8  is a perspective view showing the multifunctional panel assembly according to the first embodiment of the present invention. These drawings illustrate an example in which a pair of introduction holes  132  are formed in the upper end surface of a fastening unit  130  and fastening holes  134  are opened in both side surfaces of the fastening unit  130 . 
         [0152]    Furthermore, in accordance with this, a pair of flexible connection members  142  are provided and introduced into the pair of introduction holes  132 , and fastening hooks  144  are snap-fitted into the fastening holes  134 . 
         [0153]    In this case, the introduction holes  132  and the fastening holes  134  communicate with each other so that they are inclined downward from the upper end surface of the fastening unit  130  to both side surfaces of the fastening unit  130 . That is, since the bottom surface of the communication space  136  is formed to be inclined downward, the flexible connection members  142  are naturally moved to the fastening holes  134  after being introduced into the introduction holes  132 , and thus the fastening hooks  144  can be easily snap-fitted into the fastening holes  134 . 
         [0154]    In this case, a plurality of introduction holes  132 , a plurality of fastening holes  134 , and a plurality of communication spaces  136  may be formed in the fastening unit  130 . 
         [0155]      FIG. 9  is a perspective view showing the grip portion of a multifunctional panel assembly according to a first embodiment of the present invention. The grip portion  150  is provided at one end of the connection portion  140  so as to grip a panel  110 , and is provided as a clip member  152  so as to elasticity press and grip the panel  110 . 
         [0156]    Furthermore, a mounting depression or mounting hole  112  is formed in the panel  110 . The mounting depression or mounting hole  112  is intended to provide a space into which an end of the clip member  152  is inserted and fastened, thereby maximizing the coupling force of the grip portion  150  and the panel  110 . 
         [0157]    In this case, the mounting depression  112  is formed in the panel  110  to have a predetermined depth, and is formed in at least one surface of the panel  110 . Furthermore, the mounting hole  112  is formed to pass through the panel  110 . 
         [0158]    According to the first embodiment of the present invention, the mounting depression or mounting hole  112  may be selectively formed to have any one of various shapes, such as various depths, various lengths, etc., depending on the level of the elastic pressing force or the like of the clip member  152 . 
         [0159]    Furthermore, the grip portion  150  may be implemented on the panel  110  or a mounting surface  120  by using various types of attachment members  138 , such as welding, bolt and nut fitting, an adhesive tape, an adhesive pad, Velcro, an adhesive, a hook and a clip, screw fitting, etc. Accordingly, the content of the present invention is not limited by a specific attachment method. 
         [0160]      FIG. 10  is a perspective view showing a multifunctional panel assembly according to a second embodiment of the present invention. Referring to  FIG. 10 , the specific configuration and fastening structure of the multifunctional panel assembly will be described in detail. Descriptions of structures identical to those of the multifunctional panel assembly according to the above-described first embodiment are omitted. 
         [0161]    Referring to  FIG. 10 , the panel assembly according to the second embodiment of the present invention is configured to include a panel  210 , a mounting surface  220 , a fastening unit  230 , and a connection portion  240 . In the multifunctional panel assembly of the first embodiment, the grip portion  150  is provided at one end of the flexible connection member  142 , and the fastening hook  144  is provided at the other end thereof. In contrast, in the multifunctional panel assembly of the second embodiment, fastening hooks  244  are respectively provided at both ends of a flexible connection member  242  constituting part of the connection portion  240 . 
         [0162]    That is, according to the second embodiment of the present invention, a pair of fastening units  230  are provided to be fastened onto a fastening surface, adjacent to the mounting surface  220 , and the panel  210 , respectively. The connection portion  240  connects the pair of fastening units  230  to each other. 
         [0163]    Each of the fastening units  230  includes an introduction hole  232  and a fastening hole  234 , as described above. Both ends of the flexible connection member  242  are introduced into the introduction holes  232 , and the fastening hooks  244  provided at both ends of the flexible connection member  244  are snap-fitted into the fastening holes  234 , respectively. 
         [0164]      FIG. 11  is a perspective view showing the panel of a multifunctional panel assembly according to a third embodiment of the present invention, and  FIG. 12  is a perspective view showing the mounting surface of the multifunctional panel assembly according to the third embodiment of the present invention. Referring to  FIGS. 11 and 12 , the specific configuration and fastening structure of the multifunctional panel assembly will be described in detail below. 
         [0165]    Referring to  FIGS. 11 and 12 , the panel assembly is configured to include a panel  310 , a mounting surface  320 , a first fastening member, and a second fastening member. As described above, the panel  310  has various functions, such as a decal, a solar cell, a display, etc. The mounting surface  320  provides a surface onto which the panel  310  is seated and fastened. 
         [0166]    The first fastening member is provided at an end of the panel  310 , and the second fastening member is provided on the mounting surface  320  and fastened with the first fastening member, thereby coupling and fastening the panel  310  to the mounting surface  320 . 
         [0167]    More specifically, the first fastening member includes a first fastening plate  331  and a clip hook  332 . The first fastening plate  331  is provided to be separable from a cutaway depression  312  formed at an end of the panel  310  through the action of an elastic member  333  or first rotating shaft  334 . The clip hook  332  is provided at one end of the first fastening plate  331 . 
         [0168]    Auxiliary clip hooks  332   a  disposed on both sides of the clip hook  332  are provided at an end of the panel  310 . The auxiliary clip hooks  332   a  enhance the coupling force of the panel  310  and the mounting surface  320 . 
         [0169]    Furthermore, the second fastening member includes at least one fastening pin  341 . The fastening pin  341  is fastened in the mounting or mounting hole  322  formed in the mounting surface  320 . The clip hook  332  is hooked around the fastening pin  341 , and thus the panel  310  is coupled and fastened onto the mounting surface  320 . 
         [0170]    Referring to  FIG. 12 ( a ) , the mounting depression  322  is formed in the mounting surface  320  to have a predetermined depth. The mounting depression  322  is formed in one surface of the mounting surface  320 . Referring to  FIG. 12 ( b ) , the mounting hole  322  is formed to pass through the mounting surface  320 . 
         [0171]    According to the third embodiment of the present invention, the shape of the mounting depression or mounting hole  322  may be selectively formed depending on the level of the shape, disposition structure, elasticity or the like of the clip hook  332 . The content of the present invention is not limited by this shape. 
         [0172]    Furthermore, Referring to  FIG. 12 , a plurality of fastening pins  341  and a plurality of mounting depressions or mounting holes  322  may be provided on the mounting surface  320 , thereby fastening the panel  310  having one of various sizes onto the mounting surface  320 . 
         [0173]    Meanwhile, in the first fastening member shown in  FIG. 11 , the first fastening plate  331  and one end of the cutaway depression  312  may be coupled to each other in various structures. In  FIG. 11 ( a ) , the first fastening plate  331  and the one end of the cutaway depression  312  are coupled to each other by the elastic member  333  provided at the other end of the first fastening plate  331 . 
         [0174]    Accordingly, when seating and fastening the panel  310  onto the mounting surface  320  in case of necessity, a user ensures an available space between the clip hook  332  and the fastening pin  341  by pulling the first fastening plate  331  in one direction, thereby facilitating hook fastening. 
         [0175]    Furthermore, in  FIG. 11 ( b ) , the first fastening plate  331  is rotatably coupled to one end of the cutaway depression  312  by a first rotating shaft  334  provided at the other end of the first fastening plate  331 . 
         [0176]    Therefore, in this case, when seating and fastening the panel  310  onto the mounting surface  320 , a user ensures an available space between the clip hook  332  and the fastening pin  341  by rotating the first fastening plate  331  in one direction, thereby facilitating hook fastening. 
         [0177]    Furthermore, one or more auxiliary clip hooks  332   a  may be provided at an end of the panel  310 , preferably around the first fastening plate  331 , and may be hooked around the fastening pin  341 . 
         [0178]    Meanwhile.  FIGS. 13 and 14  are perspective views showing the fastening structure of the panel and mounting surface of the multifunctional panel assembly according to the third embodiment of the present invention. 
         [0179]    Referring to  FIGS. 13 and 14 , the first fastening member is configured to include a first clip hook  335  provided at an end of the panel  310  in an integrated manner, and the second fastening member is provided on the mounting surface  320  and is configured to include a second fastening plate  342 , a second rotating shaft  344 , and a second clip hook  345 . In this case, the clip hook  332  and the first rotating shaft  334  shown in  FIGS. 11 and 12  correspond to the second clip hook  345  and the second rotating shaft  344  shown in  FIGS. 13 and 14 . 
         [0180]    The second fastening plate  342  is provided with at least one opening  343  into which the first clip hook  335  can be hooked, and is provided to be separable from a cutaway depression  324  formed at an end of the mounting surface  320 . 
         [0181]    The second rotating shaft  344  is provided at the other end of the second fastening plate  342 , and rotatably fastens the second fastening plate  342  into one end of the cutaway depression  324 . 
         [0182]    The second clip hook  345  is hooked around a first fastening pin  326  coupled to the other end of the cutaway depression  324 . 
         [0183]    The fastening process of the panel assembly including the first fastening member and the second fastening member is now described. First, the second clip hook  345  hooked around the fastening pin  326  is separated from the fastening pin  326 , and the second fastening plate  342  is rotated toward the panel  310  and the first clip hook  335 . 
         [0184]    Furthermore, each of the first clip hooks  335  formed at both ends of the panel  310  is hooked around the second fastening pin  328  coupled in the opening  343  of the second fastening plate  342 . Then, the second fastening plate  342  is rotated toward the first fastening pin  326 , and the second clip hook  345  is hooked around the first fastening pin  326 . 
         [0185]    According to this fastening process, the panel  310  having an area identical to the area of the mounting surface  320  can be easily fastened onto the mounting surface  320  while maintaining strong fastening force. 
         [0186]      FIG. 15  is a diagram illustrating an example in which the mounting surface of a multifunctional panel assembly according to a fourth embodiment of the present invention is a side surface of a vehicle body,  FIG. 16  is a diagram showing the panel of the multifunctional panel assembly according to the fourth embodiment of the present invention, and  FIG. 17  shows sectional plan views showing various fastening structures of the mounting surface and panel of the multifunctional panel assembly according to the fourth embodiment of the present invention. Referring to  FIGS. 15 to 17 , the fastening structures of the panel and the mounting surface when the mounting surface of the multifunctional panel assembly is a side surface of a vehicle body will be described in detail. 
         [0187]    The multifunctional panel assembly according to the fourth embodiment of the present invention includes a multifunctional panel  500 , a mounting surface  320  configured such that the panel  500  is seated thereon, a fastening unit  510 , a plurality of open portion  520   a ,  520   b ,  520   c  formed in the mounting surface  320 , and a fastening rib  522 . 
         [0188]    According to this multifunctional panel assembly, when the multifunctional panel  500  is fastened onto the mounting surface  320  composed of a side surface of a vehicle body, the fastening unit  510  of the multifunctional panel  500  may be inserted and fastened into open portions  520   a .  520   b  and  520   c  formed in a door of the vehicle body. 
         [0189]    The fastening unit  510  is configured to include a fastening member  512 , a hook member  514 , and a protrusion member  516 . The fastening member  512  is made of a material having elasticity and flexibility, and thus the fastening member  512  is introduced and fastened into the interior of the door through the open portions  520   a ,  520   b  and  520   c , thereby fastening the panel  500  onto the mounting surface  320 , i.e., an outside surface of the door of the vehicle body. 
         [0190]    That is, the hook member  514  is hooked to a predetermined end inside the door, thereby enhancing the fastening force of the panel  500  and the mounting surface. In particular, the protrusion member  516  is inserted into the mounting surface, thereby fastening the panel  500  at an accurate location. In this case, it is preferred that the protrusion member  516  is made of a material having flexibility and some elasticity so as to provide contact force in connection with the mounting surface. 
         [0191]    A fastening rib  522  is formed at an end in which the open portions  520   a ,  520   b  and  520   c  are formed. When the fastening member  512  is introduced into the open portion  520   a , the fastening rib  522  supports the fastening member  512  while guiding it, thereby fixing the location of the panel  500 . In this case, it is preferred that the fastening rib  522  is made of a material having rigidity as high as possible so as to enhance contact force in connection with the fastening member  512  and provide secure support. 
         [0192]    For example, referring to  FIG. 17 ( a ) , the fastening member  512  is introduced into the open portion  520   a , the hook member  514  is hooked into the open portion  520   b , and the protrusion member  516  is inserted into the open portion  520   c.    
         [0193]    Furthermore, referring to  FIG. 17 ( b ) , the fastening member  512  is introduced into the open portion  520   a  and, simultaneously, the hook member  514  is hooked into the open portion  520   a . The protrusion member  516  is inserted into the open portion  520   b.    
         [0194]    In this case, the hook member  514  is introduced into the open portion  520   a , and follows the guidance of the fastening rib  522 . Then, the hook member  514  is bent due to the elasticity and flexibility thereof, comes out through the open portion  520   a  or  520   b , is restored into the original shape thereof, and is then hooked. 
         [0195]    Meanwhile, as described above, according to the present invention, the panels  110 ,  210 ,  310  and  500  may be provided as panels having various functions, such as design, solar cell and display functions, etc. 
         [0196]    That is, when one of all objects or items each having a mounting surface, including a transportation means including a vehicle, an electronic product, a building, etc., is designed, each of the panels  110 ,  210 ,  310  and  500  includes a decal, formed by printing, transferring, embossing or intaglioing a design of a desired character or shape, on at least one surface thereof. 
         [0197]    Furthermore, when it is desired to provide various types of commercial image information so as to provide various types of information to drivers and passengers inside various transportation means, etc. or so as to provide an external advertising effect, each of the panels  110 ,  210 ,  310  and  500  is provided with a display device  420  for displaying images on at least one surface thereof. 
         [0198]    In this case, it is apparent that it is preferred that each of the panel  110 ,  210 ,  310  and  500  is provided and equipped with a comprehensive image and sound acquisition and display device A including a camera, a microphone, a speaker, and related subsidiary equipment. Furthermore, it is preferred that subsidiary electronic equipment for acquiring, storing, transmitting and receiving related image data is further included. 
         [0199]      FIG. 18  is a perspective view showing a case where panels of a multifunctional panel assembly according to the present invention include display devices. 
         [0200]    Referring to  FIG. 18 , there is shown a diagram illustrating an example in which panels  110 ,  210 ,  310  and  500 , each including a display device  420  in which image and sound sensors and the like are embedded and mounted, are mounted by using the front, rear, left and right doors of a vehicle as mounting surfaces by means of the mounting structure of the multifunctional panel assembly according to the present invention, by means of at least one method of the mounting structure of the multifunctional panel assembly, welding, screw, bolt and nut fitting, an elastic clip. Velcro, an adhesive tape, and an adhesive pad, or by means of a combination of two or more of these methods. 
         [0201]    In this case, image and sound information acquired by the image and sound sensors A of the panels  110 ,  210 ,  310  and  500  mounted on one side surface based on a reference in front of a driver&#39;s seat is transmitted and displayed to and on the panel  420 , mounted on the other side, by means of vehicle-mounted image and sound data processing electronic equipment B via an electric wire or wireless communication. 
         [0202]    In this case, a background image in one direction may be provided to an observer who is viewing a vehicle body in the direction. In an extended application, the panels  110 ,  210 ,  310  and  500  may be mounted on an overall vehicle by means of the mounting structure of the multifunctional panel assembly according to the present invention, by means of at least one method of the mounting structure of the multifunctional panel assembly, welding, screw, bolt and nut fitting, an elastic clip, Velcro, an adhesive tape, and an adhesive pad, or by means of a combination of two or more of these methods, and background image data in the observation direction may be directly displayed to the observer. Accordingly, a visually transparent vehicle in which only a background is seen by at least the observer and an actual vehicle is not seen by at least the observer may be configured. 
         [0203]    Furthermore, when it is desired to provide the panels  110 ,  210 ,  310  and  500  on the roof of a house or an apartment building or the outside of a transportation means, such as a vehicle and generate power by using solar light or solar heat, each of the panels  110 ,  210 ,  310  and  500  includes the solar cell module  430  on at least one surface thereof. 
         [0204]    The specific structure of a multifunctional panel assembly in which each of panels  110 ,  210 ,  310  and  500  includes a solar cell module will be described in detail below with reference to  FIGS. 19 and 20 . 
         [0205]      FIG. 19  is a sectional side view showing a case where panels of a panel assembly according to the present invention include solar cell modules, and  FIG. 20  shows sectional side views schematically showing the solar cell mounting structure of the solar cell module shown in  FIG. 19 . 
         [0206]    Referring to  FIGS. 19 and 20 , the solar cell module  430  includes a plurality of solar cells  431 , a grid-type frame  433 , connecting electric wires  435  embedded in the frame  433 , and first hooks  437  and second hooks  439  made of an elastic material. 
         [0207]    The solar cells  431  include a plurality of unit cells. The frame  433  is provided in the form of a grid so as to provide a plurality of mounting spaces  433   a  so that the solar cells  431  are inserted and fastened into the mounting spaces  433   a.    
         [0208]    The connecting electric wires  435  are embedded in the respective partitions  433   b  of the frame  433  defining the mounting spaces  433   a , and are connected to terminals  431   a  provided in the solar cells  431 . Accordingly, a user may configure the panels  110 ,  210 ,  310  and  500  each including the solar cell module  430  only by placing the solar cells  431  in the plurality of mounting spaces  433   a.    
         [0209]    Meanwhile, it is preferred that power generated in each of the multifunctional panel assemblies  110 ,  210 ,  310  and  500  including the frame  433  and the solar cell module  430  is stored in a battery  440  that is connected by an electric wire and provided at a different location. 
         [0210]    The first hooks  437  are provided at both ends of the solar cell  431 , and the second hooks  439  are provided at both ends of each of the partitions  433   b  and hooked to the fastening hooks  437 . Accordingly, a user may conveniently mount the solar cells  431  in the mounting spaces  433   a . In this case, the electric wires including first hooks  437  and second hooks  438  include the terminals of the embedded connecting electric wires  435 , thereby forming the panels  110 ,  210 ,  310  and  500  each including the solar cell module  430  in which all electric wires are connected only by simple insertion mounting. 
         [0211]    According to the present invention, each of the plurality of solar cells  431  may be modularized, and curvature may be applied to the panels  110 ,  210 ,  310  and  500  including the solar cell module  430 . That is, even when the frame  433  is formed to have a curvature, the individual solar cells  431  may be easily mounted in the mounting spaces  433   a.    
         [0212]    Furthermore, even when part of the solar cells  431  has been damaged, the overall solar cell module  430  does not need to be replaced, and thus the ease of replacement is increased. The remaining undamaged solar cells  431  are used without change, and thus maintenance and repair costs can be significantly reduced. 
         [0213]    In particular, it will be clearly appreciated by those having ordinary knowledge that the solar cell  431  may be mounted into the solar cell module  430  by means of the first hook  437 , the second hook  439  and the mounting structure of the multifunctional panel assembly according to the present invention, which has been described in conjunction with the first to fourth embodiments, by means of at least one method of the former method, welding, screw, bolt and nut fitting, an elastic clip. Velcro, an adhesive tape, and an adhesive pad, or by means of a combination of two or more of these methods. 
         [0214]    Although the examples in which the first to fourth embodiments are applied to a vehicle have been used for the technical description of the multifunctional panel assembly according to the present invention, technical problems that the present invention is intended to overcome are not limited to the above-described technical problems related to a vehicle. Although not described specifically, the present invention may be applied to all items and objects having inside and outside surfaces each having a specific shape, such as a partition, door, ceiling, and floor surface of a building and the body of a microwave oven. It will be clearly appreciated by those having ordinary knowledge that other technical problems related to the above applications are included in the spirit of the above-described technical problems that the present invention is intended to overcome. 
         [0215]    While the embodiments according to the present invention have been described as described above, these embodiments are merely examples. It will be appreciated by those having ordinary knowledge in the art that various modifications and embodiments falling within an equivalent range may be made from the above description. Therefore, the true technical range of protection of the present invention should be defined based on the following claims.