Patent Publication Number: US-7584562-B2

Title: Multi display board

Description:
BACKGROUND OF THE INVENTION 
   The present invention relates to a multi-advertising signboard which is convertible for daytime and nighttime use, with the complex functions of Para-flex, neon sign and electric signboard. 
   In modern society, advertisements function as an important means of information communication to the people and, as the communication of information becomes faster, various means of information communication have been developed. Accordingly, advertising clients are seeking faster and various types of media to promote their advertising information to customers. 
   As known to the general public, the conventional advertising display boards for specific products and companies were heretofore placed on the roof of a building, inside of a subway station, and on the road. The main structure of the board, as shown in  FIG. 6  of the conventional Para-flex, was made of squared supporting panel  42 . The several luminescent lamps  44  are placed at certain intervals on the face of the supporting panel  42  and on the perimeter of the panel, reflecting panels  46  are placed vertically. Reflecting plates  48  are installed on the reflecting panel  46 , and an advertising printed sheet (not shown) is attached on the front of the reflecting panels  46 . 
   The conventional Para-flex advertising board above works by rear projection of the lights of luminescent lamps installed on the supporting panel  42 , and the effectiveness of advertising by rear reflecting plate is very low since the direction of lights of the luminescent lamps above is not projecting toward a specific direction. Accordingly, for the front advertising printed sheet to meet a required advertisement standard, it requires several back lightings of luminescent lamps, which creates a certain amount of economic burden to the client, as a result. 
   In addition, since the para-flex advertising board described above is installed as a type in which the advertising printed sheet is attached on the certain size of the case, the client not only has to replace the board if he intends to advertise other contents of advertisement, but also, the board may not attract the visual attraction and interest from the passerby, since the advertising printed sheet usually has been exhibited for too long period without any movement and change of content. Thus, a decrease of the effectiveness of advertisement resulted. In the case of advertisement boards installed on the roof or on the wall, the supporting panel becomes large in proportion to the size of advertising printed sheet, such that it causes not only difficulties in transporting and installing, but also several problems, like the risk of incidents in installing and shortage of life cycle or transformation by surrounding weather conditions (temperature, rain and wind, etc). 
   Even such electric advertising boards as CRT (cathode-ray tube) and PDT were introduced recently to address the defects mentioned above, but most of the electric boards are adopting changed type LED device because of the limit of size of CRT and PDT. 
   This type of electric board, as is changing from large to mid size, low to high density and advertisement-oriented to means of information communication, is installed around the plaza of a large number of public passing from the cross road of large traffic passing. 
   However, since the electric board using CRT monitors is advertising only still displays, and cannot generally attract the present-day public&#39;s interest with such still advertising displays, it has a problem that it cannot perform its public relations and advertisement function satisfactorily. 
   The life of the electric board above using LED is over 70,000 hours if it is working 6 hours daily and the luminosity of it is 2,000 cd/cm2. 
   It has the advantage of digital display with LED devices placed at 62.5 m/m intervals. 
   However, the conventional electric board is displaying moving pictures through a controller that is transforming and controlling video signals input from video signal output devices. The controller has such disadvantages as a complicated system and large system size, since the device has to transform and control video signals live. 
   In addition, the system requires such complicated systems as including an LED display board, personal graphic computer, video signal input, video output server and other programs/devices to display pictures. The effectiveness of the convention system is not therefore sufficiently satisfactory as compared to the excessive investment, considering that in the event of system breakdown, it required long repairing time and suitable equipment, and decrease of visual conspicuousness of its display in daytime. 
   Meanwhile, the effective value of a neon sign is below expectation because of impossibility of program change. 
   SUMMARY OF THE INVENTION 
   It is therefore an object of the invention to solve the defects mentioned above and to provide a multi-advertising signboard which is convertible daytime and nighttime, with the complex functions of para-flex, neon sign and electric sign board. Thus the purpose of this invention is to enhance the advertising effectiveness by a multi-convertible advertising board. 
   In further detail, by attaching, in consecutive orders, layers of printed boards punched matching to the LED light to the front of several PCB boards equipped with the grid combination of 3 primary colored LED, the printed front board functions as a daytime advertising board, while the electric LED backdrop board displays various moving pictures through a perforated front board during nighttime. Thus, the purpose of this invention is to enhance the advertising effectiveness by a multi-convertible advertising board. 
   Another purpose of this invention is to provide an advertising board that projects brighter luminosity with a significantly less amount of electricity consumption compared with that of existing display systems equipped with several luminescent lamps per unit Sq. m of Para-flex. 
   The above, and other objects, features and advantages of the present invention will become apparent from the following description read in conjunction with the accompanying drawings which depict the most desirable structural examples of the invention, and in which the like parts in each of the drawings are referred to by the same number in explaining other drawings. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
       FIG. 1  is an exploded perspective view of an embodiment of the invention; 
       FIG. 2  is a rear perspective view of panel body according to an embodiment of the invention; 
       FIG. 3  is a rear perspective view of blocking panel according to an embodiment of the invention; 
       FIG. 4  is a combination perspective view of panel body; 
       FIG. 5  is an exploded perspective view of an alternative embodiment of the invention; and 
       FIG. 6  is a side view of the advertising board according to the prior art. 
   

   DETAILED DESCRIPTION OF PREFERRED EMBODIMENT 
   As shown in  FIG. 1 , an embodiment according to the present invention consists of PCB base plate  6  equipped with LED (Light Emitting Diode) groupings  20 , each of three primary colors, placed at regularly spaced intervals defining a grid pattern, panel body  2  to which several PCB panels  6  are fastened thereto, and perforated blocking panel  4  printed with advertising content on a face thereof (for example, an image of an automobile, as depicted). 
   Panel body  2  forms several compartments  14  by vertical walls  10 , lateral walls  10   a  and outside wall  16 . At the center of the compartments  14  is perforated outlet  22  of electric code connected to LED groupings  20  inserted on the PCB base plate  6  and fastened thereon. The outside wall  16  is formed with several fixed protrusions  32  to fasten panel body  2  to the walls or to the frame supporting the advertising panel. According to an advantageous feature of the invention, the vertical walls  10  and the lateral walls  10   a  which extend between outside wall  16  are arranged in respective spaced-apart pairs such that adjacent ones of the compartments  14  are separated from one another by a vertical gap  17  and a lateral  17   a  present between each of the respective pairs of the vertical walls  10  and the lateral walls  10   a , such that when received to the panel body  2 , adjacent ones of the base plates  6 , which are configured to correspond to respective ones of the compartments  14 , are spaced apart from one another by a vertical separation  19  and a lateral separation  19   a.    
   According to an advantageous feature of the invention, the fixed protrusions  32  are place mingled in all direction to fasten both the frame and panel body  2  tightly. 
   The PCB base plates  6  to which LED groupings  20  are received, as described above, are fastened to the panel body  2  by tightening connecting bolts to several inserted protrusions  18  in compartments provided at regular intervals and which serve to space out the PCB base plates  6  and the outside wall  16  of the panel body  2 . 
   Advantageously, the gaps between panel body  2  and base plate  6  are filled with silicone, lest the rain and humidity should penetrate the gaps and damage the parts of the system. 
   The display of the system is made by the combination of the primary colored LED groupings  20  fastened to PCB base plate  6 , and LED groupings  20  can be fastened to the base plate  6  in grid type or other pattern in accordance with the display contents of advertisement. 
   Advantageously, the LED groupings  20  inserted in base plate  6  should be coated with a required thickness of silicone from the front of the base plate such that it cannot be exposed to outside environment and can be protected from vibration, humidity and weather. 
   The blocking panel  4  attached to the panel body  2  and placed on the face of base plate  6  is punched with holes (i.e, openings)  12  matching to LED groupings  20 , lest the quality of display should decrease because of diffusion of LED light. The four corners of the back of the blocking panel  4  are provided with connecting protrusions  28  (see  FIG. 3 ) for connection with the outside wall  16  of the panel body  2  which is provided with connecting holes  26  at a top and bottom thereof positioned to connect with connecting protrusions  28  on the panel body  2 , so that LED groupings  20  protrude from the face of the advertising blocking panel  4 . 
   In accordance with the invention, the face of the blocking panel  4  printed with required advertisement can be used as a daytime advertising board, while LED light display can be used for a various moving picture advertising board in nighttime. 
   Referring now to  FIG. 5 , an alternative embodiment to this invention is depicted, and which includes a feature allowing the client to change easily the advertisement by laying another advertising sheet  8  on the existing blocking panel  4 . 
   As described above, this invention is made by the combination of groupings of three primary colored LED devices  20  fastened on PCB base plate at regularly spaced intervals and coated with silicone for tight protection and fastening of the LED groupings  20  on the base plate  6 . 
   After PCB base plate  6  equipped with LED groupings  20  is inserted into the compartment, the gaps between wall  16  and the base plate  6  are filled with silicone for complete water-tightening. The electric code connected to the PCB base plate  6  is extracted through opening  22  for connection with input &amp; output terminal for display of advertisement, and the layered advertising blocking panel  4  that protects against diffusing of light from LED groupings  20 , is used for daytime advertisement effectively. 
   In accordance with the principles of the invention, the blocking panel  4  is designed as removable with the combination of connection protrusions and holes that the user can replace blocking panel  4  easily, and place another advertising sheet  8  on the face thereof, which contains a visual image analogous to that printed directly on the blocking panel  4  in the embodiment of  FIG. 1 , and which, in the depicted embodiment of  FIG. 5 , is an image of an automobile. 
   In addition, the size of displaying board can be changed freely with the combination of other panel bodies  2  by the necessity of the client, when fastening the mingled and fixed protrusions  32  installed on the panel body  2  to the wall or supporting frame. 
   Accordingly, the invention displays, in daytime, a printed advertising sheet, and in nighttime, moving advertising pictures by display of several LED devices that are installed in PCB base plate  6  and which are displaying output signals from the video output signal device. 
   At nighttime, the PCB base plate  6  equipped with numerous LED devices  20  placed at certain intervals displays moving advertising pictures by the combination of three primary colored LED radiating as a group