Abstract:
The instant application describes a display device including a display panel; a first component forming the front portion of the cabinet; a second component forming the rear portion of the cabinet; a metal plate comprising a first flat portion parallel to the display surface of the display panel and a second flat portion perpendicular to the first flat portion; an engaging portion provided on the first flat portion, the engaging portion being engaged with the first component; a female screw portion to which a screw penetrating the second component is inserted, and a receiving portion provided on the first component to which the engaging portion is engaged.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
       [0001]    This application is a continuation-in-part of Patent Cooperation Treaty Patent Application Number PCT/JP2011/053477, filed on Feb. 18, 2011, which claims priority from Japanese Patent Application Number 2010-042642, filed on Feb. 26, 2010, all of which are hereby incorporated by reference herein in their entirety. 
     
    
     TECHNICAL FIELD 
       [0002]    The instant application relates to a connecting portion of the front cabinet and the back cabinet of the display device. 
       BACKGROUND 
       [0003]    A display device includes a cabinet to accommodate a display panel. The cabinet is consisted by a front cabinet which covers the lateral side and partially the front side of the display panel and a back cabinet which covers the back side of the display panel. 
         [0004]    When connecting the front cabinet and the back cabinet, one method is to penetrate a screw from the rear side of the back cabinet and this screw is screwed to the front cabinet which is a frame portion of the display panel. In this method, it is necessary to provide a clearance between the lateral side of the display panel and the front cabinet. Further, it is necessary to provide a female screw portion in the front cabinet. This hampers reducing the width of the frame part of the front cabinet. 
         [0005]    There is a video wall display which is consisted by arranging a plurality of display devices in matrix to make a single large screen. In this video wall displays, it is desired to make the width of frame portion small in order to reduce the difference between the neighboring displaying portion of the display device. 
       SUMMARY 
       [0006]    In one general aspect, the instant application describes a display device including a display panel; a first component forming the front portion of the cabinet; a second component forming the rear portion of the cabinet; a metal plate comprising a first flat portion parallel to the display surface of the display panel and a second flat portion perpendicular to the first flat portion; an engaging portion provided on the first flat portion, the engaging portion being engaged with the first component; a female screw portion to which a screw penetrating the second component is inserted, and a receiving portion provided on the first component to which the engaging portion is engaged. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0007]    The figures depict one or more implementations in accord with the present teachings, by way of example only, not by way of limitations. In the figures, like reference numerals refer to the same or similar elements. 
           [0008]      FIG. 1  illustrates a front perspective view of the display device  100 . 
           [0009]      FIG. 2  illustrates a rear perspective view of the display device  100 . 
           [0010]      FIG. 3  illustrates an exploded view of the display device  100 . 
           [0011]      FIG. 4  illustrates a perspective view showing the front cabinet and the metal plate. 
           [0012]      FIG. 5  illustrates a perspective view of the metal plate when arranged at the lower side of the front cabinet. 
           [0013]      FIG. 6  illustrates an enlarged view of the area B in  FIG. 5 . 
           [0014]      FIG. 7  illustrates an enlarged view of the area A in  FIG. 3 . 
           [0015]      FIG. 8  illustrates an enlarged view of the area C in  FIG. 7 . 
           [0016]      FIG. 9  illustrates a perspective view showing a first assembling step of the metal plate and the front cabinet. 
           [0017]      FIG. 10  illustrates a perspective view showing a second assembling step of the metal plate and the front cabinet. 
       
    
    
     DETAILED DESCRIPTION 
       [0018]    In the following detailed description, numerous specific details are set forth by way of examples in order to provide a thorough understanding of the relevant teachings. However, it should be apparent to those skilled in the art that the present teachings may be practiced without exemplary details. In other instances, well known methods, procedures, components, and/or circuitry have been described at a relatively high-level, without detail, in order to avoid unnecessarily obscuring aspects of the present concepts. In exchange for the present disclosure herein, the Applicants desire all patent rights described in the claims. Therefore, the patent rights are not intended to be limited or restricted by the following detailed description and accompanying figures. 
         [0019]      FIG. 1  illustrates a front perspective view of the display device  100 . The display device  100  has a LCD (Liquid Crystal Display) panel  1 , the size of which is longer in the horizontal side compared to vertical side, and a cabinet  2  which accommodates the panel  1 . The front side of the cabinet  2  has an opening  20  so as to make displaying surface  10  of the LCD panel  1  viewable. 
         [0020]    As shown in  FIGS. 1 and 2 , the cabinet  2  is consisted by connecting the front cabinet  3  and back cabinet  4 . 
         [0021]    The front cabinet  3  is formed by a lateral frame portion  31  which covers the lateral side of the LCD panel  1 , and the front frame portion  32  which covers the front peripheral portion of the LCD panel  1 . The back cabinet  4  is formed by a side portion  41  which covers the lateral side of the LCD panel  1  and the back portion  42  which covers the back side of the LCD panel. 
         [0022]    As shown in  FIG. 3 , a plurality of metal plate  5  is arranged inside the cabinet  2 . The metal plate  5   a  is arranged in the upper side, metal plate  5   b  is arranged in the lower side, the metal plates  5   c  and  5   d  are arranged in the left side and the metal plates  5   e  and  5   f  are arranged in the right side (see  FIG. 4  also). 
         [0023]    As shown in  FIG. 5 , each of the metal plate  5  has a first flat portion  51  and the second flat portion  52 . The portions  51  and  52  are formed perpendicular to each other. When the metal plate  5  is assembled to the front cabinet  3 , the first flat portion  51  faces the side frame portion  31  of the front cabinet  3 , the second flat portion  52  daces the front frame portion  32 . 
         [0024]    As shown in  FIGS. 1 to 3 , in the side portion  41  of the back cabinet  4 , a plurality of penetrating holes  43  for inserting the screw components are provided. As shown in  FIGS. 5 and 6 , in the first flat portion  51  of the metal plate  5 , a plurality of female screw components  53  are provided. 
         [0025]    The first flat portion  51  is extended from the front side to the back cabinet  4  side. In the back side of the flat portion  51 , as shown in  FIG. 6 , protrusion  54  is formed in an area facing the penetrating holes  43 . The tip portion of the female screw portion  53  is formed in the protrusion  54 . 
         [0026]    As shown in  FIG. 6 , an engaging portion  55  is formed on the second flat portion  52  of the metal plate  5 . In the second flat portion  52 , a slit  522  which extends from the tip  521  of the portion  52  to the first flat portion  52  is provided. In the edge of the slit  522 , engaging portion  55  is provided toward the direction  59  (see  FIG. 6 ). In the second flat portion  52  of the metal plates  5   a  and  5   b,  four engaging portions  55  are provided thereon, as shown in  FIG. 5 . In the second flat portion  52  of the metal plates  5   c  to  5   f,  two engaging portions  55  are provided thereon. 
         [0027]    As shown in  FIG. 8 , in the front frame portion  32  of the front cabinet  3 , a receiving portion  33 , to which the engaging portion  55  is engaged, is formed thereon. In the inner side of the front frame portion  32 , a protrusion  34  is formed. In the protrusion  34 , a plurality of receiving portions  33  are provided in the direction  39  (see  FIG. 8 ). In the frame portion  32 , receiving portions  33  are provided in  16  places corresponding to  16  engaging portions  55  provided on the metal plate  5 . 
         [0028]    As shown in  FIG. 8 , in the front frame portion  32  of the front cabinet  3 , a triangular prism shaped protrusion  35  is provided so as the metal plate  5  contacts this portion  35 . In the front frame portion  32 , two protrusions  35  are provided. 
         [0029]    As shown in  FIG. 6 , in the second flat portion  52  of the metal plate  5 , a receiving portion  56  is provided thereon. When the engaging portion  55  of the metal plate  5  and the receiving portion  33  of the front frame portion  32  are engaged, the protrusion  35  engages to the receiving portion  56 . 
         [0030]    When engaging the engaging portion  55  of the metal plate  5  and the receiving portion  33  of the front frame portion  32 , first, the protrusion  34  of the front frame  32  is penetrated to the slit  522  of the metal plate  5 . Thereby, the surface of the second flat portion  52  of the metal plate  5  is overlapped to inner surface of the front frame  32 . Hereby, the receiving portion  33  formed on the protrusion  34  and the engaging portion  55  of the metal plate  5  faces each other. The receiving unit  56  of the metal plate  5  is formed away from the protrusion  35 . 
         [0031]    Then, as shown in  FIG. 10 , by sliding the metal plate  5  toward the direction  59 , the engaging portion  55  of the metal plate  5  is inserted to the receiving portion  33  of the front frame  32 . Thereby, the engaging portion  55  and the receiving portion  33  are engaged. 
         [0032]    Since the protrusion  35  is fitted and engaged to the receiving portion  56 , the engagement between the engaging portion  55  in the metal plate  5  and the receiving portion  33  in the front frame  32  is strengthen. Thereby, the position of the metal plate  5  is stable against the front cabinet  3 . This can ease the assembling of the front cabinet  3  and the back cabinet  4 , for example, insertion of the screwing component to the female screw portion  53  of the metal plate  5  is eased. 
         [0033]    In the first flat portion  51  of the metal plate  5 , a bent portion  57  is formed in its rear (back cabinet  4 ) side as shown in  FIG. 6 . The bent portion  57  is hooked to the rear surface of the LCD panel  1 . 
         [0034]    By this, the bent portion  57  of the metal plate  5  is hooked to the rear side of the LCD panel  1  in a state the metal plate  5  is connected to the front cabinet  3 . Thereby, the metal plate  5  is preliminary fixed to the LCD panel  1 . This eases the assembling of the front cabinet  3  and the rear cabinet  4 . 
         [0035]    It is desirable that the bent portion  57  has elasticity. By this, the LCD panel  1  is biased forward due to an elastic force of the bent portion  57 . Thereby, the front cabinet  3  is fixed to the LCD panel  1  before the front cabinet  3  and the back cabinet  4  are connected. Thereby, the assembling of the front cabinet  3  and the back cabinet  4  is eased. 
         [0036]    According to the above structure, it is unnecessary to provide female screw portion to the front frame  32  as in the conventional display devices. Thereby, it is possible to make width of the front frame  32  smaller. 
         [0037]    Since the engaging structure consisted by the engaging portion  55  and the receiving  33  is provided in a space between the second flat portion  52  of the metal plate  5  and the frame portion  32  of the front cabinet  3 , it is possible to make a clearance between the side surface of the LCD panel  1  and the side wall  23  of the cabinet  2  small. By this, the width of the frame  32  can be made small. 
         [0038]    The above described display device can be applied to a video wall, which is consisted by a plurality of display devices aligned in matrix. Since the width of the frame can be made small in the above display device, it can make the distance between the display screens of the neighboring display devices in the video wall. 
         [0039]    In the above described display devices, an external force applied to the cabinet  2  can be absorbed by metal plate  5 . The metal plate  5  is L-shaped and it is hard to bend. Thus, the cabinet  2  is hardly bent by an external force. Further, the metal plates  5   a,    5   b  are extended along the upper wall and lower wall of the cabinet  2  respectively. Thus, the upper wall and lower wall of the cabinet  2  are strengthening. 
         [0040]    By connecting the back cabinet  4  and the metal plate  5  by inserting a screw to the female screw component  53  of the metal plate  5 , the first flat portion  51  of the metal plate  5  is pulled toward the side portion  41  of the back cabinet  4 . Since the metal plate  5  is L-shaped, by this, the second flat portion  52  of the metal plate  5  is pulled toward the back cabinet  4 . This can ease the frame portion  32  of the front cabinet  3  contacting the display screen  32 . 
         [0041]    In the first flat surface  51  of the metal plate  5 , the protruding portion  54  is formed its rear side, and the female screw portion  53  is formed in the protruding portion  54 . Thus, the metal plate  5  and the back cabinet  4  can be connected strongly without making the space between the side surface of the LCD panel  1  and the cabinet  2 . 
         [0042]    Other implementations are contemplated. For example, above implementation can be applied not only to the display device having the LCD panel  1 , but also to the display device having a plasma display panel, OLED display panel, or Electro-Luminescence panels etc. 
         [0043]    The engaging structure consisted by the engaging portion  55  and the receiving portion  33  may be provided between the first flat portion  51  of the metal plate  5  and the side surface  31  of the front cabinet  3 . In this case, the metal plate  5  does not have to be L-shaped, but may be a plate-like structure.