Patent Publication Number: US-2006006296-A1

Title: Wall mounting support for display unit

Description:
BACKGROUND OF THE INVENTION  
      1. Field of the Invention  
      The present invention relates to a wall mounting support for a display unit, which is suitable to fix a display to a wall, for example, for a liquid crystal display unit, a plasma display unit and the like that have a large flat thin display screen.  
      2. Description of Related Art  
      A display unit having a large flat thin display screen is used by placing on a floor with the use of stands or by fixing to a wall. In the latter case, in order to fix the display screen to the wall, a wall mounting support is generally disposed between the rear of the display unit and the wall. Specifically, in a wall mounting support in a related art, a hook member is protrudingly formed on a panel-like body to be fixed to a wall and is made to fitted to a mounting hole formed on the rear of a display unit body, thereby fixing the display unit to the wall surface. Alternatively, a panel-like body is divided into a panel member to be fixed to the wall surface etc. and a hook member, and both members are joined with a hinge mechanism, so that a mounting angle of a display unit to the wall surface etc. is adjustable up and down.  
      There is also known a wall mounting bracket for a flat display unit, which is disclosed in Japanese Patent Application Publication No. Hei 11-202778. This wall mounting bracket for a flat display unit is configured as follows. Recess portions are provided on the rear of the both side surfaces of the flat display unit, and supporting shafts and mounting screw holes are provided on the side surfaces of the recess portions. On an engaging plate arranged so as to correspond to the side surfaces of the both recess portions of the flat display unit, there are inverse L-shaped grooves into which the supporting shafts are inserted to support; and a plurality of mounting holes for angular positioning, which are arranged on a circular arc that is drawn around the supporting shaft and correspond to the mounting screw holes of the flat display unit. Two symmetrical and approximately L-shape wall mounting brackets are provided, which have wall mounting holes orthogonal to the engaging plate. The two wall mounting brackets for the right and left are fixed to the wall by inserting screws from the wall mounting holes to a wall, and the supporting shafts are inserted in the reverse L-shaped grooves in the right and left wall mounting brackets to determine a tilt angle. After that, the flat display unit is fixed to the wall mounting brackets by inserting screws from the angular positioning mounting holes to the mounting screw holes of the flat display unit. It is therefore possible to provide the wall mounting bracket having a tilt angle adjustment mechanism, which can fix a display unit on a wall so as not to enter a ceiling light to a field of vision of a user.  
      However, such wall mounting support for a display unit in the related art suffers from the following drawbacks. In general, the main purpose of purchasing such a large-screen display unit as to be wall-mounted is video viewing at homes, as a home theater. For that reason, to fulfill audio visual (AV) functions corresponding to high image quality TV broadcasts and digital versatile discs (DVDs) software of movies and so on, many externally connecting terminals are disposed at a lower part of the rear of the display unit in order to connect many connecting cables, such as a broadcast signal input cable, a video signal input cable from a video unit and a DVD unit, etc., or an audio signal output cable for output to an external speaker.  
      Accordingly, the wall mounting support for a display unit in the related art, in which the hook member is protrudingly formed on the panel-shaped body, is difficult to change a tilt of the display unit. For that reason, when connecting cable of added external equipment is required, it is necessary to temporarily remove the display unit from the panel-like body. Specifically, the connection of cables on the rear of the display unit has to be done before mounting the display unit to the wall. Thereafter, at the time of cable replacement and additional connection for improving system, the display unit has to be removed from the wall mounting support. Under the weight of a large display unit, this is a two-man operation. That is, an ordinary user cannot handle it solely, and it is necessary to ask a specialty store, a shop, or an engineering firm. There is also a drawback that the direction of the display screen is difficult to be changed after installation.  
      Additionally, in the wall mounting support bracket of a display unit disclosed in the above publication, after mounting the display unit, the tilt of the display screen can be changed by changing the screwing positions provided on the side surface of the display unit. Once the tilt angle has been set, however, a user cannot change the tilt angle of the display unit that is being mounted on the wall mounting bracket. It is therefore not easy to perform the operation of connecting a coupling cable to an external connecting terminal in response to addition of external equipment.  
      To overcome the above drawbacks, the present invention aims at providing a wall mounting support for a display unit, which is capable of setting a tilt of a screen of a display unit easily. In addition, even after mounting the display unit to a wall with the wall mounting support, a user can make a cable connection to external equipment added by himself/herself.  
     SUMMARY OF THE INVENTION  
      According to one aspect of the invention, there is provided a wall mounting support for a display unit including: a hook unit fixed to the rear of a display unit, having two sets of hooks and engaging sections, disposed on the right and left sides of the hook unit, respectively; and a plate unit fixed to a wall, having two sets of engaging shafts engaging with the hooks and tilting attachments engaging the engaging sections, disposed on the right and left sides of the plate unit, respectively, wherein the hook on the rear of the display unit is pivotally hung on the engaging shaft of the plate unit and the tilting attachment is provided so as to have a predetermined space between the wall and a lower part of the lower part of the display unit when the tilting attachment engages with the engaging section.  
      According to the wall mounting support for a display unit of the present invention constructed as above, the hook of the hook unit disposed on the rear of the display unit is hung on the engaging shaft of the plate unit fixed to the wall, and the display unit is pivotally hung around the engaging shaft and tilted upward at a predetermined angle by the tilting attachment. By providing the space between the wall and the lower part of the rear of the display unit, a cable connection from external equipment to an external connecting terminal is facilitated.  
      According to other aspect of the invention, in the above-mentioned wall mounting support for a display unit, the plate unit includes: a base plate; a first shaft disposed on the base plate; a first lever having the engaging shaft at one end, a second shaft at the approximately central portion, and a third shaft at the other end; and a second lever having one end pivotally engaging with the first shaft and the other end pivotally engaging the second shaft, wherein an attaching position of the third shaft of the first lever to the base plate can be changed.  
      According to the wall mounting support for a display unit of the present invention constructed as above, because the distance between the engaging shaft at the one end of the first lever and the wall is changed by changing the position to which the third shaft at the other end of the first lever is attached, the hook unit disposed on the rear of the display unit and the plate unit fixed to the wall can be connected at a lower part of the plate unit, so that the screen of the display unit can be fixed at a desirable tilt angle.  
      According to the wall mounting support for a display unit of the present invention, even after mounting the display unit to a wall, a user can make a cable connection between the display unit and external equipment to be added by himself/herself and also set a tilt of a screen of a display unit easily. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       FIG. 1  is an explanatory drawing of a state in which a plate unit and a hook unit according to an embodiment of the invention are separated;  
       FIG. 2  is a perspective view, transparently showing a display unit in the embodiment;  
       FIG. 3  is a perspective view of the hook unit fixed to a display unit in the embodiment;  
       FIGS. 4A  to  4 D are three-side views of the hook unit in the embodiment:  FIG. 4A  is a plan view;  FIG. 4B  is a front view;  FIG. 4C  is a side view; and  FIG. 4D  is a bottom view;  
       FIG. 5  is a perspective view of the hook unit in the embodiment;  
       FIGS. 6A and 6B  are a front view and a side view of the plate unit fixed to a wall in the embodiment, respectively;  
       FIG. 7  is a perspective view of the plate unit in the embodiment;  
       FIG. 8  is a perspective view, showing in an enlarged main portion of the plate unit in the embodiment;  
       FIGS. 9A  to  9 C are explanatory drawings of an operation of connecting the plate unit to the plate unit;  
       FIGS. 10A  to  10 C are side views for explaining an operation in the embodiment:  FIG. 10A  shows a state of connection;  FIG. 10B  shows a state in the middle of pivoting; and  FIG. 10C  shows a state of engagement after pivoting;  
       FIGS. 11A  to  11 C are side views for explaining other operation in the embodiment:  FIG. 11A  shows a state of connection;  FIG. 11B  shows a state in the middle of pivoting; and  FIG. 11C  shows a state of engagement after pivoting; and  
       FIG. 12  is a perspective view of an appearance of an example of a display unit. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT(S)  
      Embodiments for implementing the a wall mounting support for a display unit according to the present invention will next be described with reference to FIGS.  1  to  12 . Referring to  FIG. 12 , reference numeral  1  indicates a large display unit mounted to a wall  100 , which is, for example, a plasma display unit (hereinafter referred to as a “display unit”). Video images from TV broadcasts etc., and video images through AV equipment externally connected are displayed on a display screen  2  attached to the front of this display unit  1 .  FIG. 2  is a perspective view showing a wall mounting support for a display unit according to the embodiment, in which the display unit  1  of  FIG. 12  is transparently viewed from the display screen  2  side. As shown in  FIG. 1 , the wall mounting support composed of two divided structures of a hook unit  20  fixed to a rear cover  3  of the display unit  1  (see  FIG. 3 ) and a plate unit  30  fixed to the wall  100 . Specifically,  FIG. 2  illustrates a state in which the hook unit  20  and the plate unit  30  are connected and fixed, and the display screen  2  of the display unit  1  is attached approximately parallel with the wall  100 .  
      The hook unit  20  will next be described with reference to FIGS.  2  to  5 . The hook unit  20  has an approximately symmetry shape. As for approximately symmetry parts, only one of the right-hand and left-hand parts will be described. Common parts will be described by eliminating a symbol “R (right)” or “L (left)” from their respective reference numerals.  FIG. 3  is a perspective view when the display unit  1  with the hook unit  20  integrally attached thereto is viewed from the rear.  FIGS. 4A  to  4 D illustrate the hook unit  20 , which is removed from the rear cover  3  of the display unit  1  shown in  FIG. 3 .  FIG. 5  is a perspective view of the hook unit  20 . Specifically, FIGS.  2  to  4 D are drawings illustrating the hook unit  20  in combination with a woofer speaker unit described later.  FIG. 5  is a drawing illustrating only the hook unit  20 , from which the woofer speaker is removed.  
      Referring to  FIG. 3 , the hook unit  20  is disposed on the rear cover  3  of the display unit  1 , and composed of two brackets  21 R and  21 L, a stay  22 , and a support plate  23 , etc. In  FIG. 3 , reference numeral  4  indicates a woofer speaker unit (hereinafter referred to simply as a “woofer unit”), which contains in a box enclosure a speaker for low frequency band.  
      As shown in  FIG. 4A  and  FIG. 5 , the bracket  21 R is obtained by performing surface treatment to a metal, such as a steel plate, which is bent in U-shape. As shown in  FIG. 4C  and  FIG. 5 , a hook  21   a  is disposed downward in the vicinity of the upper ends of side surfaces  21 - 2 ,  21 - 4 , and an opening  21   a - 1  of the hook  21   a  is formed on an edge  21 - 1  of the bracket  21 , and a recess portion  21   b  is formed so as to cut obliquely into the edge  21 - 1  from the tip of the hook  21   a . At this time, it is arranged so as to expand the opening width from the recess portion  21   b  to the opening  21   a - 1 . Further, a recess portion  21   i  is formed at an approximately central lower portion of the edge  21 - 1  of the bracket  21 R so that the edge  21 - 1  is slightly scraped, and a projection  21   h  having an approximately semicircular arc is formed in the vicinity of a lower end of the bracket  21 R. At a position above the projection  21   h , a lock claw  21   d  having an upward opening  21   d - 1  is formed to project from the edge  21 - 1 , and the opening is extended from a lower end  21   d - 2  of the opening of the lock claw  21   d  so as to cut into the edge  21 - 1  of the bracket  21 R in an approximately horizontal direction as shown in  FIG. 4C , thereby forming an engaging recess portion  21   e.    
      Further, holes  21   k ,  21   k  for attaching the rear cover  3  of the display unit  1  are formed on a side surface  21 - 3  of the bracket  21 R shown in  FIGS. 4A and 4B , and a screw hole for attaching an angle  24  to be described later is drilled in a side surface  21 - 4 . The side surface  21 - 3  is extended and bent at the lower end of the bracket  21 R so as to be fixed to the stay  22 . Further, a screw hole  21   f  is formed near the hook  21   a , a screw hole  21   g  is formed near the lock claw  21   d , and a screw hole  21   j  is formed at nearly the center of the projection  21   h . The bracket  21 L is manufactured symmetrically with the bracket  21 R, as shown in  FIGS. 4A  to  FIG. 5 .  
      The angles  24 R and  24 L are obtained by performing surface treatment to a metal, such as a steel plate, which is bent in L-shape. One surface of the respective angles is provided with a hole through which a screw is inserted to have engagement with the bracket and the other surface is provided with a long hole through which a screw is inserted to have engagement with a support plate  23  to be described later. The angle  24 R and the angle  24 L are manufactured as symmetrical parts.  
      The stay  22  is obtained by performing surface treatment to a metal, such as a steel plate, which is bent in L-shape, as shown in  FIG. 4A  to  FIG. 5 . Specifically, its both ends  22 - 1  and  22 - 2  have screw insertion holes as shown in  FIGS. 4A and 4D . The stay  22  is partially cut as a notch  22   a  located nearer the one end  22 - 1 , and a connector unit  25  is provided at the other end  22 - 2 . The connector unit  25  is composed of positioning pins  25   b ,  25   b , and a connector  25   a . A terminal pin (not shown) of the connector  25   a  is electrically connected to the above-mentioned woofer unit  4 . When the hook unit  20  integrally incorporating the woofer unit  4  is fixed to the rear cover  3  of the display unit  1 , the connector  25   a  can be fit in the corresponding speaker terminal of the display unit  1 .  
      The support plate  23  is obtained by pressing and bending an approximately rectangular metal, such as a steel plate, followed by being subjected to surface treatment. As shown in  FIG. 4B  and  FIG. 5 , two corners of the upper part of the steel plate, which is laterally long, are notched large, and the two corners of the lower part are notched small, resulting in forming a large U-shape. Thereafter, both of the right and left end sides are further bent to form outwardly extending edges  23 - 2  and  23 - 3 , and screw holes are provided thereon. The upper and lower edges of the support plate  23  are thinly bent to form bent portions  23 - 4  and  23 - 5  with respect to a surface  23 - 1  on the same side as the edges  23 - 2  and  23 - 3 . Further, on the surface  23 - 1  of the support plate  23 , as shown in  FIG. 5 , four cone-shaped recess portions  23   a ,  23   a , . . . , are formed to protrude from the same surface where the bent portions  23 - 4  and  23 - 5  are formed, and these recess portions have holes  23   b ,  23   b , . . . on their bottoms, respectively.  
      Referring to  FIG. 3  to  FIG. 4D , in the woofer unit  4 , a net section  4   a  having such a shape that two circles of the same radius are connected by a common outer tangent is disposed to be vertically long at nearly the center of a surface that is part of a curved surface of the approximately box enclosure. A woofer speaker, whose main range is a low frequency band, is disposed at the inside of the net section  4   a . Referring to  FIG. 4D , which is a bottom view, two duct ports  4   b ,  4   b  are formed on the bottom of the approximately box enclosure in order to reinforce bass tone, as a bass reflex type enclosure. On the rear of the woofer unit  4 , which is the opposing surface of the net section  4   a , two long grooves (not shown) and four recess portions (not shown) each having a screw hole on the bottom are formed so as to correspond to the bent portions  23 - 4 ,  23 - 5 , and the cone-shaped recess portions  23   a ,  23   a  . . . of the support plate  23 . Power supply wiring to the woofer speaker is pulled out to the exterior in such a manner so as not to damage the enclosure characteristic.  
      The hook unit  20  so constructed as mentioned above is assembled as follows. As shown in  FIG. 5 , first, the bracket  21 R to which the angle  24 R is screwed is disposed to stand on the end  22 - 1  of the stay  22 , and the bracket  21 L to which the angle  24 L is screwed is disposed to stand on the other end  22 - 2 . Then, the support plate  23  is placed between the angles  24 R and the angle  24 L, and screws are inserted from the long hole side of the angles  24 R and  24 L to screw holes formed at the edges  23 - 2  and  23 - 3  of the support plate  23 , thereby fastening the angles  24 R,  24 L and the support plate.  
      The woofer unit  4  can be attached to the hook unit  20  as follows. First, a cylindrical vibration proof rubber (not shown) is disposed at the holes  23   b ,  23   b , . . . on the bottom of the cone-shape recess portions  23   a ,  23   a , . . . of the support plate  23 . Then, the bent portions  23 - 4  and  23 - 5  on the upper and lower sides of the support plate  23  of the hook unit  20  shown in  FIG. 5  are fit into the two long grooves formed on the rear of the woofer unit  4 , and screws are inserted into the cylindrical rubber of the holes  23   b ,  23   b , . . . , for positioning and fixing. Thereafter, a power supply wiring  4   c  to the woofer unit  4  shown in  FIG. 4A  is laid in the U-shaped recess portion of the bracket  21 L, and connected to the terminal pin of the connector  25   a  provided at the stay  22 . Subsequently, by using holes  21   k ,  21   k  of the bracket  21  shown in  FIG. 4B , the hook unit  20  to which the woofer unit  4  is attached is fixed to the rear cover  3  of the display unit  1 , as shown in  FIG. 3 .  
      The plate unit  30  will next be described with reference to  FIG. 2  and  FIG. 6A  to  FIG. 8 . The plate unit  30  has an approximately symmetry shape. As for approximately symmetry parts, only one of the right-hand and left-hand parts will be described. Common parts will be described by eliminating a symbol “R (right)” or “L (left)” from their respective reference numerals.  FIGS. 6A and 6B  are a front view and a side view of the plate unit  30 , respectively.  FIG. 7  is a perspective view of the plate unit  30 .  FIG. 8  is a perspective view, showing an enlarged main portion of the plate unit  30  of  FIG. 7 . Referring to  FIG. 6A  to  FIG. 7 , the plate unit  30  includes a base plate  31  directly fixed to the wall  100 , first levers  32 R and  32 L, second levers  33 R and  33 L, stoppers  34 R and  34 L, and tilting attachments  35 R and  35 L, which are disposed on the right and left of the base plate  31 , respectively.  
      As shown in  FIG. 6A  to  FIG. 7 , the base plate  31  is obtained by bending the four sides of an approximately rectangular and relatively thick steel plate to be enforced and placed to be literally long. Swelled portions are formed on the right and left of a front surface  31 - 1  of the base plate  31  by forming emboss processed sections  31 R and  31 L shaped as an approximately vertical rectangle. The emboss processed section  31 L is provided with bearings  31   a ,  31   a , through which a first shaft  31   b  is inserted. A plurality of screw holes  31   b - 1  to  31   b - 3  are formed at different pitches in the vertical direction and arranged in the substantially central portion between the bearings  31   a ,  31   a . The bearings  31   a ,  31   a  are formed by, for example, forming two symmetrical semi-circular arc kerfs on the base plate  31 , and bending respective semi-circular portions so as to protrude, and then forming shaft-insertion holes therein. The screw hole  31   b - 1  is formed at the upper part of the emboss processed section  31 L so as to correspond to screw insertion holes of first and second levers  32  and  33  to be described later. The plurality of screw holes  31   b - 2 ,  31   b - 2 , . . . is arranged in relation to the fixing position of a bearing  36 L described later. The screw hole  31   b - 3  is disposed to fix a stopper  35 L described later.  
      Similar to the emboss processed section  31 L, the emboss processed section  31 R is provided with bearings  31   a ,  31   a , and screw holes  31   b - 1  and  31   b - 2  (see  FIG. 8 ), and a screw hole  31 - 3  for fixing the stopper  35 L to be described later, which are positioned symmetrically with the emboss processed section  31 L with respect to the center of the base plate  31 . A plurality of screw insertion holes  31   c ,  31   c , . . . for fixing the base plate  31  to the wall  100  are formed, on the base plate  31 , at the peripheral area and at the central line dividing the base plate  31  into the right and the left sides. A round hole  31   d  located at a lower center of the base plate  31 , as shown in  FIGS. 6 and 7 , is a hole used for inserting a wire cable into the display unit  1  in the case where it is possible to drill the hole in the wall  100 .  
      The first lever  32 L is made of a metal, such as a steel plate, having three surfaces  32 - 1 ,  32 - 2 , and  32 - 3 . These surfaces are formed by making a reverse T-shape cut line in a shorter side of an approximately rectangular plate, followed by bending in U-shape. An engaging shaft  32   a  is fixed to a tip portion between the opposing surfaces  32 - 1  and  32 - 3 . A second shaft  32   b  is pivotally disposed at nearly the center of the lever  32 L, and a third shaft  32   c  is pivotally disposed at a lower end portion. A long hole  32   d  in the shape of a circular arc, whose central axis is the central axis of the engaging shaft  32 , is formed on the side surface  32 - 1  near the engaging shaft  32   a  at the tip portion. A screw insertion hole  32   f  is formed on the surface  32 - 2 . This tip portion is fabricated in U-shape so that the reverse T-shape cut line is opened. A corner portion  32   e  shown in  FIG. 8  is formed at a position not to interfere with the first shaft  31   b  when the first lever  32 L is brought into nearly close contact with the base plate  31 , as shown in  FIG. 7 . A bearing  36 L for supporting the third shaft  32   c  is disposed at a lower end of the first lever  32 L.  
      In the bearing  36 L, as shown in  FIGS. 7 and 8 , holes for inserting the third shaft  31   b  are formed on U-shaped opposing surfaces  36 - 1  and  36 - 3 , and a long hole  36   a  for inserting a screw is formed on a surface  36 - 4 , which is approximately orthogonal to the surface  36 - 2  and extended in approximately parallel with the third shaft  31   b.    
      The second lever  33 L is obtained as follows. As shown in  FIGS. 7 and 8 , two elongate metal plates, such as steel plates, having holes at both ends are provided at two opposing ends of a rectangular plate so as to be in approximately H-shape. Both sides of the elongate plate are then bent in U-shape. The holes on both ends of the two elongate plates are used as holes for inserting the first shaft  31   b  and for inserting the second shaft  32   b , respectively. A screw insertion hole  33   a  is formed at the inner rectangular plate.  
      The stopper  34 L has the same shape as the stopper  34 R. That is, as shown on the right hand in  FIG. 7 , holes for allowing the tilting attachment  35 R described later to serve as a pivot axis is formed on U-shaped opposing surfaces  34 - 1  and  34 - 3 , and a screw insertion hole  34   a  is formed on a surface  34 - 4  that is extended so as to be approximately orthogonal to a surface  34 - 2  and approximately parallel with the pivot axis. A surface  34 - 5  extending from the surface  34 - 1 , and a surface  34 - 6  extending from the surface  34 - 3  are bent so as to be approximately parallel with the pivot axis of a tilting attachment  35 L, and recess portions  34   b ,  34   b  are formed at their end portions, serving as a receiver of the tilting attachment  35 L. The surfaces  34 - 1  and  34 - 3  are also provided with long holes  34   c ,  34   c.    
      The tilting attachment  35 L is a relatively thick steel wire and, as shown in  FIGS. 6A and 7 , has a short linear portion  35   a  held at the hole for inserting the stopper  34 L, and a long linear portion  35   b  opposing to the short linear portion  35   a . Opposite ends of the linear portions  35   a  and  35   b  are connected by a linear part and a crank part, respectively. A torsion coil spring is incorporated into the short linear portion  35   a , and is urged to engage with the recess portions  34   b ,  34   b  of the stopper  34 L, as shown in  FIG. 7 .  
      Likewise, the first lever  32 R, second lever  33 R, stopper  34 R, tilting attachment  35 R, and bearing  36 R are arranged on the emboss processed section  31 R. Here at, the second lever  33 R, stopper  34 R and bearing  36 R are fabricated in the same shape as the above-mentioned second lever  33 L, stopper  34 L and bearing  36 L. The first lever  32 R and tilting attachment  35 R are fabricated in a symmetrical shape with respect to the first lever  32 L and tilting attachment  35 L, respectively.  
      In the plate unit  30  so constructed as mentioned above, as shown in  FIG. 8 , one end of the second lever  33  is pivotally disposed at the first lever  32  via the second shaft  32   b , and the bearing  36  is pivotally disposed at a lower end of the first lever  32  via the third shaft  32   c . The other end of the second lever  33  is pivotally disposed at the bearing  31   a  disposed on the base plate  31  via the first shaft  31   b . When a tilt angle at which the screen  2  of the display unit  1  is approximately parallel with the wall  100  is approximately 0°, as shown in  FIG. 7 , a screw is inserted into the overlapped hole  32   f  of the first lever  32  and the hole  33   a  of the second lever  33 , and then screwed and fixed to the screw hole  31   b - 1  drilled in the base plate  31 . Further, a screw is passed through the long hole  36   a  of the bearing  36  to the lowermost screw hole (corresponding to the tilt angle of 0°) of the screw holes  31   b - 2 ,  31   b - 2 , . . . to fix the bearing  36 . Thereby, the engaging shaft  32   a  of the first lever  32  is set to the position closest to the base plate  31 .  
      The stopper  34  on which the tilting attachment  35  is attached, as shown in  FIG. 7 , is fixed on the base plate  31  by inserting a screw from the screw insertion hole  34   a  to the screw holes  31   b - 3  of the base plate  31 . At this time, the torsion coil spring (not shown) is inserted into the tilting attachment  35 . This spring usually urges the tilting attachment  35  to engage with the recess portions  34   b ,  34   b  of the stopper  34 . In the foregoing description, the bearing  36  and stopper  34  are merely fixed with screws to the base plate  31 , however it is not necessary to limit to this configuration and other arrangement may be employed. For example, projections may be provided at portions where the bearing  36  and the stopper  34  have contact with the base plate  31 , and long holes are may be formed so as to correspond to these projections on the base plate  31 . Under engagement between the projections and the long holes, they may be screwed to each other so as to prevent displacement.  
      The assembly of the hook unit  20  to the plate unit  30  will next be described with reference to  FIG. 1 ,  FIG. 3 ,  FIG. 7 , and  FIGS. 9A  to  9 C. Referring to  FIG. 7 , first, the plate unit  30  so constructed as mentioned above is fixed to the wall  100  by inserting wood screws, or general screws if an anchor bolt has already been buried in the wall  100 , into the holes  31   c ,  31   c , . . . of the base plate  31 . At this time, the engaging shafts  32   a ,  32   a  of the first levers  32 L and  32 R have to be kept approximately parallel to each other. Referring to  FIG. 9A , the display unit  1  with the hook unit  20  fixed to the rear cover  3  (see  FIG. 3 ) is held in approximately parallel with the wall  100 . Referring to  FIG. 1  and  FIG. 9B , the display unit  1  is brought close to the plate unit  30 , while holding the recess portion  21   i  provided at the edge  21 - 1  of the bracket  21  of the hook unit  20  (see  FIG. 4C ) so as to oppose to the tilting attachment  35 .  
      Referring to  FIG. 9B , the recess portion  21   i  is brought into contact with the tilting attachment  35 . Thereafter, as indicated by the arrows, the display unit  1  is lifted in such a manner that the tilting attachment  35  is pushed up by the recess portion  21   i . Referring to  FIG. 9C , the hook  21   a  of the hook unit  20  is hung on the engaging shaft  32   a  of the plate unit  30 , thereby hanging the display unit  1  (see  FIG. 1 ). Finally, in the state shown in  FIG. 9C , a screw (not shown) is inserted and screwed into the arcuately shaped long hole  32   d  of the first lever  32  and the screw hole  21   f  near the hook  21   a  on the upper part of the bracket  21 , and further a screw (not shown) is inserted and screwed into the long hole  34   c  disposed at the stopper  34  and the screw hole  21   j  at the projection  21   h  on the lower part of the bracket  21 . Thereby, the hook unit  20  and the plate unit  30  can be connected firmly, so that the display unit  1  is integrally fixed to the wall  100  without rattle.  
      The wall mounting support so constructed as mentioned above will be described with reference to  FIGS. 10A  to  10 C.  FIG. 10A  illustrates the state in which the display unit  1  is fixed in approximately parallel with the wall  100  (see  FIG. 9C ). First, in the state of  FIG. 10A , the screw inserted into the long hole  34   c , which connects the hook unit  20  and the plate unit  30  at a lower part of the wall mounting support, is removed for releasing fixation. At this time, the screw inserted into the arcuately shaped long hole  32   d  is slightly loosen. As a result, the display unit  1  can be hung so as to be able to pivot at the engaging shaft  32   a  of the first lever  32  of the plate unit  30 .  
      Referring to  FIG. 10B , the lower end of the display unit  1  is held and lifted so as to depart from the wall  100  in the direction indicated by the arrow A. At this time, the tilting attachment  35  is urged in the direction indicated by the arrow B in  FIG. 10B . Subsequently, the lower end of the display unit  1  is further lifted from the state shown in  FIG. 10B  to the direction indicated by the arrow A in  FIG. 10C , so that the tilting attachment  35  is hooked in the opening  21   d - 1  of the lock claw  21   d  of the bracket  21  in the hook unit  20 . Finally, the holding of the lower end of the display unit  1  is released. As a result, as shown in  FIG. 10C , under the weight of the display unit  1 , the tilting attachment  35  slides from the lower end  21   d - 2  of the opening of the lock claw  21   d , while being urged under spring urging force, to engage with the engaging recess portion  21   e  that is formed to cut into the edge  21 - 1  of the bracket  21 .  
      In the state of  FIG. 10C , the tilting attachment  35  is urged by the spring incorporated into the stopper  34  in the direction indicated by the arrow B, and the engaging recess portion  21   e  is abutted to engage with the tilting attachment  35  under the weight of the display unit  1 . Accordingly, there is little possibility that the tilting attachment  35  is disengaged from the state in  FIG. 10C . Therefore, ensuring a sufficient space against the wall  100  below the rear cover  3  of the display unit  1  shown in  FIG. 10C  can be safely performed even by a user. This also enables safe and easy cable connection operation for adding external equipment to the connection terminal disposed on the rear cover  3 . When the display unit  1  is maintained in the state shown in  FIG. 10C  for a long period of time, as needed, a screw is screwed into the hole  21   g  near the lock claw  21   d , and the head of the screw narrows the opening  21   d - 1 , thereby preventing the tilting attachment  35  from slipping off.  
      After connecting the cable, the display unit  1  is slightly lifted in the direction indicated by the arrow A in  FIG. 10C , so that the tilting attachment  35  is released from the engagement with the engaging recess portion  21   e . The user lifts the tilting attachment  35  to above the opening  21   d - 1  of the lock claw  21   d , and releases his/her hold. As a result, the display unit  1  returns to the state in  FIG. 10A  under its own weight. Thus, a sequence of operations for engaging the tilting attachment  35 , as shown in  FIGS. 10A  to  10 C, can be safely performed by one action of holding and lifting the display unit  1  in the direction indicated by the arrow A. As needed, a screw is finally screwed into the long hole  34   c  for fixation.  
      As in the case of  FIGS. 10A  to  10 C, when the bearing  36  of the plate unit  30  is constructed so that the display unit  1  is approximately parallel with the wall  100 , only one operation of pivoting the display unit  1  is needed to provide therebelow a sufficient space against the wall  100 . Therefore, the user can solely and safely connect the cable to the connecting terminal on the rear cover  3  of the display unit  1 .  
      A tilt fixing function of the display unit by the wall mounting support in this embodiment will next be described with reference to  FIGS. 11A  to  11 C. Compared to the case where the length between the first shaft  31   b  and the third shaft  32   c  is L (see  FIG. 10A ) when the display unit  1  is approximately parallel with the wall  100 , as shown in  FIGS. 10A  to  10 C, the plate unit  30  of the wall mounting support shown in  FIGS. 11A  to  11 C has a length of L−Δ, which is obtained by reducing in the amount of a length Δ.  
      Referring to  FIG. 8 , first, in the state in which the plate unit  30  is fixed to the wall  100  without hanging the display unit  1 , the bearing  36  of the first lever  32  is lifted in the direction indicated by the arrow A, and the screw, which has been inserted for fixing at the lowermost one of the screw holes  36   b - 2 ,  36   b - 2 , . . . , of the base plate  31  in the foregoing example, is inserted into the screw hole  36   b - 2  at a higher position corresponding to a predetermined tilt angle of the display screen  2 . As a result, the engaging shaft  32   a  at the upper end of the first lever  32  is pivoted and disposed so as to depart from the base plate  31  in the direction indicated by the arrow B shown in  FIG. 8 .  
      In the same manner as in the foregoing example in  FIGS. 10A  to  10 C, the hook  21   a  of the hook unit  20  fixed to the rear cover  3  of the display unit  1  is hung on the engaging shaft  32   a  of the plate unit  30 , thereby hanging the display unit  1  (see  FIG. 11A ). Here, in the display unit  1  with the hook unit  20  fixed to the rear cover  30 , the center of gravity G of the whole is located toward beneath the rear cover  3  of the display unit  1 , as shown in  FIG. 11A . Hence, the tilt state of the display unit  1  is stable, and the lower end of the display unit  1  is relatively close to the wall  100 , and it naturally make a tilt angle θ (the tilt of the screen). When the length L−Δ in  FIG. 11A  is small, with the display unit  1  hung, as shown in  FIG. 11A , the projection  21   h  on the lower part of the bracket  21  of the hook unit  20  is brought into contact with the surface  31 - 1  of the base plate  31 , thereby preventing a large pivot action of the display unit  1 .  
      Subsequently, a screw is inserted into the arcuately shaped long hole  32   d  formed at the upper end of the first lever  32  of the plate unit  30  and the screw hole  21   f  near the hook  21   a  on the upper part of the bracket  21  of the hook unit  20 , and further a screw is inserted into the long hole  34   c  formed at the stopper  34  of the plate unit  30  and the screw hole  21   j  formed at the projection  21   h  on the lower part of the bracket  21  of the hook unit  20 . Thereby, the hook unit  20  and the plate unit  30  can be connected firmly, so that the display unit  1  is integrally fixed to the wall  100  without rattle.  
      Thus, the engaging shaft  32   a  at the tip of the first lever  31  can be departed from the base plate  31  by changing the mounting height of the bearing  36 , and decreasing the length between the first shaft  31   b  and the third shaft  32   c , as shown in  FIG. 11A , by the amount of the length Δ than the length L shown in  FIG. 10A . In this state, by fixing the hook unit  20  and the plate unit  30  at a lower part of the wall mounting support, the tilt angle θ of the display unit  1  can be set to a large value.  
      Additionally, it is possible to make a cable connection to the external connecting terminal at the lower part of the rear cover  3  of the display unit  1  that is set so as to have the tilt angle θ, in the same manner as in the foregoing example in  FIGS. 10A  to  10 C. Referring to  FIG. 11A , first, the screw inserted into the long hole  34   c , which connects the hook unit  20  and the plate unit  30  at a lower part of the wall mounting support, is removed for releasing fixation, so that the display unit  1  is hung so as to be able to pivot. Next, the lower end of the display unit  1  is held and pivoted so as to depart from the wall  100  in the direction indicated by the arrow A in  FIG. 11B . Subsequently, the lower end of the display unit  1  is further pivoted in the direction indicated by the arrow A in  FIG. 10C , so that the tilting attachment  35  is fit in the opening  21   d - 1  of the lock claw  21   d  of the bracket  21  in the hook unit  20 . Finally, the holding of the lower end of the display unit  1  is released, and the tilting attachment  35  is brought into engagement with the engaging recess portion  21   e  ( FIG. 1C ). In the state of ensuring a sufficient space between the rear cover  3  of the display unit  1  and the wall  100 , the cable connection to external equipment can be performed safely.  
      As in the case in  FIGS. 11A  to  11 C, the tilt angle made between the display unit  1  and the wall  100  can be changed easily by changing the mounting height of the bearing  36  of the plate unit  30 . In addition, a sufficient space against the wall  100  is ensured by pivoting the display unit  1 .  
      In accordance with the above wall mounting support for a display unit, the user can perform solely and safely the cable connection to external equipment, even after mounting the display unit  1  to the wall  100 . Moreover, it is easy to set the display unit  1  to approximately parallel with the wall or to set its angle of view so as to have a tilt angle.  
      While it has been described that the tilting attachment  35  is combined with the stopper  34  on the base plate  31  side, it is easy to understand that the similar operational effect as in the foregoing example may be obtainable by disposing the tilting attachment  35  on the hook unit  20  side and the lock part engaged thereto on the base plate side.  
      Although the foregoing example has described that the tilting attachment  35  is disposed so as to stand against the base plate  31  by the torsion coil spring incorporated in the stopper  34 , instead of the torsion coil spring, other elastic body may be used for urging. Alternatively, no urging means may be incorporated because the tilting attachment  35  is pivoted and locked in drop fashion under the weight of itself. While the engagement between the tilting attachment  35  and the hook unit  20  has been described in the case where the tilting attachment  35  drops into the opening  21   d - 1  of the lock claw  21   d , any other arrangement may be employed without limiting to this. For example, a long hole and a lock member may be disposed on the side surface  21 - 2  of the bracket  21  of the hook unit  20 , and a hook-shaped tip of the tilting attachment  35  may be inserted in this long hole and the lock member locks to prevent it from slipping off. A variety of modifications can be employed for the tilting attachment and its lock structure.  
      While various embodiments of the a wall mounting support for a display unit in the present invention have been described above, it should be understood that they have been presented by way of example only, and not limitation. It will be understood by those skilled in the art that various changes in form and details can be made herein without departing from the spirit and scope of the invention.  
      The present invention contains subject matter related to Japanese Patent Application JP2004-205205, filed in the Japanese Patent Office on Jul. 12, 2004, the entire contents of which being incorporated herein by reference.