Patent Publication Number: US-2007096606-A1

Title: In-wall type multi-functional television set

Description:
BACKGROUND OF THE INVENTION  
      This application claims the priority of Korean Patent Application No. 2005-104119, filed on Nov. 2, 2005, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference.  
      1. Field of the Invention  
      The present invention relates to an in-wall type multi-functional television set that is embedded in a wall of a house and is accommodated in and withdrawn from the wall.  
      2. Description of Related Art  
      With rapid development of industry, a house is not considered simply as a residential area any more. For example, a television set is provided to be mounted on a wall of a kitchen or a bath so that people can view television programs during meal and bath times.  
      However, once the television set is installed, it is not generally possible to change its position and direction, causing inconvenience to viewers watching the television set. Further, in case the television set is installed in the kitchen or bath, an extra space for the television set is required, and the kitchen or bath looks smaller due to the television set.  
      On the other hand, when the television set is installed in a humid area such as the kitchen or bath, electric circuit components constituting the television set may be damaged due to water penetrating into the television set.  
     SUMMARY OF THE INVENTION  
      The present invention provides an in-wall type multi-functional television set which is automatically accommodated in and withdrawn from a wall and allows users to view a display device at a desired position and to perform various functions in addition to viewing the television set.  
      The present invention further provides an in-wall type multi-functional television set which is water-resistant in a humid area and requires a small space for installation.  
      According to an aspect of the present invention, there is provided an in-wall type multi-functional television set including: a fixed case which is stably fixed in a mounting recess of a wall of a house and has an opening at a front side of the fixed case; a main body which is provided in the fixed case and includes an accommodating part at a front side of the main body and a controller controlling the entire system; a display device which is electrically connected to the main body through a connection cable and displays an image; a horizontal adjusting part which is fixed between the fixed case and the main body such that the display device is horizontally provided; and a hinge assembly which allows the display device to be accommodated in and withdrawn from the accommodating part, and includes a first fixing bracket stably fixed to a rear side of the display device, a second fixing bracket stably fixed to a front side of the accommodating part, a first rotating part hinge-coupled to the first fixing bracket, and a second rotating part hinge-coupled to the first rotating part at one end, hinge-coupled to the second fixing bracket at the other end, and having an accommodating recess for accommodating the first rotating part while the display device is accommodated in the accommodating part.  
      The connection cable may pass through a portion of the display device corresponding to the first fixing bracket and a portion of the accommodating part corresponding to the second fixing bracket, and each of the first and second fixing brackets may include a slit part for allowing the connection cable to pass through each of the first and second fixing brackets.  
      Incised holes may be formed on portions on which the first and second rotating parts are hinge-coupled so that the connection cable can be smoothly moved when the connection cable passes through the hinge-coupled portions of the first and second rotating parts.  
      The first rotating part may have a passage for allowing the connection cable to pass through the first rotating part.  
      A first waterproof packing may be tightly interposed between the first fixing bracket and the display device to prevent water from penetrating into the display device, and a second waterproof packing may be tightly interposed between the second fixing bracket and the accommodating part to prevent water from penetrating into the accommodating part.  
      The second fixing bracket may be fixed to the accommodating part by means of a plurality of screws, at least one of which is fastened to the horizontal adjusting part through the accommodating part.  
      A driving unit may be provided between the first fixing bracket and the first rotating part so that the first fixing bracket and the first rotating part are rotatable to each other, a driving unit may be provided between the first rotating part and the second rotating part so that the first rotating part and the second rotating part are rotatable to each other, and a driving unit may be provided between the second rotating part and the second fixing bracket so that the second rotating part and the second fixing bracket are rotatable to each other.  
      The driving unit may include a first motor stably fixed at a portion of the first rotating part adjacent to the first fixing bracket, a first driving gear joined to a rotating shaft of the first motor, a first fixed gear meshing with the first driving gear and stably fixed at a rotation center of the first fixing bracket, a second motor stably fixed at a portion of the first rotating part  153  adjacent to the second rotating part, a second driving gear joined to a rotating shaft of the second motor, a second fixed gear meshing with the second driving gear and stably fixed at a rotation center of the second rotating part, a third motor stably fixed at a portion of the second rotating part adjacent to the second fixing bracket, a third driving gear joined to a rotating shaft of the third motor, and a third fixed gear  169  meshing with the third driving gear and stably fixed at a rotation center of the second fixing bracket.  
      The first through third motors may be electrically connected to the controller.  
      The hinge assembly may be provided such that the first and second rotating parts are rotatable in a horizontal direction.  
      The fixed case may include a plurality of screw connection holes for connection with the horizontal adjusting part, and the horizontal adjusting part may include a plurality of adjusting holes which has a shape corresponding to a movement trajectory of the screw connection hole, which is caused by relative rotation between the horizontal adjusting part and the fixed case.  
      The main body may include: an input unit provided outside and having a plurality of input buttons; a television receiving circuit including a television tuner dividing received broadcast data into video and audio data, a video processor demodulating and outputting the video data outputted from the television tuner, and an audio output unit demodulating and outputting the audio data outputted from the television tuner, and the display device may include: a video driving circuit receiving a video signal outputted from the video processor and converting the video signal to video data; a panel receiving the video data from the video driving circuit and displaying an image; and a speaker receiving an audio signal outputted from the audio output unit and outputting the audio signal.  
      The main body may further include: a microphone converting voice to an electrical audio signal; an interphone processor outputting video and audio signals from information concerning a visitor received from an interphone and outputting an audio signal outputted from the microphone to the interphone; a video selector outputting any one of video signals inputted from the television tuner and the interphone processor to the video driving circuit; and an audio selector outputting any one of audio signals inputted from the television tuner and the interphone processor to the audio output unit.  
      The main body may further include: a microphone converting voice to an electrical audio signal; and a telephone circuit receiving an audio signal received from a telephone line, outputting the signal to the audio selector, and transmitting the audio signal outputted from the microphone through the telephone line.  
      The main body may further include a home automation interface connected to a computer controlling home automation and transmitting/receiving operation commands for operating apparatuses provided in a home. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
      The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings in which:  
       FIG. 1  is an exploded perspective view of an in-wall type multi-functional television set according to an embodiment of the present invention;  
       FIG. 2  is a partial cross-sectional view of the in-wall type multi-functional television set shown in  FIG. 1 ;  
       FIG. 3  is a front view for explaining a process of coupling a horizontal adjusting part to a fixed case in  FIG. 2 ;  
       FIGS. 4 and 5  are partial cross-sectional views showing a display device which is withdrawn from a wall in  FIG. 2 ;  
       FIG. 6  is an exploded perspective view of a hinge assembly shown in  FIG. 1 ;  
       FIG. 7  is a partial perspective view showing a waterproof structure between a main body and a second fixing bracket in  FIG. 6 ;  
       FIG. 8  is a plan view showing the hinge assembly shown in  FIG. 6  and a driving unit;  
       FIG. 9  is a perspective view showing the driving unit provided between a second fixing bracket and a second rotating part in  FIG. 8 ;  
       FIG. 10  is a perspective view of  FIG. 9 ;  
       FIG. 11  is a block diagram showing a configuration of a main body and a display device shown in  FIG. 1 ; and  
       FIG. 12  is a block diagram showing another configuration of the main body shown in  FIG. 11 .  
    
    
     DETAILED DESCRIPTION OF THE INVENTION  
      Exemplary embodiments in accordance with the present invention will now be described in detail with reference to the accompanying drawings.  
       FIG. 1  is an exploded perspective view of an in-wall type multi-functional television set according to an embodiment of the present invention.  FIG. 2  is a partial cross-sectional view of the in-wall type multi-functional television set shown in  FIG. 1 .  
      The in-wall type multi-functional television set  100  includes a fixed case  110 , a main body  130  accommodated in the fixed case  110 , a horizontal adjusting part  120  provided between the main body  130  and the fixed case  110  and coupled to each of the main body  130  and the fixed case  110 , and a display device  170  coupled to the main body  130  with a hinge assembly  150 .  
      The fixed case  110  includes an opening  111  and an inner space so that the main body  130  can be accommodated. A plurality of screw connection holes  112  for connection with the horizontal adjusting part  120  is formed on an inner surface of the fixed case  110 . The fixed case  110  is provided on a wall  10  of a room, such as a wall of a kitchen or a bath. For this purpose, a mounting recess  11  having a size corresponding to the size of the fixed case  110  is formed on the wall  10 . The fixed case  110  is accommodated and fixed in the mounting recess  11 . The fixed case  110  may be fixed to the mounting recess  11  with cement or the like. A lattice-like recess (not shown) may be formed on a rear surface of the fixed case  110  so that the fixed case  110  can be more securely fixed to the mounting recess  11 . A frame  115  is stably fixed to the fixed case  110  to support the edge of the main body  130 .  
      The main body  130  is equipped with a controller  141  for controlling the entire system, and includes an accommodating part  131  formed to accommodate the display device  170 . The display device  170  includes a panel  171  which is provided to display an image, and speakers  172  which are provided on both sides of the panel  171 . The display device  170  is mechanically coupled to the main body  130  with the hinge assembly  150 . For this purpose, screw connection holes are formed on a rear surface of the display device  170  to be coupled with a first fixing bracket  151  of the hinge assembly  150 , and a first connection part  175  is provided so that the first fixing bracket  151  can be inserted. In addition, screw connection holes are formed in the accommodating part  131  of the main body  130  to be coupled with a second fixing bracket  152  of the hinge assembly  150 , and a second connection part  132  is provided so that the second fixing bracket  152  can be inserted. Preferably, screws fastened to the second fixing bracket  152  are fastened to the second connection part  132  and at least one of the screws is fastened to the horizontal adjusting part  120  through the second connection part  132 . Hence, the display device  170  can be prevented from sagging downwards due to its weight when it is withdrawn from the accommodating part  131 . The main body  130  is electrically connected to the display device  170  through a connection cable  180  such as a flexible printed circuit board. The connection cable  180  passes through each of the first connection part  175  of the display device  170  and the second connection part  132  of the main body  130 .  
      The display, device  170  coupled to the main body  130  with the hinge assembly  150  is indirectly coupled to the fixed case  110 . Thus, in case the fixed case  110  is not exactly horizontally fixed when it is provided in the wall  10 , the display device  170  is not exactly horizontally adjusted. As a result, the display device  170  may be inclined when viewed by users. This can be adjusted to be level by the horizontal adjusting part  120  provided between the fixed case  110  and the main body  130 .  
      Referring to  FIG. 3 , the horizontal adjusting part  120  has a plate shape and includes a plurality of adjusting holes  121  which is fastened with screws to the screw connection holes  112  of the fixed case  110 . Each of the adjusting holes  121  has a shape corresponding to a movement trajectory of the screw connection hole  112 , which is caused by relative rotation between the horizontal adjusting part  120  and the fixed case  110 . That is, the adjusting hole  121  is formed such that even though the horizontal adjusting part  120  rotates about the fixed case  110  at a predetermined angle, the screw connection hole  112  remains located in the adjusting hole  121  and screws are connected to both of the screw connection hole  112  and the adjusting hole  121 . Preferably, the adjusting hole  121  has a trajectory so that the display device  170  can be freely horizontally adjusted. Even though the fixed case  110  is not exactly horizontally provided in the wall  10 , the display device  170  is not exactly horizontally adjusted. As a result, the display device  170  may be inclined when viewed by users. This can be adjusted to be level by the horizontal adjusting part  120  provided between the fixed case  110  and the main body  130 .  
      Referring to  FIG. 3 , the horizontal adjusting part  120  has a plate shape and includes a plurality of adjusting holes  121  which is fastened with screws to the screw connection holes  112  of the fixed case  110 . Each of the adjusting holes  121  has a shape corresponding to a movement trajectory of the screw connection hole  112 , which is caused by relative rotation between the horizontal adjusting part  120  and the fixed case  110 . That is, the adjusting hole  121  is formed such that even though the horizontal adjusting part  120  rotates about the fixed case  110  at a predetermined angle, the screw connection hole  112  remains located in the adjusting hole  121  and screws are connected to both of the screw connection hole  112  and the adjusting hole  121 . Preferably, the adjusting hole  121  has a trajectory so that the display device  170  can be freely horizontally adjusted. Even though the fixed case  110  is not exactly horizontally provided when it is provided in the wall  10 , the display device  170  can be adjusted to be horizontal by means of the adjusting hole  121  formed in the horizontal adjusting part  120 .  
      The display device  170  is configured to be withdrawn from the accommodating part  131  and to be adjusted in viewing angle as shown in  FIGS. 4 and 5 . For this purpose, the hinge assembly  150  includes a first fixing bracket  151  which is fixed to a rear surface of the display device  170 , a second fixing bracket  152  which is fixed to a front surface of the main body  130 , a first rotating part  153  which is hinge-coupled to the first fixing bracket  151 , and a second rotating part  154  which is hinge-coupled to the first rotating part  153  at one end and is hinge-coupled to the second fixing bracket  152  at the other end. As shown in  FIG. 2 , when the first and second rotating parts  153  and  154  are folded, the first rotating part  153  is positioned in the second rotating part  154  to minimize the size of the accommodating part  131  of the main body  130 . Thus, the second rotating part  154  includes an accommodating recess  155  for accommodating the first rotating part  153 .  
      As shown in  FIG. 5 , the first fixing bracket  151  and the first rotating part  153  are hinge-coupled to each other so that the display device  170  can be rotated about the first rotating part  153  at a maximum of 90 degrees in left and right direction. As a result, a user can view the display device  170  at any positions. The first and second rotating parts  153  and  154  are hinge-coupled to each other so that the first rotating part  153  can be accommodated in the accommodating recess  155  of the second rotating part as shown in  FIG. 2 , and be extended at 180 degrees about the second rotating part  154  as shown in  FIG. 5 . The second rotating part  154  and the second fixing bracket  152  are hinge-coupled to each other so that the second rotating part  154  can be positioned parallel to a front surface of the accommodating part  131  of the main body  130  as shown in  FIG. 2 , and be rotated to be perpendicular to the front surface of the accommodating part  131  of the main body  130  as shown in  FIG. 5 . In addition, preferably, the first fixing bracket  151  and the first rotating part  153 , the first rotating part  153  and the second rotating part  154 , and the second rotating part  154  and the second fixing bracket  152  are respectively hinge-coupled to each other so that the first and second rotating parts  153  and  154  can be rotated in a horizontal direction. Accordingly, the display device  170  can be supported even though it is withdrawn.  
      The structure of the hinge assembly  150  will be described in detail with reference to  FIG. 6 .  
      The first fixing bracket  151  includes first shaft support parts  151   a  which are protruded to the first rotating part  153  and are separated from each other. The rotating part  153  includes a second shaft support part  153   b  which is adjacent to the first fixing bracket  151  of a first base part  153   a  and is formed to be fit between the first shaft support parts  151   a . A first rotating shaft  156   a  is provided in the first shaft support parts  151   b  and the second shaft support part  153   b . That is, the first rotating shaft  156   a  is fit into the first shaft support parts  151   b  and the second shaft support part  153   b . A washer and a nut are joined to a screw tap formed on each of both ends of the first rotating shaft  156   a , such that the first fixing bracket  151  and the first rotating part  153  are hinge-coupled to each other.  
      The first rotating part  153  includes a third shaft support part  153   c  at an end of the first base part  153   a  which is adjacent to the second rotating part  154 . The second rotating part  154  includes fourth shaft support parts  154   b  which are provided at an end of a second base part  154   a  adjacent to the first rotating part  153  and are separated from each other to be disposed at both sides of the third shaft support part  153   c . The third and fourth shaft support parts  153   c  and  154   b  are formed such that the first rotating part  153  is not folded in a direction opposite to a direction in which the first rotating part  153  is folded toward the second rotating part  154 . A second rotating shaft  156   b  is provided in the third shaft support part  153   c  and the fourth shaft support part  154   b . That is, the second rotating shaft  156   b  is fit into the third shaft support parts  153   c  and the fourth shaft support parts  154   b . A washer and a nut are joined to a screw tap formed on each of both ends of the second rotating shaft  156   b , such that the first rotating part  153  and the second rotating part  154  are hinge-coupled to each other.  
      In addition, the second rotating part  154  includes a fifth shaft support part  154   c  at an end of the second base part  154   a  which is adjacent to the second fixing part  152 . The second fixing part  152  includes sixth shaft support parts  152   a  which are adjacent to the second rotating part  154  and are separated from each other to be disposed at both sides of the fifth shaft support part  154   c . The fifth and sixth shaft support parts  154   c  and  152   a  are formed such that the second rotating part  154  is not folded in a direction opposite to a direction in which the second rotating part  154  is folded when the second rotating part  154  and the main body  130  are positioned to form an angle of 90 degrees to each other. A third rotating shaft  156   c  is provided in the fifth shaft support part  154   c  and the sixth shaft support parts  152   a . That is, the third rotating shaft  156   c  is fit into the fifth shaft support parts  154   c  and the sixth shaft support part  152   a . A washer and a nut are joined to a screw tap formed on each of both ends of the third rotating shaft  156   c , such that the second rotating part  154  and the second fixing part  152  are hinge-coupled to each other.  
      The first fixing bracket  151  includes a slit part  157   a  for allowing a connection cable  180  withdrawn from the first connection part  175  of the display device  170  to pass through the first fixing bracket  151 . The second fixing bracket  152  includes a slit part  157   b  for allowing a connection cable  180  withdrawn from the second connection part  132  of the main body  130  to pass through the second fixing bracket  152 . Preferably, the connection cable  180  passing through the slit parts  157   a  and  157   b  passes through the hinge-coupled portions of the first and second rotating parts  153  and  154  and is provided along the first and second rotating parts  153  and  154  so as not to interfere with the process of folding and unfolding the first and second rotating parts  153  and  154 . Preferably, the hinge-coupled portions of the first and second rotating parts  153  and  154 , i.e., the second, third, and fifth shaft support parts  153   b ,  153   c , and  154   c  have incised holes  158  at their central portions. The incised holes  158  have a width larger than that of the connection cable  180 . The incised holes  158  separate the connection cable  180  from the first and three rotating shafts  156   a ,  156   b , and  156   c  so that the connection cable  180  can be smoothly moved. As a result, it is possible to prevent the connection cable  180  from being damaged by the first through three rotating shafts  156   a ,  156   b , and  156   c  when the first and second rotating parts  153  and  154  are rotated. The first rotating part  153  may have a passage so that the connection cable  180  can pass through the first rotating part  153 . The passage is formed by joining the base part  153   a  with a cover part  153   d  so that the connection cable  180  can pass through a space between the base part  153   a  and the cover part  153   d . Similarly, even though not shown in the drawing, the second rotating part  154  may have a passage so that the connection cable  180  can pass through the second rotating part  154 .  
      As the connection cable  180  passing through the slit parts  137   a  and  137   b  of the first and second fixing brackets  131  and  132  is provided, water may penetrate into the display device  170  and the main body  130  through the slit parts  137   a  and  137   b  and therefore cause damage to circuits. Such a case happens particularly when the in-wall type multi-functional television set  100  is installed in a humid area such as a kitchen or a bath. Thus, a first waterproof packing  159  is provided on a portion of the first fixing bracket  131  which is joined with the display device  170 , and a second waterproof packing  160  is provided on a portion of the second fixing bracket  152  which is joined with the main body  130 . Holes  159   a  and  160   a  are formed on the first and second waterproof packing  159  and  160  so that the connection cable  180  can pass through the first and second waterproof packing  159  and  160 . The first and second waterproof packing  159  and  160  are preferably made of a rubber.  
      A waterproof structure between the main body  130  and the second fixing bracket  152  will be described in detail with reference to  FIG. 7 . The second waterproof packing  160  is positioned between the second connection part  132  of the main body  130  and the second fixing bracket  152 , and the connection cable  180  is withdrawn from the second connection part  132  of the main body  130  and passes through the slit part  137   b  of the second fixing bracket  132  via the hole  160   a  of the second waterproof packing  160 . Small holes  160   b  and  160   c  are formed on opposing surfaces between the second connection part  132  and the second fixing bracket  152 . The small holes  160   b  and  160   c  are required in order that the second waterproof packing  160  may not float when tightly pressed. When the second connection part  132  and the second fixing bracket  152 , together with the second waterproof packing  160  interposed therebetween, are fastened with a screw, the second waterproof packing  160  is tightly pressed, thereby preventing water from penetrating through the slit part  157   b  of the second fixing bracket  152 . The waterproof structure between the main body  130  and the second fixing bracket  152  can be applied to a waterproof structure between the display device  170  and the first fixing bracket  151 .  
      The hinge assembly  150  may further include a driving unit for automation as shown in  FIG. 8 . The driving unit is used for automatic rotation between the first fixing bracket  151  and the first rotating part  153 , between the first rotating part  153  and the second rotating part  154 , and between the second rotating part  154  and the second fixing bracket  152 .  
      Referring to  FIG. 8 , a first motor  161 , which is stably fixed at a portion of the first rotating part  153  adjacent to the first fixing bracket  151 , a first driving gear  162 , which is joined to a rotating shaft of the first motor  161 , and a first fixed gear  163 , which meshes with the first driving gear  162  and is stably fixed at a rotation center of the first fixing bracket  151 , are provided between the first fixing bracket  151  and the first rotating part  153 . When the first driving gear  162  meshing with the first fixed gear  163  is rotated by the first motor  161 , the first rotating part  153  rotates about the first fixing bracket  151  along a rotation direction of the first driving gear  162  since the first fixed gear  163  is fixed at the rotation center of the first fixing bracket  151 .  
      A second motor  164 , which is stably fixed at a portion of the first rotating part  153  adjacent to the second rotating part  154 , a second driving gear  165 , which is joined to a rotating shaft of the second motor  164 , and a second fixed gear  166 , which meshes with the second driving gear  165  and is stably fixed at a rotation center of the second rotating part  154 , are provided between the first rotating part  153  and the second rotating part  154 . When the second driving gear  165  meshing with the second fixed gear  166  is rotated by the second motor  164 , the first rotating part  153  rotates about the second rotating part  154  along a rotation direction of the second driving gear  165  since the second fixed gear  166  is fixed at the rotation center of the second rotating part  154 .  
      A third motor  167 , which is stably fixed at a portion of the second rotating part  154  adjacent to the second fixing bracket  152 , a third driving gear  168 , which is joined to a rotating shaft of the third motor  167 , and a third fixed gear  169 , which meshes with the third driving gear  168  and is stably fixed at a rotation center of the second fixing bracket  152 , are provided between the second rotating part  154  and the second fixing bracket  152 . When the third driving gear  168  meshing with the third fixed gear  169  is rotated by the third motor  167 , the second rotating part  154  rotates about the second fixing bracket  152  along a rotation direction of the third driving gear  168  since the third fixed gear  169  is fixed at the rotation center of the second fixing bracket  152 . The first to third motors  161 ,  164 , and  167  are electrically connected to the main body  130  and are driven by a controller  141  provided in the main body  130 .  
      The structure of the driving unit will be described in detail with reference to  FIGS. 9 and 10 .  FIGS. 9 and 10  are enlarged views of the driving unit provided between the second rotating unit and the second fixing bracket.  
      Referring to  FIGS. 9 and 10 , a motor mounting recess  154   e  is formed at a portion of the second rotating part  154  adjacent to the second fixing bracket  152 . The third motor  167  is accommodated and fixed in the motor mounting recess  154   e . The third motor  167  may be fixed in the motor mounting recess  154   e  with typical adhesives. A rotation center of the third driving gear  168  is fit into the rotation shaft of the third motor  167 . Correspondingly, a third fixed gear recess  152   e  is formed at the rotation center of the second fixing bracket  152 , and a fixing shaft  169   a  of the third fixed gear  169  is inserted to the third fixed gear recess  152   e . The third fixed gear  169  and the third driving gear  168  mesh with each other. Such a structure can be applied to a driving unit provided between the first fixing bracket  151  and the first rotating part  153 , or between the first rotating part  153  and the second rotating part  154 . Since the hinge assembly  150  is equipped with the driving unit, the display device  170  can be automatically withdrawn, rotated, and accommodated. Further, an extra fixing unit is not required to support the withdrawn or accommodated display device  170 .  
      A configuration of the main body  130  and the display device  170  will be described with reference to  FIG. 11 .  
      The main body  130  includes a controller  141  for controlling the entire system, an input unit  142  for inputting operation commands, a television receiving circuit for processing broadcast signals received through a television antenna and outputting video and audio signals, and a power supply  146  for supplying electric power required for driving the system.  
      The controller  141  outputs a control signal to each unit according to operation commands inputted from a user to control the entire system.  
      The input unit  142  includes operation buttons which are arranged on an outer surface of the main body  130 , or are embedded in the main body  130  so that the operation commands can be input through a remote control. The input unit  142  transmits the operation commands to the controller  141 .  
      The television receiving circuit includes a television tuner  143 , which divides a broadcast signal into video and audio data, a video processor  144 , which demodulates and outputs the video data outputted from the television tuner  143 , and an audio output unit  145 , which demodulates and outputs the audio data outputted from the television tuner  143 . The television tuner  143  selects and receives a desired one of the broadcast signals received through the television antenna. The television tuner  143  may be configured to support at least one of NTSC (National Television Systems Committee) and PAL (Phase Alteration Line). The television tuner  143  may be further configured to support satellite-based DMB (Digital Multimedia Broadcasting).  
      The power supply  146  converts electric power supplied to a house into power required for driving the main body  130  and the display device  170 .  
      The display device  170  electrically connected to the main body  130  includes a video driving circuit  173 , which receives a video signal outputted from the video processor  144  through the connection cable  180  and converts the video signal to video data, a panel  171 , which receives the video data from the video driving circuit and displays an image, and a speaker  172 , which receives an audio signal outputted from the audio output unit  145  of the main body  130  and converts the audio signal to an audible sound. Since the display device  170  is equipped with the speaker  172 , the display device  170 , together with the panel  171  and the speaker  172 , is withdrawn and accommodated. The panel  171  is preferably a flat thin display unit such as a liquid crystal display.  
      The main body  230  may be configured as shown in  FIG. 12 .  
      Referring to  FIG. 12 , the main body  230  basically includes the units shown in  FIG. 11 . The main body  230  further includes a microphone  231 , an interphone processor  232 , a video selector  233 , and an audio selector  234 . The microphone  231  converts voice to an electrical audio signal. The interphone processor  232  outputs video and audio signals from information concerning a visitor received from an interphone provided at a door, and outputs an audio signal outputted from the microphone  231  to the interphone. The video selector  233  outputs any one of video signals inputted from the television tuner  143  and the interphone processor  232  to the video driving circuit  173 . The audio selector  234  outputs any one of audio signals inputted from the television tuner  143  and the interphone processor  232  to the audio output unit  145 .  
      When a visitor pushes a call button of the interphone, a user is notified that the visitor visits the user&#39;s house. When the user inputs a predetermined command through the input unit  142 , the controller  141  receives the command and drives the interphone processor  232 . The interphone processor  232  receives video and audio signals of the visitor received from the interphone and outputs the video signal to the video selector  233  and outputs the audio signal to the audio selector  234 . The video selector  233  is driven by the controller  141  and outputs the video signal inputted from the interphone processor  232  to the video driving circuit  173 . The audio selector  234  is driven by the controller  141  and outputs the audio signal inputted from the interphone processor  232  to the audio output unit  145 . Since the video driving circuit  173  displays the visitor on the panel  171  and the audio output unit  145  outputs the visitor&#39;s voice through the speaker  172 , the user can identify the visitor. When the user replies to the visitor&#39;s call through the microphone  231 , the microphone  231  converts the user&#39;s voice to an audio signal and transmits the audio signal to the interphone processor  232 . The interphone processor  232  processes and outputs the audio signal to the visitor through the interphone so that the visitor can hear the voice.  
      The main body  230  may further include a telephone circuit  241 . The telephone circuit  241  receives a ring signal and an audio signal received from a telephone line and outputs the signals to the audio selector  234 , and transmits the audio signal outputted from the microphone  231  through the telephone line.  
      When someone calls to the user, the user is notified that someone calls. When the user inputs a predetermined command through the input unit  142 , the controller  141  receives the command and drives the telephone circuit  241 . The telephone circuit  241  transmits an audio signal transmitted from a telephone line to the audio selector, and the controller  141  generates a control signal to output the audio signal to the audio output unit  145 . The audio output unit  145  enables the user to hear a counterpart&#39;s voice through the speaker  172 . The telephone circuit  241  transmits the audio signal inputted from the microphone  231  through the telephone line so that the counterpart can hear the user&#39;s voice.  
      The main body  230  may further include a home automation interface  251  which is connected to a computer controlling home automation and transmits/receives operation commands for operating apparatuses provided in a home. Home automation can be used to control many items within a user&#39;s home, from light and climate control (remote controlled or motion controlled), control of doors and window shutters, security and surveillance systems, control of multi-media home entertainment systems, automatic plant watering and pet feeding, and automatic scenes for dinners and parties, etc.  
      The in-wall type multi-functional television set according to the present invention has the following advantages.  
      Since the main body and the display device are joined to each other with the hinge assembly, it is possible to withdraw the display device from a wall and to accommodate the display device in the wall. In addition, a user can withdraw and view the in-wall type multi-functional television set at a desired position.  
      In addition, since the hinge assembly is equipped with the driving unit to automatically withdraw and accommodate the display device in the wall, it is convenient for the user to use the in-wall type multi-functional television set. In addition, since the first and second rotating units are folded and accommodated, it is possible to minimize a space required for installing the in-wall type multi-functional television set in the wall.  
      In addition, even though the fixed case is not horizontally provided in the wall, it is possible to adjust the display device to be horizontally provided by means of the horizontal adjusting part.  
      In addition, since the waterproof packing is provided between the main body and the hinge assembly, and between the display device and the hinge assembly, it is possible to prevent penetration of water in a humid area.  
      Further, since the main body is equipped with the interphone processor, telephone circuit, home automation interface, and the like, the user can perform various functions in addition to viewing the television.  
      While the present invention has been described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the present invention as defined by the following claims.