You are an expert at summarizing long articles. Proceed to summarize the following text:

You are an expert at summarizing long articles. Proceed to summarize the following text: 
FIELD OF THE INVENTION  
       [0001]    The present invention relates to a toilet seat; more particularly, relates to easily assembling the toilet seat and hiding water tubes and electrical wires to obtain beauty. 
       DESCRIPTION OF THE RELATED ARTS  
       [0002]    A general toilet seat comprises a seat, a cover, a main body and a water tank connecting to the main body. On assembling, the main body is fixed on a ground of a bathroom or a toilet with cement; the main body is connected with a draining tube; and the water tank is connected with a water-supplying system. After a user finishes using the toilet seat, a control valve on the water tank is pressed to flush the main body with water from the water tank so that egestion is drained into a septic tank through the draining tube. 
         [0003]    Although the main body of the toilet seat is flushed to drain egestion, the assembly of the toilet seat is not convenient owing to fixing the main body on the ground with cement. And the replacement of the toilet seat becomes even difficult with an additional process of removing the cement. Furthermore, when the weather is cold, the seat is cold too. Therefore, when the toilet seat is used late at night or in the early morning, the seat brings discomfort owing to the cold touch. 
         [0004]    Thence, a warm toilet seat is invented, comprising a main body; a water tank connected with the main body; a seat having a heating and washing unit; and a cover. On assembling, the toilet seat is fixed on the ground of a bathroom or a toilet with cement; the main body is connected with a draining tube; and the water tank is connected with a water-supplying system. On using the toilet seat, the seat can be heated to become warm. 
         [0005]    After finishing using the toilet seat, a spray unit sprays a warm water coordinated with a heater for washing a user. Then, a control valve on the water tank is pressed to flush the main body with water from the water tank so that egestion is drained into a septic tank through the draining tube. 
         [0006]    Although the warm toilet seat overcomes the discomfort of the general toilet seat, the assembly of the toilet seat is still inconvenient owing to fixing the main body on the ground with cement, and the replacement of the toilet seat remains so difficult with the additional process of removing the cement. Moreover, water tubes and electrical wires are exposed in the air downgrading the beauty of the toilet seat. The water tubes and the electrical wires may be eroded and corroded; and the electrical wires may be short-circuited or even an electric leakage may happen. Hence, the prior arts do not fulfill users&#39;requests on actual use. 
       SUMMARY OF THE INVENTION  
       [0007]    The main purpose of the present invention is to easily assemble the toilet seat and to hide water tubes and electrical wires to obtain beauty. 
         [0008]    To achieve the above purpose, the present invention is a toilet seat with tubes and wires hidden, comprises a carrying unit having a fixing member and a first and a second holes at proper positions on a surface of the carrying u nit; a water-retaining unit connecting to a first and a second water-supplying tubes, both tubes separately penetrating through the first and the second hole; a toilet seat connecting to the first water-supplying tube and having a connecting member correspondingly connecting to the fixing member; a control unit being deposed on an end surface of the toilet seat and connecting to the second water-supplying tube; a seat having a transmittal unit electrically connected with the control unit with the seat being movably fixed at an end of the control unit; and a cover being movably set on a surface of the control unit at an end and having a sensor electrically connected with the control unit. Accordingly, a novel toilet seat with tubes and wires hidden is obtained. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS  
         [0009]    The present invention will be better understood from the following detailed description of the preferred embodiment according to the present invention, taken in conjunction with the accompanying drawings, in which 
           [0010]      FIG. 1  is the perspective view showing the preferred embodiment according to the present invention; 
           [0011]      FIG. 2  is the explosive view showing the preferred embodiment; 
           [0012]      FIG. 3  is the view showing the first status of assembly; 
           [0013]      FIG. 4  is the view showing the second status of assembly; and 
           [0014]      FIG. 5  is the view showing the status of use. 
       
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT  
       [0015]    The following description of the preferred embodiment is provided to understand the features and the structures of the present invention. 
         [0016]    Please refer to  FIG. 1  and  FIG. 2 , which are a perspective view and an explosive view showing a preferred embodiment according to the present invention. As shown in the figures, the present invention is a toilet seat with tubes and wires hidden, comprising a carrying unit  1 , a water-retaining unit  8 , a toilet seat  2 , a control unit  3 , a seat  4  and a cover, where the present invention is easily assembled and water tubes and electrical wires are hidden to obtain beauty. 
         [0017]    The carrying unit  1  has a fixing member  11  at a proper position on a surface of the carrying unit  1  has a first hole  12  and a second hole  13  near the fixing member  11 ; and is a decorative wall. 
         [0018]    The water-retaining unit  8  has a first water-supplying tube  81  and a second water-supplying tube  82  respectively penetrating through the first hole  11  and the second hole  13 . The water-retaining unit  8  has a crutch  83 ; a water tank  84  is deposed on the crutch  83 ; and the water tank  84  is connected with the first water-supplying tube  81  and the second water-supplying tube  82   
         [0019]    The toilet seat  2  has a connecting member  21  correspondingly connected with the fixing member  11  at an end of the toilet seat  2 ; and the toilet seat  2  is connected with the first water-supplying tube  81 . 
         [0020]    The control u nit  3  is deposed on an end surface of the toilet seat  2 . The control unit  3  comprises a control panel  31 ; a heater  32  electrically connected with the control panel  31 ; a cleaning spray nozzle  33  electrically connected with the control panel  31  with the cleaning spray nozzle  33  deposed at bottom of the control unit  3  a sensor  34  electrically connected with the control panel  31  with the sensor  34  deposed on an end surface of the control unit  3 ; a moving unit  35  electrically connected with the control panel  31 ; and a power unit  36  electrically connected with the control panel  31 , where the cleaning spray nozzle  33  is connected with the second water-supplying tube  82  and the power unit  36  is penetrated through the first hole  12  or the second hole  13 . 
         [0021]    The seat  4  is movably fixed at an end of the control unit  3 ; and the seat  4  has a transmittal unit  41  electrically connected with the heater  32 . 
         [0022]    The cover  5  is covered on the seat  4 ; the cover  5  is movably fixed on a surface of the control unit  3  at an end of the cover  5  and is connected with the moving unit  35 ; and the cover  5  has a sensor  51  electrically connected with the control unit  3 . Thus, a novel toilet seat with tubes and wires hidden is obtained. 
         [0023]    Please refer to  FIG. 3  to  FIG. 5 , which are views showing a first state and a second state of assembly and a state of use. As shown in the figures, when assembling the present invention, a carrying unit  1  is deposed on a wall  6  of a bathroom or a toilet. A draining tube  22  of the toilet seat  2  is penetrated through a second hole  13  and is connected with a septic tank  7 . A power unit  36  of a control unit  3  is plugged in an outside power socket  61 . The carrying unit  1  is movably fixed on the wall  6  (not shownin the figures) for easily moving and maintaining. A connecting member  21  at an end of the toilet seat  2  is correspondingly connected with a fixing member  11  on the carrying unit  1 . When the toilet seat  2  is assembled with the carrying unit  1 , a bottom surface of the toilet seat is suspended above the ground. A first water-supplying tube  81  supplies water under control of a sensor  34 . A control valve  85  is deposed on the carrying unit  1  and is connected with the first water-supplying tube  81  of a water-retaining unit  81 . And a cleaning spray nozzle  33  of the control unit  3  is connected with the second water-supplying tube  82 . Thus, water tubes and electrical wires required for connecting the toilet seat  2  and the control unit  3  to the septic tank  7 , the water-retaining unit  8  and the power socket  61  are hidden at back of the carrying unit  1  so that the present invention is easily assembled and obtains beauty. 
         [0024]    When a user wants to use the toilet seat  2  and walks near, a sensor  51  on a cover  5  senses the user in a default distance in advance. Then the sensor  51  automatically turns on a moving unit  35  to open the cover  5 . A heater  32  is set up through a control panel  31  at the time so that a temperature of a transmittal unit  41  in the seat  4  is controlled through the water supplied from the second water-supplying tube  82  to provide a comfort when sitting on the seat  4 . When the user finishes using the toilet, a cleaning spray nozzle  33  is turned on through the control panel  31  to spray a water of a certain temperature for washing the user. 
         [0025]    Moreover, an automatic flushing or a manual flushing is set through the control panel  31 . If an automatic flushing is set the sensor  34  controls the first water-supplying tube  81  to flush egestion into a septic tank  7  through the draining tube  22  with water from an inlet tube  23  of the toilet seat  2  when the user leaves the seat  4 . If a manual flushing is set, a control valve  85  is pushed to flush egestion into a septic tank  7  through the draining tube  22  with water from an inlet tube  23  of the toilet seat  2 . Thus, a cleaning is done on finishing using the toilet. 
         [0026]    To sum up, the present invention is a toilet seat with tubes and wires hidden, where the toilet seat is easily assembled and water tubes and electrical wires are hidden to obtain beauty. 
         [0027]    The preferred embodiment herein disclosed is not intended to unnecessarily limit the scope of the invention. Therefore, simple modifications or variations belonging to the equivalent of the scope of the claims and the instructions disclosed herein for a patent are all within the scope of the present invention.

Summary:
A toilet seat is easily assembled. Water tubes and electrical wires for the toilet seat are hidden by a wall. Hence, the toilet seat is more beautiful.