Abstract:
The present invention discloses a mobile device including a motor module, a heat dissipation module, a vibration module and an electric brush module. The motor module has a rotating shaft driven by the motor module and two ends of which stick out from the motor module. The heat dissipation module includes a fan unit fixed on one end of the rotating shaft. The vibration module includes a vibration cam and an electromagnetic coil disposed on the vibration cam. The vibration cam is loosely fitted and disposed on the other end of the rotating shaft. The electric brush module is disposed inside the mobile device corresponding to the electromagnetic coil. When electrified, the electric brush module excites the electromagnetic coil generating a magnetic force to adhere and rotate with the rotating shaft synchronously. Herewith the effects of effective heat dissipation and saving interior space of the mobile device are achieved.

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
       [0001]    This application claims the benefit of Taiwan Patent Application No. 101132254, filed on Sep. 5, 2012, in the Taiwan Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference. 
       BACKGROUND OF THE INVENTION 
       [0002]    1. Field of the Invention 
         [0003]    The present invention relates to a mobile device, and more particularly to the mobile device having a heat dissipation module and a vibration module and capable of sharing a motor module. 
         [0004]    2. Description of Related Art 
         [0005]    As science and technology advance, mobile devices such as mobile phones have become the necessary communication and recreational tools for our life. However, after a long time of use, the mobile phone accumulates heat inside and may damage internal components of the mobile phone, so that heat dissipation is an important issue. 
         [0006]    At present, most of the mobile phones dissipate heat by conducting the heat to a casing of the mobile phone. However, the heat dissipation by conducting the heat to the casing of the mobile phone may heat up the casing of the phone after a long time of use of the phone. In other words, such heat dissipation method may cause discomfort or even burns to users. 
         [0007]    On the other hand, if a heat dissipation module is disposed inside the mobile phone, an additional motor will be required for driving the heat dissipation system, and thus increasing the installation space required for internal components significantly. In addition, present mobile phones tend to be developed with a thin and thin design, and it is difficult to install an additional motor in the limited space of the mobile phone for driving the heat dissipation system. The additionally disposed heat dissipation system will increase the volume of the mobile phone, and thus failing to comply with the user requirements. Therefore, the way for mobile devices to dissipate heat is limited significantly, and this is one of the major problems that demand a feasible solution. 
         [0008]    In summation of the description above, the inventor of the present invention based on years of experience in the related industry to conduct researches and experiments, and finally designed a mobile device to overcome the aforementioned problems of the prior art and enhance the industrial application. 
       SUMMARY OF THE INVENTION 
       [0009]    Therefore, it is a primary objective of the invention to overcome the aforementioned problems of the prior art by providing a mobile device in hope of solving the poor heat dissipation problem of the conventional mobile device. 
         [0010]    To achieve the foregoing objective, the present invention provides a mobile device, comprising a motor module, a heat dissipation module, a vibration module and an electric brush module. The motor module comprises a rotating shaft, and both ends of the rotating shaft are exposed from both ends of the motor module respectively, and the motor module is provided for driving a rotating shaft to rotate. The heat dissipation module comprises a fan unit mounted at an end of the rotating shaft. The vibration module comprises an electromagnetic coil and a vibration cam, wherein the electromagnetic coil is loosely fitted and disposed on a lateral side of the vibration cam, and the vibration cam is disposed at the other end of the rotating shaft. The electric brush module is disposed inside the mobile device and at a position corresponding to the electromagnetic coil, such that when the electric brush module is electrically conducted, the electric brush module excites the electromagnetic coil to produce a magnetic force in order to attach onto the rotating shaft, and synchronously drive the rotating shaft to rotate. 
         [0011]    Preferably, the mobile device further comprises a driving detection module for generating a driving signal to drive the motor module when the driving detection module detects an electric conduction of the electric brush module or the temperature inside the mobile device being greater than a predetermined value. 
         [0012]    Preferably, the mobile device further comprises a power detection module for generating a power signal when the power detection module detects that the electric power of the mobile device is smaller than a predetermined value, and when the driving detection module receives the power signal, the driving detection module generates the driving signal only if the electric brush module is detected to be electrically conducted. 
         [0013]    Preferably, the heat dissipation module further comprises a fan casing disposed in the mobile device and at a position corresponding to the fan unit for covering the fan unit, and the fan casing includes at least one opening formed on a lateral side of the fan casing. 
         [0014]    Preferably, the mobile device further comprises a sound-absorbing layer disposed on an internal surface or an external surface of the fan casing and made of a material selected from the collection of glass wool, rock wool or a combination thereof. 
         [0015]    In summation of the description above, the mobile device of the present invention has one or more of the following advantages: 
         [0016]    (1) In the mobile device of the present invention, the heat dissipation module and the vibration module share the same motor module to save installation space and cost effectively. 
         [0017]    (2) The mobile device of the present invention can overcome the problem of having a poor heat dissipation effect of the conventional mobile device that may cause discomfort or even burn the users. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0018]      FIG. 1  is a block diagram of a mobile device in accordance with a preferred embodiment of the present invention; 
           [0019]      FIG. 2  is a schematic view of a mobile device in accordance with a preferred embodiment of the present invention; 
           [0020]      FIG. 3  is an exploded view of a mobile device in accordance with a preferred embodiment of the present invention; and 
           [0021]      FIG. 4  is a block diagram of a mobile device in accordance with another preferred embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0022]    The technical contents and characteristics of the present invention will be apparent with the detailed description of a preferred embodiment accompanied with related drawings as follows. Wherein, a mobile phone is used as an example of the mobile device to illustrate the present invention, but the invention is not limited to the scope of mobile phones only. 
         [0023]    With reference to  FIGS. 1 ,  2  and  3  for a block diagram, a schematic view, and an exploded view of a mobile phone in accordance with a preferred embodiment of the present invention respectively, the mobile phone  1  as shown in  FIG. 1  comprises a motor module  11 , a heat dissipation module  12 , a vibration module  13 , an electric brush module  14 , a driving detection module  15  and a power detection module  16 . Wherein, the motor module  11  is disposed in the mobile device  1  and includes a rotating shaft  111 , and both ends of the rotating shaft  111  are exposed from both ends of the motor module  11  respectively, and the motor module  11  drives the rotating shaft  111  to rotate. The heat dissipation module  12  is disposed in the mobile device  1  and includes a fan unit  121  mounted at an end of the rotating shaft  111 . The vibration module  13  is disposed in the mobile device  1  and includes an electromagnetic coil  131  and a vibration cam  132 . The electromagnetic coil  131  is disposed on a lateral side of the vibration cam  132 , and with respect to the fan unit  121 , the vibration cam  132  is loosely fitted and disposed at the other end of the rotating shaft  111 . The electric brush module  14  is disposed in the mobile device  1  and at a position corresponding to the electromagnetic coil  131 . When the electric brush module  14  is electrically conducted, the electric brush module  14  excites the electromagnetic coil  131  to produce a magnetic force for attaching the electromagnetic coil  131  to the rotating shaft  111 . When the rotating shaft  111  rotates, the vibration cam  132  can synchronously rotate with the rotating shaft  111 . 
         [0024]    The mobile device  1  further comprises a driving detection module  15  and a power detection module  16 . The driving detection module  15  produce a driving signal  151  to drive the motor module  11  when the electric brush module  14  is electrically conducted or the temperature of the mobile device  1  is greater than a predetermined value. When the power detection module  16  detects that the electric power of the mobile device  1  is smaller than a predetermined value, the mobile device  1  generates a power signal  161 . When the driving detection module  15  receives the power signal  161 , the driving detection module  15  will not generate the driving signal  151  even the temperature is greater than the predetermined value. The driving signal  151  will be generated only if an electric conduction of the electric brush module  14  is detected. 
         [0025]    It is noteworthy that the heat dissipation module  12  further comprises a fan casing  122  disposed in the mobile device  1  and at a position corresponding to the fan unit  121  for covering the fan unit  121 , and the fan casing  122  includes at least one opening formed on a lateral side of the fan casing  122 . Since the sound produced during the rotation of the fan unit  121  may bother users, a sound-absorbing layer can be disposed on an internal surface or an external surface of the fan casing  122 , wherein the sound-absorbing layer is made of glass wool, rock wool or a combination thereof. Therefore, when the fan unit  121  is rotated, the sound generated from the rotation of the fan unit  121  can be absorbed by the sound-absorbing layer to prevent the noise annoying the users. 
         [0026]      FIGS. 2 and 3  have not shown the driving detection module  15  and the power detection module  16 . In  FIGS. 2 and 3 , the heat dissipation module  12  and the vibration module  13  have a driving force coming from the rotation of the rotating shaft  111  of the motor module  11 . In other words, the heat dissipation module  12  and the vibration module  13  can share the same motor module  11  for the driving effect through the rotating shaft  111  without requiring two motors to drive the heat dissipation module  12  and the vibration module  13  respectively, so as to save the installation space significantly. 
         [0027]    In  FIG. 1 , when the driving detection module  15  detects that the temperature inside the mobile device  1  is greater than a predetermined value, a driving signal  151  is generated to drive the motor module  11 . Now, the rotating shaft  111  of the motor module  11  is rotated to drive the fan unit  121  of the heat dissipation module  12  to rotate, so as to achieve the heat dissipation effect. Now, the vibration cam  132  of the vibration module  13  is loosely fitted and disposed at the other end of the rotating shaft  111 , so the rotation of the rotating shaft  111  will not drive the vibration cam  132  to rotate. 
         [0028]    When the mobile device  1  has an incoming call, the electric brush module  14  is electrically conducted to excite the electromagnetic coil  131  of the vibration module  13 , such that the electromagnetic coil  131  produces a magnetic force to attach to the rotating shaft  111 . In the meantime, the driving detection module  15  detects the electric conduction of the electric brush module  14  and generates the driving signal  151  to drive the motor module  11 . Now, the rotating shaft  111  of the motor module  11  is rotated to drive the vibration cam  132  to rotate, so as to achieve the incoming call vibration effect. In addition, the rotation of the rotating shaft  111  also drives the fan unit  121  of the heat dissipation module  12  to rotate, so as to achieve the heat dissipation effect. 
         [0029]    In other words, when the mobile device  1  has no incoming call, and the temperature inside the mobile device  1  is greater than a predetermined value, the driving detection module  15  can drive the rotating shaft  111  to rotate based on the driving signal  151  to drive the fan unit  121  of the heat dissipation module  12  to rotate, so as to achieve the heat dissipation effect. Now, the electric brush module  14  is not electrically conducted, the rotation of the rotating shaft  111  will not drive the vibration cam  132  to rotate and cause an incoming call vibration. When the mobile device  1  has an incoming call, the electric brush module  14  is electrically conducted, so that the electromagnetic coil  131  is excited to attach the vibration cam  132  to the rotating shaft  111 , and the rotation of the rotating shaft  111  can drive the vibration cam  132  and the fan unit  121  simultaneously to achieve the incoming call vibration effect as well as the heat dissipation effect. 
         [0030]    In other words, when the temperature inside the mobile device  1  is too high, the fan unit  121  will be rotated to dissipate the heat, and the vibration cam  132  will not be driven to rotate and cause a misjudgment of the incoming call vibration during the heat dissipation process. When the mobile device  1  has an incoming call, the vibration cam  132  is rotated to achieve the incoming call vibration effect, while the fan unit  121  is also being rotated to achieve the heat dissipation effect. 
         [0031]    On the other hand, the power detection module  16  can detect the level of electric power of the mobile device  1 . If the electric power of the mobile device  1  is smaller than a predetermined value, a power signal  161  will be generated. When the driving detection module  15  receives the power signal  161 , even if the detected temperature of the mobile device  1  is greater than the predetermined value, the driving signal  151  will not be generated. The driving signal  151  will be generated, only if the electric conduction of the electric brush module  14  is detected. 
         [0032]    Further, when the electric power of the mobile device  1  is smaller than predetermined value, even if the temperature of the mobile device  1  is greater than the predetermined value, the driving detection module  15  will not drive the rotating shaft  111  of the motor module  11  to rotate so as to drive the heat dissipation module  12  and the vibration module  13 . When the mobile device  1  has an incoming call, the driving detection module  15  generates the driving signal  151  to drive the rotating shaft  111  of the motor module  11  to rotate, while the electric brush module  14  is electrically conducted to drive the heat dissipation module  12  and the vibration module  13 , so as to achieve the heat dissipation effect in the incoming call vibration process. 
         [0033]    In other words, when the electric power of the mobile device  1  is insufficient, the mobile device  1  adopts the conventional heat dissipation method, that is, conducting the heat energy to the casing of the mobile device  1  for the heat dissipation, so as to prevent driving the heat dissipation module  12  from consuming too much electric power. However, when the mobile device  1  has an incoming call, the incoming call vibration function will be provided to remind the users. Now, the motor module  11  is driven to drive the vibration module  13 , and the heat dissipation module  12  is also driven during the incoming call vibration process, thus further improving the heat dissipation effect without consuming additional electric power. 
         [0034]    In summation, when the electric power of the mobile device  1  is sufficient, and the temperature inside the mobile device  1  is too high, the rotating shaft  111  of the motor module  11  is rotated to drive the fan unit  121  of the heat dissipation module  12 , and the rotation of the rotating shaft  111  will not drive the vibration cam  132  of the vibration module  13 , so that when the heat generated by the mobile device  1  is dissipated, the mobile device  1  will not be vibrated to disturb the user. When the mobile device  1  has an incoming call, the electric brush module  14  will be electrically conducted to excite the electromagnetic coil  131  of the vibration module  13 , so that the vibration cam  132  can be attached onto the rotating shaft  111 . The rotation of the rotating shaft  111  drives the fan unit  121  and the vibration cam  132  to achieve the heat dissipation effect during the incoming call vibration process. When the electric power of the mobile device  1  is insufficient, both vibration cam  132  and fan unit  121  will be driven only if the mobile device  1  has an incoming call and requires the incoming call vibration function. When the mobile device  1  has no incoming call, the fan unit  121  will not be driven to save power even if the internal temperature is not too high. 
         [0035]    With reference to Table 1 for a table of driving conditions of a mobile device in accordance with a preferred embodiment of the present invention, the conditions such as whether or not the power signal  161  is generated, the electric brush module  14  is electrically conducted, and the temperature is too high can be divided into a first condition C1, a second condition C2, a third condition C3, a fourth condition C4, a fifth condition C5, a sixth condition C6, a seventh condition C7 and an eighth condition C8. Based on these eight conditions, the motor module  11  can be driven or not driven, and the vibration cam  132  and the fan unit  121  can be driven or not driven respectively. It is noteworthy to notice the second condition C2, the third condition C3 and the fourth condition C4. The condition whether or not the electric brush module  14  is electrically conducted to excite the electromagnetic coil  131  can be used to achieve the effect of using a single motor module  11  to drive the vibration cam  132  and the fan unit  121  simultaneously or to drive them at different time. The remaining first condition C1, fifth condition C5, sixth condition C6, seventh condition C7 and eighth condition C8 have been described above, and will not be repeated. 
         [0000]    
       
         
               
               
               
               
               
               
               
             
               
               
               
               
               
               
               
             
           
               
                   
                 TABLE 1 
               
               
                   
                   
               
               
                   
                 Power signal 
                 Brush module 14 
                   
                   
                   
                   
               
               
                   
                 161 
                 is electrically 
               
               
                   
                 (Insufficient 
                 conducted 
                 Temperature 
                 Motor 
                 Vibration 
                 Fan 
               
               
                   
                 power) 
                 (Incoming call) 
                 is too high 
                 module 11 
                 cam 132 
                 unit 121 
               
               
                   
                   
               
             
             
               
                   
               
             
          
           
               
                 First 
                 0 
                 0 
                 0 
                 0 
                 0 
                 0 
               
               
                 condition C1 
               
               
                 Second 
                 0 
                 0 
                 1 
                 1 
                 0 
                 1 
               
               
                 condition C2 
               
               
                 Third 
                 0 
                 1 
                 0 
                 1 
                 1 
                 1 
               
               
                 condition C3 
               
               
                 Fourth 
                 0 
                 1 
                 1 
                 1 
                 1 
                 1 
               
               
                 condition C4 
               
               
                 Fifth 
                 1 
                 0 
                 0 
                 0 
                 0 
                 0 
               
               
                 condition C5 
               
               
                 Sixth 
                 1 
                 0 
                 1 
                 0 
                 0 
                 0 
               
               
                 condition C6 
               
               
                 Seventh 
                 1 
                 1 
                 0 
                 1 
                 1 
                 1 
               
               
                 condition C7 
               
               
                 Eighth 
                 1 
                 1 
                 1 
                 1 
                 1 
                 1 
               
               
                 condition C8 
               
               
                   
               
             
          
         
       
     
         [0036]    With reference to  FIG. 4  for a block diagram of a mobile phone in accordance with another preferred embodiment of the present invention, the present invention further provides another mobile device  2 , comprising a driving module  21 , a first function module  22 , a second function module  23 , a control module  24 , a driving detection module  25  and a power detection module  26 . The driving module  21  is disposed in the mobile device  1  and has a shaft  211 , both ends of the shaft  211  are exposed from both ends of the driving module  21  respectively, and the driving module  21  drives the shaft  211  to rotate. The first function module  22  is disposed in the mobile device  2  and includes a heat dissipation unit  221  mounted to an end of the shaft  211 . The second function module  23  is disposed in the mobile device  2  and includes an excitation unit  231  and a vibration unit  232 . The excitation unit  231  is disposed on a lateral side of the vibration unit  232 , and the vibration unit  232  is loosely fit and disposed at the other side of the shaft  211 . The control module  24  is disposed in the mobile device  2  and at a position corresponding to the excitation unit  231 . When the control module  24  is electrically conducted, the control module  24  excites the excitation unit  231  to produce a magnetic force to attach onto the shaft  211  and synchronously rotate with the shaft  211 . 
         [0037]    The control module  24  is adjusted to be electrically conducted or not, so as to excite the excitation unit  231  to attach onto the shaft  211 , which can control whether or not both of the first function module  22  and the second function module  23  are driven synchronously, when the shaft  211  rotates. 
         [0038]    The mobile device  2  further comprises a driving detection module  25  and a power detection module  26 . The driving detection module  125  detects that the control module  24  is electrically conducted or the temperature inside the mobile device  2  is greater than a predetermined value, then a driving signal  251  will be generated to drive the driving module  21 . The power detection module  26  detects that the electric power of the mobile device  2  is smaller than a predetermined value, and then the power signal  261  is generated. When the driving detection module  25  receives the power signal  261 , the driving signal  252  is generated only if the control module  24  is detected to be electrically conducted, so as to save electric power. 
         [0039]    It is noteworthy that the first function module  22  can further include a casing  122  disposed in the mobile device  2  and at a position corresponding to the heat dissipation unit  221  for covering the heat dissipation unit  221 , and the casing  122  includes at least one opening formed on a lateral side of the casing  122 . In addition, a sound-absorbing unit can be disposed on an internal surface or an external surface of the casing  122 , wherein the sound-absorbing layer is made of glass wool, rock wool or a combination thereof. When the heat dissipation unit  221  is rotated, the sound produced by the heat dissipation unit  221  can be absorbed by the sound-absorbing layer to prevent noises from annoying the users. 
         [0040]    The implementation of the mobile device  2  of the present invention is substantially the same as that of the mobile device  1  of the present invention as described above, and thus will not be repeated.