Abstract:
Provided is a handheld terminal device in which an excellent seal can be obtained without causing twisting, air bubbles, or gaps in double-sided tape. The handheld terminal device ( 100 ) has a water-resistant construction for a camera unit ( 113 ), a speaker unit ( 114 ), a charging terminal unit ( 116 ), a keypad ( 117 ), an antenna unit ( 118 ), a main display ( 121 ), and a sub-display ( 122 ). Said water-resistant construction comprises convex ribs having edge-shaped protrusions that press on water-resistant double-sided tape. For example, the sub-display ( 122 ) is provided with: a display unit ( 151 ) having a display opening ( 151 a); a water-resistant wall ( 152 ) that is formed on the surface of the display unit ( 151 ) and has a convex rib ( 153 ); and water-resistant double-sided tape ( 154 ) that attaches the upper face of the water-resistant wall ( 152 ) having a convex rib ( 153 ) to the inner face of a sub-display exterior case ( 155 ).

Description:
TECHNICAL FIELD 
       [0001]    The present invention relates to a mobile terminal apparatus, such as a mobile telephone, and electronic equipment including these apparatuses. More particularly, the present invention relates to improvement of a waterproof structure of each member of a mobile terminal apparatus. 
       BACKGROUND ART 
       [0002]    With a housing of electronic equipment, such as a mobile telephone, it is preferable to be a waterproof structure that prevents, for example, rainwater from entering inside. A housing of electronic equipment is formed with, for example, a plastic front case and rear case, and is designed to waterproof by compressing the both cases in the direction of fitting in a state where a waterproof packing such as a rubber O-ring intervenes between the fitting surfaces of both cases. In addition, there is the method of preventing, for example, dust and moisture from entering inside by strongly pressing cases and predetermined members with a sealing material, such as rubber packing. 
         [0003]    Patent literature 1 discloses the method of sealing equipment by making members adhere closely by using a tacky double-sided tape. 
         [0004]    Patent literature 2 discloses a mobile terminal apparatus that has a waterproof structure around a key sheet to provide convex shaped limbs on a rubber key sheet, and also provide convex shaped limbs on an upper cover. 
       CITATION LIST 
     Patent Literature 
       [0005]    PTL 1 
         [0006]    Japanese Patent Application Laid-Open No.2003-209376 
         [0007]    PTL 2 
         [0008]    Japanese Patent Application Laid-Open No. 2000-151772 
       SUMMARY OF INVENTION 
     Technical Problem 
       [0009]    With a conventional waterproof structure using a double-sided tape as above, sealing performance depends entirely on how properly the double-sided tape is applied. When the attachment is not enough due to, for example, twist of a double-sided tape, the sealing performance is extremely deteriorated and may not be able to keep waterproof property. Also, when attached, a double-sided tape easily produces air bubble and space, and may not be able to keep waterproof property. Particularly, with a double-sided tape used in a very narrow space, twist and space tends to be generated. 
         [0010]    It is therefore an object of the present invention to provide a mobile terminal apparatus and electronic equipment that can acquire good airtightness without making, for example, twist, air bubble, or space in a double-sided tape. 
       Solution to Problem 
       [0011]    The mobile terminal apparatus and electronic equipment of the present invention include: the first member that has an opening section; the waterproof barrier that encircles the opening section of the first member; the second member that is pasted to the upper face of the waterproof barrier and seals space encircled by the waterproof barrier; and the waterproof double-sided tape that pastes the waterproof barrier and the second member, where the waterproof barrier has a convex shaped limb that projects to a waterproof double-sided tape side. 
       ADVANTAGEOUS EFFECTS OF INVENTION 
       [0012]    According to the present invention, it is possible to acquire good airtightness without making, for example, twist, air bubble, or space in a double-sided tape. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0013]      FIG. 1  is a perspective view of a mobile terminal apparatus according to an embodiment of the present invention; 
           [0014]      FIG. 2  is an exploded perspective view showing a configuration of a sub display of a mobile terminal apparatus according to the present embodiment; 
           [0015]      FIG. 3  is an exploded perspective view showing a configuration of a main display of a mobile terminal apparatus according to the present embodiment; 
           [0016]      FIG. 4  is an exploded perspective view showing a configuration of a key operation section of a mobile terminal apparatus according to the present embodiment; 
           [0017]      FIG. 5  is an exploded perspective view showing a configuration of a charging terminal section and a speaker section of the first housing of a mobile terminal apparatus according to the present embodiment; 
           [0018]      FIG. 6  is an A-A′ line cross sectional view seen from the direction of the arrow of  FIG. 5 ; 
           [0019]      FIG. 7  is a B-B′ line cross sectional view seen from the direction of the arrow of  FIG. 5 ; 
           [0020]      FIG. 8  is an exploded perspective view showing a configuration of a camera section and an antenna section of the first housing of a mobile terminal apparatus according to the present embodiment; 
           [0021]      FIG. 9  is an A-A′ line cross sectional view seen from the direction of the arrow of  FIG. 8 ; and 
           [0022]      FIG. 10  is a B-B′ line cross sectional view seen from the direction of the arrow of  FIG. 8 . 
       
    
    
     DESCRIPTION OF EMBODIMENTS 
       [0023]    Embodiment of the present invention will be explained in detail with reference to the accompanying drawings below. 
       Embodiment 
       [0024]      FIG. 1  is a perspective view of a mobile terminal apparatus according to an embodiment of the present invention;  FIG. 1(   a ) is a perspective view showing a closed state seen from a front face of the mobile terminal apparatus;  FIG. 1(   b ) is a perspective view showing a closed state seen from a back face of the mobile terminal apparatus; and  FIG. 1(   c ) is a perspective view showing an open state seen from a back face of the mobile terminal apparatus. In the present description, “upward” means a perspective in which the front face of a mobile terminal apparatus is placed upward. 
         [0025]    The present embodiment is an example applied to a flip mobile telephone/a personal handy-phone system (PHS) as a mobile terminal apparatus. In addition to a flip mobile telephone, it is possible to apply to mobile electronic equipment, for example, a personal digital assistants (PDA) and a portable game machine. 
         [0026]    As shown in  FIG. 1 , mobile terminal apparatus  100  is formed with first housing  110  having, for example, key operation section  117 , second housing  120  having an LCD display, and hinge section  130  connecting first housing  110  and second housing  120  to be able to open an close. 
         [0027]    First housing  110  and second housing  120  are formed with a resin molding that is insulant, such as, a non-conductive ABS resin. 
         [0028]    First housing  110  has rear case  111  that forms a back face of mobile terminal apparatus  100  and front case  112  that faces second housing  120  when folded. By fitting rear case  111  and front case  112 , first housing  110 , which is a flat cabinet, is formed. 
         [0029]    Rear case  111  has camera section  113  in the upper part, speaker section  114  in the middle right side, battery cover  115  that accommodates a battery at the lower part, and charging terminal section  116  at the bottom. Camera section  113  and battery cover  115  are formed with a resin material that has the same color and provides the same texture as rear case  111 . 
         [0030]    Second housing  120  has main display  121  and sub display  122  that is provided on the outer surface. Main display  121  and sub display  122  are formed with a LCD display or an organic electro-luminescence (EL) display. 
         [0031]    Features of the present embodiment includes a waterproof structure of each component inside of first housing  110  and second housing  120 . 
         [0032]      FIG. 2  is an exploded perspective view showing the structure of sub display  122  of above mobile terminal apparatus  100 ;  FIG. 3  is an exploded perspective view showing the structure of main display  121  of above mobile terminal apparatus  100 ; and  FIG. 4  is an exploded perspective view showing the structure of key operation section  117  of above mobile terminal apparatus  100 . 
         [0033]    [Waterproof structure of sub display  122 ] 
         [0034]    As shown in  FIG. 2 , sub display  122  has display unit  151  having display opening section  151   a,  waterproof barrier  152  having convex shaped limb  153  formed on the front face of display unit  151 , waterproof double-sided tape  154  adhering the inner face of sub display exterior case  155  and the upper face of waterproof barrier  152  that has convex shaped limb  153 , and sub display exterior case  155 . 
         [0035]    Via waterproof double-sided tape  154 , waterproof barrier  152  seals sub display exterior case  155  and the front face of display unit  151  where display opening section  1   51  a is open. Waterproof barrier  152  has a feature of having convex shaped limb  153  that projects to waterproof double-sided tape  154  side. Convex shaped limb  153  has a feature of encircling the surroundings including display opening section  151   a.  When convex shaped limb  153  is designed not to encircle, for example, display opening section  151   a  (that is, a discrete convex shaped projection), the sealing performance is diminished instead. 
         [0036]    As long as convex shaped limb  153  is a convex shape, any shape is possible. However, if the convex shape is acute-angled as an apex of a triangle, waterproof double-sided tape  154  may be damaged when pushed or used for years, so that a curved face such as a semi-circular shape is preferable, as shown in  FIG. 6  (described later). It is equally possible to be a triangle shape where the apexes are R-chamfered. 
         [0037]    Convex shaped limb  153  only needs to encircle the surroundings of display opening section  151   a,  and at least one convex shaped limbs  153  is enough. It is equally possible to provide a plurality of convex shaped limbs  153  annularly. 
         [0038]    Waterproof double-sided tape  154  is a double-stick, sheet-shaped sealing member. As shown in  FIG. 2 , waterproof double-sided tape  154  is punched out in advance to suit the shape of the front face to be sealed. 
         [0039]    Sub display exterior case  155  is formed with transparent resin having a sense of coherence with the outer surface of second housing  120 . 
         [0040]    Next, the method of assembling sub display  122  will be described. 
         [0041]    On the front face of display unit  151 , waterproof barrier  152  having convex shaped limb  153  is formed. 
         [0042]    On the upper face of waterproof barrier  152 , waterproof double-sided tape  154  and sub display exterior case  155  are layered in order. 
         [0043]    In this situation, sub display exterior case  155  is pressed from above. As a result of pressing force, the upper face of waterproof barrier  152  and the inner face of sub display exterior case  155  are stuck by waterproof double-sided tape  154 . 
         [0044]    The upper face of waterproof barrier  152  is stuck to the surface of waterproof double-sided tape  154  near entirely. In order to increase this adhesive force, convex shaped limb  153  presses waterproof double-sided tape  154  especially strong at the contacting point. Waterproof double-sided tape  154  receives a strong stress at the point where convex shaped limb  153  contacts, and strongly sticks to sub display exterior case  155  as slightly transforming. Sandwiched between convex shaped limb  153  and sub display exterior case  155 , waterproof double-sided tape  154  is pressed with a strong force. As a result, waterproof double-sided tape  154  contacts more tightly, so that, by also increasing the stickiness of waterproof double-sided tape  154 , it is possible to acquire good airtightness. 
         [0045]    With convex shaped limb  153 , since the shape of the convex part resolves negative factors, such as, twist, air bubble, and space of waterproof double-sided tape  154 , reliable airtightness of sub display  122  is possible. 
         [0046]    [Waterproof structure of main display  121 ] 
         [0047]    As shown in  FIG. 3 , main display  121  has main display unit  161  that has display opening section  161   a,  waterproof barrier  162  that has convex shaped limb  163  formed on the front face of main display unit  161 , waterproof double-sided tape  164  that sticks the inside of display panel  165  and the upper face of waterproof barrier  162  having convex shaped limb  163 , and display panel  165  that is formed with transparent resin. 
         [0048]    Via waterproof double-sided tape  164 , waterproof barrier  162  seals display panel  165  and the front face of main display unit  161  where display opening section  161   a  is open. Waterproof barrier  162  has convex shaped limb  163  that projects to waterproof double-sided tape  164  side. Convex shaped limb  163  encircles the surroundings including display opening section  161   a.    
         [0049]    Waterproof double-sided tape  164  is a double-stick, sheet-shaped seal component. As shown in  FIG. 3 , waterproof double-sided tape  164  is punched out to suit the shape of display opening section  161   a.    
         [0050]    Next, the method of assembling main display  121  will be described. 
         [0051]    On the front face of main display unit  161 , waterproof barrier  162  having convex shaped limb  163  is formed. 
         [0052]    On the upper face of waterproof barrier  162 , waterproof double-sided tape  164  and display panel  165  are layered in order. 
         [0053]    In this situation, display panel  165  is pressed from above. As a result of pressing force, the upper face of waterproof barrier  162  and the inner face of display panel  165  are stuck by waterproof double-sided tape  164 . 
         [0054]    The upper face of waterproof barrier  162  is stuck to the surface of waterproof double-sided tape  164  near entirely. Convex shaped limb  163  presses waterproof double-sided tape  164  especially strong at the contacting point. Waterproof double-sided tape  164  receives a strong stress at the point where convex shaped limb  163  contacts, and strongly sticks to display panel  165  as slightly transforming. Sandwiched between convex shaped limb  163  and display panel  165 , waterproof double-sided tape  164  is pressed with a strong force. As a result, waterproof double-sided tape  164  contacts more tightly, so that. by also increasing the stickiness of waterproof double-sided tape  164 , it is possible to acquire good airtightness in main display  121 . 
         [0055]    [Waterproof structure of key operation section  117 ] 
         [0056]    As shown in  FIG. 4 , key operation section  117  has key sheet support substrate  171  that supports key sheet  171   a  that performs switching operation by pressing force that work key top  175 , waterproof barrier  172  that has convex shaped limb  173  formed on the front face of key sheet support substrate  171 , waterproof double-sided tape  174  that sticks the inner face of key top  175  and the upper face of waterproof barrier  172  having convex shaped limb  173 , and key top  175  that has a keypad structure. 
         [0057]    Via waterproof double-sided tape  174 , waterproof barrier  172  seals key top  175  and the front face of key sheet support substrate  171  that supports key sheet  171   a.  Waterproof barrier  172  has convex shaped limb  173  that projects to waterproof double-sided tape  174  side. 
         [0058]    Convex shaped limb  173  encircles the surroundings including key sheet  171   a.  As long as convex shaped limb  173  is a convex shape, any shape is possible. 
         [0059]    Waterproof double-sided tape  174  is a double-stick, sheet-shaped seal component. As shown in  FIG. 4 , waterproof double-sided tape  174  is punched out in advance to suit the shape of key top  175  to be sealed. 
         [0060]    In key top  175 , keys are arranged in a matrix form. On the front face of key top  175 , for example, symbols, letters, and numbers are formed corresponding to these keys by paint, plating, punch mark, or ion plating. On the back face of key top  175 , an elastic material (not shown) that is a pushing element at the position corresponding to each key is strongly glued by a silicone adhesive. 
         [0061]    Next, the method of assembling key operation section  117  will be described. 
         [0062]    On the front face of key sheet support substrate  171 , waterproof barrier  172  having convex shaped limb  173  is formed. 
         [0063]    On the upper face of waterproof barrier  172 , waterproof double-sided tape  174  and key top  175  are layered in order. 
         [0064]    In this situation, key top  175  is pressed from above. As a result of pressing force, the upper face of waterproof barrier  172  and the bottom face of key top  175  are stuck by waterproof double-sided tape  174 . 
         [0065]    The upper face of waterproof barrier  172  is stuck to the surface of waterproof double-sided tape  174  near entirely. In order to increase this adhesive force, convex shaped limb  173  presses waterproof double-sided tape  174  especially strong at the contacting point. Waterproof double-sided tape  174  receives a strong stress at the point where convex shaped limb  173  contacts, and strongly sticks to key top  175  as slightly transforming. Sandwiched between convex shaped limb  173  and key top  175 , waterproof double-sided tape  174  is pressed with a strong force. As a result, waterproof double-sided tape  174  contacts more tightly, so that, by also increasing the stickiness of waterproof double-sided tape  174 , it is possible to acquire good airtightness. 
         [0066]    With convex shaped limb  173 , since the shape of the convex part resolves negative factors, such as, twist, air bubble, and space of waterproof double-sided tape  174 , reliable airtightness of key operation section  117  is possible. 
         [0067]      FIG. 5  is an exploded perspective view showing the structures of charging terminal section  116  and speaker section  114  of first housing  110  of the above mobile terminal apparatus  100 .  FIG. 5  further removes, for example, front case  112 , key sheet support substrate  171 , and hinge section  130  from first housing  110  of  FIG. 4 .  FIG. 6  is an A-A′ line cross sectional view seen from the direction of the arrow of  FIG. 5 , and  FIG. 7  is a B-B′ line cross sectional view seen from the direction of the arrow of  FIG. 5 . 
         [0068]    [Waterproof structure of charging terminal section  116 ] 
         [0069]    As shown in  FIG. 5  and  FIG. 6 , charging terminal section  116  has charging terminal opening section  181  that is open in rear case  111  of first housing  110 , waterproof barrier  182  that has convex shaped limb  183  formed on the back face of rear case  111 , waterproof double-sided tape  184  that sticks electrode  185  and the upper face of waterproof barrier  182  having convex shaped limb  183 , electrode  185  that connects to an external charging terminal (not shown), connector housing  186  that accommodates electrode  185 . 
         [0070]    Via waterproof double-sided tape  184 , waterproof barrier  182  seals electrode  185  and the back face of rear case  111  where charging terminal opening section  181  is open. Waterproof barrier  182  has convex shaped limb  183  that projects to waterproof double-sided tape  184  side. As shown in  FIG. 5 , convex shaped limb  183  encircles the surroundings including charging terminal opening section  181 . 
         [0071]    As long as convex shaped limb  183  is a convex shape, any shape is possible. To prevent damage of waterproof double-sided tape  184  when pressed, a curved surface such as a semi-circular shape is preferable as shown in  FIG. 6 . 
         [0072]    Waterproof double-sided tape  184  is a double-stick, sheet-shaped seal component. As shown in  FIG. 5 , waterproof double-sided tape  184  is punched out in advance to suit the shape of the front face to be sealed. 
         [0073]    Next, the method of assembling charging terminal section  116  will be described. 
         [0074]    On the bottom part of the back face of rear case  111 , waterproof barrier  182  having convex shaped limb  183  is formed. 
         [0075]    On the upper face of waterproof barrier  182 , waterproof double-sided tape  184  and electrode  185  are layered in order. 
         [0076]    In this situation, electrode  185  is pressed from above. As a result of pressing force, the upper face of waterproof barrier  182  and the inner face of electrode  185  are stuck by waterproof double-sided tape  184 . 
         [0077]    The back face of rear case  111 , that is, the upper face of waterproof barrier  182  is stuck to the surface of waterproof double-sided tape  184  near entirely. In order to increase this adhesive force, convex shaped limb  183  presses waterproof double-sided tape  184  especially strong at the contacting point. Waterproof double-sided tape  184  receives a strong stress at the point where convex shaped limb  183  contacts, and strongly sticks to electrode  185  as slightly transforming. Sandwiched between convex shaped limb  183  and electrode  185 , waterproof double-sided tape  184  is pressed with a strong force. As a result, waterproof double-sided tape  184  contacts more tightly, so that, by also increasing the stickiness of waterproof double-sided tape  184 , it is possible to acquire good airtightness. 
         [0078]    With convex shaped limb  183 , since the shape of the convex part resolves negative factors, such as, twist, air bubble, and space of waterproof double-sided tape  184 , reliable airtightness of charging terminal section  116  is possible. 
         [0079]    [Waterproof structure of speaker section  114 ] 
         [0080]    As shown in  FIG. 5  and  FIG. 7 , speaker section  114  has speaker opening section  191  that is open in rear case  111  of first housing  110 , waterproof barrier  192  that has convex shaped limb  193  formed on the back face of rear case  111 , waterproof double-sided tape  194  that sticks speaker unit  195  and the upper face of waterproof barrier  192  having convex shaped limb  193 , speaker unit  195 , and spring  196  that is attached to speaker unit  195 . 
         [0081]    Via waterproof double-sided tape  194 , waterproof barrier  192  seals speaker unit  195  and the back face of rear case  111  where speaker opening section  191  is open. Waterproof barrier  192  has convex shaped limb  193  that projects to waterproof double-sided tape  194  side. 
         [0082]    As shown in  FIG. 5 , convex shaped limb  193  encircles the surroundings including speaker opening section  191 . 
         [0083]    As long as convex shaped limb  193  is a convex shape, any shape is possible. To prevent damage of waterproof double-sided tape  194  when pressed, a curved surface such as a semi-circular shape is preferable as shown in  FIG. 7 . 
         [0084]    Waterproof double-sided tape  194  is a double-stick, sheet-shaped seal component. As shown in  FIG. 5 , waterproof double-sided tape  194  is punched out in advance to suit the shape of the front face to be sealed. 
         [0085]    Next, the method of assembling speaker section  114  will be described. 
         [0086]    On the back face of rear case  111 , waterproof barrier  192  having convex shaped limb  193  is formed. 
         [0087]    On the upper face of waterproof barrier  192 , waterproof double-sided tape  194  and speaker unit  195  are layered in order. 
         [0088]    In this situation, speaker unit  195  is pressed from above. As a result of pressing force, the upper face of waterproof barrier  192  and the inner face of speaker unit  195  are stuck by waterproof double-sided tape  194 . 
         [0089]    The back face of rear case  111 , that is, the upper face of waterproof barrier  192  is stuck to the surface of waterproof double-sided tape  194  near entirely. In order to increase this adhesive force, convex shaped limb  193  presses waterproof double-sided tape  194  especially strong at the contacting point. Waterproof double-sided tape  194  receives a strong stress at the point where convex shaped limb  193  contacts, and strongly sticks to speaker unit  195  as slightly transforming. Sandwiched between convex shaped limb  193  and speaker unit  195 , waterproof double-sided tape  194  is pressed with a strong force. As a result, waterproof double-sided tape  194  contacts more tightly, so that, by also increasing the stickiness of waterproof double-sided tape  194 , it is possible to acquire good airtightness in speaker section  114 . 
         [0090]    With convex shaped limb  193 , since the shape of the convex part resolves negative factors, such as, twist, air bubble, and space of waterproof double-sided tape  194 , reliable airtightness is possible. 
         [0091]      FIG. 8  is an exploded perspective view showing the structures of camera section  113  and antenna section  118  of first housing  110  of above mobile terminal apparatus  100 .  FIG. 8  removes a camera section exterior case from rear case  111  of first housing  110  of  FIG. 1(   b ).  FIG. 9  is an A-A′ line cross sectional view seen from the direction of the arrow of  FIG. 8 , and  FIG. 10  is a B-B′ line cross sectional view seen from the direction of the arrow of  FIG. 8 . 
         [0092]    [Waterproof structure of camera section  113 ] 
         [0093]    As shown in  FIG. 8  and  FIG. 9 , camera section  113  has camera unit  201  that has camera opening section  201   a,  waterproof barrier  202  that has convex shaped limb  203  formed on the front face of camera unit  201 , waterproof double-sided tape  204  that sticks the outer peripheral surface of lens protective cap  205  and the upper face of waterproof barrier  202  having convex shaped limb  203 , lens protective cap  205 , and camera section exterior case  206 . 
         [0094]    Via waterproof double-sided tape  204 , waterproof barrier  202  seals the outer peripheral surface of lens protective cap  205  and the front face of camera unit  201  where camera opening section  201   a  is open. Waterproof barrier  202  has convex shaped limb  203  that projects to waterproof double-sided tape  204  side. Convex shaped limb  203  encircles the surroundings including camera opening section  201   a.    
         [0095]    As long as convex shaped limb  203  is a convex shape, any shape is possible. To prevent damage of waterproof double-sided tape  204  when pressed, a curved surface such as a semi-circular shape is preferable as shown in  FIG. 9 . Convex shaped limb  203  only needs to encircle the surroundings of display opening section  201   a,  and at least one convex shaped limbs  203  is enough. It is equally possible to provide a plurality of convex shaped limbs  203  annularly. 
         [0096]    Waterproof double-sided tape  204  is a double-stick, sheet-shaped seal component. As shown in  FIG. 8 , waterproof double-sided tape  204  is punched out in advance to suit the shape of the front face of camera unit  201  to be sealed. 
         [0097]    Camera section exterior case  206  is formed with transparent resin having a sense of coherence with the outer surface of rear case  111  of first housing  110 . 
         [0098]    Next, the method of assembling camera section  113  will be described. 
         [0099]    On the front face of camera unit  201 , waterproof barrier  202  having convex shaped limb  203  is formed. 
         [0100]    On the upper face of waterproof barrier  202 , waterproof double-sided tape  204 , lens protective cap  205 , and camera section exterior case  206  are layered in order. 
         [0101]    In this situation, camera section exterior case  206  is pressed from above. As a result of pressing force, the upper face of waterproof barrier  202  and the outer peripheral part of lens protective cap  205  are stuck by waterproof double-sided tape  204 . 
         [0102]    The upper face of waterproof barrier  202  is stuck to the surface of waterproof double-sided tape  204  near entirely. In order to increase this adhesive force, convex shaped limb  203  presses waterproof double-sided tape  204  especially strong at the contacting point. Waterproof double-sided tape  204  receives a strong stress at the point where convex shaped limb  203  contacts, and strongly sticks to camera section exterior case  206  as slightly transforming. Sandwiched between convex shaped limb  203  and the outer peripheral part of lens protective cap  205 , waterproof double-sided tape  204  is pressed with a strong force. As a result, waterproof double-sided tape  204  contacts more tightly, so that, by also increasing the stickiness of waterproof double-sided tape  204 , it is possible to acquire good airtightness. 
         [0103]    With convex shaped limb  203 , since the shape of the convex part resolves negative factors, such as, twist, air bubble, and space of waterproof double-sided tape  204 , reliable airtightness of camera section  113  is possible. 
         [0104]    [Waterproof structure of antenna section  118 ] 
         [0105]    Antenna section  118  has a waterproof structure on front and back faces. 
         [0106]    As shown in  FIG. 8  and  FIG. 10 , antenna section  118  has power feeding terminal opening section  211  that is open in support substrate  210 , waterproof barrier  212  that has convex shaped limb  213  formed on the front face of support substrate  210 , first waterproof double-sided tape  214  that sticks the back face of antenna plate  215  and the upper face of waterproof barrier  212  having convex shaped limb  213 , antenna plate  215  that has opening groove  215   a,  substrate  216  that mounts electronic components, waterproof barrier  217  ( FIG. 10 ) that has convex shaped limb  218  ( FIG. 10 ) formed on the back face of substrate  216 , second waterproof double-sided tape  219  that sticks the upper face of antenna plate  215  and the upper face of waterproof barrier  217  having convex shaped limb  218 . 
         [0107]    Power feeding terminal  220  shows in power feeding terminal opening section  211  of support substrate  210  and is electrically connected with antenna plate  215  after assembling. 
         [0108]    Via first waterproof double-sided tape  214 , waterproof barrier  212  seals the back face of antenna plate  215  and the upper face of support substrate  210  where power feeding terminal opening section  211  is open. In the same way, via second waterproof double-sided tape  219 , waterproof barrier  217  seals the back face of substrate  216  and the front face of antenna plate  215 . 
         [0109]    Waterproof barriers  212  and  217  both have convex shaped limbs  213  and  218  ( FIG. 10 ) that are projected to waterproof double-sided tapes  214  and  219  sides. As shown in  FIG. 8 , convex shaped limbs  213  and  218  ( FIG. 10 ) encircle the surroundings including power feeding terminal opening section  211  and opening groove  215   a  of antenna plate  215 . 
         [0110]    As shown in  FIG. 10 , convex shaped limbs  213  and  218  are arranged at the position where the front face and the back face of antenna plate  215  are not overlapped. 
         [0111]    As long as convex shaped limbs  213  and  218  ( FIG. 10 ) are convex shapes, any shape is possible. To prevent damage of waterproof double-sided tapes  214  and  219  when pressed, a curved surface such as a semi-circular shape is preferable as shown in  FIG. 10 . 
         [0112]    Waterproof double-sided tapes  214  and  219  are double-stick, sheet-shaped seal components. As shown in  FIG. 8 , waterproof double-sided tapes  214  and  219  are punched out in advance to suit the shapes of the front faces to be sealed. 
         [0113]    Next, the method of assembling antenna section  118  will be described. 
         [0114]    On the front face of support substrate  210 , waterproof barrier  212  having convex shaped limb  213  is formed. On the back face of substrate  216 , waterproof barrier  217  ( FIG. 10 ) having convex shaped limb  218  ( FIG. 10 ) is formed. 
         [0115]    On the upper face of waterproof barrier  212 , first waterproof double-sided tape  214 , antenna plate  215 , second waterproof double-sided tape  219 , and substrate  216  are layered in order. 
         [0116]    In this situation, substrate  216  is pressed from above. As a result of pressing force, the upper face of waterproof barrier  212  and the back face of antenna plate  215 , and the upper face of waterproof barrier  217  and the front face of antenna plate  215 , are stuck by waterproof double-sided tapes  214  and  219  respectively. 
         [0117]    Convex shaped limbs  213  and  218  ( FIG. 10 ) press waterproof double-sided tapes  214  and  219  especially strong at the contacting points. Waterproof double-sided tapes  214  and  219  receive a strong stress at the point where convex shaped limbs  213  and  218  ( FIG. 10 ) contact, and strongly stick to the front and back faces of antenna plate  215  as slightly transforming. Sandwiched between convex shaped limbs  213  and  218  ( FIG. 10 ) and antenna plate  215 , waterproof double-sided tapes  214  and  219  ( FIG. 10 ) are pressed with strong forces. As a result, waterproof double-sided tapes  214  and  219  contact more tightly, so that, by also increasing the stickiness of waterproof double-sided tapes  214  and  219 , it is possible to acquire good airtightness. 
         [0118]    With convex shaped limbs  213  and  218  ( FIG. 10 ), since the shape of the convex part resolves negative factors, such as, twist, air bubble, and space of waterproof double-sided tapes  214  and  219 , reliable airtightness is possible. 
         [0119]    In this way, in antenna section  118  that has waterproof structures on front and back faces, it is possible to acquire good airtightness. 
         [0120]    As described above, according to the present embodiment, mobile terminal apparatus  100  has convex shaped limbs that press waterproof double-sided tapes by an edge shaped protrusion, as the waterproof structure of camera section  113 , speaker section  114 , charging terminal section  116 , key operation section  117 , antenna section  118 , main display  121 , and sub display  122 . For example, sub display  122  has display unit  151  that has display opening section  151  a, waterproof barrier  152  that has convex shaped limb  153  formed on the front face of display unit  151 , and waterproof double-sided tape  154  that sticks the inner face of sub display exterior case  155  and the upper face of waterproof barrier  152  having convex shaped limb  153 . If sub display exterior case  155  is pressed from above upon assembling, the upper face of waterproof barrier  152  and the inner face of sub display exterior case  155  are stuck by waterproof double-sided tape  154 , and at the same time, convex shaped limb  153  presses waterproof double-sided tape  154  especially strong at the apex part. As a result, waterproof double-sided tape  154  contacts more tightly, so that, by also increasing the stickiness of waterproof double-sided tape  154 , it is possible to acquire good airtightness. The above functions are the same in camera section  113 , speaker section  114 , charging terminal section  116 , key operation section  117 , antenna section  118 , and main display  121 . In the present embodiment, it is possible to realize reliable waterproof property in each section. 
         [0121]    Convex shaped limb  153  can prevent twist produced in waterproof double-sided tape  154  by the level of the convex part (projecting part). For the similar reason, convex shaped limb  153  can properly release air bubble and space produced in waterproof double-sided tape  154 . By this means, reliable airtightness is possible. 
         [0122]    Also, since waterproof double-sided tape  154  is used, there is an effect enabling to acquire good airtightness, even if the strength of cases and members is low or space is narrow, compared to the method of strongly pressing cases and predetermined members with a sealing material, such as rubber packing. 
         [0123]    Therefore, it is possible to realize to make a mobile terminal apparatus smaller and thinner, acquiring sufficient waterproof structure. 
         [0124]    The above description is an example, and the range of the present invention is not limited to this. 
         [0125]    For example, although a convex shaped limb only needs to encircle the surroundings of an opening section and at least one convex shaped limb is enough, it is equally possible to provide a plurality of convex shaped limbs annularly. 
         [0126]    Although camera section  113 , speaker section  114 , charging terminal section  116 , key operation section  117 , antenna section  118 , main display  121 , and sub display  122  have been exemplified as the waterproof structure of mobile terminal apparatus  100 , it is possible to apply the same structure to other elements. Obviously, it is equally possible to apply to more than one of these elements. 
         [0127]    Although in the above embodiment a case has been explained where the present invention is applied to apply to a mobile terminal of a mobile telephone as a mobile terminal apparatus, the present invention is not limited to a mobile telephone, and is equally possible to apply to a mobile information terminal, for example, PDA, a personal computer or a merged apparatus, and further a mobile device, such as, an MP3 player, an HDD player, or a mobile game machine. 
         [0128]    Furthermore, although the term “mobile terminal apparatus” has been used for ease of explanation, a waterproof structure of electronic equipment and electronic equipment, such as mobile electronic equipment are equally possible. 
         [0129]    Further, anything may be employed for the shape, material, the number and the method of attaching parts that forms the above mobile terminal apparatus, including the connection structure of a housing and a convex shaped limb. Also, a waterproof double-sided tape may be referred to as “double-sided adhesive tape,” “double-sided adhesive sheet,” or simply as “double-sided tape.” 
         [0130]    The disclosure of Japanese Patent Application No. 2009-124598, filed on May 22, 2009, including the specification, drawings and abstract, is incorporated herein by reference in its entirety. 
       INDUSTRIAL APPLICABILITY 
       [0131]    A mobile terminal apparatus and electronic equipment according to the present invention is useful to use as a waterproof structure of a housing or an element of battery driven electronic equipment, such as, a mobile telephone. Also, a mobile terminal apparatus and electronic equipment according to the present invention are not limited to a housing or an element, and is equally possible to provide a waterproof structure of other housing or element to various electronic equipments. 
       REFERENCE SIGNS LIST 
       [0000]    
       
           100  Mobile terminal apparatus 
           110  First housing 
           111  Rear case 
           112  Front case 
           113  Camera section 
           114  Speaker section 
           115  Battery cover 
           116  Charging terminal section 
           117  Key operation section 
           118  Antenna section 
           120  Second housing 
           121  Main display 
           122  Sub display 
           130  Hinge section 
           151  Display unit 
           151   a  Display opening section 
           152 ,  162 ,  172 ,  182 ,  192 ,  202 ,  212 ,  217  Waterproof barrier 
           153 ,  163 ,  173 ,  183 ,  193 ,  203 ,  213 ,  218  Convex shaped limb 
           154 ,  164 ,  174 ,  184 ,  194 ,  204 ,  214 ,  219  Waterproof double-sided tape 
           155  Sub display exterior case 
           161  Main display unit 
           161   a  Display opening section 
           165  Display panel 
           171  Key sheet support substrate 
           171   a  Key sheet 
           175  Key top 
           181  Charging terminal opening section 
           185  Electrode 
           186  Connector housing 
           191  Speaker opening section 
           201  Camera unit 
           201   a  Camera opening section 
           205  Lens protective cap 
           206  Camera section exterior case 
           210  Support substrate 
           211  Power feeding terminal opening section 
           215  Antenna plate 
           215   a  Opening groove 
           216  Substrate