Abstract:
In an electronic equipment, cushion members  11  are provided in a casing  10 . Cleaning members  12  are provided in a subcasing  31  that is capable of performing relative movement with respect to the casing  10 . In a process of movement of the subcasing  31 , the cleaning members  12  abut against surfaces of the cushion members  11  and remove foreign materials adhered thereon.

Description:
BACKGROUND OF THE INVENTION 
   1. Field of the Invention 
   The present invention generally relates to electronic equipment installed on mobile bodies, such as a vehicle and an airplane, and typified by a display, and more particularly to electronic equipment comprising a stationary unit and a movable unit. 
   2. Description of the Related Art 
   In recent years, compact and lightweight displays have been mounted on mobile bodies, such as a vehicle and an airplane. This enables drivers and passengers to be supplied with image information even in mobile bodies. 
   Especially, regarding small on-vehicle displays, there have been developed a display of the type that can be accommodated in a dashboard, in addition to a display of the type fixed on the top surface of a dashboard of a vehicle. 
   Applicant of the present application filed Japanese Patent Application No. 3-355768 disclosing an invention, which relates to a vehicle-mounted display that can be accommodated in a dashboard. Hereinafter, the related art of the invention is described in detail. 
     FIGS. 4 and 5  show a vehicle-mounted display just as described in the specification and drawings attached to the request in Japanese Patent Application No. 3-355768.  FIG. 4  illustrates a state in which the vehicle-mounted display is attached to a dashboard D. Further,  FIG. 5  is a side view illustrating the main unit of the vehicle-mounted display, which is taken from the right side thereof. The top subfigure to the bottom subfigure thereof illustrate a process in which the main display unit  20  of the display protrudes from a casing  10 . 
   This vehicle-mounted display comprises the casing  10 , which serves as a stationary unit, and also comprises the main display unit  20  and a subcasing  31 , which serve as a movable unit, and various kinds of drive mechanisms. 
   The casing  10  is a box-like enclosure, which is opened on one surface thereof, and fixed to the dashboard D of a vehicle by screws. Further, the display is constructed so that the main display unit  20  projects from the casing  10  through the opening thereof by causing the main display unit  20  and the subcasing  31  to advance toward and retreat from the casing  10 . 
   Usually, almost the entire casing  10  is accommodated and fixed in the dashboard D. Thus, when the entire main display unit  20  is accommodated in the casing  10 , the entire main display unit  20  is consequently accommodated in the dashboard D. In such a state, the main display unit  20  is accommodated in the casing  10  so that a principal plane of a screen  21  thereof is nearly parallel to the top and bottom surfaces of the casing  10 . 
   Meanwhile, when the display is utilized, first, the main display unit  20  and the subcasing  31 , which serve as the movable unit, start performing horizontal displacement in a direction, in which the main display unit  20  is projected from the casing  10 , (that is, in the left direction, as viewed in this figure) as one piece. Moreover, when this movable unit reaches a predetermined place in the casing  10 , the main display unit  20  is turned with respect to the subcasing  31 . Thus, the main display unit  20  starts performing a stand-up operation. Finally, as shown in the bottom figure of  FIG. 5 , the main display unit  20  takes such a position that the principal plane of the screen  21  is nearly perpendicular to the top and bottom surfaces of the casing  10 . Consequently, a driver can visually check an image displayed on the screen  21 . 
   Incidentally, a drive mechanism for causing the movable unit to perform horizontal displacement so as to advance toward and retreat from the casing  10  and another drive mechanism for causing the main display unit  20  to turn with respect to the subcasing  31  are provided in the subcasing  31 . The details of these mechanisms are described in the specification attached to the request in Japanese Patent Application No. 3-355768. 
   In the case of such a vehicle-mounted display, even during a vehicle runs, the main display unit  20  performs displacement with respect to the casing  10 . Thus, there is a fear that abnormal noises are generated owing to phenomena that the running vibrations of a vehicle are transmitted to the vehicle-mounted display, and that thus, the casing  10  and the main display unit  20  of the display hit against each other. 
   Incidentally, this problem of the generation of abnormal noises can easily be solved by interposing a cushion member between the casing  10  and the main display unit  20  and by then causing the main display unit  20  to slide on this cushion member. 
   However, when a frame body of the main display unit  20  is thus caused to slide directly on the cushion member, the surface portions of the frame body and the cushion member are cut away by the friction between the frame body and the cushion member. Thus, particulate foreign materials adhere to the cushion member. Further, when the frame body slides again on the cushion member to which such foreign materials adhere, there are fears that the frame body is damaged, and that the adhesion of such foreign materials to the frame body results in a dirty appearance thereof. 
   SUMMARY OF THE INVENTION 
   The invention has been made to eliminate the above problems with the related art, and therefore an object of the invention is to provide an electronic equipment having cleaning members each for cleaning foreign materials adhering to a cushion member, thereby preventing from being partly damaged by the foreign materials. 
   To achieve the above object, according to the invention, there is provided an electronic equipment comprises including cushion members, and cleaning members each for cleaning foreign materials adhering to the cushion member. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
       FIG. 1  is a perspective view illustrating the normal state of an on-vehicle display according to a preferred embodiment of the invention; 
       FIG. 2  is a perspective view illustrating the case that the on-vehicle display, which is the preferred embodiment of the invention, is turned over; 
       FIG. 3  is a side view illustrating a horizontal displacement process of the on-vehicle display that is the preferred embodiment of the invention; 
       FIG. 4  is a view illustrating a state in which a conventional on-vehicle display is mounted in a vehicle; and 
       FIG. 5  is a side view illustrating an operation process of the conventional on-vehicle display. 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
   Now, a description will be given in more detail of preferred embodiments of the invention with reference to the accompanying drawing. 
     FIGS. 1 to 3  illustrate an example of application of the invention to an on-vehicle display, which has been described in the foregoing description of the related art, as a preferred embodiment of electronic equipment according to the invention. 
     FIG. 1  is a perspective view illustrating the normal state of the on-vehicle display. A casing  10  serving as a stationary unit is represented by solid lines. A movable unit consisting of a main display unit  20  of the display and a subcasing is represented by dashed lines. 
     FIG. 2  is a perspective view illustrating a state in which this on-vehicle display is turned over. In this figure, the casing  10  serving as the stationary unit is represented by dashed lines, and the movable unit consisting of the main display unit  20  of the display and the subcasing is represented by solid lines. 
   Further,  FIG. 3  is a left side view showing the on-vehicle display that is in a normal state. The top subfigure to the bottom subfigure of  FIG. 3  illustrate, especially a process in which the main display unit  20  of the display moves in a direction that the main display unit  20  protrudes from the casing  10 , among processes in which the movable unit performs relative displacement with respect to the stationary unit. Incidentally, when the main display unit  20  of the display is accommodated in the casing  10 , the movable unit performs the displacement process from the step shown in the bottom subfigure to the step shown in the top subfigure of  FIG. 3 . 
   Additionally, the description of the basic configuration of this embodiment including various kinds of drive systems is omitted herein because the configuration of the on-vehicle display described in the specification and drawings attached to the request in Japanese Patent Application No. 3-355768 is applied thereto. 
   As illustrated in  FIG. 1 , cushion members  11  are provided on both sides of the top surface of a front projection portion of the casing  10 , respectively. Incidentally, the front projection portion may be formed in such a way as to be integral with the casing  10 . Alternatively, the casing  10  may be constructed by forming the box-like portion thereof from a metal chassis, and by resin-molding the front projection portion thereof, and by then integrally fixing these portions. The movable unit is adapted to pass above the top surface of this front projection portion. Consequently, each of the cushion members  11  is interposed between the movable unit and the stationary unit. A member obtained by coating PORON material (“PORON” is a trademark for elastomeric materials manufactured by Rogers Corporation), which provides a shock-absorbing action, with NITOFLON material (“NITOFLON” is a trademark for fluororesin materials manufactured by Nitto Denko Corporation) is utilized as each of the cushion members. NITOFLON material is used for maintaining the good slipperiness of the cushion members when the frame body of the main display unit  20  of the display slides on the cushion members  11 . Incidentally, this frame body is formed from a super heat-resistant ABS. 
   Cleaning members  12  are respectively provided on both sides of the bottom surface of the front portion of the subcasing  31 , that is, the connecting portion between the casing  31  and the main display unit  20  of the display. These cleaning members  12  are respectively provided at the places at which the cleaning members  12  can face the cushion members  11  when the movable unit passes above the cushion member  11 . Further, reliable cleaning action can be provided by setting the surface area of the cleaning members  12  as being sufficiently larger than that of the cushion members  11 . A nonwoven fabric made of HIMELON material (“HIMELON” is a tradename for a nonwoven material developed and put on sale by Ambic Co., Ltd. (formerly, Japan Felt Industrial Co., Ltd.)) is utilized as a material of the cleaning member. 
   A cleaning action of the on-vehicle display having the cushion members  11  and the cleaning members  12  in this way is described hereinbelow with reference to  FIG. 3 . 
   As shown in the top subfigure of  FIG. 3 , the cushion members  11  respectively abut against the side portions of the frame body of the main display unit  20  that is in an accommodated state. For example, even when the running vibrations of a vehicle are caused in this state, the casing  10  and the main display unit  20  of the display do not hit against each other. Thus, the generation of abnormal noises is prevented. 
   Next, in the case that this display is put into a utilized state, first, the movable unit starts horizontal displacement, as shown in the middle subfigure of  FIG. 3 . At that time, the side portions of the frame body of the main display unit  20 , which is a part of the movable unit, continuously slides on the cushion member  11 . Further, when the horizontal displacement of the movable unit is finished as shown in the bottom subfigure of  FIG. 3 , each of the cleaning members  12  provided on the subcasing  31 , which is a part of the movable unit, reaches a place at which this cleaning members  12  faces a corresponding one of the cushion members  11 . Incidentally, even during this horizontal displacement, the side portions of the frame body of the main display unit  20  of the display are in sliding contact with the cushion members  11 , respectively. Thus, even when the running vibrations are generated, the casing  10  and the main display unit  20  of the display do not hit against each other. Consequently, the generation of abnormal noises can be prevented. Furthermore, as described above, the cushion members  11  are coated with NITOFLON materials. Thus, the good slipperiness of the cushion members is maintained when the frame body slides on the cushion members  11 . 
   Further, even when the surface portion of the frame body formed from a super heat-resistant ABS is slightly cut away by the contact with the cushion members  11 , and the cushion member  11  is shaved, so that shaved particles thereof adhere to the surfaces of the cushion members  11 , foreign materials adhering onto the cushion members  11  can be wiped away therefrom by the cleaning members  12 , as illustrated in the bottom subfigure of  FIG. 3 . Thus, when the movable unit moves in such away as to be accommodated in the casing  10 , and when the movable unit moves in such a manner as to protrude from the casing  10  again, the foreign materials are removed from the surfaces of the cushion members  11 . Consequently, the frame body of the main display unit  20  of the display can reliably be prevented from being damaged by the foreign materials. 
   Although the cleaning members  12  are provided in the subcasing  31  in the aforementioned embodiment, the position of each of the cleaning members  12  is not limited thereto. Each of the cleaning members  12  may be disposed, for example, at a part of a side portion of the frame body of the main display unit  20  of the display. 
   That is, the invention can be implemented by providing the cleaning members  12  at places, at which the cleaning members  12  can respectively face the cushion members  11 , on a part of the member adapted to pass above the cushion members  11  in the process in which the movable unit moves toward the stationary unit. 
   Further, although the on-vehicle display, to which the invention is applied, has been described in the foregoing description of the aforementioned embodiment as an example of the electronic equipment to which the invention is applied, such electronic equipment is not limited thereto. The invention may be applied to an operating electronic device for operating the equipment body of electronic equipment by remote control. At that time, the electronic equipment is constructed by employing an operating portion, such as a keyboard, as a movable unit corresponding to a casing serving as a stationary unit. 
   Furthermore, in the foregoing description of the aforementioned embodiment, the material obtained by cutting a part of the frame body of the main display unit  20  of the display away therefrom has been described as an example of a foreign material. However, foreign materials adhering to the cushion members  11  are not limited thereto. Dust and dirt may be such foreign materials. The invention may be applied to the case that such foreign materials are removed from the display. 
   As described above, the electronic equipment of the invention is provided with the cleaning member for cleaning foreign materials that adhere to the cushion member. Thus, the electronic equipment is prevented from being partly damaged. Moreover, foreign materials are prevented from adhering to a part of the electronic equipment like dirt.