Abstract:
Electronic equipment includes a keyboard portion arranged on an electronic equipment body, for inputting data, a solar cell, arranged on the electronic equipment body, for supplying power, a cover for protecting the solar cell, and a display portion arranged on the cover.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to an electronic equipment with a cover wherein the cover is attached to the electronic equipment, and when the cover is closed, a display and a solar cell face each other. 
     2. Related Background Art 
     An electronic calculator is known as an example of a conventional electronic equipment with a cover. A cover attached to an electronic calculator of this type merely covers an operation panel of an equipment body 1 when the equipment is not operated, as indicated by a broken line 5 in FIG. 3A. FIG. 3A is a side view of the electronic calculator. A keyboard portion 2, a display portion 3 such as a liquid crystal display, and a power source portion 4 such as a solar cell are arranged on the upper surface side of the drawing. 
     Generally, the keyboard portion 2 requires a predetermined stroke upon depression of the keys, and the equipment requires a large thickness D so as to incorporate electronic parts such as an LSI (large-Scale Integrated circuit). On the other hand, the display portion 3 such as the liquid crystal display and the power source portion 4 such as the solar cell can be thinner compared with the keyboard portion 2. Therefore, a thickness d of these portions can be substantially half or less the thickness D (i.e., D≧2d). 
     However, the operation of the equipment is performed on the upper surface side of FIG. 3A. Therefore, if the keyboard portion 2, the display portion 3, and the power source portion 4 are arranged on the upper surface of the equipment body 1, an idle space 1a is formed below the power source portion 4, and a length L of equipment body 1 is increased, resulting in large equipment. More specifically, the arrangement shown in FIG. 3A can provide good operability but has a poor space factor, resulting in large equipment. FIG. 3B is a side view of electronic equipment free from the above problem. The power source portion 4 is arranged below (rear surface side) of the display portion 3 to eliminate the idle space 1a shown in FIG. 3A, and a length l (&lt;L) is decreased to render the equipment compact. If the power source portion 4 comprises a thin chemical cell, the arrangement of FIG. 3B poses no problem. However, if the power source portion 4 employs a solar cell, since light is radiated downward from the upper side of the drawing, the solar cell cannot be used if it is arranged below the display portion 3. More specifically, the arrangement shown in FIG. 3B can have a high space factor and can render the equipment compact. However, this arrangement cannot allow use of the solar cell, thus preventing an energy-saving design. 
     SUMMARY OF THE INVENTION 
     It is an object of the present invention to provide an electronic equipment with a cover free from the conventional problems, wherein electronic parts are attached not only to an equipment body side but to a cover side to render the equipment compact, and an energy-saving design using a solar cell is allowed. 
     It is another object of the present invention to provide an electronic equipment wherein when a cover pivotally arranged near an end portion of an equipment body is closed, a display portion and a power source portion (solar cell) face each other, and when the cover is opened, the display portion and the power source portion are exposed to be rendered operative, so that the equipment body can be rendered compact in the closed state of the cover. 
     It is still another object of the present invention to provide an electronic equipment comprising: 
     input means, arranged on an electronic equipment body, for inputting data; 
     a solar cell, arranged on the electronic equipment body, for supplying power; 
     a cover for protecting the solar cell; and 
     display means arranged on the cover. 
     It is still another object of the present invention to provide an electronic equipment having: 
     input means, arranged on an electronic equipment body, for inputting data; 
     display means, arranged on the electronic equipment body, for displaying the data; 
     a cover for protecting the display means; and 
     a solar cell, arranged on the cover, for supplying power to the electronic equipment. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIGS. 1A and 1B and FIGS. 2A and 2B show an embodiment of the present invention, in which FIGS. 1A and 1B are respectively a front view and a side view showing a state wherein a cover is closed and FIGS. 2A and 2B are respectively a front view and a side view showing a state wherein the cover is open; 
     FIG. 3A is a side view showing a first prior art of an arrangement wherein a power source portion is arranged on the operation panel side; and 
     FIG. 3B is a side view showing a second prior art of an arrangement wherein a power source portion is arranged below a display portion. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
     FIGS. 1A and 1B and FIGS. 2A and 2B show an embodiment of the present invention. FIGS. 1A and 1B are respectively a front view and a side view showing a closed state of a cover. FIGS. 2A and 2B are respectively a front view and a side view showing an open state of the cover. 
     The arrangement shown in FIGS. 1A and 1B, and FIGS. 2A and 2B includes a calculator body 1 having a bottom surface 1a, a keyboard portion 2, a display portion 3 such as a liquid crystal display, and a power source portion 4 such as a solar cell. The power source portion 4 is connected to the body 1 through a flexible wire (not shown). A cover 6 having a cover inner surface 6b is pivotally mounted on the body 1 through a hinge 6a. When the cover 6 is opened, a stand portion 6c projects l downward. 
     When the cover 6 is closed as shown in FIGS. 1A and 1B, the display portion arranged on the operation panel side of the body 1 faces the power source portion arranged on the inner surface of the cover 6. For this reason, the display portion and the power source portion can be prevented from damage. As described above, since the display portion and the power source portion have the small thickness, the top and bottom surfaces of the body 1 can be flat in the closed state of the cover, as shown in FIG. 1B. 
     When the cover 6 is pivoted in a direction indicated by arrow A about the hinge 6a, the open state shown in FIGS. 2A and 2B is obtained. In the open state of the cover 6 shown in FIGS. 2A and 2B, the display portion 3 and the power source portion 4 are exposed to the operation panel side, and can be rendered operative. 
     The positions of the display portion 3 and the power source portion 4 are not limited to those shown in the drawings but can be replaced with each other. More specifically, the display portion can be arranged on the cover side, and the power source portion can be arranged on the electronic equipment body side. 
     Note that as shown in FIG. 2B, if the stand portion 6c is arranged to project to the right in the drawing from the bottom surface 1a of the body 1, the body 1 can be inclined when it is used on the desk. Thus, an operator can easily see the display portion 3. 
     According to the present invention as described above, when the cover is closed, the display portion and the power source portion are housed inside the cover to be prevented from damage. When the cover is opened, the display portion and the power source portion are exposed to the operation panel side, so that an energy-saving design using a solar cell as the power source can be allowed. In addition, the equipment can be rendered compact.