JPS61239317A - Small-sized electronic computer - Google Patents

Abstract

PURPOSE:To make the EL display of a small-sized electronic computer exchangeable and, at the same time, to perform the EL display exchange without turning off the power supply to the computer. CONSTITUTION:A stopper 414 which determines the maximum stationary position by means of a compression spring is formed at the central part of an adjusting arm 410 for determining the inclined angle of a display panel 10 and the stopper 414 is contacted with the front board of the main body 1 of an electronic computer and stops the rotation of the display panel 10. When the display panel 10 is manually pulled out from the stopped position, the stopper 414 moves beyond the front board and the display panel 10 can be rotated to a maximum angle of about 90 deg.. When the display panel 10 is rotated in such a way, an inserting port 100 is exposed and the EL panel of this computer can be exchanged. At the side of the main body 1 opposite to the arm 410, the operating lever of a microswitch fitted to the main body 1 is pressure- contacted with the side face and, when the display panel 10 is rotated beyond the stopping point by means of the stopper 414, the microswitch 430 is opened and only the power supply to the driving circuit of the EL panel is cut off.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a small electronic computer having a display device consisting of a liquid crystal display for displaying data, using an EL (electroluminescence) display as a bank light of the display device, and further comprising: (This invention relates to a small electronic computer having a structure in which the EL display is replaceable and the power to only the EL display is cut off when the EL display is replaced.

<Prior Art> Conventionally, some small electronic computers equipped with a liquid crystal display have used a single light source such as a lamp as a backlight for the liquid crystal display. In order to solve the above problems, the present invention provides an EL display that covers the entire display surface of a liquid crystal display. It is an object of the present invention to make the EL display replaceable in consideration of the lifespan of the EL display, and to do so without having to turn off the power of the computer when replacing the EL display.

<Example> The present invention will be explained in detail below based on the drawings.

FIG. 1 is an external view of a small electronic computer according to the present invention.

The computer main body 1 has a protrusion 3 extending from the bottom of the front surface.
A display panel 10 is provided on the front surface and is rotatable forward using the upper side as a fulcrum. The display panel 10 is a liquid crystal display having a display segment of 640.times.200 dots, and displays alpha 22-meric characters and graphic patterns. On the back of this liquid crystal display, there is an E
An L display (electroluminescence display) is arranged so as to be replaceable via a replacement port 100. An operation panel 11 is provided on the side of the display panel 10 and is provided with various display lamps of the computer.

An operation button 12 for rotating the display panel 10 to an appropriate angle is provided below the operation panel 11. By pressing this operation button 12 a predetermined amount, a rotation mechanism described below is activated. The display panel 10 is rotated about the upper side as a fulcrum so that the lower side is pushed forward.

Furthermore, a handle 13 is provided on the top surface of the main body 1 in order to carry the computer. , and is supported so that it can be tilted sideways.

Therefore, by sliding the handle, you can change the center of gravity when carrying it, and when you install and use the calculator, you can lay it on its side and make the top surface flat.
It is configured so that a printer unit can be mounted thereon.

Reference numeral 5 denotes a printer unit, which in this figure is shown locked to the back of the main body 1 for portability. This locking mechanism will be described later.

Reference numeral 2 is a keyboard unit for inputting data and control data into the computer body 1, which has an alphanumeric key and a function key 20, and is connected to the computer body 1 via a detachable signal cable 4.

A storage box 30 is formed in the center of the protrusion 3 to store the signal cable removed from the main body 1 and the keyboard unit 2. As shown in FIG. A cover plate 31 closed by a spring (not shown) is attached, and the signal cable 4 is housed by pushing the cover plate 31 down.

The signal cable 4 is stored in the storage box 30 when the computer is to be carried around.

Further, near both ends of the protrusion 3, a keyboard unit 2 is provided so that the keyboard unit 2 can be propped up against the front surface of the display panel 10 when the computer is carried around.
Recesses 32, 32 are formed to engage with protrusions 22.degree. 22 (FIG. 2) formed on the sides of. Similarly, in order to lock the keyboard unit 2, there are
A guide protrusion 14.14 and a locking lever 15.15 are formed, and furthermore, at both ends of the surface of the keyboard unit 2,
A recess 24.24 that engages with the guide protrusion 14.14, and a long groove 25, 2 into which the locking lever 15.15 is inserted.
5 is formed.

Further, the locking lever 15 is locked or unlocked by a slide key 16 provided on the side surface of the main body l.

Next, the above-mentioned locking mechanism of the keyboard unit will be explained in detail with reference to FIG.

FIG. 2 shows a state in which the keyboard unit 2 is locked to the front surface of the main body 1.

The locking lever 15 is rotatably supported by a pin 200 and urged downward by a spring 201.

Further, the locking lever 15 is attached with a slide key 16 exposed on the side surface of the main body 1.

Therefore, by sliding the slide key 16 in the direction of the arrow, the locking lever 15 is rotated in the direction of the arrow to lock or unlock the keyboard unit.

When locking the keyboard unit 2, slide the slide key 16 upward and engage the protrusion 22 of the keyboard unit 2 in the recess 32 so that the key surface of the keyboard unit 2 faces the display panel 10. Make them stand up.

Furthermore, the protrusion 14 and the recess 24 are engaged, and the locking lever 1
5 is inserted into the long groove 25. In this state, slide key 1
6 is released, the locking lever 15 is urged downward by the spring 201 and is locked. Moreover, when releasing the lock, the operations can be performed in the reverse order. Further, at this time, the signal cable 4 is removed from the main body 1 and the keyboard unit 2, and is pushed into the storage box 30, which is covered with the side surface of the keyboard unit 2.

With this configuration, the display panel 10 is protected, and since the key surface of the keyboard unit is on the inside, the keyboard is also protected, making it easy to carry.

In addition to the keyboard unit, the present invention can also lock a printer unit to the main body 1 in order to make it easier to carry, and will be described in detail below with reference to FIGS. 6 and 7.

The printer 5 is, for example, a thermal printer, and has a printing section 5.
At both ends of the flat surface having a diameter of 0, a guide projection 52,52 and an aperture 53 through which a locking lever 700 shown in FIG. 7 is exposed.
．． 53, and openings 55, 55 are formed below to expose the fixing plates 51, 51. Also, there are holes 5 on both sides.
3. Knob 54 that locks or releases the lock near 53
．． 54 is installed.

The locking lever 700 is supported between a bin 703 provided on the printer body and a long hole 701 formed in the locking lever 700, and the locking lever 700 is rotatable and slidable with respect to the pin 703. has been completed. Also, the locking lever 70
0 is urged downward by a spring 710.

Furthermore, the rear end of the locking lever 700 engages with a pin 702 formed on the knob 54.

Therefore, by rotating the knob 54 counterclockwise in FIG. 7, the printer unit is pulled into the main body 5. This state is the state in which the printer unit is used. When the knob 54 is rotated clockwise, the locking lever 700 is rotated clockwise about the pin 703 as a fulcrum and protrudes from the opening 53. The fixing plate 51 is biased in the direction of the arrow by a spring 720 and is configured to be pulled out through the opening 55.

On the back side of the computer main body 1, when the printer unit is erected, an opening 170.1 is formed in alignment with the opening 53.53.
71 is formed.

When locking the printer unit 5 to the back of the computer main body 1, stand the printing part of the printer unit upright so that it faces the back of the main body, and then pull out the fixing plate 51.
It engages with the openings 171, 171 of the main body 1.

Subsequently, after bringing the flat surface of the printer unit 5 into close contact with the back surface, the knob 54 is rotated clockwise, and the locking lever 700 is penetrated into the openings 53 and 170. Furthermore,
Rotate the knob 54 counterclockwise to lock the printer unit 5.

This configuration makes it even easier to carry.

Next, the rotating mechanism of the display panel 1o will be explained in detail according to FIG.

FIG. 4 is a drawing seen from inside the display panel 10,
The upper side of the display panel 10 (the back side of the display panel 10 is exposed in this figure) is rotatably attached to the main body l, and can rotate up to about 90 degrees with respect to the front of the main body 1. It becomes. Further, a compression spring (not shown) is interposed between the main body 1 and the display panel 10, and is biased in a direction in which the lower side of the display panel is pushed out. An adjustment arm 410 that determines the tilt angle of the display panel 10 is attached to the back of the display panel.

This adjustment arm 410 has a fan-like shape, and has an L-shaped top. Rack teeth are formed below this L-shaped part, and the damper gear 412 is attached to the main body 1.
is engaged with. This damper gear 412 reduces the rotational speed of the display panel rotated by the compression spring.

Furthermore, triangular teeth are formed on the bottom of the arm 410 for stopping the arm 410 in units of a predetermined angle of inclination (four steps in this example), and are engaged with a four-claw 415 fixed to the shaft 416.

In addition, a stopper 414 is formed in the center of the arm 410 to determine the maximum resting position by a compression spring.
The rotation stops when it comes into contact with the front plate of the When the display panel 10 is manually pulled out from this stop position, the stopper 414 can be rotated up to about 90 degrees beyond the front plate.

This rotation exposes the insertion port 10o in FIG.
The EL panel can be replaced.

An operating lever of a microswitch 430 attached to the main body 1 is in pressure contact with the opposite side of the arm 410, and when the lever is rotated beyond the rest point set by the stopper 414, the switch is opened. There is. By opening this switch, only the power supply to the drive circuit of the EL panel is cut off. Therefore, power is not supplied to the EL panel, and the EL panel can be replaced while power is being supplied to the computer.

The shaft 416 is rotatably supported by the main body 1 and connected to a rack 417 that connects a rod 418 connected to the first action button 12.

The rod 418 is urged upward by a spring 420.

When the operating button 12 is pressed down, the rod 418 overcomes the biasing force of the spring 420 and is pushed down, causing the shaft 416 to rotate counterclockwise.

Due to the rotation of this shaft 416, the stopper claw 415
Since the engagement with one of the triangular teeth is released, the display panel 10 is rotated by the biasing force of the compression spring. When you immediately stop pressing the operation button, the stopper claw 415
is engaged with the next triangular tooth, and the inclination can be changed by one step. Also, if you keep pressing the operation button, the display panel will continue to rotate until the stopper 414 comes into contact with the front panel.The display panel can be adjusted to any angle with this simple rotation mechanism.Next, the fifth The mounting mechanism of the handle 13 will be explained in detail according to the figures.

A pair of U-shaped angles 510, 51.0 are buried in the long grooves 130 (FIG. 1) on the top surface of the computer main body 1, and these angles 510, 510 are connected to the U-shaped long holes 512, 51.0.
512 is formed.

A bottle 511 attached to the tip of the U-shaped handle 13 passes through the elongated hole 512, so that it can be rolled over in the state shown in this figure. Furthermore, the pin 511 is located at the end point 5 of the elongated hole 511.
It is possible to slide between 13 and 514, and it is stopped at a pixel point.

The end point 513 coincides with the center of gravity when the keyboard unit 2 is locked to the main body 1, and the end point 514 further coincides with the center of gravity when the printer unit 5 is locked to the main body 1.

With this configuration, the computer can be carried in a stable state, and by laying the handle 13 sideways, the top surface of the main body 1 becomes 7 degrees, making it possible to stack keyboard units or printer units.

<Effects> As described above, the small electronic computer of the present invention houses a display device consisting of a liquid crystal display for displaying data, an EL display as a backlight of the display device,
and a display panel body rotatably attached to the main body on one side, a replacement port for replacing the EL display provided on the other side of the display panel body, and a rotation of the display panel body is detected. Since the EL display has a detecting means and the power supply to the EL display is stopped in response to a detection signal from the detecting means, the following effects can be obtained.

(a) The entire display surface of the liquid crystal display is uniformly illuminated, resulting in good visibility.

(b) The EL display is replaceable and can be replaced before the end of its life, and the backlight can be changed to any color by replacing it.

(c) Also, when replacing the EL display, the power supply to only the EL display is stopped, and the power to the main unit that is in use is not turned off, so unprocessed data, etc. in the computer 1 will be lost due to volatilization. It is safe and has no problems.

[Brief explanation of drawings]

Fig. 1 is an external view of a small computer according to the present invention, Fig. 2 is a view showing the mechanism for attaching the keyboard unit to the main body of the computer, Fig. 3 is a view showing the storage box for the signal cable, and Fig. 4 is a view showing the mechanism for attaching the keyboard unit to the main body of the computer. 5 is a diagram showing the rotation mechanism of the display panel, FIG. 5 is a diagram showing the rotation mechanism of the handle, and FIG. 6 is an external view of the printer.
FIGS. 7(a) and 7(b) are diagrams explaining the mechanism for attaching the printer to the computer body and its operation. 1... Computer main body, 10... Display panel, 100.
...Exchange port, 414...Stopper, 430...Micro switch. Agent Patent attorney Aihiko Fuku (and 2 others) 1st drawing 2nd t1
(0) Figure 7

Claims (1)

[Claims] 1. A display device consisting of a liquid crystal display for displaying data and an EL (electroluminescence) display as a backlight for the display device is housed, and one side is rotatably attached to the main body. a display panel body, a replacement port for replacing the EL display provided on the other side of the display panel body, and a detection means for detecting rotation of the display panel body, the detection means A small electronic computer, characterized in that power supply to the EL display is stopped in response to a detection signal.