JPH0556655U - Display device - Google Patents

Abstract

(57) [Summary] [Purpose] While suppressing the deterioration of the display, it is possible to automatically return to the predetermined position even if the standing position fluctuates due to external force while the display is standing. When the stand-up instruction key 12 is pressed, the microcomputer 88 monitors the rotational position data of the lid 22 input from the rotational position detection means 86 and the driver 82.
When the rotation mechanism is driven by the motor 42 to raise the lid 22 provided with the LCD matrix display 26 to a predetermined position from the apparatus main body 10 and the inversion instruction key 14 is pressed, the third switch is operated. The drive control of the driver 82 is performed until the detection output is made from 78, and the rotation mechanism is driven by the motor 42 to invert the lid 22 on the apparatus main body 10. Further, after the standing up is completed, the microcomputer 88 monitors the rotational position data, and when the lid 22 is displaced from the predetermined standing position by an external force, the driver 82 is drive-controlled to return the lid 22 to the predetermined standing position. Let

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a display device, and more particularly to a display device suitable for use in a moving body such as an in-vehicle TV.

[0002]

[Prior Art]

 In recent years, as the development of the expressway network has progressed, the opportunities for family and friends to drive long distances have also increased, and improving the livability of automobiles has become a major theme. Most cars are equipped with a car stereo that combines an FM radio and a tape deck so that you can enjoy music inside the car. Higher power and higher quality sound are being made by using digital audio equipment such as CD players, CD changers, and DAT.

In addition, recently, in addition to music performance, images on TV and the like can be viewed so that there is a tendency to enhance entertainment. Video on TV etc. is useful for relieving frustration when traffic is congested, and has the advantage that emergency information can be quickly obtained through news programs and telops. Conventionally, in-vehicle TVs are often installed on the ceiling in the passenger compartment, and only the passengers in the rear seats can see them, but in many cases, the driver or passenger in the passenger seat wants to see them during a break. When the on-vehicle TV is to be viewed in the driver's seat or the passenger seat, the on-vehicle TV is placed on the front panel. At this time, it is difficult to install it on the front panel of an in-vehicle TV that uses a CRT as a display, but it is difficult to install it on an in-vehicle TV that uses an LCD matrix display because the space for the display is small. Is easy.

[0004]

[Problems to be solved by the device]

 However, if a vehicle-mounted TV is installed on the front panel, sunlight may directly hit the display of the vehicle-mounted TV, and a display that is weak to heat, such as an LCD matrix display, will deteriorate faster. There was a problem.

From the above, it is an object of the present invention to enable the display to be tilted to reduce the deterioration due to direct incidence of sunlight, and to maintain a predetermined position even if the position of the display changes due to external force while the display is standing. It is an object of the present invention to provide a display device that can be automatically returned to the display. Another object of the present invention is to provide a display device in which the standing position of the display device can be arbitrarily set.

[0006]

[Means for Solving the Problems]

 The above-mentioned problem is, in one aspect of the present invention, a base, a movable body that has an indicator inside, and is provided so as to be capable of being erected with respect to the base, and a erection for instructing the erecting and inversion of the movable body. An operating step, a rotating mechanism for performing a raising / lowering operation of the movable body, a motor for driving the rotating mechanism, a driver for driving the motor, a detection unit for detecting a rotating position of the movable body, and a raising / lowering mechanism. The driver is controlled while monitoring the detection output of the detection means in accordance with the instruction from the operation means, and the rotation mechanism is driven by the motor to rotate the movable body to a predetermined upright position or a predetermined inverted position. And a control means for rotating the movable body, the control means monitors the detection output of the detection means after the completion of the standing of the movable body, and controls the driver to control the driver at the predetermined standing position when the movable body fluctuates from the predetermined standing position. This is achieved by returning the movable body to.

According to another aspect of the present invention, setting means for setting the standing position of the movable body is provided, and the control means sets the standing position set by the setting means when the standing of the movable body is instructed. This is achieved by allowing the movable body to rotate with the target of the position.

[0008]

[Action]

 According to one aspect of the present invention, when the standing instruction operation is performed, the control means controls the driver while monitoring the detection output of the detection means, and the motor drives the rotation mechanism to move the movable body from the base. When it is rotated to a predetermined standing position and an inversion instruction operation is performed, the control means controls the motor driver while monitoring the detection output of the detection means, and drives the rotation mechanism by the motor to move the movable body to a predetermined position. Rotate to the inverted position of. Further, the detection output of the detecting means is monitored after the standing up is completed, and when the movable body changes from the predetermined standing position, the driver is controlled to return the movable body to the predetermined standing position. As a result, when using the display device, the movable body can be automatically raised from the base to a predetermined standing position and the image displayed on the display can be viewed, and the user can raise the movable body by hand. There is no need for labor, and the movable body can be automatically laid down on the base after use, which eliminates the need for the user to manually lay down the movable body. Since there is no danger of incident on the vessel, deterioration will be slowed down and life can be extended. Furthermore, even if the position of the movable body changes due to the user's hand or object accidentally touching the movable body or vibration is applied after the standing up is completed, the original standing position is automatically restored. You can save the trouble of adjusting again.

According to another aspect of the present invention, when the standing of the movable body is instructed, the control means causes the movable body to rotate with the standing position set by the setting means as a target. As a result, the image on the display can be viewed at the user's favorite standing position, which makes it easier to view the image.

[0010]

【Example】

 FIG. 2 is an external perspective view showing a use state of an in-vehicle TV according to an embodiment of the present invention. In the figure, reference numeral 10 is a main body of the apparatus as a base, which incorporates a TV tuner, a video circuit, an audio circuit and the like. 12 is a stand-up instruction key, 14 is an inversion instruction key, 16 is a stand-up position setting mode key, 18 and 20 are channel up / down keys and volume up / down keys, respectively. These keys are provided on the upper surface of the apparatus main body 10. It has been burned. The upright instruction key 12 also serves as a power-on key, and the inversion instruction key 14 also serves as a power-off key.

Reference numeral 22 denotes a lid as a movable body, which is provided at an end portion of the apparatus main body 10 so as to be able to move up and down. 24 is a case of the lid 22, 26 is an LCD matrix display fixed to the case via a heat insulating member (wood, cork, etc.) 27, and the matrix display 26 is arranged on the lower surface side of the lid 22, When the lid 22 is erected, it faces forward. The heat insulating member 27 is provided so as to surround the back surface and the side surface of the LCD matrix display 26, and the direct sunlight that hits the back surface of the lid 22 regardless of whether the lid 22 is in the upright state or the inverted state. This is to prevent the heat from being transferred to the LCD matrix display 26, and thus to prevent deterioration of the LCD matrix display 26.

Reference numeral 28 denotes a rotating portion that causes the lid 22 to move up and down with respect to the apparatus body 10. The rotating portion 28 has a structure as shown in FIG. Reference numeral 30 denotes an end portion of the lid 22, which is a cylindrical portion in which the case 24 is formed in a cylindrical shape, 32 is a circular opening provided on the left end side of the cylindrical portion 30, and 34 is a circular concave portion provided on the right end side of the cylindrical portion 30. , 36 are partition plates provided in the middle of the cylindrical portion 30 and slightly to the right. Reference numerals 38 and 40 denote support portions projecting from both ends of the end of the apparatus main body 10. The left support portion 38 is rotatably fitted in the opening 32, and the right support portion 40 is freely rotatable in the recess 34. Fits in.

A motor 42 and a gear box 44, which is coupled to a rotation shaft of the motor to reduce the speed, are integrally incorporated in a left half portion of the cylindrical portion 30, and a left end of the motor 42 is a support portion. It is fixed at 38. The output shaft 46 of the gearbox 44 penetrates the partition plate 36 and extends to the right. Reference numeral 48 is a drive side clutch plate coupled to the end of the output shaft 46, and 50 is a driven side clutch plate, which is slidably fitted in the axial direction to a rotary shaft 52 whose right end is fixed to the right end of the cylindrical portion 30. Has been done. In the case of the driven side clutch plate 50, the rotary shaft 52 is formed in a square cross section, and the rotational force of the driven side clutch plate 50 is transmitted to the rotary shaft 52. Reference numeral 54 denotes an intermediate enlarging portion formed slightly to the right of the center of the rotating shaft 52, and reference numeral 56 denotes an end enlarging portion provided near the right end of the rotating shaft 52, which is fixed to the right end of the cylindrical portion 30. Reference numeral 58 denotes a compression coil spring interposed between the intermediate enlarged portion 54 and the driven clutch plate 50, and constantly urges the driven clutch plate 50 toward the drive clutch plate 48.

As a result, the driving force of the output shaft 46 of the gearbox 44 is transmitted to the rotating shaft 52 via the driving side clutch plate 48 and the driven side clutch plate 50, and the lid 22 is moved around the supporting portions 38 and 40. It can be rotated. Further, when an excessive external force is applied to the lid 22 by accidentally touching the lid 22 or vibration of the user's hand or object, the driven side clutch plate 50 may slip with respect to the driving side clutch plate 48. Thus, only the position of the lid 22 fluctuates, and an excessive force is not applied to the output shaft 46 side of the gear box 44. The lid 22 is rotated in the upright direction when the motor 42 is normally rotated, and is rotated in the inverted direction when the motor 42 is reversely rotated.

Reference numeral 60 denotes a ring-shaped slit plate in which a large number of slits are formed at equal intervals in the circumferential direction, and the rotary shaft 52 and the compression coil spring 56 are freely inserted into the inner opening on the right side of the driven side clutch plate 50. Thus, it is arranged coaxially with the rotating shaft 52. A part of the lower side of the slit plate 60 penetrates the cylindrical portion 30 of the case 24 and extends toward the apparatus body side, and is fixed inside the apparatus body 10. The slit plate 60 has a radius slightly larger than that of the cylindrical portion 30, a concave portion 62 is provided in a part of the cylindrical portion 30, and the peripheral end portion of the slit plate 60 is loosely inserted in the concave portion 62. A sensor 64 in which a light emitting element and a light receiving element are opposed to each other with the slit plate 60 in between is installed in the recess 62. The slit plate 60 and the sensor 64 are for detecting the relative displacement amount of the lid 22 with respect to the apparatus body 10.

Reference numeral 66 is a lever plate, which is slidably fitted around the rotary shaft 52 so as to come into contact with the intermediate enlarged portion 54 from the right side. A compression coil spring 68 is interposed between the enlarged end portion 56 and the lever plate 66, and always biases the lever plate 66 toward the intermediate enlarged portion 54. Reference numeral 68 denotes an extended portion in which a part of the lever plate 66 penetrates the cylindrical portion 30 and extends inside the apparatus main body 10. Reference numerals 70 and 72 are provided inside the apparatus main body 10, respectively. A first switch that closes and outputs an upright direction rotation detection signal when the extension portion 69 tries to move upward, and a second switch that closes and outputs a fall direction rotation detection signal when the extension portion 69 moves downward. It is a switch. By closing the first switch 70, it can be seen that the lid 22 is pivoting in the inversion direction (see FIG. 4 (2)), and by closing the second switch 72, the lid 22 is erected. It can be seen that it is rotating in the direction (see (1) in Fig. 4). When the extending portion 68 contacts the first switch 70 or the second switch 72 due to the rotation of the rotating shaft 52 and the rotating shaft 52 continues to rotate in the same direction, the lever plate 66 moves on the rotating shaft 52. And slide around the axis.

The gear box 44, the output shaft 46, the driving side clutch plate 48, the driven side clutch plate 50, the rotating shaft 52, the intermediate enlarged portion 54, and the compression coil spring 58 constitute a rotating mechanism 74. As shown in FIG. 5, even when the lid 22 is placed upside down on the apparatus main body 10, the standing instruction key 12, the inversion instruction key 14, and the standing position setting mode key 16 are exposed.

Returning to FIG. 2, 76 is a protrusion provided on the lid 22, and 78 is a third switch provided near the upper surface of the apparatus main body 10. When the lid 22 is inverted and the protrusion 76 hits, the switch is closed. Outputs the inversion completion detection signal.

FIG. 1 is an overall configuration diagram of a raising / lowering device built in a vehicle-mounted TV for raising / lowering the lid 22, 82 is a driver for driving the motor 42, 84 is a detection output of the sensor 64, and This is a counting unit that obtains the rotational position of the lid 22 with respect to the apparatus body 10 from the detection outputs of the first switch 70 and the second switch 72 and outputs rotational position data. The slit plate 60 and the sensor 64, the lever plate 68, the first switch 70, the second switch 72, the third switch 78, and the counting unit 84 constitute a rotational position detecting means 86 that detects the rotational position of the lid 22. Has been done.

The counting unit 84 is composed of an up / down counter and counts up when a pulse is input from the sensor 64 while the standing direction rotation detection signal is input from the first switch 70, Further, when a pulse is input from the sensor 64 while the inverted direction rotation detection signal is input from the second switch 72, the countdown is performed and the count value is output as the rotational position data. Note that the counting unit 84 initializes the rotational position data to zero when the inversion completion detection signal is input from the third switch 78, so that a cumulative error does not occur when the lid 22 is repeatedly raised and lowered. ing.

Reference numeral 88 denotes a microcomputer, which controls the drive of the driver 82 and rotates it by the motor 42 while monitoring the detection output of the rotation position detecting means 86 in accordance with the operation of the standing instruction key 12 and the inversion instruction key 14. By driving the mechanism 74, the lid 22 is erected in a predetermined erected position, or is inverted on the apparatus main body 10. When the standing position setting mode key 16 is pressed to instruct the standing position setting mode and the standing command key 12 or the inversion command key 14 is pressed, the micro computer 88 presses these standing command keys 12 and 12. The drive of the driver 82 is controlled according to the duration of pressing of the inversion instruction key 14 or the inversion instruction key 14 to continuously rotate the lid 22 in the upright direction or the inversion direction. Then, when the standing position setting mode key 16 is pressed again to instruct the standing position setting mode, the turning position data output from the turning position detecting means 86 at that time is used as the target standing position data. The setting is registered in the internal memory 90.

Further, the microcomputer 88 receives an instruction to stand up by the standing up instruction key 12 and completes the standing up of the lid 22, and then monitors the output of the rotational position detecting means 86 to remove the lid 22 from a predetermined standing position. When it fluctuates, the driver 82 is controlled to return to the normal standing position.

FIG. 6 to FIG. 8 are flow charts showing the erection process by the microcomputer 88, which will be described below with reference to these figures.

Standing Position Setting In advance, the lid 22 is in the inverted position, the inversion completion detection signal is output from the third switch 78, and the inversion direction rotation detection signal is output from the second switch 72. (See FIG. 4 (1)). At this time, the counting unit 84 outputs zero as the rotational position data to the microcomputer 88. In addition, the standing position setting mode is in the off state.

When the user wants to set the standing position of the lid 22 at a desired angle (the angle formed by the apparatus body 10 and the lid 22), first, the standing position setting mode key 16 is pressed. Then, the micro computer 88 turns on the standing position setting mode (steps 101 and 102 in FIG. 6). Initially, since the lid 22 is in the inverted state, if the standing instruction key 12 is continuously pressed, the microcomputer 88 continuously controls the drive of the driver 82 and continuously drives the motor 42 while the standing instruction key 12 is pressed. Rotate forward. The rotation of the motor 42 is decelerated by the gear box 44, and then transmitted to the rotary shaft 52 via the output shaft 46, the drive side clutch plate 48, and the driven side clutch plate 50, so that the lid 22 moves in the upright direction. It rotates (steps 103 and 104).

At this time, since the protrusion 76 of the lid 22 is separated from the third switch 78, the third switch 78 is opened and the output of the inversion completion detection signal is stopped. When the rotary shaft 52 rotates in the upright direction, the extending portion 69 of the lever plate 66 is separated from the second switch 72, the second switch 72 is opened, the output of the inversion direction rotation detection signal is stopped, and the extending portion is extended. 69 hits the first switch 70 to close the first switch 70, and the standing direction rotation detection signal is output. In addition, a pulse is output from the sensor 64 every time the rotating shaft 52 rotates by a certain angle. When the inversion completion detection signal is not input from the third switch 78, the counting unit 84 can perform the counting operation, and when the rising direction rotation detection signal is input from the first switch 70, the pulse is output from the sensor 64. When input, it counts up from zero and outputs the count value to the microcomputer 88 as rotation position data of the lid 22.

If the lid 22 passes the desired standing position while continuing to press the standing instruction key 12, the pressing of the standing instruction key 12 is stopped. Then, the micro computer 88 stops the drive control for the driver 82 and stops the motor 42 (step 105). At this time, the rotation of the lid 22 is stopped and the pulse output from the sensor 64 is stopped (however, since the extending portion 69 of the lever plate 66 is still in contact with the first switch 70, the standing direction rotation detection signal output Will continue).

Then, this time, when the inversion instruction key 14 is pressed, the microcomputer 88 controls the drive of the driver 82 to continuously reverse the motor 42 while the inversion instruction key 14 is pressed. The rotation of the motor 42 is decelerated by the gear box 44, and then transmitted to the rotary shaft 52 via the output shaft 46, the drive side clutch plate 48, and the driven side clutch plate 50, and the lid 22 rotates in the inversion direction. (Steps 106 and 107).

When the rotary shaft 52 rotates in the inverted direction, the extension portion 69 of the lever plate 66 separates from the first switch 70, the first switch 70 opens, and the standing direction rotation detection signal output stops and The extended portion 69 hits the second switch 72, the second switch 72 is closed, and the inverted direction rotation detection signal is output. In addition, a pulse is output from the sensor 64 every time the rotating shaft 52 rotates by a certain angle. The counting unit 84 counts down when a pulse is input from the sensor 64 in a state in which the inverted direction rotation detection signal is input from the second switch 72, and the count value is used as the rotation position data of the lid 22 to be stored in the micro position. Output to the computer 88.

If the lid 22 reaches the desired standing position while continuing to press the inversion instruction key 14, the pressing of the inversion instruction key 14 is stopped. Then, the microcomputer 88 stops the drive control for the driver 82 and stops the motor 42 (step 105). At this time, the rotation of the lid 22 stops and the pulse output from the sensor 64 stops (however, since the extending portion 69 of the lever plate 66 remains in contact with the second switch 72, the inversion direction rotation detection signal output continues. To).

When the standing position setting mode key 16 is pressed after the lid 22 is set to the desired standing position in this way, the microcomputer 88 is output from the counting unit 84 of the rotation position detecting means 86 at that time. The turning position data is set and registered in the memory 90 as the target standing position data, and the standing position setting mode is turned off (steps 108 to 110). After that, when the user wants to continue listening to the TV, if the stand-up instruction key 12 is pressed, the micro computer 88 does not output the inversion completion detection signal from the third switch 78, so the power is turned on and the LCD matrix display is performed. The TV image is displayed on the device 26 (steps 201 to 203 in FIG. 9). This allows the user to watch the TV image at the desired standing position. Since the heat insulating material 27 is interposed between the LCD matrix display 26 provided on the lid 22 and the case 24, even if the sunlight directly hits the case 24 of the lid 22 through the front glass from the front of the vehicle, the LCD Almost no heat is transmitted to the matrix display 26, and deterioration is suppressed.

Inversion processing When the user wants to invert the lid 22 after listening to the TV, the inversion instruction key 14 is pressed once to instruct the inversion. Then, after confirming that the inversion completion detection signal is not input from the third switch 78 (steps 301 and 302 in FIG. 8), the microcomputer 88 turns off the power to turn off the TV image (step 303). , The driver 82 is controlled to continuously rotate the motor in the reverse direction. The rotation of the motor 42 is decelerated by the gear box 44, and then transmitted to the rotary shaft 52 via the output shaft 46, the drive side clutch plate 48, and the driven side clutch plate 50, and the lid 22 rotates in the inversion direction. (Step 304).

When the rotary shaft 52 rotates in the inverted direction, the extended portion 69 of the lever plate 66 hits the second switch 72 to close the second switch 72, and the inverted direction rotation detection signal is output. Further, a pulse is output from the sensor 64 every time the rotating shaft 52 rotates by a certain angle. The counting unit 84 counts down when a pulse is input from the sensor 64 while the inverted direction rotation detection signal is input from the second switch 72, and the count value is used as rotation position data of the lid 22 as a micro position. Output to the computer 88.

When the lid 22 continues to rotate in the inversion direction and the protrusion 76 of the lid 22 hits the third switch 78 provided in the apparatus body 10, the third switch 78 closes and the inversion completion detection signal is sent to the micro. Output to the computer 88. The microcomputer 88 that has received this inversion completion detection signal stops the drive control of the driver 82 and stops the motor 42 (steps 305 and 306). At this time, the count value of the counting unit 84 of the rotation position detecting means 86 is initialized to zero by the input of the inversion completion detection signal.

In this way, the lid 22 is automatically inverted by simply pressing the inversion instruction key 14 after watching the TV, so that the user does not have to manually invert the lid 22. In addition, after the inversion is completed, there is no possibility that the sunlight rays that enter the passenger compartment through the windshield or the side glass will directly hit the display surface of the LCD matrix display 26, so the deterioration of the LCD matrix display 26 will be delayed and the service life will be reduced. Can be extended.

After the standing up process , when the user wants to listen to the TV again, if the same standing up position as the previous time is satisfactory, the standing up instruction key 12 is pressed once to instruct the inversion. Then, after confirming that the inversion completion detection signal is input from the third switch 78, the micro computer 88 turns on the power to display the TV image (steps 201 and 202 in FIG. 7, 204), the drive of the driver 82 is controlled to continuously rotate the motor in the forward direction. The rotation of the motor 42 is decelerated by the gear box 44 and then transmitted to the rotary shaft 52 via the output shaft 46, the drive side clutch plate 48, and the driven side clutch plate 50, and the lid 22 rotates in the inversion direction. (Step 205).

When the rotary shaft 52 rotates in the upright direction, the extending portion 69 of the lever plate 66 hits the first switch 70, the first switch 70 is closed, and the upright direction rotation detection signal is output. Further, a pulse is output from the sensor 64 every time the rotating shaft 52 rotates by a certain angle. The counting unit 84 counts up from zero when a pulse is input from the sensor 64 while the standing direction rotation detection signal is input from the first switch 70, and the counted value is counted from the rotation position of the lid 22. The data is output to the microcomputer 88.

The microcomputer 88 continues the drive control of the driver 82 while monitoring the turning position data input from the counting unit 84, and the turning position data matches the target standing position data registered in the memory 90. By the way, the drive control is stopped and the motor 42 is stopped (steps 206 and 207). As a result, even if the user does not stand up by hand, the lid 22 automatically becomes the standing position desired by the user, and the TV image can be viewed from a position where it is easy to see.

It should be noted that, while the lid 22 is performing an upright motion, a user's hand or object accidentally hits the lid 22 and a pressing force in the inversion direction is exerted, so that the driven side clutch plate 50 of the rotating mechanism 74 is actuated. When the lid 22 rotates in the inversion direction while sliding with respect to the drive side clutch plate 48, the rotation shaft 52 rotates in the inversion direction, so that the extending portion 69 of the lever plate 66 hits the second switch 72 and the second switch 72. Is closed, a rotation detection signal is output in the inverted direction, and a pulse is output from the sensor 64. At this time, the counting unit 84 counts down the count value with the pulse input from the sensor 64, detects the accurate rotation position of the lid 22, and outputs the rotation position data. In addition, when the pushing force is relatively weak and the rotation of the lid 22 is stopped, no pulse is output from the sensor 64. Therefore, the rotation position data output from the counter 84 is the lid position data at that time. The rotation position of 22 does not change as it is shown.

After that, when the external force disappears, the rotational force of the motor 42 is transmitted to the rotary shaft 52 side, and the lid 22 starts to rotate in the upright direction again. At this time, the extending portion 69 of the lever plate 66 moves to the first position. The first switch 70 is closed by hitting the first switch 70, the standing direction rotation detection signal is output, and the sensor 64 outputs a pulse. Therefore, the counting unit 84 counts up each time a pulse is input from the sensor 64 and detects the accurate rotational position of the lid 22. After that, if the rotational position data detected by the counter 84 coincides with the target standing position data, the microcomputer 88 stops the motor 42, so that the lid 22 is correctly stood at the desired position.

After the change correction of the standing position variation correction lid 22 is completed and the motor 42 is stopped, the microcomputer 88 detects that the turning position data output from the turning position detecting means 86 is out of the target standing position data. It is monitored whether there is any (step 208). If the user's hand or object accidentally hits the lid 22, or vibration is applied, a pushing force works in the standing direction or a pushing force works in the upside down direction, and the driven side clutch plate of the rotating mechanism 74. When the lid 22 rotates in the upright direction or the upside down direction and the position changes due to the slippage of 50 with respect to the drive side clutch plate 48, the rotation shaft 52 rotates in the upright direction or the upside down direction. The extended portion 69 of the plate 66 hits the first switch 70 or the second switch 72 to close the first switch 70 or the second switch 72, and the standing direction rotation detection signal or the inverted direction rotation detection signal is output, and the sensor Pulse is output from 64. At this time, the counting unit 84 counts up or down the count value with the pulse input from the sensor 64, and outputs accurate rotation position data of the lid 22.

When the rotational position data deviates from the target standing position data, the microcomputer 88 controls the drive of the driver 82 according to the direction of change of the cover 22 with respect to the target standing position, and the lid 22 is moved to the target standing position. When the standing angle is large, the motor 42 is reversely rotated (steps 209 and 210), and when the standing angle is small, the motor 42 is normally rotated (steps 209 and 211). However, when a large external force continues to work, the drive side clutch plate 48 simply slides with respect to the driven side clutch plate 50, and the rotational force of the motor 42 is not transmitted to the rotary shaft 52.

After that, when the external force disappears, the rotational force of the motor 42 is transmitted to the rotary shaft 52, and the lid 22 moves in the inverted direction (when it changes from the target standing position to the direction in which the standing angle increases) or the standing direction ( It turns from the target standing position (when it changes in the direction that the standing angle decreases). When the motor 42 rotates the lid 22 in the inverted direction, the second switch 72 is closed, so that the counting unit 84 counts down the count value based on the pulse output from the sensor 64 every time the rotation shaft 52 rotates by a certain angle. Then, the rotational position of the lid 22 is detected. On the contrary, when the motor 42 rotates the lid 22 in the upright direction, the first switch 70 is closed, so that the counting unit 84 counts based on the pulse output from the sensor 64 every time the rotating shaft 52 rotates by a certain angle. The rotational position of the lid 22 is detected by incrementing the numerical value.

When the rotational position data output from the counting unit 84 matches the target standing position data, the microcomputer 88 stops the drive control of the driver 82 and stops the motor 42 (steps 208, 212). .. As a result, after the standing up is completed, even if the position of the lid 22 is changed by accidentally touching the lid 22 with the user's hand or an object or applying vibration, the original standing position is automatically restored. , You can save the trouble of re-adjusting the standing position.

Even after the target standing position is once set, the standing position setting mode key 16 is pressed by pressing the standing position setting mode key 16 when the lid 22 is in the inverted position or in the standing position. After that (steps 101 and 102 in FIG. 6 or step 213 in FIG. 7 and step 102 in FIG. 6), the lid 22 is desired by continuously pressing the upright instruction key 12 or the inversion instruction key 14 in the same manner as described above. Then, if the standing position setting mode key 16 is pressed again to turn off the standing position setting mode, the turning position data output from the turning position counter 84 at that time is used as a memo. Since the target upright position data of 90 is rewritten and set, the target upright position can be arbitrarily changed.

In the above-described embodiments, the vehicle-mounted TV is taken as an example, but the invention can be applied to other display devices such as a navigation device. Also, the case where the LCD matrix display (26) is used has been taken as an example, but the present invention can be similarly applied to other types of displays that are weak to direct sunlight, such as LED displays. Further, the function of the counting unit (84) may be performed by a micro computer, and the detection of the rotational position of the lid (22) may be performed by the slit plate (60), the sensor (64), the lever plate ( 66), the first switch (70), the second switch (72), the third switch (78), and the rotation position detecting means (86) including the counting unit (84). 52) A / B two-phase output rotary encoder, direction discriminator, and up / down counter are combined to form the rotational position detecting means, and the absolute position of the absolute encoder connected to the rotary shaft (52) is the rotational position. You may make it comprise a detection means.

[0047]

[Effect of the device]

 According to one of the present inventions, when the standing instruction operation is performed, the control means controls the driver while monitoring the detection output of the detection means, and the motor drives the rotation mechanism to move the movable body from the base. When the inversion instruction operation is performed by rotating the movable body to a predetermined upright position, the control means controls the motor driver while monitoring the detection output of the detection means, and the rotation mechanism is driven by the motor to move the movable body to a predetermined inversion position. When the movable body fluctuates from the predetermined upright position, the driver is controlled to return the movable body to the predetermined upright position when the movable body fluctuates from the predetermined upright position. With this configuration, when using the display device, the movable body can be automatically raised from the base to a predetermined standing position and the image displayed on the display can be viewed, and the user can raise the movable body by hand. Time and effort It is not necessary, and the movable body can be automatically placed on the base after use, eliminating the need for the user to invert the movable body by hand. Since there is no danger of being incident on, the deterioration will be delayed and the life can be extended. Furthermore, even if the position of the movable body changes due to the user's hand or object accidentally touching the movable body or vibration is applied after the standing up is completed, it automatically returns to the original standing position. You can save the trouble of adjusting again.

According to another aspect of the present invention, when the standing of the movable body is instructed, the control means causes the movable body to rotate with the standing position set by the setting means as a target. Since it is configured as described above, the image on the display can be viewed at the standing position desired by the user, and the image can be easily viewed.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a vehicle-mounted TV raising / lowering device according to an embodiment of the present invention.

FIG. 2 is an external perspective view showing a usage state of the vehicle-mounted TV according to the embodiment of the present invention.

FIG. 3 is a partial cross-sectional view showing a configuration of a rotating portion with a part omitted.

FIG. 4 is an explanatory view showing the operation of the lever plate.

FIG. 5 is an external perspective view showing a non-use state of the vehicle-mounted TV.

FIG. 6 is a first explanatory diagram showing a tilting process by a microcomputer.

FIG. 7 is a second explanatory diagram showing a tilting process by a microcomputer.

FIG. 8 is a third explanatory diagram showing a tilting process by a microcomputer.

[Explanation of symbols]

 10 Device Main Body 12 Standing Instruction Key 14 Inverting Instruction Key 16 Standing Position Setting Mode Key 22 Lid 26 LCD Matrix Display 27 Heat Insulating Member 42 Drassbar 74 Rotating Mechanism 78 Third Switch 82 Driver 86 Rotating Position Detecting Means 88 Microcomputer 90 Memory

Claims (2)

[Scope of utility model registration request] 1. A base, a movable body that has an indicator inside, and is provided so as to be capable of being raised and lowered with respect to the base, a raising and lowering operation means for instructing standing and inversion of the movable body, and A rotating mechanism for performing a tilting operation, a motor for driving the rotating mechanism, a driver for driving the motor, a detecting means for detecting the rotating position of the movable body, and a detecting means according to an instruction from the tilting operating means. The driver is controlled while observing the detection output of, and the rotation mechanism is driven by the motor to rotate the movable body to a predetermined upright position,
A control means for rotating the movable body to a predetermined upside down position is provided, and the control means monitors the detection output of the detection means after completion of the standing of the movable body, and controls the driver when a change from the predetermined standing position occurs. The display device is characterized in that the movable body is returned to the upright position. 2. A setting means for setting the standing position of the movable body is provided, and when the standing means of the movable body is instructed, the control means rotates the movable body with the standing position set by the setting means as a target. The display device according to claim 1, wherein the display device is configured to perform.