Display device

The present invention relates to a display device which is attached to the ceiling of a vehicle or the like and enables an opening / closing operation such as opening when used and closing when stored.

A structure is known in which a video display as a display means is openably and closably attached to the ceiling of a vehicle interior (see, for example, Patent Document 1). In such a prior art, the rectangular display is connected to the housing via a hinge and has a support structure that can rotate around a fixed fulcrum. When stored, the screen of the display is closed along the ceiling, and when used, the screen is displaced until it is almost vertical so that the viewer can easily see it, so that it is in the so-called open state. In this open state, the display occupies approximately the vertical dimension of the display below the fixed fulcrum.

In recent years, displays have tended to become larger. As the vertical dimension of the display increases, this enlarged dill play obstructs the rear view of the driver's rear-view mirror, which is a problem from the viewpoint of safety. Sporty-type cars and sunroof-type cars have lower ceilings in the passenger compartment than ordinary cars, so the only way to prevent the display from obstructing the rear view was to reduce the size of the display. It has a structure in which a video display as a display means can be opened and closed on the ceiling of the passenger compartment, and a linear moving plate driven by a motor and the display means are connected by a pulling arm to perform linear motion of the linear moving plate. A structure is known in which the display means is rotated via the pull-up arm (see, for example, Patent Document 2). In such a conventional technique, not only the pulling arm itself is a design obstacle, but also a part of the pulling arm may be hung on the display and cannot be seen when visually recognizing from an angle. The rear-view mirror of the driver will block the rear view, which may be a problem from the viewpoint of safety. In addition, there is a risk of accidentally pinching a finger because the gap is displaced when the pulling arm operates.

<patcit num="1"><text>Japanese Patent Application Laid-Open No. 2002-193045</text></patcit><patcit num="2"><text>Japanese Unexamined Patent Publication No. 2004-182049</text></patcit>

<p> Since the conventional display means support structure is a fixed fulcrum, there is a concern from the viewpoint of safety because the rear view of the driver's rearview mirror is obstructed due to the increase in size of the display, or the display is displayed to the extent that it does not obstruct the rear view. In the case of miniaturization, it was not possible to give the viewer a sense of satisfaction from the viewpoint of the information transmission function, and there were problems to be solved for each.</p><p> The present invention has been made to solve the above problems, and an object of the present invention is to provide an improved display device that does not block the rear view of the driver's rearview mirror even when a large display is used. To do.</p>

<p> The display device according to the present invention is<u style="single">In a display device provided with a display means that can rotate in the opening / closing direction, a rotation shaft of the display means, and a support means for the rotation shaft, the display means is rotated by a predetermined angle around the rotation shaft. In this case, the rotating shaft moving means is provided with a rotating shaft moving means for shifting the rotating shaft in a predetermined direction with respect to the rotating shaft supporting means, and the rotating shaft moving means is from the closed state to the open state of the display means. When rotated, the rotation axis is shifted so that the display screen of the display means moves upward by a predetermined distance when viewed from the viewer.</u>I decided.</p>

<p> According to the present invention, since the rotation shaft is displaced as the display means is opened, the rear view can be widened by the amount corresponding to this displacement, and a large display device can be used while ensuring safety. Alternatively, since the rotation shaft is driven by a motor via a gear, a member such as a pull-up arm that may obstruct the rear view becomes unnecessary.</p>

<figref num="1">It is a perspective view of a display and its support mechanism.</figref><figref num="2">It is the figure explaining the displacement state of the display in the vehicle interior and the rear view of a driver.</figref><figref num="3">It is a front view of a display and its support mechanism.</figref><figref num="4">It is a partial cross-sectional plan view of a display and its support mechanism.</figref><figref num="5">It is a figure explaining the meshing position of a rack and a pinion in a state where a display is closed.</figref><figref num="6">It is a figure explaining the meshing position of a rack and a pinion in a state where a display is open.</figref><figref num="7">It is a figure explaining the sliding piece member.</figref><figref num="8">It is a front view which showed the display in a closed state.</figref><figref num="9">It is a front view which showed the state in the process of transitioning from a closed state to an open state.</figref><figref num="10">It is a front view which showed the state in the process of transitioning from a closed state to an open state.</figref><figref num="11">It is a front view which showed the display in a closed state.</figref><figref num="12">It is the figure which showed the influence on the rear view in comparison with the prior art.</figref><figref num="13">It is a front view which showed the display in a closed state.</figref><figref num="14">It is a front view which showed the state in the process of transitioning from a closed state to an open state.</figref><figref num="15">It is a front view which showed the state in the process of transitioning from a closed state to an open state.</figref><figref num="16">It is a front view which showed the display in a closed state.</figref><figref num="17">It is a figure which compared and showed the position of the display in the closed state between Embodiments 1 and 2.</figref><figref num="18">It is a perspective view of the display in an open state.</figref><figref num="19">It is a front view explaining the electric opening / closing mechanism of a display.</figref><figref num="20">It is a side view explaining the electric opening / closing mechanism of a display.</figref><figref num="21">It is sectional drawing of the main part explaining the braking means.</figref><figref num="22">It is explanatory drawing of the influence on the rear view of a rearview mirror.</figref><figref num="23">It is a perspective view of the display in an open state.</figref><figref num="24">It is a front view explaining the electric opening / closing mechanism of a display.</figref><figref num="25">It is a figure explaining the rotation axis movement operation of a display stepwise.</figref><figref num="26">It is a figure explaining the rotation axis movement operation of a display stepwise.</figref><figref num="27">It is explanatory drawing of the influence on the rear view of a rearview mirror.</figref>

Hereinafter, in order to explain the present invention in more detail, the best mode for carrying out the present invention will be described with reference to the accompanying drawings. The same members and the same functions are represented by the same reference numerals. Embodiment 1. In FIG. 1, the display 1 as an example of the display means has a rectangular plate shape that is long in the horizontal direction (horizontal direction), and can be rotated around a rotation shaft 2 integrated with the display 1. The rotating shaft 2 is supported by a bracket 3 as a supporting means. The rotating shaft 2 projects concentrically to the left-right end of the display 1, and the right side of FIG. 1 has the same support structure as the support structure on the left side. The bracket 3 is fixed to the plate 4 that constitutes the ceiling of the passenger compartment.

In Figure 1, Display 1 is open and open, with the screen occupying a position where it hangs at an angle to the vertical plane. When storing, put your hand on the lower end of the display 1 and pull it backward, and then pull it up. As a result, the display 1 rotates about the rotation shaft 2, and the rotation shaft 2 is displaced upward by the rotation shaft moving means 18 described later, and finally the screen is in a closed state substantially parallel to the plate 4. Can be.

In FIG. 2, the open state of the display 1 is shown by a solid line, and the closed state of the display 1 is shown by a two-dot chain line. Under the open state shown by the solid line, the viewer hung on the rear seat 5 can see the display 1 well. On the other hand, when the driver of the driver's seat 6 located in the front confirms the rear by the rearview mirror 7, the lower end level L1 of the display 1 is retracted to a position that does not block the driver's view.

In FIG. 2, when the display 1 is in the open state and in the closed state, the position of the rotation shaft 2 is a predetermined amount in a predetermined direction (vertical direction in the first embodiment) (in the first embodiment). The minimum amount of movement that can secure a position that does not block the driver's rear view) is shifting. The shift of the rotating shaft 2 is performed by a rotating shaft moving means including a combination mechanism of the rack 14 and the pinion 9 provided at the connecting portion between the rotating shaft 2 and the bracket 3.

The rotating shaft moving means will be described with reference to FIGS. 3 and 4. In FIG. 3, the plate 4 is fixed to a ceiling plate 11 which is an interior member provided inside the roof member 10 of the vehicle and the roof member 10. The display 1 in the closed state is housed in the design panel 12 provided on the ceiling plate 11.

The pinion 9 is integrally fixed to the rotating shaft 2. The bracket 3 is formed with a guide groove 13 formed of a long groove in the vertical direction. The rotating shaft 2 is engaged so as to rotate through the guide groove 13 and move along the groove. As a result, the guide groove 13 limits the shift direction of the rotation shaft 3 to the vertical direction. Further, a rack 14 that meshes with the pinion 9 is fixed to the bracket 3 in parallel with the guide groove 13.

The pinion 9, the guide groove 13, the rack 14, and the like are included as the main constituent members of the rotating shaft moving means 18, and the rotating shaft moving means 18 rotates the display 1 from the closed state to the open state due to such a configuration. In this case, the rotation axis can be shifted so that the display screen of the display means moves upward by a predetermined distance when viewed from the viewer. In addition, it can be returned to the closed state by the reverse operation.

To explain the operation, when the display 1 is in the closed state as shown in FIGS. 5 and 8, when the display 1 is rotated in the clockwise direction as shown by the arrow 15, the pinion 9 is also integrated with the rotation shaft 2. At the same time, the rotating shaft 2 is shifted in the upward direction (vertical direction) indicated by the arrow 16 because the moving direction is limited by the guide groove 13 due to the rotational power being transmitted to the rack 14 at the same time. .. The progress of this shift is shown in FIGS. 9 and 10.

Finally, the display 1 is brought into the open state shown in FIGS. 6 and 11. In this state, the rotation shaft 2 is shifted upward from the position in FIG. By rotating the display 1 in the counterclockwise direction under the open state of the display 1 shown in FIG. 6, the display 1 can be returned to the closed state shown in FIG.

Here, the rotation angle of the display 1 and the shift amount of the rotation shaft 2 have a corresponding relationship, and when the display 1 is rotated by a predetermined angle from the closed state to the open state, the rotation shaft 2 is rotated in a predetermined direction. The gear condition is set so that the lower end of the display 1 shifts upward by a predetermined distance corresponding to a position that does not block the driver's view.

In addition, for example, as shown in FIG. 7, the rotating shaft 2 is made into a sliding piece 17 made of a rectangular block so that the rotation and shifting can be smoothly performed by stabilizing the engagement of the rotating shaft 2 with the guide groove 13. The sliding piece 17 can be slidably fitted into the guide groove 13 after being pivotally supported.

The improvement of the influence of the rotating shaft moving means 18 on the rear view of the rearview mirror in the present embodiment will be described with reference to FIG. As described above, the display 1 includes a rotating shaft moving means 18 including a pinion 9, a guide groove 13, and a rack 14, the display 100 is a conventional type, and the rotating shaft 90 of the display 100 has a fixed position fulcrum support. It has become. When both the displays 1 and 100 are in the open state, the distance between the rotating shaft 2 and the rotating shaft 90 in the vertical direction (= the distance between the lower ends of the displays 1 and 100) is t8. The conventional display 100 enters the rear view 19 of the rearview mirror 7 to block the rear view, but the display 1 in the embodiment of the present embodiment does not enter the rear view 19 and has no effect on the rear view.

Embodiment 2. The second embodiment is characterized in that the shift direction of the rotation shaft 2 of the display 1 is tilted with respect to the vertical direction. In FIGS. 13 to 17, the components supporting the display 1 are shown by adding dashes (') to the same reference numerals as in the first embodiment. In the second embodiment, the shift direction of the rotation shaft 2'is tilted with respect to the vertical direction. Specifically, the direction of the guide groove 13'is tilted, and the tilting direction is the same as the tilting of the display 1 in the open state in the first embodiment.

To explain the operation, when the display 1'is in the closed state as shown in FIG. 13, when the display 1'is rotated clockwise, the pinion 9'also rotates in the same direction as the rotation shaft 2'. At the same time, when the rotational force is transmitted to the rack 14', the rotation shaft 2'shifts diagonally to the upper right because the moving direction is limited by the guide groove 13'(FIGS. 14 and 15). Finally, as shown in FIGS. 16 and 17, the display 1 moves to the position where it has entered the plate 4 (FIG. 16).

In FIG. 17, since the display 1'enters the plate 4'side from the display 1 in the first embodiment by the horizontal movement distance t9 at the fully opened position (open state), the display 1 is opened only by the horizontal movement distance t9. The external dimensions can be made compact.

As described above, since the rotation axis of the display has been a fixed fulcrum axis in the past, there is a problem that the rear view of the rearview mirror is obstructed when the size of the display is increased, and there is a limit to the increase in the size of the display. On the other hand, according to the example of the present embodiment, the size of the display can be increased by moving the rotation axis of the display close to the ceiling of the passenger compartment. Further, by moving the rotation axis of the display diagonally upward so as to enter the inside of the main body of the device, the space when the display is open can be reduced, and the living space of the occupant can be further increased. Furthermore, since it is located behind the driver's seat, the driver's rear view is further widened.

Embodiment 3. In FIGS. 18 to 20, the display 1 can rotate about a rotation shaft 20 integrated with the display 1 as a fulcrum. A bracket 30 as a supporting means for the rotating shaft 20 is hanging and fixed to the plate 4, and the rotating shaft 20 is pivotally supported by the bracket 30. The rotating shaft 2 projects concentrically to the left-right end of the display 1, and the opposite side shown in the drawing has the same support structure as the support structure shown on the side shown in the drawing. The bracket 30 is fixed to a plate 4 constituting the ceiling of the passenger compartment.

A driven gear 31 is fixed to the rotating shaft 20, and a drive gear 32 meshes with the driven gear 31. The drive gear 32 is fixed to the shaft end of the shaft 33a of the motor 33. The shaft 33a penetrates the bracket 30, and the penetrating portion is pivotally supported by the bracket 30. The motor 33 is fixed to the plate 4. Axis 33a has a motor-driven drive gear

In such a configuration, the driven gear 6 rotates in response to the rotation of the drive gear 32 by driving the motor 33, and therefore the display 1 also rotates about the rotation shaft 20. That is, the opening / closing operation of the display 1 can be performed electrically.

If the reduction ratio between the drive gear 32 and the driven gear 6 is set large, the opening and closing operation can be performed smoothly even on a large display, and the rotational movement of the motor 33 is transmitted to the rotational movement of the display via the gear. There is no need for a pull-up arm as a motion conversion means as in Patent Document 2, and there is no risk of obstructing the rear view of the driver or the like. The opening / closing angle of the display 1 can be safely and easily arbitrarily determined by determining the rotation stop timing by operating the switch of the motor 33.

In this embodiment, the drive gear 33 is directly attached to the shaft 33a of the motor 33, but depending on the drive performance of the motor 33, the drive force can be changed and transmitted by the transmission gear. However, since the motor 33 itself has a braking function with respect to the rotating shaft, even if the rotating position of the display 1 is maintained, the swing of the backlash portion in the meshing portion of the gear is unavoidable. Therefore, the display 1 vibrates (oscillates) finely due to the vibration when the vehicle is running, and the display image of the display 1 tends to be difficult to see. In addition, periodic abnormal noise is likely to occur due to the same cause.

In order to avoid this, in the present embodiment, as shown in an enlarged view of FIG. 21, a step portion is formed on the shaft 33a, and a dish shape is formed between the step portion and the bracket 30. The shaft 33a is braked by interposing the leaf spring 34 of the above. Here, the braking ability of the leaf spring 34 must be at least sufficient to stop the rotation of the display 1 due to its own weight moment.

The motor 33 has a torque that allows it to rotate despite the braking, and makes it rotatable. As a result, the display 1 does not vibrate finely due to vibration during vehicle running, and the display image of the display 1 becomes easier to see. In addition, periodic abnormal noise is not generated. When the display 1 is stored, it is rotated counterclockwise from the open state shown in FIG. 18 until the display 1 is substantially horizontal around the rotation axis 20, and the display is displayed in the notch 4a of the plate 4. Put 1 in.

In the above, when the display 1 enters the rear view 19 of the rearview mirror 7 at the opening angle shown in FIG. 22 (a) and blocks the rear view, the motor 33 is driven to show the rear view 22 (b). By setting the opening angle and retracting the end of the display 1 out of the rear view 19 of the rearview mirror 7, the rear view can be secured by shifting the display 1 by the interval t1.

Since the height of the eyes of the display 1 differs depending on the person, it is necessary to adjust the opening / closing angle for each person sitting on the seat. However, in the configuration provided with the leaf spring 34, the rotation resistance of the display 1 is large. Therefore, manual operation requires considerable operating force. In this respect, in this example, since it is driven by a motor, it can be easily adjusted. In addition, by using a motor drive, even a child who cannot reach the display 1 can open / close the display 1 or adjust the drive by operating a switch on the remote controller. Furthermore, it is possible to give a sense of luxury by using an electric drive operated by a remote controller.

Embodiment 4. FIG. 23 shows a state in which the display 1 is open. In the fourth embodiment, the display 1 is opened by rotating around the rotation shaft 35 from the state where the display 1 is housed in the notch 4a. In response to opening the display 1, the rotation shaft 35 is guided (shifted) upward by the arc-shaped guide slit 37 formed in the bracket 36 hanging and fixed to the plate 4. Further, in response to closing the display 1, the rotation shaft 35 is guided by the guide slit 37 and moves downward.

As described above, in the fourth embodiment, as shown in FIG. 23, when the display 1 is rotated by a predetermined angle around the rotation shaft 35 integrated with the display 1, the rotation shaft 35 is supported. It is characterized in that it is provided with a rotating shaft moving means 38 that shifts the rotating shaft 35 in a predetermined direction with respect to the bracket 36 as a means.

FIG. 24 is a diagram showing the rotating shaft moving means 38 decomposed into the main body side (plate 4 side) shown in FIG. 24 (a) and the display 1 side shown in FIG. 24 (b). In FIG. 24 (a), a drive gear 32'driven by a motor (not shown) is pivotally supported on the bracket 36.

The guide slit 37 is an arc-shaped slit having the same center as the axis of the drive gear 32', and has a size that allows the rotating shaft 35 to be slidably fitted. The rack gear 39, which has an arc shape slightly smaller than the guide slit 37 and has the same center as the axis of the drive gear 32', is fixed to the bracket 36. In FIG. 24 (b), the rotating shaft 35 is fixed to the display 1, and the driven gear 31'and the pinion 40 are coaxially integrated on the rotating shaft 35.

In the state shown in FIG. 24 (c) in which the display 1 is assembled to the bracket 36, the rotating shaft 35 fits into the guide slit 37, the pinion 40 meshes with the rack gear 39, and the driven gear 31'becomes the drive gear 32'. It is in mesh.

Hereinafter, in (1) to (4), the state when the display 1 is opened and closed, and the rotation and shift (movement) of the rotating shaft 35 corresponding to the opened and closed state will be described. Note that FIGS. 26 (b) and 26 (b') show the gears 32'and 31' in FIGS. 26 (a) and 26 (b) simply removed for convenience of explanation. .. (1) Storage state As shown in FIG. 25 (a), the display 1 is housed in the notch 4a. At this time, the rotation shaft 35 has stopped rotating in FIG. 26 (a), and the rotation shaft 35 is located at the lower end of the guide slit 37 in FIG. 26 (a').

(2) Open operation In FIG. 26 (a), by driving a motor (not shown), when the drive gear 32'rotates in the direction indicated by the arrow, the driven gear 31'that meshes with the drive gear 32'rotates, and at the same time, with the driven gear 31'. The integral rotating shaft 35 rotates, and the display 1 shifts from the stored state (closed state) shown in FIGS. 25 (a), 26 (a), and (a') to the open operation. The state of the display 1 during this open operation is shown in FIG. 25 (b). In addition, the rotation of the rotating shaft 35 causes the pinion 40 integrated with the rotating shaft 35 to rotate, and while the pinion 40 rotates, the pinion 40 moves upward along the guide slit 37 and the arc of the rack gear 39 together with the rotating shaft 35. Sist (move).

(3) Visual condition The rotating shaft 35 is guided by the guide slit 37 along with the rotation and moves upward along a locus along the arc, and the display 1 also rotates with the rotation of the rotating shaft 35 and is in the rotating operation (FIG. 25). Through (b)), the visual state suitable for visual recognition shown in FIGS. 25 (c), 26 (a), and 26 (a') is reached. Until this visual state is reached, the rotation of the drive gear 32'is transmitted to the driven gear 31' and the display 1 opens. Further, as shown in FIG. 26 (b'), the pinion 40 rotates with the rotation of the driven gear 31', and the rotation shaft 35 rises along the guide slit 37.

(4) Open operation upper limit The angle of the display 1 in the visual state is not uniform depending on the position of the person using the display 1 with respect to the display 1 and the height of the eyes. The angle of the display 1 can be adjusted until the rotating shaft 35 hits the upper limit of the end of the guide slit 37 (FIG. 25 (d)), and the position where the rotating shaft 35 hits the upper limit of the end of the guide slit 37 is the position of the display 1. This is the upper limit position of the opening operation of.

By reversing the motor (not shown), the drive gear 32'is reversed, and the display 1 is restored to the display retracted state shown in FIGS. 25 (a), 26 (a), and 26 (a'). As described above, the feature of the fourth embodiment is that the rotation shaft 35 moves up in response to the operation of opening the display 1 and the rotation shaft 35 moves down in response to the operation of closing the display 1. is there.

In FIG. 27, which compares the effects of the rearview mirror 7 on the rear view of the rearview mirror 7 of the third embodiment and the fourth embodiment, the position of the rotating shaft 2 is on the bracket 30 in the third embodiment according to the opening operation of the display 1. However, in the fourth embodiment, there is a difference that the position of the rotating shaft 35 moves upward on the bracket 36.

As a result, when the display 1 is opened to the same tilt angle with respect to the vertical in the third and fourth embodiments, the position of the rear end of the display 1 in the height direction is the position of the room mirror 7 in the fourth embodiment. While it is retracted outside the rear view 19, it is located in the rear view 19 in the third embodiment, and "the distance between the rotation shaft 35 and the rotation shaft 25 in the vertical direction" = " There is a difference of "vertical spacing" = "t2" at the rear end of display 1.

Therefore, it can be said that the fourth embodiment does not obstruct the rear view of the rearview mirror 7 when the same viewing angle is taken. Although not shown in the third embodiment, the same applies to the prevention of vibration and vibration noise of the display 1 by providing a braking means such as a leaf spring according to the example in the third embodiment. You can make a profit.