JPH11342798A - Car-mounted display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To carry out the projection and storage of a monitor electrically and set the monitor in a state easy to see without sacrificing the rearside visual recognition property by a back mirror. SOLUTION: This device has a box body 10 fixed to the ceiling of a cabin, a monitor 20 movable between the state stored in the box body 10 and the state projected from the box body 10 downward, monitor drive mechanism 40, 70 for driving the monitor 20 between both states by a prescribed motion and a power generation means 30 consisting of a motor 31 and transmission mechanism G1-G6, PG1, PG2 for carrying out the prescribed motion by transmitting the power of the motor 31 to the monitor drive mechanism. Further, the storage CS of the monitor 20 is provided in the space of the vehicular rearside of the box body and also the power generation means 30 is arranged and fixed in the space of the vehicular more frontside than the monitor storage CS of the box body 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspended vehicle-mounted display device fixed to a ceiling of a passenger compartment, and more particularly to a device capable of driving a monitor between a housed state and a used state.

[0002]

2. Description of the Related Art A hanging type display device is provided mainly for a rear seat occupant of a vehicle to enjoy a TV broadcast or the like, and is fixed to a position slightly above a ceiling of a passenger compartment. The monitor is housed in the housing (unused state) and protruded downward from the housing (used state).
However, in the conventional apparatus, the operation of projecting and housing the monitor is manually performed.

[0003]

In the case of a suspended display device, it is necessary to hold the monitor with a relatively large force in both the housed state and the used state in order to prevent the monitor from moving undesirably due to its own weight. . Therefore, a large force is required to manually drive the monitor, and the operability is poor. In addition, in order to set the monitor in a state in which it is easy to see the monitor, it is desirable to increase the amount of projection of the monitor in the use state.

An object of the present invention is to provide an in-vehicle display device capable of electrically protruding and accommodating a monitor and setting the monitor in an easy-to-view state without sacrificing rearward visibility by a rearview mirror. is there.

[0005]

FIG. 2 shows an embodiment of the present invention.
4A to 4C, the present invention relates to a housing 10 fixed to the ceiling of a passenger compartment, a state accommodated in the housing 10, and a state protruding downward from the housing 10. The present invention is applied to an in-vehicle display device having a movable monitor 20. Then, by performing a predetermined operation, the monitor 2
Monitor drive mechanisms 40, 70,
52, a motor 31, and a transmission mechanism G for transmitting the power of the motor 31 to the monitor drive mechanism to perform a predetermined operation.
1 to G6, PG1, and PG2, and a housing section CS for the monitor is provided in a space on the vehicle rear side of the housing 10 and a front side of the monitor housing section CS of the housing 10 on the vehicle side. The power generating means 30 is arranged and fixed in the space, thereby solving the above-mentioned problem. According to a second aspect of the present invention, the monitor driving mechanism is configured as follows.
The monitor drive mechanism is rotatably engaged with the engagement portion 21 a of the monitor 10, and is separated from the slider 40 that slides in the chassis 10 in the vehicle front-rear direction by the driving force transmitted from the power generation means 30. And a lever 70 that changes the posture of the monitor 20 in conjunction with the movement of the monitor engagement portion 21a in accordance with the movement of the slider 40; And a vertical position changing mechanism 52 for moving the monitor engagement portion 21a up and down with respect to the slider 40 in accordance with the movement of the slider 40. Claim 3
According to the first invention, the monitor 20 is housed in the housing 10.
, And a second position at which the monitor 20 protrudes from the housing 10.
In the range where 0 is from the first position to the predetermined intermediate position, the vertical position changing mechanism 52 holds the monitor engagement portion 21a at the same height position, and the slider 40 moves from the predetermined intermediate position to the second position. In the range, the monitor engagement portion 21a is
0, and the lever 70 tilts the monitor 20 toward the front of the vehicle as the monitor engagement portion 21a descends. According to the invention of claim 4, the vertical position changing mechanism 52 is constituted by a cam which engages with the monitor engaging portion 21a. According to the fifth aspect of the present invention, the monitor 10 is engaged with the monitor 20 housed in the housing 10.
Lock mechanisms 81, 82 movable between a lock position for restricting the protrusion from the lock and a lock release position for releasing the restriction.
Is further provided. In the invention of claim 6, the lock mechanism includes a roller 82 which is engaged with the concave portion 22 formed on the outer surface of the monitor 20. The invention according to claim 7 further includes biasing means 61 and 62 which are engaged with a part of the monitor 20 and bias the monitor 20 in a direction in which the monitor 20 is housed in the housing 10. The invention according to claim 8 is configured such that the monitor 20 is urged toward the front of the vehicle by the urging means and simultaneously urged toward the upper side of the vehicle.

[0006] In the section of the means for solving the above-mentioned problems, which explains the configuration of the present invention, the drawings of the embodiments are used to make the present invention easier to understand. However, the present invention is not limited to this.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic perspective view of a suspended display device mounted on a vehicle according to the present invention. The display device includes a housing 10 fixed to a ceiling of a vehicle compartment, and a monitor 20 disposed in the housing 10. Monitor 2
0 can be moved between a housing position housed in the housing 10 and a use position protruding from the housing 10, and the movement is performed electrically in response to an operation of the remote controller RM. Hereinafter, a configuration for realizing this motorized monitoring operation will be described in detail.

FIG. 2 is a plan view showing the internal structure of the housing 10 (a view seen from below when the vehicle is mounted), and FIG.
FIG. 2 is a diagram of the inside of the camera as viewed from the side. A housing CS for housing the monitor 20 is provided in a space on the vehicle rear side (space in the direction A) of the housing 10, and a power generation device 30 for driving the monitor is provided on the front side of the housing. Power generator 30
Is for driving the monitor 20 by sliding a substantially U-shaped slider 40. The slider 40 includes a pair of left and right slide portions 41 each having a rack portion 41a and an upright portion 41b, and a connecting portion 42 connecting the two slide portions 41. Guide pins 41c protruding from the left and right upright portions 41b are provided. Straight groove 51 of cam member 50 (FIG. 4)
Is engaged. As shown in FIG. 3, a guide groove 41d in the vertical direction of the vehicle is formed in the upright portion 41b, and a follower pin 21a of the monitor 20, which will be described later, is engaged with the guide groove 41d.

In FIG. 2, the power generating device 30 includes one motor 31, and the rotation of the worm 31a attached to the output shaft of the motor 31 is transmitted to the pinion PG1 via a plurality of gears G1 to G6. The pinion PG1 is connected to the pinion PG2 via a shaft member 32, and these pinions PG1 and PG2 are connected to the left and right rack portions 4 of the slider 40.
1a. Therefore, the pinion PG1,
The rotation of the PG2 causes the slider 4 to move through the rack 41a.
0 slides in the front-rear direction of the vehicle (B-A direction), and at this time, the movement of the slider 40 is guided by the guide pins 41 c engaging with the rectilinear grooves 51 of the cam member 50. The motor 3, the gears G1 to G6 and the shaft member 32 are bracket BR
It is fixed to the housing top plate 11 via 1 to BR4.

The cam members 50 are respectively provided along the inner surfaces of the both side plates 12 of the housing 10, and as shown in FIG.
Has a cam groove 52 below. The cam groove 52 extends substantially horizontally from the end in the direction B (the end on the front side of the vehicle) to the middle position, but is inclined downward from the middle position to the end (the end on the rear side of the vehicle) in the direction A. I have. The follower pin 21a of the monitor 20 is engaged with the cam groove 52. A guide groove 53 for guiding the movement of the engaging member 61 is provided further below the cam groove 52. The engagement member 61 constitutes a play removing mechanism of the monitor 20, and a pin 61 a protruding from the rear surface side is engaged with the guide groove 53. A tension spring 62 is interposed between the engaging member 61 and the spring hook 54 of the cam member 50, and the urging force of the spring 62 causes the engaging member 61 to move to B
Biased in the direction. The tip of the engaging member 61 is always the cam groove 5
2 and engage with the follower pin 21a. 56
Is a guide groove for guiding the expansion and contraction of the spring 62.

One end of each of the left and right levers 70 is rotatably connected to a lever mounting portion LC provided below the left and right cam members 50, and the other end of the lever 70 is rotatably connected to both side surfaces of the monitor 20. Be linked. Follower pins 21a project from left and right portions of the upper surface of the monitor 20 via brackets 21. The follower pins 21a penetrate the guide grooves 41d formed in the slider standing portion 41b as described above, and the cam grooves 52 of the cam member 50 are formed. Is engaged. A tension spring 15 is interposed between the other end of the lever 70 and a spring hook 12a fixed to the casing side plate 12, and the biasing force of the spring 15 causes the lever 70 to rotate clockwise in FIG. Biased in the direction.

FIG. 5 shows the monitor 20 and the slider 4 described above.
FIG. 2 is a housing plan view showing a state in which a lever 0, a lever 70, and a power generation device 30 are removed. A pair of left and right lock levers 81 are provided along the top plate 11 of the housing 10, and these lock levers 81 can be slid in the AB direction by being guided by guide pins GP protruding from the housing top plate 11. It is said.
The lock lever 81 constitutes a lock mechanism of the monitor 20, and its end in the direction A is an upright portion 81a that rises downward as shown in FIG. 3, and a roller 82 is rotatably attached thereto. As shown in FIG. 6, a pair of recesses 22 are formed on one end surface (bottom surface) of the monitor 20 at positions corresponding to the pair of rollers 82, and the rollers 82 can be engaged with the recesses 22 by moving the lock lever 81. (FIG. 7). Reference numeral 16 in FIG. 7 denotes a leaf spring for urging the roller 82 toward the monitor 20, and the base end thereof is fixed to the housing 10.
In FIG. 5, for convenience of explanation, one roller 82 is engaged with the concave portion 22 of the monitor 20 and the other roller 82 is
2, the rollers 82 are engaged / retracted with the recess 22 at the same time.

The lock lever 81 is provided in the monitor accommodation space CS.
It is driven by a lock drive mechanism 90 provided on the vehicle front side with respect to FIG. 2. The lock drive mechanism 90 has one motor 91, and the rotation of the worm 91a attached to the output shaft of the motor 91 is transmitted to the pinion PG3 via a plurality of gears G11 to G14. The pinion PG3 is connected to the pinion PG4 via a shaft member 92, and these pinions PG3, PG4 are engaged with the racks 81b of both lock levers 81, respectively. Accordingly, the rotation of the pinions PG3 and PG4 causes the two lock levers 81 to slide in the AB direction via the rack 81b, whereby the rollers 82 are engaged / retracted with the concave portions 22. The motor 91, the gears G11 to G14, and the shaft member 92 are fixed to the housing top plate 11 via brackets BR3, BR5 to BR7.

The monitoring operation of the display device configured as described above will be described. In FIG. 3, the monitor 20 is in the housed state, and the monitor angle (the angle of the monitor 20 with respect to the AB direction) is about 0 degrees. The slider 40 is located at the position closest to the B direction (first position), the follower pin 21a of the monitor 20 is at the upper end of the guide groove 41d, and the cam groove 52
At the end in the B direction. The spring 15 urges the monitor 20 in the housing direction (projection preventing direction) via the lever 70, and the pair of rollers 82 constituting the lock mechanism is engaged with the concave portion 22 of the monitor 20. It is possible to prevent the monitor 20 from undesirably protruding from the housing 10 and prevent the monitor 20 from rattling due to the vibration of the vehicle, thereby preventing generation of unpleasant noise. Since the roller 82 is pressed against the wall surface of the concave portion 22 by the leaf spring 16 as shown in FIG. 7, the backlash of the gears G11 to G14 can be prevented.

In this state, when an operation for projecting the monitor 20 is performed by the remote controller RM (FIG. 1), first, the motor 91 of the lock drive mechanism 90 is rotated forward, and the rotation is performed by the gears G11 to G14 and the pinions PG3, PG4. Is transmitted to the rack 81b via the
Slide in the direction. As a result, the roller 82 is retracted from the monitor recess 22, and the monitor 20 is allowed to move. After the motor stops, the motor 31 of the power generation device 30 is rotated forward, and the rotation thereof is controlled by the gears G1 to G6 and the pinion PG.
1, PG2 is transmitted to the rack 41a, and the slider 40 slides in the A direction. The movement of the slider 40 causes the wall surface of the guide groove 41 d to push the follower pin 21 a horizontally along the cam groove 52 to drive the monitor 20.
The lever 70 moves the spring 15
, And changes the posture (angle) of the monitor 20 as shown by a two-dot chain line in the drawing.

Thereafter, when the state shown in FIG. 8 is reached to the state shown in FIG. 9, the monitor 20 is in a substantially vertical state. At this time, the follower pin 21a is engaged with the engagement member 61 as shown in FIG. Therefore, after this, the follower pin 21a moves the engaging member 61 along the groove 56 against the urging force of the spring 62, and the urging force of the spring 62 acts on the monitor 20. Up to this point, the biasing direction of the monitor 20 by the spring 15 has been the monitor receiving direction, but the biasing direction of the lever 70 by the spring 15 is always clockwise. 20 turns around and is urged in the direction opposite to the housing direction. Note that FIG.
In FIG. 9 and FIGS. 10 to 12 to be referred to below, the bracket 21 of the monitor 20 (the portion where the follower pin 21a protrudes) is omitted for easy understanding.

When the follower pin 21a reaches the end of the horizontal portion of the cam groove 52 as shown in FIG. 10, the monitor angle becomes about 105 degrees. afterwards,
The follower pin 21a moves along the inclined portion of the cam groove 52 while moving down the guide groove 41d of the slider 40, and reaches the state of FIG. 12 through the state of FIG. During this time, the lever 70 of the monitor 20 hardly rotates with respect to the housing 10,
The monitor 20 is rotated with respect to the lever 70 by the movement of the slider 40. This operation allows the monitor 20
The upper part of the monitor 20 protrudes greatly from the housing 10 so that the screen of the monitor 20 is easy to see. On the other hand, since the lower portion of the monitor 20 moves upward by the rotation (tilt) of the monitor 20, the rearward visibility by the rearview mirror is secured. When the state of FIG. 12 is detected by a detection mechanism (not shown), the motor 31 is stopped.

The monitor angle in FIG. 12 is about 140 degrees, and at this time, as shown in FIG.
The follower pin 21a, that is, the monitor 20, is urged by the extended spring 62.
Since the edge of the engagement member 61 on the pin contact side extends obliquely, the monitor 20 is urged in the direction B and also urged upward. Of the monitor 20 in the AB direction and the vertical direction is prevented.

The use angle of the monitor can be adjusted in a plurality of steps between the state shown in FIG. 12 and the state shown in FIG.
For example, when an adjustment operation is performed by the remote controller RM in the state of FIG.
Moves in the B direction by a predetermined amount to change the monitor angle. In this range in which the angle can be adjusted, the amount of protrusion of the upper portion of the monitor is relatively large and the amount of tilt of the lower portion of the monitor toward the front of the vehicle is large at any position. . In any position, the follower pin 21a is connected to the spring 15 via the engaging member 61.
Therefore, rattling of the monitor 20 can be reliably prevented.

When the operation for housing the monitor 20 is performed, the motor 31 of the power generating device 30 is rotated in the reverse direction, and the monitor 20 is driven toward the housed state by the operation reverse to the above.
When the monitor 20 reaches the housed state (FIG. 3), the motor 31 is stopped, then the motor 91 of the lock drive mechanism 90 is rotated in the reverse direction, the lock lever 81 is driven in the B direction, and the roller 82 is engaged with the concave portion 22 of the monitor 20. Are combined. At this time,
Roller 82 smoothly rotates roller 82 into recess 2
2 can be led.

As described above, in this embodiment, the monitor 2
0 is provided in the space on the vehicle rear side of the housing 10 and the power generation device 30 is fixedly disposed in the space on the vehicle front side of the housing of the monitor 20 of the housing 10, so that the power generation device 30 is affected. The posture of the monitor 20 can be changed without the need, and the degree of freedom in design increases. As a result, as described above, it is possible to set the monitor at a position where the monitor is easy to see and does not affect the confirmation of the rear of the vehicle.

In the above embodiment, the slider 4
0, the lever 70 and the cam groove 52 constitute a monitor drive mechanism,
The motor 31 and the gears G1 to G6, PG1, PG2 serve as power generating means, the cam groove 52 serves as a vertical position changing mechanism, the lock lever 81 and the roller 82 serve as a lock mechanism, and the engaging member 61 and the spring 62 serve as biasing means. Configure each.

[0023]

According to the present invention, the power of the motor is transmitted to the monitor driving mechanism so that the monitor is driven between the housed state and the use state. Operability is good. In addition, the housing for the monitor is provided in the space on the vehicle rear side of the housing, and the power generating means is arranged and fixed in the space on the front side of the vehicle with respect to the monitor housing of the housing. It is possible to determine the amount of projection and the angle of the monitor from the housing without any need, thereby increasing the degree of freedom in design. The monitor drive mechanism is provided with a slider, a lever, and a vertical position change mechanism, and drives the slider in the vehicle front-rear direction by the motor driving force transmitted from the power generation means, and interlocks with the movement of the monitor engagement portion according to the movement of the slider. If the monitor's posture is changed by the lever and the monitor engaging part is moved up and down by the vertical position changing mechanism in accordance with the movement of the slider, the monitor can be moved in the horizontal direction and moved downward with respect to the housing. Projection and retraction and posture change can be performed only by the driving force of a single motor, and a monitor operation can be performed with a minimum configuration. If the slider is lowered from the predetermined intermediate position to the second position (final position on the monitor projecting side) and the monitor is tilted toward the front of the vehicle as the monitor is lowered, the monitor can be easily viewed. And rear visibility can be compatible. If a lock mechanism that can move between the position where the protrusion of the monitor in the housed state is restricted and the position where the restriction is released is provided, it is possible to prevent undesired protrusion of the monitor and rattling due to vehicle vibration. By providing an urging means which is engaged with a part of the monitor and urges the monitor in a direction to accommodate the monitor in the housing, it is possible to prevent rattling when the monitor is fixed in a protruding state.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing an in-vehicle display device according to an embodiment of the present invention.

FIG. 2 is a plan view showing a configuration of a monitor, a slider, a lever, a power generation device, and the like.

FIG. 3 is a side view showing the inside of the housing.

FIG. 4 is a diagram showing a cam member and a play removing mechanism when the monitor is housed.

FIG. 5 is a plan view showing a configuration of a lock mechanism and a lock drive mechanism.

FIG. 6 is a perspective view showing a configuration of an upper part of a monitor.

FIG. 7 is a view showing an engagement state of a roller with a monitor concave portion.

FIG. 8 illustrates operation of a monitor.

FIG. 9 is a view similar to FIG. 8;

FIG. 10 is a view similar to FIG. 8;

FIG. 11 is a view similar to FIG. 8;

FIG. 12 is a view similar to FIG. 8;

FIG. 13 is a view similar to FIG. 4, showing a state when the monitor is projected.

[Explanation of symbols]

 Reference Signs List 10 housing 11 housing top plate 12 housing side plate 15 extension spring 16 leaf spring 20 monitor 21 bracket 21a follower pin 22 concave portion 30 power generation device 31 motor 40 slider 41a rack portion 41b rising portion 41d guide groove 50 cam member 51 straight groove 52 Cam groove 53 Guide groove 61 Engaging member 62 Spring 70 Lever 81 Lock lever 81a Standing portion 81b Rack 82 Roller BR1-BR6 Bracket G1-G6, G11-G14 Gear PG1-PG4 Pinion RM Remote control

Claims (8)

[Claims] An in-vehicle display comprising: a housing fixed to a ceiling of a passenger compartment; and a monitor movable between a state housed in the housing and a state protruding downward from the housing. A monitor drive mechanism for driving the monitor between the two states by performing a predetermined operation; a motor; and a transmission mechanism for transmitting the power of the motor to the monitor drive mechanism to perform the predetermined operation. And a housing for the monitor is provided in a space on the vehicle rear side of the housing, and the power generating means is arranged in a space on the vehicle front side with respect to the monitor housing of the housing. An in-vehicle display device fixed. 2. A monitor drive mechanism rotatably engaged with an engagement portion of the monitor, and a slider slidably moved in the vehicle longitudinal direction in the housing by a driving force transmitted from the power generation means. A lever that is rotatably connected to the housing and the monitor side part, and that changes the posture of the monitor in conjunction with the movement of the monitor engagement part in accordance with the movement of the slider; The in-vehicle display device according to claim 2, further comprising a vertical position changing mechanism that moves the monitor engagement portion up and down with respect to the slider in accordance with the movement of the slider. 3. The vertical position change device, wherein the slider is movable between a first position for accommodating the monitor in the housing and a second position for protruding the monitor from the housing. The mechanism holds the engagement portion of the monitor at the same height position in a range where the slider extends from the first position to a predetermined intermediate position, and moves the slider from the predetermined intermediate position to the second intermediate position. The range in which the monitor engagement portion is lowered with respect to the slider in a range reaching the position, and the lever tilts the monitor toward the vehicle front side as the monitor engagement portion is lowered. The display device for a vehicle according to the above. 4. The in-vehicle display device according to claim 3, wherein the vertical position changing mechanism is constituted by a cam that engages with the engaging portion of the monitor. 5. Engagement with a monitor housed in the housing,
The in-vehicle display device according to claim 1, further comprising a lock mechanism movable to a lock position for restricting the monitor from projecting from the housing and a lock release position for releasing the restriction. . 6. The on-vehicle display device according to claim 5, wherein the lock mechanism includes a roller engaged with a concave portion formed on an outer surface of the monitor. 7. The apparatus according to claim 1, further comprising an urging means which engages with a part of said monitor and urges said monitor in a direction to accommodate said monitor in said housing. The display device for a vehicle according to the above. 8. The in-vehicle display device according to claim 7, wherein the urging means urges the monitor toward the front of the vehicle and simultaneously urges the monitor toward the upper side of the vehicle.