JP2002002373A - Display device for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device for and automobile capable of always exhibiting the derricking function regardless of an inclination of read glass of the automobile. SOLUTION: This device is transversely placed on a base C between a rear seat A of the automobile and the rear glass B, and has a display panel 1 laterally formed in the long size, and since the display panel 1 is raised up and brought down along the rear seat A of the automobile in the right-angled direction to the long size direction, the derricking function can be always exhibited regardless of the inclination of the rear glass of the automobile.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device for a vehicle in which a display panel is placed horizontally on a base between a rear seat and a rear glass of the vehicle.

[0002]

2. Description of the Related Art FIG. 5 is a view of a conventional automobile display device as viewed from the rear of the vehicle, and FIG. 6 is a side view of the automobile display device of FIG. Conventionally, as shown in FIG. 5, for example, a display panel 1a is installed on a base C between a rear seat A of a patrol car and a rear glass B, and this display panel 1a causes danger or caution to a car or a person coming from behind the vehicle. There are various known devices that transmit various types of information. These display panels 1a are of a fixed type or are raised and lowered in the direction of the rear glass B as shown in FIG.

[0003]

However, in the case of a fixed display panel, there is a problem in that the view behind the automobile is obstructed, and in particular, the view when the vehicle is backed up cannot be secured.
On the other hand, even when the display panel 1a is raised and lowered, there is a problem that the rear glass B and the display panel 1 interfere with each other in an automobile in which the rear glass B is inclined at a steep angle as shown in FIG.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a display device for a vehicle which can always exhibit an undulating function regardless of the inclination angle of a rear glass of the vehicle.

[0005]

According to the first aspect of the present invention,
A display device for a vehicle, which is provided laterally on a base between a rear seat of a vehicle and a rear glass and includes a display panel formed to be long on the left and right, wherein the display panel is provided in a direction perpendicular to the long direction and The vehicle further comprises an undulating means for undulating along a rear seat of the automobile.

[0006] Since the display panel is raised and lowered by the undulating means in the direction perpendicular to the longitudinal direction and along the rear seat of the automobile, interference with the rear glass when the display panel is raised and lowered is eliminated. As a result, regardless of the angle of inclination of the rear glass of the car, when the display panel is used, the panel is raised and information is transmitted to the rear, while when the display panel is not used, the panel is prone on the base and the rear view The undulating function of ensuring sufficient is always exerted.

[0007] For example, the undulating means is attached to one of parallel axes extending left and right of the display panel and is driven by a motor, and is attached to the other of the parallel axes. A roller, a guide gear that stands on the left and right sides of the display panel on the base and guides the rotating gear in an arc shape in the front-rear direction, and a guide portion that guides the roller in an arc shape coaxial with the guide gear. The above-mentioned undulating operation is ensured with a simple configuration.

Further, if the guide gear is formed of a toothed belt, the guide gear can be easily formed.

Further, the driving motor for the rotary gear is a pulse motor, and the erecting operation of the display panel is performed based on the count number of the motor driving pulse signal from the start of the operation. If the motor is stopped by setting the number of pulses in advance, the motor stops at the position where the set value is counted up.
The rising operation of the display panel is reliably stopped.

Further, if the prone operation of the display panel is stopped based on a detection signal of a limit switch disposed at a predetermined position on the base, the display panel is stopped. The prone operation of the display panel is reliably stopped at a position where the display panel contacts the limit switch.

Further, if the display panel has a light emitting diode capable of displaying a plurality of characters on the left and right as in the invention according to claim 6, sufficient information can be transmitted to the rear. You.

[0012]

FIG. 1 is a view showing the overall configuration of a display device for a vehicle according to an embodiment of the present invention when the display panel is standing up, (a) is a top view, and (b) is a front view. ,
(C) is a side view, and (d) is an operation explanatory view.

As shown in FIGS. 1 (a) to 1 (c), the present display device includes a display panel 1 having a long length on the left and right, and a support 2 for supporting the display panel 1 up and down. It is arranged in a narrow space formed by the rear seat A of the automobile, the rear glass B and the base C. For this reason, the undulating path of the display panel 1 is limited to the narrow space as shown in FIG.

The display panel 1 has a plurality of light emitting diodes arranged on a panel surface 11 and displays predetermined character information by turning on / off the light emitting diodes. In the example shown in the figure, seven characters "stop left" are displayed at the same time. However, any one of preset character information can be selectively displayed by operating a button described later. It also has a flicker display function.

The support table 2 supports the display panel 1 on the base C and regulates the undulating operation. The support 2 sandwiches the display panel 1 from both the left and right sides. When the display panel 1 is stored, the display panel 1 is held substantially horizontally on the upper surface of the base C.
When the panel is displayed, the panel is approximately 8
It is held at an inclination angle of 5 degrees. The reason why the inclination angle is set to approximately 85 degrees is to take into consideration the eyes of the driver and the pedestrian behind the vehicle.

FIG. 2 is an exploded perspective view showing the detailed structure of the present apparatus. 14 is fixed by screws or the like, and one rotating shaft 15 penetrating through the left and right flange portions 12 and 13 of the frame body 14.
Are supported by the left and right flange portions 12 and 13.
Further, cantilevered shafts 16 and 17 parallel to the rotating shaft 15 project symmetrically from the left and right flange portions 12 and 13. The shafts 16 and 17 may be one like the rotating shaft 15.

The support base 2 is formed symmetrically and has two support members 21 and 22 both arranged in the front and rear direction (Y direction in the figure). The support members 21 and 22
Is made of an aluminum plate having a predetermined thickness and having arc-shaped notches 21b and 22b in the center on the upper surface side, and is fixed with screws (not shown) inserted from the back surface of the base C. In addition, the support members 21 and 22 have the outer sides in the left-right direction substantially half the thickness of the arc-shaped switching parts 21b,
It is scraped off in the form of an arc coaxial with 22b and is paragraphed to a predetermined depth. Elongated holes (guide portions) 21c, 22c cut out in an arc shape coaxial with the arc-shaped notch portions 21b, 22b are formed in the upper portions of the sectioned portions 21a, 22a.

The right end of the rotary shaft 15 is inserted through a long hole 22c and is connected to the drive shaft of the motor 4 via a drive gear (rotary gear) 41 made of aluminum. A guide gear 222a is formed by cutting and attaching a rubber-made toothed belt (for example, a V-belt) at an appropriate length to the sectioned section 22a, and the driving gear 41 is attached to the guide gear 222a. Are configured to mesh with each other. The motor 4 is, for example, a pulse motor.

The left end of the rotary shaft 15 is inserted through a long hole 21c and connected to a drive gear 43 made of aluminum. A guide gear 221a is formed by cutting and affixing a rubber-made toothed belt (for example, a V-belt) at an appropriate length to the section 21a where the section has been set, and the driving gear 43 is attached to the guide gear 221a. Are configured to mesh with each other.

One end of each of L-shaped members 44 and 45 is fixed to the right flange portion 13 of the frame 14 and the motor 4 by screws or the like, and the other end of both members 44 and 45 is supported by the support member 22. Are connected by screws or the like above the arc-shaped notch portion 22b, and can be moved without interfering with the notch portion 22b. With this configuration, the drive gear 41 of the motor 4 is rotatably supported by the frame 14 and moves together with the display panel 1.

The shaft 17 supports an aluminum roller 47 rotatably fitted in the elongated hole 22c. The shaft 16 supports an aluminum roller 46 rotatably fitted in the elongated hole 21c. Rollers 46, 47
And the clearance between the long holes 21c and 22c are as small as possible without interfering with the rolling operation. The rollers 46 and 47 may be integral with the shafts 16 and 17.

The driving gears 41 and 43 are provided with a guide gear 222.
When the rollers 46 and 47 are fitted into the elongated holes 21c and 22c at the same time as meshing with the a and 221a, the display panel 1 is always supported at four points, and the positioning thereof is performed reliably. The rollers 46, 47 and the slots 21c, 22
The reason why the clearance with c is made small is to prevent the display panel 1 from vibrating or jumping. The reason why the rubber guide gears 222a and 221a are used is to absorb the relative distortion between the above-mentioned four-point support and to make the up / down operation of the display panel 1 smooth and quiet.

The protective cover 5 is disposed on the base C and covers the support members 21 and 22, the motor 4 and the like.
A limit switch 51 is provided near the rear center just above the base. The limit switch 51 is set so that when the display panel 1 is stored with the display panel 1 lying down, the back surface of the limit switch 51 comes into contact and turns on, and at other times, it turns off. As the limit switch 51, for example, a contact type sensor such as a micro switch can be used, and a non-contact type sensor such as a photo interrupter can also be used.

FIG. 3 is a block diagram functionally showing a control system of the present apparatus, and FIG. 4 is a front view of the controller in FIG. 3. For example, a controller 101 installed in a passenger seat of an automobile has a power switch 102 , A plurality of select buttons 103, a cancel button 104, and a confirm button 10
5, a memory 106, a pulse counter unit 107, a detection determination unit 108, and a display control unit 109. The cancel button 104 and the confirmation button 105
In the present embodiment, the selection button 103 is provided separately, but the selection button 103 may be used for both.

In this embodiment, the memory 106 stores a plurality of display patterns (the above-mentioned character string of "stop left", etc.) in advance. The selection button 103 is used for the memory 1
06 for selecting one pattern from the display patterns stored in the
Is for canceling the selection made by the selection button 103, and the confirmation button 105 is for instructing that the driver or the like has confirmed the selection made earlier.

The pulse counter unit 107 determines whether or not the pulse signal for driving the motor 4 has reached a preset count number. The detection determination unit 108 issues a detection signal from the limit switch 51. This is to determine whether or not it has been done. The display control unit 109 controls the display mode of the panel surface 11 of the display panel 1, and
It is also possible to control so as to exhibit the scroll display function and the flicker display function described above. The pulse counter unit 107, the detection determination unit 108, and the display control unit 109 are embodied by, for example, an execution program built in a CPU (not shown).

The controller 101 is electrically connected to the liquid crystal monitor 110, the limit switch 51, the display panel 1, and the driver 111. LCD monitor 1
Reference numeral 10 is for the driver of the automobile to confirm the above-mentioned selection contents before displaying on the display panel 1, and the driver 111 is further connected to the motor 4 to generate a driving pulse signal. is there.

Further, the controller 101 is connected to a DC power supply 112 of an automobile, and supplies electric power necessary for display of the display panel 1 and undulating operation.

With the above configuration, the present device performs the following operation. First, a standing operation of the display panel 1 will be described. At this time, the driver of the vehicle turns on the power switch 102 of the controller 101 and presses the selection button 103 to select the display content on the display panel 1. The selection result is displayed on the monitor 110 under the control of the display control unit 109. When the driver or the like wants to change the display, the driver presses the cancel button 104, presses the selection button 103 again, and confirms on the monitor 110. When the content displayed on the monitor 110 is sufficient, the confirmation button 105 is pressed to start the display on the display panel 1.

By this starting operation, a driving pulse signal is generated by the driver 111, and when the motor 4 is driven by this signal, the driving gears 41 and 43 move the guide gear 22.
Roll on 2a and 221a. By this operation, the display panel 1 stands up along the rear seat as shown by the arrow direction in FIG. 1D. When the motor 4 rotates by the preset number of pulses, the motor 4 is automatically stopped according to the judgment of the pulse counter unit 107, so that the movement of the display panel 1 also stops at that position. After a while, the display panel 1
Displays the selected display content under the control of the display control unit 109.

Next, the storing operation of the display panel 1 will be described. At this time, the driver of the automobile or the like presses the selection button 103 of the controller 101 to instruct the storage operation of the display panel 1. In response to the instruction, the display on the display panel 1 is erased under the control of the display control unit 109, and the storing operation is started. With this start operation, the driver 1
When a driving pulse signal is generated by 11 and the motor 4 is driven by this signal, the driving gears 41 and 43 roll on the guide gears 222a and 221a in the opposite direction.
With this operation, the display panel 1 is prone along the rear seat in the direction opposite to the direction of the arrow in FIG. 1D.

When the limit switch 51 comes into contact with the back surface of the display panel 1 and is turned on, the detection judging section 108 automatically stops the motor 4, so that the movement of the display panel 1 also stops at that position (storage position). . Thereafter, when the power switch 102 is turned off, the entire operation ends.

As described above, in the present embodiment, the display panel 1 is raised and lowered along the rear seat A of the vehicle by the raising and lowering means, so that interference with the rear glass B when the display panel 1 is raised and lowered is eliminated. As a result, when the display panel 1 stands up, information is transmitted backward from the display panel 1, while when lying down, the rear view is sufficiently secured.

In the above-described embodiment, the undulating means is a rotating shaft 1 which is one of parallel axes extending left and right of the display panel 1.
Drive gears 41 and 43 attached to the motor 5 and driven by a motor
And rollers 46 and 47 attached to shafts 16 and 17 which are the other of the parallel shafts, and guide the drive gears 41 and 43 erected on the left and right sides of the display panel 1 on the base C in an arc shape in the front-rear direction. Guide gears 221c and 222c, and the rollers 4 are coaxial with the guide gears 221c and 222c.
The motor 4 moves together with the display panel 1. On the contrary, the guide gears 221 a and 222 a are fixed to the display panel 1, and the guide gear 221 a , 222a may be rotatably driven by a motor 4 fixed on a base C.

In the above embodiment, the motor 4 is a pulse motor, and the erecting operation of the display panel 1 is stopped based on the count number of the pulse signal for driving the motor from the start of the operation. Is to be stopped based on the detection signal of the limit switch 51 installed at the predetermined position, but the stopping operation may be performed based on the number of pulses in any of the ups and downs. Alternatively, instead of the pulse motor, another type of motor, for example, a DC motor may be used, and the motor may be stopped using the detection signal of the limit switch at the time of standing up. Further, instead of the motor 4, similar driving may be performed by a combination of an electromagnetic valve and a pneumatic or hydraulic cylinder. Alternatively, the undulating means may be configured using a link mechanism.

In the above embodiment, the display content of the display panel 1 is selected from one of the display patterns stored in the memory 106 in advance. You may make it input. Also, the display content is not limited to seven characters in the horizontal direction,
It may be 1 to 6 characters or 8 or more characters. Further, symbols or patterns other than characters may be used.

In the above embodiment, the case where the present apparatus is mounted on a patrol car has been described. However, the scope of the present invention is not limited to this, and it goes without saying that the present invention may be mounted on other construction vehicles. is there. Further, in the future, it may be applied to advertisement display.

[0038]

According to the first aspect of the present invention, when the display panel is raised and lowered, interference with the rear glass can be eliminated. As a result, regardless of the angle of inclination of the rear glass of the car, information can be transmitted backward from the display panel when the display panel is standing up, but it always exerts the up-and-down function of securing sufficient rear visibility when lying down. it can.

According to the second aspect of the present invention, the undulating operation can be secured with a simple configuration.

According to the third aspect of the present invention, the guide gear can be easily formed.

According to the fourth aspect of the present invention, the upright operation of the display panel can be reliably stopped.

According to the fifth aspect of the present invention, the prone operation of the display panel can be reliably stopped.

According to the sixth aspect of the invention, it is possible to perform sufficient information transmission to the rear.

[Brief description of the drawings]

FIGS. 1A and 1B are diagrams illustrating an entire configuration of a display device for an automobile according to an embodiment of the present invention when a display panel is standing, where FIG. 1A is a top view, FIG. 1B is a front view, and FIG. FIG. 4D is an operation explanatory diagram.

FIG. 2 is an exploded perspective view showing a detailed configuration of the present apparatus.

FIG. 3 is a block diagram functionally showing a control system of the apparatus.

FIG. 4 is an external view of the controller in FIG. 1;

FIG. 5 is a view of a conventional automobile display device viewed from the rear of the vehicle.

6 is a side view of the vehicle display device of FIG.

[Explanation of symbols]

 Reference Signs List A rear seat B rear glass C base 1 display panel 2 support base 4 motor (up / down means) 15 rotating shaft (up / down means) 16, 17 axis (up / down means) 21, 22 support member (up / down means) 21c, 22c long hole (guide) Parts, undulating means) 41, 43 Drive gear (rotary gear, undulating means) 46, 47 Roller (undulating means) 51 Limit switch 221a, 222a Guide gear (undulating means)

Claims (6)

[Claims] 1. A display device for a vehicle, comprising: a display panel laterally provided on a base between a rear seat of the vehicle and a rear glass, and having a display panel formed to be long on the left and right. A display means for raising and lowering the vehicle at right angles to the rear seat of the vehicle. 2. The display device according to claim 1, wherein the undulating means is a motor driven rotary gear mounted on one of parallel axes extending left and right of the display panel, a roller mounted on the other of the parallel axes, and a display panel on the base. 2. The apparatus according to claim 1, further comprising: a guide gear erected on the right and left sides of the guide gear to guide the rotary gear in an arc shape in the front-rear direction, and a guide portion for guiding the roller in an arc shape coaxial with the guide gear. Automotive display device. 3. The display device for an automobile according to claim 2, wherein the guide gear comprises a toothed belt. 4. The motor for driving the rotary gear is a pulse motor, and the erecting operation of the display panel is stopped based on a count number of a motor driving pulse signal from the start of the operation. 4. The vehicle display device according to 2 or 3. 5. The vehicle display device according to claim 4, wherein the prone operation of the display panel is stopped based on a detection signal of a limit switch disposed at a predetermined position on the base. 6. The display device according to claim 1, wherein the display panel includes a light emitting diode capable of displaying a plurality of characters on the left and right.