JP2000035766A - Light emitting display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light emitting display device which urges others to give information by installing a display unit and also permits to secure a field of view to be confirmed on own side at the same time. SOLUTION: This light emitting display device has in one body in a frame 1 including an LED display unit 2 as a light emitting surface and display surface, a half mirror 3 of which the plane facing this led display 2 is used as a light-reflecting plane 3a and the opposite plane is used as a light transmissive plane, and that is installed on a rear board 24 on a sedan and transmits a display on the screen reflected on the light-reflecting plane 3a to the following vehicle as a message, and is arranged so that when a driver checks backwards via a rearview mirror 27, driver can grasp a distance between the cars without obstruction of the view.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light-emitting display device for displaying an image using, for example, a light-emitting diode or the like as a light source, and is suitably used particularly when a message is transmitted from a rear window of an automobile to a following vehicle or the like. The present invention relates to a light emitting display device that can be used.

[0002]

2. Description of the Related Art Passenger vehicles such as sedans and vans, including large vehicles such as trucks and trailers, are equipped with rearview mirrors in front of the windshield inside the vehicle and on the left and right sides of the body for checking the driver's back. . The rearview mirror in the vehicle is mainly used for checking the flow of the following vehicle and the distance between vehicles through the rear window, and the side mirror provided on the body is used for checking the following vehicle when changing lanes.

[0003] By using the rearview mirror, it is possible to drive safely while checking the following vehicle. However, when a sudden interruption occurs during driving, a message is sent to the following vehicle to increase safety. A display device that attempts to do so has been proposed. An example of such a display device is described in Japanese Patent Application Laid-Open No. 5-94138. This means that the display is arranged as a posture facing the display surface capable of displaying images by LEDs or the like at the rear window of the car, and a message required by operation from the driver's seat is displayed on the screen and transmitted to the following car. Things.

FIG. 9 is a schematic side view of a main part showing an example of an arrangement of a display similar to that described in the above-mentioned publication with respect to an automobile. A rear board between a rear seat 52 and a rear window 53 in a vehicle body 51 is shown. An indicator 55 is arranged on 54. As shown in FIG. 1 of the above publication, the display 55 is arranged so that the display surface thereof can be seen through the rear window 53.
For example, a display surface 55a in which a large number of LEDs are arranged as pixels
Facing toward the rear window 53. By providing such a display 55, a message can be transmitted to the following vehicle, so that the driver's intention can be conveyed in the case of suddenly changing lanes, which can be used for safe driving. Further, the present invention can be used not only for general vehicles but also for patrol vehicles for managing traffic patrols and highways, for example, to guide traffic violators.

[0005]

In the case of a sedan in a passenger car, the display surface 55a of the display 55 must be entirely covered with the rear window 5 so that the following vehicle can be easily seen.
It is necessary to face 3. To do this,
The display 55 may be mounted on the rear board 54 as shown in FIG. 9, and the display 55 itself can be easily provided.

However, the rear window 53 is an important field of view for confirming the rear using the rearview mirror in the vehicle.
When the display 55 is installed as shown in the figure, the field of view is obstructed, and the field of view is narrowed to the space A between the boundary between the roof 51 a of the vehicle body 51 and the rear window 53 and the upper end of the display 55. Therefore, it is difficult to confirm the rear view with the rearview mirror in the vehicle, which greatly affects safe driving. Also,
In the case of a van as well as a sedan, there is a similar problem since the display surface cannot be confirmed from a following vehicle unless the indicator is arranged so as to be included in the view of the rear window.

As described above, by providing a display for transmitting a necessary message in the form of an image through the rear window of the automobile, information for preventing an accident or the like can be obtained for a succeeding vehicle, but the rearview by the rearview mirror can be confirmed. Will be spoiled.

Further, in fields other than the field of application to automobiles, the display is installed, so that the field of view is rather narrowed, resulting in inconvenience.

The problem to be solved in the present invention is to provide a light emitting display device which can prompt the provision of information to another person by installing a display device and at the same time can secure a visual field to be confirmed on its own side. .

[0010]

A light-emitting display device according to the present invention comprises a frame including a light-emitting display surface, and a light-reflection surface which is disposed integrally with or separately from the frame and receives light from the light-emitting display surface. And a half mirror having a light transmitting surface on the opposite side.

When a half mirror is integrated with the frame, for example, the half mirror is mounted on a rear board of a sedan-type automobile so that the light transmitting surface of the half mirror faces the driver's seat and the light reflecting surface faces the outside of the rear window. With this arrangement, light emitted from the light-emitting display surface can be reflected by the light-reflecting surface to transmit a message using characters or patterns to a subsequent car or the like.
In addition, since the rear window can be viewed through the rear mirror through the light transmission surface of the half mirror from the driver's seat, the field of view is not obstructed.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to the first aspect of the present invention is directed to a frame including a light emitting display surface, and a surface arranged integrally with or separate from the frame and receiving light from the light emitting display surface as a light reflecting surface. A light-emitting display device comprising a half mirror having a light-transmitting surface on the opposite side, wherein light from the light-emitting display surface is reflected from a light-reflecting surface of the half-mirror to transmit a display. This has the effect that the field of view in the direction in which the display is transmitted can be kept wide even if a mirror is interposed.

A specific example of an embodiment of the present invention will be described below with reference to the drawings. 1A and 1B show details of a light emitting display device of the present invention. FIG. 1A is a plan view of a main part, FIG. 1B is a front view, and FIG. 1C is FIG. FIG.

In FIG. 1, the light-emitting display device comprises an LED display 2 arranged on the upper surface of a frame 1 fixed to a mounting surface, and a number of LEDs incorporated in these LED displays 2.
An image can be displayed using the ED as a pixel. L
The plurality of ED displays 2 are arranged in the longitudinal direction of the frame 1, and characters and designs can be displayed as a whole by controlling the blinking of the LED mounted on each LED display 2. The LED display 2 is provided with a controller or the like for controlling the blinking of the arranged LEDs, as is well known in the art, and displays these based on image signals such as characters and patterns.

At both ends of the frame 1, supports 1a and 1b having a triangular outline are provided, and a half mirror 3 is fixed to the oblique side inclined at 45 ° with respect to the surface of the frame 1. The half mirror 3 has a size enough to cover the entire LED display 2 included in the frame 1 as shown in FIG. 1 (c). The covered surface is a light reflecting surface 3a and the opposite side. Is a light transmitting surface 3b.
That is, when viewed from the direction of the solid line in the figure, the opposite side of the half mirror 3 is seen through without reflection, and the light emitted from the LED display 2 indicated by the dashed line is reflected by the light reflecting surface 3a and Light can be emitted as a virtual image in a direction parallel to the surface.

FIGS. 2A and 2B are schematic views of the light emitting display device, wherein FIG. 2A is a perspective view seen from the light transmitting surface 3b side, and FIG. 2B is a perspective view seen from the light reflecting surface 3a side. It is.

As described above, when viewed in the direction of arrow P in FIG. 2A, the opposite side of the half mirror 3 can be observed through the light transmitting surface 3b. Then, when viewed in the direction of arrow R in FIG. 3B, the image shown on the light reflecting surface 3a, that is, the LED display 2 provided on the frame 1 can be seen. Therefore, LE
When characters and designs are displayed by using the LED of the D display 2 as a pixel, the inverted display can be seen from the direction of arrow R. For example, by controlling the blinking of the LED of the LED display 2 so that each of the characters “to the left” appears as a virtual image on the light reflecting surface 3a as shown in FIG. Is obtained.

FIG. 3 is a schematic view showing an example in which the light emitting display device is mounted on a rear board of a sedan type automobile.

As shown in FIG.
1 and a rear seat 22 are arranged, and the frame 1 of the light emitting display device is mounted on a rear board 24 between the rear seat 22 and the rear window 23 as shown in the conventional example. The length of the frame 1 can be increased to a level substantially equal to the width of the rear window 23, and the display content and color of characters and the like by the LED display 2 are, for example, an operation panel provided on a dashboard 25 in front of the driver's seat 21. 26.

The operation panel 26 is connected to the dashboard 2
5 is connected to the controller of the LED display 2 by a code, and the battery of the automobile may be used as the power source as it is. Further, instead of being provided on the dashboard 25, it may be provided on a console portion, for example, within a reach of a driver or a passenger.

As described above, the light emitting display device is mounted on the rear board 24.
Even if the light transmission surface 3b of the half mirror 3 faces the driver's seat 21 side, when the driver looks at the rearview mirror 27 in the vehicle, the driver can view almost the entire height of the rear window 23 in the height direction. Can be put in. That is, the half mirror 3 is tilted 4 degrees from the frame 1 on the rear board 24.
It stands up at an angle of 5 degrees, but since the light transmitting surface 3b faces the driver's seat side, the half mirror 3 does not obstruct the field of view, and is used to check the rear including the height of H in the figure. Can be included in the field of view. Then, characters and designs caused by the blinking of the LED of the LED display 2 enter the light reflecting surface 3a of the half mirror 3 and are reflected therethrough, pass through the rear window 23, and are displayed rearward. Therefore, the following vehicle can confirm the characters and the like reflected on the light reflecting surface 3a as a message.

FIG. 4 is a schematic diagram showing a more specific configuration of an example of incorporating a light emitting display device into a rear board. In the following example, the components of the vehicle are the same as those in FIG. 3, and the reference numerals are common.

The frame 1 of the light-emitting display device is mounted on a rear board 24 between the rear seat 22 and the rear window 23, and the light transmitting surface 3b faces the driver's seat side and the light reflecting surface as in the example of FIG. The half mirror 3 is fixed with the attitude 3a facing the rear window 23 side. A hood 4 is attached to the upper end of the half mirror 3 so that external light does not hit the light transmitting surface 3b. The hood 4 is for preventing the sunlight radiating from the rear window 23 from directly hitting the light transmitting surface 3b. When the driver looks at the rear-view mirror 27 (see FIG. 3), the hood 4 is turned off.
It is possible to make it easy to check the rear side without being affected by the glare of the sunlight hitting b or the scattered light due to total reflection.

FIG. 5 shows an example of a configuration in which the frame 1 and the half mirror 3 of the light emitting display device shown in FIGS. 1 and 2 are separately mounted on the rear board 24.

The rear board 24 is provided with a hollow sleeve 24a dropped on the back side of the rear seat 22, and the lower end thereof is connected to the frame 1, and the supports 1a and 1b are used as fixing members on the upper surface of the rear board 24. And the half mirror 3 is arranged. The frame 1 is arranged with the LED display 2 included in the upper surface thereof positioned in the sleeve 24a, and the light from the LED display 2 reaches the light reflecting surface 3a of the half mirror 3 and is directed toward the rear window 23. And emits a message to the following car as in the previous example. The half mirror 3 arranged separately from the frame 1 is provided with a hood 4 as in the example of FIG. 4 to make it easier for the driver to check behind.

By arranging the frame 1 and the half mirror 3 as separate bodies and arranging the frame 1 under the rear board 24 in this manner, the frame 1 can be used for checking the rear as compared with the example of FIG. No obstacles. Therefore, the field of view when looking through the rear-view mirror 27 can be further expanded.

FIG. 6 shows a frame 1 of the light-emitting display device shown in FIGS. 1 and 2 and an LED display 2 and a half mirror 3 incorporated therein, which are separate from each other.
In this example, the half mirror 3 is fixed near the upper end of the rear window 23.

A booth 24b for accommodating the frame 1 is provided on the rear board 24.
The upper end of b has a transparent plate 24c. The frame 1 has a rear seat 22 side inclined downward, and the direction of light emission from the LED display 2 included on the front side thereof is directed to the upper end side of the rear window 23.

The half mirror 3 is rotatable in a direction indicated by an arrow in the figure by a hinge 28a provided on a roof 28 at an upper end portion of the rear window 23, and emits light from the LED display 2 as shown in the figure. The attitude can be set so that the received light reflecting surface 3a passes through the rear window 23 and is reflected in a substantially horizontal direction.

In this example, the frame 1 is dropped into the rear board 24 as in the case of the configuration of FIG. 5, so that the field of view can be widened and the light reflecting surface 3a of the half mirror 3 can be widened.
Is located on the upper end side of the rear window 23, so that it can be easily seen from a following vehicle. Since the light transmitting surface 3b of the half mirror 3 is covered by the ceiling in the vehicle, the sunlight does not directly radiate, and it is not necessary to provide a hood as shown in the examples of FIGS.

FIG. 7 is a side view schematically showing an example applied to a van or a wagon car. The light-emitting display device including the frame 1, the LED display 2, and the half mirror 3 shown in FIG. 1 is fixed to the lower surface of the roof 32 on the rear side of the vehicle body 31 in a vertically inverted posture. The frame 1 is located near the rear window 33 and rearward of the rear seat 34, and the light transmitting surface 3b of the half mirror 3 is included in the field of view of a rear-view mirror (not shown) on the driver's seat side.

Also in this example, the light emitted from the LED display 2 is transmitted from the light reflecting surface 3a of the half mirror 3 to the rear window 33.
, And can be displayed on the succeeding vehicle, and the driver himself does not have an obstruction in view using the light transmitting surface 3b. Further, since the light-emitting display device is fixed to the lower surface of the roof 32, the loading platform 36 between the rear seat 34 and the back door 35 is provided.
It does not interfere with the space of the car and does not hinder the loading and unloading of luggage.

Further, the example of FIG. 8 is a schematic view in which the angle and length of the half mirror 3 of the light emitting display device are changed so that the following vehicle clearly transmits the display to a tall truck or bus. It is. The illustrated example is a configuration provided on the rear board 24 of the sedan-type automobile shown in FIG. 4, for example.
The same members are indicated by common symbols.

FIG. 2A shows an example in which the half mirror 3 is provided on the frame 1 by a hinge mechanism 6 so that the half mirror 3 can be turned upside down. A rotation drive unit (not shown) such as a motor is connected to the hinge mechanism 6, and a switch for operating the drive unit is provided on the operation panel 26 shown in FIG. Can be set to a posture shown by a broken line or a solid line in the figure.

When the half mirror 3 is in the position indicated by the broken line, the light emitted from the LED display 2 is reflected in a direction substantially parallel to the road, that is, in the direction indicated by the two-dot chain line in the figure, as in the example of FIG. indicate. When the half mirror 3 is slightly raised as shown by the solid line, the light from the LED display 2 is reflected obliquely upward and reflected in the direction shown by the solid line. Therefore, even if the following vehicle is a truck having a high driver's seat, the display can be easily viewed from the light reflecting surface 3a and transmitted to the driver.

FIG. 3B shows an example in which the display direction can be set obliquely upward by changing the length of the half mirror 3 in the height direction. As shown in a partially enlarged view in FIG.
c, and supports 1a, 1 shown in FIG.
b is slidably connected to b. A drive (not shown) for moving the auxiliary half mirror 3c is provided on the supports 1a and 1b, and this drive is provided on the operation panel 26 in the same manner as the hinge mechanism 6 shown in FIG. Operate to move up and down.

When the auxiliary half mirror 3c does not protrude, it is reflected in the direction of the two-dot chain line similarly to the half mirror 3 in the position shown by the broken line in FIG. When the auxiliary half mirror 3c protrudes as shown in the figure, the upper end portion of the auxiliary half mirror 3c is included as a reflection surface, so that the incident angle from the LED display 2 increases. Therefore, the reflection direction can be set to be obliquely upward as in the case of (a) in the figure, and the message is clearly transmitted to the following vehicles such as trucks and buses.

The half mirror 3 is generally in the form of a flat plate, but the longitudinal section of the light reflecting surface 3a is concave or convex, or the transverse section in the width direction is concave or convex. You can also. Thus, the light reflecting surface 3a
By making the longitudinal section and the transverse section of a concave or convex surface, it is possible to converge the light emitting direction to have directivity,
The image on the display 2 can be enlarged and displayed.

[0039]

According to the light emitting display device of the present invention, the display from the light emitting display surface can be transmitted to the following vehicle from the light reflecting surface of the half mirror by providing the light emitting display device at the rear portion of the vehicle, and at the same time, the field of view from the driver's seat can be improved. It is secured through the light transmission surface of the half mirror. Therefore, the following vehicle can surely receive the message as information, and the driver himself can sufficiently confirm the rearward direction, which is very effective for safe driving and accident prevention.

[Brief description of the drawings]

1A and 1B are details of a light emitting display device according to an embodiment of the present invention, in which FIG. 1A is a plan view excluding a half mirror, FIG. 1B is an overall front view, and FIG. Right side view

FIGS. 2A and 2B are schematic views of the light-emitting display device of FIG. 1, wherein FIG.

FIG. 3 is a schematic view of an example in which a light-emitting display device is mounted on a rear board of a sedan-type automobile.

FIG. 4 is a schematic diagram of a main part of an example in which a light emitting display device in which a hood is connected to an upper end of a half mirror is mounted on a rear board;

FIG. 5 is a schematic diagram of a main part of an example in which a frame and a half mirror of a light emitting display device are separately provided on a rear board;

FIG. 6 is a schematic diagram of a main part of an example in which the frame of the light emitting display device is separated from a half mirror and the frame is arranged in a booth of a rear board and the half mirror is connected near the upper end of a rear window;

FIG. 7 is a schematic view of an example in which a light-emitting display device is provided on a roof of a van or a wagon car.

8A and 8B are schematic views showing a configuration in which the direction of reflection from a half mirror can be changed. FIG. 8A shows an example in which a half mirror is moved up and down by a hinge mechanism. FIG. 8B is a diagram in which an auxiliary half mirror is newly provided. Side view of example of changing length

FIG. 9 is a schematic view of a conventional example.

[Explanation of symbols]

 Reference Signs List 1 frame 1a, 1b support 2 LED display 3 half mirror 3a light reflecting surface 3b light transmitting surface 4 hood 21 driver's seat 22 rear seat 23 rear window 24 rear board 24a sleeve 24b booth 24c transparent plate 25 dashboard 26 operation panel 27 rearview mirror 28 Roof 28a Hinge

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masahide Takenaka 1-1, Yukicho, Takatsuki-shi, Osaka Matsushita Electronics Co., Ltd. (72) Inventor Katsunobu 1-1, Yukicho, Takatsuki-shi, Osaka Matsushita Electronics F term in reference (reference) 5C096 AA01 AA06 BC02 BC20 CA06 CA14 CA22 CA32 CB05 CE07 FA11 5G435 AA01 BB19 GG09 LL17

Claims (1)

[Claims] 1. A half including a frame including a light emitting display surface, a surface arranged integrally with or separate from the frame and receiving light from the light emitting display surface as a light reflecting surface, and a surface opposite to the light transmitting surface. A light-emitting display device comprising a mirror.