JP2000098934A - Led display device for marking vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable obtaining good visibility by providing LED display panels in which plural LED display units are arranged with the desired number of stages and uniting LED display units serially. SOLUTION: A frame of a square and plural LED display units 14 arranged cross wise and fit into the frame are provided on a LED display panel. And each LED display unit 14 is united serially. That is, LED display units being adjacent each other in each stage are connected by a cable 20a. Further, LED display units 14 positioning at a left end or a right end of (n)th stage and (n+1)th stage are connected each other by a cable 20b and LED display units 14 positioning at a left end or a right end of (n+1)th stage and (n+2)th stage are connected each other by a cable 20b. Thereby, one character or graphic can be display over plural LED display units 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention generally relates to an LED display mounted on a sign car. More specifically, the present invention provides
The present invention relates to an LED display device for a sign car equipped with good visibility.

[0002]

2. Description of the Related Art A driver driving information on road construction such as "under construction", "attention of slip", "attention of falling rock", "under snow removal", road traffic, road weather, and road disaster on a general road or an expressway. In order to provide such information, a sign car equipped with a display device for displaying such information is known.
Generally, an LED (light emitting diode) display device is used as a display device mounted on a traffic sign, from the viewpoints of visibility, power consumption, and life. In an LED display device, usually, a plurality of LED display units are arranged vertically and horizontally to form one LED display panel as a whole. In a conventional LED display device, as shown in FIG.
D display units are bound for each stage (hereinafter referred to as "parallel binding").
), And control is performed by connecting to a parallel port of a control device (not shown) of the CPU board die for each stage.

[0003]

SUMMARY OF THE INVENTION However, LEDs
In the display system, in order to increase the display speed, the data must be held in the memory of the control device, and the data must be transferred and controlled in each cycle, so that a single data transfer cannot be performed. , Data must be transferred at each timing. Therefore, the parallel bound L
In the ED display unit, it is necessary to change the memory amount of the control device depending on the number of stages. In addition, since the number of parallel ports of the control device is required as many as the number of stages to be arranged, in view of the current situation that the maximum number of parallel ports provided in a commercially available control device is four, the LED display unit is required. 5
In the case of arranging a plurality of stages, a control device must be specially ordered, and there is a problem that the cost is increased.

[0004] Furthermore, in the LED display units connected in parallel, only one character or figure can be displayed for each unit. That is, as shown in FIG.
The maximum size of the displayed character is limited by the size of the LED display unit, and as shown in FIG.
One character or figure cannot be displayed over the ED display unit. This is because data transfer is performed for each stage, and it is extremely difficult to synchronize each data to be transferred. On the other hand, if the size of the LED display unit itself is increased in order to increase the maximum size of the displayed character or figure, the number of dots (LED elements) of a commercially available LED display unit is defined (for example, 16 ×). (16 dots, 24 × 24 dots), the displayed characters are large, but the intervals between the dots of the LED display unit are sparse and difficult to see. Under the circumstances described above, the size of characters or graphics to be displayed is limited in the parallel-bound LED display unit, so that the LED display unit is mounted on a sign car, particularly on an expressway that requires visibility from a long distance. There is a problem that characters or figures displayed on the LED display device are difficult to see.

Accordingly, an object of the present invention is to provide an LED display device mounted on a sign car that has good visibility and does not require special ordering or modification of the control device.

[0006]

According to a first aspect of the present invention, there is provided an LED display device mounted on a sign car having an LED display panel in which a plurality of LED display units are arranged in a desired number of stages.
The ED display unit is characterized by being serially bound.

An LED for mounting on a sign car according to claim 2 of the present application.
The display device has an LED display panel in which a plurality of LED display units are arranged in a desired number of stages. In each stage, LED display units adjacent to each other are connected by cables, and n stages (n is (Representing an odd number) and the LED display units located at the left or right end of the (n + 1) th stage are connected by a cable, and the LED display units located at the right end or the left end of the (n + 1) th stage and the (n + 2) th stage are connected by a cable. Is what you do.

[0008] The LED mounted on a sign vehicle according to claim 3 of the present application.
The display device according to claim 1 or 2, wherein the display device is an LE device.
It has a personal computer for controlling the D display panel, and an LED display unit located at the last end is connected to a parallel port of the personal computer.

[0009]

Next, an embodiment of the present invention will be described in detail with reference to the drawings. The LED display panel indicated by reference numeral 10 as a whole in FIG. 4 has a square frame 12 and a plurality of LED display panels arranged vertically and horizontally and fitted into the frame 12 (in FIG.
) LED display units 14.

Each LED display unit 14 is shown in FIG.
As shown in FIG. 1, the LED display section 16 has a large number of LED elements 16a arranged on the front surface, and a substrate 18. A terminal 16b is provided on the back of the LED display section 16.
And a socket 18a is provided on the front surface of the substrate 18 at a position corresponding to the terminal 16b of the LED display unit 16. As shown in FIG.
8 by inserting the corresponding terminal 16b of the LED display unit 16 into the socket 18a of the LED display unit 1.
4 are formed. On the back surface of the board 18, two connectors 18b for connection are provided. The above-described configuration itself of the LED display unit 14 is publicly known.

FIG. 3 is a perspective view showing a process of fitting the LED display unit 14 to the frame 12. FIG. 3 shows a state in which three LED display units 14 are fitted.

Each LED display unit 14 is serially bound as shown in FIG. That is, the LED display units 14 adjacent to each other in each stage are connected to each other by the cable 20a, and the LED display units 14 located at the left end or the right end of the n-th stage and the n + 1-th stage are connected to each other by n + 1
The LED display units 14 located at the right end or the left end of the tier and the (n + 2) tier are connected to each other by a cable 20b. Note that n represents an odd number.

The LED display units 14 will be described in more detail with reference to the example shown in FIG. 1 in which the LED display units 14 are arranged in six rows and columns. Connected, and one and two, three and four, five and six
The LED display units 14 located at the left end of the step are connected by a cable 20b, and the LED display units 14 located at the right end of the second step, the third step, the fourth step, and the fifth step are connected by a cable 20c.
Are connected by

As shown in FIG. 4, the connector of the LED display unit 14 at the last end (lower right corner in the example shown in FIG. 1) which is serially bound as described above,
Parallel port 22a of display panel control personal computer 22
Are connected by a dedicated cable 26, and LE
The D display panel control personal computer 22 and the LED display panel operation personal computer 24 are connected by a LAN cable 28.

With the above configuration, the LED display unit 1
4 are serially bound, so that it is easy to synchronize the transfer data, and as shown in FIG.
One character or figure can be displayed over the ED display unit 14. Also, for example, WINDOW
By developing an LED control program corresponding to an OS such as S, it is possible to increase the types of fonts that can be displayed and to display moving images.

FIG. 6 is a view showing an example of a sign car equipped with the LED display device according to the present invention. An LED display panel 10 is mounted at the rear of the sign car. The LED display panel 10 is moved up and down by the elevating device 30 (in the figure, the ascending position is indicated by a dashed line, and the descending position is indicated by a solid line). Lifting device 30
May be of normal hydraulic or electric type. In addition, a rear-end collision prevention device 32 is attached to the rearmost part of the sign car (in the figure, the operation position is indicated by a solid line, and the non-operation position is indicated by a chain line). LE at a designated point on a traffic sign
A D display panel control personal computer 22 and an LED display panel operation personal computer 24 (not shown in FIG. 6) are provided.

The present invention is not limited to the above embodiments of the invention, and various modifications can be made within the scope of the invention described in the claims. It goes without saying that it is included in.

For example, in the above embodiment, the LED display panel 10 is formed by the 6 × 6 LED display units 14, but the LED display units 14 may be arranged in a desired number of steps or in a desired shape. .

[0019]

According to the present invention, since one character or figure can be displayed over a plurality of LED display units, good visibility can be obtained. In addition, since a personal computer can be used as the control device instead of a CPU board type device, there is no need to custom-order or modify the control device, and if a control program compatible with a general-purpose OS is developed, ,
It can be expected to increase the types of fonts that can be displayed and to display moving images.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a method of binding an LED display unit of an LED display device according to the present invention. In addition, in order to clarify the binding method, each LED display unit is illustrated with an interval.

FIG. 2 is a view showing an LED display unit,
(A) is a perspective view showing a state where the LED display unit and the substrate are separated, and (b) is a front view showing a state where the LED display unit and the substrate are connected.

FIG. 3 is a perspective view showing a process of fitting an LED display unit into a frame.

FIG. 4 is an overall conceptual diagram of the LED display device of the present invention.

FIG. 5 is a diagram showing a display example by the LED display device of the present invention.

FIG. 6 is a diagram showing an example of a sign car equipped with the LED display device according to the present invention.

FIG. 7 is a diagram showing a method of binding LED display units of a conventional LED display device. In addition, in order to clarify the binding method, each LED display unit is illustrated with an interval.

FIG. 8 is a diagram showing a display example by a conventional LED display device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 LED display panel 12 Frame 14 LED display unit 16 LED display part 18 Substrate 20a, 20b, 20c Cable 22 LED display panel control personal computer 24 LED display panel operation personal computer

Claims (3)

[Claims] 1. An LED display device mounted on a traffic sign, comprising:
LE in which a plurality of LED display units are arranged in a desired number of stages
An LED display device having a D display panel, wherein the LED display units are serially bound. 2. An LED display device mounted on a traffic sign, comprising:
LE in which a plurality of LED display units are arranged in a desired number of stages
D display panel, and adjacent to each other at each stage
The D display units are connected to each other by a cable, and the LED display units located at the left end or right end of n stages (n represents an odd number) and n + 1 stages are connected by cables, and the right end of the n + 1 stage and n + 2 stages are connected by a cable. Alternatively, the LED display units located at the left end are connected to each other by a cable. 3. The personal computer according to claim 1, further comprising a personal computer for controlling the LED display panel, wherein the LED display unit located at the last end is connected to a parallel port of the personal computer. The LED display device as described in the above.