JPH08328510A - Led display device - Google Patents

Abstract

PURPOSE: To provide an LED display device which facilitates the formation of data for display, allows the change of the specific part of display contents from a place remote from the LED display device without requiring a costly memory device, such as memory, and external input device, and has the excellent preservable property and safety of the display contents. CONSTITUTION: This LED display device has an LED display screen 1 arranged with light emitting diodes, a control section 7 which controls the display data, a driver 6 which controls the flicker of the light emitting diodes of this LED display screen 1, an IR light receiving section 2a which receives the signal inputted from outside and transmits this signal to the control section 7 and a code conversion section 8 which converts the signal received by the IR light receiving section 2a to a prescribed code. The previously specified part among the display contents displayed on the LED display screen 1 is changed in the display contents and is displayed by applying the signal to the IR light receiving section 2a by an IR remote controller 3 from the position apart from the LED display device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an LED display device which displays various information by means of light emitting diodes.

[0002]

2. Description of the Related Art Arranging light emitting diodes in a matrix or providing an LED display screen in which light emitting diodes are arranged at positions corresponding to characters, numbers and symbols to be displayed, and positions corresponding to characters, numbers and symbols are provided. The LED display device that blinks and displays the light emitting diode is used as a means for transmitting various information.

Some of such LED display devices are used for displaying fluctuating information such as price and stock price of a product, and among a plurality of continuously displayed contents. An LED display device or the like having a function of changing and displaying only a portion of information that fluctuates is used.

FIG. 5 is a block diagram showing the structure of a conventional LED display device. When there are multiple display contents to be displayed on the conventional LED display device, a plurality of display data corresponding to them are created, and the plurality of display data are stored in advance in a memory or the like. 22a.

When changing the display contents, the input unit 23 such as an input device connected to the LED display device is operated by a switch installed in the LED display device or a cable for transmission,
Data to be displayed is selected from a plurality of display data stored in advance in the display data storage portion 22a and transferred to the control portion 22.

The control section 22 cancels the display data that has been displayed so far, drives the driver 21 according to the newly transferred display data, and displays the changed display content on the LED display screen 20.

[0007]

A display data storage portion 2 such as a memory for storing a plurality of pieces of display content data to be displayed.
In the conventional LED display device which stores the data in 2a and selects and displays the necessary data from a plurality of data when changing, the contents to be displayed are stored in advance in the display data storage portion 22a. It was limited to things.

Therefore, even when it is desired to change a part of the display contents which are already displayed, the display data which is not changed and the display data which is changed a part is created,
It has been necessary to store and display each display data as separate display data in the display data storage portion 22a.

Therefore, if the display data of all the expected display contents is to be stored, the storage portion 22a for the display data requires a storage device having a large storage capacity, which makes the display data expensive. Also, the work of creating, storing in a storage device, or designating display data for display becomes more complicated as the display content increases.

Further, in an LED display device which designates display data stored by a switch attached to the LED display device, the switching operation of the switch becomes difficult and dangerous when installed in a narrow place or a high place, Since the switch itself installed in the main body of the LED display device can be operated by anyone other than the administrator of the LED display device, there is a problem in saving display contents and safety.

In an LED display device in which an input device is separately provided and connected to the LED display device with a transmission cable, and display data is designated at a position distant from the installed LED display device, the transmission cable must be wired. Since it has to be done, the installation work is troublesome, and the cost is high because an input device is installed separately from the LED display device.

It is an object of the present invention to easily create display data, and to specify a specific portion of display contents from a place remote from the LED display device without requiring an expensive storage device such as a memory or an external input device. It is an object of the present invention to provide an LED display device that can be changed, and is excellent in storage stability and safety of display contents.

[0013]

FIG. 2 shows an LE according to the present invention.
FIG. 3 is a block diagram of the D display device, which includes an infrared light receiving unit 2a that receives an input signal, a code conversion unit 8 that converts the signal received by the infrared light receiving unit 2a into a predetermined code, and a control unit 7 that controls display data. And a driver 6 for controlling blinking of the light emitting diode, and an LED in which the light emitting diode is arranged
It is composed of a display screen 1a and an infrared remote controller 3b which gives a signal to the infrared light receiving portion 2a from a remote position.

The display data 13 corresponding to the display content includes a non-rewritable data area 13a corresponding to a portion where the display content is not changed and rewritable data corresponding to a portion where the content is changed as necessary. And a storage area 7 for display data of the control unit 7
stored in b.

FIG. 3 is a structural diagram of the display data when the rewritable data area 13b is set between the non-rewritable data areas 13a, 13a as an example showing the structure of the display data 13. Display contents corresponding to the respective data are displayed on the LED display screen 1a in the order of display data 1 to display data n, change data 1 to change data n, display data n to display data n + m.

Apart from the example shown in FIG. 3, it is also possible to set the rewritable data area 13b at the beginning or the end of the display data 13.

FIG. 4 shows a typical example of a signal format used for communication means between the main body 4 of the LED display device and the infrared remote controller 3b when the display contents are changed by operating the infrared remote controller 3b. is there.

A method for changing the display contents currently displayed on the LED display device 1a will be described. As in the case of the transmission start signal format 14, the reader 15a indicating the start of transmission from the infrared remote controller 3b.
And infrared remote controller and LED for other equipment
A transmission start code 15 including a custom code 15b for discriminating the infrared remote controller 3b for the display device, a rewriting start code 16 for starting the change of the display content, and a trailer 19 for indicating the end of the transmission.
In this order, infrared signals corresponding to the respective codes are transmitted.

Next, as in the example of the signal format 14a for change designation, the transmission start code 15 from the infrared remote controller 3b, the designation code 17 for designating the data to be written in the rewritable data area 13b, and the trailer 19 in this order. The infrared signal corresponding to each code is transmitted.

Next, as shown in the example of the transmission end signal format 14b, the transmission start code 15 from the infrared remote controller 3b, the rewriting end code 18 for ending the change of the display content, and the trailer 19 are sequentially assigned to the respective codes. Transmit the corresponding infrared signal.

The infrared signal corresponding to each transmitted signal format is received by the infrared light receiving section 2a of the LED display device, transferred to the code converting section 8 and returned to each signal format again, and each of the signal formats is constituted. Is input to the control portion 7a of the control unit 7.

When the rewriting start code 16 is input to the control portion 7a, the rewritable data area 13b of the display data 13 stored in the display data storage portion 7b.
Then, data corresponding to the next designated code 17 is sent to rewrite the rewritable data area 13b.

Next, when the rewriting end code 18 is input, the rewriting of the display data 13 is completed, and the control unit 7 drives the driver 8 according to the rewritten display data 13 to display the newly changed display contents on the LED. Display screen 1a
Is displayed in.

[0024]

1 is an LED display device for displaying the price of a product according to the present invention, which is a main body 4 of the LED display device.
The LED display screen 1 in which the light emitting diodes are arranged in a matrix is arranged on the front surface of the vehicle, and the driver 6, the control unit 7, the code conversion unit 8 and the like are arranged inside the main body 4 of the LED display device, and the pillars 5 are used for building. Etc. are installed in various places.

On the LED display screen 1, the price of the product is continuously displayed by blinking the light emitting diode together with the guide of the product. When the price fluctuates, the infrared remote control is performed from a position away from the LED display device. Controller 3
Is operated to transmit a signal toward the infrared light receiving section 2 arranged on the side surface of the main body 4 of the LED display device,
Only the part corresponding to the price of the product in the series of displayed contents is changed and displayed.

The display data storage portion 7b of the control unit 7 stores, as the display data 13, information about the product including the price of the product, and the display data 13 is rewritable data corresponding to the portion for displaying the price. The area 13b is distinguished from the non-rewritable data area 13a corresponding to the portion of the display content that does not need to be changed.

In this embodiment, data corresponding to a product name is stored in the display data 1 to display data n of the non-rewritable data area 13a, and the rewritable data area 13b is stored.
Change data 1 to change data n are areas for writing data corresponding to price numbers, and display data n + 1 to display data n + m in the non-rewritable data area 13a store data corresponding to "yen" indicating currency. did.

In the control section 7, the ROM of a commercially available character generator is used in order to convert the display data 13 into data for driving the driver 6 to display specific characters and numbers on the LED display screen 1a. (Fujitsu Limited MB834200A-20) is used for conversion.

The infrared remote controller 3b sets an instruction code 17 corresponding to numerical data of 1 to 9 and 0 in the code conversion unit 10 and sets the key switches of 1 to 9 and 0 set from the key switch 3a. The infrared signal corresponding to the instruction code 17 corresponding to 1 to 9 and 0 is transmitted by inputting from.

When changing the display contents, the key switch 3a which is the input unit 9 of the infrared remote controller 3b is used.
From the code conversion unit 10 of the infrared remote controller, the reader 15a for determining the start of transmission, the infrared remote controller for other equipment, and the infrared remote of the LED display device are input from the code conversion unit 10 of the infrared remote controller. A transmission start code 15 including a custom code 15b for discriminating the controller, and a rewriting start code 1 for starting the change of the display content
6. In the order of the trailer 19 indicating the end of transmission, signals corresponding to the respective signals are sent to the driver 11 of the infrared remote controller, and the infrared light emitting unit 12 outputs infrared signals corresponding to these signals to the infrared light receiving unit of the LED display device main body. 2a.

Infrared receiver 2 of the main body 4 of the LED display device
The infrared signal received by a is transferred to the code conversion unit 8 and returned to each signal format again, and each code is input to the control unit 7a of the control unit 7.

When the rewriting start code 16 is input to the control portion 7a, the rewritable data area 13b of the display data 13 stored in the display data storage portion 7b is stored.
However, the data is rewritable.

In the same manner, from the infrared remote controller 3b, the transmission start code 15, the designated code 17 corresponding to the new price numbers 1 to 9 and 0 according to the change setting signal format 14a, the designated code 17 corresponding to 0, and the trailer 19 are displayed. The signal is sent to the control portion 7a of the control unit 7.

When the designation code 17 is sent to the control section 7a, data corresponding to the numbers 1 to 9 and 0 corresponding to the designation code 17 are sent to the display data 13 and the change data of the rewritable data area 13b is sent. 1 to change data n are rewritten.

In the same manner, the infrared remote controller 3b sends the signals of the transmission start code 15, the rewriting end code 18 and the trailer 19 to the control section 7a of the control section 7 in accordance with the transmission end signal format 14b.

When the rewriting end code 18 is sent to the control portion 7a, the control portion 7 changes the display data 1 to the display data n corresponding to the product name according to the rewritten display data 13 and the change corresponding to the newly changed price number. Data 1 to change data n, display data n + equivalent to "yen" indicating currency
The driver 8 is driven in the order of 1 to display data n + m, and the display content including the newly changed price is displayed on the LED display screen 1
It is displayed in a.

[0037]

As described above, according to the LED display device of the present invention, it is easy to create display data, does not require a large-capacity memory, etc., and is easy to operate from a place away from the LED display device. In addition, the display contents can be changed safely, and by using an infrared remote controller that is inexpensive and easy for the administrator to store, there is no need for expensive external input devices, etc. It is also excellent in sex.

[Brief description of drawings]

FIG. 1 is a perspective view of an LED display device for displaying a price of goods according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of the LED display device.

FIG. 3 shows an example of a structure of display data 13 in the LED display device.

FIG. 4 shows an example of a signal format in the LED display device.

FIG. 5 is a block diagram showing a configuration of a conventional LED display device.

[Explanation of symbols]

 1 LED Display Screen 2 Infrared Receiver 3 Infrared Remote Controller 4 LED Display Main Unit 5 Support 6 Driver 7 Controller 8 Code Converter

Claims (2)

[Claims] 1. An LED display screen 1 in which light emitting diodes are arranged, a control unit 7 for controlling display data, and a driver 6 for controlling blinking of the light emitting diodes of the LED display screen 1.
LE including an infrared light receiving portion 2a that receives a signal input from the outside and transmits it to the control portion 7, and a code converting portion 8 that converts the signal received by the infrared light receiving portion 2a into a predetermined code.
In the D display device, by giving a signal to the infrared light receiving portion 2a by the infrared remote controller 3 from a position distant from the LED display device, a display is performed on a predetermined portion of the display content displayed on the LED display screen 1. LE characterized by changing contents and displaying
D display device. 2. Non-rewritable data in which display data stored in advance is not rewritable as display data 13 such as characters, numbers, symbols, or words or sentences combining them, which are displayed on the LED display screen 1. An area 13a and a rewritable data area 13b in which previously stored display data can be rewritten to other display data are set, and the rewritable data area 13b is separated according to a signal sent from the infrared remote controller 3. 2. The LED display device according to claim 1, wherein a portion corresponding to the rewritable data area 13b of the display content displayed on the LED display screen is changed and displayed by rewriting the display data.