RU2411590C2 - Portable light-emitting diode screen - Google Patents

Abstract

FIELD: physics.

SUBSTANCE: device for creating large-format images on stadium stands and crowded places. The device has several modules which form an image fragment in space which corresponds to its location. Each module can be folded with possibility of transportation in folded state by one person or more. The module has connecting plates to which are attached lines with light-emitting diodes which are configured to be attached to and be detached from the lines. The power supply for the light-emitting diodes and the electronics unit include a microcontroller which transmits control signals in accordance with the image fragment.

EFFECT: easy transportation and assembling of modules of the device for creating large-format images.

Description

Technical field

The present invention relates to the formation of fixed and time-varying large-format images in the stands of stadiums, rallies, demonstrations and other places of mass crowds. The invention can be used as an alternative to posters, banners, banners.

The prior art.

Currently, street LED screens are known, which are capital expensive buildings. Portable LED screens are also known. The most famous among them is the LED screen at the stadium, with which spectators are informed about the replacement of players. However, the area of this screen is relatively small and limited by the size of the device, which can be lifted by one person. These funds can be replenished with another that eliminates this drawback.

SUMMARY OF THE INVENTION

The essence of the invention lies in the fact that the screen is a device containing N LED modules. Each LED module contains a matrix of LEDs, means for controlling the brightness of the LEDs, means for storing information about the displayed image (module memory) and an autonomous power source. The LED module is adapted for transportation by one or more people and can be located in a given area of space next to other similar modules. Moreover, each module shows that image fragment, which is determined by the location of this module relative to other modules. Thus, all modules form a complete image.

List of drawings

Figure 1 shows a well-known screen consisting of the same elementary modules for forming a large format image.

Figure 2 shows the design of the LED module, consisting of several lines of LEDs.

Figure 3 shows the structure of the LED module.

Figure 4 presents the structure of the LED module with a driver.

Figure 5 presents the structure of the LED module with a master device and a radio receiver.

Information confirming the possibility of carrying out the invention.

Known devices for forming large-format images using several elementary devices, each of which forms a fragment of the image. For example, there are known screens consisting of a matrix of 16 TVs arranged in 4 rows of 4 TVs in a row (Figure 1). Each TV is a separate module 1, which shows 1/16 of the image corresponding to its location in the matrix.

A similar technique is also used in street LED screens, which are composed of the same modules. Each module shows a fragment of the image corresponding to the location of this module on the screen. Since the location of the modules is fixed in space, the signals from the control device to the modules are transmitted and the modules are powered by wires.

For portable screens, such modules have the following specifics:

1) the modules are not interconnected by wires;

2) the modules have autonomous control or are controlled via wireless communication lines;

3) for the convenience of transportation, the modules are collapsible and are brought into working condition at the destination (like other collapsible devices, for example, kayaks);

4) usually one or more people are associated with each module;

5) the modules are made with the possibility for a person to observe the surrounding space through them. Such an opportunity is useful for spectators at stadiums, participants in rallies and demonstrations, since along with showing the image, it remains possible to continue to observe events through the modules.

The design of the LED module is shown in Fig.2. Here, the LEDs 2 form an array of LEDs, in which the LEDs are attached to the line of LEDs 3, which, in turn, are interconnected by means of connecting bars 4. The space between the LED lines is free, so that the viewer can observe the world around him through the module. In addition, the module contains an electronics unit 5 and a power supply 6 for LEDs 2 and an electronics unit 5. For ease of transport to the destination, the module is collapsible. The connecting strips 4 are made with the ability to disconnect from the lines of LEDs 3, and the electronics unit 5 and the power supply 6 are configured to disconnect from the connecting strips 4.

Consider a special case of how the image is formed using a portable light screen on the stands of the stadium. Spectators bring modules with them and sit on the podium in the first row of J spectators in each row. At the same time, the viewer takes the place that corresponds to the fragment of the image to which its module has been programmed. After that, according to some predetermined signal, each viewer turns on the module, and a sequence of predefined images is formed on the platform. The dimensions of the module are selected so that the length and width of the module are equal to the distance between adjacent places in a row and the distance between adjacent rows, respectively.

The electronics assembly 5 has the structure shown in FIG. 3. The microcontroller 7, in accordance with the fragment of the image that it should show, gives the corresponding control signals to the LED drivers 8, which convert the control signals from the microcontroller into control signals whose parameters (voltage and power) correspond to the requirements of the LEDs 2. Modern microcontrollers are characterized by low power consumption, high speed, relatively low cost and high reliability parameters. They have a non-volatile flash memory, which can store information on the laws of modulation of LEDs in time, corresponding to many different images being formed. Since the clock frequency of the microprocessor of each module is set from a stabilized crystal oscillator, the change in the displayed images occurs almost synchronously during the operation of the screen.

The LED module can be equipped with additional tools that increase its functionality.

Firstly, the LED module can be equipped with a driver 9 (Figure 4), with which the viewer can set the number of the displayed image. By a common command, all viewers dial the corresponding number, and the desired image is displayed on the screen. The microcontroller 7 has the ability to read information entered in the host unit 10.

Secondly, with the help of the setting device 9, the viewer can set his location in the form of the number of row i, where he is, and the number of place j in the row.

The microcontroller of the module by these integers determines the number of the fragment that it should show. In this case, the viewer can occupy any place within the area on which the image is formed.

Thirdly, the LED screen may comprise a central control device 11 (FIG. 5). Here, the radio receiver 10 available in each module receives signals via a wireless communication line from a transmitter controlled by the central control unit 11 and transmits them to the microcontroller 7. The receiver and transmitter used in mobile phones can be used as a receiver and transmitter. In this case, any commands can be sent from the central control device to the microcontrollers of all modules, provided that the microcontrollers are programmed to receive and execute these commands. For example, from the central control device, new information about displaying new images may be recorded in microcontrollers. In the extreme case, dynamic images can be formed using the central control device, as is the case in street light screens.

In order to increase the versatility of the module, the module can be configured to change the length and width of the LED array.

The present invention can be successfully used by advertisers. It is known that at present many sports are broadcast on television to multimillion-dollar audiences. Advertisers can “ask” viewers on the podium to form the desired image. These images will be seen by millions of viewers watching the sport.

Claims (2)

1. A device for generating large-format images in the stands of stadiums and in places of mass crowds, containing several modules placed in space in such a way that each module forms a fragment of the image in space corresponding to its location, characterized in that the module is collapsible, with the possibility for transportation in a collapsible form by one person or several people, the module contains connecting strips to which the rulers with LEDs are mounted, which are made with possibility of attaching and detaching of the lines, the power supply and LED electronics assembly comprising a microcontroller, the supply control signals in accordance with the image fragment. 2. The device according to claim 1, characterized in that the module electronics module comprises a control device transmitting information about the displayed image fragment via wireless communication lines.

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