JP2002278482A - Screen display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform reciprocating force transmission for mechanical sweep and power supply for picture display without contact, in the picture display using the mechanical sweep either in the horizontal or the vertical direction. SOLUTION: Power supply to a column-like display with display elements arranged in a row is performed without contact from a solar battery mounted on this rear face, and also the reciprocating motion of this column-like display is performed with magnetic force without contact.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for supplying power to a screen display device using mechanical sweeping for horizontal scanning or vertical scanning and for sweeping.

[0002]

2. Description of the Related Art A display device for displaying a screen by performing an electronic sweep in the vertical direction and mechanically reciprocating in the horizontal direction to display a screen on a row-shaped element device in which LEDs are arranged in one to several rows is, for example, a clock. This is only seen in small and limited character displays such as a display of a message or a hand-held message display device, and is not used in a general screen display device such as a television screen display.

An advantage of such a display device using mechanical sweeping in part is that the number of display elements can be reduced, but the display elements must always reciprocate. However, there is a disadvantage that the display element cannot withstand permanent use due to deterioration such as abrasion when the exercise is applied to the display element.

Further, power is generally supplied to a display element which is performing a mechanical movement through a sliding contact. However, even in this sliding contact, power is supplied by physical contact. There was a drawback that wear was so great that it could not withstand permanent use.

Due to these drawbacks, mechanical scanning has been used only for small-scale auxiliary display devices and the like.

[0006]

The present invention realizes power supply to a reciprocating columnar display element without using a sliding contact. The application is performed in a non-contact manner by reciprocating force transmission by magnetic force. These can solve the above-mentioned drawbacks.

[0007] Since power is supplied from a fixed power supply to a reciprocating columnar display element, a sliding contact is required. Therefore, a power generation source exists on the same housing as the display element. If the display element and the power generation source are reciprocated while supplying power while being wired, the power supply by the sliding contact is unnecessary.

[0008]

Means for Solving the Problems In the present invention, an electric power generating element or a coil, which is a power generating source, is moved together with an array display element and reciprocated while generating electric power, so that electric power can be generated without using sliding contacts. Supply. And
In order to reciprocate the row-shaped display element and the light-receiving power generation element or the coil in a non-contact manner, a linear motor is used or a reciprocating force is transmitted by a magnetic force from a reciprocating mechanism installed close to the linear motor. The supply of image signals to the row display elements is performed by infrared rays or radio waves.

As described above, a display device using mechanical sweeping, in which power supply and reciprocating motion are performed in a non-contact manner, can be realized.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a reciprocating display frame 1 using a solar cell as a power generating element and three primary color built-in LEDs as display elements.
FIG. 1 illustrates an embodiment of the present invention in which a reciprocating motion is transmitted via magnetic force.

The reciprocating display frame 100 is a three-primary color built-in LED
It comprises a row display section 110 in which a number of 115 are arranged in a row, a power supply section 120 in which a number of solar cells 125 are connected, and a control circuit 60 for supplying power to these and controlling blinking. In the front, the row display unit 110
However, the power supply unit 120 is located on the rear surface.

FIG. 2 is a side view showing that the reciprocating display frame 100 reciprocates up and down. The lamp 220 is attached to the back surface of the light shielding plate 200, and the solar cell 125 irradiates this to generate power, This power is LED1 with built-in three primary colors
15 is caused to emit light. As shown in FIG. 2, the solar cell 125 is arranged at the upper, middle, and lower stages so that the solar cell 125 can continuously generate power by uniformly irradiating light while the reciprocating display frame 100 is reciprocating.

The control circuit 160 adjusts the generated voltage to be constant, and controls the blinking of the three primary color built-in LEDs 115 sequentially from the leftmost end to the rightmost end to perform horizontal scanning. In this way, the three primary color built-in LEDs 115 of the row display unit 110 are electronically horizontally swept, and in synchronization with this, the reciprocating display frame 10 is rotated.
Zero body is subjected to mechanical vertical scanning.

In order to realize this mechanical vertical scanning in a non-contact manner, a reciprocating force transmitting magnet 470 attached to a reciprocating mechanism 400 installed close to the side surface of the reciprocating display frame 100.
Is reciprocated up and down, and the following magnet 1
The reciprocating motion is transmitted to the reciprocating display frame 100 with the magnetic force by following 70.

The magnetic repulsion rail 240 has a magnetic repulsion frame 140 on the side surface of the reciprocating display frame 100 so that the magnetic repulsion rail 240 can maintain a constant gap with the light shielding plate 200 by magnetic repulsion. Thus, the reciprocating display frame 100 can reciprocate up and down along the magnetic repulsion rail 240 without contacting the light-shielding plate 200. The reciprocating force is transmitted by the magnetic force, so that the mechanical vertical scanning is completely non-contact. Is made.

In this manner, a screen display combining mechanical vertical scanning and electronic horizontal scanning is realized.

If a plurality of the row-shaped indicators 100 are provided, a reciprocating stroke can be reduced. For example, as shown in FIG.
If the number of reciprocating mechanisms 400 and the number of reciprocating mechanisms 400 are also two, the reciprocating stroke of the reciprocating mechanism 400 can be halved. Therefore, when the screen size is large, the reciprocating stroke of the reciprocating display frame 100 is to be reduced. And so on.

FIG. 4 is a diagram of an example in which non-contact mechanical vertical scanning is performed by a linear motor. A linear motor rail 280 is installed on a side surface of the light shielding plate 200, and a magnetic pole change of the linear motor rail excitation coil 287 is controlled via a linear motor control circuit 245, and a linear motor driven magnet attached to the reciprocating display frame 100. The reciprocating motion is transmitted by inducing the 140 to realize a non-contact mechanical vertical scan that does not require a reciprocating mechanism.

FIG. 5 shows an example in which power is supplied by electromagnetic induction power generation. A power generating coil 190 attached to the back of the reciprocating display frame 100 penetrates a bar-shaped power generating magnet 300 fixed to the back of the light-shielding plate 200, the magnetic pole of which changes in the vertical direction. Power is supplied to the built-in LED 115.

FIG. 6 shows a row display unit 100 and a power supply unit 120.
Is an example of the present invention in which a screen is rotated and displayed on a screen. The motor 500 rotates from the back of the rotating display frame 190 rotatable along the disk-shaped light shielding plate 200.

Then, the three primary color built-in LEDs 115 of the row display unit 100 perform electronic scanning in synchronization with this rotation. At this time, the image signal and the synchronization signal are converted into an image signal suitable for rotational scanning. Further, since the rotation center is scanned redundantly, the intensity of the output of the display element is controlled so as to correct this.

If the torque is transmitted from the outer end of the rotation display frame 190 by the magnetic force in the same manner as the stepping motor, the rotation can be transmitted in a non-contact manner.

[0023]

As described above, in the present invention, since the total number of light emitting elements can be reduced, resource saving can be realized. In particular, since the organic EL is light and can emit light with small power, it is most suitable as the light emitting element of the present invention,
If this is used, it can be expected to spread as a small-sized, low-cost, resource-saving display.

[Brief description of the drawings]

FIG. 1 is a perspective view of the present invention in which a part of a light shielding plate is cut out.

FIG. 2 is a side view of the present invention showing a reciprocating display frame reciprocating up and down.

FIG. 3 is a perspective view of the present invention having a reciprocating display frame and two reciprocating mechanisms.

FIG. 4 is a perspective view of the present invention in which a linear motor reciprocates in a reciprocating display frame.

FIG. 5 is a perspective view of the present invention in which power is supplied by electromagnetically induced power generation.

FIG. 6 is a perspective view of the present invention in which a rotating display frame is rotated and displayed on a screen.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 reciprocating display frame 110 display unit 115 LEDs with three primary colors 120 power supply unit 125 solar cell 140 magnetic repulsion frame 160 control circuit 170 tracking magnet 180 linear motor attracted magnet 190 power generation coil 200 light shielding plate 220 lamp 240 magnetic repulsion rail 280 linear Motor rail 285 Linear motor control circuit 287 Linear motor rail excitation coil 300 Magnet for power generation 400 Reciprocating mechanism 470 Induction magnet 500 Rotation display frame 600 Rotation transmission motor

Claims (6)

[Claims] 1. A display device in which a row-shaped display section in which a large number of light-emitting elements are arranged in a row and a power supply section composed of a light-receiving and power-generating element for supplying power thereto are reciprocated integrally to display a screen. 2. A display device in which a row-shaped display section in which a large number of light-emitting elements are arranged in a row and a power supply section composed of a light-receiving and power-generating element for supplying power thereto are rotated integrally to display a screen. 3. A display device in which a row display section in which a large number of light emitting elements are arranged in a row and a power supply section comprising a coil for supplying power to the row display section reciprocate integrally to display a screen. 4. A display device in which a row-shaped display section in which a large number of light-emitting elements are arranged in a row and a power supply section composed of a coil for supplying power thereto are rotated integrally to display a screen. 5. The display device according to claim 1, wherein the reciprocating force is obtained by a linear motor. 6. The display device according to claim 1, further comprising a reciprocating mechanism adjacent to the reciprocating mechanism, wherein the reciprocating force is transmitted from the reciprocating mechanism through a magnetic force in a non-contact manner to reciprocate.