JPS5937782A - Information display device - Google Patents

Abstract

PURPOSE:To attach and detach a discharge lamp and a current limiting device to and from a display device easily and to simplify operation, by forming at least the discharge lamp and current limiting device of a display element in one-body structure. CONSTITUTION:The display element is constituted including the fluorescent lamp 31, high frequency generator 41 for energizing it, and current limiting device 51. The lamp 31, device 41, and device 51 are stored in a case 6 made of, for example, resin or metal and united together. This case 6 has an opening 7 for projection at one end part and a connector 8 for an electric wire connection at the other end part. This case 6 consists of a bottom part 61 and a lid part 62, which are formed cylindrically by adhesion, etc. Then, attachment parts 10 having through holes 9 for attachment to an electrooptic display board are provided on external surface sides of the members 61 and 62. This structure simplifies the attachment to the electrooptic display board consisting of numbers of display elements and also facilitates the maintenance control over the display elements.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an information display device in which a large number of display elements are arranged and information is displayed using these display elements.

2. Description of the Related Art Conventionally, information display devices for stadiums and the like are known that use a light bulb or a cathode ray tube as one display element. However, those using light bulbs had the problem of poor luminous efficiency and high power loss, and those using cathode ray tubes had the problem that it was difficult to obtain sufficient light intensity.

In addition, another conventional device has been proposed in which one display element is constructed using a fluorescent lamp (!￥￥Kiaki, 1
No. 6-5894, Special Publication No. 48-3079).

Since these use fluorescent light,9 luminous efficiency is high;
A sufficient amount of light can be obtained.

However, the cited document uses a resistor as a current limiting device because the fluorescent lamp is lit with a DC voltage. For this reason.

There is a lot of voltage loss in the resistor as a current limiting device.

This has the problem of generating a large amount of heat and requiring a large cooling device.

In order to solve this problem, the present inventors have proposed a device in which the 9 display element is configured to include a discharge lamp such as a fluorescent lamp and a high frequency generator that energizes the discharge lamp. (Patent Application No. 57-130579). This stuff is power loss.

This is effective in that it can reduce the amount of heat generated and improve responsiveness to the 9 display signal.

As described above, the present invention comprises a display element including a discharge lamp and a high-frequency generator for energizing the discharge lamp, and comprises: 9 installation of the display element on an electronic display panel; 2 maintenance and management of the display element; The purpose is to provide a complete information display device that is easy to use.

The present invention comprises nine display elements including a discharge lamp, a high frequency generator for energizing the discharge lamp, and a current limiter for the discharge lamp, and at least the discharge lamp and the current limiter of the nine display elements are integrated. It is characterized by its structure.

The present invention comprises nine display elements including a discharge lamp, a high frequency generator for energizing the discharge lamp, and a current limiter for the discharge lamp, and at least the discharge lamp and the current limiter of the nine display elements are integrated. It is characterized by its structure.

In the present invention, since at least the discharge lamp and the current limiter are integrated, the discharge lamp and the current limiter can be attached to and removed from the electronic display panel at the same time. [7] Therefore, the work is simplified, and this is particularly useful when a large number of display elements, such as several thousand or hundreds, are used for a large display panel such as one used in a stadium. Also.

It is easy to replace discharge lamps, etc., and wiring work on site can be reduced. In the present invention, the discharge lamp and the current limiting device can be integrated because the discharge lamp is lit using a high frequency voltage. That is, by lighting at a high frequency, inductors and capacitors used as current limiting devices can be made much smaller and lighter than when lighting at low frequency voltages such as commercial frequencies. Therefore, even if the discharge lamp and the current limiting device are integrated into one unit, the device can be made compact, and the current limiting device can be attached to the surface of the electronic display panel along with the discharge lamp without increasing the strength of the electronic display panel.

In the present invention, the high frequency is defined as a frequency of several hundred Hz or higher, as described in Japanese Patent Application No. 57-130579. However, in consideration of reducing switching loss in semiconductor switching elements such as transistors and thyristors commonly used in high frequency generators and avoiding audible frequencies, it is preferable to set the frequency to 20 kHz to 50 kHz.

Further, in one aspect of the present invention, the high-frequency generator is provided in one-to-one correspondence with the discharge lamp, or one high-frequency generator is provided for two or more discharge lamps. In the case of one-to-one correspondence, if one unit is provided for three discharge lamps that emit red, blue, and green in a color display, the high-frequency generator must be integrated with the discharge lamp and the current limiter. I can do it.

In this case, the wiring between the high-frequency generator, the ocular flow device, and the discharge lamp can be omitted or extremely shortened, and the high-frequency
Ichikawa's attenuation can be reduced.

On the other hand, when energizing two or more discharge lamps with - high-frequency generators, the high-frequency generators are separated from the discharge lamps and the current limiter, for example, inside the electric display panel or inside the electric display panel. It can be placed outside. As the high frequency generator, a transistor inverter, a thyristor inverter, etc. can be used.

Furthermore, in the present invention, the discharge lamp and the current limiting device (and in some cases, the high frequency generator) can be housed and integrated in, for example, a circular or square cylindrical case. In this case, an opening for light projection can be provided at one end of the cylindrical case, and a wire connection portion, such as a connector, can be provided at the other end. In this way, the discharge lamp and the current limiting device can be easily installed by providing a through hole in the front surface of the light display panel in advance, and the electrical connection after the installation is also simple. Note that the integrated structure may be other than the one described above; for example, if the discharge lamp and the current limiting device (or high frequency generator) are made separable, it will be easier to replace the short-key discharge lamp, which has a relatively short lifespan. It is something that becomes.

Furthermore, in the present invention, the discharge lamp may be a fluorescent lamp, a neon lamp, etc. 0 The following nine embodiments of the present invention will be described with reference to the drawings. 1st
6 to 6 show an embodiment of the present invention, for example, a case where a black and white television signal is displayed. (1)
is an electric display panel with many display elements (21) to (2) on the front.
n) are arranged. This electric display board +1)
are installed at baseball stadiums, etc., and the displayed content can be viewed from a distance of several tens of meters or more. Therefore, in the nine embodiments, several dozen or more display elements (21) to (2n) are used. 9 of display elements (21)-(2n)
The display element (21) will be explained using FIGS. 2 to 4. The display element' (2+) has a fluorescent light of 27 (31),
This fluorescent lamp (3t) includes a side frequency generator for energizing ffi and a current limiting device, and is a high frequency generator in nine embodiments! (4t) is a well-known Bushsol type transistor.

The configuration of the inverter, which is the high-frequency generator (41), is well known, so a description thereof will be omitted. (301) is a switch device of a control device (20) which will be described later.

The discharge lamp (31) is turned on or off by controlling the supply of the three-frequency voltage by the switch device (30+). In addition, in the second embodiment, since the discharge lamp (31) is a fluorescent lamp, the electrodes of the fluorescent lamps are preheated and heated independently of the switch device (301).
The aim is to light up the lamp quickly and to prevent deterioration of its service life.

The discharge lamp (3+), the high frequency generator (41) and the current limiter f)j', (51) are housed and integrated in a cylindrical case (6) made of, for example, resin or metal. The case (6) has an opening (7) for light projection at one end, and a connector (8) for connecting electric wires at the other end. The case (6) also includes a bottom portion (61) and a lid portion (62), and these members (61).

(62) is formed into a cylindrical case (6) by gluing, applying tape (not shown) to the outer peripheral surface, and forming a retaining means (not shown) at the joint. Furthermore, each member (61) and (62) of the case (6) has a 1 [c
A mounting part 00) having a through hole (9) is provided for mounting on the optical display panel (1).

In addition, there are protrusions CI+) and O on the inner surface of the nook part (61).
ll is provided.

The high frequency generator (41) and current limiting 4A position (51)
is attached to the printed circuit board 03), and this printed circuit board 0□□□ is supported by the front gt2 protrusion Q+), 01). In addition, if there are two actual switches (in the example 0), the switch device (30+) is also connected to the printed circuit board (1:
The discharge lamp (31) is bent into a U-shape and faces the light projection opening (7).04 is fixed to the printed circuit board (131) with a receptacle.

It supports the discharge lamp (31) in a detachable manner.

In addition, a shade, filter, etc. can be provided on the opening for projecting light as appropriate.Also, a reflector plate (9) may be provided as appropriate. It is also possible to apply a coating of material.

Although only the CFi display element (21) has been described in FIGS. 2 to 4, the other display elements (22) to (2n) have the same configuration. Display elements (21) to (2n) as described above
) is attached to the front of the electronic display panel (1). That is, the electronic display board (1) has through holes (151) + (1
52),..., insert the display element (2) from the inside of the electronic display panel (1).
+).

(22) is installed, and the above installation is done through the screw (
16).

Next, 9 display control will be described. (A) is a control device that controls the display elements (21) to (2n) to display information (television signals in this embodiment) on the electronic display panel. In this embodiment, the control device (A) first connects the wireless well-known amplifier Q11. Video detector (2): Consists of a receiving section consisting of an elephant amplifier (23), and from this receiving section transmits TV + /60 second cycle. Section J fill device c!1111: , for each video of the video signal from the receiving section, the display element (2I) ~
(2n) has a control section that controls @'#S melting.1. I'm in the middle of the day. That is, the control units t and l control the light outputs of the display elements (21) to (2n) according to the white to black luminance indicated by the video signals, and the control units t and l control the light outputs of the display elements (21) to (2n).
3.32 steps or continuous dimming. In this embodiment, the control section includes a synchronization circuit Q4) which obtains a synchronization signal from the video +φ filter 2c), and an ε- equalization circuit c! Controlled by AI and synchronized with video signal 1. , fr sawtooth wave generator G! ! +1, said synchronization G! 4
) K-control king! This address setting device (2b) is used to set the address of the display elements (21) to (2k) arranged in the - column of the optical display panel (1).
Addresses for the display elements (21) to (2k) in the − column (column function device (27) that shifts to the next column when the output of the Fi number is finished, and the column layout of the optical display panel (1)) A comparator (291) is provided in each of the multiplexers (28t) to (28e) that receive the video signal from the video amplifier (7!31) and compares the magnitude of the video signal with the video signal. ~(29,') and the switch devices (3(ll')~) that control the upper n[] display elements (21)~(2n) according to the outputs of the comparators (29r)~(29n). (30n).

Each component of this control device is well known. Note that in this embodiment, the switch device w (30t) ~
(30n) is the switch device (30+
), a transistor CAD and a diode bridge G21 inserted between the current limiting device (51) and the discharge lamp (31), and a control circuit (c) that controls the on/off of the transistor ()υ. It has the following.

The above-mentioned control device (a) is housed in the electric display panel (1), arranged in a row, or in a separate operation room (
Not shown. ).

Next, we will discuss the effect. The display elements (21) to (2n) are manufactured in advance and are attached to the electronic display board (1) using screws αQ. In this case, the display element C2l)'(2n)'c is emitted from the inside of the electronic display panel (1), and the light (3)
)(3n) to f:lJJl(11) and the through hole (151
) to (15t+).

Install the screw (16) by inserting it through the through hole (9) of the part (101) and screwing it into the electric display (11).Replace the discharge lamps (31) to (3n). In this case, remove the display element and install a new display element by reversing the operation described above.

About displaying information? , the multiplexer (28+) in the control device Q()) is controlled by the address setting device (2G) and the column setting device (27), and the t display elements (21) to
(2k), and each comparator (29+
)-(29k), the 1 video signal is compared with the output of the sawtooth G signal generator (25).

At 7, the comparators (291) to (291c) output the υI frequency'! Outputs a signal that determines when pressure is supplied. Depending on this output signal, the switch device (30t) ~ (knee + OK)
) is controlled to turn off. In other words, when the video signal is large, the high frequency applied to the discharge lamps (31) to (3k), the specific pressure 1 ((()) is increased, and the light output is increased by increasing the light output. .When the video signal is small, the optical output is low and the color becomes close to black.When the control of the display elements (21) to (2k) of column 1' is completed, the 9th column setting device C2' The multiplexer (282') in the second column of C-C is specified by 0, and the display elements (2 to 1) to (2210) are controlled in the same manner as described above.When the first column is completed in this way, one cycle of the video signal is is over.

In the next cycle 11, the above-mentioned operation is repeated and a television image is displayed on the electronic display lip (1).

In addition, in this embodiment, the display elements (21) to (2n) are attached to the optical display panel (1) using screws C6) and two other well-known engagement means. (
It's also good. In addition, the 9 display elements (21) (2n) are attached and detached from the front side of the 1-light display panel (1).
C is also good. In addition to the information display control of this embodiment, for example,
It may be the one shown in Publication No. 9% Publication No. 41-20845.

, 7th: Figures 1 to 159 show other embodiments 2.
It is.

In this embodiment, one color is displayed. In this example, red, W color, and green light are output 1)
One pixel consists of three single light t4 (1), fil, and C4, and - high frequency generators (4
3Ili5 emission 1χ light (Iff) for 3, +
41. )IZ are provided in parallel. 1441, (
45) and (41i) are each current limiting devices. So 7-〇, the above ij'f, light 1.1 (odd, +411
．． (For 421 = JL, there are switch devices t47 controlled by red, 8 color, and green control signals), +491.

In this example, 1. The structure of Table 7J' element +5111 is basically the same as that shown in Figures 2 and 3.
There is a cutout (l) to divide the room.

A large number of display elements 00) having such a configuration are arranged on an electronic display board (1) as shown in FIG. 1, for example, to display information. In this case, the control device may be of any type as long as it can generate color control signals, such as the one shown in Japanese Patent Publication No. 50-27688.

Note that in the present invention, any control device may be used and the information to be displayed may be other than television signals.

As detailed above, the present invention comprises one display element including a discharge lamp, a current limiting device, and a high frequency generator, and
Since at least the discharge lamp and the current limiting device are integrated, the nine display elements can be easily attached to the electronic display panel, and wiring can be omitted or simplified. Furthermore, maintenance and management of the nine display elements becomes easier.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a circuit diagram showing an example of the circuit of a display element, FIG. 3 is a partially sectional side view showing an example of the structure of the display element, and FIG. FIG. 2 is an exploded perspective view of a display element. FIG. 5 is a partially enlarged view showing an example of how the display element is mounted on the electronic display panel, FIG. 6 is a block diagram showing an example of the control device, and FIG. 7 is a circuit diagram showing another example of the circuit of the display element. FIG. 8 is a partially sectional side view showing another example of the structure of the display element, and FIG. 9 is a sectional view of FIG. 8. (1) - Electric display board? (2t) ~ (2n), 51
display element. (3t), (41→ri... discharge lamp, (4υ, (43...)
・High frequency generator. (51), (44) ~ (4G)・Current limiting device, (2υ・Control device. Patent applicant Toshiba Electric Materials Co., Ltd. agent Patent attorney Yoshihiro Onoda 1st item 2nd name 1'14 +=■ O γ mouth skill δ mouth fang ?

Claims (8)

[Claims] (1) An electric display panel comprising a large number of display elements arranged, and a control device that controls each of the display elements to display information on the electric display panel. The display element includes a discharge lamp, a high frequency generator for energizing the discharge lamp, and a current limiting device for the discharge lamp, and at least the discharge lamp and the current limiting device are integrated. An information display device characterized by: (2) The information display device according to claim (1), wherein the display element is one in which the discharge lamp, the high frequency generator, and the current limiter are integrated. (3) The information display device according to claim (1) or (2), wherein the display element is housed in a cylindrical case. (4) The cylindrical case has an opening for light projection at one end,
1. Has an external wire connection part on the other end. An information display device according to claim (3), characterized in that the information display device is made of a. (5) The information display device according to claim (3) or (4), wherein the cylindrical case is removably attached to the board of the electronic display panel. (6) Information according to any one of claims (1) to (5), characterized in that a plurality of the high-frequency generators are provided in one-to-one correspondence with the discharge lamps. Display device g. (7) The high-frequency generator according to any one of claims (1) to (5), wherein one high-frequency generator is provided corresponding to two or more of the discharge lamps. Information display 1ζ position. (8) The high-frequency generator is characterized by comprising a commercial AC box, a rectifier that rectifies the source, and an inverter that converts the output of the rectifier into a high-frequency AC voltage. Scope of claims (11=17)
The information display device according to any one of the following.