JPS6037596Y2 - display - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a display device that is used outdoors day and night, such as a fare display used at the exit of a toll road such as an expressway.

There are already devices in streetlights, traffic signals, and the like that can flicker lights or adjust brightness depending on the brightness of sunlight.

These devices are extremely effective in terms of both labor and energy savings.

Conventionally, in display devices such as billboards and billboards, the lights built into these devices have been turned on and off by a person judging the outside light situation or by opening and closing a switch using a set timer, etc. There is.

However, these devices are unsatisfactory from a labor-saving perspective, and in winter or on cloudy days, the lights may not turn on even though it is already dark in the evening, or the lights may not turn on even though it is already dark in the evening. Even though it was getting brighter, the lights were still on and people forgot to turn them off, which was unsatisfactory from the standpoint of optimal control and energy conservation.

Particularly on expressways, etc., displays may become difficult to see even during the day due to thick fog or clouds, and if staff at tollgates open and close switches subjectively depending on the situation at the time, they may not be able to understand the displays and may It may also cause inconvenience to customers.

In this case, it is possible to use an electric display as the display, but this would require a considerable amount of brightness to be emitted during the day, which would go against the idea of energy conservation.

The present invention was developed based on the above circumstances, and an object of the present invention is to provide an indicator for expressways, etc. that saves labor and energy by automatically blinking the illumination device depending on the brightness and darkness of sunlight.

In order to achieve the above objectives, the present invention installs a light-receiving element that detects external light and darkness, and installs an illuminator around the display panel that emits a display pattern of letters, numbers, etc. to illuminate this display pattern. , this illuminator blinks according to the brightness of the surroundings by the light receiving element.

The pattern on the display panel is displayed with fluorescent paint, which is illuminated by the reflection of sunlight during the day and by the illuminator at night and in dark places, making it possible to produce a display pattern that is more efficient and easier to see than a lit display. can.

An embodiment of the present invention will be described below, taking as an example a toll display used at the exit of an expressway toll gate.

FIG. 1 is a perspective view of a fare display device according to the present invention.

In FIG. 1, this device has a display section 2 arranged on the front side of a box body 1.

The display unit 2 includes a display panel 3 that displays patterns such as fares and vehicle types, an illuminator 4 that is placed above and below the display panel 3 and illuminates the display panel 3, and a display board that displays the words 'Toll Yo'. It consists of a display board 6 that displays the words 5 and 1 Thank you.

The display panel 3 is composed of a magnetic reversal display 7 consisting of a matrix of 5×7 disks as shown in FIG.
Display pattern 9 of letters, numbers, etc. by reversing
is formed.

The display pattern is coated with yellow fluorescent paint.

The background color of the display panel 3 is black.

Further, a small box 10 with an open bottom is installed at the back of the box 1, and a light receiving element is contained in the small box 10.

The box body 1 is then established on the base 12 by the pillars 11.

FIG. 3 is an example of a circuit diagram of the blinking circuit of the illuminator 4.

In FIG. 3, a thyristor 14 is connected in series between an AC power source 13 and an illuminator 4 which is a load, and the other end of the illuminator 4 is returned to the AC power source 13, forming one circuit system. There is.

The anode side of the thyristor 14 is on the AC power supply side.

Furthermore, a series circuit of a resistor 15 and a photothyristor (eg LAS) 16 which is a light receiving element is connected in parallel to the thyristor 14.

The optical thyristor 16 is connected to the resistor 15 on the anode side.

At this time, the resistor 15 is connected to the anode side of the thyristor 14, and the cathode side of the optical thyristor 16 is connected to the cathode side of the thyristor 14.

The gate of the thyristor 14 is connected to the diode 17 on the cathode side, and the anode side of the diode 17 and the anode side of the optical thyristor 16 are connected.

Next, the operation of the fare display device having the above configuration will be explained.

Since the display panel 3 is composed of a magnetic reversal display 7 that displays a pattern using yellow fluorescent paint on a black background, the display pattern can be clearly seen day or night as long as there is light.

When it is bright during the day, the light cyrisk 16 contained in the small box 10 is always in a conductive state because it is exposed to light 18 such as sunlight.

On the other hand, since the resistance between the gate and cathode of the thyristor 14 is much higher than that of the optical thyristor 16 at this time, no current flows to the gate and the thyristor 14 cannot be fired.

On the other hand, the current flowing through the optical cyrisk 16 is limited by the resistor 15 and is small, so that the illuminator 4 does not turn on after all.

On the other hand, when the surroundings become dark, the light thyristor 16 receives 1 light.
8 is no longer applied, the optical thyristor 16 becomes non-conductive and becomes in a high resistance state.

At this time, the gate-cathode resistance of the thyristor 14 becomes lower than that of the optical thyristor, and a current sufficient to fire the thyristor 14 can flow through the diode 17 to the gate.

When the AC power supply 13 is applied in the positive direction, a current flows through the resistor 15, the diode 17, the gate of the thyristor 14, the cathode, and the illuminator 4, and the thyristor 14 is ignited.

The ignited thyristor 14 causes a large current to flow and lights up the illuminator 4.

When the AC power supply 13 becomes negative, the thyristor 14 stops passing current.

Therefore, in the circuit shown in FIG. 2, a pulsating current flows through the illuminator 4.

Although the light-receiving element for detecting the illuminance of outside light is installed on the back of the box in this embodiment, it can also be used in common with the automatic flashing device of the lighting device for an entire interchange.

In addition, the light is taken from the bottom of the small box 10 mentioned above.
This is to prevent direct exposure to light from automobile lights, etc., and if the device does not receive abnormal external light, the small box 1 is used.
0 may have any structure.

As described above, according to the present invention, a light receiving element that detects the illuminance of outside light is attached to the device and the illuminator in the display unit is automatically turned on and off, so that the illuminator is turned on when the illuminance of outside light is sufficient. There is no need to waste time, and it also eliminates the hassle of manually turning on and off the lights, which was required in the past.

Furthermore, since the paint for the display pattern is fluorescent, it is more visible and easier to see both day and night than before, and it also saves energy consumption compared to a luminescent display.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a partial front view of the same example, and FIG. 3 is a circuit diagram of the same example. 1...Box body, 4...Illuminator, 9...
... Display pattern, 13 ... AC power supply, 14
...Sirisk, 16... Light receiving element,
18...Sunbeams.

Claims (1)

[Scope of utility model registration request] A light-receiving element that operates depending on the brightness of sunlight, a thyristor that turns on when the output of this light-receiving element becomes smaller than a predetermined value, an illuminator that turns on by the output from this thyristor, and this illuminator. A display device comprising: a variable display pattern that is illuminated and coated with fluorescent paint on at least one side; and an AC power supply connected to the illuminator and the thyristor.