JPH09325708A - Solar battery type display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solar battery type display device which can accurately and surely perform interlocking operation with simple device constitution. SOLUTION: The display device 100 which uses a solar battery 10 is equipped with a photodetecting means 35 which converts an external interlocking instruction light signal CS into an electric signal to generate an interlocking instruction signal CS and sends it to a control means 24 and a light emitting means 36 which outputs part of light emitted by the display means 20 to the outside as the interlocking instruction signal CS, which can be generated by making use of the light emission by the display means 20 of the display device 100, so the need for a device dedicated to the interlocking instruction light signal generation is eliminated to simplify the constitution.

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric light display device such as an electric light display device, an electric light curved road display device, an electric light sign, a gate light, an entrance guide light, etc. It relates to a display device.

2. Description of the Related Art In general, an electric display device such as an electric road display, a curved road display or the like using a solar cell as a power source is known. This kind of indicator can be used in the daytime from solar cells to accumulators (batteries) and capacitors (capacitors).
It is designed to be stored in a storage device such as a storage device, and the stored power is taken out at night for display. FIG. 4 shows an example of a conventional solar cell type display device. This display device is configured such that a plurality of display units are combined to perform a predetermined display (for example, an arrow sign indicating that a curve exists ahead in the traveling direction of a road). Each display unit includes a solar cell 1, an LED (light emitting diode) group 2, a lighting control circuit 3,
The LED drive element 6 is provided. Each lighting control circuit 3
Is connected to a central controller 4 provided separately via a wire 5. In such a conventional display device, for example, when displaying an arrow indicating that there is a curve in the forward direction of the road, each display unit is linked and sequentially turned on from the rear of the arrow toward the tip of the arrow. However, the interlocking operation, that is, the lighting timing is centrally controlled by giving an interlocking command signal from the interlocking control circuit 7 of the central controller 4 to each lighting control circuit 3.

As described above, in the conventional display device, the central controller 4 for centralized management is required for interlocking each display unit, and in addition, the central controller 4 has a power source and the like. High labor costs are unavoidable because labor is required for installation of the equipment and the central controller 4. Further, in order to give an interlocking command signal from the central controller 4 to each lighting control circuit 3, it is necessary to perform switch operation and wiring change. Further, since the interlocking command signal is given from the central controller 4 to each lighting control circuit 3 using the electric wiring 5, circuit damage due to static electricity at the time of connection, miswiring, malfunction due to electrical noise from inter-device wiring or induced lightning, and the like. There is a risk of damage. An object of the present invention is to provide a solar cell type display device capable of accurately and surely performing an interlocking operation with a simple device configuration.

In order to solve the above problems, the present invention provides a solar cell that receives sunlight to generate an electromotive force, a storage means capable of storing the generated power, and the power Display means for receiving and displaying light emission, and storing the generated power of the solar cell in the storage means when receiving sunlight,
When the sunlight is not received, the stored power stored in the power storage unit is supplied to the display unit, and when the interlocking command signal is input, the display unit is driven according to the interlocking command signal,
When the interlocking command signal is not input, the control means autonomously drives the display means, and the light receiving device for converting the interlocking command optical signal from the outside into an electric signal to generate the interlocking command signal and sending the light to the control means. And a light emitting means for outputting a part of the light emission of the display means to the outside as an interlocking command signal. According to this invention, the interlocking command optical signal from the outside is converted into an electric signal in the light receiving means and sent to the control means. The control means extracts the stored power from the power storage means and supplies it to the display means based on the converted interlocking command signal to drive the display means. At this time, a part of the light emitted from the display means is output to the outside by the light emitting means. The output optical signal is transmitted to the subsequent display means having the same structure as the main display means connected to the display means. as a result,
The subsequent display means performs the same operation as described above, and the subsequent display means are linked in a relay manner in the same manner. On the other hand, when the control means does not receive the interlocking command signal, the stored power is taken out from the power storage means and supplied to the display means, and is driven by the display means alone. As described above, in the display device according to the present invention, the interlocking command light signal can be generated by utilizing the light emission of the display unit of the display device, so that the dedicated layer delay effect for generating the interlocking command light signal is unnecessary. The configuration can be simplified. Further, the display device according to the present invention can perform two display operations, that is, a single display operation and an interlocking display operation when a plurality of display devices are combined. It is unnecessary to reduce the material cost, construction cost, etc., and there is a risk of circuit damage due to static electricity when connecting conventionally, miswiring, malfunction or damage due to electrical noise from device wiring or induced lightning. Sexuality can be avoided. Further, since the display device itself can perform the interlocking operation and the individual operation, it is possible to reduce the number of models in stock. Since the interlocking command signal need only be a simple synchronization signal, the cost for this does not increase.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, preferred embodiments of the present invention will be described with reference to the drawings. (Structure of Display Unit Alone) FIG. 1 shows an embodiment of a display device according to the present invention. FIG. 1 shows a single display unit 10.
The display unit 100 is provided with a solar cell 10. The solar cell 10 has an entire casing 12 so that it can efficiently receive sunlight.
Is located on the upper side of the transparent receiver casing 14
It is housed inside and protected from dust, wind and rain. The entire casing 12 is a plastic or metal box, and is installed on, for example, a concrete plate, a post, or a pillar on a road. In addition to the solar cell 10, the electricity storage device 16, the indicator 18, the LED 20, the optical fiber bundle (optical fiber bundle) 22, and the control board unit 24 are provided in the entire casing 12. The electric storage 16 can use, for example, an electric double layer capacitor. The electric double layer capacitor has a long life because there is no chemical change, and the voltage is relatively high and stable, and is a secondary battery excellent in usability. The sign portion 18 is formed in an arbitrary shape desired to be displayed, and in the example of FIG. 1, it is an “arrow” shape as a whole. A light emitting end 32, which is a light emitting end of the optical fiber bundle 22, is exposed at a predetermined interval from each other in a contour portion 34 that borders the shape of the marker portion 18. Whole casing 1
An attachment member 28 is attached in the interior of the device 2, and the LED 20 is attached to the attachment member 28. The light incident end 26 of the optical fiber bundle 22 is inserted into the mounting member 28 so as to face the light emitting surface of the LED 20. The individual optical fibers of the optical fiber bundle 28 are extended to the sign portion 18, and the light of the LED 20 is sent to the sign portion 1.
8 is transmitted to the light emitting end 32. The control board unit 24 and the mounting member 28 are fixed to the inner wall of the entire casing 12 with electrical insulation. Further, a light receiver 35 for receiving an interlocking command light signal from the outside is provided on one side surface side of the entire casing 12, and a light emitter 36 for outputting the light emission of the LED 20 to the outside is provided on the other side. There is. The light receiver 35 is configured by using a photoelectric conversion element such as a phototransistor, and the end portion of the optical fiber that transmits the interlocking command optical signal can be connected. LE for the light emitter 36
An optical fiber (not shown) for guiding the light emission of D20 is connected, and the light of LED20 is output to the outside as an interlocking command optical signal. (Structure of interlocking display system) Although the above-mentioned display unit can operate by itself, a plurality of display units 100 are combined to interlock each display unit to perform a predetermined display. Can be built. In this embodiment, a plurality of display units 100A ... 100N are arranged adjacent to each other in one direction, for example, from the left side to the right side in FIG. 2, and are interlocked to sequentially turn on the display units 100A. By doing so, the sign portion 18 is formed so as to display the light flow of the arrow so that the state of the traveling direction of the road, that is, the presence of the curve is visually recognized, or the driver of the car on the road under construction is warned. It is composed. Although various lighting directions, order, and the like can be considered, an example of an arrow will be described here to simplify the description. When constructing the interlocking system, the display units 100A ... 100N are juxtaposed side by side in one direction so that the marker portions 18 face the same side. And
Light emitter 36 and light receiver 3 between adjacent display units
5 is connected to the optical fiber 5 by an optical fiber 95. By the connection of the optical fiber 95, the interlocking command optical signal is transmitted to each of the display units 100A ... 100N in a relay manner. The connection terminals 54 and 56 are connected to the solar cell 10 including the electric storage device 16, and the terminal 56 is connected to the LED 20. The terminals 52 and 54 are connected to the base of the LED driving transistor 40 via the voltage dividing resistors 42 and 44. The emitter of the transistor 40 is connected to the LED 20 via the resistor 60, and the collector is connected to the electric wiring portion 57. Each control board unit 24 charges the storage battery 16 from each solar cell 10 in the daytime (light reception time of sunlight), and supplies the electric power charged in the storage battery 16 at night (non-light reception time of sunlight) to the LED 20. To make it emit light. Next, the interlocking operation will be described. First, an interlocking command light signal (for example, a single pulse signal) is input to the light receiver 35 of the leftmost display unit 100A. Then, the control board unit 24 turns on the transistor 40, and the storage battery 1
The electric power charged in 6 is supplied to the LED 20 to emit light. The light of the LED 20 is sent to the light emitting end 32 of the sign portion 18 via the optical fiber 30, and the display is performed so that the sign portion 18 is shaped. At this time, the light of the LED 20 is sent to the light emitter 36, and is transferred as the interlocking command light signal CS to the display unit 100B (not shown) in the subsequent stage via the light emitter 36 and the optical fiber 95. The control board unit 24 of the second display unit 100B supplies the electric power charged in the storage battery 16 to the LED 20 by the interlocking command signal CS to cause the light emitting end 32 of the marker 18 to emit light via the optical fiber 30. Similarly, the interlocking command signal CS is transferred from the light emitter 36 of the front display unit to the light receiver of the rear display unit, and the display units 100A ... 100B are sequentially turned on to display, for example, an arrow-shaped flow. be able to. It should be noted that it is possible to repeatedly perform the above-described series of operations as a unit at predetermined time intervals. By the way, the control board unit 24 of each display unit 100 has a function of individually performing a display operation in each display unit 100 when the electric wiring portion of the display unit 100 is disconnected. Thereby, even when each of the display units 100 is individually used, the display operation of the sign portion 18 can be performed independently. The control board unit 24 also has the following functions. That is, even when a plurality of display units 100 are connected, even if a certain time period elapses after the interlocking command signal CS is input to the display unit 100 in the front stage, the display unit 100 in the front stage can display the display unit 100 in the rear stage. When the interlocking command signal CS is not given, each display unit 1
00 can be made to perform the display operation independently. (Other Embodiments) In the above description, an optical fiber 95 is connected between each light emitter 36 and each light receiver 35 of the adjacent display units 100A ... 100N to transfer the interlocking command optical signal CS. Optical fiber 9
It is also possible to transfer the interlocking command optical signal CS without using 5. That is, the mounting positions of the light receiver 35 and the light emitter 36 of the display unit 100 to the entire casing 12 are set to correspond to each other, and each display unit 1
00A ... 100N are arranged so that when they are adjacent to each other, the light output from the light emitter 36 of one adjacent display unit is directly incident on the light receiver 35 of the other display unit.
By doing so, each display unit 100A ...
A transmission path for the interlocking command optical signal CS is formed only by arranging 100N adjacent to each other, and the optical fiber 95 becomes unnecessary. The present invention is not limited to the above embodiment,
For example, a shape other than the arrow can be adopted as the shape of the sign portion 18 in FIG. Further, as the light emitting means and the light generating means, other types of LEDs can be adopted.

As described above, according to the present invention, since the interlocking command light signal can be generated by utilizing the light emission of the display means of the display device, the layer delay effect dedicated for the interlocking command light signal is generated. Is unnecessary, and the configuration can be simplified. Further, the display device according to the present invention can perform two display operations, that is, a single display operation and an interlocking display operation when a plurality of display devices are combined. It is unnecessary to reduce the material cost, construction cost, etc., and there is a risk of circuit damage due to static electricity when connecting conventionally, miswiring, malfunction or damage due to electrical noise from device wiring or induced lightning. Sexuality can be avoided. Further, since the display device itself can perform the interlocking operation and the individual operation, it is possible to reduce the number of models in stock. Since the interlocking command signal need only be a simple synchronization signal, the cost for this does not increase.

[Brief description of drawings]

FIG. 1 is a front view showing the configuration of a single display unit of the present invention.

FIG. 2 is a circuit diagram showing a connection example of an interlocking display system using the display unit of the present invention.

FIG. 3 is a diagram showing a circuit example of a conventional display unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Solar cell 16 Storage battery (storage means) 18 Marking part 20 LED (light emitting means) 22 Optical fiber bundle 24 Control board unit 35 Light receiver 36 Light emitter 80 LED (light generating means) 100, 100A ... 100N Display unit CS interlocking command light signal

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Nobuaki Takai 2-5-5 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd.

Claims (1)

[Claims] 1. A solar cell that receives sunlight to generate an electromotive force, a storage unit that can store the generated power, a display unit that receives the power and emits light, and displays the sun when the sunlight is received. The generated power of the battery is stored in the power storage unit, the stored power stored in the power storage unit is supplied to the display unit when sunlight is not received, and when the interlocking command signal is input, the power is stored according to the interlocking command signal. Control means for driving the display means and autonomously driving the display means when the interlocking instruction signal is not input, and converting the interlocking instruction optical signal from the outside into an electric signal to generate the interlocking instruction signal. A solar cell type display device comprising: a light receiving means for sending to the control means; and a light emitting means for outputting a part of light emission of the display means to the outside as an interlocking command signal.