JPH09325709A - Solar battery type display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solar battery type display unit which is reducible in cost and can prevent trouble such as erroneous wiring. SOLUTION: Display units 100 are mutually connected to transfer an interlocking instruction signal CS interlocking display operation from the light emitting means 20 of a precedent-stage display unit 10 to the light emitting means 20 of a following-stage display unit 100 and when the display units 100 and 1090 are disconnected from each other, the light emitting means 20 of the display units 100 are enabled to perform display operation individually.

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 interlocks with the arrow head from the rear of the arrow toward the tip of the arrow and sequentially lights up. 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 reliably performing an interlocking operation with a simple device configuration.

In order to solve the above-mentioned problems, the invention according to claim 1 is a solar cell which receives sunlight to generate an electromotive force, and a storage means capable of storing the generated power. A display unit that receives the electric power and performs a light emission display, a receiving unit that receives an interlocking command signal from the outside, a transmitting unit that transmits the interlocking command signal to the outside, and a generation of the solar cell when sunlight is received. The electric power 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 received, the display unit is operated according to the interlocking command signal. And a control means for autonomously driving the display unit when the interlocking command signal is not received. According to the invention described in claim 1, when the control means receives the interlocking command signal via the receiving means, the control means takes out stored power from the power storage means and supplies it to the display unit to drive the display unit. When the display operation is completed, the interlocking command signal is transmitted from the transmitting means. The transmitted interlocking command signal is transmitted to the subsequent display unit having the same configuration as the main display unit, which is connected to the display unit. As a result, the subsequent display unit performs the same operation as described above, and the subsequent display unit is 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 unit, and the display unit is driven by itself. As described above, the display device according to the present invention can perform two display operations, that is, a single display operation and an interlocking display operation, the central controller that is conventionally required in the interlocking operation is unnecessary, Costs, construction costs, etc. can be reduced, and it is possible to avoid the risk of circuit damage due to static electricity, erroneous wiring, electrical noise from inter-device wiring, and malfunction or damage due to induced lightning that can occur when connecting conventionally. Further, since each display unit can perform an interlocking operation or an individual operation, it is possible to reduce the number of models to be in stock. Since the interlocking command signal need only be a simple synchronization signal, the cost for this does not increase. The invention according to claim 2 is 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 displays a light, and an external display unit. Receiving means for receiving an interlocking command signal, transmitting means for transmitting the interlocking command signal to the outside, and storing the generated power of the solar cell in the power storage means when receiving sunlight.
The stored power stored in the storage means is supplied to the display unit when the sunlight is not received, and the display unit is set in the linked operation mode when the linked command signal is received within a certain time when the display unit is driven. And a control unit that drives the display unit in the single operation mode when the display unit is driven and does not receive the interlocking command signal within a predetermined time. According to the second aspect of the present invention, the control means drives the display unit in the interlocking operation mode when the interlocking command signal is received within a certain time when the display unit is driven, and the stored power is stored in the power storage means. It is taken out and supplied to the display unit, and the display unit is driven in the interlocking operation mode. When the display operation is completed, the interlocking command signal is transmitted from the transmitting means. The transmitted interlocking command signal is transmitted to the subsequent display unit having the same configuration as the main display unit, which is connected to the display unit. As a result, the subsequent display unit performs the same operation as described above, and the subsequent display unit is linked in a relay manner in the same manner. On the other hand, the control means drives the display unit in the single operation mode when the interlocking command signal is not received within the fixed time. That is, the stored power is taken out from the power storage means, supplied to the display unit, and driven in the display unit single operation mode. As described above, the display device according to the present invention determines whether or not the interlocking command signal is received, and automatically switches between the independent display operation mode and the interlocking display operation mode according to the result of the determination. It eliminates the need for a central controller, which was necessary for operation, and can reduce material costs, construction costs, etc., circuit damage due to static electricity when connecting conventionally, miswiring, electrical noise and induction from inter-device wiring The risk of malfunction and damage due to lightning can be avoided. Further, since each display unit can perform an interlocking operation or an individual operation, it is possible to reduce the number of models to be in stock. Since the interlocking command signal need only be a simple synchronization signal, the cost for this does not increase. According to a third aspect of the present invention, 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 displays a light, and an external display unit are provided. A receiving unit to which an optical fiber for receiving the interlocking command optical signal can be connected, a transmitting unit to which an optical fiber for transmitting the interlocking command optical signal to the outside can be connected, and the power generated by the solar cell when sunlight is received. When the stored power is stored in the storage means, the stored power stored in the storage means is supplied to the display unit when the sunlight is not received, and when the interlocking command light signal is received within a certain time when the display unit is driven, The display unit is driven in the interlocking operation mode, and the control unit drives the display unit in the single operation mode when the interlocking command light signal is not received within a predetermined time. This claim 3
According to the invention described in (1), since the interlocking command signal is transmitted not by an electric signal but by an optical signal, malfunction due to noise or inductive lightning intrusion, damage to electronic parts, electronic element due to static electricity during electric wiring work It is possible to avoid the risk of damage, etc., and improve the reliability of operation.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, preferred embodiments of the present invention will be described with reference to the drawings. (First Embodiment) FIG. 1 shows a first embodiment of the present invention. FIG. 1 shows the configuration of the display unit 100 alone, and the display unit 100 is provided with a solar cell 10. The solar cell 10 is positioned above the entire casing 12 so as to efficiently receive sunlight, and is housed in a transparent light-receiving portion casing 14 to be 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 marker 18, the LED 20, the optical fiber bundle (optical fiber bundle) 22, the control board unit 24, and the like are housed 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 into an arbitrary shape desired to be displayed.
In the above example, it is "arrow" type as a whole. Sign 18
The light emitting end 3 which is the light emitting end of the optical fiber bundle 22 is spaced apart from each other by a predetermined distance in the contour portion 34 framing the shape of
2 is exposed. A mounting member 28 is mounted in the entire casing 12, and the LED 20 is mounted on the mounting 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 this optical fiber bundle 28 are extended to the sign portion 18, and the light of the LED 20 is transmitted to the light emitting end 32 of the sign portion 18. Control board unit 24 and mounting member 28
Is fixed to the inner wall of the overall casing 12 for electrical insulation. (Second Embodiment) Next, with reference to FIG. 2, an example of a system in which a plurality of display units 100 are combined and the respective display units are interlocked to perform a predetermined display will be described. In this embodiment, a plurality of display units 1
.. 100N are connected in one direction, for example, from left to right in the drawing.
.. Are formed so as to display the flow of light indicated by the arrow on the sign section 18 by interlocking the lighting of 100N sequentially, and for example, the state of the traveling direction of the road, that is, the presence of a curve, or the vehicle on the road under construction It is configured to call attention to the driver or the like. Each control board unit 24 of each display unit 100A ... 100N has connection terminals 50, 52, 54, 56 for interlocking control.
And these connection terminals 52 to 56 and the signal wiring 5
The interlocking command signal CS is sequentially relayed from 5 (hot side) and 57 (GND side) to the control board unit 24 of the rear display unit 100N from the front display unit 100A. The connection terminals 54 and 56 are connected to the solar cell 10 including the battery 16 and the terminal 5
6 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 of the control board units 24 charges the storage battery 16 from the respective solar cells 10 during the daytime (sunlight reception time), and supplies the electric power charged in the storage battery 16 at nighttime (sunlight non-reception time) to the LED 20. To make it emit light. Next, the interlocking operation will be described. First, when the interlocking command signal is given to the terminal 50 of the leftmost display unit 100A, the control board unit 24 turns on the transistor 40 to supply the electric power charged in the storage battery 16 to the LED 20 to emit light. L
The light of the ED 20 is sent to the light emitting end 32 of the sign portion 18 via the optical fiber 30, and a display is performed so as to shape the sign portion 18. In this way, the first display unit 10
When the lighting operation of 0A is completed, the display unit 1
2 from terminals 52, 54 of the control board unit 24 of 00A
The interlocking command signal CS for interlocking operation is transferred to the terminals 50 and 54 of the control board unit 24 of the display unit 100B (not shown). By this interlocking command signal CS, the control board unit 2 of the second display unit 100B
4 supplies the electric power charged in the storage battery 16 to the LED 20 to cause the light emitting end 32 of the sign portion 18 to emit light via the optical fiber 30. Next, the second display unit 100
When the control board unit 24 of B finishes the light emission of the light emitting end 32 of the sign portion 18, the second display unit 100B
From the terminals 52 and 54 of the control board unit 24 of No. 5 to the terminal 5 of the control board unit 24 of the third display unit 100C.
The interlocking command signal CS is transferred to 0 and 54. In the same manner, the display unit 1 in the subsequent stage is sequentially operated by the interlocking command signal CS
By performing the same control up to 00N and causing the light emitting end 32 of the indicator portion 18 of each display unit to emit light, for example, an arrow-shaped flow can be displayed. 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, each display unit 10
The control board unit 24 of 0 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 predetermined time period elapses after the interlocking command signal CS is input to the display unit 100 in the preceding stage, the display unit 100 in the preceding stage can display the display unit 100 in the subsequent stage. When the interlocking command signal CS is not given, each display unit 1
00 can be made to perform the display operation independently. First
In the embodiment (FIG. 1) of FIG.
From the control board unit 24 to the other display unit 100
Although the interlocking command signal CS is transmitted to the control board unit 24 by wire using the electric wiring portion, in the embodiment of FIG. 3, the interlocking command signal CS is transmitted by an optical signal for transmitting an optical signal. This is performed using the optical fiber 95 which is a transmission means. (Third Embodiment) Next, a third embodiment of the present invention is shown in FIG. Each display unit 100 of this embodiment
Then, the display unit 100 of the second embodiment (FIG. 2)
In addition to the LED 20 of FIG. 3, another communication dedicated LED (light emitting element) 80 and a light receiving element 90 for transmitting the interlocking command signal CS are further added. The LED 80, which is a light emitting element of the interlocking command signal CS, is driven by the driving transistor 97 and the resistor 99. The base of the driving transistor 97 uses the dividing resistors 98 and 96 to control the control board unit 24. It is connected to the. The interlocking command signal CS emitted by the LED 90 of each display unit 100 is transmitted through the optical fiber 95 to the light receiving element 90 of the next stage.
Is received. The LED 80 is a light generation unit that converts an interlocking command signal CS for interlocking the display operation from the LED 20 of the display unit 100 in the front stage to the LED 20 side of the display unit 100 in the rear stage into an electric signal-optical signal. The optical fiber 95 is the LED 80
It is a light transmitting means for transmitting the interlocking command signal CS from (1) to the light receiving element 90 of the display unit 100 in the subsequent stage. Light receiving element 9
Reference numeral 0 is an electric signal generating means for converting the optical signal transmitted by the optical fiber 95 into an electric signal. Control board unit 2
When the interlocking command signal CS is given from the LED 80 of the display unit 100 in the front stage to the light receiving element 90 of the display unit 100 in the rear stage, the display unit 4 sequentially performs the display operation from the display unit 100 in the front stage to the display unit 100 in the rear stage. They are interlocked, and as a result, like the first embodiment, 1
The flow of the arrow can be displayed by sequentially performing from the nth display unit 100 to the Nth display unit 100. On the other hand, when the interlocking command signal CS is not given from the display unit 100 in the front stage to the display unit 100 in the rear stage, the control board unit 24 operates the display unit 1 for each display unit 1.
00 The display operation is performed independently. Note that the present invention is not limited to the above-described embodiment, and for example, the shape of the marker portion 18 in FIG. 1 may be a shape other than the arrow. Further, as the light emitting means and the light generating means, other types of LEDs can be adopted.

As described above, according to the invention as set forth in claim 1 or 2, the central controller, which has been conventionally required in the interlocking operation, is unnecessary, and the material cost, the construction cost, etc. are reduced. Therefore, it is possible to avoid the risk of circuit damage due to static electricity, erroneous wiring, electrical noise from inter-device wiring, or malfunction or damage due to inductive lightning, which has occurred in the conventional connection. Further, since each display unit can perform an interlocking operation or an individual operation, it is possible to reduce the number of models to be in stock. Since the interlocking command signal need only be a simple synchronization signal, the cost for this does not increase. According to the invention of claim 3, since the interlocking command signal is sent by optical transmission instead of sending the interlocking command signal by the electrical wiring between the display units, malfunction due to noise or induced lightning intrusion, damage to electronic parts, and electrical It is possible to avoid the risk of damage to electronic elements due to static electricity during wiring work.

[Brief description of drawings]

FIG. 1 is a front view showing a first embodiment of a display unit of the present invention.

FIG. 2 is a diagram showing an example of electrical connection according to a second embodiment.

FIG. 3 is a diagram showing an example of electrical connection according to a third embodiment.

FIG. 4 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 80 LED (light generating means) 90 Light receiving element (electrical signal generating means) 95 Optical fiber (light transmitting means) 100 Display unit CS interlocking command signal

Claims (3)

[Claims] 1. A solar cell that receives sunlight to generate an electromotive force, a storage unit capable of storing the generated power, a display unit that receives the power and displays a light, and an interlocking command signal from the outside. Receiving means for receiving, transmitting means for transmitting the interlocking command signal to the outside, electric power generated by the solar cell is stored in the storage means when sunlight is received, and stored in the storage means when sunlight is not received. Stored electric power is supplied to the display unit, the display unit is driven according to the interlocking command signal when the interlocking command signal is received, and the display unit is autonomously driven when the interlocking command signal is not received. A solar cell type display device comprising: a control unit for driving. 2. 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 displays a light, and an interlocking command signal from the outside. Receiving means for receiving, transmitting means for transmitting the interlocking command signal to the outside, electric power generated by the solar cell is stored in the storage means when sunlight is received, and stored in the storage means when no sunlight is received. The stored electric power is supplied to the display unit, and when the interlocking command signal is received within a certain time when the display unit is driven, the display unit is driven in the interlocking operation mode and the interlocking command signal is transmitted within the certain time. A solar cell type display device comprising: a control unit that drives the display unit in a single operation mode when not receiving. 3. 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 displays a light, and an interlocking command optical signal from the outside. Receiving means connectable with an optical fiber for receiving the signal, transmitting means connectable with an optical fiber for transmitting the interlocking command optical signal to the outside, and electric power generated by the solar cell when the sunlight is received is stored in the storage means. When the sunlight is not received, the stored power stored in the storage means is supplied to the display unit, and the display unit is interlocked when the interlocking command light signal is received within a certain time when the display unit is driven. A solar cell comprising: a driving unit which is driven in an operation mode and which drives the display unit in a single operation mode when the interlocking command light signal is not received within a fixed time. Type display device.