JPH04320985A - Power source device for road beacon - Google Patents

Abstract

PURPOSE:To make cable for AC power supply unnecessary by using a solar battery and a storage battery for the power source of a signal generator set on a road. CONSTITUTION:The power generated by a solar battery in a signal generator set on a road is once charged in a battery, converted to a necessary power for transmission device such as a control circuit, a transmission circuit and a modem etc., by a DCDC converter and supplied. By using a solar battery and a storage battery for a power source in this manner, the cable for AC power supply can be made unnecessary.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply device for a road signal generator.

0002

[Prior art] The prior art is Japanese Patent Application Laid-Open No. 62-280668.
As seen in the issue, power sources were not considered.

0003

[Problems to be Solved by the Invention] The above-mentioned prior art does not take installation work into consideration, and requires work such as connecting an AC power source, which takes time to install.

As shown in FIG. 1, in order to wire a beacon device attached to a utility pole, it is necessary to connect it to an AC power line through piping.

[0005] Furthermore, since grounding must be installed to prevent electric shock, piping work, road digging work, etc. are also involved.

An object of the present invention is to eliminate the need for AC power wiring.

[0007]

[Means for Solving the Problems] In order to achieve the above object, a solar cell is used as a power source instead of an AC power source. Also, the battery is always charged in case it's cloudy or the solar cells don't generate electricity.

[0008]

[Operation] The electricity generated by the solar cell charges the battery of the road beacon and drives the transmitting device from the battery.

[0009]

Embodiment FIG. 6 shows a block diagram of a road beacon device using solar cells.

[0010] The electric power generated by the solar cell is once charged into a battery, and then converted by a DC/DC converter into power necessary for transmitting devices such as a control circuit, a transmitting circuit, a model, etc., and then supplied.

On the other hand, FIG. 7 shows a block diagram of an uninterruptible road beacon. Electric power supplied from the AC power source is input to an induction lightning countermeasure circuit to prevent equipment destruction due to induction lightning, and the battery is charged by an ACDC converter. Power is supplied from this battery to each device as in FIG. 6.

FIG. 2 shows an embodiment of a power supply device using a solar cell. Solar cells 2 are arranged inside the sunshade cover 1.
Create a board.

[0013] As a result, a voltage of approximately 13V is generated.

As shown in FIG. 3, the array of solar cells 2 equivalently constitute a battery 2'.

Electric power generated from battery 2' charges battery 4.

The transmitting device 5 is driven by the power of the battery 2' and the battery 4.

FIG. 5 shows an installation situation of a road beacon device using the present invention.

A board on which solar cells are registered is attached to the beacon device 3 as a sunshade cover. Beacon device 3
A battery 4 is installed below the solar cell to store energy generated from the solar cells.

[0019] This road beacon device is used for roadside traffic signs,
Alternatively, they can be attached to road gateposts and transmit location information or road information to cars via radio waves.

[0020]

[Effects of the Invention] Fig. 4 shows the current power supply device.

AC power supply 6 (wired from a telephone pole, usually 100
The voltage applied from V) is stepped down by the transformer 7,
It is rectified by a rectifier diode 8 and smoothed by an inductance 9 and a capacitor 10. This voltage is applied to the transmitting device 5. That is, by using a solar cell, the AC power source 6, transformer 7, rectifier diode 8, inductance 9, and capacitor 10 are unnecessary, resulting in a simple configuration.

FIG. 5 shows the installation state of a road beacon using the present invention.

[0023] By using solar cells, power supply work becomes unnecessary. In other words, power supply lead-in work and ground wire installation work are unnecessary.

As is clear from FIG. 5, since the solar cell mounting position blocks sunlight irradiating the beacon device 3, the rise in temperature of the beacon device 3 can be reduced.

As shown in FIG. 7, a circuit using an AC power source requires a device to protect equipment from being destroyed by lightning, but this becomes unnecessary if the circuit is configured as shown in FIG. 6.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the installation status of roadside beacons.

FIG. 2 is a diagram showing how the solar cell of the present invention is installed.

FIG. 3 is a diagram showing a power supply section of the road beacon of the present invention.

FIG. 4 is a diagram showing a power supply section of a current road beacon.

FIG. 5 is a diagram showing the installation status of a road beacon using the present invention.

FIG. 6 is a block diagram of a road beacon device using the present invention.

FIG. 7 is a block diagram of a conventional road beacon.

[Explanation of symbols]

1... Sunshade cover, 2... Solar battery, 3... Beacon device,
4... Battery, 5... Transmitting device, 6... AC power supply, 7... Transformer, 8... Rectifier diode, 9... Inductance, 10
...capacitor.

Claims (2)

[Claims] Claim 1: In a signal generator installed on the road,
A road beacon power supply device characterized by using a solar cell and a battery as power sources. 2. A power supply device for a road beacon, characterized in that the solar cell according to claim 1 is mounted on a sunshade cover of a signal generator.