JPH1181256A - Traffic safety device by solar ray power generation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize high-safety crossing at a crosswalk by providing light sensors or weight sensors detecting a pedestrian or a bicycle and outputting signals at both ends of a road, and partially burying a luminous means illuminated or blinked when the signals from the sensors are inputted along the crosswalk of the road. SOLUTION: Solar batteries 1 are partially buried in a road 6 in the areas between a crosswalk 5 and the stop lines 61 of bicycles. Batteries 2 storing the electric power fed from the solar batteries 1 are installed at shoulders on the footpath 7 side. Weight sensors 3 are installed on the footpath 7 side of the road 6 to be operated by the weight of a person or a bicycle. Light emission diodes 4 are partially installed along the crosswalk 5 of the road 6 to be lighted or blinked when the signals from the weight sensors 3 are inputted, thereby the attention of drivers is aroused when the person or bicycle crosses the crosswalk 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traffic safety device based on photovoltaic power generation, which enables pedestrians, cyclists and the like to cross the road safely.

[0002]

2. Description of the Related Art A large number of traffic lights for pedestrian crossings are used in various places. Usually, in the case of this traffic light, when a nearby push button is pressed, the traffic light automatically changes from red to blue. It has become.

[0003]

However, in such a traffic light, there are cases where it is difficult to see the signal due to a street tree, a signboard, or the like depending on the location, and without knowing that the roadway side is red (the sidewalk side is blue). There is a possibility that a pedestrian may not notice the pedestrian on a pedestrian crossing where a traffic light is not installed or a traffic signal is not installed. In particular, the danger is high when a child, an elderly person, a blind person, or the like crosses.

[0004] In view of the above-mentioned circumstances, the present invention provides a traffic safety device based on photovoltaic power generation that can realize safe crossing at a pedestrian crossing, and particularly contributes to safe crossing by children, the elderly, or blind people. It is intended to do so.

[0005]

That is, according to the present invention, there is provided a solar cell for generating an electromotive force by receiving sunlight, a battery for storing power supplied from the solar cell, An optical sensor or weight sensor that detects when a pedestrian or a bicycle comes to both ends and outputs a signal, and a light emitting unit partially buried along a crosswalk of a road that emits or blinks when a signal from the sensor is input. It is provided with.

Further, the invention according to claim 2 is configured such that, when the voltage of the battery falls below the reference value, power is supplied to the light emitting means from a commercial power supply.

[0007]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a traffic safety device based on photovoltaic power generation according to the present invention. The traffic safety device includes a solar cell 1 and a battery 2.
And a weight sensor (or an optical sensor) 3 and a light emitting means 4
And with.

The solar cell 1 generates an electromotive force in response to sunlight. In this embodiment, a solar cell 1 is connected between a pedestrian crossing 5 and a stop line 61 of a car provided on a road on both sides of the pedestrian crossing 5. Part of the area is buried on the road. That is, the solar cell 1 of this embodiment may be installed at the same level without any level difference as the pedestrian crossing 5 or the road 6, or several centimeters (2 to 3 cm) between the pedestrian crossing and the road. A height difference may be provided.

When the solar cell 1 is installed on a road, as shown in FIG. 2, a high-strength reinforced glass or reinforced plastic (transparent) 11 capable of withstanding the passing weight of a large truck or the like is provided on the road surface. It is preferable to dispose them and bury them directly below. Also, in order to prevent a passing vehicle or pedestrian from slipping by mistake when entering the area, the surface itself of the tempered glass or reinforced plastic (transparent) 11 has grid-like irregularities (thickness of several millimeters). The material 12 may be provided regularly, or a lattice-shaped uneven member (preferably one having a large friction coefficient such as rubber) may be provided on the upper surface of the reinforced glass or reinforced plastic (transparent) 11 for slip prevention. Therefore, the size of the solar cell panel may be relatively small in accordance with the size of the grid. In a place where the surface is frequently covered with soil, dust, or snow, the solar cell may be periodically sprinkled with water (either water or hot water) to remove dirt or the like, or may be subjected to wind (temperature). Wind or the like).

The battery 2 stores electric power supplied from the solar cell 1 and, as shown in FIG. 3, prevents the electric power from flowing back from the battery 2 to the solar cell 1. A diode 21 is provided. The battery 2 of this embodiment is installed between the shoulder on the side of the sidewalk to facilitate regular replacement for a certain period.

The weight sensor 3 is located on the side of the sidewalk 7 and on the road 6
Is installed near the boundary between the battery 2 and the light emitting means 4 by operating with the weight of a person or a bicycle (operating only when a specific weight is applied for a certain time or more). It is configured to close for a predetermined time (for example, a time that allows a person to cross slowly). In this embodiment, a weight sensor that operates with the weight of a person or the like is used, but the sensor is activated when the light receiving operation of the detection light is interrupted for at least a specific time interval in which the person stops and waits for traversing. An optical sensor may be used (in this case, it may be installed on a signal pole or the like).

The light emitting means 4 is partially buried along the pedestrian crossing 5 of the road, and emits light or blinks when a signal from the weight sensor 3 is input. A plurality is provided along. A light emitting diode (LED) is used as the light emitting means 4 of this embodiment (of course, the light emitting diode is not limited to this), and is turned on (or blinks) for a predetermined time by power supply from the battery 2. A configuration may be adopted in which only the initial period and the final period of the lighting time (only one of them may be used) blink, or the non-initial and final periods of the lighting period blink. Further, the emission color may be changed as appropriate to further alert the driver. The light emitting means may be installed at the same level as the road surface or may be slightly protruded from the road surface (for example, about several millimeters).

In this embodiment, the battery is charged from the solar cell. However, when a commercial power supply is used in combination, when the voltage of the battery drops below a certain value, this is detected and power supply to the battery is performed. It is convenient if power is supplied to the light emitting means. The power supply operation by the light emitting means may be performed by sensing that the surroundings have become dark, or may be operated all day. Further, in the case of a pedestrian crossing with a traffic light, it is more preferable that the signal on the pedestrian side changes from red to blue in conjunction with the operation of the light emitting means. If a weight sensor or light sensor is activated to detect a person on the sidewalk while waiting for a crossing, the signal automatically changes from red to blue and music starts to sound, etc. There is no need to perform the pressing operation of the button, and the road can be easily traversed, which is convenient.)

Therefore, according to this embodiment, the solar cell 1
By installing a grid-shaped non-slip on the top of the car, it is possible to inform the driver in advance of the pedestrian crossing and save the traveling speed, so the safety on the pedestrian crossing is dramatically improved improves.

[0015]

As described above, according to the present invention, a solar cell that generates electromotive force by receiving sunlight, a battery that stores power supplied from the solar cell, and a pedestrian at both ends of a sidewalk are provided. And a light sensor or a weight sensor that detects when a bicycle or bicycle comes and outputs a signal, and a light emitting unit partially buried along a crosswalk of a road that emits light or blinks when a signal from this sensor is input. Since the driver's car can be alerted when crossing a pedestrian crossing, a great effect on traffic safety can be obtained.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a traffic safety device based on solar power generation according to the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a block diagram showing an electrical configuration of the device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Solar cell 2 Battery 3 Weight sensor 4 Light emitting means 5 Crosswalk 6 Roadway 61 Stop line

Claims (2)

[Claims] 1. A solar cell that generates electromotive force by receiving sunlight, a battery that stores electric power supplied from the solar cell, and detects a pedestrian or a bicycle at both ends of a sidewalk to detect and output a signal. A traffic safety device based on photovoltaic power generation, comprising: an optical sensor or a weight sensor that outputs light; and a light emitting unit that is provided along a pedestrian crossing of a road that emits light or blinks when a signal from the sensor is input. 2. A traffic safety device based on photovoltaic power generation, wherein power is supplied from a commercial power supply to a light emitting unit when a voltage of a battery falls below a reference value.