JP2000160518A - Light-emitting type road guide light - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light-emitting type road guide light easily installable, and good in visibility. SOLUTION: A light-emitting type road guide light is provided with a body part of an almost cylindrical shape with axial direction laterally arranged, and a leg part continuously connected to the central outer circumferential surface of the body part. The light also comprises a watertight case 1 having lenses 4 on both the ends of the body part, light emitting elements 12 provided inside this watertight case for emitting light through the lenses, a film-shaped solar battery 2 provided so as to cover at least a part of the outer circumferential surface of the watertight case, a photodetecting means 3 arranged to the outer circumferential surface of the watertight case for detecting the brightness of the circumference, a secondary battery 9 provided inside the watertight case for accumulating the generated power of the solar battery, and control circuits 10, 11 for controlling the power supply from the secondary battery to the light emitting elements when the circumference becomes dark by being applied with the detecting output of a photodetecting means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for illuminating and displaying a road end position on a road, and more particularly to a self-powered luminous road guide light using a solar cell.

[0002]

2. Description of the Related Art There are various situations when a road is viewed from a roadway side, and sometimes there are grooves. This is dangerous from the viewpoint of the vehicle, and it is desirable that there be some sign to keep the vehicle on the road.

[0003] Therefore, conventionally, means for alerting various vehicles have been taken. For example, countermeasures are taken such as providing a columnar sign that is entirely white and partially red, or providing a sign with a reflective mirror such as orange.

[0004] Furthermore, there is a light-emitting indicator which is provided with a light-emitting indicator to further enhance the alerting effect.

[0005]

SUMMARY OF THE INVENTION By these means,
There is something that achieves its purpose just by looking at the alert function.

[0006] However, the places where this kind of warning means should be provided have a very wide variety of situations for the objects to be provided, and the number thereof is large.

[0007] Therefore, in the means provided conventionally,
There's a problem. In other words, the light-emitting type has better visibility than the non-light-emitting type, but is large in size and the installation work is not easy or cannot be performed depending on the object.

The present invention has been made in view of the above points, and has as its object to provide a light-emitting road guide light which can be easily installed and has good visibility.

[0009]

In order to achieve the above object, according to the present invention, there is provided a main body having a substantially cylindrical shape, the axial direction of which is arranged laterally, and a leg continuously provided at the center of the outer peripheral surface of the main body. A water-tight case having lenses at both ends of the main body, a light-emitting element provided in the water-tight case and emitting light through the lens, and at least a part of an outer peripheral surface of the water-tight case. A film-shaped solar cell provided to cover, disposed on the outer peripheral surface of the watertight case,
A light detecting means for detecting ambient brightness; and a light detecting means provided in the watertight case for storing power generated by the solar cell.
A secondary battery, and a control circuit for controlling power supply from the secondary battery to the light emitting element when the surroundings are darkened by the detection output of the light detection means. And a light-emitting road guide light.

[0010]

FIG. 1 shows the appearance of an embodiment of the present invention. In this embodiment, there is provided a case 1 having a shape in which a tea caddy is turned sideways and its cylindrical outer peripheral surface is attached to a column. A film-shaped solar cell 2 is attached to the upper part of the cylindrical outer peripheral surface of the case 1 and power is supplied to charge a secondary battery provided inside the tea caddy, and light emission is displayed at night using the charged power. .

In order to control the light emission display, light detection means 3 for detecting darkness is provided on the outer surface of the case 1 and means for supplying power from the secondary battery to the light emitting element in accordance with the detection output of the light detection means 3 is provided. It is provided inside the case 1. The light detecting means 3 includes, for example, a phototransistor or CdS,
A device that forms an output according to brightness is appropriate. Further, as the light emitting element, a light emitting element such as a light emitting diode having a low power consumption and a large light emission amount is suitable. Then, light from the light emitting element is transmitted to the lens 4
Is diffusely radiated. The lens 4 may be configured to not only diffuse light from the inside but also reflect light from the outside.

Since the road guide light is installed outdoors, it must be watertight so that rainwater does not seep into it, and weather resistance is also important. Therefore, the case itself is made watertight. To this end, the case 1 and the lens 4 are made of polycarbonate, and both are water-tightly bonded with an epoxy adhesive.

Further, in order to attach the legs of the case 1 to the columns 5, the columns 5 are fitted inside the legs of the case 1 as shown by broken lines, and the bands 6 are used to extend the legs of the case 1 from the outside. Tighten or seal tightly.

In addition, if necessary, a transparent protective cover 7 may be further provided on the outside of the case as shown by an imaginary line. The protective cover 7 is placed in front of the lens 4 in consideration of the workability of mounting and the watertightness, for example, a member in which the portion of the lens 4 and the lower portion of the case 1 are removed from the case 1 in the illustrated state. Prepare the members and in advance,
What is necessary is just to adhere | attach these both members with an adhesive agent. Protective cover 7
May cover the legs of the case 1. As the material, as in the case 1, it is preferable to use polycarbonate or the like.

Further, there is air in the case 1, which repeats expansion and contraction in accordance with the rise and fall of the outside air temperature. In order to avoid adverse effects on the watertightness of the case 1, the internal space of the case 1 is communicated with the column 5.

With the configuration as shown in FIG. 1, the entire shape of the guide light can be made compact, and the external shape can be hardly damaged even if a passerby collides. In particular, by giving a certain degree of roundness to the boundary between the cylindrical portion of the case 1 and the lens 4, the danger to passers-by and the like can be reduced.

The guide light can be easily installed as long as it has a support, and can be used immediately after the installation, so that it is advantageous in that no construction cost is required.

FIG. 2 shows a configuration of a circuit housed in the case 1 in FIG. In this guide light,
A power source for light emission uses a solar cell in order to eliminate wiring. As the solar cell, a film-type solar cell that has recently been provided to the market is used. For example, an Amorton battery manufactured by Sanyo Electric is suitable. This is made by attaching amorphous silicon to a plastic film, and is easy to install on a curved surface.

The electric power generated by the solar cell 2 is charged to the secondary battery 9 through the backflow prevention means 8 such as a Schottky diode. As shown in FIG. 1, the solar cell 2 is provided so as to surround the upper part of the case 1 for half a round. Therefore, when there is sunshine, the solar cell 2 always receives sunlight and generates electric power. It is sent to the secondary battery 9. As long as it is installed in the place where sunlight is irradiated, although the irradiated part of the solar cell 2 changes depending on the irradiation angle,
As long as it is sunny, any part receives sunlight.

The electric power stored in the secondary battery 9 is supplied to the light emitting diode 12 according to the circuit operation of the light emission control circuit 10 and the light emission signal generation circuit 11. Light emission control circuit 1
0 indicates the brightness by the detection output of the light detection means 3,
When it becomes dark to some extent, power is supplied from the secondary battery 9 to the light emission signal generation circuit 11.

As a result, the light emitting signal generating circuit 11 intermittently instantaneously supplies power to the light emitting diode 12 and causes the light emitting diode 12 to emit light intermittently instantaneously. This light emission mode is used to enhance the alerting effect and to reduce the consumption of the secondary battery to enhance the power saving effect. Extending this point, the amount of light emission is increased in the dark and poor visibility in the evening and dawn, rainy weather and cloudy weather, and the amount of light emission is reduced when sufficient visibility is obtained with a small amount of light emission such as late at night. Light emission control can also be performed. This is also performed by the light emission control circuit 10 variably controlling the light emission signal generation circuit 11 according to a signal indicating the brightness from the light detection means 3.

[0022]

According to the present invention, as described above, a light-emitting element and a film-like solar cell are provided in a water-tight case in which a lens is provided in a cylindrical case, and a secondary battery is provided according to the detection output of the light detecting means. Power is supplied to the light emitting elements to emit light, so that the light emitting elements can be easily installed at the roadside, and the roadside can be displayed with good visibility.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an external shape of an embodiment of the present invention.

FIG. 2 is a circuit diagram showing an internal circuit in the embodiment of FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 case 2 solar cell 3 light detection means 4 lens 5 support 6 band 7 protective cover 8 Schottky diode 9 secondary battery 10 light emission control circuit 11 light emission signal generation circuit 12 light emitting diode

Claims (3)

[Claims] 1. A body having a substantially cylindrical shape and an axial direction disposed laterally, and a leg continuously provided at the center of the outer peripheral surface of the body. Lenses are provided at both ends of the body. A watertight case, a light emitting element provided in the watertight case, and emitting light through the lens; a film solar cell provided so as to cover at least a part of an outer peripheral surface of the watertight case; Light detection means arranged on the outer peripheral surface of the watertight case to detect the brightness of the surroundings; a secondary battery provided in the watertight case to accumulate generated power of the solar cell; and detection of the light detection means A light-emitting road guide light, comprising: a control circuit for controlling power supply from the secondary battery to the light-emitting element when the surroundings are darkened by the output. 2. The light-emitting road guide light according to claim 1, wherein the control circuit is configured to intermittently supply power to the light-emitting element. 3. The light-emitting road guide light according to claim 1, wherein a water-tight transparent cover is provided on an outer periphery of the water-tight case.