JP2000345522A - Solar cell type luminous road rivet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To protect a solar cell cover from traffic, prevent a lowering of light- collecting power and prolong the life of a solar cell type luminous road rivet by attaching a partition frame having a high rigidity inside the case of the solar cell type luminous road rivet. SOLUTION: A partition frame 31 for protecting a solar cell type cover 41 is installed inside a case 21 of a solar cell type luminous road rivet to be installed on the surface of a road. A partition frame 31 is formed of an outer frame at an outer peripheral portion in contact with the inner periphery of the case 21 and a grid-shaped partition separating the inside of the outer frame and is produced of a raw material having a high rigidity such as aluminum cast iron. A partition frame 31 attached to the inside of the case 21 prohibits the contact of traffic on the road to the solar cell cover 41, thereby the surface of the solar cell cover 41 is prevented from being scratched resulting in a drop in the light-collecting power and the life of the solar cell type luminous road rivet is prolonged. Also, since the strength of the solar cell cover 41 can be reduced, the thickness of the solar cell cover 41 can be reduced or its shape can be changed so that the light collecting effect can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solar cell type light emitting road tack which is installed on a road surface and emits light by electric power generated by a solar cell.

[0002]

2. Description of the Related Art Road studs, which are installed at a separation zone or an intersection at the center of a road and emit light to alert a driver, conventionally require wiring work under the road surface to supply power. To emit light. However, even in consideration of the frequency of road construction and the like, wiring management is often inefficient in terms of time and economy. Under these circumstances, in recent years, road tacks and road signs that operate independently and incorporate solar cells as power sources have become widespread.

FIG. 1 is a perspective view of a road tack that emits light using a solar cell as a power source (hereinafter referred to as a solar cell type light emitting road tack). The solar cell type light emitting road stud 11 has a configuration in which a solar light receiving portion 12 is provided on an upper surface and a light emitting portion 13 is provided on four side surfaces. A solar cell 14 is arranged in the solar light receiving unit 12. The solar battery 14 generates electric power when receiving sunlight, is supplied to a capacitor (not shown) built in the road tack 11, and the light emitting unit 13 emits light based on the electric power stored in the capacitor. Further, a part of the electric power generated by the solar cell 14 is directly supplied to the light emitting unit 13.

FIG. 2 is a cross-sectional view of a portion above the road surface of the solar cell type light emitting road stud 11 of FIG. The case 21 is made of a casting such as aluminum, and the solar light receiving unit 12 is shaped like a saucer. A depression 22 is provided at the bottom of the solar light receiving unit 12, and the solar cell 14 is installed so as to fit in the depression 22. A wiring 15 extends from a lower portion of the solar cell 14, and the electric power generated by the solar cell 14 is transferred to a capacitor (not shown) or a light emitting unit 13 installed below the road surface.
To supply. A solar cell cover 23 is provided on the solar light receiving section 12 to protect the solar cells 14 from passing objects such as vehicles passing on a road. Solar cell cover 23
Materials such as polycarbonate resin are used for
It is transparent and can transmit sunlight to the solar cell 14.

[0005]

The surface of the solar cell cover located at the sunlight receiving portion of the road studs is scratched by the above-mentioned stepping on the passing object. As a result, the light transmittance of the solar cell cover is reduced, so that the amount of sunlight reaching the solar cell is reduced. As a result, the light collecting ability is reduced, and the life of the solar cell type light emitting road tack is shortened. As a method of compensating for the decrease in the light-collecting ability of the solar cell, use of a solar cell having high power generation efficiency can be cited, but the cost of the solar cell itself is high because the cost is high. In addition, the cost of the solar cell cover itself is high, so that the cost is reduced.

Conventionally, in places where sunshine conditions are poor such as tunnels and san'in, the number of solar cells has been increased to improve the light-collecting effect of sunlight. However, the cost increases and the size of the road studs increases. Therefore, there is a problem that installation on a road becomes difficult.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and provides a solar cell type light emitting road stud which prevents damage to a solar cell cover, improves life, and enhances light collecting ability. The purpose is to do.

[0008]

A solar cell type light emitting road tack according to the present invention comprises: a solar cell; a solar cell cover for covering the solar cell; and a light emitting portion which emits light by electric power generated by the solar cell. A case in which the solar cell and the solar cell cover and the light emitting unit can be mounted, and in a solar cell type light emitting road stud installed on a road surface of a road, contact between the solar cell cover and a traffic object on a road is performed. It is characterized by having a partition frame attached to the case to prevent the solar cell cover and protecting the solar cell cover.

Further, the partition frame has a reflector for reflecting sunlight to the solar cell cover.

[0010] Further, the case is provided with a receiving portion for receiving the partition frame, and a load of a passing object through the partition frame is not applied to the solar cell cover.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

Embodiment 1. FIG. 3 is a perspective view and an example of a top view of a partition frame 31 installed on a solar cell type light emitting road tack to protect a solar cell cover. Partition frame 3
Reference numeral 1 denotes a configuration that can be fitted into the solar light receiving portion of the solar cell type light emitting road stud. Hereinafter, the outer peripheral portion of the partition frame 31 is referred to as an outer frame, and the internal partition portion is referred to as a partition. FIG. 4 is a cross-sectional view of a portion on the road surface of the solar cell type light emitting road tack according to the first embodiment of the present invention (in the following drawings, the same devices and means as those in FIG. 2 are denoted by the same reference numerals). Description is omitted). The partition frame 31 is installed above the solar cell cover 41, and prevents the solar cell cover 41 from directly contacting a passing object. In the partition frame 31 shown in FIG. 4, both left and right ends correspond to the outer frame, and the center corresponds to the partition. According to this embodiment, the partition frame 31 comes into direct contact with the traffic on the road, and the solar cell cover 4
1 can be prevented from being damaged and the life of the solar cell type light emitting road tack can be extended. Also, in a road cleaning operation such as snow removal, the possibility of damaging the solar cell cover 41 is reduced, and the same effect can be obtained.

The partition frame 31 is preferably made of a highly rigid material in consideration of the role of protecting the solar cell cover 41 from damage. Although the partition frame 31 of the first embodiment has partitions in a lattice shape, if the solar cell cover 41 does not directly contact a vehicle or the like,
Considering the size of the contact surface between the solar cell type light emitting road stud and the passing object, the minimum partition may be provided in the partition frame in a free arrangement. Further, the partition frame 31 has a shape without an outer frame,
That is, a configuration having only a partition may be used.

Embodiment 2 FIG. 5 is a cross-sectional view of a solar cell type light emitting road tack on a road surface according to Embodiment 2 of the present invention. Hereinafter, the configuration of the solar cell type light emitting road stud according to the second embodiment will be described focusing on differences from the first embodiment.

This embodiment is characterized in that the frame of the partition frame 51 and the side surface of the partition form an acute angle with respect to the solar cell cover 41, and the side surface is provided with a reflection plate 52. According to this embodiment, the partition frame 51
The sunlight radiated to the side surface is reflected on the solar cell cover 41 by the reflection plate 52, and the amount of sunlight collected by the solar cell 14 is increased as compared with the related art, so that the sunlight collecting effect is improved. .

Embodiment 3 FIG. 6 is a sectional view of a solar cell type light emitting road stud on a road surface according to Embodiment 3 of the present invention. Hereinafter, the configuration of the solar cell type light emitting road stud of the second embodiment will be described focusing on differences from the first or second embodiment.

In this embodiment, the case 21 has a receiving portion 62 that can receive the partition frame 61,
When the partition frame 61 is mounted on the case 21, the partition frame 6
1 is fitted into the receiving portion 62. The partition frame 61 comes into contact with the case 21 via the receiving portion 62, and the load of the passing object received by the partition frame 61 is applied to the case 21. According to this embodiment, solar cell cover 6
3 is reduced, and the strength required for the solar cell cover 63 is reduced.
3 can be made thinner, or the shape of the solar cell cover 63 can be changed. By reducing the thickness of the solar cell cover 63, cost reduction and weight reduction of the solar cell type light emitting road tack can be expected. Also, the solar cell cover 63
Since the light transmittance of the solar cell cover 63 is improved by reducing the thickness of the solar cell, the light-collecting effect of the solar cell 14 increases as a result. The effect can be improved. Solar cell cover 6
3 is to enhance the solar light condensing effect of the solar cell 14,
For example, it is preferable to form a convex lens.

In the first to third embodiments,
The material of the case 21 of the solar cell type light emitting road tack may be other than a casting such as aluminum.

Although the solar-powered light-emitting road studs of the first to third embodiments protrude from the road surface, the effects of each embodiment can be obtained even if they are buried in the road. Can be.

[0020]

As described above, according to the solar cell type light emitting road stud according to the present invention, by mounting the partition frame for protecting the solar cell cover, damage to the solar cell cover is prevented, and Since the light-collecting effect can be maintained, the effect of extending the life of the solar cell type light emitting road tack is exhibited.

Further, by providing a reflecting surface for reflecting the sunlight to the solar cell cover in the partition frame, the effect of condensing the sunlight is improved. Further, even in a place with poor sunshine conditions, the solar cell type light emitting road tack can be used without increasing the number of solar cells.

In addition, the strength required for the solar cell cover is reduced by installing the solar cell type light emitting road stud case so that the load of the passing object through the partition frame is applied to the case.
As a result, the thickness of the solar cell cover can be reduced, and the shape of the solar cell cover can be changed, so that the effect of condensing sunlight is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of a conventional solar cell type light emitting road stud 11;

FIG. 2 is a cross-sectional view of a portion on a road surface of a conventional solar cell type light emitting road tack.

FIG. 3 is a perspective view and a top view of a partition frame 31 according to the first embodiment of the present invention.

FIG. 4 is a cross-sectional view of a portion on a road surface of the solar cell type light emitting road tack according to the first embodiment of the present invention.

FIG. 5 is a cross-sectional view of a portion on a road surface of a solar cell type light emitting road tack according to Embodiment 2 of the present invention.

FIG. 6 is a cross-sectional view of a portion on a road surface of a solar cell type light emitting road tack according to Embodiment 3 of the present invention.

[Explanation of symbols]

12 solar light receiving section, 13 light emitting section, 14 solar cell,
15 Power supply wiring, 21 case, 23, 41, 63
Solar cell cover, 31, 51, 61 Partition frame, 52 Reflector, 62 Receiver.

Continued on the front page (72) Inventor Tomomi Nagashima 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Corporation F term (reference) 2D064 AA03 AA22 CA05 EB23 EB36 GA03 HA13

Claims (3)

[Claims] 1. A solar cell, a solar cell cover covering the solar cell, a light emitting unit that emits light with electric power generated by the solar cell, and a case to which the solar cell, the solar cell cover, and the light emitting unit can be attached. A solar cell type light emitting road stud installed on a road surface of a road, wherein the solar cell cover is attached to the case to prevent contact between the solar cell cover and a passing object on a road, and protects the solar cell cover. A solar cell type light emitting road stud, characterized by having a partition frame to be formed. 2. The solar cell type light emitting road stud according to claim 1, wherein the partition frame has a reflector for reflecting sunlight to the solar cell cover. 3. The case according to claim 1, wherein a receiving portion for receiving the partition frame is provided in the case, and a load of a passing object via the partition frame is not applied to the solar cell cover. 3. The solar cell type light emitting road stud according to 2.