JPH0731474B2 - Surface emitting indicator - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a surface emitting display used for a pedestrian road boundary light, a guide light, etc. installed on a road surface.

(Prior Art) A conventional surface-emitting display irradiates a transparent body having a highly uneven diffuse reflection surface on the bottom surface with light from a point light source such as a light bulb from the side, and diffuses the light upward by the diffuse reflection of the light from the bottom surface. It was intended to be evenly oriented toward.

In the conventional surface emitting display, the point light source part is easily damaged by contact with a person, car, or other object, and the durability against wind and rain is not so good.

Also, since the power source of the point light source used a general power supply line or a battery, it takes time and cost for wiring work in the case of a general power supply line, and in the case of a battery, the usage time is limited and replacement is also required for a long time. There are various problems such as that it is not suitable for use.

(Problem to be Solved by the Invention) The problem to be solved by the present invention is that installation work is easy,
An object of the present invention is to provide a surface emitting display which has excellent durability, requires no maintenance for a long time, has a compact size, and has a low maintenance cost.

(Means for Solving the Problem) The gist of the present invention which has solved the problem is as follows: 1) LE near the side surface or inside of a transparent solid plastic body.
A light-emitting element such as D is embedded, a light-transmitting diffuse reflection surface is formed on the bottom surface of the plastic body, a reflection surface is provided on the side surface of the plastic body, and it is located below the diffuse reflection surface on the bottom surface of the plastic body. A surface emitting display characterized by being provided with a solar cell panel, a storage battery charged by the electromotive force of the solar cell panel, and a control circuit for supplying power to a light emitting element from the storage battery 2) A triangular cross-section on the bottom surface of a plastic body The surface emitting display according to claim 1, wherein a large number of long grooves are provided, and the surface thereof is a rough surface to form a diffuse reflection surface.

(Operation) In the present invention, when power is supplied to a light emitting element embedded near or inside the side surface of the plastic body, the light emitting element lights up or blinks, and upward light of the light emitting element is transmitted above the plastic body. The downward light strikes the diffuse reflection surface on the bottom surface or the reflection surface on the side surface of the plastic body, and repeats random reflection. While such reflection is repeated, most of the light is transmitted upward and the light is uniformly diverged from the upper surface of the plastic body.

In the present invention, since the irregular reflection surface of the bottom surface of the plastic body has a light-transmitting property, sunlight incident from above passes through the irregular reflection surface and hits the solar cell panel below to generate electricity to charge the storage battery. . Then, power is supplied from the storage battery to the light emitting element. This eliminates the need for wiring or the like from the general power supply line and replenishment of electricity by the solar cell panel, which enables continuous use for a long period of time. In addition, the solar cell panel is installed below the plastic body, which saves space and contributes to downsizing.

In the present invention, a large number of long grooves having a triangular cross section are provided on the bottom surface of a plastic body, and a diffused reflection surface is formed by using the surface as a rough surface. Since the irregular reflection surface has high randomness of irregular reflection of light, it is possible to perform surface emission with excellent uniformity.

(Example) Hereinafter, the Example of this invention is described based on drawing.

FIG. 1 is a partially cutaway plan view showing an embodiment, FIG. 2 is a cutaway bottom view of the same part, FIG. 3 is a cutaway front view of the same part, FIG. 4 is a side view of the same part cutaway, and FIG. 6 is a partially cutaway sectional view taken along the line AA in FIG. 6, FIG. 6 is a partially cutaway sectional view taken along the line BB in FIG. 1, and FIG. 7 is an explanatory view showing a use state.

In the surface emitting display 1 of the present embodiment, the light emitting element 3 is embedded in the side surface of the transparent solid plastic body 2, the diffuse reflection surface 4 having the light transmitting property is formed on the bottom surface, and the reflection surface 5 is formed on the side surface. Provided,
A solar cell panel 6 is provided below the diffuse reflection surface 4, and a storage battery 7 that is charged by the electromotive force of the solar cell panel 6 and a control circuit 8 that supplies power to the light emitting element 3 from the storage battery 7 are provided.

When power is supplied from the storage battery 7 to the light emitting element 3, the light emitting element 3 is turned on or blinks, but the light hits the irregular reflection surface 4 and the reflection surface and repeats random reflection, and is transmitted above the plastic body 2 and uniformly from the upper surface 9. Diverge.

Since the irregular reflection surface 4 on the bottom surface of the plastic body 2 has a light-transmitting property, sunlight incident from above passes through the irregular reflection surface 4 and hits the solar cell panel 6 below it to generate electricity to charge the storage battery 7. To do. Then, when it becomes necessary to illuminate at night or the like, the control circuit 8 operates to start feeding power to the light emitting element 3. Such switching between charging and power feeding is normally performed automatically by sensing the ambient brightness, but can also be switched manually.

Since the irregular reflection surface 4 has a large number of long grooves 10 each having a triangular cross section and the surface thereof is a rough surface, the irregular reflection of light is highly random, and the surface emission of the upper surface 9 is excellent in uniformity.

Since the surface emitting display 1 of this embodiment includes the solar cell panel 6 and the storage battery 8 and the like, wiring from the general power supply line is unnecessary and installation work is easy. In addition, it can be used continuously for a long period of time.

In this embodiment, as shown in FIG.
It is buried in the boundary between 11 and road 12 and used as a boundary indicator light, but it can be widely applied to the other surface.

In the surface emitting display 1 of the present embodiment, if the reflective surface 5 is provided with a colored layer such as a colored tape surface, it is possible to emit various colors corresponding thereto. In addition, the light emitting element 3
It is also possible to emit colored light by using a colored one.

(Effects of the Invention) According to the present invention, it is possible to provide a surface emitting display which is easy to install, has excellent durability, does not require maintenance for a long period of time, has a compact size, and has low maintenance cost.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view showing an embodiment, FIG. 2 is a cutaway bottom view of the same part, FIG. 3 is a cutaway front view of the same part, FIG. 4 is a side view of the same part cutaway, and FIG. 6 is a partially cutaway sectional view taken along the line AA in FIG. 6, FIG. 6 is a partially cutaway sectional view taken along the line BB in FIG. 1, and FIG. 7 is an explanatory view showing a use state. 1: Surface emitting display, 2: Plastic body 3: Light emitting element, 4: Diffuse reflection surface 5: Reflection surface, 6: Solar cell panel 7: Storage battery, 8: Control circuit 9: Top surface, 10: Long groove 11: Sidewalk, 12 :roadway

Claims (2)

[Claims] 1. A light-emitting element such as an LED is embedded near or inside a side surface of a transparent solid plastic body, and a diffuse reflection surface having a light-transmitting property is formed on the bottom surface of the plastic body. A reflecting surface is provided, a solar cell panel is provided below the irregular reflection surface on the bottom surface of the plastic body, and a storage battery that is charged by the electromotive force of the solar cell panel and a control circuit that supplies power to the light emitting element from the storage battery are provided. Characteristic surface emitting display. 2. A surface emitting display according to claim 1, wherein a plurality of elongated grooves having a triangular cross section are provided on the bottom surface of the plastic body, and the surface is roughened to form a diffuse reflection surface.