JPH04194979A - Panel light emitting device - Google Patents

Abstract

PURPOSE:To eliminate the need for wiring from general feeders and to facilitate a mounting work as well as to allow long-term continuous use by providing a solar battery panel and a storage battery, etc. CONSTITUTION:A light emitting element 3 is embedded in the side face of a transparent solid plastic body 2 and an irregular reflection surface 4 having light transparency is formed on the base. A reflection surface is provided on the side face and the solar solar battery panel 6 is provided in the position below the irregular reflection surface 4. Further the storage battery 7 which is changed by the electromotive force of the solar battery panel 6 and a control circuit 8 which feeds electricity to the light emitting element 3 from the storage battery 7 are provided. The panel light emitting device which facilitates the mounting work, has excellent durability, is maintenance-free over a long period of time, is compact in size and is low in maintenance cost is obtd. in this way.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a surface emitting display device used for pedestrian/vehicle boundary lights, guide lights, etc. installed on road surfaces.

(Prior art) Conventional surface-emitting displays emit light from a point light source, such as a light bulb, from the side onto a transparent body with a diffusely reflecting surface with large irregularities on the bottom surface, and the bottom surface diffusely reflects the light to direct the light upward. A) was made so that the direction was uniform.

In conventional surface emitting displays, the point light source part is easily damaged by contact with people, cars, and other objects, and the display does not have very good durability against wind and rain.

In addition, point light sources used to be powered by general power supply lines or batteries, so in the case of a general power supply line, wiring work required time and cost, and in the case of batteries, the usage time was limited and replacement was necessary, so it lasted for a long time. There are various problems such as making it unsuitable for use.

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

(Means for Solving the Problem) The gist of the present invention that solves the problem is as follows: ■) A light emitting element such as an LED is embedded near or inside a side surface of a transparent solid plastic body, and the plastic body A light-transmitting diffusely reflective surface is formed on the bottom surface of the plastic body, a reflective surface is provided on the side surface of the plastic body, and a solar panel is provided below the diffusely reflective surface on the bottom surface of the plastic body. A surface emitting display characterized by comprising a storage battery that is charged with electricity and a control circuit that supplies power from the storage battery to a light emitting element.2) A large number of long grooves with a triangular cross section are provided on the bottom of the plastic body, and the surface thereof is roughened. 2. A surface emitting display according to claim 1, further comprising a diffused reflection surface.

(Function) In the present invention, when power is supplied to a light emitting element buried near or inside the plastic body, the light emitting element lights up or blinks, and the upward light of the light emitting element is transmitted upward to the plastic body. The downward light hits the diffusely reflective surface on the bottom or the reflective surface on the side of the plastic body and is repeatedly reflected randomly. As this type of reflection is repeated, most of the light is transmitted in one direction, and the light is evenly dispersed from the two sides of the same plastic body.

In the present invention, since the diffusely reflective surface on the bottom of the plastic body is translucent, sunlight incident from above passes through the diffusely reflective surface and hits the solar panel below, generating electricity and charging the storage battery. do. The storage battery then supplies power to the light-emitting element mentioned above. This eliminates the need for wiring from a general power supply line, and since electricity is supplemented by the same solar panel, it can be used continuously for a long period of time. Additionally, the solar panel is installed under the plastic body, which saves space and contributes to compactness.

In some embodiments of the present invention, a plurality of long grooves having a triangular cross section are provided on the bottom surface of the plastic body, and the surface thereof is roughened to form a diffused reflection surface. Since the diffusely reflecting surface has a high degree of random reflection of light, it enables surface light emission with excellent uniformity.

(Example) Embodiments of the present invention will be described below based on the drawings.

Fig. 1 is a partially cutaway plan view showing the embodiment, Fig. 2 is a partially cutaway bottom view, Fig. 3 is a partially cutaway front view, Fig. 4 is a partially cutaway side view, and Fig. 5 is a partially cutaway side view. FIG. 6 is a partially cutaway sectional view taken along line AA in FIG. 1, FIG. 6 is a partially cutaway sectional view taken along line BB in FIG. 1, and FIG. 7 is an explanatory view showing the state of use.

In the surface emitting display 1 of this embodiment, a light emitting element 3 is embedded in the side surface of a transparent solid plastic body 2, a diffusely reflective surface 4 having translucent properties is formed on the bottom surface, and a reflective surface 5 is formed on the side surface. established,
A solar panel 6 is provided below the diffused reflection surface 4, and a storage battery 7 that is charged by the electromotive force of the solar cell/channel 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 to the light emitting element 3 from the storage battery 7, the light emitting element 3 lights up or blinks, but the light hits the diffuse reflection surface 4 and the reflective surface and repeats random reflections, transmits upward to the plastic body 2, and is uniformly emitted from the upper surface 9. Diverge.

Since the diffused reflection surface 4 on the bottom of the plastic body 2 has translucency, sunlight incident from above passes through the diffused reflection surface 4, generates electricity from the solar cell (6e) below, and connects the storage battery 7. When illumination is required, such as at night, the control circuit 8 operates and starts supplying power to the light emitting element 3.Such switching between charging and power supply is done automatically by sensing the surrounding brightness. This is normal, but manual switching is also possible.

The diffuse reflection surface 4 is provided with a large number of long grooves 10 having a triangular cross section and has a rough surface, so that the randomness of the diffuse reflection of light is high, and the uniformity of light emission from the upper surface is also excellent.

Since the surface emitting display 1 of this embodiment is equipped with a solar panel 6, a storage battery 8, etc., there is no need for wiring from the ship's power line, and installation work is easy. It is also possible to use it continuously for a long period of time.

In this embodiment, as shown in FIG. 7, the surface emitting display 1 is buried in the boundary between the sidewalk 11 and the roadway 12 and used as a boundary indicator light, but it can be widely applied to other surfaces as well. .

In the surface emitting display 1 of this embodiment, if a colored layer such as a colored tape surface is provided on the reflective surface 5, it is possible to emit various colors corresponding to the colored layer. Also, 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, installation (= 1 construction work) is easy, excellent in durability,
It is possible to provide a surface emitting display that does not require maintenance for a long period of time, is compact in size, and has low maintenance costs.

[Brief explanation of the drawing]

Fig. 1 is a partly cutaway plan view showing the embodiment, Fig. 2 is a partially cutaway bottom view, Fig. 3 is a partially cutaway front view, Fig. 4 is a partially cutaway side view, and Fig. 5 is the same partially cutaway side view. FIG. 6 is a partially cutaway sectional view taken along line AA in the figure, FIG. 6 is a partially cutaway sectional view taken along line BB in FIG. 1, and FIG. 7 is an explanatory view showing the state of use. 2° plastic body 3: Light emitting element 4: Diffuse reflective surface 5: Reflective surface 6: Solar panel 7゛ Storage battery 8: Control circuit 9: Top surface 10: Long groove 11゛ Sidewalk 12: When on a roadway Fujikoyo Co., Ltd.
Director Toshima Ministry 4th Division
Ot. Ward

Claims (1)

[Claims] 1) L near or inside the transparent solid plastic body
A light-emitting element such as an ED is embedded, a diffusely reflective surface with light transmission is formed on the bottom of the plastic body, a reflective surface is provided on the side of the plastic body, and a reflective surface is provided below the diffusely reflective surface on the bottom of the plastic body. A surface emitting display comprising a solar battery panel, a storage battery that is charged by the electromotive force of the solar battery panel, and a control circuit that supplies power to a light emitting element from the storage battery. 2) The surface emitting display according to claim 1, wherein a plurality of long grooves having a triangular cross section are provided on the bottom surface of the plastic body, and the surface thereof is roughened to form a diffusely reflecting surface.