JPH09101753A - Light emitting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the light emitting device which saves electric power by turning on and off intermittently and appears to emit light continuously by providing a layer of a light emitting agent consisting of a material which continues to emit light even after illumination light is ceased on the top surface of a wall side. SOLUTION: A light emission body storage hole 11 is formed in a light emitting body fitting member 10 at a specific distance from the surface 10a of the fitting member 10, and a light emitting body 1 is stored and fixed. The peripheral wall surface 12a of a light passing hole 12 is coated with paint containing the light emitting agent 13 made of the material which continues to light even after illumination light is ceased once the light is emitted. The sunshine reaches the solar battery 5 of the light emitting body 1 through the light passing hole 12 to charge a secondary battery 7. In the night, a light emission lamp 6 turns on and off intermittently and repeatedly (about 1 second). The light emitting lamp 6 is turned off a certain time (about 1 second) is turned off, but the light emitting agent 13 emits the light as shown by an arrow B and this light lasts until the light emitting lamp 6 turns on again. Consequently, although the light emitting lamp 6 blinks, but an observer can see the light from the light emitting agent 13 continuously.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light emitting device.

[0002]

2. Description of the Related Art Conventionally, a light emitting element for intermittently turning on and off a light emitting diode by using a solar cell as a power source is provided on a road, a wall surface of a building, a pole that divides a parking lot from a sidewalk, and the like. Some have been designed to evoke or have a decorative effect.

Conventionally, as an example of this light emitting body, there is one having a structure as shown in FIGS. In FIG. 5 and FIG. 6, 1 is a light emitting body, and 2 is a case. The case 2 has a convex surface 2a and an inner surface having an uneven surface 2b for diffusing light.
And a front portion 2c, a body portion 2d and a bottom portion 2e,
These are integrally formed of a synthetic resin material, and the storage chamber 3
Is sealed. Moreover, at least the front surface portion 2c is formed of a transparent material.

In the storage chamber 3, a control circuit board 4 having an integrated circuit (IC), resistors, capacitors, etc., and the board 4 are provided.
A light emitting lamp (high brightness LED) 6 including a solar cell 5 and a light emitting diode provided on the upper side, and a secondary battery 7 provided on the back side of the substrate 4 are incorporated.

In operation, the solar battery 5 first generates power by sunlight in the daytime, and the secondary battery 7 is charged and stored. At dusk, the built-in sunset sensor supplies power to the light emitting lamp 6 from the secondary battery 7 via the control circuit, and the light emitting lamp 6 blinks intermittently. Then, when the sun rises, the power supply to the light emitting lamp 6 is stopped by the sunset sensor, and the light emitting lamp 6 remains off.

[0006]

DISCLOSURE OF INVENTION Problems to be Solved by the Invention
Is to discharge the limited electricity charged in the secondary battery 7 by the sunlight in the daytime gradually during a long night to turn on the light emitting lamp 6, so that the light emitting lamp 6 at night is not continuously turned on.
It is desirable to intermittently, for example, repeat lighting and extinguishing at intervals of 1 second to mitigate the drop in the battery voltage due to discharge, and such lighting and blinking are generally used.

However, depending on the place of use and purpose of use,
There are cases where it is desirable to turn on continuously instead of turning on and off intermittently, but when it is turned on continuously, the battery voltage drops rapidly due to discharge, and there is a problem that light emission does not continue until the rising sun and turns off at midnight. .

It is therefore an object of the present invention to provide a light emitting device which intermittently lights and extinguishes the above-mentioned light emitting body to save power and at the same time, to emit light so as to continuously light up in appearance. .

[0009]

In order to solve the above-mentioned problems, the invention according to claim 1 provides a light-emitting body (1) for flashing a light-emitting lamp in a member (10) by electricity stored by a solar cell. ), The front surface of the light emitting body (1) is provided with a wall surface (12a) which can be seen from the front of the light emitting body (1) by the light emitted from the light emitting lamp to the outside of the light emitting body, and the wall surface (12a). The surface of (12a) is provided with a layer of a luminescent agent (13) made of a substance that emits light even after the irradiation light is extinguished when the surface is irradiated with light.

The invention according to claim 2 is a light emitting device in which the member (10) according to claim 1 is a tile. The invention of claim 3 is a light-emitting device, wherein the luminescent agent (13) according to claim 1 or 2 is a fluorescent agent.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention shown in FIGS. 1 and 2 will be described. 10 is a member to which a luminous body is attached,
For example, it is a member such as a road, a sidewalk, a wall surface of a building, a pole that divides a parking lot from a sidewalk portion, a car stop, a seawall, or the like to which a light emitter is to be attached.

Reference numeral 11 denotes a luminous body housing hole formed in the member 10, which is formed at a predetermined distance from the surface 10a of the member 10 into the member. A light emitter 1 having the structure and operation shown in FIG.

Reference numeral 12 is a light passage hole formed in the front portion of the luminous body housing hole 11, and a peripheral wall surface 12a thereof is inclined from the front end edge of the luminous body housing hole 11 toward the front in a trumpet shape. The inclination angle α of the peripheral wall surface 12 a is such that light scatteredly emitted from the light emitting lamp 6 of the light emitting body 1 to the front side of the light emitting body 1 through the uneven surface 2 b hits the peripheral wall surface 12 a from the front side of the light emitting body 1. Is set to an angle of inclination that can be visually recognized. The inclination angle α is set arbitrarily according to the installation position of the light emitter 1, the viewing direction, etc., and in the illustrated embodiment, it is about 45 with respect to the axis of the light emitter 1.
Set to degree.

Numeral 13 is a luminescent agent composed of a substance which emits light even after the irradiation light is extinguished, for example, a substance generally known as a fluorescent agent is used.
Then, the luminescent agent is mixed with paint and applied on the peripheral wall surface 12a of the light passage hole 12. Next, the operation will be described.

In the daytime, sunlight reaches the solar cell 5 of the light emitting body 1 through the light passage hole 12 and is charged in the secondary battery 7. At night, the light-emitting lamp 6 is turned on and off intermittently (for about 1 second) as described above.

When the light-emitting lamp 6 is turned on, the light is diffusely reflected by the uneven surface 2b and radiated diffusely from the front surface portion 2c to the outside of the light-emitting body 1, and a part of the light reaches the viewer and the light is emitted. The other part of the light is recognized and strikes the luminescent agent 13 applied to the peripheral wall surface 12a of the light passage hole 12 as shown by the arrow A in FIG. 1, and the light is emitted from the luminescent agent 13.

The light-emitting lamp 6 is turned off after a fixed time (about 1 second), but the light-emitting agent 13 emits light as shown by an arrow B in FIG. You can continue to emit until you do. Therefore, although the light emitting lamp 6 is blinking, the viewer can continuously see the light from the light emitting agent 13.

The member 10 is a member on which a light-emitting body is desired to be installed, such as a road or a sidewalk as described above. However, as shown in FIGS. 3 and 4, the member 10 is a tile of a predetermined size, and this tile is used. Alternatively, the light-transmitting hole 12, the luminescent agent 13 and the like as described above may be formed, and the light-emitting body 1 may be provided in the inner portion thereof as described above, and the tile may be stretched to a necessary place.

[0019]

As described above, according to the present invention, the light-emitting lamp of the light-emitting body can be intermittently turned on and off to save power to continuously emit light at night. Light can be emitted from the luminescent agent while the light is off, and the viewer can see a continuous light emission state despite the blinking of the light emitting lamp. Therefore, it is effective as a light emitting device when it is desired to continuously turn on the caution light and the decoration light at night.

Further, if the members are formed into tiles, it is possible to provide a light emitting tile in which the above-mentioned light emitting body can be easily installed in a required place.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a surface view of the same.

FIG. 3 is a side sectional view in which the present invention is applied to a tile.

FIG. 4 is a plan view of the same.

FIG. 5 is a side sectional view of a light emitting body.

FIG. 6 is a surface view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Light-emitting body 5 ... Solar cell 6 ... Light-emitting lamp 7 ... Secondary battery 10 ... Member 12 ... Light passing hole 12a ... Wall surface 13 ... Luminescent agent

Claims (3)

[Claims] 1. A member (10) is provided with a light emitting body (1) for blinking a light emitting lamp by electricity stored by a solar cell, and a light emitting body (1) is provided on a front surface of the light emitting body from the light emitting body to the outside of the light emitting body. A wall surface (12a) is formed which can be seen by the emitted light and is visible from the front of the light emitting body (1).
The surface of a) is a luminescent agent (13) made of a substance that emits light even after the irradiation light disappears when the light is irradiated.
A light-emitting device comprising the following layer. 2. A light-emitting device, wherein the member (10) according to claim 1 is a tile. 3. A light emitting device, wherein the luminescent agent (13) according to claim 1 or 2 is a fluorescent agent.