JP2003092008A - Light emitting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting device suitable for a lighting an outer wall lighted by light emitting diodes (LED) using a solar cell or the like as a power source. SOLUTION: A high performance rechargeable battery 4 is charged by the electric power generated by a solar cell 3 adhered to the back surface of a glass plate 1 or the like, and light emitting diodes 2 are lighted by supplying the electric power through a light controller 5 as required. The light emitted from the light emitting diodes 2 is irradiated into the glass plate 1, and guided outward by a reflection plate 6, and the glass plate is made to emit light. The light emitting glass plate is used for an outer wall, a paving stone, or the like.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a light emitting diode (L
ED) using a light emitting device, especially building materials such as outer walls,
The present invention relates to an improvement of a light emitting device that can be used as a paving stone, a guide plate, and the like, and can also be an energy-saving type by using a solar cell as a power source.

[0002]

2. Description of the Related Art Lighting for a building outer wall has hitherto been required to use a light emitting device which consumes a large amount of power from a commercial power system. Further, in order to make the paving stones emit light, it was necessary to light from below the paving stones with a light emitting device that consumes a large amount of power.

As described above, a technique for illuminating a building, a bridge, or the like so as to stand up at night is often adopted, but when illuminating an outer wall or the like with a conventional lighting device, a lot of electric power is required (a lot of energy is consumed). Therefore, in order to obtain the electric power from the solar cells, a large number of solar cells were required. In particular,
When trying to obtain the above-mentioned electric power from a solar power generation system that is not grid-connected to commercial electric power, a large-scale storage battery facility is required, so that its practical application has been difficult.

[0004]

Therefore, it can be considered to use a light emitting diode (LED) as a light emitting device used in a lighting device. Unlike light bulbs that use ordinary filaments, light-emitting diodes have the advantages that they do not have the problem of bulb burnout due to filament breakage, have a long life, require little maintenance work, and have low power consumption. is there. Therefore, the light emitting diodes are used today mainly as outdoor night illumination devices such as road signs and various guide plates by utilizing their characteristics.

The light-emitting diode has the advantages as described above, but due to its nature, it has a strong directivity or straightness, so that when it is used for illuminating a guide plate or the like, the backlight becomes local and the illuminance of the peripheral portion is high. However, there is a drawback that the illumination area becomes non-uniform, such as being extremely reduced. To improve this, it is possible to use more light emitting diodes, but there is a problem in that the cost of the entire device increases and power consumption increases.

The object of the present invention is to improve the above-mentioned problems of the prior art by using a light emitting diode having a strong directivity and low power consumption as a light source and enabling the use of a solar cell or the like as its power source. , The advantages of light emitting diode are effectively exerted, and the labor for maintenance and inspection is greatly reduced.
An object of the present invention is to provide a light emitting device which has a long life and is highly durable and which itself can be used as a building material for outer walls, paving stones and the like.

[0007]

In order to achieve the above object, a light emitting device of the present invention comprises at least one light emitting diode and a transparent or semitransparent plate-like member having the light emitting diode arranged at an end thereof. , And the plate-shaped member has a reflection portion for reflecting the incident light from the light-emitting diode to guide it to the outside.

In the present invention, a solar cell may be used as a power source for the light emitting diode. In this case, it may have a storage battery charged by the solar cell, and the storage battery may be connected to the light emitting diode. Further, the solar cell may be bonded to one flat surface of the plate member.

Further, in the present invention, the plate-shaped member has an internal space, the reflecting portion is formed on an inner surface of the internal space, and the light emitting diode has an end of the plate-shaped member corresponding to the internal space. It may be configured to be arranged in a section. In this case, the reflecting portion may be composed of a plurality of transparent or semi-transparent protrusions protruding toward the inside of the internal space.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The light emitting device of the present invention can be used, for example, as a unit building material for an outer wall of a building, and the outer wall itself can emit light, so that a lighting device for illuminating the building at night is completely unnecessary. . In this case, in the light emitting device of the present invention, preferably, a glass plate having a thickness having a predetermined strength is used as the plate member, and a solar cell serving as a power source of the light emitting diode is bonded to the back surface of the glass plate. A light emitting diode is arranged at one end of the glass plate, and the storage battery is charged with the electric power obtained from the solar battery during the daytime, and the light emitting diode is energized by the above electric power at night. .

Therefore, with this structure, it is possible to construct an energy-saving light emitting outer wall that can light up the outer wall at night without using an outer wall lighting device using commercial power.

Moreover, by using color solar cells, it is possible to secure the design as an outer wall material even in the daytime, and at night, it is possible to combine various color LEDs and to emit light at an arbitrary time interval. It is possible to easily obtain a luminescent outer wall that stands out, and the running cost thereof can be low.

On the other hand, the light-emitting device of the present invention can be used as a light-emitting solar cell glass having the above-described structure for other purposes, for example, by providing a function as a paving stone (abrasion resistance, waterproofness, etc.), and It can also be realized.

FIG. 1 shows one structural unit of a building material for a light emitting outer wall as an embodiment of the light emitting device of the present invention. In the figure, 1
Is a glass plate having a predetermined strength, 2 is a light emitting diode (LED), 3 is a color solar battery cell, 4 is a high performance storage battery, 5 is an LED lighting controller, and 6 is a high performance reflector.

The solar cell 3 is a flat surface portion of the glass plate 1,
For example, it is adhered to the back surface 1b, and the electric power obtained from the adhesive is charged into the storage battery 4, and the storage battery 4 turns on the lighting controller 5 when necessary.
The light is supplied to the light emitting diode 2 through the light emitting device to emit light.

In the conventional light-up of the outer wall by the LED, the outer wall is illuminated with the LED light emission to illuminate. However, in the present invention, the LED light is illuminated by the glass plate 1 constituting the outer wall.
The inside glass is irradiated to cause the outer wall glass plate 1 itself to emit light.

One or a plurality of light emitting diodes 2 are arranged at one end 1a of the glass plate 1, and a high performance reflecting plate 6 is provided at each end of the glass plate 1 to improve the light emitting effect.
In order to make light emission on the surface 1c of the glass plate 1 effective, etching treatment or screen printing is performed to form a reflection portion to enhance the light emission effect. Further, the color solar battery cell 3 adhered to the glass plate 1 is also LE.
By adding a function of scattering and emitting D light, the light emitting effect can be further improved.

Further, the light emitting diode 2 may be selectively arranged in various colors or full colors, if necessary.
Further, if the lighting controller 5 controls the lighting time interval of the light emitting diode 2 to change the light emitting interval, the power consumption reducing effect can be enhanced, or the surface light emitting effect of the glass plate 1 can be changed. It is possible to construct an outer wall having various design characteristics by processing.

According to the configuration of the above embodiment, it is possible to realize a light-emitting building material in which a solar power generation system, which is a representative of natural energy utilization, and a light-emitting diode, which is a low-power-consumption light-emitting source, are combined, and electricity is stored without a grid connection with commercial power. The outer wall / paving stones can be illuminated.

Conventionally, even in the case of illumination using an LED as a light emitting source, a method of directly irradiating the outer wall with the light emitted from the LED to illuminate the outer wall, or a method in which a large number of LEDs are embedded in the outer wall or the like is used.
Although the method of causing the ED to emit light is adopted, in the above-described embodiment, the glass plate internally emits light by the LED light source, and the outer wall itself constituted by the glass plate emits light. As described above, according to the above-described embodiment, the conventional lighting method that consumes a lot of electric power is completely changed, the lighting power is secured by the solar cell, and the lighting that raises the building in a form in which the outer wall itself emits light, or a paving stone It is possible to perform lighting by causing itself to emit light so as to emerge. Specifically, 90 cm x 90 c
Approximately 20-40 W (100-200 for bright lighting) according to conventional lighting technology for faintly bright lighting in an area of m
W) power is required, but according to the above embodiment, about 4
It is possible to handle with power of about 1/10 of W. The above-mentioned embodiment is not only a building material, but a place where connection with a commercial power line is difficult, especially in a rural area with a long distance between houses, a resort area,
It is also suitable for night recognition information boards in beach parks, river parks, mountain parks, etc.

FIG. 2 shows another embodiment of the light emitting device of the present invention. As shown in FIG. 3A, in this embodiment, the plate-shaped member is composed of two glass plates 10 and 11, and these glass plates are of a thickness having a predetermined strength, and have a suitable support portion. 12 and the side wall portion 13 are integrally combined.

The internal space 14 between the glass plates 10 and 11 forms the optical path of the light from the light emitting diode 15. For example, as shown in FIG. A plurality of transparent or semi-transparent protrusions 16 protruding toward each other are formed, and a color solar battery cell 17 is bonded to the inside of the glass plate 11. Further, a high-performance reflector 18 is arranged inside each side wall 13.

The light emitted from the light emitting diode 15 travels in the internal space 14 within a predetermined angle range (for example, 20 degrees), hits the projection 16 as shown in the drawing, and is partially or irregularly reflected on the surface thereof to form an adjacent projection. The parts 16 intersect with each other and intersect with each other, so that the light is centered on each protrusion 16 and the glass plate 1
It passes through 0 and is led to the outside. In this case, the light is reflected by the color solar battery cells 17 and guided to the outside.
In this way, the plate-shaped member composed of the glass plates 10 and 11 can be used as a light-emitting building material such as an outer wall and paving stones.

In the light emitting device of the present invention, a solar cell is suitable as a power source for the light emitting diode from the viewpoint of energy saving, but the power source is not limited to this.
Normal batteries or commercial power may be used. in this case,
The power consumption of the light emitting diode is extremely low, and the battery can be used for a sufficiently long period.

Further, as the material of the plate member, in addition to glass, transparent or translucent materials such as polycarbonate and acrylic can be used, and at least the light emitting surface thereof is provided with a matting treatment, an etching treatment or the like to have a reflection effect. It is preferable to do so.

Further, an appropriate pattern, characters, etc. may be engraved on the light emitting surface, or the light emitting diode may be blinked at a predetermined time interval by the lighting controller to further reduce the power consumption. can do.

[0027]

As described above, according to the present invention, it is possible to realize a light emitting device with extremely low power consumption. In particular, by using a solar cell, a light emitting outer wall that does not use commercial power and does not require distribution line construction, light emitting Building materials such as walls, luminous roofs, luminous paving stones,
It can be used for applications such as luminous guide plates and luminous safety road signs. By utilizing sunlight for such light-emitting lighting without using commercial system power, it contributes to the substitution of oil by using solar energy and contributes to the prevention of global warming by reducing CO ₂ emissions.

Another application of the device of the present invention is a place where sunlight cannot be obtained, specifically, an inner wall of a room of a general household,
There are inner walls of corridors such as hotels and hospitals, tunnel inner walls in large-scale places, underground mall inner walls (for example, as a safety light after extinguishing lights), and in that case, the plate-shaped member (glass plate)
The solar cell may not be attached to the solar cell, and the power source may be installed and secured in the vicinity where sunlight can be obtained.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of another embodiment of the present invention.

[Explanation of symbols]

1 glass plate 2 Light emitting diode 3 solar cells 4 High-performance storage battery 5 Lighting controller 6 High performance reflector

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) H01L 33/00 F21S 9/02 Q // F21Y 101: 02 H01L 31/04 R (71) Applicant 501267818 Shares Company Kanto I'm 7-29-5, Chuo, Warabi-shi, Saitama (71) Applicant 501004660 Fluorescent Trading Co., Ltd. 1-10-19, Inari, Soka-shi, Saitama (71) Applicant 000006242 Matsushita Ecosystems Co., Ltd. Kasugai, Aichi Takarai-cho character 4017 Shimonakada (72) Inventor Takao Yoshida 5-1-11-601 Higashigotanda, Shinagawa-ku, Tokyo (72) Inventor Notomo Fujieda 6-36-11 Nishi-Kamata, Ota-ku, Tokyo Nihon Keisoku Giken Co., Ltd. In-company (72) Inventor Masahide Oshiro 6-13-31 Minamikarasuyama, Setagaya-ku, Tokyo Sowa Construction Co., Ltd. (72) Inventor Katsuya Kitamura 7-29-5 Chuo, Warabi-shi, Saitama Stock Association Company Kanto Im (72) Inventor Toshiaki Nakagawa 1-10-19 Inari, Soka-shi, Saitama Fluorescent Trading Co., Ltd.Company (72) Inventor Akira Sugano 4811 Maruuchi, Takarai-cho, Kasugai-shi, Aichi Matsushita Seiko Co., Ltd. Inner F term (reference) 2E110 AA37 AB04 AB05 AB22 GB32W 5F041 BB27 DA82 DB07 DC08 DC26 EE23 FF11 5F051 BA03 JA02 JA07 JA17

Claims (6)

[Claims] 1. At least one light emitting diode and a transparent or semitransparent plate-shaped member having the light-emitting diode arranged at an end thereof, the plate-shaped member reflecting incident light from the light-emitting diode. A light-emitting device having a reflecting portion configured to be led out to the outside. 2. The light emitting device according to claim 1, further comprising a solar cell as a power source of the light emitting diode. 3. The light emitting device according to claim 2, further comprising a storage battery charged by the solar cell, the storage battery being connected to the light emitting diode. 4. The light emitting device according to claim 2, wherein the solar cell is bonded to one flat surface portion of the plate member. 5. The plate-shaped member has an internal space, the reflection portion is formed on an inner surface of the internal space, and the light emitting diode is arranged at an end of the plate-shaped member corresponding to the internal space. The light emitting device according to claim 1, wherein 6. The light emitting device according to claim 5, wherein the reflecting portion is composed of a plurality of transparent or semi-transparent protrusions protruding toward the interior space.