JPH0652467B2 - Display - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a display that can be clearly recognized even at night, and is suitable for use in a mail post, a sign, a nameplate, and the like.

(B) Conventional technology It is necessary to make it possible to clearly recognize the presence and displayed contents of signs such as post boxes and road signs even at night. For this reason, conventionally, an illumination lamp driven by a commercial power source is arranged near a mail post or a road sign, and the presence of the mail post or the indication described on the illumination lamp can be easily displayed by this illumination light. To be able to recognize.

(C) Problems to be Solved by the Invention However, as described above, the method of installing the illuminating lamp makes the entire apparatus large-scale.

Therefore, the present invention provides a desired display with a simple configuration.

(D) Means for Solving the Problems The display body of the present invention includes a solar cell, a charger for accumulating power generated by the solar cell, and the power of the charger installed on the back side of the solar cell. And a light reflector provided with a light-emitting body that emits light toward the back surface of the solar cell driven by the solar cell, wherein the solar cell is a transparent electrode, a semiconductor on a translucent insulating substrate. A semiconductor film including a photoactive layer and a back metal electrode are laminated, and at least the back metal electrode has a transmissive portion that transmits light from the light emitter, and the light from the light emitter is transmitted through the light transmissive portion. A desired display pattern is obtained by transmitting light from the back surface side to the front surface side of the solar cell through the.

Further, the transparent portion is formed so as to represent the content desired to be displayed such as characters and symbols.

Further, a box body is formed by using a solar cell module including the solar cell as a wall surface, and the charger and the light emitting body are housed inside the box body.

(E) Operation According to the present invention, the electric power generated by the solar cell is accumulated in the charger during the daytime, and the light-emitting body is driven by the electric power accumulated in the charger at night. Since the light of the light emitting body illuminates the transmissive portion provided in the solar cell from the back side, the display content represented by the transmissive portion can be easily recognized even at night.

(F) Embodiment FIGS. 1 to 3 show a mail post as one embodiment of the present invention, FIG. 1 is a top view and a side view of the appearance, FIG. 2 is a longitudinal sectional view, and FIG. FIG. 4 is a sectional view of a main part.

The display body 10 has a box-like shape including a rectangular parallelepiped portion 11 having a bottom portion 50 shaped to be slightly larger than the upper surface shape of the mail post body 20 and a quadrangular pyramid truncated pyramid portion 12 thereon.
The bottom portion 50 is fixed to the top surface of the post 20. In the rectangular parallelepiped portion 11, an EL panel 13 is arranged on the side surface corresponding to the front surface of the mail post body 20, and a solar cell module 14 is arranged on the other three side surfaces. On the other hand, in the quadrangular truncated pyramid part 12, the solar cell modules 15 and 16 are arranged on four slopes.

The solar cell modules 14, 15 and 16 have a well-known structure in which a solar cell is sandwiched between two tempered glass sheets and laminated and sealed with EVA (ethylene vinyl acetate) between them.

By the way, in the display body 10 described above, the mail post body 20
As shown in FIG. 3, the solar cell modules 15 arranged on the surfaces of the quadrangular truncated pyramid 12 corresponding to the front and back of the
A part of 0, 31 (in this embodiment, the upper end portion), the solar cell PV
A window portion 32 in which the squares do not exist is provided to allow light to enter the inside of the truncated pyramid portion 12. Further, the solar cell PV of this solar cell module 15 is the actual PV 63 filed by the applicant.
-127159 and Japanese Utility Model Laid-Open No. 63-174468, it has a light transmitting portion 33, and in this embodiment, the light transmitting portion 33 is formed in the shape of "". There is.

FIG. 4 is a perspective view showing a main part of this solar cell PV, in which a transparent electrode 3, a semiconductor film 4 including a semiconductor photoactive layer, and a back metal electrode 5 are laminated on a transparent insulating substrate 1 such as glass. Body 2
Is formed, and the semiconductor film 4 and a part of the back surface metal electrode 5 are removed. Therefore, as shown in FIG. It has a light transmitting portion 33 formed on. In the solar cell module 15 of the present embodiment, the resist film 8 used for forming the light transmitting portion 6 remains on the back surface metal electrode 5 to suppress the gloss of the back surface metal electrode 5. .

The solar cells of the other solar cell modules 14 and 16 have a well-known structure in which the light transmitting portion 33 is not formed.

Again, referring to FIG. 2 or 3, the solar cell module including the window portion 32 and the light transmitting portion 33 of the solar cell module 15.
On the back surface of 15, a light reflecting plate 35 having a light emitting body 34 such as an LED is provided.
Is provided. On the other hand, inside the rectangular parallelepiped portion 11, a charger 36 for charging the electric power generated in the solar cell modules 14, 15, 16 and a light emitting body 34 such as a charge / discharge of the charger 36 or an LED.
A control circuit 37 that performs electrical control such as blinking is embedded.

In such a configuration, in the daytime when the sunlight is radiated, the generated power generated by the sunlight being radiated to the solar cell modules 14, 15, 16 is charged and accumulated in the charger 36. Become. In addition, the solar cell module 15
The light (indicated by the arrow in FIG. 3) incident on the inside of the display body 10 through the window 32 of the solar cell module 1 is reflected by the light reflecting plate 35.
It is reflected in the direction of 5 and illuminates the light transmission part 33 of the solar cell PV so as to pass from the back side to the front side, and therefore the “〒” mark composed of the light transmission part 33 is clearly visible. It will be.

On the other hand, at night, the light-emitting body 34 is driven by the electric power stored in the charger 36. The light emitted from the light emitting body 34 leaks from the light transmitting portion 33 to the outside of the display body 10,
As a result, the "" mark formed by the light transmitting portion 33 can be clearly recognized even at night.
The charger 36 also drives the EL panel 13,
Display the display pattern (eg, map) depicted in 13.

As described above, the solar cell module 14 according to the present invention,
At the same time, 15 and 16 are the power source of the light-emitting body 34, and at the same time, the solar cell module 15 is also a display plate for displaying characters, symbols and the like.

By the way, in the present embodiment, the interior of the display body 10 may be heated to a considerably high temperature by being exposed to sunlight, which may cause thermal damage to the internal charger 36 and the control circuit 37. Therefore, according to the present invention, the rectangular parallelepiped portion of the display body 10
A large number of ventilation holes 53 are formed in the bottom surface portion 50 of 11.

FIG. 5 is a cross-sectional perspective view showing the bottom surface portion 50 of the rectangular parallelepiped portion 11 in detail. The bottom part 50 of the rectangular parallelepiped part 11 is formed such that the peripheral part 51 is raised from the central part 52 by one step. Therefore, only the central part 52 is in contact with the upper surface of the mail post body 20, and the peripheral part 51 is the post box. A gap is formed between the main body 20 and the main body 20. A large number of ventilation holes 53 are formed in this peripheral portion.

With such a configuration, the natural wind generated outside the display body 10 is
After being taken into the inside of the display body 10 through a certain ventilation hole 53 and flowing inside the display body 10, it follows a path of flowing out to the outside of the display body 10 through another ventilation hole 53. Therefore, the charger 36 and the control circuit 37 inside the display body 10 are cooled and protected from thermal damage.

The above embodiment relates to the display body 10 to be attached to the post, but the present invention is not limited to this, a road sign,
It can also be applied to displays such as various information boards and nameplates. In these cases, the content written on the road sign or the guide plate may be represented by the transmissive portion including the through hole 6 such as the above-mentioned solar cell PV, and this may be illuminated by the light emitting body from the back side.

(G) Effect of the Invention The display of the present invention is driven by the power of the solar cell, the charger that stores the power generated by the solar cell, and the power of the charger that is installed on the back side of the solar cell. A light reflector comprising a light-emitting body that emits light toward the back surface of the solar cell, wherein the solar cell comprises a transparent electrode and a semiconductor photoactive layer on a translucent insulating substrate. A semiconductor film including a back metal electrode is laminated, and at least the back metal electrode has a transmissive part that transmits light from the light emitter, and the light from the light emitter is passed through the transmissive part. Since the light is transmitted from the back side to the front side of the solar cell, it is possible to clearly display a desired display pattern, and it is not necessary to use a special illumination lamp by a commercial power source. In particular, according to the display of the present invention, the display pattern can be easily recognized even at night by the light emitted from the light emitting body emitted from the transparent portion of the solar cell.

Further, in the present invention, the light reflection plate is used, so that the light can be efficiently transmitted through the transmitting portion, and the display can be made clearer.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention, and FIG.
(A) is a top view, (B) and (C) are side views, FIG. 2 is a longitudinal sectional view, FIG. 3 is a longitudinal sectional view of an essential part of FIG. 2, and FIG. 4 is a solar cell. FIG. 5 is a sectional perspective view of an essential part, and FIG. 5 is a sectional perspective view of an essential part of FIG. 2, in which 10 is a display body, 14, 15, 16 are solar cell modules, 34 is a light emitting body, and 36 is a charger.

(72) Inventor Tatsunori Toyota, 18-18 Keihan Hon-dori, Moriguchi City, Osaka, Sanyo Electric Co., Ltd. (72) Inventor, Yasuo Kishi 2--18, Keihan Hondori, Moriguchi, Osaka Sanyo Electric Co., Ltd. (56) References JP 58-63180 (JP, A) JP 62-11029 (JP, Y2)

Claims (3)

[Claims] 1. A solar cell, a charger for accumulating power generated by the solar cell, and a solar battery installed on the back side of the solar cell.
A light reflector comprising a light-emitting body driven by the power of the charger to emit light toward the back surface of the solar cell, wherein the solar cell is on a translucent insulating substrate. A transparent electrode, a semiconductor film including a semiconductor photoactive layer, and a back metal electrode are laminated, and at least the back metal electrode has a transmissive portion that transmits light from the light emitter, and A display body having a desired display pattern by transmitting the light of (1) to the front side of the solar cell from the back side via the transmission part. 2. The display body according to claim 1, wherein the transparent portion is formed so as to represent a content desired to be displayed such as characters and symbols. 3. The display body according to claim 1, wherein a box body is formed by using a solar cell module including the solar cell as a wall surface, and the charger and the light emitting body are housed inside the box body.