JP2012013777A - Decoration structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a self-power-generating, self-luminous type decoration structure capable of making a decoration body illuminate based on electric power it generates on its own by receiving light for power generation.SOLUTION: The decoration structure includes: a base part 2 on which a decoration body 1 formed in a three-dimensional design and having a three-dimensional shape is formed; a solar battery 3 which is disposed in the decoration body 1; a storage battery 4 which is disposed in the decoration body 1 and electrically connected to the solar battery 3, and stores electric power generated by the solar battery 3; and a light source 5 which is disposed in the decoration body 1 and electrically connected to the storage battery 4, and emits light by an output from the storage battery 4.

Description

  The present invention relates to a decorative structure of self-power generation and self-luminous type having decorative properties. The present invention can be applied to an emblem, a display body, a license plate and the like mounted on a vehicle such as an automobile. Self-power generation and self-luminous type means that a light source emits light based on electric power generated by a solar cell mounted on the self-power generation type.

  Patent Document 1 proposes a technique for causing a display element (emblem) mounted in an automobile or the like to emit light. Patent Document 2 proposes a vehicle display device that extracts power for causing the topsoil portion to emit light from the power source of the vehicle.

JP 2009-12558 Japanese Patent Laid-Open No. 08-002342

  According to the technique according to Patent Document 1, when an emblem that emits light is attached to a vehicle or the like, wiring work for wiring from an in-vehicle power source for the vehicle to the emblem is required. Furthermore, an emblem cannot be attached to a place where wiring from an in-vehicle power source cannot be performed, and the place where the emblem is installed is limited.

  Similarly, in the technique according to Patent Document 2, wiring work for wiring from an in-vehicle power source for vehicles to an emblem is required. Furthermore, an emblem cannot be attached to a place where wiring from an in-vehicle power source cannot be performed, and the place where the emblem is installed is limited.

  The present invention has been made in view of the above circumstances, and does not require power supply wiring from a power source such as an in-vehicle power source, and self-lights a decorative body based on power generated by receiving power generation light. An object is to provide a power generation and self-luminous decorative structure.

  A decorative structure according to aspect 1 includes a base that forms a decorative body having a three-dimensional shape, a solar cell disposed in the decorative body, a solar cell disposed in the decorative body and electrically connected to the solar cell, and generating power with the solar cell. A self-power-generating and self-luminous decorative structure, comprising: a storage battery that stores the generated electric power; and a light source that is disposed on the decorative body and is electrically connected to the storage battery and emits light by output from the storage battery.

  In this case, self-powered and self-luminous decorations that receive generated light such as sunlight in the daytime or light place and store the power generated by themselves in a storage battery, and shine the decorative body at night or in the dark with the stored power A structure can be provided. Examples of the decorative structure include characters (including several characters and pictographs), figures, patterns, and the like. Furthermore, an emblem, a display body, a license plate and the like mounted on a vehicle such as an automobile are exemplified. Specifically, a symbol, a mark, an emblem, an insignia, a family crest are exemplified, and further, a company name, a vehicle name, a model, and several characters are exemplified. Examples of the font include alphabets, hiragana, katakana, Arabic letters, and Russian letters. Languages such as Japanese, English, German and Arabic are not important.

  According to the decorative structure according to the aspect 2, in the aspect 1, the solar cell, the storage battery, and the light source are embedded and concealed inside the decorative body. A solar cell, a storage battery, and a light source are embedded and sealed inside the decorative body. Suitable when the decorative structure is used outdoors.

  According to the decorative structure according to the aspect 3, the light diffusing member that diffuses the light emitted from the light source is provided in the aspect 1, and the light diffusing member is located on the back side of the decorative body rather than the outer edge contour of the decorative body. It has an exposed portion that is exposed to the outside, and the exposed portion is illuminated by light emitted from a light source at night or in a dark place. The light emitted from the light source passes through the inside of the light diffusing member. The exposed portion of the light diffusing member shines by being guided. Therefore, the exposed portion shines while being exposed outward from the outer edge contour of the decorative body. In this case, since the outer edge contour of the decorative body is visually recognized so as to emit light, the visibility of the decorative body is improved at night or in a dark place.

  According to the decorative structure according to the aspect 4, in the aspect 1, the decorative body forms an incident opening through which the generated light is incident, and the generated light incident surface of the solar cell faces the incident opening of the decorative body. It is arranged on the back side of the decorative body. Since power generation light such as sunlight enters the solar cell from the entrance opening of the decorative body, the power generation area and power generation amount of the solar cell are ensured.

  According to the decorative structure according to the aspect 5, in the aspect 1, the power generation light incident surface of the solar cell is disposed on the front side of the decoration body so that the power generation light is incident thereon. Since generated light such as sunlight is incident on the solar cell, the amount of power generated by the solar cell is secured.

  According to the decorative structure according to the aspect 6, in the aspect 1, the control unit that controls the storage battery and the light source is provided, and the control unit does not use the optical sensor, and the electric power generated by the solar cell is equal to or less than a predetermined value. In this case, the environment is estimated to be night or dark, and the light source is caused to emit light based on the electric power stored in the storage battery. In this case, when the power generation amount of the solar cell is equal to or less than the predetermined value, the control unit estimates that the environment is night or dark without using the optical sensor, and causes the light source to emit light based on the electric power stored in the storage battery. Shine the decorative body. Since the amount of electric power generated by the solar cell substitutes for the optical sensor, the optical sensor becomes unnecessary. For this reason, it is suppressed that the design freedom of the shape and structure of the decorative body is limited by the optical sensor.

  According to the decorative structure according to the aspect 7, in the aspect 1, the optical sensor provided on the decorative body for detecting the generated light, the detection signal of the optical sensor is input, and the storage battery and the light source are controlled according to the detection signal. And a control unit, when the control unit determines that the environment is bright based on the detection signal of the optical sensor, the electric power generated by the solar cell is stored in the storage battery, and based on the detection signal of the optical sensor When it is determined that the environment is dark, the light source is caused to emit light based on the electric power stored in the storage battery. In this case, when the control unit determines that the generated light such as sunlight is bright and the environment is bright based on the detection signal of the optical sensor, the control unit causes the storage battery to store the electric power generated by the solar cell. On the other hand, when the control unit determines that the environment is dark based on the detection signal of the optical sensor, the control unit causes the light source to emit light based on the power stored in the storage battery. This ensures the design of the decorative body at night or in the dark.

  According to the present invention, in this case, self-power generation and self-acceleration that enhances the design of the decorative body by storing power generated by itself by receiving generated light such as sunlight in a storage battery and illuminating the light source based on the power. A light emitting decorative structure can be provided. The decorative structure is a self-power generation type and a self-light-emitting type, and wiring for connecting to an external power source is unnecessary. Therefore, the decorative structure according to the present invention can be attached to an arbitrary place such as a vehicle or a building via an adhesive, an adhesive tape, a fixture, or the like.

1A is a plan view of a decorative structure, FIG. 2B is a cross-sectional view taken along line BB of the decorative structure, and FIG. 3C is a cross-sectional view of the decorative structure according to the first embodiment. It is sectional drawing along a line. FIG. 3 is a block diagram illustrating a wiring relationship of a control unit according to the first embodiment. 10 is a flowchart executed by a control unit according to the third embodiment. (A) is a top view of a decoration structure concerning Embodiment 4, (B) is sectional drawing along the BB line of the decoration structure. FIG. 10 is a block diagram illustrating a wiring relationship of a control unit according to the fourth embodiment. 10 is a flowchart executed by a control unit according to the fifth embodiment. FIG. 10 is a cross-sectional view of a decorative structure according to Embodiment 6. It is sectional drawing which concerns on Embodiment 6 and shows the concept of the solar cell embed | buried under a decoration structure. FIG. 7A is a plan view of a decorative structure, and FIG. 7B is a plan view of a different decorative structure according to the seventh embodiment. FIG. 10 is a cross-sectional view of a decorative structure according to Embodiment 8. In connection with Embodiment 9, (A) is a plan view of a decorative structure, and (B) is a cross-sectional view taken along line BB of the decorative structure. 11A is a plan view of a decorative structure, and FIG. 10B is a cross-sectional view taken along line BB of the decorative structure. (A) is a top view of a decoration structure concerning Embodiment 11, (B) is sectional drawing along the BB line of the decoration structure. FIG. 16 is a cross-sectional view of a decorative structure according to Embodiment 12.

(Embodiment 1)
FIG. 1 shows the concept of the first embodiment. The decorative structure is exemplified by an emblem mounted on a vehicle such as an automobile. The emblem includes a base 2 that forms a decorative body 1 formed as a three-dimensional solid design, a solar cell 3 that is disposed on the decorative body 1, a solar cell 3 that is disposed on the base 2, and is electrically connected to the solar cell 3 and A storage battery 4 that stores electric power generated by the solar battery 3 and a light source 5 that is disposed in the base 2 and is electrically connected to the storage battery 4 and emits light by an output from the storage battery 4. The storage battery 4 can be formed of a physical battery such as a capacitor, or a chemical battery with a chemical reaction such as an oxidation-reduction reaction. The decorative body 1 has a predetermined three-dimensional character, figure, pattern, number, or the like. The decorative body 1 includes a three-dimensional ring and a character “A” that is integrally connected in the three-dimensional ring. The shape is not limited to this. The three-dimensional shape means a three-dimensional shape having a height, a width, and a length. The decorative body 1 is preferably formed of a resin such as a hard resin or a metal that does not have translucency. This is because the built-in storage battery 4, light source 5, and control unit 6 are not visible from the outside. However, depending on the case, the decorative body 1 may be formed of a resin or glass having translucency. The decorative body 1 includes a front surface 10 on the side of power generation light such as sunlight, a ring-shaped outer end surface 11 in a plan view in contact with outside air, an inner end surface 12 in contact with outside air, and a back surface opposite to the power generation light such as sunlight. 14

  As shown in FIG. 1B, the decorative body 1 has portions 1a, 1b, 1c, and 1d. Although the decorative body 1 closes the front surface 10, the decorative body 1 has a hollow recess 15 that opens to the back surface side. According to FIG. 1B, the recess 15 has recesses 15a, 15b, 15c, 15d, and according to FIG. 1C, it has a recess 15e, a recess 15f, and a recess 15h. The decorative body 1 has an incident opening 16 for allowing generated light such as sunlight to enter the solar cell 3 from the front surface 10 side. As shown in FIG. 1A, the incident aperture 16 has a first incident aperture 16a, a second incident aperture 16b, a third incident aperture 16c, and a fourth incident aperture 16d. The incident opening 16 is defined by the inner end face 12 of the decorative body 1. The first incident opening 16 a is partitioned by the inner end surfaces 12 a 1 and 12 a 2 of the decorative body 1. The second incident opening 16b is defined by the inner end faces 12b1, 12b2, and 12b3 of the decorative body 1. The third incident opening 16c is defined by the inner end faces 12c1 and 12c2 of the decorative body 1. The fourth incident opening 16d is defined by the inner end surfaces 12d1, 12d2, 12d3, and 12d4 of the decorative body 1.

  The back case 7 is liquid-tightly fixed to the back surface 14 protruding rearward (in the direction of the arrow R) of the decorative body 1 through welding or a ring seal so as to enhance the sealing performance. The solar cell 3, the storage battery 4, and the light source 5 are embedded and concealed inside the recess 15 of the decorative body 1, and liquid tightness with respect to the solar cell 3, the storage battery 4, and the light source 5 is ensured. Specifically, as shown in FIG. 1B, the light source 5a is accommodated in the recess 15a. The control unit 6 is accommodated in the recess 15b. The storage battery 4 is accommodated in the recess 15c. A light source 5d is accommodated in the recess 15d. As shown in FIG. 1C, the light source 5e is accommodated in the recess 15e. The back case 7 is accommodated in the recess 15f. The light source 5h is accommodated in the recess 15h.

  The light source 5 (5a, 5d, 5e, 5h) is preferably an LED in consideration of small size, low power consumption, and low heat generation, but may be another light source. As the color of the light source 5, red, blue, green, white, yellow, or the like can be selected as appropriate. The number of the light sources 5 can be set depending on the size of the emblem or the light diffusing member 9, but is not particularly limited, and is influenced by the size of the emblem, the complexity of the shape of the emblem, etc. it can.

  As shown in FIGS. 1A, 1B and 1C, a light diffusing member 9 having a plate shape for receiving and diffusing the light emitted from the light source 5 is embedded in the back surface 14 side of the decorative body 1 (embedded in the decorative body 1). The light source 5, the control unit 6, and the back side of the storage battery 4 are provided. A light diffusing member 9 is disposed between the solar cell 3 and the decorative body 1. The light diffusing member 9 has a plate shape and is used for transmitting and diffusing the light (artificial light) from the light source 5. The light diffusing member 9 has a light guide property and a light guide material such as resin or glass having light diffusibility. It is formed with. When the light source 5 is turned on, light is emitted toward the light diffusing member 9 in the direction of the arrow E2 (see FIG. 1B), so that the light is transmitted and diffused in the light diffusing member 9, and the entire light diffusing member 9 is Shine. The light diffusing member 9 has an exposed portion 90 that is exposed outward from the outer edge contour forming the decorative body 1 in plan view. Since the entire light diffusing member 9 shines, the exposed portion 90 is a portion that is shined and viewed at night or in a dark place, and is exposed to the outside of the outer edge contour of the decorative body 1 by α. For this reason, if the light of the light source 5 is diffused to the light diffusing member 9 at night or in a dark place and the exposed portion 90 is shining, it is visually recognized as if the outer edge contour of the decorative body 1 is shining. The design is enhanced at night and in dark places. As shown in FIGS. 1B and 1C, although the light diffusing member 9 is arranged on the incident side of power generation light such as sunlight rather than the solar cell 3, the light diffusion member 9 is generated light such as sunlight. Has a facing opening 91. For this reason, power generation light such as sunlight incident in the direction of arrow W can be efficiently incident on the power generation light incident surface 30 of the solar cell 3 through the facing opening 91. That is, as shown in FIGS. 1B and 1C, the generated light incident surface 30 of the solar cell 3 faces the incident opening 16 of the decorative body 1. The facing opening 91 has a shape that faces the incident opening 16 of the decorative body 1 and approximates it. The solar cell 3 has a thin plate shape and is disposed on the back surface 14 side of the decorative body 1 so as to be behind the light diffusion member 9. As the solar cell 3, a known solar cell such as a silicon solar cell can be adopted, and a dye-sensitized solar cell can be exemplified. As can be understood from FIGS. 1B and 1C, the decorative body 1, the light diffusing member 9, the solar cell 3, and the back case 7 are arranged in this order from the side of the power generation light such as sunlight.

  As shown in FIG. 1B, a control unit 6 for controlling the storage battery 4 and the light source 5 is embedded in a liquid-tight manner inside the recess 15 b of the decorative body 1. In this case, it is preferable that the light diffusing member 9 is liquid-tightly fixed to the back side of the decorative body 1 through welding, fusion, adhesive, or the like. When the generated light such as sunlight is bright and the power generation amount of the solar cell 3 is greater than or equal to a predetermined value, the environment is considered to be daytime or a bright place, and it is not necessary to shine the outer edge contour of the decorative body 1. Outputs to the storage battery 4 a command to store the power generated by the solar battery 3 in the storage battery 4 and outputs a command to stop the light emission of the light source 5 to the light source 5 to suppress the power consumption of the storage battery 4. FIG. 2 shows a block diagram in which the solar cell 3, the storage battery 4, the light source 5, the control unit 6, and the optical sensor 8 are connected. The detection signal of the optical sensor 8 informs the control unit 6 of ambient brightness. When the ambient brightness is dark and the voltage of the storage battery 4 is equal to or higher than a predetermined value of storage (= when the storage battery 4 stores more power than specified), the control unit 6 turns on the light source 5. On the other hand, when the environment is bright and the solar battery 3 is generating power at a voltage required to charge the storage battery 4, the control unit 6 electrically connects the solar battery 3 and the storage battery 4 to each other. The battery 4 is quickly charged with the electric power generated by the solar battery 3. Even when the ambient brightness is brighter than the second predetermined value, the control unit is configured to generate power at a voltage lower than the voltage required for charging the storage battery 4 when the voltage of the solar battery 3 is charged. 6 does not connect the solar cell 3 and the storage battery 4. At this time, since the environment is bright, the light source 5 is not turned on and is turned off. Here, when the voltage of the storage battery 4 is small, in order to prevent overdischarge of the storage battery 4, the control unit 6 stops the lighting of the light source 5 even when the environment is at night or in a dark place. Wait in the off state. In this case, in some cases, the control unit 6 may turn on the light source 5 for a time determined by the user or the designer. In this case, the storage battery 4 needs to have a capacity capable of storing enough power to turn on the light source 5 in a predetermined time.

  Now, according to the present embodiment, as shown in FIG. 1C, the optical sensor 8 is disposed in the recess 15 f on the front surface 10 side of the decorative body 1. When the optical sensor 8 detects power generation light (arrow W direction) such as sunlight, the detection signal of the optical sensor 8 is input to the control unit 6 through the wiring, and the control unit 6 responds to the detection signal of the optical sensor 8. The storage battery 4 and the light source 5 are controlled through wiring. That is, when the environment is bright, there is little need to light the emblem, so the control unit 6 outputs a command to stop the light emission of the light source 5 to the light source 5. Thereby, consumption of the electric power of the storage battery 4 is suppressed. When the environment is bright (the solar cell 3 can generate power, but there is little need to shine the decorative body 1), the solar cell 3 generates power using generated light such as sunlight. The electric power generated by the solar cell 3 is stored in the storage battery 4 without turning on the light source 5. On the other hand, it is preferable to shine the emblem when the environment is dark. Therefore, the control unit 6 outputs a command for causing the light source 5 to emit light to the light source 5 based on the electric power stored in the storage battery 4. In this case, the light source 5 emits light at night or in a dark place (power generation by the solar cell 3 cannot be expected), and the light is transmitted and diffused inside the light diffusing member 9, so that the entire light diffusing member 9 shines. The exposed portion 90 of the diffusing member 9 shines. For this reason, it is visually recognized by the viewer so that the outer edge contour of the decorative body 1 shines at night or in a dark place, and the design of the decorative body 1 is enhanced.

  According to the present embodiment, as shown in FIG. 1C, the optical sensor 8 is accommodated in the recess 15f so as to face the sensor opening 17 formed in the front surface 10 of the decorative body 1, and the decorative body 1 is retracted to the back surface 14 side of the decorative body 1 from the front surface 10. Thereby, the optical sensor 8 does not protrude from the front surface 10 of the decorative body 1 and is retracted to the back surface 14 side from the front surface 10 of the decorative body 1, and damage to the optical sensor 8 when the emblem is used is suppressed. As described above, although the optical sensor 8 is retracted inward from the front surface 10 of the decorative body 1, it faces the sensor opening 17 while approaching the sensor opening 17. An advantage of being able to enter the sensor surface of the sensor 8 is obtained. In some cases, it is also preferable to arrange a light scattering portion 18 including metal powder particles that scatter power generation light such as sunlight near the sensor opening 17. In this case, when the emblem is mounted on a vehicle or the like, when the traveling direction of the vehicle is changed, the direction of the front surface 10 of the decorative body 1 of the emblem is frequently changed. Even in such a case, it can be expected that the optical sensor 8 embedded on the front surface 10 side of the decorative body 1 can effectively receive power generation light such as sunlight. Therefore, even if the environment is bright, if the current environment is at night or in a dark place, detection by the optical sensor 8 is suppressed, and the light source 5 is suppressed from being turned on. However, the optical sensor 8 may protrude forward from the front surface 10.

  As the solar cell 3, a known solar cell such as a silicon solar cell can be adopted, but a dye-sensitized solar cell can be used. In this case, it is possible to contribute to the thinning of the solar cell 3, and as a result, an increase in the thickness of the emblem is suppressed. Since the light diffusion member 9 also has a plate shape, an increase in the thickness of the emblem is suppressed. According to the dye-sensitized solar cell, the solar cell 3 exhibiting different colors can be obtained by changing the dye adsorbed on the titanium oxide film. For example, by using cis-bis (isothiocyanato) bis (2,2′-bipyridyl-4,4′-dicarboxylic acid) ruthenium (II) ditetrabutylammonium complex (commonly known as N719)), a solar cell 3 having a red color 3 Is possible. By using 2,2 ': 6', 2 "-terpyridyl-4,4 ', 4" -tricarboxylic acid) ruthenium (II) tritetrabutylammonium complex (commonly known as black dye)), it has a dark dark green color The solar cell 3 becomes possible. In addition, by using D131 organic dye (Mitsubishi Paper Co., Ltd.), a solar cell 3 having a yellow color is also possible. In this case, the designability can be improved.

  According to this embodiment, the light source 5, the control unit 6, and the storage battery 4 are embedded in the recess 15 (dead space) formed inside the decorative body 1 in order to make the decorative body 1 into a three-dimensional three-dimensional design shape. This can further contribute to the miniaturization of the emblem. Even when the control unit 6, the storage battery 4 and the light source 5 are heated during operation, the control unit 6, the storage battery 4 and the light source 5 are embedded on the front surface 10 side of the decorative body 1, Heat dissipation to the outside air can be expected, and overheating of the control unit 6, the storage battery 4, and the light source 5 can be suppressed. In particular, when the vehicle travels, the frequency of contact between the emblem and the air increases, and as a result, the control unit 6, the storage battery 4 and the light source 5 are embedded on the front surface 10 side of the decorative body 1. You can expect sex. Furthermore, the entrance opening 16 of the decorative body 1 is necessary for forming the contour of the design of the decorative body 1. Such an incident opening 16 also serves as a space for allowing power generation light such as sunlight to enter the power generation light incident surface 30 of the solar cell 3, is exposed to the outside air, and is in contact with the outside air. The controller 6, the storage battery 4, and the light source 5 are embedded in the recess 15 inside the decorative body 1 having such an incident opening 16. For this reason, the heat radiation of the control unit 6, the storage battery 4, and the light source 5 can be further promoted through the incident opening 16 of the decorative body 1.

  As described above, according to the present embodiment, the electric power generated by the solar cell 3 by receiving the generated light such as sunlight is stored in the storage battery 4 embedded in the decorative body 1, and is stored in the storage battery 4. Thus, it is possible to provide a self-power generation and self-luminous emblem (decorative structure) that actively shines the outer edge contour of the decorative body 1. Therefore, there is an advantage that a long wiring for electrically connecting the light source 5 to a battery such as a vehicle can be eliminated. Accordingly, the degree of freedom in selecting the place where the emblem is installed can be increased. In general, when the solar cell 3 receives power generation light such as sunlight to generate power, the environment is bright, and thus it is not necessary to light the light source 5. When the solar cell 3 does not receive power generation light such as sunlight and does not generate power, or when the power generation voltage is low, the environment is dark, so it is considered necessary to light the light source 5. According to this embodiment, the incident opening 16 of the decorative body 1 is partitioned by the inner end face 12 of the decorative body 1. As shown in FIGS. 1B and 1C, the inner end surface 12 is substantially perpendicular to the back surface 14 of the decorative body 1. Therefore, the opening width DA (see FIGS. 1B and 1C) on the back side of the incident opening 16 can be secured as large as possible. As a result, the solar cell 3 can contribute to securing a light receiving area and a light receiving amount capable of receiving generated light such as sunlight through the incident opening 16. The inner end face 12 that defines the incident opening 16 in the decorative body 1 is preferably formed of a light reflecting surface so as to enhance light reflectivity. In this case, as shown as incident light LW (see FIG. 1C), power generation light such as sunlight reflected by the inner end surface 12 that forms the incident opening 16 of the decorative body 1 is immediately incident on the solar cell 3. be able to. Therefore, the effect of increasing the amount of light received by the solar cell 3 can be expected.

  When the size of the emblem is large, the decorative body 1 becomes large, and the large storage battery 4 can be mounted in the concave portion 15 of the decorative body 1, so that such usage is also possible. Since the electric power used to turn on the light source 5 is generated by the solar battery 3 and stored in the storage battery 4, it is not necessary to take electric power from an on-vehicle power source of a vehicle such as an automobile. It is not necessary to newly install power wiring when installing the shining emblem as in this embodiment. Similarly, when removing the emblem, only the emblem needs to be removed, and it is not necessary to remove the wiring connecting the emblem and the in-vehicle power source, and the construction is easy.

(Embodiment 2)
Since this embodiment basically has the same configuration and the same operation and effect as the above-described embodiment, FIGS. 1 and 2 are applied mutatis mutandis. When the power generation amount detected by the optical sensor 8 is equal to or greater than a predetermined value, the control unit 6 outputs a command for stopping or suppressing the light emission of the light source 5 to the light source 5 because the environment is daytime or light. When the power generation amount detected by the optical sensor 8 is less than a predetermined value, since the environment is at night or in a dark place, a command for causing the light source 5 to emit light is output to the light source 5 based on the power stored in the storage battery 4. In this case, since the exposed part 90 located on the outer edge of the decorative body 1 shines brightly, the design can be improved.

(Embodiment 3)
FIG. 3 shows a flowchart executed by the control unit 6. This embodiment has basically the same configuration and the same operation and effect as the above-described embodiment. As shown in FIG. 3, first, the control unit 6 determines whether or not the solar radiation intensity S that is an output value of the optical sensor 8 is larger than the threshold value S1 (step S102). When the solar radiation intensity S is larger than the threshold value S1 (Yes in step S102), the environment is bright. Therefore, the control unit 6 determines whether or not the power generation voltage Vpv of the solar cell 3 is larger than the threshold value voltage v4 (step S104). When the power generation voltage Vpv of the solar cell 3 is equal to or higher than the threshold voltage v4 (Yes in step S104), the solar cell 3 is sufficiently generating power. Therefore, the control unit 6 supplies the power generated by the solar cell 3 to the storage battery 4. Charge for a predetermined time (step S106). Next, the control unit 6 determines whether or not the storage voltage Vbat of the storage battery 4 is greater than the threshold voltage v5 (step S108). When the storage voltage Vbat of the storage battery 4 is not greater than the threshold voltage v5 (No in step S108), the storage battery 4 can be charged, so the control unit 6 continuously supplies the power generated by the solar battery 3 to the storage battery 4. Is charged (step S106). The threshold voltage v5 means a voltage at which the life of the storage battery 4 is impaired when the battery is further charged. When the storage voltage Vbat of the storage battery 4 is greater than the threshold voltage v5 (Yes in step S108), the storage battery 4 is sufficiently charged, so the control unit 6 stops charging (step S110) and waits for a predetermined time. (Step S112).

  When the solar radiation intensity S is not greater than the threshold value S1 (No in step S102), it is estimated that the environment is at night or in a dark place. Therefore, the control unit 6 determines whether or not the voltage Vbat of the storage battery 4 is larger than the threshold voltage v2 (step S114). When the voltage Vbat of the storage battery 4 is larger than the threshold voltage v2 (Yes in Step S114), the storage battery 4 can be discharged, and the control unit 6 turns on the light source 5 (Step S116). When the voltage Vbat of the storage battery 4 is not greater than the threshold voltage v2 (No in step S114), the light source 5 is turned off (step S118). In this case, excessive consumption of the electric power of the storage battery 4 is suppressed.

(Embodiment 4)
4 and 5 show a fourth embodiment. The present embodiment has basically the same configuration and the same function and effect as the above-described embodiment. However, the optical sensor for detecting the generated light such as sunlight is not mounted on the front surface 10 of the decorative body 1, and it is not necessary to form a sensor opening on the front surface 10 of the decorative body 1. The degree of freedom of selection can be increased. Thus, the decorative body 1 is an optical sensorless system. As shown in FIG. 5, a control unit 6 that controls the storage battery 4 and the light source 5 is provided. When the generated light such as sunlight is bright and the amount of power generated by the solar cell 3 is large (when the generated voltage is higher than the threshold value A), since there is little need to shine the decorative body 1, based on the generated voltage, The control unit 6 outputs a command to stop the light emission of the light source 5 to the light source 5, and suppresses a decrease in the storage amount of the storage battery 4. On the other hand, when the generated light such as sunlight is dark and the power generation amount of the solar battery 3 is small (when the generated voltage is lower than the threshold value B), such as at night or in a dark place, the control unit 6 A command for causing the light source 5 to emit light is output to the light source 5 based on the electric power stored in the power source 4, and the contour of the decorative body 1 is illuminated at night or in a dark place. In this case, the designability can be improved.

(Embodiment 5)
FIG. 6 shows a fifth embodiment. The present embodiment has basically the same configuration and the same function and effect as the fourth embodiment. Since the optical sensor is not mounted on the front surface 10 of the decorative body 1, it is not necessary to form a sensor opening in the decorative body 1, and the degree of freedom in selecting the design of the decorative body 1 can be increased. FIG. 6 shows a flowchart executed by the control unit 6. As shown in FIG. 6, first, it is determined whether or not the power generation voltage Vpv of the solar cell 3 is larger than the threshold voltage v4 (step S202). When the generated voltage Vpv of the solar cell 3 is equal to or higher than the threshold voltage v4 (Yes in step S202), it is estimated that the environment is bright, and the power generated by the solar cell 3 is supplied to the storage battery 4 for a predetermined time without turning on the light source 5. Charge (step S204). When the storage battery 4 is charged to a threshold voltage v5 or higher, the life of the storage battery 4 is affected. Therefore, it is determined whether or not the power generation voltage Vpv of the solar cell 3 is larger than the threshold voltage v5 (step S206). When the generated voltage Vpv of the solar cell 3 is not greater than the threshold voltage v5 (No in step S206), the control unit 6 continuously charges the storage battery 4 with the power generated by the solar cell 3 (step S204). When the generated voltage Vpv of the solar cell 3 is equal to or higher than the threshold voltage v5 (Yes in Step S206), the control unit 6 stops charging the storage battery 4 (Step S208) and waits for a predetermined time (Step S210).

  When the generated voltage Vpv of the solar cell 3 is not larger than the threshold voltage v4 (No in step S202), it is estimated that the environment is at night or in a dark place. Next, the control unit 6 determines whether the generated voltage Vpv of the solar cell 3 is smaller than the threshold voltage v3 (step S212). When the generated voltage Vpv of the solar cell 3 is smaller than the threshold voltage v3 (Yes in step S212), the environment is estimated to be night or dark. And the control part 6 determines whether the voltage Vbat of the storage battery 4 is larger than the threshold value voltage v2 (step S214). When the voltage Vbat of the storage battery 4 is larger than the threshold voltage v2 (Yes in step S214), the voltage of the storage battery 4 is considered good with respect to the lighting of the light source 5. Turn on (step S216). When the voltage Vbat of the storage battery 4 is not greater than the threshold voltage v2 (No in Step S214), the light source 5 is turned off because the stored power of the storage battery 4 is small (Step S218). In this case, excessive power consumption of the storage battery 4 is suppressed.

(Embodiment 6)
7 and 8 show the sixth embodiment. The present embodiment basically has the same configuration and the same function and effect as the above-described embodiment. The solar cell 3 is a dye-sensitized solar cell that can be thinned. As shown in FIG. 7, a reflective plate 78 having a reflective surface 78 c is provided between the back surface of the solar cell 3 and the back case 7. The solar cell 3 itself is thinned in the thickness direction and has translucency in the thickness direction. As shown in FIG. 7, the solar cell 3 is sandwiched between the back surface of the light diffusing member 9 and the reflection plate 78 so that the power generation light incident surface 30 of the solar cell 3 faces the incident opening 16 of the decorative body 1. Has been placed. Therefore, as shown in FIG. 7, the decorative body 1, the light diffusing member 9, the solar cell 3, the reflecting plate 78, and the back case 7 are arranged in this order from the incident side (arrow W direction) of the generated light such as sunlight. Yes. Generated light such as sunlight is incident on the solar cell 3 through the incident opening 16 of the decorative body 1. Since the solar cell 3 has translucency in the thickness direction, the light transmitted through the solar cell 3 in the thickness direction is reflected by the reflecting plate 78. In this case, since the light reflected by the reflecting plate 78 is received again by the solar cell 3, the power generation efficiency can be increased. In addition, since the dye-sensitized solar cell 3 has a color (red, yellow, green, etc.) based on the dye, it can be used as a background color of the decorative body 1.

  FIG. 8 is a cross-sectional view showing the concept of the solar cell 3 of the present embodiment. The solar cell 3 is a dye-sensitized solar cell, and includes a photoelectrode 31, a counter electrode 32, an electrolyte portion 33, a seal member 34, and the like. As shown in FIG. 8, the photoelectrode 31 is composed of a translucent substrate 310, a transparent conductive film 311 and a photoelectric conversion active material layer 312 and has translucency in the thickness direction. The counter electrode 32 is composed of a translucent substrate 320 and a transparent conductive film 321 and has translucency in the thickness direction. The light-transmitting substrate 310 and the light-transmitting substrate 320 can be formed using a material having excellent light-transmitting properties such as a light-transmitting glass and a light-transmitting resin. The transparent conductive film 311 and the transparent conductive film 321 can be formed of a vapor-deposited film excellent in translucency and conductivity, such as a compound of indium oxide and tin oxide or fluorine-doped tin oxide. Platinum catalyst particles 324 are supported on the transparent conductive film 321. The photoelectric conversion active material layer 312 can be formed of a titanium oxide (generally anatase) particle layer that has adsorbed a pigment. The electrolyte unit 33 includes an oxidation-reduction pair such as I− / I3−, which is oxidized by emitting electrons and is oxidized, and acquires and reduces electrons from the counter electrode 32. It is preferred that The electrolyte portion 33 is preferably an electrolyte solution such as an organic solvent, but may be an ionic liquid or a solid electrolyte using a hole transfer material. Moreover, the pseudo electrolyte which suppressed fluidity | liquidity by making a gel etc. impregnate electrolyte solution or an ionic liquid, or mixing a nanoparticle with electrolyte solution or an ionic liquid may be sufficient. Since the electrolyte part 33 is a solution, the periphery of the photoelectrode 31 and the counter electrode 32 is sealed by a sealing member 34 to prevent liquid leakage of the electrolyte part 33. The electrolyte part 33 has translucency. Since all of the photoelectrode 31, the counter electrode 32, and the electrolyte part 33 have translucency, the solar cell 3 has translucency.

  As shown in FIG. 7, the reflector 78 is installed on the back surface of the solar cell 3 having translucency in the thickness direction, so that a unique marble-like appearance is realized and the emblem has a unique design. I can do it. Further, since the light reflecting plate 78 is installed on the back side of the solar cell 3, the light reflected by the reflecting surface 78 c of the reflecting plate 78 passes through the solar cell 3 once again. In this case, compared with the case where the reflecting plate 78 is not provided, the generated power of the solar cell 3 increases. Instead of the reflecting plate 78, a colored plate 79 colored in a color preferred by the user may be used. The reflecting plate 78 and the colored plate 79 are separate from the back case 7 and can be arbitrarily replaced. However, the reflecting plate 78 and the colored plate 79 may be integrally formed with the back case 7.

(Embodiment 7)
9A and 9B show a seventh embodiment. The present embodiment basically has the same configuration and the same function and effect as the above-described embodiment. The solar cell 3 is a dye-sensitized solar cell. If a dye-sensitized solar cell is employed as the solar cell 3 as in the present embodiment, the dye-sensitized solar cell can create a photoelectrode and a counter electrode by screen printing, stencil printing, pad printing, or the like. It is possible to realize a photoelectrode of any shape easily and inexpensively. Accordingly, the degree of freedom of shape of the dye-sensitized solar cell is improved. Therefore, various shapes of the emblems as shown in FIGS. 9A and 9B can be easily achieved.

(Embodiment 8)
FIG. 10 shows an eighth embodiment. The present embodiment basically has the same configuration and the same function and effect as the above-described embodiment. The solar cell 3 is a dye-sensitized solar cell and has light transmittance in the thickness direction. Therefore, as shown in FIG. 10, the decorative body 1, the solar cell 3, the light diffusion member 9, and the back case 7 are arranged in this order from the incident side of the generated light such as sunlight. Therefore, the solar cell 3 is located in front of the light diffusion member 9 (front surface 10 side). The light emitted from the light source 5 in the direction of the arrow E <b> 2 is transmitted through the solar cell 3 in the thickness direction and reaches the light diffusion member 9. In this case, the light that has been blocked by the light diffusing member 9 as in Embodiment 1 passes through the solar cell 3 in the thickness direction and is reflected by the light diffusing member 9, so that more light reaches the solar cell 3. Can do. For this reason, the electric power generation amount of the solar cell 3 can be increased. In the dye-sensitized solar cell, the entire electrode has light transmittance in the thickness direction, and thus does not hinder the light from the light source 5 from reaching the light diffusion member 9.

(Embodiment 9)
11A and 11B show the ninth embodiment. The present embodiment basically has the same configuration and the same function and effect as the above-described embodiment. The decorative body 1 is made of a material that can transmit light (for example, translucent glass or translucent resin). As shown in FIG. 11B, the decorative body 1 has recesses 15a, 15b, 15c, and 15d. The solar cell 3 is embedded in the recesses 15a, 15b, 15c, and 15d of the decorative body 1 and is disposed on the front surface 10 side of the decorative body 1 so that generated light such as sunlight can be efficiently incident. Therefore, the power generation light incident surface 30 of the solar cell 3 is disposed on the front surface 10 side of the decorative body 1 so that power generation light such as sunlight enters. In order to secure the power generation area as much as possible, it is preferable that the solar cell 3 has a planar shape that matches the planar shape of the decorative body 1. Therefore, the contour shape of the solar cell 3 is preferably substantially the same as or approximate to the contour shape of the decorative body 1. In this case, the incident efficiency of generated light such as sunlight to the solar cell 3 can be increased. In this embodiment, as shown in FIG. 11 (B), the control unit 6, the light source 5, and the storage battery 4 are positioned on the back side of the solar cell 3 in the recesses 15 a, 15 b, 15 c, and 15 d of the decorative body 1. Is provided. The light diffusion member 9 is disposed on the back side of the control unit 6, the light source 5, and the storage battery 4. Also in this embodiment, when the light source 5 emits light toward the light diffusing member 9 in the direction of arrow E2 by the power of the storage battery 4 at night or in the dark, the light from the light source 5 is emitted from the light diffusing member 9 on the back side of the light source 5. It is diffused as a whole and the entire light diffusing member 9 shines. When the viewer visually recognizes the decorative body 1 from the front surface 10 side, the exposed portion 90 of the light diffusing member 9 appears to shine. Therefore, at night or in a dark place, the outer edge contour of the decorative body 1 is visually recognized in a shining state, and the design can be enhanced.

(Embodiment 10)
FIG. 12 shows the tenth embodiment. The present embodiment basically has the same configuration and the same function and effect as the above-described embodiment. As shown in FIG. 12, the solar cell 3 is formed of a light-transmitting dye-sensitized solar cell that can transmit light in the thickness direction, so that power generation light such as sunlight is incident to increase power generation efficiency. Are arranged on the front surface 10 side of the decorative body 1. That is, the power generation light incident surface 30 of the solar cell 3 is disposed on the front surface 10 side of the decorative body 1 so that power generation light such as sunlight enters. As shown in FIG. 12, a control unit 6, a light source 5, and a storage battery 4 are provided inside the decorative body 1 on the back side of the solar cell 3. The back side of the control unit 6, the light source 5, and the storage battery 4 is liquid-tightly covered with a back case 7. As can be understood from FIG. 12, the light diffusing member 9 is disposed in the concave portion 15 of the decorative member 1, and partitions the light source 5 and the solar cell 3 in the concave portion 15 in the thickness direction of the decorative body 1. Here, when the light source 5 emits light in the direction of the arrow E1, the light is scattered by the light diffusion member 9, and the entire light diffusion member 9 is illuminated. Since the light diffusing member 9 is disposed on the back side of the solar cell 3, it is visually recognized as if the entire solar cell 3 is shining. That is, the light from the light diffusing member 9 passes through the front surface 10 along the thickness direction (the direction of the arrow E1 shown in FIG. 12) through the solar cell 3, and therefore the entire decorative body 1 (the solar cell embedded in the decorative body 1). 3) is visually recognized as shining, and the design is ensured.

(Embodiment 11)
FIG. 13 shows an eleventh embodiment. The present embodiment basically has the same configuration and the same function and effect as the above-described embodiment. The decorative body 1 is made of a material having translucency (for example, translucent glass or translucent resin) so that power generation light such as sunlight can enter. The first solar cell 3f has a contour shape substantially the same as the contour shape of the decorative body 1, and the front surface 10 of the decorative body 1 so that power generation light such as sunlight is efficiently incident to increase power generation efficiency. Arranged on the side. Therefore, the power generation light incident surface 30 of the first solar cell 3f is disposed on the front surface 10 side of the decorative body 1 so that power generation light such as sunlight enters. As shown in FIG. 13, a control unit 6, a light source 5, and a storage battery 4 are provided inside the decorative body 1 on the back side of the first solar cell 3 f. A light diffusing member 9 is disposed on the back side of the control unit 6, the light source 5, and the storage battery 4. The light source 5 is a double-sided light emission type that can emit light in the directions of arrows E1 and E2. The facing opening 91 of the light diffusing member 9 has a shape facing the incident opening 16 of the decorative body 1 while facing the incident opening 16 of the decorative body 1. A second solar cell 3 s is provided on the back surface of the light diffusing member 9. The second solar cell 3 s has a thin plate shape, and faces the incident opening 16 of the decorative body 1 and the facing opening 91 of the light diffusing member 9. The back surface 14 of the decorative body 1 is liquid-tightly covered with the back case 7.

  In the daytime or the like, power generation light such as sunlight incident on the emblem in the direction of arrow W is received by the first solar cell 3f and contributes to power generation. The power generation light such as sunlight transmitted through the entrance opening 16 of the emblem is received by the second solar cell 3s and contributes to power generation. Thus, electric power can be efficiently extracted from the generated light such as sunlight incident on the emblem by the solar cells 3f and 3s. On the other hand, at night or the like, when the light source 5 (lights in directions E1 and E2 opposite to each other) is turned on, the light propagates in the direction of arrow E1 and passes through the solar cell 3 toward the front surface 10 side. As a result, the solar cell 3 embedded in the decorative body 1 is visually recognized as shining. Further, as shown in FIG. 13, the light from the light source 5 propagates in the direction of the arrow E2 and is scattered by the light diffusing member 9 disposed on the back surface of the light source 5, so that the entire light diffusing member 9 shines. It is visually recognized by the viewer so that the exposed portion 90 is shining. In the embodiment shown in FIG. 13 as well, the light source 5 can be configured to propagate light in the arrow E2 direction but not in the arrow E1 direction.

Embodiment 12
FIG. 14 shows a twelfth embodiment. The present embodiment basically has the same configuration and the same function and effect as the above-described embodiment. As can be understood from FIG. 14, since the solar cell 3 is disposed on the front surface 10 side of the decorative body 1, the incident efficiency of generated light such as sunlight can be increased. In the daytime or the like, power generation light such as sunlight incident on the emblem in the direction of arrow W is received by the solar cell 3 and contributes to power generation. On the other hand, at night or the like, when the light source 5 emits light in the direction of the arrow E2, it is scattered by the light diffusing member 9 arranged on the back side of the light source 5, and the entire light diffusing member 9 shines. It is visually recognized by the viewer so that the exposed portion 90 forming the outer edge contour of 1 is shining.

  (Others) The present invention is not limited to the embodiment described above and shown in the drawings, and can be implemented with appropriate modifications within a range not departing from the gist. It can also be applied to a display body other than the emblem.

  1 is a decorative body, 10 is a front surface, 11 is an outer end surface, 12 is an inner end surface, 15 is a recess, 16 is an incident aperture, 17 is a sensor aperture, 2 is a base, 3 is a solar cell, 30 is a power generation light incident surface, 4 Is a storage battery, 5 is a light source, 6 is a control unit, 7 is a back case, 8 is an optical sensor, 9 is a light diffusion member, 90 is an exposed portion, and 91 is a facing opening.

Claims (7)

  A base that forms a decorative body having a three-dimensional shape; a solar cell disposed on the base; a storage battery that is disposed on the base and is electrically connected to the solar cell and stores electric power generated by the solar cell; A self-power-generating and self-luminous decorative structure, comprising: a light source disposed on the base and electrically connected to the storage battery and emitting light by an output from the storage battery.   2. The decorative structure according to claim 1, wherein the solar cell, the storage battery, and the light source are embedded in the decorative body.   3. The light diffusing member for diffusing the light emitted from the light source is provided in claim 1 or 2, and the light diffusing member is exposed outward from the outer edge contour of the decorative body on the back side of the decorative body. The decorative structure is characterized in that the exposed portion is illuminated by light emitted from the light source at night or in a dark place.   4. The decorative body according to claim 1, wherein the decorative body forms an incident opening through which power generation light is incident, and a power generation light incident surface of the solar cell faces the incident opening of the decorative body. However, the decorative structure is arranged on the back side of the decorative body.   4. The decorative structure according to claim 1, wherein a power generation light incident surface of the solar cell is disposed on a front surface side of the decorative body so that the power generation light is incident thereon.   In one of Claims 1-5, the control part which controls the said storage battery and the said light source is provided, and the electric power which the said solar cell generates is a predetermined value without using the optical sensor in the said control part. It is estimated that the environment is at night or in a dark place at the following time, and the light source is caused to emit light based on the electric power stored in the storage battery. 6. The light sensor provided in the decorative body for detecting generated light, a detection signal of the optical sensor being input, and the storage battery and the light source according to the detection signal according to claim 1. And a control unit to control,
When it is determined that the environment is bright based on the detection signal of the optical sensor, the control unit stores the electric power generated by the solar battery in the storage battery, and the environment is dark based on the detection signal of the optical sensor. The decorative structure is characterized in that the light source emits light based on electric power stored in the storage battery.

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