WO2011111691A1 - Display device - Google Patents

Abstract

The disclosed display device is provided with: a display panel (11) that displays an image; a photoelectric conversion panel (12) that converts received light to electrical power; and a switching mechanism (13) that, in a predetermined region of the device front surface (Fr), switches between a state wherein the display panel (11) is disposed facing the device front surface (Fr) and a state wherein the photoelectric conversion panel (12) is disposed facing the device front surface (Fr). In this case, by means of the switching mechanism (13), in a predetermined region of the device front surface (Fr), it is possible to switch between the state wherein the display panel (11) is disposed facing the device front surface (Fr) and the state wherein the photoelectric conversion panel (12) is disposed facing the device front surface (Fr).

Description

Display device

The present invention relates to a display device. This specification includes the contents described in the specification and / or drawings of Japanese Patent Application No. 2010-056283, which is the basis of the priority of the present application.

In recent years, the use of liquid crystal display devices or the like as information transmission media such as signs, advertisements, signs, etc. installed mainly outdoors has been studied. For example, Japanese Unexamined Patent Application Publication No. 2009-294402 (Patent Document 1) discloses that a relatively large liquid crystal display device is put into practical use for a television, an information display, a billboard display, and the like.

JP 2009-294402 A

By the way, a display device installed outdoors becomes difficult to see depending on the time zone due to, for example, reflection of sunlight. In a time zone when the screen is difficult to see due to sunlight, it may be useless even if the display device functions as an information display for displaying information. In addition, when installed on the street, it may not be necessary to display information depending on the time of day. For example, when installed in a place where there is a large difference in traffic due to the time zone, the display device may function as an information display in a time zone where there is a lot of traffic. It may not be necessary to function as an information display. In addition, a large information display increases power consumption. For this reason, it is demanded to save power of the information display. The present invention proposes, for example, a display device that can use the display area more effectively in the above situation.

Here, the newly proposed display device includes a display panel for displaying an image; a photoelectric conversion panel for converting received light into electric power; and a display panel facing the front of the device in a predetermined region on the front of the device A switching mechanism that switches between a state in which the photoelectric conversion panel is disposed and a state in which the photoelectric conversion panel is disposed toward the front of the apparatus.

According to such a display device, it is possible to appropriately switch between a state in which the display panel is disposed toward the front of the device and a state in which the photoelectric conversion panel is disposed toward the front of the device. Accordingly, for example, in a busy time zone, the display panel can be made to function as an information display by facing the front of the apparatus. Further, in a time zone in which the screen is difficult to see because sunlight is irradiated on the front surface of the apparatus, power can be generated by switching to a state in which the photoelectric conversion panel is arranged toward the front surface of the apparatus. The generated power can be used as power for causing the information display to function, for example, by storing it in a storage battery.

In this case, the display panel and the photoelectric conversion panel may be arranged around a rotation axis provided so as to be orthogonal to a straight line extending toward the front of the apparatus. The switching mechanism may switch between a state in which the display panel is disposed toward the front of the apparatus and a state in which the photoelectric conversion panel is disposed toward the front of the apparatus by rotating the rotation shaft.

In the image display area variable display, a plurality of display devices are arranged so that the display panel can constitute one screen. Then, by controlling the switching mechanism of the display device, the state in which the display panel is disposed toward the front of the device and the state in which the photoelectric conversion panel is disposed toward the front of the device are switched. As a result, an image display area constituted by a plurality of display devices is changed.

In another embodiment, the display device is arranged with the display panel facing the front of the device in a predetermined area. In this case, the switching mechanism may switch between a state in which the photoelectric conversion panel overlaps the front side of the display panel and a state in which the photoelectric conversion panel is shifted from the front side of the display panel in a predetermined region.

Furthermore, in another configuration, in the display device, the photoelectric conversion panel is arranged facing the front of the device in a predetermined region. In this case, the switching mechanism may switch between a state where the display panel overlaps the front side of the photoelectric conversion panel and a state shifted from the front side of the photoelectric conversion panel in a predetermined region.

FIG. 1 is a diagram illustrating an example of a display device. FIG. 2 is a diagram illustrating an example of the display device. FIG. 3 is a diagram illustrating an example of a substantially triangular prism frame of the display device. FIG. 4 is a diagram illustrating an example of the display device. FIG. 5 is a flowchart illustrating an example of a control flow of the display device. FIG. 6 is a diagram showing another display device. FIG. 7 is a diagram illustrating another display device. FIG. 8 is a diagram showing another display device. FIG. 9 is a diagram illustrating an example of an image display area variable display. FIG. 10 is a diagram illustrating an example of an image display area variable display. FIG. 11 is a diagram illustrating an arrangement example of the light receiving sensors of the image display area variable display. FIG. 12 is a diagram illustrating an arrangement example of the light receiving sensors of the image display area variable display. FIG. 13 is a diagram illustrating an arrangement example of the light receiving sensors of the image display area variable display. FIG. 14 is a diagram illustrating an arrangement example of the light receiving sensors of the image display area variable display. FIG. 15 is a diagram illustrating an example of an image display area variable display. FIG. 16 is a diagram showing another image display area variable display. FIG. 17 shows another image display area variable display. FIG. 18 is a diagram showing another image display area variable display. FIG. 19 is a diagram showing another display device. FIG. 20 is a diagram illustrating another display device. FIG. 21 is a diagram showing another display device. FIG. 22 is a cross-sectional view showing another display device. FIG. 23 is a cross-sectional view showing another display device. FIG. 24 is a diagram showing another display device. FIG. 25 is a diagram illustrating another display device. FIG. 26 is a diagram showing another display device. FIG. 27 is a cross-sectional view showing another display device. FIG. 28 is a diagram showing another display device. FIG. 29 is a diagram showing another display device. FIG. 30 is a diagram showing another display device. FIG. 31 is a diagram showing another display device. FIG. 32 is a diagram showing another display device. FIG. 33 is a diagram showing another display device. FIG. 34 is a diagram showing another display device. FIG. 35 is a flowchart showing an example of a control flow of the image display area variable display. FIG. 36 is a flowchart showing an example of a control flow of the image display area variable display.

Hereinafter, a display device according to an embodiment of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected suitably to the member or site | part which has the same effect | action. The direction of the front surface of the display device is appropriately displayed as “Fr”.

The display device 10 includes a display panel 11, a photoelectric conversion panel 12, and a switching mechanism 13, as shown in FIG.

≪Display panel 11≫
The display panel 11 is a panel that displays an image. As this display panel 11, various flat panel displays, such as a liquid crystal display device and an organic EL display, can be used, for example. The display panel 11 may be a panel that displays an image, and is not limited to various flat panel displays such as a liquid crystal display device or an organic EL display that can change an image displayed by an electrical action, but a predetermined display. May be a panel (for example, a poster) on which is drawn. In this embodiment, the display panel 11 uses various flat panel displays capable of changing an image displayed by an electrical action.

≪Photoelectric conversion panel 12≫
The photoelectric conversion panel 12 is a panel that converts received light into electric power. As this photoelectric conversion panel 12, it can comprise with the panel in which the photoelectric conversion element was mounted, for example, the panel for photovoltaic power generation is employable.

The photoelectric conversion element used for the photoelectric conversion panel 12 is formed of a tandem thin film solar cell in which an amorphous silicon layer and a microcrystalline silicon layer are stacked. Here, the amorphous silicon layer includes an a-Si: Hp layer, an a-Si: Hi layer, and an a-Si: Hn layer. The microcrystalline silicon layer includes a μc-Si: Hp layer, a μc-Si: Hi layer, and a μc-Si: Hn layer. The structure of the photoelectric conversion element is not limited to this. Such a photoelectric conversion element can be produced, for example, by decomposing gaseous silicon by plasma discharge in a plasma CVD apparatus and laminating a thin silicon film on a transparent substrate. Such a photoelectric conversion element can utilize a silicon thin film technology necessary for manufacturing a liquid crystal panel. For this reason, the photoelectric conversion panel 12 and the display panel 11 can achieve sharing of production facilities and can be efficiently produced.

In addition, the structure of the photoelectric conversion element is not limited to the above, and various forms of structures such as a single-junction cell, a monolithic multi-junction cell, and a mechanical stack type in which various solar cells having different wavelength sensitivity regions are connected are applied. can do. Further, the photoelectric conversion element is not limited to a thin film type, and may be a crystal type element. Further, the photoelectric conversion element may be provided with an appropriate antireflection film on the surface of the photoelectric conversion element in order to reduce the light reflectance in the sensitivity wavelength region. Furthermore, a UV reflection film, an infrared reflection film, or the like that reflects light in a wavelength region other than the sensitivity wavelength region of the photoelectric conversion element may be provided.

This display device 10 is provided with a rotation axis d so as to be orthogonal to a straight line L extending toward the front surface Fr of the device. A display panel 11 and a photoelectric conversion panel 12 are arranged around the rotation axis d.

In this embodiment, the display panel 11 and the photoelectric conversion panel 12 are arranged along the side surface of the triangular prism set around the rotation axis d. Specifically, the display device 10 includes a substantially triangular prism frame 20 as illustrated in FIGS. 3 and 4, for example. As shown in FIG. 3, beam members 23 to 25 are bridged between corners of substantially triangular support plates 21 and 22 arranged on both sides of the frame body 20. The substantially triangular support plates 21 and 22 arranged on both sides are provided with a rotation axis d toward the outside. In the display device 10, the display panel 11 and the photoelectric conversion panel 12 are arranged on the peripheral side surface of the frame body 20. As shown in FIG. 4, the display panel 11 and the photoelectric conversion panel 12 are attached to the beam members 23 to 25 (see FIGS. 1 and 3).

In the display device 10, as shown in FIG. 1, for example, when an image is to be displayed in a predetermined area of the device front surface Fr, the display device 10 is displayed with the display panel 11 facing the device front surface Fr. It is good to arrange. In addition, as shown in FIG. 2, when it is desired to generate electric power by photoelectric conversion, the photoelectric conversion panel 12 may be arranged facing the apparatus front surface Fr. When the photoelectric conversion panel 12 is arranged toward the device front surface Fr, the photoelectric conversion panel 12 may be inclined at an appropriate angle with respect to the device front surface Fr according to the height of the sun.

≪Switching mechanism 13≫
The switching mechanism 13 switches between a state in which the display panel 11 is disposed toward the device front surface Fr and a state in which the photoelectric conversion panel 12 is disposed toward the device front surface Fr in a predetermined region of the device front surface Fr. Mechanism. In this embodiment, as shown in FIGS. 1 and 2, the switching mechanism 13 rotates the rotation axis d so that the display panel 11 is disposed toward the device front surface Fr, and the photoelectric conversion panel 12 is the device. The state of being arranged toward the front surface Fr can be switched.

As described above, the display device 10 includes the display panel 11 for displaying an image; the photoelectric conversion panel 12 for converting received light into electric power; and the display panel 11 in the predetermined region of the device front surface Fr. And a switching mechanism 13 for switching between a state in which the photoelectric conversion panel 12 is disposed toward the apparatus front surface Fr.

According to this display device 10, as shown in FIG. 1, the display panel 11 is arranged toward the device front surface Fr, and as shown in FIG. 2, the photoelectric conversion panel 12 is arranged toward the device front surface Fr. It is possible to appropriately switch between these states.

The display device 10 can be placed outdoors, for example. In this case, depending on the time of day, there may be a case where the screen of the display panel 11 becomes difficult to see due to strong sunlight hitting the front surface Fr. Further, in such a time zone, power generation using sunlight can be performed efficiently, but the displayed image is difficult to see. According to such a display device 10, in a time zone in which sunlight is strongly applied and the screen of the display panel 11 is difficult to see, as shown in FIG. 2, the photoelectric conversion panel 12 is arranged toward the device front surface Fr to generate power. be able to. On the other hand, in a time zone in which the screen is easy to see on the device front surface Fr, as shown in FIG. 1, the display panel 11 can be arranged facing the device front surface Fr on the device front surface Fr to display an image. Thus, the display device 10 can be used in an appropriate manner depending on the situation of the device front surface Fr.

Thus, for example, in a busy time zone, as shown in FIG. 1, the display panel 11 can be made to function as an information display by facing the front surface Fr of the apparatus. Moreover, in the time zone when the device front surface Fr is irradiated with sunlight and the screen is difficult to see on the device front surface Fr, for example, power can be generated by directing the photoelectric conversion panel 12 toward the device front surface Fr. The electric power generated by the photoelectric conversion panel 12 can be stored in a storage battery (not shown), and can be used as information display power.

<< Switching control unit 13a >>
Next, control of the switching mechanism 13 will be described. In this embodiment, the display device 10 includes a switching control unit 13 a that controls the switching mechanism 13.

<< Light receiving sensor 13a1 >>
In this embodiment, as shown in FIGS. 1 and 2, the display device 10 includes a light receiving sensor 13 a 1 that receives external light emitted toward the device front surface Fr. The switching control unit 13a is configured to control the switching mechanism 13 based on the light reception information obtained by the light receiving sensor 13a1. The display device control method includes, for example, a light reception information acquisition step of acquiring light reception information by the light reception sensor 13a1, a state in which the display panel 11 is arranged toward the device front surface Fr, and a photoelectric conversion panel 12 on the device front surface Fr. It is good to provide the switching step which switches the state arranged toward. Here, the switching step may be performed based on the light reception information acquired in the light reception information acquisition step.

In this case, for example, the switching control unit 13a detects the intensity of light irradiated on the apparatus front surface Fr based on the light reception information, and the detected light intensity is higher than a predetermined value (threshold A). In this case, the photoelectric conversion panel 12 can be controlled so as to be disposed toward the front surface Fr of the apparatus. Thereby, when sunlight hits the apparatus front surface Fr strongly and it becomes difficult to see the screen of the display panel 11, it can arrange | position the photoelectric conversion panel 12 toward the apparatus front surface Fr, and can generate electric power.

When the intensity of light detected by the light receiving sensor 13a1 is lower than a predetermined value (threshold value B), the display panel 11 is arranged toward the front surface Fr of the apparatus, and an image is displayed on the display panel 11. The display device 10 may be controlled so as to be displayed. As a result, when strong light is not applied to the device front surface Fr and the screen of the display panel 11 is easy to see, the display panel 11 can be arranged facing the device front surface Fr to display an image.

Incidentally, in the configuration in which the switching control unit 13a controls the switching mechanism 13 based on the light reception information obtained by the light receiving sensor 13a1, for example, a shadow may be generated on the apparatus front surface Fr due to some influence. Then, it is considered that there is a possibility that the display panel 11 and the photoelectric conversion panel 12 may be unnecessarily switched when the light reception information detected by the light reception sensor 13a1 changes due to a shadow on the front surface Fr of the apparatus.

For this reason, the threshold value A set when switching the panel arranged toward the apparatus front surface Fr from the display panel 11 to the photoelectric conversion panel 12 and the threshold value B set when switching from the photoelectric conversion panel 12 to the display panel 11 Should be set to different values.

Thereby, even when the light reception information obtained by the light reception sensor 13a1 fluctuates finely in the vicinity of the threshold, it is possible to prevent an event in which the display panel 11 and the photoelectric conversion panel 12 are switched each time. Further, a timer may be further set so that the state is maintained for a certain period after the display panel 11 and the photoelectric conversion panel 12 are switched. Thereby, the display panel 11 and the photoelectric conversion panel 12 can be switched stably.

<< Timer 13a2 >>
As another configuration of the switching control unit 13a, for example, as shown in FIG. 1, the display device 10 includes a state in which the display panel 11 is disposed toward the device front surface Fr, and a photoelectric conversion panel 12 in the device front surface Fr. The timer 13a2 in which the timing which switches to the state arrange | positioned toward may be set may be provided.

For example, there is a time zone in which the screen F of the display panel 11 is difficult to see due to strong sunlight hitting the front surface Fr. In consideration of such a time zone, the timer 13a2 sets the timing for switching between the state in which the display panel 11 is disposed toward the front surface Fr and the state in which the photoelectric conversion panel 12 is disposed toward the front surface Fr. Good.

Thereby, the switching control unit 13a controls the switching mechanism 13 based on the timer 13a2, so that the photoelectric conversion panel 12 is in a time zone in which sunlight is strongly applied to the front surface Fr and the screen of the display panel 11 is difficult to see. Can be arranged toward the front surface Fr of the apparatus. Then, at the timing set in the timer 13a2, it is possible to switch from the state in which the photoelectric conversion panel 12 is disposed toward the device front surface Fr to the state in which the display panel 11 is disposed toward the device front surface Fr.

Further, the control of the switching mechanism 13 based on the timer 13a2 and the control of the switching mechanism 13 based on the light reception information obtained by the light receiving sensor 13a1 can be combined. FIG. 5 is a flowchart showing an example of such control.

In this control, first, as shown in FIG. 5, the current time (t) is acquired from the clock function incorporated in the display device 10 (S1). Next, the acquired current time (t) is included in the time zone (t1 to t2) set in the timer 13a2 as the time zone in which sunlight hits the front surface Fr of the apparatus and the screen of the display panel 11 becomes difficult to see. (T 判定 す る (t1 to t2)) is determined (S2). Next, based on the time zone set by the timer 13a2, the current time (t) is included in the time zone (t1 to t2) in which the screen on the display panel 11 is difficult to see due to strong sunlight hitting the front surface Fr of the apparatus. Is determined (YES), it is further determined whether the light reception information (v) obtained by the light reception sensor 13a1 is higher than the threshold value (v1) (S3). Then, based on this determination, when it is determined that light stronger than a predetermined threshold value (v1) is received (YES), control is performed so that the photoelectric conversion panel 12 is disposed toward the front surface Fr of the apparatus. (S4). In the determination process (S2), when it is determined that the acquired current time (t) is not included in the time zone (t1 to t2) set in the timer 13a2 (NO), the determination process In (S3), when it is determined that the light reception information (v) obtained by the light reception sensor 13a1 is not higher than the threshold value (v1) (NO), the display panel 11 is arranged facing the front surface Fr of the apparatus. (S5). Then, the processes of S1 to S5 are repeated.

According to the control shown in FIG. 5, in the time zone (t1 to t2) set by the timer 13a2 as the time zone in which the screen of the display panel 11 is difficult to see due to sunlight, sufficient light is actually applied to the front surface Fr of the apparatus. In this case, the photoelectric conversion panel 12 is controlled so as to be arranged toward the front surface Fr of the apparatus. By this control, for example, even in the time zone (t1 to t2) set by the timer 13a2 as a time zone in which the screen of the display panel 11 is difficult to see due to sunlight, the influence of sunlight is affected on a cloudy day. If it is weak, the display panel 11 is arranged toward the front surface Fr of the apparatus. Thereby, an image can be displayed on the display panel 11. As described above, in the control for switching between the state in which the display panel 11 is disposed toward the apparatus front surface Fr and the state in which the photoelectric conversion panel 12 is disposed toward the apparatus front surface Fr, more appropriate control according to the situation becomes possible. .

In addition, the control by the timer 13a2 can change the display contents when there are many people viewing the display device 10 and when the age group and gender of the viewers are different depending on the time zone. For example, in a downtown area, the age group and sex of the person who views the display device 10 may differ depending on holidays, weekdays, and time zones. For this reason, the display panel 11 is controlled to be arranged on the front surface Fr of the device according to a preset day of the week or time, and an image suitable for the age group and gender of the person who views the display device 10 is displayed on the display panel 11. Can be displayed. Further, in the display device 10, the photoelectric conversion panel 12 can be appropriately disposed on the front surface Fr of the device.

<< Display device 10A >>
FIG. 6 shows another display device 10A. As shown in FIG. 6, the display device 10 </ b> A has the display panel 11 and the photoelectric conversion panel 12 overlapped with the display surface 11 a 1 of the display panel 11 and the light receiving surface 12 a 1 of the photoelectric conversion panel 12 facing outward. Yes. In the example shown in FIG. 6, the display panel 11 and the photoelectric conversion panel 12 are stacked so as to sandwich the rotation axis d. In this case, a unit in which the display panel 11 and the photoelectric conversion panel 12 are stacked may be rotated around the rotation axis d. As a result, in a predetermined region of the device front surface Fr, the state in which the display panel 11 is disposed toward the device front surface Fr and the state in which the photoelectric conversion panel 12 is disposed toward the device front surface Fr can be switched. it can. As described above, the display panel 11 and the photoelectric conversion panel 12 are overlapped so that the display surface 11a1 of the display panel 11 and the light receiving surface 12a1 of the photoelectric conversion panel 12 face each other. It can be realized with a simple configuration.

<< Display device 10B >>
7 and 8 show another display device 10B. As shown in FIG. 7, the display device 10 </ b> B includes a display panel 11, a photoelectric conversion panel 12, and a condensing lens 16 that collects light toward the photoelectric conversion panel 12 around the rotation axis d. Yes.

In this embodiment, as shown in FIGS. 7 and 8, the display panel 11 is arranged along at least one side surface of the triangular prism set around the rotation axis d. The condenser lens 16 is disposed along the other side surface of the triangular prism. Further, the photoelectric conversion panel 12 is arranged at the corner inside the triangular prism facing the condenser lens 16. The light receiving surface of the photoelectric conversion panel 12 is directed to the condenser lens 16.

In this case, the switching mechanism 13 rotates the rotation axis d as shown in FIG. 8, and the display panel 11 is arranged toward the front surface Fr of the apparatus, and the condensing lens 16 as shown in FIG. Is switched to the state of being arranged toward the front surface Fr of the apparatus. In a state where the condenser lens 16 is disposed toward the front surface Fr of the apparatus, the light collected by the condenser lens 16 enters the photoelectric conversion panel 12. In the state where the condenser lens 16 is arranged toward the front surface Fr of the apparatus, as shown in FIG. 7, the light incident on the condenser lens 16 from the front surface Fr side of the apparatus is collected on the photoelectric conversion panel 12 through the condenser lens 16. It is done. Thereby, the photoelectric conversion panel 12 can generate electric power based on the light incident on the condenser lens 16 from the apparatus front surface Fr side.

≪Condenser lens 16≫
As the condenser lens 16, for example, a biconvex lens, a plano-convex lens, or a Fresnel lens can be used. A Fresnel lens having a flat incident surface for receiving sunlight and a substantially triangular cross section for emitting sunlight toward the photoelectric conversion panel 12 is easy to handle in terms of weight, cost, and usage environment. For the condenser lens 16, for example, thin glass, weather-resistant acrylic, polycarbonate, or the like generally used for a normal solar cell module (solar power generation system) or the like can be used. In addition, the material of the condensing lens 16 is not limited to the above, and these materials may have a multilayer structure. As the condensing lens 16, it is preferable to select a condensing lens 16 that has a high transmittance of sensitive wavelength light of a solar cell element used in the photoelectric conversion panel 12 and has weather resistance. In addition, an appropriate ultraviolet absorber may be added to these materials for the purpose of preventing ultraviolet degradation of the condenser lens 16 itself and other members.

In this case, as shown in FIG. 7, since the light can be collected by the condenser lens 16, the photoelectric conversion panel 12 can be made small. The photoelectric conversion panel 12 is more expensive than the condenser lens 16. For this reason, compared with the case where the photoelectric conversion panel 12 is arranged on one side surface of the triangular prism set around the rotation axis d (see FIG. 2), the display device 10 is manufactured in the form using the condenser lens 16. Cost can be kept low.

Further, the display device 10 can be miniaturized, and for example, can be configured as a triangular prism having one side of a triangle on both sides of about several cm (for example, about 1 cm to 5 cm). Then, by arranging a plurality of display devices 10, it is possible to configure an image display area variable display that can change the image display area more finely.

<< Image display area variable display 200 >>
9 and 10 are plan views showing an image display area variable display 200 in which a plurality of display devices 10 are arranged.

As shown in FIGS. 9 and 15, the image display area variable display 200 has a plurality of display devices 10 arranged so that the display panel can constitute one screen. The image display area variable display 200 includes an image display area changing unit 210 that changes an image display area constituted by the plurality of display devices 10.

<< Image Display Area Changing Unit 210 >>
The image display area changing unit 210 controls the switching mechanism 13 of each display device 10. As a result, the image display area changing unit 210 switches between the state in which the display panel 11 is disposed toward the device front surface Fr and the state in which the photoelectric conversion panel 12 is disposed toward the device front surface Fr. The image display area of the variable display 200 is changed.

The image display area changing unit 210 can set an image display area in an arbitrary area of the image display area variable display 200. For example, as shown in FIG. 9, the image display area A can be set on the upper right side of the image display area variable display 200. Further, as shown in FIG. 10, the image display area changing unit 210 can set the image display area A at the lower part of the image display area variable display 200.

In this case, the image display area changing unit 210 may control the display device 10 in the image display area A so that the display panel 11 faces the front surface Fr of the device. At this time, outside the image display area A, the display device 10 may be controlled so that the photoelectric conversion panel 12 faces the device front surface Fr. Thus, one image can be displayed in the image display area A, and power can be generated by the photoelectric conversion panel 12 outside the image display area A.

<< Light receiving sensor 220 >>
Hereinafter, various forms of the image display area variable display 200 will be exemplified.
For example, as shown in FIG. 9, the image display area variable display 200 may include a light receiving sensor 220 that receives external light applied to the apparatus front surface Fr. In this case, the image display area changing unit 210 may change the image display area A based on the light reception information obtained by the light receiving sensor 220. 9 and 10, the light receiving sensor 220 is provided on the frame 201 of the image display area variable display 200.

<< Other arrangement examples of the light receiving sensor 220 >>
FIG. 11 shows another arrangement example of the light receiving sensors 220 of the image display area variable display 200. For example, as shown in FIG. 11, the light receiving sensor 220 may be provided at a plurality of positions on the side surface of the image display area variable display 200 on the apparatus front side Fr side. Thereby, sunlight can be detected at a plurality of positions of the image display area variable display 200. In the example shown in FIG. 11, the light receiving sensors 220 are provided at nine locations, that is, the central portion of the image display area variable display 200, up and down, left and right, and a pair of diagonal positions. Thereby, it is possible to detect which position of the image display area variable display 200 is strongly exposed to sunlight. Then, the image display area A (see FIG. 9) can be set at a position suitable for visual recognition with respect to the image display area variable display 200. The light receiving sensors 220 may be provided at a plurality of positions of the image display area variable display 200 and are not limited to the example shown in FIG.

<< Control of Image Display Area Changing Unit 210 >>
In addition, the image display area changing unit 210 is arranged so that the photoelectric conversion panel 12 is placed toward the front surface Fr of the apparatus at a position where light reception information exceeding a predetermined reference value is obtained. May be changed. Thereby, since the photoelectric conversion panel 12 can be arrange | positioned toward the apparatus front surface Fr in the position which sunlight has struck strongly, the image display area variable display 200 can generate electric power efficiently.

Further, the image display area changing unit 210, when the number of the light receiving sensors 220 from which the light receiving information exceeding the predetermined reference value is obtained is larger than the predetermined number, You may comprise so that the photoelectric conversion panel 12 may be arrange | positioned toward the apparatus front surface Fr.

For example, as shown in FIG. 11, light reception information exceeding a predetermined reference value may be obtained from many light reception sensors 220 among the plurality of light reception sensors 220 arranged in the image display area changing unit 210. In this case, it is considered that sunlight is generally strongly applied to the device front surface Fr of the image display area variable display 200. According to said structure, the photoelectric conversion panel 12 of all the display apparatuses 10 is arrange | positioned by the image display area change part 210 toward the apparatus front surface Fr. Thereby, the image display area variable display 200 can generate electric power efficiently.

Also, the central portion of the image display area variable display 200 is easy to enter the viewer's field of view. When strong light hits the central part of the image display area variable display 200 and it is difficult to see the image, even if the image display area is forcibly set except for the central part of the image display area variable display 200, the viewer is stressed. May cause. For this reason, the image display area changing unit 210, when the light reception information obtained from the light reception sensor 220 (c) disposed in the central portion of the image display area variable display 200 exceeds a predetermined reference value, You may control to arrange the photoelectric conversion panels 12 of all the display apparatuses 10 toward the apparatus front surface Fr. According to the above control, when the light reception information obtained from the light reception sensor 220 (c) disposed in the central portion of the image display area variable display 200 exceeds a predetermined reference value, all display devices are displayed. Ten photoelectric conversion panels 12 are arranged toward the front surface Fr of the apparatus. As a result, when strong light hits the central portion of the image display area variable display 200 and it is difficult to see the image, power can be generated using the entire image display area variable display 200 without forcibly displaying the image.

In addition, the image display area changing unit 210 performs predetermined processing when the light reception information exceeds the reference value when the light reception information obtained from the light reception sensor 220 continuously exceeds the reference value at a predetermined time. You may comprise so that it may perform.

For example, when the image display area variable display 200 is installed outdoors, a shadow may occur on the image display area variable display 200 due to the influence of clouds or the like even on a sunny day. In this case, the external light irradiated on the image display area variable display 200 is temporarily blocked. When the external light applied to the image display area variable display 200 is temporarily blocked, the received light information obtained by the light receiving sensor 220 is temporarily greatly changed. As described above, the luminance of the external light applied to the apparatus front surface Fr of the image display area variable display 200 may change rapidly in a short time.

At this time, the state in which the display panel 11 is disposed toward the device front surface Fr and the state in which the photoelectric conversion panel 12 is disposed toward the device front surface Fr are switched each time based on the light reception information that has temporarily changed greatly. It is done. In this way, when the state in which the display panel 11 is disposed toward the device front surface Fr and the state in which the photoelectric conversion panel 12 is disposed toward the device front surface Fr are switched each time, the image display area variable display 200 is The image cannot be displayed stably. In this case, the viewer may be stressed and the power generation efficiency is also deteriorated. For this reason, the image display area changing unit 210 performs predetermined processing when the light reception information exceeds the reference value when the light reception information obtained from the light reception sensor 220 continuously exceeds the reference value at a predetermined time. By configuring so as to perform the processing, it is possible to prevent the switching of the display device 10 from being performed unnecessarily.

At this time, the reference value may be set with respect to the difference of the light reception information obtained by the light reception sensor at different predetermined timings. In this case, it is possible to switch the display device 10 by reflecting the change over time of the light reception information obtained by the light reception sensor. According to the image display area changing unit 210, it is possible to prevent the display device 10 from being unnecessarily switched even when the brightness of the external light changes temporarily.

For example, when the image display area variable display 200 is strongly lit by sunlight, the light reception information acquired from the light receiving sensor 220 and the light reception information five minutes before when the shadow is temporarily made under the influence of clouds. The difference is calculated. In this case, when the sun is shining strongly, if the shadow is temporarily shaded after 5 minutes, the received light information obtained when the sun is shining strongly and the 5 minutes The difference from the later received light information becomes large. Further, when the shade continues under the influence of the cloud after 5 minutes, the difference between the received light information after 5 minutes and the received light information before 5 minutes becomes small. In this way, at a predetermined different timing, it is possible to determine whether or not the change in the light reception information obtained from the light reception sensor 220 is continued based on the difference in the light reception information obtained by the light reception sensor, and temporarily It is possible to prevent the display panel 11 from being arranged toward the device front surface Fr and the state in which the photoelectric conversion panel 12 is disposed from the device front surface Fr from being switched each time based on the greatly changed light reception information. In this case, the difference from the received light information five minutes ago is illustrated as the difference of the received light information obtained by the light receiving sensor at different predetermined timings. However, the predetermined different timing is limited to five minutes ago. It can be decided arbitrarily. For example, the difference between the received light information may be taken at a plurality of predetermined different timings, and a reference value may be set for the difference.

Further, as shown in FIGS. 9 and 10, in the image display area variable display 200 in which a plurality of display devices 10 are arranged, the light receiving sensor 220 may be provided in each display device 10. As a result, the light reception information can be obtained more finely on the device front surface Fr of the image display area variable display 200, and more appropriate switching control can be performed.

<< Other arrangement examples of the light receiving sensor 220 >>
The position where the light receiving sensor 220 is provided is not limited to the frame 201 of the image display area variable display 200. Hereinafter, various positions where the light receiving sensor 220 is provided will be exemplified. Here, FIG. 12 to FIG. 14 are along a line set so as to traverse or traverse one screen constituted by a plurality of display devices 10 (see FIG. 9 or FIG. 10) of the image display area variable display 200. In the figure, the light receiving sensor 220 is disposed.

For example, in the example shown in FIG. 12, one screen constituted by the plurality of display devices 10 of the image display area variable display 200 has a substantially square shape. The light receiving sensor 220 is arranged along lines L1 and L2 connecting intermediate points of at least two opposite sides of the four sides of the one screen.

In this case, the image display area variable display 200 can obtain the light reception information of the external light irradiated on the apparatus front surface Fr along the line connecting the intermediate points. In this case, the number of the light receiving sensors 220 can be reduced as compared with the case where the light receiving sensors 220 are respectively disposed on the plurality of display devices 10 (see FIG. 9 or 10) of the image display area variable display 200. Further, it is possible to simplify the circuit and wiring for acquiring the received light information of the external light, and the manufacturing cost can be kept low.

As shown in FIG. 12, when the image display area variable display 200 has a rectangular display area as a whole, a line L1 connecting the midpoints of the two short sides of the image display area variable display 200 is shown. A light receiving sensor 220 is arranged along the line. With the light receiving sensor 220 arranged along the line L1, the light receiving information of the external light in the longitudinal direction of the image display area variable display 200 can be obtained. As a result, it is possible to obtain light reception information that roughly reflects the luminance distribution of the external light that irradiates the entire image display area variable display 200. As shown in FIG. 12, in this embodiment, the image display area variable display 200 has the light receiving sensor 220 arranged along a line L <b> 2 connecting the middle points of the two long sides of the image display area variable display 200. Yes. With the light receiving sensor 220 arranged along the line L2, the light receiving information of the external light in the short direction of the image display area variable display 200 can be obtained.

In the form shown in FIG. 13, the image display area variable display 200 has one screen formed by a plurality of display devices 10 (see FIG. 9 or FIG. 10) having a substantially square shape. In this embodiment, the light receiving sensor 220 is disposed at the peripheral edge along two opposite sides (L3, L4) and (L5, L6) of the four sides of the image display area variable display 200.

Thereby, since the light receiving sensors 220 are generally distributed over the entire image display area variable display 200, it is possible to obtain light reception information that roughly reflects the luminance distribution of the external light that irradiates the entire image display area variable display 200. it can. In addition, the number of the light receiving sensors 220 can be reduced as compared with the case where the light receiving sensors 220 are respectively disposed on the plurality of display devices 10 (see FIG. 9 or 10) of the image display area variable display 200. In addition, a circuit and wiring for acquiring light reception information of external light can be simplified, and manufacturing costs can be reduced. Furthermore, the peripheral edges of the four sides of the image display area variable display 200 are portions that are difficult for the viewer to notice even if the light receiving sensor 220 is arranged when an image is displayed around the central portion of the image display area variable display 200. is there. In the form shown in FIG. 13, since the light receiving sensor 220 is not easily noticed by the viewer, the influence of the light receiving sensor 220 on the displayed image can be reduced.

In the example shown in FIG. 13, the light receiving sensors 220 are disposed on the peripheral portions of two opposite sides (L3, L4) and (L5, L6) of the four sides of the image display area variable display 200, respectively. The light receiving sensor 220 may be disposed only on the peripheral part of one of the two opposite sides (L3, L4), (L5, L6) of the four sides of the image display area variable display 200. Good.

Further, in the form shown in FIG. 14, the image display area variable display 200 has a substantially square shape on one screen constituted by a plurality of display devices 10 (see FIG. 9 or FIG. 10). The light receiving sensor 220 is arranged along the diagonal lines L7 and L8 of one screen.

In this case, the number of the light receiving sensors 220 can be reduced as compared with the case where the light receiving sensors 220 are respectively disposed on the plurality of display devices 10 (see FIG. 9 or 10) of the image display area variable display 200. In addition, a circuit and wiring for acquiring light reception information of external light can be simplified, and manufacturing costs can be reduced. In general, the light receiving sensors 220 are distributed over the entire image display area variable display 200. Therefore, it is possible to obtain light reception information that roughly reflects the luminance distribution of the external light that irradiates the entire image display area variable display 200. In the example shown in FIG. 14, the light receiving sensor 220 is arranged along each of the two diagonal lines L7 and L8 of one screen. However, the light receiving sensor 220 has two diagonal lines L7 and L8 of one screen. Of these, it may be arranged along only one of them.

<< Control of Image Display Area Changing Unit 210 >>
Next, as shown in FIGS. 11 to 14, the control of the image display area changing unit 210 in the case where the light receiving sensors 220 are provided at a plurality of positions of the image display area variable display 200 will be described.

The image display area changing unit 210 obtains a difference between light reception information obtained by a light reception sensor that is a predetermined reference among the light reception sensors 220 and light reception information obtained by other light reception sensors, and based on the difference. The image display area may be set. In this case, the image display area changing unit 210 accurately reflects the luminance distribution of the external light irradiated on the device front surface Fr of the image display area variable display 200 to reflect each display device 10 (see FIGS. 9 and 10). Can be controlled.

In this case, the reference light receiving sensor 220 may be set in advance. Further, how each display device 10 of the image display area variable display 200 is controlled with respect to the difference between the light reception information obtained by the reference light reception sensor 220 and the light reception information obtained by the other light reception sensors 220. This may be set in the image display area changing unit 210 in advance.

<< Other forms of the image display area variable display 200 >>
Hereinafter, other forms of the image display area variable display 200 will be described.
As described above, in the image display area variable display 200, a plurality of display devices 10 are arranged so that the display panel 11 (see FIG. 1) can form one screen. Then, by controlling the switching mechanism 13 of each display device 10, the display panel 11 is disposed toward the device front surface Fr (see FIG. 1), and the photoelectric conversion panel 12 is disposed toward the device front surface Fr. The switched state (see FIG. 2) is switched. The image display area variable display 200 includes an image display area changing unit 210 that changes an image display area A configured by a plurality of display devices 10.

<< Image display area change timer 230 >>
As shown in FIGS. 9 and 10, the image display area variable display 200 may include an image display area change timer 230 in which a time for changing the image display area A is set. In this case, the image display area changing unit 210 can set a predetermined image display area in a predetermined time zone based on the image display area change timer 230.

For example, in the first time zone set in the image display area change timer 230, each display device 10 of the image display area variable display 200 is in a state where the display panel 11 is arranged facing the front surface Fr of the device (FIG. 1). The image may be displayed on the entire image display area variable display 200. In other time zones, each display device 10 of the image display area variable display 200 is set in a state where the photoelectric conversion panel 12 is disposed toward the front surface Fr of the device (see FIG. 2), and the image display area variable display 200 is displayed. Alternatively, photoelectric conversion may be performed as a whole. In this case, for example, in a time zone in which sunlight hits the image display area variable display 200 well, the photoelectric conversion panel 12 of each display device 10 is in a state of being arranged toward the device front surface Fr (see FIG. 2). In addition, the image display area change timer 230 may be set.

<< Image Control Unit 240 >>
Further, as shown in FIGS. 9 and 10, the image display area variable display 200 is an image that changes the image displayed in the image display area A according to the image display area A changed by the image display area changing unit 210. A control unit 240 may be provided.

For example, when one image is displayed on the entire image display area variable display 200 and when an image is displayed on the image display area A set at the upper right of the image display area variable display 200 as shown in FIG. It is necessary to change the size of the image.

The image control unit 240 has a function of changing the size of an image displayed in the image display area in accordance with the image display area A (see FIG. 9) changed by the image display area changing unit 210. Thereby, as shown in FIG. 9, even when the size of the image display area A is changed, an image can be appropriately displayed.

Further, for example, when one image is displayed on the entire image display area variable display 200, and as shown in FIG. 10, an image is displayed in the image display area A set horizontally at the bottom of the image display area variable display 200. In this case, the aspect ratio (aspect ratio) changes greatly. For this reason, it is necessary to change the image itself.

<< Image Storage Unit 250 >>
The image display area variable display 200 includes an image storage unit 250 that stores a plurality of images including partial display images displayed on a part of one screen configured by the display device 10. In this case, the image control unit 240 is suitable for displaying in the image display area A from a plurality of images stored in the image storage unit 250 based on the image display area A changed by the image display area changing unit 210. An image can be selected and displayed in the image display area A. Thus, even when the image display area A is changed so that the aspect ratio changes greatly, an appropriate image can be displayed in the changed image display area A.

<< Image Display System 400, External Processing Apparatus 300 >>
Also, for example, as shown in FIGS. 9 and 10, an image display system 400 including an image display area variable display 200 and an external processing device 300 may be configured. The image display area variable display 200 and the external processing device 300 may include a communication device capable of communicating with each other. Further, for example, the external processing device 300 is configured to acquire information from the image display area variable display 200 and to control the image display area variable display 200 through a communication network such as the Internet that can communicate with each other. Good. Thus, for example, the image display area A can be changed or the image can be changed by so-called digital signage (digital signage) via the external processing device 300. Here, “digital signage” refers to an advertising medium that displays video and information on a flat display, projector, or the like using digital technology for display and communication.

In this case, the external processing device 300 is configured to send an image signal to be displayed in the image display area A to the image control unit 240 according to the image display area A changed by the image display area changing unit 210, for example. be able to. In this case, the image displayed on the image display area variable display 200 can be controlled by the external processing device 300.

The image display area variable display 200 includes a light receiving sensor 220 that receives external light irradiated on the front surface Fr of the apparatus. In this case, the external processing device 300 may set an image signal to be displayed in the image display area A based on the light reception information obtained from the light reception sensor 220. In this case, an appropriate image display area A can be set and an image can be changed through the external processing device 300 in accordance with the external light irradiated on the device front surface Fr of the image display area variable display 200.

<< Image change setting timer 310 >>
The external processing apparatus 300 includes an image change setting timer 310 in which a timing for changing an image signal displayed in the image display area A is set, and an image storage unit 320. The image storage unit 320 stores various images. In this case, the external processing apparatus 300 can change the image display area A at a predetermined timing set in the image change setting timer 310. For example, an image stored in the image storage unit 320 of the external processing device 300 can be used as the image displayed in the image display area A.

Further, the external processing device 300 can be configured to appropriately change the image to be displayed on the image display area variable display 200. In this case, for example, in a busy street, the image display area variable display 200 is changed so that the image to be displayed is changed in the morning commuting time on weekdays when there are many commuting people and the noon time on a holiday with many shoppers. Can be controlled. Thus, since the image displayed on the image display area variable display 200 can be changed by the external processing device 300, it is easy to provide an advertisement with a narrowed audience. As described above, the image display area A and the image can be changed through so-called digital signage via the external processing device 300.

The image display area variable display 200 includes a state in which the display panel 11 is disposed toward the front surface Fr of the apparatus (see FIG. 1) and a state in which the photoelectric conversion panel 12 is disposed toward the front surface Fr of the apparatus (see FIG. 1). 2), the state of each display device 10 can be switched. For this reason, in the time zone in which the advertisement is not displayed as described above, and in the time zone in which sunlight often hits the device front surface Fr of the image display area variable display 200, the photoelectric conversion panel 12 is connected to the device front surface Fr. The power can be generated by switching to the state (see FIG. 2) arranged toward the front.

<< Image Information Input Unit 260 >>
Further, as shown in FIGS. 9 and 10, the image display area variable display 200 includes an image information input unit 260 for inputting image information to be displayed on one screen configured by the plurality of display devices 10. Also good. For example, image information is input to the image information input unit 260 from the external processing device 300. Based on the image information input to the image information input unit 260, the image display area changing unit 210 sets an image display area A for displaying an image on one screen configured by the plurality of display devices 10. As described above, in the image display area variable display 200, the image display area A is set based on the image information input to the image information input unit 260 regardless of the light receiving sensor 220, the image display area change timer 230, or the like. Can be configured as follows.

In this case, the image display area changing unit 210 arranges the display panel 11 of the display device 10 facing the device front surface Fr in the image display area A among the plurality of display devices 10 of the image display area variable display 200. Also good. Furthermore, in this case, the image display area changing unit 210 may arrange the photoelectric conversion panel 12 of the display device 10 toward the device front surface Fr in an area excluding the image display area. Thus, an image can be displayed in the image display area A, and power generation by photoelectric conversion is performed in the area excluding the image display area A.

Further, the image display system 400 may configure the external processing device 300 so as to set an image signal to be sent to the image information input unit 260 based on light reception information obtained from the light reception sensor 220. In addition, the image change setting timer 310 of the external processing apparatus 300 may be set with a timing for changing the image signal sent to the image information input unit 260.

In the above-described embodiment, the image signal to be displayed on the image display area variable display 200 is sent to the image information input unit 260 of the image display area variable display 200 by the external processing device 300. Regardless of this configuration, for example, an image signal to be displayed on the image display area variable display 200 may be directly input to the image information input unit 260 of the image display area variable display 200.

Next, an example of a method for controlling the image display area variable display will be described.

Here, the image display area variable display 200 includes, for example, a display panel 11 and a photoelectric conversion panel 12 as shown in FIG. A plurality of display panels 11 are arranged so that one screen can be formed as described above. The photoelectric conversion panel 12 is arranged around a rotation axis d provided so as to be orthogonal to a straight line extending toward the device front surface Fr with respect to the plurality of display panels 11. For example, as shown in FIG. 35, the control method of the image display area variable display 200 includes a received light information acquisition step (S1), an image display area setting step (S2), and a switching step (S3). .

In the light reception information acquisition step (S1), the light reception information is acquired by the light reception sensor 220 that receives external light irradiated on the apparatus front surface Fr of the image display area variable display 200.
Next, in the image display area setting step (S2), the image display area A for displaying an image on the image display area variable display 200 is set based on the light reception information acquired in the light reception information acquisition step (S1).
In the switching step (S3), in the image display area A set in the image display area setting step (S2), the display panel 11 is placed toward the front surface Fr of the apparatus, and the image display area A Except that the photoelectric conversion panel 12 is arranged toward the front surface Fr of the apparatus.

Thereby, the image display area A can be set in an appropriate area based on the light reception information of the light receiving sensor 220 that has received the external light irradiated on the front surface Fr of the apparatus.

Next, another control method of the image display area variable display will be described.
Here, since the basic configuration of the image display area variable display 200 is the same, the description thereof is omitted. In this embodiment, as shown in FIG. 36, the control method of the image display area variable display 200 includes an image information input step (S1), an image display area setting step (S2), and a switching step (S3). Yes.

In the image information input step (S1), image information to be displayed on the image display area variable display 200 is input.
In the image display area setting step (S2), an image display area A for displaying an image on the image display area variable display 200 is set based on the image information input in the image information input step (S1).
In the switching step (S3), in the image display area A set in the image display area setting step (S2), the display panel 11 is placed toward the front surface Fr of the apparatus, and the image display area A Except that the photoelectric conversion panel 12 is arranged toward the front surface Fr of the apparatus.

<< Other forms of display device 10 and image display area variable display 200 >>
FIG. 16 shows a display device 10C according to another embodiment. In this display device 10C, as shown in FIG. 16, one display panel 11 and two photoelectric conversion panels 12a and 12b are arranged along the side surface of a triangular prism set around a rotation axis d.

<< Display device 10C >>
This display device 10C can be employed as the display device 10 of the above-described image display area variable display 200 (see FIG. 9). In this case, as shown in FIG. 16, the display devices 10C are arranged so that the display panels 11 of the plurality of display devices 10C can form one screen. In this case, as shown in FIG. 16, by directing the display panel 11 toward the device front surface Fr, the display device 10C can display an image toward the device front surface Fr.

Further, when the photoelectric conversion panels 12a and 12b are arranged toward the apparatus front surface Fr, as shown in FIG. 17, the rotation axis is set so that the corners of the two photoelectric conversion panels 12a and 12b are directed toward the apparatus front surface Fr. It is good to rotate d.

In this embodiment, as shown in FIG. 17, one photoelectric conversion panel 12a faces obliquely downward with respect to the device front surface Fr, and the other photoelectric conversion panel 12b faces obliquely upward with respect to the device front surface Fr. . In this way, the photoelectric conversion panels 12a and 12b are arranged in a corrugated shape that repeats peaks and valleys as a whole. In this case, as shown in FIG. 17, sunlight is irradiated to one photoelectric conversion panel 12b. The one photoelectric conversion panel 12b generates power by the irradiated sunlight. The sunlight irradiated to the one photoelectric conversion panel 12b is reflected toward the other photoelectric conversion panel 12a. The other photoelectric conversion panel 12a also generates power. For this reason, this display apparatus 10C can generate electric power efficiently using the irradiated sunlight.

<< Display device 10D >>
FIG. 18 shows a display device 10D according to still another embodiment. As shown in FIG. 18, in this display device 10D, two different types of display panels 11a and 11b and one photoelectric conversion panel 12 are arranged along a side surface of a triangular prism set around a rotation axis d. Yes. Examples of the two different display panels 11a and 11b include a display panel 11a for 2D display and a display panel 11b for 3D display. Here, the “display panel for 2D display” is a display panel that displays a 2D image, and the display panel for 3D display means a display panel that displays a 3D image. In order to view a 3D image displayed on the display panel 11b for 3D display, dedicated glasses may be required.

According to the display device 10D shown in FIG. 18, when displaying a two-dimensional image, the display panel 11a for 2D display may be arranged facing the front surface Fr of the device. In the case of displaying a 3D image, although not shown in the figure, the 3D display display panel 11b may be arranged facing the front surface Fr of the apparatus. Thereby, the image display area variable display 200 can switch a panel between the case of displaying a 2D video and the case of displaying a 3D video.

In addition, although the display panel 11a for 2D display and the display panel 11b for 3D display were illustrated as two different types of display panels arranged along the side surface of the triangular prism set around the rotation axis d, The two types of display panels are not limited to this.

The display device 10 according to the present invention has been described in various forms in which the display panel 11 and the photoelectric conversion panel 12 are arranged around the rotation axis d. However, the display device according to the present invention is limited to such a form. Not. Below, the display device which concerns on another form is demonstrated.

<< Display device 100 >>
19 to 21 show a display device 100 according to another embodiment. 22 is a sectional view taken along line XXII-XXII in FIG.

In this display device 100, as shown in FIG. 19 to FIG. 21, in a predetermined region C, the display panel 111 is arranged toward the front surface of the device (in this case, the normal direction of the paper). In the predetermined region C, the switching mechanism 113 shifts from the front side of the display panel 111 when the photoelectric conversion panels 112a to 112d overlap the front side of the display panel 111 (see, for example, FIGS. 20 and 21). The state is switched (for example, see FIG. 19).

In this embodiment, the display device 100 includes a plurality of photoelectric conversion panels 112a to 112d. In the display device 100, a plurality of sections C1 to C4 obtained by dividing a predetermined area C (area C in which the display panel 111 is arranged) are set. The plurality of photoelectric conversion panels 112a to 112d have shapes respectively corresponding to the plurality of sections C1 to C4. In addition, four sections C1 to C4 are set by dividing a predetermined area C (area C where the display panel 111 is arranged) vertically and horizontally at half positions. The switching mechanism 113 moves the plurality of photoelectric conversion panels 112a to 112d. In this embodiment, the switching mechanism 113 has a plurality of states in which the photoelectric conversion panels 112a to 112d overlap the front side of the display panel 111 and a state in which the photoelectric conversion panels 112a to 112d are displaced from the front side of the display panel 111. It is a mechanism for switching in each of the sections C1 to C4.

In this embodiment, the display device 100 is set with a plurality of sections C1 to C4 obtained by dividing a predetermined area C (area C where the display panel 111 is arranged). The plurality of photoelectric conversion panels 112a to 112d have shapes respectively corresponding to the plurality of sections C1 to C4. The display device 100 is not limited to such a form. Further, in this embodiment, four sections C1 to C4 are set by dividing a predetermined rectangular area C vertically and horizontally at half positions. The method of setting the sections C1 to C4 is not limited to such a form.

In this embodiment, the display device 100 includes an image display area changing unit 114 that changes the image display area by controlling the switching mechanism 113. Here, the image display area is an area where an image can be displayed on the display panel 111. In this embodiment, the image display area is partitioned by the sections where the photoelectric conversion panels 112a to 112d are displaced from the front side of the display panel 111 among the plurality of sections C1 to C4. In this embodiment, the image display area changing unit 114 controls the switching mechanism 113 to change the image display area constituted by sections in which the photoelectric conversion panels 112a to 112d are displaced from the front side of the display panel 111.

In this embodiment, as shown in FIGS. 19 and 22, in the display device 100, the display panel 111 is disposed toward the front surface Fr of the device in a predetermined region C. In this embodiment, a large rectangular display panel is used as the display panel 111. Further, as shown in FIG. 22, the display panel 111 is fitted in a recess 40 a provided in the wall 40. Further, as shown in FIGS. 19 to 21, the display panel 111 is set with four sections C1 to C4 that are divided vertically and horizontally at half positions. The photoelectric conversion panels 112a to 112d are configured with a shape and a size approximately corresponding to each of the sections C1 to C4.

In this embodiment, another photoelectric conversion panel 42 is disposed around the predetermined region C of the display device 100. As shown in FIG. 22, gaps 44 and 46 for moving the photoelectric conversion panels 112a to 112d are provided between the other photoelectric conversion panel 42 and the wall 40. As shown in FIGS. 19 to 22, each of the photoelectric conversion panels 112a to 112d moves to the gaps 44 and 46 when displaced from the front side of the display panel 111.

As described above, the switching mechanism 113 of the display device 100 is in a state in which the photoelectric conversion panels 112a to 112d overlap the front side of the display panel 111 with respect to the predetermined region C (see FIG. 21). The conversion panels 112a to 112d are switched to a state where the conversion panels 112a to 112d are displaced from the front side of the display panel 111 (see FIG. 19).

In such a form, as shown in FIGS. 19 to 21, the photoelectric conversion panels 112a to 112d are stacked on the front side of the display panel 111, or the photoelectric conversion panels 112a to 112d are shifted from the front side of the display panel 111. The range in which the display panel 111 displays an image can be changed.

<< Mode shown in FIG. 19 >>
Here, in the embodiment shown in FIG. 19, the photoelectric conversion panels 112a to 112d are displaced from the front side of the display panel 111 in all the sections C1 to C4 set in the area C where the display panel 111 is arranged. In this case, the display device 100 can display an image in all the sections C1 to C4 of the area C. The image display area is set in the area C.

<< Mode shown in FIG. 20 >>
In the mode illustrated in FIG. 20, the photoelectric conversion panels 112 a, 112 b, and 112 d overlap the front side of the display panel 111 in the sections C <b> 1, C <b> 2, and C <b> 4 in the region C where the display panel 111 is disposed. In the section C3, the photoelectric conversion panel 112c is displaced from the front side of the display panel 111. In this case, the display device 100 can display an image in the section C3. The image display area is set in the section C3. Further, in this aspect, in the sections C1, C2, and C4, power can be generated by the photoelectric conversion panels 112a, 112b, and 112d stacked on the front side of the display panel 111.

Thus, in this embodiment, the image display area changing unit 114 causes the photoelectric conversion panel 112c to be shifted from the front side of the display panel 111 in the section C3 in the image display area, as shown in FIG. Further, the image display area changing unit 114 makes the photoelectric conversion panels 112a, 112b, and 112d overlap the front side of the display panel 111 in the sections C1, C2, and C4 excluding the image display area. As a result, power can be generated in the sections C1, C2, and C4 excluding the image display area.

<< Mode shown in FIG. 21 >>
In the mode shown in FIG. 21, the photoelectric conversion panels 112a to 112d overlap the front side of the display panel 111 in all the sections C1 to C4 in the region C where the display panel 111 is arranged. In this embodiment, power can be generated by the photoelectric conversion panels 112a to 112d in the sections C1 to C4. As described above, the display device 100 can change the area (image display area) in which an image is displayed on the display panel 111.

<< Display device 101 >>
FIG. 23 shows a display device 101 according to another embodiment. The display panel 111 of the display device 101 includes a liquid crystal panel 120, a backlight 140, and a backlight control unit 160. Here, the backlight 140 is configured to irradiate the back surface of the liquid crystal panel 120 and to partially turn off the light applied to the back surface of the liquid crystal panel 120. The backlight control unit 160 is a control device that controls the backlight 140.

In this embodiment, the backlight control unit 160 has a portion where the photoelectric conversion panels 112a to 112d overlap the front side of the liquid crystal panel 120 when the photoelectric conversion panels 112a to 112d partially overlap the front side of the liquid crystal panel 120. The backlight 140 is partially turned off. For example, the backlight 140 may include a plurality of LEDs as a light source, and may be configured to be able to partially turn off the light applied to the back surface of the liquid crystal panel 120.

Further, in the display device 101 shown in FIG. 23, for example, when the photoelectric conversion panels 112a to 112d are displaced from the front side of the display panel 111 (see FIG. 19), the backlight control unit 160 includes all the sections C1. In ~ C4, the backlight 140 is turned on.

In contrast, when the photoelectric conversion panels 112a to 112d overlap the front side with respect to the sections C1, C2, and C4 of the display panel 111 (see FIG. 20), the display panel 111 displays an image in the section C3. . However, no image is displayed in the sections C1, C2, and C4 where the photoelectric conversion panels 112a to 112d overlap the front side. In this case, the backlight control unit 160 may turn off the backlight 140 in the sections C1, C2, and C4 and turn on only the section C3. As described above, in the form shown in FIG. 23, the backlight 140 may be partially extinguished at the portion where the photoelectric conversion panels 112a to 112d overlap the front side of the liquid crystal panel 120. As a result, the display device 100 can save power by reducing power consumption.

As described above, in the display devices 100 and 101 described above, as shown in FIGS. 19 to 22, the display panel 111 is arranged toward the front surface Fr of the device in the predetermined region C. Then, the state is switched between the state in which the photoelectric conversion panels 112a to 112d overlap the front side of the display panel 111 (see FIG. 21) and the state in which the photoelectric conversion panels 112a to 112d are displaced from the front side of the display panel 111 (see FIG. 19).

Next, a display device 100A according to another embodiment will be described. FIGS. 24 to 27 each show the display device 100A.

In this display device 100A, as shown in FIGS. 24 to 26, in a predetermined region C, the photoelectric conversion panel 112 is arranged toward the front surface Fr of the device. In the predetermined region C, the switching mechanism 113A has a state in which the display panels 111a to 111d overlap the front side of the photoelectric conversion panel 112 (see FIG. 26) and a state in which the display panel 111a to 111d deviates from the front side of the photoelectric conversion panel 112 ( (See FIG. 24).

In this embodiment, the display device 100A includes a plurality of display panels 111a to 111d. In this embodiment, the display device 100A is set with a plurality of sections C1 to C4 obtained by dividing a predetermined area C (area C in which the photoelectric conversion panel 112 is arranged). In this embodiment, four sections C1 to C4 are set by dividing a predetermined area C (area C where the photoelectric conversion panel 112 is disposed) vertically and horizontally at half positions. The display panels 111a to 111d have shapes corresponding to the sections C1 to C4, respectively.

The switching mechanism 113A moves the plurality of display panels 111a to 111d. In this embodiment, the switching mechanism 113A includes a plurality of states in which the display panels 111a to 111d overlap the front side of the photoelectric conversion panel 112 and a state in which the display panels 111a to 111d are displaced from the front side of the photoelectric conversion panel 112. It is a mechanism for switching in each of the sections C1 to C4.

In this embodiment, the display device 100A includes an image display area changing unit 114A that changes the image display area by controlling the switching mechanism 113A. Here, the image display area is an area in which an image can be displayed by the display panels 111a to 111d. In this embodiment, the image display area is partitioned by a partition in which the display panels 111a to 111d overlap the front side of the photoelectric conversion panel 112 among the plurality of partitions C1 to C4. In this embodiment, the image display area changing unit 114A changes the image display area by controlling the switching mechanism 113A.

In this embodiment, in the display device 100A, as shown in FIGS. 24 and 26, the photoelectric conversion panel 112 is arranged toward the device front surface Fr in a predetermined region C. In this embodiment, a large rectangular photoelectric conversion panel 112 is used. As shown in FIG. 27, the photoelectric conversion panel 112 is fitted in a recess 40 a provided in the wall 40. Further, in this embodiment, as shown in FIGS. 24 to 26, the photoelectric conversion panel 112 is set with four sections C1 to C4 that are divided vertically and horizontally at half positions. The display panels 111a to 111d are configured with a shape and size generally corresponding to the sections C1 to C4.

In this embodiment, another photoelectric conversion panel 42 is disposed around the predetermined region C of the display device 100A. The display panels 111 a to 111 d shifted from the front side of the photoelectric conversion panel 112 move to the back side of the other photoelectric conversion panels 42. In this embodiment, gaps 44A and 46A for moving the display panels 111a to 111d are provided between the other photoelectric conversion panel 42 and the wall 40 as shown in FIG. As shown in FIGS. 24 and 26, the display panels 111a to 111d move to the gaps 44A and 46A when the display panels 111a to 111d are displaced from the front side of the photoelectric conversion panel 112.

In this embodiment, the other photoelectric conversion panels 42 are not blocked by the display panels 111a to 111d shifted from the front side of the photoelectric conversion panel 112, and the power generation by the other photoelectric conversion panels 42 can be maintained. Thereby, in this display apparatus 100A, it is possible to stably generate power in a region around a predetermined region C (see FIG. 24).

As described above, the switching mechanism 113A of the display device 100A is in a state in which the display panels 111a to 111d overlap the front side of the photoelectric conversion panel 112 in each predetermined section of the region C (FIGS. 25 and 25). 26) and a state where the display panels 111a to 111d are displaced from the front side of the photoelectric conversion panel 112 (see FIGS. 24 and 25).

In such a form, as shown in FIGS. 24 to 26, the display panels 111a to 111d may be stacked on the front side of the photoelectric conversion panel 112, or the display panels 111a to 111d may be shifted from the front side of the photoelectric conversion panel 112. it can. Thus, the range in which images are displayed by the display panels 111a to 111d and the range in which power can be generated by the photoelectric conversion panel 112 can be changed.

<< Mode shown in FIG. 24 >>
Here, in the mode shown in FIG. 24, the display panels 111a to 111d are displaced from the front side of the photoelectric conversion panel 112 in all the sections C1 to C4 set in the region C where the photoelectric conversion panel 112 is arranged. In this case, the display device 100A can generate power in all the sections C1 to C4 of the region C by the photoelectric conversion panel 112.

<< Mode shown in FIG. 25 >>
In the mode shown in FIG. 25, the display panel 111c overlaps the front side of the photoelectric conversion panel 112 in the section C3 in the region C where the photoelectric conversion panel 112 is arranged. In the other sections C1, C2, and C4, the display panels 111a, 111b, and 111d are displaced from the front side of the photoelectric conversion panel 112. In this case, the display device 100A can display an image in the section C3. The image display area is set in the section C3. Further, in this aspect, in the sections C1, C2, and C4, the display panels 111a, 111b, and 111d are shifted from the front side of the photoelectric conversion panel 112, and the photoelectric conversion panel 112 can generate power.

As described above, the image display area changing unit 114A makes the display panel 111c overlap the front side of the photoelectric conversion panel 112 in the section C3 in the image display area as shown in FIG. Further, the image display area changing unit 114 shifts the display panels 111a, 111b, and 111d from the front side of the photoelectric conversion panel 112 in the sections C1, C2, and C4 excluding the image display area. As a result, power can be generated in the sections C1, C2, and C4 excluding the image display area.

<< Mode shown in FIG. 26 >>
In the mode shown in FIG. 26, the display panels 111a to 111d overlap the front side of the photoelectric conversion panel 112 in all the sections C1 to C4 in the region C where the photoelectric conversion panel 112 is arranged. In this aspect, the area C in which the photoelectric conversion panel 112 is arranged can display images by the display panels 111a to 111d. As described above, the display device 100A can change the area (image display area) in which an image is displayed by the display panels 111a to 111d.

In this embodiment, as shown in FIG. 27, each of the display panels 111a to 111d includes a liquid crystal panel 120A, a backlight 140A that irradiates the back surface of the liquid crystal panel 120A, and a backlight control unit that controls the backlight 140A. 160A. The backlight control unit 160A turns off the backlight 140A when the display panels 111a to 111d move to the back side of the other photoelectric conversion panels 42. For example, in the mode shown in FIG. 25, in the areas C1, C2, and C4 among the sections C1 to C4, the display panels 111a, 111b, and 111d are displaced from the front side of the photoelectric conversion panel 112, and are arranged around the area C, respectively. The other photoelectric conversion panel 42 has moved to the back side. In this case, when the backlight 140A is turned off for the display panels 111a, 111b, and 111d that are shifted from the front side of the photoelectric conversion panel 112 and moved to the back side of the other photoelectric conversion panels 42 arranged around the region C, respectively. Good. As a result, the display device 100A can save power by reducing power consumption.

As described above, in the display device 100, as shown in FIGS. 19 to 23, the photoelectric conversion panels 112a to 112d overlap the display panel 111 in the predetermined region C, and the photoelectric conversion panels 112a to 112d The state shifted from the front side of the display panel 111 is switched. Further, in the display device 100A of another form, as shown in FIGS. 24 to 27, the display panels 111a to 111d overlap the photoelectric conversion panel 112 in the predetermined region C, and the display panels 111a to 111a The state where 111d is shifted from the front side of the photoelectric conversion panel 112 is switched.

In this case, in the forms shown in FIGS. 19 to 23 or the forms shown in FIGS. 24 to 27, a plurality of sections C1 to C4 obtained by dividing a predetermined region C are set. The plurality of sections C1 to C4 obtained by dividing the predetermined area C are respectively configured to display an image on the display panel 111 or the display panels 111a to 111d, and to generate power on the photoelectric conversion panels 112a to 112d or the photoelectric conversion panel 112. It can switch to the mode to do.

≪Image display area, power generation area≫
In the display devices 100 and 100A, an area in which an image is displayed by the display panel 111 or the display panels 111a to 111d in the predetermined region C is referred to as an “image display area”. In addition, an area where power is generated by the photoelectric conversion panels 112a to 112d or the photoelectric conversion panel 112 is referred to as “power generation area”. For example, in the aspect of the display devices 100 and 100A shown in FIG. 20 or FIG. 25, the section C3 is an “image display area” in which an image is displayed by the display panel 111 or the display panels 111a to 111d, and the sections C1, C2, and C4 are displayed. Is a “power generation area” where power is generated by the photoelectric conversion panels 112a, 112b, 112d or the photoelectric conversion panel 112.

<< Light receiving sensor 180 >>
In this case, for example, as shown in FIG. 20 or FIG. 25, the display devices 100 and 100A may include a light receiving sensor 180 that receives external light irradiated on the front surface Fr of the device. The light reception information obtained by the light reception sensor 180 is sent to the image display area changing units 114 and 114A. In this case, the image display area changing units 114 and 114 </ b> A may change the image display area based on the light reception information obtained by the light receiving sensor 180.

The light receiving sensor 180 may be provided at a plurality of positions with respect to the predetermined region C. Since it is provided at a plurality of positions with respect to the predetermined area C, it is possible to appropriately detect the external light irradiated on the front surface of the apparatus in the predetermined area C.

For example, in the form shown in FIG. 19, the light receiving sensors 180 are provided at a plurality of positions around a predetermined region C where the display panel 111 is disposed. In this embodiment, as shown in FIG. 22, another photoelectric conversion panel 42 is arranged around the predetermined region C. When the photoelectric conversion panels 112a to 112d are displaced from the front side of the display panel 111, they move to the back side of the other photoelectric conversion panels 42. In this embodiment, as shown in FIG. 19, the light receiving sensor 180 is provided in another photoelectric conversion panel 42 arranged around the predetermined region C. Thus, external light can be received without hindering the movement of the photoelectric conversion panels 112a to 112d.

For example, in the form shown in FIG. 24, the light receiving sensors 180 are provided at a plurality of positions around a predetermined region C where the photoelectric conversion panel 112 is disposed. In this embodiment, as shown in FIG. 27, another photoelectric conversion panel 42 is arranged around the predetermined region C. The display panels 111 a to 111 d move to the back side of the other photoelectric conversion panels 42 when they are shifted from the front side of the photoelectric conversion panel 112. In this embodiment, as shown in FIG. 24, the light receiving sensor 180 is provided in another photoelectric conversion panel 42 arranged around the predetermined region C. Thus, external light can be received without hindering the movement of the display panels 111a to 111d.

As shown in FIG. 19 or FIG. 24, the image display area changing units 114 and 114A are arranged in the photoelectric conversion panels 112a to 112d in the sections C1 to C4 corresponding to the positions where the received light information exceeding the predetermined reference value is obtained. Alternatively, a power generation area where power generation is performed by the photoelectric conversion panel 112 may be set. As a result, when the display devices 100 and 100A are installed outdoors, the photoelectric conversion panels 112a to 112d or the photoelectric conversion panel 112 can generate power in the section C1 to C4 where sunlight is well applied. it can.

In addition, the image display area changing units 114 and 114 </ b> A are configured to change the predetermined area C when the number of the light receiving sensors 180 from which the light receiving information exceeding the predetermined reference value is obtained is larger than the predetermined number. All the sections C1 to C4 may be used as power generation areas. In this case, power is generated by the photoelectric conversion panels 112a to 112d or the photoelectric conversion panel 112 in the power generation area. *

For example, as shown in FIG. 19 or FIG. 24, light reception information exceeding a predetermined reference value can be obtained from many light reception sensors 180 out of a plurality of light reception sensors 180 arranged around a predetermined region C. There is a case. In this case, it is considered that the sunlight on the front surface Fr of the apparatus is generally strong. Therefore, the image display area changing units 114 and 114A may set all the sections C1 to C4 of the predetermined area C as power generation areas as shown in FIG. 21 or FIG. Thereby, the display devices 100 and 100A can generate power in all the sections C1 to C4 of the predetermined region C.

≪Example of arrangement of light receiving sensor 180≫
FIG. 28 shows another embodiment of the display devices 100 and 100A (see FIGS. 19 and 24). In this case, in the display devices 100 and 100A, as shown in FIG. 28, the light receiving sensor 180 (c) is arranged at least in the central portion of the predetermined region C. The image display area changing units 114 and 114A preliminarily detect when the light reception information obtained from the light reception sensor 180 (c) disposed in the central portion of the predetermined region C exceeds a predetermined reference value. All the sections C1 to C4 of the defined region C are set as power generation areas where power is generated by the photoelectric conversion panels 112a to 112d or the photoelectric conversion panel 112.

The central part of the display devices 100 and 100A is easy to enter the viewer's field of view when the display devices 100 and 100A display an image in the entire predetermined area C. Even if an image display area is set in the display devices 100 and 100A when strong light hits the central part of the display devices 100 and 100A and it becomes difficult to see the image, the viewer may be stressed. . In the form shown in FIG. 28, when the light reception information obtained from the light reception sensor 180 (c) arranged in the central portion of the predetermined region C exceeds a predetermined reference value, it is predetermined. All the sections C1 to C4 of the region C can be set as a power generation area where power is generated by the photoelectric conversion panels 112a to 112d or the photoelectric conversion panel 112. In this case, power generation is performed by the photoelectric conversion panels 112a to 112d or the photoelectric conversion panel 112 without forcibly displaying an image for all the sections C1 to C4 of the predetermined region C of the display devices 100 and 100A. Can be an area.

Further, as shown in FIG. 19, FIG. 24 or FIG. 28, the display devices 100 and 100A have the light reception information obtained from the light reception sensors 180 and 180 (c) continuously exceeding the reference value at a predetermined time. In this case, a predetermined process may be performed when the received light information exceeds the reference value.

For example, when the display devices 100 and 100A are installed outdoors, the display devices 100 and 100A may be shaded by the influence of clouds or the like even on a clear day. For this reason, the luminance of the external light irradiated on the device front surface Fr of the display devices 100 and 100A may change greatly. In such a case, the external light irradiated on the display devices 100 and 100A is temporarily blocked. When the external light applied to the display devices 100 and 100A is temporarily blocked, the light reception information obtained by the light reception sensors 180 and 180 (c) temporarily changes greatly. At this time, if the image display area is changed every time based on the light reception information that has changed greatly temporarily, the display devices 100 and 100A cannot stably display an image. In this case, the viewer may be stressed and the power generation efficiency is also deteriorated. Therefore, the image display area changing units 114 and 114A determine that the light reception information is the reference when the light reception information obtained from the light reception sensors 180 and 180 (c) continuously exceeds the reference value for a predetermined time. It is configured to perform a predetermined process when the value is exceeded. This can prevent the image display area from being changed unnecessarily.

Further, the reference value may be set with respect to the difference between the light reception information obtained by the light reception sensors 180 and 180 (c) at different predetermined timings. In this case, the image display area is changed to reflect the amount of change over time of the received light information obtained by the light receiving sensors 180 and 180 (c). According to the display devices 100 and 100A, it is possible to prevent the image display area from being unnecessarily changed even when the brightness of the external light changes temporarily.

<< Other arrangement examples of the light receiving sensor 180 >>
29 to 32 show other forms of the display devices 100 and 100A (see FIGS. 19 and 24). As shown in FIGS. 29 to 32, a plurality of light receiving sensors 180 may be arranged in a predetermined region C of the display devices 100 and 100A.

For example, as shown in FIG. 29, the light receiving sensor 180 may be provided in each of a plurality of sections C1 to C4. In this case, for each of the sections C1 to C4, the external light irradiated on the front surface Fr of the apparatus can be detected by the light receiving sensor 180, and an image display area can be appropriately set in the display devices 100 and 100A.

Further, for example, as shown in FIGS. 30 to 32, the light receiving sensor 180 may be arranged along a line set so as to cross or longitudinally cross a predetermined region C. For example, as shown in FIG. 30, when the predetermined area C of the display device 100, 100 </ b> A has a substantially square shape, the light receiving sensor 180 is an intermediate point between two opposite sides of the predetermined area C. May be arranged along the lines L1 and L2 connecting the two.

Further, for example, as shown in FIG. 31, the light receiving sensor 180 may be arranged at the peripheral edge portions along two opposite sides of the four sides of the predetermined region C having a substantially square shape. In the example shown in FIG. 31, the light receiving sensors 180 are arranged on the peripheral portions of two opposite sides (L3, L4) and (L5, L6) of the four sides of the predetermined region C of the display devices 100, 100A. Has been. The light receiving sensor 180 may be arranged only at the peripheral part of one of the two opposite sides (L3, L4) and (L5, L6) of the four sides of the predetermined region C. Good.

Further, for example, as shown in FIG. 32, the light receiving sensor 180 may be arranged along diagonal lines (L7, L8) of a predetermined region C having a substantially square shape. In the example shown in FIG. 32, the light receiving sensor 180 is disposed along each of the two diagonal lines L7 and L8 of the predetermined area C. However, the two diagonal lines L7 and L8 of the predetermined area C are provided. Among these, the light receiving sensor 180 may be arranged along only one of them.

In this case, in the display device 100 shown in FIG. 19, the photoelectric conversion panels 112a to 112d move to the respective sections C1 to C4 of the predetermined region C. In the display device 100A shown in FIG. 24, the display panels 111a to 111d move to the sections C1 to C4 of the predetermined area C. Therefore, as shown in FIGS. 29 to 32, when the light receiving sensor 180 is disposed in the predetermined region C of the display devices 100 and 100A, the photoelectric conversion panels 112a to 112d and the display panels 111a to 111a Even if 111d moves, it is good to comprise so that required light reception information may be obtained by the light reception sensor 180. FIG.

For example, in the display device 100 shown in FIG. 19, the light receiving sensor 180 may be provided at predetermined positions on both the display panel 111 and the photoelectric conversion panels 112a to 112d. In the display device 100A shown in FIG. 24, the light receiving sensor 180 may be provided at predetermined positions on both the display panels 111a to 111d and the photoelectric conversion panel 112. As described above, in the display devices 100 and 100A, it is preferable to be provided in both the display panels (111, 111a to 111d) and the photoelectric conversion panels (112a to 112d, 112). Thus, even if the photoelectric conversion panels 112a to 112d and the display panels 111a to 111d move, required light reception information can be obtained at predetermined positions of the display devices 100 and 100A by the light reception sensor 180.

As described above, when the light receiving sensor 180 is provided at a plurality of positions with respect to the predetermined region C, the image display area changing units 114 and 114A are predetermined among the plurality of light receiving sensors 180. A light receiving sensor as a reference may be determined. In this case, a difference between the light reception information obtained by the reference light reception sensor and the light reception information obtained by other light reception sensors may be obtained, and the image display area may be set based on the difference. Thereby, the image display area changing units 114 and 114A can accurately set the image display area by accurately reflecting the luminance distribution of the external light irradiated on the device front surface Fr of the display devices 100 and 100A.

<< Image display area change timer 185 >>
FIG. 33 shows another form of the display device 100 shown in FIG. 19 and the display device 100A shown in FIG. As illustrated in FIG. 33, the display devices 100 and 100A may include an image display area change timer 185 in which a time for changing the image display area is set. In this case, the image display area changing units 114 and 114A may be configured to set a predetermined image display area in a predetermined time zone based on the image display area change timer 185.

For example, in the first time zone set in the image display area change timer 185, as shown in FIGS. 19 and 26, the image display area is set in the entire predetermined area C of the display devices 100 and 100A. To do. In other time zones, as shown in FIGS. 20 and 25, an image display area is set in the section C3 of the display devices 100 and 100A. Further, in other time zones, as shown in FIGS. 21 and 24, the power generation area is set in the entire predetermined region C of the display devices 100 and 100A. In this case, for example, the image display area and the power generation area are set to an appropriate size and an appropriate position in a time zone when the display devices 100 and 100A are well exposed to sunlight, or in places where the display devices 100 and 100A are installed. It is good to constitute as described.

<< Image control unit 190 >>
Further, as illustrated in FIG. 33, the display devices 100 and 100A include an image control unit 190 that changes an image displayed in the image display area in accordance with the image display area changed by the image display area changing unit 114 and 114A. You may have.

For example, as shown in FIG. 19 or FIG. 26, the display devices 100 and 100A display one image in the entire predetermined region C, and as shown in FIG. 20 or FIG. , 100A needs to change the size of the image when displaying one image in a part of the section C3 in the predetermined region C. In this case, the image control unit 190 may have a function of changing the size of an image to be displayed according to the image display area changed by the image display area changing units 114 and 114A. Thereby, even when the size of the image display area is changed, the image can be appropriately displayed. Further, the image control unit 190 may change the size of the image displayed in the image display area according to the image display area changed by the image display area changing units 114 and 114A.

Further, the display devices 100 and 100A may include an image storage unit 192 that stores a plurality of images including partial display images displayed on a part of the display devices 100 and 100A. In this case, the image control unit 190 is suitable for displaying in the image display area from a plurality of images stored in the image storage unit 192 based on the image display area changed by the image display area changing units 114 and 114A. Images can be displayed in the image display area.

<< Image display system 450, external processing apparatus 350 >>
33, an image display system 450 including an external processing device 350 that can communicate with the display devices 100 and 100A may be configured. In this case, the external processing device 350 sends an image signal to be displayed in the image display area to the image control unit 190 according to the image display area changed by the image display area changing units 114 and 114A.

The display devices 100 and 100A may include a light receiving sensor 180 that receives external light applied to the front surface Fr of the device (see, for example, FIGS. 28 to 32). In this case, the external processing device 350 can be configured to set an image signal to be displayed in the image display area based on light reception information obtained from the light reception sensor 180 of the display devices 100 and 100A. Thereby, it is possible to change the image display area and the image in so-called digital signage via the external processing device 350. The external processing device 350 may be configured to acquire information from the display devices 100 and 100A and to control the display devices 100 and 100A through a communication network such as the Internet that can communicate with each other.

<< Image change setting timer 360 >>
In this embodiment, the external processing device 350 includes an image change setting timer 360 in which a timing for changing an image signal displayed in the image display area is set, and an image storage unit 370. The image storage unit 370 stores various images. In this case, the external processing device 350 can change the image display area A at a predetermined timing set in the image change setting timer 360. In this embodiment, for example, an image stored in the image storage unit 370 of the external processing device 350 can be used as the image displayed on the display devices 100 and 100A.

<< Image Information Input Unit 186 >>
As illustrated in FIG. 33, the display devices 100 and 100A may include an image information input unit 186 that inputs image information to be displayed in a predetermined region C. In this case, the image display area changing units 114 and 114A can set an image display area for displaying an image in a predetermined area based on the image information input to the image information input unit 186.

In this embodiment, image information is input to the image information input unit 186 from, for example, the external processing device 350. The image display area changing units 114 and 114A display an image in a predetermined area C composed of a plurality of sections C1 to C4 based on the image information input to the image information input unit 186. Set. As described above, the display devices 100 and 100A have the image information input to the image information input unit 186 regardless of the light receiving sensor 180 (see FIGS. 28 to 32), the image display area change timer 185 (see FIG. 33), or the like. The image display area can be configured based on the above.

Further, as shown in FIG. 33, the image information input unit 186 of the display devices 100 and 100A may be configured to receive an image signal to be displayed on the display devices 100 and 100A by the external processing device 350. . In this case, the external processing device 350 has an image information input unit based on the received light information obtained from the light receiving sensor 180 (see FIGS. 28 to 32) that receives the external light irradiated on the front surface Fr of the display devices 100 and 100A. An image signal to be sent to 186 may be set. Thereby, the external processing device 350 can display an appropriate image on the display devices 100 and 100A according to the external light irradiated on the device front surface Fr of the display devices 100 and 100A. In this case, the timing for changing the image signal to be sent to the image information input unit 186 may be set by the image change setting timer 360 of the external processing device 350.

<< Other forms of display device 100A >>
In the above-described embodiment, four sections C1 to C4 are set by dividing a predetermined rectangular area C vertically and horizontally at half positions. The method of setting the sections C1 to C4 is not limited to such a form. Further, no section may be set in the predetermined region C. For example, as shown in FIG. 34, in the display device 100A, a photoelectric conversion panel 112 in which a display panel 111 having substantially the same shape as the predetermined region C is arranged in the predetermined region C toward the device front surface Fr. On the front surface side, a configuration may be adopted in which it moves to an arbitrary position in a state of being overlapped with the photoelectric conversion panel 112 and a state of being shifted from the photoelectric conversion panel 112 (see FIG. 24). In this case, in the predetermined area C, an image can be displayed by the display panel 111 in a portion Ca (image display area) where the display panel 111 overlaps the front side of the photoelectric conversion panel 112. Further, in the portion Cb (power generation area) where the display panel 111 is shifted from the front side of the photoelectric conversion panel 112, the photoelectric conversion panel 112 can generate power. In addition, by moving the display panel 111 with respect to the photoelectric conversion panel 112, an image display area can be set at an arbitrary position in a predetermined region C.

In the above, various forms of the display devices 100 and 100A have been described. As described above, as shown in FIG. 33, the display devices 100 and 100A include display panels 111 and 111a to 111d that display images; photoelectric conversion panels 112 and 112a to 112d that convert received light into electric power; Mechanisms 113 and 113A (see FIGS. 19 to 21 and FIGS. 24 to 26).

Here, any one of the display panels 111 and 111a to 111d and the photoelectric conversion panels 112 and 112a to 112d may be disposed toward the device front surface Fr in a predetermined region of the device front surface Fr. . In addition, the switching mechanisms 113 and 113A are in a state where the other of the display panels 111 and 111a to 111d and the photoelectric conversion panels 112 and 112a to 112d overlaps the front side of one panel in a predetermined region C. And a state shifted from the front side of one panel. Accordingly, the switching mechanisms 113 and 113A switch between a state in which an image can be displayed by the display panels 111 and 111a to 111d and a state in which power can be generated by the photoelectric conversion panels 112 and 112a to 112d in the predetermined region C. Accordingly, the display devices 100 and 100A can change the image display area A in the predetermined region C.

In a preferred embodiment, a power generation area can be set in a predetermined area C excluding the image display area A. Thus, for example, in a busy time zone, the display panels 111, 111a to 111d can be made to function as an information display by facing the front surface Fr of the apparatus. Further, in a time zone in which the screen is difficult to see because the sunlight is irradiated on the front surface Fr of the device, power can be generated by switching to the state where the photoelectric conversion panels 112, 112a to 112d are arranged toward the front surface Fr of the device. it can. The generated power can be stored, for example, in a storage battery and used as power when the information display functions.

In this case, image display area changing units 114 and 114A as switching control units for controlling the switching mechanisms 113 and 113A may be provided. Here, the switching control units 114 and 114A, for example, are provided with a light receiving sensor 180 (see FIGS. 19 and 24) that receives external light irradiated on the front surface Fr of the apparatus, and in the light receiving information obtained by the light receiving sensor 180. Based on this, the switching mechanisms 113 and 113A can be controlled. Thereby, it is possible to perform control in consideration of the intensity of external light (for example, sunlight) irradiated on the apparatus front surface Fr. In such control, for example, a light reception information acquisition step of acquiring light reception information by the light reception sensor 180; and a switching mechanism is operated based on the light reception information acquired in the light reception information acquisition step, and a display panel is displayed in a predetermined region. A switching step of switching between a state in which an image can be displayed by 111 and 111a to 111d and a state in which power can be generated by the photoelectric conversion panels 112 and 112a to 112d.

In addition, a timer (in which a timing for switching between a state in which the display panels 111 and 111a to 111d are arranged toward the front surface Fr and a state in which the photoelectric conversion panels 112 and 112a to 112d are arranged toward the front surface of the apparatus is set ( An image display area change timer 185) may be provided. In this case, the image display area changing units 114 and 114A as switching control units may be configured to control the switching mechanism based on a timer (image display area changing timer 185). Accordingly, the display devices 100 and 100A can be set in an appropriate time zone by setting in advance a time zone in which sunlight is irradiated on the front surface Fr of the device and it is difficult to see or a time zone in which there is a lot of traffic and is used as an information display. Can be used in an appropriate manner.

Next, an example of the control method of the display devices 100 and 100A will be described.

Here, in the display device 100, for example, as shown in FIG. 19, in a predetermined region C, the display panel 111 is arranged toward the device front surface Fr. In the predetermined region C, the switching mechanism 113 shifts from the front side of the display panel 111 when the photoelectric conversion panels 112a to 112d overlap the front side of the display panel 111 (see, for example, FIGS. 20 and 21). The state is switched (for example, see FIG. 19). In the display device 100A, for example, as illustrated in FIG. 24, in a predetermined region C, the photoelectric conversion panel 112 is disposed toward the device front surface Fr. In the predetermined region C, the switching mechanism 113A is in a state where the display panels 111a to 111d overlap the front side of the photoelectric conversion panel 112 (see, for example, FIGS. 25 and 26) and from the front side of the photoelectric conversion panel 112. The state of deviation (for example, see FIGS. 24 and 25) is switched.

<< Control Method of Display Devices 100 and 100A >>
In this case, for example, as shown in FIG. 35, the control method of the display devices 100 and 100A includes a received light information acquisition step (S1), an image display area setting step (S2), and a switching step (S3). ing.

In the light reception information acquisition step (S1), the light reception information is acquired by the light reception sensor 180 (see FIGS. 28 to 32) that receives external light irradiated on the front surface Fr of the display device 100 or 100A.
Next, the image display area setting step (S2) sets an image display area (power generation area) for displaying an image on the display devices 100 and 100A based on the light reception information acquired in the light reception information acquisition step (S1). .
In the switching step (S3), the switching mechanisms 113 and 113A are operated, and the display panel 111, in the sections within the image display area set in the image display area setting step (S2) among the plurality of sections C1 to C4. 111a to 111d are in a state where images can be displayed, and the photoelectric conversion panels 112 and 112a to 112d are in a state where power can be generated in sections other than the image display area.

According to this control, an appropriate image display area (power generation area) can be set in the display devices 100 and 100A based on the light reception information of the light receiving sensor 180 that has received the external light irradiated on the front surface Fr of the device.

<< Other Control Methods of Display Devices 100 and 100A >>
Next, another control method of the display devices 100 and 100A will be described.
In this embodiment, the basic configurations of the display devices 100 and 100A are the same, and thus the description thereof is omitted here. In this embodiment, as shown in FIG. 36, the control method of the display devices 100 and 100A includes an image information input step (S1), an image display area setting step (S2), and a switching step (S3). .

In the image information input step (S1), image information to be displayed on the display devices 100 and 100A is input.
In the image display area setting step (S2), based on the image information input in the image information input step (S1), an image display area for displaying an image on the display devices 100 and 100A is set along a plurality of sections C1 to C4. Set.
In the switching step (S3), the switching mechanisms 113 and 113A are operated, and the display panel 111, in the sections within the image display area set in the image display area setting step (S2) among the plurality of sections C1 to C4. 111a to 111d are in a state where images can be displayed, and the photoelectric conversion panels 112 and 112a to 112d are in a state where power can be generated in sections other than the image display area.

According to this control, an appropriate image display area (power generation area) can be set in the display devices 100 and 100A based on the image information input to the display devices 100 and 100A.

As mentioned above, although various forms were demonstrated about the display apparatus, the image display area variable display, and the image display system, this invention is not limited to the form mentioned above.

For example, the specific configuration of the display device is not limited to the above. In the above-described various forms, for example, various known techniques can be employed for the display panel, the photoelectric conversion panel, the condenser lens, the liquid crystal display device, and the like. These specific configurations are not limited to the above. Moreover, each control mentioned above can be comprised so that it may be performed based on the preset program and control circuit. Each control can be realized by a computer including a calculation unit such as a CPU and a storage unit such as a nonvolatile memory.

10, 10A, 10B, 10C, 10D Display device 11, 11a, 11b Display panel 11a1 Display surface 12, 12a, 12b Photoelectric conversion panel 12a1 Light receiving surface 13 Switching mechanism 13a Switching control unit 13a1 Light receiving sensor 13a2 Timer 16 Condensing lens 20 Abbreviation Triangular prism frame 21 Support plate 40 Wall 40a Depression 42 Other photoelectric conversion panels 44, 44A, 46, 46A Gaps 100, 101, 100A Display devices 111, 111a- 111d Display panels 112, 112a-112d Photoelectric conversion panels 113, 113A Switching mechanism 114, 114A Image display area change unit 120, 120A Liquid crystal panel 140, 140A Backlight 160, 160A Backlight control unit 180 Light receiving sensor 185 Image display area change timer 186 Image information input unit 190 Image Control unit 192 Image storage unit 200 Image display area variable display 201 Frame 210 Image display area change unit 220 Light receiving sensor 230 Image display area change timer 240 Image control unit 250 Image storage unit 260 Image information input unit 300, 350 External processing device 310, 360 Image change setting timer 320, 370 Image storage unit 400, 450 Image display system A Image display area C Predetermined area C1-C4 Section d set in predetermined area d Rotation axis
Fr front

Claims (40)

1. Display panel for displaying images;
   A photoelectric conversion panel that converts received light into electric power; and
   A switching mechanism that switches between a state in which the display panel is disposed toward the front of the apparatus and a state in which the photoelectric conversion panel is disposed toward the front of the apparatus in a predetermined region on the front of the apparatus; .
2. A light receiving sensor for receiving external light irradiated on the front surface of the apparatus; and
   The display device according to claim 1, further comprising: a switching control unit that controls the switching mechanism based on light reception information obtained by the light receiving sensor.
3. A timer in which a timing for switching between a state in which the display panel is disposed toward the front of the apparatus and a state in which the photoelectric conversion panel is disposed toward the front of the apparatus is set; and
   The display device according to claim 1, further comprising: a switching control unit that controls the switching mechanism based on the timer.
4. The display panel and the photoelectric conversion panel are arranged around a rotation axis provided so as to be orthogonal to a straight line extending toward the front of the device,
   The switching mechanism switches between a state in which the display panel is disposed toward the front of the apparatus and a state in which the photoelectric conversion panel is disposed toward the front of the apparatus by rotating the rotation shaft. The display device described in 1.
5. The display device according to claim 4, wherein the display panel and the photoelectric conversion panel are overlapped so that a display surface of the display panel and a light receiving surface of the photoelectric conversion panel face each other.
6. The display device according to claim 4, wherein the display panel and the photoelectric conversion panel are arranged along a side surface of a triangular prism set around the rotation axis.
7. Around the rotation axis, the display panel, the photoelectric conversion panel, and a condenser lens that collects light toward the photoelectric conversion panel are disposed,
   The switching mechanism rotates the rotating shaft so that the display panel is disposed toward the front of the apparatus, and the condenser lens is disposed toward the front of the apparatus, and the photoelectric conversion panel passes through the condenser lens. The display device according to claim 4, wherein the display device switches between a state in which light is collected.
8. The display panel is disposed along at least one side surface of a triangular prism set around the rotation axis,
   A condenser lens is disposed along the other side surface of the triangular prism, and the photoelectric conversion panel is disposed at an inner corner of the triangular prism facing the condenser lens,
   The switching mechanism is
   A state in which the display panel is arranged toward the front of the apparatus by rotating the rotation shaft;
   5. The condenser lens according to claim 4, wherein the condenser lens is disposed toward a front surface of the apparatus, and a state in which light incident on the condenser lens from the front side of the apparatus is collected on a photoelectric conversion panel through the condenser lens. Display device.
9. The display device according to claim 4, wherein one display panel and two photoelectric conversion panels are disposed along a side surface of a triangular prism set around the rotation axis.
10. The display device according to claim 9, wherein two different types of display panels and one photoelectric conversion panel are arranged along a side surface of a triangular prism set around the rotation axis.
11. 11. The display device according to claim 10, wherein the two different types of display panels are configured by a display panel for 2D display and a display panel for 3D display.
12. A plurality of display devices according to any one of claims 4 to 11, wherein the display panels are arranged so as to constitute one screen; and
    By controlling each of the switching mechanisms of the display device, the display panel is switched between a state where the display panel is disposed toward the front of the device and a state where the photoelectric conversion panel is disposed toward the front of the device. An image display area variable display comprising: an image display area changing unit that changes an image display area constituted by a display device.
13. A light receiving sensor for receiving external light applied to the front surface of the device;
    The image display area variable display according to claim 12, wherein the image display area changing unit changes the image display area based on light reception information obtained by the light receiving sensor.
14. 14. The image display area variable display according to claim 13, wherein the light receiving sensor is provided at a plurality of positions of the image display area variable display.
15. The image display area changing unit changes the image display area so that the photoelectric conversion panel is arranged toward the front of the apparatus at a position where light reception information exceeding a predetermined reference value is obtained. The image display area variable display according to claim 14.
16. The image display area changing unit is configured to output the photoelectric conversion of all display devices when the number of the light receiving sensors from which the light receiving information exceeding the predetermined reference value is obtained is larger than the predetermined number. 15. The image display area variable display according to claim 14, wherein the panel is arranged toward the front of the apparatus.
17. The light receiving sensor is disposed at least in a central portion on the front surface of the image display area variable display,
    The image display area changing unit is configured to detect the photoelectric conversion of all display devices when light reception information obtained from a light reception sensor disposed in a central portion of the image display area variable display exceeds a predetermined reference value. 15. The image display area variable display according to claim 14, wherein the panel is arranged toward the front of the apparatus.
18. The image display area changing unit is configured to perform predetermined processing when the light reception information exceeds the reference value when the light reception information obtained from the light reception sensor continuously exceeds the reference value at a predetermined time. The image display area variable display according to any one of claims 15 to 17, wherein:
19. The image display area variable according to any one of claims 15 to 18, wherein the reference value is set with respect to a difference between light reception information obtained by the light reception sensor at different predetermined timings. display.
20. 20. The image display area variable display according to any one of claims 13 to 19, wherein the light receiving sensor is provided in each of the display devices.
21. 20. The light receiving sensor according to claim 13, wherein the light receiving sensor is arranged along a line set so as to cross or longitudinally cross the one screen configured by the plurality of display devices. Variable display area.
22. The one screen constituted by the plurality of display devices has a substantially square shape;
    The variable image display area display according to claim 21, wherein the light receiving sensor is arranged along a line connecting intermediate points of two opposite sides of the four sides of the one screen.
23. The one screen constituted by the plurality of display devices has a substantially square shape;
    The image display area variable display according to claim 21, wherein the light receiving sensor is arranged at a peripheral portion along two opposite sides of the four sides of the one screen.
24. The one screen constituted by the plurality of display devices has a substantially square shape;
    The variable image display area display according to claim 21, wherein the light receiving sensor is arranged along a diagonal line of the one screen.
25. The image display area changing unit obtains a difference between light reception information obtained by a predetermined light reception sensor of the light reception sensors and light reception information obtained by other light reception sensors, and based on the difference. The image display area variable display according to claim 14, wherein the image display area is set.
26. An image display area change timer in which a time for changing the image display area is set;
    13. The variable image display area display according to claim 12, wherein the image display area changing unit sets a predetermined image display area in a predetermined time zone based on the image display area change timer.
27. 27. The image control unit according to claim 12, further comprising: an image control unit that changes an image to be displayed in the image display area according to the image display area changed by the image display area changing unit. Image display area variable display.
28. The image display area variable display according to claim 27, wherein the image control unit changes a size of an image to be displayed in the image display area according to the image display area changed by the image display area changing unit.
29. An image storage unit storing a plurality of images including a partial display image displayed on a part of the one screen configured by the display device;
    The image control unit, based on the image display area changed by the image display area changing unit, displays an image suitable for displaying in the image display area from a plurality of images stored in the image storage unit. 29. The image display area variable display according to claim 27 or 28, wherein the display is a display area.
30. An image display area variable display according to claim 27; and
    An external processing device capable of mutual communication with the image display area variable display;
    The external processing apparatus sends an image signal to be displayed in the image display area to the image control unit according to the image display area changed by the image display area changing unit.
31. The image display area variable display includes a light receiving sensor that receives external light irradiated on the front surface of the apparatus,
    The image display system according to claim 30, wherein the external processing device sets an image signal to be displayed in the image display area based on light reception information obtained from the light reception sensor.
32. The image display system according to claim 30, wherein the external processing device includes an image change setting timer in which a timing for changing an image signal to be displayed in the image display area is set.
33. The image display area variable display according to claim 12,
    An image information input unit for inputting image information to be displayed on the one screen constituted by the plurality of display devices;
    The image display area changing unit sets an image display area for displaying an image on the one screen constituted by the plurality of display devices based on the image information input to the image information input unit. Variable area display.
34. The image display area changing unit arranges the display panel of the display device facing the front of the device in the image display area among the plurality of display devices, and the display device in an area excluding the image display area. 34. The image display area variable display according to claim 33, wherein the photoelectric conversion panel is arranged facing the front of the apparatus.
35. An image display area variable display according to claim 33 or 34; and
    An external processing device capable of mutual communication with the image display area variable display;
    The external processing device sends an image signal to be displayed on the image display area variable display to the image information input unit.
36. The image display area variable display includes a light receiving sensor that receives external light irradiated on the front surface of the apparatus,
    36. The image display system according to claim 35, wherein the external processing device sets an image signal to be sent to the image information input unit based on light reception information obtained from the light reception sensor.
37. 36. The image display system according to claim 35, wherein the external processing device includes an image change setting timer in which a timing for changing an image signal to be sent to the image information input unit is set.
38. Display panel for displaying images;
    Photoelectric conversion panel that converts received light into electric power;
    A switching mechanism that switches between a state in which the display panel is disposed toward the front of the apparatus and a state in which the photoelectric conversion panel is disposed toward the front of the apparatus in a predetermined region on the front of the apparatus; and
    A control method of a display device comprising: a light receiving sensor that receives external light irradiated on the front surface of the device,
    A light reception information acquisition step of acquiring light reception information by the light reception sensor; and
    A switching step of switching between a state in which the display panel is disposed toward the front of the apparatus and a state in which the photoelectric conversion panel is disposed toward the front of the apparatus based on the light reception information acquired in the light reception information acquisition step; A display device control method comprising:
39. A plurality of display panels arranged so as to constitute one screen; and a rotation axis provided to the plurality of display panels so as to be orthogonal to a straight line extending toward the front of the apparatus. A method for controlling an image display area variable display, comprising:
    A light reception information acquisition step of acquiring light reception information by a light reception sensor that receives external light applied to the front surface of the image display area variable display;
    An image display area setting step for setting an image display area for displaying an image on the image display area variable display based on the light reception information acquired in the light reception information acquisition step; and
    In the image display area set in the image display area setting step, the display panel is placed toward the front of the apparatus, and the photoelectric conversion panel is directed toward the front of the apparatus except for the image display area. A method for controlling an image display area variable display, comprising: a switching step for placing the image display area.
40. A plurality of display panels arranged so as to constitute one screen; and a rotation axis provided to the plurality of display panels so as to be orthogonal to a straight line extending toward the front of the apparatus. A method for controlling an image display area variable display, comprising:
    An image information input step in which image information to be displayed on the image display area variable display is input;
    An image display area setting step for setting an image display area for displaying an image on the one screen constituted by the plurality of display panels based on the image information input in the image information input step; and
    In the image display area set in the image display area setting step, the display panel is placed toward the front of the apparatus, and the photoelectric conversion panel is placed toward the front of the apparatus except for the image display area. A method for controlling the image display area variable display.

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