JP7492202B1 - Display device - Google Patents

Abstract

[Problem] To provide a display device capable of displaying high quality images. [Solution] A display device 10 includes a shell 12, a light-emitting element 14 that emits light inside the shell 12, a storage device 16 that stores light emission data, a light-emitting circuit 18 that causes the light-emitting element to emit light in accordance with the light-emitting data, communication devices 20a, 20b that communicate the light-emitting data, a power storage device 22 that stores power, a power supply device 24 that supplies power, a drop device 26 that drops the shell, a transport device 28 that transports the shell, and a control device 30. When the shell 12 is dropped, the light-emitting element 14 lights up and goes out to display the image. [Selected Figure] Figure 1

Description

The present invention relates to a display device capable of three-dimensional display.

Display devices capable of three-dimensional display have been developed. For example, the following non-patent document 1 discloses a display device in which light-emitting diodes are arranged in the direction of gravity, the horizontal width direction, and the horizontal depth direction. Wiring is arranged in the direction of gravity, and light-emitting diodes are attached to the wiring at equal intervals. Since the light-emitting diodes are arranged three-dimensionally, they can be made to appear three-dimensional by the way the light-emitting diodes emit light.

However, in Non-Patent Document 1, the non-emitting light-emitting diodes interfere with the display, resulting in poor image quality.

https://www.youtube.com/watch?v=B_Xp0ImdLms

The object of the present invention is to provide a display device capable of displaying high quality images.

The display device of the present invention comprises a light-transmitting shell, a light-emitting element disposed inside the shell, a light-emitting circuit disposed inside the shell for turning on or off the light-emitting element in accordance with light-emitting data, and a light-shielding means capable of blocking light from the light-emitting element.

According to the present invention, it is possible to display black by blocking the light from nearby light-emitting elements, so that conventional light-emitting diodes that do not emit light are displayed in black. It is also possible to create a sense of depth in a stereoscopic display, which improves the reproduction quality of three-dimensional objects and results in a high-quality display.

FIG. 1 is a diagram illustrating an overall configuration of a display device according to the present invention. FIG. 2 is a diagram showing a schematic internal configuration of a shell. FIG. 13 is a diagram showing the time and the position of the shell when the light-emitting body is dropped. FIG. 1 is a diagram showing a schematic configuration of a display device in which light emitters are fixedly arranged.

The display device of the present invention will be described with reference to the drawings. Several embodiments will be described, but overlapping parts may be described in one embodiment and omitted in other embodiments. In the description, the x direction in FIG. 1 etc. is the horizontal lateral direction, the y direction is the horizontal depth direction, and the -z direction is the direction of gravity.

[Embodiment 1]
The display device 10 shown in Figures 1 and 2 comprises a shell 12, a light-emitting element 14 that emits light inside the shell 12, a memory device 16 that stores light-emitting data, a light-emitting circuit 18 that causes the light-emitting element to emit light in accordance with the light-emitting data, communication devices 20a, 20b that communicate the light-emitting data, a power storage device 22 that stores power, a power supply device 24 that supplies power, a drop device 26 that drops the shell 12, a transport device 28 that transports the shell, and a control device 30.

The shell 12 has a space 32 inside. The light emitting element 14, memory device 16, light emitting circuit 18, etc. are arranged in this space 32. One light emitter 34 is formed by the shell 12 and the device provided inside it. Multiple light emitters 34 may be arranged three-dimensionally and fall, or may be launched with an initial velocity along a predictable trajectory. At that time, each light emitter 34 emits or turns off (or is light-shielded) to create a three-dimensional display. One light emitter 34 functions as one pixel of the display device 10.

The outer shape of the shell 12 is spherical. No matter which direction the shell 12 faces when it falls, the appearance of the three-dimensionally displayed image from the outside remains the same regardless of the viewing direction. The diameter of the shell 12 varies depending on the mounting method, but is approximately 10 mm or less for small, high-density, near-sighted display devices and 10 mm or more for large, high-brightness public display devices. The shell 12 is made to be light-transmitting, and when the light-emitting element 14 inside the shell 12 emits light, the light is emitted all the way to the outside of the shell 12.

The shell 12 may be filled with a translucent material or a transparent diffusion lens structure that diffuses the light of the light-emitting element components inside. In the case of a translucent material, the color is white (including milky white). When the light-emitting element 14 is not emitting light, the white color or the light from the back is visible through the shell. The shell 12 is made of a transparent resin or reinforced glass with a diffusion lens function. The shell 12 may be made of multiple layers, some of which may be the above-mentioned white color. The shell 12 is made of at least two parts, and is manufactured by storing the light-emitting element 14 and the like inside the shell 12, and then bonding the components of the shell 12 with an adhesive or the like. The outer periphery of the shell 12 after bonding may be covered with a transparent or the above-mentioned white resin to strengthen the shell 12. The light reflection and diffusion path may be arranged from the light-emitting element 14 inside the shell 12 to all directions on the surface of the sphere, or fine irregularities may be provided on the surface of the sphere to make it easier for light to scatter.

The light-emitting element 14 includes a light-emitting diode. The light-emitting diode includes a light-emitting diode that emits light with a wavelength in the visible light region and a light-emitting diode that emits light with a wavelength in the ultraviolet region. Furthermore, the light-emitting diode that emits light with a wavelength in the visible light region includes a light-emitting diode that emits light with a red wavelength, a light-emitting diode that emits light with a green wavelength, and a light-emitting diode that emits light with a blue wavelength.

Each device disposed inside the shell 12 may be mounted on a substrate 36 or the like, and the substrate 36 may be fixed to the inner wall of the shell 12. The substrate 36 may be molded or bonded to the inner wall of the shell 12 with an adhesive, or may be screwed into a screw hole provided in the inner wall of the shell 12. The shape of the substrate 36 is not limited to a square, and may be a shape that matches the shape of the inner wall of the shell 12. The substrate 36 may be made of a light-transmitting material.

The number of light-emitting elements 14 that emit light of each wavelength is not limited to one, and multiple light-emitting elements 14 that emit light of one wavelength color may be mounted on one substrate 36. The number of light-emitting elements 14 may be changed as appropriate depending on the amount of light. Light-emitting elements 14 may be mounted on both sides of the substrate 36, not just one side.

The storage device 16 may be a semiconductor memory capable of reading and writing data. Light emission data for turning on or off the light-emitting element 14 is stored in the storage device 16. The stored light emission data is used by the light-emitting circuit 18.

The light emission data stored in the memory device 16 inside one shell 12 is the light emission data of the light emitting element 14 provided inside that shell 12. The light emission data of the light emitting element 14 of the other shells 12 is not stored. Only the light emission data for making the light emitting element 14 emit light while the shell 12 is falling is stored in the memory device 16.

The amount of data per unit time increases with time from when the light emitter 34 starts to fall to when it finishes falling. When the light emitter 34 falls freely in the direction of gravity, the light emitter 34 falls while accelerating due to the gravity of the earth. As shown in FIG. 3, the distance traveled by the light emitter 34 increases with each time t. If it is attempted to display uniformly in the direction of gravity, the amount of data per unit time must be increased as time passes after the fall, and light must be emitted according to that data, otherwise the display resolution will not be uniform across the entire display area. The refresh rate of a typical flat display is constant, and the amount of data consumed by raster scanning per unit time is the same. The present invention increases the amount of data per unit time (increases the amount of data consumed by raster scanning) according to the time that has passed since the light emitter 34 started to fall (i.e., the speed of movement of the three-dimensional display pixels). For example, the positions shown for the light emitters 34 in FIG. 3 are evenly arranged in the direction of gravity, and if one piece of data is used to turn on or off the light emitting element 14 at the indicated position, the amount of data per unit time increases with time (the amount of data consumed by raster scanning increases). Taking into account the falling speed of the light emitter 34 due to the influence of gravity, an internal clock oscillator is placed in the shell 12 so that light is emitted uniformly throughout the display device, and the amount of data per unit time is determined according to the oscillation of the oscillator. For example, since the distance traveled by the light emitter 34 is proportional to the square of the time, the amount of data is set to increase in proportion to the square of the time.

In addition to gravitational acceleration, air resistance may be included as a factor in determining the amount of data per unit time. Furthermore, the speed of the light-emitting body 34 becomes constant after the resistance force that the light-emitting body 34 receives from the air and gravity (the product of the mass of the light-emitting body 34 and the gravitational acceleration) are balanced. As the light-emitting body 34 approaches this constant speed, the increase in the amount of data per unit time may be reduced.

Normal display devices write data to one pixel for each display frame, but in the present invention, the light emission data stored in the memory device 16 is data from when the light emitter 34 starts to fall to when it finishes falling. Data for multiple display frames is stored in the memory device 16.

In FIG. 1, the light emitters 34 are evenly spaced in the direction of gravity, but because they emit light evenly when displayed, for the sake of convenience, the light emitters 34 are evenly spaced.

The image displayed by the light emitting elements 14 emitting light may be either a still image or a video. The image displayed on the display device 10 is a three-dimensional image, and a three-dimensional still image or video is displayed by turning on or off each light emitting element 14.

The light emitting circuit 18 is an electronic circuit composed of ICs and the like. The light emitting element 14 is caused to emit light using the light emitting data stored in the memory device 16. The electronic circuit constituting the light emitting circuit 18 may include other circuits. For example, it may control the reading and writing of the light emitting data to the memory device 16. As described above, the falling speed of the light emitting body 34 increases according to the gravitational acceleration after falling, and therefore the amount of light emitting data increases according to the falling speed, and light emission is controlled according to the amount of data. For example, a clock oscillator is placed inside the shell 12, and its oscillation period is referenced for control.

The communication devices 20a and 20b are devices for communicating between the outside and inside of the shell 12. The communication devices 20a and 20b are equipped with antennas and electronic circuits on the inside and outside of the shell 12. For example, the antenna of the communication device 20a inside the shell 12 is composed of a small antenna such as a coil antenna or a patch antenna. The antenna of the communication device 20b outside the shell 12 is not particularly limited as long as it can transmit data wirelessly. The wireless system that can be used is Wi-Fi or Bluetooth (registered trademark), etc.

In the present invention, the cylinders 38 are arranged in the horizontal lateral direction and horizontal depth direction, and the light emitters 34 are placed inside the cylinders 38 to determine the drop position of each light emitter 34, which in turn determines the color, amount, and timing of the emitted light. Therefore, the present invention is configured to enable communication for each light emitter 34 placed inside the cylinders 38. In FIG. 1, the communication device 20b outside the shell 12 is shown as a single box, but in reality, an antenna may be provided for each cylinder 38. Alternatively, a drop position setting and an individual identification number may be added to each shell 12, and a portion of the entire frame information communication may be captured and stored as the light emission information of that shell 12.

The power storage device 22 can be a capacitor or a secondary battery. The power storage device 22 is disposed inside the shell 12 and is used to provide power for the light emitting element 14 and to drive the light emitting circuit 18.

The power supply device 24 is a device for supplying power from the outside to the inside of the shell 12. For example, to perform contactless charging, a power receiving coil may be arranged inside the shell 12 and a power transmitting coil may be arranged on the outside, and a power receiving control circuit may be further provided inside the shell 12. The coil inside the shell 12 may also be used as an antenna for the communication device 20a. The power supplied to the inside of the shell 12 is temporarily stored in the power storage device 18 via the power receiving control circuit.

The drop device 26 is a device for dropping the light-emitting body 34 downward. A plurality of light-emitting bodies 34 arranged at regular intervals in the horizontal lateral direction and the horizontal depth direction drop all at once. The timing is adjusted so that the drop occurs at regular intervals. For example, as described above, the cylinders 38 are arranged in the horizontal lateral direction and the horizontal depth direction, and the drop device 26 is placed at or near the lower ends of the cylinders 38. For example, a shutter that opens and closes the lower ends of the cylinders 38 or near them can be used as the drop device 26. The configuration of the shutter is not limited as long as the cylinders 38 can be opened and closed. The shell 12 falls when the shutter is driven. The drop device 26 allows the shell 12 to fall at regular intervals. In order to adjust the timing of the drop of the light-emitting body 34, a timing signal may be communicated from the control device 30 to the drop device 26, or an oscillator may be placed in the drop device 26 and the timing of the drop may be adjusted according to the oscillator signal.

The transport device 28 is a conveyor or lift that transports the light-emitting body 34 after it has fallen. The transport device 28 circulates the light-emitting body 34. Continuous display can be performed while the shells are circulated. The power supply device 24 and communication device 20b are placed midway along the transport device 28, and the drop device 26 is placed at the end. Power is supplied to the light-emitting body 34 during its transport, and communication takes place afterwards. This is because the light-emitting circuit 18 and other components cannot be driven unless power is stored in the power storage device 22.

A cushion or the like may be placed at the point where the light-emitting body 34 falls to prevent the light-emitting body 34 from being damaged.

The control device 30 is a computer for controlling the operation of the above-mentioned devices. For example, it controls the communication device 20b to perform communication, or controls the drop device 26 to drop the light emitter 34. Furthermore, the light emission data may be generated by the control device 30 and stored in the storage device of the control device 30.

It is equipped with a light-blocking means (not shown) that reacts to ultraviolet light and changes color depending on the amount of ultraviolet light. For example, the shell 12 contains silver halide as a light-blocking means. The color changes depending on the amount of ultraviolet light. When the light-emitting element 14 emits ultraviolet light, the shell 12 changes its black density depending on the amount of ultraviolet light. The shell 12 is used to express the color black.

The display device 10 may also include an audio device (not shown). Sound, music, etc. are emitted from the audio device in accordance with the display.

Next, a display method using the display device 10 of the present invention will be described. (1) The light-emitting body 34 is transported by the transport device 28. During the transport, power is supplied to the inside of the shell 12 by the power supply device 24 in a non-contact manner, and the power is stored in the power storage device 22.

(2) The light emitters 34 are placed inside the cylinder 38. The position of each light emitter 34 is determined, and light emission data is sent to each light emitter 34 by the communication devices 20a and 20b, and stored in the storage device 16.

(3) A number of light-emitting bodies 34 arranged in the horizontal lateral direction and the horizontal depth direction are dropped by the drop device 26. During the drop, the light-emitting elements 14 are turned on or off by the light-emitting circuit 18.

The light-emitting bodies 34 fall at regular time intervals. The light-emitting bodies 34 fall one after the other. The multiple light-emitting bodies 34 fall while being arranged in the horizontal lateral and horizontal depth directions. As the speed of the light-emitting bodies 34 increases with the passage of time after falling, the spacing between the light-emitting bodies 34 increases the further down in the direction of gravity, but the number of times the light emission of the light-emitting elements 14 changes per unit time increases. While the light-emitting bodies 34 are falling, the light-emitting elements 14 are turned on or off.

When the light-emitting element 14 emits light, the color is determined by the wavelength of the light emitted during the emission. If light with a wavelength in the visible light region is emitted, the color will correspond to that wavelength. If light with a wavelength in the ultraviolet region is emitted, the amount of rear visible light blocked will change depending on the amount of ultraviolet light. For example, the light control device will turn black due to ultraviolet light, and the density of the black color will change depending on the amount of ultraviolet light. Increasing the amount of ultraviolet light will result in a dark black, and decreasing it will result in a light black, making it possible to express different shades of black. If the light-emitting element 14 does not emit any light at all, the color of the shell 12 (for example, white) will be visible. These colors are used to control the display.

As shown above, by using ultraviolet light to produce black, it is possible to block light from inside the object and add depth to the three-dimensional display.

(4) After the light emitter 34 has fallen, it is transported by the transport device 28 back to the falling device 26. One light emitter 34 circulates many times, and the light emitting element 14 emits light while it falls. There is no limit to the number of times the light emitter 34 circulates, and the display time of the image can be adjusted by the number of times it circulates.

As described above, the present invention places light-emitting elements 14 inside the shell 12, and allows for three-dimensional display by dropping the light-emitting elements 34. Black can be displayed by blocking light, and the reproducibility of three-dimensional objects is higher than with conventional three-dimensional displays, resulting in better image quality. There is no need to physically or electrically connect the light-emitting elements 14 arranged in the direction of gravity, as in the past. There is no need for wiring that would be an obstacle in the depth direction of the viewpoint, allowing for a neater display.

[Embodiment 2]
When the light-emitting bodies 34 are carried to the dropping device 26, the communication devices 20a, 20b may transmit position information for each light-emitting body 34. The position information may be stored in the memory device 16 in the shell 12, and the position information may be communicated by the communication devices 20a, 20b, and the control device 30 may communicate light emission data that matches the position information. As long as the light emission data is stored in the memory device 16 of each shell 12, the method of assigning the light emission data is not limited.

[Embodiment 3]
The timing of light emission may be synchronized. For example, the communication devices 20a and 20b may be used to transmit a signal for synchronization at a predetermined timing, and the light emission circuit 18 may control the timing of light emission based on the signal. For example, a synchronization signal may be transmitted according to the timing at which the drop device 26 is driven, and the light emitting element 14 is caused to emit light based on the synchronization signal. The light emitting element 14 may be caused to emit light immediately after receiving the synchronization signal, or may be caused to emit light after a predetermined time has elapsed.

[Embodiment 4]
Although each light-emitting body 34 is carried to the dropping device 26 by the transport device 28 after dropping, if there are a large number of light-emitting bodies 34 and an image can be sufficiently displayed by dropping each light-emitting body 34 once, the transport device 28 may be omitted. Each light-emitting body 34 is dropped once, during which the light-emitting element 14 emits light to display an image.

[Embodiment 5]
The arrangement of the light emitting bodies 34 is not limited as long as they are arranged in the horizontal lateral direction and the horizontal depth direction. For example, they may be arranged in a lattice pattern, a staggered pattern, a radial pattern, a concentric circle pattern, or the like in the horizontal lateral direction and the horizontal depth direction. Furthermore, instead of being arranged in a square pattern in the horizontal lateral direction and the horizontal depth direction, they may be arranged in other shapes, such as a circle pattern.

[Embodiment 6]
The dropping device 26 is not limited to a shutter. Any other device may be used as long as it can drop the light-emitting body 34 at a predetermined timing. For example, it may be a device that sucks the shell 12. The light-emitting body 34 drops when the suction is stopped at a predetermined timing.

[Embodiment 7]
The light-emitting bodies 34 arranged in the horizontal lateral direction and the horizontal depth direction by the dropping device 26 are not limited to being dropped all at once. As long as the light-emitting elements 14 inside the shell 12 emit light after being dropped and the display device 10 can perform a predetermined display, the timing of the drop of the light-emitting bodies 34 may be simultaneous or different.

A portion of the light emitters 34 among the plurality of light emitters 34 may be partially dropped. An image is displayed by the partially dropped light emitters 34.

[Embodiment 8]
The dropping device 26 is not limited to dropping the light-emitting body 34 freely. The light-emitting body 34 may be shot at a predetermined initial speed. In the first embodiment, the light-emitting body 34 is dropped freely, but the speed and moving distance of the light-emitting body 34 are calculated taking the initial speed into consideration, and the amount of light emission data, etc. are appropriately changed.

The light-emitting body 34 may not only be dropped in the direction of gravity, but may also be dropped diagonally or horizontally relative to the direction of gravity. If the direction in which the light-emitting body 34 falls is known, its trajectory can also be known, and the light emission data can be determined. The light-emitting body 34 may also be emitted in a diagonal direction opposite to the direction of gravity. If the trajectory of the light-emitting body 34 is known, the light emission data can be determined.

[Embodiment 9]
The light emitting element 14, the memory device 16, the light emitting circuit 18, and other electronic circuits provided in the shell 12 may be integrated into a single component. For example, the light emitting element 14 and the light emitting circuit 18 may be formed on different semiconductor substrates, the terminals of the light emitting element 14 and the terminals of the light emitting circuit 18 may be joined with a low resistance metal, and the other parts may be joined with an adhesive. By integrating them into a single component, the size of the shell 12 can be reduced, and the resolution of the display device 10 can be increased.

A communication circuit or the like may be formed in the remaining portion of the semiconductor substrate on which the light emitting circuit 18 is formed. Multiple elements contained in the shell 12 can be integrated into a single component.

[Embodiment 10]
The power supply device 24 is not limited to non-contact power transmission using electromagnetic waves. For example, a solar cell may be disposed inside the shell 12, and a lighting device may be disposed outside the shell 12 to irradiate the solar cell with light. The solar cell generates power, and the generated power is stored in the power storage device 22. A circuit for converting the power of the solar cell into a predetermined power may be disposed inside the shell 12.

[Embodiment 11]
The light emitting element 14 is not limited to a light emitting diode. For example, it may be a self-emitting element such as an organic EL. Furthermore, it may be a device in which an array substrate such as a liquid crystal display and a color filter substrate are opposed to each other, liquid crystal is placed between them, and the amount of transmitted light is adjusted by controlling the tilt of the liquid crystal with the electrodes of the array substrate. A white light emitting diode, a light guide plate, etc. are placed behind the array substrate so that the light is guided to the array substrate. The transmitted light is converted to a predetermined color by the color filter substrate. Depending on the tilt of the liquid crystal, the light can be blocked to make it non-emitting. The non-emitting state is the same as the state in which the ultraviolet light emitting diode is emitting light, and the liquid crystal etc. also functions as a light blocking means.

The device using the liquid crystal is not limited to one. For example, two devices may be used, with the planes of the substrates perpendicular to each other. Furthermore, three devices using the liquid crystal may be used, with the planes of the substrates perpendicular to each other. Light can be emitted in three directions. By using multiple devices using liquid crystal, the difference in light depending on the angle at which the light emitter 34 is viewed and the light shielding error due to the directionality caused by the rotational movement of the light emitter can be reduced.

Furthermore, the light-emitting element 14 may be composed of two substrates having electrodes and a microcapsule placed between the substrates. Positively or negatively charged pigment particles and oil are placed inside the microcapsule. The position of the pigment particles changes depending on the voltage applied to the electrodes. The color changes depending on the position of the pigment particles, and the color of the light-emitting body 34 can be changed.

[Embodiment 12]
Although the light emitting diode that emits light with a wavelength in the ultraviolet region is provided in the light emitting element 14, the light emitting diode that emits light with a wavelength in the ultraviolet region may be omitted. Furthermore, the light blocking means may also be omitted. Image data is displayed simply by utilizing the three primary colors of light.

Also, if the illuminated image is expressed in a single color, the light-emitting element 14 may be of one type and emit light of only a single color.

[Embodiment 13]
When the shell 12 is made transparent, the light emitting element 34 does not emit light, and when the light is not blocked, the shell 12 is transparent and does not block information behind it.

[Embodiment 14]
In order to prevent the light emitting body 34 from being affected by wind while it is falling, a light-transmitting plate may be disposed around the falling area of the light emitting body 34. The plate may be made of resin or glass.

[Embodiment 15]
The light emitters 34 are not limited to being dropped. The light emitters 34 may be arranged at fixed positions, as in the lighting device 40 of Fig. 4. Although the light emitters 34 are arranged in two directions in Fig. 4, the light emitters 34 may actually be arranged in the horizontal depth direction as well. The light emitters 34 may be arranged in three directions, and the light emitters 34 arranged in the direction of gravity may be connected to the control device 30 and the power supply device 42. The power supply device 42 is a circuit that converts the power of the power source into a predetermined voltage. The light emitters 34 arranged in the direction of gravity may be interconnected by a linear or rod-shaped body such as a piano wire. The dropping device 26 and the transport device 28 may be omitted.

Light emission data is transmitted from the control device 30 to each light-emitting body 34, and the light-emitting circuit 18 causes the light-emitting element 14 to emit light in accordance with the light emission data. The control device 30 and each light-emitting body 34 may be connected by a communication device. The light emission data may be stored in the memory device 16 as necessary. The light emission data is not limited to wireless transmission as in the above embodiment, and may be wired communication. Power is supplied to each light-emitting body 34 from a power supply device 42. The supply of power is not limited to contactless transmission, and may be transmission via a conductor wire.

As in the above embodiment, light-shielding means may be provided on the shell 12, the light-emitting element 14, etc. As described above, the light-shielding means allows the light-emitting element 34 to express black. This allows black to be expressed in a 3D display, making it easier to see the image in 3D, and enabling higher image quality.

The linear body connecting the light-emitting bodies 34 aligned in the direction of gravity may be moved up and down in the direction of gravity. By moving the light-emitting bodies 34 up and down, it is also possible to eliminate overlapping of multiple light-emitting bodies 34 in the horizontal depth direction.

The light emitters 34 are arranged in a square shape, but may be arranged in any shape, such as a cylinder or a sphere. Arrange the light emitters 34 according to the shape you want to display.

In addition, the present invention can be implemented in various forms with various improvements, modifications, and changes based on the knowledge of those skilled in the art without departing from the spirit of the invention.

10, 40: Display device 12: Shell 14: Light emitting element 16: Memory device 18: Light emitting circuit 20a, 20b: Communication device 22: Power storage device 24: Power supply device 26: Drop device 28: Transport device 30: Control device 32: Internal space of shell 34: Light emitting body 36: Substrate 38: Cylinder 42: Power supply device

Claims (5)

A light-transmitting shell;
a light emitting element disposed inside the shell and including a light emitting diode that emits light with a wavelength in the visible light region and a light emitting diode that emits light with a wavelength in the ultraviolet light region ;
a light emitting circuit disposed inside the shell and configured to turn on or off a light emitting element in accordance with light emission data;
a light shielding means including silver halide contained in the shell ;
A storage device disposed inside the shell and configured to store light emission data of the light emitting element;
A communication device for communicating at least light emission data between the outside and the inside of the shell;
a power storage device disposed inside the shell and configured to store power for causing the light emitting element to emit light;
A power supply device for supplying power from the outside to the inside of the shell;
A dropping device that drops the light-emitting body including the shell downward;
A control device for controlling the communication of the light emission data and the dropping of the shell;
A display device comprising: 2. The display device according to claim 1 , wherein the amount of light emission data stored in the storage device inside the shell per unit time increases according to the amount of time that has elapsed since the shell was dropped. 3. The display device according to claim 2 , wherein the light emission data stored in said storage device is data for a plurality of display frames from when the light emitter starts to fall to when it finishes falling. The display device of claim 1, wherein the color of the shell includes white or transparent, which allows light to pass through. 2. The display device according to claim 1 , further comprising a transport device for transporting the light emitters that have finished dropping to the dropping device .

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