JP4716854B2 - Display case - Google Patents

Description

  The present invention relates to a display case that can accommodate display items while being lit up, and more particularly to a display case that can be suitably used for display of plants.

This type of conventional display case, which is integrated with a light source for illumination, surrounds the space around the display space with a transparent wall such as transparent glass so that the display on the display stand can be viewed from the outside. . And as shown in patent document 1, it is common that the light source for illumination is arrange | positioned on the ceiling of an exhibition case, and illuminates an exhibit from the top (patent document 1). In addition, if the light source for illumination is arranged above the exhibition space in this way, the power cable needs to be pulled out, or the upper part of the display case becomes thick with the light source for illumination. There has also been proposed an example (Patent Document 2) in which a display is arranged below a display stand, a mirror is provided on the ceiling of the display case, and the display is illuminated by reflection from the mirror.
JP-A-63-122409 Japanese Patent Laid-Open No. 11-285431

  However, in the above-described conventional apparatus, the upper part of the display case is closed by the illumination light source and the mirror, and the display can be viewed from the surrounding side 360 °, but the display cannot be viewed from above. Especially in the case of things such as plants that are usually viewed from above at a low position, such a conventional display case also impairs the value of viewing.

  However, if the light source for illumination is arranged on the side in order to improve the visibility from above, the light source for illumination interferes with viewing the display from the side, which is not preferable. In addition, lighting up from below is unnatural.

  Therefore, the present invention is capable of observing the exhibit from the surrounding side 360 ° and the whole sky above, while having the light irradiation unit integrally, and illuminating the exhibit with light from all directions. The main intended task is to provide a display case with a light irradiating part that can be used to solve conventional problems at once.

  That is, the display case according to the present invention is provided so as to cover the upper side from the peripheral part of the base for installing the exhibit and the base, and forms an exhibit accommodation space with the base. A transparent wall, a light irradiation unit provided on the base and irradiating light from the inside toward the transparent wall, and provided on the inside, the outer surface, or the inner surface of the transparent wall, and displaying the light from the light irradiation unit It is characterized by comprising a number of fine reflecting parts arranged in the product accommodating space with a gap between each other.

  In this case, the reflection part may be formed in a net shape that reflects the light from the light irradiation part into the exhibit accommodation space.

  If it is such, since the light emitted from the light irradiating part can be reflected one or more times by the reflecting part provided on the transparent wall to reach the exhibit from various directions, It is possible to light up from the surroundings. Moreover, since the reflecting portions are fine and arranged with a gap between them, or are formed in a fine mesh of nets, it is the same as viewing the exhibit through a very thin wire mesh. The reflective part does not hinder the visibility from the outside of the exhibit. In other words, it is possible to appreciate the exhibits that are beautifully lit up from all directions from around 360 ° and all the sky above.

  In addition, since only the transparent wall is placed above the base, the appearance is simple and the image of the exhibit is not impaired. Furthermore, even though the exhibits are illuminated with light from the surroundings, the light source cannot be seen at first glance, so that the viewer can be given a mysterious and fantastic feeling. Here, “reflection” includes irregular reflection (scattering).

  The reflective layer and the light blocking / absorbing layer may be formed separately by printing or the like, but considering the positional shift at that time, the light blocking / absorbing layer has a slightly larger area than the reflecting layer. It is desirable that

  Further, the reflective layer and the light blocking / absorbing layer do not need to be in close contact with each other, and may be provided separately in the thickness direction. For example, the reflective layer is provided on the inner surface of the transparent wall, and the light blocking / absorbing layer is provided on the outer surface of the transparent wall at a position corresponding to the reflective layer.

  If the surface opposite to the display housing space (outer surface) in the reflection part is such that the reflection part glitters when reflecting light, or the reflection part diffuses and diffuses light from the inside, the reflection part May appear whitish and interfere with viewing. In order to prevent this appropriately, and to obtain the same effect that a bright room can be seen cleanly through a screen door at night, for example, the reflecting portion is exposed to the exhibit accommodation space side. It is preferable to include a reflective layer having one surface as a reflective surface and a light blocking / absorbing layer that blocks or / and absorbs light formed on the other surface of the reflective layer.

  In order to enhance the diffusing action when light is reflected by the reflecting section, it is preferable to further include a transparent film that covers the reflecting section and increases the diffusing action of light. If this is the case, the light is refracted when incident on the transparent film, and the light is reflected and reflected at an angle closer to the perpendicular to the surface of the reflecting portion than the light without the transparent film. In this case, the diffusion action increases. This transparent film also serves to protect the reflective portion.

  As a specific installation mode of the light irradiation unit, there can be mentioned one in which the light irradiation unit is installed around the inside of the transparent wall in the base.

  In addition, the display case according to the present invention is provided so as to cover the upper side from the peripheral part of the base for installing the exhibit and the base, and forms an exhibit accommodation space with the base. A transparent wall, a light irradiating portion that is disposed at a base end portion of the transparent wall, or that faces the base end portion of the transparent wall, and irradiates light inside the transparent wall; and an outer surface of the transparent wall. There may be a configuration provided with a large number of fine reflecting portions which are provided and arranged with a gap between each other so as to reflect the light traveling in the inside thereof into the exhibit accommodation space.

  In this case, the reflection part may have the same configuration as described above.

  Furthermore, the display case according to the present invention is provided so as to cover the upper side from the peripheral part of the base for installing the exhibit and the base, and forms an exhibit accommodation space with the base. Provided in the transparent wall, a light irradiating portion that is disposed at the base end portion of the transparent wall, or facing the base end portion of the transparent wall, and irradiates light inside the transparent wall. It is also possible to have a configuration provided with a reflection part that reflects the light traveling through the interior into the exhibit accommodation space.

  The reflective part in this case may be a thin strip-shaped reflector that circulates horizontally, for example, provided in the thickness direction inside the transparent wall, but the reflective part can be made very thin in this way, The same effects as described above can be achieved without impairing the visibility of the exhibits.

  Furthermore, the display case according to the present invention includes a base for installing exhibits, a transparent wall provided so as to cover the upper part from the periphery of the base, and an optical fiber disposed in or on the transparent wall. And a light irradiating part arranged to face the end face of the optical fiber and for introducing light into the optical fiber, and provided with a notch for facing the exhibit on the side surface of the optical fiber. It may be configured such that light leaking from the section is irradiated on the exhibit.

  Since the optical fiber is thin and transparent, even with such a configuration, the same operational effects as described above can be obtained without impairing the visibility of the exhibits.

  This display case can also be used as a plant growing device with the following configuration. That is, the temperature control mechanism for adjusting the temperature in the exhibit accommodation space surrounded by the base and the transparent wall is further provided, and the plant mounting table for making the plant an exhibit is provided on the base.

  In this way, plants can be grown indoors regardless of the season etc. by light irradiation and temperature management. For example, this exhibition case containing plants is placed in a restaurant or hotel lobby. New applications such as creating completely new interiors will greatly expand.

  In order to enhance the heat insulating property in the exhibit accommodation space, it is preferable that the transparent wall has a double structure including an outer wall and an inner wall, and a heat insulating layer is provided in the space between the outer wall and the inner wall. In this way, the temperature in the exhibit storage space is not easily affected by the temperature of the air outside the display case. Therefore, the temperature can be easily adjusted, and condensation is unlikely to occur. Therefore, it is possible to prevent problems such as the inside being difficult to see.

  In order to increase the variation of the light-up or to grow the plant optimally, it is preferable to further include a light control circuit that controls at least one of the light amount or the color of the light emitted from the light irradiation unit. .

  In addition, if the light is shaken, it will be possible to impress the viewer with a unique landscape that makes the image of sunbeams appear. Various methods can be considered for the method of shaking the light, but it is preferable to produce a natural image while being random rather than repeating a certain pattern. For this purpose, the light control circuit is a fluctuation signal that is an electrical signal that is present in the natural world and can be perceived by humans with five senses, such as the sound of waves and winds, the chirping of birds, sunbeams, and glittering waves. And a pattern control circuit for controlling the light emission pattern so that at least one of the light amount or the color of the light emitted from the LED changes in accordance with the fluctuation indicated by the fluctuation signal. Things can be mentioned.

  Moreover, you may change light not only in what occurs naturally in nature but also in music and time. More specifically, the light control circuit receives a sound signal indicating a sound such as music or sutra, and the LED according to at least one of the volume, tone, and pitch of the sound indicated by the sound signal. And a pattern control circuit that controls a light emission pattern of light emitted from the light source.

  And if it is such a thing, it will also become possible to obtain the relaxation effect to a viewer and promotion of plant growth.

  Specific embodiments that are preferred in appearance include those in which the transparent wall has a substantially hemispherical shape. Furthermore, if it is such, when the light irradiation part is arrange | positioned inside a transparent wall as mentioned above, the light which reaches | attains a reflection part is 1 thru | or inside a transparent wall not only the direct light from LED. This includes light that has been totally reflected a plurality of times, increasing the chances of reflection at the reflecting portion and enabling more efficient illumination.

  In view of the convenience of carrying out the removal of the transparent wall and carrying around, it is desirable that the transparent wall is provided with a detachable handle.

  In particular, when used for plant growth, the amount of heat released from the light irradiation unit needs to be as low as possible because temperature management becomes complicated. In addition, in consideration of lifetime, color variation, efficiency, etc., it is preferable to use an LED for the light irradiation part. Further, by using an LED having relatively narrow directivity, it is difficult for the viewer to see the direct light of the LED, and the effect of illumination can be further increased.

  In addition, the display case according to the present invention is provided so as to cover the upper side from the peripheral part of the base for installing the exhibit and the base, and forms an exhibit accommodation space with the base. A transparent wall, and a fine EL element supported on the inside, outer surface, or inner surface of the transparent wall, and the fine EL element includes a transparent electrode layer disposed on the exhibit accommodation space side, and an anti-exhibition article accommodation space. A non-transparent electrode layer disposed on the side and a light emitting layer disposed between the electrodes and emitting light by applying a voltage may be provided, and a large number of the light emitting layers may be arranged with a gap between them.

If this is the case, it is possible to make the arrangement density of the EL elements uniform, and each EL element emits light spontaneously. Can do. Furthermore, since the light irradiation part and the reflection part are integrated, the light enters from the periphery of the transparent wall, as in the case described above, where the light irradiation part is the base and the reflection part is provided on the transparent wall. On top of that, when the reflection parts are arranged at equal density, the light reflected by the reflection parts arranged at the periphery of the transparent wall becomes stronger, while the reflected light at the center part of the transparent wall becomes weaker. Does not happen. In addition, if the arrangement density of the EL elements is uniform, the visibility of the exhibit is not hindered as if the exhibit is viewed through a very fine wire mesh as described above.

Here, EL is an abbreviation for Electro Luminescence. The light emitting layer may be a layered structure of a PN semiconductor, or may be composed of an organic polymer or a low molecule as in the case of an organic EL element described later.

  As an EL element that can be miniaturized and can contribute to suppression of moire, an organic EL element can be given.

  In order to efficiently irradiate the display with light from the light-emitting layer and to suppress light reflection on the surface of the EL element on the counter-exhibit accommodation space side, the surface of the non-transparent electrode layer on the light-emitting layer side reflects light. It is desirable that the surface is a light shielding surface on the opposite side to shield or absorb light.

  Furthermore, the display case according to the present invention is provided so as to cover the upper side from the peripheral part of the base for installing the exhibit and the base, and forms an exhibit accommodation space with the base. A transparent wall, and a fine EL element supported on the inside, outer surface, or inner surface of the transparent wall, and the fine EL element includes a transparent electrode layer disposed on the exhibit accommodation space side, and an anti-exhibition article accommodation space. A non-transparent electrode layer disposed on the side, and a light emitting layer disposed between the electrodes and emitting light by applying a voltage. The electrode layers of adjacent EL elements are connected to each other, and the EL element as a whole The electrode layer may be configured to have a net shape. If it is such, the electric power supply to each EL element can be performed without difficulty.

  As described above, according to the present invention, it is possible to view the exhibit from the surrounding side 360 ° and the whole sky above, while the light irradiation unit is integrally provided, and the display is irradiated with light from all directions. And can be lit up. In addition, the appearance of the display case itself can be improved as compared to the conventional case, and a completely new interior can be created by using it for plant cultivation.

  <First Embodiment>

  A first embodiment of the present invention will be described below with reference to the drawings.

  The display case which concerns on this embodiment is provided so that the upper part may be covered from the base 3 for installing the plant 1 which is an exhibit, and the peripheral part of the base 3, as shown in FIGS. The transparent wall 4 that forms the exhibit accommodation space 2 with the base 3, the light irradiation unit 5 that is provided in the base 3 and emits light from the inside toward the transparent wall 4, A large number of fine reflectors 6 (see FIG. 7) provided on the inner surface 4a of the transparent wall 4 and arranged with gaps between each other to reflect the light from the light irradiation unit 5 into the exhibit accommodation space 2. It has. In addition, the upper and lower sides described below are convenient directions as seen from the drawings, and do not define the absolute installation direction of the light irradiation unit 5.

  Each part will be described in detail.

  The base 3 has a disk shape, and is an upwardly opening wall portion 31 formed of a bottom wall 31a, a side peripheral wall 31b, and a bowl-shaped support wall 31c integrally protruding from the upper ends of the side peripheral walls 31b. And a plant mounting table 32 attached so as to be fitted into the opening portion of the wall portion 31, and an apparatus housing chamber 33 is formed inside the wall portion 31 and the plant mounting table 32.

  Each wall 31a, 31b, 31c forming the wall portion 31 has a two-layer structure, and is composed of a surface layer 311 made of a metal such as aluminum and having a high thermal conductivity and a back layer 312 formed of a heat insulating member. In particular, a plurality of grooves extending in the circumferential direction are provided on the outer surface of the surface layer 311 of the side peripheral wall 31b to form the radiation fins 313.

  The plant mounting table 32 is a thin disk-like one that opens upward, and is configured so that the plant 1 can be planted there by putting soil or sponge inside.

  The device accommodation chamber 33 accommodates the temperature adjustment mechanism 9, the humidity adjustment mechanism 10, the water supply mechanism 15, the fan 14, and the control mechanism 16 that controls them.

  The temperature adjustment mechanism 9 includes a Peltier portion 91 having a Peltier element, and a heat conduction fin 92 attached to the Peltier element. The temperature adjustment mechanism 9 controls the amount of current applied to the Peltier element and its direction, and the heat conduction fin 92 The internal temperature can be adjusted by radiating or absorbing heat. In this embodiment, the heat conducting fins 92 are positioned in the device housing chamber 33, and the Peltier portion 91 is provided with the through holes 34 in the device housing chamber 33 and the heat insulating material 312, and the wall portion 31 (more specifically, the bottom). It is in contact with the wall 31a).

  The humidity adjusting mechanism 10 includes a humidifier 101 and a dehumidifier 102. The humidifier 101 emits water vapor using ultrasonic vibration or boiling. The dehumidifier 102 uses a Peltier element, and includes a Peltier part 102a having a two-stage Peltier element, a dew condensation part 102b attached to the Peltier part 102a, and a drain 102c. Then, the amount of current supplied to the Peltier element and its direction are controlled, and the dew condensation part 102b is cooled to cause dew condensation and dehumidification. The condensed water is discharged to the outside through the drain 102c. In this embodiment, the dew condensation part 102b is located in the base 3, and the Peltier part 102a is provided with the through-hole 35 in the equipment accommodating chamber 33 and the heat insulating material 312 and the wall part 31 (more specifically, the bottom wall 31a). ).

  The water supply mechanism 15 includes a tank 15a, a pump 15b, and a nozzle 15c. The water supply mechanism 15 is configured to supply water from the tank 15a with the pump 15b and to blow it out from the nozzle 15c. The tank 15a has a handle 15d exposed to the outside, and the tank 15a can be removed by the handle 15d so that water can be replenished. The pump 15 b is turned on / off by a drive signal from the control unit 16. The nozzle 15 c is configured to penetrate the bottom plate 32 a of the plant mounting table 32 and protrude above the plant mounting table 32, and disperse the water pumped out from the pump 15 b onto the plant mounting table 32. Is.

  In order to circulate the air between the exhibit storage space 2 and the device storage space 33, the fan 14 sends out air from the air connection hole A <b> 1 provided between the device storage space 33 and the exhibit storage space 2. Is. Thereby, the plant 1 currently displayed can be shaken with a wind.

  As schematically shown in FIGS. 3 and 4, the control mechanism 16 is a computer including a CPU 16A, a memory 16B, an input / output interface circuit 16C, an amplifier circuit 16D, a display 16E, an input unit 16F, and the like. Functions of the temperature control circuit 161, the humidity control circuit 162, the water supply control circuit 163, the light control circuit 164, the fan control circuit 165, and the like are exhibited by the cooperation of the respective units based on a predetermined program stored in 16B. . Each of these control circuits 161, 162, 163, 164, 165 can be rephrased as having a programmable logic circuit and an input / output interface and an amplifier circuit corresponding thereto, and various sensors (not shown) provided separately. A predetermined drive control signal is output on the basis of a detection signal and the like, and the temperature adjusting mechanism 9, the humidity adjusting mechanism 10, the water supply mechanism 15, the fan 14, the light irradiation unit 5 described later, and the like are controlled.

  Further, as shown in FIG. 5, the control mechanism 16 has a panel surface 16G having an operation unit 16G1, a display unit 16G2, a connection connector 16G3 such as a USB, and the like. The temperature, wind direction, and air volume in the exhibit accommodation space 2 can be adjusted by the operation unit 16G1 on the panel surface 16G. In addition, data can be taken in from another information processing apparatus using a connection connector 16G3 such as a USB.

  The transparent wall 4 has a hemispherical shape made of, for example, acrylic and opens downward as shown in FIGS. 1 and 2. The transparent wall 4 is a double wall composed of an outer wall 41 and an inner wall 42 provided inside the outer wall 41. Make a structure. The space 4d composed of the outer wall 41 and the inner wall 42 is filled with air. Of course, it is filled with a gas having a low thermal conductivity or a layer of a soft resin such as silicon having a low thermal conductivity. Also good. The lower end 4 b of the transparent wall 4 is fitted and supported in a bottomed transparent wall support groove M 1 provided on the upper surface of the support wall 31 c of the base 3, and is sealed by the transparent wall 4 and the base 3. An exhibit accommodation space 2 is formed. In the present embodiment, the handle 13 can be detachably attached to the transparent wall 4 using the suction cup 17.

  As shown in FIGS. 2 and 6, the light irradiation unit 5 includes a belt-shaped annular wiring board 51 having a certain width and a plurality of LEDs 52 attached to the board 51 by soldering. The brightness (light quantity) of the LED 52 can be adjusted by a light control drive signal from the light control unit 12 provided in the control mechanism 16. This light irradiation part 5 is fitted and attached to the bottomed light irradiation part support groove M2 provided just inside the transparent wall support groove M1. The bottom surface of the light irradiation portion support groove M2 is inclined so that the inside is downward, and each LED 52 fitted in the light irradiation portion support groove M2 is below the upper surface of the support wall 31c as shown in FIG. It is installed so that its optical axis is slightly upward. Furthermore, in order to make the light irradiation part 5 difficult to see from the viewer, the part of the support wall 31c outside the transparent wall 4 is raised compared to the height of the opening part of the light irradiation part support groove M2. The heat generated from the LED 52 is radiated by the fins 313 through a heat radiation member 314 such as silicon. As shown in FIG. 6, the wiring board 51 is a flexible board having a partial annular shape with a notch in the planar state, and the LED 52 is attached to the wiring board 51 in the planar state, and then the wiring board. By making the notch sides 53 of 51 close to each other or connected to each other, they are inclined along the bottom surface of the light irradiation portion support groove M2.

  As shown in FIGS. 7 and 8, each of the reflecting portions 6 is very small and very thin on the order of microns, and the transparent portion 6 is formed so that a fine gap S is formed between them. Random pitch of, for example, 0 comma order of several millimeters over almost the entire inner surface 4a of the wall 4 (of course, the pitch may be equal, or may be set so that the pitch becomes smaller as the distance from the light irradiation unit 5 increases, for example). They are arranged vertically and horizontally. Each reflecting portion 6 is of an irregular shape such as a cloud shape having a shape different from each other in plan view (of course, may be a circular shape or the like), and is a reflection that diffuses light diffusely arranged on the exhibition space 2 side. A multi-layer structure including a layer 61 and a light blocking / absorbing layer 62 that covers the surface of the reflective layer 61 on the side of the anti-exhibition item storage space and is directly attached to the lower surface 4a of the transparent wall 4 is formed. FIG. 7 is a schematic diagram in which the thickness and size of the reflecting portion 6 are exaggerated.

  The reflective layer 61 is formed of, for example, a white pigment containing a particulate reflective filler (not shown), which is a light diffusing member, and is mainly a light reflecting surface that is exposed on the exhibition space 2 side. To reflect. Since the reflection layer 61 is very thin, it has a slight light transmittance, but a part of the light entering the inside is diffused and reflected by the reflection filler. On the other hand, the light blocking / absorbing layer 62 is formed using a matte black material (for example, brown or gray) such as chromium oxide (CrO2). In this embodiment, the reflectance of light from the inside is further increased. For reasons of improvement, a chromium layer 622 having a mirror surface is further provided on the inner surface of the chromium oxide layer 621 so that light that has entered the reflective layer 61 is also reflected by the surface of the chromium layer 622. Yes.

  These reflecting portions 6 are formed by a method as shown in FIGS. First, the inner surface 4a of the transparent wall 4 is covered with the chromium oxide layer 621 and the chromium layer 622 in this order, and the surface of the chromium layer 622 is covered with the photopolymer PP. Next, a laser beam is irradiated to a site where the gap S is formed, and the photopolymer PP at that site is removed. Then, the chromium layer 622 and the chromium oxide layer 621 exposed by removing the photopolymer PP by laser light irradiation are removed by etching. Thereafter, by removing the photopolymer PP, only the light blocking absorption layer 62 is formed first. Finally, although not shown, the reflective portion 6 is formed by applying a pigment for forming the reflective layer 61 to the surface of the light blocking / absorbing layer 62 by using a printing technique or the like. In this embodiment, the reflective layer 61 is made slightly smaller than the light shielding / absorbing layer 62 in order to allow even a slight misalignment such as printing.

  According to the display case according to the present embodiment configured as described above, a part of the light emitted from the LED 52 is reflected and scattered inward by the reflecting portion 6, and the light is emitted to the exhibit 1 in the exhibit accommodation space 2. It will be irradiated.

  However, according to the present display case configured as described above, since the reflecting portion 6 is very fine and is disposed with a gap, the exhibit accommodation space illuminated by the reflected scattered light. The exhibit 1 in 2 can be seen through the transparent wall 4 from all 360 ° directions including directly above without being disturbed by the reflecting portions 6.

  In addition, at this time, if the reflecting portion 6 reflects light from the outside of the display case or transmits and diffuses light from the inside, the reflecting portion 6 shines brightly or looks whitish. In order to prevent such a phenomenon, the light blocking / absorbing layer 62 provided in the reflecting portion 6 prevents such a phenomenon. For example, it can be clearly seen in a bright room from outside at night through a screen door. Similarly to being able to do, the illuminated exhibit 1 can be clearly seen from the outside.

  Further, since only the transparent wall 4 is placed above the base 3, the appearance is simple and the image of the exhibit 1 is not impaired. Furthermore, since the outside of the transparent wall 4 in the support wall 31c is raised and the light irradiation unit 5 is fitted in the light irradiation unit support groove M2, the display 1 is irradiated with light from the surroundings. Regardless, since the light source is not known at first glance, it can give the viewer a mysterious and fantastic feeling.

  In particular, in this display case, the internal environment can be automatically managed by the light irradiation unit 5, the temperature adjustment mechanism 9, the humidity adjustment mechanism 10, the water supply mechanism 15, the fan 14, and the like, so that plants can be grown indoors regardless of the season. Therefore, for example, in a restaurant or hotel room, this exhibition case containing plants can be placed on a desk or floor, or hung on a wall to create a completely new interior that has never existed before. Will spread greatly.

  Furthermore, since the plant 1 in the interior fluctuates due to the wind generated by the fan 14, a natural atmosphere can be created, and the viewer can be "healed" by the fluctuating plant 1 and the light applied to it. Become.

  Further, since the transparent wall 4 has a hemispherical dome shape, the direct light from the LED 52 is not only reflected by the reflecting portion 6, but also reflected one or more times inside the transparent wall 4 as shown in FIG. Since the light can also be reflected by the reflecting portion 6, the loss of light can be reduced, and the plant 1 on display can be sufficiently illuminated.

  Next, a modified example of the reflecting portion 6 will be given. In this modified example, the same reference numerals are given to members corresponding to the embodiment.

  The reflecting portion 6 is smaller and thinner than the first embodiment, and has a diameter of approximately 50 μm and a thickness of 0.1 to 0.2 μm. Of course, a cloud shape or the like may be used as in the previous embodiment.

  Specifically, this has a layer structure including an intermediate layer 63 directly attached to the inner surface 4a of the transparent wall 4, and a reflective layer 61 that covers the surface and side surfaces of the intermediate layer 63 and diffuses and reflects light.

  The reflective layer 61 is formed of a metal such as nickel (Ni) or chromium (Cr), for example, and has a plurality of irregularities provided on the surface thereof, and mainly diffuses and reflects light. . On the other hand, the intermediate layer 63 is an ITO film which is a conductive thin film, and has a property that a metal can be coated on the surface thereof by plating or the like.

  These reflecting portions 6 are attached to the transparent wall 4 as shown below, for example.

  First, as shown in FIG. 12, an intermediate layer 63 is formed by depositing an ITO film on the inner surface 4a of the transparent wall 4 by a method such as sputtering or vapor deposition, and the surface of the intermediate layer 63 is covered with a photopolymer PP. . Next, as shown in FIG. 13, the part where the gap S is formed is irradiated with laser light or the like, and the photopolymer PP at that part is removed. Then, as shown in FIG. 14, the intermediate layer 63 exposed by removing the photopolymer PP is removed by etching, and then the photopolymer PP is removed, so that only the disc-shaped intermediate layer 63 is formed. Thereafter, the lower surface 4a of the transparent wall 4 is plated as shown in FIG. At this time, the plating does not adhere to the glass, but adheres only to the ITO film of the intermediate layer 63, so that the reflective layer 61 is a metal such as nickel (Ni) or chromium (Cr) only on the surface and side surfaces of the intermediate layer 63. Thus, the reflecting portion 6 is generated. At this time, no metal layer is formed on the exposed portion of the transparent wall 4 where there is no ITO film, and a gap S is formed between the reflecting portions 6.

  Therefore, in such a case, the reflective layer can be accurately obtained without being displaced only on the surface and side surfaces of the ITO film forming the intermediate layer 63 remaining after the etching, by simply plating the lower surface 4a of the transparent wall 4 uniformly. Not only can 61 be formed, but also the positioning operation required by the method of forming the reflective layer 61 using the printing technique as in the first embodiment is not required, so that labor can be saved.

  Further, as shown in FIG. 16, the reflective surface of the reflective portion 6 attached to the transparent wall 4 may be covered with a transparent film F made of resin or the like. Here, the transparent film F covers not only the reflective portion 6 but also the inner surface 4a of the transparent wall 4. However, of course, only the reflective surface may be covered. In such a case, as shown in the figure, an angle that is refracted when light enters the transparent film F and is more perpendicular to the surface of the reflecting portion 6 than that without the transparent film. Since the light hits, the diffusion effect at the time of reflection increases. Further, the transparent film F also serves to protect the reflecting portion 6.

  Further, such a reflection portion 6 may be provided on the outer surface 4 e (see FIG. 2) of the transparent wall 4, or may be provided inside the transparent wall 4, that is, on the inner surface of the outer wall 41 or the outer surface of the inner wall 42.

  In addition, the shape of the display case is not limited to the above embodiment, and may be, for example, a rectangular parallelepiped or a cylindrical shape.

  Second Embodiment

  The second embodiment will be described below with reference to the drawings. In addition, the same code | symbol is attached | subjected to the member corresponding to the said 1st Embodiment.

  In the display case according to this embodiment, the basic configuration of the base 3 and the transparent wall 4 is substantially the same as that of the first embodiment, but the arrangement of the light irradiation unit 5 as shown in FIGS. 17 and 18 is shown. The position and the configuration of the reflecting portion 6 are different from those of the first embodiment.

  The light irradiation part 5 is arranged so as to face the lower end surface 4c of the transparent wall 4 or its LED 52 is embedded in the lower end part 4b of the transparent wall 4, and introduces light into the transparent wall 4, Using the difference in refractive index with the outside air, the outer surface 4e and the inner surface 4a of the transparent wall 4 totally reflect light into the transparent wall 4, and the inside of the transparent wall 4 travels upward.

  As in the above-described embodiment, each of the reflecting portions 6 is very small and extremely thin on the order of microns, and the outer surface of the transparent wall 4 is formed so that a minute gap S is formed between them. 4e is arranged vertically and horizontally on a substantially entire surface, for example, on the order of 0 comma several millimeters with a random pitch (of course, an equal pitch may be used). Each reflecting portion 6 has a cloud shape having a shape different from each other in a plan view (of course, may be a circular shape or the like), and a reflecting layer 61 that irregularly reflects light directly attached to the outer surface 4e of the transparent wall 4. And a light blocking / absorbing layer 62 that covers the surface of the reflective layer 61 on the side of the anti-exhibit accommodation space side. FIG. 18 is a schematic diagram, and the thickness and size of the reflecting portion 6 are exaggerated.

  If it is such, after the light emitted from the light irradiation part 5 will be guide | induced to the inside of the transparent wall 4, and will advance upwards, it will be reflected and scattered below by the reflection part 6, and will be irradiated to the exhibit 1 . Therefore, since the reflection part 6 is very fine, the same effects as those of the first embodiment can be obtained without impairing the visibility of the exhibit 1. Moreover, since almost all the light emitted from the LED 52 can be reflected, the efficiency can be improved.

  <Third Embodiment>

  A third embodiment will be described below with reference to the drawings. In addition, the same code | symbol is attached | subjected to the member corresponding to the said 1st Embodiment.

  In the display case according to this embodiment, the basic configuration of the base 3 and the transparent wall 4 is substantially the same as that of the first embodiment and the light irradiation unit 5 is the same as that of the second embodiment. The structure of the reflection part 6 is different from the first and second embodiments as shown in FIG.

  The reflecting portion 6 is a thin strip-like reflecting plate 64 that circulates horizontally and is provided in the thickness direction inside the vicinity of the top of the transparent wall 4, for example, and is arranged so that the reflecting surface 641 faces downward. The reflective surface 641 may be roughened to be a scattering surface. As shown in FIG. 21, for example, the reflective surface 64 is formed by dividing the transparent wall 4 into two parts, an upper part 43 and a lower part 44, and the cut surface 431 of the upper part 43 or the cut surface 441 of the lower part 44 is used as a vapor deposition surface. By forming. In addition, the reflection part 6 may be a plate-shaped member such as a reflection plate.

  In such a case, the light emitted from the light irradiation unit 5 is guided to the inside of the transparent wall 4 and travels upward, and then is reflected and scattered downward by the reflector 64 to be irradiated to the exhibit 1. . Therefore, since the reflecting portion 6 is very thin, the same effect as that of the first embodiment can be obtained without impairing the visibility of the exhibit 1. Moreover, since almost all the light emitted from the LED 52 can be reflected, the efficiency can be improved.

  <Fourth embodiment>

  The fourth embodiment will be described below with reference to the drawings. In addition, the same code | symbol is attached | subjected to the member corresponding to the said 1st Embodiment.

  In the display case according to this embodiment, the basic configuration of the base 3 and the transparent wall 4 is substantially the same as that of the first embodiment, but the light irradiating portion is schematically shown in FIG. 22 and FIG. The optical fiber 7 is disposed on the inside, the outer surface, or the inner surface of the transparent wall 4 in place of the reflecting portion 4.

  One or a plurality of optical fibers 7 are arranged along the transparent wall 4, and both end faces 71 are positioned in the vicinity of the lower end of the transparent wall 4. And LED52 which comprises the light irradiation part 5 is arrange | positioned facing each end surface 71 of the optical fiber 7. FIG. In addition, the side peripheral surface of each optical fiber 7 is provided with a notch 8 that intermittently faces the exhibit, and is configured to irradiate the exhibit 1 with light leaking from the notch 8. The distance between the notches 8 is made closer to the LED 52, that is, the closer to the middle of the optical fiber 7, the closer to the end. The intensity of the leaking light is stronger as it is closer to the LED 52, so that the light is emitted substantially uniformly from the side peripheral surface of the optical fiber 7 by adjusting the interval between the notches 8. Of course, it may be equally spaced.

  If it is such, the light introduce | transduced into the inside from each end of the optical fiber 7 will leak to the display goods 1 in each notch part 8, and will irradiate this from the circumference | surroundings. Since the optical fiber 7 is thin and transparent, even with such a configuration, the same effects as those of the first embodiment can be achieved without impairing the visibility of the exhibit 1.

  <Other modified embodiments>

  The present invention is not limited to the above embodiments.

  For example, a light irradiation part is not restricted to what used LED. You may make it automatically control the color and light quantity of the light inject | emitted from a light irradiation part according to time, a season, the kind of plant, etc.

  Moreover, you may use not only for a plant growth display but as a display case which displays an ornament and a sculpture. Depending on the type of exhibits to be displayed inside, there may be no temperature adjustment mechanism or humidity adjustment mechanism.

  The transparent wall may have a single-layer structure or three or more layers. Moreover, the shape is not limited to a hemispherical dome shape, and may be a rectangular parallelepiped or a square cone shape.

  Furthermore, since the LED can suppress power consumption with high efficiency, the display case may be built in a battery so that external wiring is unnecessary. By doing so, the degree of freedom of installation and the appearance are further improved.

  In addition, as shown in a schematic functional block diagram in FIG. 24, the light control circuit 164 has the following configuration, that is, an audio signal indicating sound such as music, sutra, or birdsong, waves and wind sounds. Audio signal reception unit 1641 that receives audio signal storage unit 1642 that stores audio signals received by audio signal reception unit 1641 or previously input audio signals, audio signal storage unit 1642, or audio signal reception unit 1641 A pattern control unit 1643 that acquires a signal and controls a light emission pattern of light emitted from the LED in accordance with at least one of the volume, tone color, and pitch of the voice indicated by the voice signal may be provided. Absent.

  The audio signal reception unit 1641 in this example includes, for example, an audio input terminal (not shown), and connects the audio input terminal and an audio output terminal such as a microphone, a CD player, or a video deck with a cable, so that the user's preference can be obtained. Music or the like can be received as a digital or analog audio signal.

  The audio signal storage unit 1642 is set in a predetermined area of a volatile or non-volatile memory. The memory may be a removable portable type (FDD, CD, etc.).

  As shown in FIG. 25, the pattern control unit 1643 changes the duty ratio of the LED while applying a constant voltage pulse signal to the LED, for example, in accordance with the volume vibration waveform of the audio signal, thereby changing the light emission pattern of the LED, that is, the amount of light. Is. Of course, as shown in FIG. 26, the light intensity may be changed by changing the pulse height (voltage) so as to follow the volume vibration waveform of the audio signal while keeping the duty ratio constant.

  If this is the case, it will be possible to impress the viewer with a unique landscape that makes the image of sunlight leak through the image of a natural but natural light. Further, depending on the content of the audio signal, it is possible to promote plant growth and obtain a relaxation effect for the viewer.

  In addition, the audio signal may indicate a tone color or pitch, and the light emission pattern may be one in which the emission color is changed in addition to the amount of light.

  In addition to providing an optical signal reception unit in place of the audio signal reception unit, natural light fluctuations such as sunbeams and shimmering waves obtained by detecting with an optical sensor or extracting from image data are also provided. The light fluctuation signal may be received by the optical signal receiving unit, and the light emitted from the LED may be shaken in the pattern control circuit in the same manner as the light fluctuation.

  In short, a fluctuation signal conversion circuit that converts fluctuations that occur naturally in nature and can be sensed by humans with five senses into fluctuation signals that are electrical signals, and are emitted from the LEDs in accordance with the fluctuations indicated by the fluctuation signals. What is necessary is just to have a pattern control circuit that controls the light emission pattern so that at least one of the amount of light or the color of the light changes.

  Further, the reflection part may be meshed as shown in FIG. 27, or as shown in FIG. 28, the reflection layer 61 and the light blocking layer 62 are spaced apart from each other on the inner and outer surfaces of the transparent wall 4 in the thickness direction. You may make it provide.

<Fifth Embodiment>

  The fifth embodiment will be described below with reference to the drawings. In addition, the same code | symbol is attached | subjected to the member corresponding to the said 1st Embodiment.

  In the display case according to this embodiment, the basic configuration of the base 3 is substantially the same as that of the first embodiment, but the light irradiation unit 17 having the function of the reflection unit 6 is integrated with the transparent wall 4. Different.

  Specifically, as shown in FIGS. 29 and 30, the display case includes a transparent wall 4, a plurality (many) of organic EL elements 18 provided on one surface of the transparent wall 4, and the transparent wall 4. And a power supply unit (not shown) that supplies current to the organic EL element 18.

  The organic EL element 18 has a sandwich structure in which a light emitting layer 181 is sandwiched between two electrode layers 182 and 183 as schematically shown in an end view of FIG. When a voltage is applied to the light emitting layer 181 and a current is supplied to the light emitting layer 181, light is emitted spontaneously. Note that the transparent wall 4 is actually hemispherical as described above, and the organic EL element 18 is also curved along the shape, but is enlarged in FIG. It is shown for convenience.

  Here, for example, a transparent material such as ITO is used for the electrode layer 182 (anode) on the exhibit accommodation space side, and a non-transparent metal plate is used for the electrode layer 183 (cathode) on the anti-exhibit accommodation space side. ing. The non-transparent electrode layer 183 (cathode) has a mirror surface for reflecting light (surface 183a on the light emitting layer side), and a surface 183b on the counter-exhibit material storage space side is light. In order to prevent reflection and scattering, black matte plating or the like for shielding or absorbing light is applied.

  For example, polyphenylene vinylene (PPV (poly (phenylene vinylene)) is used for the light emitting layer 181. However, a low molecular weight material may be used. Although the electrode layers 182 and 183 are directly attached, a configuration in which the electrode layers 182 and 183 are attached via a hole transport layer and an electron transport layer may be used.

  The organic EL element 18 as a whole has a very small thickness of several hundred nm or less, and the individual size (size in a direction orthogonal to the thickness direction) is very small, such as several tens of μm.

  In this embodiment, as shown in FIG. 29, the organic EL element 18 has a structure in which a large number of organic EL elements 18 are arranged with a gap S therebetween in plan view.

  More specifically, as shown in FIG. 29, electrodes as a whole of the organic EL element 18 that connect the electrode layers 182 of the adjacent organic EL elements 18, 183, and the light emitting layers 181 and also include the light emitting layers. The layers 182 and 183 and the light emitting layer 181 are configured to have a network shape such as a square lattice shape.

  Next, the operation of the light irradiation unit 17 configured as described above will be described below.

When power is supplied, light is emitted from each organic EL element 18 toward the exhibit 1. More specifically, the light generated in the light emitting layer 181 is reflected directly or by the non-transparent electrode layer 183, travels toward the transparent electrode layer 182, passes through the transparent electrode layer 182, and is irradiated to the exhibit 1. The exhibit 1 is illuminated uniformly with this light.

On the other hand, since the organic EL element 18 is fine, the organic EL element 18 does not interfere with viewing the exhibit 1 so that a bright room can be seen through the screen. In particular, in this embodiment, the surface 153b of the organic EL element 18 on the side opposite to the exhibit is a light shielding surface that suppresses reflection and scattering of light, so that the reflected light from the organic EL element 15 looks at the exhibit 1 It won't get in the way.

  Therefore, according to the light irradiation unit according to the present embodiment configured as described above, each organic EL element 18 arranged with a uniform density emits light spontaneously, so that uniform illumination without uneven illuminance is performed. Can do.

  Furthermore, this light irradiation part 17 is the structure which only the very thin organic EL element 18 was affixed on the one surface 4a of the transparent wall 4, and can be made into the same magnitude | size as the transparent wall 4 itself. Therefore, further downsizing and weight saving can be greatly promoted as compared with the conventional one.

  In addition, since the organic EL element 18 can be relatively easily enlarged, a light irradiation device having a large light emission area can be produced. Furthermore, since the individual organic EL elements 18 can be made very fine, interference fringes (moire) can be suppressed.

  Note that each EL element may have a square lattice shape, a triangular lattice shape, or the like as long as it has a net shape, or may be provided discontinuously in a dot matrix shape.

Further, only the electrode layer of the EL element may have a mesh shape, and the light emitting layer may have a discrete arrangement such that the light emitting layer is only at the meshed intersection.

  Furthermore, an EL element may be provided on the surface of the transparent wall on the side of the counter-exhibition item accommodation space, or the EL element may be embedded in the thickness of the transparent wall.

  In addition, the EL element may be configured to illuminate the exhibit with various shades as a configuration of not only a single color but also three primary colors.

  In addition, it goes without saying that some or all of the above-described embodiments and modified embodiments may be combined as appropriate, and the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit thereof. is there.

The perspective view of the display case in one embodiment of the present invention. The center longitudinal regular end view which shows the internal structure of the display case in one Embodiment of this invention. The hardware block diagram which shows the hardware configuration of the control mechanism in the embodiment. The functional block diagram which shows the relationship between the control circuit of the control mechanism in the same embodiment, and a control object. The typical block diagram of the panel surface of the control mechanism in the embodiment. The block diagram in the planar state before the assembly of the light irradiation part in the embodiment. The partial expanded end view which mainly shows the reflective part in the embodiment. The partial enlarged plan view which mainly shows the reflection part in the embodiment. Explanatory drawing which shows the manufacture procedure of the reflection part in the embodiment. Explanatory drawing which shows the manufacture procedure of the reflection part in the embodiment. Explanatory drawing which shows the manufacture procedure of the reflection part in the embodiment. Explanatory drawing which shows the manufacture procedure of the reflection part in the modification of the embodiment. Explanatory drawing which shows the manufacture procedure of the reflection part in the modification. Explanatory drawing which shows the manufacture procedure of the reflection part in the modification. The enlarged view which mainly shows the reflection part in the modification. The fragmentary sectional view which shows the reflection part in the further another modification of the embodiment. Sectional drawing which mainly shows the light reflection part in 2nd Embodiment, a transparent wall, and a reflection part. The partial expanded end view which mainly shows the reflective part in the embodiment. Sectional drawing which mainly shows the light irradiation part, transparent wall, and reflection part in 3rd Embodiment. The typical perspective view which mainly shows the light irradiation part in the same embodiment, a transparent wall, and a reflection part. The typical perspective view which shows a mode that the transparent wall in the same embodiment was divided | segmented into two. Sectional drawing which mainly shows the light irradiation part, transparent wall, and optical fiber in 4th Embodiment. The typical perspective view which mainly shows the light irradiation part in the same embodiment, a transparent wall, and an optical fiber. The functional block diagram of the light control circuit in other embodiment of this invention. FIG. 5 is an exemplary diagram illustrating an example of control of a light emission pattern in the embodiment. The example of other examples of control of the luminescence pattern in the embodiment. The partial enlarged plan view which mainly shows the reflection part in other embodiment of this invention. The partial expanded sectional view which mainly shows the reflection part in other embodiment of this invention. The partial enlarged plan view which mainly shows the light irradiation part 17 in 5th Embodiment. The AA line partial end elevation in FIG.

Explanation of symbols

1 ... Exhibits (plants)
2 ... Exhibition space 3 ... Base 32 ... Plant mounting table 4 ... Transparent wall 5 ... Light irradiation part 52 ... LED
6 ... Reflecting part 61 ... Reflecting layer 62 ... Light blocking / absorbing layer 7 ... Optical fiber 8 ... Notch 9 ... Temperature adjusting mechanism 10 ... Humidity adjusting mechanism 12 ... Light control unit 13 ... handle 17 ... light irradiation unit 18 in the fifth embodiment ... organic EL element

Claims (22)

A base for installing exhibits,
A transparent wall which is provided so as to cover the upper part from the peripheral edge of the base, and forms an exhibit accommodation space with the base;
A light irradiation unit provided on the base and irradiating light from the inside toward the transparent wall;
A plurality of fine reflecting portions provided on the inside, the outer surface, or the inner surface of the transparent wall and arranged with a gap between each other to reflect the light from the light irradiation portion into the exhibit accommodation space. Characteristic display case. A base for installing exhibits,
A transparent wall which is provided so as to cover the upper part from the peripheral edge of the base, and forms an exhibit accommodation space with the base;
A light irradiation unit provided on the base and irradiating light from the inside toward the transparent wall;
A reflection part provided in the inside, the outer surface or the inner surface of the transparent wall and formed in a net shape for reflecting the light from the light irradiation part into the exhibit accommodation space, and the net of the reflection part formed in the net shape An exhibition case characterized by a fine line-shaped part surrounding the eyes .   The reflective section includes a reflective layer having one surface exposed to the exhibit accommodation space side as a reflective surface, and a light blocking / absorbing layer formed on the other surface side of the reflective layer. The display case according to 1 or 2.   The display case according to claim 3, wherein the light blocking / absorbing layer has a slightly larger area than the reflective layer.   The display case according to claim 3 or 4, wherein the reflective layer is provided on the inner surface of the transparent wall, and the light blocking / absorbing layer is provided on the outer surface of the transparent wall at a position corresponding to the reflective layer.   The display case according to any one of claims 1 to 5, wherein the reflecting surface set in the reflecting portion is configured to be covered with a transparent film that increases a light diffusing action.   The display case according to any one of claims 1 to 6, wherein the light irradiation unit is installed around the inside of the transparent wall of the base. A base for installing exhibits,
A transparent wall which is provided so as to cover the upper part from the peripheral edge of the base, and forms an exhibit accommodation space with the base;
A light irradiating unit disposed at the base end of the transparent wall or facing the base end of the transparent wall and irradiating light inside the transparent wall;
A plurality of fine reflecting portions provided on the outer surface of the transparent wall and arranged with a gap between each other to reflect the light traveling through the transparent wall into the exhibit accommodation space. Characteristic display case. A base for installing exhibits,
A transparent wall which is provided so as to cover the upper part from the peripheral edge of the base, and forms an exhibit accommodation space with the base;
A light irradiating unit disposed at the base end of the transparent wall or facing the base end of the transparent wall and irradiating light inside the transparent wall;
A reflection part formed in a net shape that is provided on the outer surface of the transparent wall and reflects the light traveling inside the transparent wall into the exhibit accommodation space, and the net of the reflection part formed in the net shape An exhibition case characterized by a fine line-shaped part surrounding the eyes .   The apparatus further includes a temperature adjusting mechanism for adjusting the temperature in the exhibit accommodation space surrounded by the base and the transparent wall, and has a plant mounting table for using the base as a display. The display case according to any one of claims 1 to 9, wherein the plant can be grown.   The transparent wall has a double structure including an outer wall and an inner wall provided to be separated from the inner side of the outer wall, and has a heat insulating layer in a space formed by the outer wall and the inner wall. The display case according to any one of 1 to 10.   The display case according to claim 1, further comprising a light control circuit that controls at least one of a light amount and a color of light emitted from the light irradiation unit.   The light control circuit converts fluctuations that occur naturally in the natural world and can be felt by the human senses, such as waves and wind sounds, bird singing, sunbeams, and sparkling waves, to fluctuation signals that are electrical signals. A signal conversion circuit, and a pattern control circuit that controls a light emission pattern so that at least one of a light amount or a color of light emitted from the LED changes in accordance with fluctuations indicated by the fluctuation signal. Item 12. A display case according to item 12.   The light control circuit receives a sound signal indicating a sound such as music or a message, and a light emitted from the LED in accordance with at least one of a sound volume, a tone color, and a pitch indicated by the sound signal. The display case according to claim 13, further comprising: a pattern control circuit that controls a light emission pattern so that at least one of the amount of light or the color of the light changes.   The display case according to claim 1, wherein the transparent wall has a substantially hemispherical shape.   The display case according to claim 1, wherein a handle is detachably provided on the transparent wall.   The display case according to claim 1, wherein the light irradiation unit uses an LED as a light source.   The display case according to claim 1, further comprising a fan for generating wind in the display article accommodation space. A base for installing exhibits,
A transparent wall which is provided so as to cover the upper part from the peripheral edge of the base, and forms an exhibit accommodation space with the base;
A fine EL element supported on the inner, outer or inner surface of the transparent wall,
The fine EL element includes a transparent electrode layer disposed on the exhibit accommodation space side, a non-transparent electrode layer disposed on the counter-exhibit accommodation space side, and a light emitting layer disposed between the electrodes and emitting light by applying voltage. A display case characterized in that a large number of fine gaps are arranged between each other.   The display case according to claim 19, wherein the EL element is an organic EL element.   The display case according to claim 19 or 20, wherein a surface on the light emitting layer side of the non-transparent electrode layer is a light reflecting surface, and a surface on the opposite side is a light shielding surface that shields or absorbs light. A base for installing exhibits,
A transparent wall which is provided so as to cover the upper part from the peripheral edge of the base, and forms an exhibit accommodation space with the base;
A fine EL element supported on the inner, outer or inner surface of the transparent wall,
The fine EL element includes a transparent electrode layer disposed on the exhibit accommodation space side, a non-transparent electrode layer disposed on the counter-exhibit accommodation space side, and a light emitting layer disposed between the electrodes and emitting light by applying voltage. It is equipped with
The electrode layers of adjacent EL elements are connected to each other, and the electrode layer as a whole EL element is configured to have a net-like shape, and a linear portion surrounding the mesh of the net-like electrode layer is formed. An exhibition case characterized by being finely formed .