JP2007133118A - Optical display device and optical pen - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical pen irradiating a light storage sheet with UV and to provide an optical display device having the light storage sheet whose part irradiated with UV emits light. <P>SOLUTION: The optical pen emitting UV and the optical display device wherein the light storage sheet receiving UV and emitting light is stuck to a supporting plate are provided. The optical pen has a cylindrical pen main body, a light emitting diode emitting UV from the tip of the pen main body, a cell incorporated into the pen main body and applying a prescribed voltage to the light emitting diode, wiring connecting the cell to the light emitting diode, and a switch connected to the wiring and controlling light emission and suspension of the light emitting diode. The optical display device has the supporting plate and the light storage sheet which is stuck to one surface of the supporting plate and in which a light storage material is kneaded. A reflection layer of a white color is provided on a first surface of the supporting plate and the light storage sheet is formed on the reflection layer. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an optical display device and an optical pen that exclusively uses the properties of the phosphorescent sheet in the optical display device, and in particular, irradiates the phosphorescent sheet surface of the optical display device with ultraviolet light emitted from the optical pen. The present invention relates to a technique effective when applied to an optical display technique for drawing desired characters, symbols, patterns, etc., and then displaying the characters, symbols, patterns, etc. emitted from a phosphorescent sheet surface and emerging.

  As one of the illumination methods, a fluorescent paint or a phosphorescent paint is formed on the surface of the object by a method such as printing, and then the fluorescent paint or the phosphorescent paint is excited by irradiating a light beam that glows in the near ultraviolet region, A method of performing illumination by self-light emission is known (for example, Patent Document 1).

JP-A-8-137419

While studying the mounting of light emitting diodes (LEDs), it was found that blue light effectively emitted the phosphorescent material from ultraviolet rays (ultraviolet light) having a wavelength of around 380 nm to 480 nm.
Therefore, the present inventor condenses ultraviolet light on a sheet of phosphorescent material and moves the ultraviolet light along the sheet surface to obtain desired characters, symbols, patterns, etc. from the sheet surface. The present invention was made by realizing that self-light emission can be performed for a long time.
An object of the present invention is to provide an optical display device capable of displaying a written character, symbol or desired pattern by self-emission for a predetermined time.
Another object of the present invention is to provide an optical display device capable of effectively displaying a written character, symbol or desired pattern even in the dark for a predetermined time.
Another object of the present invention is to provide an optical pen that can easily display characters, symbols or a desired pattern on the optical display device.
The above and other objects and novel features of the present invention will be apparent from the description of this specification and the accompanying drawings.

The following is a brief description of an outline of typical inventions disclosed in the present application.
(1) An optical display device includes a support plate having a flat first surface, and a phosphorescent material that is attached to the first surface of the support plate and emits light (self-emission) upon receiving ultraviolet light. It has the luminous sheet | seat kneaded. Moreover, it has a light-shielding cover that is attached to one side of the support plate so as to be openable and closable and covers the phosphorescent sheet during the closing operation. In addition, a white reflective layer is provided on the first surface of the support plate, and the phosphorescent sheet is formed on the reflective layer.

  On the other hand, an optical pen is used to write characters, symbols, or a desired pattern on the phosphorescent sheet of the optical display device. The optical pen includes a cylindrical pen body, a light-emitting diode that is built in the tip side of the pen body and emits ultraviolet light from the tip of the pen body, and a light-emitting diode that is built in the pen body and attached to the light-emitting diode. The battery includes a battery to which a predetermined voltage is applied, a plurality of wirings that connect the batteries and the light emitting diodes, and a switch that is connected to the wirings and controls light emission and light emission stop of the light emitting diodes.

  When displaying on the optical display device, first, using the optical pen, desired characters while moving along the phosphorescent sheet surface of the optical display device in a state where ultraviolet light is emitted from the tip of the optical pen, Draw symbols, patterns, etc. The phosphorescent sheet portion that has received ultraviolet light is excited to emit light (self-emission). As a result, with the optical pen removed from the optical display device, self-emission continues for a predetermined time, and desired characters, symbols, patterns, etc. are displayed by the optical display device.

  (2) In the optical display device having the configuration of (1), an elastic light-shielding layer is provided on the entire periphery of the surface overlapping the support plate of the cover, and when the cover is closed, The phosphorescent sheet is configured to be shielded from light by the cover and the light shielding layer so that external light does not reach.

  (3) In the optical pen in the configuration of (1), the switch has a movable button that elastically turns on and off, and the switch passes the light emitting diode through the movable button in the pen body. The light emitting diode is configured to emit light only when the light emitting diode is pushed into the pen body.

  (4) In the optical display device having the configuration of (1), the optical display device is a flat plate structure support plate and a phosphorescent material that is attached to the first surface of the support plate and emits light by receiving ultraviolet light. A phosphorescent sheet kneaded with a material and a case formed of a light-shielding material that accommodates the support plate, and the phosphorescent sheet is shielded by the case when the support plate is accommodated in the case. It is configured.

  (5) In the optical display device having the configuration of (1), the optical display device is kneaded with a support plate and a phosphorescent material that is attached to the first surface of the support plate and emits light by receiving ultraviolet light. The support plate is provided with a handle to form a placard type optical display device.

  (6) In the optical display device having the configuration of (1), the optical display device includes a support plate made of a frame, and a phosphorescent material that has a peripheral edge attached to the support plate and emits light by receiving ultraviolet light. It has the luminous sheet | seat kneaded.

  The effects obtained by the representative ones of the inventions disclosed in the present application will be briefly described as follows.

  According to the means (1), (a) a desired character, symbol, pattern, or the like is drawn while moving the optical pen along the phosphorescent sheet surface with ultraviolet light emitted from the tip of the optical pen. it can. Since the phosphorescent sheet portion that has received ultraviolet light is excited to self-emit, the optical display device can display the characters, symbols, patterns, etc. for a predetermined time.

  (B) Since the phosphorescent sheet is formed on the white reflective layer formed on the first surface of the support plate, a part of the light generated by the phosphorescent sheet is directly radiated into the atmosphere and applied to the reflective layer. Since the light to be reflected is reflected by the reflection layer, passes through the phosphorescent sheet and is emitted into the atmosphere, the displayed characters and the like become clear.

  (C) The light quantity of characters and the like displayed on the phosphorescent sheet of the optical display device decreases with time. Therefore, when the notation is written on the phosphorescent sheet with an optical pen, characters and the like written later can be displayed with a stronger light intensity than the characters drawn earlier. Due to the difference in the amount of light due to the difference in time difference, there is an advantage that various displays can be performed.

  (D) If the phosphorescent sheet is covered with the cover for a predetermined time after notation on the phosphorescent sheet, the phosphorescent sheet surface is in a state of no display, so that it can be represented again by the optical pen.

  (E) Light emission and light emission stop of the light emitting diode can be controlled by turning on / off the switch of the optical pen.

  According to the means (2), in addition to the effect of the configuration (1), the cover is provided with a light shielding layer, and the phosphorescent sheet is completely shielded by the cover and the light shielding layer when the cover is closed. Since it is configured, the phosphorescent sheet surface after a predetermined time does not have a self-emitting portion, and there is an effect that a new notation with an optical pen is possible.

  According to the means (3), in addition to the effect of the configuration (1), the optical pen is configured such that the light emitting diode emits light only when the light emitting diode is pushed into the pen body. Yes. Therefore, when writing on the optical display device, the light emitting diode is caused to emit light by pressing the tip of the light emitting diode against the phosphorescent sheet and pushing the light emitting diode into the pen body. As a result, it is possible to prevent the occurrence of an accident in which a notifier who handles optics emits ultraviolet light toward another person's eyes or toward his / her own eyes (pupils).

  The means (4) has the effect of the structure (1). The light-shielding of the phosphorescent sheet in the means (4) is not carried out in the case of housing a support plate having a flat structure, instead of the cover structure as described above. In other words, by storing the support plate with the phosphorescent sheet on one side in a case made of a light-shielding material for a predetermined time, the phosphorescent sheet surface after a predetermined time has no self-emitting part, and a new notation by an optical pen Will be possible.

  According to the means (5), since the optical display device is a placard type optical display device having a handle that can be gripped, a large number of optical display devices gathered by raising the optical display device with a handle high. You can show people the display.

  According to the means (6), since the support plate of the optical display device is a frame, when the optical pen is written on one surface of the phosphorescent sheet portion in the frame, the written characters and the like of the phosphorescent sheet There is an effect that it can be seen from the back side.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that components having the same function are denoted by the same reference symbols throughout the drawings for describing the embodiment of the invention, and the repetitive description thereof is omitted.

  1 to 5 are diagrams related to an optical display device and an optical pen that are Embodiment 1 of the present invention. 1 is a schematic view showing an optical display device and an optical pen, FIG. 2 is a schematic sectional view of the optical pen, FIG. 3 is a perspective view showing a part of the optical display device, and FIG. 4 shows a part of the optical display device. FIG. 5 is a perspective view showing a state in which a line is drawn using an optical pen in the optical display device.

FIG. 1 shows an optical display device 1 and an optical pen 30 for drawing characters, symbols, a desired pattern or the like on the optical display device 1.
The optical display device 1 has a rectangular support plate 2 as shown in FIG. As shown in FIG. 4, the support plate 2 is provided with a reflective layer 3 on the first surface 2a. A phosphorescent sheet 4 is affixed on the reflective layer 3. The support plate 2 is made of, for example, an acrylic resin plate. The thickness is not particularly limited as long as it does not deform during use.

  The reflection layer 3 may be a layer that reflects light emitted (emitted) from the phosphorescent sheet 4, and is formed of, for example, a white layer having a thickness of about 0.5 to 1.0 mm. The reflective layer 3 is formed by printing and curing a white resist or the like, and may be Al or Ag metal having high reflectivity.

The phosphorescent sheet 4 is formed of a sheet in which a phosphorescent material is kneaded. In FIG. 1, the phosphorescent sheet 4 is shown with dots. The phosphorescent material is obtained by firing a rare earth element activator containing an aluminate compound as a main component, and is, for example, SrAl ₂ O ₄ : Eu, Dy (chelating material).

  When the phosphorescent sheet 4 is irradiated with ultraviolet light (ultraviolet light), the irradiated portion is excited, and then the irradiated portion emits light (self-emission). The amount of emitted light gradually decreases with time, and after a predetermined time, it becomes invisible. The predetermined time during which visual observation is impossible varies depending on the illuminance of the visual environment and the output of ultraviolet light applied to the phosphorescent sheet 4. When the output of a battery built in the optical pen described later is 3.2 V, the predetermined time is about 5 to 20 minutes (brightness of about 300 lux illuminance by a fluorescent lamp or the like).

  Therefore, the characters, symbols, patterns and the like drawn on the phosphorescent sheet 4 with the optical pen 30 can be viewed and enjoyed for this predetermined time. Further, this display content can be shown to other people. The area | region of the phosphorescent sheet 4 becomes a display surface (notation surface). In FIG. 1, a curve 5 is drawn on the surface of the phosphorescent sheet 4 by the optical pen 30.

  Moreover, the light quantity of the characters displayed on the phosphorescent sheet 4 of the optical display device 1 decreases with time. Therefore, if the optical pen 30 is overlapped and written on the phosphorescent sheet 4, characters and the like written later can be displayed with a stronger light intensity than the previously drawn characters and the like. Due to the difference in the amount of light due to the difference in time difference, there is an advantage that various displays can be performed.

  As shown in FIG. 1, a flat cover 10 is disposed on one side of the optical display device 1. As shown in FIG. 3, the cover 10 is attached to one side of the support plate 2 with a hinge 11 so as to be freely opened and closed. The cover 10 has the same size as the support plate 2 and covers the entire first surface 2a of the support plate 2 when closed. The cover 10 is formed of a light-shielding material, and external light does not reach the phosphorescent sheet 4 when closed. If the cover 10 is closed in this way, light does not reach the phosphorescent sheet 4, and therefore a pattern drawn by the optical pen 30 (for example, the curve shown in FIG. 1) after a predetermined time has elapsed. 5) will disappear. As a result, a new character, symbol, pattern, or the like can be written with the optical pen 30 on the phosphorescent sheet 4 on which characters, symbols, patterns, or the like are not written (displayed).

  The optical pen 30 is an optical pen 30 that uses the properties of the phosphorescent sheet 4 of the optical display device 1 to display characters and the like on the phosphorescent sheet 4 with ultraviolet light. That is, the phosphorescent sheet 4 has a property of effectively self-emitting light when receiving ultraviolet light (ultraviolet light) having a wavelength of around 400 nm. Therefore, a light emitting diode having a wavelength of 400 nm is incorporated in the optical pen 30 so that ultraviolet light is emitted from the tip of the optical pen 30.

  FIG. 2 schematically shows a cross-sectional structure of the optical pen 30. As shown in FIG. 2, the optical pen 30 includes a cylindrical pen body 31, a light emitting diode 32 built in the tip end side of the pen body 31, a battery 33 built in the pen body 31, and a battery 33. Wirings 34 and 35 connect the anode and cathode electrodes to the anode and cathode electrodes of the light emitting diode 32, and a switch 36 connected in series in the middle of the wiring 35. Then, by sliding the slide button 37 of the switch 36, the light emitting diode 32 enters a light emission (ON) state or a light emission stop (OFF) state. In FIG. 2, the light emitting diode 32 emits ultraviolet light by sliding the slide button 37 to the on (ON) side, and the light emitting diode 32 is in the light emission stopped state by sliding the slide button 37 to the off (OFF) side. become.

  For example, although not shown, the pen body 31 has a structure in which the rear end portion of the pen body 31 is screwed so that the rear end portion can be removed. The battery 33 can be replaced by removing the rear end portion. In FIG. 2, the number of the batteries 33 is one. However, the present invention is not limited to this, and other arrangement structures such as a structure in which a plurality of batteries 33 are arranged in series may be used.

  The pen body 31 is moved along the surface of the phosphorescent sheet 4 as shown in FIG. 1 in a state where the optical pen 30 is gripped and the switch 36 is turned on to emit ultraviolet light from the tip of the optical pen 30. Thereby, the phosphorescent sheet portion corresponding to the moved locus emits light (self-emission). 5A to 5E show the light emission state of the phosphorescent sheet 4 when the optical pen 30 is moved. In the state of FIG. 5A, the pen body 31 is not applied, so that no light emission occurs in the phosphorescent sheet 4. Therefore, in FIG. 5A, the entire surface of the phosphorescent sheet 4 is displayed as a dark surface. 5B to FIG. 5D are diagrams illustrating the light emission state of the phosphorescent sheet 4 in a state where the optical pen 30 is sequentially moved along the surface of the phosphorescent sheet 4. A white line segment shown on the surface of the phosphorescent sheet 4 displayed as a dark surface is the light emitting portion 40. In FIG. 5 (e), the optical pen 30 is removed from the phosphorescent sheet 4. Even in this state, the light emitting portion 40 can be visually observed for a predetermined time.

  Therefore, as shown in FIG. 1, characters, symbols, and predetermined patterns (including pictures) can be written on the surface (notation surface) of the phosphorescent sheet 4 of the optical display device 1 with the optical pen 30. And the character, a symbol, and a predetermined pattern (including a picture) can be displayed on the surface (display surface) of the phosphorescent sheet 4 for a predetermined time. Therefore, the surface of the phosphorescent sheet 4 becomes a display surface as well as a display surface.

Example 1 has the following effects.
(1) Desired characters, symbols, patterns, and the like can be drawn while moving the optical pen 30 along the surface of the phosphorescent sheet 4 of the optical display device 1 with ultraviolet light emitted from the tip of the optical pen 30. . Since the phosphorescent sheet portion that has received the ultraviolet light is excited to self-emit, the phosphorescent sheet 4 of the optical display device 1 can display the characters, symbols, patterns, and the like for a predetermined time.

  (2) Since the phosphorescent sheet 4 is formed on the white reflective layer 3 formed on the first surface 2a of the support plate 2, a part of the light generated by the phosphorescent sheet 4 is directly emitted into the atmosphere. Then, since the light traveling toward the reflective layer 3 is reflected by the reflective layer 3, passes through the phosphorescent sheet 4, and is emitted into the atmosphere, the displayed characters and the like become clear.

  (3) The amount of light of characters and the like displayed on the phosphorescent sheet 4 of the optical display device 1 decreases with time. Therefore, if the optical pen 30 is overlapped and written on the phosphorescent sheet 4, characters and the like written later can be displayed with a stronger light intensity than the previously drawn characters and the like. Due to the difference in the amount of light due to the difference in time difference, there is an advantage that various displays can be performed.

  (4) If the phosphorescent sheet 4 is covered with the cover 10 for a predetermined time after the notation on the phosphorescent sheet 4, the phosphorescent sheet surface is in a state of no display, so that the optical pen 30 can be represented again. .

  (5) The light emission and light emission stop of the light emitting diode 32 can be controlled by the on / off operation of the switch 36 of the optical pen 30.

  6 to 8 are diagrams related to an optical pen that is Embodiment 2 of the present invention. FIG. 6 is a schematic cross-sectional view of the optical pen, FIG. 7 is a schematic diagram showing an ultraviolet light emission state and an ultraviolet light emission stop state by an on / off operation of the optical pen, and FIG. 8 is a schematic diagram showing a specific example of the optical pen. is there.

  The second embodiment has a structure that does not emit ultraviolet light when the optical pen 30 is not used. Irradiation of UV light directly onto the pupil may cause inflammation of the cornea or prolonged cataracts if caused by prolonged exposure. For this reason, the optical pen 30 according to the second embodiment is configured such that the light emitting diode 32 does not emit light unless the tip of the optical pen 30 is strongly pressed against the surface of the phosphorescent sheet 4.

  As shown in FIGS. 6 and 7A and 7B, the optical pen 30 according to the second embodiment has a structure in which the switch 44 of the optical pen 30 has a movable button that elastically turns on and off. ing. More specifically, as shown in FIGS. 7A and 7B, the light emitting diode 32 is elastically supported by the spring 45 with respect to the pen body 31, and the axial direction of the pen body 31 is not shown. The structure is slidable.

  Accordingly, in the state of FIG. 7A in which no external force is applied to the light emitting diode 32, the movable contact 47 is not in contact with the fixed contact 46 of the switch 44, and the light emitting diode 32 does not emit ultraviolet light. In the state of FIG. 7B in which an external force 48 is applied to the light emitting diode 32, the spring 45 is bent and the light emitting diode 32 moves (slides) inside the pen body 31. As a result, the movable contact 47 comes into contact with the fixed contact 46 of the switch 44, and the light emitting diode 32 emits ultraviolet light 49. The external force 48 is generated by gripping the pen body 31 and pressing the light emitting diode 32 against the surface of the phosphorescent sheet 4.

  FIGS. 8A and 8B are schematic views showing a specific structure of the optical pen 30 of the second embodiment. The switch 44 becomes the tablet body 50, and has a structure in which the outer end 47a of the movable contact 47 protrudes on one surface. The front end surface of the outer end portion 47 a is in contact with the light emitting diode 32.

  When the light emitting diode 32 slides inward of the pen body 31, the movable contact 47 sinks elastically in the tablet body 50 as shown in FIG. The outer end portion 47a is supported by a spring 45 (not shown) inside the tablet body 50. When the movable contact 47 elastically sinks into the tablet body 50, the switch 44 is turned on, and ultraviolet light 49 is emitted from the light emitting diode 32. 8A and 8B, the switch 44 is disposed in the middle of the wiring 34.

  The optical pen 30 according to the second embodiment is configured such that the light emitting diode 32 emits light only when the light emitting diode 32 is pushed into the pen body 31. Therefore, when writing on the optical display device 1, the tip of the light emitting diode 32 is pressed against the phosphorescent sheet 4, and the light emitting diode 32 is pushed into the pen body 31 so that the light emitting diode 32 emits light. As a result, it is possible to prevent the occurrence of an accident in which the notifier handling the optical pen 30 emits ultraviolet light toward another person's eyes or toward his / her eyes (pupil).

  FIG. 9 is a perspective view showing an optical display device that is Embodiment 3 of the present invention, and FIG. 10 is a sectional view showing a part of the optical display device of Embodiment 3.

  In the optical display device 1 according to the third embodiment, in the optical display device 1 according to the first embodiment, an elastic light shielding layer 55 is provided on the entire periphery of the surface of the cover 10 that overlaps the support plate 2. . When the cover 10 is closed, the phosphorescent sheet 4 is shielded by the cover 10 and the light shielding layer 55 so that external light does not reach as shown in FIG.

  Thus, in the optical display device 1 of Example 3, the light shielding layer 55 is provided on the inner surface side of the cover 10, and the surface of the phosphorescent sheet 4 is completely shielded during the closing operation of the cover 10. The later phosphorescent sheet surface has no self-emission part and can be newly written with the optical pen 30.

  11 to 13 are diagrams related to an optical display device and an optical pen which are Embodiment 4 of the present invention. FIG. 11 is a perspective view showing a case storage type optical display device and an optical pen, and FIG. 12 is a sectional view of the optical display device.

  The optical display device 1 of Example 4 includes a support plate 2 having a flat plate structure, and a phosphorescent sheet 4 that is bonded to the first surface 2a of the support plate 2 and kneaded with a phosphorescent material that emits light by receiving ultraviolet light. , And a case 60 formed of a light-shielding material that accommodates the support plate 2. The case 60 has a thin box structure with one end opening 61, and the support plate 2 can be accommodated in the box-shaped case 60 through the opening 61. Since the case 60 is formed of a light-shielding material, light outside the case 60 does not reach the phosphorescent sheet 4 in the support plate 2 accommodated in the case 60.

  Therefore, by storing in the support plate 2 case 60 for a predetermined time, the surface of the phosphorescent sheet 4 after a predetermined time does not have a self-light emitting portion, and a new notation with the optical pen 30 is possible. In order to facilitate removal of the support plate 2 accommodated in the case 60, a notch 62 is provided in the opening 61 of the case 60 so that part of the support plate 2 is exposed from the case 60. (See FIG. 12).

FIG. 13 is a schematic diagram illustrating a usage example of the optical display device 1 according to the fourth embodiment. For example, as shown in FIG. 13A, the nurse 65 holds the case 60 containing the support plate 2 in one hand, circulates in the hospital with the optical pen 30 in the other hand, and informs the patient of the temperature measurement. At this time, the support plate 2 is taken out from the case 60, and the name (XX) of the patient and the temperature notification letter are written on the phosphorescent sheet 4 of the support plate 2 using the optical pen 30 as shown in FIG. By showing the indicated support plate 2 so as to be visible to the patient, it is possible to notify the other patients in the same room in a quiet situation without speaking.
The optical display device 1 according to the fourth embodiment can also be used when music is sounding or there are many people and voice communication is not possible.

  FIG. 14 is a front view of a placard type optical display device that is Embodiment 5 of the present invention. The optical display device 1 of Example 5 includes a support plate 2 and a phosphorescent sheet 4 that is attached to the first surface of the support plate 2 and kneaded with a phosphorescent material that emits light by receiving ultraviolet light. This is a placard type optical display device 1 in which a support 67 is provided with a handle 67. Although not shown, a white reflective layer is provided on the first surface of the support plate 2, and the phosphorescent sheet 4 is provided on the reflective layer, as in the first embodiment.

  Since the optical display device 1 of Example 5 is a placard type optical display device, it is displayed to many people gathered by raising the phosphorescent sheet 4 (support plate 2) with the handle 67 high. Can show. For example, it is suitable for use in amusement entertainment room where the room is dim.

  15 to 17 are diagrams relating to a transmission type optical display apparatus which is Embodiment 6 of the present invention. 15 is a front view of a transmissive optical display device, FIG. 16 is a schematic cross-sectional view showing a notation state of the transmissive optical display device with an optical pen, and FIG. 17 is a notation surface (writing surface) of the transmissive optical display device. It is a perspective view which shows the arrow which showed, and the arrow which appeared on the display surface (surface to show).

  The optical display device 1 of Example 6 includes a support plate 70 made of a frame, and a phosphorescent sheet 4 in which a peripheral edge is attached to the support plate 70 and a phosphorescent material that emits light by receiving ultraviolet light is kneaded. It has become. In addition, a handle 67 is attached to the support plate 70 to form a placard type. The handle 67 has a structure that does not extend into the frame.

In the optical display device 1 of Example 6, since the support plate 70 is a frame body, as shown in FIG. 16, when the optical pen 30 is written on one surface (the writing surface) of the phosphorescent sheet 4 portion in the frame. The written characters and the like can be seen from the back side surface (surface to be shown) of the phosphorescent sheet 4. 17A is a diagram showing an arrow whose left end is an arrow written on one surface (writing surface) of the phosphorescent sheet 4 by the optical pen 30, and FIG. 17B is another surface (surface to be shown) of the phosphorescent sheet 4. It is a figure which shows the arrow by which the right end displayed on () becomes an arrow. The writing surface and the surface to be shown in the phosphorescent sheet 4 are not specified, and the surface of the phosphorescent sheet 4 represented by the optical pen 30 is the writing surface.
In the optical display device 1 of Example 6, there is the convenience that it is not necessary to turn over the phosphorescent sheet 4 after displaying it on the phosphorescent sheet 4.

  Although the invention made by the present inventor has been specifically described based on the embodiment, the present invention is not limited to the embodiment described above, and various modifications can be made without departing from the scope of the invention. Nor. In the embodiment, an example in which a light-emitting diode that emits ultraviolet light is incorporated as an optical pen has been described. However, an optical pen that incorporates a light-emitting diode that emits blue light can be used in the same manner, and has the same effects as the embodiment. That is, the phosphorescent sheet according to the embodiment accumulates light having a wavelength of around 380 nm to 480 nm, and the portion that receives the light emits light.

It is a typical perspective view which shows the optical display apparatus and optical pen which are Example 1 of this invention. It is typical sectional drawing of the said optical pen. It is a perspective view which shows a part of said optical display apparatus. It is sectional drawing which shows a part of said optical display apparatus. It is a perspective view which shows the state which draws a line using the optical pen for the said optical display apparatus. It is typical sectional drawing of the optical pen which is Example 2 of this invention. It is a schematic diagram which shows the ultraviolet light emission state by the on / off operation | movement of the optical pen shown in FIG. 6, and a ultraviolet light emission stop state. It is a schematic diagram which shows the specific example of the optical pen shown in FIG. It is a perspective view which shows the optical display apparatus which is Example 3 of this invention. 6 is a cross-sectional view showing a part of the optical display device of Example 3. FIG. It is a perspective view which shows the case storage type optical display apparatus and optical pen which are Example 4 of this invention. 6 is a cross-sectional view of an optical display device according to Example 4. FIG. FIG. 10 is a schematic diagram illustrating a usage example of the optical display device according to the fourth embodiment. It is a front view of the placard type | mold optical display apparatus which is Example 5 of this invention. It is a front view of the transmissive | pervious optical display apparatus which is Example 6 of this invention. FIG. 10 is a schematic cross-sectional view showing a notation state with an optical pen of a transmissive light display device of Example 6. It is a perspective view which shows the arrow described on the description surface of the transmissive optical display apparatus of Example 6, and the arrow which appeared on the display surface.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Optical display apparatus, 2 ... Support plate, 2a ... 1st surface, 3 ... Reflection layer, 4 ... Luminescent sheet, 5 ... Curve, 10 ... Cover, 11 ... Hinge, 30 ... Optical pen, 31 ... Pen main body, 32 ... light emitting diode, 33 ... battery, 34,35 ... wiring, 36 ... switch, 37 ... slide button, 40 ... light emitting part, 44 ... switch, 45 ... spring, 46 ... fixed contact, 47 ... movable contact, 47a ... outside End part 48 ... external force 49 ... ultraviolet light 50 ... tablet body 55 ... light shielding layer 60 ... case 61 ... opening 62 ... notch part 65 ... nurse 70 ... support plate

Claims (13)

An optical display device comprising: a support plate; and a phosphorescent sheet that is bonded to the first surface of the support plate and kneaded with a phosphorescent material that emits light by receiving ultraviolet light. The optical display device according to claim 1, wherein a white reflective layer is provided on the first surface of the support plate, and the phosphorescent sheet is formed on the reflective layer. The optical display device according to claim 1, wherein the first surface of the support plate is a flat surface. A support plate having a flat first surface;
A phosphorescent sheet that is affixed to the first surface of the support plate and kneaded with a phosphorescent material that emits light by receiving ultraviolet light; and
An optical display device comprising: a light-shielding cover that is attached to one side of the support plate so as to be freely opened and closed and covers the phosphorescent sheet during a closing operation. An elastic light-shielding layer is provided on the entire periphery of the surface of the cover that overlaps the support plate. When the cover is closed, the phosphorescent sheet receives external light by the cover and the light-shielding layer. The optical display device according to claim 4, wherein the optical display device is configured to be shielded from light. The optical display device according to claim 4, wherein a white reflective layer is provided on the first surface of the support plate, and the phosphorescent sheet is formed on the reflective layer. A flat plate support plate;
A phosphorescent sheet that is affixed to the first surface of the support plate and kneaded with a phosphorescent material that emits light by receiving ultraviolet light; and
A case formed of a light-shielding material that accommodates the support plate;
An optical display device, wherein the phosphorescent sheet is shielded by the case when the support plate is housed in the case. The optical display device according to claim 7, wherein a white reflective layer is provided on the first surface of the support plate, and the phosphorescent sheet is formed on the reflective layer. A support plate;
A phosphorescent sheet that is affixed to the first surface of the support plate and kneaded with a phosphorescent material that emits light by receiving ultraviolet light;
An optical display device, wherein the support plate is provided with a handle. The optical display device according to claim 9, wherein a white reflective layer is provided on the first surface of the support plate, and the phosphorescent sheet is formed on the reflective layer. A support plate made of a frame,
An optical display device comprising: a phosphorescent sheet having a peripheral edge attached to the support plate and kneaded with a phosphorescent material that emits light upon receiving ultraviolet light. A cylindrical pen body,
A light emitting diode that is built in the tip side of the pen body and emits ultraviolet light from the tip of the pen body to the outside;
A battery built in the pen body and applying a predetermined voltage to the light emitting diode;
A plurality of wirings connecting the battery and the light emitting diode;
An optical pen connected to the wiring and having a switch for controlling light emission and light emission stop of the light emitting diode. The switch has a movable button that elastically turns on and off, and the switch supports the light emitting diode through the movable button in the pen body, and pushes the light emitting diode into the pen body. The optical pen according to claim 12, wherein the light emitting diode emits light only when the light is emitted.

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