JP2007096792A - Whiteboard - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a whiteboard capable of easily displaying image data of a content previously prepared by a lecturer etc. under bright environment, capable of additional drawing by hand writing means according to needs for the image data, and capable of capturing the additionally drawn data into the previously prepared image data. <P>SOLUTION: In the whiteboard 1 composed of a large-sized reflecting display medium 10, a transparent plate member 20 is provided in front of the large-sized reflecting display medium 10, and additional drawing data 22 can be drawn on the transparent plate member by a marker 30. The reflecting display medium 10 having functional microcapsules internally is capable of displaying by electrophoresis. The transparent plate member 20 is made of glass or synthetic resin, while a hard coating process, a smoothing process, and/or a reflection prevention process are applied on its surface. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a whiteboard capable of easily and electronically displaying contents (image data) prepared in advance in a bright environment, and capable of writing and erasing by handwriting as necessary.

  In the past, whiteboards, blackboards, and green boards had to be drawn by human hands, and the following could not be drawn without erasing what was once drawn. As an example, in classes and lectures, teachers must write the same content on the blackboard for each class, which is a laborious task. In addition, depending on the content, there are many cases where it is necessary to rewrite many times in one lecture, and each time, it is wasted time to erase and rewrite the screen. . To solve this problem, for example, some people use projectors and OHPs (overhead projectors), but the venue becomes dark, making it difficult for listeners to take notes, which is counterproductive for learning.

  Also, what you want to supplement and emphasize in the dictation process is often handwritten each time, and the OHP in that case can be written directly on the OHP sheet, but once written, it cannot be erased. , Often get dirty even if turned off. Also, projectors usually cannot be written on the screen itself, so a whiteboard may be used as a screen, but it will stand in front of the screen to write, and what is projected with its own shadow. This projector is invisible, difficult to describe, and difficult for listeners to see. In addition, this projector has a rear projection technology that projects from the back of the screen, but the equipment is large and the description is based on an aqueous whiteboard marker. However, there was a problem that it was difficult to see due to the light from behind.

  In recent years, digital cameras have been developed, and the number of people who take pictures of whiteboards is increasing. However, in OHP and projection, the venue is dark and difficult to shoot. There was also the inconvenience of not being captured.

  On the other hand, as a white board that can easily display image data of contents prepared in advance, for example, a liquid crystal display or functional microcapsule contained in a nematic liquid crystal contains a display panel (hereinafter referred to as an electronic display) that can be displayed by electrophoresis. In the former liquid crystal display, handwriting (writing) directly on the surface with an aqueous whiteboard marker, etc., will contaminate the display surface of the display, even if it is drawn with an aqueous marker, Due to the backlight, there was a problem that it was difficult to see because it was transparent by the light of the backlight.

  Further, the latter electronic paper is a reflective display medium, and there is no problem that it is difficult to see the data written by the water-based marker, so this is a suitable technique for the white pod of the present invention. If handwritten directly on the surface with an aqueous whiteboard marker, etc., the display may be damaged or irreversibly soiled due to unpredictable movements of the human hand. It was what was required.

The present invention solves the problems of the prior art, and the problem is that the image data of the contents prepared in advance by a lecturer or the like is simply displayed in a bright environment, and the prepared data is prepared in advance. It is an object of the present invention to provide a whiteboard which can be additionally drawn by handwriting means as required for image data, and which can additionally store the additionally drawn image data in the previously prepared image data.

  In order to achieve the above object in the present invention, first, in the invention of claim 1, a white board made of a large reflective display medium, wherein a transparent plate material is provided on the front surface of the large reflective display medium. The white board is characterized in that additional drawing by handwriting means is made possible on the transparent plate material.

  According to a second aspect of the present invention, in the whiteboard according to the first aspect, the reflective display medium is a display panel having a functional microcapsule therein and capable of displaying by electrophoresis. It is what.

  The invention according to claim 3 is characterized in that the transparent plate material is made of glass or synthetic resin, and the surface thereof is subjected to a hard coat treatment, a smoothing treatment and / or an antireflection treatment as necessary. The whiteboard according to any one of claims 1 to 2.

  According to a fourth aspect of the present invention, in the whiteboard according to any one of the first to third aspects, the handwriting means is a marker containing water-based ink.

  Further, in the invention of claim 5, a marker position detection mechanism is attached to the marker which is the handwriting means, and the position detection mechanism has a dedicated circuit in the marker and has a specific wavelength or An ultrasonic irradiation unit is provided, and using the irradiation from the irradiation unit, fine dots readable at the specific wavelength provided on the surface of the reflective display medium are read by a sensor with a built-in marker, and the marker The whiteboard according to any one of claims 1 to 4, wherein the coordinates are determined.

  Since this invention is the above structure, there exist the following effects.

  That is, according to the first aspect of the present invention, a whiteboard made of a large reflective display medium is provided with a transparent plate on the front surface of the large reflective display medium, and handwriting means is provided on the transparent plate. In the bright environment, the surface of the display medium is not soiled, and since the display medium is a reflection type, the additional drawing data looks thin and the additional drawing data becomes difficult to see. There can be no whiteboard.

  According to the second aspect of the present invention, the reflective display medium is a display panel that has a functional microcapsule inside and can be displayed by electrophoresis. A white board that can be easily displayed one by one from a personal computer or the like can be obtained.

  According to the third aspect of the invention, the transparent plate is made of glass or synthetic resin, and the surface thereof is subjected to hard coat treatment, smoothing treatment and / or antireflection treatment as necessary. In addition, it is possible to obtain a white board that enhances the wear resistance on the surface of the plate material, facilitates the marker ink to drop, and prevents glare due to reflection of external light.

According to the invention of claim 4, since the handwriting means is a marker containing aqueous ink, a commercially available whiteboard marker and whiteboard eraser can be used, and additional drawing is performed. The data can be easily drawn and erased.

  Furthermore, according to the invention according to claim 5, a marker position detection mechanism is provided in association with the marker as the handwriting means, and the position detection mechanism has a dedicated circuit in the marker, and is specified. A sensor having a built-in marker for fine dots readable at the specific wavelength provided on the surface of the reflective display medium by using irradiation from the irradiation unit with light or ultrasonic wave having a wavelength A whiteboard that can be copied by storing the additional drawing data into the pre-prepared image data as needed, along with the additional drawing data by the marker, by determining the coordinates of the marker can do.

  Therefore, according to the present invention, image data having contents prepared in advance is easily displayed in a bright environment, and additional drawing by handwriting means can be performed on the image data as necessary, and the additionally drawn image data is prepared in advance. As a whiteboard that can be captured and stored in image data, it has excellent practical effects.

  The best mode for carrying out the present invention will be described below in detail with reference to the drawings.

  FIG. 1 is an explanatory diagram showing an example of a whiteboard of the present invention, and FIGS. 2 to 4 are schematic diagrams illustrating an example of a reflective display medium constituting the whiteboard of the present invention. Moreover, FIG. 5 is a figure explaining the surface treatment of the transparent board | plate material which comprises the white board of this invention, FIGS. 6-9 is a figure explaining replacement | exchange or protection of a transparent board | plate material, FIG. It is a schematic diagram explaining an example of the marker used for the whiteboard of this invention.

  The invention of claim 1 is, for example, a white board (1) made of a large reflective display medium (10) as shown in the front view of FIG. 1 (a) and the side sectional view of FIG. 1 (b). Then, a transparent plate (20) is provided on the front surface of the large reflective display medium (10), and image data (12 previously displayed on the reflective display medium (10) is provided on the surface of the transparent plate (20). )) A whiteboard (1) that enables drawing of the additional data (22) by the handwritten marker (30).

  Electronic paper, which is a reflective display medium (10), is fitted into a casing (16), and a transparent plate (20) on the front surface thereof is fitted into a frame (24) that also serves as a support. Further, a pen tray (25) is attached to a portion corresponding to the lower portion of the frame portion (24).

  In the invention of claim 2, for example, the reflective display medium (10) shown in FIGS. 1 (a) and 1 (b) has a functional microcapsule inside and can be displayed by electrophoresis. A display medium called a so-called electronic paper.

As a representative example of the electronic paper which is the reflective display medium (10), for example, as shown in a schematic diagram showing a side cross section of FIG. 2, an electrode layer (51a) is provided on a printed board (50), An image display layer (54) in which microcapsules (110) having functionality are arranged as a single layer via an adhesive layer (55) is formed on the electrode layer (51a), and a transparent electrode layer ( There is a reflective display medium (10) in which a film (56) to which 51b) has been applied is adhered by an adhesive layer (55). As an example of the functional microcapsule (110), for example, as shown in the schematic diagram of FIG. 3, gum arabic or the like is used as a capsule shell (111), and white particles (113) made of titanium oxide and carbon are contained inside. Black particles (114) made of black are dispersed and enclosed in a highly viscous dispersion medium (112) such as silicone oil. The white particles (113), titanium oxide, are positively charged, while the black particles (114), carbon black, are negatively charged.

  Therefore, as shown in the schematic diagram of FIG. 4, an electric field is applied to the transparent electrode layer (51b) and the electrode layer (51a), so that the transparent electrode layer (51b) becomes a negative electrode and the electrode layer (51a) becomes a positive electrode. In this case, positively charged white particles (113) are drawn to the transparent electrode layer (51b) side, and black particles (114) are drawn to the electrode layer (51a) side. When observed from above, the part appears white. On the contrary, when the transparent electrode layer (51b) is a positive electrode and the electrode layer (51a) is a negative electrode, the above-described black and white are reversed.

  As described above, the reflective display medium (10) has a functional microcapsule (110) inside, and is a display panel capable of displaying by electrophoresis, whereby FIG. 1 (a) and FIG. 1 (b). ), The image data (12) of the content “Aya” prepared in advance can be easily displayed one by one from the personal computer (18) via the control unit (15).

  And since this display panel is a reflection type, the additional data (22) additionally drawn on the transparent plate (20) looks thin with a backlight like a liquid crystal display, for example, and the additional drawn additional data (22) is difficult to see. It can be set as the white board (1) without the problem of becoming.

  In the invention of claim 3, for example, as shown in FIGS. 1 (a) and 1 (b), the transparent plate (20) on the front surface of the reflective display medium (10) is made of glass or synthetic resin. Thus, a white board (1) in which a hard coat treatment, a smoothing treatment and / or an antireflection treatment is applied to the surface side of the transparent plate (20) as necessary.

  As the synthetic resin constituting the transparent plate material (20), acrylic resin, polycarbonate resin and the like can be cited as suitable for making a hard plate shape, and the thickness varies depending on the size. What is necessary is just about 2 mm-4 mm from points, such as intensity | strength and cost.

In the case of a glass plate as the transparent plate material (20), it is not necessary to carry out a hard coat treatment that increases wear resistance or a smoothing treatment that makes it easy to remove the marker ink, but prevents glare caused by reflection of external light. It is preferable to perform an antireflection treatment (also referred to as an antiglare treatment). For example, a method of forming an ultrathin film such as MgF ₂ or SiO ₂ having a film thickness of about 0.1 μm or a metal vapor deposition film on the surface There is.

  In the case of a synthetic resin made of acrylic or the like as the transparent plate (20), for example, as shown in the side sectional view of FIG. 5, a high refractive index layer (70) and a low refractive index are formed on the surface of the transparent plate (20). Since the refractive index layer (72) is laminated in order, the outermost refractive index layer (72) needs to have both a hard coat layer that increases wear resistance and a smoothness that makes it easy to remove the marker ink. As the binder resin used for the low refractive index layer (72), for example, a reactive curable resin, that is, a thermosetting resin and / or an ionizing radiation curable resin is preferably used.

  Examples of the thermosetting resin include phenol resin, urea resin, diallyl phthalate resin, melamine resin, unsaturated polyester resin, polyurethane resin, epoxy resin, and the like. If necessary, a crosslinking agent, a polymerization initiator, etc. A curing agent, a polymerization accelerator, a solvent, etc. are added and used.

The ionizing radiation curable resin preferably has an acrylate functional group, for example, an oligomer such as a relatively low molecular weight polyester resin, polyether resin, acrylic resin, epoxy resin, urethane resin, alkyd resin, etc. Or prepolymers and monofunctional monomers such as ethyl (meth) acrylate, ethylhexyl (meth) acrylate, styrene, methylstyrene as reactive diluents and polyfunctional monomers such as trimethylpropatri (meth) acrylate, tripropylene glycol ( Those containing a relatively large amount of (meth) acrylate and the like are preferably used.

  Further, in order to make the ionizing radiation curable resin into an ultraviolet curable resin composition, acetophenones as photopolymerization initiators, benzophenones and tri-n-butylphosphine, n-butylamine as photosensitizers, Triethylamine or the like can be mixed and used.

Moreover, as a high refractive index layer (70), there exists a thing comprised by the high refractive index ultrafine particle being mutually bound with binder resin, for example. In the high refractive index layer (70), the ratio of the high refractive index ultrafine particles to the binder resin is preferably about 1 to 10 for the high refractive index ultrafine particles with respect to the binder resin 1. , for _{example, ZnO, TiO 2, CeO 2} , La 2 O 3, Al 2 O 3, ZnO 2 and the like.

  In addition, as the binder resin for the high refractive index ultrafine particles, a known thermoplastic resin, thermosetting resin, ionizing radiation curable resin is used in consideration of hardness, adhesion, and dispersibility of the high refractive index ultrafine particles. In particular, when the bending hardness is required, it is preferable to use the reaction curable resin used for the low refractive index layer (72), that is, the thermosetting resin and / or the ionizing radiation curable resin.

  Using the resin composition as described above, it is applied to the surface of the transparent plate (20) by roll coating or die coating, and in the case of a thermosetting resin, in the case of an ionizing radiation curable resin by heating in an oven or the like. The low refractive index layer (72) and the high refractive index layer (70) can be formed by being cured by irradiation with an electron beam or an ultraviolet ray, and the low refractive index layer (72) and the high refractive index layer (70). Thus, a white board having abrasion resistance, ink erasability, and antireflection (antiglare) can be obtained.

As described above, the low refractive index layer (72) is used instead of an ultrathin film such as MgF ₂ or SiO ₂ having a film thickness of about 0.1 μm, which is formed on the surface of the glass plate and prevents reflection of external light, or a metal vapor deposited thin film. ) And a high refractive index layer (70) are formed on a glass plate, and in addition to abrasion resistance and ink erasability, a white board having antireflection properties (antiglare properties) can also be obtained. .

  In the invention according to claim 4, for example, as shown in FIG. 1 (b), the handwriting means is a handwritten marker (30) containing water-based ink of alcohols or ketones, and a commercially available white The board marker can be used, and the additional writing data (22) that has become unnecessary can be wiped (erased) with a whiteboard eraser (not shown).

  In the whiteboard (1) as described above, when the transparent plate (20) is severely damaged or dirty, the transparent plate (20) can be replaced. For example, as shown in the perspective views of FIGS. 6 and 7, the transparent plate (20) is fixed by the frame (24), and the transparent plate (20) is removed from the frame (24) by loosening it. It can be removed, and can be detached from the front as shown in FIG. 6, or can be detached from the side as shown in FIG.

Further, the additional drawing may be performed directly on the transparent plate (20), but an exchangeable transparent film may be provided on the surface of the transparent plate (20) and written on the transparent plate (20). It is assumed that the surface treatment (treatment for improving wear resistance, smoothness and / or antireflection properties) is applied as described above, and is attached to the transparent plate (20) via, for example, an adhesive or a fine adhesive. You may just mount on the front surface. For example, the transparent film for replacement may be a sheet-like transparent film (26) as shown in FIG. 8, or the used portion is wound with a roll-like transparent film (28) as shown in FIG. It can also be used to unwind a new film. Polyethylene terephthalate, polypropylene, polyethylene or the like can be used as a base material for these transparent films (26, 28).

  On the surface of the electronic paper which is the reflective display medium (10), additional drawing by direct handwriting cannot be performed, but by sending the additional data (22) to the control unit (15) of the electronic paper, Data can be displayed electrically. The electronic paper control unit (15) is connected to the personal computer (18), and the data on the personal computer (18) and the data on the network are sent to the electronic paper control unit (15), so that It can be displayed on the electronic paper which is the reflective display medium (10).

  In the invention according to claim 5, if it is desired to reflect the result of the additional drawing by handwriting on the display of the image data (12) prepared in advance of the reflective display medium (10), for example, FIG. As shown in FIG. 5, it can be realized by providing a position detection mechanism for the whiteboard marker (30) in association with the whiteboard marker (30) as a handwriting means.

  This position detection mechanism includes, for example, a dedicated circuit (35) for the whiteboard marker (30), and is connected to the infrared irradiation unit (34) and a sensor (33) for capturing the infrared rays. The whiteboard markers (34) are read by the sensor (33) by using the light rays from (34) and reading the minute dots which are provided on the surface of the reflective display medium (not shown) and can be read by infrared rays. 30) coordinates can be determined. For example, with this whiteboard marker (30), additional drawing data (22) as shown in FIG. When the switch (36) of the whiteboard marker (30) shown in FIG. 10 is turned ON as necessary, the additional drawing data (22) is reversed. White board (1) that can be captured in image data (12) of electronic paper, which is a mold display medium (10), can store additional drawing data (22), and can also be copied It can also be.

  By using the whiteboard as described above, for example, it is possible to add an explanation by hand to an image data surface prepared in advance and provide an easy-to-understand explanation. The explanation is given anti-reflective properties, so it can be viewed from any angle, and is effective for classes and presentations. For example, image data that can be displayed for five whiteboards in a high school class is prepared in advance. Lectures are displayed on electronic paper one by one from a personal computer. If there is something you want to emphasize on the way, use a whiteboard marker to write it on the image data displayed on the electronic paper. When switching the display to the next page, it is only necessary to erase what has been handwritten earlier, and the next display becomes effective within a few seconds, saving time. In the meantime, the classroom remains bright, and there is no problem in taking notes, and it can be a white board that can prevent snoozing.

An example of the whiteboard of the present invention will be described, wherein (a) is a front view thereof, and (b) is a side sectional view (partly front view) thereof. It is a sectional side view showing typically an example of a reflective display medium which constitutes a white board of the present invention. It is explanatory drawing which represented typically an example of the functional microcapsule of the reflection type display medium which comprises the white board of this invention. It is the sectional side view which represented typically the example of the image display of the reflection type display medium which comprises the white board of this invention. It is a sectional side view explaining one example of the surface treatment of the transparent board | plate material which comprises the white board of this invention. It is a perspective view explaining an example of the exchange method of the transparent board material which comprises the white board of this invention. It is a perspective view explaining the other example of the replacement | exchange method of the transparent board | plate material which comprises the white board of this invention. It is a front view explaining an example of the protection method of the transparent board material which comprises the white board of this invention. It is explanatory drawing which represented typically the other example of the protection method of the transparent board | plate material which comprises the white board of this invention. It is a sectional side view explaining an example of a marker for performing additional drawing on the whiteboard of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... White board 10 ... Reflective type display medium 12 ... Image data prepared in advance 15 ... Control part 16 ... Case 18 ... PC 20 ... Transparent plate material 22 ... Writing data 24 ... Frame part 25 ... Pen tray 26 ... Sheet-like exchange film 28 ... Roll-like exchange film 30 ... Marker 32 ... Pen tip 33 ... Sensor 34 ... Infrared irradiation part 35 ... Circuit part 36 ... Switch 50 ··· Printed circuit board 51a ··· Electrode layer 51b ··· Transparent electrode layer 54 ··· Image display layer 55 · · · Adhesive layer 56 · · · Film 70 · · · High refractive index layer 72 · · · Low refractive index layer 110 · · · Functionality Microcapsule 111 ··· Capsule shell 113 · · · White particles 114 · · · Black particles

Claims (5)

  A whiteboard comprising a large reflective display medium, wherein a transparent plate is provided on the front surface of the large reflective display medium, and additional drawing by handwriting means is enabled on the transparent plate board.   The whiteboard according to claim 1, wherein the reflective display medium is a display panel having functional microcapsules therein and capable of displaying by electrophoresis.   The said transparent board | plate material consists of glass or a synthetic resin, and the hard-coat process, the smoothing process, and / or the antireflection process are performed to the surface as needed. The whiteboard according to item 1.   The whiteboard according to any one of claims 1 to 3, wherein the handwriting means is a marker containing water-based ink.   Along with the marker which is the handwriting means, the marker has a position detection mechanism, the position detection mechanism has a dedicated circuit in the marker, and has a light or ultrasonic irradiation unit having a specific wavelength, Using the irradiation from the irradiation unit, the minute dots that can be read at the specific wavelength provided on the surface of the reflective display medium are read by a sensor with a built-in marker, and the coordinates of the marker are determined. The whiteboard according to any one of claims 1 to 4.