WO2013177782A1 - Glass writing board suitable for projection - Google Patents

Abstract

Disclosed is a glass writing board suitable for projection, composed of a ground glass, a fluorescent layer, a primer layer and a magnetically adsorbable plate. A rough surface of the ground glass faces outwards and a smooth surface thereof is laminated on the fluorescent layer, the back surface of the fluorescent layer is in turn laminated on the primer layer, and the back surface of the primer layer is laminated on the magnetically adsorbable plate.

Description

A glass writing board suitable for projection Technical field

The invention belongs to the technical field of glass writing boards, in particular to a glass writing board suitable for projection.

Background technique

Existing glass writing boards have only a writing function and do not have a projection function.

Projection screens are tools used to display images and video files in teaching, film, office, home theater, and large-scale conferences. The projection screen is one of the most important products in the peripheral equipment of the projector. If the projection screen is properly matched with the projector, you can get a high-quality projection effect.

However, careful analysis of the existing projection screen is not difficult to find that it has the following shortcomings:

1. The existing projection screen cannot be marked or written directly with a writing instrument such as a whiteboard pen;

Second, the existing projection screen, the surface of the use of granular pearl powder as a tool for absorbing and reflecting light, over time, the pearl powder on the surface of the curtain will gradually fall off, so the image projected onto the screen will gradually blur; The rough surface of the curtain will also absorb dust and other micro-particles in the environment. For a long time, dust is easily accumulated on the screen, which affects the appearance and damages the projection effect;

3. In the idle state, the projection screen has almost no other practical or decorative functions, and it is impossible to absorb message strips or other materials by means of magnets or the like;

Fourth, the existing commercially available projection screens, when working indoors in natural light or indoors using normal lighting, the received images appear dim and blurred.

In view of this, the inventors have specially developed a glass writing board suitable for projection, and the present invention has been produced.

Summary of the invention

The object of the present invention is to provide a glass writing board suitable for projection, which can greatly improve the imaging effect, and can directly write dry erase on the board surface by using a whiteboard pen, and at the same time, it is better in the idle state. The decorative effect can also use magnetic materials to absorb message strips and other small objects (such as keys, whiteboard pens, erasers, etc.) on the board surface.

In order to achieve the above object, the technical solution of the present invention is:

The utility model relates to a glass writing board suitable for projection, which comprises a frosted glass, a fluorescent layer, a primer layer and a magnetic adsorbing plate. The rough surface of the frosted glass faces outward and the smooth surface is combined with the fluorescent layer, and the back surface of the fluorescent layer is combined with the primer layer. The back side of the primer layer is attached to a magnetically absorbing plate.

The frosted glass is processed in two steps: firstly, a strong acid etching method is used to form a plurality of small hexagonal crystal particles having a length, a width and a height of less than 10 nm, respectively, thereby destroying the reflection of the original glass surface. Structure; then use the acid etching method to smooth the sharp part of the above-mentioned hexagonal body, so that the surface of the frosted glass is neither reflective, and the dry erase can be written with a whiteboard pen, leaving no trace after erasing.

The frosted glass has a thickness of 3-16 mm.

The glass writing board has two colors of silver gray and silver white; the fluorescent layer of the silver gray glass writing board is prepared by mixing and mixing 80.4% varnish, 10.7% silver powder and 8.9% auxiliary agent by weight; fluorescence of silver white glass writing board The layer was prepared by mixing and mixing 80.4% varnish, 10.7% phosphor and 8.9% auxiliary by weight.

The fluorescent layer and the primer layer are formed by spraying, rolling or showering, and then baking.

The phosphor layer has a thickness of 8-10 microns.

The primer layer has a thickness of 4-6 microns.

The magnetically absorbing plate is a galvanized plate or other steel plate, iron plate or iron tape.

The magnetically absorbing plate has a thickness of 0.3 to 0.8 mm.

After adopting the above scheme, the present invention has the following advantages compared with the prior art:

1. The invention has a fluorescent layer and can be used to display images and video files, like the existing projection screen, to realize projection effect, and the imaging effect is far superior to the existing commercially available projection screen;

Second, the surface of the invention is a hard frosted glass, which can be used as a projection screen or dry erase, as a general whiteboard;

3. The back of the projection board of the present invention is a magnetically absorbing plate (such as galvanized sheet, steel, iron plate or iron tape), and can be used to adsorb message strips, other paper materials or small objects (such as keys, whiteboard pens) through magnets. , whiteboard wipe, etc.);

4. The surface of the invention is a hard frosted glass, which is not easy to absorb dust or other fine particles in the environment, and at the same time, the invention has a certain decorative effect due to the crystal clearness of the glass itself.

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

DRAWINGS

Figure 1 is a schematic view of the structure of the present invention.

detailed description

As shown in FIG. 1, the present invention discloses a glass writing board suitable for projection, which is composed of frosted glass 1, fluorescent layer 2, primer layer 3 and magnetically absorbing plate 4.

The rough surface of frosted glass 1 can achieve a writing function. Frosted glass 1 is processed in two steps: firstly, the surface of the glass is formed into numerous fine hexagonal crystal particles with length, width and height less than 10 nm, respectively, by strong acid etching, thereby destroying the reflective structure of the original glass surface. Then, the sharp part of the above-mentioned hexagonal body is smoothed by acid etching, so that the surface of the frosted glass is neither reflective, and the dry erase can be written with a whiteboard pen, leaving no trace after erasing. The thickness of the frosted glass 1 is preferably from 3 to 16 mm. The rough side of frosted glass 1 faces outward.

The fluorescent layer 2 is laminated on the smooth surface of the frosted glass 1. The fluorescent layer 2 can realize a projection function. The fluorescent layer 2 can be made of various existing fluorescent materials, or can be given a specific formula according to the color of the glass writing board, such as a glass writing board having two colors of silver gray and silver white; the fluorescent layer 2 of the silver gray glass writing board by weight The percentage is made by thoroughly stirring and mixing 80.4% varnish, 10.7% silver powder and 8.9% auxiliaries; the fluorescent layer 2 of the silver-white glass writing board is fully stirred and mixed by 80.4% varnish, 10.7% phosphor and 8.9% auxiliaries by weight. to make. The forming method of the fluorescent layer 2 is first spraying, rolling or showering, and then baking, and specifically, baking can be performed twice in succession. The thickness of the fluorescent layer 2 is preferably 8 to 10 μm. The fluorescent layer 2 provides excellent image sharpness, excellent contrast, high color realism and good writing resolution.

The primer layer 3 is further laminated on the back side of the phosphor layer 2. The primer layer 3 can ensure both the projection effect of the fluorescent layer 2 and the fluorescent layer 2. The forming method of the primer layer 3 is first spraying, rolling or showering, and then baking, and specifically, baking can be performed twice in succession. The thickness of the primer layer 3 is preferably 4-6 microns.

The magnetic adsorbing plate 4 is attached to the back surface of the primer layer 3. The magnetic adsorption plate 4 may be a galvanized plate or other steel plate, iron plate, iron tape, or various materials for magnet adsorption and fixation, so that temporary data (such as reports, lists, pictures, etc.) are fixed when the small magnet block is adsorbed. Such as a magnet plate. The thickness of the magnetic adsorbing plate 4 is preferably 0.3 to 0.8 mm.

When the invention is used, the light projection of the projector is irradiated onto the fluorescent layer 2 through the frosted glass 1, and the fluorescent light is transmitted through the frosted glass 1 to cause diffuse reflection on the rough surface thereof, and enters the eyes of the viewer to form an image. A part of the light penetrates the transparent frosted glass 1, and is irradiated to the fluorescent layer 2, and the fluorescent layer 2 emits light to make the projection plate brighter.

During use, the rough surface of the frosted glass 1 can be marked, written, and painted, and when temporary lightweight materials are temporarily attached, the temporary magnets can be fixed with a small magnet block and a magnetic adsorption plate 4. .

The above-mentioned embodiments and the drawings are not intended to limit the scope of the invention, and any suitable variations or modifications of the invention will be apparent to those skilled in the art.

Claims (10)

1. A glass writing board suitable for projection, which is characterized in that: a frosted glass, a fluorescent layer, a primer layer and a magnetically attractable plate, the rough surface of the frosted glass faces outward and the smooth surface is combined with the fluorescent layer, and the back side of the fluorescent layer is further Composite with the primer layer, the back side of the primer layer is attached to the magnetically absorbing plate.

2. A glass writing board suitable for projection according to claim 1, wherein the frosted glass is processed in two steps: firstly, the surface of the glass is formed to have a length, a width and a height of less than 10 nm by strong acid etching. Numerous small hexagonal crystal particles; the sharp portion of the above hexagonal prism is smoothed by acid etching.

3. A glass writing board suitable for projection according to claim 1, wherein the thickness of the frosted glass is 3-16 mm.

4. A glass writing board suitable for projection according to claim 1, wherein the glass writing board is silver gray, and the fluorescent layer is thoroughly stirred and mixed by 80.4% varnish, 10.7% silver powder and 8.9% auxiliary agent by weight. production.

A glass writing board suitable for projection according to claim 1, wherein the glass writing board is silver-white, and the fluorescent layer is sufficiently stirred by 80.4% varnish, 10.7% phosphor and 8.9% auxiliary agent by weight. Made by mixing.

6. A glass writing board suitable for projection according to claim 1, wherein the fluorescent layer and the primer layer are formed by spraying, rolling or showering, and then baking.

7. A projection-fitted glass writing tablet according to claim 1 wherein the phosphor layer has a thickness of from 8 to 10 microns.

8. A projection-fitted glass writing tablet according to claim 1 wherein the primer layer has a thickness of 4-6 microns.

9. A glass writing board suitable for projection according to claim 1, wherein the magnetically attractable plate is a galvanized plate or a steel plate, an iron plate or an iron tape.

10. A glass writing board suitable for projection according to claim 1, wherein the magnetically attractable plate has a thickness of 0.3 to 0.8 mm.

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