Smart projection writing whiteboard

Abstract

The present invention discloses an intelligent projection writing whiteboard, comprising at least one writing panel, the plane of which constitutes the writing surface of the intelligent projection writing whiteboard; the writing panel is made of a light-transmitting material, and its back surface forms micro-granular prisms. The writing panel is an anti-glare glass panel. The micro-granular prisms are irregular in shape and are arranged and distributed in a unit or array manner. A micro-prismatic reflective film is provided on the outside of the back surface of the writing panel. The micro-prisms in the micro-prismatic reflective film are arranged and distributed in a regular and orderly manner. A white resin film is provided on the outside of the micro-prismatic reflective film. Compared with the prior art, the present application has the advantages that writing can be done with a fountain pen, chalk, etc., and does not require wiping with professional solutions, and has good wear resistance. There is no light spot when projecting the picture, so that the viewer can clearly see the picture on the whiteboard, and the light retroreflection gain effect increases the brightness of the projected picture, resulting in better effect.

Description

Technical Field

[0001] The present invention relates to the technical field of teaching aids and office whiteboards, and in particular to an intelligent projection writing whiteboard. Background Art

[0002] A whiteboard is a writing surface typically made of white board material. Similar to a blackboard, a whiteboard is a reusable writing tool. It is commonly used in classrooms, office meetings, and other settings. Currently, whiteboards are only used as reusable writing tools and require special whiteboard pens and wipes.

[0003] School classrooms also use whiteboards for teaching due to the need for projection. Typically, these projection whiteboards are enameled whiteboards, with a baked white enamel surface. Images projected onto these boards are reflected, creating bright spots and affecting the viewer's visual experience. Furthermore, markers need to be cleaned with a specialized cleaning solution after writing on enameled whiteboards. Chalk cannot write on enameled whiteboards, causing the pen to slip or break. While enameled whiteboards are more wear-resistant than those with a baked enamel finish, they do wear out. The paint lasts longer than regular whiteboards, but after a while, the surface will become blurred. These two are relative terms. Once the surface of an enameled whiteboard wears out, the image projected onto it will also become blurry. Due to the material itself, the original brightness factor will gradually decrease, and the left and right viewing angles are not wide enough. Beyond a 90-degree viewing angle, the image will become unclear due to reflections.

[0004] Thus, there is an urgent need for a whiteboard that can be projected on the same with chalk or a pen, to remedy the deficiencies in the prior art. Summary of the Invention

[0005] The object of the present invention is to provide an intelligent projection writing whiteboard, which includes at least one writing panel, the plane of which constitutes the writing surface of the whiteboard; the writing panel is made of a light-transmitting material; and the back surface of the writing panel forms micro-granular prisms.

[0006] In one preferred embodiment, the smart projection writing whiteboard includes a frame, and at least one writing panel is arranged in the frame.

[0007] In one preferred embodiment, the writing panel is an anti-glare glass panel.

[0008] In one preferred embodiment, the micro-granular prisms are irregular in shape and are arranged in a unit or array manner on the back surface of the writing panel.

[0009] In one preferred embodiment, a micro-prismatic reflective film is provided on the outer surface of the back surface of the writing panel.

[0010] In one preferred embodiment, the microprisms in the microprismatic reflective film are arranged and distributed in a regular and orderly manner.

[0011] In one preferred embodiment, the microprismatic reflective film is a resin film.

[0012] In one preferred embodiment, a white resin film is provided on the outside of the micro-prismatic reflective film.

[0013] In one preferred embodiment, the roughness of the writing surface of the anti-glare glass panel is 3 to 12 μm.

[0014] Compared with the existing technology, the intelligent projection writing whiteboard of this application has the following technical effects:

[0015] (1) The intelligent projection writing whiteboard of the present application is made of glass. The glass surface has good wear resistance and is not easily worn out after repeated writing. It is not easy to age and can be permanently written with a pen or chalk.

[0016] (2) The smart projection writing whiteboard of the present application is easy to wipe after writing. No professional potions are needed. Just use an ordinary eraser to wipe it, which saves costs and is more convenient to use.

[0017] (3) When the projection image is projected on the smart projection writing whiteboard of the present application, its surface is uniformly diffusely reflective, and no light spots are formed, so the viewer can see a clear projection image. At the same time, when the smart projection writing whiteboard of the present application is used as a writing panel, the viewer can also see the written content more clearly.

[0018] (4) The smart projection writing whiteboard of the present application utilizes the micro-particle prism and micro-prismatic reflective film on the back of the writing panel to achieve light retroreflection gain, thereby increasing the brightness of the projected image and achieving a better effect. At the same time, the angles of the incident light and the retroreflected light are increased, achieving almost blind-angle-free image reflection, allowing students sitting in the front row to clearly see the fonts and images on the smart projection writing whiteboard of the present application within a wide viewing angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0020] Figure 1 The figure is a schematic structural diagram of an intelligent projection writing whiteboard according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0021] In order to further illustrate the technical means adopted by the present invention and the effects achieved, the technical solution of the present invention is clearly and completely described below in conjunction with the accompanying drawings and preferred embodiments.

[0022] Ginseng Figure 1 As shown, the present invention provides an intelligent projection writing whiteboard 100, which includes at least one writing panel, the plane of which constitutes the writing surface 110 of the whiteboard; the writing panel is made of a light-transmitting material; and the back surface of the writing panel forms a micro-granular prism 120.

[0023] In this embodiment, the writing panel can be a panel made of glass, organic glass, resin material, acrylic plate and the like. The writing panel can be one or multiple panels combined together, can be made into a flat surface, or can be push-pull type. The micro-granular prisms 120 are irregular in shape, and their cross-sections can be prismatic, staggered well-shaped, square, elliptical, etc., and are arranged and distributed on the back surface of the writing panel in a unit or array manner, so that micro-lenses are formed on the front and back surfaces of the writing panel, and the lens image cannot form a light spot reflection. Specifically, the technology of arranging micro-granular prisms on the back surface of the writing panel can effectively control the angle of the light, so that the light emitted by the projection light source can be finally emitted at the expected angle after being reflected by the orderly arranged prisms, thereby achieving the problem of controlling the viewing angle.

[0024] In one preferred embodiment, the smart projection writing whiteboard includes a frame, within which at least one writing panel is disposed. In this embodiment, the frame is used to secure the smart projection writing whiteboard and may be made of metal. In particular, when the smart projection writing whiteboard of the present application includes multiple writing panels, the frame also serves to reinforce the combination of the multiple writing panels.

[0025] In one preferred embodiment, the writing panel is made of anti-glare glass. In this embodiment, the flat surface of the anti-glare glass constitutes the writing surface 110 of the whiteboard 100; the back surface of the anti-glare glass forms micro-granular prisms 120. The anti-glare glass is tempered and explosion-proof to prevent splashing and injury if broken.

[0026] In one preferred embodiment, a micro-prismatic reflective film 130 is provided on the outer surface of the back surface of the writing panel; the micro-prisms in the micro-prismatic reflective film 130 are arranged and distributed in a regular and orderly manner.

[0027] In this embodiment, the microprismatic reflective film continuously reflects light, concentrating it so that light rays that meet certain angles are emitted, controlling the light's angle of emission and increasing its brightness. Light rays that do not meet these angles are refracted back through the white reflective film and reused. This allows the microprismatic reflective film to increase viewing angle and brightness. Specifically, the microprismatic reflective film is a resin film.

[0028] In one preferred embodiment, a white resin film 140 is disposed outside the micro-prismatic reflective film. The white resin film 140 has the function of reflecting the projected image. Specifically, among the light rays incident from the writing surface of the writing panel, the light rays that do not conform to the angle can be reflected by the white resin film and enter the next prism to be reflected and utilized again.

[0029] In one preferred embodiment, the roughness of the anti-glare glass writing surface is 3 to 12 μm. In this embodiment, to ensure smooth chalk writing on the smart projection writing whiteboard and allow students to clearly see the content on the whiteboard, the anti-glare tempered glass writing surface must meet a certain roughness. This roughness can be achieved by changing the flatness of the glass surface through high-temperature spraying or chemical dissolution.

[0030] Compared with the existing technology, the intelligent projection writing whiteboard of this application has the following technical effects:

[0031] (1) The intelligent projection writing whiteboard of the present application is made of glass. The glass surface has good wear resistance and is not easily worn out after repeated writing. It is not easy to age and can be permanently written with a pen or chalk.

[0032] (2) The smart projection writing whiteboard of the present application is easy to wipe after writing. No professional potions are needed. Just use an ordinary eraser to wipe it, which saves costs and is more convenient to use.

[0033] (3) When the projection image is projected on the smart projection writing whiteboard of the present application, its surface is uniformly diffusely reflective, and no light spots are formed, so the viewer can see a clear projection image. At the same time, when the smart projection writing whiteboard of the present application is used as a writing panel, the viewer can also see the written content more clearly.

[0034] (4) The smart projection writing whiteboard of the present application utilizes the micro-particle prism and micro-prismatic reflective film on the back of the writing panel to achieve light retroreflection gain, thereby increasing the brightness of the projected image and achieving a better effect. At the same time, the angles of the incident light and the retroreflected light are increased, achieving almost blind-angle-free image reflection, allowing students sitting in the front row to clearly see the fonts and images on the smart projection writing whiteboard of the present application within a wide viewing angle.

[0035] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An intelligent projection writing whiteboard, characterized in that: The whiteboard includes at least one writing panel, the plane of the writing panel constituting the writing surface of the whiteboard; the writing panel is made of light-transmitting glass; the writing panel is an anti-glare glass panel; the roughness of the glass surface is changed by high-temperature spraying or chemical dissolution on the glass surface; the roughness of the writing surface of the anti-glare glass panel is 3 to 12 μm; The back surface of the writing panel is formed with micro-granular prisms; A micro-prismatic reflective film is provided on the outer surface of the back surface of the writing panel, and the micro-prismatic reflective film is a resin film; the micro-prisms in the micro-prismatic reflective film are regularly and orderly arranged and distributed; A white resin film is provided on the outside of the micro-prismatic reflective film; The micro-granular prisms are irregular in shape and are arranged in a unit or array manner on the back surface of the writing panel.

2. The intelligent projection writing whiteboard according to claim 1, characterized in that: The intelligent projection writing whiteboard comprises a frame, and at least one writing panel is arranged in the frame.

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