CN211308038U

CN211308038U - Photosensitive myopia-preventing curved blackboard

Info

Publication number: CN211308038U
Application number: CN201920265750.XU
Authority: CN
Inventors: 张红霞; 赵俊; 陈其珠
Original assignee: Qiqihar University
Current assignee: Qiqihar University
Priority date: 2019-02-26
Filing date: 2019-02-26
Publication date: 2020-08-21
Anticipated expiration: 2029-02-26

Abstract

The utility model discloses a photosensitive myopia prevention curved surface blackboard, including photosensitive adjusting device, the curved blackboard face of ground glass, light-permeable coating to and backplate, photosensitive adjusting device comprises background light, photosensitive sensor and fuse. The utility model adopts the design of the blackboard background light to adjust, thereby reducing the visual blurring caused by the influence of the external light source on the light of the blackboard and the shortsightedness of the eyes of people caused by the contrast of the light intensity in the space; the curved surface structural design reduces the light blind area of the students at different positions when the students look at the blackboard due to the fact that the diffuse reflection coefficient of the surface of the blackboard is too small.

Description

Photosensitive myopia-preventing curved blackboard

Technical Field

The invention relates to the technical field of practical teaching equipment, in particular to a photosensitive myopia-preventing curved blackboard.

Background

In the teaching work of schools, in order to clarify the teaching contents and the detailed solutions of various examples, teachers often need to write multiple blackboard-writing on a blackboard, and the importance of the blackboard is self-evident. However, most of the existing blackboards only consist of one or a plurality of plane boards, and opaque blackboard paint is brushed on the blackboard, so that the blackboard has great limitation on better seeing characters on the blackboard by students, for example, when a student sitting in the middle sees the blackboard clearly, but students on two sides and at the back see the blackboard, the characters on the blackboard cannot be seen clearly at all due to weak reflection or light and angle, especially in a big classroom, the problem is more prominent, which affects the enthusiasm of the students in class to a certain extent, and the eyes of the students are short-sighted when the students see the blackboard for a long time in such an environment.

Disclosure of Invention

The blackboard is used for overcoming the defects that the vision of students is reduced due to unclear blackboard watching caused by insufficient light reflection and light source in the prior art; the utility model provides a curved blackboard adopting a photosensitive sensor to adjust backlight, which can reduce the unclear vision and the visual deterioration caused by dim light and other reasons by adjusting the background light of the blackboard through a photosensitive adjusting device; and the blind area of sight caused by different seat positions in teaching activities is reduced by the curved surface structure of the blackboard.

The utility model provides a technical scheme that its technical problem adopted is: photosensitive myopia prevention curved surface blackboard, including photosensitive adjusting device 1, the crooked type blackboard face of ground glass 2, light-permeable coating 3, and backplate 4, photosensitive adjusting device is by background light 1.3, photosensitive sensor 1.2 and fuse 1.1 are constituteed, 4 surface distribution of backplate has pit 4.1, can install background light 1.3, every background light 1.3 is connected by integrated circuit 4.2, and there is wire 5 outside backplate 4, photosensitive sensor 1.2 and fuse 1.1 have been connected.

Background light 1.3 adopts the gentle light formula LED small bulb of protection eyesight in photosensitive adjusting device 1, and photosensitive sensor 1.2 sets up outside backplate 4 to connect on integrated circuit 4.2 by wire 5, background light 1.3 equipartition is in the pit 4.1 on backplate 4 surfaces, and each LED small bulb adopts integrated circuit 4.2 to connect to adjust its luminance by photosensitive sensor 1.2.

The curved blackboard face 2 made of ground glass is in the shape of a single-sided arc, low in the middle and high on two sides, can diffuse light and is arranged on the outermost layer of the whole blackboard.

The light-permeable coating 3 is the middle layer of the whole blackboard, the outer surface of the light-permeable coating is provided with the light-permeable coating, and the light of the internal background lamp 1.3 can penetrate through the coating.

The surface of the back plate 4 is provided with uniform pits 4.1, background lamps 1.3 can be placed in the pits 4.1, and the integrated circuit 4.2 is arranged between each pit 4.1 and connected with the LED small bulbs.

The utility model has the advantages that: the utility model adopts the design of the blackboard background light to adjust, thereby reducing the visual blurring caused by the influence of the external light source on the light of the blackboard and the shortsightedness of the eyes of people caused by the contrast of the light intensity in the space; the utility model discloses curved surface structural design has reduced the student when different positions, because the light blind area when seeing the blackboard that blackboard surface diffuse reflection coefficient undersize and lead to.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a schematic view of the present invention;

fig. 2 is an exploded view of the present invention;

FIG. 3 is a schematic view of a back plate structure.

Detailed Description

Photosensitive myopia prevention curved surface blackboard, including photosensitive adjusting device 1, the crooked type blackboard face of ground glass 2, light-permeable coating 3, and backplate 4, photosensitive adjusting device 1 comprises background light 1.3, photosensitive sensor 1.2 and fuse 1.1, 4 surface distribution of backplate have pit 4.1, can install background light 1.3, every background light 1.3 is connected by integrated circuit 4.2, and there is wire 5 outside backplate 4, photosensitive sensor 1.2 and fuse 1.1 have been connected.

When the photosensitive sensor in the photosensitive sensor 1.2 receives external light, the brightness of the background lamp 1.3 can be adjusted according to the intensity of the light, then the light of the background lamp 1.3 is mapped to the curved blackboard surface 2 of the ground glass through the light-permeable coating 3 of the blackboard, so that the contrast between the light in a classroom and the light of the blackboard is reduced, the eyesight of people is protected, and the definition of the blackboard is increased.

The structural design of the curved blackboard face 2 made of ground glass enables light rays to be converged when a person looks at the blackboard at different visual angles, and enables more light rays reflected by the blackboard face to enter the visual field of the person, so that blind areas are reduced.

Claims

1. Photosensitive myopia prevention curved surface blackboard, including photosensitive adjusting device (1), curved blackboard face of ground glass (2), light-permeable coating (3), and backplate (4), photosensitive adjusting device is by background light (1.3), photosensitive sensor (1.2) and fuse (1.1) are constituteed, backplate surface distribution has pit (4.1), can install background light (1.3), every background light (1.3) are connected by integrated circuit (4.2), and there are wire (5) outside backplate (4), photosensitive sensor (1.2) and fuse (1.1) have been connected.

2. The photosensitive curved blackboard for preventing myopia according to claim 1, wherein: background light (1.3) adopt the gentle light formula LED small bulb of protection eyesight in photosensitive adjusting device (1), and photosensitive sensor (1.2) set up outside backplate (4) to connect on integrated circuit (4.2) by wire (5), background light (1.3) equipartition is in pit (4.1) on backplate (4) surface, and each LED small bulb adopts integrated circuit (4.2) to connect, and adjusts its luminance by photosensitive sensor (1.2).

3. The photosensitive curved blackboard for preventing myopia according to claim 1, wherein: the curved blackboard face (2) is made of ground glass, is in the shape of an arc on one side, is low in the middle and high on two sides, can diffuse light and is arranged on the outermost layer of the whole blackboard.

4. The photosensitive curved blackboard for preventing myopia according to claim 1, wherein: the light-permeable coating (3) is the middle layer of the whole blackboard, the outer surface of the light-permeable coating is provided with the light-permeable coating, and the light of the internal background lamp (1.3) can penetrate through the coating.

5. The photosensitive curved blackboard for preventing myopia according to claim 1, wherein: even pit (4.1) are provided with on backplate (4) surface, can place background light (1.3) in pit (4.1), integrated circuit (4.2) set up between every pit (4.1), connect the little bulb of LED.