Multifunctional liquid crystal visual chart
By designing a multi -functional LCD vision table, the combination of LCD fixed shell, acrylic transparent board and outer aluminum alloy protective board, combined with the adsorption mechanism of permanent magnet strips and metal magnetic pads, and the design of cloth ruler and shafts, solves the LCD The visual schedule is susceptible to dust and bumps in the classroom, and improves the accuracy and use effect of vision detection.
Patent Information
- Application Number
- CN202420849942.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-04-23
AI Technical Summary
When the existing LCD vision meter is installed in the classroom, the display screen is easily contaminated with dust and is prone to collision and damage, and the distance of students' self-checking is inaccurate, resulting in insufficient accuracy in vision detection.
A multi -function LCD vision table is designed, which uses a combination of LCD fixed shell, acrylic transparent board and outer aluminum alloy protective board. The design is easy to adjust the detection distance.
Effectively prevent the liquid crystal display from being stained with dust and damage, and improves the accuracy and use effect of vision detection.
Smart Images
Figure CN222398289U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vision detection, in particular to a multifunctional liquid crystal vision chart. Background Art
[0002] The eye chart is a chart used to measure vision. With the development of science and technology, the eye chart is no longer made of simple drawings. Existing eye charts also include light box eye charts and LCD eye charts. The LCD eye chart is suitable for general physical examinations of children, teenagers or adults. Therefore, the LCD eye chart is widely installed in classrooms of primary, secondary and high schools.
[0003] However, the existing LCD eye chart is installed in the classroom. There are a large number of students in the classroom, many of whom are naughty students. The display screen of the LCD eye chart is exposed to the outside, which is not only easy to be contaminated with dust, affecting the observation effect, but also easy to be damaged by bumps.
[0004] In addition, the existing method requires standing at a distance of 5m or 2.5m to watch, and when students test themselves in the classroom, they usually test by estimating the approximate distance, which easily leads to inaccurate vision. Therefore, we propose a multifunctional liquid crystal eye chart. Utility Model Content
[0005] The purpose of the utility model is to provide a multifunctional liquid crystal vision chart to solve the above-mentioned deficiencies in the technology.
[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multifunctional liquid crystal eye chart, comprising a liquid crystal fixed shell, a liquid crystal display screen is fixedly provided on the bottom inner wall of the liquid crystal fixed shell, an acrylic transparent plate is fixedly provided on the inner wall of the liquid crystal fixed shell, a socket is opened on the outer wall of one side of the bottom of the liquid crystal fixed shell, an outer aluminum alloy protection plate is plugged into the inner wall of the socket, a permanent magnet bar is fixedly provided on the top outer wall of the outer aluminum alloy protection plate, a metal magnetic sheet is fixedly provided on the top inner wall of the liquid crystal fixed shell, the metal magnetic sheet is adsorbed on the outer wall of the permanent magnet bar, a circular fixed shell is fixedly provided on the outer wall of one side of the liquid crystal fixed shell, a rotating shaft is movably connected to the central position of the outer wall of one end of the circular fixed shell through an opening using a bearing, and a cloth ruler is rolled up on the outer wall of the rotating shaft.
[0007] Preferably, a placement box is fixedly provided on one outer wall of the liquid crystal fixed shell, a remote controller is plugged into the inner wall of the placement box, and the outer wall of the remote controller includes remote control buttons distributed at equal distances, so that the symbols displayed on the liquid crystal display can be easily controlled by the remote controller.
[0008] Preferably, a push-pull handle is fixedly provided on the outer wall at one end of the bottom of the outer aluminum alloy protection plate, and the push-pull handle facilitates pulling the outer aluminum alloy protection plate to slide on the inner wall of the socket.
[0009] Preferably, a crank is fixedly provided on the outer wall of one end of the rotating shaft, and the crank is used to drive the rotating shaft to rotate.
[0010] Preferably, two fixing blocks are fixedly provided on the outer wall of one side of the top of the liquid crystal fixed shell, and the outer walls of the two fixing blocks are provided with fixing holes, and the inner walls of the fixing holes are provided with matching bolts, which are fixed to the wall through the bolts passing through the inner walls of the fixing holes, so as to facilitate fixing the utility model at a designated position.
[0011] In the above technical solution, the technical effects and advantages provided by the utility model are:
[0012] The outer aluminum alloy protection plate is pushed upward by the push-pull handle, and one end of the top of the outer aluminum alloy protection plate is adsorbed on the bottom outer wall of the metal magnetic suction plate through the permanent magnet bar. The LCD screen is located on the inner wall of the liquid crystal fixed shell and is protected by the acrylic transparent plate and the outer aluminum alloy protection plate. Dust can be prevented from contaminating the outer wall of the LCD screen, and good protection effect can be achieved, thus preventing the utility model from being damaged in the classroom and having a good use effect.
[0013] The rotating shaft is rotated by a crank, the cloth ruler is rotated out through the rotating shaft, and the cloth ruler is pulled out to a specified length, which is convenient for controlling the distance between the detection personnel and the utility model and is conducive to improving the accuracy of vision detection. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.
[0015] Figure 1 This is a schematic diagram of the structure of a multifunctional liquid crystal vision chart of the utility model;
[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of a multifunctional liquid crystal vision chart of the utility model;
[0017] Figure 3 The utility model is a schematic diagram of the expanded structure of a multifunctional liquid crystal vision chart.
[0018] Description of reference numerals:
[0019] 1 LCD fixing shell, 2 fixing block, 3 fixing hole, 4 LCD display screen, 5 acrylic transparent plate, 6 socket, 7 outer aluminum alloy protection plate, 8 permanent magnet bar, 9 metal magnetic sheet, 10 push-pull handle, 11 placement box, 12 remote control, 13 remote control button, 14 round fixing shell, 15 rotating shaft, 16 cloth ruler, 17 crank. DETAILED DESCRIPTION
[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0021] Embodiment 1
[0022] Refer to the instruction manual Figure 1-3 A multifunctional liquid crystal eye chart comprises a liquid crystal fixed shell 1, a liquid crystal display screen 4 is fixedly arranged on the bottom inner wall of the liquid crystal fixed shell 1, an acrylic transparent plate 5 is fixedly arranged on the inner wall of the liquid crystal fixed shell 1, a socket 6 is opened on the outer wall of one side of the bottom of the liquid crystal fixed shell 1, an outer aluminum alloy protection plate 7 is plugged into the inner wall of the socket 6, a permanent magnet bar 8 is fixedly arranged on the top outer wall of the outer aluminum alloy protection plate 7, a metal magnetic suction sheet 9 is fixedly arranged on the top inner wall of the liquid crystal fixed shell 1, and the metal magnetic suction sheet 9 is adsorbed on the outer wall of the permanent magnet bar 8, a circular fixed shell 14 is fixedly arranged on the outer wall of one side of the liquid crystal fixed shell 1, a rotating shaft 15 is movably connected to the central position of the outer wall of one end of the circular fixed shell 14 through an opening using a bearing, and a cloth strip ruler 16 is rolled up on the outer wall of the rotating shaft 15.
[0023] Embodiment 2
[0024] Based on the first embodiment, a placement box 11 is fixedly provided on the outer wall of one side of the liquid crystal fixed shell 1, and a remote control 12 is inserted into the inner wall of the placement box 11. The outer wall of the remote control 12 includes remote control buttons 13 distributed at equal distances, and the remote control 12 is used to conveniently control the symbols displayed on the liquid crystal display screen 4.
[0025] Embodiment 3
[0026] Based on the first embodiment, a push-pull handle 10 is fixedly arranged on the outer wall at one end of the bottom of the outer aluminum alloy protection plate 7, and the push-pull handle 10 is used to facilitate pulling the outer aluminum alloy protection plate 7 to slide on the inner wall of the socket 6. A crank 17 is fixedly arranged on the outer wall at one end of the rotating shaft 15, and the crank 17 is used to facilitate driving the rotating shaft 15 to rotate. Two fixing blocks 2 are fixedly arranged on the outer wall on one side of the top of the liquid crystal fixed shell 1, and fixing holes 3 are opened on the outer walls of the two fixing blocks 2. The inner walls of the fixing holes 3 are provided with matching bolts, which are fixed to the wall by passing the bolts through the inner walls of the fixing holes 3, so as to facilitate fixing the utility model at a designated position.
[0027] Working principle of this utility model:
[0028] Refer to the instruction manual Figure 1-3When the utility model is used, the fixing block 2 provided on the top outer wall of the liquid crystal fixing shell 1 is first fixed to the designated position on the wall by using bolts to pass through the inner wall of the fixing hole 3, and the utility model is fixed to the designated position on the wall. The liquid crystal display screen 4 is connected to the power supply, and the outer aluminum alloy protection plate 7 is pulled down from the inner wall of the permanent magnet bar 8 by the push-pull handle 10. The user observes the symbols displayed on the liquid crystal display screen 4 through the acrylic transparent plate 5, and controls the screen symbols displayed on the liquid crystal display screen 4 through the remote control 12. The rotating shaft 15 is rotated by the crank 17, and the cloth strip ruler 16 is moved by the rotating shaft 15 Swing out and pull the cloth ruler 16 to a specified length, which is convenient for controlling the distance between the tester and the utility model, and is beneficial to improving the accuracy of vision detection. The outer aluminum alloy protection plate 7 is pushed upward by the push-pull handle 10, and the top end of the outer aluminum alloy protection plate 7 is adsorbed on the bottom outer wall of the metal magnetic suction sheet 9 through the permanent magnet bar 8. The LCD screen 4 is located on the inner wall of the liquid crystal fixed shell 1 and is protected by the acrylic transparent plate 5 and the outer aluminum alloy protection plate 7. The outer wall of the LCD screen 4 can be prevented from being contaminated with dust, and has a good protective effect, preventing the utility model from being damaged in the classroom, and having a good use effect.
[0029] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A multifunctional liquid crystal eye chart, comprising a liquid crystal fixed housing (1), characterized in that: A liquid crystal display screen (4) is fixedly provided on the inner wall of the bottom of the liquid crystal fixed shell (1); an acrylic transparent plate (5) is fixedly provided on the inner wall of the liquid crystal fixed shell (1); a socket (6) is opened on the outer wall of one side of the bottom of the liquid crystal fixed shell (1); an outer aluminum alloy protection plate (7) is plugged into the inner wall of the socket (6); a permanent magnet bar (8) is fixedly provided on the outer wall of the top of the outer aluminum alloy protection plate (7); a metal magnetic attraction sheet (9) is fixedly provided on the inner wall of the top of the liquid crystal fixed shell (1); the metal magnetic attraction sheet (9) is adsorbed on the outer wall of the permanent magnet bar (8); a circular fixed shell (14) is fixedly provided on the outer wall of one side of the liquid crystal fixed shell (1); a rotating shaft (15) is movably connected to the central position of the outer wall of one end of the circular fixed shell (14) through an opening using a bearing; a cloth ruler (16) is rolled up on the outer wall of the rotating shaft (15).
2. A multifunctional liquid crystal eye chart according to claim 1, characterized in that: A placement box (11) is fixedly provided on one outer wall of the liquid crystal fixed shell (1), a remote controller (12) is plugged into the inner wall of the placement box (11), and the outer wall of the remote controller (12) includes remote control buttons (13) distributed at equal distances.
3. The multifunctional liquid crystal eye chart according to claim 1, characterized in that: A push-pull handle (10) is fixedly provided on the outer wall of one end of the bottom of the outer aluminum alloy protection plate (7).
4. The multifunctional liquid crystal eye chart according to claim 1, characterized in that: A crank (17) is fixedly provided on the outer wall of one end of the rotating shaft (15).
5. The multifunctional liquid crystal eye chart according to claim 1, characterized in that: Two fixing blocks (2) are fixedly provided on the outer wall of one side of the top of the liquid crystal fixing housing (1), the outer walls of the two fixing blocks (2) are provided with fixing holes (3), and the inner walls of the fixing holes (3) are provided with matching bolts.