Image display device for teaching projector
A technology of image display equipment and projectors, which is applied in the direction of educational appliances, instruments, optics, etc., can solve the problems of difficult handling, poor support stability, difficult disassembly and assembly of screens, etc., to prevent falling off, expand support spacing, and improve convenience Effect
Active Publication Date: 2019-07-05
HUAIHUA UNIV
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Problems solved by technology
[0005] In view of the deficiencies in the prior art, the present invention provides an image display device for teaching projectors, which has the advantages of good support stability, easy disassembly and assembly of the screen, and convenient transportation, and solves the problem of the stability of the support of the existing image display devices for teaching projectors. Poor performance, not easy to disassemble and assemble the screen, and difficult to carry
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[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0029] see Figure 1-6, an image display device for a teaching projector, comprising a clamping block 1, fixed shafts 2 are fixedly installed in the middle of both sides of the clamping block 1, and torsion springs 3 are movably fitted on the outer sides of the two fixed shafts 2, and the two torsion springs The outside of the spring 3 is movably fitted with a rotating tube 4, and the inner walls on one side of the two rotating tubes 4 are connected to the out...
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The invention relates to the technical field of teaching equipment, and discloses an image display device for a teaching projector. The image display device comprises a clamping block, and the centralparts of two sides of the clamping block are fixedly provided with fixed shafts. The outer sides of the two fixed shafts are movably provided with torsional springs in a sleeved manner, and the outersides of the two torsional springs are movably provided with rotating tubes in a sleeved manner. Moreover, the inner wall of one side of each rotating tube is in transmission connection with the outer side of the corresponding fixed shaft through one corresponding torsional spring. One side of the inner cavity of each rotating tube is movably provide with a first spring in a sleeved manner, and the other side of the inner cavity of each rotating tube is movably provided with a telescoping rod in a sleeved manner. According to the invention, the interior of each rotating tube is provided witha telescoping rod in a sleeved manner, and the telescoping rods can stretch out and draw back, thereby enlarging the support gap and improving the stability. The image display device is provided withtwo rotating tubes and two fixed blocks, and the spacing between the rotating tubes and the fixed blocks can be adjusted, thereby enlarging the support area of the bottom of the image display device,and improving the support stability of the image display device.
Description
technical field [0001] The invention relates to the technical field of teaching equipment, in particular to an image display device for a teaching projector. Background technique [0002] Image display equipment for projectors is one of the most commonly used products in the peripheral equipment of projectors. If the image display equipment for projectors is properly matched with the projector, you can get high-quality projection effects. The image display equipment for projectors is general in function. It can be divided into two types: reflection type and transmission type. Reflection type is used for front projection, and transmission type is used for rear projection. Front projection screen is divided into flat screen and arc screen. From the texture, it can be divided into glass screen, metal screen and Embossed plastic curtains, etc. Generally speaking, the picture effect of hard curtains is better than that of soft curtains. [0003] Image display equipment for teach...
Claims
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IPC IPC(8): G09B5/02G03B21/58
CPCG03B21/58G09B5/02
Inventor 王旭王晓鹏王双见张丹
Owner HUAIHUA UNIV