A multimedia screen device for audio-visual education which is convenient for teaching
A multimedia and video screen technology, applied in projection devices, educational appliances, optics, etc., can solve problems such as cost increase, troublesome installation and disassembly, and hidden safety hazards, and achieve the effect of reducing costs
Inactive Publication Date: 2019-01-18
大连锦晟电教设备有限公司
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Problems solved by technology
[0004] In order to make the projection effect easy to watch, the traditional screen device usually fixes the screen at a higher position on the wall. It is very troublesome to install and disassemble. Replacement as a whole, instead of replacing the curtain separately, increases the cost
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[0025] The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.
[0026] see Figure 1-3 , a multimedia video screen device for audio-visual teaching that is convenient for teaching, comprising a device body 1, the device body 1 includes a curtain storage box 2, and a curtain 3 is movable in the curtain storage box 2, and the left and right sides of the device body 1 are respectively equipped with lower Support plate 15 and upper support plate 16, upper support plate 15 and lower support plate 16 are all fixedly installed on the body of wall by bolts, and the bottom of lower support plate 15 is fixedly installed with second motor 18, and the output end of second motor 18 is connected with The lifting screw 17, the other end of the lifting screw 17 extends upward through the lower support plate 15, and is connected with the upper support plate 16 through a bearing, the curtain storage box 2 is slidably connected t...
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The invention discloses a multimedia screen device for audio-visual education which is convenient for teaching. The multimedia screen device includes a device body, A main body of that device comprisea curtain storage box, A curtain is movably stored and rolled in the curtain storage box, A low supporting plate and an upper support plate are respectively arranged on that left and right sides of the device body, A second motor is fixedly installed at the bottom of the lower support plate, the output end of the second motor is connected with a lifting screw rod, the other end of the lifting screw rod extends upward through the lower support plate and is connected with the upper support plate through bearings, and the curtain storage box is slidably connected with the lifting screw rod. As that curtain storage box is slidably connected with the lifting screw rod through the fix block, the curtain storage box can be moved to the bottom end when the screen is installed or disassembled, andthe safety hidden hazard caused by climbing is avoided. A movable side cover is arranged on the right side of the curtain storage box, a first through hole is arranged on the rotating shaft, and a second through hole is arranged on the bottom of the curtain storage box, so that the curtain is convenient to be disassembled and replaced separately, and the cost is reduced.
Description
technical field [0001] The invention relates to the technical field of audio-visual teaching appliances, in particular to a multimedia video screen device for audio-visual teaching which is convenient for teaching. Background technique [0002] Audio-visual education is modern education with computers, projectors, slides, recordings, videos, radio, movies, television and other modern educational technology education, using modern educational theories and technologies, through the design, development, application, management and evaluation of teaching processes and resources , in order to realize the theory and practice of teaching modernization. The development of modern educational technology in our country began in the 1920s, which is called audio-visual education. At that time, slideshows, movies and other media used in audio-visual education activities were a big step forward compared with the original word-of-mouth learning and later printing media used in teaching. It...
Claims
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IPC IPC(8): G03B21/58G09B5/02B08B1/00B08B1/02B08B1/20
CPCG03B21/58G09B5/02B08B1/20B08B1/12
Inventor 孙永琨
Owner 大连锦晟电教设备有限公司