A computer multimedia teaching device for ideological and political education
A multimedia teaching and computer technology, applied in educational appliances, projection devices, cleaning methods using gas flow, etc., can solve the problems of blurred video images, diffuse reflection of lenses, and imperfect technical considerations, and achieve improved clarity, The effect of avoiding lens scratches and prolonging the service life
Inactive Publication Date: 2021-02-09
ZHENGZHOU RAILWAY VOCATIONAL & TECH COLLEGE
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Problems solved by technology
[0002] With the rapid development of society, multimedia equipment has been popularized in people's daily life, especially in the teaching career, teachers can reasonably choose and use modern teaching media, and organically combine with traditional teaching methods to present to the audience with a variety of media information Students, to achieve the best teaching effect, in the process of multimedia teaching, the projector is an indispensable equipment, but the current technical considerations are not perfect, and it has the following disadvantages: In southern China, the temperature begins to rise every spring, and there is a warm and humid When the airflow blows from the South China Sea and encounters the projector lens, due to the low temperature of the lens, the water vapor on the surface of the lens will liquefy and condense, which in turn will cause diffuse reflection on the projector lens, causing the video image to be blurred after being projected onto the screen. Classroom teaching makes an impact
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[0026] see Figure 1-Figure 2 , the present invention provides a computer multimedia teaching device for ideological and political education, the structure of which includes a projector main body 1, a control panel 2, a power cord connection groove 3, a heat dissipation hole 4, and a focus adjustment knob 5, and the projector main body 1 is a circle Angular rectangular structure, the control panel 2 is located on the upper surface of the projector main body 1 and is electrically connected to the projector main body 1, the power cord connection groove 3 is nested in the back of the projector main body 1, and the heat dissipation holes 4 are equidistant and uniform Distributed on the right side of the projector main body 1, the focus adjustment knob 5 is a cylindrical structure and is located above the projector main body 1. The projector main body 1 is composed of a multimedia wire socket 1a, a cooling fan 1b, a projection imaging structure 1c, and a protective shell 1d, mirror...
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The invention discloses a computer multimedia teaching device for ideological and political education. Its structure includes a projector main body, a control panel, a power line connection groove, a heat dissipation hole, and a focus adjustment knob. The computer multimedia teaching device passes through a lens maintenance device and a booster cleaning device. In combination, before using the spring multimedia projector in the southern region, first use the pressurized airflow to remove the dust on the lens surface, then scrape off the condensed water mist on the surface, and apply anti-fog agent on the lens surface to prevent the lens of the projector from forming. Diffuse reflection after the fog causes teachers' courseware to be blurred after projecting onto the screen, improving the clarity of multimedia equipment projection; at the same time, after use, clean the chalk dust on the lens surface and seal the lens to avoid lens scratches Etc., prolong the service life of multimedia equipment.
Description
technical field [0001] The invention relates to the field of multimedia teaching equipment, in particular to a computer multimedia teaching device for ideological and political education. Background technique [0002] With the rapid development of society, multimedia equipment has been popularized in people's daily life, especially in the teaching career, teachers can reasonably choose and use modern teaching media, and organically combine with traditional teaching methods to present to the audience with a variety of media information Students, to achieve the best teaching effect, in the process of multimedia teaching, the projector is an indispensable equipment, but the current technical considerations are not perfect, and it has the following disadvantages: In southern China, the temperature begins to rise every spring, and there is a warm and humid When the airflow blows from the South China Sea and encounters the projector lens, due to the low temperature of the lens, th...
Claims
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IPC IPC(8): G03B21/14G09B5/02B08B5/02B08B1/00B08B13/00
CPCG03B21/14G03B21/145G09B5/02B08B5/02B08B13/00B08B1/143
Inventor 尹良吕娜
Owner ZHENGZHOU RAILWAY VOCATIONAL & TECH COLLEGE