A survey shows that 98% of people believe that multimedia teaching to students through a projector can greatly increase students 'attention in class. Using a projector can effectively improve students' ability to remember knowledge and allow students to better understand what they have learned . An experiment showed that teaching students through multimedia is more effective than non-multimedia teaching, which allows students to remember 10% of the class content. For schools, the projector has become an indispensable teaching tool for teachers after blackboards and chalks. With the rapid development of projector technology in recent years, the brightness, contrast, dustproof, and short-throw technologies have made rapid progress. The larger the classroom, the higher the brightness requirements In recent years, with the deepening of education reforms, the school teaching environment has changed dramatically, classrooms have grown larger, and the requirements for projectors have become higher and higher. Projectors with high brightness have become more and more popular with school teachers. In fact, when purchasing educational projectors, the brightness indicator has always been one of the most important indicators. Since 2010, various manufacturers have accelerated the pace of brightness improvement. The brightness of the products they put on has been greatly improved compared with the past products. Broadly speaking, if the brightness of a projector reaches or exceeds 2500 lumens, it can be defined as a high-brightness projector. Such a projector can meet the brightness requirements of a 60 square meters to 80 square meters classroom. Even without any shading treatment, the projector with a brightness of more than 2500 lumens can allow students to see a clear picture and protect their eyesight. The pictures, videos, audio and video, and text projected by the high-brightness projector can provide students with a vivid, vivid, and clear visual experience, making it easier for students to concentrate and learn the key content. With the popularity of high-brightness educational projectors in the education market in recent years, coupled with manufacturers' continuous introduction of new high-brightness projector products, projector products with high-brightness will be the focus of future education users. Schools favor energy-saving and environmentally friendly products The concept of energy saving and environmental protection has gradually penetrated into the hearts of the people. When purchasing products, everyone will also subconsciously see how much power it consumes, and it does not cost electricity. Against this background, the projector market is no exception, and various manufacturers have issued environmental protection cards. Products with low standby power, long lamp usage time, and no need to wait for direct shutdown are favored by users. In fact, purchasing energy-saving and environmentally friendly products can not only help users save electricity costs, but also help users reduce the cost of daily maintenance and reduce the labor of maintenance personnel. Now many projector manufacturers have adopted their own unique energy-saving and environmental protection technologies, such as the ECO environmental protection and energy-saving mode adopted by Acer projectors, which can reduce energy consumption by more than half and effectively extend the lamp life (up to 4000 hours). The "zero-watt standby" technology of the ACTO projector can greatly reduce the standby power consumption. It uses the characteristics of the infrared receiver tube without current flow when there is no infrared light to control the switching of the switching device and connect the switching device in series. power supply circuit. When disconnected, no current flows through the line, thereby realizing zero standby power consumption of electrical appliances. In addition, current mainstream projectors are equipped with power-off protection functions, the projector will automatically shut down, and users can directly turn off the power without completely cooling the lamp after use, which saves both power and trouble. Low noise design makes the classroom quieter In fact, for an educational projector, high brightness, high contrast, and high resolution are not enough, because the classroom is a special place, and it has high requirements for noise control. At present, the noise of general projectors generally reaches 30dB ~ 35dB. Such high noise is obviously not suitable for use in quieter conference rooms and classrooms. We can imagine how annoying the buzzing projector is when the students are seriously thinking about the questions given by the teacher. If the sound is louder, it may even affect normal teaching. But the problem ensues. It is well known that brightness and heat dissipation are proportional, the higher the brightness, the greater the heat dissipation. Educational projectors are high-brightness projectors, which generate more heat, which puts a lot of pressure on the heat dissipation system. Only by improving the heat dissipation system can we ensure high brightness while ensuring low noise. It is a more feasible method to reduce the power of the projector lamp and improve the luminous efficiency. If the lamp power of the projector is small, the heat dissipation design is more reasonable, and the heat dissipation area is larger, then the fan speed is lower, which means that the noise of the projector is lower. In addition to fans, the color wheel of DLP projectors is also an important source of noise. The general color wheel speed is 6000 rpm. However, the smaller the projector, the greater the noise of the color wheel of the projector. The sound of the color wheel in question is more harsh, and it will cause abnormal images. How to ensure high brightness and high contrast while reducing the noise of the projector is a difficult problem in front of each manufacturer. When there is demand, there is supply. Now some manufacturers have made changes in this regard. I believe that as the homogenization of projectors becomes more and more fierce, manufacturers will pay more attention to the details of products and the needs of subdivided fields, and try their best to meet them in order to increase their market share. Many of Mitsubishi's recently launched short-throw projector products use a low-noise design. It uses a low-noise multi-blade fan, and the cooling system has been greatly optimized, so that the noise level has been greatly reduced to 28dB. If you do n’t climb up and listen to the projector, you ca n’t hear it from 1 meter away The noise. This low noise ensures that the projector will not become a teaching tool that disturbs students' learning at any time.
Ergonomics has an important impact on product design, which directly affects the experience of product use; therefore, in product design, designers try to adhere to the principle of "humanization", so as to conform to the theory of ergonomics, so as to improve the comfort and experience of product use.
This ergonomic desk is designed with automatic lifting function and ergonomic design. At the same time, the hand controller also has multiple memory keys storage function, which can reach the height you want with one key.
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