Simple mobile-phone projection box

Abstract

The invention belongs to the technical field of projection, and particularly relates to a simple mobile-phone projection box. The projection box comprises a first supporting box (10) and a foot stool (14), the first supporting box (10) is connected with the foot stool (14) through a knuckle bearing (15), a convex lens (8) is arranged in the first supporting box (10), and a first box body (7) and a second box body (11) are arranged at the two ends of the first supporting box (10) respectively and each comprise a stretchable framework and sheltering cloth; a second supporting box (5) is arranged at the end, far away from the first supporting box (10), of the first box body (7), and a mobile phone groove (3) is formed in the second supporting box (5); a third supporting box (13) is arranged at the end, far away from the first supporting box (10), of the second box body (11), and a Fresnel lens (12) is arranged on the third supporting box (13). The projection box can be stretched and folded, and the projection angle can be adjusted.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of projection, in particular to a simple mobile phone projection box. [0003] 【Background technique】 [0004] The functions of the current smartphones are becoming more and more powerful. They are not limited to the functions of calling and sending text messages, but also have various functions such as reading books, watching movies, listening to music, surfing the Internet, and video chatting. Bring infinite convenience, but, when using the mobile phone to carry out the above work, because the screen size of the mobile phone itself is small, it is usually only suitable for one person to watch, and it is not suitable for sharing with everyone, which is very inconvenient. Therefore, a compact projection box is needed to turn the mobile phone into a portable projector. At present, the existing mobile phone projection supports mobile phones with fixed built-in chip software, which is expensive and app...

AI Technical Summary

Problems solved by technology

[0005] At present, some projectors on the Internet mainly use some electronic equipment, such as ballast LCD screens, but the production process is complicated, and some people use simple small hole boxes to directly project, but due to light leakage, the concentration is not enough, resulting in the projection screen It is not clear, and the projection effect is not ideal; and the battery power of the mobile phone itself is limited, and the mobile phone plays videos for a long time. Phone overheating, these problems need to be solved urgently

[0006] The Chinese patent with the publication number CN105278215A discloses a DIY simple mobile phone projector. The projector does not need any load electronic equipment. As long as it is controlled by itself, the screen of the mobile phone can be enlarged. The operation is more free and easy, and can be applied to Going out for camping, watching movies on mobile phones, etc., but the projector has the disadvantages of being unable to amplify the volume, poor heat dissipation, etc.

[0007] The Chinese patent with the publication number CN104391422A discloses a simple mobile phone projection box. This projector makes the projection image more balanced and undistorted, and realizes projection technology anytime and anywhere. It uses a mobile phone as a light source, has low cost, is convenient and quick to operate, and is suitable for current Ordinary smart phones, but the phone is fixed in a sealed projection box, which seriously affects the volume and sound quality when watching files with audio, and the projection box is not foldable, so it is not convenient to carry

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