Classroom projection display device

The utility model discloses a classroom projection display device which comprises a supporting bottom plate, a supporting telescopic rod is fixedly connected to the outer surface of the upper end of the supporting bottom plate, a fixing hole is formed in the lower end of the outer wall of the suppor...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	CAI YOUFEI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADVERTISING APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND,DEAF OR MUTE BLASTING CRYPTOGRAPHY DIAGRAMS DISPLAY EDUCATION EDUCATIONAL OR DEMONSTRATION APPLIANCES ENGINEERING ELEMENTS AND UNITS FRAMES, CASINGS, OR BEDS OF ENGINES OR OTHER MACHINES ORAPPARATUS NOT SPECIFIC TO AN ENGINE, MACHINE, OR APPARATUSPROVIDED FOR ELSEWHERE GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GLOBES HEATING LIGHTING MECHANICAL ENGINEERING PHYSICS PLANETARIA SEALS STANDS OR SUPPORTS THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	The utility model discloses a classroom projection display device which comprises a supporting bottom plate, a supporting telescopic rod is fixedly connected to the outer surface of the upper end of the supporting bottom plate, a fixing hole is formed in the lower end of the outer wall of the supporting telescopic rod, and a fixing buckle is fixedly connected to the upper end of the outer wall of the supporting telescopic rod. The outer wall of the fixing buckle is detachably connected with the inner side of the fixing hole, the outer surface of the upper end of the supporting telescopic rod is fixedly connected with the outer surface of the lower end of a fixing mechanism, a projection display machine is arranged at the upper end of the fixing mechanism, and a control button is fixedly connected to the upper end of the projection display machine. The front end of the inner wall of the projection display machine is fixedly connected with a projection lens, and the upper end of the inner side of the projection