| 摘要 |
Provided is a focus unit fastening device for a projector, in which a plurality of fastening portions for coupling a focus unit to the projector by pushing and inserting the focus unit into the projector are formed integrally with a main body housing and the focus unit. The focus unit fastening device includes a projector main body housing, a focus unit engaged to the main body housing, a first fastening portion provided on the main body housing and the focus unit to fasten the focus unit to the main body housing by pushing the focus unit in a first direction and to prevent the focus unit from moving in a second direction perpendicular to the first direction, and a second fastening portion provided on the main body housing and the focus unit to fasten the focus unit to the main body housing by pushing the focus unit in the first direction and to prevent the focus unit from moving in the first direction.
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