Projection device

A projection device, comprising:

• a housing, having a first side wall and a second side wall connected to each other, wherein the first side wall has a connecting portion and a limit groove, the limit groove has a curved section and a linear section, the curved section extends around the connecting portion, the linear section is connected to the curved section, the second side wall has a projection hole, and an extension direction of the linear section is substantially parallel to a central axis of the projection hole;
• and
• a bracket assembly, comprising:
• an adapter, movably connected to the connecting portion;
• and
• a bracket, pivotally connected to the adapter and having a limit post that extends into the limit groove,
• wherein when the bracket rotates relative to the adapter, the limit post moves in the curved section, and
• wherein when the limit post moves to the linear section, the adapter is adapted to move in the connecting portion and the limit post is configured to move in the linear section when the adapter is moved.