Projection apparatus with device for adjusting projection angle of projection image

A projection apparatus, comprising:

• a projection unit, comprising a light source, a light valve and a lens, wherein the light source is adapted to provide an illumination beam, the light valve is adapted to convert the illumination beam into an image beam, the lens is adapted to project the image beam so as to form a projection image;
• a base, connected to the projection unit and comprising at least one first stopping portion;
• and
• a pivoting member, pivoted to the base and comprising at least one second stopping portion, wherein the pivoting member is adapted to electrically connect to an external power supply device,
• the base and the pivoting member are configured to adjust a projection angle of the projection image by relatively rotating the base and the pivoting member between a first stopping position and a second stopping position, wherein the first stopping position is 0 degree and the second stopping position is 350 degrees, and the at least one first stopping portion and the at least one second stopping portion are adapted to prop against each other as the base and the pivoting member relatively rotate with each other to the second stopping position, so as to stop the base and the pivoting member from relative rotation, wherein the pivoting member is able to remain electrically connected to the external power supply device as the base and the pivoting member relatively rotate with each other between the first stopping position and the second stopping position.