Lamp clamp and lamp apparatus applying the same

A lamp apparatus, selectively clamped on an upper edge of a display, wherein the display has a displaying surface and a back surface, and the lamp apparatus comprises:

• a light source;
• a first clamping member, comprising:
• a connecting portion, a first end of the connecting portion connected to the light source;
• and
• a stopping portion, movably connected to the connecting portion and having a stopping surface selectively disposed at a first position and a second position on the connecting portion;
• and
• a second clamping member, connected to a second end of the connecting portion, wherein when the lamp apparatus is clamped on the upper edge of the display, the stopping surface touches a third position on the displaying surface and the second clamping member touches the back surface;
• when the stopping surface is disposed on the first position, the light source is separated from the third position on the displaying surface by a first distance;
• when the stopping surface is disposed on the second position, the light source is separated from the third position on the displaying surface by a second distance, and the second distance is greater than the first distance.