PURPOSE: To form an open space convenient for arrangement and takeout operations without increasing exposure time at all by forming an exposure position and an open operation area by being tilted upwards by a frame for supporting a transparent panel.

CONSTITUTION: An almost rectangular lamp housing 56 provided with a control panel 58 on a front surface easily viewable almost at the height of eyes for an operator is provided and the lamp housing 56 houses the light source of the form of a high intensity lamp 60 and is positioned in a center right above the frame 38 and a base part 32. Light from the excited lamp 60 is focused by an internal reflector 62 similarly housed in the housing 56 and sent downwards and desired light intensity is secured on the operation surface of the glass panel 40 of the frame 38 present at a closed position arranged horizontally. Then, the lamp housing 56 is supported by a freely turnable frame 38 and moved together with the frame so as to be turned upwards to an open position, and at the position, the viewing field of the operator at the normal height of the eyes can view the entire operation surface of the base part 32 while being hardly obstructed as indicated by the line 68 of sight.