Board -like external light source of reactor

The utility model belongs to bioreactor especially indicates a board -like external light source of reactor. Including the panel, set up in faceplate interior surface's reflector panel, assemble in the light source on reflector panel surface, the panel left and right sides is equipped with the pinhole that can rotate the assembly with adjacent panel side. The utility model provides a low, the technical problem such as joining in marriage nature of expert is poor, illumination is inhomogeneous, illumination energy loss is big of the smooth utilization efficiency that exists of prior art. Advantages such as having that smooth utilization efficiency is high, application scope wide, lead to that joining in marriage nature is good, be convenient for transportation and installation, loss of light energy are little.