Ventilation illumination device

A ventilator illumination device, comprising a light-emitting module for housing a light-emitting unit and a power box module for housing a power supply supplying direct current for the light-emitting unit, wherein,

• an anti-reversal installation structure is provided on the light-emitting module and the power box module, the anti-reversal installation structure limiting the light-emitting unit to be installed only in a state that the light-emitting unit faces towards one predetermined direction,
• wherein the light-emitting unit includes a lamp holder, a lamp tube and light-emitting chips arranged on one surface of the lamp tube, and the power box module comprises a power box body and a socket provided in the power box body for insertion of the lamp holder of the light-emitting unit;
• the anti-reversal installation structure comprises a half-circle flange provided on the lamp holder of the light-emitting unit near to the lamp tube and protruding lugs provided on one surface of the power box body near to the light-emitting module,
• wherein a positioning element, which extends towards the light-emitting module over a distance shorter than the protruding lugs, is disposed on the bottom of the one surface of the power box body near the light-emitting module, and an empty gap separates the positioning element from the flange of the lamp holder of the light-emitting unit when the lamp holder of the light-emitting unit is inserted into the socket;
• wherein both the positioning element and the protruding lugs hold the lamp holder.