The invention discloses a shutter type lamp box. The shutter type lamp box comprises a shell and a lamp holder, and light condensation boards and a modulator tube are arranged inside the lamp holder. The shutter type lamp box is characterized in that lamp caps are arranged at the two ends of the modulator tube; each lamp cap comprises a lamp cap body, a lug plate and a lock plunger, wherein a modulator tube connection through hole is formed in one end of the lamp cap body, the other end of the lamp cap body is vertically upward to be provided with a power source connection end in an extending mode, the power source connection end is internally provided with a slot, a line pressing plate used for locking the lug plate is arranged at the lower end of the lock plunger, the lock plunger is inserted into the slot and is in threaded connection with the lamp cap body, the lug plate is inserted into the through hole, on end of the lug plate is arranged below the line pressing plate, the other end of the lug plate is connected with a tungsten wire of the modulator tube, a connector of a power source is provided with a jack matched with the lock plunger, and the connector of the power source is matched with the power source connection end of the lamp cap body, so that rapid installation of the modulator tube is achieved.