Abstract: An exhausting and cooling system for a cooking utensil, which exhausts gas or smoke generated during a cooking process and cools a lower portion of a grill. The exhausting and cooling system for the cooking utensil, which has a main body provided with a grill unit mounted on the upper surface thereof, includes an exhaust channel and an exhaust fan for inhaling air around the grill unit and exhausting the air downwardly; and a cooling channel and a cooling fan for blowing external air to the lower portion of the grill unit to cool the lower portion of the grill unit.

Abstract: A cathode ray tube includes a plurality of electrode layers which are separately formed in the advancing direction of electron beam, and form a plurality of electrostatic lenses along with corresponding electrodes of an electron gun upon applying voltages of differing potentials. The cathode ray tube has an accelerating electrode layer as an accelerating electrode which forms a main lens with a focusing electrode of the electron gun, and an electrode layer as a prefocusing electrode which forms a prefocusing lens with the focusing electrode and other electrodes, so that the electron beam is accelerated and focused by the electrode layer formed on the inner surface of a neck. The image quality realized on the screen can be improved, while reducing the length of the neck.