Abstract: A rotor device capable of dissipating heat and resisting foreign objects includes a hub and a shield case. The hub has a closed wall and a hub wall connecting with the closed wall and the closed wall at least has a hub hole. The shield case is mounted in the hub and has an upper wall neighboring the closed wall and a circumferential wall connecting with the upper wall. The upper wall at least has a through hole offsetting the hub hole to allow the fluid passing through the hub hole and the through hole for performing heat dissipation and preventing the foreign objects from falling into the shield case via the hub hole and the through hole.

Abstract: A heat dissipating device in a fan includes a fan blade assembly with a fan blade hub, a fan base attached to the fan blade assembly and a motor unit attached to the fan base. The fan base has at least a pillow part and is formed with an air opening and a flow passage corresponding to the fan blade hub such that part of fluid driven by the fan can be guided into the fan blade hub to cool the motor unit received therein so as to prolong life span of the entire fan.

Abstract: A radiation device of a fan includes a fan blade assembly, a fan base attached to the fan blade assembly and a motor unit attached to the fan base. The fan blade assembly has a fan blade hub with at least a slant at the circumference thereof and an air opening and a flow passage being formed with the slant corresponding to the fan base such that part of fluid driven by the fan can be guided into the fan blade hub to cool the motor unit so as to prolong life span of the entire fan.

Abstract: A rotor device capable of dissipating heat and resisting foreign objects includes a hub and a shield case. The hub has a closed wall and a hub wall connecting with the closed wall and the closed wall at least has a hub hole. The shield case is mounted in the hub and has an upper wall neighboring the closed wall and a circumferential wall connecting with the upper wall. The upper wall at least has a through hole offsetting the hub hole to allow the fluid passing through the hub hole and the through hole for performing heat dissipation and preventing the foreign objects from falling into the shield case via the hub hole and the through hole.

Abstract: A masked identification code registration system is designed to allow a user to gain an access to a content provider via a telecommunication system. The masked identification code registration system a telecommunication user database, a registration system, and a masked identification code generator by which an identification code of the telecommunication user database 8 is converted into a masked identification code, so as to enable the user to attain a masked registration in the content provider.