Patent ID: 8562179

Claim:
A lamp comprising: a housing, having a compartment with an opening; a fan, disposed inside the compartment of the housing, and having an impeller mounted inside a frame, with a first air-guiding channel formed between a peripheral surface of the frame and an inner peripheral surface of the housing; a heat sink, coupled to the fan and having a first surface and a second surface, with the first surface facing the impeller and with an outer periphery of the heat sink being spaced from an inner peripheral surface of the frame to form a second air-guiding channel; a light emitting element, disposed on the second surface of the heat sink, wherein the frame of the fan has a first air passage and a second air passage communicated with each other, with the impeller mounted between the first air passage and the second air passage, with the first air passage disposed inside the compartment of the housing, with the heat sink mounted across the second air passage, and with the second air passage being arranged out of the opening of the housing.