Patent ID: 10655836

Abstract:
An LED lamp includes: a lamp shell; a passive heat dissipating element having a heat sink, wherein the heat sink comprises fins and a base; a power source; a light emitting surface connected to the heat sink of the passive heat dissipating element and comprising LED chips; a first heat dissipating channel formed in a first chamber of the lamp shell; a second heat dissipating channel formed in the heat sink and between the fins and the base of the heat sink; and a lamp cover connected with the heat sink and having a light output surface, an end surface, an inner reflecting surface disposed inside the light output surface of the lamp cover and an outer reflecting surface disposed in the outer circle of the array of the LED chips; wherein a relationship as follows is satisfied between the LED chips and the inner and outer reflecting surface: (A1/N1):(A2/N2)=0.4˜1; where A1 and A2 respectively represent area of the inner and outer reflecting surface; where N1 and N2 respectively represent number of the innermost and outermost of the array of LED chips of the light emitting surface.