Light emitting diode lamp with light emitting diode module having improved heat dissipation

摘要

A light emitting diode (LED) lamp includes an LED module having a base plate (2) made of metals. The base plate (2) includes a first section (21) and a second section (22) isolated from each other and respectively connected to positive and negative terminals of a power source. A number of LED units (3) is mounted to and mechanically supported by the base plate (2). Each LED unit (3) includes a light emitting chip (31) mounted on a support frame (32) having positive and negative tabs (321,322) both having predetermined surface areas and soldered to the first (21) and second (22) sections of the base plate (2) whereby electrical connection is formed between the positive and negative tabs (321,322) of the LED unit (3) and the first (21) and second (22) sections of the base plate (2). The metal base plate (2) functions to provide a current path to the LED unit (3) and an effective measure to dissipate heat generated during the operation of the LED module. Thus, large current can be applied to the LED module for enhancing light emission efficiency thereof.