MR16 type LED lamp for replacing MR16 type low-voltage halogen lamp

The utility model relates to an LED lamp, in particular to an MR16 type LED lamp for replacing an MR16 type low-voltage halogen lamp, which mainly comprise an LED light source, a lens fixed on the LED light source, a cast aluminium sectional material used for bearing the LED light source, an insulation bracket, a shell and a constant-current voltage-reduction circuit, wherein the constant-current voltage-reduction circuit comprises an input end and an output end, the input end is connected with a 10-20V AC power source, and the output end is connected with the LED light source. Compared with the prior art, the utility model drives a light emitting diode (LED) to give out light by the constant-current voltage-reduction circuit, and then through lens condensation output, heat generated by the light emitting diode is diffused via the cast aluminium sectional material. Compared with the MR16 type low-voltage halogen lamp, the utility model has the advantages of high brightness, long service life, low energy consu