Semiconductor lamp and light bulb type LED lamp

An LED lamp comprising:

• a light transmitting envelope having a plurality of fluorescent elements containing a phosphor;
• a light unit having a circuit board and at least one light emitting diode (LED/LEDs) mounted on the circuit board for emitting a short wavelength light for directing to the fluorescent elements to convert the short wavelength light into visible light;
• wherein the fluorescent elements comprise one of protrusions and grooves;
• and
• wherein the light unit is accommodated in an inner cavity of the light transmitting envelope.

A light bulb type LED lamp comprising:

• a light transmitting globe having a plurality of the fluorescent elements containing a phosphor;
• a light unit having a circuit board and at least one light emitting diode (LED/LEDs) mounted on the circuit board for emitting a short wavelength light for directing to the fluorescent elements to convert the short wavelength light into visible light, wherein the fluorescent elements comprise one of protrusions and grooves;
• a lighting circuit to drive the LED/LEDs;
• and
• a light bulb type power supply connector;
• thereby the LED lamp can replace an incandescent light bulb.