An LED lamp has: an LED with a pair of terminals; a holder to which the LED is
attached, the holder being of insulating material; and a radiation unit that has
two metallic radiation plates that are attached to the holder while surrounding
the holder and being insulated from each other. Each of the radiation plates has
a contact portion that contacts the pair of terminals of the LED being attached
to the holder and a power receiving terminals for power supplied to the LED.