| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a bulb type lamp which is excellent in durability and is advantageous for miniaturization. <P>SOLUTION: The bulb type lamp includes an LED board (22) for mounting light-emitting diodes (20), a circuit board (26) for mounting a lighting-up circuit (24) lighting up the light-emitting diodes, and a base (18) for transmitting power to the circuit board by being connected with a socket. The circuit board is arranged by being separated with a heat radiation region (48) between the LED board and the circuit board on a base side against the LED board, and the lighting-up circuit includes a transformer (38) having a driving frequency of 80 kHz or more, and a smoothing capacitor (34) formed of laminated capacitors. <P>COPYRIGHT: (C)2013,JPO&INPIT |
