| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide SPD where a situation of an SPD function can securely be displayed. <P>SOLUTION: In SPD 1, an SPD circuit 3 constituted of a plurality of types of components is stored in a thin case 2. A drawing terminal 30 for drawing out an operation display means 20 displaying the situation of the SPD function to outside the case is installed in one peripheral wall part 2c of the case 2. The operation display means 20 is a light emitting element 21 which is the same as an operation display light emitting diode 6 stored in the case 2 and is provided with a light 22 of a transparent container incorporating the light emitting element 21 and two lead lines 23 extended from the light 22. The drawing terminals 30 are a pair of DC power terminals. When the lead lines 23 are connected to them, the light emitting element 21 lights in the same way as the light emitting diode 6, and the SPD function performs normal display. <P>COPYRIGHT: (C)2008,JPO&INPIT |
