| 摘要 |
<P>PROBLEM TO BE SOLVED: To louden buzzer sound without increasing current consumption by allowing a sound which is emitted form a sound producing hole which is prepared at the buzzer installation part of a portable indicator to have echo action by colliding with an echo board of the front face of the exterior of the sound producing hole and by emitting this echo sound in all sides of the echo board and to suppress the current consumption. <P>SOLUTION: A buzzer attaching part (5) for attaching a buzzer (4) is formed in the inside of a main body case (3) and the buzzer (4) which is connected to electronic components arranged on a substrate (6) is attached to the buzzer attaching part (5) and moreover a sound producing hole (7) for emitting the buzzer sound to the outside of the main body case (3) is prepared in the buzzer attaching part (5) and furthermore a echo board (8) with which the buzzer sound emitted from the sound producing hole (7) collides and echoes is prepared at the front face of the exterior of the sound producing hole (7) of the case (3). <P>COPYRIGHT: (C)2005,JPO&NCIPI |
