| 摘要 |
Provided is an automatic faucet using an electric wave sensor, the automatic faucet having a simple configuration and not erroneously stopping water flow. An automatic faucet (1) provided with a faucet body (1A), a water pipe (20), an electric wave sensor (40), and a control unit (50) which controls the discharge and stop of wash water. The automatic faucet (1) is also provided with an electric wave passage space through which an electric wave passes, an electric wave emission opening (27) from which the electric wave is emitted to the outside, and a directivity determination means which determines the directivity of the electric wave emitted from the electric wave emission opening (27). The directivity determination means is configured so that, while the water is stopped, the directivity determination means causes the electric wave, which is emitted from the electric wave emission opening (27), to be directed along the discharge direction (A) of the wash water discharged from a water discharge opening (26), and also so that, while the water is discharged, the directivity determination means causes the electric wave emitted from a portion of the electric wave emission opening (27), the portion being disposed further toward the user side (C) than the water discharge opening (26), to interfere with a side surface of the flow (W) of the wash water, the side surface being located on the user side (C). |
