| 摘要 |
PROBLEM TO BE SOLVED: To surely transmit voice from a speaker to a game player.SOLUTION: A receiving tray is disposed in the lower part of a front of a slot machine. The speaker is disposed behind the receiving tray. The speaker is configured to turn to four directions, forward, toward the left, upward, and toward the right. The back wall of the receiving tray is provided with first to fourth detecting sensors for detecting an obstacle in front of the speaker turned to the respective directions. In the slot machine, the speaker direction adjustment processing is conducted to turn the speaker to the direction where any obstacle does not exist in front. Thus, the voice from the speaker can be surely transmitted to the game player. |
