| 摘要 |
PURPOSE: A front surface of vending machine is provided, which is capable of observing an inner side of the vending machine that a user utilizes and preventing light from being penetrated in the inner side when the user does not utilize the vending machine. CONSTITUTION: A glass(2) with a variable permeation index is installed at a front side of a vending machine(12) so that a user observes an inner side of the vending machine. A permeation index adjusting means is provided to adjust a permeation index of the glass(2). The permeation index adjusting means is implemented using an adjusting switch(10), a body sensor(8), and so on. |
