Abstract: A cooling fan structure of power supply includes a fan frame base face securable to a case of the power supply. The cooling fan structure is characterized in that the shaft of the cooling fan of the cooling fan structure is not perpendicular to the fan frame base face and an angle is contained between the shaft and the fan frame base face, whereby the cooling fan serves to obliquely blow cold air to the electronic components and radiating fins arranged inside the power supply. In this case, the cold air will not tarry in the power supply in which the electronic components and radiating fins are densely arranged. Accordingly, hot air can be more smoothly and quickly guided to outer side of the case of the power supply to enhance the cooling effect and effectively lower the temperature in the power supply.

Abstract: A tiltable/adjustable golf practice device includes multiple height adjusters mounted on the respective corners of the teeing ground. By means of lifting or lowering the height adjusters, the teeing ground can be tilted to simulate the landform of a real golf course in accordance with the requirement of a user in practice. The tiltable/adjustable golf practice device is free from any electronic control or hydraulic device so that the manufacturing cost is greatly lowered. Also, a user can freely remove the tiltable/adjustable golf practice device so that the application of the tiltable/adjustable golf practice device is facilitated.

Abstract: A tiltable/adjustable golf practice device includes multiple height adjusters mounted on the respective corners of the teeing ground. By means of lifting or lowering the height adjusters, the teeing ground can be tilted to simulate the landform of a real golf course in accordance with the requirement of a user in practice. The tiltable/adjustable golf practice device is free from any electronic control or hydraulic device so that the manufacturing cost is greatly lowered. Also, a user can freely remove the tiltable/adjustable golf practice device so that the application of the tiltable/adjustable golf practice device is facilitated.