A non-motorized object hanger for use with a swing having a seat hanger tube supported from a hub and a seat coupled to the seat hanger tube. The backlight module includes an LED chip, and a heat sink; the LED chip and a circuit thereof are directly arranged on the heat sink. Particular embodiments of the invention employ a lightweight, flexible substrate to support the light elements. In one embodiment of the invention, the first and second fabrics are first and second Virtual Storage Array Networks respectively. When the input voltage becomes lower than a second threshold voltage which is lower than the first threshold voltage, the step-up voltage device sets the output voltage to a voltage equal to the input voltage.