Cake Decoration Screen On the Birthday Cake

摘要

In a typical birthday party, the congratulatory message is concealed in a cake ornament, the candle light is ignited, and after a certain time, the congratulatory message screen is automatically opened and the congratulation melody is released. The compression spring that was inserted into the injection of the product and tied with a string to prevent the compression spring from unfolding, and wrapped the congratulatory message screen on the upper part of the compression spring, and tied the string to prevent the compression spring from popping out when the candle was ignited. This unrolled and wound up screen mounted on the top of the compression spring moves up with the compression spring, causing the screen to be rolled down due to the gravity of the screen's lower screen rod to unfold and congratulation message unfolding at the same time. It devised a birthday message screen to life;Cake, decorative goods, melody, screen