The present invention relates to a built-in flash mechanism that will automatically
pop up when the illumination is insufficient or it is manually switched on. This
invention comprises a built-in flash, a one-way electromagnetic valve, a spring
that will switch the flash on when there is no magnetic force from the electromagnetic
valve, a shaft with two ends, where a first end is connected to the spring and
react to the motion of the spring and a second end is a clip used to withhold the
flash, a buckle clipped by the clip when the flash is shut, and a pusher used to
push the shaft when the flash is being pressed into the close status.
