| 摘要 |
A ball pen including a light emitting device is provided. In the ball pen, a light emitting diode (LED) is enclosed in a figurine attached to the end of the ball pen and two electric wires are connected to the LED. One of the wires is connected to one electrode of a battery and the other is in contact with a cone-shaped spring positioned at the lower portion of the battery. The cone of the cone-shaped spring is pushed up by an ink cartridge, making the cone-shaped spring come into contact with one electrode of the battery, so that an electric current flows through a circuit including the battery and the LED, thereby illuminating the LED. A stick is firmly engaged with the push button member and thus, the push button member is pushed to make inclined surfaces of a cylinder-rotation sawtooth and an inclined protruding stopper, which are formed in a rotational cylinder, glide along the inclined surfaces of the cylinder-rotation side protrusions, thereby rotating the rotational cylinder. Whenever the rotational cylinder is rotated, the point of the ball pen sticks out or goes back into the tip hole of the ball pen. According to the ball pen including a light emitting device, the light emitting device can be lit not only when the point of the ball pen is pressed on paper, but also when the push button member is pushed to use or not to use the ball pen. Therefore, the ball pen including the light emitting device can attract the interest of a user.
|
