MOVING LIGHT BY SHAPE MEMORY ALLOY MATERIAL

摘要

The present invention relates to a lamp device which changes a shape and a color when a lamp is turned on by combining a shape memory alloy spring and a thermochromic pigment with a light source of the lamp, wherein a material feature of the shape memory alloy spring is changed in accordance with a temperature. The lamp device uses the theory of action and reaction of the shape memory alloy spring and a general device spring to move a motion shape frame by levels of forces of the shape memory alloy spring and the general device spring by heat generated from the light source when the lamp is turned on or off. Therefore, the lamp device has a theory of repetitively changing an exterior shape of the lamp device. In addition, motion setup is possible in several directions through a variety of shape changes of the motion shape frame. The shape and the color of the lamp device are simultaneously changed by the thermochromic pigment when the lamp is turned on, wherein the color of the thermochromic pigment is changed in accordance with a temperature of the light source and the thermochromic pigment is coated on the outside of the lamp device.