Patent ID: 7871181

Claim:
An improved color changeable tube light, comprising: a core line being formed of a strip with predetermined length produced by extrusion molding of white opaque flexible plastic, wherein four copper stranded wires are provided vertically in interval in one side portion of the cross section of the strip, two longitudinal through holes are provided at the middle portion of the cross section of the strip, the copper stranded wire is of the same length as that of the longitudinal through hole, a slot is formed longitudinally on the upper side wall of the longitudinal through hole, a plurality of transversal through-hole are arranged at predetermined even interval along the longitudinal length of the strip, each of the transversal through-hole parallel to the copper stranded wire is provided in the central of the strip, a reverse trapezoidal groove is provided on the upper side wall of the strip; a plurality of LEDs being connected in series with each other and with at least one current limiting resistor, the two ends of the string of the serially connected LEDs being electrically connected to the copper stranded wires in the core line; a diffuser being a milky translucent object with the same length as the core line and with predetermined height and width and provided above the plurality of LEDs for scattering the light beams of the LED; a cladding layer with the same length as the core line, the cladding layer being formed of white opaque flexible plastic by extrusion molding for wrapping the core line, the diffuser and the plurality of LEDs, the cladding layer being a semicircular surface simulating the tube light emitting surface of neon light, the cladding layer being formed integrally with the diffuser into one piece; wherein a unit is formed by disposing a red LED, a green LED and a blue LED of the plurality of LEDs into a fixing means, a plurality of the units are connected in series and disposed in the plurality of transversal through-hole of the core line respectively.