LED allocates glossy annularity light circuit adopt the PWM tune to glorify a technology, the colour temperature is stable, the power dissipation is low, life time is longer than fluorescent lamp, reliability is high, reality uses cost low, width voltage design, may satisfy the need being unlike a consumer, the holder for the wick and chimney of a kerosene lamp outer covering adopt ABS plastic fabrication, has the antistatic function, apply to IC industry especially wait for peculiar occasion, the LED luminescence light is a cold illuminant, is fit to be put into use to sensitive object of temperature observation.