LED ILLUMINATION MULTIPURPOSE DEVICE

PROBLEM TO BE SOLVED: To solve a problem wherein, since illumination used for work or the like must have capability of uniformly illuminating a relatively wide range with sufficient brightness, when it is lit by using a generator because of the need to continuously supply large power, it causes a problem of noise or exhaust gas; although LED illumination is attracting attention as a solution thereof, brightness is restricted when cost is regulated at a certain value; and when brightness is daringly increased, irregularity due to directivity is generated. SOLUTION: By using high-power LEDs different in emission angles, a nearby place is widely and brightly illuminated by increasing the emission angles, and illuminance is secured by the LEDs having small emission angles for a distant place. By arranging multiple LEDs on one light source plate according to this method, different beams are superposed on one another to increase brightness, and collide with one another to diffuse, whereby light can be made to reach the circumference, and as a result, a uniformly-bright multipurpose lamp applicable to various applications can be provided. COPYRIGHT: (C)2008,JPO&INPIT