| 摘要 |
PROBLEM TO BE SOLVED: To improve light use efficiency by making parallel projection light of an LED lamp and making an emission angle smaller, and also, to obtain enough luminosity and make easy heat countermeasure in a luminaire mounting LED lamps with high density. SOLUTION: The LED lamp 1 is structured by a reflecting body 3 containing an LED chip 2 inside. The reflecting body 3 is spindle shaped getting bigger toward vertical direction of the light axis, and works same as a reflecting mirror. Light Ba and light Bb outgoing from the LED chip 2 are not reflected at the reflecting body 3 and exit out of the LED chip 2, but light Bc is comes close to parallel with a light axis O by reflection with the reflecting body 3. Reflection is operated many times by making longer the reflecting body on the light axis, so that, outgoing light can be more paralleled with the number of reflection times. |
