| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lighting device improved in heat radiation, the lighting device having a light emitting element as a light source. <P>SOLUTION: In the lighting device, after a laminated body 12 is formed by laminating a plurality of ring-shaped plates 11 in a back and forth direction through the spacers 14, a cover section 5 is formed by covering up a front end opening of the laminated body 12 by preparing a disk-shaped covering body 13 in front of a ring-shaped plate 11a located at the uppermost front of the laminated body 12 through spacers 14. Thus, layer-like gaps 15 are formed throughout a whole range of the cover section 5 in a circumferential direction, air can be circulated between the inside and the outside of the cover section 5, and heat of the light source section 2 (LEDs 4) can be efficiently and uniformly released outside the cover section 5. <P>COPYRIGHT: (C)2012,JPO&INPIT |
