| 摘要 |
PROBLEM TO BE SOLVED: To provide a light source device which is easily manufactured and obtains desired light distribution characteristics.SOLUTION: A lighting device includes: a cover; a housing 12; a mouth piece 13; and an LED module 14. The cover comprises: a cover upper part 11a; and a cover lower part 11b. The cover upper part 11a includes: a cover upper part transmission part 11c which transmits light emitted from the LED module 14 to the outer side; and a cover upper part diffusion/transmission part 11d which diffuses and transmits the light emitted from the LED module 14 to the outer side. The cover upper part transmission part 11c is disposed at a substantially center part of the cover upper part 11a. The cover upper part diffusion/transmission part 11d is disposed around the cover upper part transmission part 11c. At least a part of the cover lower part 11b transmits the light reflected or refracted in the cover to the outer side. |
