| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to expand a luminous area and increase a radiation angle without increasing any stress on an LED chip by expanding a resin case in a radial direction and providing reflection on its back. SOLUTION: An LED lamp 1 comprises a resin case 3 with its dimension expanded in a direction of the diameter D and roughly formed flat, with a light emitting face of the resin case 3 formed in a lens cut face 3a combined by a plurality of faces, and with a back of the resin case 3 provided with reflection and formed to a reflection face 3b. A surface light-source luminous face can be made by the arrangement of a plurality of the LED lamps without uneven luminance seen in the traditional LED lamp by expanding a luminous area and increasing the radiation angle without increasing any stress on the LED chip by expanding a resin case 3 in a radial direction and providing a reflection machining on its back. |
