METHOD OF MANUFACTURING LED LINE LAMP, LED PROTECTION TUBE FOR LED LINE LAMP, AND LED LINE LAMP

摘要

PROBLEM TO BE SOLVED: To make an LED line lamp lightweight and long in lifetime while providing sufficient heat radiation characteristics, and to improve the productivity.SOLUTION: A heat radiation part 2a is made of a first heat-conductive resin, and a diffusion part 2b is made of a resin which transmits and diffuses irradiation light of an LED element 4b. An outer cylinder part 2 comprising the heat radiation part 2a and diffusion part 2b is molded in one body. Mutually facing guide parts 2b-1, 2b-1' provided at both front and rear ends of the diffusion part 2b are formed in a length direction respectively to be sectioned in a channel shape including the heat radiation part 2a as one side, and an LED substrate 4 is slid and inserted so as to have both front and rear ends held at the channel-sectioned part. A grooved part 2a-2 is formed in the length direction at a substantially center part of the heat radiation part 2a. A second heat-conductive resin 5 is charged between the opposite surface 2a-1 of the heat radiation part 2a including the grooved part 2a-2, and the side of a substrate part 4a where the LED element 4b is not mounted.