| 摘要 |
PROBLEM TO BE SOLVED: To solve problems encountered when an LED is employed in place of a fluorescent tube.SOLUTION: A post-fitting type lamp is disclosed. The post-fitting type lamp includes a plurality of light sources, and a one-dimensional linear batwing lens. The one-dimensional linear batwing lens performs beam formation for outgoing light of at least two light sources of the plurality of light sources. The post-fitting type lamp includes not only the plurality of light sources, but also a housing attached to the one-dimensional linear batwing lens. An end cap including an electric connector for the arrangement in equipment like existing conventional fluorescent tube equipment arranged in a storage structure such as a freezing case is then attached to a housing-lens connection body. Alternatively, a plurality of light sources, a one-dimensional linear batwing lens, and a housing are configured together with a power source as independent post-fitting equipment so as to be used in a closed storage structure such as a freezing case, and conventional fluorescent equipment is replaced with post-fitting equipment here. |
