| 摘要 |
A straight-tube LED lamp (1) being a lamp that is equipped with an elongated housing (20) that has a light diffusion section and multiple LEDs that are arranged inside the housing (20) along the length direction of the housing (20), wherein when a half-value width of a luminance distribution obtained when light from each of the multiple LEDs has passed through the outermost shell of the straight-tube LED lamp (1) is denoted as y (mm) and an interval between the luminance centers of adjacent LEDs is denoted as x (mm), a relationship expressed as y >= 1.09x is satisfied. |
