HALF REFLECTION TYPE YELLOW EXTREMELY LOW ILLUMINANCE INCANDESCENT LAMP

PROBLEM TO BE SOLVED: To develop an electric bulb having two points of illuminance harmless to plant and illuminance having low insect attraction useful as an insect repellent since a yellow electric bulb has illuminance to harm general plants and is not all-purpose although the yellow electric bulb is conventionally used for a part of plants as an insect repellent by utilizing low insect attraction. SOLUTION: This incandescent lamp is provided with an aluminum reflection film between the maximum diameter part and the top part of a glass bulb and with a yellow coating between the maximum diameter part and the bottom. A vibration-proof filament is positioned in the reflection film, the top part is faced to an action part and illuminates the sky at a lower part to give illuminance of the middle of the sky.