| 摘要 |
PURPOSE:To provide a high pressure discharge lamp producing uniform luminous intensity distribution and giving good appearance, by arranging the illuminating tube in the right direction to the axis of the discharge lamp and disposing a reflecting plate between the illuminating tube and the leads. CONSTITUTION:The illuminating tube 2 is supported by the supporting frame 27 virtually bent into U shape, so that the axis of the illuminating tube is in the direction perpendicular to the axis of the lamp running from the base 11 to the end of the outer tube 1. The stem leads 7a-7c are hermetically sealed through the external tube 1. Between the stem leads 7a-7c and the illuminating tube 2, there is provided supported by the supporting frame 27 a reflecting plate 28 being convex toward the illuminating tube 2. Accordingly, no shade of the supporting frame 27 is projected on the external tube 1 and the shades of other members are cancelled by the reflected light from the reflecting plate 28 and so uniform luminous intensity distribution can be provided. |
