| 摘要 |
PURPOSE:To heat each linear bulb uniformly without thermal influence of the heating means for adjoining linear bulbs by making the interval of double heads to be equal while specifying the pitch between the heads in particular range. CONSTITUTION:The interval l1 between a pair of heads 11a, 11b fixed at many positions or 24 positions, for example, on the circumference of a carrying member or turn table 10 is set in such range as the bulb held by said head is scarcely influenced by the heat from adjoining heaters or in the range of 250-500mm.. While the interval of the position or the interval l2 between the centers of the heads 11a, 11b of adjoining positions is set to be same or wider than the interval l1. |
