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    • 10. 发明公开
    • Low-pressure mercury discharge lamp
    • 低压汞放电灯
    • EP0658921A1
    • 1995-06-21
    • EP94203567.6
    • 1994-12-08
    • PHILIPS ELECTRONICS N.V.
    • de Hair, Johannes Theodorus WilhelmusKastelein, Lukas
    • H01J61/94H05B41/392H05B41/29
    • H01J61/95H01J61/94H05B41/282H05B41/3921Y02B20/183
    • The invention relates to a low-pressure mercury discharge lamp comprising

      a first lamp vessel (La1) provided with a first electrode (E11), with a filling comprising mercury and rare gas, and with a first luminescent layer which radiates white light of a first colour temperature during lamp operation,
      a second lamp vessel (La2) provided with a second electrode (E12), with a filling comprising mercury and rare gas, and with a second luminescent layer which radiates white light of a second colour temperature different from the first during lamp operation,
      means I for generating a first current through the first lamp vessel and a second current through the second lamp vessel,
      means II for adjusting the ratio between the effective value of the first current and the effective value of the second current.

      According to the invention, the low-pressure mercury discharge lamp is characterized in that the first and the second lamp vessel are interconnected by means of a connection (V) which allows the filling to pass and together enclose a discharge space, in that the first current and the second current are high-frequency currents of changing polarity, and in that the discharge space contains only one further electrode (E13).
      It is achieved thereby that the colour temperature of the light radiated by the lamp can be adjusted over a comparatively wide range, while the lamp is of a simple construction and has a comparatively high luminous efficacy.
    • 低压汞放电灯本发明涉及一种低压汞放电灯,该低压汞放电灯包括具有第一电极(E11)和第一发光层的第一灯容器(La1),第一电极(E11)包括汞和稀有气体,第一发光层辐射第一 具有包含水银和稀有气体的填充物的第二电极(E12)的第二灯泡(La2),以及发射与第一色温不同的第二色温的白光的第二发光层 在灯操作期间,用于产生通过第一灯管的第一电流和通过第二灯管的第二电流的装置I,用于调节第一电流的有效值和第二电流的有效值之间的比率的装置II。 根据本发明,低压汞放电灯的特征在于,第一和第二灯管通过允许填充物通过并且一起封闭放电空间的连接(V)相互连接,其中第一和第二灯管 电流和第二电流是极性改变的高频电流,并且放电空间仅包含一个另外的电极(E13)。 由此实现了灯的辐射光的色温可以在较宽的范围内调节,而灯的结构简单并且具有相对高的发光效率。