Low pressure mercury discharge lamp with thermostatic control of mercury
vapor pressure
    21.
    发明授权
    Low pressure mercury discharge lamp with thermostatic control of mercury vapor pressure 失效
    低压汞放电灯,具有恒温控制汞蒸汽压力

    公开(公告)号:US5274305A

    公开(公告)日:1993-12-28

    申请号:US802100

    申请日:1991-12-04

    CPC classification number: H01J61/28 H01J61/523 H01J61/541

    Abstract: The mercury vapor pressure in a low pressure mercury discharge lamp is thermostatically controlled. A low pressure mercury discharge lamp includes electrodes and a source of mercury vapor sealed in a lamp envelope. A heater and a thermal switching device are in thermal contact with the source of mercury vapor. The heater is energized when the source of mercury vapor is below a predetermined temperature during operation of the lamp. The heater is preferably a resistance heater electrically connected in series with one of the lamp electrodes. The thermal switching device can be a bimetal thermostatic switch. The source of mercury vapor is typically an amalgam selected to have an optimum mercury vapor pressure at the maximum operating temperature of the lamp. The heater and the thermal switching device can be located external to the lamp envelope or can be located within the lamp envelope. The lamp provides a relatively constant light output over a broad range of operating temperatures and different lamp orientations.

    Abstract translation: 低压汞放电灯中的汞蒸汽压力是恒温控制的。 低压汞放电灯包括密封在灯壳中的电极和汞蒸汽源。 加热器和热交换装置与汞蒸汽源热接触。 当灯的操作期间汞蒸气源低于预定温度时,加热器通电。 加热器优选地是与灯电极之一串联电连接的电阻加热器。 热开关装置可以是双金属恒温开关。 汞蒸气的来源通常是被选择为在灯的最大工作温度下具有最佳汞蒸汽压力的汞齐。 加热器和热开关装置可以位于灯泡外部,或者可以位于灯泡内。 该灯在宽范围的工作温度和不同的灯取向上提供相对恒定的光输出。

Patent Agency Ranking