Discharge lamp and lighting equipment
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsMichihiro Tsuchihashi, Ryo Suzuki, Keiji Watanabe, Masato Saito
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Abstract
A discharge lamp comprises an arc tube for high pressure discharge and a discharge gap for discharging until restarting the arc tube. The discharge gap being electrically connected in parallel to the arc tube in an outer bulb. A normally opened temperature responsive switch means is connected in series to the discharge gap and a series of the discharge gap and the temperature responsive switch means is connected in parallel to the arc tube.
Claims24
A discharge lamp which comprises an arc tube for high pressure discharge and a discharge gap for discharging until restarting said arc tube and said discharge gap being electrically connected in parallel to said arc tube in an outer bulb wherein mercury is kept in said outer bulb and a phosphor is coated on an inner surface of said outer bulb.
A discharge lamp which comprises an arc tube for high pressure discharge and a discharge gap for discharging until restarting said arc tube and said discharge gap being electrically connected in series to an impedance device and in parallel to said arc tube in an outer bulb wherein a normally open temperature responsive switch means is connected in series to said discharge gap and a series of said discharge gap and said temperature responsive switch means is connected in parallel to said arc tube.
A discharge lamp which comprises an arc tube for high pressure discharge and a discharge gap for discharging until restarting said arc tube and said discharge gap being electrically connected in series to an impedance device and in parallel to said arc tube in an outer bulb wherein a radiative solid resistor is connected in series to said arc tube.
Dependencies are inferred from the claim text.