High-pressure discharge lamp and the arc tube

To provide a high pressure discharge lamp capable of suppressing breakage of the container in the sealing unit. A high-pressure discharge lamp of the present invention comprises an arc tube 1 in which a pair of electrode bars 5a inside the glass container 1a, 6a are arranged. The arc tube 1 has a light emitting portion 2 of the discharge space 11 formed therein, and a sealing portion 3 and 4 provided continuously to the light-emitting unit 2. A pair of electrode bars 5a, 6a are base end is embedded in the sealing portions 3 and 4, the tip protrudes into the discharge space 11 of the light emitting portion 2, is base end disposed in the sealing portions 3 and 4 They are joined in a state superposed on a metal foil 7,8. Furthermore, the site present in the sealing portion 3 of the electrode bar 5a, composed cover foil 12 of a metal formed in a C-shaped cross section have been extrapolated from the light emitting portion 2 of the covering foil 12 far side edge 12b are arranged in a posture retreats emitting portion 2 closer than the side edge 7a close to the light emitting portion of the metal foil 7. .Field