| abstract |
Provided is a new mercury-free metal halide lamp for a vehicle that has a high color temperature and a high luminous flux even when it is lit with a power of 25 W. The present invention relates to a mercury-free metal halide lamp for a vehicle that is lit with a power of 25 W during stable lighting, and includes an airtight container 1 having a light emitting portion 11 having a discharge space 111 therein, and a discharge space 111. And a rare gas containing xenon, a metal halide 2 containing an indium halide enclosed in the electrode, and an electrode 32 having a tip portion opposed to the discharge space 111. The volume is 16 to 22 mm 3 , where the mole number of indium [mol] is Q and the pressure of xenon [atm] is P, 0.97 × 10 −7 ≦ Q ≦ 2.9 × 10 −7 , and It satisfies 8.5 ≦ P ≦ 13. [Selection] Figure 1 |