| 摘要 |
In a lighting device 10, a discharge tube 15 includes a glass tube 34, an electrode 34a, an outer lead 35 and a ferrule 36. The electrode 34a is arranged inside the glass tube 34. The outer lead 35 makes electrical connection between the electrode 34a and an external device. The ferrule 36 has a drum shape so as to be fitted onto the glass tube 34 and makes electrical connection between the outer lead 35 and the terminal 14. The ferrule 36 includes a main body 37, a connecting part 40 and a holding part 50. The main body 37 is fitted onto the glass tube 34. The connecting part 40 extends from the main body 37 and is electrically connected to the outer lead 35. The holding part 50 is separately provided from the connecting part 40 and extends from the main body 37. The holding part 50 holds the outer lead 35 and a relative position of the ferrule 36 to the glass tube 34 is defined with the holding part 50. |
