摘要:
It is an object of the present invention to assuredly prevent occurrence of minute cracks in a seal portion (6) of a lamp (A) for improvement of the pressure resistance and service life of the lamp (A). To achieve the object, there is provided a seal structure of a lamp (A) including: (a) a lamp envelope (5) having a light emitting tube (1) and a seal portion (6); (b) a metal foil (3) embedded in the seal portion (6) of the lamp envelope (5); (c) a light emitting element (2) attached to one of opposite ends of the metal foil (3) and disposed in the light emitting tube (1); and (d) an outer lead rod (4) attached to the other end of the metal foil (3) and led out of the seal portion (6), the seal structure comprising a separable layer (8) interposed between the seal portion (6) and a portion (7) of the light emitting element (2) embedded in the seal portion (6).
摘要:
A direct current discharge lamp includes: a bulb portion 1a containing therein an anode 2b and a cathode 2a; a first seal portion 5 outwardly extending from the bulb portion 1a on the anode side; a second seal portion 4 outwardly extending from the bulb portion 1a on the cathode side; a pair of feeder elements 3 respectively inserted through the first and second seal portions 5 and 4 for feeding electricity to the anode 2b and cathode 2a; and an extended tube portion 6 interconnecting the bulb portion 1a and the first seal portion 5.
摘要:
A direct current discharge lamp includes: a bulb portion 1a containing therein an anode 2b and a cathode 2a; a first seal portion 5 outwardly extending from the bulb portion 1a on the anode side; a second seal portion 4 outwardly extending from the bulb portion 1a on the cathode side; a pair of feeder elements 3 respectively inserted through the first and second seal portions 5 and 4 for feeding electricity to the anode 2b and cathode 2a; and an extended tube portion 6 interconnecting the bulb portion 1a and the first seal portion 5.
摘要:
A metal halide lamp for use with a reflector includes: a pair of electrodes with a spacing therebetween, an envelop enclosing the pair of electrodes, and at least one metal halide other than a mercury halide which is encapsulated in the envelop in an amount of from 0.04 to 0.3 mg/cc.