Crack control improved high-intensity discharge lamp and a method of manufacturing the same

摘要

And can withstand thermal and mechanical stresses higher due to repeated SOLVED lamp start, higher reliability, and to provide an HID lamp with an electrode seal structure with a long product life. [SOLUTION] High intensity discharge lamp includes a luminous tube to seal the emission chamber 2. And a filling gas, the arc tube to the end seal portion 3 of the at least one light emitting chamber 2. Seal section 3, to seal the electrode assembly. Electrode assembly includes an electrical conduction foil 6 4 electrode, and the introduction of line 5,. Electrode 4 extends to the light emitting chamber 2. Extends outwardly from the seal portion 3, lead-in wires 5 makes electrical contact with the power supply. In addition to connecting the electrodes 4 and 5 lead-in wire, electrical conductive foil 6, to form a gas-tight electrical connection through the sealing portion of the arc tube 3. In one area of ​​the unevenness provided on the surface between the emission chamber 2 and the foil 6, the shape and size of the cracks of the wall 7 of the seal 3, which surrounds the electrode 4 is controlled at least in the electrode 4. Electrode 4 has a predetermined position in a predetermined shape, the artificial irregularities of at least one surface. First, the electrode 4, a combination of lead-in wire 5 and the sealing foil 6, to form an electrode assembly. Is inserted into the light emitting chamber 2 the electrode assembly, closed with a sealing material emission chamber 2, to be enclosed in the arc chamber 2 the electrode assembly. The uneven region is formed between the emission chamber 2 and the foil 6 the electrode surface. After assembling the electrode assembly, artificial irregular region of 4 surface electrode may be provided. [Selection] Figure Figure 1