| 摘要 |
PROBLEM TO BE SOLVED: To facilitate assembly of a device and replacement of a cathode-ray tube by providing a lamp holder, having a pressure contact part for feeding high voltage to a Dumet wire which extends from an electrode of the cathode ray tube and a holding part for holding the cathode-ray tube and made of an electrical insulating material on a light source part. SOLUTION: A rectangular hole for storing a pressure contact part 5 and a holding part 6 for holding a cathode-ray tube 3 are provided on a lamp holder 4, a hole through which a lead wire 10 is to be inserted from the lamp holder 4 is provided, an opening part is provided between the pressure contact part 5 and the holding part 6, and a Dumet wire is pressure-inserted in the pressure contact part 5 simultaneously with the installation of the cathode-ray tube 3. The pressure contact part 5 is made of a conductive and elastic metallic material, a V-shaped groove cutout part is provided on one piece of the upper part, a longitudinal groove cutout part having a diameter smaller than that of the Dumet wire is provided on the bottom part of the cutout part, and the Dumet wire extending from the cathode-ray tube 3 is pressed down to and brought into contact with the longitudinal groove cutout part. Accordingly, high voltage is supplied to the cathode-ray tube 3. |
