| 摘要 |
A light fastness and weather resistance testing apparatus which has a testing tank, a hollow shaft rotatably mounted in the center of the testing tank, a sample frame mounted on the hollow shaft and extending beyond one end of said hollow shaft, a motor connected to the shaft for rotating the shaft, a tube of electrically conductive metal extending through the hollow shaft and having one end at the space within the sample frame and a supply of cooling liquid connected to the other end of the tube for supplying a cooling liquid to the tube. A xenon lamp is in the space within the sample frame and has a cooling device mounted thereon constituted by a single wall cylindrical tube of an ultraviolet transmissive glass around the lamp and spaced therefrom, the low voltage end of the lamp being mounted on the one end of the metal tube and having the low voltage terminal thereof electrically connected to the metal tube, the other end of the glass tube having a drainage tube connected thereto. A high voltage power terminal is connected to the high voltage terminal of the lamp, and a voltage supply is connected between said other end of the metal tube and the high voltage lamp terminal and includes a connecting wire extending outside the sample frame.
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