ILLUMINATION FIXTURE

• Main Authors: YAMAMOTO SHOZO, MIZUKOSHI KAZUAKI, ISHII SHIGEYUKI, SUZUKI TOMOYOSHI
• Format: Patent
• Language: English
• Published: 14.12.1992
• Subjects: BLASTING; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-PORTABLE LIGHTING DEVICES; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

PURPOSE:To lessen the brightness error in each louver cell by constructing a single-base fluorescent lamp, which is to be mounted on each edge of a square lighting fixture body, with such a length as to meet the specific conditions based on the number of louver cells and the length of each edge of cell. CONSTITUTION:Louver cells 8A-8C in the number N for example three and whose length of each edge is represented by P are installed on each of the edges of a square body 9 of a lighting fixture, and a single-base fluorescent lamp 5 is mounted in a lamp socket 4 at the cell 8A of four corners of each edge. The brightness difference of the louver cell at each edge can be lessened only through sacrificing the brightness to a certain degree with the cell 8A selecting the length of the lamp 5 so as to meet the condition of Eq. I.