| 摘要 |
PROBLEM TO BE SOLVED: To realize a high luminous intensity per unit length by preventing the temp. rise of a light emitting diode array light source to increase the operating current. SOLUTION: Current limiting resistors 10 connected in series to a number of series connected light emitting diode chips are removed from a printed board of this light source. Instead of them, one or more current limiting resistors 10 are connected to a set 21 which mounts this light source, so as to be in series to all the chips 12. |
