5. Heat release design
(1)Case Temperature (Tcase) measurement method
We define Case Temperature (Tcase) that is the temperature of
φ
30mm of the cap center of LLE.
Some characteristics of LLE depend on Tcase.
And, tc defined by EN 62031 (rated maximum temperature) is evaluated the temperature at the
measurement area. In the LLE,
1100 lm type
tc=65
℃
,
1600 lm type
tc=75
℃
,
Tcase shall be measured with a thermocouple. By making a hole etc., avoid the attachment part with
a thermocouple being apart from heat sink.
Tcase measurement point(
φ
30)