| 摘要 |
An LED package (20), an LED driver including an FET (42), and a thermistor (30) are disposed on a substrate (10). A plurality of such LED packages (20) are disposed on the substrate (10), whereby an area (50) and an area (60) each determined by vertices corresponding to LED packages (20) are formed on the substrate (10). The thermistor (30) is disposed in the area (50), and the FET (42) is disposed in the area (60), which is outside of the area (50). The thermistor (30) detects a temperature in the area (50). Such a configuration allows the thermistor (30) to detect, in accordance with the temperature in the area (50), the temperature of heat transferred from the LED packages (20), without being affected by heat generated by the FET (42). This makes it possible to efficiently make temperature corrections to stabilize color temperature and luminance. |
