| 摘要 |
A heating unit having a heating function is provided in the present invention. The heating unit comprises a lighting device, a case containing the lighting device, a heating device formed on the case for heating the case, a heat sensor having a preset value and electrically connected to the heating device for detecting a thermal parameter of the lighting device, and a timer having a preset period and electrically connected to the heating device, wherein the heating device is shut off by the heat sensor when the thermal parameter is a temperature and higher than the preset value or by the timer when the thermal parameter is a heating time of the heating device and longer than the preset period.
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