TEMPERATURE DETECTOR AND PROJECTOR USING THE TEMPERATURE DETECTOR

摘要

A temperature detector and a projector using the temperature detector are provided. The temperature detector is configured to judge the operating temperature of the lamp in the projector. The temperature detector includes a charging/discharging circuit and a temperature judgment unit. The charging/discharging circuit receives a system voltage and provides a temperature voltage. The temperature judgment unit receives the temperature voltage and judges whether or not the operating temperature of the lamp falls in a first temperature range according to the temperature voltage so as to correspondingly output a temperature judgment signal. The scheme of using the temperature detector can determine a heat-dissipation time required by the lamp to advance the accomplishment rate of re-lighting and avoid affecting the lifetime of the lamp due to frequent lighting operation.

主权项

1. A temperature detector, configured to judge an operating temperature of a lamp of a projector and comprising a charging and discharging circuit and a temperature judgment unit, wherein the charging and discharging circuit receives a system voltage and provides a temperature voltage; and the temperature judgment unit receives the temperature voltage and judges whether or not the operating temperature of the lamp falls in a first temperature range according to the temperature voltage so as to correspondingly output a temperature judgment signal.