To provide a portable electronic device with a projector which electronic device improves a heat dissipation effect and reduces heat staying inside an enclosure.

The portable electronic device with the projector includes a thermoelectric conversion element 13 which applies to the portable electronic device and is set in contact with a heater 221a of a light source 221 of a projector unit 20 to convert heat energy into electric power, a charging means 150 which charges a battery with power generated by the thermoelectric conversion element 13, and heat dissipating members 14 and 1c which are in contact with the heater of the thermoelectric conversion element 13 and have an exposure surface exposing to the outside of the electronic device.