electronic price display device based on indoor light energy harvesting

摘要

The present invention is a technology that harvests the current in micro units generated through the indoor light while the indoor light is on, and uses the harvested power as an energy source for a content change operation event of an electronic price display unit. The present invention relates to a technology for accumulating current in a supercapacitor with micro-units generated through indoor light, and performing a content change manipulation event with the stored power when a content change manipulation event occurs later in the electronic price display unit. In particular, it relates to a technology that enables testing of a device even before sufficient power is stored in a super capacitor after installation of the device as it is configured to accommodate a separate test battery. According to the present invention, when a voltage detection member, a leakage current blocking control member, and one or more capacitor switch members are provided, the power harvested to the super capacitor leaks when no current from the solar cell member is generated when the room is turned off. There is an advantage that can prevent it from becoming.