Water purifier
The disclosed water purifier comprises an outer wall, a RAW water inflow section that allows inflow of RAW water from outside said outer wall, a purifying section, an ultraviolet ray sterilizing section that has an ultraviolet ray source, a purified water outflow section that allows purified water that has been purified in said purifying section and sterilized in said ultraviolet ray sterilizing section to flow to the outside of said outer wall, a condition-detecting unit, and a control unit that controls generation of ultraviolet rays from said ultraviolet ray source according to the detection by said condition-detecting unit.
1. A water pathway under LED radiation comprising:
a water passage through which water passed, outside LED radiation being transmissible through the water passage to water therein;
a water inlet;
LEDs which are arranged to provide water in the water passage with the LED radiation through the water passage;
a water outlet for water exposed to the LED radiation out of the water passage, and
a cooling section which cools down the LEDs with water flowing in through the water inlet.
2. The water pathway according to claim 1 , wherein the cooling section cools down the LEDs with the very water exposed to the LEDs flowing in through the water inlet and flowing out through the water outlet.
3. The water pathway according to claim 1 , wherein the cooling section has a cooling passage through which the water exposed to the LED radiation generated by the LEDs is passed to cool down the LEDs, wherein the LEDs each have a light emitting portion and a heat dissipating portion, and wherein the cooling passage is arranged to run across the light emitting portion and the heat dissipating portion.
4. The water pathway according to claim 1 , further comprising: a drive section which drives the LEDs such that LED generation period and an LED non-generation/cooling period alternate.
5. The water pathway according to claim 1 , further comprising: a power supply section which is supplied with electric power from outside to drive the LEDs and which has a secondary battery charged with the supplied electric power; and a control section which normally supplies the LEDs with the electric power supplied from the outside and which, under a predetermined condition, even when electric power is being supplied from outside, supplies the LEDs with electric power from the secondary battery.