| 摘要 |
A sprinkler head having an auto drip valve within is provided, which is prevented from being frozen and damaged during the wintertime by using the auto drip valve mounted inside the sprinkler head and discharging fire-fighting water after a fire fighting naturally and previously. A sprinkler head comprises: a hollowed casing, building up a sprinkler head body; a thermo-bulb, arranged inside the casing in a direction of an outlet; a deflector(30), arranged in a lower end of the thermo-bulb so as to support the latter; an auto drip valve, located over the thermo-bulb so as to be supported by the latter, and seated inside the casing so as to be supplied with natural pressure after a fire fighting so as to discharge left fire-fighting water by opening an inside outlet of the casing, wherein the auto drip valve closes the inside outlet when it is pressurized by compressed air; and a hanging end lug, formed along the inside of the casing inside the latter.
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