| 摘要 |
PURPOSE: A non-power ventilator is provided to rapidly perform the separation and repair of an automatic temperature controller. CONSTITUTION: A non-power ventilator comprises a fixture(21). An exhaust fan(10) is composed on the top of the fixture. The fixture is opened and closed with an automatic temperature controller(40) which is located on the lower part of the fixture. The fixture is combined in a horizontal supporting bar(2) of a greenhouse(1). The fixture is formed in order to be inserted in the external diameter of a supporting total body including a protrusion. A projection bar is formed in one side of the protrusion. A pass groove in which the projection bar can pass through is formed in the fixture.
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