A radiating fin with a bent radiating portion and an electrothermal oil heater using the same are provided. The radiating fin comprises a main body with an oil guide groove formed therein, connecting sleeves extending in a horizontal direction being provided at an upper end and a lower end of the main body; a bent radiating portion is formed within a region, a certain distance away from the middle, of an edge of at least one end of the main body; and an upper end and a lower end of the bent radiating portion are located in different vertical planes, or the upper end and the lower end of the bent radiating portion are located in a same vertical plane, and at least one portion between the upper end and the lower end is bent to form a side-raised structure. Compared with the prior art, the radiating fin with a bent radiating portion provided in the present invention has the following advantages: by forming a bent radiating portion within a region, a certain distance from the middle, of an edge of any end of the radiating fin, when a plurality of the radiating fins are connected to each other, a combined radial and convective radiating way can be realized and meanwhile the transverse radiation and the longitudinal radiation of the radiator are strengthened.

Disclosed are various space heater base brackets. A first thermal transfer component has a base bracket hole along its bottom edge. A second thermal transfer component has a locking hole along its bottom edge. A base bracket is between the first thermal transfer component and the second thermal transfer component. The base bracket has a tab that protrudes into the base bracket hole. The base bracket also has a locking mechanism corresponding to the locking hole in the second thermal transfer component.

A radiator of the thermosiphon type comprising a collector situated in the lowest part of the radiator, and adapted to contain an intermediate vector fluid, an external heat source, placed within the collector, wherein the intermediate vector fluid is adapted to evaporate on contact with a hot surface of the external heat source, at least one vertical tube containing therein one or more channels (4) connected to the collector and communicating with the same, characterized in that said collector and said channels are dimensioned so that each section thereof crossed by the intermediate vector fluid, excluding the thickness of the liquid film of moisture, has the smallest linear direction which is twice bigger than the diameter db of an intermediate fluid vapor bubble which, during operation, detaches itself from the hot surface of the external source during boiling of the intermediate fluid.