Patent Application
20090290353
The present invention is related to a heat dissipating structure for a lamp, and more particularly to a heat dissipating structure for a lamp base, so as to provide a heat dissipating function therefor.
Currently, the main illumination instruments are still incandescent lamps (and also the energy saver fluorescent lamps) since most families, offices and public places still employ the base structure for the incandescent lamps, and also the newly developed LED illuminations are still not popular. A conventional lamp, such as Taiwan Patent No. M305303, entitled “Structure Improvement of Lamps”, is composed of a lamp housing, a positioning base, a fluorescent tube, a conducting head, a circuit board, and electronic components connected to the circuit board, wherein the lamp housing is consisted of two light permeable half plastic housings, and the two light permeable half housings have plural heat dissipating holes mounted thereon for providing heat dissipating function. However, since the fluorescent tube is encapsulated in the lamp housing and the positioning base does not additionally provide the heat dissipating function, the exhausting of the heat produced by the lamp tube through the heat dissipating holes has to be achieved by air convection. But, based on the physical principle that hot air rises up, it is obvious the heat dissipating holes which are located at the lower portion of the lamp housing can not efficiently exhaust the heat. Besides, the encapsulated structure also lowers down the heat dissipating efficiency. Therefore, this is still improvable. Another disclosure, Taiwan Patent No. M265535, entitled “Bulb Type of Daylight Lamp Composite Structure”, includes a daylight tube, a metal assemblage, an outer shell, a component for assembling and fixing, and a ballast and starter. In this disclosure, although the daylight tube is not sealed for providing a better heat dissipating effect, the ballast and starter is accommodated in the assembling and fixing component, which only provides several let in holes for passing through the air and providing slight heat dissipating effect, and thus, the daylight tube still might become overheated. Some other similar disclosures are Taiwan Patent No. M272222, entitled “Energy Saver Lamp” and Taiwan Patent No. M275529, entitled “Anion Energy Saver Lamp”, but identically, the heat dissipating efficiency thereof is still improvable for preventing the overheated situation from reducing the life thereof.
The object of the present invention is to provide a lamp structure with great heat dissipating capability, so as to increase the life time of the lamp.
The present invention is related to a heat dissipating structure for a lamp including an illuminating element, a lamp base, a metal housing, a ring-shaped coil and a metal base, wherein the metal housing has a great heat conducting capability, the illuminating element is mounted on the lamp base, which is engaged with the metal housing, a ring-shaped coil which is connected with plural electronic components is further mounted between the metal housing and the lamp base, the ring-shaped coil is electrically connected to the illuminating element and the metal base, and the metal base is electrically connected to a power source, so that through a conduction of the metal base, the ring-shaped coil can acquire and transform electricity to provide to the illuminating element for operation. Therefore, through the great heat conductivity of the metal housing, the heat can be averagely distributed over the surface thereof for emitting outwardly so as to reduce the lamp temperature during operation.
The foregoing aspects and many of the attendant advantages of this invention will be more readily appreciated as the same becomes better understood by reference to the following detailed description, when taken in conjunction with the accompanying drawings, wherein:
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It is to be understood, however, that even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
