1. Field of Invention
The present invention relates to an interior antenna, and more particularly to an interior antenna assembly comprising two side wings that can be unfolded for receiving electromagnetic wave signals from different directions.
2. Description of the Related Art
Television programs are transmitted using cable lines or electromagnetic wave signals. An assistance interior antenna is wildly used for enhancing the electromagnetic wave signal receiving ability to improve clarity of television programs. Normally, the assistance interior antenna is formed as rectangular like and has an unchangeable shape and volume. Furthermore, a conventional assistance interior antenna can only receive a narrow frequency band.
The present invention provides a collapsible interior antenna to obviate or mitigate the shortcomings of the conventional assistance interior antenna.
The primary objective of the present invention is to provide a collapsible interior antenna to reduce a footprint of the collapsible interior antenna during storage and receive signals from multiple directions.
The collapsible interior antenna has a main antenna, two wing antenna assemblies and a secondary antenna. The main antenna is rectangular and has two opposite connecting edges. The wing antenna assemblies are pivotally mounted respectively on the connecting edges and coupled transmittably with the main antenna. The secondary antenna is a telescopic antenna, receives signals having a different frequency band to the main antenna and is electrically mounted on the main antenna.
A person can minimize the collapsible interior antenna by retracting the secondary antenna and folding the wing antenna assemblies toward the main antenna. When in use, the wing antenna assemblies can be unfolded to receive signals from different directions.
Other objectives, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
With reference to
The main antenna (10) is capable of receiving television signals transmitted under Ultra High Frequency (UHF) and has a main case (12) and a main antenna assembly (14). The main case (12) may be rectangular, a polygon box or the like, may be convex, and has an optional power hole (122), an optional antenna plug hole (124), an optional signal output hole (126), a rear surface and two connecting edges. The power hole (122), the antenna plug hole (124) and the signal output hole (126) are formed through the rear surface of the main case (12). The connecting edges are opposite edges of the main case (12).
With further reference to
The primary antenna tube (144) and the secondary antenna tube (146) are hollow straight conductive tubes, are separately mounted parallelly on and electrically connected to the circuit board (142), receive and then transmit the television programs signal to the circuit board (142).
The wing antenna assemblies (20,30) receive the television signals and are pivotally mounted respectively on the connecting edges of the main case (12) and each has a wing case (22,32) and a wing antenna (24,34). The wing cases (22,32) correspond to and are pivotally mounted respectively on the connecting edges of the main case (12) so that each wing case (22,32) can fold or unfold toward the main case (12). Each wing case (22,32) has a rear surface, and one of the wing cases (22,32) may have an optional recess (222). In the preferred embodiment of the present invention, the recess (222) is straight and is formed in the rear surface of the wing case (22).
The wing antennas (24,34) are mounted respectively inside the corresponding wing cases (22,32) and are transmittably coupled to the main antenna assembly (14) independently. In the preferred embodiment of the present invention, each wing antenna (24,34) has a conductive antenna wire (242,342) and at least one insulated coupling wire (244,344). The conductive antenna wire (242,342) is partially looped inside the wing case (22,32) and connected to the coupling wire (244, 344).
One conductive antenna wire (242) is connected to one of the coupling wires (244) that is further intermittently threaded longitudinally in and out of the secondary antenna tube (146) to form a closed loop.
The other conductive antenna wire (342) is connected to the reference ground (1421) of the circuit board (142) using two coupling wires (344).
The secondary antenna (40) receives television signals transmitted under a different frequency band from the main antenna (10) and connected electrically to the circuit board (142) of the main antenna assembly (14). In the preferred embodiment of the present invention, the secondary antenna (40) is mounted pivotally in the antenna plug hole (124), receives television signals transmitted under Very High Frequency (VHF), is a telescopic antenna corresponding to the recess (222) and connected electrically to the circuit board (142) through the antenna plug hole (124).
With further reference to
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. 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.
Number | Name | Date | Kind |
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2492529 | Kaplan | Dec 1949 | A |
2495748 | Matson | Jan 1950 | A |
3587105 | Neilson | Jun 1971 | A |
3683392 | White et al. | Aug 1972 | A |
5533304 | Noble | Jul 1996 | A |
6204824 | Davi et al. | Mar 2001 | B1 |
Number | Date | Country | |
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20090027284 A1 | Jan 2009 | US |