CN203277651U - Integrated dual-band digital TV receiving antenna - Google Patents

Abstract

The utility model relates to an integrated dual-frenquency digital television receiving antenna, include a base, a telescopic antenna, an annular antenna and a circuit board, this base is hollow column in order to supply this telescopic antenna of holding, annular antenna and circuit board, this telescopic antenna and annular antenna are connected with the circuit board electricity respectively, telescopic antenna and annular antenna are integrated in the base in order to receive the digital television signal of VHF and UHF frequency band respectively, the digital television signal of the different frequency bands of these antennas of output by the circuit board again, digital television receiving antenna in an organic whole through integrating the setting two frequency bands, solve the inconvenient problem with the cost increase of use of current digital television receiving antenna.

Description

Integrated dual-band digital TV receiving antenna

technical field

The utility model relates to a digital TV receiving antenna, in particular to a digital TV receiving antenna which can simultaneously receive digital TV signals of two different frequency bands and integrate the two receiving antennas into one.

Background technique

The existing digital TV broadcasting (DVB-T) has the advantages of clarity and high image quality. In addition, countries around the world have successively stopped broadcasting analog TV signals, making digital TV broadcasting systems mainstream. Common digital TV signals are sent by the UHF frequency band. The frequency range of its transmission is approximately 470MHz ~ 770MHz. Due to the buffer relationship of analog/digital signal conversion, part of the digital TV signal is transmitted by the VHF high frequency band, and the frequency range of its transmission is approximately 170MHz ~ 230MHz.

Because the digital TV signal has a cliff effect (CLIFF EFFECT), that is, the digital TV signal has only two states: receivable and unreceivable. The TV signal cannot display the TV picture. Therefore, when the digital TV receiving antenna cannot cover all the frequencies of the digital TV signal, the cliff effect will occur and cause the problem of being unable to watch.

It can be seen from the above that the existing digital TV signals are limited by the receiving frequency band designed by the digital TV receiving antenna, and can only receive digital TV signals in the UHF frequency band, but cannot receive digital TV signals in the UHF and VHF high frequency bands at the same time, resulting in inconvenient use. Problem: If the VHF frequency band is set with two telescopic antennas and the UHF frequency band with a circular antenna at the same time in the design mode of the analog TV receiving antenna, there will be asymmetry in the characteristic requirements and the shortcomings of no integral design; A set of digital TV receiving antennas in the UHF frequency band and a set of digital TV receiving antennas in the VHF high frequency band will increase the cost.

Utility model content

As mentioned above, the existing digital TV signals are limited by the receiving frequency band set by the digital TV receiving antenna, and cannot simultaneously receive digital TV signals in the UHF and VHF high frequency bands, causing inconvenience in use. If the two frequency bands are set separately Therefore, the main purpose of this new model is to provide an integrated dual-band digital TV receiving antenna, which mainly integrates the digital TV receiving antennas of two frequency bands into one, and solves the problem of existing digital TV receiving antennas. The problem of inconvenient use and cost increase of the receiving antenna.

The main technical means adopted to achieve the stated purpose is to make the integrated dual-band digital TV receiving antenna include:

A base, which includes a plurality of shells, the multiple shells are correspondingly joined, the base is hollow columnar, and the multiple shells have a top end and a side wall;

A telescopic antenna is located in the base and protrudes from the top of the casing. The telescopic antenna includes a multi-section antenna rod, and the multi-section antenna rods are mutually nested for elongation or shortening for Receive digital TV signals in the VHF band;

A loop antenna is located in the base and protrudes from the side wall of the casing, and does not intersect with the telescopic antenna. The loop antenna includes more than one section of antenna loops for receiving digital TV signals in the UHF band; as well as

A circuit board is arranged in the base, and the circuit board is provided with two contacts and more than one output port, and the two contacts are respectively electrically connected with the telescopic antenna and the loop antenna.

The beneficial technical effects of the utility model are: the integrated dual-frequency digital TV receiving antenna composed of the components is used, the telescopic antenna and the loop antenna are integrated in the base to receive the digital TV signals of the VHF and UHF frequency bands respectively, and then the The output port of the circuit board outputs the digital TV signals of different frequency bands received by the antennas. The telescopic antenna can adjust the length of the antenna rod extending out of the base according to the receiving frequency of the VHF frequency band. By setting two digital TV receiving antennas of different frequency bands and It is integrated in the same base, solving the problems of inconvenient use and cost increase of the existing digital TV receiving antenna.

Description of drawings

Fig. 1 is a perspective view of the first preferred embodiment of the utility model;

Fig. 2 is an exploded view of the first preferred embodiment of the utility model;

Fig. 3 is the wiring diagram of the antenna and the circuit board of the first preferred embodiment of the utility model;

Fig. 4 is the exploded view of the second preferred embodiment of the utility model;

Fig. 5 is a perspective view of a third preferred embodiment of the present invention;

Fig. 6 is an exploded view of a third preferred embodiment of the present invention.

reference sign

10 telescopic antenna 101 screw holes

102 antenna head 103 wire

11 antenna mast

20 Loop Antenna 21 Antenna Loop

211 first connecting part 212 second connecting part

213 conductive sheet

22 connecting piece 23 wire

30 circuit boards 31 contacts

32 output ports

40 base 41 front shell

411 chassis 412 buckle slot

413 foot pad 414, 415, 416 card slot

42 back shell

421 buckle 422 top cover

423 through hole 424 fixed column

425 screw 426 card slot

Detailed ways

Regarding the first preferred embodiment of the present utility model, please refer to Fig. 1 to Fig. 3, it comprises a retractable antenna 10, a loop antenna 20, a circuit board 30 and a base 40, and the base 40 is in the form of The hollow column is used to accommodate the telescopic antenna 10 , the loop antenna 20 and the circuit board 30 ; in this preferred embodiment, the bottom surface of the base 40 is used as the horizontal plane, and it is used as the reference plane of the three-dimensional space.

The telescopic antenna 10 includes a multi-section antenna rod 11, and these antenna rods 11 are mutually fitted to receive digital television signals in the VHF frequency band, as shown in Figure 2, in this embodiment, the bottom and top antennas The free end of rod 11 is respectively provided with a screw hole 101 and an antenna head 102, and the free end of antenna rod 11 at the bottom is to connect a lead 103 through screw hole 101, and is electrically connected with circuit board 30 by lead 103, and this antenna head 102 It is for the user to stretch the antenna rod 11 of the telescopic antenna 10 upward in a direction perpendicular to the bottom surface of the base 40; in this preferred embodiment, the telescopic antenna 10 includes three antenna rods 11 that are sequentially fitted, The diameter of the antenna rod 11 at the bottom is slightly larger than the antenna rod 11 in the middle, and the diameter of the antenna rod 11 at the top is slightly smaller than the antenna rod 11 in the middle. The length of the retractable antenna 10 can receive digital TV signals of different frequencies in the VHF band.

The loop antenna 20 is used to receive digital television signals in the UHF frequency band, and it is embedded in the base 40 in a secondary crossing manner. The loop antenna 20 includes two antenna loops 21 and a connecting piece 22, two sections of antenna loops 21 is slightly C-shaped by being pressed in its length direction, and its C-shaped openings are opposite to each other. The two sections of antenna ring 21 are made of anti-corrosion metal sheets or coated with insulating and protective materials on the outside of the metal sheets. Avoid exposure to air to produce oxidation and corrosion; the connecting piece 22 is U-shaped, and its two ends are respectively connected with the antenna rings 21 to allow the antenna rod 11 to avoid the two-section antenna ring 21 and the antenna rod of the telescopic antenna 10. 11 are in contact with each other; two sections of antenna loops 21 respectively form a first connecting portion 211 and a second connecting portion 212 at their two ends, the two first connecting portions 211 are respectively connected to the two ends of the connecting piece 22, and the two second connecting portions The connecting parts 212 are respectively connected to a conductive sheet 213, and the conductive sheet 213 is electrically connected to the circuit board 30 through a wire 23; the above-mentioned loop antenna 20 combined with two antenna loops 21 and a connecting sheet 22 has an overall shape of It is circular, square, trapezoidal or polygonal, and it is not limited here. In this preferred embodiment, the loop antenna 20 is presented in a trapezoidal shape. The first connecting portion 211 and the second connecting portion at both ends of each antenna loop 21 212 are parallel to each other and are horizontal, and the middle section of each antenna ring 21 is vertical, and the length of the horizontal end of the loop antenna 20 with the connecting piece 22 is greater than the length of the horizontal end with the conductive piece 213. Therefore, the two sections of antenna The loop antenna 20 after the ring 21 is combined with the connecting piece 22 is a trapezoid (or an inverted trapezoid) whose length at the top (the horizontal end with the connecting piece 22) is greater than the length at the bottom (the horizontal end with the conductive piece 213), and two The second connecting portion 212 of the segment antenna loop 21 is not connected and has an open shape.

The circuit board 30 is provided with two contact points 31 and an output port 32, and these contact points 31 are electrically connected to the free end of the bottommost antenna rod 11 of the retractable antenna 10 and the conductive sheet 213 of the loop antenna 20 through the wires 103 and 23 respectively. Connect, this output port 32 is the digital television signal of the different frequency bands that output retractable antenna 10 and loop antenna 20 receive respectively, in this preferred embodiment, this output port 32 is an F head socket, for connecting a has F head The cable of the plug (not shown in the figure); the circuit board 30 can be further provided with a signal amplifier and a power input port (not shown in the figure), and the signal amplifier is connected in series between the contacts 31 and the output port 32, In order to amplify the digital TV signal received by the contacts 31, the power input port provides power required by the signal amplifier.

The base 40 is a hollow cylinder, the diameter of the bottom end is greater than the diameter of the top end, and the side wall of the base 40 shrinks inward towards the axis of the base 40 at the middle section, so that the side wall forms an arc surface , the base 40 includes a front shell 41 and a rear shell 42, the front shell 41 and the rear shell 42 are engaged with each other correspondingly, a chassis 411 is formed at the bottom of the front shell 41, and the chassis 411 is extended to the rear shell 42 At the edge of the bottom end, to close the opening at the bottom end of the base 40, the chassis 411 forms a buckle groove 412 for fastening with a buckle 421 at the bottom edge of the rear shell 42; the top of the rear shell 42 forms a top cover 422, the top cover 422 is disc-shaped, and a through hole 423 is formed at its center, and the through hole 423 is for the antenna rod 11 of the telescopic antenna 10 to extend out, and the top cover 422 extends to the top of the front shell 41 edge, to close the opening at the top of the base 40; the back shell 42 is formed with a fixing post 424 near the center of the inner side, and the bottommost antenna rod 11 of the telescopic antenna 10 is provided with a screw 425 on its screw hole 101, And locked on the fixed column 424 of the rear shell 42; the base 40 is provided with a foot pad 413 at the bottom of the chassis 411, and the foot pad 413 is a material with shock absorption or adhesive force to avoid the base 40 Shake or fix the base 40 on an object.

The above-mentioned base 40 is for accommodating and fixing the telescopic antenna 10, the loop antenna 20 and the circuit board 30. The telescopic antenna 10 is extended upward by the top cover 422 of the rear shell 42 of the base 40, and the front shell 41 and the rear The shell 42 is respectively formed with four slots 414, 426 at the joints. These slots 414, 426 are opposite to each other, and the depth of each slot 414, 426 is half of the width of the antenna loop 21, for clamping and merging. The antenna loop 21 of the loop antenna 20 is fastened, and the antenna loop 21 of the loop antenna 20 protrudes from the slots 414, 426 of the front shell 41 and the rear shell 42 to the outside of the base 40, so that the loop antenna The antenna 20 forms a secondary intersection with the base 40 , and the loop antenna 20 and the telescopic antenna 10 do not intersect each other.

As can be seen from the above, the telescopic antenna 10 and the loop antenna 20 are integrated in the base 40 to respectively receive digital TV signals of the VHF and UHF frequency bands, and then the output port 32 of the circuit board 30 outputs the received digital TV signals of different frequency bands, The telescopic antenna 10 can adjust the length of the antenna rod 11 extending out of the top cover 422 of the base 40 according to the receiving frequency of the VHF frequency band, and the loop antenna 20 directly receives the digital television signal of the receiving frequency of the UHF frequency band. The receiving antenna of the TV is integrated into one body, which solves the problems of inconvenient use and cost increase of the existing digital TV receiving antenna.

Regarding the second preferred embodiment of the present utility model, please refer to Fig. 4, it is roughly the same as the first preferred embodiment, the difference is that the loop antenna 20 is formed by bending a single segment antenna loop 21. Trapezoidal, the overall shape of the loop antenna 20 can also be circular, square or polygonal, and it is not limited here. The length of the horizontal end near the top cover 422 is greater than the length of the horizontal end near the chassis 411. The base 40 The front shell 41 is formed with four card slots 415, the depth of these card slots 415 is greater than or equal to the width of the antenna loop 21 of the loop antenna 20, which means that the depth of these card slots 415 is greater than that of the first preferred embodiment. The depth of the slot 414 mentioned above, when the antenna loop 21 is completely engaged in the slot 415 of the front case 41 and protrudes outward from the side wall of the front case 41, the loop antenna 20 is not located at the axis of the base 40 place; by setting the loop antenna 20 away from the axis of the base 40, the intersection of the loop antenna 20 and the telescopic antenna 10 can be avoided.

Regarding the third preferred embodiment of the present utility model, please refer to Fig. 5 and shown in Fig. 6, it is roughly the same as the second preferred embodiment, the difference is that the front shell 41 of the base 40 is formed with two cards The slot 416, the horizontal end of the loop antenna 20 close to the top cover 422 of the base 40 is not covered in the base 40, and only one end of each second connecting portion 212 of the loop antenna 20 is respectively engaged in the slots 416 In addition, the positions of the card slots 416 are moved up compared with the positions of the card slots 414 in the second preferred embodiment.

For the antenna loop 21 of the loop antenna 20 in each of the embodiments, the length of the horizontal end close to the top cover 422 can also be shorter than the length of the horizontal end close to the chassis 411, so that the overall shape of the loop antenna 20 is a trapezoid whose top length is shorter than the bottom length. ; And the middle section of each antenna ring 21 can also be arc-shaped, so that the overall shape of the loop antenna 20 is slightly elliptical.

Claims (10)

1. An integrated dual-frequency digital television receiving antenna, characterized in that, the integrated dual-frequency digital television receiving antenna includes: A base, which includes a plurality of shells, the multiple shells are correspondingly joined, the base is hollow columnar, and the multiple shells have a top end and a side wall; A telescopic antenna is located in the base and protrudes from the top of the casing. The telescopic antenna includes a multi-section antenna rod, and the multi-section antenna rods are mutually nested for elongation or shortening for Receive digital TV signals in the VHF band; A loop antenna is located in the base and protrudes from the side wall of the casing, and does not intersect with the telescopic antenna. The loop antenna includes more than one section of antenna loops for receiving digital TV signals in the UHF band; as well as A circuit board is arranged in the base, and the circuit board is provided with two contacts and more than one output port, and the two contacts are respectively electrically connected with the telescopic antenna and the loop antenna. 2. The integrated dual-frequency digital TV receiving antenna according to claim 1, wherein the plurality of shells are a front shell and a rear shell, and the front shell and the rear shell are joined correspondingly to each other, and the The back shell is formed with a fixed post near the center of the middle section, and the telescopic antenna is combined with the fixed post of the back shell. 3. The integrated dual-frequency digital TV receiving antenna according to claim 2, characterized in that, the bottommost end of the telescopic antenna and the free end of the topmost antenna rod are respectively provided with a screw hole and an antenna head, and the screw hole A screw is provided in the hole to lock the telescopic antenna to the fixing post of the rear case. The free end of the antenna rod at the bottom of the telescopic antenna is connected to a wire through the screw hole, and the wire is electrically connected to the circuit board. 4. The integrated dual-frequency digital TV receiving antenna according to claim 3, characterized in that, the side walls of the front shell and the rear shell shrink inward toward the axis of the base at the middle section, so that the front shell and the rear shell The side walls of the shell are curved. 5. The integrated dual-frequency digital TV receiving antenna according to claim 4, wherein the bottom end of the front shell is formed with a disk-shaped chassis, and the chassis extends to the edge of the bottom end of the rear shell to close The opening at the bottom of the base, the chassis is formed with a buckle groove for a buckle at the bottom edge of the back shell; the top of the back shell is formed with a disc-shaped top cover, and a through The through hole is used for stretching out the telescopic antenna, and the top cover is extended to the edge of the top of the front shell. 6. The integrated dual-frequency digital TV receiving antenna according to claim 5, wherein the base is provided with a foot pad at the bottom of the chassis, and the foot pad is a shock-absorbing or adhesive pad. material, so as to prevent the base from shaking or to fix the base on an object. 7. The integrated dual-frequency digital television receiving antenna according to any one of claims 1 to 6, wherein the loop antenna has two sections of antenna loops and a connecting piece, and the two sections of antenna loops are based on Its length direction is pressed into a C-shape, and its C-shaped openings are opposite to each other. The connecting piece is U-shaped, and the two ends of the antenna rings respectively form a first connecting part and a second connecting part. Each first connecting part is respectively connected to both ends of the connecting piece, and the two sections of antenna rings are combined with the connecting piece to form a trapezoid, and the second connecting part is connected to the circuit board through a wire, and the two second connecting parts is not connected. 8. The integrated dual-frequency digital TV receiving antenna according to any one of claims 2 to 6, wherein four card slots are respectively formed at the joints of the front shell and the rear shell, and the four The two card slots are opposite to each other, and the depth of each card slot is half of the width of the loop antenna, so as to clamp and fasten the two horizontal ends of the loop antenna and form a secondary intersection. The antenna loops of the loop antenna are respectively formed by the front The slots of the shell and the rear shell protrude outward from the base. 9. The integrated dual-frequency digital TV receiving antenna according to any one of claims 2 to 6, wherein the loop antenna is trapezoidal by bending a single section antenna loop, and the base of the base The front shell is formed with four slots, the depth of the four slots is greater than or equal to the width of the loop antenna, and the two horizontal ends of the loop antenna are completely engaged in the slots of the front shell and protrude to the outside of the base A secondary intersection is formed, and the loop antenna is located outside the axis of the base without intersecting the telescopic antenna. 10. The integrated dual-frequency digital TV receiving antenna according to any one of claims 2 to 6, wherein the loop antenna is trapezoidal by bending a single section antenna loop, and the base of the base The front shell is formed with two slots, the depth of which is greater than or equal to the width of the loop antenna, the horizontal end of the top cover of the loop antenna close to the base is not covered in the base, but with a connecting piece One end is engaged in the card slots, and the loop antenna does not intersect with the telescopic antenna.

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