CN103237183B - There is the television set of antenna isolator - Google Patents
There is the television set of antenna isolator Download PDFInfo
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- CN103237183B CN103237183B CN201210478443.2A CN201210478443A CN103237183B CN 103237183 B CN103237183 B CN 103237183B CN 201210478443 A CN201210478443 A CN 201210478443A CN 103237183 B CN103237183 B CN 103237183B
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- radome
- capacitance
- tuner
- signal
- television set
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- 238000005476 soldering Methods 0.000 claims abstract description 16
- 239000003990 capacitor Substances 0.000 claims abstract description 7
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 11
- 239000006071 cream Substances 0.000 claims description 11
- 239000011810 insulating material Substances 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 230000008054 signal transmission Effects 0.000 abstract description 2
- 238000004088 simulation Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The present invention relates to a kind of television set, comprise tuner component, this tuner component comprises: tuner element circuit, the antenna isolator be connected with the signal input part of this tuner element circuit; Tuner element circuit is located in an external shield.This antenna isolator comprises: openend is oppositely arranged, to form a pair radome of a shielding cavity, the outside of one of them radome is provided with screen joint, and the rear port of another radome is connected with the front opening of described external shield.The electric capacity that antenna isolator in television tuner assembly of the present invention adopts is all without lead capacitance or patch capacitor, line loss is few, the high frequency characteristics of signal transmission can be guaranteed, be beneficial to enforcement Reflow Soldering simultaneously, without the need to human weld, be suitable for mass production, and then reach that mass production efficiency is higher, cost is lower and the good effect of homogeneity of product.
Description
Technical field
The present invention relates to the technical field of television set, specifically a kind of have antenna isolator be suitable for exempt from injured television set when being struck by lightning or being short-circuited with external power circuit accident at outside TV signal cable.Meanwhile, antenna isolator is for guaranteeing the transmission quality of high-frequency signal.
Background technology
Television set comprises tuner (being commonly called as tuner), be that television set is used for receiving high-frequency signal and a kind of device demodulating video information, existing tuner is generally divided into digital signal tuner (abbreviation digit tuner) and analog signal tuner (being called for short simulation tuner).
The effect of digit tuner is receiving digital television high-frequency signal, and carry out channel selection and high-frequency signal and amplify and frequency-conversion processing, some is also with intermediate-freuqncy signal to amplify and high-frequency digital signal demodulation function, high-frequency digital signal is after demodulation, the digital signal exported is TS stream (being also transport stream), the digital data transmission stream that it is is unit with " frame ", containing signals such as synchronous head, data, endings in each frame of digital signal; According to the modulation system receiving high-frequency digital signal, digit tuner also divides QPSK(Quadrature Phase Shift Keying orthogonal keying phase modulation) modulate tuner and QAM(Quadrature Amplitude Modulation quadrature amplitude modulation) modulate tuner.QPSK modulates tuner and is mainly used in satellite TV signal reception; QAM modulation tuner is mainly used in cable TV signal and receives.The effect of simulation tuner receives simulated television high-frequency signal, and carry out channel selection, high-frequency signal amplification and frequency-conversion processing, simulation tuner is not generally with intermediate-freuqncy signal to amplify and high-frequency signal demodulation function, and therefore simulated television also needs to add an intermediate frequency amplifier and high-frequency signal demodulator more in addition.The circuit such as reception, amplification, demodulation of general analog high frequency all needs strict adjustment just can meet the requirement of complete machine, therefore be difficult to high-frequency signal is received, to amplify, the function such as demodulation all come by tuner, therefore the main task master simulating tuner is frequency-selecting road, another one task is exactly frequency reducing, the high-frequency signal received is reduced on a fixed frequency, this fixed frequency signal is exactly intermediate-freuqncy signal, and its frequency is generally 38MHz.
The ground connection of cable TV be generally with power supply be connected together, and the TV signal ground connection that cable television system exports is generally the metal shell of Set Top Box, so when their current potential is unequal (such as outside TV signal cable is struck by lightning or is short-circuited accident with external power circuit), electric current will flow to electronegative potential point from high potential point, produces and disturbs even cable TV heating or cable TV spontaneous combustion.For addressing this problem, someone proposes to install capacitance additional between cable television system signal output terminal and the signal input terminal of cable TV, isolate both ground and the unimpeded of inhibit signal connection, the signal capacitance of 2200pF or 1000pF is installed additional between the heart yearn (holding wire) of cable television system signal output terminal and the heart yearn (holding wire) of the signal input terminal of cable TV, the ground wire capacitance of 2200pF or 1000pF is installed additional between the screen (the TV signal earth connection that cable television system exports) of cable television system signal output terminal and the screen (ground wire of cable TV) of the signal input terminal of cable TV.
Chinese patent literature CN 202364309U, disclose a kind of television antenna isolator, it has housing, circuit board, second coaxial slicing ear that can plug the first coaxial slicing ear with the signal input terminal of cable TV and can plug with cable television system signal output terminal; This circuit board is arranged in this housing, and two axle splicing ears are arranged on the sidewall of this housing respectively; On this circuit board, signal capacitance is serially connected between the heart yearn of two coaxial slicing ear; On this circuit board, three ground wire capacitances are parallel with one another and between the front side being serially connected with the screen of two coaxial slicing ear; On this circuit board, another three ground wire capacitances are parallel with one another and between the rear side being serially connected with the screen of two coaxial slicing ear.
Above-mentioned the deficiencies in the prior art part is: the connection of circuit board and each electric capacity adopts human weld, and mass production efficiency is lower and cost is higher, and human weld easily causes homogeneity of product poor; Small product size is large, is unfavorable for being directly installed in television set.
Summary of the invention
The technical problem to be solved in the present invention is to provide one and is suitable for exempting from injured television set when being struck by lightning or being short-circuited with external power circuit accident at outside TV signal cable.
For solving the problems of the technologies described above, the invention provides a kind of television set, comprising tuner component, this tuner component comprises: tuner element circuit, the antenna isolator be connected with the signal input part of this tuner element circuit; Tuner element circuit is located in an external shield.
This antenna isolator comprises: openend is oppositely arranged, to form a pair radome of a shielding cavity, the outside of one of them radome is provided with screen joint, and the rear port of another radome is connected with the front opening of described external shield.
This screen joint internal fixtion is provided with heart yearn joint, is provided with multiple ground wire capacitance and a signal capacitance in a pair described radome; One electrode of this signal capacitance is connected with described heart yearn joint, and another electrode is connected with the signal input part of described tuner element circuit through the rear port of another radome described; Described ground wire capacitance is without lead capacitance or patch capacitor; The two poles of the earth of this ground wire capacitance are in its rear and front end, and adopt tin cream to be weldingly connected with the through hole on a pair described radome respectively through the mode of Reflow Soldering.
As further preferred scheme, described signal capacitance is without lead capacitance or patch capacitor; The two poles of the earth of described signal capacitance are in its rear and front end, and one of them electrode adopts tin cream to be connected with the medial extremity of described heart yearn joint through the mode of Reflow Soldering.
As further preferred scheme, for ease of fixing tin cream, a pair described radome is arranged with multiple through hole; The two poles of the earth of described each ground wire capacitance are weldingly connected with the through hole on a pair described radome respectively.
Through hole on described large and small radome is located at corresponding pit central authorities, is beneficial to when assembling, and adopts tin cream to be connected with the installing hole on large and small radome respectively by two electrodes of each electric capacity, then carries out Reflow Soldering.
For improving shield effectiveness, a pair described radome is respectively large and small radome; The openend of little radome stretches in the opening of described large radome.
Be provided with between described large and small radome for fixing described each ground wire capacitance and signal capacitance, the installing rack that adopts insulating material to make, with when assembling, each electric capacity is loaded installing rack, is beneficial to and improves efficiency of assembling and reliability, double as the insulation between large and small radome.
The outer rim of contiguous described installing rack is provided with slot; the edge part grafting of described little radome is fixed in this slot; described large radome fixed cover is located in the outer rim of described installing rack; and then secure large and small radome and installing rack; and then before enforcement Reflow Soldering; just secure each parts, be beneficial to the reliability guaranteeing Reflow Soldering, and then be beneficial to guarantee homogeneity of product.
Described large and small radome ringwise or rectangle.
The production method of above-mentioned antenna isolator, is characterized in that comprising the steps:
(1), on two electrodes of each electric capacity or on each through hole of described large and small radome, tin cream is fixedly installed;
(2), described large and small radome level is oppositely arranged, and described screen joint is arranged down, and each ground wire capacitance is located at respectively between the relative through hole of on described large and small radome many groups, described signal capacitance is located on the medial extremity of described screen joint;
(3), send into reflow soldering apparatus, complete welding.
As preferred embodiment, in described step 2, before described large and small radome level is oppositely arranged, also comprise: between described large and small radome, installing rack is set, then each ground wire capacitance and signal capacitance are put into the installing hole of this installing rack, the edge part grafting of described little radome is fixed in the slot of this installing rack simultaneously.
The technique effect that the present invention has: the electric capacity that the antenna isolator in (1) television tuner assembly of the present invention adopts is all without lead capacitance or patch capacitor, line loss is few, the high frequency characteristics of signal transmission can be guaranteed, be beneficial to enforcement Reflow Soldering simultaneously, without the need to human weld, be suitable for mass production, and then reach that mass production efficiency is higher, cost is lower and the good effect of homogeneity of product; (2) described large and small radome can adopt stamping parts, and whole product, without the need to pcb board, without the need to plug-in unit original paper, manual welding, easily ensures homogeneity of product; Meanwhile, the cavity that large and small radome is formed is less, and shield effectiveness is better; (3) tuner component overall volume is less, overall structure more firmly, not fragile, be suitable for entirety and put into television set.
Accompanying drawing explanation
In order to make content of the present invention be more likely to be clearly understood, below basis specific embodiment and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
The sectional structure chart of Fig. 1 tuner component of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail:
Embodiment 1:
As Fig. 1, the television set of the present embodiment, comprises tuner component, and this tuner component comprises: external shield 2, the tuner element circuit 10 be located in this external shield 2; The signal input part of this tuner element circuit 10 is connected with the signal output part of an antenna isolator; This antenna isolator comprises: the large and small radome that openend is oppositely arranged, and the openend of little radome 5 stretches in the opening of described large radome 3; The outside of little radome 5 is provided with screen joint 9, and screen joint 9 internal fixtion is provided with the heart yearn joint 6 of coaxial line distribution, and the rear port of large radome 3 is connected with the front opening of described external shield 2; 4,5 or 6 ground wire capacitances 8 and a signal capacitance 1 is provided with in large and small radome; Large and small radome is arranged with multiple through hole, and each through hole is located at corresponding pit central authorities.
Described ground wire capacitance 8 and signal capacitance 1 are without lead capacitance or patch capacitor; The two poles of the earth of this ground wire capacitance 8 are in its rear and front end, and adopt tin cream 4 to be weldingly connected with the through hole on described large and small radome respectively through the mode of Reflow Soldering.
The two poles of the earth of described signal capacitance 1 are in its rear and front end, the electrode of its outboard end adopts tin cream to be connected with the medial extremity of described heart yearn joint through the mode of Reflow Soldering, and another electrode is connected with the signal input part of described tuner element circuit through the rear port of described large radome 3.
Described large and small radome ringwise or square.
As one preferred embodiment, the installing rack 7 of the plastic material for fixing described each ground wire capacitance 8 and signal capacitance 1 is provided with between described large and small radome.The outer rim of contiguous described installing rack 7 is provided with slot, and the edge part grafting of described little radome 5 is fixed in this slot, is beneficial to fixing little radome 5.Described large radome 3 fixed cover is located in the outer rim of described installing rack 7, and then secures large and small radome and installing rack 7, and then before enforcement Reflow Soldering, just secures each parts, be beneficial to the reliability guaranteeing Reflow Soldering, and then be beneficial to guarantee homogeneity of product.
Embodiment 2:
The production method of the antenna isolator in the television tuner assembly of above-described embodiment 1, it comprises the steps:
A, on two electrodes of each electric capacity or on described large and small radome, be fixedly installed tin cream;
B, described heart yearn joint are fixed in screen joint by collets 11, meanwhile, by the medial extremity secure fit of screen joint in the installing hole of described large radome or little radome;
C, described large and small radome level to be oppositely arranged, and described screen joint arranges down and (contacts with the tin cream 4 of bottom to utilize the self gravitation of signal capacitance 1, guarantee to implement Reflow Soldering), and each ground wire capacitance is located at respectively between the relative through hole of on described large and small radome many groups, described signal capacitance is located on the medial extremity of described screen joint;
D, feeding reflow soldering apparatus, complete welding.
As preferred embodiment, in described step C, before described large and small radome level is oppositely arranged, also comprise: between described large and small radome, installing rack is set, then each ground wire capacitance and signal capacitance are put into the installing hole of this installing rack, the edge part grafting of described little radome is fixed in the slot of this installing rack simultaneously.
The present embodiment obvious, above-described embodiment is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.And these belong to spirit institute's apparent change of extending out of the present invention or change and are still among protection scope of the present invention.
Claims (7)
1. a television set, comprises tuner component, it is characterized in that this tuner component comprises: tuner element circuit, the antenna isolator be connected with the signal input part of this tuner element circuit; Tuner element circuit is located in an external shield;
This antenna isolator comprises: openend is oppositely arranged, to form a pair radome of a shielding cavity, the outside of one of them radome is provided with screen joint, and the rear port of another radome is connected with the front opening of described external shield;
This screen joint internal fixtion is provided with heart yearn joint, is provided with multiple ground wire capacitance and a signal capacitance in a pair described radome; One electrode of this signal capacitance is connected with described heart yearn joint, and another electrode is connected with the signal input part of described tuner element circuit through the rear port of another radome described;
Described ground wire capacitance is without lead capacitance or patch capacitor;
The two poles of the earth of this ground wire capacitance are in its rear and front end, and adopt tin cream to be weldingly connected with a pair described radome respectively through the mode of Reflow Soldering;
Each radome ringwise or square.
2. television set according to claim 1, is characterized in that: described signal capacitance is without lead capacitance or patch capacitor;
The two poles of the earth of described signal capacitance are in its rear and front end, and one of them electrode adopts tin cream to be connected with the medial extremity of described heart yearn joint through the mode of Reflow Soldering.
3. television set according to claim 2, is characterized in that: a pair described radome is arranged with multiple through hole; The two poles of the earth of described each ground wire capacitance are weldingly connected with the through hole on a pair described radome respectively.
4. according to the television set one of claim 1-3 Suo Shu, it is characterized in that: a pair described radome is respectively large and small radome; The openend of little radome stretches in the opening of described large radome.
5. television set according to claim 4, is characterized in that: the through hole on described large and small radome is located at corresponding pit central authorities.
6. television set according to claim 4, is characterized in that: be provided with between described large and small radome for fixing described each ground wire capacitance and signal capacitance, the installing rack that adopts insulating material to make.
7. television set according to claim 6, is characterized in that: the outer rim of contiguous described installing rack is provided with slot, and the edge part grafting of described little radome is fixed in this slot; Described large radome fixed cover is located in the outer rim of described installing rack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210478443.2A CN103237183B (en) | 2012-11-22 | 2012-11-22 | There is the television set of antenna isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210478443.2A CN103237183B (en) | 2012-11-22 | 2012-11-22 | There is the television set of antenna isolator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103237183A CN103237183A (en) | 2013-08-07 |
| CN103237183B true CN103237183B (en) | 2015-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210478443.2A Expired - Fee Related CN103237183B (en) | 2012-11-22 | 2012-11-22 | There is the television set of antenna isolator |
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| Country | Link |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112540246B (en) * | 2020-10-30 | 2022-04-26 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Bounded wave strong electromagnetic pulse simulation system |
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|---|---|---|---|---|
| CN1090951A (en) * | 1992-11-25 | 1994-08-17 | 汤姆森消费电子有限公司 | The antenna isolation assembly of hot chassis receiver |
| JP2003298337A (en) * | 2002-03-29 | 2003-10-17 | Toko Inc | Tuned type antenna |
| CN201048441Y (en) * | 2007-03-17 | 2008-04-16 | 巢雨 | Safety type high interference immunity wired network television signal connecting device |
| CN201142718Y (en) * | 2007-12-21 | 2008-10-29 | 康佳集团股份有限公司 | Feeder line isolating circuit |
| CN101340543A (en) * | 2008-08-08 | 2009-01-07 | 上海广电电器有限公司 | Anti-flame separation coupler special for television having 3 core electric power plug |
| CN101399955A (en) * | 2007-09-28 | 2009-04-01 | 青岛海信电器股份有限公司 | Cable television separation device and ground line separation method applied to cable television system |
| CN201352830Y (en) * | 2008-12-27 | 2009-11-25 | 福建捷联电子有限公司 | Liquid crystal television with overvoltage and overcurrent protection device |
| CN201365304Y (en) * | 2009-03-06 | 2009-12-16 | 深圳Tcl新技术有限公司 | Isolating tuner |
| CN202364309U (en) * | 2011-12-08 | 2012-08-01 | 厦门森晖电子有限公司 | Television antenna isolator |
| CN202907069U (en) * | 2012-11-22 | 2013-04-24 | 李明锁 | Television set with antenna isolator |
-
2012
- 2012-11-22 CN CN201210478443.2A patent/CN103237183B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1090951A (en) * | 1992-11-25 | 1994-08-17 | 汤姆森消费电子有限公司 | The antenna isolation assembly of hot chassis receiver |
| JP2003298337A (en) * | 2002-03-29 | 2003-10-17 | Toko Inc | Tuned type antenna |
| CN201048441Y (en) * | 2007-03-17 | 2008-04-16 | 巢雨 | Safety type high interference immunity wired network television signal connecting device |
| CN101399955A (en) * | 2007-09-28 | 2009-04-01 | 青岛海信电器股份有限公司 | Cable television separation device and ground line separation method applied to cable television system |
| CN201142718Y (en) * | 2007-12-21 | 2008-10-29 | 康佳集团股份有限公司 | Feeder line isolating circuit |
| CN101340543A (en) * | 2008-08-08 | 2009-01-07 | 上海广电电器有限公司 | Anti-flame separation coupler special for television having 3 core electric power plug |
| CN201352830Y (en) * | 2008-12-27 | 2009-11-25 | 福建捷联电子有限公司 | Liquid crystal television with overvoltage and overcurrent protection device |
| CN201365304Y (en) * | 2009-03-06 | 2009-12-16 | 深圳Tcl新技术有限公司 | Isolating tuner |
| CN202364309U (en) * | 2011-12-08 | 2012-08-01 | 厦门森晖电子有限公司 | Television antenna isolator |
| CN202907069U (en) * | 2012-11-22 | 2013-04-24 | 李明锁 | Television set with antenna isolator |
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| CN103237183A (en) | 2013-08-07 |
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Address after: 1358 Jinsha Avenue, Jintan District, Changzhou City, Jiangsu Province Patentee after: JIANGSU HUAXING ELECTRONICS Co.,Ltd. Address before: No.1 Workshop, private industrial park, Xuzhuang street, Gaogang District, Taizhou City, Jiangsu Province Patentee before: JIANGSU HUAXING ELECTRONICS Co.,Ltd. |
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Granted publication date: 20151028 |