CN2327131Y - Radio shielding film for hand-held mobile telephone - Google Patents
Radio shielding film for hand-held mobile telephone Download PDFInfo
- Publication number
- CN2327131Y CN2327131Y CN97247422U CN97247422U CN2327131Y CN 2327131 Y CN2327131 Y CN 2327131Y CN 97247422 U CN97247422 U CN 97247422U CN 97247422 U CN97247422 U CN 97247422U CN 2327131 Y CN2327131 Y CN 2327131Y
- Authority
- CN
- China
- Prior art keywords
- radio
- hand
- shielding film
- attenuation network
- held mobile
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model relates to a radio shielding film for a hand-held mobile telephone which is composed of a radio-frequency echo attenuation network, a radio-frequency choke ring and an adhesive layer. The size of the radio-frequency echo attenuation network corresponds with the size of the earpiece of a mobile of a hand-held movable telephone. The periphery of the front is connected with the closed circular radio-frequency choke ring, and the periphery of the reverse is provided with the adhesive layer. The radio shielding film for the hand-held mobile telephone can be pasted at the earphone position of the mobile, and the phenomena of injuring the organs, such as the brain, etc. because of the entering of the radio frequency signal into the eye can be relieved. Thus the good health of the users of the hand-held movable telephone can be effectively protected.
Description
The utility model relates to a kind of electromagnetic signal attenuating device, the particularly hand-held phone radio shielding film that moves.
Hand held mobile phone is rapidly popularized in China, and the existing market owning amount is considerable.Because emission radio-frequency carrier power reaches 600mw～1000mw during its conversation, near brain earhole one side, this power level is far longer than the requirement to the following power of 20mw of human body safety.Brain has solid skull protecting, the radio frequency of can decaying, but earhole but opening wide, hole electromagnetic leakage effect will work the mischief to brain health.Confirm according to some cellphone subscribers: after using mobile phone for a long time, the eye and the brain of nearly antenna side can generate heat, and produce degradation phenomenon under dizziness, headache, the eyesight, so with the passing of time longly will cause cataract by the moon, be losing one's memory and the brain tumor pathology.This is a kind of potential electromagnetic pollution, is often ignored by people.
The purpose of this utility model is to provide a kind of its device that influences the emission radio-frequency carrier power high attenuation of human body that makes that is used for hand held mobile phone, thereby makes hand held mobile phone user's organs such as brain avoid infringement.
The purpose of this utility model is achieved through the following technical solutions.
A kind of hand held mobile phone radio shielding film, constituted by RF-reflective attenuation network, radio frequency chokes ring and adhesive-layer, the earpiece size of the size of RF-reflective attenuation network and hand held mobile phone adapts, the periphery in its front is connected with the toroidal radio frequency chokes ring of closure, and the periphery of its reverse side has a kind of adhesive-layer.
The utility model has the advantages that: on function, can weaken the infringement of radio frequency greatly, simultaneously speech quality be had no effect organs such as user's brains; Structurally adopt film shape, and adopt adhesive type with being connected of mobile phone, therefore needn't carry out the repacking of machinery or circuit, easy to use, attractive in appearance, particularly to having the user of hand held mobile phone, as long as it is just passable with the receiver place that it sticks on mobile phone to purchase this film of a slice, it is very convenient to use.
Below in conjunction with accompanying drawing the utility model is further described in detail.
Fig. 1 is one of a structure of the present utility model front view
Fig. 2 is the A-A view of Fig. 1
Fig. 3 is two front views of structure of the present utility model
Fig. 4 is three front views of structure of the present utility model
With reference to Fig. 1,2, RF-reflective attenuation network (1) is made of the metal nethike embrane, and the wire (as copper wire) that this metal nethike embrane is a kind of high conductivity is made into, and belongs to existing procucts, can select the product of 150 orders-250 order scope.The metal nethike embrane is cut into ellipse, its size adapts with the size of the receiver of hand held mobile phone mobile phone, be generally 30mm * 18mm, radio frequency chokes ring (2) is a kind of annular of closure, the about 0.2mm of its thickness, its width is 2.5mm, and its shape and size and metal nethike embrane size adapt, and it is connected with concentric eclipsed form with the metal nethike embrane.Radio frequency chokes ring (2) can adopt aluminum material to manufacture.Adhesive-layer (3) is in the other side with respect to radio frequency chokes ring (2) of metal nethike embrane, and with annular spread, its distribution can be corresponding with radio frequency chokes ring (2).This adhesive-layer can be made of double faced adhesive tape, also can be made of adhesive sticker, and integrated member like this can stick on the receiver place of hand held mobile phone mobile phone easily by double faced adhesive tape or adhesive sticker.
Fig. 3 is of the present utility model moulded for circular, and Fig. 4 is of the present utility model moulded for square, and all the other frame modes of these two kinds of moulding have not repeated them here as previously mentioned.
Below briefly introduce operation principle of the present utility model.
Electromagnetic wave is to transmit energy in the commissure mode in the electric field of alternate and magnetic field, and the carrier frequency propagation properties of hand held mobile phone mainly is a direct wave, so be radio frequency again.
Radio frequency direct projection high conductivity metal nethike embrane is subjected to the primary event attenuation, and this is because the magnetic line of force that eddy current produced and the radio-frequency magnetic line of force of inducting on the nethike embrane are cancelled out each other.
In the time of radio frequency direct projection metal nethike embrane, also induced current on the chokes ring, the magnetic field that this electric current produces is opposite with the direction of radio-frequency (RF) magnetic field, from and further weaken the energy of radio frequency penetration nethike embrane.
According to the electromagnetic shielding relevant technologies, this screened film adopts the woven wire of high conductivity stable chemical performance, its voidage is below 50%, and much larger than more than 60, this moment, the shielding action of nethike embrane can be treated as the metallic plate shielding for each wavelength lead radical of 80MHZ～1000MHZ frequency.
Thus, this screened film is not less than more than the 40dB for the mobile phone carrier radio frequency screening effectiveness of VHF150MHZ, UHF450MHZ analog machine and 900MHZ Global Link frequency range.This screened film is installed on the earpiece position, be able to cover earhole during conversation, can stop the radio frequency electromagnetic more than 99% that enters brain by duct.
Because this screened film only plays attenuation to 80～1000MHZ range radio frequency, audio frequency is had no effect, therefore can guarantee sound quality.
Claims (7)
1. hand held mobile phone radio shielding film, it is characterized in that being constituted by RF-reflective attenuation network (1), radio frequency chokes ring (2) and adhesive-layer (3), wherein: the size of RF-reflective attenuation network (1) and the earpiece size of hand held mobile phone adapt, its positive limit week is connected with the toroidal radio frequency chokes ring (2) of closure, and the periphery of its reverse side has adhesive-layer (3).
2. screened film according to claim 1 is characterized in that RF-reflective attenuation network (1) is 150～250 orders.
3. screened film according to claim 1 is characterized in that RF-reflective attenuation network (1) is for oval.
4. screened film according to claim 1 is characterized in that RF-reflective attenuation network (1) is for round.
5. screened film according to claim 1 is characterized in that RF-reflective attenuation network (1) is a square.
6. radio shielding film according to claim 1 is characterized in that adhesive-layer (3) is made of double faced adhesive tape.
7. radio shielding film according to claim 1 is characterized in that adhesive-layer (3) is made of adhesive material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97247422U CN2327131Y (en) | 1997-10-02 | 1997-10-02 | Radio shielding film for hand-held mobile telephone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97247422U CN2327131Y (en) | 1997-10-02 | 1997-10-02 | Radio shielding film for hand-held mobile telephone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2327131Y true CN2327131Y (en) | 1999-06-30 |
Family
ID=33954890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97247422U Expired - Fee Related CN2327131Y (en) | 1997-10-02 | 1997-10-02 | Radio shielding film for hand-held mobile telephone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2327131Y (en) |
-
1997
- 1997-10-02 CN CN97247422U patent/CN2327131Y/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5777261A (en) | Assembly for attenuating emissions from portable telephones | |
| EP0805562A2 (en) | Radio-frequency hearing aid protector for wireless communications products | |
| CN205583123U (en) | Metal battery lid cell -phone antenna and cell -phone | |
| CN101729955A (en) | Safe insert earphone | |
| US20080159578A1 (en) | Boundary microphone | |
| DE19931213B4 (en) | Mobile phone with a device for protection against electromagnetic radiation | |
| US6448490B1 (en) | Assembly for attenuating emissions from electronic sources | |
| WO1998020577A3 (en) | A radio telephone with high antenna efficiency | |
| CN2327131Y (en) | Radio shielding film for hand-held mobile telephone | |
| GB2390957A (en) | System for enhanced radiation performance of a communication device | |
| DE102006046990A1 (en) | Shielding for mobile phones with a surrounding housing | |
| DE4343703C1 (en) | Hearing aid which can be worn on the head | |
| WO2002095867A1 (en) | Safety shield | |
| DE2508387A1 (en) | ADAPTER FOR HANDLESS USE OF A TELEPHONE | |
| CN207235105U (en) | A kind of Novel earphone speaker | |
| CN2387686Y (en) | Mobile telephone microwave protector | |
| CN2407520Y (en) | Electromagnetic shielding casing for mobile telephone | |
| CN2315741Y (en) | Hand held mobile telephone set capable of proofing electromangetic radiation | |
| CN210578745U (en) | Electronic equipment | |
| CN202121573U (en) | Communication terminal effectively reducing HAC/SAR of antenna | |
| CN208539098U (en) | A kind of antenna structure of all-metal shell mobile phone | |
| CN2619425Y (en) | Protective article for cell phone electromagnetic radiation | |
| CN202871974U (en) | A cell phone antenna with organic conductive material | |
| KR100314291B1 (en) | Receiver Speaker of Cellular Phone With Shielding Effect | |
| CN2387684Y (en) | Mobile telephone having its antenna far from user's head |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |