LT6023B - The sheath for mobile phone - Google Patents

Abstract

The invention relates to security devices. Invention purpose - effectively reduce mobile phone electromagnetic radiation arising from a mobile phone to user's ear or the sound of a mobile phone when it is connected to the user's body, without disrupting cell phone service, and without compromising the quality of communication. A sheat of the mobile phone with a clear plastic screen for a keyboard, the wells at the loudspeaker and microphone, and cover with adhesive strips, in addition characterized in that the main outer shield material is aluminized foil, on the inside is covered with a layer of absorbent rubber, at the front have 8 of the apertures at speaker and microphone, closed the lid at the bottom covered with adhesive tape and lower part of tray of mobile phone covered with adhesive strip so, as a sheath will seal tightly with a tray shield material and thus protect the consumer from spreading through the spaces of electromagnetic radiation.

Description

The invention relates to protective devices which reduce electromagnetic radiation when the mobile phone is close to the user's body in operating mode or while speaking.

When a mobile phone is in operation (talking, ringing), a parameter characteristic of electromagnetic radiation is the electromagnetic field energy flux density, which often exceeds safe norms. When talking on a mobile phone, it is usually held close to your ear and when not in use, it is held in your pocket near your body. In this way, the electromagnetic radiation emitted from the mobile phone (ringing) interacts directly with the human body. Normal cell phone cases do not protect against harmful electromagnetic radiation. Therefore, cases are needed that, while operating on mobile phones, would reduce the outward transmission of electromagnetic radiation without compromising the quality of communication. For this purpose, cell phone cases are used to protect against electromagnetic radiation from mobile communications.

A prototype of the present invention is a mobile phone case (EP 0675516) designed to reduce electromagnetic radiation emitted by a mobile phone. The mobile phone case, which has a top cover, two adhesive strips, eyes and a transparent plastic screen for the keyboard, is made of nylon with a combination of steel and carbon threads, covered with leather. The main advantage of the mobile phone case is its very practical and comfortable mobile phone design. The disadvantage of this case is the shielding efficiency of the cell phone case against electromagnetic radiation is only 40%.

The object of the invention is to improve the case of a mobile phone so that it more effectively suppresses the electromagnetic radiation emitted by the mobile phone when the phone is operating (speaking, ringing) and is in close proximity to the user's body.

The mobile phone case is based on the reflection and absorption of electromagnetic radiation inside the case. And only a small amount of the electromagnetic radiation coming out is needed to provide a good connection

The main element of the cell phone case is a two-layer material consisting of an aluminum foil on the outside and a layer of rubber on the inside.

table

For mobile when the phone rings Talking on mobile by phone Mobile Phone disseminated electromagnetic radiation without holster 32 pW / cm ² 14 pW / cm ² Mobile Phone disseminated electromagnetic radiation when the phone embedded in patentable dual layer mobile phone case 1 pW / cm ² 0.9 pVV / cm ² Mobile Phone disseminated electromagnetic radiation when mobile phone in tray prototype 19 pW / cm ² 5.6 pW / cm ²

Table 1 compares the research data obtained on the mobile phone electromagnetic radiation emitted when the phone is embedded in a two-layer mobile phone case with the research data obtained on the mobile phone emitted EMT. When a cell phone is held in a pocket near the body and is called from another cell phone, the electromagnetic field energy density reaches 32 pW / cm ² . Placing the mobile phone in its own dual-layer case reduces the electromagnetic energy flux density by more than 30 times to 1 pW / cm ² . For mobile phones, the electromagnetic field energy density is 14 pW / cm ² . In the case of a mobile phone, the density of the electromagnetic field energy flow is reduced by more than 15 times to a value of 0.9 pW / cm ² when placed in a two-layer case. The electromagnetic field energy flux density must be at least 10 ' ⁷ pW / cm ^{2 for quality communication} . Studies have shown that the shielding of the developed case is 2.4 times more effective than the shielding of the chosen prototype (EP 0675516).

The drawings are a representation of the present invention.

FIG. 1 is a schematic longitudinal sectional view of an electromagnetic radiation suppression of a cell phone case of the present invention;

FIG. 2 is an axonometric view of a cell phone case of the present invention with a section:

(a) frontal view,

(b) View of the rear wall.

The main element of the cell phone case is a two-layer material with an aluminum foil on the outside and a rubber layer on the inside.

The cell phone case consists of a two-layer material: on the outside eleven pm aluminum foil 1, on the inside - two mm thick rubber 2. The front part of the cell phone consists of a lid 3 on the bottom, eight eyes 6 on top and bottom, one third For 4 keyboards. The back of the cell phone case comprises: an adhesive tape 5 on the inside of the cover 3, and another adhesive tape 5 on the outside of the case 5. The cellular phone generates its electromagnetic radiation 8, reflected electromagnetic radiation 7, absorbed electromagnetic radiation 9, radiation 10.

TRAY OPERATION PRINCIPLE

When the mobile phone is operating (ringing) in the closed case with the cover (3) at the bottom of the case and the adhesive strips (5), the plastic transparent screen (4) on the keypad, the mobile phone the radiation (8) enters into the inner surface of the rubber (2) of the case, whereby part of the electromagnetic radiation is suppressed (9), the remainder diffused in different directions: one part of the electromagnetic radiation passing through the rubber layer reflects 11 pm aluminum foil (1) (4) enters back into the rubber surface and returns to the tray almost completely depressed (7); the other part of the electromagnetic radiation (10) penetrates through the meshes (6) of 0.45 mm in aluminum foil to provide a high quality communication.

Claims (4)

DEFINITION OF INVENTION 1. A mobile phone case having a closure cover, adhesive tapes, speaker and microphone eyes, and a plastic transparent keyboard for a keyboard, wherein the main shielding material is a bilayer layer with an aluminum foil on the outside and a rubber layer on the inside. 2. A cellular phone case according to claim 1, wherein the front portion of the case comprises 8 eyelets per cellphone microphone and speaker. 3. A mobile phone case according to claim 2, wherein said eye has a diameter of 0.45 mm. 4. The cellular phone case of claim 1, wherein the closure lid is at the bottom of the case.