KR20030032444A - Specific absorption rate reducing unit for portable telephone - Google Patents

Abstract

PURPOSE: An SAR(Specific Absorption Rate) reducing apparatus of a radio terminal is provided to reduce an SAR harmful to a human body by isolating a human face and a main body of a mobile terminal when a user uses the mobile terminal for a call communication. CONSTITUTION: A solenoid(S) operates depending on whether a call is made or not. A speaker housing(120) is protruded from or inserted into an upper surface(100a) of a main body according to an operation of the solenoid(S). An actuator(102) connects the solenoid(S) and the speaker housing(120). The solenoid(S) is connected to a main board(101) and includes the actuator(102) which is inserted into or protruded to the solenoid depending on whether a user makes a phone call for a communication. The speaker housing(120) has a cylinder type, includes a speaker and is connected to the main board(101) by a wire.

Description

Electromagnetic wave specific absorptivity reduction apparatus of wireless terminal {SPECIFIC ABSORPTION RATE REDUCING UNIT FOR PORTABLE TELEPHONE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to wireless terminals, and more particularly, to an apparatus for reducing a specific absorption rate (SAR) harmful to a human body.

In general, a wireless terminal refers to a mobile station capable of performing wireless communication with a counterpart while performing wireless communication with a base station. Such a wireless terminal essentially includes a transmitter, a data input / output unit, an antenna device, and the like. In this case, a speaker device is generally located at the top of the main body of the wireless terminal, and a microphone device is generally located at the bottom of the main body. This sets the distance between the speaker of the main body and the microphone device in consideration of the distance between the user's ear and the mouth.

At this time, the user needs to be in close contact with the receiver and the talker of the wireless terminal in order to communicate with the other party using the wireless terminal. In detail, the user's ear may be heard as close as possible to the speaker of the wireless terminal to hear the other's voice, and the user's mouth may accurately transmit the voice to the other party when the microphone device of the wireless terminal is as close as possible. Therefore, the user tries to keep his face in close contact with the main body of the wireless terminal if possible when communicating with the other party. This posture is required for the following reasons. In the conventional wireless terminal, it is a general structure that the speaker part and the microphone part are fixedly mounted on the lowermost part of the main body, respectively.

On the other hand, the effect of electromagnetic waves generated on a mobile phone call on the human body is prescribed by various institutions called SAR (Specific Absorption Rate), and in general, the measurement of the electromagnetic wave absorption rate is far from the user's face. It depends a lot on the distance.

However, when making a call using a conventional wireless terminal, there is a problem that it is difficult to protect the human body from the generated electromagnetic waves because the speaker device is fixedly mounted to the main body. Although the user recognizes that the electromagnetic waves are harmful, it is common for the user to be in close contact with the speaker and the microphone of the wireless terminal in order to talk more accurately with the other party. The reality is that the user's human body, especially the face part, is exposed unprotected against harmful electromagnetic waves. Therefore, in order to reduce the electromagnetic wave absorption rate to develop a new antenna, or to install the antenna inclined at a predetermined angle to try to solve the problem, due to the characteristics of the wireless terminal, the first problem occurs when falling.

Accordingly, an object of the present invention is to provide an apparatus for reducing the specific absorption rate of electromagnetic waves harmful to the human body generated during communication.

It is another object of the present invention to provide an electromagnetic wave specific absorption rate reducing apparatus for protruding a speaker housing during a call.

In order to achieve the above object, the present invention provides a wireless terminal comprising a main body having a speaker and a microphone device at the top and bottom, respectively,

A speaker housing 120 which automatically protrudes in a direction away from the upper surface 100a of the main body 100 so as to be spaced apart from the head of the human body and the upper surface of the main body 100a by a predetermined distance; And

The actuator 102 is connected to the bottom of the skipper housing 120, and is configured to be a power source that receives an operation signal during a call and provides a force to protrude the speaker housing 120.

1 is a perspective view showing an on-hook state of a wireless terminal to which an abatement device according to the present invention is applied.

2 is a perspective view showing an off-hook state of a wireless terminal to which an abatement device according to the present invention is applied.

3 is a cross-sectional view showing a part of the configuration of the electromagnetic wave specific absorption rate reduction device according to the present invention, showing the speaker housing in a state of being immersed.

4 is a cross-sectional view showing a state in which the speaker housing of the electromagnetic wave specific absorption rate reduction apparatus according to the present invention partially cut out.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention. In describing the present invention, detailed descriptions of related well-known functions or configurations are omitted in order not to obscure the subject matter of the present invention.

1 is a wireless terminal in an on-hook state according to the present invention, Figure 2 is a perspective view showing a wireless terminal in an off-hook state according to the present invention. As shown in Figs. 1 and 2, the illustrated wireless terminal is a flip type wireless terminal. That is, the illustrated flip type wireless terminal is composed of a main body 100, a flip 200, and a non-illustrated hinge module for rotatably connecting the main body 100 and the flip 200. The flip 200 is opened and closed at the main body 100 about the hinge axis A1. The main body 100 is mounted to protrude in the longitudinal direction of the antenna device 110, and includes a keypad 140 including a speaker housing 120, an LCD 130, a plurality of keys 141. In addition, a hinge accommodating part 160 and a microphone device 150 are installed at the lower end of the main body 100.

The wireless terminal according to the present invention maintains a state in which the speaker housing 120 is immersed in the main body upper surface 100a in the call standby mode, and in the call mode, the speaker housing 120 protrudes from the main body upper surface 100a. do. That is, in the on hook state, the speaker housing 120 is immersed, and in the off hook state, the speaker housing 120 is protruded. The off-hook state may be a state in which the flip 200 is automatically shifted to the call mode, and even when the flip 200 is closed, the state may be in a state in which the flip 200 is pressed by pressing a separate call button. As a result, the speaker housing 120 is immersed in or protrudes depending on whether a call is made.

Preferably, the reason why the speaker housing 120 protrudes during a wireless terminal call is to space the contact state between the main body 100 and the human body to some extent. This is because the electromagnetic wave specific absorption rate decreases as the distance between the face of the human body and the wireless terminal main body 100 increases.

Specifically, the configuration of the electromagnetic wave specific absorption rate reduction device according to the present invention will be described. 3 illustrates a state in which the speaker housing 120 is immersed, and FIG. 4 illustrates a state in which the speaker housing 120 protrudes. As shown in Figures 3 and 4, the reduction device according to the present invention is a solenoid (S) operating in accordance with whether the call, and the speaker protruding or immersed in the main body upper surface (100a) by the operation of the solenoid (S). It consists of a housing 120 and an actuator 102 connecting the solenoid S and the speaker housing 120. The solenoid S is connected to the main board 101 and has an actuator 102 that is immersed in or protrudes from the solenoid depending on whether a call is made. The speaker housing 120 is cylindrical and includes a speaker, not shown, and is connected to the main board 101 by a wire not shown.

As a result, the present invention is to reduce the electromagnetic wave specific absorption rate (SAR) harmful to the human body by separating the face and the body of the human body during the call.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but it will be apparent to those skilled in the art that various modifications are possible without departing from the scope of the present invention. For example, the present invention can be equally applied to a microphone device in the same way as a speaker housing. That is, by implementing a separate microphone housing can be configured to protrude during the call.

As described above, the present invention has achieved the effect of reducing the specific absorption rate of electromagnetic waves harmful to the human body during communication.

Claims (2)

In the wireless terminal comprising a main body having a speaker and a microphone device at the top and bottom, respectively, A speaker housing 120 which automatically protrudes in a direction away from the upper surface 100a of the main body 100 so as to be spaced apart from the head of the human body and the upper surface of the main body 100a by a predetermined distance; And Reduction device, characterized in that consisting of a power source that is connected to the bottom of the skipper housing (120) by using an actuator (102), receives a motion signal during a call and provides a force to project the speaker housing (120). According to claim 1, wherein the power source is composed of a solenoid (S), the solenoid is provided with a call end signal at the end of the call to automatically close the speaker housing 120 in the direction to be closer to the main body upper surface (100a) Reduction device characterized in that the configuration to be immersed.