JPS61285828A - Portable radio equipment - Google Patents

Abstract

PURPOSE:To improve the cooling effect of an equipment by mounting a power amplification semiconductor to the bearing of an antenna and constituting the antenna as a heat pipe. CONSTITUTION:The power amplification semiconductor 3 being a heat element is tightened to the circumference of the bearing 6 of the antenna 6 by a screw 9 via an insulator 8 and the power amplification semiconductor 3 is connected electrically to an electronic circuit 2 by a lead 10. A cylindrical conductive spring 12 whose middle diameter is reduced is loaded to the through-hole 6b of the bearing 6 and the antenna 5 is clipped elastically by the reduced diameter part 12a. A signal from the electronic circuit 2 is amplified by the power amplification semiconductor 3, the semiconductor 3 is heated in this case and the heat is conducted to the antenna 5 via the insulator 8, the bearing 6 and the spring 12 and the antenna 5 acts like a heat sink to cool the high temperature rise in the bearing 6 or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a portable radio device, and particularly to a structure that improves the cooling efficiency of a power amplifying element.

[Conventional technology]

The conventional device will be explained based on FIG. 3. In the figure, (1) is a casing of a portable radio;
An electronic circuit (2) and a power amplifying semiconductor (3) constituting the electronic port (2) are housed in the electronic circuit (2). This power amplification semiconductor (3) generates heat during transmission and reaches a high temperature, so it functions as a heat generating element. Therefore, (4) is a heat dissipation part for cooling the generated power amplifying semiconductor (3), and (5) is an antenna for transmitting and receiving radio waves, and this antenna (5) is fixed to the top surface of the housing (1). The conductor (7) is connected to the electronic circuit (2) through a conductor (7) that electrically connects the bearing (6) and the electronic circuit (2). and is configured to transmit signals.

Therefore, when transmitting radio equipment, the semiconductor for power amplification (3)
When the heat is generated, the heat is radiated into the casing (1) via the heat radiating section (4). As a result, the air temperature inside the casing () increases, so it is generally
(not shown) to promote air circulation inside and outside the housing (1) to prevent the temperature of the radio from rising. In addition, the heat dissipation section (4) is connected to the casing (1) so that the heat generated by the power amplifying semiconductor (3) is directly radiated to the outside air via the heat dissipation section (4) and the casing (+). was.

[Problem that the invention seeks to solve]

However, in order to provide wind windows and holes in the casing (1), it is not possible to drill them in a large area due to the need for dustproofing and waterproofing.On the other hand, if the area is made small, the circulation with the outside air may be restricted. As the temperature of radio equipment increases, it is necessary to use elements that reduce power consumption in circuits to suppress the heat generated, or it is necessary to increase the size of the equipment for high-temperature operation. There were some problems.

The present invention was made in order to solve the problem of rescue equipment, and its purpose is to improve the cooling effect of the device.

[Means for solving problems]

In the present invention, a power amplification semiconductor is attached to a bearing of an antenna, and the antenna is configured as a heat pipe.

[Effect]

According to the present invention, the heat generated in the power amplification semiconductor is transferred to the bearing of the antenna, and the heated bearing is cooled by the antenna, which is a heat pipe.

〔Example〕

Hereinafter, based on the embodiments shown in FIGS. 1 and 2, the same or equivalent parts as in the prior art are given the same reference numerals, and in FIG. 0, the present invention will be explained in detail. The semiconductor (3) is fastened to the circumferential surface of the bearing (8) of the antenna (5) via an insulating material (8) with a screw (9), and this power amplifying semiconductor (3) is further attached to a conductive wire (10). It is electrically connected to the electronic circuit (2) by. This bearing (6)
The upper screw part (8a) is the hole (
Ia), and is tightened to the upper surface of the casing (1) via a nut at this threaded portion (6a). A conductive cylindrical elastic body (12) with a reduced diameter in the center is attached to the insertion hole (6b) of this bearing (6), and this reduced diameter part (t2
The antenna (5) is elastically clamped by a). In this case, the antenna (5), the elastic body (12), and the bearing (6) are electrically and thermally connected.

However, the signal from the electronic circuit (2) is amplified by the power amplifying semiconductor (3), but at this time, the power amplifying semiconductor (3) generates heat, and this heat is transferred to the insulating material (8) and the bearing. (6)
, when heat is transferred to the antenna (5) via the elastic body (12), this antenna (5) acts as a heat pipe,
This will cool high temperature heating parts such as the bearing (6). On the other hand, the amplified signal will be transmitted via the conductor (10), electronic circuit (2), conductor (7), bearing (θ), elastic body (12), and antenna (5).

In other words, the surface of the antenna (5) is used for transmission and reception,
The interior will be used for heat radiation.

In this way, the housing (1) can be effectively cooled by the antenna (5) located in the atmosphere even when the radio is in operation.

Although the cylindrical elastic body with a reduced diameter at the center has been described as a member for fixing the antenna (5) to the bearing (6), it is not limited to this type of member, and other materials may be used as long as they fill the space between the two. It may be something. In addition, the bearing (8) and the housing (1
) has been described using the nut (II), but the insulating material (8) may be formed integrally with the housing (1) via this insulating material.

Furthermore, it goes without saying that the number of power amplifying semiconductors (3) is not limited to one, and the same effect can be obtained even if there are a plurality of semiconductors.

〔Effect of the invention〕

According to the present invention, the cooling effect of a portable radio device can be enhanced, and a radio device with excellent operability can be obtained.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram showing an embodiment of a portable radio device according to the present invention, Fig. 2 is an enlarged view of the main part of Fig. 1, and Fig. 3 is equivalent to Fig. 1 showing a conventional device. It is a diagram. In the figure, (1) is a cylinder, (3) is a power amplifying semiconductor (amplifying element), (5) is an antenna, (6) is a bearing, and (8) is an insulating material.

Claims (2)

[Claims] (1) A portable radio device equipped with an antenna for transmitting and receiving radio waves, a bearing for attaching the antenna to a housing so as to be retractable from the housing, and an amplification element for amplifying the signal transmitted from the antenna. A portable radio device characterized in that a width increasing element is attached to the bearing via an insulating material, and the antenna is configured as a heat pipe. (2) The portable radio device according to claim 1, wherein the amplifying element is attached to the outer circumference of the bearing.