KR20080016314A - Dmb receiver having antenna device - Google Patents

Abstract

A DMB(Digital Multimedia Broadcasting) receiver having an antenna device is provided to supply an antenna length sufficient for receiving an electric wave regardless of a size of a main body of the receiver. A DMB receiver comprises a main body(10), a first antennal assembly(21), a second antenna assembly(22), and a fixing device(23). The main body includes an embedded part related to DMB receipt inside and a connection device(11) to be connected to a terminal not to support the DMB receipt on a side. The first antennal assembly is fixed in the main body in a length-controllable structure as a plurality of unit members(21a-21d) with different diameters are stacked sequentially. The second antennal assembly is inserted into the main body in the same shape and structure as the first antenna assembly. The fixing device connects and fixes the first and second antenna assemblies.

Description

DMB receiver having antenna device

1 is an exploded perspective view showing the configuration of a DMB receiver according to an embodiment of the present invention.

2 is a perspective view illustrating a state in which an antenna device according to an embodiment of the present invention is inserted into a receiver.

3 is a perspective view illustrating a state in which the first antenna assembly constituting the antenna device according to an exemplary embodiment of the present disclosure is drawn out.

4 is a perspective view illustrating a state in which both the first antenna assembly and the second antenna assembly constituting the antenna device according to an exemplary embodiment of the present disclosure are drawn out.

* Description of symbols on main parts of the drawings *

10-Receiver body 11-Connections

12-First storage 13-Second storage

20-antenna assembly 21-first antenna assembly

22-2nd antenna assembly 21a ~ 21d, 22a ~ 22d-unit member

23-Fastening 23a-First Government

23b-Second Government

The present invention relates to a DMB receiver having an antenna device.

DMB (Digital Multimedia Broadcasting), or digital multimedia broadcasting, named by the Ministry of Information and Communication of Korea, is digitalizing voice broadcasting. It is not only AM and FM radio type, but also high quality CD level of sound quality, text, graphics, and moving pictures. It is a next-generation broadcast that provides a variety of data services, bi-directional, excellent vehicle quality, etc. capable of transmitting data of s.

Accordingly, DMB receivers for receiving DMB broadcasts are also commercialized and are being applied to portable devices such as PDAs. Currently, DMB receivers are provided in terminals that are not built-in devices that can communicate with terminals capable of DMB service. It is manufactured as a portable device for general use in various multimedia devices by configuring a detachable method using a USB connector.

On the other hand, the DMB receiver is equipped with an antenna for receiving the DMB frequency, and the antenna can obtain a constant reception rate only by maintaining a certain length (at least 150 mm or more) due to the characteristics of the antenna of the DMB receiver, but the receiver is gradually made light and simple. Accordingly, there is a problem that the reception rate is reduced because the length of the antenna is also shortened.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide an antenna device of the DMB receiver that can occupy a small space at the time of storage but can exhibit the required performance in use. have.

The present invention is a receiver main body is provided with a built-in parts related to DMB reception, one side of the receiver main body is provided with a predetermined connection means to be connected to the terminal does not support DMB reception; A first antenna assembly fixedly installed in the receiver body in a length-adjustable structure in which a plurality of unit members having different diameters are sequentially stacked and coupled; A second antenna assembly inserted into the receiver body in the same shape and structure as the first antenna assembly; And a predetermined fixing means for connecting and fixing the first antenna assembly and the second antenna assembly.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings such that those skilled in the art may easily implement the present invention.

1 is an exploded perspective view showing the configuration of a DMB receiver according to an embodiment of the present invention, Figure 2 is a perspective view showing a state in which the antenna device is inserted into the receiver according to an embodiment of the present invention, Figure 3 is a view of the present invention 4 is a perspective view illustrating a state in which a first antenna assembly constituting an antenna device according to an embodiment of the present invention is drawn out, and FIG. 4 illustrates a first antenna assembly and a second antenna assembly constituting an antenna device according to an embodiment of the present invention; It is a perspective view which shows the state which both were drawn out.

As shown in FIGS. 1 to 4, an antenna device according to an embodiment of the present invention includes a receiver body 10 and an antenna assembly 20 mounted in a structure capable of adjusting a length of the receiver body 10. It is composed.

The receiver main body 10 has internal parts related to DMB reception such as a DMB receiving module, and on one side, electrical connection is possible with various terminals (computers, mobile communication terminals, laptops, TVs, etc.) that do not support DMB reception. The predetermined connection means 11 is provided so that it may become.

At this time, the connection means 11 is preferably configured to have a USB type interface structure provided as an external connection device to the various terminals.

In addition, the upper part of the receiver body 10 is provided with a first receiving hole 12 and a second receiving hole 13 in the longitudinal direction, respectively, for the installation of the antenna assembly 20.

The antenna assembly 20 includes a first antenna assembly 21 fixed to the first receiving hole 12 and a first antenna assembly 21 connected to the first antenna assembly 21 and inserted into the second receiving hole 13. It is divided into two antenna assembly (22).

The first antenna assembly 21 is a structure in which a plurality of unit members 21a, 21b, 21c, and 21d having different diameters in a rod shape are sequentially stacked and assembled, and in use, a plurality of relatively small diameters are used. The unit members 21b, 21c and 21d are drawn out to the outside, and when not in use, the unit members 21b, 21c and 21d are inserted into the unit member 21a having the largest diameter. It is a rod antenna to be stored.

At this time, the unit member 21a having the largest diameter among the plurality of unit members 21a, 21b, 21c, and 21d has a structure in which an end thereof is electrically connected to the receiver main body 10. 12) is fixedly installed.

The first antenna assembly 21 is made of a metal material so as to perform an antenna function when connected to a wireless terminal such as a DMB receiver. However, the first antenna assembly 21 is preferably copper alloy or nickel plated with excellent conductivity.

Meanwhile, a second antenna assembly 22 is installed around the first antenna assembly 21. The second antenna assembly 22 is also a rod antenna composed of a plurality of unit members 22a, 22b, 22c and 22d having the same structure and shape as the first antenna assembly 21. It is disposed around the antenna assembly 21 and inserted into the second receiving hole 13 of the receiver body 10, and is fixed to the first antenna assembly 21 by a predetermined fixing means 23.

The fixing means 23 is configured to grip a part of the upper end of the unit member 21d having the smallest diameter among the unit members 21a, 21b, 21c and 21d constituting the first antenna assembly 21. The largest diameter of the first fixing part 23a to be fixed and the unit members 22a, 22b, 22c and 22d extending from the first fixing part 23a and constituting the second antenna assembly 22 is determined. The first fixing part 23a and the second fixing part 23b are formed in a ring shape having a second fixing part 23b fixed to hold a part of the upper end of the unit member 22a. By fixing the unit member 21d of the 21 and the unit member 22a of the second antenna assembly by welding or the like, the second antenna assembly 22 can serve as an antenna.

Therefore, the unit member 21d having the smallest diameter of the first antenna assembly 21 is fixedly installed on the first fixing part 23a of the fixing means 23, and the second antenna is installed on the second fixing part 23b. Since the unit member 22a having the largest diameter of the assembly 22 is fixedly installed, only the first antenna assembly 21 is drawn out and used as shown in FIG. 3 according to the reception rate, or the second as shown in FIG. 4. The antenna assembly 22 can be pulled out together and used to secure an appropriate reception rate regardless of the size of the receiver main body 10.

As mentioned above, although this invention was demonstrated in detail using the preferable Example, the scope of the present invention is not limited to a specific Example and should be interpreted by the attached Claim. In addition, those skilled in the art should understand that many modifications and variations are possible without departing from the scope of the present invention.

As described above, according to the DMB receiver having an antenna device according to an embodiment of the present invention, a first antenna assembly and a second antenna assembly including a plurality of unit members are installed in the receiver body and according to a reception ratio, Since only the antenna assembly may be drawn out or the second antenna assembly may be drawn out together, the antenna assembly may be provided with sufficient length of the antenna for radio wave reception regardless of the size of the receiver body.

Claims (3)

A receiver main body in which a part related to DMB reception is built-in is installed, and on one side, a receiver main body is provided with a predetermined connection unit to allow connection with a terminal which does not support DMB reception; A first antenna assembly fixedly installed in the receiver body in a length-adjustable structure in which a plurality of unit members having different diameters are sequentially stacked and coupled; A second antenna assembly inserted into the receiver body in the same shape and structure as the first antenna assembly; DMB receiver comprising a predetermined fixing means for connecting and fixing the first antenna assembly and the second antenna assembly. The method of claim 1, The receiver body has a first storage hole and a second storage hole is formed on the upper surface to accommodate the unit members constituting the first and second antenna assemblies, The unit member having the largest diameter among the unit members constituting the first antenna assembly is fixedly installed in the first receiving hole to be electrically connected to the receiver body. The unit member having the largest diameter among the unit members constituting the second antenna assembly constitutes the first antenna assembly so that the first antenna assembly can be pulled in and out of the receiver body according to the length adjustment of the first antenna assembly. DMB receiver having an antenna device that is fixed to the unit member having the smallest diameter of the unit member and the fixing means. The method of claim 2, The fixing means, A first fixing part fixed to an upper end of the unit member having the smallest diameter among the unit members constituting the first antenna assembly; A DMB receiver having an antenna device having a ring shape comprising a second fixing part fixed to an upper end of a unit member having the largest diameter among the unit members constituting the second antenna assembly.

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