KR20040107125A - Sound absorbing device for fan noise of PDP TV - Google Patents

Abstract

PURPOSE: An apparatus for absorbing noise generated from a fan of a PDP(Plasma Display Panel) TV is provided to prevent radiation noise caused by a cooling fan from being transmitted to viewers by absorbing the noise using absorbing paper. CONSTITUTION: An apparatus for absorbing noise generated from a fan of a PDP TV includes a case, a cooling fan, and an absorbing device. The cooling fan radiates heat generated in the case to the outside. The absorbing device includes an absorbing member(61) located on a path of radiating noise radiated from the cooling fan and a part(62,63) for setting the absorbing member in the case. The absorbing device prevents noise generated when the cooling fan is operated from being reflected from a wall.

Description

Sound absorbing device for fan noise of PDP TV

The present invention relates to a Plasma Display Panel TV (abbreviated as PDP TV), and more specifically, to prevent noise generated from a cooling fan provided inside a PDP TV case before being reflected by a wall. It's about the structure that makes it possible.

In general, PDP TVs fill a mixed gas of neon, argon, xenon, etc. between two glass substrates and apply a fixed pressure to the space so that the gas is ionized and discharge occurs as the ultraviolet rays hit the phosphor to display a color image. Appliance.

In addition, the PDP TV is mostly made thin, and is a device capable of being thinner and lighter than a conventional CRT.

As shown in FIG. 1, the PDP TV is configured to cool the heat generated by the operation of the high-voltage driving circuit inside the case 12 forming the exterior of the PDP TV 7. The cooling fan 9 is provided at the upper end of the rear side.

In general, when the fan is driven, it may generate noise that interferes with planting, such as regular low-frequency factory noise, which may increase the stress of the viewer. Radiation noise of the fan is an aerodynamic noise generated by friction and excitation of the wing surface with ambient air when the fan is driven, and is composed of a low frequency blade passing frequency and its harmonics.

Therefore, even if the optimally designed cooling fan 9 is mounted and the PDP TV 7 is operated, viewing of the viewer 11 may be disturbed due to the influence of radiation noise when the cooling fan 9 is driven.

Of course, in recent years, a lot of efforts have been made to reduce noise as noise becomes a serious social problem.

For example, in order to ensure reliability of components inside the case 12, 50 inches or more of the PDP TV 7 currently being produced uses the low noise cooling fan 9 to generate heat generated inside the case 12. 11) is to be discharged to the outside in the opposite direction.

However, despite using the low noise cooling fan 9 and installing the position of the viewer 11 and the direction of the low noise cooling fan 9 in the opposite direction so that heat and noise can be discharged, the cooling fan Noise generated by the driving of (9) is provided as a factor that hinders viewing.

Particularly, in the case of the wall-mounted PDP TV 7, the distance between the PDP TV 7 and the wall is extremely close, and the noise generated from the cooling fan 9 is mostly reflected by the wall 8 so that the viewer ( 11) the obstruction was bound to be greater.

In addition, the problem presented in the case of a quiet night is aggravated.

In addition, the radiation noise is a noisy sound that interferes with viewing, there is a problem that a sensitive set to a sensitive customer may require a bad report and sometimes return.

The present invention has been made to solve the above-mentioned conventional problem, and the sound absorption to prevent the radiation noise caused by the cooling fan generated in driving the cooling fan inside the PTP TV case to reach the viewer by reflecting to the wall The purpose is to provide a device.

1 is a state diagram schematically showing a conventional mounting state

Figure 2 is a perspective view showing a fan noise absorbing device of the PDP TV according to the present invention

Figure 3 is a perspective view showing a state in which the fan noise absorbing device of the PDP TV according to the present invention is attached to the case

Figure 4 is a state diagram showing the action of the fan sound absorbing device according to the present invention.

Explanation of symbols on the main parts of the drawings

61: sound absorbing paper 62: first mounting plate

63: leg 64: second attachment plate

65: double sided tape

7: PDP TV 8: Wall

9: cooling fan 10: wall mount

11: viewer 12: case

In order to achieve the above object, the present invention is provided on a case forming the appearance of the PDP TV, a cooling fan for radiating heat generated in the case to the outside, and on the radiation path of noise radiated from the cooling fan. The sound absorbing device of the PDP TV, characterized in that it includes a sound absorbing device and a sound absorbing device to prevent the noise generated when the cooling fan is driven to the wall while having a mounting portion for mounting the sound absorbing member to the case; Is provided.

Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings.

First, Figure 2 shows a structure for reducing the radiation noise of the cooling fan 9 according to the present invention. That is, the present invention is characterized in that a sound absorbing device for absorbing noise radiated from the cooling fan 9 is provided in the case 12 forming the appearance of the PDP TV 7.

Here, the sound absorbing device is provided on the radiation path of the noise radiated from the cooling fan 9, and includes a sound absorbing member and a mounting portion for mounting the sound absorbing member to the case 12.

The sound absorbing member may be formed of a glass fiber, a polyurethane coating material, or a material of paper. In the embodiment of the present invention, the sound absorbing member using a paper absorbing paper 61 is presented. The sound absorbing paper 61 is cheaper in terms of cost reduction than using a sound absorbing member of another material, and has a feature of being easy to work as a paper material.

In addition, the mounting portion includes a first attachment plate 62 to which the sound absorbing paper 61 is attached, and a leg portion having a plurality of legs 63 to connect the first attachment plate 62 and the case 12. It is configured. At this time, a second mounting plate 64 is further provided at the end of each leg 63 connected to the case 12 so that the sound absorbing device can be attached to the case 12.

In addition, the leg portion is formed to have an arbitrary length such that the first mounting plate 62 to which the sound absorbing paper 61 is attached is spaced a predetermined distance from the rear surface of the case 12 of the PDP TV 7.

In addition, the leg portion includes at least two or more legs 63, in the present invention, four legs 63 are included in the present invention for the stable support of the sound absorbing device.

In particular, the leg 63 is variable to the length of the wall hangings 10 to fit the width of the space is formed to be balanced.

Of course, the distance determined by the leg 63, the sound absorbing paper 61 is too close to the case 12 can be prevented that the absorption of sufficient noise is not made and the sound absorbing paper 61 is the case ( It is desirable to determine the distance so far that it can be prevented from being too far away from effective sound absorption.

On the other side of the second mounting plate 64, the four legs 63 may be attached to the rear surface on which the cooling fan 9 inside the PDP TV 7 case 12 is mounted. The tape 65 is attached.

On the other hand, Figure 3 is a view showing a state in which the sound absorbing device of the present invention is mounted on the case 12, Figure 4 is a state in which the PDP TV (7) equipped with the sound absorbing device is installed on the wall, In the case of using the sound absorbing device according to the present invention, the radiation noise generated when the cooling fan 9 is driven is absorbed by the sound absorbing paper 61 attached to the sound absorbing device to prevent it from being radiated to the outside.

That is, even if the noise generated by the driving of the cooling fan 9 is radiated through the heat dissipation hole of the case 12 toward the wall 8, the case 12 and the wall 8 are on the radiation path of the noise. Since the sound absorbing paper 61 of the present invention is located in between, the noise does not reach the wall 8 and is absorbed by the sound absorbing paper 61.

Due to the sound absorbing device, the sound absorbing device is placed on the rear surface of the PDP TV 7 casing 12 inside the cooling fan 9 at the position where the viewer 11 desires, and the wall width of the wall 10 is wide. When fitted using the leg 63 to fit the radiation noise generated when the cooling fan 9 is driven is absorbed directly into the sound absorbing paper 61 without reaching the wall (8).

Therefore, the viewer 11 can watch the PDP TV 7 without being disturbed by the wall 8 reflected radiated noise.

In particular, when using the PDP TV 7 equipped with the optimally designed cooling fan 9 and using the sound absorbing device of the present invention at the same time, the viewer 11 may use the PDP TV ( 7) When viewing, the viewing interference due to the radiation noise of the cooling fan 9 will be less.

As described above, the sound absorbing device is mounted on the rear surface of the PDP TV case inside which the cooling fan is mounted so that the radiation noise generated when the fan is driven does not reach the wall and is directly absorbed by the absorbing paper, thereby not being disturbed by the wall reflected radiation noise. It is effective to watch TV.

In addition, the leg for mounting the sound absorbing device is formed to be able to adjust the distance, has the effect that the distance can be freely adjusted according to the width of the wall hanging.

Claims (4)

A case forming an appearance; A cooling fan for radiating heat generated in the case to the outside; And, having a sound absorbing member provided on the radiation path of the noise radiated from the cooling fan and the mounting portion for mounting the sound absorbing member to the case while preventing the noise generated when the cooling fan is driven on the wall Sound absorber: Includes a fan noise absorber of PDTV. The method of claim 1, The sound absorbing member is a fan sound absorbing device of PDTV, characterized in that the sound absorbing paper made of a paper material. The method of claim 1, The mounting unit includes a first attachment plate to which the sound absorbing member is attached, and a leg portion having a plurality of legs that can be varied in length to any length while fixing the first attachment plate to the case. Noise absorber. The method of claim 3. The end of each leg connected to the case is a fan noise absorbing device of PDTV, characterized in that further comprises a second attachment plate is attached to attach each leg to the case back.