Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Reexamination Certificate
2002-10-09
2003-09-02
Chervinsky, Boris (Department: 2835)
Electricity: electrical systems and devices
Housing or mounting assemblies with diverse electrical...
For electronic systems and devices
C361S689000, C361S692000, C174S016100, C454S184000, C220S366100
Reexamination Certificate
active
06614656
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a display device and, more particularly, to a display device with hidden air vents.
BACKGROUND OF THE INVENTION
With rapid and developments of thin film transistor manufacturing technology, and the advantages of slim and light, and power saving and radiation-free, liquid crystal display (LCD) devices have been widely used in various electronic products, such as Personal Digital Assistants (PDAs), notebook computers, digital cameras, video cameras, mobile phones, and the like. In addition, continuous R & D funding has been invested in this field, and large scale production facilities have been adopted, quality of LCD devices improves continuously and prices are falling down constantly. All the above factors further expand its applications. Nowadays consumers demand bigger screens, smaller size, lighter weight, and longer operation time. However, the bigger screen consumes more power, and longer operating results in greater heat accumulation. Meanwhile the slim and light requirements on the physical condition tend to cause the electronic elements packed inside the device malfunction at the high temperature. Therefore, air vents are usually provided on the surface of the display devices to channel heated air to the ambience through convection to achieve heat dissipation effect.
Referring to
FIG. 1
, FIG
1
is for a conventional LCD device. The LCD device
10
includes a front panel
11
and a back panel
12
. The front panel
11
has a liquid display area
13
for displaying image information. The back panel
12
has a plurality of air vents
14
. In the interior of the LCD device
10
, there are various types of electronic elements and IC circuits (not shown in the drawing). The front panel
11
has a first edge
15
to couple with a second edge
16
of the back panel
12
to form the product.
Referring to
FIG. 2
, the second edge
16
of the back panel
12
has a flange
17
to couple tightly with the bottom of the first edge
15
of the front panel
11
. An ornamental groove
18
is formed between the first edge
15
and the second edge
16
. As the front panel
11
and the back panel
12
are coupled tightly, heat generated inside the LCD device
10
is difficult to disperse. In order to overcome this problem, conventional LCD devices often have air vents
14
formed on the surface of the LCD device
10
to facilitate air convection to discharge heat. But the air vents
14
spoil the appearance of the LCD device
10
whether they are formed on the front panel
11
or the back panel
12
. Moreover, as heat dissipation effect depends on the total area of the air vents
14
, a great number of air vents
14
have to be made to increase the heat dissipation effect. This results in increased molding and manufacture costs. It also traps more external dusts and dirt into the LCD device
10
and impacts the useful life of the product.
Hence, to make the display with heat dissipation effect is one of the hot pursued issues among the LCD device producers.
SUMMARY OF THE INVENTION
The primary object of the invention is to provide a display device with hidden air vents. The heat dissipating air vents are located and hidden inside the ornamental groove to make the display device more appealing.
Another object of the invention is to provide a display device with hidden air vents to improve the heat dissipating efficiency.
Yet another object of the invention is to provide a display device with hidden air vents to simplify manufacturing processes and reduce fabrication costs.
A further object of the invention is to provide a display device with hidden air vents to prevent external dusts from directly entering into the device to increase useful life of the product.
According to this invention, the display device with hidden air vents includes a main body and a casing. The main body includes a heat generating source which consists of electronic elements contained in the main body. The casing is coupled with the main body and includes a first wall and a second wall. The first wall and the second wall correspond to each other and are coupled tightly. The first wall has a plurality of support ribs located on the surface thereof matching a flange formed on a second edge of the second wall. The flange is in contact with the support ribs. The second edge of the second wall and the surface of the first wall form a gap of a selected width therebetween.
In one embodiment of the invention, the gap has a first opening and a second opening. The first opening forms an ornamental groove while the second opening forms a hidden air vent.
In one embodiment, the main body is a LCD device located on the display area which may be on the first wall or the second wall for displaying image information.
REFERENCES:
patent: 4659349 (1987-04-01), Rodi et al.
patent: 5204497 (1993-04-01), Herrick
patent: 6027535 (2000-02-01), Eberle et al.
patent: 6246573 (2001-06-01), Khan et al.
Chervinsky Boris
HannStar Display Corp.
Troxell Law Office PLLC
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