Display circuit board of a heat dissipation system

Details Display circuit board of a heat dissipation system Display circuit board of a heat dissipation system

2002-08-06

2004-04-06

Thompson, Greg D. (Department: 2835)

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

C417S360000, C417S423140, C454S184000

Reexamination Certificate

active

06717809

ABSTRACT:

FIELD OF THE INVENTION
The invention relates to a display circuit board of a heat dissipation system, and more particularly, to a display circuit board that has a plurality of light emitting diodes soldered thereon.
BACKGROUND OF THE INVENTION
With constantly enhanced functions of electronic devices, the heat dissipation apparatus or system has become an indispensable accessory for these electronic devices. If the thermal energy generated by the electronic devices is not properly dissipated, they will suffer functional degradation, or even become damaged in serious situations. For instance, a computer generally has a heat dissipation system consisting of a plurality of fans for dissipating the thermal energy generated by the central processing unit or the power supply. The heat dissipation system must be connected to the control ports of the computer. The computer has a built-in detection circuit to detect the operating conditions of the fans. In the event that one of the fans malfunctions, the other fans in the heat dissipation system must be able to make up the lost heat dissipation power of the malfunctioned fan. Otherwise, the consequences could be serious. Hence the electronic devices that generate a great amount of heat (such as the central processing unit) usually have a heat dissipation apparatus or system located on the surface or side to dissipate the generated thermal energy.
Please refer to FIG.
1
.
FIG. 1
is a diagram of a heat dissipation system
10
according to the prior art. As shown in
FIG. 1
, the heat dissipation system
10
comprises a fan tray
12
, a control circuit board
16
disposed on the fan tray
12
, a plurality of fans
14
disposed on a bottom board
18
of the fan tray
12
, and a plurality of light emitting diodes
20
disposed on a side wall of the fan tray
12
. The fan tray
12
is a box-shaped metal frame having an opening
17
, a bottom board
18
and four side walls. The fans
14
are vertically mounted onto the fan tray
12
through the opening
17
and are fastened to the bottom board
18
of the fan tray
12
by means of a plurality of fasteners (such as screws, etc.). Each fan
14
is electrically connected to the control circuit board
16
through a plurality of conductive cables
21
(such as power supply cables, signal cables, etc.). The light emitting diodes
20
are provided to display the operating conditions of the corresponding fans
14
. Each light emitting diode
20
has a positive and a negative terminal connecting to the control circuit board
16
through a signal cable
23
to display the signal of the operating conditions of the corresponding fan
14
transmitted from the control circuit board
16
.
When a user wishes to install the heat dissipation system
10
on a targeted heat dissipation object, the tangled conductive cables
21
and signal cables
23
reduce the usable space and increase the difficulty of installation. In the event that the targeted heat dissipation object requires greater heat dissipation, the heat dissipation system
10
needs more fans
14
. That is, more light emitting diodes
20
, conductive cables
21
and signals cable
23
are required. The problems mentioned above will become even more severe.
SUMMARY OF THE INVENTION
The object of the present invention is therefore to provide a display circuit board of a heat dissipation system that has a simple design, occupies less space and does not require complicated wiring to display the operating conditions of the heat dissipation system.
The foregoing, as well as additional objects, features and advantages of the invention will be more readily apparent from the following detailed description, which proceeds with reference to the accompanying drawings.


REFERENCES:
patent: 4774631 (1988-09-01), Okuyama et al.
patent: 5788467 (1998-08-01), Zenitani et al.
patent: 5997266 (1999-12-01), Lecinski et al.
patent: 6388880 (2002-05-01), El-Ghobashy et al.
patent: 6457949 (2002-10-01), Bendikas et al.
patent: 6592449 (2003-07-01), Cipolla et al.
patent: 6625020 (2003-09-01), Hanson et al.

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