Illumination – Light source and modifier – With ventilating – cooling or heat insulating means
Reexamination Certificate
2002-10-16
2004-05-25
Ward, John Anthony (Department: 2875)
Illumination
Light source and modifier
With ventilating, cooling or heat insulating means
C362S096000, C362S345000, C362S373000
Reexamination Certificate
active
06739736
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a radiating system for projector device, especially to a radiating system for projector device with enhanced heat dissipation effect and reduced size.
BACKGROUND OF THE INVENTION
Projector devices have rapid progress as the advance of optical and projection technologies. More particularly, the sizes and cost of the projector devices are reduced such that the projector devices are extensively used for presentation, meeting, educational training or even home entertainment. The development trends of the projector devices are high image quality, high brightness, compact size, and low price.
However, to achieve high brightness, the projector devices should adopt light source with higher power. Therefore, the projector devices requires larger radiating fan with serious noise and bulk radiating system.
FIG. 1
shows a conventional radiating system comprising a ventiduct structure
10
a
with a ventiduct space
20
a
. A lamp
40
a
is placed in the ventiduct space
20
a
. The radiating system further comprises a lamp radiating fan
60
a
and a radiating fan
70
a
arranged on two sides of the lamp
40
a
, respectively. The lamp radiating fan
60
a
is used to inhale an air for blowing a lamp center
30
a
of the lamp
40
a
, and the radiating fan
70
a
is functioned to draw a relatively cool air into the ventiduct space
20
a
and drain a relatively hot air out of the ventiduct space
20
a.
FIG. 2
shows another conventional radiating system comprising a ventiduct structure
10
a
with a ventiduct space
20
a
. The radiating system further comprises a lamp radiating fan
60
a
and a radiating fan
70
a
arranged on two sides of the lamp
40
a
, respectively. Similarly, the lamp radiating fan
60
a
is used to inhale an air for blowing a lamp center
30
a
of the lamp
40
a
, and the radiating fan
70
a
is functioned to draw a relatively cool air into the ventiduct space
20
a
and drain a relatively hot air out of the ventiduct space
20
a.
However, in above-mentioned two conventional radiating systems, the lamp radiating fan
60
a
is arranged at such location that the air inhaled by the lamp radiating fan
60
a
will not directly blow at the lamp center
30
a
of the lamp
40
a
, thus degrading the heat dissipation effect of the conventional radiating systems. Moreover, the lamp radiating fan
60
a
and the radiating fan
70
a
are arranged on two sides of the lamp
40
a
, the volume of the conventional radiating systems is inevitably bulky.
SUMMARY OF THE INVENTION
It is the object of the present invention to provide a radiating system for projector device with enhanced heat dissipation effect and reduced size.
In one aspect of the present invention, a baffle is provided to divided a ventiduct structure into a first ventiduct structure and a second ventiduct structure, and to divide a ventiduct space into a first ventiduct space and a second ventiduct space, thus enhancing the heat dissipation effect.
In another aspect of the present invention, a lamp radiating fan and a radiating fan are arranged at the same side of the lamp.
To achieve above object, the present invention provides a radiating system for projector device comprising a ventiduct structure with a ventiduct space; a light source having a lamp center and arranged in the ventiduct space; a baffle provided around the light source to divide the ventiduct structure into a first ventiduct structure and a second ventiduct structure, and to divide the ventiduct space into a first ventiduct space and a second ventiduct space, wherein the first ventiduct structure has a first air inlet and a first air outlet at two ends thereof, respectively, and the second ventiduct structure has a second air inlet and a second air outlet at two ends thereof, respectively, and the first air outlet is communicated with the second ventiduct space; a lamp radiating fan provided at an inner side of the of the first air inlet of the first ventiduct structure; and a radiating fan provided at an inner side of the of the second air outlet of the second ventiduct structure.
The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing, in which:
REFERENCES:
patent: 4935853 (1990-06-01), Collins
patent: 5924791 (1999-07-01), Arai et al.
patent: 5961203 (1999-10-01), Schuda
patent: 6286980 (2001-09-01), Meyer
patent: 6575599 (2003-06-01), Imamura et al.
Browdy and Neimark , P.L.L.C.
Lite-On Technology Corp.
Ward John Anthony
LandOfFree
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