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Shading fan

A fan and light source technology, applied to parts of pumping devices for elastic fluids, non-variable pumps, pump devices, etc., can solve problems affecting safety, desktop heating, and affecting projector projection brightness, etc.

Active Publication Date: 2006-01-25
DELTA ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the fan 10 is used in a projector as a heat sink for the projector's light source (that is, a light bulb), part of the light emitted by the light source will leak through the gap between the fan blade 14 and the frame body 11, resulting in light leakage phenomenon, such as Figure 1B shown in
In this way, it will not only affect the projection brightness of the projector, but also, if the leaked light is directly irradiated on the desktop, the desktop will be heated, which will damage the material of the desktop in the slightest, and affect the safety in the worst case.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0018] Please refer to Figure 2A and Figure 2B , which shows a schematic cross-sectional view of the fan according to the first embodiment of the present invention. The fan 20 is mainly composed of a fan frame (fan frame) 21 , an impeller (impeller) 25 and a motor (not shown in the figure). The motor is arranged in the motor base 22 to drive the impeller 25 to rotate. The fan frame 21 is a frame with an opening 26 , and the periphery 27 of the opening 26 has a curved surface. The motor base 22 is disposed in the frame body 21 and supports the motor base 22 through a plurality of ribs 23 . The impeller 25 includes a plurality of fan blades 24 arranged radially.

[0019] When the fan 20 is applied to a heat-generating light source (for example, a projector including a light bulb) as a heat sink for the light bulb, when the light emitted by the light source enters the opening 26, the curved surface of the periphery 27 of the opening is The light is blocked from exiting the...

no. 2 example

[0025] Please refer to Figure 3A and Figure 3B , which shows a schematic cross-sectional view of the whole fan according to the second embodiment of the present invention. The fan 30 is mainly composed of a fan frame 31 , an impeller (impeller) 35 and a motor (not shown in the figure). The motor is disposed in the motor base 32 to drive the impeller 35 to rotate. The fan frame 31 is a frame with an opening 36 , and the periphery 37 of the opening 36 has at least one slope. The motor base 32 is disposed in the frame body 31 and supports the motor base 32 through a plurality of ribs 33 . The impeller 35 includes a plurality of fan blades 34 arranged radially.

[0026] When the fan 30 is applied to a heat-generating light source (such as a projector that includes a light bulb) as a heat sink for the light bulb, when the light emitted by the light source enters the opening 36, the slope of the periphery 37 of the opening is The light is blocked from exiting the opening 36 ....

no. 3 example

[0032] Please refer to Figure 4A ~ Figure 4F , which shows a schematic cross-sectional view of the fan according to the third embodiment of the present invention. The fan 40 is mainly composed of a fan frame 41 , an impeller (impeller) 45 and a motor (not shown in the figure). The motor is disposed in the motor base 42 to drive the impeller 45 to rotate. The fan frame 41 is a frame body with an opening 46 , and a peripheral edge 47 of the opening 46 has at least one slope. The motor base 42 is disposed in the frame body 41 and supports the motor base 42 through a plurality of ribs 43 . The impeller 45 includes a plurality of fan blades 44 arranged radially.

[0033] When the fan 40 is applied to a heat-generating light source (for example, a projector that includes a light bulb) as a heat sink for the light bulb, when the light emitted by the light source enters the opening 46, the slope of the periphery 47 of the opening is Light is blocked from exiting the opening 46 . ...

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PUM

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Abstract

The invention is a masking fan applied to heating light source, and comprising a fan frame and a blade wheel, where the fan frame is a frame body with an open hole, the edge of the open hole has a curve or at least a slope, and the blade wheel is held in the frame body. As the light emitted from the light source enters to the open hole, the curve or slope of the edge of the open hole can block the light from passing through the open hole. The two ends of the open hole forms an air inlet and an air outlet on the frame body, and after the light emitted from the light source enters to the air inlet, the curve or slope blocks the light from passing through the air outlet. The fan of the invention makes the gap between the fan blades the fan frame completely covered by the fan blades, thus able to avoid light leakage.

Description

technical field [0001] The invention relates to a fan, in particular to a fan capable of shading light. Background technique [0002] With the continuous improvement of the performance of electronic devices, cooling devices or cooling systems have become one of the indispensable equipment in current electronic devices, because if the heat energy generated by electronic devices is not dissipated properly, the performance will deteriorate at least, and the serious It may cause burning of the electronic device. Heat dissipation devices are even more important for microelectronic components (such as integrated circuits, integrated circuits), because with the increase in integration and the advancement of packaging technology, the area of ​​integrated circuits is continuously shrinking, and the heat energy accumulated per unit area It will also be relatively higher, so heat dissipation devices with high heat dissipation efficiency have always been actively researched and develop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/40F04D25/08F04D29/54
CPCF04D25/08F04D29/545
Inventor 吕昭文王可男黄文喜
Owner DELTA ELECTRONICS INC