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Cooling apparatus and a projector having the same

A technology for cooling equipment and projectors, which is applied in the field of projectors and can solve problems such as reducing image quality.

Inactive Publication Date: 2006-09-13
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When multiple LEDs do not have equal temperatures, white balance occurs due to variations in light quality and brightness between LEDs, reducing image quality

Method used

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  • Cooling apparatus and a projector having the same
  • Cooling apparatus and a projector having the same
  • Cooling apparatus and a projector having the same

Examples

Experimental program
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Embodiment Construction

[0024] Hereinafter, specific exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0025] The defined matters provided in the description, such as its detailed structure and elements, are provided to assist in a comprehensive understanding of the present invention. Therefore, it should be understood that the present invention can be practiced without these defined matters. Also, descriptions of well-known functions and constructions will be omitted in order to provide a clear and concise description.

[0026] refer to Figure 1 to Figure 3 , a cooling device for a projector having a first light emitting diode (LED) module 10 and a second LED module 20 includes a cooling member 30 , a heat pipe 40 , a cooling fin member 50 and a fan 60 .

[0027] The cooling member 30 has a first cooling member 310 for installing the first LED module 10 and a second cooling member 320 for installing the second LED module 20 ....

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Abstract

A projector includes a first LED module having a first LED projecting a ray of one of three primary colors of light and a first substrate mounting the first LED. A second LED module includes second and third LEDs projecting the other two colors of the three primary colors and a second substrate mounting the second and third LEDs. An optical illuminating system uniformly focuses and projects red, green and blue rays emitted from the first to third LEDs. A display unit forms an image by modulating the light projected from the optical illuminating system according to image information. An optical projecting system enlargingly projects the image formed by the display unit onto a screen. A cooling apparatus cools and therefore keeps the first to third LEDs at approximately the same temperature.

Description

technical field [0001] The present invention relates to a projector. More particularly, the present invention relates to a projector using a light emitting diode (LED) as a light source, and a cooling device for the projector. Background technique [0002] Unlike a general projector, in a projector using a light emitting diode (LED) as a light source, some component parts such as a color wheel filter can be omitted. Therefore, a projector using LEDs can be manufactured in a more portable size. Also, since a projector using LEDs can obtain high-quality light of three primary colors, the projector can be made lighter, simpler in structure, and cheaper. [0003] However, it is difficult for such a projector using LEDs to provide enough internal space for heat dissipation. Such LEDs whose light quality and brightness deteriorate beyond a certain temperature need to be kept below a certain temperature. When the temperatures of the LEDs that respective...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/16G03B21/00
CPCG03B21/16F16L21/065
Inventor 金元年
Owner SAMSUNG ELECTRONICS CO LTD