Projector

An image projection and image technology, which is applied in the direction of using a projection device, an image reproducer, a projection device, and image communication, etc., can solve the problems of increasing the noise of the exhaust fan 86 and the like.

Inactive Publication Date: 2015-01-14
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method has a problem that the noise of the exhaust fan 86 increases

Method used

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Experimental program
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Effect test

Embodiment approach

[0117] One embodiment of the present invention has been described above, and various embodiments of the present invention described below have their own unique effects.

Embodiment approach 1

[0119] Image projecting device such as projector 1 etc., has light source 61; Image forming part 101, uses the light that light source 61 emits to irradiate image generating elements such as DMD12, generates optical image; Generated optical image; power supply unit 80, to supply power to light source 61; frame body (in this embodiment, constitute as exterior cover 59 and base member 53 etc.), be used for accommodating light source 61, image forming unit 101, projection optics unit 102 , and the power supply unit 80, the outside air is sucked in from the first air inlet 84 provided on the frame body, and the outside air flows around the projection optical unit 102 to the power supply unit 80 to cool the power supply unit 80, and the cooled air flows from the The exhaust port 85 on the frame is exhausted, wherein, the second air inlet 131 is set, and the second air inlet 131 is closer to the power supply part 80 than the first air inlet 84, and the air is sucked from the second a...

Embodiment approach 2

[0122] In Embodiment 1, the total opening cross-sectional area of ​​the second air inlet 131 is 300 mm. 2 above.

[0123] According to this, in Embodiment 2, the outside air can be sucked in efficiently through the second air inlet 131 .

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Abstract

In a projector (1) that includes a light source (61), an image forming unit (101), a projection optical unit (102), and a case (59) to contain the light source (61), the image forming unit (101), the projection optical unit (102), and the power supply (80), takes outside air in through a first intake duct (84) provided on the case (59), cools the power supply (80) by circulating the taken outside air to the power supply (80) circumventing the projection optical unit (102), and exhausts the air after cooling through an exhaust vent (85) provided on the case (59). A second intake duct (131) is provided nearby the power supply (80) compared to the first intake duct (84), and the amount of outside air drawn into the case (59) through the second intake duct (131) is larger than the amount of outside air drawn into the case (59) through the first intake duct (84).

Description

technical field [0001] The present invention relates to image projection devices. Background technique [0002] A conventional image projection device includes an image forming unit composed of an image generating element that modulates light based on image data input from a computer or the like, and an illuminating unit that irradiates the image generating element with light emitted from a light source. The image formed by the image forming unit is formed into an image on the projection surface by the transmission optical unit. [0003] There are various heat-radiating components in the image projection device, such as an image generating element, a light source, a power supply device, and the like. Patent Document 1 (JP Laid-Open No. 2013-97340) discloses an image projection device in which air flows between an image generating element, a light source, a power supply device, and the like for cooling. [0004] Figure 22 It is a perspective view showing the internal struc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/16H04N9/31
CPCH04N9/3144G03B21/16G03B21/145G03B21/28G02B7/1815G02B17/0848
Inventor 山田正道藤冈哲弥石川直行三川晃尚金井秀雄御沓泰成土屋聪
Owner RICOH KK
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